Temperature pressure safety valve

Abstract

The utility model discloses a temperature and pressure safety valve and belongs to the technical field of safety valves. The temperature pressure safety valve comprises a valve body, a valve seat and a temperature sensing element; wherein a container connector and a pressure relief opening are formed in the valve body, and a pressure relief assembly which communicates with the container connector and the pressure relief opening through movement and conducts pressure relief is arranged in the valve body; the valve seat is detachably connected into the valve body; one end of the temperature sensing element penetrates into the valve body and is fixed through the valve seat, and an ejector rod of the temperature sensing element can penetrate through the valve seat upwards in the Z-axis direction and abut against the pressure relief assembly so as to push the pressure relief assembly to move upwards in the Z-axis direction to be communicated with the container connector and the pressure relief opening. According to the temperature and pressure safety valve, the risk of sand hole leakage of the valve body can be reduced, it is guaranteed that the machining quality of the valve body is good, the valve body can be machined easily, and the machining cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of safety valves, in particular to a temperature and pressure safety valve. Background Art

[0002] The temperature and pressure safety valve mainly includes a valve body, a valve seat, a temperature sensing element and a pressure relief assembly. The valve seat and the pressure relief assembly are respectively located in the valve body, a part of the temperature sensing element is connected to the inside through the valve seat limiter, and the other part of the temperature sensing element is located in the container; when the temperature sensing element is affected by the temperature in the container, the push rod in the temperature sensing element can move upward along the Z axis so that the push rod abuts against the abutment in the pressure relief assembly and pushes the entire pressure relief assembly to move upward along the Z axis, thereby connecting the pressure relief port on the valve body and the container interface connected to the container to achieve the pressure relief function.

[0003] However, since the valve body and valve seat are an integrally formed structure, the overall structure of the valve body and valve seat is relatively complex, so that the integrally formed structure needs to be processed and formed by sand casting, resulting in poor density of the processed valve body, and the risk of sand hole leakage, resulting in poor processing quality of the valve body; and the processing technology of sand casting is relatively complicated, resulting in low processing efficiency of the integrally formed structure; at the same time, due to the high processing technology cost of sand casting, the overall processing cost is high. Among them, sand casting specifically refers to a casting method for producing castings in a sand mold.

[0004] In view of the above problems, a temperature and pressure safety valve is urgently needed to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a temperature and pressure safety valve, which can reduce the risk of sand hole leakage in the valve body, ensure good processing quality of the valve body, and make the processing of the valve body simple and low in processing cost.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] Temperature and pressure safety valve, including:

[0008] A valve body, wherein a container interface and a pressure relief port are respectively provided on the valve body, and a pressure relief component is provided inside the valve body for connecting the container interface and the pressure relief port through movement and performing pressure relief;

[0009] A valve seat, detachably connected to the valve body;

[0010] A temperature sensing element, one end of which penetrates the valve body and is fixed by the valve seat, and a push rod of the temperature sensing element can pass through the valve seat upward along the Z axis and abut against the pressure relief component to push the pressure relief component to move upward along the Z axis to connect the container interface and the pressure relief port.

[0011] As an optional solution, the valve seat includes:

[0012] A main body seat, which is detachable and sealingly connected to the valve body;

[0013] The fixing seat is connected to the lower part of the main body seat. The fixing seat is provided with a mounting through hole. The temperature sensing element is coaxially arranged in the mounting through hole.

[0014] As an optional solution, a connecting through hole is provided in the main body seat, and the connecting through hole is coaxially arranged and connected with the mounting through hole. The push rod can abut against the pressure relief component through the connecting through hole, and the pressure relief component can open or seal the connecting through hole to connect or disconnect the container interface and the pressure relief port.

[0015] As an optional solution, at least one connecting rod is connected between the main seat and the fixing seat.

[0016] As an optional solution, the main seat, the connecting rod and the fixing seat are an integrally formed structure.

[0017] As an optional solution, the temperature sensing element further includes:

[0018] An outer shell, one end of which penetrates into the valve body and is fixed by the valve seat;

[0019] A temperature control filler is sealed in the outer shell, one end of the push rod is located in the outer shell, and the other end of the push rod passes through the outer shell to abut against the pressure relief component.

[0020] As an optional solution, the temperature sensing element further includes:

[0021] A first sealing member is disposed in the outer shell and located on the temperature control filler. The first sealing member is used to seal the temperature control filler into the outer shell. One end of the push rod located in the outer shell abuts against the first sealing member.

[0022] As an optional solution, the first sealing member is a sphere.

[0023] As an optional solution, a limiting boss is provided around one end of the fixing seat of the outer shell passing through the valve seat, and when the outer shell is inserted into the fixing seat, the bottom end surface of the limiting boss abuts against the top end surface of the fixing seat.

[0024] As an optional solution, the valve body includes:

[0025] The valve body and the valve cover, the valve seat is detachably connected to the valve body, and the valve cover sealing cover is arranged at the opening end of the valve body.

[0026] As an optional solution, the pressure relief component includes:

[0027] A sealing seat, located in the valve body;

[0028] A valve stem, one end of which is limitedly connected to the sealing seat, and the other end of which extends out of the valve body and is connected to a handle;

[0029] An elastic member is sleeved on the valve stem, and two ends of the elastic member are respectively in contact with the sealing seat and the inner top wall surface of the valve body.

[0030] As an optional solution, the pressure relief component also includes:

[0031] An abutment member connected to the sealing seat, and the ejector rod can abut against the abutment member;

[0032] The second sealing member is connected to the abutting member and is located in the sealing seat. The second sealing member is used to abut against the top end surface of the valve seat to seal the connecting through hole in the valve seat.

[0033] The beneficial effects of the utility model are:

[0034] A container interface for connecting a container and a pressure relief port for pressure relief are respectively provided on the valve body, and a pressure relief component is provided in the valve body to connect the container interface and the pressure relief port and relieve pressure by movement, and at the same time, one end of the temperature sensing element is inserted into the valve body and fixed by the valve seat; when the temperature is too high, the push rod of the temperature sensing element can pass through the valve seat upward along the Z axis and abut against the pressure relief component to push the pressure relief component to move upward along the Z axis to connect the container interface and the pressure relief port, so as to discharge the heat in the container through the pressure relief port, thereby ensuring the normal service life of the container; The valve seat is detachably connected to the valve body, that is, the valve body and the valve seat are two independently arranged structures, so that the structure of the valve body is relatively simple, and therefore the valve body can be formed by a hot extrusion process. Compared with the prior art in which the valve body and valve seat of the one-piece structure are formed by sand casting, the density of the valve body can be improved, the risk of sand hole leakage in the valve body can be reduced, and the processing quality of the valve body can be guaranteed to be better; in addition, the hot extrusion process is simple and the cost is low, so the processing of the valve body is relatively simple, thereby improving the processing efficiency of the valve body and reducing the processing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic diagram of the structure of the temperature and pressure safety valve provided by the utility model. Figure 1 ;

[0036] Figure 2 It is a cross-sectional view of the temperature and pressure safety valve provided by the utility model;

[0037] Figure 3 This is a schematic diagram of the structure of the temperature and pressure safety valve provided by the utility model (without the valve body and the second sealing member not sealed to the connecting through hole) Figure 2 ;

[0038] Figure 4 It is a structural schematic diagram of the valve seat provided by the utility model at one viewing angle;

[0039] Figure 5 It is a structural schematic diagram of the valve seat provided by the utility model from another perspective;

[0040] Figure 6 It is a structural schematic diagram of a pressure relief assembly (with a valve cover) provided by the utility model;

[0041] Figure 7 It is a cross-sectional view of the temperature sensing element provided by the utility model.

[0042] Description of reference numerals:

[0043] 10-valve body; 11-valve body; 111-container interface; 112-pressure relief port; 12-valve cover; 13-first sealing ring;

[0044] 20-valve seat; 21-main body seat; 211-connection through hole; 22-fixed seat; 221-installation through hole; 23-connecting rod; 24-second sealing ring;

[0045] 30-temperature sensing element; 31-outer shell; 311-limiting boss; 32-first sealing member; 33-manipulator; 34-temperature control filler;

[0046] 40-pressure relief assembly; 41-sealing seat; 42-valve stem; 43-abutting member; 44-second sealing member; 45-elastic member; 46-third sealing ring;

[0047] 50-handle; 60-nameplate; 70-sealing gasket. DETAILED DESCRIPTION

[0048] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0049] Any feature disclosed in this specification, unless otherwise stated, may be replaced by other equivalent or alternative features having similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features. Throughout the specification, the same reference numerals indicate the same elements.

[0050] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clearly, the technical solutions of the present invention are further explained below with reference to the accompanying drawings and through specific implementation methods.

[0051] In this embodiment, a temperature and pressure safety valve is proposed, which can timely release the pressure and heat in the container to ensure the normal service life of the container, and the temperature and pressure safety valve has high processing efficiency and low processing cost. In this embodiment, the container can be a water container in a pressurized solar water heater, an electric water heater or a gas water heater.

[0052] It is worth explaining that the temperature and pressure safety valve specifically refers to a valve that integrates pressure limiting and temperature limiting, which can solve the safety problems of overpressure and overtemperature of the container at one time, and the pressure limiting function and the temperature limiting function can be triggered independently or simultaneously; the use of a temperature and pressure safety valve can avoid the impact of excessive temperature or pressure inside the container on the service life of the container.

[0053] Specifically, Figures 1 to 3 As shown, the temperature and pressure safety valve includes a valve body 10, a valve seat 20 and a temperature sensing element 30; wherein, a container interface 111 and a pressure relief port 112 are respectively provided on the valve body 10, and a pressure relief component is provided in the valve body 10 for connecting the container interface 111 and the pressure relief port 112 through movement and performing pressure relief, and the valve body 10 is formed by hot extrusion; the valve seat 20 is detachably connected to the valve body 10; one end of the temperature sensing element 30 penetrates into the valve body 10 and is fixed by the valve seat 20, and the push rod 33 of the temperature sensing element 30 can pass through the valve seat 20 upward along the Z axis and abut against the pressure relief component 40, so as to push the pressure relief component 40 to move upward along the Z axis to connect the container interface 111 and the pressure relief port 112, so as to achieve pressure relief of the container.

[0054] A container interface 111 for connecting a container and a pressure relief port 112 for pressure relief are respectively provided on the valve body 10, and a pressure relief assembly 40 is provided in the valve body 10 which can be moved to connect the container interface 111 and the pressure relief port 112 and relieve pressure, and at the same time, one end of the temperature sensing element 30 is inserted into the valve body 10 and fixed by the valve body 10; when the temperature is too high, the push rod 33 of the temperature sensing element 30 can pass through the valve seat 20 upward along the Z axis and abut against the pressure relief assembly 40, so as to push the pressure relief assembly 40 to move upward along the Z axis to connect the container interface 111 and the pressure relief port 112, so as to realize the discharge of heat in the container through the pressure relief port 112, thereby ensuring the normal service life of the container.

[0055] Compared with the prior art, the temperature and pressure safety valve in this embodiment sets the valve body 10 and the valve seat 20 as two independent structures; the valve body 10 and the valve seat 20 for connecting the temperature sensing element 30 are detachably connected in a split manner, that is, the valve body 10 and the valve seat 20 are two independently set structures, so that the structure of the valve body 10 is relatively simple, and therefore the valve body 10 can be formed by a hot extrusion process. Compared with the prior art in which the valve body 10 and the valve seat 20 of an integrated structure are formed by sand casting, the density of the valve body 10 can be improved, the risk of sand hole leakage in the valve body 10 can be reduced, and the processing quality of the valve body 10 can be ensured to be good; and the hot extrusion process is simple and the cost is low, so that the processing of the valve body 10 is relatively simple, thereby improving the processing efficiency of the valve body 10 and reducing the processing cost.

[0056] It is worth noting that, since the valve body 10 and the valve seat 20 are independent structures, the molding process of the valve seat 20 is not specifically limited here, as long as a processing process with simple processing technology, low processing cost and guaranteed processing quality of the valve seat 20 can be adopted, that is, the processing technology of the valve seat 20 is not affected by the processing technology of the valve body 10. In this embodiment, the valve seat 20 can be formed by hot extrusion process; and the hot extrusion process of the valve body 10 and the valve seat 20 is specifically a hot stamping process, which specifically refers to a hot extrusion process. The hot stamping process has the advantage that the molding is basically not limited by the external shape of the valve body 10 or the valve seat 20 itself, so that the molding is relatively simple, and the productivity is high, which is suitable for mass production.

[0057] Furthermore, if Figures 1 to 3 As shown, the valve body 10 includes a valve body 11 and a valve cover 12, the valve seat 20 is detachably connected to the valve body 11, and the valve cover 12 is sealed and arranged at the open end of the valve body 11, that is, a first sealing ring 13 is arranged between the valve cover 12 and the valve body 11 to ensure the sealing of the connection between the valve cover 12 and the valve body 11. In this embodiment, the valve cover 12 is connected to the open end of the valve body 11 by threads.

[0058] It is worth noting that the above-mentioned processing technology for the valve body 10 specifically refers to the processing technology for the valve body 11 in the valve body 10. The molding technology for the valve cover 12 in the valve body 10 is not specifically limited here, as long as the processing technology is simple, the processing cost is low, and the processing quality of the valve cover 12 can be guaranteed, that is, the processing technology of the valve cover 12 is not affected by the processing technology of the valve body 11. In this embodiment, the valve cover 12 can be specifically formed by hot stamping.

[0059] The specific structure of the valve seat 20 is described in detail below:

[0060] Specifically, Figures 2 to 5 As shown, the valve seat 20 includes a main seat 21 and a fixed seat 22. The main seat 21 is detachable and sealedly connected to the valve body 11 of the valve body 10, that is, a second sealing ring 24 is provided between the main seat 21 and the valve body 11 to ensure the sealing between the main seat 21 and the valve body 11; the fixed seat 22 is connected to the lower part of the main seat 21 at intervals, and a mounting through hole 221 is provided in the fixed seat 22. The temperature sensing element 30 is coaxially penetrated in the mounting through hole 221, so that the temperature sensing element 30 can be limitedly connected to the valve body 11 through the valve seat 20. Among them, the main seat 21 is connected to the valve body 11 by threads.

[0061] Specifically, if Figure 4 and Figure 5 As shown, at least one connecting rod 23 is connected between the main body seat 21 and the fixed seat 22 to achieve the connection and fixation between the main body seat 21 and the fixed seat 22; and the connecting rod 23 can ensure the connection effect between the main body seat 21 and the fixed seat 22 while making the structure of the entire valve seat 20 relatively simple. In this embodiment, two connecting rods 23 are relatively arranged between the main body seat 21 and the fixed seat 22, so as to ensure that the connection effect between the main body seat 21 and the fixed seat 22 is relatively stable and reliable.

[0062] In this embodiment, Figure 4 and Figure 5 As shown, the main body seat 21, the connecting rod 23 and the fixing seat 22 are an integrally formed structure, so that the processing and forming of the entire valve seat 20 is relatively simple, and the connection stability and reliability between the main body seat 21, the connecting rod 23 and the fixing seat 22 can be ensured. In other embodiments, the main body seat 21, the connecting rod 23 and the fixing seat 22 can also be a split structure that is independently arranged from each other.

[0063] Furthermore, if Figures 2 to 5 As shown, a connecting through hole 211 is provided in the main body seat 21, and the connecting through hole 211 is coaxially arranged and connected with the mounting through hole 221, so that the push rod 33 located in the mounting through hole 221 can pass through the connecting through hole 211 to abut against the pressure relief component 40, so as to push the pressure relief component 40 sealed against the connecting through hole 211, and then open the connecting through hole 211, that is, the connecting through hole 211 can be opened or sealed by the pressure relief component 40, so as to connect or cut off the container interface 111 and the pressure relief port 112. Among them, by making the connecting through hole 211 and the mounting through hole 221 coaxially arranged, it is ensured that the push rod 33 of the temperature sensing element 30 can abut against the pressure relief component 40 concentrically, and the stability of the pressure relief component 40 when moving upward along the Z axis is ensured.

[0064] The specific structure of the pressure relief assembly 40 is described in detail below:

[0065] Specifically, Figure 2 , Figure 3 and Figure 6 As shown, the pressure relief assembly 40 includes a sealing seat 41, a valve stem 42 and an elastic member 45; wherein the sealing seat 41 is located in the valve body 11 of the valve body 10; one end of the valve stem 42 is limitedly connected in the sealing seat 41, and the other end of the valve stem 42 extends out of the valve cover 12 of the valve body 10 along the Z axis and is connected to a handle 50, and a third sealing ring 46 is provided between the valve stem 42 and the valve cover 12 to ensure the sealing effect between the valve stem 42 and the valve cover 12; the elastic member 45 is sleeved on the valve stem 42, and the two ends of the elastic member 45 are respectively abutted against the sealing seat 41 and the inner top wall surface of the valve cover 12 of the valve body 10, so that the elastic member 45 and the sealing seat 41 can be fixedly arranged in the valve body 11 through the valve cover 12. In this embodiment, the elastic member 45 can be specifically a compression spring.

[0066] By turning the handle 50, the valve stem 42 can be driven to move upward along the Z axis, thereby completing manual pressure relief; the manual pressure relief process in this embodiment is a common pressure relief working process in existing safety valves, and the specific manual pressure relief process is not described in detail here. In this embodiment, the handle 50 is fixedly connected to the valve stem 42 by riveting.

[0067] Furthermore, if Figure 3 and Figure 6 As shown, the pressure relief assembly 40 also includes abutment 43 and a second sealing member 44; wherein, the abutment 43 is interference-inserted in the sealing seat 41, and the second sealing member 44 is connected to the abutment 43 and is located in the sealing seat 41; the push rod 33 can directly abut against the abutment 43, so as to be able to drive the second sealing member 44, the sealing seat 41 and the valve stem 42 to move upward along the Z axis as a whole by pushing the abutment 43, and at this time the elastic member 45 is compressed; the second sealing member 44 is used to abut against the top end surface of the main seat 21 of the valve seat 20, so as to achieve sealing of the connecting through hole 211 in the main seat 21 through the pressure relief assembly 40, thereby isolating the container interface 111 on the valve body 11 from the pressure relief port 112.

[0068] It is worth noting that the second sealing member 44 is made of rubber material, which can ensure the sealing effect of the second sealing member 44 on the connecting through hole 211, thereby ensuring the sealing and partitioning effect between the container interface 111 and the pressure relief port 112; and the abutment member 43 is made of metal material, which can prevent the push rod 33 from puncturing the abutment member 43 during long-term use, thereby increasing the service life of the abutment member 43; on the other hand, since the abutment member 43 is hard in texture, no pre-compression will occur when the push rod 33 contacts the abutment member 43, so that the push rod 33 can promptly push the entire pressure relief assembly 40 upward to eliminate the time difference caused by pre-compression, thereby ensuring that the pressure relief opening time is relatively timely. In this embodiment, the abutment member 43 is specifically made of stainless steel.

[0069] The specific structure of the temperature sensing element 30 is described in detail below:

[0070] At present, in temperature and pressure safety valves with large-diameter displacement, the elastic force of the elastic member 45 is required to be larger. Correspondingly, the diameter of the push rod 33 needs to be increased to avoid the problem that the push rod 33 with a smaller diameter is bent or even broken when it overcomes the elastic force of the elastic member 45 and pushes the abutment member 43 and the second sealing member 44 upward along the Z axis. At the same time, the size of the outer shell 31 also needs to be increased accordingly to accommodate the larger push rod 33.

[0071] However, since the sizes of the top rod 33 and the outer shell 31 have been increased at this time, if a return spring is arranged outside the top rod 33, the size of the outer shell 31 needs to be further increased, making the size of the outer shell 31 larger; correspondingly, the filling amount of the temperature control filler 34 filled in the outer shell 31 also needs to be further increased, resulting in a higher cost for the entire temperature sensing element 30.

[0072] In order to solve the above problems, Figure 2 and Figure 7 As shown, the temperature sensing element 30 in this embodiment includes an outer shell 31, a temperature control filler 34 and the above-mentioned push rod 33; wherein one end of the outer shell 31 passes through the mounting through hole 221 in the fixing seat 22 to limit the temperature sensing element 30 and connect it to the valve seat 20; the temperature control filler 34 is sealed in the outer shell 31; one end of the push rod 33 is located in the outer shell 31, and the other end of the push rod 33 passes through the outer shell 31 to abut against the abutment 43 of the pressure relief assembly 40. In this embodiment, the temperature control filler 34 can be paraffin.

[0073] By making the temperature sensing element 30 include an outer shell 31, a temperature control filler 34 and a push rod 33, that is, no return spring is provided in the temperature sensing element 30, on the one hand, the structure of the entire temperature sensing element 30 is simple and the cost is low; on the other hand, since the return spring is omitted in the outer shell 31, when the sizes of the push rod 33 and the outer shell 31 have been increased, there is no need to further increase the size of the outer shell 31, so that the size of the outer shell 31 will not be too large, so that the processing cost of the outer shell 31 can be reduced; correspondingly, the filling amount of the temperature control filler 34 filled in the outer shell 31 does not need to be further increased, so that the filling cost of the temperature control filler 34 can be reduced, thereby further reducing the cost of the entire temperature sensing element 30.

[0074] It is worth noting that in the automatic reset after pressure relief, due to the abutment between the ejector rod 33 and the abutment member 43, the ejector rod 33 can automatically move and reset downward along the Z axis under the elastic force of the elastic member 45. When the second sealing member 44 moves to the sealing seat 41 and seals and abuts against the outer periphery of the connecting through hole 211, that is, when the second sealing member 44 returns to reseal the connecting through hole 211, the ejector rod 33 no longer moves and resets downward along the Z axis. In other words, the reset spring is omitted, and the ejector rod 33 can only automatically reset to this position and cannot automatically reset to the initial position. That is, relative to the reset spring provided on the outer side of the ejector rod 33, the ejector rod 33 in this embodiment can also be automatically reset, and only the reset position is different. Even if the ejector rod 33 cannot automatically reset to the initial position, the ejector rod 33 after reset in this embodiment will not affect the sealing of the connecting through hole 211 by the second sealing member 44. Therefore, the reset spring is omitted in the temperature sensing element 30, and the automatic reset of the ejector rod 33 can be guaranteed without affecting the reset work of the ejector rod 33.

[0075] It is worth noting that, in order to facilitate the smooth insertion of the outer shell 31 of the temperature sensing element 30 into the installation through hole 221, the inner diameter of the installation through hole 221 needs to be slightly larger than the outer diameter of the outer shell 31, so that the outer shell 31 can be inserted into the installation through hole 221 with clearance, thereby ensuring the smooth assembly between the temperature sensing element 30 and the valve seat 20. Among them, since the clearance between the outer shell 31 and the installation through hole 221 is small, the limiting connection of the outer shell 31 in the installation through hole 221 will not be affected.

[0076] Furthermore, the temperature sensing element 30 further includes a first sealing member 32, which is disposed in the outer shell 31 and located on the temperature control filler 34. The first sealing member 32 is used to seal the temperature control filler 34 into the outer shell 31 to prevent leakage of the temperature control filler 34. One end of the top rod 33 located in the outer shell 31 abuts against the first sealing member 32. In this embodiment, the first sealing member 32 is specifically a sphere.

[0077] Furthermore, if Figure 2 , Figure 3 and Figure 7 As shown, in order to ensure that the outer shell 31 has a better limiting effect in the mounting hole 221 of the fixing seat 22, a limiting boss 311 is provided on one end of the outer shell 31 passing through the mounting hole 221; when the outer shell 31 is inserted into the mounting hole 221, the bottom end surface of the limiting boss 311 abuts against the top end surface of the fixing seat 22, so that the limiting effect of the outer shell 31 can be ensured by the limiting abutment between the limiting boss 311 and the fixing seat 22, thereby preventing the outer shell 31 from moving downward along the Z-axis in the mounting hole 221.

[0078] Specifically, when the temperature in the container is too high and the pressure is not too high, the heat in the container is transferred to the temperature control filler 34 through the outer shell 31, so that the temperature control filler 34 is heated and changes from a solid state to a liquid state. The volume of the temperature control filler 34 in the outer shell 31 expands, and the expansion force pushes the first seal 32 and the push rod 33 upward along the Z axis, so that the push rod 33 pushes the abutment 43 and the second seal 44 upward along the Z axis, so that the second seal 44 opens the connecting through hole 211, and then connects the container interface 111 and the pressure relief port 112 on the valve body 11; at this time, due to the limiting abutment effect of the valve cover 12 on the elastic member 45, the elastic member 45 is compressed.

[0079] It is worth noting that due to the expansion force of the temperature control filler 34, the first seal 32 and the push rod 33 are pushed upward along the Z axis. Due to the interaction force between the push rod 33 and the outer shell 31, the outer shell 31 has a tendency to move downward along the Z axis, that is, the problem of the outer shell 31 moving upward along the Z axis in the mounting through hole 221 during operation will not occur, thereby ensuring the stability of the position of the outer shell 31 in the mounting through hole 221.

[0080] Specifically, if Figure 1 and Figure 2 As shown, a nameplate 60 and a sealing gasket 70 are sequentially arranged above the valve cover 12. The nameplate 60 and the sealing gasket 70 are respectively sleeved on the valve stem 42. The nameplate 60 is provided with information parameters of the temperature and pressure safety valve. The sealing gasket 70 can help to ensure the sealing effect between the valve stem 42 and the valve cover 12, so that the sealing effect between the valve stem 42 and the valve cover 12 is better.

[0081] The specific working process of the temperature and pressure safety valve in this embodiment is as follows:

[0082] First, when the temperature in the container is too high and the pressure is not too high, the temperature control filler 34 in the outer shell 31 is heated and changes from a solid state to a liquid state, and the volume of the temperature control filler 34 in the outer shell 31 expands. The expansion force pushes the first seal 32 and the push rod 33 upward along the Z axis, so that the push rod 33 pushes the abutment 43 and the second seal 44 upward along the Z axis, so that the second seal 44 opens the connecting through hole 211, and then connects the container interface 111 and the pressure relief port 112 on the valve body 11 to relieve pressure; at this time, the elastic member 45 is compressed.

[0083] When the temperature in the container decreases, the temperature control filler 34 changes from a liquid state to a fixed state when the temperature is relatively low. At this time, the volume of the temperature control filler 34 in the outer shell 31 is reduced, and the elastic action of the elastic member 45 drives the sealing seat 41, the abutment member 43 and the second sealing member 44 to move downward along the Z axis and reset, until the second sealing member 44 re-seals the connecting through hole 211 in the main body seat 21, thereby isolating the container interface 111 and the pressure relief port 112; at the same time, due to the abutment action between the abutment member 43 and the ejector rod 33, when the abutment member 43 automatically resets downward along the Z axis, the abutment member 43 can push the ejector rod 33 to automatically reset downward along the Z axis until the second sealing member 44 re-seals the connecting through hole 211, and at this time the ejector rod 33 no longer continues to move downward along the Z axis.

[0084] When the pressure in the container is too high but the temperature is not too high, the pressure directly acts on the second sealing member 44 to overcome the elastic force of the elastic member 45 under the action of pressure and directly push the second sealing member 44 upward along the Z axis to separate from the connecting through hole 211, thereby completing automatic pressure relief in the container.

[0085] When the container is not used for a long time or an abnormal situation occurs, the pressure can be manually released through the handle 50, thereby ensuring the safety of the container during use.

[0086] The temperature and pressure safety valve in the present embodiment has a valve seat 20 and a valve body 11 in the valve body 10 as two independent structures, so that the structure of the valve body 11 is relatively simple, so that the valve body 11 can be formed by a hot extrusion process, thereby ensuring that the processing quality of the valve body 11 is good, the processing is simple, and the processing cost is low; at the same time, the return spring is omitted in the temperature sensing element 30, so that the need to further increase the size of the outer shell 31 and the filling amount of the temperature control filler 34 can be avoided while ensuring that the push rod 33 is not bent, so that the cost of the entire temperature sensing element 30 is relatively low.

[0087] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. Temperature and pressure safety valve, characterized in that: include: A valve body (10), wherein the valve body (10) is respectively provided with a container interface (111) and a pressure relief port (112), and a pressure relief component (40) is provided therein, which is movable to connect the container interface (111) and the pressure relief port (112) and relieve pressure; A valve seat (20) detachably connected to the valve body (10); One end of the temperature sensing element (30) penetrates into the valve body (10) and is fixed by the valve seat (20); the push rod (33) of the temperature sensing element (30) can pass through the valve seat (20) upward along the Z axis and abut against the pressure relief component (40) to push the pressure relief component (40) to move upward along the Z axis to connect the container interface (111) and the pressure relief port (112).

2. The temperature and pressure safety valve according to claim 1, characterized in that: The valve seat (20) comprises: A main body seat (21), the main body seat (21) is detachable and sealingly connected to the valve body (10); The fixing seat (22) is connected to the lower part of the main body seat (21), and a mounting through hole (221) is provided in the fixing seat (22), and the temperature sensing element (30) is coaxially inserted into the mounting through hole (221).

3. The temperature and pressure safety valve according to claim 2, characterized in that: A connecting through hole (211) is provided in the main body seat (21), and the connecting through hole (211) is coaxially arranged and connected with the mounting through hole (221). The push rod (33) can abut against the pressure relief component (40) through the connecting through hole (211), and the pressure relief component (40) can open or seal the connecting through hole (211) to connect or isolate the container interface (111) and the pressure relief port (112).

4. The temperature and pressure safety valve according to claim 2, characterized in that: At least one connecting rod (23) is connected between the main seat (21) and the fixing seat (22).

5. The temperature and pressure safety valve according to claim 4, characterized in that: The main body seat (21), the connecting rod (23) and the fixing seat (22) are an integrally formed structure.

6. The temperature and pressure safety valve according to any one of claims 1 to 5, characterized in that: The temperature sensing element (30) further comprises: An outer shell (31), one end of the outer shell (31) penetrates into the valve body (10) and is fixed by the valve seat (20); A temperature control filler (34) is sealed in the outer shell (31), one end of the push rod (33) is located in the outer shell (31), and the other end of the push rod (33) passes through the outer shell (31) to abut against the pressure relief component (40).

7. The temperature and pressure safety valve according to claim 6, characterized in that: The temperature sensing element (30) further comprises: A first sealing member (32) is disposed in the outer shell (31) and is located on the temperature control filler (34). The first sealing member (32) is used to seal the temperature control filler (34) into the outer shell (31). One end of the push rod (33) located in the outer shell (31) abuts against the first sealing member (32).

8. The temperature and pressure safety valve according to claim 7, characterized in that: The first sealing member (32) is a sphere.

9. The temperature and pressure safety valve according to claim 6, characterized in that: A limiting boss (311) is provided around one end of the outer shell (31) that passes through the fixed seat (22) of the valve seat (20); when the outer shell (31) is inserted into the fixed seat (22), the bottom end surface of the limiting boss (311) abuts against the top end surface of the fixed seat (22).

10. The temperature and pressure safety valve according to any one of claims 1 to 5, characterized in that: The valve body (10) comprises: A valve body (11) and a valve cover (12), wherein the valve seat (20) is detachably connected to the valve body (11), and the valve cover (12) sealing cover is arranged at the opening end of the valve body (11).

11. The temperature and pressure safety valve according to any one of claims 1 to 5, characterized in that: The pressure relief assembly (40) comprises: A sealing seat (41) located inside the valve body (10); a valve stem (42), one end of the valve stem (42) being limit-connected in the sealing seat (41), and the other end of the valve stem (42) extending out of the valve body (10) and connected to a handle (50); An elastic member (45) is sleeved on the valve stem (42), and two ends of the elastic member (45) are respectively in contact with the sealing seat (41) and the inner top wall surface of the valve body (10).

12. The temperature and pressure safety valve according to claim 11, characterized in that: The pressure relief assembly (40) further comprises: An abutment member (43) connected to the sealing seat (41), and the push rod (33) can abut against the abutment member (43); A second sealing member (44) is connected to the abutting member (43) and is located in the sealing seat (41), and the second sealing member (44) is used to abut against the top end surface of the valve seat (20) to seal the connecting through hole (211) in the valve seat (20).

Images