Shockproof built-in safety valve

Abstract

The shockproof built-in safety valve comprises a cylindrical valve body, the valve body is connected to a base in a threaded mode, an air inlet channel and a supporting groove are formed in the base, a supporting sleeve is arranged in the supporting groove, and a pressed hole is formed in the supporting sleeve; a connecting cover is in threaded connection with the interior of the valve body, and low-temperature melting point alloy is contained in the connecting cover. A pressure relief chamber communicated with the pressure bearing hole is formed between the connecting cover and the valve body, exhaust holes are formed in the periphery of the valve body, and the pressure relief chamber is communicated with the outside through the exhaust holes. A sealing part is arranged in the supporting groove and comprises a sealing plate used for isolating the air inlet channel from the pressed hole, the sealing plate comprises a sealing part which is opposite to the pressed hole and is prone to breakage, a moving part with one end abutting against the sealing part is arranged in the pressed hole, and the other end of the moving part is supported by low-temperature melting point alloy. And a plurality of communicating holes through which the low-temperature melting point alloy flows out are formed in the side wall of the connecting cover.

Description

Technical Field

[0001] The invention relates to a shockproof built-in safety valve, belonging to the field of valves. Background Art

[0002] A safety valve is a special valve whose opening and closing parts are normally closed under the action of external forces. When the medium pressure in the equipment or pipeline exceeds the specified value, the medium is discharged to the outside of the system to prevent the medium pressure in the pipeline or equipment from exceeding the specified value, so that it will not rupture when an accident occurs due to abnormal increase in atmospheric temperature caused by fire, etc.

[0003] Existing safety valves are generally affected by environmental vibrations, causing the spring and the sealing ring to become misaligned, and then the sealing ring slides out of the sealing position. The safety valve using low-temperature melting point alloys has a low air pressure, which prevents the low-temperature melting point alloy from flowing out of the outflow hole, causing the safety valve to fail. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art and to provide a shockproof built-in safety valve.

[0005] The shockproof built-in safety valve comprises a cylindrical valve body, the valve body is threadedly connected to a base, an air inlet channel and a support groove are provided on the base, a support sleeve is provided in the support groove, a pressure hole is formed in the support sleeve; a connecting cover is threadedly connected to the valve body, and a low-temperature melting point alloy is accommodated in the connecting cover; a pressure relief chamber connected to the pressure hole is formed between the connecting cover and the valve body, an exhaust hole is provided on the periphery of the valve body, and the pressure relief chamber is connected to the outside through the exhaust hole; a sealing component is provided in the support groove, the sealing component comprises a sealing plate for isolating the air inlet channel from the pressure hole, the sealing plate comprises a sealing portion which is opposite to the pressure hole and is easy to break, a moving portion whose one end abuts against the sealing portion is provided in the pressure hole, the other end of the moving portion is supported by the low-temperature melting point alloy, and a plurality of connecting holes for the outflow of the low-temperature melting point alloy are provided on the side wall of the connecting cover.

[0006] The support groove and support sleeve provide a stable support structure, which can significantly reduce the impact of environmental vibration on the various components in the safety valve, ensuring that the spring and the sealing ring remain in the correct position. In addition, it can also prevent the dislocation of the sealing ring caused by vibration, thereby improving the sealing performance of the safety valve. The setting of the low-temperature melting point alloy enables it to melt quickly at a high warning temperature, thereby avoiding the failure of the safety valve caused by a high temperature environment. Under normal conditions, one end of the moving part supports the sealing plate, so that the sealing part on the sealing plate will not easily break when the air pressure in the air inlet channel is high. Only at high temperatures, the low-temperature melting point alloy melts and flows out from the connecting hole, the connecting part is no longer supported, moves, and the sealing part breaks. Driven by the air pressure, the low-temperature melting point alloy is pushed out, and the pressure is released through the exhaust hole to ensure the safety of the equipment.

[0007] Preferably, the moving part includes a first moving part and a second moving part, the first moving part extends into the pressure hole and supports the sealing part; the second moving part extends into the connection cover and is supported by the low-temperature melting point alloy, and the second moving part is sleeved with a second sealing ring that is sealed and connected to the connection cover. The first moving part extends into the pressure hole and directly supports the sealing part, ensuring that the sealing performance can be effectively maintained under pressure and reducing the risk of sealing failure caused by pressure difference changes. The second moving part extends into the connection cover and is supported by the low-temperature melting point alloy, ensuring that the alloy can be smoothly melted and release pressure under low temperature conditions. The second moving part is sleeved with a second sealing ring that is sealed and connected to the connection cover, which can effectively prevent the leakage of the medium and increase the overall sealing performance of the valve. This sealing design allows the valve to maintain a good sealing state under high pressure or extreme temperature, preventing pressure loss or environmental pollution. The coordinated design of the first moving part and the second moving part forms a more complete combination in structure, improves the overall strength and stability of the valve, and makes it less likely to have positioning misalignment when subjected to extreme conditions (such as vibration, impact, etc.).

[0008] Preferably, the movable part also includes a first connecting part located downstream of the first movable part and arranged at an angle, a columnar second connecting part is provided downstream of the first connecting part, and the second connecting part is connected to the second movable part. The first connecting part is arranged at an angle, which can guide the fluid to flow in a smoother path, reduce the turbulence and resistance that may be generated by the fluid at the bend, and improve the flow efficiency of the medium. This design helps to quickly discharge pressure and ensure that the safety valve can respond quickly to pressure changes. By setting the second connecting part to a columnar shape and connecting it to the second movable part, the structural stability of the entire movable part can be enhanced. The columnar connecting part can effectively disperse stress when subjected to lateral and axial forces, reducing the risk of damage caused by vibration or pressure changes.

[0009] Furthermore, a groove is provided on the second connection part, and a spring is sleeved on the outside of the second connection part. The spring is arranged to be larger outside and smaller inside, with one end abutting against the pressure relief chamber and the other end abutting against the bottom of the groove. The spring can help the moving part to move during pressure relief, and the low-temperature melting point alloy can flow out faster through elastic thrust.

[0010] Furthermore, the cross section of the second moving part is larger than that of the first moving part. The cross section of the second moving part is larger than that of the first moving part, so that the second moving part has a greater load-bearing capacity and structural strength. It is helpful to improve the flow efficiency and speed of the fluid, and can reduce the resistance and eddy current of the fluid during the flow process. The load and support capacity of the second moving part are better than those of the first moving part, which helps to maintain the normal function of the equipment under extreme working conditions.

[0011] Preferably, the first moving part is provided with an annular groove, and a first sealing ring is provided in the annular groove, and the first sealing ring abuts against the inner wall of the pressure hole and can slide airtightly in the pressure hole. The first sealing ring can slide airtightly in the pressure hole, and this feature ensures that the sealing ring can still maintain the sealing effect under different operating conditions. Even when the pressure changes or the machine moves, the sealing ring can adapt to its displacement to prevent sealing failure caused by friction or deformation.

[0012] Preferably, the sealing portion of the sealing plate is more likely to rupture when subjected to a pressure lower than the normal pressure of the air inlet passage. This design can react quickly to unexpected pressure anomalies, ensuring that the safety valve can operate normally under critical pressure conditions. When the moving portion does not provide support, it will not be affected by insufficient air pressure in the air inlet passage, and is more likely to rupture and release pressure.

[0013] Preferably, a pad located in front of the sealing plate is provided in the support groove, and a connecting hole connected to the air inlet passage is provided on the pad. The design of the pad can provide additional support for the sealing plate, help disperse the pressure applied to the sealing plate, and prevent it from deforming or breaking. The stability of this structure helps to improve the durability and reliability of the overall system, ensuring that the sealing performance is not affected during long-term operation. Due to the direct connection between the pad and the air inlet passage, the pressure is more evenly distributed on the pad, which helps to avoid sealing failure caused by pressure imbalance. The establishment of the pad helps to absorb and buffer the vibration caused by fluid flow, helps to maintain a good sealing state when the valve is working, reduces the occurrence of medium leakage, and ensures that the system remains in a stable operating state under high pressure conditions.

[0014] Preferably, the valve body is also provided with a detection hole arranged vertically with the exhaust hole. The detection hole can be used to detect whether there is air leakage when the exhaust hole is sealed, so as to check the safety status of the vehicle equipment.

[0015] The beneficial effects of the present invention are as follows: the support groove and the support sleeve provide a stable support structure, which can significantly reduce the impact of environmental vibration on the various components in the safety valve, and ensure that the spring and the sealing ring maintain the correct position. In addition, it can also prevent the dislocation of the sealing ring caused by vibration, thereby improving the sealing performance of the safety valve. The setting of the low-temperature melting point alloy enables it to melt quickly at a high warning temperature, thereby avoiding the failure of the safety valve caused by a high temperature environment. Under normal conditions, one end of the moving part supports the sealing plate, so that the sealing part on the sealing plate will not easily break when the air pressure in the air inlet channel is high. Only at high temperatures, the low-temperature melting point alloy melts and flows out from the connecting hole, the connecting part is no longer supported, moves, and the sealing part breaks, and the low-temperature melting point alloy is driven by the air pressure to flow out, and the pressure is released through the exhaust hole to ensure the safety of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still belong to the scope of the present invention.

[0017] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is a schematic diagram of the structure of the present invention in a pressure relief state; Figure 3 It is a partial cross-sectional view of the present invention; In the figure, 1. valve body; 11. exhaust hole; 12. detection hole; 2. base; 21. air inlet channel; 22. support groove; 23. support sleeve; 24. pressure hole; 25. pad; 26. connecting hole; 3. connecting cover; 31. low-temperature melting point alloy; 32. pressure relief chamber; 33. connecting hole; 4. sealing component; 41. sealing plate; 42. sealing part; 5. moving part; 51. first moving part; 52. annular groove; 53. first sealing ring; 54. second moving part; 55. first connecting part; 56. second connecting part; 57. groove; 58. spring; 59. second sealing ring;. DETAILED DESCRIPTION

[0018] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings.

[0019] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for distinguishing two non-identical entities with the same name or non-identical parameters. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. The subsequent embodiments will not explain this one by one.

[0020] The directions and positions mentioned in the present invention, such as "upper", "lower", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., are only for reference to the directions or positions of the drawings. Therefore, the directions and positions used are for explaining and understanding the present invention, but not for limiting the scope of protection of the present invention.

[0021] like Figure 1-3, which is an embodiment of a shockproof built-in safety valve of the present invention, comprises a cylindrical valve body 1, wherein the valve body 1 is threadedly connected to a base 2, wherein an air inlet passage 21 and a support groove 22 are provided on the base 2, wherein a support sleeve 23 is provided in the support groove 22, wherein a pressure-bearing hole 24 is formed in the support sleeve 23; a connecting cover 3 is threadedly connected to the valve body 1, wherein a low-temperature melting point alloy 31 is accommodated in the connecting cover 3; a pressure relief chamber 32 communicating with the pressure-bearing hole 24 is formed between the connecting cover 3 and the valve body 1, wherein an exhaust hole 11 is provided on the periphery of the valve body 1, The pressure relief chamber 32 is connected to the outside through the exhaust hole 11; a sealing part 42 is provided in the support groove 22, and the sealing part 42 includes a sealing plate 41 for isolating the air inlet channel 21 from the pressure hole 24, and the sealing plate 41 includes a sealing part 42 that is opposite to the pressure hole 24 and is easy to break. A moving part 5 is provided in the pressure hole 24, and one end of the moving part 5 is abutted against the sealing part 42, and the other end of the moving part 5 is supported by the low-temperature melting point alloy 31. A plurality of connecting holes 33 for the low-temperature melting point alloy 31 to flow out are provided on the side wall of the connecting cover 3.

[0022] The support groove 22 and the support sleeve 23 provide a stable support structure, which can significantly reduce the impact of environmental vibration on the various components in the safety valve, and ensure that the spring 58 and the sealing ring maintain the correct position. In addition, it can also prevent the sealing ring from being misplaced due to vibration, thereby improving the sealing performance of the safety valve. The setting of the low-temperature melting point alloy 31 enables it to melt quickly at a high temperature, thereby avoiding the failure of the safety valve caused by a high temperature environment. Under normal conditions, one end of the moving part 5 supports the sealing plate 41, so that the sealing part 42 on the sealing plate 41 will not easily break when the air pressure in the air inlet channel 21 is high. Only at high temperatures, the low-temperature melting point alloy 31 melts and flows out from the connecting hole 33, the connecting part is no longer supported, and moves, the sealing part 42 breaks, and the low-temperature melting point alloy 31 is pushed out by the air pressure, and the pressure is released through the exhaust hole 11 to ensure the safety of the equipment.

[0023] The movable part 5 includes a first movable part 51 and a second movable part 54. The first movable part 51 extends into the pressure hole 24 and supports the sealing part 42. The second movable part 54 extends into the connection cover 3 and is supported by the low-temperature melting point alloy 31. The second movable part 54 is sleeved with a second sealing ring 59 that is sealed and connected to the connection cover 3. The first movable part 51 extends into the pressure hole 24 and directly supports the sealing part 42, ensuring that the sealing performance can be effectively maintained under pressure and reducing the risk of sealing failure caused by pressure difference changes. The second movable part 54 extends into the connection cover 3 and is supported by the low-temperature melting point alloy 31, ensuring that the alloy can be smoothly melted and the pressure can be released under low temperature. The second movable part 54 is sleeved with a second sealing ring 59 that is sealed and connected to the connection cover 3, which can effectively prevent the leakage of the medium and increase the overall sealing performance of the valve. This sealing design allows the valve to maintain a good sealing state under high pressure or extreme temperature to prevent pressure loss or environmental pollution. The coordinated design of the first movable part 51 and the second movable part 54 forms a more complete combination in structure, thereby improving the overall strength and stability of the valve, making it less likely to have positioning misalignment problems when subjected to extreme conditions (such as vibration, impact, etc.).

[0024] The movable part 5 also includes a first connecting part 55 which is located downstream of the first movable part 51 and is arranged in an inclined manner. A columnar second connecting part 56 is provided downstream of the first connecting part 55, and the second connecting part 56 is connected to the second movable part 54. The first connecting part 55 is arranged in an inclined manner, which can guide the fluid to flow in a smoother path, reduce the turbulence and resistance that may be generated by the fluid at the bend, and improve the flow efficiency of the medium. This design helps to quickly discharge pressure and ensure that the safety valve can respond quickly to pressure changes. By setting the second connecting part 56 to a columnar shape and connecting it to the second movable part 54, the structural stability of the entire movable part 5 can be enhanced. The columnar connecting part can effectively disperse stress when subjected to lateral and axial forces, reducing the risk of damage caused by vibration or pressure changes.

[0025] Furthermore, the shape of the support sleeve 23 near the second connection portion 56 is also inclined, and an arc protrusion is provided at the end of the support sleeve 23 to play an anti-collision role.

[0026] The second connecting portion 56 is provided with a groove 57, and a spring 58 is sleeved on the outside of the second connecting portion 56. The spring 58 is arranged to be larger outside and smaller inside, with one end abutting against the pressure relief chamber 32 and the other end abutting against the bottom of the groove 57. The spring 58 can help the moving portion 5 to move during pressure relief, and the low-temperature melting point alloy 31 can flow out faster through elastic thrust.

[0027] The cross section of the second moving part 54 is larger than that of the first moving part 51. The cross section of the second moving part 54 is larger than that of the first moving part 51, so that the second moving part 54 has a greater load-bearing capacity and structural strength. It is helpful to improve the flow efficiency and speed of the fluid, and can reduce the resistance and eddy current of the fluid during the flow process. The load and support capacity of the second moving part 54 are better than those of the first moving part 51, which helps to maintain the normal function of the equipment under extreme working conditions.

[0028] The first moving part 51 is provided with an annular groove 52, and a first sealing ring 53 is provided in the annular groove 52. The first sealing ring 53 abuts against the inner wall of the pressure hole 24 and can slide airtightly in the pressure hole 24. The first sealing ring 53 can slide airtightly in the pressure hole 24, and this feature ensures that the sealing ring can maintain the sealing effect under different operating conditions. Even when the pressure changes or the machine moves, the sealing ring can adapt to its displacement to prevent sealing failure caused by friction or deformation.

[0029] Preferably, the sealing portion 42 of the sealing plate 41 is more likely to rupture when subjected to a pressure lower than the normal pressure of the air inlet passage 21. This design can react quickly to unexpected pressure anomalies, ensuring that the safety valve can operate normally under critical pressure conditions. When the moving portion 5 does not provide support, it will not be affected by the insufficient air pressure in the air inlet passage 21, and is more likely to rupture and release pressure.

[0030] A gasket 25 is provided in the support groove 22 and is located in front of the sealing plate 41. The gasket 25 is provided with a connecting hole 26 that is connected to the air inlet channel 21. The design of the gasket 25 can provide additional support for the sealing plate 41, help disperse the pressure applied to the sealing plate 41, and prevent it from deforming or breaking. The stability of this structure helps to improve the durability and reliability of the overall system, ensuring that the sealing performance is not affected during long-term operation. Due to the direct connection between the gasket 25 and the air inlet channel 21, the pressure is more evenly distributed on the gasket 25, which helps to avoid sealing failure caused by pressure imbalance. The establishment of the gasket 25 helps to absorb and buffer the vibration caused by the flow of the fluid, helps to maintain a good sealing state when the valve is working, reduces the occurrence of medium leakage, and ensures that the system remains in a stable operating state under high pressure conditions.

[0031] The valve body 1 is also provided with a detection hole 12 which is arranged in a vertical state with the exhaust hole 11. The detection hole 12 can be used to detect whether there is air leakage when the exhaust hole 11 is sealed, and to check the safety state of the vehicle equipment.

[0032] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

[0033] Although the invention has been described with reference to several specific embodiments, it should be understood that the invention is not limited to the specific embodiments disclosed. The invention is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. Shockproof built-in safety valve, characterized by: It comprises a cylindrical valve body, which is threadedly connected to a base, and an air inlet passage and a supporting groove are provided on the base, a supporting sleeve is provided in the supporting groove, and a pressure hole is formed in the supporting sleeve; a connecting cover is threadedly connected to the valve body, and a low-temperature melting point alloy is accommodated in the connecting cover; a pressure relief chamber connected to the pressure hole is formed between the connecting cover and the valve body, and an exhaust hole is provided on the periphery of the valve body, and the pressure relief chamber is connected to the outside through the exhaust hole; a sealing component is provided in the supporting groove, and the sealing component comprises a sealing plate for isolating the air inlet passage from the pressure hole, and the sealing plate comprises a sealing portion which is opposite to the pressure hole and is easy to break, a moving portion whose one end abuts against the sealing portion is provided in the pressure hole, and the other end of the moving portion is supported by the low-temperature melting point alloy, and a plurality of connecting holes for the outflow of the low-temperature melting point alloy are provided on the side wall of the connecting cover.

2. The shockproof built-in safety valve according to claim 1, characterized in that: The moving part includes a first moving part and a second moving part. The first moving part extends into the pressure hole and supports the sealing part. The second moving part extends into the connection cover and is supported by the low-temperature melting point alloy. The second moving part is sleeved with a second sealing ring that is sealed and connected to the connection cover.

3. The shockproof built-in safety valve according to claim 1, characterized in that: The moving part further includes a first connecting part which is located downstream of the first moving part and is arranged in an inclined manner. A columnar second connecting part is arranged downstream of the first connecting part, and the second connecting part is connected to the second moving part.

4. The shockproof built-in safety valve according to claim 3, characterized in that: The second connecting part is provided with a groove, and a spring is sleeved on the outside of the second connecting part. The spring is larger on the outside and smaller on the inside, with one end abutting against the pressure relief chamber and the other end abutting against the bottom of the groove.

5. The shockproof built-in safety valve according to claim 2 or 3, characterized in that: The second moving portion has a larger cross-section than the first moving portion.

6. The shockproof built-in safety valve according to claim 1, characterized in that: The first moving part is provided with an annular groove, a first sealing ring is provided in the annular groove, the first sealing ring abuts against the inner wall of the pressure receiving hole and can slide airtightly in the pressure receiving hole.

7. The shockproof built-in safety valve according to claim 1, characterized in that: The sealing portion of the sealing plate is more easily broken when subjected to a pressure lower than the normal pressure of the intake passage.

8. The shockproof built-in safety valve according to claim 1, characterized in that: A pad is provided in the support groove and is located in front of the sealing plate. A connecting hole communicating with the air inlet passage is provided on the pad.

9. The shockproof built-in safety valve according to claim 1, characterized in that: The valve body is also provided with a detection hole which is arranged in a vertical state with the exhaust hole.

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