Pressure release valve and energy storage container with same

Abstract

The utility model provides a pressure relief valve and an energy storage container with the same, the pressure relief valve comprises a pressure relief valve body, the pressure relief valve body is provided with a pressure relief cavity and a pressure relief port, the pressure relief port is communicated with the pressure relief cavity, and the pressure relief cavity is used for being communicated with a box body to be subjected to pressure relief; the pressure relief valve cover is movably connected with the pressure relief valve body, and the pressure relief valve cover is provided with a blocking position for blocking the pressure relief opening and an avoiding position for avoiding the pressure relief opening; one end of the elastic part is connected with the pressure relief valve cover, the other end of the elastic part is used for being connected with an installation foundation, the elastic part is used for applying pre-tightening force to the pressure relief valve cover so that the pressure relief valve cover can be located at the blocking position, and under the condition that the pressure in the pressure relief cavity is larger than a preset value, the pressure relief valve cover moves to the avoiding position relative to the pressure relief valve body. Compared with a screw joint structure of a pressure release valve cover body in the prior art, the pressure release valve cover in the scheme can be burst open by small pressure so as to release the pressure in the box body to be released.

Description

Technical Field

[0001] This utility model relates to the technical field of pressure relief valves, and more specifically, to a pressure relief valve and an energy storage container having the same. Background Technology

[0002] Energy storage containers often use pressure relief valves to release internal pressure to meet the safety requirements of energy storage containers. That is, when the gas or flame inside the container reaches a certain pressure, it will force open the pressure relief valve cover, thereby releasing the pressure.

[0003] Currently, the pressure relief valve cover is locked to the energy storage container with screws. Only when the pressure inside the energy storage container is high enough can the pressure relief valve cover be opened. However, the sealing performance of the energy storage container in actual use is not very good. The pressure inside the energy storage container is difficult to reach the opening pressure to open the pressure relief valve cover, which in turn leads to the pressure in the energy storage container not being released.

[0004] There is currently no effective solution to the technical problem that the relatively low pressure inside the energy storage container makes it difficult to open the pressure relief valve cover. Utility Model Content

[0005] The main purpose of this utility model is to provide a pressure relief valve and an energy storage container having the same, so as to solve the technical problem that the pressure relief valve cover is difficult to open due to the small pressure inside the energy storage container.

[0006] To achieve the above objectives, according to one aspect of the present invention, a pressure relief valve is provided, comprising: a pressure relief valve body having a pressure relief chamber and a pressure relief port, the pressure relief port being connected to the pressure relief chamber, the pressure relief chamber being used to communicate with a pressure-relieved chamber; a pressure relief valve cover being movably connected to the pressure relief valve body, the pressure relief valve cover having a blocking position for blocking the pressure relief port and a clearance position for avoiding the pressure relief port; and an elastic element, one end of the elastic element being connected to the pressure relief valve cover, the other end of the elastic element being used to connect to a mounting base, the elastic element being used to apply a preload force to the pressure relief valve cover to make the pressure relief valve cover be in the blocking position, and when the pressure in the pressure relief chamber is greater than a preset value, the pressure relief valve cover moves relative to the pressure relief valve body to the clearance position.

[0007] Furthermore, a sealing ring is provided on one of the pressure relief valve cover and the pressure relief valve body. When the pressure relief valve cover is in the blocking position, the pressure relief valve cover abuts against the pressure relief valve body through the sealing ring.

[0008] Furthermore, the pressure relief chamber has multiple chambers that are interconnected.

[0009] Furthermore, multiple chambers are distributed sequentially along the axial direction of the pressure relief chamber.

[0010] Furthermore, at least one baffle plate is provided inside the pressure relief chamber, which divides the pressure relief chamber into multiple chambers, and multiple through holes are provided on the baffle plate.

[0011] Furthermore, the baffle plate includes: a first baffle plate, which is disposed near the pressure relief port and has multiple first through holes, forming a first chamber with the pressure relief valve cover; and a second baffle plate, which is disposed away from the pressure relief port and has multiple second through holes, forming a second chamber between the second baffle plate and the first baffle plate, and forming a third chamber between the second baffle plate and the pressure relief box.

[0012] Furthermore, in the circumferential direction of the first barrier plate, at least a portion of the first through hole and the second through hole are misaligned.

[0013] Furthermore, the pressure relief valve cover is provided with heat insulation material, and when the pressure relief valve cover is in the sealed position, the heat insulation material is positioned opposite to the pressure relief port.

[0014] Furthermore, the elastic element is located outside the pressure relief chamber.

[0015] According to another aspect of the present invention, an energy storage container is provided, the energy storage container including a pressure relief valve, the pressure relief valve being the pressure relief valve described above.

[0016] Using the technical solution of this utility model, the pressure relief valve cover and the pressure relief valve body are movably connected during use. An elastic element is connected between the pressure relief valve cover and the mounting base. The pressure relief valve body is connected to the pressure relief chamber. The elastic element provides a preload to seal the pressure relief valve cover at the pressure relief port. When the pressure in the pressure relief chamber exceeds a preset value, the pressure relief valve cover moves relative to the pressure relief valve body to avoid the pressure relief port, thereby releasing the pressure. When the pressure relief valve is vertically installed, the pressure in the pressure relief chamber exceeds the sum of the spring preload and the weight of the pressure relief valve cover, allowing the pressure relief valve cover to be opened. When the pressure relief valve is horizontally installed, the pressure in the pressure relief chamber exceeds the spring preload, allowing the pressure relief valve cover to be opened. Compared to the screw-on structure of the pressure relief valve cover in the prior art, the pressure relief valve cover in this solution can be opened by a smaller pressure to release the pressure in the pressure relief chamber. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0018] Figure 1 A cross-sectional schematic diagram of the pressure relief valve in this utility model is shown;

[0019] Figure 2 A perspective view of the pressure relief valve in this utility model is shown.

[0020] The above figures include the following reference numerals:

[0021] 1. Pressure relief valve body;

[0022] 2. Pressure relief valve cover;

[0023] 21. Thermal insulation materials;

[0024] 3. Elastic components;

[0025] 4. First barrier plate;

[0026] 41. First through hole;

[0027] 5. Second barrier plate;

[0028] 51. Second through hole;

[0029] 6. Sealing ring. Detailed Implementation

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0032] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0033] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. In the drawings, for clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to denote the same devices, and therefore their description will be omitted.

[0034] Combination Figures 1 to 2 As shown, according to a specific embodiment of this application, a pressure relief valve is provided.

[0035] Specifically, the pressure relief valve includes: a pressure relief valve body 1, a pressure relief valve cover 2, and a resilient element 3. The pressure relief valve body 1 has a pressure relief chamber and a pressure relief port, with the pressure relief port communicating with the pressure relief chamber, which is used to communicate with the pressure-relieved housing. The pressure relief valve cover 2 is movably connected to the pressure relief valve body 1, and has a sealing position for blocking the pressure relief port and a clearance position for avoiding the pressure relief port. One end of the resilient element 3 is connected to the pressure relief valve cover 2, and the other end is used to connect to the mounting base. The resilient element 3 applies a preload force to the pressure relief valve cover 2 to keep it in the sealing position. When the pressure in the pressure relief chamber exceeds a preset value, the pressure relief valve cover 2 moves relative to the pressure relief valve body 1 to the clearance position.

[0036] In the embodiments of this application, when the pressure relief valve is in use, the pressure relief valve cover 2 is movably connected to the pressure relief valve body 1, and the elastic element 3 is connected between the pressure relief valve cover 2 and the mounting base. The pressure relief valve body 1 is connected to the pressure relief chamber to be relieved. The elastic element 3 provides a pre-tightening force to seal the pressure relief valve cover 2 at the pressure relief port. When the pressure in the pressure relief chamber is greater than a preset value, the pressure relief valve cover 2 moves relative to the pressure relief valve body 1 to avoid the pressure relief port, thereby releasing the pressure. When the pressure relief valve is vertically set, the pressure in the pressure relief chamber is greater than the sum of the spring pre-tightening force and the weight of the pressure relief valve cover 2, so the pressure relief valve cover 2 can be opened; when the pressure relief valve is horizontally set, the pressure in the pressure relief chamber is greater than the spring pre-tightening force, so the pressure relief valve cover 2 can be opened. Compared with the screw-on structure of the pressure relief valve cover 2 in the prior art, the pressure relief valve cover 2 in this solution can be opened by a smaller pressure to release the pressure in the pressure relief chamber to be relieved.

[0037] It should be noted that the installation foundation refers to the pressure relief tank or other corresponding structure that is fixed to the pressure relief tank.

[0038] In one exemplary embodiment of this application, a sealing ring 6 is provided on one of the pressure relief valve cover 2 and the pressure relief valve body 1. When the pressure relief valve cover 2 is in the sealed position, the pressure relief valve cover 2 abuts against the pressure relief valve body 1 through the sealing ring 6. The pressure relief valve cover 2 abuts against the pressure relief valve body 1 through the sealing ring 6 to improve the sealing performance of the pressure relief chamber, thereby increasing the pressure in the pressure relief chamber to a certain extent, making the pressure relief valve cover 2 easier to be forced open.

[0039] like Figure 1 As shown, the pressure relief valve cover 2 has a receiving cavity with one open end. When the pressure relief valve cover 2 is in the sealed position, it is sleeved on the outside of the pressure relief valve body 1 and seals the pressure relief port. A sealing ring 6 is connected to the inner wall of the pressure relief valve cover 2, or a sealing ring 6 is sleeved on the outer wall of the pressure relief valve body 1, so that the pressure relief valve cover 2 abuts against the pressure relief valve body 1 through the sealing ring 6.

[0040] In one exemplary embodiment of this application, the pressure relief chamber has multiple chambers that are interconnected. When the pressure relief valve is in use, the gas or flame in the pressure relief chamber is attenuated through the multiple chambers to improve the safety performance of the pressure relief valve during the pressure relief process.

[0041] Preferably, multiple chambers are distributed sequentially along the axial direction of the pressure relief chamber. When the pressure relief valve is in use, the gas or flame in the pressure relief chamber passes through multiple chambers sequentially along the axial direction of the pressure relief chamber, so as to gradually attenuate the gas or flame in the pressure relief chamber and further improve the safety performance of the pressure relief valve during the pressure relief process.

[0042] Furthermore, the pressure relief chamber is equipped with at least one baffle plate, which divides the pressure relief chamber into multiple chambers. The baffle plate has multiple through holes. The multiple chambers are connected through the through holes in the baffle plate to ensure that the gas or flame in the pressure relief chamber acts evenly on the baffle plate.

[0043] like Figure 1 As shown, the baffle plate includes a first baffle plate 4 and a second baffle plate 5. The first baffle plate 4 is located near the pressure relief port and has multiple first through holes 41. The first baffle plate 4 and the pressure relief valve cover 2 form a first chamber. The second baffle plate 5 is located away from the pressure relief port and has multiple second through holes 51. The second baffle plate 5 and the first baffle plate 4 form a second chamber, and the second baffle plate 5 and the pressure relief box body form a third chamber.

[0044] Each baffle plate is welded to the inner wall of the pressure relief valve body 1. The thickness and material of the baffle plate can be determined according to the medium and pressure parameters in the pressure relief box. In the embodiments of this application, the thickness and material of the baffle plate are not limited.

[0045] As an alternative implementation method, three or more barrier plates can be installed depending on the operating conditions.

[0046] Preferably, at least a portion of the first through hole 41 and the second through hole 51 are misaligned in the circumferential direction of the first barrier plate 4. This arrangement allows gas or flame passing through the second through hole 51 to collide with and be attenuated by the first barrier plate 4 before being discharged through the first through hole 41, thereby improving the attenuation performance of the pressure relief valve on gas or flame.

[0047] In one exemplary embodiment of this application, the pressure relief valve cover 2 is provided with a heat insulation material 21. When the pressure relief valve cover 2 is in the sealed position, the heat insulation material 21 is positioned opposite to the pressure relief port. The heat insulation material 21 can provide fire extinguishing and heat insulation effects, thereby improving the safety performance of the pressure relief valve during the pressure relief process.

[0048] In the embodiments of this application, the thermal insulation material 21 is Grade A rock wool, which is encapsulated in the cavity of the pressure relief valve cover 2 by sheet metal material.

[0049] In one exemplary embodiment of this application, the elastic element 3 is located outside the pressure relief chamber. Positioning the elastic element 3 outside the pressure relief chamber prevents it from being affected by the pressure and heat within the chamber, thus ensuring the preload of the elastic element 3.

[0050] like Figure 1 As shown, the elastic element 3 is a spring. One end of the spring is connected to the outer wall of the pressure relief valve cover 2, and the other end of the spring is used for the mounting base for fixed connection.

[0051] According to another specific embodiment of this application, an energy storage container is provided, which includes a pressure relief valve, and the pressure relief valve is the same as the pressure relief valve described in the above embodiment.

[0052] In the embodiments of this application, the top of the energy storage container is provided with an opening, and the pressure relief valve is connected to the top of the energy storage container through the pressure relief valve body 1, so that the pressure relief chamber is connected to the cavity of the energy storage container. The pressure relief valve cover 2 is connected to the side wall or top wall of the energy storage container through the elastic element 3.

[0053] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0054] 1. In use, the pressure relief valve cover 2 is movably connected to the pressure relief valve body 1. An elastic element 3 connects the pressure relief valve cover 2 and the mounting base. The pressure relief valve body 1 is connected to the pressure relief chamber. The elastic element 3 provides a pre-tightening force to seal the pressure relief valve cover 2 at the pressure relief port. When the pressure in the pressure relief chamber exceeds a preset value, the pressure relief valve cover 2 moves relative to the pressure relief valve body 1 to avoid the pressure relief port, thereby releasing the pressure. When the pressure relief valve is vertically installed, the pressure in the pressure relief chamber exceeds the sum of the spring pre-tightening force and the weight of the pressure relief valve cover 2, allowing the pressure relief valve cover 2 to open. When the pressure relief valve is horizontally installed, the pressure in the pressure relief chamber exceeds the spring pre-tightening force, allowing the pressure relief valve cover 2 to open. Compared to the screw-on structure of the pressure relief valve cover 2 in the prior art, the pressure relief valve cover 2 in this solution can be opened by a smaller pressure to release the pressure in the pressure relief chamber.

[0055] 2. The baffle plate is used to attenuate the gas or flame in the pressure relief chamber, thereby improving the safety performance of the pressure relief valve during the pressure relief process.

[0056] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0057] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this utility model.

[0058] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0059] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A pressure relief valve, characterized in that, include: The pressure relief valve body (1) has a pressure relief chamber and a pressure relief port. The pressure relief port is connected to the pressure relief chamber, and the pressure relief chamber is used to connect to the pressure relief box. Pressure relief valve cover (2), the pressure relief valve cover (2) is movably connected to the pressure relief valve body (1), the pressure relief valve cover (2) has a blocking position for blocking the pressure relief port, and a clearance position for avoiding the pressure relief port; An elastic element (3) is provided, one end of which is connected to the pressure relief valve cover (2), and the other end of which is connected to the mounting base. The elastic element (3) is used to apply a pre-tightening force to the pressure relief valve cover (2) so that the pressure relief valve cover (2) is located in the blocking position. When the pressure in the pressure relief chamber is greater than a preset value, the pressure relief valve cover (2) moves relative to the pressure relief valve body (1) to the avoidance position.

2. The pressure relief valve according to claim 1, characterized in that, One of the pressure relief valve cover (2) and the pressure relief valve body (1) is provided with a sealing ring (6). When the pressure relief valve cover (2) is in the blocking position, the pressure relief valve cover (2) abuts against the pressure relief valve body (1) through the sealing ring (6).

3. The pressure relief valve according to claim 1, characterized in that, The pressure relief chamber has multiple chambers, which are interconnected.

4. The pressure relief valve according to claim 3, characterized in that, The multiple chambers are distributed sequentially along the axial direction of the pressure relief chamber.

5. The pressure relief valve according to claim 4, characterized in that, The pressure relief chamber is provided with at least one baffle plate, which divides the pressure relief chamber into multiple chambers, and the baffle plate has multiple through holes.

6. The pressure relief valve according to claim 5, characterized in that, The barrier plate includes: The first barrier plate (4) is located near the pressure relief port. The first barrier plate (4) has multiple first through holes (41). The first barrier plate (4) and the pressure relief valve cover (2) form a first chamber. The second barrier plate (5) is located away from the pressure relief port. The second barrier plate (5) has multiple second through holes (51). The second barrier plate (5) and the first barrier plate (4) form a second chamber. The second barrier plate (5) and the pressure relief box form a third chamber.

7. The pressure relief valve according to claim 6, characterized in that, In the circumferential direction of the first barrier plate (4), at least a portion of the first through hole (41) is misaligned with the second through hole (51).

8. The pressure relief valve according to claim 1, characterized in that, The pressure relief valve cover (2) is provided with heat insulation material (21). When the pressure relief valve cover (2) is in the sealing position, the heat insulation material (21) is arranged opposite to the pressure relief port.

9. The pressure relief valve according to claim 6, characterized in that, The elastic element (3) is located outside the pressure relief chamber.

10. An energy storage container, the energy storage container including a pressure relief valve, characterized in that, The pressure relief valve is the pressure relief valve described in any one of claims 1-9.

Images