Gas-liquid mixed fire extinguishing device

Abstract

The utility model discloses a gas-liquid mixed fire extinguishing device which comprises a tank body (1), a reaction bin is arranged in the tank body (1), an igniter (2) is arranged in the reaction bin and filled with chemicals (3), a temperature sensing detection line (4) connected with the igniter (2) is arranged on the outer side of the tank body (1), an outlet (5) is formed in the top of the tank body (1), a support (6) is arranged at the outlet (5), an ejector pin (7) is arranged on the support (6), and an outer impeller is arranged on the ejector pin (7). The outer impeller comprises a rotating piece (8), the outer edge of the rotating piece (8) extends downwards to form a rotating sleeve (9), a plurality of long-strip-shaped air inlets (10) are formed in the peripheral face of the rotating sleeve (9), first fan blades (11) are arranged at the air inlets (10), an inner impeller (12) is arranged at the bottom of the rotating piece (8), and the ejector pin (7) is located at the axis of the inner impeller (12). The utility model has the advantage of lower weight.

Description

Technical Field

[0001] The utility model belongs to the field of fire fighting equipment, in particular to a gas-liquid mixed fire extinguishing device. Background Art

[0002] The gas-liquid mixed fire extinguishing device is a commonly used fire extinguishing equipment, which has the function of sensing the fire and automatically extinguishing the fire after sensing the fire, such as the QRR10LW / S type full flooding low-temperature aerosol automatic fire extinguishing device.

[0003] The structure of the existing gas-liquid mixed fire extinguishing device includes a tank body, a reaction chamber and a cooling chamber are arranged in the tank body, the reaction chamber is located below the cooling chamber, the reaction chamber is connected to the cooling chamber, the reaction chamber is filled with medicine and an igniter, a temperature sensing detection line connected to the igniter is arranged on the outside of the tank body, an outlet connected to the cooling chamber is arranged on the top of the tank body, and a plurality of cooling beads are arranged in the cooling chamber. When the temperature sensing detection line detects a fire, the igniter works to make the medicine react and generate an aerosol with a temperature exceeding 300°C. The aerosol passes through the cooling chamber, and the heat is absorbed by the cooling beads, and the temperature is lowered and then discharged from the outlet. The purpose of setting the cold zone chamber and the cooling beads is to cool the aerosol to avoid the continuous spraying of the aerosol to a fixed position, which may cause a secondary fire due to the accumulation of heat.

[0004] In order to achieve the cooling effect of the aerosol, a large number of cooling beads need to be filled in the cooling chamber, which results in the gas-liquid mixed fire extinguishing device being heavy and difficult to meet the requirements of lightweight. In some scenarios, it increases the difficulty of installation for workers. For example, signal base stations will be set up in remote mountains where roads are inaccessible. Signal base stations also have the risk of fire, and gas-liquid mixed fire extinguishing devices are also required. The heavy weight makes it difficult to carry, which increases the difficulty of installation. In particular, some signal base stations are located on high towers, and workers need to climb up to install them, which makes installation more difficult. Utility Model Content

[0005] The purpose of the utility model is to provide a gas-liquid mixed fire extinguishing device. The utility model has the advantage of low weight.

[0006] The technical solution of the utility model is as follows: a gas-liquid mixed fire extinguishing device comprises a tank body, a reaction chamber is arranged in the tank body, an igniter is arranged in the reaction chamber and filled with medicine, a temperature sensing detection line connected to the igniter is arranged on the outside of the tank body, an outlet is arranged on the top of the tank body, a bracket is arranged at the outlet, an ejector is arranged on the bracket, and an outer impeller is arranged on the ejector;

[0007] The outer impeller includes a rotating piece rotatably connected to the ejector pin, the outer edge of the rotating piece extends downward to form a rotating sleeve, the tank body is located on the inner side of the rotating sleeve, a plurality of long air inlets are provided on the outer circumferential surface of the rotating sleeve, a first fan blade extending outwardly obliquely is provided at the air inlet, an annular inner impeller is provided at the bottom of the rotating piece, and the ejector pin is located at the axis of the inner impeller.

[0008] In the aforementioned gas-liquid mixed fire extinguishing device, a plurality of air outlets are arranged on the outer peripheral surface of the inner impeller, and a plurality of second fan blades extending outwardly and obliquely are arranged at the air outlets, and the second fan blades and the first fan blades extend in opposite directions in the circumferential direction.

[0009] In the aforementioned gas-liquid mixed fire extinguishing device, the bottom of the rotating sleeve is provided with a cone opening extending outwardly in an inclined manner.

[0010] In the aforementioned gas-liquid mixed fire extinguishing device, a positioning concave point cooperating with the ejector pin is provided on the bottom surface of the rotating plate, and the upper end of the ejector pin is located in the positioning concave point.

[0011] In the aforementioned gas-liquid mixed fire extinguishing device, the inner side of the outlet is covered with a plastic film, and the igniter is close to the plastic film.

[0012] In the aforementioned gas-liquid mixed fire extinguishing device, the outer impeller and the inner impeller are both made of aluminum alloy.

[0013] Compared with the prior art, the utility model, based on the existing gas-liquid mixed fire extinguishing device, cancels the cooling chamber in the tank body and the cooling beads in the cooling chamber, and sets two inner and outer impellers on the tank body, wherein the outer impeller is connected to the tank body through the ejector pin, and the inner impeller surrounds the ejector pin and the outlet of the aerosol. When the aerosol is sprayed, the high-speed airflow acts on the inner impeller, generating a circumferential force to rotate the inner impeller, and the inner impeller drives the outer impeller to rotate. The outer impeller allows the outside low-temperature air to quickly enter between the rotating sleeve and the tank body, mix with the high-temperature aerosol, and quickly cool the aerosol. Since the newly added inner and outer impellers can be made of thin-walled, low-density aluminum alloy plates, the weight of the newly added inner and outer impellers will be much less than the weight of the cooling beads, making the weight of the utility model lower, achieving lightweight, easy to carry, and reducing the difficulty of installation for workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view structural schematic diagram of the utility model.

[0015] Figure 2 It is a top view schematic diagram of the rotating sleeve.

[0016] Figure 3 It is a top view schematic diagram of the inner impeller.

[0017] The markings in the attached drawings are: 1-tank body, 2-igniter, 3-agent, 4-temperature sensing line, 5-export, 6-bracket, 7-thimble, 8-rotating sheet, 9-rotating sleeve, 10-air inlet, 11-first fan blade, 12-inner impeller, 13-air outlet, 14-second fan blade, 15-conical mouth, 16-positioning concave point, 17-plastic film. DETAILED DESCRIPTION

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0019] Example 1. Gas-liquid mixed fire extinguishing device, such as Figure 1 As shown, it includes a tank body 1, a reaction chamber is arranged in the tank body 1, an igniter 2 is arranged in the reaction chamber and filled with reagents 3, a temperature sensing detection line 4 connected to the igniter 2 is arranged on the outside of the tank body 1, and a heat-insulating material is compounded on the outside of the tank body 1 or the inside of the reaction chamber to prevent the heat of the reagent reaction in the reaction chamber from being emitted. The characteristics are as follows:

[0020] An outlet 5 is provided at the top of the tank body 1, and a bracket 6 is provided at the outlet 5. The bracket 6 cannot block the outlet 5, and a metal mesh plate can be used. A thimble 7 is provided on the bracket 6, and an outer impeller is provided on the thimble 7. The outer impeller includes a rotating piece 8 supported by the thimble 7. The outer edge of the rotating piece 8 extends downward to form a rotating sleeve 9, and the tank body 1 is located on the inner side of the rotating sleeve 9.

[0021] like Figure 2 As shown, a plurality of vertically elongated air inlets 10 are provided on the outer circumferential surface of the rotating sleeve 9, and a first fan blade 11 extending obliquely upward and clockwise outward when viewed from above is provided at the air inlet 10. An inner impeller 12 is provided at the bottom of the rotating piece 8, and the ejector pin 7 is located at the axis of the inner impeller 12.

[0022] like Figure 3 As shown, a plurality of air outlets 13 are provided on the outer peripheral surface of the inner impeller 12, and a plurality of second fan blades 14 extending outwardly in an anti-clockwise direction when viewed from above are provided at the air outlets 13.

[0023] The bottom of the rotating sleeve 9 is provided with a cone opening 15 extending outwardly in an inclined manner.

[0024] The bottom surface of the rotating piece 8 is provided with a positioning concave point 16 cooperating with the ejector pin 7, and the upper end of the ejector pin 7 is located in the positioning concave point 16, so that the rotating piece 8 is always coaxial with the ejector pin 7 during rotation, avoiding friction between the rotating sleeve 9 and the tank body 1.

[0025] The inner side of the outlet 5 is covered with a plastic film 17 made of PE material, and the plastic film 17 is used to prevent the reagents in the reaction chamber from moisture.

[0026] The manufacturing method of the inner impeller is as follows: the rotating piece 8 and the rotating sleeve 9 are punched out of the aluminum alloy sheet, the air inlet 10 and the first fan blade 11 are punched out on the rotating sleeve 9, and the upper and lower ends of the first fan blade 11 remain connected to the rotating sleeve 9, so as to achieve better wind-circling and wind-collecting effects.

[0027] The inner impeller 12 is manufactured by stamping an air outlet 13 and a second fan blade 14 on an aluminum alloy thin strip, and then welding both ends into a ring and then welding them to the rotating piece 8.

[0028] Working principle: When the temperature sensing line 4 detects a fire, the igniter 2 works, causing the reagent to react and generate an aerosol with a temperature exceeding 300°C. The plastic film 17 melts and the outlet 5 opens. Figure 3 As shown, after the aerosol enters the inner side of the inner impeller 12, it diffuses horizontally outward and is discharged from the air outlet 13. The airflow impacts the second fan blade 14, causing the inner impeller 12 to rotate clockwise, and in turn drives the rotating piece 8 and the rotating sleeve 9 to rotate clockwise. Figure 2 As shown, when the rotating sleeve 9 rotates clockwise, the air located on the outside of the rotating sleeve 9 is driven by the first fan blade 11 to enter the inside of the rotating sleeve 9, and mixes with the aerosol, so that the temperature of the aerosol decreases, and is discharged from the cone mouth 15. The cone mouth 15 forms a large air outlet surface, which reduces the aerosol flow rate, so that the aerosol can be further mixed with the external air and cooled before being sprayed onto the combustible materials that may exist nearby, thereby further preventing the formation of secondary fires.

[0029] Example 2. Based on Example 1, both the inner and outer impellers are dip-coated with a thermal insulation coating to form a thermal insulation coating on the surface.

[0030] Embodiment 3: Based on the embodiment 1, the rotating piece 8 and the ejector pin 7 are connected by a bearing.

[0031] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

Claims

1. A gas-liquid mixed fire extinguishing device, comprising a tank body (1), a reaction chamber provided in the tank body (1), an igniter (2) and a reagent (3) filled in the reaction chamber, a temperature sensing detection line (4) connected to the igniter (2) provided on the outer side of the tank body (1), characterized in that: An outlet (5) is provided at the top of the tank body (1), a bracket (6) is provided at the outlet (5), an ejector pin (7) is provided on the bracket (6), and an external impeller is provided on the ejector pin (7); The outer impeller comprises a rotating plate (8) rotatably connected to the ejector pin (7); the outer edge of the rotating plate (8) extends downward to form a rotating sleeve (9); the tank body (1) is located on the inner side of the rotating sleeve (9); a plurality of long strip-shaped air inlets (10) are provided on the outer peripheral surface of the rotating sleeve (9); a first fan blade (11) extending outwardly and obliquely is provided at the air inlet (10); an annular inner impeller (12) is provided at the bottom of the rotating plate (8); and the ejector pin (7) is located at the axis of the inner impeller (12).

2. The gas-liquid mixed fire extinguishing device according to claim 1, characterized in that: A plurality of air outlets (13) are provided on the outer circumferential surface of the inner impeller (12), and a plurality of second fan blades (14) extending outwardly and obliquely are provided at the air outlets (13), wherein the second fan blades (14) and the first fan blades (11) extend in opposite directions in the circumferential direction.

3. The gas-liquid mixed fire extinguishing device according to claim 1, characterized in that: The bottom of the rotating sleeve (9) is provided with a cone opening (15) extending outwards in an inclined manner.

4. The gas-liquid mixed fire extinguishing device according to claim 1, characterized in that: A positioning concave point (16) cooperating with the ejector pin (7) is provided on the bottom surface of the rotating piece (8), and the upper end of the ejector pin (7) is located in the positioning concave point (16).

5. The gas-liquid mixed fire extinguishing device according to claim 1, characterized in that: The inner side of the outlet (5) is covered with a plastic film (17), and the igniter (2) is close to the plastic film (17).

6. The gas-liquid mixed fire extinguishing device according to claim 1, characterized in that: The outer impeller and the inner impeller (12) are both made of aluminum alloy.

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