阅读说明：本技术 一种中高倍数泡沫产生装置 (Medium-high multiple foam generating device ) 是由 陈冰冰 林涛 朱相武 猛凡刚 方晖 吴其玉 王鹏 于 2019-09-22 设计创作，主要内容包括：一种中高倍数泡沫产生装置,它包括离心风机和带支撑板的产生器壳体组成,所述产生器壳体内设有风管,所述风管由直管段和变径段组成,所述风管的变径段与离心风机通过风管软连接相连,并在连接处靠近离心风机的进风口位置设有电动风阀,所述风管变径段离进风口侧内部设有均匀气流用的布风网格,所述布风网格由多层水平和垂直方向的隔板组成,并且网格的之间尺寸大小相一致；它具有体积小、发泡效率高,泡沫能远距离输送,灭火能力更好,使中高倍数泡沫产生器能应用于更多的场所,创造良好的社会价值和经济效益。(A medium and high multiple foam generating device comprises a centrifugal fan and a generator shell with a supporting plate, wherein an air pipe is arranged in the generator shell and consists of a straight pipe section and a reducing section, the reducing section of the air pipe is connected with the centrifugal fan through an air pipe in a flexible connection mode, an electric air valve is arranged at the position, close to an air inlet of the centrifugal fan, of the connection position, an air distribution grid for uniform air flow is arranged inside the reducing section of the air pipe, away from the air inlet side, and consists of a plurality of layers of partition plates in the horizontal direction and the vertical direction, and the grids are consistent in size; the foam generator has the advantages of small volume, high foaming efficiency, long-distance foam delivery and better fire extinguishing capability, so that the medium and high multiple foam generator can be applied to more places, and good social value and economic benefit are created.)

1. A medium and high multiple foam generating device comprises a centrifugal fan and a generator shell with a supporting plate, and is characterized in that an air pipe is arranged in the generator shell and consists of a straight pipe section and a reducing section, the reducing section of the air pipe is connected with the centrifugal fan through an air pipe in a flexible connection manner, an electric air valve is arranged at the position, close to an air inlet of the centrifugal fan, of a connection part, an air distribution grid for uniform air flow is arranged inside the reducing section of the air pipe away from the air inlet, the air distribution grid consists of a plurality of layers of partition plates in the horizontal direction and the vertical direction, the size of the grids is consistent, a liquid inlet pipe penetrating through the generator shell and arranged in the generator shell is arranged at the lower part of the straight pipe section of the air pipe, an electric water valve is arranged at one end of the liquid inlet pipe outside the generator shell, and a spray nozzle is arranged at the end part of the liquid inlet, the sprayer is located on the central axis of the air pipe, the straight pipe section of the air pipe is connected with the air guide cylinder through angle steel flanges on the upper side and the lower side, the front end of the air guide cylinder is provided with a foaming net and is opposite to the spraying direction of the sprayer, and a pressure gauge is arranged above an outlet of the generator shell.

2. The apparatus according to claim 1, wherein the foaming net comprises one or two layers of continuously bent wire nets woven with a distance therebetween, and a fixing rod for fixing the wire nets is provided at the front ends of the bent wire nets and fixed in the generator housing.

3. The apparatus for generating middle and high expansion foam according to claim 1, wherein the driving of the centrifugal fan is controlled by means of an electric motor, a diesel engine or a hydraulic turbine.

4. The device for generating middle and high expansion foam according to claim 1, wherein the electrically operated water valve on the liquid inlet pipe, the electrically operated air valve on the centrifugal fan and the pressure gauge above the outlet of the generator housing are respectively connected with a control unit, and the control unit is arranged in the electric cabinet.

5. The medium and high multiple foam generating device according to claim 4, wherein the electric cabinet and the centrifugal fan are both disposed on the base.

Technical Field

The invention relates to the technical field of fire fighting equipment, in particular to a foam generator for a medium and high multiple foam fire extinguishing system.

Background

The medium and high multiple foam fire extinguishing technology is a mature fire extinguishing technology, is suitable for fighting class A and class B fires, limited closed space fires, and controlling drooling fires of liquefied petroleum gas and liquefied natural gas and the like. The blowing type foam generator in the prior medium and high multiple foam fire extinguishing device mostly adopts a pore plate or a cotton wire net as a foaming net, has larger volume and inconvenient installation, and the foam can not be conveyed in a long distance, so that the medium and high multiple foam fire extinguishing device needs to be placed in a fire prevention area or in a short distance, and is very inconvenient to use. Therefore, through the innovation of air supply mode and structure, the invention develops a medium and high multiple foam generator which has simple structure, small occupied space, high foaming efficiency and long-distance foam delivery, and is beneficial to the popularization and application of medium and high multiple foam fire extinguishing technology.

Disclosure of Invention

The invention aims to provide a medium and high multiple foam generator which has simple structure, small volume, small occupied space and high foaming efficiency.

In order to achieve the purpose, the invention adopts the technical scheme that: a medium and high multiple foam generating device comprises a centrifugal fan and a generator shell with a supporting plate, wherein an air pipe is arranged in the generator shell and consists of a straight pipe section and a reducing section, the reducing section of the air pipe is connected with the centrifugal fan through an air pipe in a flexible connection mode, an electric air valve is arranged at the position, close to an air inlet of the centrifugal fan, of a connection position, an air distribution grid for uniform air flow is arranged inside the reducing section of the air pipe, away from the air inlet side, the air distribution grid consists of a plurality of layers of partition plates in the horizontal direction and the vertical direction, the size of the grids is consistent, a liquid inlet pipe penetrating through the generator shell and arranged in the generator shell is arranged at the lower portion of the straight pipe section of the air pipe, an electric water valve is arranged at one end of the liquid inlet pipe outside the generator shell, a spray nozzle is arranged at the end portion, arranged outside the generator shell, of the other end of, the straight pipe section of the air pipe is connected with the air guide cylinder through angle steel flanges on the upper side and the lower side, a foaming net is arranged at the front end of the air guide cylinder and is opposite to the spraying direction of the spray head, and a pressure gauge is arranged above an outlet of the generator shell.

Preferably, the method comprises the following steps: the foaming net is formed by weaving one layer or two layers of continuously bent metal wire nets, a distance is reserved between the two layers of metal wire nets, a fixing rod used for fixing the metal wire nets is arranged at the front ends of the bent metal wire nets, and the fixing rod is fixed in a generator shell.

Preferably, the method comprises the following steps: the driving of the centrifugal fan can be controlled by a motor, a diesel engine, a hydraulic motor or a water turbine.

Preferably, the method comprises the following steps: the electric water valve on the liquid inlet pipe, the electric air valve on the centrifugal fan and the pressure gauge above the outlet of the generator shell are respectively connected with the control unit, and the control unit is arranged in the electric cabinet.

Preferably, the method comprises the following steps: the electric cabinet and the centrifugal fan are both arranged on the base.

The foam generator has the advantages of small volume, high foaming efficiency, long-distance foam delivery and better fire extinguishing capability, so that the medium and high multiple foam generator can be applied to more places, and good social value and economic benefit are created.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Detailed Description

Referring now to the drawings, the technical content of the present invention will be further described with reference to fig. 1, which shows a medium-high multiple foam generating apparatus, comprising a centrifugal fan 14 and a generator housing 2 with a support plate 1, wherein an air duct 18 is arranged in the generator housing 2, the air duct 18 is composed of a straight duct section 8 and a reducing section 11, the reducing section 11 of the air duct 18 is connected with the centrifugal fan 14 through an air duct flexible connection 13, an electric air valve 15 is arranged at an air inlet position of the centrifugal fan 14, an air distribution grid 12 for uniform air flow is arranged inside the reducing section 11 of the air duct 18 away from the air inlet side, the air distribution grid 12 is composed of multiple layers of partitions in horizontal and vertical directions, and the size of the grids is consistent, a liquid inlet pipe 10 penetrating through the generator housing 2 and arranged in the generator housing 2 is arranged at the lower part of the straight duct section 8 of the air duct 18, an electric water valve 17 is arranged at one end of the liquid inlet pipe 19 outside the generator housing 2, the other end of the generator shell 2 is provided with a spray head 9 at the end part arranged outside and inside the generator shell 2, the spray head 9 is positioned on the axis of an air pipe 18, a straight pipe section 8 of the air pipe 18 is connected with an air guide cylinder 6 through angle steel flanges 7 at the upper side and the lower side, the front end of the air guide cylinder 6 is provided with a foaming net 4 and is opposite to the spraying direction of the spray head 9, and a pressure gauge 5 is arranged above the outlet of the generator shell 2; the foaming net 4 is formed by weaving one or two layers of continuously bent metal wire nets, a distance is reserved between the two layers of metal wire nets, a fixing rod 3 for fixing the metal wire nets is arranged at the front ends of the bent metal wire nets, and the fixing rod 3 is fixed in the generator shell 2; the driving of the centrifugal fan 14 can be controlled by a motor, a diesel engine or a water turbine; the electric water valve 17 on the liquid inlet pipe 10, the electric air valve 15 on the centrifugal fan 14 and the pressure gauge 5 above the outlet of the generator shell 2 are respectively connected with a control unit, and the control unit is arranged in an electric cabinet 16; the electric cabinet 16 and the centrifugal fan 14 are both arranged on the base 19.

When fire occurs, the electric water valve 17 is opened, the external liquid supply pipeline pumps foam mixed liquid with pressure into the liquid inlet pipe 10, the centrifugal fan 14 is started, the pressure gauge 5 measures the air pressure at the outlet of the foam generator and feeds parameters back to the control unit, the control unit controls the opening of the electric air valve according to the air pressure parameters, the foam mixed liquid is sprayed to the foaming net 4 through the spray head 9 to form a film, and the centrifugal fan 14 supplies air to blow the film to form a large amount of foam to spray out to extinguish fire.

The number of the spray heads can be multiple, and each spray head can be correspondingly provided with an air duct and a foaming net. In the medium and high multiple foam fire extinguishing system, the centrifugal fan can adopt driving modes such as a motor, a hydraulic motor, a water turbine, a diesel engine and the like according to the field condition. If the hydraulic turbine is adopted for driving, the hydraulic turbine is driven by the foam mixed liquid with pressure, the centrifugal fan is started for air supply, the foam mixed liquid flowing out of the hydraulic turbine enters the spray head in the foam generator again for spraying, and a large amount of foam can be generated for fire extinguishing.

The foregoing detailed description is given by way of example only, and is provided to better enable one skilled in the art to understand the patent, and is not intended to limit the scope of the patent; any equivalent changes or modifications made according to the technical contents disclosed in the patent without departing from the technical characteristics of the patent are included in the scope of the patent.