Double-pressure-relief-piece and double-membrane-material type anti-explosion valve, kinetic energy assembly and kinetic energy device

Abstract

The utility model relates to the technical field of anti-explosion valves, and discloses a double-pressure-relief-piece double-membrane-material type anti-explosion valve, a kinetic energy assembly and a kinetic energy device.The double-pressure-relief-piece double-membrane-material type anti-explosion valve comprises a valve body, at least two pieces of membrane paper and pressure relief pieces; the valve body comprises a positioning part and a pressure relief part, the pressure relief part is connected with the positioning part, an air channel is formed between the positioning part and the pressure relief part, a through hole communicated with the air channel is formed in the pressure relief part, the two pieces of membrane paper seal the two ends of the through hole, the pressure relief piece is arranged in the through hole, and at least two ejector pin parts are arranged on the pressure relief piece. The puncturing end of each ejector pin part faces one piece of film paper, the two ejector pin parts are arranged at intervals with the film paper in the initial state, and the corresponding film paper is punctured during pressure relief. The pressure relief area is increased due to the arrangement of the double-film paper, the pressure in the sealed box body can be quickly relieved, and the pressure relief effect is effectively enhanced. In addition, it can be guaranteed that the large ventilation volume can be achieved on a narrow installation surface.

Description

Technical Field

[0001] The utility model belongs to the technical field of explosion-proof valves, and in particular relates to a double-pressure relief component double-membrane material type explosion-proof valve, a kinetic energy component and a kinetic energy device. Background Art

[0002] When a sealed box contains a power source, due to its sealed structure, there is a risk of explosion when thermal runaway occurs. Therefore, it is usually necessary to connect an explosion-proof valve to the sealed box. Under normal circumstances, the explosion-proof valve exchanges air with the outside through a waterproof and breathable membrane. When the internal pressure is too high, safety is ensured by pressure relief.

[0003] Commonly used explosion-proof valves include ejector-type explosion-proof valves, which use high air pressure to expand a single waterproof breathable membrane to contact with a static ejector, so that the ejector pierces the waterproof breathable membrane to achieve pressure relief. However, the pressure relief area of ​​this structure is small, resulting in poor pressure relief effect. Therefore, it is usually necessary to open a larger installation port on the sealed box to achieve a larger air permeability, which is difficult to achieve when the installation surface of the sealed box is relatively cramped and a larger air permeability is required at the same time. Utility Model Content

[0004] In order to solve the deficiencies of the prior art, the utility model provides a double-pressure relief component double-membrane explosion-proof valve, a kinetic energy component and a kinetic energy device.

[0005] The technical effects to be achieved by the utility model are achieved through the following technical aspects:

[0006] In a first aspect, the utility model provides a double pressure relief component double membrane material explosion-proof valve, comprising: a valve body, at least two membrane papers and a pressure relief component;

[0007] The valve body includes a positioning portion and a pressure relief portion, the pressure relief portion is connected to the positioning portion, an airway is opened between the positioning portion and the pressure relief portion, a through hole connected to the airway is opened on the pressure relief portion, two membrane papers close the two ends of the through hole, the pressure relief component is arranged in the through hole, and the pressure relief component has at least two ejector parts, the piercing end of each ejector part is arranged toward one of the membrane papers, and the two ejector parts are spaced apart from the membrane papers in an initial state, and pierce the corresponding membrane papers when the pressure is released.

[0008] In some embodiments, the distance between the piercing end of each ejector pin portion and the corresponding membrane paper is equal.

[0009] In some embodiments, the pressure relief member is disposed in the middle of the through hole.

[0010] In some embodiments, the piercing end of each ejector needle is arranged opposite to the center of the corresponding film paper, so that the ejector needle pierces the center of the corresponding film paper.

[0011] In some embodiments, the pressure relief member further includes a connecting portion, the two ejector pins are connected to the connecting portion, and an angle formed by the two ejector pins is equal to or less than 180°.

[0012] In some embodiments, the airways are provided in at least two forms.

[0013] In some embodiments, a pressure cover is further included, and the pressure cover is connected to the positioning portion.

[0014] In some embodiments, a supporting member is disposed between the positioning portion and the pressure cover.

[0015] In a second aspect, the utility model provides a kinetic energy component, including the double pressure relief component and double membrane explosion-proof valve described in any of the above embodiments.

[0016] In a third aspect, the utility model provides a kinetic energy device, comprising the kinetic energy component for providing power in the above-mentioned embodiment.

[0017] In summary, the utility model has at least the following advantages: by installing the double pressure relief component double membrane explosion-proof valve in the external sealed box, the cavity in the external sealed box can be isolated from the airway by the membrane paper, and the airway is connected to the external gas. When the gas pressure inside the external sealed box is greater than or equal to the pressure value set by the double pressure relief component double membrane explosion-proof valve, the explosion-proof valve performs blasting pressure relief. At this time, under the action of the internal pressure of the external sealed box, the membrane papers at both ends expand due to the increase in the internal pressure of the external sealed box, so that the middle parts of the membrane papers at both ends are close to each other. At this time, the pressure relief component arranged in the airway can take effect, that is, the piercing ends of the two ejector parts quickly pierce the corresponding membrane paper, so that the air pressure inside the sealed box can be quickly released, thereby achieving pressure balance inside and outside the sealed box. Among them, the setting of the double membrane paper increases the pressure relief area, can quickly relieve the pressure inside the sealed box, and effectively enhances the pressure relief effect. And it can ensure that a large air permeability is achieved on a relatively cramped installation surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of a double pressure relief component double membrane type explosion-proof valve in an embodiment;

[0019] Figure 2 It is a schematic cross-sectional structural diagram of a double pressure relief member double membrane material explosion-proof valve in an embodiment;

[0020] Figure 3It is a schematic diagram of the overall exploded structure of the double pressure relief component double membrane explosion-proof valve in the embodiment.

[0021] Markings in the figure:

[0022] 10. Double pressure relief part and double membrane explosion-proof valve; 100. Valve body; 110. Positioning part; 120. Pressure relief part; 121. Perforation; 130. Airway; 140. Gland; 150. Sealing ring; 160. Mounting groove; 200. Membrane paper; 300. Pressure relief part; 310. Ejector part; 320. Connecting part; 400. Supporting part. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. The described implementation is a part of the implementation of the utility model, not all of the implementations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0025] In the following embodiments, Figure 1 , Figure 2 and Figure 3 The coordinate system is taken as the reference, the direction indicated by the X-axis arrow is right, the direction indicated by the Y-axis arrow is forward, and the direction indicated by the Z-axis arrow is upward.

[0026] Embodiment 1:

[0027] like Figures 1 to 3 As shown, in this embodiment, a double pressure relief component double membrane material explosion-proof valve 10 includes: a valve body 100, at least two membrane papers 200 and a pressure relief component 300; the valve body 100 includes a positioning portion 110 and a pressure relief portion 120, the pressure relief portion 120 is connected to the positioning portion 110, an airway 130 is opened between the positioning portion 110 and the pressure relief portion 120, and a through hole 121 connected to the airway 130 is opened on the pressure relief portion 120, two membrane papers 200 close both ends of the through hole 121, the pressure relief component 300 is arranged in the through hole 121, and the pressure relief component 300 has at least two ejector parts 310, the piercing end of each ejector part 310 is arranged toward a membrane paper 200, and the two ejector parts 310 are spaced apart from the membrane paper 200 in the initial state, and pierce the corresponding membrane paper 200 when the pressure is released.

[0028] Specifically, the number of the membrane paper 200 and the pressure relief part 300 can be set to 2. In another embodiment, the number of the membrane paper 200 and the pressure relief part 300 can also be set to 4. The valve body 100 is set to be a valve body 100 that is wide at the top and narrow at the bottom. The upper end of the pressure relief part 120 is connected to the lower end of the positioning part 110. The cross-sectional area of ​​the positioning part 110 is large, and the cross-sectional area of ​​the pressure relief part 120 is small, and they are arranged in a T shape. In another embodiment, the positioning part 110 can also form an oblique angle with the pressure relief part 120, or the upper and lower widths are the same, etc. The specific arrangement can be determined according to actual conditions, and this application does not limit this. The upper end face of the positioning part 110 is provided with an airway 130 in the direction toward the pressure relief part 120, that is, the airway 130 is opened along the Z-axis direction, and the pressure relief part 120 is provided with a through hole 121 along the X-axis direction, and the through hole 121 is connected to the airway 130. The shape of the membrane paper 200 is circular. In another embodiment, the shape of the membrane paper 200 can be square. Its specific setting can be determined according to the actual situation, and this application does not limit this. The membrane paper 200 is set as a waterproof and breathable membrane. The membrane paper 200 has a certain ductility to expand and contract. The outer surfaces on the left and right sides of the pressure relief part 120 are respectively provided with mounting grooves 160 facing inward. The two membrane papers 200 are connected to the corresponding mounting grooves 160. The shape of the mounting grooves 160 is adapted to the shape of the membrane paper 200 to respectively close the left and right ends of the perforation 121. The specific setting of the mounting groove 160 can be determined according to the actual situation, and this application does not limit this. When the material of the valve body 100 is plastic, the membrane paper 200 is connected to the valve body 100 by welding. In another embodiment, when the material of the valve body 100 is metal, the membrane paper 200 can be bonded to the valve body 100. Its specific setting can be determined according to the actual situation, and this application does not limit this. The pressure relief member 300 is integrally injection molded with the valve body 100. In another embodiment, the pressure relief member 300 is welded to the valve body 100. The pressure relief member 300 includes a connecting portion 320 and at least two ejector portions 310. The number of the ejector portions 310 matches the number of the membrane papers 200. The connecting portion 320 is connected to the side wall of the perforation 121. The two ejector portions 310 are connected to the connecting portion 320. The piercing end of each ejector portion 310 is arranged toward a membrane paper 200. In the initial state, there is a safe distance between the piercing end and the corresponding membrane paper 200 to avoid affecting the performance of the membrane material when a slight air pressure difference or high-frequency movement is generated during transportation.

[0029] It is worth noting that by installing the double pressure relief component double membrane explosion-proof valve 10 in the sealed box, the inner cavity of the sealed box can be isolated from the airway 130 by the membrane paper 200, and the airway 130 is connected to the external gas. When the gas pressure inside the external sealed box is greater than or equal to the pressure value set by the double pressure relief component double membrane explosion-proof valve 10, the explosion-proof valve performs blasting pressure relief. At this time, under the action of the internal pressure of the sealed box, the membrane papers 200 at both ends expand due to the increase in the internal pressure of the sealed box, so that the middle parts of the membrane papers 200 at both ends are close to each other. At this time, the pressure relief component 300 provided in the airway 130 can take effect, that is, the piercing ends of the two ejector parts 310 quickly pierce the corresponding membrane paper 200, so that the air pressure inside the sealed box can be quickly released, thereby achieving pressure balance inside and outside the sealed box. Among them, the setting of the double membrane paper 200 increases the pressure relief area, can quickly relieve pressure inside the sealed box, and effectively enhances the pressure relief effect. It can also ensure a large air permeability on a relatively cramped installation surface. At the same time, it ensures that the product will not fail to seal or release due to internal and external pressure differences exceeding its tolerance capacity when the external environment changes under normal working conditions.

[0030] Embodiment 2:

[0031] This embodiment is a further implementation of the embodiment 1. In this embodiment, the distance between the piercing end of each ejector pin 310 and the corresponding film paper 200 is equal.

[0032] Specifically, by setting the puncturing ends of the two ejector pins 310 and the corresponding film paper 200 to be equidistant, it is convenient to ensure that the two can release pressure synchronously, thereby effectively increasing the pressure relief area and ensuring the pressure relief effect.

[0033] In order to ensure synchronous pressure relief, Figure 2 and Figure 3 As shown, in some embodiments, the pressure relief member 300 is disposed in the middle of the through hole 121 .

[0034] Specifically, by setting the pressure relief piece 300 in the middle of the perforation 121 and the length of the ejector pin portion 310 on the pressure relief piece 300 is the same, the two membrane papers 200 and the pressure relief piece 300 can be symmetrically arranged along the Y-axis center line of the perforation 121, thereby facilitating synchronous pressure relief.

[0035] Embodiment 3:

[0036] This embodiment is similar to Embodiment 2, except that, in this embodiment, the two ejector pin portions 310 are respectively arranged as the first portion and the second portion, the lengths of the first portion and the second portion are different, and the pressure relief member 300 is correspondingly arranged in the perforation 121, so that the distance between the first portion and the corresponding membrane paper 200 is equal to the distance between the second portion and the corresponding membrane paper 200.

[0037] Embodiment 4:

[0038] This embodiment is a further implementation of embodiment 1. In this embodiment, the distances between the piercing ends of the two ejector needles 310 and the corresponding film papers 200 are different. When the piercing end of one ejector needle 310 pierces the corresponding film paper 200, the piercing end of the other ejector needle 310 puts the corresponding film paper 200 in a state of being about to be pierced, and can completely pierce the film paper 200 under the action of the remaining air pressure, thereby completing the piercing of the film papers 200 at both ends.

[0039] Example 5

[0040] This embodiment is a further implementation of embodiment 1, 2, 3 or 4. Figure 2 As shown, in this embodiment, the piercing end of each ejector needle portion 310 is arranged opposite to the center of the corresponding film paper 200, so that the ejector needle portion 310 pierces the center of the corresponding film paper 200.

[0041] Specifically, by pointing the piercing end of the ejector pin 310 toward the center point of the corresponding film paper 200, that is, the piercing end of the left ejector pin 310 toward the center point of the left film paper 200, and the piercing end of the right ejector pin 310 toward the center point of the right film paper 200, under pressure, the film papers 200 on both sides are ruptured in the center, the pressure relief area is maximized, and the pressure relief effect is better.

[0042] Example 6

[0043] This embodiment is a further implementation of embodiment 1, 2, 3, 4 or 5, such as Figure 2 As shown, in this embodiment, the pressure relief member 300 further includes a connecting portion 320 , and two ejector pins 310 are connected to the connecting portion 320 , and an angle formed by the two ejector pins 310 is equal to or less than 180°.

[0044] Specifically, the two ejector pins 310 are arranged according to actual production conditions.

[0045] In one embodiment, the angle formed by the two ejector pins 310 is equal to 180°. Figure 2 The two ejector pins 310 are installed in a straight line on the connecting part 320, and the two membrane papers 200 are parallel to each other and arranged side by side. In this way, the pressure relief member 300 and the two membrane papers 200 are arranged in a straight line, and the pressure relief member 300 is T-shaped, and the pressure relief effect is best.

[0046] In another embodiment, the angle formed by the two ejector pins 310 is less than 180°, and the two membrane papers 200 are arranged accordingly. For example, the angle formed by the two ejector pins 310 is an acute angle, and the two membrane papers 200 are arranged accordingly, so that one membrane paper 200, the pressure relief member 300 and the other membrane paper 200 are arranged in a V shape; for another example, the angle formed by the two ejector pins 310 is a right angle, and the two membrane papers 200 are arranged at a right angle; for another example, the angle formed by the two ejector pins 310 is an obtuse angle.

[0047] Example 7

[0048] This embodiment is similar to Embodiment 6 but different in that, in this embodiment, two ejector pins 310 are correspondingly staggered and installed on the connecting portion 320 , and two film papers 200 are correspondingly arranged.

[0049] Example 8

[0050] This embodiment is a further implementation of embodiment 1, 2, 3, 4, 5, 6 or 7, such as Figure 3 As shown, in this embodiment, at least two air passages 130 are provided.

[0051] Specifically, by setting two air ducts 130, exhaust can be performed through different air ducts 130. Compared with an entire air duct 130 of equal area, such a setting can ensure ventilation while reducing the dust entering the air duct 130 to a certain extent.

[0052] Among them, the setting of the airway 130 is set according to the actual production situation:

[0053] In one embodiment, each airway 130 is arranged in parallel. Figure 3 The parallel direction of the two air passages 130 is perpendicular to the opening direction of the through hole 121. That is, the through hole 121 is opened along the X-axis direction, and the air passages 130 are arranged side by side along the Y-axis direction, so that dust is prevented from entering while ensuring gas exchange. It is understandable that the air passages 130 can also be arranged in other ways when they are arranged side by side, which will not be described here in detail.

[0054] In another embodiment, the air passages 130 are staggered.

[0055] In another embodiment, three air passages 130 are provided.

[0056] In yet another embodiment, four air passages 130 are provided.

[0057] In order to prevent the entry of dust, particles, etc. and affect the performance of the film paper 200, such as Figure 1 , Figure 2 and Figure 3As shown, in some embodiments, the double pressure relief component double membrane type explosion-proof valve 10 further includes a pressure cover 140 , and the pressure cover 140 is connected to the positioning portion 110 .

[0058] Specifically, there is a gap between the gland 140 and the pressure relief portion 120 for discharging the gas in the airway 130. In another embodiment, the gland 140 is tightly connected to the pressure relief portion 120, and a pore is provided on the top surface of the gland 140 for discharging the gas in the airway 130. The positioning portion 110 is snap-fitted with the gland 140. It is understandable that the gland 140 and the valve body 100 can be loosely connected in other ways, such as easy-to-tear adhesive bonding. In addition, the gland 140 can prevent external dust from entering the airway 130. When the two membrane papers 200 rupture and release pressure, the gas in the airway 130 can flush the gland 140 out.

[0059] In order to facilitate the exchange of airflow between the gland 140 and the valve body 100, as shown in FIG. Figure 2 and Figure 3 As shown, in some embodiments, a resisting member 400 is disposed between the positioning portion 110 and the pressing cover 140 .

[0060] Specifically, a resisting member 400 is provided on the upper end surface of the positioning portion 110, and the resisting member 400 may be, but is not limited to, a cylindrical protrusion, so that the positioning portion 110 and the gland 140 can maintain a distance, so that the gas in the airway 130 can fully flow out from the distance and flow to the outside through the gap between the gland 140 and the valve body 100, so as to facilitate air exchange through the membrane paper 200 under normal conditions. Among them, the resisting member 400 may be, but is not limited to, two, and is provided on the left and right sides of the airway 130.

[0061] In order to increase the practicality of the valve body 100, as Figure 2 and Figure 3 As shown, in some embodiments, a sealing ring 150 is installed on the outer surface of the positioning portion 110 for sealing connection with an external sealing box.

[0062] Specifically, the sealing ring 150 and the lower end surface of the positioning portion 110 can be optionally but not limited to a chimeric connection, and the sealing ring 150 ensures the airtightness of the external sealing box, thereby effectively increasing the practicality of the double pressure relief component double membrane material explosion-proof valve 10.

[0063] Example 9

[0064] This embodiment provides a kinetic energy assembly, including the double pressure relief component double membrane material explosion-proof valve 10 in any of the above embodiments.

[0065] Specifically, the kinetic energy component includes a sealed box and a power source, and the double-pressure relief component double-membrane material explosion-proof valve 10 is screwed to the inner screw hole of the sealed box through an external thread.

[0066] The power source may be a lithium battery, a sodium ion battery, a fuel cell, etc., and the type of the power source is not limited. The sealed box may be a metal, a non-metal, or a variety of other structural forms, as long as it can be used to protect and support the power source. The specific submodules included in the power source are not limited in this application.

[0067] Example 10

[0068] A kinetic energy device is provided, comprising the kinetic energy component for providing power of Example 9.

[0069] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0070] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0071] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0072] In the present utility model, unless otherwise clearly specified and limited, the first feature being above or below the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being below, below, and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0073] Although the utility model is described in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes based on the above content. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the appended claims.

Claims

1. A double pressure relief component double membrane type explosion-proof valve, characterized in that: include: A valve body (100), at least two membrane papers (200) and a pressure relief member (300); The valve body (100) comprises a positioning portion (110) and a pressure relief portion (120), wherein the pressure relief portion (120) is connected to the positioning portion (110), an air passage (130) is provided between the positioning portion (110) and the pressure relief portion (120), a through hole (121) connected to the air passage (130) is provided on the pressure relief portion (120), two membrane papers (200) close two ends of the through hole (121), the pressure relief component (300) is arranged in the through hole (121), and the pressure relief component (300) has at least two ejector parts (310), the piercing end of each ejector part (310) is arranged toward one of the membrane papers (200), and the two ejector parts (310) are spaced apart from the membrane papers (200) in an initial state, and pierce the corresponding membrane papers (200) when the pressure is released.

2. The double pressure relief component double membrane explosion-proof valve according to claim 1, characterized in that: The distance between the piercing end of each ejector needle portion (310) and the corresponding film paper (200) is equal.

3. The double pressure relief component double membrane explosion-proof valve according to claim 2, characterized in that: The pressure relief member (300) is arranged in the middle of the through hole (121).

4. The double pressure relief component double membrane explosion-proof valve according to claim 1, characterized in that: The piercing end of each ejector needle portion (310) is arranged opposite to the center of the corresponding membrane paper (200), so that the ejector needle portion (310) pierces the center of the corresponding membrane paper (200).

5. The double pressure relief component double membrane explosion-proof valve according to claim 1, characterized in that: The pressure relief member (300) further comprises a connecting portion (320), the two ejector pin portions (310) being connected to the connecting portion (320), and an angle formed by the two ejector pin portions (310) being equal to or less than 180°.

6. The double pressure relief component double membrane explosion-proof valve according to claim 1, characterized in that: The number of the air passages (130) is at least two.

7. The double pressure relief component double membrane explosion-proof valve according to claim 1, characterized in that: It also includes a pressure cover (140), wherein the pressure cover (140) is connected to the positioning portion (110).

8. The double pressure relief component double membrane explosion-proof valve according to claim 7, characterized in that: A supporting member (400) is provided between the positioning portion (110) and the pressure cover (140).

9. A kinetic energy component, characterized in that: A double pressure relief component double membrane explosion-proof valve comprising any one of claims 1 to 8.

10. A kinetic energy device, characterized in that: Comprising the kinetic energy component for providing power as claimed in claim 9.

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