CN215334677U - Pressure relief structure of low temperature safety valve - Google Patents
Pressure relief structure of low temperature safety valve Download PDFInfo
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- CN215334677U CN215334677U CN202121449618.8U CN202121449618U CN215334677U CN 215334677 U CN215334677 U CN 215334677U CN 202121449618 U CN202121449618 U CN 202121449618U CN 215334677 U CN215334677 U CN 215334677U
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- pressure release
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Abstract
The utility model relates to the technical field of pressure relief of safety valves, in particular to a pressure relief structure of a low-temperature safety valve, which is used for solving the problem that the safety valve in the prior art does not have a pressure relief function, so that a valve body or equipment connected with the valve body can be damaged due to overlarge fluid pressure. The valve comprises a valve body, a valve cover, a valve seat, a valve top and a pressure relief groove, wherein the valve top is also provided with a liquid inlet pressure relief hole and a liquid outlet pressure relief hole which are communicated with the pressure relief groove, the liquid inlet pressure relief hole and the liquid outlet pressure relief hole are both communicated with the inside of the valve body, a pressure relief pad capable of sealing the liquid inlet pressure relief hole and the liquid outlet pressure relief hole is arranged in the pressure relief groove, the top surface of the pressure relief pad is provided with a rebound mechanism extending into the valve cover, and a pressure relief gap is reserved between the rebound mechanism and the valve top. When the pressure of fluid flowing through the valve body is overlarge, the rebound mechanism can extrude the pressure relief pad until the liquid inlet pressure relief hole and the liquid outlet pressure relief hole are communicated with the pressure relief gap, so that the purpose of pressure relief can be achieved.
Description
Technical Field
The utility model relates to the technical field of pressure relief of safety valves, in particular to a pressure relief structure of a low-temperature safety valve.
Background
The safety valve is a special valve which is in a normally closed state under the action of external force, when the medium pressure in equipment or a pipeline rises to exceed a specified value, the medium pressure in the pipeline or the equipment is prevented from exceeding the specified value by discharging the medium to the outside of the system, the safety valve belongs to the automatic valve class, is mainly used for boilers, pressure containers and pipelines, controls the pressure to be not more than the specified value, plays an important role in protecting personal safety and equipment operation, and can be used only through a pressure test.
The relief valve among the prior art includes the valve gap, a spring, the valve body, the case, the disk seat, the valve body is connected to disk seat upper end integral type, the valve body upper end is through lock nut installation valve gap, the disk seat top is arranged in to the inside case that is equipped with of valve body, install spring washer and case gland between case and the disk seat in proper order, the case passes spring washer and case gland and disk seat fixed through the screw, be equipped with the spring between case and the valve gap, valve body upper portion installation copper screw, the disk seat integral type valve body of this relief valve, lock nut installation valve gap is passed through to the valve body upper end, structural design is reasonable, it is durable, install spring washer between disk seat and the case in proper order, the sealing washer, the case gland, the leakproofness is strong, effectively prevent to leak gas when not reaching opening pressure, the security is high.
However, the above-described safety valve does not have a pressure relief function when the pressure of the fluid flowing through the valve body is excessive, so that the valve body or equipment connected to the valve body may be damaged due to the excessive pressure of the fluid. Therefore, there is a need for a pressure relief structure of a safety valve that can automatically relieve pressure, thereby protecting a valve body and other equipment.
SUMMERY OF THE UTILITY MODEL
Based on the above problems, the utility model provides a pressure relief structure of a low-temperature safety valve, which is used for solving the problem that the safety valve in the prior art does not have a pressure relief function, so that a valve body or equipment connected with the valve body can be damaged due to overlarge fluid pressure. When the pressure of fluid flowing through the valve body is overlarge, the rebound mechanism can extrude the pressure relief pad until the liquid inlet pressure relief hole and the liquid outlet pressure relief hole are communicated with the pressure relief gap, so that part of the fluid can enter the valve cover through the liquid inlet pressure relief hole, the purpose of pressure relief can be achieved, and the degree of damage to the valve body or equipment connected with the valve body due to overlarge fluid pressure can be reduced.
The utility model specifically adopts the following technical scheme for realizing the purpose:
the utility model provides a pressure release structure of low temperature safety valve, includes the valve body, install valve gap and disk seat on the valve body, install the valve top in the valve body, through the sealing member contact between valve top and disk seat, open on the upper portion of valve top has the pressure release groove, still open on the valve top have with the feed liquor pressure release hole of pressure release groove intercommunication with go out liquid pressure release hole, feed liquor pressure release hole with go out liquid pressure release hole all communicate with each other with the inside of valve body, install the pressure release pad that can seal feed liquor pressure release hole and go out liquid pressure release hole in the pressure release groove, the rebound mechanism that extends to in the valve gap is installed to the top surface that the pressure release filled up, leave the pressure release clearance between rebound mechanism and valve top, the valve body can be followed to the valve top and reciprocated.
The preferable structure of the valve top is as follows: the valve top includes from the top down slip section and the pressure release section of mutual shaping as an organic whole, the diameter of slip section is greater than the pressure release section, the slip section contacts with the valve body, feed liquor pressure release hole and play liquid pressure release hole are all opened on the pressure release section.
Preferably, the liquid inlet pressure relief hole and the liquid outlet pressure relief hole are oppositely arranged.
Preferably, there are a plurality of slip protruding stupexes along its length direction integrated into one piece on the surface of slip section, it has a plurality of slip strip grooves to open in the valve body, the protruding stupefied that slides is located the slip strip inslot and can slide in the slip strip inslot.
Preferably, the valve body is connected with an outlet connecting pipe through a nut, and a precipitation mechanism is installed in the valve body.
Preferably, the sedimentation mechanism comprises a sedimentation cylinder, and the inner surface of the sedimentation cylinder is provided with a plurality of sedimentation strip grooves along the length direction.
Preferably, the side of the sedimentation cylinder is integrally formed with a disassembly handle, and the disassembly handle is provided with a disassembly groove.
Preferably, the cover pad is still installed to the upper end of valve gap, rebound mechanism is including installing the valve rod on the cover pad, the lower extreme and the pressure release pad contact of valve rod, the spring holder is installed down to the lower part of valve rod, and the spring holder is installed on upper portion, install return spring down between spring holder and the last spring holder, the valve rod can be followed to lower spring holder and reciprocated.
The utility model has the following beneficial effects:
(1) when the pressure of fluid flowing through the valve body is overlarge, the rebound mechanism can extrude the pressure relief pad until the liquid inlet pressure relief hole and the liquid outlet pressure relief hole are communicated with the pressure relief gap, so that part of the fluid can enter the valve cover through the liquid inlet pressure relief hole, the purpose of pressure relief can be achieved, and the degree of damage to the valve body or equipment connected with the valve body due to overlarge fluid pressure can be reduced.
(2) When the valve top moves, the sliding convex edge and the sliding strip groove move relatively, so that the sliding convex edge can play a role in guiding the valve top, and the valve top can move more stably.
(3) When the fluid flows through the precipitation tube, impurities in the fluid can be slowly precipitated in the precipitation strip groove, when the impurities in the precipitation strip groove reach a certain amount, the nut is detached from the valve body and the outlet connecting tube, and then the precipitation tube is detached from the valve body to be cleaned and is installed in the valve body, so that some impurities in the fluid can be cleaned, and the valve body is prevented from being blocked.
(4) According to the utility model, the side surface of the sedimentation cylinder is integrally formed with the dismounting handle, the dismounting groove is formed in the dismounting handle, the sedimentation cylinder and the valve body can be connected through threads or directly clamped in the valve body, and when the sedimentation cylinder needs to be dismounted, the dismounting handle and the dismounting groove are grasped, so that the sedimentation cylinder can be dismounted and mounted more easily.
Drawings
FIG. 1 is a schematic front sectional view of the present invention;
FIG. 2 is a schematic view in partial elevation in cross-section of the pressure relief pad of the present invention when uncompressed;
FIG. 3 is a schematic view of a partial front cross-sectional view of a pressure relief gasket of the present invention as compressed;
FIG. 4 is a schematic front sectional view of the valve tip of the present invention;
FIG. 5 is a schematic diagram of the front cross-sectional structure of a precipitation cartridge of the present invention;
FIG. 6 is a schematic side sectional view of a settling cylinder according to the present invention;
reference numerals: 1 valve seat, 2 sealing members, 3 pressure relief pads, 4 valve tops, 41 pressure relief sections, 42 sliding sections, 5 valve bodies, 6 valve covers, 7 lower spring seats, 8 valve rods, 9 return springs, 10 upper spring seats, 11 cover pads, 12 sedimentation cylinders, 121 sedimentation strip grooves, 13 nuts, 14 outlet connecting pipes, 15 liquid inlet pressure relief holes, 16 pressure relief grooves, 17 liquid outlet pressure relief holes, 18 sliding convex ribs, 19 disassembly handles and 191 disassembly grooves.
Detailed Description
For a better understanding of the present invention by those skilled in the art, the present invention will be described in further detail below with reference to the accompanying drawings and the following examples.
Example 1:
as shown in fig. 1-6, a pressure relief structure of a low-temperature safety valve comprises a valve body 5, a valve cover 6 and a valve seat 1 are installed on the valve body 5, a valve top 4 is installed in the valve body 5, the valve top 4 is in contact with the valve seat 1 through a sealing element 2, a pressure relief groove 16 is formed in the upper portion of the valve top 4, a liquid inlet pressure relief hole 15 and a liquid outlet pressure relief hole 17 which are communicated with the pressure relief groove 16 are further formed in the valve top 4, the liquid inlet pressure relief hole 15 and the liquid outlet pressure relief hole 17 are both communicated with the inside of the valve body 5, a pressure relief pad 3 capable of sealing the liquid inlet pressure relief hole 15 and the liquid outlet pressure relief hole 17 is installed in the pressure relief groove 16, a rebound mechanism extending into the valve cover 6 is installed on the top surface of the pressure relief pad 3, a pressure relief gap is reserved between the rebound mechanism and the valve top 4, and the valve top 4 can move up and down along the valve body 5.
Preferably, a cover gasket 11 is further installed at the upper end of the valve cover 6, the rebound mechanism comprises a valve rod 8 installed on the cover gasket 11, the lower end of the valve rod 8 is in contact with the pressure relief gasket 3, a lower spring seat 7 is installed at the lower part of the valve rod 8, an upper spring seat 10 is installed at the upper part of the valve rod, a return spring 9 is installed between the lower spring seat 7 and the upper spring seat 10, and the lower spring seat 7 can move up and down along the valve rod 8.
The preferred structure of the valve top 4 is: the valve top 4 comprises a sliding section 42 and a pressure relief section 41 which are formed into a whole from top to bottom, the diameter of the sliding section 42 is larger than that of the pressure relief section 41, the sliding section 42 is in contact with the valve body 5, and the liquid inlet pressure relief hole 15 and the liquid outlet pressure relief hole 17 are both formed in the pressure relief section 41.
The working principle is as follows: when fluid contacts with the valve top 4 through the valve seat 1, the fluid gives a pressure to the valve top 4, the valve top 4 starts to move along the direction of a return spring 9 in a valve body 5 after receiving the pressure of the fluid, at the moment, the sealing member 2 does not seal between the valve top 4 and the valve seat 1 any more, the fluid flows out through a gap between the valve top 4 and the valve seat 1, wherein the sealing member 2 comprises a plurality of sealing blocks which are uniformly arranged, a sealing strip is connected among the sealing blocks, a plurality of sealing holes are uniformly formed in the top surface of the valve seat 1, the sealing blocks comprise sealing bodies and sealing bulges which are mutually formed into a whole, the sealing strip is connected among the sealing bodies, the sealing bulges are positioned in the sealing holes, the valve top 4 can drive the pressure relief pad 3 to move towards the direction of the valve rod 8 in the moving process, the valve rod 8 can extrude the pad 3, the pressure relief pad 3 can be compressed after being extruded, and after the pressure relief pad 3 is compressed to a certain degree, feed liquor pressure release hole 15 and play liquid pressure release hole 17 all communicate with the pressure release clearance, and some fluid will be through feed liquor pressure release hole 15, pressure release clearance entering valve gap 6 in like this, just so can alleviate the fluid pressure that valve body 5 received, reach the purpose of pressure release to can reduce because fluid pressure is too big and damage the degree of valve body 5 or the equipment of being connected with valve body 5.
Preferably, the liquid inlet pressure relief hole 15 and the liquid outlet pressure relief hole 17 are arranged oppositely, so that the buffering pressure relief effect can be better achieved.
Preferably, a plurality of sliding convex ridges 18 are integrally formed on the outer surface of the sliding section 42 along the length direction of the sliding section, a plurality of sliding strip grooves are formed in the valve body 5, the sliding convex ridges 18 are positioned in the sliding strip grooves and can slide in the sliding strip grooves, when the valve top 4 moves, the sliding convex ridges 18 and the sliding strip grooves move relatively, so that the sliding convex ridges 18 can play a role in guiding the valve top 4, and the valve top 4 can move more stably.
Example 2:
as shown in fig. 1-6, on the basis of the above example 1, this example shows a preferred structure for removing a part of the precipitate in the fluid: the valve body 5 is connected with an outlet connecting pipe 14 through a nut 13, a precipitation mechanism is installed in the valve body 5 and comprises a precipitation cylinder 12, and the inner surface of the precipitation cylinder 12 is provided with a plurality of precipitation strip grooves 121 along the length direction.
In this embodiment: when fluid flows through the precipitation cylinder 12, impurities in the fluid can be slowly precipitated in the precipitation strip groove 121, after the impurities in the precipitation strip groove 121 reach a certain amount, the nut 13 is detached from the valve body 5 and the outlet connecting pipe 14, then the precipitation cylinder 12 is detached from the valve body 5 and cleaned, and then the precipitation cylinder is installed in the valve body 5, so that some impurities in the fluid can be cleaned, and the valve body 5 is prevented from being blocked.
Preferably, the side of the sedimentation cylinder 12 is integrally formed with a disassembly handle 19, the disassembly handle 19 is provided with a disassembly groove 191, the sedimentation cylinder 12 and the valve body 5 can be connected by screw threads or directly clamped in the valve body 5, when the sedimentation cylinder 12 needs to be disassembled, the disassembly handle 19 and the disassembly groove 191 are grasped, and thus the sedimentation cylinder 12 can be disassembled and assembled more easily.
The above is an embodiment of the present invention. The embodiments and specific parameters in the embodiments are only for the purpose of clearly illustrating the verification process of the utility model, and are not intended to limit the scope of the utility model, which is defined by the claims.
Claims (8)
1. The utility model provides a pressure release structure of low temperature safety valve, includes valve body (5), install valve gap (6) and disk seat (1) on valve body (5), its characterized in that: install valve top (4) in valve body (5), contact through sealing member (2) between valve top (4) and disk seat (1), open on the upper portion of valve top (4) has pressure release groove (16), still open feed liquor pressure release hole (15) and play liquid pressure release hole (17) with pressure release groove (16) intercommunication on valve top (4), feed liquor pressure release hole (15) and play liquid pressure release hole (17) all communicate with each other with the inside of valve body (5), install pressure release pad (3) that can seal feed liquor pressure release hole (15) and play liquid pressure release hole (17) in pressure release groove (16), the rebound mechanism that extends to in valve gap (6) is installed to the top surface of pressure release pad (3), leave the pressure release clearance between rebound mechanism and valve top (4), valve top (4) can follow valve body (5) and reciprocate.
2. The pressure relief structure of a cryogenic safety valve according to claim 1, wherein: valve top (4) are including from the top down mutual shaping slip section (42) and pressure release section (41) as an organic whole, the diameter of slip section (42) is greater than pressure release section (41), slip section (42) and valve body (5) contact, feed liquor pressure release hole (15) and play liquid pressure release hole (17) are all opened on pressure release section (41).
3. The pressure relief structure of a cryogenic safety valve according to claim 2, wherein: the liquid inlet pressure relief hole (15) and the liquid outlet pressure relief hole (17) are arranged oppositely.
4. The pressure relief structure of a cryogenic safety valve according to claim 2, wherein: it has a plurality of slip stupexes (18) to follow its length direction integrated into one piece on the surface of slip section (42), it has a plurality of slip strip grooves to open in valve body (5), slip stupefied (18) are located the slip strip inslot and can slide in the slip strip inslot.
5. The pressure relief structure of a cryogenic safety valve according to claim 1, wherein: an outlet connecting pipe (14) is connected to the valve body (5) through a nut (13), and a precipitation mechanism is installed in the valve body (5).
6. The pressure relief structure of a cryogenic safety valve according to claim 5, wherein: the sedimentation mechanism comprises a sedimentation cylinder (12), and a plurality of sedimentation strip grooves (121) are formed in the inner surface of the sedimentation cylinder (12) along the length direction of the sedimentation cylinder.
7. The pressure relief structure of a cryogenic safety valve according to claim 6, wherein: the side of the sedimentation cylinder (12) is integrally formed with a disassembly handle (19), and the disassembly handle (19) is provided with a disassembly groove (191).
8. The pressure relief structure of a cryogenic safety valve according to claim 1, wherein: cover pad (11) are still installed to the upper end of valve gap (6), rebound mechanism is including installing valve rod (8) on cover pad (11), the lower extreme and the pressure relief of valve rod (8) fill up (3) contact, spring holder (7) down are installed to the lower part of valve rod (8), and upper portion installs spring holder (10), install return spring (9) down between spring holder (7) and last spring holder (10), valve rod (8) can be followed to spring holder (7) down and reciprocate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121449618.8U CN215334677U (en) | 2021-06-28 | 2021-06-28 | Pressure relief structure of low temperature safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121449618.8U CN215334677U (en) | 2021-06-28 | 2021-06-28 | Pressure relief structure of low temperature safety valve |
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| Publication Number | Publication Date |
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| CN215334677U true CN215334677U (en) | 2021-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121449618.8U Active CN215334677U (en) | 2021-06-28 | 2021-06-28 | Pressure relief structure of low temperature safety valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116951142A (en) * | 2023-09-19 | 2023-10-27 | 成都市和谐环保工程技术有限公司 | Air release valve for sedimentation tank air inlet pipe and air release method thereof |
-
2021
- 2021-06-28 CN CN202121449618.8U patent/CN215334677U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116951142A (en) * | 2023-09-19 | 2023-10-27 | 成都市和谐环保工程技术有限公司 | Air release valve for sedimentation tank air inlet pipe and air release method thereof |
| CN116951142B (en) * | 2023-09-19 | 2023-12-12 | 成都市和谐环保工程技术有限公司 | Air release valve for sedimentation tank air inlet pipe and air release method thereof |
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