CN211234880U

CN211234880U - Detection apparatus for pressure vessel relief valve

Info

Publication number: CN211234880U
Application number: CN202020189927.5U
Authority: CN
Inventors: 康晓鹏
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-02-20
Filing date: 2020-02-20
Publication date: 2020-08-11
Anticipated expiration: 2030-02-20

Abstract

The utility model relates to a detection apparatus for pressure vessel relief valve, relate to pressure vessel safety inspection's technical field, it includes the intake pipe, the solenoid valve, first seal pot, the second seal pot, the back flow and joint, intake pipe and relief valve gas vent intercommunication, the one end intercommunication of relief valve is kept away from with the intake pipe to the one end of solenoid valve, the other end of solenoid valve respectively with first seal pot, the second seal pot intercommunication, the one end and the second seal pot intercommunication of back flow, the other end and the joint intercommunication of back flow, the one end and the relief valve stem mouth intercommunication of back flow are kept away from in the joint, the intercommunication has first manometer in the first seal pot, be provided with the dynamometer in the joint, the dynamometer is connected with the valve rod of relief valve. The utility model discloses can measure whether the relief valve leaks gas, also can measure whether up to standard the pressure value of opening of relief valve, need not pull down the relief valve when measuring the opening pressure of relief valve moreover for the mill can not improve production efficiency for measuring the relief valve and stopping production.

Description

Detection apparatus for pressure vessel relief valve

Technical Field

The utility model belongs to the technical field of pressure vessel safety inspection's technique and specifically relates to a detection device of pressure vessel relief valve is related to.

Background

The safety valve is a special valve, wherein the opening and closing part is in a normally closed state under the action of external force, and when the pressure of a medium in equipment or a pipeline rises to exceed a specified value, the medium is discharged to the outside of the system to prevent the pressure of the medium in the pipeline or the equipment from exceeding the specified value. The safety valve is mainly used for boiler, pressure container and pipeline, and its control pressure is not greater than specified value, so that it can play important role in protecting personal safety and equipment operation.

At present, the announcement day is 2019 year 05 month 24 days, and chinese utility model patent that the announcement number is CN208902348U provides a relief valve leakproofness detection device, including the pressure vessel of installation relief valve, the air pump is connected and supplies the pressure with pressure vessel, and the relief valve gas vent passes through fixing device and apron sealing connection, and the apron is gone up to open porosely and the air inlet sealing connection of pipeline, and during the gas outlet of pipeline entered into the measurement container under water, the measurement container opening just the top down was equipped with the scale. When the measuring container is used, the exhaust port of the safety valve is communicated to the measuring container filled with water through a pipeline, and if the safety valve leaks air, bubbles are generated in the measuring container.

The above prior art solutions have the following drawbacks: the safety valve tightness detection device can only measure whether the safety valve leaks air or not in a static state, and cannot measure whether the opening pressure value of the safety valve reaches the standard or not when the safety valve works.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a detection apparatus for pressure vessel relief valve, can both can measure whether gas leakage, also can measure whether up to standard of opening the pressure value of relief valve at relief valve during operation at the relief valve.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model provides a detection apparatus for pressure vessel relief valve, including the intake pipe, the solenoid valve, first seal pot, the second seal pot, back flow and joint, intake pipe and relief valve gas vent intercommunication, the one end intercommunication of relief valve is kept away from to the one end and the intake pipe of solenoid valve, the other end of solenoid valve respectively with first seal pot, the second seal pot intercommunication, the one end and the second seal pot intercommunication of back flow, the other end and the joint intercommunication of back flow, the one end and the relief valve port intercommunication of back flow are kept away from to the joint, the intercommunication has first manometer in the first seal pot, be provided with the dynamometer in the joint, the dynamometer is connected with the valve rod of relief valve.

By adopting the technical scheme, when the safety valve is measured to be in air leakage, the air inlet pipe is communicated with the air outlet of the safety valve, then the two ends of the electromagnetic valve are respectively communicated with the air inlet pipe and the first sealing tank, then the electromagnetic valve is kept still for a period of time, the first pressure gauge is observed, if the display value of the first pressure gauge is increased, the air leakage of the safety valve is represented, and whether the safety valve meets the specification or not can be calculated according to the increased value of the first pressure gauge and the volume of the first sealing tank; when the opening pressure of the safety valve is measured, the air inlet pipe is communicated with an air outlet of the safety valve, then two ends of the electromagnetic valve are respectively communicated with the air inlet pipe and the second sealing tank, then the valve rod of the safety valve is opened through the force measuring mechanism, the gas in the pressure container is communicated into the second sealing tank, the pressure in the second sealing tank is the same as the pressure in the pressure container, then two ends of the electromagnetic valve are respectively communicated with the air inlet pipe and the first sealing tank, the valve rod is pulled through the force measuring mechanism, and the value measured by the force measuring mechanism is the opening pressure value of the safety valve when the display value of the first pressure gauge changes; so both can measure whether the relief valve leaks gas, also can measure whether up to standard the opening pressure value of relief valve, need not pull down the relief valve when measuring the opening pressure of relief valve moreover for the mill can not be for measuring the relief valve and the shut down, improves production efficiency.

The present invention may be further configured in a preferred embodiment as: the force measuring mechanism includes the pull rod, the lifting hook, electricity measuring apparatus and display, the coaxial setting of valve rod of pull rod and relief valve, and the pull rod passes the one end that the joint kept away from the relief valve, the pull rod slides along the length direction of self with the joint and is connected, electricity measuring apparatus fixed connection is in the one end that the pull rod is close to the relief valve, the one end that hook portion was kept away from to the lifting hook is connected with the one end universal that the pull rod was kept away from to electricity measuring apparatus, the lifting hook articulates with the valve rod of relief valve, display fixed connection is on the outer peripheral face that connects, and electricity measuring.

Through adopting above-mentioned technical scheme, when measuring the cracking pressure of relief valve, connect with the valve rod hookup of lifting hook and relief valve earlier, later pulling the pull rod, open the valve rod of relief valve, because the atmospheric pressure in the joint is the same with the atmospheric pressure in the pressure vessel this moment, when the relief valve was opened, the pressure that the electricity dynamometer surveyed was just the cracking pressure value of relief valve.

The present invention may be further configured in a preferred embodiment as: the end of the pull rod, which is far away from the electric force measuring device, is provided with an external thread, the end of the pull rod, which is far away from the electric force measuring device, is provided with a flat notch, the joint is provided with a guide hole with the same cross section as the flat notch, the end of the pull rod, which is far away from the electric force measuring device, is inserted in the guide hole, the force measuring mechanism further comprises a force measuring bolt, the force measuring bolt is in threaded connection with the pull rod, and the force measuring bolt.

Through adopting above-mentioned technical scheme, twist and move the measuring force bolt and can the time pull rod take place relative slip with the joint along the length direction of self, and when not twisting and moving the measuring force bolt, the pull rod can keep relative static with the joint, and the operating personnel fine adjustment lifting hook of being convenient for can keep certain pulling force to the pulling force of valve rod simultaneously, makes the pulling force that the electricity measurer surveyed more accurate.

The present invention may be further configured in a preferred embodiment as: and a second pressure gauge is also arranged on the peripheral surface of the second seal tank and communicated with the second seal tank.

Through adopting above-mentioned technical scheme, when letting in gas second seal pot, can audio-visual understanding the atmospheric pressure in the second seal pot, treat to make solenoid valve and first seal pot intercommunication again after atmospheric pressure in the second seal pot is the same with the atmospheric pressure in the pressure vessel, the operating personnel of being convenient for controls detection device.

The present invention may be further configured in a preferred embodiment as: the return pipe is a hose.

By adopting the technical scheme, the joint can not be limited by the return pipe, so that the joint can move at any angle, the detection device is convenient to be matched with safety valves of different models, and the adaptability of the detection device is improved.

The present invention may be further configured in a preferred embodiment as: the exhaust pipe is fixedly arranged on the first sealing tank and communicated with the first sealing tank, and a first air valve is arranged in the exhaust pipe.

Through adopting above-mentioned technical scheme, if the interior storage of pressure vessel is when toxic gas, detect the back that finishes at the relief valve, insert in the neutralizing solution and open first air valve with the one end that the first seal pot was kept away from to the blast pipe, later let in the air from the intake pipe, discharge the toxic gas in the first seal pot to the neutralizing solution in the reaction, avoid causing the injury to operating personnel.

The present invention may be further configured in a preferred embodiment as: the solenoid valve sets up to three-position three way solenoid valve, and the one end of solenoid valve communicates with the intake pipe all the time, and the other end of solenoid valve can communicate with first seal pot, also can communicate with the second seal pot, also can be closed.

Through adopting above-mentioned technical scheme, if the interior storage of pressure vessel is when toxic gas, detect the back that finishes at the relief valve, and when letting in air in to first seal pot, the adjustment solenoid valve makes the one end that the intake pipe was kept away from to the solenoid valve closed, avoids the toxic gas in first seal pot and the second seal pot to leak from the solenoid valve, injures operating personnel.

The present invention may be further configured in a preferred embodiment as: a second air valve is communicated between the return pipe and the joint.

Through adopting above-mentioned technical scheme, if the interior storage of pressure vessel is when toxic gas, detect the back that finishes at the relief valve, close the second air valve, and will connect the one end of keeping away from the second seal pot and insert in the neutralization solution and open the second air valve, later the adjustment solenoid valve, the one end and the second seal pot intercommunication that the intake pipe was kept away from to the solenoid valve, later to letting in the air in the second seal pot, place the interior reaction of neutralization solution with the toxic gas idol in the second seal pot, avoid causing the injury to operating personnel.

To sum up, the utility model discloses a following at least one useful technological effect:

1. through detection device's setting, both can measure whether the relief valve leaks gas, also can measure whether up to standard of the opening pressure value of relief valve, need not pull down the relief valve when measuring the opening pressure of relief valve moreover for the mill can not be for measuring the relief valve and the shut down, improves production efficiency.

2. Through the setting of force measuring mechanism, when measuring the cracking pressure of relief valve, connect with the valve rod hookup of lifting hook and relief valve earlier, later pulling the pull rod, open the valve rod of relief valve, because the atmospheric pressure in the joint is the same with the atmospheric pressure in the pressure vessel this moment, when the relief valve was opened, the pressure that the electricity dynamograph measured was just the cracking pressure value of relief valve.

3. Through the arrangement of the exhaust pipe, the first air valve and the second air valve, when toxic gas is stored in the pressure container, the toxic gas in the first sealing tank and the second sealing tank can be prevented from leaking, and further, the harm to operators is avoided; after the detection is finished, the toxic gas in the first sealing tank and the second sealing tank can be neutralized, so that the environment pollution is avoided.

Drawings

FIG. 1 is a schematic view of the overall structure of the present embodiment;

fig. 2 is a schematic cross-sectional view of a joint.

Reference numerals: 11. a pressure vessel; 12. a safety valve; 121. a safety valve exhaust port; 122. a valve stem; 123. a hoisting ring; 124. a safety valve stem port; 2. a detection device; 21. an air inlet pipe; 22. an electromagnetic valve; 23. a first seal pot; 231. a first pressure gauge; 232. an exhaust pipe; 233. a first air valve; 24. a second seal tank; 241. a second pressure gauge; 25. a return pipe; 26. a joint; 261. a guide hole; 27. a second air valve; 3. a force measuring mechanism; 31. a pull rod; 311. flat cutting; 32. a hook; 33. an electrical force measurer; 34. a display; 35. a force measuring bolt.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, the present embodiment proposes a detection apparatus for a safety valve of a pressure vessel, which includes an air inlet pipe 21, an electromagnetic valve 22, a first seal tank 23, a second seal tank 24, a return pipe 25, a second air valve 27, a joint 26, and a force measuring mechanism 3, wherein the air inlet pipe 21 is communicated with an exhaust port of a safety valve 12.

The electromagnetic valve 22 is a three-position three-way electromagnetic valve 22, the electromagnetic valve 22 has A, O, P three interfaces, and has a left, middle and right three positions, wherein the interface A is communicated with one end of the air inlet pipe 21 far away from the exhaust port of the safety valve 12, the interface O is communicated with the first seal tank 23, and the interface P is communicated with the second seal tank 24. A, O, P are not in communication with each other when the solenoid valve 22 is in the neutral position; when the electromagnetic valve 22 is in the left position, the port A is communicated with the port O; when the solenoid valve 22 is in the right position, port A communicates with port P.

An exhaust pipe 232 is welded on one side, away from the electromagnetic valve 22, of the first seal tank 23, the exhaust pipe 232 is communicated with the first seal tank 23, one end, away from the first seal tank 23, of the exhaust pipe 232 is communicated with the atmosphere, and a first air valve 233 is arranged in the exhaust pipe 232. One side of the first seal tank 23, which is far away from the electromagnetic valve 22, is further communicated with a first pressure gauge 231, and the first pressure gauge 231 is communicated with the first seal tank 23. One side of the second seal tank 24, which is far away from the electromagnetic valve 22, is communicated with a second pressure gauge 241, and the second pressure gauge 241 is communicated with the second seal tank 24.

One end of the return pipe 25 communicates with the second seal tank 24, and the other end of the return pipe 25 communicates with the joint 26 through a second air valve 27. The return pipe 25 is a hose, and may be made of rubber.

Referring to fig. 2, the connector 26 is hollow, and the end of the connector 26 away from the return pipe 25 is communicated with the valve stem 122 of the safety valve 12. The force measuring mechanism 3 is arranged in the joint 26, the force measuring mechanism 3 comprises a pull rod 31, a hook 32, an electric force measuring device 33, a display 34 and a force measuring bolt 35, and the pull rod 31 and a valve rod 122 of the safety valve 12 are coaxially arranged. The pull rod 31 penetrates through one end of the joint 26 far away from the safety valve 12, and the pull rod 31 is connected with the joint 26 in a sliding mode along the length direction of the pull rod 31.

The end of the pull rod 31 far away from the safety valve 12 is provided with an external thread, the end of the pull rod 31 far away from the external thread is also provided with a flat notch 311, the end of the joint 26 far away from the safety valve 12 is provided with a guide hole 261, and the cross section of the guide hole 261 is the same as that of the position of the pull rod 31 provided with the flat notch 311. The end of the pull rod 31 remote from the safety valve 12 is inserted into the guide hole 261. The load bolt 35 is screwed to the end of the tie rod 31 remote from the safety valve 12, and the load bolt 35 abuts against the end of the joint 26 remote from the safety valve 12.

An electric power tester 33 is fixedly connected to one end of the pull rod 31 close to the safety valve 12 through screws, a display 34 is fixedly connected to the outer peripheral surface of the joint 26 through screws, and the electric power tester 33 is electrically connected with the display 34. The display 34 reads the tension value applied to the electric force measuring device 33.

The end of the lifting hook 32 far away from the hook part is in universal connection with the end of the electric power measurer 33 far away from the pull rod 31 through a universal ball, the lifting ring 123 is welded at one end, close to the joint 26, of the valve rod 122 of the safety valve 12 through spot welding, and the hook part of the lifting hook 32 is hooked with the lifting ring 123.

The implementation principle of the embodiment is as follows:

when measuring whether the safety valve 12 leaks air, firstly communicating the air inlet pipe 21 with an air outlet of the safety valve 12, then hooking the lifting hook 32 with a lifting ring 123 on the safety valve 12, then communicating the joint 26 with a valve rod 122 of the safety valve 12, then closing the second air valve 27, simultaneously controlling the electromagnetic valve 22 to enable the electromagnetic valve 22 to be positioned at the right position, further enabling the air inlet pipe 21 to be communicated with the second sealing tank 24, observing the second pressure gauge 241 at the moment, if the display value of the second pressure gauge 241 is increased, representing that the safety valve 12 leaks air, and calculating whether the safety valve 12 meets the regulations according to the increased value of the second pressure gauge 241 and the volume of the second sealing tank 24.

If the safety valve 12 is airtight, the opening pressure of the safety valve 12 can be measured continuously, at this time, the second air valve 27 is opened, the pull rod 31 is pulled to open the safety valve 12, when the indication value of the second pressure gauge 241 is the same as the pressure in the pressure container 11, the pull rod 31 is loosened to reset the valve rod 122, the electromagnetic valve 22 is controlled to be in the left position, the air inlet pipe 21 is communicated with the first sealing tank 23, the force measuring bolt 35 is screwed, the first pressure gauge 231 is observed at any time, the force measuring bolt 35 is stopped being screwed when the indication value of the first pressure gauge 231 changes, at this time, the reading of the display 34 is observed, and the reading of the display 34 is the opening pressure value of the safety valve 12.

If the toxic gas is stored in the pressure container 11, after the measurement is finished, the second air valve 27 is closed and the electromagnetic valve 22 is controlled, so that the electromagnetic valve 22 is positioned at the middle position, then the force measuring bolt 35 is screwed, the valve rod 122 is reset, and then the joint 26 and the air inlet pipe 21 are detached from the safety valve 12; then the joint 26 and the exhaust pipe 232 are led into the neutralization solution, and then the air inlet pipe 21 is communicated with an exhaust port of the blower; at this time, the first air valve 233 is opened and the electromagnetic valve 22 is controlled to make the electromagnetic valve 22 in the left position, so that the toxic gas in the first sealing tank 23 can be discharged into the neutralizing solution for neutralization; then the second control valve is opened and the electromagnetic valve 22 is controlled, and the electromagnetic valve 22 is at the right position, so that the toxic gas in the second seal tank 24 can be discharged into the neutralizing solution for neutralization.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A detection device for a safety valve of a pressure container is characterized by comprising an air inlet pipe (21), an electromagnetic valve (22), a first sealing tank (23), a second sealing tank (24), a return pipe (25) and a connector (26), wherein the air inlet pipe (21) is communicated with an exhaust port of a safety valve (12), one end of the electromagnetic valve (22) is communicated with one end of the air inlet pipe (21) far away from the safety valve (12), the other end of the electromagnetic valve (22) is respectively communicated with the first sealing tank (23) and the second sealing tank (24), one end of the return pipe (25) is communicated with the second sealing tank (24), the other end of the return pipe (25) is communicated with the connector (26), one end of the connector (26) far away from the return pipe (25) is communicated with a valve rod (122) port of the safety valve (12), a first pressure gauge (231) is communicated in the first sealing tank (23), and a force measuring mechanism (3), the force measuring mechanism (3) is connected with a valve rod (122) of the safety valve (12).

2. The inspection device for a safety valve of a pressure vessel according to claim 1, wherein: force-measuring mechanism (3) are including pull rod (31), lifting hook (32), electricity dynamometer (33) and display (34), pull rod (31) and valve rod (122) coaxial setting of relief valve (12), and pull rod (31) pass and connect (26) the one end of keeping away from relief valve (12), pull rod (31) slide with joint (26) along the length direction of self and be connected, electricity dynamometer (33) fixed connection is in the one end that pull rod (31) are close to relief valve (12), one end that hook portion was kept away from in lifting hook (32) and electricity dynamometer (33) keep away from the one end universal connection of pull rod (31), lifting hook (32) and valve rod (122) hook joint of relief valve (12), display (34) fixed connection is on the periphery face that connects (26), and electricity dynamometer (33) are connected with display (34) electricity.

3. The inspection device for a safety valve of a pressure vessel according to claim 2, wherein: the electric measuring device is characterized in that an external thread is formed in one end, far away from the electric measuring device (33), of the pull rod (31), a flat notch (311) is formed in one end, far away from the electric measuring device (33), of the pull rod (31), a guide hole (261) with the same cross section as the flat notch (311) is formed in the joint (26), one end, far away from the electric measuring device (33), of the pull rod (31) is inserted into the guide hole (261), the force measuring mechanism (3) further comprises a force measuring bolt (35), the force measuring bolt (35) is in threaded connection with the pull rod (31), and the force measuring bolt (35) is abutted to the outer peripheral face of the joint (26).

4. The inspection device for a safety valve of a pressure vessel according to claim 3, wherein: and a second pressure gauge (241) is further arranged on the outer peripheral surface of the second sealing tank (24), and the second pressure gauge (241) is communicated with the second sealing tank (24).

5. The inspection apparatus for a safety valve of a pressure vessel according to any one of claims 1 to 4, wherein: the return pipe (25) is a hose.

6. The inspection device for a safety valve of a pressure vessel according to claim 5, wherein: an exhaust pipe (232) is fixedly arranged on the first sealing tank (23), the exhaust pipe (232) is communicated with the first sealing tank (23), and a first air valve (233) is arranged in the exhaust pipe (232).

7. The inspection device for a safety valve of a pressure vessel according to claim 6, wherein: the electromagnetic valve (22) is set to be a three-position three-way electromagnetic valve (22), one end of the electromagnetic valve (22) is always communicated with the air inlet pipe (21), and the other end of the electromagnetic valve (22) can be communicated with the first sealing tank (23), can also be communicated with the second sealing tank (24) and can also be closed.

8. The inspection device for a safety valve of a pressure vessel according to claim 7, wherein: a second air valve (27) is communicated between the return pipe (25) and the joint (26).