Self-discharging valve of battery compartment fire extinguishing system

Abstract

The utility model discloses a self-discharge valve of a battery compartment fire extinguishing system, which is mounted on a fire extinguishing agent conveying pipeline and comprises a valve body, a self-discharge piston and a reset piece, an upward through upper cavity is formed at the upper part in the valve body, a downward through lower cavity is formed at the lower part in the valve body, and an interlayer is arranged between the upper cavity and the lower cavity; the upper end of the upper cavity is cylindrical, and the lower end of the upper cavity is in an inverted conical cylinder shape; a positioning opening is formed in the center of the interlayer, and a plurality of through openings are formed in the edge of the interlayer at intervals; the self-discharging piston is provided with a piston head and a rod body integrally connected to the center of the bottom surface of the piston head, the rod body is sleeved with the reset piece, and the two ends of the reset piece abut against the bottom surface of the piston head and the top surface of the interlayer respectively; the bottom of the rod body penetrates out of the positioning opening to the lower cavity, a positioning piece is arranged on the rod body in a penetrating mode, the reset piece provides driving force to act on the piston head, the piston head abuts against the upper end of the upper cavity, and a gap is formed between the piston head and the upper end of the upper cavity. According to the utility model, leaked liquid can be automatically discharged outwards.

Description

Technical Field

[0001] This utility model relates to the field of battery compartment fire protection system technology, and in particular to a self-draining valve for a battery compartment fire protection system. Background Technology

[0002] In recent years, with the continuous development of lithium battery technology, battery energy storage systems have become increasingly important in the power system. A battery energy storage system consists of multiple battery packs, and with the continuous construction and application of energy storage stations, the safety of energy storage systems is receiving increasing attention.

[0003] Currently, the fire protection system used in prefabricated containerized energy storage systems mainly uses detectors to detect battery packs and on / off valves to control the flow of chemicals. When a detector detects a fire signal, the on / off valves open based on the detected signal to spray chemicals onto the corresponding battery pack, battery cluster, or the entire battery compartment.

[0004] In non-fire conditions, the on / off valves of the fire protection system need to remain completely closed to prevent leaks or drips from affecting the battery energy storage system. However, in case of unforeseen circumstances where the on / off valves are not completely closed, the existing fire protection system lacks a structure to handle leaks or drips. Utility Model Content

[0005] The purpose of this utility model is to provide a self-draining valve for a battery compartment fire protection system.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A self-draining valve for a battery compartment fire suppression system, installed on a fire extinguishing agent delivery pipeline, includes a valve body, a self-draining piston, and a reset component. The valve body has an upper cavity extending upwards, a lower cavity extending downwards, and a partition between the upper and lower cavities. The upper end of the upper cavity is cylindrical, and the lower end is an inverted conical shape. The partition has a positioning port at its center and several openings spaced along its edges. The self-draining piston has a piston head and a rod integrally connected to the center of the bottom surface of the piston head. The reset component is sleeved on the rod, with its two ends abutting the bottom surface of the piston head and the top surface of the partition, respectively. The bottom of the rod extends from the positioning port into the lower cavity and has a positioning plate inserted thereon. In non-fire conditions, the reset component provides driving force to the piston head, pushing the piston head against the upper end of the upper cavity, forming a gap between the piston head and the upper end of the upper cavity, which communicates with the lower end of the upper cavity.

[0008] As a further technical solution of this utility model: a self-draining pipe is installed between the conveying pipeline and the valve body, and the self-draining pipe forms a discharge end for the valve body to be installed. The discharge end is inclined or vertical relative to the ground.

[0009] As a further technical solution of this utility model: the valve body has a connecting groove recessed on the top of its outer side.

[0010] As a further technical solution of this utility model: a first annular groove is recessed at the bottom of the connecting groove, and a first sealing ring is embedded in the first annular groove.

[0011] As a further technical solution of this utility model: the diameter of the piston head is smaller than the diameter of the upper end of the upper cavity, but larger than the diameter of the narrowest part of the lower end of the upper cavity.

[0012] As a further technical solution of this utility model: the piston head is recessed on its outer side with a second annular groove, and a second sealing ring is embedded in the second annular groove.

[0013] As a further technical solution of this utility model: the piston head is in the shape of an inverted cone.

[0014] As a further technical solution of this utility model: the lower cavity is cylindrical, and the diameter of the lower cavity is larger than the diameter of the upper end of the upper cavity.

[0015] As a further technical solution of this utility model: the reset component is a spring component.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model proposes a self-draining valve for a battery compartment fire protection system. Through the cooperation between the valve body, the self-draining piston, and the reset component, in a non-fire state, even if the valve is not completely closed, the leakage formed by seepage or dripping can be automatically discharged to the outside, avoiding the leakage from affecting the battery energy storage system. However, when a fire occurs and the extinguishing agent is being transported through the pipeline, the transport pressure of the extinguishing agent is greater than the driving force of the reset component, which presses the piston head against the lower end of the upper chamber to achieve a seal, thus not affecting the transport of the extinguishing agent. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the self-draining valve of the battery compartment fire suppression system.

[0018] Figure 2 This is a cross-sectional view of the self-draining valve of the battery compartment fire suppression system.

[0019] Figure 3 This is a top view of the valve body.

[0020] Figure 4 This is a partial reference diagram showing the operating status of the self-draining valve in the battery compartment fire suppression system. Detailed Implementation

[0021] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of protection of this utility model.

[0022] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 A self-draining valve for a battery compartment fire suppression system, installed on a fire extinguishing agent delivery pipeline, includes a valve body 10, a self-draining piston 20, and a reset component 30. The valve body 10 has an upper cavity 11 extending upwards in its upper part, a lower cavity 12 extending downwards in its lower part, and a partition 13 between the upper cavity 11 and the lower cavity 12. The upper end of the upper cavity 11 is cylindrical, and the lower end is an inverted conical shape. The partition 13 has a positioning port 131 at its center and several through-holes 132 spaced around the positioning port 131 along its edge, connecting the upper cavity 11 and the lower cavity 12 via the positioning port 131 and the through-holes 132. The self-draining piston 20 has a piston head 21 integrally connected to the piston. The piston head 21 has a rod 22 at the center of its bottom surface. The reset member 30 is sleeved on the rod 22. The two ends of the reset member 30 abut against the bottom surface of the piston head 21 and the top surface of the partition 13, respectively. The bottom of the rod 22 extends from the positioning port 131 into the lower cavity 12, and a positioning piece 23 is installed on it. In the absence of a fire, the reset member 30 provides a driving force to the piston head 21, pushing the piston head 21 against the upper end of the upper cavity 11. A gap is formed between the piston head 21 and the upper end of the upper cavity 11, which communicates with the lower end of the upper cavity 11. However, when a fire occurs and the extinguishing agent is transported through the pipeline, the transport pressure of the extinguishing agent is greater than the driving force of the reset member 30, pressing the piston head 21 against the lower end of the upper cavity 11 to achieve a seal.

[0023] Furthermore, in this embodiment, a self-draining pipe 40 can be installed between the delivery pipe and the valve body 10. The self-draining pipe 40 has a discharge end for the valve body 10 to install, and the discharge end is inclined or vertical relative to the ground to facilitate leakage discharge.

[0024] Furthermore, in this embodiment, the valve body 10 has a connecting groove 14 recessed on the top of its outer side for external connection; the bottom of the connecting groove 14 has a first annular groove 141 recessed, and a first sealing ring 142 is embedded in the first annular groove 141 to improve the sealing performance when connecting to the outside.

[0025] Furthermore, in this embodiment, the diameter of the piston head 21 is smaller than the diameter of the upper end of the upper cavity 11, but larger than the diameter of the narrowest part of the lower end of the upper cavity 11.

[0026] Furthermore, in this embodiment, the piston head 21 has a second annular groove 211 recessed on its outer side surface, and a second sealing ring 212 is embedded in the second annular groove 211 to improve the sealing performance when a fire occurs.

[0027] Furthermore, in this embodiment, the piston head 21 is in the shape of an inverted cone.

[0028] Furthermore, in this embodiment, the lower cavity 12 is cylindrical, and the diameter of the lower cavity 12 is larger than the diameter of the upper end of the upper cavity 11.

[0029] Furthermore, in this embodiment, the reset member 30 is a spring member.

[0030] Understandably, the method of using the self-draining valve of the battery compartment fire protection system of this utility model is as follows: In a non-fire state, the self-draining valve of the battery compartment fire protection system is installed on the delivery pipeline via a self-draining pipe 40. The reset member 30 provides driving force to the piston head 21, pushing the piston head 21 against the upper end of the upper chamber 11. A gap is reserved between the piston head 21 and the upper end of the upper chamber 11 to communicate with the lower end of the upper chamber 11, so that even if the on / off valve on the delivery pipeline is not completely closed, the leakage or dripping formed by it will be prevented. The leaking liquid can also flow into the valve body 10 from the self-draining pipe 40, and be discharged to the outside in sequence along the upper end of the upper cavity 11, the gap between the piston head 21 and the upper end of the upper cavity 11, the lower end of the upper cavity 11, the through port 132 and the lower cavity 12, thereby avoiding the leakage from affecting the battery energy storage system; when a fire occurs and the extinguishing agent is transported through the pipeline, the transport pressure of the extinguishing agent is greater than the driving force of the reset member 30, which presses the piston head 21 against the lower end of the upper cavity 11 to achieve a blockage, and will not affect the transport of the extinguishing agent.

[0031] In summary, the self-draining valve of the battery compartment fire protection system of this utility model, through the cooperation between the valve body 10, the self-draining piston 20 and the reset member 30, can automatically discharge any leakage or dripping liquid in non-fire conditions, even if the valve is not completely closed, thus preventing the leakage from affecting the battery energy storage system. However, in the event of a fire, when the extinguishing agent is being transported through the pipeline, the pressure of the extinguishing agent is greater than the driving force of the reset member 30, which presses the piston head 21 against the lower end of the upper chamber 11 to achieve a seal, thus not affecting the transport of the extinguishing agent.

[0032] Any combination of different embodiments of this utility model, provided it does not violate the inventive concept of this utility model, shall be considered as the disclosure of this utility model; any simple modifications to the technical solution and any combination of different embodiments within the scope of the inventive concept of this utility model, without violating the inventive concept of this utility model, shall be within the protection scope of this utility model.

Claims

1. A self-draining valve for a battery compartment fire suppression system, installed on a fire extinguishing agent delivery pipeline, characterized in that: The device includes a valve body (10), a self-draining piston (20), and a reset component (30). The valve body (10) has an upper cavity (11) extending upwards, a lower cavity (12) extending downwards, and a partition (13) between the upper cavity (11) and the lower cavity (12). The upper end of the upper cavity (11) is cylindrical, and the lower end is an inverted conical shape. The partition (13) has a positioning port (131) at its center and several through-holes (132) spaced along its edges. The self-draining piston (20) has a piston head (21) and a reset component (30) integrally connected to the piston head. 21) The rod (22) at the center of the bottom surface is fitted with the reset member (30). The two ends of the reset member (30) abut against the bottom surface of the piston head (21) and the top surface of the partition (13) respectively. The bottom of the rod (22) extends from the positioning port (131) into the lower cavity (12) and a positioning piece (23) is installed on it. In the non-fire state, the reset member (30) provides driving force to the piston head (21) and pushes the piston head (21) against the upper end of the upper cavity (11). A gap is formed between the piston head (21) and the upper end of the upper cavity (11) and the lower end of the upper cavity (11).

2. The self-draining valve of the battery compartment fire suppression system according to claim 1, characterized in that: A self-draining pipe (40) is installed between the conveying pipe and the valve body (10). The self-draining pipe (40) forms a discharge end for the valve body (10) to be installed. The discharge end is inclined or vertical relative to the ground.

3. The self-draining valve of the battery compartment fire suppression system according to claim 1, characterized in that: The valve body (10) has a connecting groove (14) recessed on the top of its outer side.

4. The self-draining valve of the battery compartment fire suppression system according to claim 3, characterized in that: The bottom of the connecting groove (14) is recessed with a first annular groove (141), and a first sealing ring (142) is embedded in the first annular groove (141).

5. The self-draining valve of the battery compartment fire suppression system according to claim 1, characterized in that: The diameter of the piston head (21) is smaller than the diameter of the upper end of the upper cavity (11) and larger than the diameter of the narrowest part of the lower end of the upper cavity (11).

6. The self-draining valve of the battery compartment fire suppression system according to claim 1, characterized in that: The piston head (21) has a second annular groove (211) recessed on its outer side surface, and a second sealing ring (212) is embedded in the second annular groove (211).

7. The self-draining valve of the battery compartment fire suppression system according to claim 1, characterized in that: The piston head (21) is in the shape of an inverted cone.

8. The self-draining valve of the battery compartment fire suppression system according to claim 1, characterized in that: The lower cavity (12) is cylindrical, and the diameter of the lower cavity (12) is larger than the diameter of the upper cavity (11) at the top.

9. The self-draining valve of the battery compartment fire suppression system according to claim 1, characterized in that: The reset component (30) is a spring component.

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