CN116298834A - SF6 and mixed gas density relay performance test platform and method thereof - Google Patents
SF6 and mixed gas density relay performance test platform and method thereof Download PDFInfo
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- CN116298834A CN116298834A CN202211466933.0A CN202211466933A CN116298834A CN 116298834 A CN116298834 A CN 116298834A CN 202211466933 A CN202211466933 A CN 202211466933A CN 116298834 A CN116298834 A CN 116298834A
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- 238000011056 performance test Methods 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims description 11
- 238000012360 testing method Methods 0.000 claims abstract description 135
- 238000012806 monitoring device Methods 0.000 claims abstract description 58
- 238000012544 monitoring process Methods 0.000 claims abstract description 28
- 238000012545 processing Methods 0.000 claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims description 20
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- 230000001502 supplementing effect Effects 0.000 claims description 16
- 238000004891 communication Methods 0.000 claims description 9
- 230000001276 controlling effect Effects 0.000 claims description 7
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- 238000009434 installation Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims 7
- 238000001514 detection method Methods 0.000 abstract description 9
- 239000007789 gas Substances 0.000 description 113
- 239000000047 product Substances 0.000 description 6
- 238000009423 ventilation Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
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- 238000011160 research Methods 0.000 description 3
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- 229910052799 carbon Inorganic materials 0.000 description 1
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- 238000004134 energy conservation Methods 0.000 description 1
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
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Abstract
The invention relates to the technical field of instrument and meter detection, in particular to an SF6 and mixed gas density relay performance test platform, which comprises the following components: the high-low temperature and humidity alternating test box is arranged in the body and is used for testing SF6 and a mixed gas density relay thereof; the integrated monitoring test device is arranged inside the body and connected with the high-low temperature and humidity alternating test box through a connecting pipeline, so that the integrated monitoring test device is used for monitoring test data of SF6 and a mixed gas density relay thereof in the high-low temperature and humidity alternating test box. Performance tests over the full use temperature range can be performed for a plurality of multi-density relays. A plurality of multi-density relay cameras in the test temperature box are used for observing and sending the test data to the monitoring device for analysis and processing, and the processed test data are uploaded to a user mobile phone, a PC, an intelligent terminal and the like, so that the real-time monitoring and control of a person in a long time are not needed.
Description
Technical Field
The invention relates to the technical field of instrument and meter detection, in particular to a performance test platform and method for SF6 and a mixed gas density relay thereof.
Background
SF6 gas has excellent thermal stability, heat conductivity, strong electronegativity, excellent insulating property and arc extinguishing property, and is widely applied to high-voltage electrical equipment. However, the greenhouse effect of SF6 gas is 23900 times of CO2, and 3200 years of the greenhouse effect can exist in the air, so that the greenhouse effect is one of 6 greenhouse gases which are forbidden to be discharged in the 'Kyoto protocol'. In recent years, research results of domestic and foreign scholars on SF6 mixed gas show that SF6/N2 and SF6/CF4 mixed gas has application prospect, SF6/N2 and SF6/CF4 mixed gas with low SF6 content has good insulating property and certain opening and closing capability, can reduce sensitivity to local electric field distortion, solves the problem of liquefying SF6 gas, and more importantly, can greatly reduce the use amount and emission of SF6 gas, reduce the influence on environmental greenhouse effect, and has important significance for enhancing energy conservation and emission reduction and realizing low-carbon development. The temperature-pressure characteristic curves of SF6/N2 and SF6/CF4 mixed gases with different mixing ratios are indispensable to the development and test of density relay products.
At present, the SF6 density relay test is mainly carried out on a single meter, the efficiency is low, particularly the temperature test and the temperature cycle test are carried out, the temperature stabilization time is long, for example (patent number: CN 201720609301.3) through a verification module comprises an SF6 gas working simulation bin, a standard SF6 density relay and a conventional pressure meter; the top of the SF6 gas working simulation bin is provided with a first vent hole, a second vent hole and a third vent hole, the middle of the front surface of the SF6 gas working simulation bin is provided with an inflation valve, the first vent hole is connected with a standard SF6 density relay through a first ventilation connecting pipeline, the second vent hole is connected with a conventional pressure gauge through a second ventilation connecting pipeline, the third vent hole is connected with a third ventilation connecting pipeline, the free end of the third ventilation connecting pipeline is a verified SF6 density relay connecting end, ball valves are arranged on the first and third ventilation connecting pipelines, the SF6 density relay is effectively verified, but the SF6 density relay can only be verified each time by the device, the efficiency is low, the time is too long, the SF6 gas under the low-temperature environment such as below-24.4 ℃ and the absolute pressure of more than 0.6MPa is partially liquefied, the standard density relay is difficult to effectively compensate the liquefied part, namely the SF6 density relay to be verified accurately when the SF6 density relay is liquefied at low temperature.
In view of the above, it is highly desirable to provide a synchronous detection device for a multi-density relay, which is used for testing the performance of an SF6 density relay, so as to improve the problems that the working efficiency of the performance test of the SF6 density relay is low and the SF6 density relay can be accurately checked during low-temperature liquefaction.
Disclosure of Invention
The invention aims to provide a performance test platform and method for SF6 and a mixed gas density relay thereof, which are used for overcoming the defects and shortcomings in the prior art.
In order to achieve the above purpose, the invention provides a performance test platform for SF6 and a mixed gas density relay thereof, comprising:
the body is provided with first cavity and second cavity.
The high-low temperature and humidity alternating test box is arranged in the second cavity and is used for testing SF6 and the mixed gas density relay thereof.
The integrated monitoring test device is arranged in the first cavity and is connected with the high-low temperature and humidity alternating test box through a connecting pipeline, so that the integrated monitoring test device is used for monitoring test data of the SF6 and the mixed gas density relay in the high-low temperature and humidity alternating test box.
Further, the high-low temperature and humidity alternating test box provided by the invention comprises:
the multi-density relay synchronization device is arranged inside the high-low temperature and humidity alternating test box and is clamped with the inner side wall of the high-low temperature and humidity alternating test box, and the multi-density relay synchronization device is used for installing SF6 and mixed gas density relays thereof to be tested.
The refrigerating device is arranged in the second cavity and connected with the outer wall of the high-low temperature and humidity alternating test box through a pipeline, and the refrigerating device is used for refrigerating the internal temperature of the high-low temperature and humidity alternating test box.
The heating device is arranged in the second cavity and connected with the outer wall of the high-low temperature and humidity alternating test box, and the heating device is used for heating the internal temperature of the high-low temperature and humidity alternating test box.
The gas storage device is arranged in the second cavity and connected with the inner side wall of the second cavity, and is communicated with the multi-density relay synchronization device through a connecting pipeline.
Further, the multi-density relay synchronization device in the invention comprises:
The multi-density relay synchronization device base is arranged inside the high-low temperature and humidity alternating test box and is clamped with the inner side wall of the high-low temperature and humidity alternating test box.
The multi-density relay installation base is arranged on the upper surface of the base of the multi-density relay synchronization device, and a plurality of multi-density relay installation bases are fixedly connected along the circumference of the multi-density relay synchronization device.
The C star connecting pipe is arranged between the multi-density relay mounting seat and the adjacent multi-density relay mounting seat and is used for communicating the adjacent two multi-density relay mounting seats.
The temperature measuring instrument is arranged inside the base of the multi-density relay synchronization device and is used for measuring the temperature of the C star connecting pipe.
The image observation device is arranged on the base of the multi-density relay synchronization device, the image observation device is fixedly connected with the base of the multi-density relay synchronization device, and the image observation device is used for observing the readings of the multi-density relay.
Further, the image observation apparatus according to the present invention includes:
the connecting frame is arranged on the base of the multi-density relay synchronization device and is fixedly connected with the base of the multi-density relay synchronization device.
The telescopic support column is arranged on the connecting frame and fixedly connected with the connecting frame.
The image observation bin is arranged at the top of the telescopic support column and fixedly connected with the telescopic support column, an observation opening is formed in the image observation bin, and the image observation bin is used for placing an image observation unit and enabling the image observation unit to observe the readings of the multi-density relay through the observation opening.
Further, the integrated monitoring test device in the invention comprises:
the air supplementing bin is arranged in the first cavity and fixedly connected with the inner side wall of the first cavity.
The control device is arranged in the first cavity and is communicated with the air supplementing bin through the connecting pipeline.
The digital pressure measuring meter is arranged in the first cavity and is used for monitoring the internal pressure of the connecting pipeline.
The exhaust device is arranged in the first cavity and connected with the contrast device through the connecting pipeline, and the exhaust device is used for exhausting the gas in the connecting pipeline.
Further, the control device of the present invention includes:
the control multi-density relay base is arranged in the first cavity and is communicated with the connecting pipeline.
The standard multi-density relay is arranged on the comparison multi-density relay base and is in rotary connection with the comparison multi-density relay base.
The image observation base is arranged on the comparison multi-density relay base, the image observation base is fixedly connected with the comparison multi-density relay base, and the image observation base is used for placing the image observation unit and enabling the image observation unit to observe the standard multi-density relay readings.
Further, the exhaust device of the present invention includes:
the vacuum pump is arranged in the first cavity, one end of the vacuum pump penetrates through the body, the other end of the vacuum pump is communicated with the connecting pipeline, and the vacuum pump is used for exhausting gas in the connecting pipeline.
The electromagnetic valve is arranged in the first cavity and fixedly connected with the connecting pipeline, and the electromagnetic valve is used for blocking gas flow in the connecting pipeline.
The flow regulating valve is arranged in the first cavity and fixedly connected with the connecting pipeline, and the flow regulating valve is used for regulating the gas flow in the connecting pipeline.
Further, the body in the present invention further includes:
the monitoring device is arranged outside the body and is connected with the outer surface of the body,and the monitoring device, the refrigerating device and the heating device 、 Temperature measuring instrument 、 Digital manometer 、 Image observation unit 、 Vacuum pump 、 The electromagnetic valve is connected with the flow regulating valve through a connecting wire.
Further, the monitoring device in the present invention includes:
the receiving unit is arranged inside the monitoring device and connected with the inner side wall of the monitoring device, and the receiving unit is used for receiving data information.
The processing unit is arranged inside the monitoring device, the processing unit is connected with the inner side wall of the monitoring device, and the processing unit is used for processing the received data information.
The control unit is arranged inside the monitoring device and connected with the inner side wall of the monitoring device, and is used for controlling the refrigerating device and the heating device 、 Temperature measuring instrument 、 Digital manometer 、 Image observation unit 、 Vacuum pump 、 The solenoid valve and the flow regulating valve operate.
The communication unit is arranged inside the monitoring device and is connected with the inner side wall of the monitoring device.
The control button is arranged outside the monitoring device and connected with the outer side wall of the monitoring device, and the control button is connected with the control unit through a connecting wire.
Furthermore, the invention also provides a SF6 and mixed gas density relay performance test method, through the SF6 and mixed gas density relay performance test platform, the monitoring device is used for detecting the multi-density relay to be detected in the high-low temperature and humidity alternating test box and the standard multi-density relay in the comparison device, and whether the multi-density relay to be detected is qualified is judged.
Further, if the multi-density relay to be detected is consistent with the standard multi-density relay in reading and reading under the same temperature, humidity and pressure environment, judging that the multi-density relay to be detected is qualified.
And if the reading indication numbers of the multi-density relay to be detected and the standard multi-density relay are inconsistent in the same temperature, humidity and pressure environment, judging that the multi-density relay to be detected is unqualified.
Compared with the prior art, the SF6 and mixed gas density relay performance test platform provided by the embodiment of the invention has the beneficial effects that: starting the vacuum pump to exhaust the pipeline, the connecting pipeline, the multi-density relay synchronization device and the gas storage bin by opening the electromagnetic valve, and enabling the interior of the pipeline, the connecting pipeline, the multi-density relay synchronization device and the gas storage bin to be vacuum; the SF6 and the mixed gas thereof are refrigerated or heated through the refrigerating device and the heating device, the actual working environment temperature of the SF6 and the mixed gas density relay thereof is simulated, the gas temperature and the gas pressure data are collected in real time through the monitoring device, the curve of the gas temperature and the gas pressure changing along with time is automatically drawn, the change rule of the temperature and the gas pressure is analyzed, the curve of the temperature and the gas pressure is automatically drawn, and the curve of the temperature and the gas pressure is sent to a mobile phone, a PC, an intelligent terminal and the like of a user through the communication unit; the multi-density relay synchronous device can monitor the lifting of a plurality of multi-density relays simultaneously to improve the working efficiency of the density relay detection test.
The performance test platform of the SF6 and the mixed gas density relay provided by the embodiment of the invention performs performance tests of a plurality of multi-density relays in a full-use temperature range, wherein the performance tests comprise a temperature test, a temperature cycle test, an air tightness test and the like. The multiple multi-density relays in the test temperature box can be observed through the camera, pressure and temperature data acquired by the test platform are analyzed, processed and stored through the monitoring device, the test data are uploaded to a user mobile phone, a PC, an intelligent terminal and the like, and the density relays to be detected are monitored, controlled and the like in real time through the mobile phone, the PC, the intelligent terminal and the like.
According to the SF6 and mixed gas density relay performance test method, the SF6 and mixed gas density relay performance test platform is adopted, and whether the detected multi-density relay is qualified or not can be intuitively judged by comparing the standard multi-density relay with the detected multi-density relay in the indicating number under the full-temperature environment.
Drawings
FIG. 1 is a schematic diagram of a frame structure of a performance test platform for SF6 and a mixed gas density relay according to an embodiment of the invention;
fig. 2 is a schematic structural diagram of a synchronization device of a multi-density relay according to an embodiment of the present invention.
In the figure, 1, an integrated monitoring test device; 2. a high-low temperature and humidity alternating test box; 3. a monitoring device; 11. an air supplementing bin; 111. a pressure reducing valve; 12. a comparison device; 13. a digital manometer; 14. an exhaust device; 121. comparing the multi-density relay base; 122. a standard multi-density relay; 141. a vacuum pump; 142. an electromagnetic valve; 143. a flow regulating valve; 21. a multi-density relay synchronizer; 211. a multi-density relay synchronizer base; 212. a multi-density relay mount; 213. c star connecting pipe; 214. a temperature measuring instrument; 215. an image observation device; 2151. a connecting frame; 2152. a telescopic support column; 2153. an image observation bin; 2154. an image observation unit; 22. a gas storage bin; 23. and a connecting pipeline.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
As shown in fig. 1, an SF6 and mixed gas density relay performance test platform according to a preferred embodiment of the present invention includes: the device comprises a body, a high-low temperature and humidity alternating test box 2, an integrated monitoring test device 1 and a monitoring device 3.
Specifically, the body is provided with first cavity and second cavity.
Specifically, the high-low temperature and humidity alternating test box 2 is arranged in the second cavity, and the high-low temperature and humidity alternating test box 2 is used for testing SF6 and a mixed gas density relay thereof.
Specifically, the integrated monitoring test device 1 is arranged in the first cavity, and the integrated monitoring test device 1 is connected with the high-low temperature and humidity alternating test box 2 through a connecting pipeline 23, so that the integrated monitoring test device 1 is used for monitoring test data of SF6 and a mixed gas density relay thereof in the high-low temperature and humidity alternating test box 2.
It can be understood that the SF6 and the mixed gas density relay performance test platform body are used for storing the integrated monitoring test device 1 and the high-low temperature and humidity alternating test box 2 by arranging a cavity and a second cavity, wherein the integrated monitoring test device 1 and the high-low temperature and humidity alternating test box 2 are communicated through a connecting pipeline 23, and whether the performance of the multi-density relay to be detected in the high-low temperature and humidity alternating test box 2 is qualified or not is detected by the comparison experiment of the integrated monitoring test device 1 and the high-low temperature and humidity alternating test box 2.
Preferably, the first cavity and the second cavity in the body are respectively provided with a bin cover with an observation window, so that a worker can observe the running conditions in the first cavity and the second cavity.
Specifically, the high-low temperature and humidity alternating test box 2 in the embodiment of the invention comprises:
the multi-density relay synchronization device 21 is arranged inside the high-low temperature and humidity alternating test box 2, the multi-density relay synchronization device 21 is clamped with the inner side wall of the high-low temperature and humidity alternating test box 2, and the multi-density relay synchronization device 21 is used for installing SF6 to be tested and mixed gas density relays of the SF6 to be tested.
The refrigerating device is arranged in the second cavity and connected with the outer wall of the high-low temperature and humidity alternating test box 2 through a pipeline, and the refrigerating device is used for refrigerating the internal temperature of the high-low temperature and humidity alternating test box 2.
The heating device is arranged in the second cavity and connected with the outer wall of the high-low temperature and humidity alternating test box 2, and the heating device is used for heating the internal temperature of the high-low temperature and humidity alternating test box 2.
The gas storage bin 22 is arranged in the second cavity, is connected with the inner side wall of the second cavity and is communicated with the multi-density relay synchronization device 21 through a connecting pipeline 23.
It can be understood that the high-low temperature and humidity alternating test box 2 in the embodiment of the invention is used for controlling the internal environment temperature of the test box by arranging the refrigerating device and the heating device, simulating the working environment of the multi-density relays, simulating the air chamber by the air storage bin 22, performing the working operation condition of the multi-density relays, and performing the performance test on the plurality of multi-density relays at one time by the multi-density relay synchronization device 21.
Preferably, the high-low temperature and humidity alternating test box 2 is provided with a plurality of multi-density relay synchronization devices 21 which are arranged side by side up and down and are used for synchronously monitoring a plurality of multi-density relays, so that the working efficiency of monitoring a large number of multi-density relays is improved.
As shown in fig. 2, the multi-density relay synchronization device 21 according to the embodiment of the present invention includes:
the multi-density relay synchronization device base 211 is arranged inside the high-low temperature and humidity alternating test box 2, and the multi-density relay synchronization device base 211 is clamped with the inner side wall of the high-low temperature and humidity alternating test box 2.
The multiple density relay mount 212 is disposed on the upper surface of the multiple density relay synchronizer 211, and the multiple density relay mounts 212 are fixedly connected along the circumference of the multiple density relay synchronizer 21.
The C star connection pipe 213 is disposed between the multi-density relay mount 212 and the adjacent multi-density relay mount 212, and the C star connection pipe 213 is used for communicating the adjacent two multi-density relay mounts 212.
The temperature measuring instrument 214 is arranged inside the multi-density relay synchronization device base 211, and the temperature measuring instrument 214 is used for measuring the temperature of the C star connecting pipe 213.
The image observation device 215 is arranged on the multi-density relay synchronization device base 211, the image observation device 215 is fixedly connected with the multi-density relay synchronization device base 211, and the image observation device 215 is used for observing multi-density relay readings.
It can be understood that in the multi-density relay synchronizer 21 according to the embodiment of the present invention, the multi-density relay synchronizer base 211 and the multi-density relay mounting seat 212 are provided for mounting a plurality of multi-density relays for testing, and the multi-density relay mounting seats 212 are communicated through the C-star connection pipe 213, however, the gas runs into each multi-density relay mounting seat 212 along the C-star connection pipe 213, and the plurality of multi-density relays perform the synchronization test; the temperature detector 214 is installed in the multi-density relay synchronization device base 211, so that the monitoring device 3 can monitor the gas temperature in the simulation work in real time, and the image observation device 215 is installed on the multi-density relay synchronization device base 211, can observe the corresponding multi-density relay reading indication through the image observation unit 2154 and is used for recording the multi-density relay reading indication by the monitoring device 3.
Specifically, the image observation apparatus 215 in the embodiment of the present invention includes:
the connection frame 2151 is disposed on the multi-density relay synchronizer base 211, and the connection frame 2151 is fixedly connected to the multi-density relay synchronizer base 211.
The telescopic support column 2152 is arranged on the connecting frame 2151, and the telescopic support column 2152 is fixedly connected with the connection.
It can be understood that, in the embodiment of the present invention, the image observation device 215 is fixedly connected with the multi-density relay synchronization device base 211 by the connection frame 2151, so as to fix the image observation device 215, the height of the image observation device 215 can be adjusted by the telescopic support column 2152 to be horizontally aligned with the multi-density relay, the image observation units 2154 can observe the multi-density relay reading readings with different heights conveniently, the image observation units 2154 can be placed by the image observation bin 2153, and the observation ports are arranged at each image observation unit 2154 to facilitate the image observation units 2154 to observe the corresponding multi-density relay reading readings.
As shown in fig. 1, an integrated monitoring test apparatus 1 according to an embodiment of the present invention includes:
the air supplementing bin 11 is arranged in the first cavity, and the air supplementing bin 11 is fixedly connected with the inner side wall of the first cavity.
The contrast device 12 is arranged in the first cavity, and the contrast device 12 is communicated with the air supplementing bin 11 through a connecting pipeline 23.
The digital pressure measuring meter 13 is arranged in the first cavity, the digital pressure measuring meter 13 and the connecting pipeline 23, and the digital pressure measuring meter 13 is used for monitoring the internal pressure of the connecting pipeline 23.
And the exhaust device 14 is arranged in the first cavity, the exhaust device 14 is connected with the contrast device 12 through a connecting pipeline 23, and the exhaust device 14 is used for exhausting the gas in the connecting pipeline 23.
It can be understood that in the embodiment of the present invention, the exhaust device 14 is used to exhaust the gas stored in the connecting pipeline 23 and adjust the pressure of the gas in the connecting pipeline 23, the gas supplementing bin 11 is used to supplement the gas in the connecting pipeline 23, the digital pressure measuring meter 13 is arranged in the connecting pipeline 23 to monitor the change of the pressure of the gas in the pipeline in real time and send the change to the monitoring device 3, the comparison device 12 is arranged in the connecting pipeline 23, and the comparison device 12 is used to compare whether the multi-density relay to be detected is qualified or not by observing the reading and displaying of the comparison device 12 in the simulated experimental environment.
The preferred air make-up reservoir 11 is provided with a pressure reducing valve 111 for reducing the pressure of the exhaust air from the air make-up reservoir 11.
Specifically, the control device 12 in the embodiment of the present invention includes:
and the contrast multi-density relay base 121 is arranged in the first cavity, and the contrast multi-density relay base 121 is communicated with the connecting pipeline 23.
The standard multi-density relay 122 is arranged on the comparison multi-density relay base 121, and the standard multi-density relay 122 is rotatably connected with the comparison multi-density relay base 121.
The image observation base is arranged on the comparison multi-density relay base 121, the image observation base is fixedly connected with the comparison multi-density relay base 121, and is used for placing the image observation unit 2154 and enabling the image observation unit 2154 to observe the reading of the standard multi-density relay 122.
It can be appreciated that in the embodiment of the present invention, the comparison device 12 makes the standard multi-density relay 122 and the multi-density relay to be detected test in the same temperature environment and pressure environment by comparing the multi-density relay base 121, and the image observation unit 2154 is arranged on the comparison multi-density relay base 121 to observe the reading and the number of the standard multi-density relay 122, so as to send the reading and the number to the monitoring device 3 through the connection wire.
Specifically, the exhaust device 14 in the embodiment of the present invention includes:
the vacuum pump 141 is arranged in the first cavity, one end of the vacuum pump 141 penetrates through the body, the other end of the vacuum pump 141 is communicated with the connecting pipeline 23, and the vacuum pump 141 is used for exhausting gas in the connecting pipeline 23.
The electromagnetic valve 142 is arranged in the first cavity, the electromagnetic valve 142 is fixedly connected with the connecting pipeline 23, and the electromagnetic valve 142 is used for blocking the gas flow in the connecting pipeline 23.
The flow regulating valve 143 is arranged in the first cavity, the flow regulating valve 143 is fixedly connected with the connecting pipeline 23, and the flow regulating valve 143 regulates the flow of gas in the connecting pipeline 23.
It will be appreciated that in the embodiment of the present invention, the exhaust device 14 is configured to communicate the vacuum pump 141 with the connection pipe 23, so that the vacuum pump 141 evacuates and discharges the gas in the connection pipe 23, the used electromagnetic valve 142 communicates with the connection pipe 23, and the exhaust device 14 is blocked from flowing the test gas to thereby manufacture a gas flow circuit, and the flow rate regulating valve 143 communicates with the connection pipe 23, so as to control the flow rate of the gas in the connection pipe 23, thereby simulating the authenticity of the test.
Specifically, in the embodiment of the present invention, the monitoring device 3 is disposed outside the body, the monitoring device 3 is connected to the outer surface of the body, and the monitoring device 3 is connected to the refrigerating device, the heating device, the thermometer 214, the digital manometer 13, the image observation unit 2154, the vacuum pump 141, the electromagnetic valve 142, and the flow rate regulating valve 143 through connection wires.
Specifically, the monitoring device 3 according to the embodiment of the present invention includes:
the receiving unit is arranged inside the monitoring device 3, is connected with the inner side wall of the monitoring device 3 and is used for receiving data information.
The processing unit is arranged inside the monitoring device 3, is connected with the inner side wall of the monitoring device 3 and is used for processing and receiving data information.
The control unit is arranged inside the monitoring device 3, is connected with the inner side wall of the monitoring device 3 and is used for controlling the operation of the refrigerating device, the heating device, the thermometer 214, the digital pressure meter 13, the image observation unit 2154, the vacuum pump 141, the electromagnetic valve 142 and the flow regulating valve 143.
And the communication unit is arranged inside the monitoring device 3 and is connected with the inner side wall of the monitoring device 3.
The control button is arranged outside the monitoring device 3 and connected with the outer side wall of the monitoring device 3, and the control button is connected with the control unit through a connecting wire.
It can be understood that, in the embodiment of the present invention, by providing the receiving unit, the data information of the thermometer 214, the digital manometer 13 and the image observing unit 2154 is received, and these data information are sent to the processing unit, so as to perform data processing and analysis, and the processed and analyzed data are sent to the mobile phone, pc or the intelligent product terminal of the user through the communication unit; or the user sends instructions to the processing unit through the mobile phone, pc or intelligent product terminal, the instructions sent by the user are processed through the processing unit and then sent to the control unit, then the control unit controls the refrigerating device, the heating device, the thermometer 214, the digital pressure meter 13, the image observing unit 2154, the vacuum pump 141, the electromagnetic valve 142 and the flow regulating valve 143 through connecting wires, so that the refrigerating device, the heating device, the thermometer 214, the digital pressure meter 13, the image observing unit 2154, the vacuum pump 141, the electromagnetic valve 142 and the flow regulating valve 143 are controlled to operate, and the control button is connected with the control unit through the connecting wires, so that the monitoring device 3 cannot be contacted with the mobile phone, pc or intelligent product terminal of the user, and can also be controlled through the control button.
Preferably, the communication unit includes: 4G, 5G, bluetooth, network connection lines and satellite communication modules.
Preferably, the embodiment of the invention can set the full temperature environment of the high-low temperature and humidity alternating test box 2 through a mobile phone, a pc or an intelligent product terminal.
According to the performance test method for the SF6 and the mixed gas density relay, the performance test platform for the SF6 and the mixed gas density relay is used for carrying out performance test monitoring on the multi-density relay to be detected.
Specifically, in the embodiment of the invention, the monitoring device 3 detects the multi-density relay to be detected in the high-low temperature and humidity alternating test box 2 and the standard multi-density relay 122 in the comparison device 12 to judge whether the multi-density relay to be detected is qualified, wherein,
if the reading and the indication of the multi-density relay to be detected are consistent with those of the standard multi-density relay 122 in the same temperature, humidity and pressure environment, the multi-density relay to be detected is judged to be qualified.
If the reading and the indication of the multi-density relay to be detected are inconsistent with those of the standard multi-density relay 122 in the same temperature, humidity and pressure environment, the multi-density relay to be detected is judged to be unqualified.
It can be understood that in the performance test method for the SF6 and the mixed gas density relay in the embodiment of the invention, the multi-density relay to be detected in the high-low temperature and humidity alternating test box 2 and the standard multi-density relay 122 in the comparison device 12 are detected to perform a comparison test, whether the reading readings of the multi-density relay to be detected and the standard multi-density relay 122 are consistent in the same temperature and pressure environment is observed under the same temperature environment and pressure environment, and if the reading readings of the multi-density relay to be detected and the standard multi-density relay 122 are consistent in the same temperature and pressure environment, the multi-density relay to be detected is judged to be qualified; if the reading and the indication of the multi-density relay to be detected are inconsistent with those of the standard multi-density relay 122 in the same temperature, humidity and pressure environment, the multi-density relay to be detected is judged to be unqualified.
Specifically, in the embodiment of the present invention, by opening the electromagnetic valve 142, the vacuum pump 141 is started to exhaust the pipeline, the connecting pipeline 23, the multi-density relay synchronization device and the gas storage bin 22, and the pipeline, the connecting pipeline 23, the multi-density relay synchronization device and the gas storage bin 22 are vacuumized; the SF6 and the mixed gas thereof are refrigerated or heated through the refrigerating device and the heating device, the actual working environment temperature of the SF6 and the mixed gas density relay thereof is simulated, the gas temperature and the gas pressure data are collected in real time through the monitoring device 3, the curve of the change of the gas temperature and the gas pressure along with the time is automatically drawn, the change rule of the temperature and the gas pressure is analyzed, the curve of the temperature and the gas pressure is automatically drawn, and the curve of the temperature and the gas pressure is sent to intelligent products such as mobile phones of users through the communication unit; the multi-density relay synchronization device 21 can monitor the lifting of a plurality of multi-density relays simultaneously, and the working efficiency of the density relay detection test is improved.
In summary, the working method of the preferred embodiment in the embodiment of the present invention is as follows:
(1) The solenoid valve 142 is opened, the vacuum pump is started, and the connecting pipeline, the multi-density relay 21 synchronization device and the gas storage bin 22 are vacuumized.
(2) The monitoring device 3 is used for collecting the temperature and pressure data of the gas in real time, automatically drawing a curve of the temperature and pressure data along with the time, analyzing the change rule of the temperature and pressure, and automatically drawing a curve graph of the temperature and the pressure.
(3) And (5) carrying out insulating gas cryogenic test research to obtain density curves before and after the liquefaction critical temperature.
a) The air supplementing bin 11 fills SF6/CF4 air with set pressure into the air storage bin 22, and a test is carried out after the air tightness detection is qualified;
b) The temperature of the high-low temperature and humidity alternating test box 2 is set to be within the range of theoretical liquefaction temperature minus 5 ℃ to liquefaction temperature minus 10 ℃ and is automatically cooled at intervals of 1 ℃;
c) The monitoring device 3 analysis platform automatically collects gas temperature and pressure data and analyzes and obtains density curves before and after the liquefaction critical temperature under the set pressure;
(4) And simulating the field operation environment, connecting multi-density relays of different principles at different positions, and developing the comparison research of compensation performance of the density meters of different principles and different temperatures (corresponding to different temperature areas of the density meters and the air chambers) under the same pressure.
a) Referring to FIG. 1, an SF6 and SF6/CF4 environment-friendly mixed gas operation characteristic test platform is built, and an air supplementing bin 11 fills SF6/CF4 gas with set pressure into an air storage bin 22 (a simulated air chamber);
b) Placing a standard multi-density relay 122 installed on a gas storage bin 22 (an analog air chamber) and a control multi-density relay base 121 in a first cavity, placing the tested multi-density relay with different principles installed on a multi-density relay synchronous device 21 in a high-low temperature and humidity alternating test box 2, setting the program control temperature of the test box to be-10 ℃, 20 ℃ below zero, 30 ℃ below zero, 40 ℃ below zero and 50 ℃ below zero, simulating the on-site operation environment, and observing and recording errors of the multi-density relay inside and outside the high-low temperature and humidity alternating test box 2 under the rated density;
c) And comparing and researching the compensation performance of the density meter according to different principles, if the density representation value changes within the error range, the temperature compensation performance of the multi-density relay is qualified, and if the density representation value changes outside the error range, the temperature compensation performance of the multi-density relay is unqualified.
(5) And (5) performing a temperature test and a temperature cycle test on the multi-density relay.
a) Rated temperature test: building an SF6 and SF6/CF4 environment-friendly mixed gas operation characteristic test platform according to FIG. 1, and filling gas into a gas storage bin 22 (a simulated gas chamber) to rated pressure by a gas supplementing bin 11 at 20 ℃ for 2 hours; and controlling the high-low temperature and humidity alternating test box 2 to rise/fall to the temperature of the test point (4 in total), wherein the temperature change rate is not more than 1 ℃/min.
b) Set point signal value test: the multi-density relay to be tested is controlled to be placed at the temperature of a checking point by the high-low temperature and humidity alternating test box 2, the set point signal value of the multi-density relay to be tested is compared with the target value at the temperature, and the difference value of the set point signal value and the target value is smaller than the basic error.
c) Temperature cycling experiments: the high-low temperature and humidity alternating test box 2 is controlled to enable a density meter to be tested to be kept at 10mi & lt/EN & gt at normal temperature, then kept at the lowest working temperature for 3h, then kept at the highest working temperature for 3h, finally kept at the normal temperature for 10mi & lt/EN & gt, so that a temperature cycle test of 5 cycles is born, and if the multi-density relay has no leakage phenomenon after the test, the multi-density relay temperature cycle test is qualified; if the leakage phenomenon exists in the multi-density relay after the test, the temperature cycle test of the multi-density relay is not qualified.
(6) And according to the using conditions of the multi-density relay, checking the accuracy of the multi-density relay in the full-use temperature range.
a) According to FIG. 1, an SF6 and SF6/CF4 environment-friendly mixed gas operation characteristic test platform is built, and SF6 gas with set pressure is filled into a gas storage bin 22 (a simulated air chamber) by a gas supplementing bin 11;
b) Setting the program-controlled temperature of the high-low temperature and humidity alternating test box 2 as 40 ℃, 30 ℃, 20 ℃, 10 ℃, 0 ℃, 10 ℃ minus, 20 ℃ minus, 30 ℃ minus, 40 ℃ minus and 50 ℃ minus, observing and recording the indication number of the density meter inside and outside the constant temperature box through an image observation unit 2154 after the temperature is stable, and if the indication number is consistent, judging that the tested multi-density relay is qualified; if the indication is inconsistent, the tested multi-density relay is not qualified (gas liquefaction should be considered at low temperature and compared with a liquefaction density curve).
(7) Air tightness test
a) A single multi-density relay to be tested is connected to the multi-density relay synchronizer 21, and the other multi-density relay synchronizer bases 211 are closed.
b) And (3) supplementing gas to the SF6 and the mixed gas density relay performance test platform thereof to a preset pressure value through a gas storage bin 22 (an analog gas chamber), adjusting to a preset temperature through a high-low temperature and humidity alternating test box 2, recording the detection value of the digital pressure measuring meter 13 and the reading of the multi-density relay at the moment, and standing the multi-density relay to be tested for 24 hours.
c) After standing for 24 hours at the set temperature, the detection value of the digital pressure meter 13 and the reading of the multi-density relay are recorded, and whether leakage occurs in the multi-density relay to be detected can be judged according to the front-back change condition of the detection value and the reading of the multi-density relay.
(8) Drawing SF6/CF4 temperature-pressure characteristic curves with different densities by adopting the SF6 and mixed gas density relay performance test platform:
a) Filling test gas: under the condition of 20 ℃, SF6/CF4 gas with certain pressure (absolute pressure is 0.4 MPa) is filled into a gas storage bin 22 (an analog gas chamber) by the gas supplementing bin 11, the accurate pressure value of the gas can be detected by the digital pressure measuring meter 13, the gas pressure can be finely adjusted by opening the electromagnetic valve 142 and controlling the flow regulating valve 143, and a test is carried out after the gas tightness is detected to be qualified;
b) The program-controlled temperature of the high-low temperature and humidity alternating test box 2 is set to be 40 ℃, 30 ℃, 20 ℃, 10 ℃, 0 ℃, 10 ℃ minus, 20 ℃ minus, 30 ℃ minus, 40 ℃ minus and 50 ℃ minus, and the monitoring device 3 automatically records the pressure and temperature values of the high-low temperature and humidity alternating test box every 6 minutes through a serial port and draws a pressure-temperature curve graph.
c) Opening the electromagnetic valve 142, controlling the pressure reducing valve 111 to supplement gas to the gas storage bin 22 through the gas supplementing bin 11, and closing the electromagnetic valve 142 when the pressure value in the gas storage bin 22 is respectively increased to 0.5MPa, 0.6MPa, 0.7MPa, 0.8MPa, 0.9MPa and 1.0 MPa; repeating the previous step to obtain SF6/CF4 temperature-pressure characteristic curves under different densities.
In summary, the embodiment of the invention provides an SF6 and mixed gas density relay performance test platform, which performs performance tests including temperature tests, temperature cycle tests, air tightness tests and the like on a plurality of multi-density relays in a full use temperature range. The pressure and temperature data collected by the test platform can be analyzed, processed and stored through the monitoring device 3, the test data can be uploaded to the intelligent terminal such as the mobile phone of the user, and the density relays to be detected can be monitored, controlled and the like in real time through the mobile phone, the PC, the intelligent terminal and the like.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and these modifications and substitutions should also be considered as being within the scope of the present invention.
Claims (10)
1. SF6 and mixed gas density relay performance test platform thereof, characterized by comprising:
the body is provided with a first cavity and a second cavity;
the high-low temperature and humidity alternating test box is arranged in the second cavity and is used for testing SF6 and a mixed gas density relay thereof;
the integrated monitoring test device is arranged in the first cavity and is connected with the high-low temperature and humidity alternating test box through a connecting pipeline, so that the integrated monitoring test device is used for monitoring test data of the SF6 and the mixed gas density relay in the high-low temperature and humidity alternating test box.
2. The SF6 and mixed gas density relay performance test platform of claim 1, wherein the high and low temperature and humidity alternating test chamber comprises:
The multi-density relay synchronization device is arranged inside the high-low temperature and humidity alternating test box and is clamped with the inner side wall of the high-low temperature and humidity alternating test box, and the multi-density relay synchronization device is used for installing SF6 to be tested and a mixed gas density relay thereof;
the refrigerating device is arranged in the second cavity and connected with the outer wall of the high-low temperature and humidity alternating test box through a pipeline, and the refrigerating device is used for refrigerating the internal temperature of the high-low temperature and humidity alternating test box;
the heating device is arranged in the second cavity and connected with the outer wall of the high-low temperature and humidity alternating test box, and the heating device is used for heating the internal temperature of the high-low temperature and humidity alternating test box;
the gas storage device is arranged in the second cavity and connected with the inner side wall of the second cavity, and is communicated with the multi-density relay synchronization device through a connecting pipeline.
3. The SF6 and gas mixture density relay performance test platform of claim 2, wherein the multi-density relay synchronization device comprises:
The multi-density relay synchronization device base is arranged inside the high-low temperature and humidity alternating test box and is clamped with the inner side wall of the high-low temperature and humidity alternating test box;
the multi-density relay installation seats are arranged on the upper surface of the base of the multi-density relay synchronization device and are fixedly connected along the circumferential direction of the multi-density relay synchronization device;
the C star connecting pipe is arranged between the multi-density relay mounting seat and the adjacent multi-density relay mounting seat and is used for communicating the adjacent two multi-density relay mounting seats;
the temperature measuring instrument is arranged in the base of the multi-density relay synchronization device and is used for measuring the temperature of the C star connecting pipe;
the image observation device is arranged on the base of the multi-density relay synchronization device, the image observation device is fixedly connected with the base of the multi-density relay synchronization device, and the image observation device is used for observing the readings of the multi-density relay.
4. A SF6 and gas mixture density relay performance test platform of claim 3, wherein the image observation device comprises:
The connecting frame is arranged on the base of the multi-density relay synchronization device and is fixedly connected with the base of the multi-density relay synchronization device;
the telescopic support column is arranged on the connecting frame and is fixedly connected with the connection;
the image observation bin is arranged at the top of the telescopic support column and fixedly connected with the telescopic support column, an observation opening is formed in the image observation bin, and the image observation bin is used for placing an image observation unit and enabling the image observation unit to observe the readings of the multi-density relay through the observation opening.
5. The SF6 and gas mixture density relay performance test platform of claim 1, wherein the integrated monitoring test device comprises:
the air supplementing bin is arranged in the first cavity and fixedly connected with the inner side wall of the first cavity;
the control device is arranged in the first cavity and is communicated with the air supplementing bin through the connecting pipeline;
the digital pressure measuring meter is arranged in the first cavity and is used for monitoring the internal pressure of the connecting pipeline;
The exhaust device is arranged in the first cavity and connected with the contrast device through the connecting pipeline, and the exhaust device is used for exhausting the gas in the connecting pipeline.
6. The SF6 and gas mixture density relay performance test platform of claim 5, wherein the control means comprises:
the control multi-density relay base is arranged in the first cavity and is communicated with the connecting pipeline;
the standard multi-density relay is arranged on the comparison multi-density relay base and is rotationally connected with the comparison multi-density relay base;
the image observation base is arranged on the comparison multi-density relay base, the image observation base is fixedly connected with the comparison multi-density relay base, and the image observation base is used for placing the image observation unit and enabling the image observation unit to observe the standard multi-density relay readings.
7. The SF6 and gas mixture density relay performance test platform of claim 5, wherein the exhaust comprises:
The vacuum pump is arranged in the first cavity, one end of the vacuum pump penetrates through the body, the other end of the vacuum pump is communicated with the connecting pipeline, and the vacuum pump is used for exhausting gas in the connecting pipeline;
the electromagnetic valve is arranged in the first cavity and fixedly connected with the connecting pipeline, and the electromagnetic valve is used for blocking the gas flow in the connecting pipeline;
the flow regulating valve is arranged in the first cavity and fixedly connected with the connecting pipeline, and the flow regulating valve is used for regulating the gas flow in the connecting pipeline.
8. The SF6 and gas mixture density relay performance test platform of claim 1, wherein the body further comprises:
the monitoring device is arranged outside the body and connected with the outer surface of the body, and the monitoring device is connected with the refrigerating device and the heating device 、 Temperature measuring instrument 、 Digital manometer 、 Image observation unit 、 Vacuum pump 、 The electromagnetic valve is connected with the flow regulating valve through a connecting wire.
9. The SF6 and gas mixture density relay performance test platform of claim 8, wherein the monitoring device comprises:
The receiving unit is arranged inside the monitoring device, is connected with the inner side wall of the monitoring device and is used for receiving data information;
the processing unit is arranged inside the monitoring device, is connected with the inner side wall of the monitoring device and is used for processing the received data information;
the control unit is arranged inside the monitoring device and connected with the inner side wall of the monitoring device, and is used for controlling the refrigerating device and the heating device 、 Temperature measuring instrument 、 Digital manometer 、 Image observation unit 、 Vacuum pump 、 The electromagnetic valve and the flow regulating valve operate;
the communication unit is arranged inside the monitoring device and is connected with the inner side wall of the monitoring device;
the control button is arranged outside the monitoring device and connected with the outer side wall of the monitoring device, and the control button is connected with the control unit through a connecting wire.
10. A performance test method for SF6 and a mixed gas density relay thereof is characterized in that the method adopts the performance test platform for SF6 and a mixed gas density relay thereof according to any one of claims 1-9, the monitoring device is used for detecting a multi-density relay to be detected in the high-low temperature and humidity alternating test box and a standard multi-density relay in a comparison device, and judging whether the multi-density relay to be detected is qualified or not, wherein,
If the reading indication numbers of the multi-density relay to be detected are consistent with those of the standard multi-density relay under the same temperature, humidity and pressure environment, judging that the multi-density relay to be detected is qualified;
and if the reading indication numbers of the multi-density relay to be detected and the standard multi-density relay are inconsistent in the same temperature, humidity and pressure environment, judging that the multi-density relay to be detected is unqualified.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116990468A (en) * | 2023-09-28 | 2023-11-03 | 国网江苏省电力有限公司电力科学研究院 | System and method for testing and evaluating gas state of simulated sulfur hexafluoride electrical equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116990468A (en) * | 2023-09-28 | 2023-11-03 | 国网江苏省电力有限公司电力科学研究院 | System and method for testing and evaluating gas state of simulated sulfur hexafluoride electrical equipment |
| CN116990468B (en) * | 2023-09-28 | 2023-12-05 | 国网江苏省电力有限公司电力科学研究院 | System and method for testing and evaluating gas state of simulated sulfur hexafluoride electrical equipment |
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