Gas-driven fire extinguishing agent scattering device and fire extinguishing agent scattering method thereof

Abstract

The invention relates to a gas-driven fire extinguishing agent scattering device and a fire extinguishing agent scattering method thereof, and belongs to the technical field of fire fighting equipment. Comprising a shell, the top end of the shell is connected with a first baffle, the middle of the first baffle is connected with a valve core, the bottom face of the first baffle is connected with a high-pressure air chamber cavity, a high-pressure air chamber is formed between the first baffle and the high-pressure air chamber cavity, one side of the bottom face of the high-pressure air chamber cavity is connected with an air pressure sensor, and the middle of the bottom face of the high-pressure air chamber cavity is connected with an inflation electromagnetic valve. A second baffle is connected to the upper middle portion of the shell, the inflation pipeline is connected with the middle of the second baffle, a dry powder extinguishing agent is filled between the second baffle and the shell, and a position sensor is connected to the middle of the bottom face of the shell. The throwing process of the fire extinguishing agent can be accelerated, and the effective fire extinguishing range and throwing uniformity of the fire extinguishing agent are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of fire fighting equipment, and in particular to a gas driven fire extinguishing agent spreading device and a fire extinguishing agent spreading method thereof. Background Art

[0002] When a fire occurs, in order to quickly extinguish the fire, it is necessary to spread fire extinguishing agents to the fire scene. At this time, a fire extinguishing agent spreading device is needed. The gas-driven fire extinguishing agent spreading device is a new type of fire extinguishing agent spreading device, which uses gas to drive the fire extinguishing agent to spread.

[0003] Most of the existing gas-driven fire extinguishing agent dispersing devices use a piston to push the fire extinguishing agent to the head of the device to achieve the dispersal of the fire extinguishing agent. However, since the piston pushes the fire extinguishing agent to the head of the device a certain distance, the cavity between the air chamber and the piston gradually increases during the pushing process, causing the gas-driven piston pressure to gradually decrease. In addition, the friction between the piston and the outer shell will slow down the movement speed of the piston, resulting in the entire fire extinguishing agent dispersing process taking a long time and being unable to quickly extinguish the fire. In addition, the fire extinguishing agent dispersing method in the device is to open the head of the device and the fire extinguishing agent is dispersed by the head of the device. This method makes it difficult to control the dispersal speed of the fire extinguishing agent, and causes the fire extinguishing agent to scatter irregularly downward in a cone shape, ultimately resulting in poor uniformity of the fire extinguishing agent and a small effective fire extinguishing range. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a gas-driven fire extinguishing agent dispersing device and a fire extinguishing agent dispersing method thereof. The technical solution of the present invention is as follows:

[0005] The present invention provides a gas-driven fire extinguishing agent scattering device, which comprises a shell, a first baffle connected to the top of the shell, a valve core connected to the middle of the first baffle, an air inlet of the valve core used to be connected to an external air compressor, a high-pressure air chamber cavity connected to the bottom surface of the first baffle, a high-pressure air chamber is formed between the first baffle and the high-pressure air chamber cavity, an air outlet of the valve core is communicated with the high-pressure air chamber, an air pressure sensor is connected to one side of the bottom surface of the high-pressure air chamber cavity, an inflation solenoid valve is connected to the middle of the bottom surface of the high-pressure air chamber cavity, and the air inlet of the inflation solenoid valve is communicated with the high-pressure air chamber, the air outlet of the inflation solenoid valve is connected to an inflation pipeline, and the air outlet of the inflation solenoid valve is communicated with the air inlet of the inflation pipeline, the air outlet of the inflation pipeline is connected to a high-pressure air bag, a second baffle is connected to the upper and middle part of the shell, the inflation pipeline is connected to the middle of the second baffle, dry powder fire extinguishing agent is filled between the second baffle and the shell, a position sensor is connected to the middle of the bottom surface of the shell, and the air pressure sensor, the inflation solenoid valve and the position sensor are all electrically connected to a controller.

[0006] Optionally, a sealing ring is connected between the second baffle and the shell.

[0007] Optionally, the air pressure sensor is electrically connected to the controller via a wire.

[0008] Optionally, a handle is connected to the top surface of the first baffle.

[0009] Optionally, a flange is connected to the edge of the top surface of the second baffle.

[0010] Optionally, the shell, the first baffle and the second baffle are made of ABS plastic.

[0011] The present invention also provides a method for spreading fire extinguishing agent using a gas-driven fire extinguishing agent spreading device, which uses the above-mentioned gas-driven fire extinguishing agent spreading device and comprises:

[0012] S1, using an air compressor to charge the high-pressure air chamber through the valve core in advance, the air pressure sensor detects the air pressure of the high-pressure air chamber in real time and sends the air pressure data to the controller, and when the controller determines that the air pressure of the high-pressure air chamber reaches a preset pressure according to the air pressure data, the controller stops charging the high-pressure air chamber;

[0013] S2, when it is necessary to spread the fire extinguishing agent, the gas-driven fire extinguishing agent spreading device is transported to the location where the fire needs to be extinguished, and the position sensor monitors the position of the gas-driven fire extinguishing agent spreading device in real time and sends the position data to the controller;

[0014] S3, when the controller determines that the gas-driven fire extinguishing agent spreading device reaches the specified position according to the position data, the controller controls the inflation solenoid valve to open, and the gas in the high-pressure gas chamber is filled into the high-pressure airbag. The high-pressure airbag expands and quickly squeezes the dry powder fire extinguishing agent, driving the outer shell to rupture, and the dry powder fire extinguishing agent is scattered outward and falls into the position where the fire needs to be extinguished.

[0015] All the above optional technical solutions can be combined arbitrarily, and the present invention does not provide detailed descriptions of the structures after the combinations.

[0016] By means of the above scheme, the beneficial effects of the present invention are as follows:

[0017] By arranging a valve core, a high-pressure air chamber, an inflation electromagnetic valve, a high-pressure airbag and a shell, and filling the high-pressure airbag with high-pressure gas in the high-pressure air chamber, the high-pressure airbag expands to drive the shell to rupture and realize the spreading of dry powder fire extinguishing agent. The gas-driven fire extinguishing agent spreading device provided by the present invention can speed up the spreading process of the fire extinguishing agent and improve the effective fire extinguishing range and spreading uniformity of the fire extinguishing agent.

[0018] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention.

[0020] The accompanying drawings are marked as: 1-first baffle, 2-high-pressure air chamber, 3-high-pressure air chamber cavity, 4-sealing ring, 5-dry powder fire extinguishing agent, 6-valve core, 7-wire, 8-air pressure sensor, 9-inflating electromagnetic valve, 10-second baffle, 11-inflating pipe, 12-housing, 13-high-pressure airbag, 14-position sensor, 15-handle, 16-flange. DETAILED DESCRIPTION

[0021] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0022] like Figure 1 As shown, the gas-driven fire extinguishing agent dispersing device provided by the present invention includes a shell 12, a first baffle 1 is threadedly connected to the top of the shell 12, a valve core 6 is threadedly connected to the middle of the first baffle 1, an air inlet of the valve core 6 is used to connect to an external air compressor, a high-pressure air chamber cavity 3 is threadedly connected to the bottom surface of the first baffle 1, a high-pressure air chamber 2 is formed between the first baffle 1 and the high-pressure air chamber cavity 3, an air outlet of the valve core 6 is connected to the high-pressure air chamber 2, an air pressure sensor 8 is threadedly connected to one side of the bottom surface of the high-pressure air chamber cavity 3, an inflation electromagnetic valve 9 is threadedly connected to the middle of the bottom surface of the high-pressure air chamber cavity 3, and the inflation electromagnetic valve 9 The air inlet is communicated with the high-pressure air chamber 2, the air outlet of the inflation solenoid valve 9 is threadedly connected with the inflation pipe 11 and the air outlet of the inflation solenoid valve 9 is communicated with the air inlet of the inflation pipe 11, the air outlet of the inflation pipe 11 is threadedly connected with the high-pressure airbag 13, the second baffle 10 is connected to the upper and middle part of the outer shell 12, the inflation pipe 11 is threadedly connected to the middle part of the second baffle 10, the second baffle 10 and the outer shell 12 are filled with dry powder fire extinguishing agent 5, the middle part of the bottom surface of the outer shell 12 is threadedly connected with a position sensor 14, the air pressure sensor 8, the inflation solenoid valve 9 and the position sensor 14 are all electrically connected to the controller.

[0023] The thread profile of the threaded connection can be triangular, and the direction of rotation is right-handed. The valve core 6 is used to pre-inflate the high-pressure air chamber 2 through an air compressor. The air pressure sensor 8 is used to monitor the air pressure in the high-pressure air chamber 2 during the inflation process to ensure that the air pressure in the high-pressure air chamber 2 can drive the high-pressure air bag 13 to expand and squeeze the dry powder fire extinguishing agent 5 when in use, so that the shell 12 ruptures. The controller can be a single-chip microcomputer, a PLC, etc.

[0024] In another embodiment, a sealing ring 4 is connected between the second baffle 10 and the outer shell 12 to ensure the sealing between the second baffle 10 and the outer shell 12 and prevent the dry powder fire extinguishing agent 5 from jumping into the upper part of the second baffle 10 .

[0025] In another embodiment, the air pressure sensor 8 is electrically connected to the controller via a wire 7. This air pressure sensor 8 is a wired air pressure sensor. Of course, the air pressure sensor 8 can also be a wireless air pressure sensor.

[0026] In another embodiment, a handle 15 is connected to the top surface of the first baffle 1. The handle 15 is provided to facilitate holding the gas-driven fire extinguishing agent dispensing device and to facilitate threaded connection of the first baffle 1 with the housing 12.

[0027] In another embodiment, a flange 16 is connected to the edge of the top surface of the second baffle 10 to facilitate threaded connection of the second baffle 10 to the housing 12 .

[0028] In another embodiment, the shell 12, the first baffle 1 and the second baffle 10 are made of ABS plastic, so that the gas-driven fire extinguishing agent dispersing device is relatively light in weight.

[0029] It should be noted that the selection of the high-pressure airbag 13 needs to be determined based on the shell-breaking pressure required for the outer shell 12 to stably disperse the fire extinguishing agent. Different high-pressure airbags 13 are selected for different shell-breaking pressures to ensure that the high-pressure airbag 13 can withstand a certain pressure without premature rupture. The embodiment of the present invention can obtain the final shell-breaking pressure by performing phased tests on the expansion shell-breaking pressure of the high-pressure airbag 13, and further improve the gas-driven fire extinguishing agent dispersing device based on the size of the shell-breaking pressure and the dispersion range of the dry powder fire extinguishing agent. The pressure inside the high-pressure airbag can be determined based on the ideal gas equation (1):

[0030] PV=nRT (1)

[0031] In formula (1), P is the pressure of the high-pressure airbag 13 when the shell 12 is ruptured; V is the volume of the high-pressure airbag 13 when the shell 12 is ruptured; n is the number of moles of gas inside the high-pressure airbag 13 when the shell 12 is ruptured; R is the ideal gas constant; T is the absolute temperature. According to formula (1), n ​​can be calculated, and then according to n = V' / V m , V m is the molar volume of the gas and it is a constant, so the standard atmospheric pressure volume V' that the air compressor needs to fill into the high-pressure gas chamber 2 can be calculated.

[0032] The embodiment of the present invention further provides a method for spreading fire extinguishing agent, which uses the gas-driven fire extinguishing agent spreading device described in the above embodiment, including:

[0033] S1, using an air compressor to fill the high-pressure air chamber 2 with gas through the valve core 6 in advance, the air pressure sensor 8 detects the air pressure of the high-pressure air chamber 2 in real time and sends the air pressure data to the controller, and when the controller determines that the air pressure of the high-pressure air chamber 2 reaches a preset pressure according to the air pressure data, the high-pressure air chamber 2 is stopped from being filled with gas; the preset pressure refers to the pressure value that can ensure that the high-pressure airbag 13 expands and ruptures and drives the shell 12 to rupture;

[0034] S2, when it is necessary to spread the fire extinguishing agent, the gas-driven fire extinguishing agent spreading device is transported to the location where the fire needs to be extinguished, and the position sensor 14 monitors the position of the gas-driven fire extinguishing agent spreading device in real time and sends the position data to the controller;

[0035] S3, when the controller determines that the gas-driven fire extinguishing agent scattering device reaches the specified position according to the position data, the controller controls the inflation solenoid valve 9 to open, and the gas in the high-pressure gas chamber 2 is filled into the high-pressure airbag 13. The high-pressure airbag 13 expands and quickly squeezes the dry powder fire extinguishing agent 5, driving the outer shell 12 to rupture, and the dry powder fire extinguishing agent 5 is scattered outward and falls into the position where fire extinguishing is required.

[0036] The gas-driven fire extinguishing agent dispersing device and the fire extinguishing agent dispersing method provided in the embodiments of the present invention have the following characteristics:

[0037] (1) Different from the conventional method of using a gas chamber to store gas and drive a piston to move and spread the fire extinguishing agent, the embodiment of the present invention uses the gas in the high-pressure gas chamber 2 to directly fill the high-pressure airbag 13. The high-pressure airbag 13 expands rapidly and drives the shell 12 to rupture, which can speed up the spreading process of the dry powder fire extinguishing agent 5 and achieve rapid fire extinguishing.

[0038] (2) When the outer shell 12 is broken, the dry powder fire extinguishing agent 5 is instantly scattered outward at a certain initial velocity. The initial velocity of the dry powder fire extinguishing agent 5 is basically consistent, and the final fire extinguishing range is a circular area with the gas-driven fire extinguishing agent spreading device as the center. This spreading method can not only increase the effective fire extinguishing range of the fire extinguishing agent, but also improve the uniformity of the spreading of the fire extinguishing agent.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principles of the present invention, and these improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A gas driven fire extinguishing agent dispersing device, characterized in that: The invention comprises a shell (12), the top of the shell (12) is connected to a first baffle (1), the middle of the first baffle (1) is connected to a valve core (6), the air inlet of the valve core (6) is used to be connected to an external air compressor, the bottom surface of the first baffle (1) is connected to a high-pressure air chamber cavity (3), a high-pressure air chamber (2) is formed between the first baffle (1) and the high-pressure air chamber cavity (3), the air outlet of the valve core (6) is connected to the high-pressure air chamber (2), one side of the bottom surface of the high-pressure air chamber cavity (3) is connected to an air pressure sensor (8), the middle of the bottom surface of the high-pressure air chamber cavity (3) is connected to an air charging electromagnetic valve (9), and the air inlet of the air charging electromagnetic valve (9) is connected to the high-pressure air chamber (2). The air outlet of the inflation electromagnetic valve (9) is connected to the inflation pipe (11) and the air outlet of the inflation electromagnetic valve (9) is in communication with the air inlet of the inflation pipe (11); the air outlet of the inflation pipe (11) is connected to the high-pressure air bag (13); the middle and upper part of the outer shell (12) is connected to the second baffle (10); the inflation pipe (11) is connected to the middle part of the second baffle (10); a dry powder fire extinguishing agent (5) is filled between the second baffle (10) and the outer shell (12); the middle part of the bottom surface of the outer shell (12) is connected to a position sensor (14); the air pressure sensor (8), the inflation electromagnetic valve (9) and the position sensor (14) are all electrically connected to the controller.

2. The gas-driven fire extinguishing agent dispersing device according to claim 1, characterized in that: A sealing ring (4) is connected between the second baffle (10) and the outer shell (12).

3. The gas-driven fire extinguishing agent dispersing device according to claim 1, characterized in that: The air pressure sensor (8) is electrically connected to the controller via a wire (7).

4. The gas-driven fire extinguishing agent dispersing device according to claim 1, characterized in that: A handle (15) is connected to the top surface of the first baffle (1).

5. The gas-driven fire extinguishing agent dispersing device according to claim 1, characterized in that: A flange (16) is connected to the edge of the top surface of the second baffle (10).

6. The gas-driven fire extinguishing agent dispersing device according to claim 1, characterized in that: The shell (12), the first baffle (1) and the second baffle (10) are made of ABS plastic.

7. A method for dispersing fire extinguishing agent using a gas-driven fire extinguishing agent dispersing device as claimed in any one of claims 1 to 6, characterized in that: include: S1, using an air compressor to charge the high-pressure air chamber (2) with gas through the valve core (6), the air pressure sensor (8) detects the air pressure of the high-pressure air chamber (2) in real time and sends the air pressure data to the controller, and when the controller determines that the air pressure of the high-pressure air chamber (2) reaches a preset pressure based on the air pressure data, the controller stops charging the high-pressure air chamber (2); S2, when it is necessary to spread the fire extinguishing agent, the gas-driven fire extinguishing agent spreading device is transported to the location where the fire needs to be extinguished, and the position sensor (14) monitors the position of the gas-driven fire extinguishing agent spreading device in real time and sends the position data to the controller; S3, when the controller determines that the gas-driven fire extinguishing agent dispersing device has reached the designated position based on the position data, the controller controls the inflation electromagnetic valve (9) to open, and the gas in the high-pressure gas chamber (2) is charged into the high-pressure airbag (13). The high-pressure airbag (13) expands and rapidly squeezes the dry powder fire extinguishing agent (5), driving the outer shell (12) to rupture, and the dry powder fire extinguishing agent (5) is scattered outward and falls into the position where the fire needs to be extinguished.

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