CN219707940U - Emergency pressure relief manhole with liquid seal - Google Patents
Emergency pressure relief manhole with liquid seal Download PDFInfo
- Publication number
- CN219707940U CN219707940U CN202320099961.7U CN202320099961U CN219707940U CN 219707940 U CN219707940 U CN 219707940U CN 202320099961 U CN202320099961 U CN 202320099961U CN 219707940 U CN219707940 U CN 219707940U
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- CN
- China
- Prior art keywords
- valve body
- valve cover
- valve
- manhole
- pressure relief
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- 239000007788 liquid Substances 0.000 title claims abstract description 18
- 238000007789 sealing Methods 0.000 claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000012528 membrane Substances 0.000 claims abstract description 6
- 230000009172 bursting Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
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- Safety Valves (AREA)
Abstract
The utility model relates to an emergency pressure relief manhole with a liquid seal, which comprises a valve body, a fixed flange, a valve cover, a balancing weight, a water sealing assembly and a limiting assembly, wherein the fixed flange is annularly arranged at the lower part of the outer side of the valve body and used for being connected with a tank body; a sealing membrane for sealing is arranged at the joint of the valve cover and the valve body; according to the utility model, the water sealing assembly is arranged at the outlet of the valve body, so that the escape channel can be effectively blocked, and the emission of VOCS is ensured not to exceed the standard.
Description
Technical Field
The utility model relates to the field of tank pressure relief, in particular to an emergency pressure relief manhole with a liquid seal.
Background
In the old device normal pressure storage tank, the valve disc counterweight type emergency pressure relief manhole is adopted in most cases. The emergency pressure relief manhole product based on the valve disc counterweight adopts a plane sealing structure, and sealing and discharging are realized through the sealing of the movable valve disc and the valve seat.
Valve disc counterweight type emergency pressure relief manhole, because small molecular gas in the tank is directly discharged to the atmosphere through tiny clearance escape of the sealing surface, VOCS discharge does not reach the standard (according to the regulation of the non-organization discharge control standard of the volatile organic compounds of GB37822-2019, the emergency pressure relief manhole is below 75% of the set pressure, and VOCS is not more than 2000 PPM). The problem that the emission of the VOCS is not up to standard due to the fact that most of emission exceeds standard due to the fact that the emission of the emergency release manhole on an old device is over standard along with the fact that the precision of a sealing surface is very difficult to solve according to the existing conditions and technologies, and the problem that the emission of the VOCS is not up to standard due to the fact that the small molecular gas in an ordinary pressure tank is directly emitted to the atmosphere through tiny gaps of the sealing surface due to the fact that the elastic ring linear sealing structure of the emergency release manhole cannot be disclosed in the prior art 202021510772.7 is solved.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provides an emergency pressure relief manhole with a liquid seal.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a take liquid seal emergency pressure release manhole, contains the valve body, the annular sets up in the outside lower part of valve body be used for with jar body connection's mounting flange, set up at the valve body top be used for sealed valve gap, set up the balancing weight at valve gap top, the annular sets up in the valve body outside and be located the valve gap under be used for preventing the water seal subassembly of micromolecular gas emission to the atmosphere, set up on the valve body inner wall be used for preventing the valve gap from receiving the limiting component that the high pressure gas influences the departure; and a sealing membrane for sealing is arranged at the joint of the valve cover and the valve body.
Preferably, the water sealing assembly comprises a water sealing groove which is annularly arranged at the outer side of the valve body and is positioned right below the valve cover, and a counterweight skirt which is annularly arranged on the valve cover and one end of which is inserted into the water sealing groove; the water level line of the water in the water seal tank is lower than the valve cover.
Preferably, the limiting component comprises a plurality of L-shaped fixing brackets arranged on the inner wall of the valve body and a plurality of bolts arranged on the valve cover in a threaded manner; one horizontal end of each L-shaped fixing support is attached to the valve cover, and through holes for bolts to pass through are correspondingly formed in the L-shaped fixing supports; the diameter of one end of each bolt is larger than that of the through holes of the L-shaped fixing support, and the bolts can move upwards in the through holes for a certain distance.
Preferably, a hoisting flange for hoisting is annularly arranged in the middle of the outer side of the valve body; the hoisting flange is positioned between the water sealing assembly and the fixing flange.
Preferably, all-welded structures are adopted between the valve body and each component.
Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
according to the utility model, the water sealing assembly is arranged at the outlet of the valve body, and the balance weight skirt edge and liquid in the water sealing groove are used for keeping the other sealing cavity to separate the escape channel, so that the VOCS emission is ensured not to exceed the standard.
Drawings
The technical scheme of the utility model is further described below with reference to the accompanying drawings:
fig. 1 is a schematic general sectional structure of an emergency pressure release manhole with a liquid seal according to the present utility model.
Wherein: 1. a valve body; 2. a fixed flange; 3. a valve cover; 4. balancing weight; 5. a water seal assembly; 51. a water seal groove; 52. a counterweight skirt; 6. a limit component; 61. an L-shaped fixing bracket; 62. a bolt; 63. a through hole; 7. a sealing membrane; 8. and (5) hoisting the flange.
Detailed Description
The utility model will be described in further detail with reference to the accompanying drawings and specific examples.
Fig. 1 is a manhole with liquid seal emergency pressure relief, which comprises a valve body 1, a fixed flange 2 annularly arranged at the lower part of the outer side of the valve body 1 and used for being connected with a tank body, a valve cover 3 arranged at the top of the valve body 1 and used for sealing, a balancing weight 4 arranged at the top of the valve cover 3, a water seal assembly 5 annularly arranged at the outer side of the valve body 1 and positioned right below the valve cover 3 and used for preventing micromolecular gas from being discharged into the atmosphere, and a limiting assembly 6 arranged on the inner wall of the valve body 1 and used for preventing the valve cover 3 from being influenced by high-pressure gas to fly out; a sealing membrane 7 for sealing is arranged at the joint of the valve cover 3 and the valve body 1; the water seal assembly 5 comprises a water seal groove 51 which is annularly arranged on the outer side of the valve body 1 and is positioned right below the valve cover 3, and a counterweight skirt edge 52 which is annularly arranged on the valve cover 3 and one end of which is inserted into the water seal groove 51; the water level line of the water in the water seal tank 51 is lower than the valve cover 3; the limiting assembly 6 comprises a plurality of L-shaped fixing brackets 61 arranged on the inner wall of the valve body 1 and a plurality of bolts 62 arranged on the valve cover 3 in a threaded manner; one horizontal end of the L-shaped fixing brackets 61 is attached to the valve cover 3, and through holes 63 for the bolts 62 to pass through are correspondingly formed in the L-shaped fixing brackets; the plurality of bolts 62 have one end with a diameter larger than that of the through holes 63 of the plurality of L-shaped fixing brackets 61 and are movable upward within the through holes 63 by a certain distance.
Further, a hoisting flange 8 for hoisting is annularly arranged in the middle of the outer side of the valve body 1; the lifting flange 8 is positioned between the water seal assembly 5 and the fixed flange 2, so that workers can conveniently lift and install the water seal assembly to the top of the tank body.
Further, all welded structures are adopted between the valve body 1 and each component, so that the valve is firmer and long in service life.
When in use, the utility model is characterized in that: the valve body 1 is arranged at the top of the normal pressure tank through the fixing flange 2, then liquid is injected into the water seal tank 51, one end of the counterweight skirt 52 on the valve cover 3 just dips into the liquid, when the pressure in the tank rises but is lower than the set discharge pressure by 75%, the pretightening force of the valve cover 3 and the valve body 1 can be reduced, micromolecular gas in the tank can escape through a tiny gap between the sealing membrane 7 and the valve body 1, the counterweight skirt 52 on the valve cover 3 and the liquid in the water seal tank 51 are utilized to keep the escape passage, VOCS discharge is ensured not to exceed standard, when the pressure in the tank rises to be higher than the set pressure, the valve cover 3 is pushed to be opened to remove the gas in the tank, at the moment, one end of the bolt 62 drives the bolt 62 to rise, and the end of the bolt 62 moves in the through hole 63 of the L-shaped fixing support 61, the opening amplitude of the valve cover 3 is limited because the diameter of one end of the bolt 62 is larger than the diameter of the through hole 63 of the L-shaped fixing support 61, the pressure in the tank is prevented from bursting the pressure in the tank to fly the valve cover 3, at the moment, the high pressure in the tank can push the valve cover 3 and the skirt 52 to be pushed by the high pressure in the tank, or the counterweight gas is utilized to blow the liquid in the tank to complete the emergency discharge, and the emergency discharge is not influenced.
The foregoing is merely a specific application example of the present utility model, and the protection scope of the present utility model is not limited in any way. All technical schemes formed by equivalent transformation or equivalent substitution fall within the protection scope of the utility model.
Claims (5)
1. The utility model provides a take liquid seal emergency pressure release manhole which characterized in that: the device comprises a valve body, a fixed flange, a valve cover, a balancing weight, a water sealing assembly and a limiting assembly, wherein the fixed flange is annularly arranged at the lower part of the outer side of the valve body and used for being connected with a tank body, the valve cover is arranged at the top of the valve body and used for sealing, the balancing weight is arranged at the top of the valve cover, the water sealing assembly is annularly arranged at the outer side of the valve body and is positioned right below the valve cover and used for preventing micromolecular gas from being discharged into the atmosphere, and the limiting assembly is arranged on the inner wall of the valve body and used for preventing the valve cover from being influenced by high-pressure gas to fly out; and a sealing membrane for sealing is arranged at the joint of the valve cover and the valve body.
2. The emergency pressure relief manhole with liquid seal of claim 1, wherein: the water sealing assembly comprises a water sealing groove which is annularly arranged on the outer side of the valve body and is positioned right below the valve cover, and a counterweight skirt edge which is annularly arranged on the valve cover and one end of which is inserted into the water sealing groove; the water level line of the water in the water seal tank is lower than the valve cover.
3. The emergency pressure relief manhole with liquid seal of claim 2, wherein: the limiting component comprises a plurality of L-shaped fixing brackets arranged on the inner wall of the valve body and a plurality of bolts arranged on the valve cover in a threaded manner; one horizontal end of each L-shaped fixing support is attached to the valve cover, and through holes for bolts to pass through are correspondingly formed in the L-shaped fixing supports; the diameter of one end of each bolt is larger than that of the through holes of the L-shaped fixing support, and the bolts can move upwards in the through holes for a certain distance.
4. A manhole with liquid tight emergency pressure relief according to any of claims 2-3, characterized in that: a hoisting flange for hoisting is annularly arranged in the middle of the outer side of the valve body; the hoisting flange is positioned between the water sealing assembly and the fixing flange.
5. The emergency pressure relief manhole with liquid seal of claim 4, wherein: and all-welded structures are adopted between the valve body and each component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320099961.7U CN219707940U (en) | 2023-02-02 | 2023-02-02 | Emergency pressure relief manhole with liquid seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320099961.7U CN219707940U (en) | 2023-02-02 | 2023-02-02 | Emergency pressure relief manhole with liquid seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219707940U true CN219707940U (en) | 2023-09-19 |
Family
ID=87983083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320099961.7U Active CN219707940U (en) | 2023-02-02 | 2023-02-02 | Emergency pressure relief manhole with liquid seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219707940U (en) |
-
2023
- 2023-02-02 CN CN202320099961.7U patent/CN219707940U/en active Active
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