CN115020906A - Explosion-proof valve and sealing equipment - Google Patents

Explosion-proof valve and sealing equipment Download PDF

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Publication number
CN115020906A
CN115020906A CN202210742907.XA CN202210742907A CN115020906A CN 115020906 A CN115020906 A CN 115020906A CN 202210742907 A CN202210742907 A CN 202210742907A CN 115020906 A CN115020906 A CN 115020906A
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CN
China
Prior art keywords
pressure relief
hole
valve
explosion
assembly
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Pending
Application number
CN202210742907.XA
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Chinese (zh)
Inventor
汪水
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Huizhou Voir Science & Technology Co ltd
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Huizhou Voir Science & Technology Co ltd
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Priority to CN202210742907.XA priority Critical patent/CN115020906A/en
Publication of CN115020906A publication Critical patent/CN115020906A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/317—Re-sealable arrangements
    • H01M50/325—Re-sealable arrangements comprising deformable valve members, e.g. elastic or flexible valve members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/26—Drying gases or vapours
    • B01D53/261—Drying gases or vapours by adsorption
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/18—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on either side
    • F16K17/19—Equalising valves predominantly for tanks
    • F16K17/196—Equalising valves predominantly for tanks spring-loaded
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/35—Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/394—Gas-pervious parts or elements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Mechanical Engineering (AREA)
  • Safety Valves (AREA)

Abstract

The embodiment of the application relates to the technical field of explosion-proof valves and discloses an explosion-proof valve and sealing equipment, the explosion-proof valve includes valve body, pressure release mechanism and accuse wet subassembly, and the activity of pressure release mechanism sets up in the valve body, and the accuse wet subassembly sets up in pressure release mechanism, and the accuse wet subassembly is arranged in absorbing the steam in the air current of the wet subassembly of accuse of flow-through to dry air current. Through set up the wet subassembly of accuse in pressure release mechanism, can the effective absorption steam in the air current of the wet subassembly of accuse of flow through with dry air current, promote the air current drying ability of explosion-proof valve, effectively reduced the inside probability that appears "condensation" phenomenon of sealing equipment.

Description

Explosion-proof valve and sealing equipment
Technical Field
The embodiment of the application relates to the technical field of explosion-proof valves, in particular to an explosion-proof valve and sealing equipment.
Background
When the ambient temperature in the sealed box rises, the temperature of the inner surface of the product shell is lower than the ambient temperature due to thermal inertia, and when the water vapor entering the sealed box meets the surface of the product with the dew point lower than the dew point, the water vapor is condensed to form dew drops, which is called condensation. The condensation can lead to the risk of short circuit of internal electronic components, and then cause circuit alarm trouble slightly, then can lead to seal chamber to catch fire and explode seriously.
In the process of implementing the embodiment of the present application, the inventors found that: the airtight box needs to maintain the functions of ventilation and explosion prevention, so an explosion prevention valve is usually arranged on the airtight box to balance the internal and external air pressures of the airtight box. The existing explosion-proof valve is only provided with an e-PTFE (expanded polytetrafluoroethylene) film, and the e-PTFE film can only prevent liquid water from entering a seal box, but cannot prevent water vapor in air flow, so that the phenomenon of condensation of the seal box is caused.
Disclosure of Invention
The technical problem that this application embodiment mainly solved provides an explosion-proof valve and sealing device, can effectively absorb the steam in the air current of wet subassembly of accuse of flow through with dry air current, promotes explosion-proof valve's air current drying ability.
In order to solve the above technical problem, one technical solution adopted in the embodiments of the present application is: the explosion-proof valve comprises a valve body, a pressure relief mechanism and a humidity control assembly, wherein the pressure relief mechanism is movably arranged on the valve body and is used for balancing the air pressure of a sealing cavity; the humidity control assembly is arranged on the pressure release mechanism and used for absorbing water vapor in air flow flowing through the humidity control assembly.
Optionally, the pressure relief mechanism includes a first pressure relief assembly and a second pressure relief assembly, the first pressure relief assembly is movably disposed on the valve body, the second pressure relief assembly is disposed on the first pressure relief assembly, the valve body is provided with a first pressure relief channel, the first pressure relief assembly and the second pressure relief assembly jointly form a second pressure relief channel, the first pressure relief channel is communicated with the second pressure relief channel, and the humidity control assembly is disposed on the second pressure relief channel; when atmospheric pressure in the sealed chamber is less than or equal to preset atmospheric pressure, the sealed chamber passes through first pressure release passageway with second pressure release passageway carries out gas exchange with the external world, works as when atmospheric pressure in the sealed chamber is greater than when presetting atmospheric pressure, first pressure release subassembly for the valve body motion, first pressure release subassembly with the valve body forms third pressure release passageway jointly, third pressure release passageway with first pressure release passageway intercommunication, the sealed chamber passes through first pressure release passageway with third pressure release passageway carries out gas exchange with the external world.
Optionally, the valve body is further provided with a first through hole; the first pressure relief assembly comprises a first mounting seat, a connecting rod and an elastic piece, the connecting rod and the first mounting seat are respectively located at two ends of the valve body, the connecting rod penetrates through the first through hole and then is fixed with the first mounting seat, and two ends of the elastic piece are respectively abutted to the connecting rod and the valve body.
Optionally, the first mounting seat is provided with an accommodating cavity and a second through hole communicated with the accommodating cavity, the accommodating cavity is used for accommodating the humidity control assembly, and the second pressure relief assembly is connected with the first mounting seat so as to fix the humidity control assembly in the accommodating cavity.
Optionally, first pressure release subassembly still includes shielding net and first clamping ring, the shielding net with first clamping ring is located first mount pad with between the wet subassembly of accuse, first clamping ring be used for with the shielding net is fixed in accept the chamber, the shielding net covers the second through-hole.
Optionally, the humidity control assembly comprises a first adsorption layer, a second adsorption layer and an interlayer, wherein the interlayer is arranged between the first adsorption layer and the second adsorption layer, a first air hole penetrating through the first adsorption layer is formed in the thickness direction of the first adsorption layer, a second air hole penetrating through the second adsorption layer is formed in the thickness direction of the second adsorption layer, a third air hole penetrating through the interlayer is formed in the thickness direction of the interlayer, the direction of the first adsorption layer is pointed to the direction of the second adsorption layer, and the first air hole, the third air hole and the second air hole are sequentially and partially overlapped.
Optionally, the second pressure relief assembly includes a second mounting seat and a valve assembly, the second mounting seat is detachably disposed on the first mounting seat, the second mounting seat is provided with a third through hole, the second through hole, the accommodating cavity and the third through hole jointly form the second pressure relief channel, the valve assembly is disposed on the third through hole, and the valve assembly is used for controlling air to pass through the third through hole.
Optionally, the second pressure relief assembly further comprises a second pressing ring and a breathable film, the second pressing ring is used for fixing the breathable film to the second mounting seat, and the breathable film covers the third through hole.
Optionally, the valve assembly includes a first valve, a second valve and a base body, the base body is provided with an air inlet hole and an air outlet hole, the first valve and the second valve are respectively arranged on two sides of the base body, the first valve is used for opening or closing the air inlet hole, and the second valve is used for opening or closing the air outlet hole.
In order to solve the above technical problem, another technical solution adopted in the embodiment of the present application is: the sealing device comprises a sealing box and the explosion-proof valve, wherein the sealing box is provided with a sealing cavity and an opening communicated with the sealing cavity, and the explosion-proof valve is arranged at the opening.
The explosion-proof valve of the embodiment of the application comprises a valve body, a pressure relief mechanism and a humidity control assembly, wherein the pressure relief mechanism is movably arranged on the valve body, the humidity control assembly is arranged on the pressure relief mechanism, and the humidity control assembly is used for absorbing water vapor in air flow flowing through the humidity control assembly to dry the air flow. Through set up the wet subassembly of accuse in pressure release mechanism, can the effective absorption steam in the air current of the wet subassembly of accuse of flow through with dry air current, promote the air current drying ability of explosion-proof valve, effectively reduced the inside probability that appears "condensation" phenomenon of sealing equipment.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 is an exploded view of an explosion-proof valve according to an embodiment of the present application.
Fig. 2 is an exploded view of a valve body of an explosion-proof valve according to an embodiment of the present invention.
Fig. 3 is a schematic view of a first mounting seat of the explosion-proof valve according to the embodiment of the application.
Fig. 4 is a cross-sectional view from a perspective of a moisture control assembly of an explosion vent according to an embodiment of the present application.
Fig. 5 is a sectional view of the explosion-proof valve according to the embodiment of the present application when the pressure is normally released.
Fig. 6 is a sectional view illustrating rapid pressure relief of an explosion-proof valve according to an embodiment of the present invention.
Fig. 7 is a schematic view of a second mounting seat of the explosion-proof valve in the embodiment of the application.
Fig. 8 is a schematic view of a valve assembly of an explosion-proof valve according to an embodiment of the present disclosure from a perspective view.
Fig. 9 is a cross-sectional view from a perspective of a valve assembly of an explosion-proof valve according to an embodiment of the present application.
Fig. 10 is an enlarged view of a portion a in fig. 5.
FIG. 11 is a schematic connection diagram of a detection mechanism of the explosion-proof valve according to the embodiment of the present application.
Fig. 12 is a schematic view of a perspective of a sealing apparatus according to an embodiment of the present application.
Detailed Description
In order to facilitate an understanding of the present application, the present application is described in more detail below with reference to the accompanying drawings and specific embodiments. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. As used herein, the terms "inner," "outer," and the like, refer to an orientation or positional relationship based on that shown in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. In addition, the technical features mentioned in the different embodiments of the present application described below may be combined with each other as long as they do not conflict with each other.
Referring to fig. 1, the explosion-proof valve 100 includes a valve body 10, a pressure relief mechanism 20, and a humidity control assembly 30. The pressure relief mechanism 20 is movably disposed on the valve body 10, and the humidity control assembly 30 is disposed on the pressure relief mechanism 20 and can move synchronously with the pressure relief mechanism 20. The valve body 10 is used for being connected with the seal box 200, the pressure relief mechanism 20 is used for supplying gas to pass through so as to balance the internal and external air pressure of the seal box 200, the humidity control assembly 30 is used for filtering water vapor in the gas passing through the pressure relief mechanism 20, and the influence on parts in the seal box 200 caused by the water vapor in the gas entering the seal box 200 is effectively reduced.
Referring to fig. 2 and 5, the valve body 10 is provided with a first pressure relief passage 11, a first through hole 12 and a first sealing ring 13. The first relief passage 11 penetrates the valve body 10, and the first relief passage 11 is used for air to enter or exit the seal box 200. The first through hole 12 is for plugging the pressure relief mechanism 20 so that the pressure relief mechanism 20 can move relative to the valve body 10. The first packing 13 is disposed on the outer circumferential surface of the valve body 10, and the first packing 13 is used to seal a gap between the valve body 10 and the seal box 200 when the valve body 10 is mounted on the seal box 200, thereby increasing the airtightness of the seal box 200.
In the embodiment of the present application, the valve body 10 further includes a first nut 14, an outer circumferential surface of the valve body 10 is provided with an external thread, and the valve body 10 is screwed with the seal box 200. The first nut 14 and the valve body 10 are respectively positioned at the inner side and the outer side of the seal box 200, and the valve body 10 is partially threaded with the first nut 14 after passing through the seal box 200, so as to fix the valve body 10 to the seal box 200. In other embodiments, the valve body 10 may further include a second nut 15, the second nut 15 is also screwed on the external thread of the valve body 10, and the first nut 14 and the second nut 15 cooperate together to form a self-locking function, so as to prevent the valve body 10 from loosening or falling off the seal box 200.
Of course, in other embodiments, the valve body 10 and the sealing box 200 may be connected by other methods, such as welding, bonding, or clipping, which only needs to secure the valve body 10 to the sealing box 200 and ensure the sealing performance of the sealing box 200.
Referring to fig. 1 and 6, the pressure relief mechanism 20 includes a first pressure relief assembly 21 and a second pressure relief assembly 22. First pressure release subassembly 21 passes through first through-hole 12 and valve body 10 sliding connection, and second pressure release subassembly 22 can be dismantled and connect in first pressure release subassembly 21, and wet subassembly 30 of accuse sets up between first pressure release subassembly 21 and second pressure release subassembly 22, and first pressure release subassembly 21 and second pressure release subassembly 22 form the second pressure release passageway jointly, first pressure release passageway 11 and second pressure release passageway intercommunication. When the internal air pressure of the seal box 200 is less than or equal to a preset air pressure (wherein the preset air pressure is data obtained through multiple tests), the explosion-proof valve 100 is in a normal pressure relief state, the first pressure relief assembly 21 is attached to and connected with the valve body 10 and is in a sealed state, and the seal box 200 exchanges air with the outside through the first pressure relief channel 11 and the second pressure relief channel to balance the air pressure inside the seal box 200; when the air pressure inside the seal box 200 is increased sharply, the first pressure relief assembly 21 moves in a direction away from the valve body 10, the explosion-proof valve 100 is in a rapid pressure relief state, a third pressure relief channel 24 is formed between the first pressure relief assembly 21 and the valve body 10, and the air and/or substances inside the seal box 200 can pass through the first pressure relief channel 11 and be discharged to the outside from the third pressure relief channel 24, so that the air pressure inside the seal box 200 is rapidly balanced. The second pressure relief assembly 22 is used to control the entry or exit of gas into or out of the interior of the sealed box 200.
Referring to fig. 1 to 6, the first pressure relief assembly 21 includes a first mounting seat 211, a connecting rod 212, and an elastic element 213. The first mounting seat 211 is provided with a receiving cavity 2111 and a second through hole 2112 communicating with the receiving cavity 2111, the receiving cavity 2111 is used for receiving the humidity control assembly 30, and the second through hole 2112 is used for allowing the gas passing through the humidity control assembly 30 to flow through. Connecting rod 212 and first mount pad 211 are located the both ends of valve body 10 respectively, and connecting rod 212 passes behind the first through-hole 12 and is connected with first mount pad 211, and elastic component 213 cup joints with connecting rod 212, and the both ends of elastic component 213 respectively with connecting rod 212 and valve body 10 butt, and elastic component 213 is in compression state, and elastic component 213 provides the elastic force for the motion that resets of connecting rod 212. When the gas pressure inside the seal box 200 is increased sharply, the gas and/or substance inside the seal box 200 pushes the first mounting seat 211 to move away from the valve body 10, so that a third pressure relief passage 24 is formed between the first mounting seat 211 and the valve body 10, and the gas and/or substance is discharged out of the seal box 200 from the third pressure relief passage 24 to balance the gas pressure inside the seal box 200.
It is understood that, in some embodiments, a screw hole is formed on the first mounting seat 211, an external thread is formed at one end of the connecting rod 212, and the connecting rod 212 passes through the first through hole 12 and then is screwed into the screw hole of the first mounting seat 211, so that the connecting rod 212 is fixed to the first mounting seat 211. The connection rod 212 is conveniently assembled with the first mounting seat 211 by adopting a threaded manner.
In some embodiments, with continued reference to fig. 1 to 6, the first pressure relief assembly 21 further includes a sheath 214, the sheath 214 is disposed at an end of the valve body 10 away from the first mounting seat 211, and the sheath 214 is used for covering the connecting rod 212 and the elastic member 213 to prevent the connecting rod and the elastic member 213 from being corroded or corroded by gas or substances in the seal box 200, which affects the working performance of the connecting rod 212 and the elastic member 213.
In some embodiments, with continued reference to fig. 1-6, the first pressure relief assembly 21 further includes a shielding mesh 215 and a first pressure ring 216. The shielding ring and the first press ring 216 are disposed between the first mounting seat 211 and the humidity control assembly 30, the shielding ring covers the second through hole 2112, and the first press ring 216 presses the shielding net 215 to the first mounting seat 211, so as to fix the shielding net 215 in the accommodating cavity 2111. The shielding net 215 has a function of filtering gas and a function of shielding static electricity. When the air pressure inside the sealed box 200 is increased sharply, the internal air or material pushes the first mounting seat 211 open, and the shielding net 215 can also block the material from passing through the second through hole 2112, which may damage the humidity control assembly 30.
In some embodiments, with continued reference to fig. 1-6, the first pressure relief assembly 21 further includes a second sealing ring 217. The second sealing ring 217 is disposed at one end of the valve body 10 close to the first mounting seat 211, and when the third pressure relief channel 24 is closed, the second sealing ring 217 is used to seal a gap between the valve body 10 and the first mounting seat 211, so as to improve the air tightness at the third pressure relief channel 24.
Referring to fig. 1 to 6, the second pressure relief assembly 22 includes a second mounting seat 221, a valve assembly 222, a second pressing ring 223, a gas-permeable membrane 224 and an end cap 225. The second mounting seat 221 is detachably disposed on the first mounting seat 211, the valve assembly 222 is disposed on the second mounting seat 221, and the valve assembly 222 is used for controlling air passing through the second mounting seat 221, so as to adjust the internal air pressure of the sealing box 200, and keep the air pressure of the sealing box balanced with the external air pressure. The second press ring 223 is used for fixing the breathable film 224 on the second mounting seat 221, the end cover 225 is disposed at one end of the second mounting seat 221, which is away from the first mounting seat 211, and the end cover 225 is used for blocking external sundries from damaging the breathable film 224.
Referring to fig. 7, the second mounting seat 221 has a third through hole 2211 and a glue groove 2212. The third through hole 2211 penetrates through the second mounting seat 221, and the third through hole 2211, the accommodating cavity 2111, the second through hole 2112 and the valve assembly 222 form a second pressure relief channel together for air circulation. The glue groove 2212 is disposed at an end of the second mounting base 221 away from the first mounting base 211, and the glue groove 2212 is used for accommodating adhesive glue, so that the end cover 225 can be fixed to the second fixing base.
Of course, in the embodiment of the present application, the end cap 225 and the second mounting seat 221 are fixed by an adhesive connection, and it is understood that in some other embodiments, the connection may also be a welding, a clamping, or a screwing connection.
Referring to fig. 6-9, the valve assembly 222 includes a first valve 2221, a second valve 2222, and a base 2223. The base 2223 is provided with an air inlet hole 22231 and an air outlet hole 22232, the air inlet hole 22231 and the air outlet hole 22232 both penetrate through the base 2223 along the thickness direction of the base 2223, the first valve 2221 and the second valve 2222 are respectively arranged on two sides of the base 2223, the first valve 2221 is used for opening or closing the air inlet hole 22231, and the second valve 2222 is used for opening or closing the air outlet hole 22232. Specifically, when the internal air pressure of the sealed box 200 is smaller than the external air pressure, under the action of the pressure, the external air pushes the first valve 2221 open and enters from the air inlet hole 22231, and sequentially passes through the second pressure relief channel and the first pressure relief channel 11 to reach the inside of the sealed box 200, and in the process, the second valve 2222 is in a state of closing the air outlet hole 22232; when the internal pressure of the sealed box 200 is greater than the external pressure, under the action of pressure, the air inside the sealed box 200 sequentially passes through the first pressure relief channel 11 and the second pressure relief channel to reach the air outlet 22232 and pushes the second valve 2222 open to reach the external side, and in the process, the first valve 2221 is in a state of closing the air inlet 22231.
In this embodiment, the air permeable membrane 224 is an e-PTFE (expanded polytetrafluoroethylene) membrane, the air permeable membrane 224 covers the third through hole 2211, and the air permeable membrane 224 can prevent liquid water from entering the inside of the sealing box 200 through the third through hole 2211 on the premise of keeping air permeability, so as to effectively improve the drying degree inside the sealing box 200.
In some embodiments, with continued reference to fig. 1 and fig. 6, the second pressure releasing assembly 22 further includes a metal plate 226, the metal plate 226 is disposed between the second pressing ring 223 and the end cap 225, and the metal plate 226 is used for cooperating with an external magnetic attraction structure to check whether the third pressure releasing channel 24 between the valve body 10 and the first mounting seat 211 can be normally opened under a condition of a preset pressure. It is understood that in some embodiments, when the end cap 225 has a magnetic attraction feature, the metal plate 226 may be omitted and the end cap 225 can be checked for cooperation with an external magnetic attraction feature.
In some embodiments, with continued reference to fig. 1 and 6, the second pressure relief assembly 22 further includes a third press ring 228, the third press ring 228 is disposed at one end of the third through hole 2211 close to the first mounting seat 211 in an interference fit manner, and the third press ring 228 is used for supporting the valve assembly 222, so as to fix the valve assembly 222 in the third through hole 2211 and prevent the valve assembly 222 from sliding out of the third through hole 2211.
In some embodiments, with continued reference to fig. 1-6, the second pressure relief assembly 22 further includes a third sealing ring 227. One end of the second mounting seat 221, which is close to the first mounting seat 211, is provided with an external thread, one end of the first mounting seat 211, which is close to the second mounting seat 221, is provided with an internal thread, the first mounting seat 211 and the second mounting seat 221 are connected through a thread, and the third sealing ring 227 is arranged on the second mounting seat 221 so as to seal a gap between the first mounting seat 211 and the second mounting seat 221 after being screwed. The first mounting seat 211 and the second mounting seat 221 are screwed, so that the humidity control assembly 30 which cannot normally work can be replaced conveniently in time.
Referring to fig. 1 to 6, the humidity control assembly 30 includes a first absorption layer 31, a second absorption layer 32, and an interlayer 33. The interlayer 33 is disposed between the first adsorption layer 31 and the second adsorption layer 32, a first vent hole 311 penetrating the first adsorption layer 31 is formed in the layer thickness direction of the first adsorption layer 31, a second vent hole 321 penetrating the second adsorption layer 32 is formed in the layer thickness direction of the second adsorption layer 32, a third vent hole 331 penetrating the interlayer 33 is formed in the layer thickness direction of the interlayer 33, and the first vent hole 311, the third vent hole 331 and the second vent hole 321 are partially overlapped in this order in the direction in which the first adsorption layer 31 is directed to the second adsorption layer 32. The first adsorption layer 31, the second adsorption layer 32 and the interlayer 33 are all made of water-absorbing material, such as absorbent cotton, sponge, etc., so that the moisture in the air passing through the humidity control assembly 30 can be adsorbed by the first adsorption layer 31, the second adsorption layer 32 and the interlayer 33, and the function of drying the air flow is achieved. The first vent 311, the second vent 321 and the third vent 331 are partially overlapped, so that the path of the air flow can be changed, and the drying capability of the humidity control assembly 30 can be effectively improved.
In some embodiments, referring to fig. 10 and 11, the explosion-proof valve 100 further includes a detection mechanism 40, the detection mechanism 40 is disposed on the first pressure relief assembly 21, and the detection mechanism 40 is configured to detect whether a third pressure relief channel 24 formed between the first pressure relief assembly 21 and the valve body 10 is opened.
The detection mechanism 40 includes a resistance coil 41, a probe 42, a power supply 43, a resistance detector, and a battery management system 45, the resistance coil 41, the probe 42, the power supply 43, and a current detector 44 are sequentially and electrically connected in series to form a closed-loop circuit (the circuit is provided with a circuit protection component), the probe 42 and the resistance coil 41 are in contact connection, and the current detector 44 is connected to the battery management system 45. The resistance coil 41 is wound on the inner wall surface of the sheath 214, the probe 42 is arranged at one end of the connecting rod 212, the probe 42 is in contact with the resistance coil 41, and when the connecting rod 212 slides in the first through hole 12, the probe 42 is in contact with different positions of the resistance coil 41 to change the effective resistance value of the resistance coil 41. The current detector 44 is configured to detect a current parameter in the closed-loop circuit, and send a detection result to the battery management system 45, and the battery management system 45 determines whether the current changes or whether a change amplitude exceeds a preset value according to the detection result, so as to determine whether the third pressure relief channel 24 is in an open state. The detection mechanism 40 is provided to facilitate the user to know the working state of the explosion-proof valve 100 quickly and accurately, so that a countermeasure can be taken in time when the explosion-proof valve 100 is in an abnormal pressure relief state.
The explosion-proof valve 100 of the embodiment of the application comprises a valve body 10, a pressure relief mechanism 20 and a humidity control assembly 30, wherein the pressure relief mechanism 20 is movably arranged on the valve body 10, the humidity control assembly 30 is arranged on the pressure relief mechanism 20, and the humidity control assembly 30 is used for absorbing water vapor in air flow flowing through the humidity control assembly 30 so as to dry the air flow. Through set up accuse wet subassembly 30 in pressure release mechanism 20, can effectively absorb the steam in the air current of the wet subassembly 30 of accuse of flowing through with dry air current, promote explosion-proof valve 100's air current drying ability, effectively reduced the inside probability that "condensation" phenomenon appears of seal box 200.
Referring to fig. 12, the present application further provides an embodiment of the sealing apparatus 1000, where the sealing apparatus 1000 includes a sealing box 200 and the above-mentioned explosion-proof valve 100, the sealing box 200 is provided with a sealing cavity 201 and an opening 202 communicating with the sealing cavity 201, the explosion-proof valve 100 is disposed in the opening 202, the explosion-proof valve 100 is used to balance the air pressure inside the sealing cavity 201 and the air pressure outside, and when the sealing cavity 201 exchanges gas with the outside, the exchanged air flow is dried, so as to reduce the water vapor entering the sealing cavity 201, and reduce the probability of the sealing apparatus 1000 occurring a "condensation" phenomenon. In some embodiments, the sealed case 200 may be a battery pack, or other sealed device that needs to be air permeable and dry.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings, or which are directly or indirectly applied to other related technical fields, are intended to be included within the scope of the present application.

Claims (10)

1. An explosion-proof valve for a sealed box provided with a sealed chamber, characterized in that it comprises:
a valve body;
the pressure relief mechanism is movably arranged on the valve body and is used for balancing the air pressure of the sealing cavity;
and the humidity control assembly is arranged on the pressure relief mechanism and is used for absorbing water vapor in the airflow flowing through the humidity control assembly.
2. Explosion-proof valve according to claim 1,
the pressure relief mechanism comprises a first pressure relief assembly and a second pressure relief assembly, the first pressure relief assembly is movably arranged on the valve body, the second pressure relief assembly is arranged on the first pressure relief assembly, the valve body is provided with a first pressure relief channel, the first pressure relief assembly and the second pressure relief assembly jointly form a second pressure relief channel, the first pressure relief channel is communicated with the second pressure relief channel, and the humidity control assembly is arranged on the second pressure relief channel;
when atmospheric pressure in the sealed chamber is less than or equal to preset atmospheric pressure, the sealed chamber passes through first pressure release passageway with second pressure release passageway carries out gas exchange with the external world, works as when atmospheric pressure in the sealed chamber is greater than when presetting atmospheric pressure, first pressure release subassembly for the valve body motion, first pressure release subassembly with the valve body forms third pressure release passageway jointly, third pressure release passageway with first pressure release passageway intercommunication, the sealed chamber passes through first pressure release passageway with third pressure release passageway carries out gas exchange with the external world.
3. Explosion-proof valve according to claim 2,
the valve body is also provided with a first through hole;
the first pressure relief assembly comprises a first mounting seat, a connecting rod and an elastic piece, the connecting rod and the first mounting seat are respectively located at two ends of the valve body, the connecting rod penetrates through the first through hole and then is fixed with the first mounting seat, and two ends of the elastic piece are respectively abutted to the connecting rod and the valve body.
4. Explosion-proof valve according to claim 3,
the first mounting seat is provided with an accommodating cavity and a second through hole communicated with the accommodating cavity, the accommodating cavity is used for accommodating the humidity control assembly, and the second pressure relief assembly is connected with the first mounting seat so as to fix the humidity control assembly in the accommodating cavity.
5. Explosion-proof valve according to claim 4,
first pressure release subassembly still includes shielding net and first clamping ring, the shielding net with first clamping ring is located first mount pad with between the wet subassembly of accuse, first clamping ring be used for with the shielding net is fixed in accept the chamber, the shielding net covers the second through-hole.
6. Explosion-proof valve according to claim 5,
the moisture control assembly comprises a first adsorption layer, a second adsorption layer and an interlayer, wherein the interlayer is arranged between the first adsorption layer and the second adsorption layer, a first air hole penetrating through the first adsorption layer is formed in the layer thickness direction of the first adsorption layer, a second air hole penetrating through the second adsorption layer is formed in the layer thickness direction of the second adsorption layer, a third air hole penetrating through the interlayer is formed in the layer thickness direction of the interlayer, the first adsorption layer points to the direction of the second adsorption layer, and the third air hole and the second air hole are sequentially and partially overlapped.
7. Explosion-proof valve according to claim 5,
the second pressure relief assembly comprises a second mounting seat and a valve assembly, the second mounting seat is detachably arranged on the first mounting seat, a third through hole is formed in the second mounting seat, the second through hole accommodates the cavity, and the third through hole jointly forms the second pressure relief channel, the valve assembly is arranged on the third through hole, and the valve assembly is used for controlling gas to pass through the third through hole.
8. Explosion-proof valve according to claim 7,
the second pressure release assembly further comprises a second pressing ring and a breathable film, the second pressing ring is used for fixing the breathable film to the second mounting seat, and the breathable film covers the third through hole.
9. Explosion-proof valve according to claim 7,
the valve assembly comprises a first valve, a second valve and a base body, wherein the base body is provided with an air inlet hole and an air outlet hole, the first valve and the second valve are respectively arranged on two sides of the base body, the first valve is used for opening or closing the air inlet hole, and the second valve is used for opening or closing the air outlet hole.
10. A sealing device, characterized in that the sealing device comprises a sealing box and an explosion-proof valve according to any one of claims 1-9, the sealing box is provided with a sealing cavity and an opening communicated with the sealing cavity, and the explosion-proof valve is arranged at the opening.
CN202210742907.XA 2022-06-27 2022-06-27 Explosion-proof valve and sealing equipment Pending CN115020906A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210742907.XA CN115020906A (en) 2022-06-27 2022-06-27 Explosion-proof valve and sealing equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210742907.XA CN115020906A (en) 2022-06-27 2022-06-27 Explosion-proof valve and sealing equipment

Publications (1)

Publication Number Publication Date
CN115020906A true CN115020906A (en) 2022-09-06

Family

ID=83077664

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210742907.XA Pending CN115020906A (en) 2022-06-27 2022-06-27 Explosion-proof valve and sealing equipment

Country Status (1)

Country Link
CN (1) CN115020906A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116742264A (en) * 2023-08-15 2023-09-12 深圳海辰储能控制技术有限公司 Battery pack and electric equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116742264A (en) * 2023-08-15 2023-09-12 深圳海辰储能控制技术有限公司 Battery pack and electric equipment

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