Movable pressurized nitrogen fire extinguishing device

Abstract

The utility model provides a movable pressurized nitrogen fire extinguishing device which comprises a movable trailer body, and a nitrogen inlet assembly, a nitrogen compression assembly, a nitrogen storage tank and an injection cylinder assembly which are arranged on the movable trailer body, and the nitrogen inlet assembly comprises a nitrogen hose, a hose reel, an air inlet switch valve and an air inlet check valve; the nitrogen hose is wound on the hose reel, one end of the nitrogen hose is connected with a nitrogen compression device through an air inlet check valve, the other end of the nitrogen hose is connected with an air inlet switch valve and used for being connected with an external nitrogen source through the air inlet switch valve, and the nitrogen compression assembly comprises a nitrogen compressor. A gas outlet of the nitrogen compressor is connected with a nitrogen storage tank, a nitrogen outlet valve is arranged at the top of the nitrogen storage tank, and the nitrogen storage tank is connected with the injection cylinder assembly through the nitrogen outlet valve. According to the utility model, the requirements of dangerous chemical production enterprises on environmental safety during fire treatment are met, and the fire extinguishing capability is stronger.

Description

TECHNICAL FIELD

[0001] The utility model relates to a fire extinguishing device, concretely relates to a mobile pressurized nitrogen fire extinguishing device and belongs to the technical field. BACKGROUND

[0002] At present, the production process of most petrochemical enterprises is in a high-temperature and high-pressure state, the operating environment is complex, and it is necessary to strictly prevent safety accidents such as leakage, fire, explosion, etc., which also puts forward higher requirements for chemical fire fighting technology. In the existing fire fighting equipment, although the commonly used hand-held dry powder fire extinguisher can extinguish fire by using basic mechanisms such as suffocation, cooling, chemical inhibition, and isolation, its fire extinguishing area is relatively limited, the maintenance workload is large, regular charging and detection are often required, and it is a disposable product, which must be replaced or recharged after use, which brings inconvenience to emergency rescue and daily maintenance. In addition, the traditional fire extinguisher often cannot achieve continuous and efficient fire extinguishing when facing a fire scene with scattered fire sources or complex fire, which is particularly prominent in the factory area of a petrochemical enterprise.

[0003] Therefore, how to provide a fire extinguishing device that not only meets the environmental safety requirements of hazardous chemical production enterprises during the fire handling process, but also has strong fire extinguishing capability, and can be flexibly moved according to the fire source, significantly improving the application range of the existing fire extinguisher in the factory area of a petrochemical enterprise, is a technical problem to be solved in the field. SUMMARY

[0004] Based on the above background, the purpose of the utility model is to provide a mobile pressurized nitrogen fire extinguishing device to solve the problems in the background art.

[0005] In order to achieve the above-mentioned utility model purposes, the utility model provides the following technical scheme:

[0006] A mobile pressurized nitrogen fire extinguishing device, comprising a movable trailer body and a nitrogen gas inlet assembly, a nitrogen gas compression assembly, a nitrogen gas storage tank and a jet cylinder assembly arranged on the movable trailer body, the nitrogen gas inlet assembly comprising a nitrogen gas hose, a hose reel, an inlet switch valve and an inlet check valve, the nitrogen gas hose being wound on the hose reel, one end of the nitrogen gas hose being connected to the nitrogen gas compression device through the inlet check valve, the other end of the nitrogen gas hose being connected to the inlet switch valve and being used to connect an external nitrogen source through the inlet switch valve, the nitrogen gas compression assembly comprising a nitrogen gas compressor, a gas inlet of the nitrogen gas compressor being connected to the nitrogen gas hose, a gas outlet of the nitrogen gas compressor being connected to the nitrogen gas storage tank, the nitrogen gas storage tank being a closed pressure container, a nitrogen gas outlet valve being arranged at the top of the nitrogen gas storage tank, the nitrogen gas storage tank being connected to the jet cylinder assembly through the nitrogen gas outlet valve.

[0007] As preferred, the movable trailer body comprises a frame and a plurality of wheels hinged to the frame, and the bottom of the frame is further provided with support rods.

[0008] As preferred, the nitrogen compressor is a piston gas compressor.

[0009] As preferred, the nitrogen compressor assembly further comprises a backup power supply, which is electrically connected with the piston gas compressor.

[0010] As preferred, the top of the nitrogen storage tank is further provided with a pressure gauge and a safety valve.

[0011] As preferred, the surface of the hose reel is provided with a groove for accommodating the wound nitrogen hose.

[0012] Compared with the prior art, the mobile pressurized nitrogen fire extinguishing device has the following advantages:

[0013] The mobile pressurized nitrogen fire extinguishing device adopts pressurized nitrogen as the fire extinguishing medium, does not need to use chemical fire extinguishing agent, meets the requirements of the environment safety of the hazardous chemical production enterprise in fire handling, has strong fire extinguishing capacity, is convenient to maintain, can be used by connecting an external nitrogen source, and thus can be used repeatedly, has a wide application range, and can be moved according to the fire source point, and is particularly suitable for fire extinguishing in the factory area of the petrochemical enterprise. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only the embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative labor.

[0015] Figure 1 is a structural schematic view of a mobile pressurized nitrogen fire extinguishing device of the present application;

[0016] In the figure: 1, frame; 2, wheel; 3, support rod; 4, caster; 5, nitrogen hose; 6, hose reel; 7, inlet valve; 8, inlet check valve; 9, nitrogen compressor; 10, backup power supply; 11, nitrogen storage tank; 12, nitrogen outlet valve; 13, pressure gauge; 14, safety valve; 15, injection cylinder assembly. DETAILED DESCRIPTION

[0017] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings. It should be understood that the implementation of this utility model is not limited to the following embodiments, and any modifications and / or alterations made to this utility model will fall within the protection scope of this utility model.

[0018] In this invention, unless otherwise specified, all parts and percentages are by weight, and the equipment and raw materials used are commercially available or commonly used in the field. Unless otherwise specified, the methods in the following embodiments are conventional methods in the field. Unless otherwise specified, the components or equipment in the following embodiments are general standard parts or components known to those skilled in the art, and their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0019] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the following detailed description, many specific details are set forth to facilitate explanation and provide a comprehensive understanding of the embodiments of the present invention. However, one or more embodiments may be practiced by those skilled in the art without these specific details.

[0020] An embodiment of this utility model discloses a mobile pressurized nitrogen fire extinguishing device, such as... Figure 1 As shown, the fire extinguishing device includes a movable trailer body and a nitrogen inlet assembly, a nitrogen compression assembly, a nitrogen storage tank 11, and a spray nozzle assembly 15, all mounted on the movable trailer body.

[0021] The movable trailer includes a frame 1 and two wheels 2 hinged to one end of the frame 1. A support rod 3 is also provided at the bottom of the frame 1. Furthermore, for balance, two casters 4 are hinged to the frame 1 at the other end. The heights of the wheels 2, casters 4, and support rod 3 are adaptively designed to facilitate movement and subsequent fixation of the frame 1. The casters 4 and support rod 3 are located on either side of the wheels 2, with the lowest point of the wheels 2 lower than the lowest points of the casters 4 and support rod 3. Thus, when the frame 1 needs to be moved, tilting the frame 1 causes the casters 4 and wheels 2 to simultaneously touch the ground, allowing the frame 1 to be towed. When the desired position is reached, tilting the frame 1 in the opposite direction causes the wheels 2 and support rod 3 to simultaneously touch the ground. Because the support rod 3 is in non-rolling contact with the ground, the frame 1 cannot move, thereby limiting its relative position to the ground.

[0022] The nitrogen intake assembly includes a nitrogen hose 5, a hose reel 6, an intake switch valve 7, and an intake check valve 8. The nitrogen hose 5 is wound around the hose reel 6, and the surface of the hose reel 6 has grooves for accommodating the wound nitrogen hose 5. One end of the nitrogen hose 5 is connected to a nitrogen compression device through the intake check valve 8, and the other end of the nitrogen hose 5 is connected to the intake switch valve 7, which is used to connect to an external nitrogen source.

[0023] The nitrogen compression assembly comprises a nitrogen compressor 9, the gas inlet of the nitrogen compressor 9 is connected with the nitrogen hose 5, and the gas outlet of the nitrogen compressor 9 is connected with the nitrogen storage tank 11. The nitrogen compressor 9 is a piston gas compressor, the structure of which is known in the prior art, and it can compress gas under the drive of electricity to increase the pressure of the gas, and the specific structure is not described here. In order to deal with the situation that the power connection is not convenient, the nitrogen compression assembly further comprises a backup power supply 10, which is a charging power supply, and the backup power supply 10 is electrically connected with the piston gas compressor.

[0024] The nitrogen storage tank 11 is a closed pressure container, and the top of the nitrogen storage tank 11 is provided with a nitrogen gas outlet valve 12, and the nitrogen storage tank 11 is connected with the spray cylinder assembly 15 through the nitrogen gas outlet valve 12. In order to improve safety, the top of the nitrogen storage tank 11 is also provided with a pressure gauge 13 and a safety valve 14. If the pressure gauge 13 shows that the pressure in the nitrogen storage tank 11 approaches the set safety threshold, the safety valve 14 is opened to release pressure.

[0025] The spray cylinder assembly 15 is in the shape of a cylinder, so that the nitrogen gas with pressure is sprayed out. The spray cylinder assembly 15 in this embodiment adopts a straight cylinder, and the spray port is a shrinkage structure to further improve the distance of nitrogen gas spraying.

[0026] When the mobile pressurized nitrogen fire extinguishing device is used, the movable trailer body is moved to the required position, then the nitrogen hose 5 is unwound from the hose reel 6, the end of the nitrogen hose 5 connected with the inlet switch valve 7 is connected with the external nitrogen source (the nitrogen pipeline interface in the factory area), after ensuring that the connection is in place, the inlet switch valve 7 is opened, the power supply of the nitrogen compression assembly is turned on, the nitrogen compression assembly is started, the reciprocating piston in the cylinder of the nitrogen compression assembly moves to pressurize the nitrogen, the pressurized nitrogen enters the nitrogen storage tank 11 for storage, and the pressure in the nitrogen storage tank 11 is observed through the pressure gauge 13. When the pressure reaches 0.6 MPa or above, the spray cylinder assembly 15 is aimed at the fire source, and the nitrogen gas outlet valve 12 is opened to extinguish the fire.

[0027] The mobile pressurized nitrogen fire extinguishing device uses pressurized nitrogen as the extinguishing medium, without using chemical extinguishing agents, which not only meets the environmental safety requirements of dangerous chemical production enterprises in fire handling, but also has strong fire extinguishing ability. The mobile pressurized nitrogen fire extinguishing device has high maintenance convenience, can be used by connecting with an external nitrogen source, and can be used repeatedly, so it has a wide range of applications and can be moved according to the fire source. It is especially suitable for fire extinguishing in the factory area of petrochemical enterprises.

[0028] The principle and implementation mode of the present application are described by using specific examples in the present application, and the above examples are only used for helping to understand the method and core idea of the present application. It should be pointed out that, for ordinary skilled persons in the technical field, some improvements and modifications can be made to the present application without departing from the principle of the present application, and these improvements and modifications also fall within the protection scope of the present application.

Claims

1. A mobile pressurized nitrogen fire extinguishing apparatus, characterized by: The mobile pressurized nitrogen fire extinguishing device comprises a mobile trailer body, a nitrogen inlet assembly, a nitrogen compression assembly, a nitrogen storage tank (11) and a spray cylinder assembly (15) arranged on the mobile trailer body, the nitrogen inlet assembly comprises a nitrogen hose (5), a hose reel (6), an inlet switch valve (7) and an inlet check valve (8), the nitrogen hose (5) is wound on the hose reel (6), one end of the nitrogen hose (5) is connected to the nitrogen compression device through the inlet check valve (8), the other end of the nitrogen hose (5) is connected to the inlet switch valve (7) and is used for connecting an external nitrogen source through the inlet switch valve (7), the nitrogen compression assembly comprises a nitrogen compressor (9), a gas inlet of the nitrogen compressor (9) is connected to the nitrogen hose (5), a gas outlet of the nitrogen compressor (9) is connected to the nitrogen storage tank (11), the nitrogen storage tank (11) is a closed pressure container, a nitrogen outlet valve (12) is arranged on the top of the nitrogen storage tank (11), the nitrogen storage tank (11) is connected to the spray cylinder assembly (15) through the nitrogen outlet valve (12).

2. A mobile pressurized nitrogen gas fire extinguishing device according to claim 1, characterized in that: The mobile trailer body comprises a frame (1) and a plurality of wheels (2) hinged to the frame (1), and the bottom of the frame (1) is further provided with a support rod (3).

3. The mobile pressurized nitrogen gas fire extinguishing device of claim 1, wherein: The nitrogen compressor (9) is a piston gas compressor.

4. The mobile pressurized nitrogen gas fire extinguishing apparatus of claim 1, wherein: The nitrogen compression assembly further comprises a backup power supply (10) electrically connected to the piston gas compressor.

5. The mobile pressurized nitrogen gas fire extinguishing apparatus of claim 1, wherein: The top of the nitrogen storage tank (11) is further provided with a pressure gauge (13) and a safety valve (14).

6. The mobile pressurized nitrogen gas fire extinguishing apparatus of claim 1, wherein: The surface of the hose reel (6) is provided with a groove for accommodating the wound nitrogen hose (5). The surface of the hose reel (6) is provided with a groove for accommodating the wound nitrogen hose (5).

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