Fire extinguishing spray head of battery pack

Abstract

The utility model discloses a fire extinguishing spray head of a battery pack, which belongs to the technical field of new energy battery pack protection and comprises a body, one end of the body is rotatably connected with a bent pipe, one end of the bent pipe far away from the body is provided with a spray head, a nozzle opening of the spray head and a runner hole of the body are arranged in a non-concentric manner, and a rotational flow piece is arranged between the spray head and the bent pipe. And a valve core is arranged between the bent pipe and the body. Due to the adoption of the elbow design that the nozzle opening position of the spray head is not concentric with the runner hole of the body, the variability of the nozzle opening position is realized, so that sheltering objects are avoided, the fire extinguishing spraying range is expanded, and the fire extinguishing capacity is improved.

Description

A fire extinguishing nozzle for a battery pack Technical Field

[0001] This utility model relates to the technical field of protection for new energy battery packs, and in particular to a fire extinguishing nozzle for a battery pack. Background Technology

[0002] Battery packs are prone to thermal runaway when overcharged, short-circuited, or mechanically damaged. The internal chemical reactions release a large amount of heat and flammable gases (such as H2 and CO), causing the fire to spread rapidly and posing an explosion risk. Fires involving lithium battery packs are characterized by sustained high-temperature combustion (up to 1200℃), strong re-ignition capability (due to continuous heat generation from internal chemical reactions), and electrolyte toxicity.

[0003] Therefore, the fire extinguishing sprinklers in battery packs are an important safety device in energy storage fire protection systems. They are typically installed on the top or side of the battery pack. When the internal temperature and pressure of the battery pack reach a certain value, the fire extinguishing sprinklers automatically activate, rapidly spraying the extinguishing agent into the battery pack. The function of the fire extinguishing sprinklers is to extinguish fires inside the battery pack promptly and effectively. Commonly used extinguishing agents in energy storage fire protection systems include gases, liquids, and dry powders.

[0004] Regarding the aforementioned technologies, the applicant discovered that traditional fire extinguishing nozzles use a concentric design between the flow channel hole of the nozzle body and the nozzle opening. When installed for fire extinguishing, if there is an obstruction in front, the nozzle cannot effectively spray the entire battery pack, thus affecting the fire extinguishing function. Summary of the Invention

[0005] This utility model addresses the shortcomings of existing technologies by providing a fire extinguishing nozzle for a battery pack. It employs a curved tube design where the nozzle orifice is not concentric with the flow channel hole of the main body, thereby achieving variability in the nozzle orifice position, avoiding obstructions, expanding the fire extinguishing spray range, and improving fire extinguishing capability.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0007] A fire extinguishing nozzle for a battery pack includes a body, one end of which is rotatably connected to a bend, and a nozzle is provided at the end of the bend away from the body. The nozzle orifice of the nozzle and the flow channel hole of the body are not concentrically arranged. A swirling element is provided between the nozzle and the bend, and a valve core is provided between the bend and the body.

[0008] Furthermore, the outer side wall of the bent pipe is provided with directional protrusions, and the inner side wall of the body is provided with directional grooves. The directional protrusions are placed inside the directional grooves, and the shapes of the directional protrusions and the directional grooves are adapted to each other.

[0009] Furthermore, a sealing ring is provided on the side of the nozzle near the bend, and a sealing ring groove is provided on the outer wall of the nozzle, with the sealing ring placed inside the sealing ring groove.

[0010] Furthermore, a second sealing ring is provided on the side of the bent pipe near the main body, and a second sealing ring groove is provided on the inner wall of the main body, with the second sealing ring placed in the second sealing ring groove.

[0011] Furthermore, a spring is provided at one end of the valve core near the bend, and a sealing ring is provided at the other end of the valve core near the body. The spring, valve core, and sealing ring together form a one-way valve structure.

[0012] Furthermore, a sealing ring groove 3 is provided on the outer wall of the valve core near the body, and the sealing ring 3 is placed in the sealing ring groove 3.

[0013] Furthermore, a sealing gasket is provided on the side of the body near the bend.

[0014] Furthermore, the main body is threaded with mounting screws, which pass through the main body and the sealing gasket in sequence.

[0015] Furthermore, the main body is provided with a fixing hole, and a fixing screw is provided in the fixing hole. A fixing groove is provided on the outer wall of the bent tube. The fixing screw passes through the main body and is placed in the fixing groove. The fixing screw is set to abut against the bent tube.

[0016] In summary, compared with the prior art, the beneficial effects of the above technical solution are:

[0017] (1) This application adopts a bend design in which the nozzle orifice position of the nozzle is not concentric with the flow channel hole of the body, so as to realize the variability of the nozzle orifice position, thereby avoiding obstructions, expanding the fire extinguishing spray range, and improving the fire extinguishing capability.

[0018] (2) The directional protrusions provided on the bend and the directional grooves provided on the body of this application ensure the fixation of the bend direction;

[0019] (3) The fixing groove provided in this application for the bent pipe is fixed in the fixing groove by the set screw, so as to realize the quick fixing of the bent pipe and simplify the installation steps;

[0020] (4) This application prevents internal gas or liquid from flowing out in reverse by providing a one-way valve structure between the body and the bend.

[0021] (5) This application is equipped with a swirl element to improve the atomization effect of the nozzle. Attached Figure Description

[0022] Figure 1 is a schematic diagram of the overall assembly of an embodiment of this utility model;

[0023] Figure 2 is an exploded view of the components in an embodiment of this utility model;

[0024] Figure 3 is a schematic diagram of the bent pipe in an embodiment of this utility model;

[0025] Figure 4 is a schematic diagram of the structure of the main body in an embodiment of this utility model.

[0026] Explanation of reference numerals in the attached drawings: 1. Nozzle; 1111. Sealing groove one; 2. Sealing ring one; 3. Swirl component; 4. Bend; 41. Orientation protrusion; 42. Fixing groove; 5. Sealing ring two; 6. Spring; 7. Valve core; 71. Sealing groove three; 8. Sealing ring three; 9. Sealing gasket; 10. Set screw; 11. Body; 111. Orientation groove; 112. Sealing groove two; 113. Set fixing hole; 12. Mounting screw. Detailed Implementation

[0027] The principles and features of this utility model are described below with reference to all the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0028] This utility model discloses a fire extinguishing nozzle for a battery pack.

[0029] Referring to Figures 1 and 2, a fire extinguishing nozzle for a battery pack includes a body 11, which is fixed to the battery pack and connected to an external pipeline. A bend 4 is rotatably connected to one end of the body 11, and the bend 4 is used to deliver the fire extinguishing medium. A nozzle 1 is provided at the end of the bend 4 away from the body 11. The nozzle 1 is threaded onto the bend 4 and is used to spray the fire extinguishing medium onto the battery pack. This application achieves a waterproof and dustproof rating of IP68 for the nozzle 1.

[0030] Referring to Figures 1 and 2, the nozzle orifice of the nozzle 1 is non-concentric with the flow channel hole of the body 11. A swirling element 3 is provided between the nozzle 1 and the bend 4. The swirling element 3 is assembled inside the nozzle 1 and is used to realize the swirling of the extinguishing medium, improve the atomization ability of the extinguishing medium, and also improve the atomization effect of the nozzle 1. A valve core 7 is provided between the bend 4 and the body 11. By setting the bend 4, the spray position and direction of the nozzle 1 are changed, avoiding obstructions inside the battery pack, increasing the spray range of the extinguishing medium, and improving the extinguishing ability.

[0031] Referring to Figures 2, 3, and 4, the bending pipe 4 can be processed by bending the steel pipe, integral mold opening, segmented mold opening followed by welding, threaded connection, etc. The outer wall of the bending pipe 4 is provided with directional protrusions 41, and the inner wall of the body 11 is provided with directional grooves 111. The directional protrusions 41 are placed inside the directional grooves 111, and the shapes of the directional protrusions 41 and directional grooves 111 are mutually adapted. The directional protrusions 41 are engaged in the directional grooves 111, ensuring that the direction of the bending pipe 4 is fixed, simplifying installation, and achieving directional positioning.

[0032] Referring to Figures 2, 3, and 4, a fixing hole 113 is provided on the main body 11, and a fixing screw 10 is provided in the fixing hole 113. A fixing groove 42 is provided on the outer wall of the bend 4. The fixing screw 10 passes through the main body 11 and is placed in the fixing groove 42, with the fixing screw 10 abutting against the bend 4. The fixing screw 10 is screwed into the fixing hole 113 until it reaches the surface of the fixing groove 42. The fixing screw 10 is used to fix the bend 4 and prevent the bend 4 from falling off during the discharge of the extinguishing medium.

[0033] Referring to Figure 2, a sealing ring 2 is provided on the side of the nozzle 1 near the bend 4. A sealing ring groove 1111 is provided on the outer wall of the nozzle 1. The sealing ring 2 is placed in the sealing ring groove 1111. The sealing ring 2 is used to seal the nozzle 1. The sealing ring 2 is assembled at the position of the sealing ring groove 1111 of the nozzle 1.

[0034] Referring to Figures 2, 3, and 4, a second sealing ring 5 is provided on the side of the bend 4 near the body 11. A second sealing ring groove 112 is formed on the inner wall of the body 11, and the second sealing ring 5 is placed in the second sealing ring groove 112. The second sealing ring 5 is used to seal the bend 4, and the second sealing ring 5 is assembled at the position of the second sealing ring groove 112.

[0035] Referring to Figure 2, a spring 6 is provided at the end of the valve core 7 near the bend 4, and a sealing ring 8 is provided at the end of the valve core 7 near the body 11. The spring 6, valve core 7, and sealing ring 8 form a one-way valve structure. A sealing ring groove 71 is formed on the outer wall of the end of the valve core 7 near the body 11, and the sealing ring 8 is placed in the sealing ring groove 71. The spring 6, together with the valve core 7 and the sealing ring 8, forms a one-way valve structure to achieve reverse sealing and has a certain opening pressure value. The sealing ring 8 is assembled at the position of the sealing ring groove 71 of the valve core 7. The spring 6, valve core 7, and sealing ring 8 are all assembled between the bend 4 and the body 11. By setting up a one-way valve structure internally, it prevents the internal gas or liquid from flowing out in reverse and avoids the internal extinguishing agent from flowing back.

[0036] Referring to Figure 2, a sealing gasket 9 is provided on the side of the body 11 near the bend 4. The sealing gasket 9 is used to seal the body 11 and the battery pack.

[0037] Referring to Figure 2, a mounting screw 12 is threaded onto the body 11, and the mounting screw 12 passes through the body 11 and the sealing gasket 9 in sequence. The mounting screw 12 is used to install and fix the body 11.

[0038] The implementation principle of the fire extinguishing nozzle of the battery pack in this embodiment of the utility model is as follows:

[0039] As the extinguishing medium sequentially travels through the external pipeline, body 11, and bend 4 to the nozzle 1, when it reaches the valve core 7, if the pressure exceeds the valve core 7's opening pressure, the valve core 7 opens. The extinguishing medium then travels through the bend 4 to the swirl element 3, improving atomization, and is then sprayed onto the target battery pack through the nozzle 1. After spraying, the valve core 7 resets to prevent the extinguishing agent inside the battery pack from flowing back out.

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fire extinguishing nozzle for a battery pack, comprising a body (11), characterized in that: One end of the main body (11) is rotatably connected to a bend (4). The end of the bend (4) away from the main body (11) is provided with a nozzle (1). The nozzle orifice of the nozzle (1) is not concentric with the flow channel hole of the main body (11). A swirl element (3) is provided between the nozzle (1) and the bend (4). A valve core (7) is provided between the bend (4) and the main body (11).

2. The fire extinguishing nozzle for a battery pack according to claim 1, characterized in that: The outer side wall of the bend (4) is provided with a directional protrusion (41), and the inner side wall of the body (11) is provided with a directional groove (111). The directional protrusion (41) is placed inside the directional groove (111), and the shapes of the directional protrusion (41) and the directional groove (111) are adapted to each other.

3. The fire extinguishing nozzle for a battery pack according to claim 1, characterized in that: The nozzle (1) has a sealing ring (2) on the side near the bend (4), and a sealing ring groove (1111) is opened on the outer wall of the nozzle (1), with the sealing ring (2) placed in the sealing ring groove (1111).

4. The fire extinguishing nozzle for a battery pack according to claim 1, characterized in that: The curved pipe (4) has a sealing ring two (5) on the side close to the body (11), and a sealing ring groove two (112) is opened on the inner side wall of the body (11), with the sealing ring two (5) placed in the sealing ring groove two (112).

5. A fire extinguishing nozzle for a battery pack according to claim 1, characterized in that: The valve core (7) is provided with a spring (6) at one end near the bend (4), and a sealing ring (8) is provided at the other end near the body (11). The spring (6), valve core (7) and sealing ring (8) together form a one-way valve structure.

6. A fire extinguishing nozzle for a battery pack according to claim 5, characterized in that: The valve core (7) has a sealing ring groove (71) on the outer side wall near the body (11), and the sealing ring (8) is placed in the sealing ring groove (71).

7. A fire extinguishing nozzle for a battery pack according to claim 1, characterized in that: The main body (11) is provided with a sealing gasket (9) on the side near the bend (4).

8. A fire extinguishing nozzle for a battery pack according to claim 7, characterized in that: The main body (11) is threaded with mounting screws (12), which pass through the main body (11) and the sealing gasket (9) in sequence.

9. A fire extinguishing nozzle for a battery pack according to claim 1, characterized in that: The main body (11) is provided with a fixing hole (113), and a fixing screw (10) is provided in the fixing hole (113). A fixing groove (42) is provided on the outer side wall of the bent tube (4). The fixing screw (10) passes through the main body (11) and is placed in the fixing groove (42). The fixing screw (10) is set to abut against the bent tube (4).

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