Pressure relief valve and pressure relief system
By installing a detachable main body sheath and heating wire on the outside of the pressure relief valve body, the problem of the pressure relief valve's function being affected in a low-temperature environment is solved, and stable operation at different temperatures is achieved.
Patent Information
- Application Number
- CN202423240718.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-12-26
AI Technical Summary
The pressure relief valve's pressure relief function is affected in low-temperature environments, resulting in insufficient operational stability of the system to be pressure relieved.
Design a detachable body sleeve for the pressure relief valve body, which is installed on the outside of the pressure relief valve body through a through hole to increase the temperature, and can be equipped with a heating wire for further heating to adapt to different temperature environments.
This improves the operational stability of the pressure relief valve at different temperatures, ensuring the system operates normally under extreme temperature conditions.
Smart Images
Figure CN223483531U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of switchgear technology, specifically relating to a pressure relief valve and a pressure relief system. Background Technology
[0002] A pressure relief valve (PRV), also commonly known as a safety valve or explosion-proof valve, is a safety device used to prevent pressure in pipelines, containers, or equipment from exceeding a predetermined safe level. The purpose of a pressure relief valve is to release pressure when the pressure in the system to be relieved reaches a specific value, thereby protecting the safety of the system and the operators.
[0003] Current pressure relief valves have high temperature requirements; their pressure relief function is affected in low-temperature environments, potentially leading to pressure risks in the system being relieved. Therefore, there is a need in this field for a pressure relief valve with greater adaptability to different temperatures, improving the operational stability of the system under varying temperatures. Utility Model Content
[0004] To address the problems existing in the prior art, a pressure relief valve and a pressure relief system are proposed. This pressure relief valve has stronger adaptability to different temperatures and can improve the operational stability of the system to be pressure relieved at different temperatures.
[0005] This application provides the following solutions.
[0006] In a first aspect, this application provides a pressure relief valve, comprising: a pressure relief valve body, a first connection port, a second connection port, and a body sheath, wherein the first connection port and the second connection port are disposed on the pressure relief valve body, and the body sheath is detachably mounted on the pressure relief valve body;
[0007] The main body of the pressure relief valve is connected to the system to be pressure-relieved through the first connection port, and the main body of the pressure relief valve is connected to the pressure relief pipeline through the second connection port;
[0008] The inner shape of the main body sheath matches the outer shape of the pressure relief valve body. The main body sheath is provided with a through hole. The position of the through hole on the main body sheath corresponds to the position of the second connection port on the pressure relief valve body. The diameter of the through hole is larger than the diameter of the second connection port.
[0009] The main body sleeve is used to be installed on the outside of the pressure relief valve body through the through hole from the second connection port to increase the temperature of the pressure relief valve body.
[0010] As one possible implementation, the second connector is a quick-connect type.
[0011] As one possible implementation, the pressure relief valve body is cylindrical, the inner cavity of the body sleeve is cylindrical, and the body sleeve includes a sleeve sidewall and a sleeve end face;
[0012] One end of the sheath sidewall is connected to the sheath end face, and the other end of the sheath sidewall is an open outlet.
[0013] As one possible implementation, the second connection port is located on the end face of the pressure relief valve body, and the through hole is also located on the end face of the body sheath.
[0014] As one possible implementation, a heating wire is provided inside the main body sheath;
[0015] The heating wire is used to increase the temperature of the pressure relief valve body when the ambient temperature is below the temperature threshold.
[0016] In one possible implementation, the pressure relief valve is preloaded by a spring and includes a spring, a valve disc, and a valve seat;
[0017] The spring is connected to the valve disc, and the valve disc and the valve seat are in close contact under the preload of the spring. As one possible implementation, the main sheath is made of a heat-shrinkable material.
[0018] As one possible implementation, a pressure relief valve is used in fuel cell vehicles;
[0019] The pressure relief valve body is connected to the fuel cell system through the first connection port, and the pressure relief valve body is connected to the tailpipe through the second connection port.
[0020] Secondly, this application provides a pressure relief system, including a pressure relief valve and a fuel cell system. The pressure relief valve includes: a pressure relief valve body, a first connection port, a second connection port, and a body sheath. The first connection port and the second connection port are disposed on the pressure relief valve body, and the body sheath is detachably installed on the pressure relief valve body.
[0021] The pressure relief valve body is connected to the fuel cell system through the first connection port, and the pressure relief valve body is connected to the pressure relief pipe through the second connection port.
[0022] The inner shape of the main body sheath matches the outer shape of the pressure relief valve body. The main body sheath is provided with a through hole. The position of the through hole on the main body sheath corresponds to the position of the second connection port on the pressure relief valve body. The diameter of the through hole is larger than the diameter of the second connection port.
[0023] The main body sleeve is used to be installed on the outside of the pressure relief valve body through the through hole from the second connection port. The main body sleeve is used to be installed on the outside of the pressure relief valve body to increase the temperature of the pressure relief valve body.
[0024] As one possible implementation, the second connector is a quick-connect type.
[0025] The pressure relief valve provided in this application includes a body sleeve that matches the external shape of the valve body. This body sleeve can be installed outside the valve body through a through-hole from the second connection port when the valve body temperature is low, thereby increasing the temperature of the valve body. Therefore, the pressure relief valve provided in this application has stronger adaptability to different temperatures and can improve the operational stability of the system to be pressure-relieved at different temperatures.
[0026] Other advantages of this application will be explained in more detail with reference to the following description and figures.
[0027] It should be understood that the above description is merely an overview of the technical solution of this application, so as to enable a clearer understanding of the technical means of this application and thus allow for its implementation in accordance with the contents of the specification. To make the above and other objects, features, and advantages of this application more apparent and understandable, specific embodiments of this application are illustrated below. Attached Figure Description
[0028] By reading the detailed description of the exemplary embodiments below, those skilled in the art will understand the advantages and benefits described herein, as well as other advantages and benefits. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:
[0029] Figure 1 A schematic diagram of a pressure relief valve provided in an embodiment of this application;
[0030] Figure 2 A schematic diagram of a main body sheath provided for an embodiment of this application;
[0031] Figure 3 A schematic diagram of a pressure relief valve body provided in an embodiment of this application;
[0032] Figure 4 A schematic diagram of another main body sheath provided in an embodiment of this application;
[0033] Figure 5 This is a schematic diagram of a pressure relief system provided in an embodiment of this application.
[0034] In the accompanying drawings, the components represented by the reference numerals are as follows:
[0035] Pressure relief valve body 100; first connection port 200; second connection port 300; body sheath 400; through hole 401; heating wire 402; open outlet 403; sheath side wall 404; sheath end face 405; pressure relief valve 1000; fuel cell system 2000.
[0036] In the drawings, the same or corresponding reference numerals denote the same or corresponding parts. Detailed Implementation
[0037] Exemplary embodiments of this application will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of this application are shown in the drawings, it should be understood that this application can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of this application and to fully convey the scope of this application to those skilled in the art.
[0038] In the description of embodiments of this application, it should be understood that terms such as "comprising" or "having" are intended to indicate the presence of the disclosed features, numbers, steps, actions, components, portions, or combinations thereof in this specification, and do not exclude the possibility of the presence of one or more other features, numbers, steps, actions, components, portions, or combinations thereof. The terms "first," "second," etc., are used only for ease of description to distinguish identical or similar technical features and should not be construed as indicating or implying the relative importance or number of these technical features. Thus, a feature defined by "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of embodiments of this application, unless otherwise stated, the term "multiple" means two or more.
[0039] Unless otherwise stated, " / " signifies "or," for example, A / B can mean either A or B. "And / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. For ease of description, spatial relation terms such as "below," "under," "above," and "upper" may be used here to describe the relationship between one element or feature shown in the accompanying drawings and other elements or features. It will be understood that these spatial relation terms are intended to include directions other than those depicted in the accompanying drawings for devices in use or operation.
[0040] It should also be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.
[0041] See Figure 1 The figure is a schematic diagram of a pressure relief valve provided in an embodiment of this application.
[0042] The pressure relief valve provided in this application embodiment includes: a pressure relief valve body 100, a first connection port 200, a second connection port 300, and a body sheath 400. The first connection port 200 and the second connection port 300 are disposed on the pressure relief valve body 100, and the body sheath 400 is detachably installed on the pressure relief valve body 100.
[0043] The pressure relief valve body 100 is connected to the system to be pressure-relieved through the first connection port 200, and the pressure relief valve body 100 is connected to the pressure relief pipeline through the second connection port 300;
[0044] like Figure 2 The main body sleeve 400 shown has an inner cavity shape that matches the outer shape of the pressure relief valve body 100. The main body sleeve 400 is provided with a through hole 401. The position of the through hole 401 on the main body sleeve 400 corresponds to the position of the second connection port 300 on the pressure relief valve body 100. The diameter of the through hole 401 is larger than the diameter of the second connection port 300.
[0045] The main body sleeve 400 is used to be installed outside the pressure relief valve body 100 through the through hole 401 from the second connection port 300 to increase the temperature of the pressure relief valve body 100.
[0046] In this embodiment, the pressure relief valve body 100 may contain functional components such as a spring, valve disc, and valve seat. The inner shape of the main body sleeve 400 in this embodiment matches the outer shape of the pressure relief valve body 100, allowing the main body sleeve 400 to be installed on the outside of the pressure relief valve body 100, thereby increasing the temperature of the pressure relief valve body 100. In practical applications, when the ambient temperature is about to drop, such as before winter, the main body sleeve 400 can be installed on the outside of the pressure relief valve body 100 to increase its temperature. Furthermore, the main body sleeve 400 in this embodiment also has a through hole 401 corresponding to the second connection port 300, allowing the second connection port 300 to pass through the through hole 401, thus enabling the main body sleeve 400 to be installed on the outside of the pressure relief valve body 100.
[0047] It should be noted that the pressure relief function of a pressure relief valve may be affected when the temperature is too low, especially for pressure relief valves that rely on springs for preload. In spring-loaded pressure relief valves, the spring ensures tight contact between the valve disc and the valve seat. Since the elasticity of the spring decreases at low temperatures, the function of the pressure relief valve is significantly affected at low temperatures. Therefore, this application, when the temperature of the pressure relief valve body is low, installs the body sleeve through the through-hole 401 from the second connection port to the outside of the pressure relief valve body to increase the temperature of the valve body. Therefore, the pressure relief valve provided by this application has stronger adaptability to different temperatures and can improve the operational stability of the system to be pressure-relieved at different temperatures.
[0048] As one possible implementation, the main body sleeve 400 can also be removed from the outside of the pressure relief valve body 100 to reduce the temperature of the pressure relief valve body 100 when the ambient temperature rises, such as during spring or summer. It should be noted that, in this embodiment, the main body sleeve 400 can also be easily removed from the pressure relief valve body 100 through the through hole 401, so that the temperature of the pressure relief valve body 100 does not become too high and affect the function of the pressure relief valve.
[0049] In this embodiment, the second connection port 300 can be a quick-connect structure. The second connection port 300 connects to a pressure relief pipe and is used to discharge fluid into the pressure relief pipe to release pressure when the pressure in the system to be relieved is too high. The quick-connect structure between the second connection port 300 and the pressure relief pipe improves assembly and maintenance efficiency and facilitates the installation and removal of the main body sleeve 400. When the main body sleeve 400 needs to be installed, the quick-connect structure between the second connection port 300 and the pressure relief pipe can be disconnected, and the main body sleeve can be installed outside the pressure relief valve body through the through hole 401 from the second connection port 300, and then the quick-connect structure can be reconnected. Similarly, the main body sleeve can also be disassembled using the quick-connect structure, which will not be elaborated further in this embodiment.
[0050] In practical applications, pressure relief valves can be used in fuel cell vehicles. When used in a fuel cell vehicle, the pressure relief valve can prevent the fuel cell system from experiencing excessive pressure. Specifically, the pressure relief valve body 100 can be connected to the fuel cell system through the first connection port 200, and the pressure relief valve body 100 can be connected to the exhaust pipe through the second connection port 300.
[0051] In this embodiment, the main sheath can be made of a heat-shrinkable material, such as polyvinyl chloride (PVC), and this embodiment is not limited thereto. As one possible implementation, such as... Figure 2 The cross-section of the main body sleeve shown in this embodiment indicates that a heating wire 402 may be disposed inside the main body sleeve 400. The heating wire 402 may be evenly distributed within the main body sleeve 400 to enhance the heat preservation function of the main body sleeve 400, allowing the pressure relief valve to adapt to lower operating temperatures. In practical applications, the heating wire 402 can be activated to heat when the ambient temperature is below a temperature threshold. The specific distribution of the heating wire 402 is not limited in this embodiment. In this embodiment, the heating wire 402 can generate heat through electrical conductivity, thereby increasing the temperature of the main body sleeve 400 and consequently increasing the temperature of the pressure relief valve body 100.
[0052] As one possible implementation method, such as Figure 3 As shown, the pressure relief valve body 100 in this embodiment can be cylindrical. Accordingly, as... Figure 4As shown, the inner cavity of the main sheath 400 is also cylindrical. The main sheath 400 includes a sheath sidewall 404 and a sheath end face 405; one end of the sheath sidewall 404 is connected to the sheath end face 405, and the other end of the sheath sidewall 404 is an open outlet 403. In this embodiment, if the second connection port 300 is provided on the end face of the pressure relief valve body 100, then the through hole 401 is also provided on the sheath end face of the main sheath 400. When the main sheath 400 is installed on the pressure relief valve body 100, the second connection port 300 can just protrude from the through hole 401.
[0053] Based on the pressure relief valve provided in the above embodiments, this application also provides a pressure relief system.
[0054] like Figure 5 As shown, the pressure relief system provided in this application embodiment includes a pressure relief valve 1000 and a fuel cell system 2000. The pressure relief valve 1000 includes: a pressure relief valve body, a first connection port, a second connection port, and a body sheath, wherein the first connection port and the second connection port are disposed on the pressure relief valve body, and the body sheath is detachably installed on the pressure relief valve body.
[0055] The main body of the pressure relief valve is connected to the fuel cell system 2000 through the first connection port, and the main body of the pressure relief valve is connected to the pressure relief pipe through the second connection port.
[0056] The inner shape of the main body sheath matches the outer shape of the pressure relief valve body. The main body sheath is provided with a through hole. The position of the through hole on the main body sheath corresponds to the position of the second connection port on the pressure relief valve body. The diameter of the through hole is larger than the diameter of the second connection port.
[0057] The main body sleeve is used to be installed on the outside of the pressure relief valve body through the through hole from the second connection port. The main body sleeve is used to be installed on the outside of the pressure relief valve body to increase the temperature of the pressure relief valve body.
[0058] As one possible implementation, the second connector is a quick-connect type.
[0059] As one possible implementation, the pressure relief valve body is cylindrical, the inner cavity of the body sleeve is cylindrical, and the body sleeve includes a sleeve sidewall and a sleeve end face; one end of the sleeve sidewall is connected to the sleeve end face, and the other end of the sleeve sidewall is an open outlet.
[0060] As one possible implementation, the second connection port is located on the end face of the pressure relief valve body, and the through hole is also located on the end face of the body sheath.
[0061] As one possible implementation, a heating wire is provided inside the main body sheath; the heating wire is used to increase the temperature of the pressure relief valve body when the ambient temperature is below a temperature threshold.
[0062] As one possible implementation, a spring provides preload in the pressure relief valve, ensuring tight contact between the valve disc and the valve seat.
[0063] As one possible implementation, the main sheath is made of heat-shrinkable material.
[0064] In one possible implementation, the pressure relief valve body is connected to the fuel cell system through the first connection port, and the pressure relief valve body is connected to the tailpipe through the second connection port.
[0065] It should be noted that the pressure relief system in the embodiments of this application may include various components of the aforementioned pressure relief valve embodiments and achieve the same effect and function, which will not be repeated here.
[0066] While illustrative embodiments of this application have been detailed and described in the accompanying drawings and foregoing description, they should be considered illustrative rather than restrictive. It should be understood that only certain exemplary embodiments have been shown and described, and all variations and modifications intended to protect within the spirit and scope of the claimed invention are intended to be protected. It should be understood that while the use of terms such as preferred, preferred, or more preferred in the above description to indicate that such described features may be more desirable, it may not be necessary, and implementations without these features may be contemplated, for example, within the scope of the invention defined by the appended claims. When reading the claims, the use of terms such as “a,” “an,” “at least one,” or “at least a portion” is not intended to limit the claim to one item unless specifically stated otherwise in the claim. When the language “at least a portion” and / or “a portion” is used, an item may include a portion and / or the entire item unless specifically stated otherwise.
[0067] While the spirit and principles of this application have been described above with reference to several specific embodiments, it should be understood that this application is not limited to the disclosed specific embodiments, and the division of aspects does not imply that features in these aspects cannot be combined. This application is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims
1. A pressure relief valve, characterized in that, include: The pressure relief valve body comprises a first connection port, a second connection port, and a body sheath. The first connection port and the second connection port are disposed on the pressure relief valve body, and the body sheath is detachably mounted on the pressure relief valve body. The pressure relief valve body is connected to the system to be pressure-relieved through the first connection port, and the pressure relief valve body is connected to the pressure relief pipeline through the second connection port; The inner shape of the main body sheath matches the outer shape of the pressure relief valve body. The main body sheath is provided with a through hole. The position of the through hole on the main body sheath corresponds to the position of the second connection port on the pressure relief valve body. The diameter of the through hole is larger than the diameter of the second connection port. The main body sheath is used to be installed outside the pressure relief valve body through the through hole from the second connection port to increase the temperature of the pressure relief valve body.
2. The pressure relief valve according to claim 1, characterized in that, The second connector is a quick-connect type.
3. The pressure relief valve according to claim 1, characterized in that, The main body of the pressure relief valve is cylindrical, the inner cavity of the main body sleeve is cylindrical, and the main body sleeve includes a sleeve sidewall and a sleeve end face; One end of the sheath sidewall is connected to the sheath end face, and the other end of the sheath sidewall is an open outlet.
4. The pressure relief valve according to claim 3, characterized in that, The second connection port is located on the end face of the pressure relief valve body, and the through hole is also located on the end face of the body sheath.
5. The pressure relief valve according to claim 1, characterized in that, A heating wire is installed inside the main sheath; The heating wire is used to increase the temperature of the pressure relief valve body when the ambient temperature is below a temperature threshold.
6. The pressure relief valve according to claim 1, characterized in that, The pressure relief valve includes a spring, a valve disc, and a valve seat; The spring is connected to the valve disc, and the valve disc and the valve seat are in close contact under the preload of the spring.
7. The pressure relief valve according to claim 1, characterized in that, The main sheath is made of heat-shrinkable material.
8. The pressure relief valve according to any one of claims 1-7, characterized in that, The pressure relief valve is used in fuel cell vehicles; The pressure relief valve body is connected to the fuel cell system through the first connection port, and the pressure relief valve body is connected to the tailpipe through the second connection port.
9. A pressure relief system, characterized in that, The system includes a pressure relief valve and a fuel cell system. The pressure relief valve includes: a pressure relief valve body, a first connection port, a second connection port, and a body sheath. The first connection port and the second connection port are disposed on the pressure relief valve body, and the body sheath is detachably mounted on the pressure relief valve body. The pressure relief valve body is connected to the fuel cell system through the first connection port, and the pressure relief valve body is connected to the pressure relief pipe through the second connection port; The inner shape of the main body sheath matches the outer shape of the pressure relief valve body. The main body sheath is provided with a through hole. The position of the through hole on the main body sheath corresponds to the position of the second connection port on the pressure relief valve body. The diameter of the through hole is larger than the diameter of the second connection port. The main body sleeve is used to be installed to the outside of the pressure relief valve body through the through hole from the second connection port. The main body sleeve is used to be installed on the outside of the pressure relief valve body to increase the temperature of the pressure relief valve body.
10. The pressure relief system according to claim 9, characterized in that, The second connector is a quick-connect type.