CN111365615B - Valve static pressure life automatic testing device based on gasification pressurization - Google Patents
Valve static pressure life automatic testing device based on gasification pressurization Download PDFInfo
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- CN111365615B CN111365615B CN202010202144.0A CN202010202144A CN111365615B CN 111365615 B CN111365615 B CN 111365615B CN 202010202144 A CN202010202144 A CN 202010202144A CN 111365615 B CN111365615 B CN 111365615B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
- F17D1/065—Arrangements for producing propulsion of gases or vapours
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B3/00—Intensifiers or fluid-pressure converters, e.g. pressure exchangers; Conveying pressure from one fluid system to another, without contact between the fluids
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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
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0025—Electrical or magnetic means
- F16K37/0041—Electrical or magnetic means for measuring valve parameters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
- F17D1/082—Pipe-line systems for liquids or viscous products for cold fluids, e.g. liquefied gas
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/003—Machine valves
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Abstract
The invention relates to the technical field of valve static pressure life test, in particular to a valve static pressure life automatic test device based on gasification pressurization, which is applicable to control valves such as ball valves, gate valves, butterfly valves, stop valves and the like, and comprises a control system, an air source pressurization system, a loading system and a driving system, wherein the air source pressurization system is used for providing high-pressure gas so as to simulate the opening and closing of a tested valve under different medium pressure working conditions, a detection component monitors the running position, upstream and downstream pressure information and the like of the tested valve in real time, the opening and closing cycle state, the sealing performance and the like of the tested valve can be evaluated, the test accuracy is improved, the loading system controls the loading and unloading of the high-pressure gas of the tested valve, so that the static pressure life test of the valve can be automatically completed according to the technical requirements of the control valve static pressure life test standards, and the consumption of the high-pressure gas in the test process can be reduced, has the advantages of green and low cost.
Description
Technical Field
The invention relates to the technical field of valve static pressure life test, in particular to a valve static pressure life automatic test device based on gasification pressurization, which is suitable for control valves such as ball valves, gate valves, butterfly valves, stop valves and the like.
Background
Control valves, represented by ball valves, gate valves, butterfly valves, and globe valves, are common control elements in the process industry. China is a large country in process industry, and with the construction of large-scale domestic projects such as large-scale coal chemical industry, super-large-capacity generator sets, new energy engineering and the like, the importance of the static pressure service life parameter of the valve is increasingly prominent, and the static pressure service life parameter becomes an important evaluation index related to the operational reliability, the economy and the safety of the whole production line using the control valve. The development of a static pressure life test of the valve has become a hard requirement of various domestic valve manufacturers. In order to standardize the static pressure life test of the valve and improve the reliability of the test, the national proposes the industrial standards such as JB/T8858 and 2017 gate valve static pressure life test regulations, JB/T8859 and 2017 stop valve static pressure life test regulations, JB/T8861 and 2017 ball valve static pressure life test regulations, JB/T8863 and 2017 butterfly valve static pressure life test regulations and the like, and guides the test operation. The existing static pressure testing device for the valve is designed by referring to the industrial standards, is complex to operate, low in automation degree and high in energy consumption, so that the static pressure life test of the valve has the defects of high cost, high personnel occupancy rate, poor economy and the like, and becomes a limiting factor for valve enterprises to carry out the static pressure life test.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in order to solve the problems of complex operation, low automation degree and high energy consumption of a valve static pressure testing device in the prior art, the device for automatically testing the static pressure service life of the valve based on gasification pressurization is provided, the integration level and the automation degree of the device are high, the testing efficiency of the valve static pressure service life test is improved, the testing cost and the energy consumption are reduced, and the device is widely applicable to control valves such as ball valves, gate valves, butterfly valves, stop valves and the like and is wide in application range; the valve static pressure life test refers to a test of the number of opening and closing cycles from full opening to full closing of a valve with standard required performance under the action of medium pressure under a laboratory condition.
The technical scheme adopted by the invention for solving the technical problems is as follows: an automatic testing device for static pressure service life of a valve based on gasification pressurization comprises:
the control system is provided with a controller and a detection assembly, wherein the detection assembly comprises an inlet end pressure sensor, an outlet end pressure sensor and a travel switch which are respectively in signal connection with the controller;
the gas source pressurization system is used for outputting high-pressure gas after gasifying and pressurizing the liquid gas;
the loading system is provided with an inlet end switch valve, an outlet end switch valve and a pressure reducing valve, the inlet end switch valve, the outlet end switch valve and the pressure reducing valve are respectively in signal connection with the controller, and the pressure reducing valve is configured in the air source pressurization system and used for controlling the pressure of high-pressure air output by the air source pressurization system;
the driving system is in signal connection with the controller and is used for driving the valve core of the valve to be tested to move between the opening position and the closing position;
the inlet end of the first pipeline is communicated with the output end of the air source pressurization system, the outlet end of the first pipeline is communicated with the inlet of the tested valve, and the inlet end switch valve and the inlet end pressure sensor are sequentially arranged on the first pipeline along the flow direction of high-pressure air in the first pipeline;
and the inlet end of the second pipeline is communicated with the outlet of the tested valve, and the outlet end switch valve and the outlet end pressure sensor are sequentially arranged on the second pipeline along the flow direction of high-pressure gas in the second pipeline.
In the scheme, the air source pressurization system is used for providing high-pressure air so as to simulate the opening and closing of the valve to be detected under different medium pressure working conditions, the detection assembly monitors the running position, upstream and downstream pressure information and the like of the valve to be detected in real time, and through data analysis of the detection assembly, the on-off cycle state, the sealing performance and the like of the tested valve can be evaluated, the testing accuracy is improved, the loading system controls the loading and unloading of the high-pressure gas of the tested valve, thereby realizing the automatic completion of the static pressure life test of the valve according to the technical requirements of the static pressure life test standard of the control valve, and can reduce the consumption of high-pressure gas in the testing process, has the advantages of green and low cost, and besides the installation and the moment detection of the tested valve, other tests and detections can be automatically completed by the device, so that the labor cost is saved, and the device has important practical application value.
Further, the air supply supercharging system comprises a liquid tank, a liquid nitrogen pump, a gasifier, a high-pressure gas storage tank and a buffer tank, wherein liquid gas is stored in the liquid tank, the liquid tank is communicated with the liquid nitrogen pump through a pipeline, the liquid nitrogen pump is communicated with the gasifier through a pipeline, the gasifier is communicated with the high-pressure gas storage tank through a pipeline, the high-pressure gas storage tank is communicated with the buffer tank through a pipeline, a pressure reducing valve is arranged on the pipeline between the high-pressure gas storage tank and the buffer tank, and the buffer tank is communicated with the inlet end of the first pipeline.
Further, the liquid gas is liquid nitrogen, liquid oxygen or liquid argon.
Further, the loading system further comprises a proportional valve, the proportional valve is arranged on the first pipeline and is positioned between the inlet end of the first pipeline and the inlet end switch valve, and the proportional valve is in signal connection with the controller.
Further, the proportional valve is a pneumatic or electric driven proportional valve.
Further, the loading system still includes leading ooff valve, control system's detection element still includes leading pressure sensor, leading pressure sensor and leading ooff valve set gradually on first pipeline along the gaseous flow direction of high pressure in the first pipeline, and leading pressure sensor and leading ooff valve are located between the entrance point and the proportional valve of first pipeline, leading pressure sensor and leading ooff valve respectively with controller signal connection.
Furthermore, the driving system comprises an actuating mechanism, the actuating mechanism is in transmission connection with a valve core of the valve to be detected, the travel switch is arranged on the actuating mechanism and used for monitoring the operation position of the valve core of the valve to be detected, and the actuating mechanism and the travel switch are respectively in signal connection with the controller.
Furthermore, the actuating mechanism is an electrically driven actuating mechanism, and the controller drives the electrically driven actuating mechanism through the driving module;
or the executing mechanism is a pneumatic driving executing mechanism, the pneumatic executing mechanism is communicated with a normal pressure switch valve through a pipeline, the normal pressure switch valve is communicated with a pneumatic triple piece through a pipeline, the pneumatic triple piece is communicated with an air source through a pipeline, and the controller is in signal connection with the normal pressure switch valve;
or the executing mechanism is a hydraulically-driven executing mechanism, the hydraulic executing mechanism is communicated with a normal-pressure switch valve through a pipeline, the normal-pressure switch valve is communicated with a hydraulic source through a pipeline, and the controller is in signal connection with the normal-pressure switch valve.
Further, the actuating mechanism is an angular stroke actuating mechanism or a straight stroke actuating mechanism.
Furthermore, the controller is in signal connection with an upper computer, the upper computer is an industrial control computer, a tablet personal computer or an embedded host, and the controller is a PLC, an embedded control panel or a data acquisition card.
The invention has the beneficial effects that: the method comprises the following specific steps:
the invention completely meets the technical requirements of the existing control valve static pressure life test standard, and the test result can more accurately reflect the static pressure life of the valve;
aiming at different valves, the forced leakage detection times, loading, pressure maintaining and pressure releasing action intervals, an actuating mechanism action sequence and the like can be controlled by setting test parameters, so that the consumption of high-pressure gas in the test process can be reduced, and the valve has the advantages of environmental friendliness and low cost;
the invention has high automation degree, other tests and detections can be automatically completed by the device except the installation of the valve to be detected and the torque detection, thereby saving the labor cost, having high testing efficiency and having important practical application value.
The high-pressure gas is provided by the gas source pressurization system, so that the opening and closing of the valve to be tested under different medium pressure working conditions are simulated, the testing cost is low, the control is convenient, no pollution is caused, the consumption of the high-pressure gas is only the volume of the inner cavity of the valve to be tested, a pipeline and a pipeline, the testing energy consumption is obviously reduced, and the energy-saving and environment-friendly advantages are realized;
fifthly, the operation position, upstream and downstream pressure information and the like of the tested valve are monitored in real time by utilizing the detection assembly, and the opening and closing cycle state, the sealing performance and the like of the tested valve can be evaluated by combining data analysis of the detection assembly, so that the accuracy of the test is improved, the test result is more reliable, and meanwhile, the fault point encountered in the test process can be found quickly by a worker conveniently, and the use is convenient.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic diagram of an automatic testing device for static pressure life of a valve based on gasification pressurization;
FIG. 2 is a schematic flow chart of the device for automatically testing the static pressure service life of the valve based on gasification pressurization;
fig. 3 is a schematic flow chart of a single start-stop test performed by the automatic testing device for static pressure life of the valve based on gasification pressurization.
In the figure: 1. the device comprises an upper computer, 2, a controller, 3, an inlet end pressure sensor, 4, an outlet end pressure sensor, 5, a travel switch, 6, an inlet end switch valve, 7, an outlet end switch valve, 8, a pressure reducing valve, 9, a first pipeline, 10, a measured valve, 11, a second pipeline, 12, a liquid tank, 13, a liquid nitrogen pump, 14, a gasifier, 15, a high-pressure gas storage tank, 16, a buffer tank, 17, a proportional valve, 18, a front switch valve, 19, a front pressure sensor, 20, an execution mechanism, 21, a normal pressure switch valve, 22, a pneumatic triple piece, 23, a gas source, 24 and a power driving module.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams illustrating the basic structure of the present invention only in a schematic manner, and thus show only the constitution related to the present invention, and directions and references (e.g., upper, lower, left, right, etc.) may be used only to help the description of the features in the drawings. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the claimed subject matter is defined only by the appended claims and equivalents thereof.
Example 1
As shown in fig. 1, an automatic testing device for static pressure life of a valve based on gasification pressurization comprises:
the control system is provided with a controller 2 and a detection assembly, wherein the detection assembly comprises an inlet end pressure sensor 3, an outlet end pressure sensor 4 and a travel switch 5 which are respectively in signal connection with the controller 2;
the gas source pressurization system is used for outputting high-pressure gas after gasifying and pressurizing the liquid gas;
the loading system is provided with an inlet end switch valve 6, an outlet end switch valve 7 and a pressure reducing valve 8, the inlet end switch valve 6, the outlet end switch valve 7 and the pressure reducing valve 8 are respectively in signal connection with the controller 2, and the pressure reducing valve 8 is configured in the air source pressurization system and used for controlling the pressure of high-pressure air output by the air source pressurization system;
the driving system is in signal connection with the controller 2 and is used for driving the valve core of the valve 10 to be tested to move between the opening position and the closing position;
the inlet end of the first pipeline 9 is communicated with the output end of the gas source pressurization system, the outlet end of the first pipeline 9 is used for being communicated with the inlet of the tested valve 10, and the inlet end switching valve 6 and the inlet end pressure sensor 3 are sequentially arranged on the first pipeline 9 along the flow direction of high-pressure gas in the first pipeline 9;
and the inlet end of the second pipeline 11 is communicated with the outlet of the tested valve 10, and the outlet end switch valve 7 and the outlet end pressure sensor 4 are sequentially arranged on the second pipeline 11 along the flow direction of the high-pressure gas in the second pipeline 11.
The gas source pressurization system in the embodiment comprises a liquid tank 12 storing liquid gas, a liquid nitrogen pump 13, a gasifier 14, a high-pressure gas storage tank 15 and a buffer tank 16, wherein the liquid tank 12 is communicated with the liquid nitrogen pump 13 through a pipeline, the liquid nitrogen pump 13 is communicated with the gasifier 14 through a pipeline, the gasifier 14 is communicated with the high-pressure gas storage tank 15 through a pipeline, the high-pressure gas storage tank 15 is communicated with the buffer tank 16 through a pipeline, a pressure reducing valve 8 is arranged on a pipeline between the high-pressure gas storage tank 15 and the buffer tank 16, and the buffer tank 16 is communicated with an inlet end of a first pipeline 9; liquid nitrogen in the liquid tank 12 is conveyed to a gasifier 14 by a liquid nitrogen pump 13, and a large amount of high-pressure nitrogen gas is generated after the liquid nitrogen is gasified and is stored in a high-pressure gas storage tank 15, and is stored in a buffer tank 16 through pressure reduction of a pressure reducing valve 8; for safety management, the gas source 23 system based on the liquid nitrogen gasification pressurization principle is more independently packaged, and is remotely connected with the inlet end of the first pipeline 9 through a gas path.
The liquid gas may be liquid nitrogen, liquid oxygen or liquid argon, depending on experimental requirements.
The loading system in the embodiment further comprises a proportional valve 17, wherein the proportional valve 17 is arranged on the first pipeline 9 and is positioned between the inlet end of the first pipeline 9 and the inlet end switch valve 6, and the proportional valve 17 is in signal connection with the controller 2; therefore, the proportional valve 17 can be matched with the pressure reducing valve 8 to control the pressure of the loaded high-pressure gas, and the high-pressure reducing valve 8 is used for carrying out primary pressure reduction on the gas source pressurization system and controlling the gas pressure in the buffer tank 16; the high-pressure proportional valve 17 is set by the controller 2 according to the set parameters of the testers, constant output air pressure is output, and according to the relevant standards, the medium pressure difference at the inlet end of the tested valve 10 is 1-1.1 times of the maximum allowable working pressure during testing.
The proportional valve 17 is a pneumatic, electric or manual driven proportional valve 17 according to the field requirement.
The loading system in this embodiment further includes a pre-switch valve 18, the detection assembly of the control system further includes a pre-pressure sensor 19, the pre-pressure sensor 19 and the pre-switch valve 18 are sequentially arranged on the first pipeline 9 along the flow direction of the high-pressure gas in the first pipeline 9, the pre-pressure sensor 19 and the pre-switch valve 18 are located between the inlet end of the first pipeline 9 and the proportional valve 17, and the pre-pressure sensor 19 and the pre-switch valve 18 are respectively in signal connection with the controller 2; wherein the pre-switch valve 18 can control whether the high-pressure gas in the buffer tank 16 enters the first pipeline 9, and the pre-pressure sensor 19 can monitor whether the high-pressure gas in the buffer tank 16 input to the first pipeline 9 is normal or not, so as to diagnose the fault.
The driving system in this embodiment includes an actuator 20, the actuator 20 is in transmission connection with a valve core of the valve 10 to be tested, the travel switch 5 is disposed on the actuator 20 and is used for monitoring a valve core operation position of the valve 10 to be tested, and the actuator 20 and the travel switch 5 are respectively in signal connection with the controller 2;
starting from the fully closed sealing position of the valve 10 to be tested, the stroke of the actuator 20 is such that the valve 10 to be tested reaches 100% of its actual opening. Besides gas drive, the driving system can also select hydraulic drive and electric drive, and only the driving moment and the stroke requirement of the tested valve 10 need to be met, which is as follows:
the actuator 20 is an electrically driven actuator 20, and the controller 2 drives the electrically driven actuator 20 through a driving module;
or, the actuating mechanism 20 is a pneumatically driven actuating mechanism 20, the pneumatically driven actuating mechanism 20 is communicated with a normal pressure switch valve 21 through a pipeline, the normal pressure switch valve 21 is communicated with a pneumatic triple piece 22 through a pipeline, the pneumatic triple piece 22 is communicated with an air source 23 through a pipeline, and the controller 2 is in signal connection with the normal pressure switch valve 21;
or, the actuator 20 is a hydraulically driven actuator 20, the hydraulic actuator 20 is communicated with a normal pressure switch valve 21 through a pipeline, the normal pressure switch valve 21 is communicated with a hydraulic source through a pipeline, and the controller 2 is in signal connection with the normal pressure switch valve 21.
Secondly, the actuator 20 should match the valve 10 under test, and the actuator 20 may be an angular stroke actuator 20 or a straight stroke actuator 20 depending on the actual situation.
In the embodiment, a controller 2 is in signal connection with an upper computer 1, the upper computer 1 is an industrial control computer, a tablet personal computer or an embedded host, and the controller 2 is a PLC, an embedded control panel or a data acquisition card; the upper computer 1 can communicate with the controller 2 in real time, exchange data and instruction information, and realize the functions of acquisition, processing, monitoring, analysis, visualization and storage of test data, management, loading and control of test equipment and data files, sensor calibration and the like; in the whole test process, a tester sets test contents and set parameters in the upper computer 1, the upper computer 1 directly controls the test contents and the set parameters through the controller 2, and the control system can also realize the state monitoring and fault diagnosis of the test device according to the state data of each pressure sensor and the travel switch 5.
In this embodiment, the pre-switch valve 18, the inlet switch valve 6, the outlet switch valve 7, the normal pressure switch valve 21, and the pressure reducing valve 8 may be connected to the controller 2 through respective power driving modules 24.
In this embodiment, if a plant gas source is used as a medium of a valve, a gas compressor needs to be additionally configured to increase the pressure of the plant gas source (less than 0.7MPa) to a test pressure (generally, full pressure difference is specified according to the pressure grade of the valve), and if the compressor is used, the pressurization time depends on the power of the compressor, the high-pressure response is slow, and the pressure stabilization cost is high; therefore, the air source pressurization system has the advantages of high response speed and low cost.
In this embodiment, when the pre-switch valve 18, the inlet switch valve 6, the outlet switch valve 7 and the measured valve 10 are all opened, the high-pressure gas provided by the buffer tank 16 in the gas source pressurization system flows through the pre-pressure sensor 19, the pre-switch valve 18, the proportional valve 17, the inlet switch valve 6, the inlet pressure sensor 3, the measured valve 10, the outlet pressure sensor 4 and the outlet switch valve 7 from the first pipeline 9 in sequence.
As shown in fig. 2, the specific test process of the valve static pressure life automatic test device based on gasification pressurization of the present invention is as follows:
1. installing the valve 10 to be tested according to the standard requirement, wherein the loading direction of a medium (high-pressure gas) is consistent with the flow direction of the valve 10 to be tested; and hoisting the assembled actuating mechanism 20 to the installation station of the tested valve 10 by using hoisting equipment, and accurately and reliably connecting the actuating mechanism 20 with the tested valve 10, the gas circuit of the actuating mechanism 20 and the tested valve 10 with the first pipeline 9 and the second pipeline 11.
2. Starting the device, and carrying out state detection on hardware equipment such as an air source pressurization system, a front pressure sensor 19, an inlet end pressure sensor 3, an outlet end pressure sensor 4, a controller 2 and the like; if the device has errors, the device enters a locking state and prompts error information; after the error is eliminated, the device is unlocked.
3. Starting a test program, completing parameter settings such as calibration of a front pressure sensor 19, calibration of an inlet end pressure sensor 3, calibration of an outlet end pressure sensor 4, permission protocol configuration, data acquisition configuration, display setting, forced leakage detection times, loading, pressure maintaining and pressure releasing action intervals, action of an actuating mechanism 20 and the like as required, and filling basic information and tester information of the tested valve 10; the standard of the control valve static pressure life test does not require the opening and closing and loading time of the valve 10 to be tested, and related parameters need to be reasonably set by a tester according to the performance of the valve 10 to be tested and the actuator 20, and in addition, before the loading starts, the inlet end switch valve 6 and the outlet end switch valve 7 are ensured to be in a closed state, the valve 10 to be tested is in a fully closed position, and the air pressure at the outlet end of the valve 10 to be tested is the ambient pressure.
4. Opening a front-mounted switch valve 18, setting a medium (high-pressure gas) pressure value at the inlet end of the tested valve 10 by using an upper computer 1, and setting the medium pressure difference at the inlet end of the tested valve 10 to be 1-1.1 times of the maximum allowable working pressure according to standard requirements; the proportional valve 17 has the capability of automatically adjusting air pressure, the air pressure at the outlet of the proportional valve 17 can be limited to be a set value according to the instruction of the upper computer 1, and the pressure of the medium at the inlet end of the tested valve 10 is kept constant in the testing process.
5. A single opening and closing test is performed, as shown in fig. 3, specifically as follows:
1) firstly, reading the value of a front pressure sensor 19, if the air pressure of high-pressure gas is too high or too low, setting abnormal information of an air source 23 and finishing the test;
2) secondly, opening an inlet end switch valve 6 to load a medium, detecting the pressure difference at two sides of a tested valve 10 by using an inlet end pressure sensor 3 and an outlet end pressure sensor 4, and maintaining the pressure if the air pressure meets the test requirement; otherwise, setting loading abnormal information and ending the test;
3) then, opening the normal pressure switch valve 21 to supply air to the executing mechanism 20, driving the tested valve 10 to be opened from a full-closed position, carrying out full-open in-place detection on the tested valve 10 through the travel switch 5, and if the detected valve is abnormal, setting abnormal opening information and finishing the test;
4) then, after a specified time, closing the inlet end switch valve 6, then closing the normal pressure switch valve 21, resetting the actuating mechanism 20 to bring the tested valve 10 from full opening to closing, detecting the tested valve 10 in place through the travel switch 5, and if the tested valve 10 is abnormal, setting abnormal closing information and ending the test;
5) and finally, opening the outlet end switch valve 7 to release pressure, and closing the outlet end switch valve 7 when the detection pressure of the outlet end pressure sensor 4 is the same as the environmental pressure to finish the single opening and closing test.
6. Carrying out anomaly detection after each start-stop test is finished, and stopping the test and outputting a test result if the start-stop test is abnormal; otherwise, continuing to start a new single start-stop test; according to the standard requirement of the valve static pressure life test, after the opening and closing cycle times of the tested valve 10 reach the appointed forced leakage detection times according to the type of the tested valve 10, the tested valve 10 needs to be subjected to sealing performance test and operation torque check, and if the opening and closing cycle times are qualified, the opening and closing cycle test is continued; otherwise, terminating the test and outputting the test result. Setting m to represent the times of carrying out forced sealing detection, setting n to represent the opening and closing cycle times of the valve in each forced sealing detection interval, wherein the total opening and closing times of the valve 10 to be detected is m + the forced leakage detection times + n;
wherein, forced leakage detection: the valve is required to be taken down from the testing device no matter whether the valve has leakage after being opened and closed for fixed times for the tested valve according to the test standard, the sealing performance is tested by pressing, and the static pressure service life test can be continued after the sealing test is qualified.
Wherein, the forced sealing detection: in the next valve opening and closing fixed time interval after passing the sealing test, after the valve has obvious leakage phenomena (air leakage, noise and the like), the valve is opened and closed in the current interval for the time (parameter n), and the value is reset at the beginning of each interval.
In light of the foregoing description of the preferred embodiment of the present invention, it is to be understood that numerous changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (8)
1. The utility model provides a valve static pressure life automatic testing arrangement based on gasification pressure boost which characterized in that: the method comprises the following steps:
the control system is provided with a controller (2) and a detection assembly, wherein the detection assembly comprises an inlet end pressure sensor (3), an outlet end pressure sensor (4) and a travel switch (5) which are respectively in signal connection with the controller (2);
the gas source pressurization system is used for outputting high-pressure gas after gasifying and pressurizing the liquid gas;
the loading system is provided with an inlet end switch valve (6), an outlet end switch valve (7) and a pressure reducing valve (8), the inlet end switch valve (6), the outlet end switch valve (7) and the pressure reducing valve (8) are respectively in signal connection with the controller (2), and the pressure reducing valve (8) is configured in the air source pressurization system and used for controlling the pressure of high-pressure air output by the air source pressurization system;
the driving system is in signal connection with the controller (2) and is used for driving the valve core of the valve (10) to be tested to move between the opening position and the closing position;
the inlet end of the first pipeline (9) is communicated with the output end of the air source pressurization system, the outlet end of the first pipeline (9) is communicated with the inlet of the valve (10) to be tested, and the inlet end switch valve (6) and the inlet end pressure sensor (3) are sequentially arranged on the first pipeline (9) along the flow direction of high-pressure air in the first pipeline (9);
the inlet end of the second pipeline (11) is communicated with the outlet of the valve (10) to be tested, and the outlet end switch valve (7) and the outlet end pressure sensor (4) are sequentially arranged on the second pipeline (11) along the flow direction of high-pressure gas in the second pipeline (11);
the gas source pressurization system comprises a liquid tank (12) storing liquid gas, a liquid nitrogen pump (13), a gasifier (14), a high-pressure gas storage tank (15) and a buffer tank (16), wherein the liquid tank (12) is communicated with the liquid nitrogen pump (13) through a pipeline, the liquid nitrogen pump (13) is communicated with the gasifier (14) through a pipeline, the gasifier (14) is communicated with the high-pressure gas storage tank (15) through a pipeline, the high-pressure gas storage tank (15) is communicated with the buffer tank (16) through a pipeline, a pressure reducing valve (8) is arranged on the pipeline between the high-pressure gas storage tank (15) and the buffer tank (16), and the buffer tank (16) is communicated with an inlet end of a first pipeline (9);
the loading system further comprises a proportional valve (17), the proportional valve (17) is arranged on the first pipeline (9) and is positioned between the inlet end of the first pipeline (9) and the inlet end switch valve (6), and the proportional valve (17) is in signal connection with the controller (2).
2. The automatic testing device for the static pressure life of the valve based on gasification pressurization as claimed in claim 1, wherein: the liquid gas is liquid nitrogen, liquid oxygen or liquid argon.
3. The automatic testing device for the static pressure life of the valve based on gasification pressurization as claimed in claim 1, wherein: the proportional valve (17) is a pneumatic or electric driven proportional valve (17).
4. The automatic testing device for the static pressure life of the valve based on gasification pressurization as claimed in claim 1, wherein: the loading system further comprises a front-mounted switch valve (18), the detection assembly of the control system further comprises a front-mounted pressure sensor (19), the front-mounted pressure sensor (19) and the front-mounted switch valve (18) are sequentially arranged on the first pipeline (9) along the flowing direction of high-pressure gas in the first pipeline (9), the front-mounted pressure sensor (19) and the front-mounted switch valve (18) are located between the inlet end of the first pipeline (9) and the proportional valve (17), and the front-mounted pressure sensor (19) and the front-mounted switch valve (18) are respectively in signal connection with the controller (2).
5. The automatic testing device for the static pressure life of the valve based on gasification pressurization as claimed in claim 1, wherein: the driving system comprises an executing mechanism (20), the executing mechanism (20) is in transmission connection with a valve core of the valve (10) to be tested, the travel switch (5) is arranged on the executing mechanism (20) and used for monitoring the operation position of the valve core of the valve (10) to be tested, and the executing mechanism (20) and the travel switch (5) are respectively in signal connection with the controller (2).
6. The automatic testing device for the static pressure life of the valve based on gasification pressurization as claimed in claim 5, wherein: the actuator (20) is an electrically driven actuator (20), and the controller (2) drives the electrically driven actuator (20) through a driving module;
or the actuating mechanism (20) is a pneumatically driven actuating mechanism (20), the pneumatic actuating mechanism (20) is communicated with a normal pressure switch valve (21) through a pipeline, the normal pressure switch valve (21) is communicated with a pneumatic triple piece (22) through a pipeline, the pneumatic triple piece (22) is communicated with an air source (23) through a pipeline, and the controller (2) is in signal connection with the normal pressure switch valve (21);
or the actuating mechanism (20) is a hydraulically driven actuating mechanism (20), the hydraulic actuating mechanism (20) is communicated with a normal pressure switch valve (21) through a pipeline, the normal pressure switch valve (21) is communicated with a hydraulic source through a pipeline, and the controller (2) is in signal connection with the normal pressure switch valve (21).
7. The automatic testing device for the static pressure life of the valve based on gasification pressurization as claimed in claim 5, wherein: the actuating mechanism (20) is an angular stroke actuating mechanism (20) or a straight stroke actuating mechanism (20).
8. The automatic testing device for the static pressure life of the valve based on gasification pressurization as claimed in claim 6, wherein: the controller (2) is connected with an upper computer (1) through signals, the upper computer (1) is an industrial control computer, a tablet personal computer or an embedded host, and the controller (2) is a PLC, an embedded control panel or a data acquisition card.
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| CN112197056B (en) * | 2020-10-19 | 2021-07-20 | 台州科创科技信息咨询有限公司 | Mechanical ball valve service life detector |
| CN114517890B (en) * | 2022-01-27 | 2024-02-09 | 厦门大学 | Adaptive valve system based on specific gas response and manufacturing method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102661861A (en) * | 2012-05-20 | 2012-09-12 | 常德翔宇设备制造有限公司 | Static pressure service life testing system for valves |
| KR20140078115A (en) * | 2012-12-17 | 2014-06-25 | 주식회사 포스코 | Portable test apparatus of pressure safety valve |
| CN205919954U (en) * | 2016-08-24 | 2017-02-01 | 吴忠仪表有限责任公司 | Control valve high -pressure gas pressure and flow analogue test device |
| CN106840645A (en) * | 2017-04-11 | 2017-06-13 | 兰州理工大学温州泵阀工程研究院 | A kind of valve static pressure service life experiment system |
| CN107246961A (en) * | 2017-07-25 | 2017-10-13 | 江苏星河阀门有限公司 | A kind of testing stand for being used to test the stop valve static pressure life-span |
| CN206804293U (en) * | 2017-06-02 | 2017-12-26 | 北京南铁技术有限公司 | Magnetic valve Reliability of Microprocessor and apparatus for testing service life of refrigerator |
| CN108760279A (en) * | 2018-08-03 | 2018-11-06 | 超达阀门集团股份有限公司 | A kind of harsh operating mode valve tester that can monitor valve torque and sealing |
| CN110553834A (en) * | 2019-09-09 | 2019-12-10 | 广州兰石技术开发有限公司 | Accelerated life test system for refrigeration valve |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4694693A (en) * | 1985-05-15 | 1987-09-22 | Westinghouse Electric Corp. | Check valve test method using truncated accumulator blowdown |
| CN203909638U (en) * | 2014-04-15 | 2014-10-29 | 北京国彬信诚科技有限公司 | Automatic gas booster |
| CN106595992A (en) * | 2016-10-28 | 2017-04-26 | 中国联合工程公司 | High-temperature high-pressure gas service life test and airtightness test system of valve and test method thereof |
| CN209386010U (en) * | 2018-12-13 | 2019-09-13 | 南宫市朝阳气体灌充设备有限公司 | L-CNG charging device |
-
2020
- 2020-03-20 CN CN202010202144.0A patent/CN111365615B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102661861A (en) * | 2012-05-20 | 2012-09-12 | 常德翔宇设备制造有限公司 | Static pressure service life testing system for valves |
| KR20140078115A (en) * | 2012-12-17 | 2014-06-25 | 주식회사 포스코 | Portable test apparatus of pressure safety valve |
| CN205919954U (en) * | 2016-08-24 | 2017-02-01 | 吴忠仪表有限责任公司 | Control valve high -pressure gas pressure and flow analogue test device |
| CN106840645A (en) * | 2017-04-11 | 2017-06-13 | 兰州理工大学温州泵阀工程研究院 | A kind of valve static pressure service life experiment system |
| CN206804293U (en) * | 2017-06-02 | 2017-12-26 | 北京南铁技术有限公司 | Magnetic valve Reliability of Microprocessor and apparatus for testing service life of refrigerator |
| CN107246961A (en) * | 2017-07-25 | 2017-10-13 | 江苏星河阀门有限公司 | A kind of testing stand for being used to test the stop valve static pressure life-span |
| CN108760279A (en) * | 2018-08-03 | 2018-11-06 | 超达阀门集团股份有限公司 | A kind of harsh operating mode valve tester that can monitor valve torque and sealing |
| CN110553834A (en) * | 2019-09-09 | 2019-12-10 | 广州兰石技术开发有限公司 | Accelerated life test system for refrigeration valve |
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