Passive flame triggering device and method

Abstract

The present invention discloses a passive flame triggering device and method, comprising one or more flame temperature triggers (1), a device housing (2), an air-blocking component (3), a gas-generating agent (4), a trigger switch (5) and a thermal battery (6); a gas-filled cavity is arranged in the device housing (2), the gas-generating agent (4) is arranged in the gas-filled cavity, the flame temperature trigger (1) is connected to the device housing (2), a flame transmission hole connected to the flame temperature trigger (1) is arranged on the device housing (2), the air-blocking component (3) is arranged on the through hole, the thermal battery (6) is arranged in the device housing (2), an excitation hole is arranged between the excitation part of the thermal battery (6) and the gas-generating cavity, and the trigger switch (5) is arranged in the excitation hole.

Description

Technical Field

[0001] The invention relates to a temperature triggering device, in particular to a passive flame triggering device, and belongs to the technical field of sensors. Background Art

[0002] A temperature sensor is a device that can sense temperature and convert it into a usable output signal. With the use of various composite fire detectors, a new problem has arisen, that is, once a power supply device fails or the system is powered off, it will cause partial or entire system failure, causing the system to be unable to operate normally.

[0003] Thermal battery is a heat-activated reserve battery. When stored, the electrolyte is a non-conductive solid. When used, the heating agent inside is ignited by power or impact, causing the electrolyte to melt and become a conductive ion conductor and be activated. When the battery is needed to work, an external electrical signal or mechanical force is used to ignite the igniter inside the battery, igniting the heating system inside the battery, so that the single battery reaches its operating temperature (400-600℃), and the non-conductive solid electrolyte at room temperature is heated and melted to become an ionic conductor. An electrochemical reaction occurs between the positive and negative electrodes to generate electrical energy. After connecting to the external circuit, the battery enters the working state. Summary of the invention

[0004] In order to overcome the problems of the prior art, the present invention provides a passive flame triggering device and method. The technical solution adopted by the passive flame triggering device of the present invention is as follows:

[0005] A passive flame trigger device, characterized in that it includes one or more flame temperature triggers, a device shell, an air-locking component, a gas-producing agent, a trigger switch and a thermal battery; an air-filled cavity is provided in the device shell, the gas-producing agent is provided in the air-filled cavity, the flame temperature trigger is connected to the device shell, a fire transmission hole connected to the flame temperature trigger is provided on the device shell, the air-locking component is provided on the through hole, the thermal battery is provided in the device shell, an excitation hole is provided between the excitation part of the thermal battery and the gas-producing cavity, and a trigger switch is provided in the excitation hole.

[0006] The flame temperature trigger is a metal pipe with one end closed and a medicine column attached to its inner wall; when the external temperature of the flame temperature trigger reaches the ignition point of the medicine, the flame temperature trigger introduces heat into the internal medicine to cause a combustion reaction and burn along the inside of the tube toward both ends.

[0007] The air-sealing component includes a truncated cone-shaped cavity and an air-sealing steel ball or an air-sealing cone. The air-sealing steel ball or the air-sealing cone is arranged in the truncated cone-shaped cavity. The end with a smaller diameter of the truncated cone-shaped cavity is connected to the fire transfer hole, and an air vent is arranged at the edge of the end face of the other end. The air vent is connected to the inflation cavity.

[0008] The trigger switch is a firing pin, a guide rail is arranged in the excitation hole, a slide groove is arranged at the corresponding position of the firing pin, and the slide groove cooperates with the guide rail.

[0009] The technology adopted by a passive flame triggering method of the present invention is based on the above-mentioned passive flame triggering device and includes the following steps:

[0010] S1: When the temperature of the flame temperature trigger reaches the trigger line explosion temperature, a melting, decomposition and combustion reaction occurs inside the flame temperature trigger, and the generated heat source extends toward the device housing;

[0011] S2: The heat source enters an air-tight component, and the flame passes through the air-tight component and enters an air-filled cavity, in which there is a gas-generating agent. At this time, the flame ignites the gas-generating agent;

[0012] S3: The airtight component is then sealed, and the high-pressure gas generated pushes the trigger switch to trigger the excitation part of the thermal battery, causing the thermal battery to melt and discharge, heating and melting the solid electrolyte that is non-conductive at room temperature into an ionic conductor, and an electrochemical reaction occurs between the positive and negative electrodes to generate electrical energy. After being connected to the external circuit, the thermal battery enters the working state.

[0013] The beneficial effects achieved by the present invention are:

[0014] 1. The agent has a corresponding combustion temperature. When the external heat radiation and temperature reach the combustion temperature of the agent at the same time, the agent can be ignited. Compared with electronic sensors, this triggering method has the characteristics of long life and passiveness;

[0015] 2. The flame temperature trigger wire / head adopts the agent baking trigger, and the response time is fast;

[0016] 3. The present invention has low cost, simple structure, easy implementation and great value to sensor technology;

[0017] 4. It has a very long storage time (at least 15 years) and excellent environmental adaptability (-40℃~85℃). It can be used as the starting power supply for the terminal defense fire extinguishing system in extremely complex environments, which can greatly improve the reliability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Other features and advantages of the invention can be obtained from the following description of the preferred embodiments of the invention and the claims in conjunction with the accompanying drawings. In this case, the individual features of the different embodiments shown in the drawings can be combined in any desired manner without exceeding the scope of the invention. In the drawings:

[0019] Figure 1 It is a structural principle block diagram of the present invention;

[0020] Explanation of the accompanying figures: 1-flame temperature trigger, 2-device housing, 3-gas-sealing component, 4-gas-generating agent, 5-trigger switch, 6-thermal battery.

[0021] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Example

[0023] like Figure 1 As shown, in this embodiment, a passive flame trigger device includes one or more flame temperature triggers 1, a device shell 2, an air-blocking component 3, a gas-producing agent 4, a trigger switch 5 and a thermal battery 6; an air-filled cavity is provided in the device shell 2, the gas-producing agent 4 is provided in the air-filled cavity, the flame temperature trigger 1 is connected to the device shell 2, a fire transmission hole connected to the flame temperature trigger 1 is provided on the device shell 2, the air-blocking component 3 is provided on the through hole, the thermal battery 6 is provided in the device shell 2, an excitation hole is provided between the excitation part of the thermal battery 6 and the gas-producing cavity, and a trigger switch 5 is provided in the excitation hole.

[0024] It should be noted that the flame temperature trigger 1 is a metal pipe with one end closed, and 4 columns of gas-producing agent are attached to its inner wall; when the external temperature of the flame temperature trigger 1 reaches the ignition point of the agent, the flame temperature trigger 1 introduces heat into the internal agent to cause a combustion reaction, and burns along the inside of the tube toward both ends.

[0025] It should be understood that the air-sealing component 3 includes a frustoconical cavity and an air-sealing steel ball or an air-sealing cone, which is arranged in the frustoconical cavity. The end with a smaller diameter of the frustoconical cavity is connected to the fire transfer hole, and an air vent is arranged at the edge of the other end face, and the air vent is connected to the inflation cavity.

[0026] The trigger switch 5 is a firing pin, a guide rail is arranged in the excitation hole, a slide groove is arranged at the corresponding position of the firing pin, and the slide groove cooperates with the guide rail.

[0027] The specific working principle of this embodiment is as follows:

[0028] When the temperature of the flame temperature trigger 1 reaches the trigger line explosion temperature, a melting, decomposition and combustion reaction occurs inside the flame temperature trigger 1, and the generated heat source extends toward the device shell 2; the heat source enters an air-tight component 3, and the flame passes through the air-tight component 3 and enters an air-filled cavity, in which there is a gas-generating agent 4, and the flame ignites the gas-generating agent 4 at this time; the air-tight component 3 is then sealed, and the generated high-pressure gas pushes the trigger switch 5 to trigger the excitation part of the thermal battery 6, causing the thermal battery 6 to melt and discharge, heating and melting the solid electrolyte that is not conductive at room temperature into an ionic conductor, and an electrochemical reaction occurs between the positive and negative electrodes to generate electrical energy. After being connected to the external circuit, the thermal battery 6 enters a working state.

[0029] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A passive flame triggering device, characterized in that: The device comprises one or more flame temperature triggers (1), a device housing (2), an air-blocking component (3), a gas-generating agent (4), a trigger switch (5) and a thermal battery (6); the device housing (2) is provided with an air-filling cavity, the gas-generating agent (4) is arranged in the air-filling cavity, the flame temperature trigger (1) is connected to the device housing (2), the device housing (2) is provided with a flame transmission hole connected to the flame temperature trigger (1), the air-blocking component (3) is arranged on the through hole, the thermal battery (6) is arranged in the device housing (2), an excitation hole is arranged between the excitation part of the thermal battery (6) and the gas-generating cavity, and the trigger switch (5) is arranged in the excitation hole; The flame temperature trigger (1) is a metal pipe with one end closed, and a medicine column is attached to the inner wall of the pipe. When the external temperature of the flame temperature trigger (1) reaches the ignition point of the medicine, the flame temperature trigger (1) introduces heat into the internal medicine to cause a combustion reaction, and burns along the inside of the pipe toward both ends. The air-sealing component (3) comprises a truncated cone-shaped cavity and an air-sealing steel ball or an air-sealing cone, wherein the air-sealing steel ball or the air-sealing cone is arranged in the truncated cone-shaped cavity, wherein the end with a smaller diameter of the truncated cone-shaped cavity is connected to the fire transfer hole, and an air vent is arranged at the edge of the end surface of the other end, wherein the air vent is connected to the inflation cavity; The trigger switch (5) is a firing pin, a guide rail is arranged in the excitation hole, a slide groove is arranged at a corresponding position of the firing pin, and the slide groove cooperates with the guide rail.

2. A passive flame triggering method, using the passive flame triggering device as claimed in claim 1, characterized in that: The steps include: S1: When the temperature of the flame temperature trigger (1) reaches the trigger wire explosion temperature, a decomposition and combustion reaction occurs inside the flame temperature trigger (1), and the generated heat source extends toward the device housing (2); S2: The heat source enters an air-tight component (3), and the flame passes through the air-tight component (3) and enters an air-filled cavity. The air-filled cavity contains a gas-generating agent (4), and the flame ignites the gas-generating agent (4). S3: The airtight component (3) is then sealed, and the high-pressure gas generated pushes the trigger switch (5) to trigger the excitation part of the thermal battery (6), causing the thermal battery (6) to melt and discharge, heating and melting the non-conductive solid electrolyte at room temperature to form an ionic conductor, and an electrochemical reaction occurs between the positive and negative electrodes to generate electrical energy. After being connected to an external circuit, the thermal battery (6) enters a working state.

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