CN2370893Y

CN2370893Y - Foam extinguishing device

Info

Publication number: CN2370893Y
Application number: CN 99223317
Authority: CN
Inventors: 蔡伟民
Original assignee: RONGCHANG FIRE FIGHTING EQUIPMENT ENGINEERING Co Ltd DALIAN BONDED AREA
Current assignee: RONGCHANG FIRE FIGHTING EQUIPMENT ENGINEERING Co Ltd DALIAN BONDED AREA
Priority date: 1999-03-30
Filing date: 1999-03-30
Publication date: 2000-03-29
Anticipated expiration: 2009-03-30

Abstract

The utility model relates to a foam fire extinguishing device. The utility model is composed of a foam storage tank 1, a pressure tank 3, a ventilating chamber 22, an injector 2, and a discharging pipe 4. A cross-shaped joint 5 is communicated with the foam storage tank 1, the pressure tank 3, and the discharging pipe 4. The ventilating chamber 22 is arranged inside the cross-shaped joint 5. The utility model has the advantages of simple structure and reasonable design. The utility model can complete fire extinguishing tasks.

Description

Fixed froth installation

The utility model relates to a kind of extinguishing device, particularly air is introduced the fixed froth installation in the foam solution.

The present foam ganerating unit that uses, adopt shower nozzle through particular design, complex structure, cost an arm and a leg, use this shower nozzle that air is introduced foam solution, foam solution and air mixture form foam in the front portion of nozzle, this specification requirement provides very high pressure that foam solution is extruded nozzle, and must use the nozzle of particular design.In addition, this foam ganerating unit comprises complicated heavy mechanical device, in fire extinguishing procedure, be difficult to motor-driven, maintenance difficult and costly.

It is a kind of simple to operate that the purpose of this utility model is to provide, and uses lower pressure promptly can produce the fixed froth installation of foam, and in addition, this device can be finished the air agitation of foam under the situation of the nozzle that does not use the process particular design.

The utility model is achieved in that a kind of fixed froth installation, and it is made of foam hold-up tank 1, propellant storage jar 3, draft chamber 22, injector 2, bleeder pipe 4, and foam hold-up tank 1 is an airtight container, and top is provided with port 8 and central ports 9; Foam hold-up tank 1, propellant are stored jar 3, bleeder pipe 4 is connected with 5 three connectors of " ten " shape joint 11,14,13 respectively; Another connector 12 of " ten " shape joint 5 also connects a pressure relief valve 18; Injector 2 comprises a receiving terminal, a release end, and receiving terminal is arranged in the foam hold-up tank 1, discharges end 3 and is arranged in the central ports 9 of foam hold-up tank 1; Be provided with draft chamber 22 in " ten " shape joint 5, draft chamber 22 is the tubular shell of the air vent 25 that distributes all around, is arranged in the release end of injector 2; Bleeder pipe 4 comprises flexible pipe 26, control valve 20 and nozzle 21, and is communicated with 22 tops, draft chamber in being located at " ten " shape joint 5 by bend pipe 19.

The utility model is simple in structure, and is reasonable in design, easy to use, cheap, can finish fire-extinguishing function concurrently well.

The utility model is described in further detail now to reach embodiment in conjunction with the accompanying drawings.

Fig. 1 is the utility model structural representation.

Fig. 2 is the partial view of Fig. 1.

As shown in Figure 1, 2, the utility model comprises foam hold-up tank 1, and injector 2, propellant are stored jar 3, bleeder pipe 4, " ten " shape joint 5 and draft chamber 22.Foam hold-up tank 1 is an airtight container, is made up of impermeable material, can conveniently preserve the foam solution that is housed in wherein.The bottom of container 1 is provided with a seat 6, and the fire type that the kind of the foam solution of dress is put out as required in the container 1 determines that container 1 is provided with liquid level display unit 7.Container 1 top is provided with two seal heads, and one is to be used for the port 8 of packing foam solution into or foam solution being discharged, and another seal head is a central ports 9, is used for connecting injector 2.Injector 2 bottoms are fixtures 10, injector 2 can be installed in the container 1.

" ten " shape joint 5 is connected respectively with four

connectors

11,12,13,14, connector 14 is connected with flexible pipe 15, flexible pipe 15 is stored jar 3 by adjuster 16 and pressure valve 17 with propellant and is connected, and it is a pressurized tank that propellant is stored jar 3, to container 1 pressurization.Pressurized tank 3 can comprise following gas, for example nitrogen, carbon dioxide, kelene, compressed air etc. make container inner foam liquid be in the environment of continuous high pressure, use conventional water pump pipeline, for example the Flexible water pipe of fire fighting truck is connected on the flexible pipe 15 and can pressurizes to container 1.

A connector 12 of " ten " shape joint 5 is connected on the pressure relief valve 18, and connector 13 links to each other with elbow 19, is connected with bleeder pipe 4 afterwards, and foam ejects by nozzle 21 at last from bleeder pipe 4 control valve 20 of releasing.Control valve 20 and nozzle 21 belong to conventional equipment.

In " ten " shape joint 5, be provided with draft chamber 22, its underpart is that a tubular portion 24 is connected with injector 2, its top is for to be connected with connector 13 by part 23, and the diameter of part 23 is passed through greater than lower tubular part 24 in top, the intermediate section that reaches all around of 22 tubular portion 24 is furnished with air vent 25 in the draft chamber, the function of air vent 25 is that propellant or air are incorporated in the foam solution that flows between container 1 bleeder pipe 4, makes foam solution fully stir the generation foam.

During the work of this fixed froth installation,, enter " ten " shape joint 5 from the source of the gas ejection, and flow along arrow 27 direction indications as compressed air or other Compressed Gas of propellant.And flow through path 28, this path is between the tubular portion 24 of central ports 9 and draft chamber 22, the flow direction of propellant in container 1 is as shown in arrow 29, when propellant constantly enters container 1, pressure in the container 1 constantly increases, force foam solution press arrow 30 directions by injector 2, draft chamber 22 pass through part 23, arrive bleeder pipe 4 at last.

Propellant from pressurized tank 3, also be blended in bend pipe 19 with the foam solution that from container 1, flows out and produce air or gas solutions by flow through air vent 25 in the draft chamber 22 of the direction of arrow 31, direction along arrow 32 indications flows, then enter bleeder pipe 4, in bleeder pipe 4, fully stirred and recovered normal pressure form foam, released away by nozzle 21 at last.The size of bleeder pipe 4 can be selected according to required foam volume, also can utilize single propellant source to drive foam solution flow container 1, and stirs foam solution and produce air, because the existence of air vent 25, makes it in the draft chamber 22 and is fully stirred.The size and the quantity of air vent 25 determine according to expansion factor.

This cover fixed froth installation can be fixed on the moving vehicle, and for example fire fighting truck provides power with conventional fire hose connection by fire pump.The connector 14,13 of " ten " shape joint 5 can be directly connected on the fire hose, and connector 12 should be closed.

Claims

1, a kind of fixed froth installation is characterized in that: it stores jar [3], draft chamber [22], injector [2], bleeder pipe [4] formation by foam hold-up tank [1], propellant, and foam hold-up tank [1] is an airtight container, and top is provided with port [8] and central ports [9]; Foam hold-up tank [1], propellant are stored jar [3], bleeder pipe [4] is connected with " ten " shape [5] three connectors of joint [11] [14] [13] respectively; Another connector [12] of " ten " shape joint [5] also connects a pressure relief valve [18]; Injector [2] comprises a receiving terminal, a release end, and receiving terminal is arranged in the foam hold-up tank [1], discharges end [3] and is arranged in the central ports [9] of foam hold-up tank [1]; Be provided with draft chamber [22] in " ten " shape joint [5], draft chamber [22] are the tubular shell of air vent [25] that distribute all around, are arranged in the release end of injector [2]; Bleeder pipe [4] comprises flexible pipe [26], control valve [20] and nozzle [21], and is communicated with by bend pipe [19] top, draft chamber [22] interior with being located at " ten " shape joint [5].

2, fixed froth installation according to claim 1 is characterized in that: draft chamber [22] are two ends diameter difference up and down, corresponds to big end and small end respectively.

3, fixed froth installation according to claim 1 is characterized in that: it is a pressurized tank that propellant is stored jar [3], and propellant is housed in it, and pressurized tank [3] is communicated with " ten " shape joint [5] by flexible pipe [15].

4, fixed froth installation according to claim 3 is characterized in that: be provided with adjuster [16] and pressure valve [17] on the flexible pipe [15] between pressurized tank [3] and " ten " shape joint [5].