A fireproof and explosion-proof module for car charging piles

Abstract

This invention discloses a fireproof and explosion-proof module suitable for car charging piles, including a temperature sensing unit, an aerosol flame retardant material storage unit, and an aerosol spraying unit. The temperature sensing unit is led out from the housing of the fireproof and explosion-proof module and arranged in the flammable part. When the temperature sensing unit in the flammable part senses a fire, the aerosol flame retardant material in the aerosol flame retardant material storage unit is sprayed out through the aerosol spraying unit, thereby achieving the purpose of the invention to extinguish the fire by total flooding inside the charging pile.

Description

Technical Field

[0001] This invention belongs to the field of fire and explosion protection for charging piles. Background Technology

[0002] When a car is charging, both the charging station and the electric vehicle charging in front of it pose a risk of spontaneous combustion. Therefore, the charging device is generally equipped with a fireproof and explosion-proof unit that can spray an accelerant. When the temperature sensing unit located in the flammable part of the charging station exceeds the threshold, the aerosol flame retardant in the aerosol flame retardant storage unit is sprayed out through the aerosol spraying unit, thereby achieving the purpose of total flooding fire suppression inside the charging station. However, this single-function fire suppression mechanism cannot cover the situation where the electric vehicle charging in front of it spontaneously combusts. Summary of the Invention

[0003] Purpose of the invention: In order to overcome the shortcomings of the existing technology, the present invention provides a fire and explosion protection solution for charging piles. In addition to actively extinguishing fires inside the charging pile, it can also take into account the situation where an electric vehicle charging in front of the charging pile spontaneously combusts.

[0004] Technical solution: To achieve the above objectives, the present invention provides a fireproof and explosion-proof module for automobile charging piles, including a charging pile main unit housing, wherein a fireproof and explosion-proof module capable of spraying flame retardant is provided at the heat dissipation air inlet inside the charging pile main unit housing; and a temperature sensing unit is led out from the fireproof and explosion-proof module housing and arranged in various flammable parts.

[0005] The fireproof and explosion-proof module includes an aerosol flame-retardant material storage unit, a ventilation cover, and an aerosol spraying unit; the ventilation cover is fastened to the ventilation opening of the charging pile main unit box; the aerosol flame-retardant material storage unit is fixedly installed inside the charging pile main unit box, and the aerosol spraying unit is movably installed inside the ventilation cover.

[0006] Furthermore, the ventilation cover has a first row of air inlets distributed horizontally, and a second row of air inlets below the first row of air inlets.

[0007] Furthermore, the portion of the ventilation cover between the first and second air inlets is a section of outward-protruding semi-cylindrical wall.

[0008] The aerosol spraying unit includes a flame retardant distribution cylinder coaxially within the semi-cylindrical wall. A drive unit can drive the flame retardant distribution cylinder. Several semi-circular spray pipes are coaxially arranged outside the flame retardant distribution cylinder. The counterclockwise end of each semi-circular spray pipe extends from the first row of air inlets to the outside of the ventilation cover plate, and the counterclockwise end of the semi-circular spray pipe is provided with an outward spray nozzle. The clockwise end of each semi-circular spray pipe is inside the second row of air inlets and is fixedly connected to the flame retardant distribution cylinder through the distribution pipe.

[0009] Furthermore, the outer diameter of the semi-circular spray pipe is smaller than the inner diameter of the first and second row air inlets.

[0010] Furthermore, the flame retardant distribution chamber inside the flame retardant distribution tube is connected to the clockwise end of the injection channel inside the semi-circular injection pipe through the distribution channels in each distribution pipe; the counterclockwise end of the injection channel is connected to the injection port.

[0011] Furthermore, a first sealing ring is provided at the counterclockwise end of the semicircular spray pipe along its outer contour, and a second sealing ring is provided at the clockwise end of the semicircular spray pipe along its outer contour. The outer diameters of both the first and second sealing rings are larger than the inner diameters of the first and second air inlets. The side of the first sealing ring away from the semicircular spray pipe is the first sealing surface, and the side of the second sealing ring closer to the semicircular spray pipe is the second sealing surface.

[0012] Furthermore, when the flame retardant distribution tube rotates counterclockwise, each semi-circular injection pipe rotates counterclockwise along the axis. When each first sealing surface rotates counterclockwise with each semi-circular injection pipe to block the second row of air inlets, each second sealing surface rotates counterclockwise with each semi-circular injection pipe to just block the first row of air inlets. At this time, the injection port of each semi-circular injection pipe is connected to the inner cavity of the charging pile main unit box through the second row of air inlets.

[0013] Furthermore, an external toothed ring is fixedly provided on the outer contour of one end of the flame retardant distribution tube;

[0014] The drive unit includes a drive motor, and the output end of the drive motor is connected to an output gear, which meshes with an external gear ring.

[0015] Furthermore, the flame retardant outlet end of the aerosol flame retardant storage unit is connected to a flame retardant outlet pipe. The outer wall of the outlet end of the flame retardant outlet pipe slides in fit with the inner wall of one end of the flame retardant distribution cylinder through a sealed bearing, and the outlet end of the flame retardant outlet pipe is connected to the flame retardant distribution chamber inside the flame retardant distribution cylinder.

[0016] Beneficial effects: In addition to actively extinguishing fires inside the charging pile, the present invention can also take into account the situation where an electric vehicle charging in front of the charging pile spontaneously combusts.

[0017] In the first scenario: each nozzle sprays flame retardant jets diagonally downwards towards the front of the charging pile's main unit, thereby preventing the spread of fire from the "spontaneous combustion" of the car in front.

[0018] In the second scenario: the flame retardant sprayed from each nozzle spreads throughout the entire charging pile main unit box, and since the first and second air inlets are already closed, the purpose of total flooding fire suppression is achieved inside the charging pile main unit box. Attached Figure Description

[0019] Appendix Figure 1 This is a schematic diagram of the charging pile main unit casing;

[0020] Appendix Figure 2 A schematic diagram of the internal circulating fan of the charging pile main unit housing;

[0021] Appendix Figure 3 This is a first-person view diagram of the overall fireproof and explosion-proof module.

[0022] Appendix Figure 4 This is a second-view schematic diagram of the overall fireproof and explosion-proof module;

[0023] Appendix Figure 5 Side view of the fireproof and explosion-proof module;

[0024] Appendix Figure 6 For the appendix Figure 5 A sectional view from a specific perspective;

[0025] Appendix Figure 7 This is a first-person perspective sectional view of the fireproof and explosion-proof module.

[0026] Appendix Figure 8 This is a two-dimensional sectional view of the fireproof and explosion-proof module from a second perspective.

[0027] Appendix Figure 9 This is a diagram illustrating the fire extinguishing process. Detailed Implementation

[0028] The invention will now be further described with reference to the accompanying drawings.

[0029] As attached Figures 1 to 9 The image shows a fireproof and explosion-proof module suitable for car charging piles, such as... Figure 1 and 2 The system includes a charging pile main unit housing 5. A fireproof and explosion-proof module 100 capable of spraying carbon dioxide or aerosol flame retardant is installed at the heat dissipation air inlet inside the charging pile main unit housing 5. Temperature sensing units are led out from the fireproof and explosion-proof module housing and arranged in various flammable parts. The fireproof and explosion-proof module 100 includes an aerosol flame retardant storage unit 14, a ventilation cover 100, and an aerosol spraying unit. The ventilation cover 100 is fastened to the ventilation opening of the charging pile main unit housing 5 by bolts. Figure 5 The aerosol flame retardant storage unit 14 is fixedly installed inside the main unit housing 5 of the electric pile, and the aerosol spraying unit is movably installed inside the ventilation cover 100; the flame retardant in the aerosol flame retardant storage unit 14 can be sprayed out through the movable and adjustable aerosol spraying unit.

[0030] like Figure 1The ventilation cover 100 is provided with a first row of air inlets 2.1 arranged horizontally, and a second row of air inlets 2.2 are arranged horizontally below the first row of air inlets 2.1; an air outlet array 1 is provided on one side of the top of the charging pile main unit housing 5; such as Figure 2 The charging pile main unit housing 5 is equipped with a circulating fan 6 that can drive the air inside the charging pile main unit housing 5 to flow upward. Under the action of the circulating fan 6, the outside air enters the charging pile main unit housing 5 through the first row of air inlets 2.1 and the second row of air inlets 2.2, then rises inside the charging pile main unit housing 5, and finally is discharged through the air outlet array 1, thereby achieving the function of external circulation heat dissipation.

[0031] like Figure 6 The ventilation cover 100 is a section of outwardly protruding semi-cylindrical wall 101 between the first row of air inlets 2.1 and the second row of air inlets 2.2. The aerosol spraying unit includes a flame retardant diverter cylinder 16 coaxially within the semi-cylindrical wall 101. The drive unit can drive the flame retardant diverter cylinder 16. Several semi-circular spray pipes 9 are coaxially arranged outside the flame retardant diverter cylinder 16. The outer diameter of the semi-circular spray pipes 9 is smaller than the inner diameter of the first row of air inlets 2.1 and the second row of air inlets 2.2.

[0032] The counterclockwise end of each semicircular spray pipe 9 extends from the first row of air inlets 2.1 to the outside of the ventilation cover 100, and the counterclockwise end of the semicircular spray pipe 9 is provided with an outward-facing spray nozzle 7. Each spray nozzle 7 can spray flame retardant jets diagonally downwards towards the front of the charging pile main unit housing 5. The clockwise end of each semicircular spray pipe 9 is inside the second row of air inlets 2.2, such as... Figure 4 It is fixedly connected to the flame retardant distribution cylinder 16 through the distribution pipe 11.

[0033] like Figures 6 to 8As shown, the flame retardant distribution chamber 15 inside the flame retardant distribution cylinder 16 is connected to the clockwise end of the injection channel 17 inside the semi-circular injection pipe 9 through the distribution channel 18 in each distribution pipe 11; the counterclockwise end of the injection channel 17 is connected to the injection port 7; a first sealing ring 8 is provided along the outer contour of the counterclockwise end of the semi-circular injection pipe 9, and a second sealing ring 12 is provided along the outer contour of the clockwise end of the semi-circular injection pipe 9. The outer diameters of the first sealing ring 8 and the second sealing ring 12 are both larger than the inner diameters of the first row air inlet 2.1 and the second row air inlet 2.2; the side of the first sealing ring 8 away from the semi-circular injection pipe 9 The first sealing surface 8.1 and the second sealing ring 12 are located on the side closest to the semi-circular injection pipe 9, which is the second sealing surface 12.1. When the flame retardant diverter 16 rotates counterclockwise, each semi-circular injection pipe 9 rotates counterclockwise along the axis. When each first sealing surface 8.1 rotates counterclockwise with each semi-circular injection pipe 9 to block the second row of air inlets 2.2, each second sealing surface 12.1 rotates counterclockwise with each semi-circular injection pipe 9 to just block the first row of air inlets 2.1. At this time, the injection port 7 of each semi-circular injection pipe 9 is connected to the inner cavity of the charging pile main unit box 5 through the second row of air inlets 2.2.

[0034] The first sealing ring 8 and the second sealing ring 12 are made of flame-retardant material with a certain degree of elasticity to improve sealing performance.

[0035] A ring 111 is fixed to the inner side of the semi-cylindrical wall 101. The flame retardant distribution cylinder 16 is rotatably fitted into the opening 112 of the ring 111, thereby positioning the flame retardant distribution cylinder 16. An external gear ring 10 is fixedly provided on the outer contour of one end of the flame retardant distribution cylinder 16. The drive unit includes a drive motor 42. The output end of the drive motor 42 is driven and connected to an output gear 41. The output gear 41 meshes with the external gear ring 10, thereby driving the flame retardant distribution cylinder 16 to rotate along the axis. The drive motor 42 is fixedly connected to the aerosol flame retardant material storage unit 14 through a bracket 43. The flame retardant outlet end of the aerosol flame retardant material storage unit 14 is connected to a flame retardant outlet pipe 13. The outer wall of the outlet end of the flame retardant outlet pipe 13 slides with the inner wall of one end of the flame retardant distribution cylinder 16 through a sealed bearing 30, and the outlet end of the flame retardant outlet pipe 13 is connected to the flame retardant distribution chamber 15 inside the flame retardant distribution cylinder 16.

[0036] Working principle:

[0037] Under normal conditions: the counterclockwise ends of each semi-circular spray pipe 9 extend from the first row of air inlets 2.1 to the outside of the ventilation cover 100. Since the outer diameter of the semi-circular spray pipe 9 is smaller than the inner diameter of the first row of air inlets 2.1 and the second row of air inlets 2.2, under normal conditions, the first row of air inlets 2.1 and the second row of air inlets 2.2 on the ventilation cover 100 are both in an unobstructed state. Under the action of the circulating fan 6, the outside air enters the charging pile main unit box 5 through the first row of air inlets 2.1 and the second row of air inlets 2.2, then rises inside the charging pile main unit box 5, and is finally discharged through the air outlet array 1, thereby continuously dissipating the heat inside the charging pile box and achieving continuous external circulation heat dissipation.

[0038] In the first scenario: when the temperature detection device detects that an electric vehicle charging in front of the charging pile main unit box 5 is "spontaneously burning", it directly controls the flame retardant in the aerosol flame retardant storage unit 14 to be pressed into the flame retardant distribution chamber 15 in the form of high pressure through the flame retardant outlet pipe 13. Then, the high-pressure flame retardant in the flame retardant distribution chamber 15 is distributed to each semi-circular spray pipe 9 through several distribution pipes 11, and finally sprayed diagonally downwards in front of the charging pile main unit box 5 through each spray port 7, thereby preventing the fire of the "spontaneously burning" car in front from spreading.

[0039] In the second scenario, when the temperature detection device detects a fire or excessively high temperature inside the charging pile main unit housing 5, it first controls the drive motor 42, which then drives the flame retardant distribution cylinder 16 to rotate counterclockwise along the axis under meshing transmission. Each semi-circular spray pipe 9 rotates counterclockwise along the axis. When each first sealing surface 8.1 rotates counterclockwise with each semi-circular spray pipe 9 to block the second row of air inlets 2.2, each second sealing surface 12.1 rotates counterclockwise with each semi-circular spray pipe 9 to just block the first row of air inlets 2.1. At this time, the spray nozzles 7 of each semi-circular spray pipe 9 connect to the inner cavity of the charging pile main unit housing 5 through the second row of air inlets 2.2. At this point, the drive motor 42 is paused. Since both the first row of air inlets 2.1 and the second row of air inlets 2.2 are now closed, the external... The path of oxygen entering the charging pile main unit housing 5 is cut off, thereby controlling the intensification of the fire. Subsequently, the flame retardant in the aerosol flame retardant storage unit 14 is pressurized into the flame retardant distribution chamber 15 through the flame retardant outlet pipe 13 in the form of high pressure. Then, the high-pressure flame retardant in the flame retardant distribution chamber 15 is diverted to each semi-circular spray pipe 9 through several diversion pipes 11, and finally sprayed out through each spray nozzle 7. Since each spray nozzle 7 is connected to the inner cavity of the charging pile main unit housing 5 through the second row of air inlets 2.2, the flame retardant sprayed from each spray nozzle 7 spreads throughout the entire charging pile main unit housing 5. Since the first row of air inlets 2.1 and the second row of air inlets 2.2 are both in a closed state, the purpose of total flooding fire suppression inside the charging pile main unit housing 5 is achieved.

[0040] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A fireproof and explosion-proof module suitable for car charging piles, characterized in that: The system includes a charging pile main unit housing (5), and a fireproof and explosion-proof module (100) capable of spraying flame retardant is provided at the heat dissipation air inlet inside the charging pile main unit housing (5); the fireproof and explosion-proof module (100) includes an aerosol flame retardant material storage unit (14), a ventilation cover (100) and an aerosol spraying unit; the ventilation cover (100) is fastened to the ventilation opening of the charging pile main unit housing (5); the aerosol flame retardant material storage unit (14) is fixedly installed inside the charging pile main unit housing (5), and the aerosol spraying unit is movably installed inside the ventilation cover (100); The ventilation cover (100) has a first row of air inlets (2.1) distributed laterally, and a second row of air inlets (2.2) is located below the first row of air inlets (2.1); The portion of the ventilation cover (100) between the first row of air inlets (2.1) and the second row of air inlets (2.2) is a section of outwardly protruding semi-cylindrical wall (101); The aerosol spraying unit includes a flame retardant diversion cylinder (16) coaxially within the semi-cylindrical wall (101). The driving unit can drive the flame retardant diversion cylinder (16). A plurality of semi-circular spray pipes (9) are coaxially arranged outside the flame retardant diversion cylinder (16). The counterclockwise end of each semi-circular spray pipe (9) extends from the first row of air inlets (2.1) to the outside of the ventilation cover plate (100), and the counterclockwise end of the semi-circular spray pipe (9) is provided with an outward spray port (7). The clockwise end of each semi-circular spray pipe (9) is inside the second row of air inlets (2.2) and is fixedly connected to the flame retardant diversion cylinder (16) through a diversion pipe (11). The outer diameter of the semi-circular spray pipe (9) is smaller than the inner diameter of the first row of air inlets (2.1) and the second row of air inlets (2.2); The counterclockwise end of the semicircular spray pipe (9) is provided with a first sealing ring disc (8) along its outer contour, and the clockwise end of the semicircular spray pipe (9) is provided with a second sealing ring disc (12) along its outer contour. The outer diameters of the first sealing ring disc (8) and the second sealing ring disc (12) are both larger than the inner diameters of the first row of air inlets (2.1) and the second row of air inlets (2.2). The side of the first sealing ring disc (8) away from the semicircular spray pipe (9) is the first sealing surface (8.1), and the side of the second sealing ring disc (12) close to the semicircular spray pipe (9) is the second sealing surface (12.1). When the flame retardant diverter (16) rotates counterclockwise, each semi-circular spray pipe (9) rotates counterclockwise along the axis. When each first sealing surface (8.1) rotates counterclockwise with each semi-circular spray pipe (9) to block the second row of air inlets (2.2), each second sealing surface (12.1) rotates counterclockwise with each semi-circular spray pipe (9) to just block the first row of air inlets (2.1). At this time, the spray nozzle (7) of each semi-circular spray pipe (9) is connected to the inner cavity of the charging pile main unit box (5) through the second row of air inlets (2.2).

2. The fireproof and explosion-proof module for car charging piles according to claim 1, characterized in that: The flame retardant distribution chamber (15) in the flame retardant distribution cylinder (16) is connected to the clockwise end of the injection channel (17) in the semi-circular injection pipe (9) through the distribution channel (18) in each distribution pipe (11); the counterclockwise end of the injection channel (17) is connected to the injection port (7).

3. A fireproof and explosion-proof module for car charging piles according to claim 2, characterized in that: An external toothed ring (10) is fixedly provided on the outer contour of one end of the flame retardant distribution tube (16); The drive unit includes a drive motor (42), the output end of which is connected to an output gear (41), which meshes with the external gear ring (10).

4. A fireproof and explosion-proof module for car charging piles according to claim 3, characterized in that: The flame retardant outlet end of the aerosol flame retardant storage unit (14) is connected to a flame retardant outlet pipe (13). The outer wall of the outlet end of the flame retardant outlet pipe (13) is slidably engaged with the inner wall of one end of the flame retardant distribution cylinder (16) through a sealed bearing (30), and the outlet end of the flame retardant outlet pipe (13) is connected to the flame retardant distribution chamber (15) inside the flame retardant distribution cylinder (16).

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