Fire extinguishing device for new energy vehicle charging pile

Abstract

The application relates to a fire extinguishing device of a new energy automobile charging pile, which comprises a storage part for storing heat-absorbing medium, a spraying part for spraying the heat-absorbing medium and a conveying pipe for connecting the storage part and the spraying part; a control valve for controlling the on-off of the conveying pipe is arranged on the conveying pipe; a reaction tank for monitoring temperature is fixedly connected to the outer wall of the conveying pipe; a piston is slidably and sealingly arranged in the reaction tank; heat-absorbing expansion material is arranged on one side of the piston along the sliding direction; and the piston is in transmission connection with a valve rod in the control valve. The fire extinguishing device can solve the problem that some charging piles in the prior art are not provided with fire extinguishing devices, the fire cannot be timely extinguished when the charging pile breaks down and catches fire, the fire gradually becomes larger, the property loss range is expanded, and the threat to the personal safety of nearby people is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of charging piles, and in particular to a fire extinguishing device for a new energy vehicle charging pile. Background Art

[0002] A charging pile, also known as a new energy electric vehicle charging station or new energy electric vehicle power supply equipment, is a device that provides electrical energy to new energy electric vehicles, enabling new energy electric vehicles to store enough electricity to support their operation.

[0003] During the charging process, the electrical equipment within the charging pile converts and transmits current, generating a certain amount of heat, such as in electronic components like the power conversion module. This is especially true for DC charging piles, which generate a large amount of heat due to their rapid charging characteristics. If the charging pile's cooling system is inadequate or it is operated at high load for extended periods, heat can accumulate, posing a safety hazard.

[0004] In existing technology, cooling fans are typically installed inside or outside charging piles. The rotation of the fans generates airflow, which removes the hot air inside the charging pile and discharges it into the external environment. This promotes heat dissipation within the charging pile and reduces the risk of fire caused by heat accumulation within the charging pile. However, some charging piles are not equipped with fire extinguishing devices. When a charging pile malfunctions and catches fire, timely extinguishing is difficult, causing the fire to gradually expand, expanding the scope of property damage and increasing the threat to the safety of nearby people. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a fire extinguishing device for a new energy vehicle charging pile, so as to solve the problem in the prior art that some charging piles are not equipped with fire extinguishing devices, and when a charging pile fails and catches fire, it is difficult to extinguish the fire in time, causing the fire to gradually grow, expanding the scope of property loss, and increasing the threat to the personal safety of nearby people.

[0006] The present invention is achieved through the following technical solutions:

[0007] A fire extinguishing device for a new energy vehicle charging pile includes a storage portion for storing a heat absorbing medium, a spraying portion for spraying the heat absorbing medium, and a delivery pipe for connecting the storage portion and the spraying portion;

[0008] The delivery pipe is provided with a control valve for controlling the on and off of the delivery pipe;

[0009] The outer wall of the delivery pipe is fixedly connected to a reaction tank for monitoring temperature. A piston is slidably and sealed in the reaction tank. Heat-absorbing expansion material is provided on one side of the piston along the sliding direction, and the piston is transmission-connected to the valve stem in the control valve.

[0010] Further, the control valve comprises a valve rod and a first ball, the first ball is embedded in the delivery pipe, and the outer circular surface of the first ball is attached to the inner wall of the delivery pipe, and a first through hole is formed in the first ball and penetrates the first ball;

[0011] One end of the valve rod is fixedly connected with the outer circular surface of the first ball, the other end penetrates the side wall of the delivery pipe and extends out of the delivery pipe and is rotationally connected with the side wall of the delivery pipe, and the axis of the valve rod is perpendicular to the axis of the first through hole.

[0012] Further, a gear is coaxially fixedly connected to the middle part of the valve rod, the reaction tank is a hollow structure with one end open, and the heat-absorbing expansion material is arranged at the end of the piston away from the opening of the reaction tank;

[0013] The piston is provided with a rack at the end facing the opening of the reaction tank, one end of the rack is fixedly connected with the piston, and the other end protrudes out of the opening of the reaction tank and is engaged with the gear.

[0014] Further, a first spring is arranged at the end of the piston facing the opening of the reaction tank, one end of the first spring is fixedly connected with the piston, and the other end is fixedly connected with the opening end of the reaction tank, and when the first spring is in a natural state of extension, the axis of the first through hole is perpendicular to the axis of the delivery pipe.

[0015] Further, the storage part comprises a storage tank with one end open and in a hollow structure, a sealing disc is arranged in the storage tank for sealing the opening of the storage tank, and the sealing disc is in sliding and sealing cooperation with the inner wall of the storage tank;

[0016] The sealing disc is provided with a second spring at the end facing the opening of the storage tank, one end of the second spring is fixedly connected with the sealing disc, and the other end is fixedly connected with the opening end of the storage tank, and when the second spring is in a natural state of extension, the sealing disc abuts against the inner wall of the storage tank away from the opening.

[0017] Further, a heat conducting pipe is arranged on the storage tank, one end of the heat conducting pipe is fixedly connected with the bottom of the side wall of the storage tank and is in communication, and the other end is embedded in the inside of the charging pile and is in contact with the electronic components in the charging pile.

[0018] Further, the delivery pipe is in an L shape with the input end horizontal and the output end vertical, a vertical branch pipe is arranged in the middle part of the delivery pipe, one end of the branch pipe is fixedly connected with the delivery pipe and is in communication, and the other end is fixedly connected with the heat conducting pipe away from the storage tank and is in communication;

[0019] A power pump is arranged outside the storage tank, the input end of the power pump is fixedly connected with the bottom end of the side wall of the storage tank and is in communication, and the output end is fixedly connected with the input end of the delivery pipe and is in communication.

[0020] Further, the branch pipe is internally provided with a second ball, and an outer circular surface of the second ball is attached to an inner wall of the branch pipe, and a second through hole penetrating the second ball is formed on the second ball;

[0021] The valve rod is inserted into the branch pipe at an end away from the first ball and is fixedly connected to the outer circular surface of the second ball, and an axis of the valve rod is perpendicular to an axis of the second through hole, and the axis of the second through hole is perpendicular to an axis of the first through hole.

[0022] Further, the heat pipe is provided with a heat dissipation block for dissipating heat on the heat pipe, and the heat dissipation block is sleeved on the heat pipe and fixedly connected, and the heat dissipation block is arranged outside the charging pile.

[0023] Further, the heat dissipation block is in a cylindrical shape, and a plurality of heat dissipation fins are uniformly arranged on an outer circular surface of the heat dissipation block in a circumferential direction;

[0024] One side edge of the heat dissipation fin is fixedly connected to the outer circular surface of the heat dissipation block, and the other side edge extends away from the heat dissipation block in a radial direction of the heat dissipation block.

[0025] The beneficial effects of the present application are:

[0026] The fire extinguishing device of the new energy automobile charging pile is characterized in that: the storage part for storing the heat-absorbing medium and the spraying part for spraying the heat-absorbing medium are arranged, the storage part and the spraying part are connected by the conveying pipe, the heat-absorbing medium in the storage part can be sprayed out of the spraying part, the heat of the burning matter in the charging cabinet can be absorbed, the temperature of the burning matter is reduced, and when the temperature is below the ignition point of the burning matter, the combustion process is forced to stop, so that the fire extinguishing is realized.

[0027] The reaction tank is arranged, and the heat-absorbing and expanding material is stored in the reaction tank, when the temperature around the reaction tank rises, the reaction tank conducts part of the heat into the inside of the reaction tank, the heat-absorbing and expanding material continuously absorbs heat and continuously expands, so as to continuously push the piston to slide in the reaction tank, and because the piston is in transmission connection with the valve rod of the control valve, the valve rod rotates until the control valve is opened, the conveying pipe is connected, the heat-absorbing medium is moved out of the storage tank and smoothly passes through the conveying pipe, and is sprayed into the inside of the charging cabinet from the spraying part, so as to achieve the purpose of automatic fire extinguishing. That is, when the charging cabinet fails and catches fire, the fire extinguishing device automatically sprays the heat-absorbing material, timely extinguishes the fire, limits the continuous expansion of the fire, reduces the scope of property loss, and reduces the threat to the personal safety of the nearby personnel.

[0028] Other advantages, objects, and features of the present application will be apparent to those skilled in the art from the following specification, and will be learned from the study of the following text, or will be taught from the practice of the present application. The objects and other advantages of the present application can be achieved and obtained by the following specification. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a perspective view of the embodiment of the present application (viewing angle one);

[0030] Figure 2 It is a perspective view of the embodiment of the present application (viewing angle two);

[0031] Figure 3 It is a perspective view of the extinguishing device in the embodiment of the present application;

[0032] Figure 4 It is a perspective view of the delivery pipe, the reaction tank and the control valve in the embodiment of the present application;

[0033] Figure 5 It is a perspective view of the reaction tank in the embodiment of the present application;

[0034] Figure 6 It is an exploded view of the reaction tank in the embodiment of the present application;

[0035] Figure 7 It is a perspective view of the valve rod in the embodiment of the present application;

[0036] Figure 8 It is a perspective view of the heat dissipation block in the embodiment of the present application;

[0037] Figure 9 It is an exploded view of the storage tank in the embodiment of the present application.

[0038] In the figure: 1, delivery pipe; 11, branch pipe; 12, spray head; 2, reaction tank; 21, piston; 22, first spring; 23, rack; 3, valve rod; 31, first ball; 311, first through hole; 32, second ball; 321, second through hole; 33, gear; 4, storage tank; 41, sealing disc; 42, second spring; 43, heat pipe; 5, power pump; 6, heat dissipation block; 61, heat dissipation fin; 7, charging pile. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the application provided in the drawings is not intended to limit the scope of the application claimed, but merely represents selected embodiments of the application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the application without creative labor fall within the scope of the protection of the application.

[0041] It should be noted that similar reference numbers and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0042] In the above description of the application, it should be noted that the terms "one side", "the other side" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed, and are only for the convenience of describing the application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application. In addition, the terms "first", "second" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0043] In addition, the terms "same" and the like do not mean that the parts must be absolutely the same, but there can be slight differences. The term "vertical" only means that the positional relationship between the parts is more vertical than "parallel", and does not mean that the structure must be completely vertical, but can be slightly inclined.

[0044] Please refer to Figures 1-9 The application provides a technical solution: a fire extinguishing device for a new energy vehicle charging pile 7, comprising a storage part for storing heat-absorbing medium, a spraying part for spraying heat-absorbing medium, and a conveying pipe 1 for connecting the storage part and the spraying part;

[0045] The conveying pipe 1 is provided with a control valve for controlling the on-off of the conveying pipe 1;

[0046] The outer wall of the conveying pipe 1 is fixedly connected with a reaction tank 2 for monitoring temperature, the reaction tank 2 is slidably and sealingly fitted with a piston 21, the piston 21 is provided with heat-absorbing expansion material on one side along the sliding direction, and the piston 21 is in transmission connection with a valve rod 3 in the control valve.

[0047] By providing the storage part storing heat-absorbing medium and the spraying part spraying heat-absorbing medium, the storage part and the spraying part are connected by the conveying pipe 1, so that the heat-absorbing medium in the storage part can be sprayed out of the spraying part to absorb the heat of the burning material in the charging cabinet, reduce the temperature of the burning material, and when the temperature is below the ignition point of the burning material, the burning process is forced to stop, thereby achieving fire extinguishing.

[0048] When the temperature around the reaction tank 2 rises, the reaction tank 2 conducts part of the heat into the inside of the reaction tank 2, the heat-absorbing expansion material continuously absorbs heat and continuously expands to continuously push the piston 21 to slide in the reaction tank 2, and because the piston 21 is in transmission connection with the valve rod 3 of the control valve, the valve rod 3 rotates until the control valve is opened, the conveying pipe 1 is communicated, the heat-absorbing medium is removed from the storage tank 4 and smoothly passes through the conveying pipe 1, and is sprayed from the spraying part into the inside of the charging cabinet to achieve the purpose of automatic fire extinguishing. That is, when the charging cabinet fails and catches fire, the fire extinguishing device automatically sprays the heat-absorbing material to timely extinguish the fire, limit the continuous expansion of the fire, reduce the scope of property loss, and reduce the threat to the personal safety of nearby personnel.

[0049] In the embodiment, the control valve comprises the valve rod 3 and a first ball 31, the first ball 31 is embedded in the conveying pipe 1, the outer circular surface of the first ball 31 is attached to the inner wall of the conveying pipe 1, and a first through hole 311 penetrating the first ball 31 is formed in the first ball 31.

[0050] One end of the valve rod 3 is fixedly connected to the outer circular surface of the first ball 31, the other end penetrates the side wall of the conveying pipe 1 and extends out of the conveying pipe 1 and is in rotational cooperation with the side wall of the conveying pipe 1, and the axis of the valve rod 3 is perpendicular to the axis of the first through hole 311.

[0051] The first ball 31 is embedded in the conveying pipe 1 to block the conveying pipe 1, the first through hole 311 serves as a flow channel for the heat-absorbing medium. During the rotation of the valve rod 3, the first ball 31 rotates with the valve rod 3, when the axis of the first through hole 311 is perpendicular to the axis of the conveying pipe 1, the openings at both ends of the first through hole 311 are covered and blocked by the inner side wall of the conveying pipe 1, the first ball 31 blocks the conveying pipe 1, and the heat-absorbing medium is stably stored in the storage part; when the axis of the first through hole 311 is parallel to the axis of the conveying pipe 1, the openings at both ends of the first through hole 311 are exposed and open, the inside of the conveying pipe 1 is unobstructed, and the heat-absorbing medium can smoothly pass through the conveying pipe 1 and be sprayed from the spraying part to perform fire extinguishing work.

[0052] In the embodiment, a gear 33 is coaxially fixedly connected to the middle part of the valve rod 3, the reaction tank 2 has a hollow structure with one end open, and the heat-absorbing expansion material is arranged at the end of the piston 21 away from the open end of the reaction tank 2.

[0053] The piston 21 is provided with a gear rack 23 at the end facing the open end of the reaction tank 2, one end of the gear rack 23 is fixedly connected to the piston 21, and the other end protrudes out of the open end of the reaction tank 2 and is in meshing cooperation with the gear 33.

[0054] The transmission structure composed of gear 33 and rack 23 associates the sliding of piston 21 in reaction tank 2 with the rotation of valve rod 3. The sliding of piston 21 in reaction tank 2 drives the rotation of valve rod 3, so as to make first sphere 31 rotate, thereby controlling the opening and closing of delivery pipe 1, so as to achieve the purpose of automatically controlling the device to extinguish fire.

[0055] In this embodiment, first spring 22 is arranged on the opening end of piston 21 facing reaction tank 2, one end of first spring 22 is fixedly connected with piston 21, the other end is fixedly connected with the opening end of reaction tank 2, and the axis of first through hole 311 is perpendicular to the axis of delivery pipe 1 when first spring 22 is in natural extension state.

[0056] First spring 22 is used for flexibly supporting piston 21. In normal temperature environment, the volume of heat-absorbing expansion material shrinks, first spring 22 freely extends to push piston 21 to move towards the closed end of reaction tank 2, rack 23 drives valve rod 3 and first sphere 31 to rotate through gear 33, until the opening ends of first through hole 311 are covered and blocked by the side wall of delivery pipe 1, and first spring 22 limits the free sliding of piston 21 towards the opening end of reaction tank 2, so that first sphere 31 keeps the state of blocking delivery pipe 1, thereby reducing the probability of leakage of heat-absorbing medium in storage part.

[0057] In this embodiment, the storage part includes storage tank 4 with a hollow structure at one end opening, sealing disc 41 for blocking the opening of storage tank 4 is arranged in storage tank 4, and sealing disc 41 is in sliding and sealing cooperation with the inner wall of storage tank 4.

[0058] Second spring 42 is arranged on the opening end of sealing disc 41 facing storage tank 4, one end of second spring 42 is fixedly connected with sealing disc 41, the other end is fixedly connected with the opening end of storage tank 4, and sealing disc 41 abuts against the inner wall of storage tank 4 away from the opening in the natural extension state of second spring 42.

[0059] Second spring 42 flexibly supports sealing disc 41. When heat-absorbing medium is stored in storage tank 4, sealing disc 41 is pushed to move towards the opening end of storage tank 4, second spring 42 is squeezed and contracted, sealing disc 41 squeezes heat-absorbing medium, and the pressure of heat-absorbing medium in storage tank 4 is higher than atmospheric pressure; when delivery pipe 1 is unblocked, second spring 42 releases energy, heat-absorbing medium is squeezed by sealing disc 41 and sprayed from the spraying part, thereby performing fire extinguishing work.

[0060] In this embodiment, heat-conducting pipe 43 is arranged on storage tank 4, one end of heat-conducting pipe 43 is fixedly connected with the side wall bottom of storage tank 4 and is in communication, the other end is embedded in the inside of charging pile 7 and is in contact with the electronic components in charging pile 7.

[0061] The heat conduction pipe 43 is made of copper material, and a copper sheet is welded at the position of the heat conduction pipe 43 in contact with the electronic component, and the heat conduction pipe 43 contacts the electronic component through the copper sheet to conduct the heat generated by the electronic component to the heat conduction pipe 43, and then to the external storage tank 4 of the charging pile 7 through the heat conduction pipe 43, so as to assist the heat dissipation of the electronic component and reduce the risk of temperature accumulation and fire in the charging pile 7.

[0062] In the embodiment, the conveying pipe 1 is L-shaped with the input end horizontal and the output end vertical, a vertical branch pipe 11 is arranged in the middle of the conveying pipe 1, one end of the branch pipe 11 is fixedly connected with the conveying pipe 1 and communicates with each other, and the other end is fixedly connected with one end of the heat conduction pipe 43 away from the storage tank 4 and communicates with each other.

[0063] The storage tank 4 is externally provided with a power pump 5, the input end of the power pump 5 is fixedly connected with the bottom end of the side wall of the storage tank 4 and communicates with each other, and the output end is fixedly connected with the input end of the conveying pipe 1 and communicates with each other.

[0064] The conveying pipe 1, the branch pipe 11, the heat conduction pipe 43, the storage tank 4 and the power pump 5 form a closed-loop transmission pipe network, the power pump 5 provides power to the heat-absorbing medium, so that the heat-absorbing medium flows unidirectionally in the transmission pipe network, when the heat-absorbing medium moves to the vicinity of the electronic component, the heat-absorbing medium absorbs the heat generated by the electronic component and moves to the outside of the charging cabinet, after the heat-absorbing medium dissipates the heat outside the charging pile 7, the heat-absorbing medium enters the charging pile 7 again under the action of the power pump 5, so as to continuously transport the heat generated by the electronic component to the outside of the charging pile 7, thereby reducing the probability of fire caused by failure of the charging pile 7.

[0065] In the embodiment, the second ball 32 is arranged in the branch pipe 11, the outer circular surface of the second ball 32 is attached to the inner wall of the branch pipe 11, and the second through hole 321 penetrating the second ball 32 is arranged on the second ball 32.

[0066] The valve rod 3 is inserted into the branch pipe 11 away from the first ball 31 and is fixedly connected with the outer circular surface of the second ball 32, the axis of the valve rod 3 is perpendicular to the axis of the second through hole 321, and the axis of the second through hole 321 is perpendicular to the axis of the first through hole 311.

[0067] The delivery pipe 1 and the branch pipe 11 form a tee structure, wherein the input end of the delivery pipe 1 is the input end of the tee structure, and the output end of the delivery pipe 1 and the output end of the branch pipe 11 are two output ends of the tee structure. The second ball 32 is used to block the branch pipe 11. Since the first ball 31 and the second ball 32 are fixedly connected to the two ends of the valve rod 3 respectively, and the axis of the first through hole 311 in the first ball 31 is perpendicular to the axis of the second through hole 321 in the second ball 32, when the two end openings of the first through hole 311 are exposed and open, the two end openings of the second through hole 321 are blocked by the side cover of the inner side wall of the branch pipe 11; when the two end openings of the first through hole 311 are covered and blocked by the side wall of the delivery pipe 1, the two end openings of the second through hole 321 are exposed and open.

[0068] That is, the tee structure can only have one output end connected to the input end at the same time. When the ambient temperature in the charging pile 7 is low or at room temperature, the first spring 22 is freely stretched to cause the first ball 31 to block and block the output end of the delivery pipe 1, so that the heat-absorbing medium circulates in the closed loop transmission pipe network formed by the delivery pipe 1, the branch pipe 11, the heat-conducting pipe 43, the storage tank 4 and the power pump 5 to assist the heat dissipation of the electronic components.

[0069] When the ambient temperature in the charging pile 7 is too high or on fire, the heat-absorbing and expanding material absorbs heat and expands to push the piston 21 to press the first spring 22, so that the second ball 32 blocks and blocks the output end of the branch pipe 11, and the output end of the delivery pipe 1 is opened and unblocked, so that the heat-absorbing medium is sprayed out of the spraying part to cool and extinguish the inside of the charging pile 7. And the storage tank 4 is a hollow structure with one end open, and the sealing disc 41 slides in the storage tank 4 to balance the pressure on both sides of the sealed tank, so that the heat-absorbing medium continuously moves out of the spraying part.

[0070] In this embodiment, the heat-conducting pipe 43 is provided with a heat dissipation block 6 for dissipating heat on the heat-conducting pipe 43, and the heat dissipation block 6 is sleeved outside the heat-conducting pipe 43 and fixedly connected, and the heat dissipation block 6 is arranged outside the charging pile 7.

[0071] The heat dissipation block 6 is made of copper material, which has high thermal conductivity and can quickly transfer heat. By arranging the heat dissipation block 6 outside the heat-conducting pipe 43, the contact area with air is increased, heat dissipation is promoted, and the heat-absorbing medium is cooled to facilitate continuous heat transfer work of the heat-absorbing medium.

[0072] In this embodiment, the heat dissipation block 6 is in a cylindrical shape, and a plurality of heat dissipation fins 61 are uniformly arranged on the outer circular surface of the heat dissipation block 6 in the circumferential direction.

[0073] One side of the heat dissipation fin 61 is fixedly connected with the outer circular surface of the heat dissipation block 6, and the other side extends away from the heat dissipation block 6 in the radial direction of the heat dissipation block 6.

[0074] A plurality of fins 61 are arranged on the outer circumferential surface of the heat dissipation block 6 to increase the surface area of the heat dissipation block 6 and further promote heat dissipation.

[0075] The spraying part is a spray head 12, and the input end of the spray head 12 is fixedly connected and communicated with the output end of the conveying pipe 1. The specific model of the spray head 12 is Shanghai Mintai ZSTWC. The heat-absorbing medium is ultrapure water. The ultrapure water has high specific heat capacity and good fluidity, can better realize the function of heat conduction and heat transfer, and has very low electrical conductivity. This is because in the ultrapure water, various ions, microorganisms, organic matter and almost all other impurities are removed, resulting in very low ion concentration in the water, so the electrical conductivity is very poor, which makes the ultrapure water not easy to conduct electricity in the cooling and fire extinguishing process, and reduces the probability of further damage to the electronic components inside the charging pile 7. The heat-absorbing and expanding material is alcohol. The alcohol is in liquid state at room temperature, and will be converted into gaseous state after being heated, so that the pressure in the reaction tank 2 is increased, thereby driving the piston 21 to slide. When the temperature around the reaction tank 2 is reduced, the alcohol will be condensed into liquid state, reducing the pressure in the reaction tank 2, and prompting the piston 21 to return to the initial position, so that the reaction tank 2 can be repeatedly used.

[0076] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the purpose and scope of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A fire extinguishing device for a new energy vehicle charging pile, characterized by: The application relates to a heat-absorbing medium storage device, which comprises a storage part for storing heat-absorbing medium, a spraying part for spraying the heat-absorbing medium, and a conveying pipe (1) for connecting the storage part and the spraying part. The conveying pipe (1) is provided with a control valve for controlling the on-off of the conveying pipe (1). The outer wall of the conveying pipe (1) is fixedly connected with a reaction tank (2) for monitoring temperature, the reaction tank (2) is slidably and sealingly connected with a piston (21), one side of the piston (21) along the sliding direction is provided with heat-absorbing expansion material, and the piston (21) is in transmission connection with a valve rod (3) in the control valve. The control valve comprises the valve rod (3) and a first sphere (31), the first sphere (31) is embedded in the conveying pipe (1), the outer circular surface of the first sphere (31) is attached to the inner wall of the conveying pipe (1), and the first sphere (31) is provided with a first through hole (311) penetrating through the first sphere (31). One end of the valve rod (3) is fixedly connected with the outer circular surface of the first sphere (31), the other end penetrates through the side wall of the conveying pipe (1) and extends out of the conveying pipe (1) and is in rotary connection with the side wall of the conveying pipe (1), and the axis of the valve rod (3) is perpendicular to the axis of the first through hole (311). The storage part comprises a storage tank (4) with a hollow structure and an open end, the storage tank (4) is provided with a sealing disc (41) for sealing the open end of the storage tank (4), and the sealing disc (41) is slidably and sealingly connected with the inner wall of the storage tank (4). The sealing disc (41) is provided with a second spring (42) on the side facing the open end of the storage tank (4), one end of the second spring (42) is fixedly connected with the sealing disc (41), the other end is fixedly connected with the open end of the storage tank (4), and the sealing disc (41) is in abutment with the inner wall of the storage tank (4) away from the open end in the natural extension state of the second spring (42). The storage tank (4) is provided with a heat-conducting pipe (43), one end of the heat-conducting pipe (43) is fixedly connected with and communicates with the bottom of the side wall of the storage tank (4), and the other end is embedded in the inside of the charging pile (7) and is in contact with the electronic components in the charging pile (7).

2. The fire extinguishing device of the new energy vehicle charging pile according to claim 1, characterized in that: The valve rod (3) is coaxially fixedly connected with a gear (33) in the middle part, the reaction tank (2) has a hollow structure with an open end, and the heat-absorbing expansion material is arranged on the side of the piston (21) away from the open end of the reaction tank (2). The piston (21) is provided with a rack (23) on the side facing the open end of the reaction tank (2), one end of the rack (23) is fixedly connected with the piston (21), and the other end protrudes out of the open end of the reaction tank (2) and is in engagement with the gear (33).

3. The fire extinguishing device of the new energy vehicle charging pile according to claim 2, characterized in that: The piston (21) is provided with a first spring (22) on the side facing the open end of the reaction tank (2), one end of the first spring (22) is fixedly connected with the piston (21), the other end is fixedly connected with the open end of the reaction tank (2), and the axis of the first through hole (311) is perpendicular to the axis of the conveying pipe (1) in the natural extension state of the first spring (22).

4. The fire extinguishing device of the new energy vehicle charging pile according to claim 1, characterized in that: The conveying pipe (1) is L-shaped with horizontal input end and vertical output end, a vertical branch pipe (11) is arranged in the middle of the conveying pipe (1), one end of the branch pipe (11) is fixedly connected with the conveying pipe (1) and communicates with each other, and the other end is fixedly connected with one end of the heat conducting pipe (43) and communicates with each other, the heat conducting pipe (43) is away from the storage tank (4); The storage tank (4) is provided with a power pump (5) outside, the input end of the power pump (5) is fixedly connected with the bottom end of the side wall of the storage tank (4) and communicates with each other, and the output end is fixedly connected with the input end of the conveying pipe (1) and communicates with each other.

5. The fire extinguishing device of the new energy vehicle charging pile according to claim 4, characterized in that: The second ball (32) is arranged in the branch pipe (11), the outer circular surface of the second ball (32) is attached to the inner wall of the branch pipe (11), and the second through hole (321) penetrating the second ball (32) is formed in the second ball (32); The valve rod (3) is inserted into the branch pipe (11) from the end away from the first ball (31) and is fixedly connected with the outer circular surface of the second ball (32), the axis of the valve rod (3) is perpendicular to the axis of the second through hole (321), and the axis of the second through hole (321) is perpendicular to the axis of the first through hole (311).

6. The fire extinguishing device of the new energy vehicle charging pile according to claim 1, characterized in that: The heat conducting pipe (43) is provided with a heat dissipation block (6) for dissipating heat on the heat conducting pipe (43), the heat dissipation block (6) is sleeved on the heat conducting pipe (43) and is fixedly connected, and the heat dissipation block (6) is arranged outside the charging pile (7).

7. The fire extinguishing device of the new energy vehicle charging pile according to claim 6, characterized in that: The heat dissipation block (6) is cylindrical, and a plurality of heat dissipation fins (61) are uniformly arranged on the outer circular surface of the heat dissipation block (6) in the circumferential direction; One side of the heat dissipation fin (61) is fixedly connected with the outer circular surface of the heat dissipation block (6), and the other side extends away from the heat dissipation block (6) in the radial direction of the heat dissipation block (6).

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