CN101328917A - System and method for on-line monitoring hydraulic oil and lubricant oil conditions - Google Patents
System and method for on-line monitoring hydraulic oil and lubricant oil conditions Download PDFInfo
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- CN101328917A CN101328917A CNA200810062520XA CN200810062520A CN101328917A CN 101328917 A CN101328917 A CN 101328917A CN A200810062520X A CNA200810062520X A CN A200810062520XA CN 200810062520 A CN200810062520 A CN 200810062520A CN 101328917 A CN101328917 A CN 101328917A
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 5
- 239000012535 impurity Substances 0.000 claims abstract description 5
- 238000013480 data collection Methods 0.000 claims abstract description 3
- 238000001514 detection method Methods 0.000 claims abstract 4
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- 238000012806 monitoring device Methods 0.000 claims description 14
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- 230000007613 environmental effect Effects 0.000 claims description 9
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- 230000001050 lubricating effect Effects 0.000 description 1
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Abstract
The invention relates to an oil condition on-line monitoring system of hydraulic oil and lubricating oil, and is characterized in that the system consists of an oil condition detection and sensing system, an environment monitoring system, a data collection and conversion system, an operation procedure, a warning (caution) system and an automatic implementing system; a bypass and an oil storage chamber are arranged on an oil station; each monitoring unit is fixed to monitor an oil viscosity, a micro-moisture content, a temperature, impurity, a pressure and other parameters in real time; an actual measured value is compared with the set value; when the actual measured value excesses an allowed range, the system automatically warns or implements the functions of closing, self-locking, etc.
Description
Technical field
The present invention relates to the mechanical lubrication field, especially refer to a kind of hydraulic oil, lubricant oil on-line monitoring system and method.
Background technique
In large-scale running device, be unable to do without hydraulic system and lubrication system.Hydraulic pressure is one of main kind of drive.Hydraulic oil is the medium of transmitted power, again hydraulic element are played lubricated, sealing and cooling action, the main effect of lubricant oil is the lubricated and cooling to transmission part, determining the working efficiency and the working life of equipment, therefore, You situation is very important for the working condition and the service behaviour of hydraulic system.
Hydraulic pressure, lubricant oil failure reasons:
(1) temperatures involved
1. lubricant oil is in the hot environment for a long time, understands oxidation deactivation, the phenomenon of blackening, retrogradation occurs.
2. the corrosion thing of lubricant oil inside increases, as the acidic materials that form in the engine operation etc.
(2) impurity
Be mainly derived from airborne dust, metal worn particle, effusion (fuel oil, water etc.), oil ageing thing etc.
(3) additive, viscosity index improver lost efficacy
Some lubricant oil were because additive wherein lost efficacy or used up and decreased performance.For example the antiwear additive in the lubricant oil uses up, and wear resistance is descended.Perhaps because the fracture of the organic molecule long-chain of viscosity index improver no longer has viscosifying action.
(4) water content in oil exceeds standard
Water can make hydraulic oil, emulsification of lubricant, makes additives decompose, promotes the oxidation of oil product and strengthen the corrosion of low molecular organic acids to machinery.Influence the oil product low temperature flow, the source of moisture mainly be the open fire that sternly do not enter of seal of vessel, water in air divide or fail commentaries on classics equipment, reservoir vessel is unclean causes.
Change the method for hydraulic oil, lubricant oil periodic oil change commonly used at present, promptly, change oil by the cycle of determining according to structural characteristics, operating conditions and the oil quality of hydraulic system.But the phenomenon that fluid is safeguarded has appearred not changing when this is changed oil, but carrying out in the time of needn't changing oil in this method easily, causes the waste and the equipment operation lost of life of manpower and materials.The hydraulic system of general heavy construction equipment (as tower belt crane) all is very huge, and the oil capacity of hydraulic oil is several cubes at least in the system, dozens of cube at most, and the expense of once changing oil is very high.According to statistics, the annual mode that adopts periodic oil change of the tower belt crane that uses in the Three Gorges Dam construction, the expense of changing oil hundreds of thousands dollar.1 year lubricated, hydraulic oil consumption ton up to a hundred of certain steel works combine if can dynamically monitor with the cycle chemical examination, add necessary oil strain facility, and year can be saved 1,000,000 yuan at least.Therefore adopt the irregularly mode of changing oil of " monitoring of dynamic oil condition, condition based maintenance " to seem more important; it helps to reduce unnecessary part replacement; and can in time take the maintenance action, to reduce the further damage of hydraulic pressure, lubricating utensil, reduce dead time.But the dynamic monitoring of present oily condition does not also come into one's own, and does not have ripe online oily condition monitoring system and method yet.
Summary of the invention
Technical problem to be solved by this invention is exactly to provide a kind of hydraulic oil, lubricant oil on-line monitoring system and method at the above-mentioned state of the art.
The present invention addresses the above problem the technological scheme of being taked: according to the present situation situation, operating temperature, water content in oil, well cuts, oily four leading indicators of stickiness and ambient temperature, humidity, three auxiliary characteristics of loine pressure at oil are carried out on-line monitoring, measured data and normal data or setting value relatively are delivered to terminal with the result or carry out alarm, oil strain, function such as close.
This on-line monitoring system is detected sensed system, environmental monitoring system, data capture converting system, programmed sequence of operations, alarm (caution) system and automatically performed system by oily condition to be formed, and details are as follows:
1, oily condition detects sensed system
By one or more composition the in the following parameter unit:
(1) oily temperature monitor: select temperature transducer for use, the real time information that oil is warm sends out.
(2) little water on-line monitoring device in the oil: select little water sensor in the oil for use, the real time information of water content in oil is sent out.
(3) well cuts on-line monitoring device: select online dustiness monitoring device for use, its groundwork principle is: be provided with many places passages such as 4,6,14,21 microns in determination unit, light source adopts laser diode, by the solid impurity quantity of passing through in the analytical unit time internal channel, and data-signal spread out of, with the reference value contrast, judge fuel-displaced pollution condition.
(4) You viscosity on-line monitoring device: can plate layer of metal on the two sides of the white sheet of quartz crystal and be made into the little balance of crystal (QCM) as the two poles of the earth, an electro coupled oscillator by the outside drives, when adding the electric field of certain frequency at the two poles of the earth, QCM can be with certain hunting of frequency, and this frequency is to be determined by the viscosity of quality on the electrode and liquid and density.This frequency variation signal is transmitted out, understand the real-time viscosity situation of oil by data acquisition and processing (DAP).Also can utilize digital rotational viscometer, sampling detects, and gives data acquisition and conversion system data transfer.
(5) oil pressure monitor: select pressure transducer (transmitter) for use, the fuel injection pressure signal at necessary position in the oil system is gathered in real time and sent out.
2, environmental monitoring system
Environmental monitoring system comprises temperature, humidity transducer, and the monitoring of environmental situation sends out temperature-humidity signal in real time.Environmental monitoring system as auxiliary parameter for can select system for use, the restriction that other system is not had or not by this system.
3, data capture converting system
The measured signal that sensor is spread out of collects, and after signal conditioning circuit, analog to digital conversion circuit, microprocessor processes, by Field bus data is sent to data processing server.
4, programmed sequence of operations
Be to need and concrete limited range establishment user programmed sequence of operations, be presented at user terminal gathering the data in real time of coming according to user job, and with the reference value contrast of setting, occur starting alarm (caution) system immediately or automatically performing system when unusual.
5, alarm (caution) system
It is the auto-programming start-up system that is provided with in order in time to remind operator, when the reference value of parameter such as the viscosity of oil temperature, water content in oil, well cuts, oil, oil pressure and setting contrasts, when departing from allowed band, in time remind the user to take corresponding measure by program control, can select in literal, picture prompting, animation, light or the sound caution one or more for use.
6, automatically perform system
Be by programme controlled automatic start up system, comprise automatic-closing valve, start oil filter etc. automatically.
Concrete operation method:
On the circulation loop at hydraulic pressure or lubricant oil station, bypass is set, with the oil temperature, little water sensor (transmitter) in the oil, the well cuts sensor is installed in the bypass, one little sampling room is set on fuel reserve tank takes a sample by oil pump, oily viscosity transducer is installed in the sampling room, oil pressure sensor is installed on the pipeline by demand, ambient temperature and humidity sensor (transmitter) is installed on the wall of working room or near the fuel tank, signal everywhere is sent to the data capture converting system by datawire, is converted into and is transferred to single-chip microcomputer after the digital signal or process control machine shows or carry out corresponding program.
Description of drawings
Fig. 1 is an embodiment of the invention schematic representation;
Embodiment
As shown in Figure 1, on the main oil outlet tube (2) of oil station (1), a bypass (4) is set, make the part working oil by well cuts on-line monitoring device (5), one bypass (6) is set on main return tube (3), above little water on-line monitoring device (8) is installed in oil temperature monitor (7) and the oil, go up installation oil pressure monitor (10) at arm (9), in fuel tank (11) top one little accumulator (12) is set, from fuel tank (11), extract oil sample by oil pump (13), the viscosity on-line monitoring device (14) of oil is housed in accumulator (12), the environment temperature, humidity transducer (15) is installed near the oil station, data capture converting system (16) is with each monitor, the data collection that sensor obtains converts digital signal to and transfers to computer (17), computer has control program in (17), go up the demonstration signal at display device (18), figure or numeral, or drive and to automatically perform startup and the shutoff program of setting in the system (19), when sharply reducing as data when oil pressure monitor (10) (oil pipe explosion) automatically shut down the valve (20) of front end immediately.
Each monitor above-mentioned both can have been installed one group and also can install as required two groups more and organize.The gentle oil pressure data of oil also can be the periods of other demands for the cycle of gathering (blanking time is less than 0.1s) other data captures in real time can be 10 minutes, 1 hour, 3 hours, 8 hours, 24 hours.
Embodiment:
With certain steel plant continuous casting hydraulic station is example: adopt N 32 Great Wall boards 4632 ester type fire resistant hydraulic fluids, standard movement viscosity is 28.8～35.2mm
2/ s, allowing water content is 0.02%, allowing impurity content is 0.005%, allows operating temperature below 60 ℃, working pressure 8MPa.
By top method monitor, sensor and monitoring system are set, monitoring result is as follows constantly for certain:
Claims (7)
1, hydraulic oil, lubricant oil oil condition on-line monitoring system is characterized in that by oily condition detection sensed system, environmental monitoring system, data capture converting system, programmed sequence of operations, alarm (caution) system and automatically perform system forming, wherein:
The oil condition detects sensed system and is used for viscosity, well cuts and the oily pressure condition of the operating oil of online detection temperature, water content in oil, oil, and real time data is delivered to the data capture converting system;
Environmental monitoring system is to be used for monitoring of environmental temperature, humidity, and the signal that real-time monitors is sent to the data capture converting system;
The data capture converting system is that the measured signal that each sensor spreads out of is collected, and after signal conditioning circuit, analog to digital conversion circuit, microprocessor processes, by Field bus data is sent to data processing server;
Programmed sequence of operations is the executive routine system according to user job needs and concrete limited range is worked out, be presented at user terminal with gathering the data in real time of coming, and with the reference value contrast of setting, occur starting alarm (caution) system immediately or automatically performing system when unusual;
Alarm (caution) system is by programme controlled automatic system for prompting when oily condition index departs from allowed band;
The system of automatically performing is by programme controlled automatic start up system, comprises automatic-closing valve, starts oil filter and other correlation functions automatically.
2, oily condition detection sensed system according to claim 1 is characterized in that by one or more composition the in the following parameter unit:
(1) oily temperature monitor: select temperature transducer for use, the real time information that oil is warm sends out;
(2) little water on-line monitoring device in the oil: select little water sensor in the oil for use, the real time information of detected water content in oil is sent out;
(3) well cuts on-line monitoring device: select online dustiness monitoring device for use, the solid impurity quantity of passing through in the analytical unit time channel, and data-signal spread out of;
(4) You viscosity on-line monitoring device: can select the little balance of crystal (QCM) oscillator also can utilize digital rotational viscometer, sampling detects, and gives data acquisition and conversion system the viscosity data transfer of oil;
(5) oil pressure monitor: select pressure transducer (transmitter) for use, the fuel injection pressure signal at necessary position in the oil system is sent out in real time.
3, alarm according to claim 1 (caution) system is characterized in that adopting one or more forms in literal, animation, sound, the light.
4, hydraulic oil according to claim 1, lubricant oil oil condition on-line monitoring system, it is characterized in that environmental monitoring system as auxiliary parameter for can select system for use, the restriction that other system is not had or not by this system.
5, hydraulic oil, the method of lubricant oil oil condition on-line monitoring, it is characterized in that: on the main oil outlet tube (2) of oil station (1), a bypass (4) is set, make it pass through well cuts on-line monitoring device (5), one bypass (6) is set on main return tube (3), above little water on-line monitoring device (8) is installed in oil temperature monitor (7) and the oil, go up installation oil pressure monitor (10) at arm (9), in fuel tank (11) top one little accumulator (12) is set, from fuel tank (11), extract oil sample by oil pump (13), the viscosity on-line monitoring device (14) of oil is housed in accumulator (12), the environment temperature, humidity transducer (15) is installed near the oil station, data capture converting system (16) is with each monitor, the data collection that sensor obtains converts digital signal to and transfers to computer (17), computer has control program in (17), go up the demonstration signal at display device (18), figure or numeral, or drive startup and the shutoff program of setting in the system (19) that automatically perform.
6, the various monitors of selecting for use in the method according to the described hydraulic oil of claim 5, lubricant oil oil condition on-line monitoring is characterized in that selecting one of them index or a plurality of index, and every kind of monitor quantity can also can be installed two or more sets for one group.
7, the method for hydraulic oil according to claim 5, lubricant oil oil condition on-line monitoring, it is characterized in that oily gentle oil pressure data are for gathering (blanking time is less than 0.1s) in real time, the cycle of other data captures can be 10 minutes, 1 hour, 3 hours, 8 hours, 24 hours, also can be the period of other demands.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810062520XA CN101328917A (en) | 2008-06-13 | 2008-06-13 | System and method for on-line monitoring hydraulic oil and lubricant oil conditions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810062520XA CN101328917A (en) | 2008-06-13 | 2008-06-13 | System and method for on-line monitoring hydraulic oil and lubricant oil conditions |
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| CN101328917A true CN101328917A (en) | 2008-12-24 |
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| CNA200810062520XA Pending CN101328917A (en) | 2008-06-13 | 2008-06-13 | System and method for on-line monitoring hydraulic oil and lubricant oil conditions |
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2008
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| CN111971556A (en) * | 2018-03-30 | 2020-11-20 | 日本邮船株式会社 | Moisture contamination detection device, moisture contamination detection program, moisture contamination detection method, and moisture contamination detection system |
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