CN210829978U - Portable pressure relief valve detection platform - Google Patents
Portable pressure relief valve detection platform Download PDFInfo
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- CN210829978U CN210829978U CN201921751402.XU CN201921751402U CN210829978U CN 210829978 U CN210829978 U CN 210829978U CN 201921751402 U CN201921751402 U CN 201921751402U CN 210829978 U CN210829978 U CN 210829978U
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- valve
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- pressure relief
- relief valve
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- 238000001514 detection method Methods 0.000 title claims description 8
- 238000012360 testing method Methods 0.000 claims abstract description 73
- 230000003584 silencer Effects 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims 1
- 238000007789 sealing Methods 0.000 description 15
- 239000012528 membrane Substances 0.000 description 14
- 230000008569 process Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 206010011878 Deafness Diseases 0.000 description 1
- 208000009205 Tinnitus Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000010370 hearing loss Effects 0.000 description 1
- 231100000888 hearing loss Toxicity 0.000 description 1
- 208000016354 hearing loss disease Diseases 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 231100000886 tinnitus Toxicity 0.000 description 1
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Abstract
The utility model discloses a portable pressure release valve detects platform aims at providing a pressure release valve that can reduce the test noise and detects platform. The device comprises a base, a testing tank arranged on the base, an air inlet electromagnetic valve arranged on the testing tank, a combination valve connected with the air inlet electromagnetic valve, an air-water separator connected with the combination valve, a high-frequency dynamic pressure sensor, a safety valve, an exhaust electromagnetic valve and a bottom drain valve which are arranged on the testing tank, and a controller respectively connected with the air inlet electromagnetic valve, the exhaust electromagnetic valve and the high-frequency dynamic pressure sensor; the top of the test tank is provided with a test port for connecting with the pressure release valve, and the connecting end of the test port and the pressure release valve is provided with a first flange; the test tank further comprises a support fixedly arranged on the test tank, a silencer arranged on the support, and a second flange connected with an inlet of the silencer through a soft joint. The utility model discloses the travelling comfort of use can be effectively improved.
Description
Technical Field
The utility model belongs to the technical field of pressure relief valve check-up technique for the transformer and specifically relates to a portable pressure relief valve detects platform is related to.
Background
A pressure relief valve is a pressure protection device for a transformer. When the inside of the transformer breaks down, oil is decomposed to generate a large amount of gas, and because the transformer is basically closed, a connecting pipe for communicating an oil conservator is thin, the pressure cannot be effectively and rapidly reduced only by a small connecting pipe, the pressure in an oil tank is rapidly increased, and if a pressure release valve is not arranged, the oil tank of the transformer can be cracked. When the pressure in the transformer oil tank rises sharply, the pressure release valve is opened in time to reduce the pressure in the oil tank, and after the pressure in the oil tank is reduced, the pressure release valve is automatically closed to keep the sealing of the oil tank.
The pressure relief valve is an important protection device for the transformer, and the misoperation or the failure of the pressure relief valve can have great influence on the safe and reliable operation of the transformer. When the inside of the transformer has faults (overheating, short circuit, breakdown and the like), the transformer oil expands, abnormal pressure in the transformer needs to be discharged, and otherwise, the oil tank is seriously deformed and burst, so that serious accidents are caused. Secondly, after many years of operation, especially under severe conditions, the pressure relief valve is damaged in sealing and reduced in insulating property, and if the pressure relief valve is continuously operated, leakage, false alarm or failure can be easily caused. In addition, pressure relief valves produced by different suppliers have widely different qualities, and it is not uncommon to select pressure relief valve manufacturers. Therefore, it is a very important task to strengthen the pressure relief valve check supervision and strictly check the customs. In order to ensure that the pressure release device meets the requirements of working conditions, the accurate detection of the opening pressure, the closing pressure and the sealing pressure of the pressure release device is particularly important. How to accurately and effectively detect the opening pressure value, the closing pressure value and the sealing pressure value of the pressure release valve becomes the problem of wide attention and common concern of relevant personnel for operation, maintenance, test and the like of a power system.
The existing release valve detection device is roughly divided into a portable type and a desk type. The desk type equipment is large in size and mainly used for laboratory calibration, and the desk type equipment is small in size and can be carried to the site for calibration work. In the detection process of the pressure release valve, the pressure release valve needs to be opened repeatedly, a large number of pressure release valves need to be detected each time, and high-decibel airflow noise can be generated when the pressure release valve is opened each time, so that the hearing of a tester is damaged, and the situations of tinnitus, hearing loss and the like of the tester occur; and also causes noise pollution to the surrounding environment.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an aim at overcoming the not enough of prior art existence, provide a test noise is little, can avoid the impaired portable pressure release valve of tester hearing to examine test table.
In order to solve the technical problem, the utility model discloses a realize through following technical scheme:
a portable pressure relief valve detection platform comprises a base, a test tank arranged on the base, an air inlet electromagnetic valve arranged on the test tank, a combination valve connected with the air inlet electromagnetic valve, an air-water separator connected with the combination valve, a high-frequency dynamic pressure sensor, a safety valve, an exhaust electromagnetic valve and a bottom drain valve arranged on the test tank, and a controller respectively connected with the air inlet electromagnetic valve, the exhaust electromagnetic valve and the high-frequency dynamic pressure sensor; the top of the test tank is provided with a test port for connecting with the pressure release valve, and the connecting end of the test port and the pressure release valve is provided with a first flange; the test tank further comprises a support fixedly arranged on the test tank, a silencer arranged on the support, and a second flange connected with an inlet of the silencer through a soft joint.
Preferably, the muffler is a reactive muffler, an impedance compound muffler or an active muffler.
Preferably, the controller is a controller with a touch screen.
Preferably, the self-locking walking wheel is arranged at the lower end of the base.
Preferably, it further comprises an adjustable foot disposed at the lower end of the base.
Compared with the prior art, the utility model has the advantages of as follows:
the utility model discloses a set up the silencer, entry end and first flange joint during pressure relief valve test, exit end and second flange joint can effectively reduce the air current noise decibel that pressure relief valve opened the production, avoid the noise to cause the damage to tester's hearing then to improve test environment's travelling comfort.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a left side view of fig. 1.
In the figure: 1. a gas-water separator; 2. an exhaust solenoid valve; 3. a high frequency dynamic pressure sensor; 4. a controller; 5. a bottom drain valve; 6. a second flange; 7. an air inlet solenoid valve; 8. a first flange; 9. a test port; 10. a test tank; 11. self-locking traveling wheels; 12. a muffler; 13. touch screen; 14. a pressure relief valve; 15. a safety valve; 16 a support; 17. a combination valve; 18. a base; 19. and (4) soft joints.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention. In the following description, for the sake of clarity of illustrating the structure and operation of the present invention, reference will be made to the accompanying drawings by means of directional terms, but the terms "front", "rear", "left", "right", "up", "down", etc. should be construed as convenient terms and not as limitative terms.
As shown in fig. 1-2, the portable pressure relief valve test bench comprises a base 18, a test tank 10 arranged on the base 18, an air inlet electromagnetic valve 7 arranged on the test tank 10, a combination valve 17 connected with the air inlet electromagnetic valve 7, a gas-water separator 1 connected with the combination valve 17, a high-frequency dynamic pressure sensor 3, a safety valve 15, an air outlet electromagnetic valve 2 and a bottom drain valve 5 arranged on the test tank 10, and a controller 4 respectively connected with the air inlet electromagnetic valve 7, the air outlet electromagnetic valve 2 and the high-frequency dynamic pressure sensor 3; the top of the test tank 10 is provided with a test port 9 for connecting with a pressure release valve 14, and the connecting end of the test port 9 and the pressure release valve 14 is provided with a first flange 8; it also includes a bracket 16 fixedly disposed on the test tank 10, a muffler 12 disposed on the bracket 16, and a second flange 6 connected to an inlet of the muffler 12 through a soft joint 19.
In this embodiment, the muffler 12 may be a reactive muffler, an impedance hybrid muffler, or an active muffler.
In this embodiment, the controller 4 preferably adopts a controller with a touch screen 13, so as to facilitate intuitive operation and control. The controller 4 is a conventional controller, and may be a commercially available product, which is the same as the controller of the conventional commercially available pressure relief valve detection device.
In this embodiment, it further includes self-locking walking wheels 11 disposed at the lower end of the base 18. The quick movement is convenient. As a further improvement, the self-locking walking wheel lifting device further comprises an adjustable supporting leg (not shown in the figure) arranged at the lower end of the base 18, and when the self-locking walking wheel lifting device is used, the adjustable supporting leg is adjusted to enable the self-locking walking wheel to lift off the ground so as to improve the stability of the device.
The utility model discloses air supply during the use is not limited to use air compressor machine, the air compressor machine of taking the gas holder, compressed gas jar etc..
The pressure relief valve 14 is mounted on the test tank 10 by a first flange 8, the first flange 8 being connected to the outlet end of the pressure relief valve 14. The first flange 8 can be configured according to the caliber of a mounting flange at the bottom of the pressure relief valve 14; the central through hole of the first flange 8 is consistent with the caliber of the pressure relief valve 14. The high decibel airflow noise generated by the opening of the pressure relief valve 14 is muffled by the muffler.
The portable pressure relief valve 14 test stand is used in a manner consistent with the prior art, specifically as follows:
preparation of the test: and selecting a corresponding first flange 8 according to the pressure relief valves 14 with different calibers, installing the first flange on the test port 9 of the test tank 10, and connecting the outlet ends of the pressure relief valves 14 with the second flange 6. And (3) starting a power switch, selecting various parameters of the pressure release valve 14 through a touch screen, and pressing a [ OK ] key to start a test after setting.
And (3) pressure increment control: at the moment, the controller 4 collects the high-frequency dynamic pressure sensor 3 to judge the pressure sudden change, starts to draw a pressure starting point of the curve graph, starts to time, and stops timing when the pressure relief valve 14 reaches the opening pressure of the membrane disc. The start-to-end time pressure rise process is timed by the controller 4, which is the pressure increase kPa/s.
Opening pressure test: and the gas source enters the combination valve 17 after passing through the pipeline to the gas-water separator 1, the required constant gas inlet pressure of the test tank 10 is adjusted, and then the gas inlet electromagnetic valve 7 is opened, so that the gas source enters the test tank 10 at the constant pressure. When the required pressure rises to the opening pressure of the sealing surface membrane disc of the pressure relief valve 14 according to the corresponding increment relation of the required pressure, the controller 4 records the pressure value at the moment through the high-frequency dynamic pressure sensor 3. This value is the pressure at which the pressure relief valve 14 opens. Meanwhile, the pressure in the test tank 10 is rapidly released after the sealing surface membrane disc of the pressure release valve 14 is opened, and the pressure releasing speed is greater than the air inlet speed in the test tank 10, so that the sealing surface membrane disc of the pressure release valve 14 is closed, the pressure in the test tank 10 rises again under the condition of keeping the air inlet state, the pressure release valve 14 is opened again, and an intermittent jumping process occurs. The controller 4 records the interval between the two bounce events, which is the intermittent bounce period time of the pressure relief valve 14.
Opening time test: and the gas source enters the combination valve 17 after passing through the pipeline to the gas-water separator 1, the required constant gas inlet pressure of the test tank 10 is adjusted, and then the gas inlet electromagnetic valve 7 is opened, so that the gas source enters the test tank 10 at the constant pressure. The pressure in the test tank 10 is increased according to the corresponding incremental relationship of the required pressure until the sealing surface membrane disc of the pressure relief valve 14 is opened, and the pressure is simultaneously arranged at the position where the displacement sensor of the adjusting bracket 16 is just observed relative to the exhaust port membrane disc of the pressure relief valve 14. The membrane disc state is a pressure relief valve 14 membrane disc closed state; the membrane disc state is the highest position state of the pressure relief valve 14 for opening the membrane disc. The controller 4 monitors the displacement time from the membrane disc state to the membrane disc state through the displacement sensor, and the difference of the movement time of the two states is the opening time of the pressure relief valve 14.
Closing pressure value test: and the gas source enters the combination valve 17 after passing through the pipeline to the gas-water separator 1, the required constant gas inlet pressure of the test tank 10 is adjusted, and then the gas inlet electromagnetic valve 7 is opened, so that the gas source enters the test tank 10 at the constant pressure. The pressure in the test tank 10 is increased in accordance with the desired pressure increase to the point where the pressure relief valve 14 seals the face diaphragm open. The controller 4 closes the combination valve 17 and the air inlet electromagnetic valve 7, and at the moment, the pressure in the test tank 10 is rapidly released after the sealing surface membrane disc of the pressure release valve 14 is opened, so that the sealing surface membrane disc of the pressure release valve 14 is closed. When the pressure value in the test tank 10 is constant, the controller 4 records the current pressure value through the high-frequency dynamic pressure sensor 3, and the value is the closing value of the pressure release valve 14.
Sealing performance test of sealing pressure value: and the gas source enters the combination valve 17 after passing through the pipeline to the gas-water separator 1, is regulated to the constant gas inlet pressure required by the current test tank 10, and then the gas inlet electromagnetic valve 7 is opened, so that the gas source enters the test tank 10 at the constant pressure. When the high-frequency dynamic pressure sensor 3 monitors that the pressure in the test tank 10 rises to a sealing pressure set value of the pressure release valve 14, the controller 4 closes the combination valve 17 and the air inlet electromagnetic valve 7, starts to count down according to the set sealing pressure maintaining time, and simultaneously monitors the pressure change process in the test tank 10 in real time through the high-frequency dynamic pressure sensor 3. After the countdown is finished, the high-frequency dynamic pressure sensor 3 records the current pressure in the test tank 10, namely the sealing pressure value of the pressure release valve 14.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The portable pressure relief valve detection platform comprises a base, a test tank arranged on the base, an air inlet electromagnetic valve arranged on the test tank, a combination valve connected with the air inlet electromagnetic valve, an air-water separator connected with the combination valve, a high-frequency dynamic pressure sensor, a safety valve, an exhaust electromagnetic valve and a bottom drain valve arranged on the test tank, and a controller respectively connected with the air inlet electromagnetic valve, the exhaust electromagnetic valve and the high-frequency dynamic pressure sensor; the top of the test tank is provided with a test port for connecting with the pressure release valve, and the connecting end of the test port and the pressure release valve is provided with a first flange; the method is characterized in that: the test tank further comprises a support fixedly arranged on the test tank, a silencer arranged on the support, and a second flange connected with an inlet of the silencer through a soft joint.
2. The portable pressure relief valve test station of claim 1, wherein: the silencer adopts a reactive silencer, an impedance composite silencer or an active silencer.
3. The portable pressure relief valve test stand of claim 1 or 2, wherein: the controller adopts a controller with a touch screen.
4. The portable pressure relief valve test stand of claim 1 or 2, wherein: it also comprises a self-locking travelling wheel arranged at the lower end of the base.
5. The portable pressure relief valve test station of claim 3, wherein: it also comprises a self-locking travelling wheel arranged at the lower end of the base.
6. The portable pressure relief valve test stand of claim 1 or 2, wherein: it also comprises an adjustable supporting foot arranged at the lower end of the base.
7. The portable pressure relief valve test station of claim 3, wherein: it also comprises an adjustable supporting foot arranged at the lower end of the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921751402.XU CN210829978U (en) | 2019-10-18 | 2019-10-18 | Portable pressure relief valve detection platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921751402.XU CN210829978U (en) | 2019-10-18 | 2019-10-18 | Portable pressure relief valve detection platform |
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| Publication Number | Publication Date |
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| CN210829978U true CN210829978U (en) | 2020-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921751402.XU Active CN210829978U (en) | 2019-10-18 | 2019-10-18 | Portable pressure relief valve detection platform |
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| CN (1) | CN210829978U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630590A (en) * | 2019-10-18 | 2019-12-31 | 云南同巨实业有限公司 | Portable pressure relief valve detection platform |
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- 2019-10-18 CN CN201921751402.XU patent/CN210829978U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630590A (en) * | 2019-10-18 | 2019-12-31 | 云南同巨实业有限公司 | Portable pressure relief valve detection platform |
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| TR01 | Transfer of patent right |
Effective date of registration: 20231019 Address after: 3/F, Unit 3, Building 2, No. 6 Langyue Road, Shuangfengqiao Street, Yubei District, Chongqing, 400000 Patentee after: Chongqing huawang Intelligent Sensor Research Institute Co.,Ltd. Address before: No. 1f, unit 2, building 14, yuchunyuan, Century City, Kunming, Yunnan 650000 Patentee before: Yunnan TongJu Industry Co.,Ltd. |