A detection, activation and pressure relief integrated fire extinguishing device and its installation and fire extinguishing method

Abstract

The present invention discloses a detection, start-up and pressure relief integrated fire extinguishing device and an installation and fire extinguishing method, comprising a shell, wherein a fire extinguishing agent is provided in the shell, a nozzle is provided at the front end of the shell, the end face of the fire extinguishing agent is in contact with an ignition head, a start line of the ignition head passes through the front end of the shell and is connected to the output end of a piezoelectric ceramic, the piezoelectric ceramic is installed in a pressure relief groove at the front end of the shell, and a detection knocking device is provided above the piezoelectric ceramic; the present invention integrates the detection, start-up and pressure relief functions into a smaller area by arranging an installation cylinder, piezoelectric ceramics and a detection knocking device in the area where the pressure relief groove is located, and has a streamlined structure, sensitive detection and safe start-up.

Description

Technical Field

[0001] The present invention relates to the field of fire fighting technology, and in particular to a detection, activation and pressure relief integrated fire extinguishing device and an installation and fire extinguishing method. Background Art

[0002] At present, with the continuous development of the energy storage industry, energy storage stations and energy storage battery boxes are also constantly iterating and updating. From a general perspective, it is not difficult to see that the interior of current energy storage stations and battery packs is becoming more and more compact. Traditional fire extinguishing devices installed inside energy storage stations or battery packs often require the addition of special detection devices.

[0003] Some aerosol fire extinguishing devices use thermal wires as detection and activation structures, which can avoid the need for additional electronic detection equipment. However, thermal wires themselves are dangerous and environmentally polluting, so a corresponding activation mechanism is needed to solve this problem.

[0004] Aerosol fire extinguishing devices mainly extinguish fires by generating a large amount of gas and aerosol fire extinguishing substances after the aerosol generator is activated. The speed of generating gas and fire extinguishing substances depends on the activation area of ​​the aerosol generator. However, as the volume of the fire extinguishing device continues to decrease, the internal pressure of the aerosol fire extinguishing device also increases. In this environment, the activation area of ​​the aerosol generator will change due to the high pressure, causing a sudden increase in the internal pressure of the fire extinguishing device. Therefore, it is also necessary to design a pressure relief device to solve this problem.

[0005] In addition, the existing aerosol fire extinguishing devices, such as CN2023200802967 - a fire extinguishing device with a start protector, have their starting components installed at the rear end of the shell. Therefore, when installing the ignition head, the starting wire of the ignition head needs to be passed along the fire extinguishing agent to the rear end of the shell before the starting component can be connected. This installation method makes the starting wire threading process complicated, time-consuming and labor-intensive, and affects the production efficiency of the fire extinguishing device. Summary of the Invention

[0006] The purpose of the present invention is to overcome the above-mentioned shortcomings and provide a detection-activated pressure relief integrated fire extinguishing device and an installation and fire extinguishing method to solve the problems raised in the background technology.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solution: a detection-starting and pressure-relief integrated fire extinguishing device, comprising a shell, a fire extinguishing agent is provided in the shell, a nozzle is opened at the front end of the shell, the end face of the fire extinguishing agent is in contact with the ignition head, the starting line of the ignition head passes through the front end of the shell and is connected to the output end of the piezoelectric ceramic, the piezoelectric ceramic is installed in the pressure relief groove at the front end of the shell, and a detection knocking device is provided above the piezoelectric ceramic.

[0008] Preferably, the detection and knocking device cooperates with the pressure relief groove through the installation cylinder, the outer side of the installation cylinder contacts the inner side of the pressure relief groove, and a piezoelectric ceramic is arranged below the inner side of the installation cylinder.

[0009] Preferably, the detection knocking device includes a strike rod arranged above the inner side of the mounting cylinder, the upper side of the strike rod slidingly cooperates with the top of the mounting cylinder, a fusible part in contact with the top of the mounting cylinder is horizontally passed through the strike rod, a limiting strike disk is provided at the bottom of the strike rod, a compression spring is provided between the upper surface of the strike disk and the top of the mounting cylinder, and the compression spring is passed through the surface of the strike rod.

[0010] Preferably, the lower surface of the impact disk contacts a safety pin, and the safety pin is transversely arranged through the side of the mounting cylinder.

[0011] Preferably, the fusible component is a bismuth-tin low-melting-point alloy; the ignition head is a bridgeless ignition head, which is embedded in an ignition powder bag, and the ignition powder bag is provided with aerosol generating agent powder.

[0012] Preferably, a coolant is further provided between the top surface of the fire extinguishing agent and the nozzle; the fire extinguishing agent is an aerosol generating agent powder or a powder column structure formed by pressing the aerosol generating agent powder.

[0013] Preferably, a partition net is provided on both the upper and lower sides of the coolant, and a support is provided between the bottom of the partition net on the lower side and the top surface of the fire extinguishing agent.

[0014] Preferably, the front end of the shell is threadedly matched with the front cover, a nozzle and a pressure relief groove are provided on the front cover, a step for limiting the piezoelectric ceramics is also provided in the pressure relief groove, and a diaphragm is provided on the surface of the nozzle.

[0015] In addition, the present invention also discloses a method for installing the aforementioned fire extinguishing device with integrated detection, activation and pressure relief, which comprises the following steps:

[0016] S1: Open the front cover of the shell, load the fire extinguishing agent into the shell, then install the ignition head on the top surface of the fire extinguishing agent, pull the starting line upwards, and then set the coolant on the top of the fire extinguishing agent;

[0017] S2: Pass the upper end of the starter wire upward from the pressure relief groove of the front cover and connect it to the output end of the piezoelectric ceramic installed in the pressure relief groove;

[0018] S3: Install and fix the front cover to the front end of the shell, insert the installation cylinder into the gap between the outer surface of the piezoelectric ceramic and the inner surface of the pressure relief groove, and then install the detection and knocking device on the upper side of the installation cylinder.

[0019] The present invention discloses a fire extinguishing method of the above-mentioned detection, activation and pressure relief integrated fire extinguishing device, which comprises the following steps:

[0020] S1: Before the fire extinguishing device is put into use, remove the safety pin first to put the detection and knocking device into the ready state;

[0021] S2: When a fire occurs, the fusible element melts due to the heat, thereby releasing the limiting effect on the striker rod. Under the action of the compression spring force, the striker rod moves downward and drives the striker disc to strike the piezoelectric ceramic;

[0022] S3: The piezoelectric ceramic is activated by the impact and generates an induced current, which is transmitted to the ignition head through the starting wire to make it work, thereby igniting the fire extinguishing agent;

[0023] S4: The fire extinguishing agent burns to produce fire extinguishing material, which then passes through the coolant and is ejected from the nozzle position to carry out the fire extinguishing process.

[0024] Beneficial effects of the present invention:

[0025] The present invention integrates the detection, starting and pressure relief functions into a smaller area by arranging an installation cylinder, piezoelectric ceramics and a detection knocking device in the area where the pressure relief groove is located. The structure is simple, the detection is sensitive and the starting is safe. In the case of an abnormal pressure surge, the piezoelectric ceramics and the installation cylinder can be ejected in time to expose the pressure relief groove, thereby realizing the pressure relief process. Moreover, during the installation process, the upper end of the starting line passes upward from the pressure relief groove of the front cover and is connected to the output end of the piezoelectric ceramic installed in the pressure relief groove. The starting line threading process is simple. At the same time, the starting line of the present invention also serves as a protective line during the pressure relief process to prevent the piezoelectric ceramics and the installation cylinder from being ejected and causing safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a structural diagram of a detection-activated pressure-relief integrated fire extinguishing device;

[0027] Figure 2 for Figure 1 Schematic diagram of the enlarged structure of the area where the tapping detection device is located. DETAILED DESCRIPTION

[0028] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0029] like Figure 1 and 2 As shown, a detection-activated pressure-relief integrated fire extinguishing device includes a shell 1, in which a fire extinguishing agent 2 is provided. A nozzle 3 is provided at the front end of the shell 1, and the end face of the fire extinguishing agent 2 contacts an ignition head 4. A starting wire 4.1 of the ignition head 4 passes through the front end of the shell 1 and is connected to the output end of a piezoelectric ceramic 5. The piezoelectric ceramic 5 is installed in a pressure relief groove 6 at the front end of the shell 1, and a detection knocking device 7 is provided above the piezoelectric ceramic 5.

[0030] Preferably, the detection and knocking device 7 is coupled to the pressure relief groove 6 via a mounting cylinder 8, with the outer side of the mounting cylinder 8 in contact with the inner side of the pressure relief groove 6, and a piezoelectric ceramic 5 is disposed below the inner side of the mounting cylinder 8. In this embodiment, the mounting cylinder 8 serves three purposes: first, it facilitates the installation of the detection and knocking device 7 within the pressure relief groove 6; second, it facilitates the positioning of the piezoelectric ceramic 5; and third, it facilitates the separation of the piezoelectric ceramic 5 and the mounting cylinder 8 from the pressure relief groove 6 during the pressure relief process, thereby exposing the pressure relief channel.

[0031] Preferably, the detection knocking device 7 includes a striking rod 7.1 arranged on the upper inner side of the mounting cylinder 8, the upper side of the striking rod 7.1 is slidably engaged with the top of the mounting cylinder 8, a fusible part 7.2 is horizontally passed through the striking rod 7.1 and contacts the top of the mounting cylinder 8, a limiting striking disk 7.3 is provided at the bottom of the striking rod 7.1, a compression spring 7.4 is provided between the upper surface of the striking disk 7.3 and the top of the mounting cylinder 8, and the compression spring 7.4 is passed through the surface of the striking rod 7.1.

[0032] Preferably, the lower surface of the impact disk 7.3 contacts the safety pin 7.5, and the safety pin 7.5 is transversely arranged on the side of the installation cylinder 8.

[0033] In the above technical solution, before the fire extinguishing device is put into use, the safety pin 7.5 is first removed, so that the detection knocking device 7 is in a ready-to-be-activated state; during the startup process, when a fire occurs, the fusible element 7.2 is heated and melted, thereby releasing the limiting effect on the impact rod 7.1. Under the action of the elastic force of the compression spring 7.4, the impact rod 7.1 moves downward and drives the impact disk 7.3 to impact the piezoelectric ceramic 5; after being impacted, the piezoelectric ceramic 5 is activated and generates an induced current, which is transmitted to the ignition head 4 through the starting line 4.1 to make it work, thereby igniting the fire extinguishing agent 2, completing the entire startup process.

[0034] Preferably, the fusible element 7.2 is a bismuth-tin low-melting-point alloy; the ignition head 4 is a bridgeless ignition head, embedded within an ignition powder bag 12 containing an aerosol generating agent powder. In this embodiment, the fusible element 7.2 is a bismuth-tin low-melting-point alloy with a melting point of approximately 70-150°C. When a fire occurs, it easily melts, acting as a fire detector. The ignition head 4 is a bridgeless ignition head. Because a certain gap is left between the two ignition wires of a bridgeless ignition head, arcing occurs after a certain current (or induced current) is applied, activating the contacting ignition agent. In this embodiment, the ignition powder bag 12 serves as the ignition agent, embedding the ignition head 4 therein. Upon activation, the ignition head 4 ignites the aerosol generating agent within the ignition powder bag 12, thereby rapidly generating heat and igniting the nearby fire extinguishing agent 2, greatly increasing the probability of successful ignition of the ignition head 4.

[0035] Preferably, a coolant 9 is provided between the top surface of the fire extinguishing agent 2 and the nozzle 3. The fire extinguishing agent 2 is an aerosol generating agent powder or a compressed charge structure formed by pressing the aerosol generating agent powder. The coolant 9 cools the high-temperature fire extinguishing material generated by the ignition of the fire extinguishing agent 2, preventing the temperature of the fire extinguishing agent from being too high when ejected from the nozzle 3. In this embodiment, the fire extinguishing agent 2 is an aerosol generating agent and can be used in two forms: a powdered form that burns more vigorously and produces gas at a rapid rate, and a compressed charge structure that burns more steadily and produces gas at a steady rate. In actual production, the preferred form can be selected based on actual conditions.

[0036] Preferably, screens 10 are provided on both the upper and lower sides of the coolant 9, with a support member 11 positioned between the bottom of the lower screen 10 and the top surface of the fire extinguishing agent 2. In this embodiment, the coolant 9 is granular, so the upper and lower screens 10 act as position limiters. In this embodiment, the screens 10 are not fixedly connected to the inner wall of the housing 1, but rather maintain contact with the inner wall. Furthermore, the support member 11 prevents the lower screen 10 from directly pressing against the area where the ignition head 4 is located, thereby preventing it from affecting the ignition process and causing ignition failure.

[0037] Preferably, the front end of the housing 1 is threadedly engaged with the front cover 1.1, and the front cover 1.1 is provided with a nozzle 3 and a pressure relief groove 6. The pressure relief groove 6 is also provided with a step for limiting the position of the piezoelectric ceramic 5. A diaphragm is provided on the surface of the nozzle 3. The provision of the step in the pressure relief groove 6 facilitates the installation process of the piezoelectric ceramic 5, and the top surface of the step also limits the bottom of the installation cylinder 8. The provision of the diaphragm on the surface of the nozzle 3 can prevent moisture in the air from entering the housing 1 through the nozzle 3 during normal storage and transportation of the fire extinguishing device, causing the fire extinguishing agent 2 to absorb moisture. In addition, during the fire extinguishing process, when the air pressure inside the housing 1 increases, the diaphragm is easily broken, without affecting the normal discharge process of the nozzle 3.

[0038] In addition, the present invention also discloses a method for installing the aforementioned fire extinguishing device with integrated detection, activation and pressure relief, which comprises the following steps:

[0039] S1: Open the front cover 1.1 at the front end of the housing 1, load the fire extinguishing agent 2 into the housing 1, then install the ignition head 4 on the top surface of the fire extinguishing agent 2, and pull the starting line 4.1 upwards, and then place the coolant 9 on the top of the fire extinguishing agent 2;

[0040] S2: Pass the upper end of the start wire 4.1 upward through the pressure relief groove 6 of the front cover 1.1 and connect it to the output end of the piezoelectric ceramic 5 installed in the pressure relief groove 6;

[0041] S3: Fix the front cover 1.1 to the front end of the shell 1, insert the mounting cylinder 8 into the gap between the outer surface of the piezoelectric ceramic 5 and the inner surface of the pressure relief groove 6, and then install the detection and knocking device 7 on the upper side of the mounting cylinder 8.

[0042] The present invention discloses a fire extinguishing method of the above-mentioned detection, activation and pressure relief integrated fire extinguishing device, which comprises the following steps:

[0043] S1: Before the fire extinguishing device is put into use, the safety pin 7.5 is first pulled out to put the detection and knocking device 7 into the ready state;

[0044] S2: When a fire occurs, the fusible element 7.2 melts due to the heat, thereby releasing the limiting effect on the impact rod 7.1. Under the action of the elastic force of the compression spring 7.4, the impact rod 7.1 moves downward and drives the impact plate 7.3 to impact the piezoelectric ceramic 5;

[0045] S3: The piezoelectric ceramic 5 is activated by the impact and generates an induced current, which is conducted to the ignition head 4 through the starting line 4.1 to make it work, thereby igniting the fire extinguishing agent 2;

[0046] S4: The fire extinguishing agent 2 burns to produce fire extinguishing material, which then passes through the coolant 9 and is ejected from the nozzle 3 to perform the fire extinguishing process.

[0047] The present invention discloses a pressure relief method for the aforementioned fire extinguishing device with integrated detection, activation and pressure relief, which comprises the following steps:

[0048] S1: During the fire extinguishing process, if the pressure in the housing 1 increases abnormally, the mounting cylinder 8 and the piezoelectric ceramic 5 are pulled upward out of the pressure relief groove 6 under the action of the air pressure;

[0049] S2: Gas is ejected from the pressure relief groove 6 to achieve pressure relief function;

[0050] S3: During the upward movement of the piezoelectric ceramic 5, the ignition head 4 is driven upward by the starter wire 4.1. When the ignition head 4 moves upward and contacts the lower screen 10, the screen 10 is driven upward together.

[0051] S4: Screen 10 moves upward, gradually compressing coolant 9. This gradually compressed coolant 9 acts as a buffer for screen 10. Once screen 10 stops moving, ignition head 4 is also blocked and stops moving. This, in turn, pulls piezoelectric ceramic 5, via trigger wire 4.1, to a stop, preventing the piezoelectric ceramic 5 and mounting cylinder 8 from being ejected and potentially causing a safety accident. During this step, the gradually compressed coolant 9 acts as a buffer for screen 10, preventing screen 10 from moving too quickly and breaking trigger wire 4.1.

[0052] The above embodiments are merely preferred technical solutions of the present invention and should not be construed as limiting the present invention. The embodiments and features in the embodiments of this application may be arbitrarily combined with each other unless they conflict. The scope of protection of the present invention shall be the technical solutions described in the claims, including equivalent alternatives to the technical features of the technical solutions described in the claims. Equivalent alternatives and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A detection-activated pressure-relieving integrated fire extinguishing device, comprising a housing (1), a fire extinguishing agent (2) disposed in the housing (1), and a nozzle (3) disposed at the front end of the housing (1), characterized in that: The end face of the fire extinguishing agent (2) contacts the ignition head (4), the starting line (4.1) of the ignition head (4) passes through the front end of the shell (1) and is connected to the output end of the piezoelectric ceramic (5), the piezoelectric ceramic (5) is installed in the pressure relief groove (6) at the front end of the shell (1), and a detection knocking device (7) is provided above the piezoelectric ceramic (5); the detection knocking device (7) cooperates with the pressure relief groove (6) through the installation cylinder (8), the outer side of the installation cylinder (8) contacts the inner side of the pressure relief groove (6), and the piezoelectric ceramic (5) is provided below the inner side of the installation cylinder (8); a coolant (9) is also provided between the top surface of the fire extinguishing agent (2) and the nozzle (3); the fire extinguishing agent (2) is an aerosol generating agent powder or a powder column structure formed by pressing the aerosol generating agent powder.

2. The detection-activated pressure-relieving integrated fire extinguishing device according to claim 1, characterized in that: The detection knocking device (7) comprises a striking rod (7.1) arranged above the inner side of the mounting cylinder (8), the upper side of the striking rod (7.1) slidingly cooperates with the top of the mounting cylinder (8), a fusible element (7.2) contacting the top of the mounting cylinder (8) is horizontally penetrated in the striking rod (7.1), a limiting striking disc (7.3) is provided at the bottom of the striking rod (7.1), a compression spring (7.4) is provided between the upper surface of the striking disc (7.3) and the top of the mounting cylinder (8), and the compression spring (7.4) is penetrated on the surface of the striking rod (7.1).

3. The detection-activated pressure-relieving integrated fire extinguishing device according to claim 2, characterized in that: The lower surface of the impact disk (7.3) contacts the safety pin (7.5), and the safety pin (7.5) is transversely arranged on the side of the installation cylinder (8).

4. The detection-activated pressure-relieving integrated fire extinguishing device according to claim 2, characterized in that: The fusible component (7.2) is a bismuth-tin low-melting-point alloy; the ignition head (4) is a bridgeless ignition head, which is embedded in an ignition powder bag (12), and aerosol generating agent powder is provided in the ignition powder bag (12).

5. The detection-activated pressure-relieving integrated fire extinguishing device according to claim 1, characterized in that: A partition (10) is provided on both the upper and lower sides of the coolant (9), and a support (11) is provided between the bottom of the partition (10) on the lower side and the top surface of the fire extinguishing agent (2).

6. The detection-activated pressure-relieving integrated fire extinguishing device according to claim 1, characterized in that: The front end of the housing (1) is threadably engaged with the front cover (1.1); a nozzle (3) and a pressure relief groove (6) are provided on the front cover (1.1); a step for limiting the position of the piezoelectric ceramic (5) is further provided in the pressure relief groove (6); and a diaphragm is provided on the surface of the nozzle (3).

7. A method for installing the fire extinguishing device with integrated detection, activation and pressure relief according to claim 6, characterized in that: It includes the following steps: S1: Open the front cover (1.1) at the front end of the housing (1), load the fire extinguishing agent (2) into the housing (1), then install the ignition head (4) on the top surface of the fire extinguishing agent (2), and pull the starting line (4.1) upwards, and then set the coolant (9) on the top of the fire extinguishing agent (2); S2: Pass the upper end of the start line (4.1) upward through the pressure relief groove (6) of the front cover (1.1) and connect it to the output end of the piezoelectric ceramic (5) installed in the pressure relief groove (6); S3: The front cover (1.1) is fixed to the front end of the housing (1), the mounting cylinder (8) is inserted into the gap between the outer surface of the piezoelectric ceramic (5) and the inner surface of the pressure relief groove (6), and then the detection and knocking device (7) is installed on the upper side of the mounting cylinder (8).

8. A fire extinguishing method for the fire extinguishing device with integrated detection, activation and pressure relief according to claim 3, characterized in that: It includes the following steps: S1: Before the fire extinguishing device is put into use, first remove the safety pin (7.5) so that the detection knocking device (7) is in a ready-to-activate state; S2: When a fire occurs, the fusible element (7.2) is heated and melts, thereby releasing the limiting effect on the impact rod (7.1). Under the action of the elastic force of the compression spring (7.4), the impact rod (7.1) moves downward and drives the impact disk (7.3) to impact the piezoelectric ceramic (5); S3: The piezoelectric ceramic (5) is activated after being struck and generates an induced current, which is conducted to the ignition head (4) through the starting wire (4.1) to make it work, thereby igniting the fire extinguishing agent (2); S4: The fire extinguishing agent (2) burns to produce fire extinguishing material, which then passes through the coolant (9) and is ejected from the nozzle (3) to carry out the fire extinguishing process.

Images