Temperature sensing element and temperature pressure safety valve
By riveting and assembling the seal onto the temperature-controlled medium in the temperature-pressure safety valve under vacuum, the problems of complex structure of the sealing gasket and piston rod and poor sealing effect are solved, and better sealing effect and longer Service life.
Patent Information
- Application Number
- CN202421005833.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-10
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-05-10
AI Technical Summary
The temperature sensing elements in existing temperature pressure safety valves are complex in the sealing gasket and piston rod structure, resulting in high processing costs, and the deformation of the exhaust holes in the sealing gasket leads to poor sealing effect, increasing leakage risk and reducing service life.
By first installing a temperature-controlled medium in the outer shell and riveting the seal onto the temperature-controlled medium under vacuum, the exhaust holes and guide convex rods are avoided, the structure is simplified, the processing cost is reduced, and the sealing effect is improved.
It achieves a good sealing effect between the seal and the temperature-controlled medium, reduces leakage risk, extends the service life of the temperature sensing element, and reduces processing costs.
Smart Images
Figure CN222229638U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of safety valves, in particular to a temperature sensing element and a temperature and pressure safety valve. Background Art
[0002] The temperature sensing element in the temperature and pressure safety valve mainly includes an outer shell, paraffin, a sealing gasket and a piston rod; wherein the paraffin is first assembled into the outer shell, and then the sealing gasket is riveted and assembled onto the paraffin, and the piston rod is installed onto the sealing gasket.
[0003] Among them, in order to ensure the sealing effect of the sealing gasket, an exhaust hole is provided in the sealing gasket, which is used to discharge the air between the sealing gasket and the paraffin in the outer shell when the sealing gasket is riveted and assembled, so as to ensure that the sealing gasket can be completely sealed and compacted on the paraffin; correspondingly, a guide protrusion is provided on the surface of the piston rod that contacts the sealing gasket. When the piston rod is installed on the sealing gasket, the guide protrusion on the piston rod is inserted into the exhaust hole in the sealing gasket to seal the exhaust hole, thereby ensuring the sealing effect of the entire sealing gasket on the paraffin.
[0004] However, due to the above-mentioned method of installing the sealing gasket, on the one hand, the structure of the sealing gasket and the piston rod is more complicated, which increases the processing cost; on the other hand, during the riveting and assembly process of the sealing gasket, the exhaust hole in the sealing gasket is easily deformed and eccentric. When assembling the piston rod, the eccentricity of the exhaust hole can easily lead to poor sealing effect of the guide protrusion on the exhaust hole, which makes the paraffin at risk of leakage during long-term use in the later stage, thereby reducing the service life of the entire temperature sensing element.
[0005] In view of the above problems, a temperature sensing element and a temperature and pressure safety valve are urgently needed to solve the above problems. Utility Model Content
[0006] The utility model aims to provide a temperature sensing element and a temperature and pressure safety valve, which can ensure a good sealing effect on the temperature control medium, thereby increasing the service life of the entire temperature sensing element, and at the same time can reduce the processing cost of the seal and the piston rod.
[0007] To achieve this purpose, the utility model adopts the following technical solutions:
[0008] Temperature sensing element, including:
[0009] An outer shell, wherein a temperature control medium is installed in the outer shell;
[0010] A sealing member, when the vacuum degree in the outer shell reaches a preset vacuum degree, the sealing member is riveted into the outer shell, and the sealing member is sealed on the temperature control medium;
[0011] The piston rod is installed in the outer shell and is located on the sealing element.
[0012] As an optional solution, the piston rod abuts against the sealing member.
[0013] As an optional solution, the sealing member is a sealing gasket or a sealing ball.
[0014] As an optional solution, the temperature sensing element further includes:
[0015] A push rod, one end of which is in contact with the top end of the piston rod, and the other end of which extends out of the outer shell. The piston rod can push the push rod upward along the Z axis under the liquefaction of the temperature control medium.
[0016] As an optional solution, one end of the push rod is connected to a cylindrical boss, the cylindrical boss is sealed in the outer shell, and the cylindrical boss is coaxially abutted against the top end of the piston rod.
[0017] As an optional solution, the temperature sensing element further includes:
[0018] An elastic member, wherein the elastic member is sleeved on the push rod, and one end of the elastic member abuts against the cylindrical boss;
[0019] A fixing seat is fixedly disposed in the outer shell, the fixing seat is sleeved on the top rod, and the other end of the elastic member abuts against the fixing seat.
[0020] As an optional solution, the outer diameter of the fixing seat is larger than the inner diameter of the outer shell, so that the fixing seat is inserted into the outer shell through an opening on the outer shell, and the other end of the push rod extends through the opening to the outside of the outer shell.
[0021] As an optional solution, the outer shell is made of a heat-conducting material.
[0022] A temperature and pressure safety valve comprises the temperature sensing element as described above.
[0023] As an optional solution, the temperature and pressure safety valve further includes:
[0024] A valve body and a pressure relief assembly, wherein the pressure relief assembly is arranged in the valve body, and a container interface and a pressure relief port are respectively arranged on the valve body, and the temperature sensing element can push the pressure relief assembly upward along the Z axis to connect the container interface with the pressure relief port.
[0025] The beneficial effects of the utility model are:
[0026] The temperature control medium is first installed in the outer shell, and then the outer shell is evacuated or the outer shell is placed in a vacuum environment, so that the vacuum degree in the outer shell is a preset vacuum degree, and then the seal is riveted into the outer shell, and the seal is sealed on the temperature control medium, so that the seal can be sealed and compacted on the temperature control medium to avoid the risk of leakage of the temperature control medium; the piston rod is then installed in the outer shell and located on the seal; since the seal is riveted and assembled to the temperature control medium under a vacuum state, the sealing and compacting effect between the seal and the temperature control medium can be guaranteed; therefore, it is no longer necessary to set an exhaust hole in the seal, and correspondingly, it is no longer necessary to set a guide protrusion for sealing the exhaust hole on the surface of the piston rod that contacts the seal; on the one hand, the structure of the seal and the piston rod can be relatively simple, the processing is convenient, and the processing cost is reduced; on the other hand, it can be ensured that the sealing effect of the seal will not be affected during the assembly process between the piston rod and the seal, and the sealing effect of the seal on the temperature control medium can be ensured to be good, thereby avoiding the risk of leakage of the temperature control medium when used for a long time in the later stage, thereby improving the service life of the entire temperature sensing element.
[0027] The temperature and pressure safety valve in the utility model, because it includes the above-mentioned temperature sensing element, has a simple structure, can reduce processing costs, and has good sealing performance, can avoid the risk of leakage of temperature control medium, thereby increasing the service life of the entire temperature and pressure safety valve. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 It is a schematic diagram of the assembly structure between the valve body and the temperature sensing element provided by the utility model;
[0029] Figure 2 This is a schematic diagram of the structure of the temperature sensing element provided by the utility model. Figure 1 ;
[0030] Figure 3 It is a cross-sectional view of the temperature sensing element provided by the utility model;
[0031] Figure 4 This is a schematic diagram of the structure of the temperature sensing element (excluding the outer shell) provided by the utility model Figure 2 .
[0032] Description of reference numerals:
[0033] 10-valve body; 101-container interface; 102-pressure relief port;
[0034] 1-outer shell; 11-opening;
[0035] 2-seal; 3-piston rod; 4-thrust rod; 41-cylindrical boss; 5-elastic member; 6-fixed seat; 7-temperature control medium. DETAILED DESCRIPTION
[0036] 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.
[0037] 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.
[0038] 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.
[0039] This embodiment provides a temperature sensing element and a temperature and pressure safety valve including the temperature sensing element. Figure 1 As shown, the temperature and pressure safety valve also includes a valve body 10 and a pressure relief assembly. The pressure relief assembly is arranged in the valve body 10. The valve body 10 is provided with a container interface 101 and a pressure relief port 102. The container interface 101 is used to connect the container, and the temperature sensing element is located in the container to sense the temperature in the container. When the temperature sensing element senses that the temperature in the container is too high, it can push the pressure relief assembly upward along the Z axis to connect the container interface 101 and the pressure relief port 102 to achieve the pressure relief function inside the container. In this embodiment, the container can be a water container.
[0040] It is worth noting 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 temperature and pressure safety valve in this embodiment is a common valve structure in the prior art. The specific structure and working principle of the valve body 10 and the pressure relief assembly in the temperature and pressure safety valve can refer to the temperature and pressure safety valve in the prior art, and will not be described in detail here.
[0041] Specifically, Figures 1 to 4 As shown, the temperature sensing element includes an outer shell 1, a seal 2 and a piston rod 3; wherein a temperature control medium 7 is installed in the outer shell 1; when the vacuum degree in the outer shell 1 is a preset vacuum degree, the seal 2 is riveted and assembled into the outer shell 1 so that the seal 2 can be sealed and pressed on the temperature control medium 7; the piston rod 3 is installed in the outer shell 1 and is located on the seal 2. The temperature control medium 7 in this embodiment can be paraffin.
[0042] Compared with the prior art, the temperature sensing element in this embodiment changes the press-riveting assembly method of the seal 2, and correspondingly simplifies the structure of the seal 2 and the piston rod 3; by first installing the temperature control medium 7 into the outer shell 1, and then evacuating the outer shell 1 or placing the outer shell 1 in a vacuum environment, when the vacuum degree in the outer shell 1 reaches a preset vacuum degree, the seal 2 is then riveted into the outer shell 1, and the seal 2 is sealed on the temperature control medium 7, so that the seal 2 can be sealed and compacted on the temperature control medium 7 to avoid the risk of leakage of the temperature control medium 7; then the piston rod 3 is installed in the outer shell 1 and located on the seal 2; because the seal 2 is press-riveted to the temperature control medium 7 under vacuum On the medium 7, the sealing and compacting effect between the seal 2 and the temperature control medium 7 can be guaranteed; therefore, it is no longer necessary to set an exhaust hole in the seal 2, and correspondingly, it is no longer necessary to set a guide protrusion for sealing the exhaust hole on the surface of the piston rod 3 that contacts the seal 2; on the one hand, the structure of the seal 2 and the piston rod 3 can be made simpler, and the processing is convenient, thereby reducing the processing cost; on the other hand, it can ensure that the sealing effect of the seal 2 will not be affected during the assembly process between the piston rod 3 and the seal 2, and can ensure that the seal 2 has a good sealing effect on the temperature control medium 7, thereby avoiding the risk of leakage of the temperature control medium 7 when used for a long time in the later stage, thereby improving the service life of the entire temperature sensing element.
[0043] Specifically, since there is no need for an exhaust hole on the seal 2 and no need for a guide protrusion on the piston rod 3, the surface of the seal 2 and the surface of the piston rod 3 can be completely abutted and fitted, thereby ensuring a better sealing effect between the seal 2 and the piston rod 3. Figure 3 shown.
[0044] Furthermore, the temperature sensing element further includes a detection member (not shown in the figure), which is used to detect the vacuum degree in the outer shell 1, so as to ensure that the vacuum degree in the outer shell 1 accurately reaches the preset vacuum degree, which is conducive to the smooth riveting assembly of the seal 2 to the temperature control medium 7, and ensure the sealing and compacting effect between the seal 2 and the temperature control medium 7, and avoid the problem that the seal 2 cannot be pressed down or is not compacted on the temperature control medium 7. There is no limitation on the value of the preset vacuum degree, as long as it can ensure that the seal 2 is compacted and sealed on the temperature control medium 7.
[0045] It is worth noting that after the seal 2 is riveted and assembled on the temperature control medium 7, the above-mentioned detection component can be removed from the outer shell 1, making the structure of the entire temperature sensing element simpler; and the removed detection component can be reused, saving costs. The detection component in this embodiment can specifically be a vacuum sensor.
[0046] Furthermore, the seal 2 is a sealing pad or a sealing ball, and the specific structure of the seal 2 is not limited, as long as the sealing effect can be achieved. In this embodiment, the seal 2 is specifically a sealing pad, and correspondingly, the surface of the piston rod 3 that contacts the seal 2 is a plane; if the seal 2 is set as a sphere, correspondingly, the surface of the piston rod 3 that contacts the seal 2 is a curved surface, so that it can be ensured that the surface of the seal 2 and the surface of the piston rod 3 can be completely abutted and fitted.
[0047] Specifically, Figures 1 to 4 As shown, the temperature sensing element also includes a push rod 4, one end of which is in contact with the top end of the piston rod 3, and the other end of the push rod 4 extends out of the outer shell 1 to push the pressure relief component. The piston rod 3 can push the push rod 4 upward along the Z axis under the liquefaction of the temperature control medium 7, so that the push rod 4 can push the pressure relief component, thereby connecting the container interface 101 and the pressure relief port 102 by moving the pressure relief component, so that the heat or pressure in the container can be discharged through the container interface 101, the interior of the valve body 10 and the pressure relief port 102 in sequence.
[0048] Specifically, if Figure 3 and Figure 4 As shown, one end of the push rod 4 is connected to a cylindrical boss 41, and the cylindrical boss 41 is sealed in the outer shell 1, and the cylindrical boss 41 is coaxially abutted against the top of the piston rod 3 to achieve the sealing effect of the cylindrical boss 41, thereby further avoiding the risk of leakage of the temperature control medium 7 through the cylindrical boss 41, and further making the sealing effect of the entire temperature sensing element better. In this embodiment, the push rod 4 and the cylindrical boss 41 are an integrally formed structure.
[0049] Furthermore, if Figure 3 and Figure 4 As shown, the temperature sensing element further includes an elastic member 5 and a fixing seat 6; wherein the elastic member 5 is sleeved on the top rod 4, and one end of the elastic member 5 abuts against the cylindrical boss 41; the fixing seat 6 is fixedly arranged in the outer shell 1, the fixing seat 6 is sleeved on the top rod 4, and the other end of the elastic member 5 abuts against the fixing seat 6, so as to limit the elastic member 5 between the cylindrical boss 41 and the fixing seat 6. The elastic member 5 in this embodiment can be specifically a compression spring.
[0050] Specifically, when the temperature in the container rises, the heat in the container is transferred to the temperature control medium 7 through the outer shell 1, so that the temperature control medium 7 is heated and changes from a solid state to a liquid state, and the volume of the temperature control medium 7 in the outer shell 1 expands, and the expansion force pushes the seal 2, the piston rod 3 and the push rod 4 to move upward along the Z axis, so that the push rod 4 abuts and pushes the pressure relief assembly upward along the Z axis, so that the container interface 101 is connected with the pressure relief port 102; at this time, since the fixing seat 6 remains stationary, the fixing seat 6 has a blocking and limiting effect on the elastic member 5, so that the elastic member 5 is compressed.
[0051] When the temperature in the container decreases, the temperature control medium 7 changes from a liquid state to a fixed state at a lower temperature. At this time, the volume of the temperature control medium 7 in the outer shell 1 is reduced, and the elastic action of the elastic member 5 drives the push rod 4, the piston rod 3 and the sealing member 2 to move downward along the Z axis to achieve an automatic reset function; at this time, since there is no push effect of the push rod 4, the pressure relief assembly can automatically reset, thereby isolating the container interface 101 and the pressure relief port 102.
[0052] It is worth noting that the outer shell 1 is made of a heat-conducting material, so that the heat between the container and the temperature control medium 7 can be transferred through the outer shell 1, which is conducive to transferring the heat in the container to the temperature control medium 7 in time, so that the temperature control medium 7 can change its state according to the heat transferred by the outer shell 1, thereby ensuring the timeliness and accuracy of the pressure relief in the container.
[0053] Furthermore, if Figures 2 to 4 As shown, the outer diameter of the fixing seat 6 is larger than the inner diameter of the outer shell 1, so that the fixing seat 6 is inserted into the outer shell 1 through the opening 11 on the outer shell 1 through interference, so that the fixing seat 6 can be fixed in the outer shell 1; the use of the interference fit fixing method can make the fixing of the fixing seat 6 in the outer shell 1 simple and convenient. Among them, the other end of the push rod 4 passes through the opening 11 and extends to the outside of the outer shell 1, so that the push rod 4 can be easily abutted against the pressure relief component.
[0054] It is worth noting that the push rod 4 in this embodiment specifically abuts against the abutment in the pressure relief assembly, and the abutment is made of metal. By making the push rod 4 abut against the abutment, compared with the prior art in which the push rod 4 abuts against the rubber gasket in the pressure relief assembly, it is possible to avoid the push rod 4 from piercing the abutment, thereby increasing the service life of the abutment; at the same time, it is possible to avoid pre-compression when the push rod 4 abuts against the abutment, thereby ensuring that the pressure relief can be opened in time according to the temperature, thereby ensuring the timeliness of the pressure relief of the temperature and pressure safety valve.
[0055] The assembly process of the temperature sensing element in this embodiment is as follows:
[0056] First, the temperature control medium 7 is assembled into the outer shell 1, and then the seal 2 is riveted and assembled onto the temperature control medium 7 in a vacuum environment, so that the seal 2 seals the temperature control medium 7; then the piston rod 3 is assembled into the outer shell 1 and is located on the seal 2, and the push rod 4 is assembled into the outer shell 1, and the cylindrical boss 41 on one end of the push rod 4 is abutted against the top end of the piston rod 3, and the other end of the push rod 4 passes through the opening 11 to the outside of the outer shell 1.
[0057] Then, the elastic member 5 is sleeved onto the top rod 4, and the fixing seat 6 is sleeved onto the top rod 4, and the fixing seat 6 is inserted into the outer shell 1 through the opening 11 on the outer shell 1 to fix the fixing seat 6 in the outer shell 1; thus, the entire assembly process of the temperature sensing element is completed.
[0058] The temperature sensing element in the present embodiment solves the exhaust problem of the seal 2 during riveting assembly by making the vacuum degree in the outer shell 1 reach a preset vacuum degree, and then riveting the seal 2 into the outer shell 1, and making the seal 2 seal on the temperature control medium 7, so as to solve the exhaust problem of the seal 2 during riveting assembly, and makes it unnecessary to provide an exhaust hole on the seal 2, and unnecessary to provide a guide protrusion on the piston rod 3, so that the structure of the seal 2 and the piston rod 3 is simple and the processing cost is low; and it can ensure that the seal 2 has a good sealing effect on the temperature control medium 7 during the assembly process, and there is no risk of leakage of the temperature control medium 7, thereby improving the service life of the entire temperature sensing element.
[0059] 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. A temperature sensing element, characterized in that: include: An outer shell (1), wherein a temperature control medium (7) is installed in the outer shell (1); A sealing member (2), wherein when the vacuum degree in the outer shell (1) reaches a preset vacuum degree, the sealing member (2) is riveted into the outer shell (1), and the sealing member (2) is sealed on the temperature control medium (7); A piston rod (3) is installed in the outer shell (1) and is located on the sealing element (2).
2. The temperature sensing element according to claim 1, characterized in that: The piston rod (3) abuts against the sealing member (2).
3. The temperature sensing element according to claim 1, characterized in that: The sealing element (2) is a sealing pad or a sealing ball.
4. The temperature sensing element according to any one of claims 1 to 3, characterized in that: The temperature sensing element also includes: A push rod (4), one end of which is in contact with the top end of the piston rod (3), and the other end of which extends out of the outer shell (1); the piston rod (3) is capable of pushing the push rod (4) upward along the Z axis under the liquefaction of the temperature control medium (7).
5. The temperature sensing element according to claim 4, characterized in that: One end of the push rod (4) is connected to a cylindrical boss (41), the cylindrical boss (41) is sealed inside the outer shell (1), and the cylindrical boss (41) is coaxially abutted against the top end of the piston rod (3).
6. The temperature sensing element according to claim 5, characterized in that: The temperature sensing element also includes: An elastic member (5), wherein the elastic member (5) is sleeved on the push rod (4), and one end of the elastic member (5) abuts against the cylindrical boss (41); A fixed seat (6), the fixed seat (6) is fixedly arranged in the outer shell (1), the fixed seat (6) is sleeved on the top rod (4), and the other end of the elastic member (5) is abutted against the fixed seat (6).
7. The temperature sensing element according to claim 6, characterized in that: The outer diameter of the fixing seat (6) is greater than the inner diameter of the outer shell (1), so that the fixing seat (6) is inserted into the outer shell (1) through an opening (11) on the outer shell (1) by interference, and the other end of the push rod (4) passes through the opening (11) and extends outside the outer shell (1).
8. The temperature sensing element according to any one of claims 1 to 3, characterized in that: The outer shell (1) is made of a heat-conducting material.
9. Temperature and pressure safety valve, characterized in that: The invention comprises a temperature sensing element as claimed in any one of claims 1 to 8.
10. The temperature and pressure safety valve according to claim 9, characterized in that: The temperature and pressure safety valve also includes: A valve body (10) and a pressure relief assembly, wherein the pressure relief assembly is arranged in the valve body (10), and a container interface (101) and a pressure relief port (102) are respectively arranged on the valve body (10), and the temperature sensing element can push the pressure relief assembly upward along the Z axis to connect the container interface (101) and the pressure relief port (102).