CN115949787A - Safety valve with temperature protection and pressure protection functions - Google Patents
Safety valve with temperature protection and pressure protection functions Download PDFInfo
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- CN115949787A CN115949787A CN202211677407.9A CN202211677407A CN115949787A CN 115949787 A CN115949787 A CN 115949787A CN 202211677407 A CN202211677407 A CN 202211677407A CN 115949787 A CN115949787 A CN 115949787A
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Abstract
The application belongs to the field of pressure container or pressure-bearing equipment protection, and relates to a safety valve with temperature protection and pressure protection functions, which comprises a static valve body, a movable valve body and a valve body driving mechanism; the valve body driving mechanism comprises a fixing piece, a driving piece and a sealing piece; when the temperature reaches a value higher than the safe temperature value T, the hot melt in the channel inside the static valve body melts when the temperature exceeds the safe temperature value T, and the channel is opened to release gas inside the equipment; when the safety pressure value P is reached, the driving piece works and controls the fixing piece to be separated from the clamping connection with the sealing piece, after the sealing piece is separated from the clamping connection with the fixing piece, the sealing piece drives the movable valve body to move to seal the cavity, and the movable valve body and the static valve body are mutually attached. Therefore, when the temperature is high, the pressure of the equipment cannot rise too much due to the high temperature, when the pressure is released and the air is released, the air is not completely released at one time, certain safety pressure is reserved for the equipment to use, and the equipment can be used for multiple times.
Description
Technical Field
The application belongs to the field of pressure vessel or pressure-bearing equipment protection, and particularly relates to a safety valve with temperature protection and pressure protection functions.
Background
The hot melting safety valve on the hub of the airplane tire is taken as an example, and the hot melting safety valve has the main function of temperature protection, namely when the temperature of the hub exceeds a certain value, the safety valve is opened to release the pressure of the tire. The main disadvantage of this kind of safety valve is once overheated opening, can release tire internal pressure completely, and the tire pressure reduces to zero, will lead to the tire to lose support and roll function, must change and can continue to use to lead to a large amount of wastes of resource.
Therefore, how to prevent the tire pressure from decreasing to zero and protect the tire pressure so that the tire can be used repeatedly is a problem to be solved.
Disclosure of Invention
The utility model aims at providing a have temperature protection and pressure protect function's relief valve concurrently to open the problem that equipment just need be changed once among the prior art to the relief valve.
The technical scheme of the application is as follows: a safety valve with temperature protection and pressure protection functions comprises a static valve body, a movable valve body and a valve body driving mechanism; the static valve body is arranged on the equipment installation base body, the inner end of the static valve body is inserted into the equipment installation base body, the movable valve body and the static valve body are coaxially arranged, and the movable valve body is arranged corresponding to the outer end of the static valve body;
the static valve body is internally provided with a cavity which is communicated with the inside and the outside, the cavity is communicated with the inside of the equipment installation base body, and a hot melt which seals the cavity is arranged in the cavity and can be melted at a certain temperature; the movable valve body can be inserted into the cavity of the static valve body to seal the cavity;
the valve body driving mechanism comprises a fixing piece, a driving piece and a sealing piece, the sealing piece is connected with the movable valve body, the fixing piece can be clamped and matched with the sealing piece, and the static valve body and the movable valve body are separated from each other when the fixing piece is clamped and connected with the sealing piece; the driving piece is connected with the fixing piece, the driving piece can sense the pressure change at the cavity outlet and control the fixing piece to be separated from the clamping with the sealing piece after the pressure is reduced to a certain degree, and the sealing piece drives the movable valve body to move to seal the cavity after the sealing piece is separated from the clamping with the fixing piece.
Preferably, the actuator comprises a first link, a contact body and a pressure diaphragm; an inner concave cavity is formed in the movable valve body, the pressure diaphragm is coaxially arranged in the inner concave cavity, a closed cavity is formed between the pressure diaphragm and the inner concave cavity, the pressure diaphragm can move according to different pressures, the contact body is coaxially connected with the pressure diaphragm, and the contact body moves along with the pressure diaphragm; the first connecting rods are arranged at intervals along the circumferential direction of the movable valve body, one end of each first connecting rod is hinged with the contact body, and the other end of each first connecting rod is hinged with the fixing piece; the movable valve body is provided with a support, the support is arranged between the fixing piece and the contact body, the first connecting rod is hinged to the support, and the first connecting rod, the contact body and the fixing piece form a lever structure.
Preferably, a first bolt group is hinged between the first connecting rod and the contact body, a second bolt group is hinged between the first connecting rod and the fixing part, and a third bolt group is hinged between the first connecting rod and the bracket.
Preferably, the fixing member comprises an actuating block and an actuating rod; the actuating block is fixed at the outer end of the static valve body, a stop groove is formed in the actuating block, one end of the actuating rod is hinged with the driving piece, the other end of the actuating rod penetrates through the moving valve body and is inserted into the stop groove, a clamping key is arranged at one end of the actuating rod inserted into the stop groove, the clamping key is clamped and matched in the stop groove, and when the pressure at the outlet of the cavity is reduced to a certain value, the driving piece drives the clamping key on the actuating rod to be separated from the stop groove;
the pressure spring is connected between the actuating block and the wall surface of the static valve body, the stop key is clamped and matched with the sealing part, and when the clamping key is clamped and matched with the stop groove, the pressure spring is in a compressed state between the static valve body and the actuating block; when the clamping key is separated from the stop groove, the pressure spring stretches and drives the stop key to be separated from the sealing part.
Preferably, the sealing parts are arranged at intervals along the circumferential direction of the static valve body, each sealing part comprises a tension spring and a second connecting rod, a blind hole is formed in the position, corresponding to the sealing part, of the static valve body, the tension springs and the second connecting rods are inserted into the blind holes, the tension springs are located on the inner side, the second connecting rods are located on the outer side, one ends of the second connecting rods are connected with the tension springs, the other ends of the second connecting rods are fixedly connected with the movable valve body, the side walls of the second connecting rods are in clamping fit with the fixing part, and when the second connecting rods are in clamping fit with the fixing part, the tension springs are in an extending state; when the second connecting rod is separated from the fixing piece, the tension spring pulls the second connecting rod and the movable valve body to move towards the direction close to the static valve body.
Preferably, a first sealing groove is formed in the outer side wall of the static valve body, and a first sealing ring tightly attached to the equipment installation base body is arranged in the first sealing groove; a second sealing groove is formed in the inner side wall of the movable valve body, and a second sealing ring which can be tightly attached to the static valve body is arranged in the second sealing groove.
Preferably, a conical groove is formed in the front end of the static valve body corresponding to the outer side of the cavity, a conical table matched with the conical groove is arranged on the movable valve body, and the conical table is inserted into the conical groove when the static valve body is attached to the movable valve body.
The safety valve with the temperature protection function and the pressure protection function comprises a static valve body, a movable valve body and a valve body driving mechanism; the valve body driving mechanism comprises a fixing piece, a driving piece and a sealing piece; when the temperature reaches a value higher than a safe temperature value T, the hot melt in the channel inside the static valve body melts when the temperature exceeds the safe temperature value T, and the channel is opened to release gas inside the equipment; when the safety pressure value P is reached, the driving piece works and controls the fixing piece to be separated from the clamping connection with the sealing piece, after the sealing piece is separated from the clamping connection with the fixing piece, the sealing piece drives the movable valve body to move to seal the cavity, and the movable valve body and the static valve body are mutually attached. Therefore, when the temperature is high, the pressure of the equipment cannot rise too much due to the high temperature, when the pressure is released and the air is released, the air is not completely released at one time, certain safety pressure is reserved for the equipment to use, and the equipment can be used for multiple times.
Drawings
In order to more clearly illustrate the technical solutions provided by the present application, the following briefly introduces the accompanying drawings. It is to be expressly understood that the drawings described below are only illustrative of some embodiments of the invention.
FIG. 1 is a cross-sectional view of the overall structure of the present application;
FIG. 2 is a schematic view of a connection structure between a static valve body and a dynamic valve body when the safety valve is not triggered;
FIG. 3 is a schematic view of a connection structure of a static valve body and a dynamic valve body when the safety valve is triggered according to the present application;
FIG. 4 is an exploded view of the valve body and the driving member of the present application;
FIG. 5 is a schematic diagram of a deformation structure of the pressure diaphragm under different pressures according to the present application;
FIG. 6 is a schematic view of an actuator block according to the present application.
1. An equipment mounting base; 2. a first seal ring; 3. a static valve body; 4. a tension spring; 5. an actuating block; 6. a movable valve body; 7. an actuating rod; 8. a first link; 9. a contact body; 10. a pressure diaphragm; 11. a second seal ring; 12. a second link; 13. a hot melt; 14. a stop key; 15. compressing the spring; 16. a stopper groove; 17. a first bolt group; 18. a second bolt group; 19. a third bolt group; 20. a support; 21. a conical groove; 22. a truncated cone.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the embodiments of the present application.
A safety valve having both temperature protection and pressure protection functions is provided on an equipment mounting base 1 as shown in fig. 1, and the present application will be described by taking the equipment mounting base 1 as a tire as an example.
Comprises a static valve body 3, a movable valve body 6 and a valve body driving mechanism; the static valve body 3 is arranged on the equipment installation base body 1, the inner end of the static valve body 3 is inserted into the equipment installation base body 1, the movable valve body 6 and the static valve body 3 are coaxially arranged, and the movable valve body 6 is arranged corresponding to the outer end of the static valve body 3.
A cavity communicated with the inside and the outside is formed in the static valve body 3 and communicated with the inside of the equipment installation base body 1, a hot melt 13 for sealing the cavity is arranged in the cavity, and the hot melt 13 can be melted at a certain temperature; the movable valve body 6 can be inserted into the cavity of the static valve body 3 to seal the cavity.
The valve body driving mechanism comprises a supporting assembly and a limiting assembly, the supporting assembly corresponds to a fixing piece, a driving piece and a sealing piece, the sealing piece is connected with the movable valve body 6, the fixing piece can be clamped and matched with the sealing piece, and the static valve body 3 and the movable valve body 6 are separated from each other when the fixing piece and the sealing piece are clamped; the driving piece links to each other with the mounting, the driving piece can respond to the pressure variation in cavity exit and control the mounting and break away from the joint with the piece of obturating after pressure drop to certain degree, and the piece of obturating drives movable valve body 6 and removes and seals the cavity after the piece of obturating breaks away from the joint with the mounting.
The safe temperature value at the working position of the safety valve is assumed to be T, and the safe pressure value is assumed to be P.
When the temperature is lower than the safety temperature value T, the safety valve is not triggered, and the schematic diagram of the safety valve in the state is shown in figure 5. At this time, the movable valve body 6 and the static valve body 3 are separated from each other, the driving member is clamped with the fixing member, and the driving member and the fixing member are in a stable connection state, as shown in fig. 2.
When the temperature reaches a value higher than the safety temperature value T, the hot melt 13 in the internal channel of the static valve body 3 melts when the temperature exceeds the safety temperature value T, the channel is opened to release the gas in the equipment, and the internal pressure P is increased inner Continuously reducing; with internal pressure P inner Reduce, when reaching safe pressure value P, the driving piece work and control mounting and the piece that obturages break away from the joint, the piece that obturages drives movable valve body 6 and removes and seal the cavity after piece and mounting break away from the joint, movable valve body 6 laminates with quiet valve body 3 each other, as shown in figure 3, has prevented the gaseous further release in equipment, equipment internal pressure P inner Can be maintained at the set safety pressure P.
Therefore, when the tire is at high temperature, the pressure of the tire cannot rise too much due to high temperature, and when the tire is decompressed and deflated, the tire cannot be deflated completely at one time, certain safety pressure is reserved for the tire to use, and the tire can be used for multiple times.
With reference to fig. 4, preferably, the drive member comprises a first link 8, a contact body 9 and a pressure diaphragm 10; an inner concave cavity is formed in the movable valve body 6, the pressure diaphragm 10 is coaxially arranged in the inner concave cavity, a closed cavity is formed between the pressure diaphragm 10 and the inner concave cavity, the pressure diaphragm 10 can move according to different pressures, the contact body 9 is coaxially connected with the pressure diaphragm 10, and the contact body 9 moves along with the pressure diaphragm 10; the first connecting rods 8 are arranged at intervals along the circumferential direction of the movable valve body 6, one end of each first connecting rod 8 is hinged with the contact body 9, and the other end of each first connecting rod 8 is hinged with the fixing piece; be equipped with support 20 on the movable valve body 6, support 20 is located between mounting and the contact 9, first connecting rod 8 is articulated with support 20, first connecting rod 8, contact 9 and mounting form lever structure.
With reference to fig. 5, since a sealed cavity is formed between the movable valve body 6 and the pressure diaphragm 10, the pressure in the sealed cavity remains unchanged, which is assumed to be P0, when the hot melt 13 melts, the pressure in the device mounting substrate 1 is released to the outside of the movable valve body 6 through the cavity, that is, the pressure outside the pressure diaphragm 10 is P at this time inner With the pressure diaphragm 10 at P 1 In position, the pressure P inside the apparatus inner ＝P 0 -P 1 (ii) a The pressure diaphragm 10 is at P 2 In position, pressure P inside the apparatus inner ＝P 0 -P 2 . When the pressure P inside the apparatus is inner When the pressure value is reduced to the safe pressure value P, the first connecting rod 8 pulls the fixing piece to move towards the inner side of the movable valve body 6 through the lever structure, so that the fixing piece is driven to be separated from the sealing piece, and then the movable valve body 6 is attached to the static valve body 3 and seals the static valve body 3 under the driving of the sealing piece.
Preferably, a first bolt group 17 is hinged between the first connecting rod 8 and the contact body 9, a second bolt group 18 is hinged between the first connecting rod 8 and the fixing piece, and a third bolt group 19 is hinged between the first connecting rod 8 and the bracket 20, so that the installation is simple and stable.
Referring to fig. 6, preferably, the fixing member includes an actuating block 5 and an actuating rod 7; three grooves are uniformly distributed at the outer end of the static valve body 3 along the circumferential direction by 120 degrees, the actuating block 5 is fixed in the groove at the outer end of the static valve body 3, a stop groove 16 is formed in the actuating block 5, one end of the actuating rod 7 is hinged to the first connecting rod 8, the other end of the actuating rod passes through the moving valve body 6 and is inserted into the stop groove 16, a clamping key is arranged at one end of the actuating rod 7 inserted into the stop groove 16, the clamping key is clamped and matched in the stop groove 16, the width of the stop groove 16 is larger than the diameter of the actuating rod 7, and when the pressure at the outlet of the cavity is reduced to a certain value, the driving piece drives the clamping key on the actuating rod 7 to be separated from the stop groove 16.
The pressure spring 15 and the stop key 14 are arranged on the actuating block 5, the pressure spring 15 is connected between the actuating block 5 and the wall surface of the static valve body 3, the stop key 14 is in clamping fit with the sealing part, and when the stop key is in clamping fit with the stop groove 16, the pressure spring 15 is in a compressed state between the static valve body 3 and the actuating block 5; when the clamping key is separated from the stop groove 16, the pressure spring 15 stretches and drives the stop key 14 to be separated from the sealing piece.
When the first connecting rod 8 is turned over under the pulling of the contact body 9 and drives the actuating rod 7 at the other end to move towards the outside of the actuating valve body 6 under the action of the lever structure, the first connecting rod follows the internal pressure P of the equipment inner The actuating rod 7 is continuously moved towards the static valve body 3 until the safety pressure P is reached, and the catch on the actuating rod 7 is completely disengaged from the stop groove 16.
When the moving rod 7 and the actuating block 5 are completely disengaged, the actuating rod 7 can slide in the stopping groove 16, the actuating block 5 is driven to move transversely under the action of the pressure spring 15, the stopping key 14 is pushed to be separated from the sealing piece, and the engagement is simple and stable.
Preferably, the sealing parts are arranged at intervals along the circumferential direction of the static valve body 3, each sealing part comprises a tension spring 4 and a second connecting rod 12, three blind holes are uniformly distributed at 120 degrees in the circumferential direction at the outer end of the static valve body 3, the tension springs 4 and the second connecting rods 12 are inserted into the blind holes, the tension springs 4 are positioned on the inner side, the second connecting rods 12 are positioned on the outer side, one end of each second connecting rod 12 is connected with the tension spring 4, the other end of each second connecting rod 12 is connected with the movable valve body 6 integrally, the side wall of each second connecting rod 12 is in clamping fit with the actuating block 5, and when the second connecting rods 12 are in clamping fit with the actuating blocks 5, the tension springs 4 are in an extending state; when the second connecting rod 12 is separated from the actuating block 5, the tension spring 4 pulls the second connecting rod 12 and the movable valve body 6 to move towards the direction close to the static valve body 3 until the movable valve body 6 is attached to the static valve body 3 to complete sealing, and the second connecting rod 12 and the tension spring 4 are coaxially arranged to enable driving to be stable.
Preferably, a first sealing groove is formed in the outer side wall of the static valve body 3, and a first sealing ring 2 tightly attached to the equipment installation base body 1 is arranged in the first sealing groove; a second sealing groove is formed in the inner side wall of the movable valve body 6, and a second sealing ring 11 which can be tightly attached to the static valve body 3 is arranged in the second sealing groove to prevent further release of gas in the equipment.
Preferably, a conical groove 21 is formed in the front end of the static valve body 3 corresponding to the outer side of the cavity, a conical table 22 matched with the conical groove 21 is arranged on the movable valve body 6, the conical table 22 is inserted into the conical groove 21 when the static valve body 3 is attached to the movable valve body 6, and when the movable valve body 6 is attached to the static valve body 3, the conical table 22 is matched with the conical groove 21, so that a large contact area is formed between the static valve body 3 and the conical groove 21, and stable sealing is guaranteed.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (7)
1. The utility model provides a have temperature protection and pressure protect function's relief valve which characterized in that concurrently: comprises a static valve body (3), a dynamic valve body (6) and a valve body driving mechanism; the static valve body (3) is arranged on the equipment installation base body (1), the inner end of the static valve body (3) is inserted into the equipment installation base body (1), the movable valve body (6) and the static valve body (3) are coaxially arranged, and the movable valve body (6) is arranged corresponding to the outer end of the static valve body (3);
a cavity communicated with the inside and the outside is formed in the static valve body (3), the cavity is communicated with the inside of the equipment installation base body (1), a hot melt (13) for sealing the cavity is arranged in the cavity, and the hot melt (13) can be melted at a certain temperature; the movable valve body (6) can be inserted into the cavity of the static valve body (3) to seal the cavity;
the valve body driving mechanism comprises a fixing piece, a driving piece and a sealing piece, the sealing piece is connected with the movable valve body (6), the fixing piece can be clamped and matched with the sealing piece, and the static valve body (3) and the movable valve body (6) are separated when the fixing piece is clamped with the sealing piece; the driving piece is connected with the fixing piece, the driving piece can sense the pressure change at the cavity outlet and control the fixing piece to be separated from the clamping connection with the sealing piece after the pressure is reduced to a certain degree, and the sealing piece drives the movable valve body (6) to move to seal the cavity after the sealing piece is separated from the clamping connection with the fixing piece.
2. The safety valve of claim 1, which has both temperature protection and pressure protection functions, wherein: the drive comprises a first connecting rod (8), a contact body (9) and a pressure diaphragm (10); an inner concave cavity is formed in the movable valve body (6), the pressure diaphragm (10) is coaxially arranged in the inner concave cavity, a closed cavity is formed between the pressure diaphragm (10) and the inner concave cavity, the pressure diaphragm (10) can move according to different pressures, the contact body (9) is coaxially connected with the pressure diaphragm (10), and the contact body (9) moves along with the pressure diaphragm (10); the first connecting rods (8) are arranged at intervals along the circumferential direction of the movable valve body (6), one end of each first connecting rod (8) is hinged with the contact body (9), and the other end of each first connecting rod is hinged with the fixing piece; move and be equipped with support (20) on valve body (6), between mounting and contact (9) are located in support (20), first connecting rod (8) are articulated with support (20), first connecting rod (8), contact (9) and mounting form lever structure.
3. The safety valve of claim 2, which has both temperature protection and pressure protection functions, wherein: a first bolt group (17) is hinged between the first connecting rod (8) and the contact body (9), a second bolt group (18) is hinged between the first connecting rod (8) and the fixing part, and a third bolt group (19) is hinged between the first connecting rod (8) and the support (20).
4. The safety valve of claim 1, which has both temperature protection and pressure protection functions, wherein: the fixing piece comprises an actuating block (5) and an actuating rod (7); the actuating rod (7) is inserted into the stopping groove (16), one end of the actuating rod (7) is provided with a clamping key, the clamping key is clamped and matched in the stopping groove (16), and when the pressure at the outlet of the cavity is reduced to a certain value, the driving part drives the clamping key on the actuating rod (7) to be separated from the stopping groove (16);
the actuating block (5) is provided with a pressure spring (15) and a stop key (14), the pressure spring (15) is connected between the actuating block (5) and the wall surface of the static valve body (3), the stop key (14) is in clamping fit with the sealing part, and when the stop key is in clamping fit with the stop groove (16), the pressure spring (15) is in a compression state between the static valve body (3) and the actuating block (5); when the clamping key is separated from the stopping groove (16), the pressure spring (15) stretches and drives the stopping key (14) to be separated from the sealing piece.
5. The safety valve having both temperature protection and pressure protection functions as claimed in claim 1, wherein: the sealing parts are arranged at intervals along the circumferential direction of the static valve body (3), each sealing part comprises a tension spring (4) and a second connecting rod (12), a blind hole is formed in the position, corresponding to the sealing part, of the static valve body (3), each tension spring (4) and each second connecting rod (12) are inserted into the corresponding blind hole, each tension spring (4) is located on the inner side, each second connecting rod (12) is located on the outer side, one end of each second connecting rod (12) is connected with each tension spring (4), the other end of each second connecting rod (12) is fixedly connected with the corresponding movable valve body (6), the side wall of each second connecting rod (12) is in clamping fit with the corresponding fixing part, and when the corresponding second connecting rods (12) are in clamping fit with the corresponding fixing parts, the tension springs (4) are in a stretching state; when the second connecting rod (12) is separated from the fixing piece, the tension spring (4) pulls the second connecting rod (12) and the movable valve body (6) to move towards the direction close to the static valve body (3).
6. The safety valve having both temperature protection and pressure protection functions as claimed in claim 1, wherein: a first sealing groove is formed in the outer side wall of the static valve body (3), and a first sealing ring (2) tightly attached to the equipment installation base body (1) is arranged in the first sealing groove; a second sealing groove is formed in the inner side wall of the movable valve body (6), and a second sealing ring (11) which can be tightly attached to the static valve body (3) is arranged in the second sealing groove.
7. The safety valve of claim 1, which has both temperature protection and pressure protection functions, wherein: the front end of the static valve body (3) is provided with a conical groove (21) corresponding to the outer side of the cavity, the movable valve body (6) is provided with a conical frustum (22) matched with the conical groove (21), and the conical frustum (22) is inserted into the conical groove (21) when the static valve body (3) is attached to the movable valve body (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211677407.9A CN115949787A (en) | 2022-12-26 | 2022-12-26 | Safety valve with temperature protection and pressure protection functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211677407.9A CN115949787A (en) | 2022-12-26 | 2022-12-26 | Safety valve with temperature protection and pressure protection functions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115949787A true CN115949787A (en) | 2023-04-11 |
Family
ID=87290893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211677407.9A Pending CN115949787A (en) | 2022-12-26 | 2022-12-26 | Safety valve with temperature protection and pressure protection functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115949787A (en) |
-
2022
- 2022-12-26 CN CN202211677407.9A patent/CN115949787A/en active Pending
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