CN116336394B - Automatic medium cavity discharging system and self-detection method thereof - Google Patents
Automatic medium cavity discharging system and self-detection method thereof Download PDFInfo
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- CN116336394B CN116336394B CN202310629529.9A CN202310629529A CN116336394B CN 116336394 B CN116336394 B CN 116336394B CN 202310629529 A CN202310629529 A CN 202310629529A CN 116336394 B CN116336394 B CN 116336394B
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- 238000001514 detection method Methods 0.000 title claims abstract description 71
- 238000007599 discharging Methods 0.000 title claims abstract description 19
- 238000004891 communication Methods 0.000 claims abstract description 38
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 8
- 230000008569 process Effects 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims description 59
- 230000003993 interaction Effects 0.000 claims description 53
- 238000007789 sealing Methods 0.000 claims description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 238000010998 test method Methods 0.000 claims description 5
- 230000002045 lasting effect Effects 0.000 claims description 2
- 230000001276 controlling effect Effects 0.000 description 4
- 238000005070 sampling Methods 0.000 description 3
- 238000013022 venting Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
- F16K11/105—Three-way check or safety valves with two or more closure members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/025—Check valves with guided rigid valve members the valve being loaded by a spring
- F16K15/026—Check valves with guided rigid valve members the valve being loaded by a spring the valve member being a movable body around which the medium flows when the valve is open
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/07—Arrangement or mounting of devices, e.g. valves, for venting or aerating or draining
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/10—Arrangements for supervising or controlling working operations for taking out the product in the line
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention relates to a middle cavity automatic discharging system and a self-detection method thereof, wherein the middle cavity automatic discharging system consists of a first pipe joint, a first communication pipe, a first clamping sleeve angle needle valve, a second clamping sleeve angle needle valve, a leakage detection pipe, a second communication pipe, a third communication pipe, a clamping sleeve type one-way valve, a four-way valve, a fourth communication pipe, a second pipe joint and a pressure gauge; the first pipe joint is connected with the upstream end or the downstream end of the valve, and the second pipe joint is connected with the valve middle cavity of the valve. The invention provides a highly integrated automatic medium cavity relief system with a simple structure, which can realize automatic pressure relief after the medium cavity of a valve is overpressured and observe the overpressure pressure, so that technicians can process the system in time, and the safe operation of the valve is ensured.
Description
Technical Field
The invention belongs to the field of hydraulic valves, and particularly relates to an automatic medium cavity discharging system and a self-detection method thereof.
Background
It is known to use on-off or shut-off valves in large numbers in liquid medium transport pipelines. When the valve is closed, the liquid medium can be accumulated in the valve cavity, if the liquid medium is changed from a liquid state to a gas state due to temperature change or other reasons, the liquid medium accumulated in the valve cavity can expand rapidly, so that the pressure of the valve cavity is increased sharply, and the increased pressure is often in the form of geometric progression. The valve is easy to damage due to the overpressure of the valve middle cavity, so that the valve is usually required to be provided with a valve middle cavity overpressure protection device so as to release the pressure of the valve middle cavity and ensure the safe operation of the valve.
The existing valve middle cavity relief device is divided into an inner relief mode or an outer relief mode, wherein in the technical scheme of the outer relief mode, the real-time monitoring of the valve middle cavity pressure is realized through arranging an automatic relief pipeline, and the overpressure is automatically relieved. Meanwhile, when the automatic relief pipeline fails, the manual relief pipeline is utilized for manual relief, and the automatic relief pipeline is overhauled. However, the above arrangement forms are provided with an automatic discharge pipe and a manual discharge pipe, respectively, so that on one hand, the structure is complex, and on the other hand, the quality of the transported liquid medium cannot be monitored in real time. Moreover, the above-described bleed device is not capable of self-testing to determine the location of the fault, nor is it capable of automatic maintenance of the fault that occurred. Therefore, the pressure relief mode has limitation, and needs to be further improved.
Disclosure of Invention
The invention aims to provide a middle cavity automatic discharging system and a self-detection method thereof, which are used for solving the technical problems in the prior art.
In order to achieve the above object, the present invention provides the following technical solutions:
the automatic middle cavity discharging system consists of a first pipe joint, a first communication pipe, a first clamping sleeve angle type needle valve, a second clamping sleeve angle type needle valve, a leakage detection pipe, a second communication pipe, a third communication pipe, a clamping sleeve type check valve, a four-way valve, a fourth communication pipe, a second pipe joint and a pressure gauge;
the right end of the first pipe joint is provided with pipe threads and is in threaded connection with a valve body of a valve, and the left end of the first pipe joint is connected with the first communication pipe through a clamping sleeve; the left end of the first communicating pipe is connected with the right end port of the first cutting ferrule angle type needle valve, and the lower end port of the first cutting ferrule angle type needle valve is connected with the second communicating pipe;
the right end of the second pipe joint is provided with pipe threads and is in threaded connection with the valve body, the left end of the second pipe joint is connected with the fourth communicating pipe through a clamping sleeve, the left end of the fourth communicating pipe is connected with a right end port of the four-way valve, the other three ports of the four-way valve are respectively connected with the clamping sleeve type one-way valve, the third communicating pipe and the pressure gauge, the lower end of the clamping sleeve type one-way valve is connected with the second communicating pipe, and the clamping sleeve type one-way valve is communicated in the direction from the four-way valve to the second communicating pipe;
one port of the second cutting ferrule angle type needle valve is connected with the third communicating pipe, and the other port of the second cutting ferrule angle type needle valve is connected with the leakage detecting pipe.
Preferably, the first pipe joint is connected with the upstream end or the downstream end of the valve, and the second pipe joint is connected with the valve middle cavity of the valve.
Preferably, the first cartridge angle needle valve is provided with a first operator for opening or closing the first cartridge angle needle valve; the second cutting sleeve angle type needle valve is provided with a second operator, and the second operator is used for opening or closing the second cutting sleeve angle type needle valve; wherein the first and second operators may be both automatically operated or manually operated.
Preferably, the automatic medium cavity venting system further comprises a control device for controlling actions of an actuator, the first operator and the second operator, wherein the actuator is used for opening or closing the valve.
Preferably, the automatic medium cavity drainage system is further provided with a first sensor, a second sensor, a third sensor and an interaction device, and the control device is respectively in communication connection with the first sensor, the second sensor, the third sensor and the interaction device; the first sensor is used for detecting the pressure in the four-way valve; the second sensor is used for detecting the liquid medium existing in the leakage detection pipe; the third sensor is used for detecting the liquid medium in the first communication pipe; the control device receives detection signals of the first sensor, the second sensor and the third sensor and controls the interaction device to work according to the detection signals.
Preferably, the clamping sleeve type one-way valve comprises a one-way valve body, a one-way valve core arranged in the one-way valve body, and a return spring with one end propped against the one-way valve core is arranged in the one-way valve body; the valve core of the one-way valve is provided with a first groove, a sealing ring is arranged in the first groove, the valve core of the one-way valve is also provided with a second groove, and an iron core is arranged in the second groove; and a solenoid is arranged outside the check valve body and used for driving the iron core to reciprocate.
A self-test method for the automatic relief system of a cavity, comprising the steps of:
step one: the control device controls the actuator to close the valve and simultaneously controls the first operator and the second operator to act so as to close the first cutting ferrule angle type needle valve and open the second cutting ferrule angle type needle valve; the control device receives the detection signal of the second sensor to judge whether the liquid medium exists in the leakage detection pipe, and if the liquid medium does not exist in the leakage detection pipe, the second step is continuously executed; otherwise, controlling the interaction device to be in a first working mode;
step two: the control device controls the first manipulator to act so as to open the first cutting sleeve angle type needle valve; the control device receives the detection signal of the second sensor to judge whether the liquid medium exists in the leakage detection pipe, and if the liquid medium does not exist in the leakage detection pipe, the step three is continuously executed; otherwise, controlling the interaction device to be in a second working mode;
step three: the control device controls the second manipulator to act so as to close the second cutting sleeve angle type needle valve, then controls the actuator to open the valve firstly, and closes the valve after lasting for a designated time, so that the cavity in the valve is pressurized; the control device receives the detection signal of the third sensor to judge whether the discharged liquid medium exists in the first communication pipe, and controls the interaction device to be in a third working mode or a fourth working mode according to the received signal.
Preferably, the first working mode is that the interaction device displays ' self-checking is stopped ', the valve is not in a normal working state, and checking is requested in time ';
the second working mode is that the interaction device displays a 'cutting sleeve type check valve sealing failure, please process in time';
when detecting that the discharged liquid medium exists in the first communication pipe, the control device controls the interaction device to be in the third working mode, wherein the third working mode is that the interaction device displays 'equipment self-detection is completed and the function is normal';
when detecting that no discharged liquid medium exists in the first communication pipe, the control device controls the interaction device to be in the fourth working mode, and the fourth working mode displays a 'cutting sleeve type one-way valve function fault' for the interaction device, and the trouble is timely checked.
Preferably, when the control device controls the interaction device to be in the first working mode, the interaction device further displays a check-out button to prompt a technician whether to perform check-out operation, and when the technician selects check-out, the control device closes the second cutting ferrule angle needle valve and controls the actuator to act so as to perform at least one operation of opening and closing the valve.
Preferably, when the control device controls the interaction device to be in the fourth working mode, the interaction device also displays a check-out confirmation button to prompt a technician whether to perform check-out operation, and when the technician selects check-out confirmation, the control device controls the solenoid to be electrified so as to drive the check valve core to reciprocate.
Compared with the prior art, the automatic medium cavity discharging system and the self-detection method thereof provided by the invention have the following beneficial technical effects:
1. the invention provides a highly integrated automatic medium cavity relief system with a simple structure, which can realize automatic pressure relief after the medium cavity of a valve is overpressured and observe the overpressure pressure, so that technicians can process the system in time, and the safe operation of the valve is ensured.
2. When the valve is in a closed state, the transported liquid medium is sampled by utilizing the sampling port provided by the middle cavity automatic discharging system, so that technicians can know the quality of the transported liquid medium in time, and the quality of the liquid medium can be conveniently and subsequently analyzed.
3. The automatic middle cavity discharging system provided by the invention is provided with the control device, the control device can control the first cutting sleeve angle type needle valve and the second cutting sleeve angle type needle valve to perform different operations, and can perform self-detection on whether each sealing performance and function of the valve are normal or not and inform technicians of timely making correct processing operations or not.
4. The self-detection method of the automatic middle cavity discharge system provided by the invention can not only simply and effectively confirm whether each sealing performance and function of the valve are normal according to the received detection signals, but also control the interaction device to make different response actions according to the received different detection signals so as to timely remove the functional faults of the valve and the clamping sleeve type one-way valve and ensure that the automatic middle cavity discharge system is in a normal working state.
Drawings
FIG. 1 is a schematic diagram of the automatic cavity bleed system of the present invention;
FIG. 2 is a schematic illustration of an application of the automatic cavity bleed system of the present invention;
fig. 3 is a schematic structural view of the ferrule type check valve in the present invention.
Wherein the reference symbols in the figures have the following meanings:
1. a medium cavity automatic relief system; 2. a plug; 3. a switch valve; 11. a first pipe joint; 12. a first communication pipe; 13. a first ferrule angle needle valve; 14. a second ferrule angle needle valve; 15. a leak detection pipe; 16. a second communicating pipe; 17. a third communicating pipe; 18. a sleeve-type one-way valve; 19. a four-way valve; 20. a fourth communicating pipe; 21. a second pipe joint; 131. a first operator; 141. a second operator; 191. a pressure gauge; 181. a check valve body; 182. a check valve core; 183. a seal ring; 184. a return spring; 185. an iron core; 186. a solenoid.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It will be apparent that the described embodiments are some, but not all, embodiments of the invention.
Thus, the following detailed description of the embodiments of the invention is not intended to limit the scope of the invention, as claimed, but is merely representative of some embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, under the condition of no conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, the terms "upper", "lower", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or an azimuth or a positional relationship conventionally put in use of the inventive product, or an azimuth or a positional relationship conventionally understood by those skilled in the art, such terms are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element to be referred must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Example 1
As shown in fig. 1 to 3, the present invention provides a middle chamber automatic relief system 1 for an on-off valve, the middle chamber automatic relief system 1 being composed of a first pipe joint 11, a first communication pipe 12, a first cutting ferrule angle needle valve 13, a second cutting ferrule angle needle valve 14, a leak detection pipe 15, a second communication pipe 16, a third communication pipe 17, a cutting ferrule check valve 18, a four-way valve 19, a fourth communication pipe 20, a second pipe joint 21, a pressure gauge 191, and the like;
the right end of the first pipe joint 11 is provided with pipe threads and is in threaded connection with the valve body of the switch valve 3, and the left end of the first pipe joint is connected with the first communication pipe 12 through a clamping sleeve; the left end of the first communication pipe 12 is connected with the right end port of the first cutting ferrule angle type needle valve 13, and the lower end port of the first cutting ferrule angle type needle valve 13 is connected with the second communication pipe 16.
The right end of the second pipe joint 21 is provided with pipe threads and is in threaded connection with the valve body, the left end of the second pipe joint is connected with the fourth communicating pipe 20 through a clamping sleeve, the left end of the fourth communicating pipe 20 is connected with a right end port of the four-way valve 19, the other three ports of the four-way valve 19 are respectively connected with the clamping sleeve type check valve 18, the third communicating pipe 17 and the pressure gauge 191, the lower end of the clamping sleeve type check valve 18 is connected with the second communicating pipe 16, and the clamping sleeve type check valve 18 is communicated in the direction from the four-way valve 19 to the second communicating pipe 16.
One port of the second sleeve angle needle valve 14 is connected with a third communicating pipe 17, and the other port of the second sleeve angle needle valve 14 is connected with a leak detection pipe 15.
As shown in fig. 2, on the valve body of the on-off valve 3, threaded relief holes are provided at positions corresponding to the upstream valve chamber, the valve middle chamber and the downstream valve chamber. The first pipe joint 11 of the middle cavity automatic relief system 1 is connected with a threaded pressure relief hole at an upstream valve cavity, the second pipe joint 21 is connected with a threaded pressure relief hole at the middle cavity of the valve, and the threaded pressure relief hole at the downstream valve cavity is plugged by a plug 2. In use, the on-off valve 3 is opened or closed by a driving force provided by an actuator (not shown).
When the on-off valve 3 is in the closed state, the upstream end and the downstream end of the on-off valve 3 are blocked by the valve core, and the whole valve cavity forms a closed area. If the liquid medium is changed from a liquid state to a gaseous state due to a temperature change or other reasons at this time, the liquid medium accumulated in the cavity in the valve rapidly expands. Therefore, the valve is ensured to run safely by installing the automatic cavity relief system 1 for the cavity of the valve on the switch valve 3 to release the cavity pressure of the valve.
When the valve is used, the second cutting ferrule angle type needle valve 14 is closed, the first cutting ferrule angle type needle valve 13 is opened, and when the pressure of the middle cavity of the valve is higher than the pressure of the pressure relief end, the pressure gauge 191 can be used for observing, and the liquid medium in the middle cavity of the valve can be automatically discharged to the pressure relief end through the cutting ferrule type one-way valve 18. And when the liquid medium at the upstream end of the valve reaches the sleeve-type check valve 18 through the second communicating pipe 16, the sleeve-type check valve 18 cuts off the liquid medium, so that the liquid medium is prevented from reaching the valve middle cavity.
Preferably, when the on-off valve 3 is in the closed state, the first sleeve-angle needle valve 13 may be closed, the second sleeve-angle needle valve 14 may be opened, the leak detection pipe 15 is used for detecting the sealing performance of the on-off valve 3, and if the leak detection pipe 15 detects the existence of the liquid medium, it is indicated that the valve core of the on-off valve 3 has sealing leakage. At the same time, the transported liquid medium can also be sampled via the leak detection pipe 15 for subsequent analysis of the quality of the liquid medium.
Preferably, the first corner-sleeve needle valve 13 is provided with a first operator 131, the first operator 131 being for opening or closing the first corner-sleeve needle valve 13; the second card sleeve angle needle valve 14 is provided with a second operator 141, and the second operator 141 is used for opening or closing the second card sleeve angle needle valve 14; wherein, the first operator 131 and the second operator 141 may be both automatically operated or manually operated.
The invention provides a highly integrated automatic medium cavity relief system with a simple structure, which can realize automatic pressure relief after the medium cavity of a valve is overpressured and observe the overpressure pressure, so that technicians can process the system in time, and the safe operation of the valve is ensured. Meanwhile, the sealing performance of the switch valve can be detected when the valve is in a closed state, and leakage detection and medium sampling are performed through a sampling port of the middle cavity automatic discharging system.
Preferably, the automatic hollow space venting system 1 further comprises a control device for controlling the actuation of the actuator, the first manipulator 131 and the second manipulator 141.
Preferably, the automatic medium-cavity venting system 1 further comprises a first sensor, a second sensor, a third sensor and an interaction device, and the control device is respectively in communication connection with the first sensor, the second sensor, the third sensor and the interaction device; the first sensor is used for detecting the pressure in the four-way valve 19; the second sensor is used for detecting the liquid medium existing in the leak detection pipe 15; the third sensor is used for detecting the liquid medium in the first communication pipe 12; the control device receives detection signals of the first sensor, the second sensor and the third sensor and controls the interaction device to work according to the detection signals.
Preferably, the interactive device is provided with a touch display, and the display is used for displaying the faults or anomalies of the current automatic medium cavity discharging system or the switching valve in a text mode.
Preferably, the interaction device is a terminal device with a remote communication function and can send out an audible and visual alarm signal to prompt a technician that a fault or abnormality exists in the current automatic medium cavity relief system or the switching valve.
According to the preferred embodiment, the automatic medium cavity relief system can automatically detect whether each sealing performance and function of the switch valve are normal or not, and control the interaction device to respond differently according to different detection results, so that a technician can know the working state of the current automatic medium cavity relief system or the switch valve at any time.
Example two
The invention also provides a self-detection method of the automatic medium cavity discharging system, and according to the self-detection method, whether each performance and function of the automatic medium cavity discharging system are normal or not can be detected. The self-detection method comprises the following steps:
step one: the control device controls the actuator to close the switch valve, and simultaneously controls the first manipulator 131 and the second manipulator 141 to act so as to close the first cutting ferrule angle needle valve 13 and open the second cutting ferrule angle needle valve 14; the control device receives the detection signal of the second sensor to judge whether the liquid medium exists in the leakage detection pipe 15, and if the liquid medium does not exist in the leakage detection pipe 15, the second step is continuously executed; otherwise, the interaction device is controlled to be in the first working mode.
Preferably, the first working mode is that the interaction device displays 'self-checking is stopped', the switch valve is not in a normal working state, and checking is requested in time.
When the automatic medium-cavity relief system is used for equipment debugging, the on-off valve is ensured to be in a normal working state. Therefore, in the self-detection step, the first sleeve-angled needle valve 13 is closed first, and the second sleeve-angled needle valve 14 is opened, and the liquid medium flow path in the valve is: the upstream end is pressurized, the liquid medium enters the valve cavity, the four-way valve 19, the second clamping sleeve angle type needle valve 14 and the leakage detection pipe 15, if the liquid medium appears in the leakage detection pipe 15, the valve core is usually not positioned at the correct closing position, so that the switching valve has a functional failure, at the moment, a technician needs to be reminded to check the problem of the switching valve, and the follow-up self-detection step can be continued only after the switching valve is in a normal working state; if no liquid medium exists, the working state of the switching valve is normal, and the subsequent self-detection step can be continued.
Preferably, when the control device controls the interaction device to be in the first working mode, the interaction device also displays a check-out button to prompt a technician whether to perform a check-out operation, and when the technician selects to confirm to perform the check-out operation, the control device closes the second cutting ferrule angle needle valve 14 and controls the actuator to act so as to perform at least one operation of opening and closing the switch valve.
As described above, it is first necessary to confirm whether the on-off valve is in a normal operation state when the self-checking step is started, and if the on-off valve is not in a normal operation state, this is usually that the valve core of the on-off valve is not in a correct closing position, resulting in malfunction of the on-off valve. Therefore, when the liquid medium in the leakage detection pipe is detected, the control device controls the actuator to act so as to perform at least one operation of opening and closing the on-off valve, so that the valve core of the on-off valve is in a normal closing position, and the on-off valve is ensured to be in an effective working state in the subsequent self-detection step. Of course, if the liquid medium in the leak detection pipe is still detected after the switch valve is opened and closed for a plurality of times and the second cutting sleeve angle type needle valve is opened again, the switch valve is indicated to have a sealing failure, and a technician is required to repair the switch valve. At the moment, the control device controls the interaction device to display 'self-checking is terminated, the switching valve is in sealing failure, timely maintenance is required', and meanwhile, the interaction device is controlled to send out an audible and visual alarm signal to remind technicians.
Step two: the control device controls the first operator 131 to act so as to open the first cutting ferrule angle type needle valve 13; the control device receives the detection signal of the second sensor to judge whether the liquid medium exists in the leakage detection pipe 15, and if the liquid medium does not exist in the leakage detection pipe 15, the step three is continuously executed; otherwise, the interaction device is controlled to be in the second working mode.
Preferably, the second working mode is that the interaction device displays the 'cutting sleeve type check valve sealing failure, please deal with in time'.
In the process of performing check valve sealing detection of the automatic cavity relief system, the first cutting ferrule angle type needle valve 13 and the second cutting ferrule angle type needle valve 14 are controlled to be in an open state, and the upstream end of the valve is pressurized at the moment, so that the flow path of liquid medium is as follows: the liquid medium can enter the upstream end, the first cutting ferrule angle type needle valve 13, the four-way valve 19, the second cutting ferrule angle type needle valve 14 and the leakage detection pipe 15, and if the liquid medium exists in the leakage detection pipe 15, the cutting ferrule type check valve 18 is proved to have a problem in sealing; if no liquid medium is present, this indicates that the sealing performance of the cartridge check valve 18 is normal.
Step three: the control device controls the second manipulator 141 to act so as to close the second cutting sleeve angle needle valve 14, then controls the actuator to open the switch valve firstly, and closes the switch valve after the appointed time is continued, so that the cavity in the valve is pressurized; the control device receives the detection signal of the third sensor to determine whether the discharged liquid medium exists in the first communication pipe 12, and controls the interaction device to be in the third working mode or the fourth working mode according to the received signal.
Preferably, when detecting that the discharged liquid medium exists in the first communication pipe, the control device controls the interaction device to be in a third working mode, wherein the third working mode is that the interaction device displays 'equipment self-detection is completed and the function is normal'; when detecting that no discharged liquid medium exists in the first communication pipe, the control device controls the interaction device to be in a fourth working mode, and the fourth working mode is that the interaction device displays a' cutting sleeve type one-way valve function fault, and the trouble is immediately checked.
In the automatic relief function detection process of the automatic relief system of the middle cavity, the first cutting sleeve angle type needle valve 13 is controlled to be in an open state, the second cutting sleeve angle type needle valve 14 is controlled to be in a closed state, and then the switching valve is controlled to be opened first and closed after a period of time, so that the middle cavity of the valve is pressurized. When the valve cavity is overpressurized, the liquid medium flow path is as follows: the valve middle cavity, the four-way valve 19, the clamping sleeve type one-way valve 18, the first clamping sleeve angle type needle valve 13 and the upstream end, if the liquid medium is detected to be discharged to the upstream end, the normal discharging function is indicated; if no discharge of the liquid medium to the upstream end is detected, the cutting sleeve type check valve is indicated to have functional failure.
Preferably, when the control device controls the interaction device to be in the fourth operation mode, the interaction device also displays a check-out button to prompt a technician whether to perform a check-out operation, and when the technician selects to confirm to perform the check-out, the control device controls the solenoid 186 to be energized to drive the check valve core 182 to reciprocate.
In the third step, when the functional failure of the sleeve-type check valve is detected, the valve core of the sleeve-type check valve is not effectively pushed away due to dislocation. In order to effectively solve the above problems, the sleeve-type check valve 18 provided by the invention comprises a check valve body 181, a check valve core 182 arranged in the check valve body 181, and a return spring 184 with one end abutting against the check valve core 182 arranged in the check valve body 181; the check valve spool 182 is provided with a first groove, a sealing ring 183 is arranged in the first groove, the sealing ring 183 is in sealing contact with the check valve body 181, the check valve spool 182 is also provided with a second groove, and an iron core 185 is arranged in the second groove; a solenoid 186 is provided outside the check valve body 181, and the solenoid 186 is used to drive the plunger 185 to reciprocate.
According to the above embodiment, when the cartridge-type check valve has a malfunction, the cartridge-type check valve is in a normal operation state by driving the core 185 to reciprocate, so that the valve core 182 of the check valve is rapidly reciprocated several times in a short time, which effectively solves the problem that the valve core of the cartridge-type check valve is not effectively pushed open.
To achieve the reciprocating movement of the check valve core 182, a control device may be used to control the solenoid 186 to generate a current in one direction (e.g., clockwise), where a magnetic force is applied to the core 185, so that the core 185 moves in one direction and further drives the check valve core 182 to move; subsequently, a current (e.g., counter-clockwise) is generated in the control solenoid 186 to move the plunger 185 in the opposite direction and further to move the check valve plunger 182 in the opposite direction. Thus, when the direction of current flow in the continuous control solenoid 186 is changed, the reciprocating motion of the check valve spool 182 in the axial direction can be achieved. Of course, the on-off of the current in the solenoid 186 can be continuously controlled, and the reciprocating motion of the check valve core 182 along the axial direction can be realized by matching with the reset force of the reset spring 184.
According to the self-detection method provided by the invention, whether the sealing performance and the function of the automatic medium cavity discharging system are normal can be simply and effectively detected, so that a technician can ensure that the switch valve can safely and effectively operate when debugging equipment.
The above embodiments are only for illustrating the present invention and not for limiting the technical solutions described in the present invention, and although the present invention has been described in detail in the present specification with reference to the above embodiments, the present invention is not limited to the above specific embodiments, and thus any modifications or equivalent substitutions are made to the present invention; all technical solutions and modifications thereof that do not depart from the spirit and scope of the invention are intended to be included in the scope of the appended claims.
Claims (5)
1. The self-detection method of the automatic medium cavity discharging system comprises a first pipe joint, a first communication pipe, a first clamping sleeve angle type needle valve, a second clamping sleeve angle type needle valve, a leakage detection pipe, a second communication pipe, a third communication pipe, a clamping sleeve type check valve, a four-way valve, a fourth communication pipe, a second pipe joint and a pressure gauge;
the right end of the first pipe joint is provided with pipe threads and is in threaded connection with a valve body of a valve, and the left end of the first pipe joint is connected with the first communication pipe through a clamping sleeve; the left end of the first communicating pipe is connected with the right end port of the first cutting ferrule angle type needle valve, and the lower end port of the first cutting ferrule angle type needle valve is connected with the second communicating pipe;
the right end of the second pipe joint is provided with pipe threads and is in threaded connection with the valve body, the left end of the second pipe joint is connected with the fourth communicating pipe through a clamping sleeve, the left end of the fourth communicating pipe is connected with a right end port of the four-way valve, the other three ports of the four-way valve are respectively connected with the clamping sleeve type one-way valve, the third communicating pipe and the pressure gauge, the lower end of the clamping sleeve type one-way valve is connected with the second communicating pipe, and the clamping sleeve type one-way valve is communicated in the direction from the four-way valve to the second communicating pipe;
one port of the second cutting ferrule angle type needle valve is connected with the third communicating pipe, and the other port of the second cutting ferrule angle type needle valve is connected with the leakage detecting pipe;
the first cutting sleeve angle type needle valve is provided with a first operator, and the first operator is used for opening or closing the first cutting sleeve angle type needle valve; the second cutting sleeve angle type needle valve is provided with a second operator, and the second operator is used for opening or closing the second cutting sleeve angle type needle valve; wherein the first and second operators are both operable automatically or manually;
the automatic medium cavity discharging system is further provided with a control device, wherein the control device is used for controlling an actuator, the first operator and the second operator to act, and the actuator is used for opening or closing the valve;
the automatic medium cavity discharging system is further provided with a first sensor, a second sensor, a third sensor and an interaction device, and the control device is respectively in communication connection with the first sensor, the second sensor, the third sensor and the interaction device; the first sensor is used for detecting the pressure in the four-way valve; the second sensor is used for detecting the liquid medium existing in the leakage detection pipe; the third sensor is used for detecting the liquid medium in the first communication pipe; the control device receives detection signals of the first sensor, the second sensor and the third sensor and controls the interaction device to work according to the detection signals;
the method is characterized by comprising the following steps of:
step one: the control device controls the actuator to close the valve and simultaneously controls the first operator and the second operator to act so as to close the first cutting ferrule angle type needle valve and open the second cutting ferrule angle type needle valve; the control device receives the detection signal of the second sensor to judge whether the liquid medium exists in the leakage detection pipe, and if the liquid medium does not exist in the leakage detection pipe, the second step is continuously executed; otherwise, controlling the interaction device to be in a first working mode;
step two: the control device controls the first manipulator to act so as to open the first cutting sleeve angle type needle valve; the control device receives the detection signal of the second sensor to judge whether the liquid medium exists in the leakage detection pipe, and if the liquid medium does not exist in the leakage detection pipe, the step three is continuously executed; otherwise, controlling the interaction device to be in a second working mode;
step three: the control device controls the second manipulator to act so as to close the second cutting sleeve angle type needle valve, then controls the actuator to open the valve firstly, and closes the valve after lasting for a designated time, so that the cavity in the valve is pressurized; the control device receives the detection signal of the third sensor to judge whether the discharged liquid medium exists in the first communication pipe, and controls the interaction device to be in a third working mode or a fourth working mode according to the received signal;
the first working mode is that the interaction device displays ' self-checking is stopped ', the valve is not in a normal working state, and timely checking is required ';
the second working mode is that the interaction device displays a 'cutting sleeve type check valve sealing failure, please process in time';
when detecting that the discharged liquid medium exists in the first communication pipe, the control device controls the interaction device to be in the third working mode, wherein the third working mode is that the interaction device displays 'equipment self-detection is completed and the function is normal';
when detecting that no discharged liquid medium exists in the first communication pipe, the control device controls the interaction device to be in the fourth working mode, and the fourth working mode displays a 'cutting sleeve type one-way valve function fault' for the interaction device, and the trouble is timely checked.
2. The self-test method of claim 1, wherein: the first pipe joint is connected with the upstream end of the valve, and the second pipe joint is connected with the valve middle cavity of the valve.
3. The self-test method of claim 2, wherein: the clamping sleeve type one-way valve comprises a one-way valve body, a one-way valve core arranged in the one-way valve body, and a return spring with one end propped against the one-way valve core is arranged in the one-way valve body; the valve core of the one-way valve is provided with a first groove, a sealing ring is arranged in the first groove, the valve core of the one-way valve is also provided with a second groove, and an iron core is arranged in the second groove; and a solenoid is arranged outside the check valve body and used for driving the iron core to reciprocate.
4. The self-test method of claim 3, wherein:
when the control device controls the interaction device to be in the first working mode, the interaction device also displays a check-out button to prompt a technician whether to perform check-out operation, and when the technician selects check-out, the control device closes the second cutting sleeve angle needle valve and controls the actuator to act so as to execute at least one operation of opening and closing the valve.
5. The self-test method as claimed in claim 4, wherein:
when the control device controls the interaction device to be in the fourth working mode, the interaction device also displays a check-out confirming button to prompt a technician whether to conduct check-out operation, and when the technician selects to confirm to conduct check-out, the control device controls the solenoid to be electrified so as to drive the check valve core to reciprocate.
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Address after: No. 67, Section 1, Xueshan Avenue, Dayi County, Chengdu City, Sichuan Province, 611330 Patentee after: Chengdu Chenggao Valve Co.,Ltd. Patentee after: CHENGDU CHENGFENG VALVE Co.,Ltd. Patentee after: Chengfeng FLOW-TECH Group Address before: 611330 No. 67, Gongye Avenue, Dayi County, Chengdu, Sichuan Patentee before: CHENGDU CHENG GAO VALVE Co.,Ltd. Patentee before: CHENGDU CHENGFENG VALVE Co.,Ltd. Patentee before: Chengfeng FLOW-TECH Group |
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