CN110333066B - Breather valve calibration stand - Google Patents
Breather valve calibration stand Download PDFInfo
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- CN110333066B CN110333066B CN201910655416.XA CN201910655416A CN110333066B CN 110333066 B CN110333066 B CN 110333066B CN 201910655416 A CN201910655416 A CN 201910655416A CN 110333066 B CN110333066 B CN 110333066B
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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 breather valve inspection devices, in particular to a breather valve calibration stand which comprises a table frame, wherein external air is processed through an air processing box, the temperature of the air is guaranteed to be 20 ℃, the relative humidity is 50%, the detection result is inaccurate due to reduction of external factors, an air pump is enabled to pressurize a pressure stabilizing tank by starting the air pump, the change of a micro-pressure counting value is observed, namely, the pressure test is completed, a vacuum pump is started, the pressure in the pressure stabilizing tank is reduced, the change of a pressure value in the pressure stabilizing tank is recorded on a micro-pressure meter, namely, the detection of leakage quantity is completed, water is injected into the pressure stabilizing tank through a water suction pump, the air pump is started, the pressure stabilizing tank is pressurized, the change of the micro-pressure counting value is observed, and the simulation of overpressure effect is completed.
Description
Technical Field
The invention relates to the technical field of breather valve inspection devices, in particular to a breather valve calibration stand.
Background
In an oil refining chemical device, a breather valve is low-pressure protection equipment used in the industries of petroleum, chemical industry, natural gas and the like, and the breather valve can not only maintain the air pressure balance of a storage tank, ensure that the storage tank is prevented from being damaged in overpressure or vacuum, but also reduce the volatilization and loss of a medium in the tank, thereby meeting the ventilation requirement of the size respiration of the storage tank;
according to the regulation of GB50160 national standard (petrochemical industry enterprise design fire protection standard), "fixed roof tank of class A, class B liquid, use spark arrester and breather valve", it is visible breather valve, spark arrester are the indispensable safety device of storage tank, therefore overhaul maintenance and check to breather valve safety equipment in the installation region are a regular work, but there is the unstable problem of atmospheric pressure to the equipment that the breather valve detected now, lead to the fact the measuring result to have inaccurate phenomenon, and because the change of humidity and temperature in the air also can bring the influence to the measuring result, and when detecting superpressure or vacuum, can't simulate the state of storage tank when having the medium, there is the inaccurate problem of detection.
Disclosure of Invention
The invention aims to provide a breather valve calibration stand to solve the problems of unstable air humidity and temperature and inaccurate detection caused by no medium detection in a storage tank in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: comprises a table frame, one side of the lower end of the table frame is fixedly provided with a surge tank, the upper end of the surge tank is fixedly provided with a flange, the upper end of the flange is screwed with a respiratory valve to be detected, the lower end of the surge tank is fixedly provided with a connecting pipe, one end of the connecting pipe is fixedly provided with a water drain pipe, the interior of the water drain pipe is fixedly provided with a water drain valve, one end of the upper surface of the connecting pipe is fixedly provided with an air inlet pipe, the middle position of the air inlet pipe is fixedly provided with a first valve disc, the upper end of the air inlet pipe is fixedly provided with an air pump, the air pump is fixedly arranged on one side of the upper surface of the table frame, the air inlet of the air pump is fixedly provided with an air treatment box, one side of the lower end inside, a humidifier is fixedly arranged in the air treatment box and close to the upper end of the heating pipe, a microprocessor is fixedly arranged on one side of the upper end in the air treatment box, a temperature and humidity detector is fixedly arranged on one side of the interior of the air treatment box, the temperature and humidity detector is electrically connected with the microprocessor, and the microprocessor is electrically connected with the humidifier, the heating pipe and the refrigerator;
a water inlet pipe is fixedly mounted on one side, close to the air inlet pipe, of the upper surface of the connecting pipe, a second valve disc is fixedly mounted inside the water inlet pipe, a water suction pump is fixedly mounted at the upper end of the water inlet pipe, and the water suction pump is fixedly mounted in the middle of the lower surface of the table frame;
the upper surface of connecting pipe is close to one side fixed mounting of inlet tube has the exhaust tube, the intermediate position fixed mounting of exhaust tube has the third valve disc, the upper end fixed mounting of exhaust tube has the vacuum pump, vacuum pump fixed mounting in the upper surface of table frame is close to one side of air treatment case, the one end fixed mounting of connecting pipe has the test tube, the upper end fixed mounting of test tube has the micromanometer, the micromanometer inlay install in upper surface one side of table frame, the upper surface of table frame is close to one side of micromanometer is inlayed and is installed control panel, control panel electric connection the air pump the vacuum pump with the suction pump, one side fixed mounting of table frame has power plug, the outside commercial power of power plug electric connection.
Preferably, the upper end of the surge tank penetrates through the table frame and extends to the upper surface of the table frame to be fixedly connected with the flange.
Preferably, the surge tank is of a spherical structure.
Preferably, the first valve disc is a needle type micro gas regulating valve.
Preferably, the vacuum pump is a rotary vane pump.
Preferably, the table frame is of a U-shaped structure, and one end of the air inlet pipe and one end of the air exhaust pipe penetrate through the upper surface of the table frame and extend to the upper portion of the table frame.
Preferably, vent holes are uniformly formed in one side of the air treatment box.
The invention has the technical effects and advantages that:
1. the vacuum pump is arranged, the vacuum pump is a rotary vane type vacuum pump, the stability of a vacuum system is improved, the needle type micro gas regulating valve is adopted as the first valve disc, the stability of the fed gas is good in the positive pressure test process, the data can be observed in the test process, the average pressure value when the valve is opened can be measured through multiple times of measurement, and the measured data are more accurate;
2. the pressure stabilizing tank is arranged, so that the stability of air flow is ensured, the detection data are more accurate, and the air processing box effectively controls the air to be at the temperature of 20 ℃ and the relative humidity of 50% and reduces the influence of external factors on the detection result;
3. the invention can simulate overpressure and vacuum tests when the storage tank contains a medium in the using process of the breather valve by arranging the water pump, and is beneficial to more accurate checking results of the breather valve.
Drawings
FIG. 1 is a front cross-sectional view of the present invention.
Fig. 2 is a front view of the present invention.
FIG. 3 is a partial enlarged view of the present invention at A.
FIG. 4 is a top view of the present invention.
FIG. 5 is a diagram of electrical connection according to the present invention.
In the figure: 1. a table frame; 2. a surge tank; 3. a flange; 4. a breather valve to be detected; 5. a connecting pipe; 6. a drain pipe; 7. a water drain valve; 8. an air inlet pipe; 9. a first valve disc; 10. an air pump; 11. an air treatment box; 12. a refrigerator; 13. heating a tube; 14. a humidifier; 15. a microprocessor; 16. a temperature and humidity detector; 17. a water inlet pipe; 18. a second valve disc; 19. a water pump; 20. an air exhaust pipe; 21. a third valve disc; 22. a vacuum pump; 23. a detection tube; 24. a micro-manometer; 25. a control panel; 26. and a power plug.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a breather valve checking table as shown in figures 1-4, which comprises a table frame 1, wherein the table frame 1 is of a U-shaped structure, one end of an air inlet pipe 8 and one end of an air exhaust pipe 20 both penetrate through the upper surface of the table frame 1 and extend to the upper part of the table frame 1, one side of the lower end of the table frame 1 is fixedly provided with a pressure stabilizing tank 2, the pressure stabilizing tank 2 is of a spherical structure and is used for ensuring the stability of air flow, the upper end of the pressure stabilizing tank 2 penetrates through the table frame 1 and extends to the upper surface of the table frame 1 to be fixedly connected with a flange 3, the upper end of the pressure stabilizing tank 2 is fixedly provided with the flange 3, the upper end of the flange 3 is provided with a breather valve 4 to be checked through screws, the lower end of the pressure stabilizing tank 2 is fixedly provided with a connecting pipe 5, one end of the connecting pipe 5 is fixedly provided with a water drain pipe 6, the interior of the water drain pipe, a first valve disc 9 is fixedly installed in the middle of the air inlet pipe 8, the first valve disc 9 is a needle-shaped micro-gas regulating valve, an air pump 10 is fixedly installed at the upper end of the air inlet pipe 8, the air pump 10 is fixedly installed on one side of the upper surface of the table frame 1, and an air treatment box 11 is fixedly installed at an air inlet of the air pump 10 and used for adjusting and treating the humidity and the temperature of outside air;
a water inlet pipe 17 is fixedly installed on one side, close to the air inlet pipe 8, of the upper surface of the connecting pipe 5, a second valve disc 18 is fixedly installed inside the water inlet pipe 17, a water suction pump 19 is fixedly installed at the upper end of the water inlet pipe 17, and the water suction pump 19 is fixedly installed in the middle of the lower surface of the table frame 1;
one side fixed mounting that the upper surface of connecting pipe 5 is close to inlet tube 17 has exhaust tube 20, the intermediate position fixed mounting of exhaust tube 20 has third valve disc 21, the upper end fixed mounting of exhaust tube 20 has vacuum pump 22, vacuum pump 22 is the antithetical couplet rotary vane vacuum pump, vacuum pump 22 fixed mounting is close to one side of air treatment case 11 in the upper surface of table frame 1, the one end fixed mounting of connecting pipe 5 has detecting tube 23, the upper end fixed mounting of detecting tube 23 has micromanometer 24, micromanometer 24 inlays and installs in upper surface one side of table frame 1, one side that the upper surface of table frame 1 is close to micromanometer 24 is inlayed and is installed control panel 25, control panel 25 electric connection air pump 10, vacuum pump 22 and suction pump 19, one side fixed mounting of table frame 1 has power plug 26, power plug 26 electric connection outside commercial power.
As shown in fig. 3, vent holes are uniformly opened on one side of the air treatment box 11, a refrigerator 12 is fixedly installed on one side of the lower end inside the air treatment box 11, a heating pipe 13 is fixedly installed on the other side of the inside of the air treatment box 11 close to the refrigerator 12, a humidifier 14 is fixedly installed on the upper end of the inside of the air treatment box 11 close to the heating pipe 13, a microprocessor 15 is fixedly installed on one side of the upper end inside the air treatment box 11, and the type of the microprocessor 15 is preferably: 6ES7313-6CF03-0AB0, a temperature and humidity detector 16 is fixedly installed at one side of the inside of the air processing box 11, and the type of the temperature and humidity detector 16 is preferably as follows: EN8822B, the temperature and humidity detector 16 is electrically connected with the microprocessor 15, and the microprocessor 15 is electrically connected with the humidifier 14, the heating pipe 13 and the refrigerator 12.
The working principle of the invention is as follows: when the device is used, the breather valve 4 to be detected is fixed on the flange 3 through screws, the power plug 26 is connected with commercial power, before pressure test, in order to ensure that the temperature of air is 20 ℃ and the relative humidity is 50%, and reduce the detection result caused by external factors, the humidity and the temperature of the air are detected through the temperature and humidity detector 16, when the air temperature is too low, the microprocessor 15 starts the heating pipe 13 to heat the air, when the temperature is too high, the microprocessor 15 starts the refrigerator 12 to cool the air, when the humidity of the air is too low, the microprocessor 15 starts the humidifier 14 to humidify the air, when the humidity of the air is too high, the microprocessor 15 starts the heating pipe 13 and the refrigerator 12 to dehumidify the air, so that the temperature of the air is 20 ℃ and the humidity is 50%;
the first embodiment is as follows: when an overpressure test is carried out, the drain valve 7, the second valve disc 18 and the third valve disc 21 are closed, the air pump 10 is started through the control panel 25, the first valve disc 9 is rotated to a micro-opening state, the air pump 10 injects air treated in the air treatment box 11 into the pressure stabilizing tank 2, a pressure value is recorded on the micro-pressure gauge 24, the pressure value is recorded once every minute, then the first valve disc 9 is rotated by 90 degrees and 180 degrees respectively, the experiment is repeated, each opening state is repeated three times, an average value is taken, then the average value is observed, whether the standard is met is judged, and the overpressure test is finished;
example two: when a vacuum test is performed, the drain valve 7, the first valve disc 9 and the second valve disc 18 are closed, the vacuum pump 22 is started through the control panel 25, so that air in the surge tank 2 is discharged through the vacuum pump 22, the pressure in the surge tank 2 is reduced, the change of the pressure in the surge tank 2 is recorded on the micro-pressure gauge 24, the recording is performed once every minute and is performed three times in total, an average value is obtained, whether the average value meets the requirement or not is observed, and then the detection of the leakage amount is completed;
example three: when the simulated overpressure test is carried out, a water inlet of a water pump 19 is connected with an external water source, a water drain valve 7, a first valve disc 9 and a third valve disc 21 are closed, a second valve disc 18 is opened, the water pump 19 is opened through a control panel 25, external water is injected into a pressure stabilizing tank 2 through the water pump 19, after a proper amount of water is injected, the water pump 19 is closed through the control panel 25, the second valve disc 18 is closed, an air pump 10 is opened through the control panel 25, the first valve disc 9 is rotated to a micro-opening state, the air pump 10 injects air treated in an air treatment tank 11 into the pressure stabilizing tank 2, a pressure value is recorded on a micro-pressure gauge 24 once every minute, the first valve disc 9 is rotated by 90 degrees and 180 degrees respectively, the experiment is repeated for three times, an average value is taken, and the average value is observed to see whether the standard is reached or not, namely, the simulation overpressure is checked, and after the simulation overpressure check is finished, the water in the surge tank 2 is discharged through the drain pipe 6 by opening the drain valve 7.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (7)
1. The utility model provides a breather valve check table, includes table frame (1), its characterized in that: one side fixed mounting of the lower end of the table frame (1) has a surge tank (2), the upper end fixed mounting of the surge tank (2) has a flange (3), the upper end screw mounting of the flange (3) has a respiratory valve (4) to be examined, the lower end fixed mounting of the surge tank (2) has a connecting pipe (5), the one end fixed mounting of the connecting pipe (5) has a water drain pipe (6), the inside fixed mounting of the water drain pipe (6) has a water drain valve (7), the upper surface one end fixed mounting of the connecting pipe (5) has an air inlet pipe (8), the intermediate position fixed mounting of the air inlet pipe (8) has a first valve disc (9), the upper end fixed mounting of the air inlet pipe (8) has an air pump (10), the air pump (10) is fixed mounting in the upper surface one side of the table frame (1), the air inlet fixed mounting of the air pump (10, a refrigerator (12) is fixedly mounted on one side of the lower end inside the air treatment box (11), a heating pipe (13) is fixedly mounted on the other side, close to the refrigerator (12), inside the air treatment box (11), a humidifier (14) is fixedly mounted on the upper end, close to the heating pipe (13), inside the air treatment box (11), a microprocessor (15) is fixedly mounted on one side of the upper end inside the air treatment box (11), a temperature and humidity detector (16) is fixedly mounted on one side inside the air treatment box (11), the temperature and humidity detector (16) is electrically connected with the microprocessor (15), and the microprocessor (15) is electrically connected with the humidifier (14), the heating pipe (13) and the refrigerator (12);
a water inlet pipe (17) is fixedly mounted on one side, close to the air inlet pipe (8), of the upper surface of the connecting pipe (5), a second valve disc (18) is fixedly mounted inside the water inlet pipe (17), a water suction pump (19) is fixedly mounted at the upper end of the water inlet pipe (17), and the water suction pump (19) is fixedly mounted in the middle of the lower surface of the table frame (1);
the upper surface of connecting pipe (5) is close to one side fixed mounting of inlet tube (17) has exhaust tube (20), the intermediate position fixed mounting of exhaust tube (20) has third valve disc (21), the upper end fixed mounting of exhaust tube (20) has vacuum pump (22), vacuum pump (22) fixed mounting in the upper surface of table frame (1) is close to one side of air treatment case (11), the one end fixed mounting of connecting pipe (5) has detecting tube (23), the upper end fixed mounting of detecting tube (23) has micromanometer (24), micromanometer (24) inlay install in upper surface one side of table frame (1), the upper surface of table frame (1) is close to one side of micromanometer (24) is inlayed and is installed control panel (25), control panel (25) electric connection air pump (10), Vacuum pump (22) with suction pump (19), one side fixed mounting of table frame (1) has power plug (26), power plug (26) electric connection outside commercial power.
2. A breather valve calibration station according to claim 1, wherein: the upper end of the pressure stabilizing tank (2) penetrates through the table frame (1) and extends to the upper surface of the table frame (1) and the flange (3) to be fixedly connected.
3. A breather valve calibration station according to claim 1, wherein: the pressure stabilizing tank (2) is of a spherical structure.
4. A breather valve calibration station according to claim 1, wherein: the first valve disc (9) is a needle-type micro gas regulating valve.
5. A breather valve calibration station according to claim 1, wherein: the vacuum pump (22) is a rotary vane pump.
6. A breather valve calibration station according to claim 1, wherein: the table frame (1) is of a U-shaped structure, and the air inlet pipe (8) and one end of the air exhaust pipe (20) penetrate through the upper surface of the table frame (1) and extend to the upper portion of the table frame (1).
7. A breather valve calibration station according to claim 1, wherein: and vent holes are uniformly formed in one side of the air treatment box (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910655416.XA CN110333066B (en) | 2019-07-19 | 2019-07-19 | Breather valve calibration stand |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910655416.XA CN110333066B (en) | 2019-07-19 | 2019-07-19 | Breather valve calibration stand |
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| Publication Number | Publication Date |
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| CN110333066A CN110333066A (en) | 2019-10-15 |
| CN110333066B true CN110333066B (en) | 2020-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910655416.XA Active CN110333066B (en) | 2019-07-19 | 2019-07-19 | Breather valve calibration stand |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114739656A (en) * | 2022-03-01 | 2022-07-12 | 江苏复森特种阀门有限公司 | Integrated overflow-preventing fire-retardant breather valve performance test system |
| CN115162985B (en) * | 2022-06-15 | 2023-06-13 | 四川大学 | Deep in-situ fidelity core calibration platform safety monitoring system |
| CN115112366B (en) * | 2022-07-20 | 2023-08-25 | 西南石油大学 | Full-working-condition simulation and high-precision intelligent detection system and method for breather valve |
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| JPH09303218A (en) * | 1996-05-17 | 1997-11-25 | Toyota Motor Corp | Fuel vapor processing device |
| US6105557A (en) * | 1998-07-30 | 2000-08-22 | Robert Bosch Gmbh | Method of checking the operability of a tank-venting system |
| CN2791631Y (en) * | 2005-02-06 | 2006-06-28 | 郭俊杰 | Breathing valve checking table |
| CN202372338U (en) * | 2011-11-25 | 2012-08-08 | 北京航天动力研究所 | Breathing valve calibrating table |
| CN202693296U (en) * | 2012-07-25 | 2013-01-23 | 聂世全 | Novel portable oil tank breathing valve calibrator |
| CN206906018U (en) * | 2017-07-18 | 2018-01-19 | 尹强 | A kind of breathing relief valve checking table |
| CN109655257A (en) * | 2019-01-21 | 2019-04-19 | 广东省特种设备检测研究院珠海检测院 | A kind of portable tank vehicle constant pressure tank body breather valve calibration equipment |
| CN208968768U (en) * | 2018-09-20 | 2019-06-11 | 苏州八九昱昊材料科技有限公司 | A kind of breather valve air-tightness tester |
-
2019
- 2019-07-19 CN CN201910655416.XA patent/CN110333066B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09303218A (en) * | 1996-05-17 | 1997-11-25 | Toyota Motor Corp | Fuel vapor processing device |
| US6105557A (en) * | 1998-07-30 | 2000-08-22 | Robert Bosch Gmbh | Method of checking the operability of a tank-venting system |
| CN2791631Y (en) * | 2005-02-06 | 2006-06-28 | 郭俊杰 | Breathing valve checking table |
| CN202372338U (en) * | 2011-11-25 | 2012-08-08 | 北京航天动力研究所 | Breathing valve calibrating table |
| CN202693296U (en) * | 2012-07-25 | 2013-01-23 | 聂世全 | Novel portable oil tank breathing valve calibrator |
| CN206906018U (en) * | 2017-07-18 | 2018-01-19 | 尹强 | A kind of breathing relief valve checking table |
| CN208968768U (en) * | 2018-09-20 | 2019-06-11 | 苏州八九昱昊材料科技有限公司 | A kind of breather valve air-tightness tester |
| CN109655257A (en) * | 2019-01-21 | 2019-04-19 | 广东省特种设备检测研究院珠海检测院 | A kind of portable tank vehicle constant pressure tank body breather valve calibration equipment |
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