Signal feedback device suitable for non-stored-pressure fire extinguishing device

Abstract

The utility model provides a signal feedback device suitable for a non-stored-pressure fire extinguishing device, and aims to improve the accuracy of starting signal feedback of the fire extinguishing device. The device comprises a pressure switch, a connector, a blanking cap and the like, the pressure switch is connected with a wiring harness connector in a welded mode and fixed to the connector through a switch sheath, the connector is connected with a water mist spray head and the blanking cap, and a rupture disk is arranged in the blanking cap and fixed through a pressing threaded sleeve. The pressure switch is a pressure type sensor and is converted into an on state from an off state when the starting pressure of the fire extinguishing device exceeds a set value, a trigger signal is generated and fed back to a control system, and the actual spraying state of a fire extinguishing medium can be accurately reflected. The device has the advantages of wide application range, high feedback signal accuracy, reusability and the like, and is suitable for non-stored-pressure fire extinguishing devices with various driving forms and fire extinguishing media.

Description

Technical Field

[0001] This utility model relates to the field of fire protection, and in particular to a signal feedback device suitable for non-pressurized fire extinguishing devices. Background Technology

[0002] With the rapid development of modern society, the types of fire extinguishing devices applicable to different fields are also increasing. For certain specific fire extinguishing locations, non-pressurized fire extinguishing devices are required. These devices have no internal pressure under normal conditions; upon activation, they generate gas to drive the extinguishing agent outwards to achieve the purpose of extinguishing the fire. Currently, the most commonly used non-pressurized fire extinguishing devices use a gas-generating agent as the driving element. This involves using electrical or thermal signals to ignite the gas-generating agent, causing it to produce a large amount of gas that drives the extinguishing agent. Because the ignition of the gas-generating agent also generates a large amount of heat, the activation signal feedback for this type of fire extinguishing device currently mostly uses a temperature sensor. The temperature sensor is placed near the gas-generating agent, and the heat generated when the agent ignites triggers the sensor to generate a feedback signal. This method only detects whether the device is activated; it cannot accurately reflect whether the fire extinguishing device is functioning or whether the extinguishing agent has been discharged. Utility Model Content

[0003] The purpose of this invention is to provide a signal feedback device suitable for non-pressurized fire extinguishing devices, so as to accurately reflect the working status of the fire extinguishing device and avoid the problem that the system cannot accurately determine the failure of the fire extinguishing device due to reasons such as fire extinguishing agent leakage or drive piston failure. This provides a basis for accurately finding the cause of the accident and determining the relevant responsibilities.

[0004] This utility model is achieved using the following technical solution: a signal feedback device suitable for non-pressurized fire extinguishing devices, characterized in that it includes: a pressure switch; a connector; a plug; a wiring harness connector, a switch sleeve, a fine water mist nozzle, a rupture disc, and a tightening screw sleeve; wherein: the wiring harness connector is connected to the pressure switch by welding; the pressure switch is tightened to the switch sleeve and then tightened to the connector; the fine water mist nozzle is tightened to the connector and then tightened to the plug sleeve; the rupture disc is installed inside the plug sleeve and tightened to the plug sleeve.

[0005] Furthermore, the pressure switch is a pressure sensor manufactured by a professional manufacturer. It is normally in the off state, but turns on when the received pressure exceeds its set value. The set value is determined based on the driving force when the non-pressurized fire extinguishing device is activated.

[0006] Furthermore, the rupture disc is made of a metal material that is stable in performance and does not react with the extinguishing medium, and its burst pressure is determined based on the driving force when the non-pressurized fire extinguishing device is activated.

[0007] Furthermore, the plug is connected to the housing of the non-pressurized fire extinguishing device via a threaded structure, and a sealing ring is provided at the bottom of the plug thread to ensure a sealing effect.

[0008] Furthermore, the wiring harness connector is used to transmit the trigger signal from the pressure switch to the control system of the non-pressurized fire extinguishing device, thereby realizing the feedback function of the start signal.

[0009] Furthermore, the clamping screw sleeve is used to secure the rupture disc and form a seal with the plug to prevent leakage of the extinguishing agent.

[0010] Furthermore, the fine water mist nozzle is connected to the extinguishing medium inside the fire extinguishing device, and is used to form a fine water mist spraying effect when the extinguishing medium is sprayed out.

[0011] The signal feedback device for non-pressurized fire extinguishing devices described in this utility model has the following advantages:

[0012] 1. Wide range of applications: This non-pressurized fire extinguishing device is applicable to various fire extinguishing media and driving methods.

[0013] 2. High accuracy: The pressure sensor is located at the outlet of the extinguishing medium. When the extinguishing device is triggered, if a feedback signal is received from the pressure sensor, it can be determined that the extinguishing device has been reliably activated. Otherwise, there may be problems such as leakage of the extinguishing medium, providing a basis for subsequent investigation.

[0014] 3. Reusable: The reusable function can be achieved by selecting a reset-type pressure switch. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 A schematic diagram of a signal feedback device suitable for non-pressurized fire extinguishing systems;

[0017] In the diagram, 1-wire harness connector, 2-pressure switch, 3-switch sleeve, 4-fine water mist nozzle, 5-connector, 6-plug, 7-clamping sleeving, 8-rupture disc. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0020] like Figure 1 As shown, a signal feedback device suitable for non-pressurized fire extinguishing devices includes a pressure switch 2, a connector 5, and a plug 6. The wire harness connector 1 is connected to the pressure switch 2 by welding. After the pressure switch 2 is tightened to the switch sleeve 3, it is tightened to the connector 5. After the fine water mist nozzle 4 is tightened to the connector 5, the connector is tightened to the plug 6. The rupture disc 8 is placed in the plug 6 and tightened with a clamping screw 7.

[0021] Furthermore, the pressure switch 2 is a pressure sensor manufactured by a professional manufacturer. It is normally in the off state, but when the received pressure exceeds its set value, it switches to the on state. This set value should be determined in conjunction with the driving force when the fire extinguishing device is activated.

[0022] Furthermore, the rupture disc 8 should be made of a stable metal material that does not react with the extinguishing medium, and its burst pressure should be determined based on the driving force when the non-pressurized fire extinguishing device is activated.

[0023] Furthermore, the plug 6 is connected and fixed to the fire extinguishing device housing through a threaded structure. To ensure a sealing effect, a sealing rubber ring is installed at the bottom of the thread of the plug 6.

[0024] The working process of this utility model is as follows: the plug 6 is connected and fixed to the fire extinguishing device housing. After the fire extinguishing device is started, the driving pressure generated pushes the fire extinguishing agent. When the fire extinguishing agent breaks through the rupture disc 8, the fire extinguishing agent is sprayed out from the fine water mist nozzle 4, and at the same time the pressure switch 2 is triggered. The generated trigger signal is fed back to the control system through the wiring harness connector 1.

[0025] The above embodiments describe the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Modifications and variations made by those skilled in the art without departing from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A signal feedback device suitable for non-pressurized fire extinguishing devices, characterized in that, include: Pressure switch (2); connector (5); plug (6); wire harness connector (1), switch sleeve (3), fine water mist nozzle (4), rupture disc (8) and tightening screw sleeve (7); wherein: the wire harness connector (1) is connected to the pressure switch (2) by welding; the pressure switch (2) is tightened and then tightened and fixed to the connector (5) after being tightened and fixed to the switch sleeve (3); the fine water mist nozzle (4) is tightened and fixed to the connector (5), and then the connector (5) is tightened and fixed to the plug (6); the rupture disc (8) is installed inside the plug (6) and tightened and fixed by the tightening screw sleeve (7).

2. The signal feedback device for non-pressurized fire extinguishing devices according to claim 1, characterized in that, The pressure switch (2) is a pressure sensor produced by a professional manufacturer. It is normally in the off state, but turns into the on state when the received pressure exceeds its set value. The set value is determined based on the driving force when the non-pressurized fire extinguishing device is activated.

3. A signal feedback device suitable for non-pressurized fire extinguishing devices according to claim 1, characterized in that, The rupture disc (8) is made of a metal material that is stable and does not react with the extinguishing medium. Its rupture pressure is determined based on the driving force when the non-pressurized fire extinguishing device is activated.

4. A signal feedback device suitable for non-pressurized fire extinguishing devices according to claim 1, characterized in that, The plug (6) is connected to the housing of the non-pressurized fire extinguishing device through a threaded structure. The bottom of the thread of the plug (6) is provided with a sealing ring to ensure the sealing effect.

5. A signal feedback device suitable for non-pressurized fire extinguishing devices according to claim 1, characterized in that, The wiring harness connector (1) is used to transmit the trigger signal from the pressure switch (2) to the control system of the non-pressurized fire extinguishing device, so as to realize the feedback function of the start signal.

6. A signal feedback device suitable for non-pressurized fire extinguishing devices according to claim 1, characterized in that, The clamping nut (7) is used to fix the rupture disc (8) and form a seal with the plug (6) to prevent the extinguishing agent from leaking.

7. A signal feedback device suitable for non-pressurized fire extinguishing devices according to claim 1, characterized in that, The fine water mist nozzle (4) is connected to the extinguishing medium in the fire extinguishing device and is used to form a fine water mist spraying effect when the extinguishing medium is sprayed out.

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