CN202251248U - Controller and device for detecting hydraulic valve, device for detecting hydraulic circuit fault and fault processing system - Google Patents
Controller and device for detecting hydraulic valve, device for detecting hydraulic circuit fault and fault processing system Download PDFInfo
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- CN202251248U CN202251248U CN2011203115456U CN201120311545U CN202251248U CN 202251248 U CN202251248 U CN 202251248U CN 2011203115456 U CN2011203115456 U CN 2011203115456U CN 201120311545 U CN201120311545 U CN 201120311545U CN 202251248 U CN202251248 U CN 202251248U
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Abstract
The utility model discloses a controller of hydraulic valve, this controller includes: the processing unit is used for comparing the obtained actual pressure difference value of the hydraulic oil between the oil inlet and the oil outlet of the hydraulic valve and the actual flow value of the hydraulic oil at the oil outlet of the hydraulic valve with a theoretical flow pressure difference relation curve of the hydraulic valve; and an output unit for outputting an electric signal indicating whether the hydraulic valve has a fault or not according to the comparison result of the processing unit. The utility model also discloses a device and fault handling system of device and the detection hydraulic circuit trouble of detecting the hydrovalve. With the technical scheme, if a problem occurs in the hydraulic system, a specific element can be quickly and accurately determined to have a fault, and a processing scheme is provided according to the fault condition.
Description
Technical field
The utility model relates to the hydraulic control field, particularly, relates to controller and the device that is used for detecting the oil hydraulic circuit hydrovalve, device and the oil hydraulic circuit fault processing system that detects the oil hydraulic circuit fault.
Background technique
Since hydraulic system have ouput force or moment big, be easy to realize advantages such as stepless change, Security height, thereby be widely used in the heavy mechanical equipment of every profession and trade, for example, be used to carry with the concrete pump of concreting etc.And the hydraulic system that is applied to heavy mechanical equipment is also comparatively complicated usually, and satisfying the functional requirement of various heavy mechanical equipments, but this has just brought the problem of system reliability.
Because the hydraulic system that is applied to heavy mechanical equipment is comparatively complicated, so the possibility that this hydraulic system breaks down is high relatively, and in case break down or the situation of job insecurity, then can seriously ring the normal operation of machinery.
Existence to this problem; In order to improve the reliability of heavy mechanical equipment (like concrete pump); Chinese patent CN101178061A has proposed a kind of concrete pump intelligent and has detected and control system; Thereby this concrete pump is monitored in real time, whether be in the normal working state with definite concrete pump, thereby obtain higher reliability.This concrete pump intelligent detects and control system installation position displacement sensor on the main oil cylinder piston bar; At hydraulic element position setting pressure sensors such as (like master cylinder, oil pumps); Flowmeter etc. is installed in the oil pump outlet port; Thereby realize real-time monitoring, whether be in the normal working state, thereby reduce fault judgement and repair time to judge concrete pump within a short period of time to the concrete pump working state.
Yet; The defective of this traditional concrete pump Intelligent Measurement and control system is: though utilize this system can in time obtain the information whether concrete pump is in normal working; Yet in case find that the working state of concrete pump has abnormal conditions, where still be difficult to accurately failure judgement point.In other words; Intelligent Measurement that Chinese patent CN101178061A is proposed and control system are to detect and estimate the running state of concrete pump from macroscopic view; And pay close attention to the running state of single hydraulic element from microcosmic; Therefore even if this traditional detection system working state of detecting concrete pump goes wrong, also be difficult to judge out of order reason place, it is problematic promptly can't judging concrete which hydraulic element exactly.
Thereby, when above-mentioned traditional Intelligent Measurement and control system detect system works when undesired, owing to can not judge out of order concrete reason place exactly, therefore when fixing a breakdown, generally adopt one by one elimination process to come to get rid of one by one possible fault point.But this method seriously relies on the work of maintenance personnel experience, if lack experience, then is difficult to find at short notice the place, fault point.And, even if the abundant maintenance man of experience is arranged, there is not pure assurance can find the fault point at short notice exactly yet.In addition, utilize one by one elimination process to carry out operation, waste time and energy, labor intensity is big and efficient is lower.
Therefore, how can confirm exactly that fault element becomes the technical problem that related domain needs to be resolved hurrily.
The model utility content
The purpose of the utility model provides a kind of technological scheme that can confirm fault element exactly.
To achieve these goals; An aspect according to the utility model; The utility model provides a kind of controller that is used for detecting the oil hydraulic circuit hydrovalve; This controller comprises: processing unit, this processing unit are used for the hydraulic oil that is obtained is compared at the actual flow value at the oil outlet place of said hydrovalve and the theoretical delivery pressure reduction relation curve of said hydrovalve in the oiler of said hydrovalve and the actual pressure differential value between the oil outlet and hydraulic oil; And output unit, this output unit is electrically connected with said processing unit, is used for exporting the electrical signal whether said hydrovalve of expression exists fault according to the comparative result of said processing unit.
Preferably; Said controller also comprises receiving element; This receiving element is used to receive expression hydraulic oil at the electrical signal of the oiler force value at the oiler place of said hydrovalve and the expression hydraulic oil electrical signal in the oil outlet force value at the oil outlet place of hydrovalve; Said receiving element is electrically connected with said processing unit; So that above-said current signal is sent to processing unit, said processing unit also is used for said oiler force value is deducted said oil outlet force value and obtains said actual pressure differential value.
Preferably, said actual flow value calculates acquisition according to the flow to the oil hydraulic pump of the oiler fuel feeding of said hydrovalve; Perhaps; Said controller also comprises receiving element; This receiving element is used to receive the electrical signal of expression hydraulic oil in the oiler force value at the oiler place of said hydrovalve; Represent the electrical signal of hydraulic oil in the oil outlet force value at the oil outlet place of hydrovalve, and represent the electrical signal of hydraulic oil at the actual flow value at the oil outlet place of hydrovalve, said receiving element is electrically connected with said processing unit; So that above-said current signal is sent to processing unit, said processing unit also is used for said oiler force value is deducted said oil outlet force value and obtains said actual pressure differential value.
Preferably, said processing unit is used for: obtain the theoretical pressure difference corresponding with this actual flow value according to said actual flow value; Theoretical pressure difference and said actual pressure differential value that will be corresponding with this actual flow value compare.
Preferably; Said processing unit is used for the extent of amendment of the theoretical pressure difference corresponding with said actual flow value and said actual pressure differential value are compared;, the comparative result of said processing unit falls within the said extent of amendment of the theoretical pressure difference corresponding the normal electrical signal of the then said output unit output said hydrovalve of expression if being said actual pressure differential value with said actual flow value; , the comparative result of said processing unit falls into outside the said extent of amendment electrical signal of the said hydrovalve fault of then said output unit output expression if being said actual pressure differential value.
Preferably, said hydrovalve is position control valve, flow control valve or pressure controlled valve.
Preferably; Said hydrovalve comprises drain tap; Wherein, Said processing unit is used for: before the theoretical delivery pressure reduction relation curve with said actual pressure differential value and actual flow value and said hydrovalve compares; Relatively more predetermined drain tap pressure and hydraulic oil are not higher than under the situation of said predetermined drain tap pressure at this drain tap pressure at the drain tap pressure of the drain tap of said hydrovalve, carry out the comparison of the theoretical delivery pressure reduction relation curve of said actual pressure differential value and actual flow value and said hydrovalve.
Another aspect according to the utility model; The device that is used for detecting the oil hydraulic circuit hydrovalve is provided; This device comprises: pressure transducer; This said pressure transducer is connected in series with the oiler and the oil outlet of said hydrovalve respectively, is used to detect hydraulic oil at the oiler pressure at the oiler place of said hydrovalve and the hydraulic oil oil outlet pressure at the oil outlet place of hydrovalve; And controller; This controller is the above-mentioned controller that the utility model provided; Wherein this controller comprises processing unit and output unit, and the hydraulic oil that this processing unit will obtain according to the said oiler pressure and the oil outlet pressure of said sensor compares at the actual flow value at the oil outlet place of said hydrovalve and the theoretical delivery pressure reduction relation curve of said hydrovalve in the oiler of said hydrovalve and the actual pressure differential value between the oil outlet and hydraulic oil; Said output unit is used for exporting the electrical signal whether said hydrovalve of expression exists fault according to the comparative result of said processing unit.
Preferably, said hydrovalve is a plurality of.
Also one side according to the utility model; A kind of device that detects the oil hydraulic circuit fault also is provided; This oil hydraulic circuit comprises dynamical element, executive component and the control unit that connects this dynamical element and executive component; This control unit has a plurality of hydrovalves, and said device comprises the said apparatus that the utility model provides, and there is fault in which hydrovalve in said a plurality of hydrovalve to detect.
According to the utility model on the other hand; A kind of oil hydraulic circuit fault processing system is provided; This system comprises: the device of the above-mentioned detection oil hydraulic circuit fault that the utility model provided and the fault processing unit that is electrically connected with this device; This fault processing unit is used for existing at least one hydrovalve under the situation of fault in the Device Testing result of said detection oil hydraulic circuit fault, exports the fault treatment scheme corresponding with this testing result.
Preferably, said fault processing unit comprises: storage, this storage are used to store the fault treatment scheme to each hydrovalve; Failure processor; This failure processor is electrically connected with the device of said storage and said detection oil hydraulic circuit fault; This failure processor is used for existing under the situation of fault at least one hydrovalve in the Device Testing result of said detection oil hydraulic circuit fault, reads and export the fault treatment scheme corresponding with this testing result of being stored in the said storage.
Preferably; The fault treatment scheme to each hydrovalve of being stored in the said storage comprises interim processing method of fault and troubleshooting methodology; Said fault processing unit also comprises the human-computer interaction device who is electrically connected with said failure processor; This human-computer interaction device has first option and second option, and when said first option was selected, said failure processor read from said storage and exports the interim processing method of said fault to said human-computer interaction device; When said second option was selected, said failure processor read from said storage and exports said troubleshooting methodology to said human-computer interaction device.
Preferably; Said failure processor also is electrically connected with the dynamical element of said oil hydraulic circuit; Device Testing result with in said detection oil hydraulic circuit fault exists at least one hydrovalve under the situation of fault, sends electrical signal out of service to said dynamical element.
The inventor of the utility model finds that what the probability that breaks down in the hydraulic system was higher relatively is control unit, promptly controls the various hydrovalves that hydraulic oil flows.For example when the spool of hydrovalve ran into jam, the action of spool just was easy to inaccurate defective occur, thereby caused this hydrovalve to break down, and then caused whole hydraulic system to be among abnormal working state.In addition, on the quantity of the element of a hydraulic system, as the quantity of the hydrovalve of control unit also often more than dynamical element (like oil pump) and executive component (like oil hydraulic cylinder or oil hydraulic motor).
Therefore; Based on above-mentioned understanding; The inventor of the utility model has proposed the technological scheme that detects to the hydrovalve that breaks down the most easily in the hydraulic system, thereby in case find that hydraulic system goes wrong, can confirm quickly and accurately then specifically there is fault in which hydrovalve element.In addition, preferably can also the fault treatment scheme be provided according to failure condition.
Other feature and advantage of the utility model will partly specify in embodiment subsequently.
Description of drawings
Accompanying drawing is the further understanding that is used to provide the utility model, and constitutes the part of specification, is used to explain the utility model with following embodiment, but does not constitute the restriction to the utility model.In the accompanying drawings:
Fig. 1 is the flow chart of the method that technological scheme adopted that provides of the utility model;
Fig. 2 is the parameter of expression required detection when detecting for the hydrovalve with drain tap;
Fig. 3 is the schematic representation that theoretical pressure difference and actual pressure differential value that expression will be corresponding with the actual flow value compare; With
Fig. 4 is provided with the schematic representation of the oil hydraulic circuit of Check point for expression.
Embodiment
Be elaborated below in conjunction with the embodiment of accompanying drawing to the utility model.Should be understood that embodiment described herein only is used for explanation and explains the utility model, is not limited to the utility model.
At first, the method that technological scheme adopted or the theoretical foundation of illustrated in detail the utility model.
In the oil hydraulic circuit running, the hydraulic oil that comes from the oil hydraulic pump of dynamical element can be flowed through hydrovalve usually and arrived predetermined actuator (for example oil hydraulic cylinder etc.).Oiler and the flow area between the oil outlet of hydrovalve realize and hydrovalve is normally regulated through moving valve core the control of the hydraulic oil of this hydrovalve of flowing through.For example, when spool moves but flow area between oiler and the oil outlet when being zero, between this oiler and the oil outlet for ending; Through moving valve core, can also regulate the size of the flow area between oiler and the oil outlet, thereby realize control the flow of hydraulic oil between oiler and the oil outlet of flowing through; When spool moved to maximum opening, the flow area between oiler and the oil outlet was maximum.
Well known to a person skilled in the art and be; Aperture flow formula according in the principle of Hydro-mechanics can be known; There is direct corresponding relation in the flow Q and the hydraulic oil of liquid of aperture of flowing through between the flow area A of pressure differential deltap p between oiler and the oil outlet and aperture; For example for the thin-walled aperture, Q is directly proportional and is directly proportional with A with the evolution of Δ p.The theoretical foundation of the technological scheme of the utility model is exactly the aperture flow formula of Hydro-mechanics.In other words, for the specific hydrovalve of action correct (promptly not having fault), the flow Q of the hydraulic oil of this hydrovalve of flowing through
Theoretical, hydraulic oil pressure differential deltap p
TheoreticalAnd the flow area A of the valve port of hydrovalve
TheoreticalMeet aperture flow pressure reduction formula, thereby obtain the theoretical delivery pressure reduction relation curve of this hydrovalve.
And when this hydrovalve was applied in the oil hydraulic circuit, during through this hydrovalve, the hydraulic oil of this hydrovalve of flowing through had actual flow Q as hydraulic oil flow
Actual, with this actual flow Q
ActualTo Δ p should be arranged
ActualWith flow area A
ActualThrough comparison and Q
ActualCorresponding Δ p
TheoreticalWith Δ p
ActualBetween relation, thereby can obtain flow area A
TheoreticalWith flow area A
ActualRelation.Specifically, if Δ p
TheoreticalMeet Δ p
Actual(for example, Δ p
ActualEqual Δ p
Theoretical, perhaps Δ p
ActualFall into Δ p
TheoreticalThe permissible aberration scope in), the flow area A of the valve port of this hydrovalve then is described
ActualAlso meet A
Theoretical, can judge that therefore the spool action of this hydrovalve is a normal reliable.Otherwise, if Δ p
TheoreticalDo not meet Δ p
Actual, the flow area A of the valve port of this hydrovalve then is described
ActualDo not meet A yet
Theoretical, can judge that therefore the spool action of this hydrovalve is not a normal reliable, promptly there is fault.
Therefore; Whether the spool that can estimate hydrovalve through the variation of analyzing actual flow and actual pressure differential makes this hydrovalve have correct flow area; Thereby for each hydrovalve in the oil hydraulic circuit; Can judge exactly that there is fault in concrete which hydrovalve, thereby confirm the guilty culprit in the oil hydraulic circuit as early as possible.
As shown in Figure 1, in the actual moving process of oil hydraulic circuit, hydraulic oil gets in the hydrovalve and from oil outlet through oiler and flows out hydrovalve, and there is pressure difference in hydraulic oil between the oiler of said hydrovalve and oil outlet, and this pressure difference is actual pressure differential value Δ p
ActualIn addition, also need obtain the actual flow value Q of hydraulic oil at the oil outlet place of said hydrovalve
ActualThrough obtaining Q
ActualWith Δ p
Actual, above-mentioned parameter Q
ActualWith Δ p
ActualBe the real work parameter of this hydrovalve, thereby can reflect the actual working state of this hydrovalve.Simultaneously, with this actual pressure differential value Δ p of this hydrovalve actual working state of the expression of obtaining
ActualWith actual flow value Q
ActualCompare with the theoretical delivery pressure reduction relation curve of said hydrovalve, thereby confirm whether said hydrovalve exists fault.
Specifically, as shown in Figure 3, as stated, if Δ p
TheoreticalMeet Δ p
Actual, explain that then this hydrovalve is a normal reliable.Otherwise, if Δ p
TheoreticalDo not meet Δ p
Actual, explain that then this hydrovalve is not a normal reliable, promptly exists fault.
Whether in proper working order as estimating hydrovalve standard, to this hydrovalve, theoretical delivery pressure reduction relation curve is a relation curve as shown in Figure 3, and wherein, abscissa is a flow value, and y coordinate is a pressure difference.This theoretical delivery pressure reduction relation curve representes that hydraulic oil passes through the theoretical delivery Q of oil outlet
TheoreticalAnd the theoretical pressure difference Δ p that hydraulic oil exists between the oiler of hydrovalve and oil outlet
TheoreticalRelation curve.This theoretical delivery pressure reduction relation curve can obtain through following dual mode at least:
At first, the theoretical delivery pressure reduction relation curve of said hydrovalve can be the theoretical characteristics curve of this hydrovalve.For the hydrovalve product of standard or one-tenth series, general manufacturer can provide the special parameter of this hydrovalve, and wherein theoretical delivery pressure reduction relation curve can be the characteristic curve of hydrovalve product sample.Certainly, for different hydrovalve products, this theoretical characteristics curve is also different.Different hydrovalve products are because of differences such as valve design core diameter, valve port forms, and the differential pressure flow curve liquid of the valve of same model exists different.For example, the following sample data that founds the differential pressure flow curve of new hydraulicchange-over valve (WEH25 type electro hydraulic valve) for expression Shanghai.
In addition, can also detect the flow of said hydrovalve and the corresponding relation of pressure reduction, thereby obtain theoretical delivery pressure reduction relation curve through this hydrovalve product that does not have fault is made an experiment.Specifically, when the hydrovalve proper functioning of certain brand, through the flow of said hydrovalve, detect the pressure reduction of said hydrovalve between import under this flow and outlet simultaneously during the testing state, then can obtain the differential pressure flow curve of said hydrovalve; And on the equipment of same type under said method the differential pressure flow curve of this hydrovalve; At last, multi-group data is handled, got Maximum differential pressure value under the same traffic, thereby can obtain the flow differential pressure curve of said hydrovalve as the pressure difference under this flow.
In addition, to a hydrovalve, can also obtain the theoretical delivery pressure reduction relation curve of this hydrovalve through other modes.For example, can detect through the pressure difference under the real work flow of this hydrovalve, the numerical value that after multiply by power gain on this pressure difference, obtains, and the real work flow of this numerical value and this hydrovalve drawn the theoretical delivery differential pressure curve; Wherein, this power gain can consider spool wearing and tearing, detect the interference that error etc. causes, this coefficient generally provides through experience, also can through multiple devices repeatedly detect to the average weighted coefficient.And according to different applications, above-mentioned power gain is also different.
To a hydrovalve; Can obtain the theoretical delivery pressure reduction relation curve of this hydrovalve by the way; Thereby pass through to detect the actual operation parameters of this hydrovalve, and actual operation parameters and theoretical parameter are compared, to confirm whether this hydrovalve exists fault.
In addition, though the theoretical delivery differential pressure curve of in Fig. 3, representing is expressed as a curve.But it will be understood by those skilled in the art that this theoretical delivery differential pressure curve is not limited to this form, for example, can represent this theory differential pressure curve with a plurality of coordinate points.
About the actual operation parameters of this hydrovalve, can obtain through following mode.
Said actual pressure differential value obtains through following method: for example as shown in Figure 2; Detect the oiler force value of hydraulic oil at the oiler place of said hydrovalve; Detect the oil outlet force value of hydraulic oil at the oil outlet place of hydrovalve, it is said actual pressure differential value Δ p that this oiler force value deducts said oil outlet force value
ActualFor example, can detect said oiler force value and oil outlet force value respectively through pressure transducer.
Said actual flow value obtains through following method: according to oil hydraulic circuit; The movement velocity that calculating is connected on the executive component (like piston cylinder or oil hydraulic motor) on this hydrovalve obtains; Also can directly directly detect, also can under a certain particular flow rate of oil hydraulic circuit or peak rate of flow, carry out fault diagnosis through flowmeter.For example; Hydraulic oil in the oil hydraulic circuit is mostly driven by oil hydraulic pump; Therefore and the flow of the oil hydraulic pump of flowing through obtains than being easier to, and for the position control valve that directly is communicated with this oil hydraulic pump, the actual flow of the oil outlet of this position control valve equates with the pump discharge of oil hydraulic pump usually.For another example, for Proportional valve, the actual flow of the oil outlet of this Proportional valve and the proportional relation of the flow of oiler, and can obtain the actual flow value of the oil outlet of this Proportional valve through the flow of this proportionate relationship and system's hydraulic oil.
Perhaps, as shown in Figure 2, can also detect the actual flow value of hydraulic oil and obtain said actual flow value at the oil outlet place of hydrovalve.For example, can flow transducer be set at the oil outlet place of said hydrovalve or flowmeter carries out the detection of actual flow value.
For a hydrovalve, at the actual flow value Q that has obtained to represent this hydrovalve actual motion state
ActualWith actual pressure differential value Δ p
Actual, and after having obtained the theoretical delivery pressure reduction relation curve of this hydrovalve, the theoretical delivery pressure reduction relation curve of said actual pressure differential value and actual flow value and said hydrovalve is compared, wherein, this step comprises:
According to said actual flow value Q
ActualObtain and this actual flow value Q
ActualCorresponding theoretical pressure difference Δ p
Theoretical
Will with this actual flow value Q
ActualCorresponding theoretical pressure difference Δ p
TheoreticalWith said actual pressure differential value Δ p
ActualCompare, whether have failure judgment thereby make this hydrovalve according to this comparative result.
As stated, if Δ p
TheoreticalMeet Δ p
Actual, explain that then this hydrovalve is a normal reliable.Otherwise, if Δ p
TheoreticalDo not meet Δ p
Actual, explain that then this hydrovalve is not a normal reliable, promptly exists fault.
Δ p
ActualBe hydraulic oil at the oiler of this hydrovalve and the pressure difference between the oil outlet, so pressure difference is a data points, and with actual flow value Q
ActualCorresponding theoretical pressure difference Δ p
TheoreticalAlso be a data points, therefore can be with this two data points Δ p
TheoreticalWith Δ p
ActualCarry out the comparison of size.
For example, if actual flow value Q
ActualBe a flow value between the peak rate of flow and zero of this hydrovalve, then Δ p
ActualPossibly be greater than or less than and this actual flow value Q
ActualCorresponding Δ p
TheoreticalIf, but Δ p
ActualWith Δ p
TheoreticalBetween deviation be within the allowed band, think that then the two is corresponding, promptly hydrovalve does not have fault, otherwise thinks that there is fault in this hydrovalve.
For another example, if actual flow value Q
ActualBe the peak rate of flow (this moment, the oiler and the flow area between the oil outlet of hydrovalve were maximum, and promptly the aperture of this hydrovalve is maximum) of this hydrovalve, if then this hydrovalve has fault, promptly the aperture of this hydrovalve is big inadequately, then Δ p
ActualOnly maybe greater than with this actual flow value Q
ActualCorresponding Δ p
TheoreticalTherefore, in this case, if Δ p
ActualGreater than with this actual flow value Q
ActualCorresponding Δ p
Theoretical, show that then this hydrovalve has fault.
Preferably, will with this actual flow value Q
ActualCorresponding theoretical pressure difference Δ p
TheoreticalWith said actual pressure differential value Δ p
ActualCompare and comprise: will with said actual flow value Q
ActualCorresponding theoretical pressure difference Δ p
TheoreticalExtent of amendment and said actual pressure differential value Δ p
ActualCompare.
In this preferred implementation, for example shown in Figure 3, to said actual flow value Q
ActualCorresponding theoretical pressure difference Δ p revises, thus but the extent of amendment that obtains this theory pressure difference Δ p scope perhaps.If said actual pressure differential value Δ p
ActualFall into and said actual flow value Q
ActualCorresponding theoretical pressure difference Δ p
TheoreticalSaid extent of amendment within, then said hydrovalve is normal; If said actual pressure differential value Δ p
ActualFall into outside the said extent of amendment then said hydrovalve fault.
Normal root is according to different application and different really for this extent of amendment, but the principle of confirming is Δ p
ActualWith said actual flow value Q
ActualCorresponding theoretical pressure difference Δ p
TheoreticalBetween the deviation of this hydrovalve valve element position that deviation reflected do not influence the proper functioning of this hydrovalve.In other words; Even if the position of the spool of hydrovalve is not very accurate; If but this deviation or inaccuracy do not reach the degree that influences this hydrovalve proper functioning, then in the engineering field, still can be used as acceptable error and think that this hydrovalve is among the normal working state.
In addition, Δ p
ActualWith said actual flow value Q
ActualCorresponding theoretical pressure difference Δ p
TheoreticalCan also carry out the comparison of other modes, for example, can be according to Δ p
Actual/ Δ p
Theoretical(being the ratio of the two) judges whether said hydrovalve breaks down.
The technological scheme that the utility model provided is adapted to the various hydrovalve elements in the Hydraulic Field.
For example, the technological scheme of the utility model goes for various flow control valves, comprises throttle valve, series flow control valve, diverter valve, Proportional valve, servovalve etc.For various flow control valves, the oiler of this flow control valve and oil outlet are normally constant.
The technological scheme of the utility model can also be applicable to various position control valves, like one-way valve and spool-type valves etc.For one-way valve, oiler and oil outlet are normally constant.But for spool-type valves, oiler is normally constant, but oil outlet can along with the position of the spool of guiding valve request can and change to some extent, change the flow effect of direction of hydraulic oil thereby play.In this case, in any case, when by hydraulic oil from oiler flows into spool-type valves, and when an oil outlet flows out, always have corresponding oiler and oil outlet.The technological scheme of the utility model is also applicable to pressure controlled valve.
In addition, as shown in Figure 2, the technological scheme of the utility model is also applicable to the hydrovalve with drain tap (as have the reduction valve of drain tap, drain tap is communicated with fuel tank through the draining oil circuit usually).For this kind hydrovalve; Technique scheme comprises: before the theoretical delivery pressure reduction relation curve with said actual pressure differential value and actual flow value and said hydrovalve compares; Detect the drain tap pressure of hydraulic oil at the drain tap of said hydrovalve; If this drain tap pressure is higher than predetermined drain tap pressure, then handle the leakage oil circuit that is communicated with this drain tap of said oil hydraulic circuit, be not higher than predetermined drain tap pressure up to said drain tap pressure.
That is to say,, before whether definite this hydrovalve itself exists fault, confirm earlier whether the leakage oil circuit that links to each other with the drain tap of this hydrovalve exists fault (as whether blocking) for hydrovalve with drain tap.Specifically; When the drain tap of hydrovalve has hydraulic oil flow out-of-date; Can detect the drain tap pressure (because drain tap usually with fuel tank be communicated with, therefore, this drain tap pressure usually be not higher than reference value) of hydraulic oil at the drain tap place; If the drain tap overpressure, then there is fault in explanation leakage oil circuit.In this case, at first safeguard, to guarantee that leaking oil circuit fixes a breakdown leaking oil circuit.Do not have under the prerequisite of fault at the leakage oil circuit, remove to detect this hydrovalve itself again and whether have fault.
After the theoretical foundation of the technological scheme of the utility model was carried out detailed explanation, the technological scheme in the face of the utility model was described in detail down.According to an aspect of the utility model, provide to be applicable to the above-mentioned controller that is used for detecting the method for oil hydraulic circuit hydrovalve, promptly be used for detecting the controller of oil hydraulic circuit hydrovalve, this controller comprises:
Processing unit, this processing unit are used for the hydraulic oil that is obtained is compared at the actual flow value at the oil outlet place of said hydrovalve and the theoretical delivery pressure reduction relation curve of said hydrovalve in the oiler of said hydrovalve and the actual pressure differential value between the oil outlet and hydraulic oil; With
Output unit, this output unit are used for exporting the electrical signal whether said hydrovalve of expression exists fault according to the comparative result of said processing unit.
Hydraulic oil is the handled object data of processing unit of this controller in the oiler of said hydrovalve and the actual pressure differential value between the oil outlet and the actual flow value of hydraulic oil at the oil outlet place of said hydrovalve, and processing unit is with this actual pressure differential value Δ p
ActualWith actual flow value Q
ActualCompare with the theoretical delivery pressure reduction relation curve of this hydrovalve, thereby obtain representing the electrical signal of comparative result.Whether output unit exists the electrical signal of fault according to processing result (being comparative result) the output expression hydrovalve of processing unit.Output unit can also be electrically connected with other display unit (like light emitting diode, display device etc.), will the testing result of this hydrovalve be represented to the outside through these display unit.
As stated, the theoretical delivery pressure reduction relation curve of said hydrovalve is the theoretical characteristics curve of this hydrovalve, perhaps obtains through the flow of the said hydrovalve of test detection and the corresponding relation of pressure reduction.
Said actual pressure differential value can pass-through mode obtains: utilizes pressure transducer to detect the force value at this hydrovalve oiler and oil outlet place respectively, utilizes comparator to compare then and obtain the difference of these two force value, thus acquisition actual pressure differential value Δ p
ActualThen, again with this actual pressure differential value Δ p
ActualSend to said controller, transfer to this controller and carry out calculation process.
In addition; Preferably; Said controller also comprises receiving element; This receiving element is used to receive expression hydraulic oil at the electrical signal of the oiler force value at the oiler place of said hydrovalve and the expression hydraulic oil electrical signal in the oil outlet force value at the oil outlet place of hydrovalve, and said processing unit also is used for said oiler force value is deducted said oil outlet force value and obtains said actual pressure differential value.
That is to say; Processing unit in this controller is integrated with the function of comparator; After utilizing receiving element to receive the electrical signal of expression oiler force value and oil outlet force value, by processing unit these two electrical signal are compared again, thereby obtain the actual pressure differential value.
As stated, said actual flow value can calculate acquisition according to the flow to the oil hydraulic pump of the oiler fuel feeding of said hydrovalve.In this case, for this hydrovalve, the actual flow value is a known parameters, directly in the input controller, for the processing unit processes of controller.
Perhaps; Said controller also comprises receiving element; This receiving element is used to receive the electrical signal of expression hydraulic oil in the oiler force value at the oiler place of said hydrovalve; Represent the electrical signal of hydraulic oil in the oil outlet force value at the oil outlet place of hydrovalve, and represent the electrical signal of hydraulic oil at the actual flow value at the oil outlet place of hydrovalve, said processing unit also is used for said oiler force value is deducted said oil outlet force value and obtains said actual pressure differential value.
This mode of execution is applicable to and utilizes flow transducer to obtain the situation of hydraulic oil at the actual flow value at the oil outlet place of hydrovalve.Specifically, receiving element receives outside the electrical signal of hydraulic fluid port force value and oil outlet force value, and the expression hydraulic oil that also receives flow transducer and detected is at the electrical signal of the actual flow value at oil outlet place.Then, again actual pressure differential value that is obtained and actual flow value are sent to processing unit, carry out data processing for this processing unit.
Processing unit compares this actual flow value and actual pressure differential value and said theoretical delivery differential pressure curve after obtaining actual flow value and actual pressure differential value.Specifically, said processing unit is used for: according to said actual flow value Q
ActualObtain and this actual flow value Q
ActualCorresponding theoretical pressure difference Δ p
TheoreticalWill with this actual flow value Q
ActualCorresponding theoretical pressure difference Δ p
TheoreticalWith said actual pressure differential value Δ p
ActualCompare.For example, with this actual flow value Q
ActualCorresponding theoretical pressure difference Δ p
TheoreticalCan with said actual pressure differential value Δ p
ActualCarry out the size comparison, also can with this actual flow value Q
ActualCorresponding theoretical pressure difference Δ p
TheoreticalCorrection (permission) scope compare.
But preferably, said processing unit be used for with said actual flow value Q
ActualCorresponding theoretical pressure difference Δ p
TheoreticalExtent of amendment and said actual pressure differential value Δ p
ActualCompare.
If the comparative result of said processing unit is said actual pressure differential value Δ p
ActualFall into and said actual flow value Q
ActualCorresponding theoretical pressure difference Δ p
TheoreticalSaid extent of amendment within, the normal electrical signal of the then said output unit output said hydrovalve of expression; If the comparative result of said processing unit is said actual pressure differential value Δ p
ActualFall into outside the said extent of amendment electrical signal of the said hydrovalve fault of then said output unit output expression.
With said actual flow value Q
ActualCorresponding theoretical pressure difference Δ p
TheoreticalExtent of amendment according to different application operating modes different selections is arranged.About with said actual flow value Q
ActualCorresponding theoretical pressure difference Δ p
TheoreticalWith said actual pressure differential value Δ p
ActualCompare and to describe with reference to preceding text, repeat no more here.
The controller that the utility model provided can be used for detecting the various hydrovalves of oil hydraulic circuit, like position control valve, flow control valve or pressure controlled valve.
In addition, the controller that the utility model provided can also be used to detect the hydrovalve with drain tap, for example has the reduction valve of drain tap.Specifically; For hydrovalve with drain tap; Said processing unit can be used for: before the theoretical delivery pressure reduction relation curve with said actual pressure differential value and actual flow value and said hydrovalve compares; Relatively more predetermined drain tap pressure and hydraulic oil are at the drain tap pressure of the drain tap of said hydrovalve; Be not higher than under the situation of said predetermined drain tap pressure at this drain tap pressure, carry out the comparison of the theoretical delivery pressure reduction relation curve of said actual pressure differential value and actual flow value and said hydrovalve.
That is to say,, before whether definite this hydrovalve itself exists fault, confirm earlier whether the leakage oil circuit that links to each other with the drain tap of this hydrovalve exists fault (as whether blocking) for hydrovalve with drain tap.Leakage oil circuit at hydrovalve does not have to go to detect or estimate hydrovalve itself whether have fault again under the situation of fault (being that drain tap pressure is not higher than predetermined drain tap pressure).
Above-mentioned controller can be the device that PLC, single-chip microcomputer, microcomputer etc. can be used as controller.
One side again according to the utility model also provides a kind of device that is used for detecting the oil hydraulic circuit hydrovalve, and this device comprises:
Pressure transducer, this said pressure transducer are connected in series with the oiler and the oil outlet of said hydrovalve respectively, are used to detect hydraulic oil at the oiler pressure at the oiler place of said hydrovalve and the hydraulic oil oil outlet pressure at the oil outlet place of hydrovalve; With
Controller; This controller comprises processing unit and output unit, and the hydraulic oil that this processing unit will obtain according to the said oiler pressure and the oil outlet pressure of said sensor compares at the actual flow value at the oil outlet place of said hydrovalve and the theoretical delivery pressure reduction relation curve of said hydrovalve in the oiler of said hydrovalve and the actual pressure differential value between the oil outlet and hydraulic oil; Said output unit is used for exporting the electrical signal whether said hydrovalve of expression exists fault according to the comparative result of said processing unit.
The above-mentioned device that is used for detecting the oil hydraulic circuit hydrovalve comprises pressure transducer and the controller that cooperates with this pressure transducer, and wherein, this pressure controller can be the above-mentioned controller that the utility model provides.The technology contents that therefore, will be different from above-mentioned controller below to the device that is used for detecting the oil hydraulic circuit hydrovalve is described in detail.And simplify or omit description controller, about controller can with reference in the preceding text to the detailed description of controller.
Said pressure transducer is connected in series with the oiler and the oil outlet of said hydrovalve respectively, both can be arranged on the oil circuit that oiler and oil outlet with hydrovalve be connected in series, and also can be directly installed on the oiler and the oil outlet place of hydrovalve.Pressure transducer can be the sensor of existing various tracer liquid pressure, and concrete model can be selected according to concrete operating mode.
Pressure transducer obtain hydraulic oil at the oiler pressure at the oiler place of said hydrovalve and hydraulic oil behind the oil outlet pressure at the oil outlet place of hydrovalve, can obtain actual pressure differential value Δ p according to this oiler pressure and oil outlet pressure
Actual(for example, can through comparator output expression oiler pressure deduct oil outlet pressure electrical signal).
Then, the processing unit of controller is according to this actual pressure differential value Δ p
Actual, actual flow value Q
ActualJudge with the theoretical delivery differential pressure curve whether this hydrovalve exists fault.Concrete deterministic process is described hereinbefore in detail, here no longer narration.
Preferably, said theoretical delivery pressure reduction relation curve is the theoretical characteristics curve of this hydrovalve, perhaps obtains through the flow of the said hydrovalve of test detection and the corresponding relation of pressure reduction.
Preferably; Said controller also comprises receiving element; This receiving element is used to receive the expression hydraulic oil that comes from said pressure transducer at the electrical signal of the oiler force value at the oiler place of said hydrovalve and the expression hydraulic oil electrical signal in the oil outlet force value at the oil outlet place of hydrovalve, and said processing unit also is used for said oiler force value is deducted said oil outlet force value and obtains said actual pressure differential value.
For said actual flow value Q
Actual, as stated, said actual flow value Q
ActualCan calculate acquisition according to flow to the oil hydraulic pump of the oiler fuel feeding of said hydrovalve.
Perhaps, said sensor also comprises flow transducer, and this flow transducer is connected with the oil outlet of said hydrovalve, is used to detect the actual flow value Q of hydraulic oil at the oil outlet place of said hydrovalve
ActualFor example, this flow transducer can be installed on the oil circuit of connecting with the oil outlet of said hydrovalve, perhaps is directly installed on the oil outlet of this hydrovalve.Flow transducer can adopt the existing various sensor that is applicable to the collection liquid flow, and concrete model can be selected according to concrete operating mode to use.
Preferably; Said controller also comprises receiving element; This receiving element is used to receive the expression hydraulic oil that the comes from said pressure transducer electrical signal at the oiler pressure at the oiler place of said hydrovalve; Represent the electrical signal of hydraulic oil, and come from electrical signal (thereby the acquisition Q of the expression hydraulic oil of said flow transducer at the actual flow value at the oil outlet place of hydrovalve at the oil outlet pressure at the oil outlet place of hydrovalve
Actual), said processing unit also is used for said oiler pressure is subtracted said oil outlet pressure and obtains said actual pressure differential value Δ p
Actual
Obtaining Q
ActualWith Δ p
ActualAfterwards, the processing unit of said controller compares these two data and said theoretical delivery differential pressure curve again.Preferably, said processing unit is used for: according to said actual flow value Q
ActualObtain and this actual flow value Q
ActualCorresponding theoretical pressure difference Δ p
TheoreticalWill with this actual flow value Q
ActualCorresponding theoretical pressure difference Δ p
TheoreticalWith said actual pressure differential value Δ p
ActualCompare.
Preferably, said processing unit be used for with said actual flow value Q
ActualCorresponding theoretical pressure difference Δ p
TheoreticalExtent of amendment and said actual pressure differential value compare.In other words, this theory pressure differential deltap p
TheoreticalExtent of amendment also to can be considered be the error permission range.
If the comparative result of said processing unit is said actual pressure differential value Δ p
ActualFall into the theoretical pressure difference Δ p corresponding with said actual flow value
TheoreticalSaid extent of amendment within, the normal electrical signal of the then said output unit output said hydrovalve of expression; , the comparative result of said processing unit falls into outside the said extent of amendment electrical signal of the said hydrovalve fault of then said output unit output expression if being said actual pressure differential value.
The device that the utility model provided is used for detecting the oil hydraulic circuit hydrovalve goes for detecting position control valve, flow control valve or pressure controlled valve in the oil hydraulic circuit.Also go for comprising the hydrovalve (like reduction valve) of drain tap, wherein, said device also comprises the drain tap pressure transducer, and this drain tap pressure transducer is used to detect the drain tap pressure of hydraulic oil at the drain tap of said hydrovalve.Said receiving element also is used to receive the electrical signal of the said drain tap pressure of the expression that comes from the drain tap pressure transducer.Said processing unit is used for: with said actual pressure differential value Δ p
ActualWith actual flow value Q
ActualBefore comparing with the theoretical delivery pressure reduction relation curve of said hydrovalve; Relatively more predetermined drain tap pressure and hydraulic oil are at the drain tap pressure of the drain tap of said hydrovalve; Be not higher than under the situation of said predetermined drain tap pressure at this drain tap pressure, carry out the comparison of the theoretical delivery pressure reduction relation curve of said actual pressure differential value and actual flow value and said hydrovalve.
In addition, preferably, said hydrovalve is a plurality of.That is to say; The quantity of the hydrovalve in the oil hydraulic circuit is a plurality of; The above-mentioned device that is used for detecting the oil hydraulic circuit hydrovalve that utilizes that the utility model provides can detect any in these a plurality of hydrovalves; Perhaps detect a plurality of arbitrarily in these a plurality of hydrovalves simultaneously, thereby can confirm promptly concrete which hydrovalve breaks down in a plurality of hydrovalves of this oil hydraulic circuit.
In order to be adapted to a plurality of hydrovalves, the above-mentioned device that is used for detecting the oil hydraulic circuit hydrovalve can be a plurality of independent devices, thereby detects hydrovalve separately respectively; Perhaps said apparatus can be centralized device, and promptly controller concentrates in together, thereby can realize the centralized detecting to a plurality of hydrovalves.
Another aspect according to the utility model; A kind of device that detects the oil hydraulic circuit fault is provided; This oil hydraulic circuit comprises dynamical element, executive component and the control unit that connects this dynamical element and executive component; This control unit has a plurality of hydrovalves, and said device comprises the said apparatus that is used for detecting the oil hydraulic circuit hydrovalve that the utility model provides, and there is fault in which hydrovalve in said a plurality of hydrovalve to detect.
Oil hydraulic circuit comprises dynamical element, executive component and control unit, and wherein, dynamical element can be various oil hydraulic pumps, and the effect of dynamical element is the hydraulic pressure ability that mechanical energy is converted into hydraulic oil; Executive component can be various oil hydraulic cylinders and oil hydraulic motor, and the effect of executive component is that the hydraulic pressure with hydraulic oil can convert mechanical energy into; Control unit can be various hydrovalves, and the effect of control unit is pressure, flow and the direction of hydraulic oil in control and the regulator solution hydraulic circuit.In addition, oil hydraulic circuit also can comprise other auxiliary elements, like parts such as joint, accumulators, no longer is described in detail here.
Utilization is used for detecting the said apparatus of oil hydraulic circuit hydrovalve; The device of said detection oil hydraulic circuit fault can detect each hydrovalve in the oil hydraulic circuit; Thereby confirm that concrete which hydrovalve breaks down, thereby can locate the hydrovalve that breaks down exactly.
Description about the technique scheme that is used for detecting the oil hydraulic circuit hydrovalve in the preceding text can be attached in the technological scheme of above-mentioned detection oil hydraulic circuit in every way.
To combine the oil hydraulic circuit among Fig. 4 to describe how this oil hydraulic circuit is carried out faut detection below.
Shown in Figure 4 is a kind of hydraulic control circuit of concrete pump, and comprising three oil hydraulic pumps, wherein metering pump 10 is used to drive stirring motor 13, between metering pump 10 and stirring motor 13, is provided with first selector valve 100 as control unit; First variable displacement pump 11 is used for driving distribution oil cylinder 14, between first variable displacement pump 11 and distribution oil cylinder 14, is provided with second selector valve 200 as control unit; Second variable displacement pump 12 is used to drive main pump and send oil cylinder 15, send the 3rd selector valve 300 that is provided with between the oil cylinder 15 as control unit at second variable displacement pump 12 and main pump.In addition, also be provided with other a plurality of hydrovalves, to form complete oil hydraulic circuit.
In order to realize detection to the predetermined hydraulic pressure valve, in this oil hydraulic circuit, be provided with a plurality of Check points, on each Check point, required sensor can be set, be used to detect the pressure and/or the flow of hydraulic oil of this Check point of flowing through.The fault of how describing oil hydraulic circuit below in conjunction with several Check points that are provided with among Fig. 4 detects.
For example, as shown in Figure 4, be provided with Check point M14, M15 and M16 in the oil hydraulic circuit, be used to judge whether first selector valve 100 exists fault; Be provided with Check point M4, M5 and M6 in the oil hydraulic circuit, be used to judge whether second selector valve 200 exists fault; Be provided with M1, M2, M3 and M7 in the oil hydraulic circuit, be used to judge whether the 3rd selector valve 300 exists fault.
Such as in the running of hydraulic system; For first selector valve 100; Through comparing the pressure reduction between M14 and M15 or M14 and the M16, to obtain the actual pressure differential value, in conjunction with the actual flow value of the hydraulic oil that flows through this first selector valve 100; Through with the theoretical delivery differential pressure curve of this first selector valve 100, thereby can judge whether this first selector valve 100 exists fault.For second selector valve 200; Through comparing the pressure reduction between M6 and M4 or M6 and the M5; To obtain the actual pressure differential value; In conjunction with the actual flow value of the hydraulic oil that flows through this second selector valve 200, through with the theoretical delivery differential pressure curve of this second selector valve 200, thereby can judge whether second selector valve 200 exists fault.For the 3rd selector valve 300; Can judge through relatively pressure reduction between M7 and the M1 and the pressure reduction between M2 and the M3 whether spool when the 3rd selector valve 300 exists fault when being in orientation shown in Figure 4 upper, can judge through pressure reduction between comparison M7 and the M2 and the pressure reduction between M1 and the M3 whether spool when the 3rd selector valve 300 exists fault when being in orientation shown in Figure 4 the next.
In addition, in Fig. 4, also be provided with a plurality of Check points, like M8-M11 to other hydrovalves.Detection about these Check points and corresponding hydrovalve no longer is described in detail.
The technological scheme of utilizing the utility model to provide when oil hydraulic circuit is in the running, can utilize the sensor of each Check point setting that oil hydraulic circuit is monitored; Can judge on the whole whether this oil hydraulic circuit is in the normal running state on the one hand; On the other hand, if oil hydraulic circuit goes wrong, then can judge concrete which hydrovalve exactly and break down; Thereby can fix a breakdown as soon as possible, guarantee that system normally moves.This with only can judge on the whole whether system goes wrong traditionally, and accurately the traditional detection system that belongs to of fault location is compared, and has the technological progress of highly significant.
In addition; The utility model also provides a kind of oil hydraulic circuit fault processing system; This system comprises: the device of the above-mentioned detection oil hydraulic circuit fault that the utility model provided and the fault processing unit that is electrically connected with this device; This fault processing unit is used for existing at least one hydrovalve under the situation of fault in the Device Testing result of said detection oil hydraulic circuit fault, exports the fault treatment scheme corresponding with this testing result.
In other words, utilize this oil hydraulic circuit fault processing system can utilize the Device Testing result who detects the oil hydraulic circuit fault, and then to the operating personnel processing scheme is provided pointedly, handle to guide the operating personnel to carry out correspondence.For example, fault processing unit can store the various faults processing scheme that has the situation of fault at least one hydrovalve in advance, when any one failure condition occurring, can the fault treatment scheme be provided to this kind failure condition.
Fault processing unit can be logical compute device such as PLC or industrial computer.
Preferably, said fault processing unit comprises: storage, this storage are used to store the fault treatment scheme to each hydrovalve; Failure processor; This failure processor is electrically connected with the device of said storage and said detection oil hydraulic circuit fault; This failure processor is used for existing under the situation of fault at least one hydrovalve in the Device Testing result of said detection oil hydraulic circuit fault, reads and export the fault treatment scheme corresponding with this testing result of being stored in the said storage.
In this embodiment, fault processing unit also comprises storage, thereby can read and export corresponding fault treatment scheme according to failure condition.This storage is an internal storage, and promptly storage is integrated in the fault processing unit.But it is understandable that fault processing unit can also utilize external storage to store above-mentioned fault treatment scheme.
Preferably; That is stored in the said storage comprises interim processing method of fault and troubleshooting methodology to the fault treatment scheme of each hydrovalve, thus can according to different failure conditions select to request can the fault treatment scheme, for example; When breaking down situation; If the existence of this fault does not influence the continuation operation of system, then can select the interim processing method of fault in this case, for example the Operational Limits through adjust system guarantees that system works on; And if the existence of this fault influences the continuation operation of system, then can carry out as shutting down with troubleshooting methodologys such as replacing parts.
In order to be adapted to the different faults disposing condition; Preferably; Said fault processing unit also comprises the human-computer interaction device who is electrically connected with said failure processor; This human-computer interaction device has first option and second option, and when said first option was selected, said failure processor read from said storage and exports the interim processing method of said fault to said human-computer interaction device; When said second option was selected, said failure processor read from said storage and exports said troubleshooting methodology to said human-computer interaction device.In addition, the human-computer interaction device can also have multiple function, for example can integrated whole hydraulic system control function, can also be integrated with display device, with demonstration of carrying out various information etc., variety of option button etc. can also be provided as stated.
Preferably; Said failure processor also is electrically connected with the dynamical element (like oil hydraulic pump) of said oil hydraulic circuit; Device Testing result with in said detection oil hydraulic circuit fault exists at least one hydrovalve under the situation of fault, sends electrical signal out of service to said dynamical element.In this case, then can carry out the operations such as replacing of overhaul of the equipments, fault element.
Said failure processor can be the device separate with above-mentioned controller, but also can integrate with above-mentioned controller.
More than combine accompanying drawing to describe the preferred implementation of the utility model in detail; But; The utility model is not limited to the detail in the above-mentioned mode of execution; In the technical conceive scope of the utility model, can carry out multiple simple variant to the technological scheme of the utility model, these simple variant all belong to the protection domain of the utility model.
Need to prove that in addition each the concrete technical characteristics described in above-mentioned embodiment under reconcilable situation, can make up through any suitable manner.For fear of unnecessary repetition, the utility model is to the explanation no longer separately of various possible compound modes.
In addition, also can carry out combination in any between the various mode of execution of the utility model, as long as its thought without prejudice to the utility model, it should be regarded as content disclosed in the utility model equally.
Claims (11)
1. detect the controller of hydrovalve, it is characterized in that this controller comprises:
Processing unit, this processing unit are used for the hydraulic oil that is obtained is compared at the actual flow value at the oil outlet place of said hydrovalve and the theoretical delivery pressure reduction relation curve of said hydrovalve in the oiler of said hydrovalve and the actual pressure differential value between the oil outlet and hydraulic oil; With
Output unit, this output unit is electrically connected with said processing unit, is used for exporting the electrical signal whether said hydrovalve of expression exists fault according to the comparative result of said processing unit.
2. controller according to claim 1; It is characterized in that; Said controller also comprises receiving element; This receiving element is used to receive expression hydraulic oil at the electrical signal of the oiler force value at the oiler place of said hydrovalve and the expression hydraulic oil electrical signal in the oil outlet force value at the oil outlet place of hydrovalve
Said processing unit also is used for said oiler force value is deducted said oil outlet force value and obtains said actual pressure differential value.
3. controller according to claim 1; It is characterized in that; Said controller also comprises receiving element; This receiving element is used to receive the electrical signal of expression hydraulic oil in the oiler force value at the oiler place of said hydrovalve; Represent the electrical signal of hydraulic oil in the oil outlet force value at the oil outlet place of hydrovalve, and represent the electrical signal of hydraulic oil at the actual flow value at the oil outlet place of hydrovalve, said processing unit also is used for said oiler force value is deducted said oil outlet force value and obtains said actual pressure differential value.
4. controller according to claim 3 is characterized in that, said hydrovalve is position control valve, flow control valve or pressure controlled valve.
5. detect the device of hydrovalve, it is characterized in that this device comprises:
Pressure transducer, this said pressure transducer are connected in series with the oiler and the oil outlet of said hydrovalve respectively, are used to detect hydraulic oil at the oiler pressure at the oiler place of said hydrovalve and the hydraulic oil oil outlet pressure at the oil outlet place of hydrovalve; With
Controller; This controller is any described controller in the claim 1 to 4; This controller is electrically connected with said pressure transducer, and the hydraulic oil that the processing unit of said controller will obtain according to the said oiler pressure and the oil outlet pressure of said sensor compares at the actual flow value at the oil outlet place of said hydrovalve and the theoretical delivery pressure reduction relation curve of said hydrovalve in the oiler of said hydrovalve and the actual pressure differential value between the oil outlet and hydraulic oil; The output unit of said controller is used for exporting the electrical signal whether said hydrovalve of expression exists fault according to the comparative result of said processing unit.
6. device according to claim 5 is characterized in that, said hydrovalve is a plurality of.
7. detect the device of oil hydraulic circuit fault; It is characterized in that; This oil hydraulic circuit comprises dynamical element, executive component and the control unit that connects this dynamical element and executive component; This control unit has a plurality of hydrovalves, and said device comprises the described device of claim 5, and there is fault in which hydrovalve in said a plurality of hydrovalve to detect.
8. fault processing system; It is characterized in that; This system comprises: the device of the described detection oil hydraulic circuit of claim 7 fault and the fault processing unit that is electrically connected with this device; This fault processing unit is used for existing at least one hydrovalve under the situation of fault in the Device Testing result of said detection oil hydraulic circuit fault, exports the fault treatment scheme corresponding with this testing result.
9. fault processing system according to claim 8 is characterized in that, said fault processing unit comprises:
Storage, this storage are used to store the fault treatment scheme to each hydrovalve;
Failure processor; This failure processor is electrically connected with the device of said storage and said detection oil hydraulic circuit fault; This failure processor is used for existing under the situation of fault at least one hydrovalve in the Device Testing result of said detection oil hydraulic circuit fault, reads and export the fault treatment scheme corresponding with this testing result of being stored in the said storage.
10. fault processing system according to claim 9 is characterized in that,
Said fault processing unit also comprises the human-computer interaction device who is electrically connected with said failure processor; This human-computer interaction device has first option and second option; When said first option is selected; Said failure processor reads from said storage and exports the interim processing method of said fault to said human-computer interaction device, and when said second option was selected, said failure processor read from said storage and exports said troubleshooting methodology to said human-computer interaction device.
11. fault processing system according to claim 8; It is characterized in that; Failure processor also is electrically connected with the dynamical element of said oil hydraulic circuit; Device Testing result with in said detection oil hydraulic circuit fault exists at least one hydrovalve under the situation of fault, sends electrical signal out of service to said dynamical element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203115456U CN202251248U (en) | 2011-08-25 | 2011-08-25 | Controller and device for detecting hydraulic valve, device for detecting hydraulic circuit fault and fault processing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203115456U CN202251248U (en) | 2011-08-25 | 2011-08-25 | Controller and device for detecting hydraulic valve, device for detecting hydraulic circuit fault and fault processing system |
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| Publication Number | Publication Date |
|---|---|
| CN202251248U true CN202251248U (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203115456U Expired - Lifetime CN202251248U (en) | 2011-08-25 | 2011-08-25 | Controller and device for detecting hydraulic valve, device for detecting hydraulic circuit fault and fault processing system |
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| CN (1) | CN202251248U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338137A (en) * | 2011-08-25 | 2012-02-01 | 中联重科股份有限公司 | Method for detecting hydraulic valve, controller and device, method and device for detecting fault of hydraulic circuit and fault processing system |
| CN102852780A (en) * | 2012-09-18 | 2013-01-02 | 北京二七轨道交通装备有限责任公司 | Method and device for detecting hydraulic drive pump |
| CN112412905A (en) * | 2020-11-17 | 2021-02-26 | 广东纳睿雷达科技股份有限公司 | Hydraulic synchronizing device protection circuit and hydraulic synchronizing device |
| CN113482986A (en) * | 2021-06-23 | 2021-10-08 | 河北津西钢板桩型钢科技有限公司 | Fault detection circuit and equipment of hydraulic control valve |
| CN114425271A (en) * | 2020-10-29 | 2022-05-03 | 中国石油化工股份有限公司 | Discharging metering device for paste materials |
| WO2023109049A1 (en) * | 2021-12-17 | 2023-06-22 | 中联重科建筑起重机械有限责任公司 | Intelligent hydraulic system and hydraulic jacking device |
-
2011
- 2011-08-25 CN CN2011203115456U patent/CN202251248U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338137A (en) * | 2011-08-25 | 2012-02-01 | 中联重科股份有限公司 | Method for detecting hydraulic valve, controller and device, method and device for detecting fault of hydraulic circuit and fault processing system |
| CN102852780A (en) * | 2012-09-18 | 2013-01-02 | 北京二七轨道交通装备有限责任公司 | Method and device for detecting hydraulic drive pump |
| CN102852780B (en) * | 2012-09-18 | 2015-04-15 | 北京二七轨道交通装备有限责任公司 | Method and device for detecting hydraulic drive pump |
| CN114425271A (en) * | 2020-10-29 | 2022-05-03 | 中国石油化工股份有限公司 | Discharging metering device for paste materials |
| CN112412905A (en) * | 2020-11-17 | 2021-02-26 | 广东纳睿雷达科技股份有限公司 | Hydraulic synchronizing device protection circuit and hydraulic synchronizing device |
| CN113482986A (en) * | 2021-06-23 | 2021-10-08 | 河北津西钢板桩型钢科技有限公司 | Fault detection circuit and equipment of hydraulic control valve |
| WO2023109049A1 (en) * | 2021-12-17 | 2023-06-22 | 中联重科建筑起重机械有限责任公司 | Intelligent hydraulic system and hydraulic jacking device |
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