CN111330189A - Antiknock type foam spraying fire extinguishing system - Google Patents

Antiknock type foam spraying fire extinguishing system Download PDF

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CN111330189A
CN111330189A CN202010221505.6A CN202010221505A CN111330189A CN 111330189 A CN111330189 A CN 111330189A CN 202010221505 A CN202010221505 A CN 202010221505A CN 111330189 A CN111330189 A CN 111330189A
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pipe
fire
sealing ring
extinguishing system
foam
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CN111330189B (en
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陈涛
胡成
包志明
陈旸
夏建军
靖立帅
张宪忠
王荣基
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Tianjin Fire Research Institute of MEM
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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
    • A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C31/00—Delivery of fire-extinguishing material
    • A62C31/02—Nozzles specially adapted for fire-extinguishing
    • A62C31/12—Nozzles specially adapted for fire-extinguishing for delivering foam or atomised foam
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C31/00—Delivery of fire-extinguishing material
    • A62C31/28—Accessories for delivery devices, e.g. supports

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  • Public Health (AREA)
  • Business, Economics & Management (AREA)
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  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)

Abstract

本发明公开了一种抗爆型泡沫喷雾灭火***。***包括消防泵组、储液罐、泡沫比例混合器、供液管网、水平管道、压力伸缩管、水雾喷头。本发明采用可伸缩隐藏布置的方式，显著提升了灭火***的可靠性。压力伸缩管采取多级密封结构，解决了易漏液、误动、不动、适用压力范围小等问题。采用多节压力伸缩管，将水雾喷头贴近着火对象喷放，解决了现有水雾喷头射程近、贯穿力不足、易受环境风和火羽流影响的问题。本发明具有抗爆、防尘、耐高温功能，安全可靠，灭火效能高，喷雾时间长，安装使用方便，对保护对象影响小，适用于扑救带电油浸变压器火灾，有效解决了大型油浸变压器火灾扑救技术难题，既可用于在运油浸变压器，也可用于新建油浸变压器。

Figure 202010221505

The invention discloses an anti-explosive foam spray fire-extinguishing system. The system includes a fire pump group, a liquid storage tank, a foam proportioning mixer, a liquid supply pipe network, a horizontal pipe, a pressure expansion pipe, and a water mist nozzle. The invention adopts a retractable hidden arrangement, which significantly improves the reliability of the fire extinguishing system. The pressure expansion tube adopts a multi-stage sealing structure, which solves the problems of easy liquid leakage, misoperation, immobility, and small applicable pressure range. The multi-section pressure telescopic tube is used to spray the water mist nozzle close to the fire object, which solves the problems of the existing water mist nozzle with short range, insufficient penetration force, and being easily affected by environmental wind and fire plume. The invention has anti-explosion, dust-proof and high-temperature resistance functions, is safe and reliable, has high fire-extinguishing efficiency, long spraying time, is convenient to install and use, has little impact on the protected object, is suitable for fighting live oil-immersed transformer fires, and effectively solves the problem of large-scale oil-immersed transformers. The technical problems of fire fighting can be used not only for oil-immersed transformers in transit, but also for new oil-immersed transformers.

Figure 202010221505

Description

一种抗爆型泡沫喷雾灭火***An anti-explosive foam spray fire extinguishing system

技术领域technical field

本发明涉及固定灭火***，尤其涉及一种抗爆型泡沫喷雾灭火***。The invention relates to a fixed fire extinguishing system, in particular to an anti-explosion foam spray fire extinguishing system.

背景技术Background technique

近年来，随着我国社会经济的高速发展以及输配电技术的更新换代，涌现出一批大型油浸变压器。然而，由于大型油浸变压器的电压等级高、能量大、储油量多、运行温度高，发生***起火风险高、危害大、扑救困难，一旦发生火灾，会造成重大经济财产损失，严重影威胁电网的安稳运行。因此，大型油浸变压器应采取有效的消防安全防护措施。In recent years, with the rapid development of my country's social economy and the upgrading of power transmission and distribution technology, a number of large oil-immersed transformers have emerged. However, due to the high voltage level, large energy, large oil storage, and high operating temperature of large oil-immersed transformers, the risk of explosion and fire is high, the harm is large, and the rescue is difficult. stable operation of the power grid. Therefore, large-scale oil-immersed transformers should take effective fire safety protection measures.

固定灭火***是及时扑灭初期火灾、最大限度降低火灾损失的最有效手段之一。目前，用于大型油浸变压器的固定灭火***主要是水喷雾灭火***、泡沫喷雾灭火***等，实际工程应用时均贴近变压器设置，故此受变压器***、火灾、高温等因素影响较大。当大型油浸变压器发生***起火时，被炸飞的零部件以及***冲击波会损毁临近的消防支管和喷头，进而导致整套固定灭火***失效，具体来说：Fixed fire extinguishing system is one of the most effective means to extinguish the initial fire in time and minimize fire losses. At present, the fixed fire extinguishing systems for large oil-immersed transformers are mainly water spray fire extinguishing systems, foam spray fire extinguishing systems, etc., which are set close to the transformer in practical engineering applications, so they are greatly affected by factors such as transformer explosion, fire, and high temperature. When a large oil-immersed transformer explodes and catches fire, the blasted parts and the blast shock wave will damage the adjacent fire branch pipes and sprinklers, thereby causing the failure of the entire fixed fire extinguishing system. Specifically:

（1）被炸毁的水喷雾喷头、泡沫喷雾喷头等将直接失效。由于水喷雾、泡沫喷雾等灭火***均是依靠末端喷头形成有效喷雾进行灭火，当喷头被炸毁或炸飞后，将无法形成有效的喷雾，故而直接失效。并且，越是靠近***位置的喷头越易被炸毁，从而导致***点周围火灾区域最需要灭火的位置无法形成有效喷雾进行灭火。(1) The blasted water spray nozzles, foam spray nozzles, etc. will directly fail. Since the fire extinguishing systems such as water spray and foam spray rely on the effective spray formed by the end nozzle to extinguish the fire, when the nozzle is blown up or blown up, it will not be able to form an effective spray, so it will fail directly. In addition, the closer the sprinkler head is to the explosion location, the more likely it is to be blown up, resulting in the inability to form an effective spray to extinguish the fire at the location where the fire area around the explosion point most needs to be extinguished.

（2）部分喷头损毁后将损耗浪费掉大量消防水或泡沫混合液，严重影响其它剩余喷头的喷雾效果。由于水雾喷头和泡沫喷雾喷头内部流通通径远小于入口内径，当部分喷头被损毁后，与其连接的支管将成为泄流口或泄压口，造成大量消防水或泡沫溶液从该处流出，整套固定灭火***失压，其它剩余未被损毁的喷头也无法达到设计压力和形成有效的喷雾，故而导致整套固定灭火***失效。(2) After some nozzles are damaged, a large amount of fire fighting water or foam mixture will be wasted, which will seriously affect the spraying effect of other remaining nozzles. Since the internal circulation diameter of the water mist nozzle and the foam nozzle is much smaller than the inner diameter of the inlet, when part of the nozzle is damaged, the branch pipe connected to it will become a drain or pressure relief port, causing a large amount of fire water or foam solution to flow out from there. The entire fixed fire extinguishing system loses pressure, and other remaining undamaged sprinklers cannot reach the design pressure and form an effective spray, thus causing the entire fixed fire extinguishing system to fail.

（3）火灾高温会导致消防支管变形，从而导致***无法完全包络防护对象而失效，严重影响灭火效果。(3) The high temperature of the fire will cause the deformation of the fire branch pipe, which will cause the system to fail to completely envelop the protection object, which will seriously affect the fire extinguishing effect.

由此可见，现有大型油浸变压器固定灭火***易受***、火灾高温影响，无法满足其火灾扑救需求，存在很大消防安全隐患，急需有效的固定灭火措施。It can be seen that the existing large-scale oil-immersed transformer fixed fire-extinguishing system is susceptible to explosion and high temperature of fire, and cannot meet its fire-fighting needs.

发明内容SUMMARY OF THE INVENTION

鉴于现有灭火方案的不足，本发明提供一种可伸缩隐藏布置的抗爆型泡沫喷雾灭火***，可有效扑灭油浸变压器火灾，具有灭火效能高、安全可靠的特点，解决了大型油浸变压器灭火难题。In view of the shortcomings of the existing fire extinguishing schemes, the present invention provides an anti-explosion foam spray fire extinguishing system with retractable hidden arrangement, which can effectively extinguish the fire of oil-immersed transformers, has the characteristics of high fire-extinguishing efficiency, safety and reliability, and solves the problem of large-scale oil-immersed transformers. Fire fighting problem.

本发明所采取的技术方案是：一种抗爆型泡沫喷雾灭火***，其特征在于，包括消防泵组、储液罐、泡沫比例混合器、供液管网、水平管道、压力伸缩管、水雾喷头，所述消防泵组进口与消防水源连通，消防泵组出口通过泡沫比例混合器与供液管网进口连通，供液管网出口分别连通若干水平管道，每个水平管道上设有数个安装有水雾喷头的压力伸缩管；所述泡沫比例混合器与储液罐连通。The technical scheme adopted in the present invention is: an anti-explosion foam spray fire extinguishing system, which is characterized in that it includes a fire pump group, a liquid storage tank, a foam proportioning mixer, a liquid supply pipe network, a horizontal pipe, a pressure expansion pipe, a water Mist nozzle, the inlet of the fire pump group is connected with the fire water source, the outlet of the fire pump group is connected with the inlet of the liquid supply pipe network through the foam proportioning mixer, and the outlet of the liquid supply pipe network is respectively connected with several horizontal pipes, each horizontal pipe is provided with several A pressure telescopic tube with a water mist spray head is installed; the foam proportioning mixer is communicated with a liquid storage tank.

本发明所述压力伸缩管包括外管、内管，所述内管设于外管内部，所述外管进水端与水平管道的接口连通，外管出水端内部依次设有环形凹槽、第一密封圈、第二密封圈；所述内管一端为密封端，依次设有第三密封圈、进水孔、第四密封圈，内管另一端为出水端与水雾喷头连通。The pressure telescopic pipe of the present invention comprises an outer pipe and an inner pipe, the inner pipe is arranged inside the outer pipe, the water inlet end of the outer pipe is communicated with the interface of the horizontal pipe, and the water outlet end of the outer pipe is sequentially provided with annular grooves, a first sealing ring and a second sealing ring; one end of the inner pipe is a sealing end, and a third sealing ring, a water inlet hole and a fourth sealing ring are arranged in sequence;

本发明所述压力伸缩管在缩的状态下，内管的密封端、第三密封圈和进水孔完全***外管内，由第三密封圈分隔为左右两部分，左侧部分与水平管道、供液管网连通，右侧部分与水雾喷头和外界连通；压力伸缩管在伸展状态下，所述内管的密封端、第三密封圈和进水孔右移至外管的环形凹槽内，外管出水端与内管之间通过第一密封圈、第二密封圈和第四密封圈完全密闭。When the pressure telescopic tube of the present invention is in a retracted state, the sealing end of the inner tube, the third sealing ring and the water inlet hole are completely inserted into the outer tube, and are divided into left and right parts by the third sealing ring, and the left part is connected to the horizontal pipe, The liquid supply pipe network is connected, and the right part is connected with the water mist nozzle and the outside world; when the pressure expansion pipe is in an extended state, the sealing end of the inner pipe, the third sealing ring and the water inlet hole move right to the annular groove of the outer pipe The first sealing ring, the second sealing ring and the fourth sealing ring are completely sealed between the water outlet ends of the inner and outer pipes and the inner pipe.

本发明所述水雾喷头采用多喷嘴组合式水雾喷头。The water mist nozzle of the present invention adopts a multi-nozzle combined water mist nozzle.

本发明所述泡沫比例混合器采用机械泵入式泡沫比例混合器或计量注入式泡沫比例混合器任意一种。The foam proportioning mixer of the present invention adopts any one of a mechanical pumping type foaming proportioning mixer or a metering injection type foaming proportioning mixer.

本发明所述储液罐为常压罐，采用耐腐蚀高分子材料或不锈钢制作。The liquid storage tank of the present invention is a normal pressure tank, which is made of corrosion-resistant polymer material or stainless steel.

本发明的工作原理：日常，灭火***处于待机状态，压力伸缩管5处于缩的状态，水平管道3、压力伸缩管5和水雾喷头4一并隐藏在槽钢10，并由防护盖11遮盖，不受灰尘、烟气、高温、***冲击等影响。当油浸变压器发生***起火时，火灾报警***探测到火灾或者值班人员发现火灾时，立即自动或手动启动灭火***，按照预设的流量和压力经管道向各组合式水雾喷头供泡沫混合液，消防泵组6和泡沫比例混合器2开始向供液管网12、水平管道3及压力伸缩管5供液，压力伸缩管5的内管5-2受压后迅速向右移动，内管5-2连同水雾喷头4一并从槽钢10内伸出，防护盖11受水雾喷头4冲击后自由脱落，泡沫混合液经外管5-1环形凹槽5-1-1与内管5-2密封端之间的环隙进入进水孔5-2-2，再从内管5-2内部通道进入水雾喷头4进行释放，以雾化形态包络变压器进行冷却降温，同时迅速在油面上形成一层水膜和乳化层，使变压器油与空气隔绝而快速灭火，并防止火灾复燃。The working principle of the present invention: in daily life, the fire extinguishing system is in a standby state, the pressure expansion pipe 5 is in a retracted state, the horizontal pipe 3, the pressure expansion pipe 5 and the water mist nozzle 4 are hidden in the channel steel 10 and covered by the protective cover 11. , not affected by dust, smoke, high temperature, explosion shock, etc. When the oil-immersed transformer explodes and catches fire, when the fire alarm system detects the fire or the on-duty personnel finds the fire, the fire extinguishing system is automatically or manually activated immediately, and the foam mixture is supplied to each combined water mist nozzle through the pipeline according to the preset flow and pressure. , the fire pump group 6 and the foam proportioning mixer 2 start to supply liquid to the liquid supply pipe network 12, the horizontal pipe 3 and the pressure expansion pipe 5, the inner pipe 5-2 of the pressure expansion pipe 5 moves to the right quickly after being pressurized, and the inner pipe 5-2 together with the water mist nozzle 4 protrudes from the channel steel 10, the protective cover 11 falls off freely after being impacted by the water mist nozzle 4, and the foam mixture passes through the annular groove 5-1-1 of the outer pipe 5-1 and the inner The annular gap between the sealed ends of the pipe 5-2 enters the water inlet hole 5-2-2, and then enters the water mist nozzle 4 from the inner channel of the inner pipe 5-2 for release, and envelops the transformer in the form of atomization for cooling and cooling. Quickly form a layer of water film and emulsification layer on the oil surface, isolate the transformer oil from the air and quickly extinguish the fire, and prevent the fire from re-ignition.

本发明的有益效果是：The beneficial effects of the present invention are:

1、本发明采用可伸缩隐藏布置的方式，将水雾喷头及消防支管保护起来，不受火灾高温、***冲击、灰尘、烟气等影响，显著提升了灭火***在特殊环境中的可靠性，比现有技术具有突出进步。1. The present invention adopts a retractable and hidden arrangement to protect the water mist nozzle and the fire branch pipe, and is not affected by the high temperature of the fire, explosion shock, dust, smoke, etc., which significantly improves the reliability of the fire extinguishing system in special environments. Significant progress over the existing technology.

2、本发明压力伸缩管通过采取多级密封结构，解决了易漏液、误动、不动、适用压力范围小等诸多问题，极大提高了使用可靠性高和适用范围，具有显著技术进步。2. By adopting a multi-stage sealing structure, the pressure expansion tube of the present invention solves many problems such as easy liquid leakage, misoperation, immobility, and small applicable pressure range, greatly improves the high reliability of use and the scope of application, and has significant technical progress .

3、本发明采用两节或多节压力伸缩管，可在火灾情况下将水雾喷头尽可能的贴近着火对象喷放，解决了现有水雾喷头射程近、贯穿力不足、易受环境风和火羽流影响的问题，显著提高了***灭火能力。3. The present invention adopts two or more pressure expansion tubes, which can spray the water mist nozzle as close as possible to the fire object under fire conditions, and solves the problem that the existing water mist nozzle has a short range, insufficient penetration force, and is vulnerable to environmental wind. and fire plume effects, significantly improving the system's ability to extinguish fires.

4、本发明采用泡沫比例混合器现混的方式，即使泡沫液用完后，还可以通过消防泵站继续供相同流量的消防水，持续喷射水雾进行冷却降温，解决了现有常规泡沫喷雾灭火***泡沫混合液储存期短、储存量有限，无法满足大型油浸变压器长时间持续供泡的灭火需求。4. The present invention adopts the method of mixing the foam proportioning mixer, even after the foam liquid is used up, the fire pump station can continue to supply the same flow of fire water, and spray water mist continuously for cooling and cooling, which solves the problem of the existing conventional foam spray. The foam mixture of the fire extinguishing system has a short storage period and limited storage capacity, which cannot meet the long-term continuous foam fire extinguishing needs of large oil-immersed transformers.

5、本发明具有抗爆、防尘、耐高温功能，安全可靠，灭火效能高，喷雾时间长，安装使用方便，对保护对象影响小，适用于扑救带电油浸变压器火灾，有效解决了大型油浸变压器火灾扑救技术难题，既可用于在运油浸变压器，也可以用于新建油浸变压器。5. The invention has the functions of anti-explosion, dust-proof and high-temperature resistance, is safe and reliable, has high fire-extinguishing efficiency, long spraying time, is easy to install and use, and has little impact on the protected object. The technical problems of fire fighting in immersed transformers can be used not only for oil-immersed transformers in transit, but also for new oil-immersed transformers.

附图说明Description of drawings

图1是本发明***示意图；Fig. 1 is the system schematic diagram of the present invention;

图2是本发明***平面布置图；Fig. 2 is the system plan layout of the present invention;

图3是本发明***正常状态下剖面图；Fig. 3 is the sectional view under the normal state of the system of the present invention;

图4是本发明***启动后剖面图；Fig. 4 is the sectional view after the system of the present invention is started;

图5是本发明压力伸缩管正常状态下剖面图；Fig. 5 is the sectional view of the pressure expansion tube of the present invention under the normal state;

图6是本发明压力伸缩管启动后剖面图。Figure 6 is a cross-sectional view of the pressure expansion tube of the present invention after it is activated.

具体实施方式Detailed ways

下面结合实施例及其附图对本发明作进一步说明。The present invention will be further described below with reference to the embodiments and the accompanying drawings.

如图1至图6所示，抗爆型泡沫喷雾灭火***包括消防泵组6、储液罐1、泡沫比例混合器2、供液管网12、水平管道3、压力伸缩管5、水雾喷头4，消防泵组6进口与消防水源连通，消防泵组6通过泡沫比例混合器2与供液管网12进口连通，供液管网12出口分别连通若干水平管道3，每个水平管道3上设有数个安装有水雾喷头4的压力伸缩管5；泡沫比例混合器2与储液罐1连通。As shown in Figures 1 to 6, the anti-explosion foam spray fire extinguishing system includes a fire pump group 6, a liquid storage tank 1, a foam proportioning mixer 2, a liquid supply pipe network 12, a horizontal pipe 3, a pressure expansion pipe 5, and a water mist. Nozzle 4, the inlet of the fire pump group 6 is connected with the fire water source, the fire pump group 6 is connected with the inlet of the liquid supply pipe network 12 through the foam proportioning mixer 2, and the outlet of the liquid supply pipe network 12 is respectively connected with several horizontal pipes 3, each horizontal pipe 3 There are several pressure expansion tubes 5 installed with water mist nozzles 4 ; the foam proportioning mixer 2 is communicated with the liquid storage tank 1 .

压力伸缩管5一端通过螺纹或焊接方式与水平管道3连通，另一端通过螺纹或焊接方式与水雾喷头4连通，本实施例针对某大型油浸变压器，在两侧防火墙9各设置五个水雾喷头4，将油浸变压器完全包络，水雾喷头4水平安装，依次与压力伸缩管5、水平管道3连通，水平管道3、压力伸缩管5和水雾喷头4一并水平放置在槽钢10内，并由防护盖11完全遮盖，槽钢10紧贴防火墙水平设置或由钢制支撑架架起后水平设置，泡沫比例混合器2按照一定比例将储液罐1内的泡沫液经注入到消防泵组6提供的消防水中，形成泡沫混合液后，再经供液管网12、水平管道3输送至压力伸缩管5，压力伸缩管5内充压后自动伸展开，并将水雾喷头4自槽钢10内伸出，防护盖11受水雾喷头4冲击后自由脱落，泡沫混合液再由压力伸缩管5输送至水雾喷头4进行喷放，喷雾范围边界7以雾化形态包络油浸变压器8进行冷却降温，同时迅速在油面上形成一层水膜和乳化层，使油浸变压器油与空气隔绝而灭火。One end of the pressure expansion tube 5 is communicated with the horizontal pipe 3 by threading or welding, and the other end is communicated with the water mist nozzle 4 by threading or welding. In this embodiment, for a certain large oil-immersed transformer, five water walls are provided on each of the firewalls 9 on both sides. The mist nozzle 4 completely envelops the oil-immersed transformer, and the water mist nozzle 4 is installed horizontally, which is connected with the pressure expansion pipe 5 and the horizontal pipe 3 in turn. The horizontal pipe 3, the pressure expansion pipe 5 and the water mist sprinkler 4 are placed in the tank Inside the steel 10 and completely covered by the protective cover 11, the channel steel 10 is placed horizontally close to the firewall or is set horizontally after being erected by a steel support frame. It is injected into the fire fighting water provided by the fire pump group 6, and after forming a foam mixture, it is transported to the pressure expansion pipe 5 through the liquid supply pipe network 12 and the horizontal pipe 3, and the pressure expansion pipe 5 automatically expands after being pressurized, and the water The mist nozzle 4 protrudes from the channel steel 10, the protective cover 11 falls off freely after being impacted by the water mist nozzle 4, and the foam mixture is transported by the pressure expansion tube 5 to the water mist nozzle 4 for spraying, and the spray range boundary 7 is atomized. The shape envelope of the oil-immersed transformer 8 conducts cooling and cooling, and at the same time, a layer of water film and emulsification layer is rapidly formed on the oil surface, so that the oil-immersed transformer oil is isolated from the air and extinguished.

本实施例的泡沫比例混合器2采用PHP45J/3型机械泵入式泡沫比例混合器。采用FN50/1.6多喷嘴组合式水雾喷头，工作压力为0.5MPa ~ 3.5MPa，射程为3m~15m，距喷头3m处的喷雾覆盖直径为2m~8m。The foam proportioning mixer 2 of this embodiment adopts a PHP45J/3 type mechanical pumping foam proportioning mixer. Using FN50/1.6 multi-nozzle combined water mist nozzle, the working pressure is 0.5MPa ~ 3.5MPa, the range is 3m~15m, and the spray coverage diameter at 3m from the nozzle is 2m~8m.

防护盖11采用塑料、木质或金属耐火材料制作，火灾情况下受水雾喷头4冲击后自由脱落。储液罐1为常压罐，采用耐腐蚀高分子材料或不锈钢制作。The protective cover 11 is made of plastic, wood or metal refractory material, and falls off freely after being impacted by the water mist nozzle 4 under fire conditions. The liquid storage tank 1 is an atmospheric pressure tank, which is made of corrosion-resistant polymer material or stainless steel.

如图5、图6所示，压力伸缩管5包括外管5-1、内管5-2，内管5-2设于外管5-1内部，外管5-1进水端与水平管道3的接口3-1连通，外管5-1出水端内部依次设有环形凹槽5-1-1、第一密封圈5-1-2、第二密封圈5-1-3；内管5-2一端为密封端5-2-1，依次设有第三密封圈5-2-3、进水孔5-2-2、第四密封圈5-2-4，内管5-2另一端为出水端5-2-5与水雾喷头4连通。As shown in Figures 5 and 6, the pressure expansion tube 5 includes an outer tube 5-1 and an inner tube 5-2, the inner tube 5-2 is arranged inside the outer tube 5-1, and the water inlet end of the outer tube 5-1 is connected to the horizontal The interface 3-1 of the pipe 3 is connected, and the inner part of the water outlet of the outer pipe 5-1 is sequentially provided with an annular groove 5-1-1, a first sealing ring 5-1-2, and a second sealing ring 5-1-3; One end of the pipe 5-2 is the sealing end 5-2-1, which is sequentially provided with a third sealing ring 5-2-3, a water inlet hole 5-2-2, a fourth sealing ring 5-2-4, and the inner pipe 5- 2. The other end is the water outlet end 5-2-5, which is communicated with the water mist nozzle 4.

压力伸缩管5在缩的状态下，内管5-2的密封端5-2-1、第三密封圈5-2-3和进水孔5-2-2完全***外管5-1内，由第三密封圈5-2-3分隔为左右两部分，左侧部分与水平管道3、供液管网12连通，右侧部分与水雾喷头4和外界连通；压力伸缩管5在伸展状态下，内管5-2的密封端5-2-1、第三密封圈5-2-3和进水孔5-2-2右移至外管5-1的环形凹槽5-1-1内，外管5-1出水端与内管5-2之间通过第一密封圈5-1-2、第二密封圈5-1-3和第四密封圈5-2-4完全密闭。When the pressure telescopic tube 5 is in a retracted state, the sealing end 5-2-1 of the inner tube 5-2, the third sealing ring 5-2-3 and the water inlet hole 5-2-2 are completely inserted into the outer tube 5-1 , is divided into two parts by the third sealing ring 5-2-3, the left part is connected with the horizontal pipe 3 and the liquid supply pipe network 12, and the right part is connected with the water mist nozzle 4 and the outside world; the pressure expansion pipe 5 is extending In the state, the sealing end 5-2-1 of the inner pipe 5-2, the third sealing ring 5-2-3 and the water inlet hole 5-2-2 are moved to the right to the annular groove 5-1 of the outer pipe 5-1 -1 inside, between the water outlet end of the outer pipe 5-1 and the inner pipe 5-2 completely through the first sealing ring 5-1-2, the second sealing ring 5-1-3 and the fourth sealing ring 5-2-4 airtight.

正常情况下，灭火***处于待机状态，压力伸缩管5处于缩的状态，水平管道3、压力伸缩管5和水雾喷头4一并隐藏在槽钢10，并由防护盖11遮盖，不受灰尘、烟气、高温、***冲击等影响，如图5所示。灭火***启动后，消防泵组6和泡沫比例混合器2开始向供液管网12和水平管道3供液，内管5-2因左侧压力升高而迅速向右移动，移动至右端后，如图6所示。第三密封圈5-2-3因直径小于外管5-1环形凹槽5-1-1的内径，不再起到密闭作用，泡沫混合液经外管5-1的环形凹槽5-1-1与内管5-2密封端之间的环隙进入进水孔5-2-2，再从内管5-2内部通道进入水雾喷头4。Under normal circumstances, the fire extinguishing system is in a standby state, the pressure expansion pipe 5 is in a retracted state, the horizontal pipe 3, the pressure expansion pipe 5 and the water mist nozzle 4 are hidden in the channel steel 10 and covered by the protective cover 11. , flue gas, high temperature, explosion impact and other effects, as shown in Figure 5. After the fire extinguishing system is started, the fire pump group 6 and the foam proportioning mixer 2 begin to supply liquid to the liquid supply pipe network 12 and the horizontal pipe 3, and the inner pipe 5-2 moves to the right rapidly due to the increase of the pressure on the left side, and after moving to the right end ,As shown in Figure 6. Because the diameter of the third sealing ring 5-2-3 is smaller than the inner diameter of the annular groove 5-1-1 of the outer pipe 5-1, it no longer plays a sealing role, and the foam mixed liquid passes through the annular groove 5-1 of the outer pipe 5-1. The annular gap between -1 and the sealing end of the inner pipe 5-2 enters the water inlet hole 5-2-2, and then enters the water mist nozzle 4 from the inner channel of the inner pipe 5-2.

Claims (6)

1.一种抗爆型泡沫喷雾灭火***，其特征在于，包括消防泵组（6）、储液罐（1）、泡沫比例混合器（2）、供液管网（12）、水平管道（3）、压力伸缩管（5）、水雾喷头（4），所述消防泵组（6）进口与消防水源连通，消防泵组（6）出口通过泡沫比例混合器（2）与供液管网（12）进口连通，供液管网（12）出口分别连通若干水平管道（3），每个水平管道（3）上设有数个安装有水雾喷头（4）的压力伸缩管（5）；所述泡沫比例混合器（2）与储液罐（1）连通。1. An anti-explosion foam spray fire extinguishing system, characterized in that it comprises a fire pump group (6), a liquid storage tank (1), a foam proportioning mixer (2), a liquid supply pipe network (12), a horizontal pipeline ( 3), pressure expansion pipe (5), water mist nozzle (4), the inlet of the fire pump group (6) is connected with the fire water source, and the outlet of the fire pump group (6) is connected to the liquid supply pipe through the foam proportioning mixer (2) The inlet of the net (12) is connected to the outlet, and the outlet of the liquid supply pipe network (12) is respectively connected to several horizontal pipes (3). ; The foam proportioning mixer (2) is communicated with the liquid storage tank (1). 2.根据权利要求1所述的一种抗爆型泡沫喷雾灭火***，其特征在于，所述压力伸缩管（5）包括外管（5-1）、内管（5-2），所述内管（5-2）设于外管（5-1）内部，所述外管（5-1）进水端与水平管道3的接口（3-1）连通，外管（5-1）出水端内部依次设有环形凹槽（5-1-1）、第一密封圈（5-1-2）、第二密封圈（5-1-3）；所述内管（5-2）一端为密封端（5-2-1），依次设有第三密封圈（5-2-3）、进水孔（5-2-2）、第四密封圈（5-2-4），内管（5-2）另一端为出水端（5-2-5）与水雾喷头（4）连通。2. An anti-explosion foam spray fire extinguishing system according to claim 1, characterized in that, the pressure expansion pipe (5) comprises an outer pipe (5-1) and an inner pipe (5-2), the The inner pipe (5-2) is arranged inside the outer pipe (5-1), the water inlet end of the outer pipe (5-1) is communicated with the interface (3-1) of the horizontal pipe 3, and the outer pipe (5-1) An annular groove (5-1-1), a first sealing ring (5-1-2), and a second sealing ring (5-1-3) are sequentially arranged inside the water outlet; the inner pipe (5-2) One end is the sealing end (5-2-1), which is provided with a third sealing ring (5-2-3), a water inlet hole (5-2-2), and a fourth sealing ring (5-2-4) in sequence. The other end of the inner pipe (5-2) is the water outlet end (5-2-5) which is communicated with the water mist nozzle (4). 3.根据权利要求2所述的一种抗爆型泡沫喷雾灭火***，其特征在于，所述压力伸缩管（5）在缩的状态下，内管（5-2）的密封端（5-2-1）、第三密封圈（5-2-3）和进水孔（5-2-2）完全***外管（5-1）内，由第三密封圈（5-2-3）分隔为左右两部分，左侧部分与水平管道（3）、供液管网（12）连通，右侧部分与水雾喷头（4）和外界连通；压力伸缩管（5）在伸展状态下，所述内管（5-2）的密封端（5-2-1）、第三密封圈（5-2-3）和进水孔（5-2-2）右移至外管（5-1）的环形凹槽（5-1-1）内，外管（5-1）出水端与内管（5-2）之间通过第一密封圈（5-1-2）、第二密封圈（5-1-3）和第四密封圈5-2-4完全密闭。3. An anti-explosion foam spray fire extinguishing system according to claim 2, characterized in that, when the pressure expansion pipe (5) is in a retracted state, the sealed end (5-2) of the inner pipe (5-2) 2-1), the third sealing ring (5-2-3) and the water inlet hole (5-2-2) are completely inserted into the outer pipe (5-1), and the third sealing ring (5-2-3) It is divided into left and right parts, the left part is connected with the horizontal pipe (3) and the liquid supply pipe network (12), and the right part is connected with the water mist nozzle (4) and the outside world; when the pressure expansion pipe (5) is stretched, The sealing end (5-2-1), the third sealing ring (5-2-3) and the water inlet hole (5-2-2) of the inner pipe (5-2) are moved to the right of the outer pipe (5- 1) In the annular groove (5-1-1), the first sealing ring (5-1-2) and the second sealing ring (5-1-2) are passed between the water outlet end of the outer pipe (5-1) and the inner The ring (5-1-3) and the fourth sealing ring 5-2-4 are completely closed. 4.根据权利要求1至3任一项所述的一种抗爆型泡沫喷雾灭火***，其特征在于，所述水雾喷头（4）采用多喷嘴组合式水雾喷头。The anti-explosion foam spray fire extinguishing system according to any one of claims 1 to 3, wherein the water mist nozzle (4) adopts a multi-nozzle combined water mist nozzle. 5.根据权利要求1所述的一种抗爆型泡沫喷雾灭火***，其特征在于，所述泡沫比例混合器（2）采用机械泵入式泡沫比例混合器或计量注入式泡沫比例混合器任意一种。5. An anti-explosion foam spray fire extinguishing system according to claim 1, characterized in that, the foam proportioning mixer (2) adopts a mechanical pump-in type foam proportioning mixer or a metering injection type foam proportioning mixer. A sort of. 6.根据权利要求1所述的一种抗爆型泡沫喷雾灭火***，其特征在于，所述储液罐（1）为常压罐，采用耐腐蚀高分子材料或不锈钢制作。6 . The anti-explosion foam spray fire extinguishing system according to claim 1 , wherein the liquid storage tank ( 1 ) is a normal pressure tank and is made of corrosion-resistant polymer material or stainless steel. 7 .
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