CN202909351U - Layout structure for large-scale high expansion foam extinguishing system - Google Patents

Layout structure for large-scale high expansion foam extinguishing system Download PDF

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CN202909351U
CN202909351U CN 201220591521 CN201220591521U CN202909351U CN 202909351 U CN202909351 U CN 202909351U CN 201220591521 CN201220591521 CN 201220591521 CN 201220591521 U CN201220591521 U CN 201220591521U CN 202909351 U CN202909351 U CN 202909351U
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foam
fire extinguishing
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tank
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张洪英
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Ansteel Engineering Technology Corp Ltd
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Abstract

本实用新型涉及一种大型高倍泡沫灭火系统的布置结构,其特征在于,将所辖防护区分成几个分区,各分区采用一个集中控制的消防泵站和消防控制中心;各分区分别设置压力比例罐囊式泡沫灭火装置,储罐内储存有泡沫原液;在各防护区内设高倍泡沫发生器;消防泵站距各防护区的距离满足从报警到泡沫发生器开始喷出泡沫的延时时间不超过30s。与现有技术相比,本实用新型的有益效果是:1)缩短比例混合器至防护区的距离,减少了从灭火系统启动至泡沫发生器开始发泡的时间。2)压力水和泡沫液在罐内被隔膜囊分开,延长泡沫液的寿命。3)实现了从报警到泡沫开始喷出的延时时间不超过30s,满足国际规范要求。

The utility model relates to an arrangement structure of a large-scale high-expansion foam fire extinguishing system, which is characterized in that the protected area under its jurisdiction is divided into several partitions, and each partition adopts a centrally controlled fire pump station and a fire control center; each partition is respectively set with a pressure ratio Tank-type foam fire extinguishing device, the foam stock solution is stored in the storage tank; high-expansion foam generators are installed in each protection area; the distance between the fire pump station and each protection area meets the delay time from the alarm to the foam generator starting to spray foam No more than 30s. Compared with the prior art, the beneficial effects of the utility model are: 1) The distance from the proportional mixer to the protection zone is shortened, and the time from the start of the fire extinguishing system to the foaming of the foam generator is shortened. 2) The pressure water and the foam liquid are separated by the diaphragm bag in the tank to prolong the life of the foam liquid. 3) The delay time from the alarm to the start of foam spraying is not more than 30s, which meets the requirements of international regulations.

Description

大型高倍泡沫灭火系统的布置结构Arrangement structure of large high-expansion foam fire extinguishing system

技术领域 technical field

本实用新型涉及泡沫灭火系统设计工艺领域,尤其涉及一种大型高倍泡沫灭火系统的布置结构。The utility model relates to the technical field of foam fire extinguishing system design, in particular to an arrangement structure of a large-scale high-expansion foam fire extinguishing system.

背景技术 Background technique

在冶金企业的地下润滑站、液压站和地下油库等危险场所的灭火系统一般普遍采用高倍泡沫灭火方案。美国和德国标准对高倍泡沫灭火系统从接到确定的火灾报警信号到泡沫发生器开始喷放泡沫的时间,规定小于30s,既从系统启动到泡沫发生器开始喷放泡沫的时间小于30s。现在我国在《高倍数、中倍数泡沫灭火系统设计规范》GB50196-93(2002年版)和《泡沫灭火系统设计规范》GB50151-2010,都规定了“高倍泡沫灭火系统从报警到泡沫开始喷出的延时时间不超过1min”。High-expansion foam fire extinguishing schemes are generally used in fire extinguishing systems in dangerous places such as underground lubrication stations, hydraulic stations, and underground oil depots in metallurgical enterprises. The American and German standards stipulate that the time from receiving a definite fire alarm signal to the foam generator starting to spray foam for the high-expansion foam fire extinguishing system is less than 30s, that is, the time from system startup to the foam generator starting to spray foam is less than 30s. Now my country has stipulated in "Code for Design of High Expansion and Medium Expansion Foam Fire Extinguishing System" GB50196-93 (2002 Edition) and "Code for Design of Foam Fire Extinguishing System" GB50151-2010 that "the high expansion foam fire extinguishing system starts to spray from the alarm to the foam" The delay time shall not exceed 1min".

尽管从报警到泡沫开始喷出的延时时间越短,越能保证灭火系统尽早可靠地实施灭火,减少火灾造成的损失,但对于大型全淹没高倍泡沫灭火系统,特别是对于各防护区分散、体积大小不等、彼此距离较远的灭火系统而言,即要满足“从报警到泡沫开始喷出的延时时间不超过1min”, 甚至不超过30s,又要保证系统设计经济、合理,存在相当大的难度,是高倍泡沫灭火系统设计中的一大难题。Although the shorter the delay time from the alarm to the start of foam spraying, the more reliable the fire extinguishing system can be ensured to extinguish the fire as soon as possible, and the loss caused by the fire can be reduced. For fire extinguishing systems with different sizes and far distances from each other, it is necessary to meet the "delay time from alarm to foam spraying not exceeding 1min", or even not exceeding 30s, and to ensure that the system design is economical, reasonable, and existent. Considerable difficulty is a major problem in the design of high-expansion foam fire extinguishing systems.

以往设计者常采用的设计方法有两种:一种是预先将水和泡沫液混合好,在各防护区外分别设置控制阀,将泡沫混合液预先充满到防护区控制阀前的方法;另一种是分别向各防护区设计一条泡沫原液和一条水管道,在各防护区外分别设置比例混合器和控制阀的方法。这两种方法都存在弊端:第一种方法,由于泡沫液的可降解性,泡沫液和水混合后,很快降解失效,需不断更换泡沫液,造成很大的浪费。第二种方法,用管道长时间储存泡沫原液、长距离管道输送泡沫原液和大量设置比例混合器,一方面泡沫原液在管道中储存容易失效,另一方面工程投资和后续维护、保养费用,都大幅度提高。从技术安全和经济性可靠性的角度分析,这两个设计方案都不合理。In the past, designers often used two design methods: one is to mix water and foam liquid in advance, set control valves outside each protection area, and pre-fill the foam mixture to the front of the control valve in the protection area; One is to design a foam stock solution and a water pipeline to each protection area, and install a proportional mixer and a control valve outside each protection area. There are disadvantages in these two methods: the first method, due to the degradability of the foam liquid, after the foam liquid and water are mixed, it will degrade quickly and fail, and the foam liquid needs to be constantly replaced, causing a lot of waste. The second method is to use pipelines for long-term storage of foam stock solution, long-distance pipeline transportation of foam stock solution and a large number of proportional mixers. On the one hand, the foam stock solution is prone to failure when stored in pipelines. substantial improvement. From the perspective of technical safety and economical reliability, these two design schemes are unreasonable.

发明内容Contents of the invention

本实用新型的目的是提供一种大型高倍泡沫灭火系统的布置结构,克服现有技术的不足,针对各防护区分散、体积大小不等、距离较远的实际特点,即使从接到确定的火灾报警信号到泡沫发生器开始喷放泡沫的时间小于30s,又延长泡沫液的使用寿命,降低工程投资和后续工程的维护量。The purpose of this utility model is to provide a layout structure of a large-scale high-expansion foam fire extinguishing system, which overcomes the deficiencies of the prior art, and aims at the actual characteristics of scattered protection areas, unequal volumes, and long distances. The time from the alarm signal to the start of foam spraying by the foam generator is less than 30s, which prolongs the service life of the foam liquid and reduces engineering investment and maintenance of subsequent projects.

为解决上述技术问题,本实用新型的技术方案是:For solving the problems of the technologies described above, the technical solution of the utility model is:

大型高倍泡沫灭火系统的布置结构,是将所辖防护区分成几个分区,各分区采用一个集中控制的消防泵站和消防控制中心;消防泵站内设消防水泵;各分区分别设置一套压力比例罐囊式泡沫灭火装置;在各防护区内设高倍泡沫发生器;消防泵站和各分区的压力比例罐囊式泡沫灭火装置的设置位置满足从系统报警到相应防护区泡沫发生器开始喷出泡沫的延时时间不超过30s;The layout structure of the large-scale high-expansion foam fire extinguishing system is to divide the protected area under its jurisdiction into several partitions, and each partition adopts a centrally controlled fire pump station and fire control center; the fire pump station is equipped with a fire pump; each partition is equipped with a set of pressure Proportional tank-type foam fire extinguishing device; high-expansion foam generators are installed in each protection area; the setting position of the pressure ratio tank-type foam fire extinguishing device for the fire pump station and each partition meets the requirements from the system alarm to the foam generator in the corresponding protection area. The delay time of foaming shall not exceed 30s;

消防泵站分别与各分区的压力比例罐囊式泡沫灭火装置相连,各分区的压力比例罐囊式泡沫灭火装置分别与对应分区内各防护区所设的高倍泡沫发生器相连,在消防水泵出口管、压力比例罐囊式泡沫灭火装置进水管、泡沫原液的进口管以及各防护区泡沫混合液管路上分别设置电动控制阀和压力开关。The fire pump station is connected to the pressure proportional tank foam fire extinguishing device of each partition respectively, and the pressure proportional tank foam fire extinguishing device of each partition is respectively connected to the high-expansion foam generator set in each protection area in the corresponding partition, and the fire pump outlet Electric control valves and pressure switches are respectively set on the pipes, the inlet pipes of the pressure proportional tank foam fire extinguishing device, the inlet pipes of the foam liquid, and the foam mixture pipes in each protection zone.

与现有技术相比,本实用新型的有益效果是:Compared with the prior art, the beneficial effects of the utility model are:

1)通过将整个防护区按合理距离分成几个分区,各分区内分别采用一套压力比例罐囊式泡沫灭火装置,各压力比例罐囊式泡沫灭火装置的进水管上的电动阀处于预动作状态,各分区之间采用一个集中控制的消防泵站,这样就缩短了比例混合器至防护区的距离,减少了从灭火系统启动至泡沫发生器开始发泡的时间。1) By dividing the entire protection area into several partitions according to reasonable distances, each partition adopts a set of pressure proportional tank foam fire extinguishing device, and the electric valve on the water inlet pipe of each pressure proportional tank foam fire extinguishing device is in pre-action State, a centrally controlled fire pump station is used between each partition, which shortens the distance from the proportional mixer to the protection area, and reduces the time from the start of the fire extinguishing system to the start of foaming by the foam generator.

2)压力水和泡沫原液在罐内被隔膜囊分开,泡沫液密封储存,不易腐败变质,大大延长了泡沫液的使用寿命。2) The pressure water and the original foam liquid are separated by the diaphragm bag in the tank, and the foam liquid is sealed and stored, which is not easy to be corrupted and deteriorated, which greatly prolongs the service life of the foam liquid.

3)实现了从报警到泡沫开始喷出的延时时间不超过30s,不但满足了国内规范要求,还满足了国际规范要求,极大地降低了工程投资和后续工程的维护量。3) The delay time from the alarm to the start of foam spraying is not more than 30s, which not only meets the requirements of domestic regulations, but also meets the requirements of international regulations, which greatly reduces the project investment and maintenance of subsequent projects.

附图说明 Description of drawings

图1是本实用新型布置结构实施例结构示意图。Fig. 1 is a structural schematic diagram of an embodiment of the arrangement structure of the utility model.

具体实施方式 Detailed ways

下面结合附图对本实用新型的具体实施方式作进一步说明:The specific embodiment of the utility model will be further described below in conjunction with accompanying drawing:

见图1,是本实用新型大型高倍泡沫灭火系统的布置结构实施例结构示意图,将所辖防护区分成几个分区,各分区采用一个集中控制的消防泵站和消防控制中心;消防泵站内设消防水泵;各分区分别设置一套压力比例罐囊式泡沫灭火装置(装置内包括储罐、隔膜囊及压力比例混合器,储罐内储存有泡沫原液);在各防护区内设高倍泡沫发生器,根据防护区的大小和工艺布置情况分别选用PFS4和PFS10两种水利驱动泡沫发生器;消防泵站和各分区的压力比例罐囊式泡沫灭火装置的设置位置满足从系统报警到相应防护区泡沫发生器开始喷出泡沫的延时时间不超过30s,通过水力计算来确定;See Figure 1, which is a structural schematic diagram of an embodiment of the arrangement structure of the large-scale high-expansion foam fire extinguishing system of the present invention. The protected area under its jurisdiction is divided into several partitions, and each partition adopts a centralized control fire pump station and fire control center; Set up fire pumps; set up a set of pressure proportional tank foam fire extinguishing devices for each partition (the device includes a storage tank, a diaphragm bag and a pressure proportional mixer, and the foam stock solution is stored in the storage tank); set up high-expansion foam in each protection zone Generators, according to the size of the protection area and the process layout, two water conservancy-driven foam generators, PFS4 and PFS10, are selected respectively; the setting positions of the fire pump station and the pressure ratio tank foam fire extinguishing device of each partition meet the requirements from the system alarm to the corresponding protection. The delay time for the zone foam generator to start spraying foam shall not exceed 30s, which shall be determined by hydraulic calculation;

各分区所采用的压力比例罐囊式泡沫灭火装置的储罐容积大小、压力比例混合器的参数、水和泡沫原液进口尺寸等参数需要根据该分区内最大的一个防护区的工艺布置、泡沫液的连续供给时间及泡沫发生器的布置及压力要求等情况来分别确定。The storage tank volume of the pressure proportional tank foam fire extinguishing device used in each partition, the parameters of the pressure proportional mixer, the size of the inlet of water and foam stock solution and other parameters need to be based on the process layout of the largest protection zone in the partition, the foam liquid The continuous supply time, the layout of the foam generator and the pressure requirements are determined separately.

各分区采用一个集中控制的消防泵站,泵站内设有一工一备两台消防水泵,消防水泵的流量需要根据所有防护区中最大的一个防护区所需水的流量来确定;消防水泵的扬程需要根据距消防泵站最远的防护区的最不利点的泡沫发生器所需压力要求来确定。Each district adopts a centrally controlled fire pumping station. There are two fire pumps in the pump station. The head needs to be determined according to the pressure required by the foam generator at the most unfavorable point in the protection zone farthest from the fire pump station.

消防泵站分别与各分区的压力比例罐囊式泡沫灭火装置相连,各分区的压力比例罐囊式泡沫灭火装置分别与对应分区内各防护区所设的高倍泡沫发生器相连,在消防水泵出口管、压力比例罐囊式泡沫灭火装置进水管、泡沫原液的进口管以及各防护区泡沫混合液管路上分别设置电动控制阀和压力开关。The fire pump station is connected to the pressure proportional tank foam fire extinguishing device of each partition respectively, and the pressure proportional tank foam fire extinguishing device of each partition is respectively connected to the high-expansion foam generator set in each protection area in the corresponding partition, and the fire pump outlet Electric control valves and pressure switches are respectively set on the pipes, the inlet pipes of the pressure proportional tank foam fire extinguishing device, the inlet pipes of the foam liquid, and the foam mixture pipes in each protection zone.

本实用新型的大型高倍泡沫灭火系统的灭火方法,在待命状态,各分区的压力比例罐囊式泡沫灭火装置的进水管上的电动控制阀处于预动作状态(即平时压力比例罐囊式泡沫灭火装置的进水管的电动阀前充满满足系统要求的压力水);灭火状态,各电动控制阀动作步骤如下:In the fire extinguishing method of the large-scale high-expansion foam fire extinguishing system of the present utility model, in the standby state, the electric control valve on the water inlet pipe of the pressure proportional tank type foam fire extinguishing device of each partition is in the pre-action state (that is, the normal pressure proportional tank type foam fire extinguishing The electric valve of the water inlet pipe of the device is filled with pressure water that meets the system requirements); in the fire extinguishing state, the action steps of each electric control valve are as follows:

1)当消防控制中心接到火灾报警信号后(需要第二次确认)后,相应防护区泡沫混合液管路上的电动控制阀、相应分区的压力比例罐囊式泡沫灭火装置的进水管和泡沫原液进口电动控制阀立即开启,同时启动消防水泵;1) After the fire control center receives the fire alarm signal (requires a second confirmation), the electric control valve on the foam mixture pipeline in the corresponding protection zone, the water inlet pipe and foam The raw liquid inlet electric control valve is opened immediately, and the fire pump is started at the same time;

2)压力水经过压力比例罐囊式泡沫灭火装置的进水控制阀分别进入装置内的压力比例混合器和隔膜囊内,隔膜受水压产生蠕变,将泡沫原液压入压力比例混合器中;2) The pressurized water enters the pressure proportional mixer and the diaphragm bag in the device respectively through the water inlet control valve of the pressure proportional tank foam fire extinguishing device. ;

3)压力水和泡沫原液(耐温耐烟泡沫灭火剂)经压力比例混合器混成3~6%的泡沫混合液后,由相应防护区泡沫混合液管路上的电动控制阀引导,泡沫混合液通过防护区入口处的电动蝶阀到达指定的保护区,进入相应防护区的水利驱动式高倍泡沫发生器中,带动泡沫发生器喷放泡沫,在规范规定的时间内达到最低淹没高度,此后泡沫继续喷放,直到最后灭火。3) After the pressure water and the original foam solution (heat-resistant and smoke-resistant foam fire extinguishing agent) are mixed into a 3-6% foam mixture by a pressure proportional mixer, the foam mixture is guided by the electric control valve on the foam mixture pipeline in the corresponding protection zone, and the foam mixture Arrive at the designated protection area through the electric butterfly valve at the entrance of the protection area, enter the water conservancy-driven high-expansion foam generator in the corresponding protection area, drive the foam generator to spray foam, and reach the minimum submerged height within the time specified in the specification, after which the foam continues Spray until the fire is finally extinguished.

Claims (1)

1.大型高倍泡沫灭火系统的布置结构,其特征在于,将所辖防护区分成几个分区,各分区采用一个集中控制的消防泵站和消防控制中心;消防泵站内设消防水泵;各分区分别设置一套压力比例罐囊式泡沫灭火装置;在各防护区内设高倍泡沫发生器;消防泵站和各分区的压力比例罐囊式泡沫灭火装置的设置位置满足从系统报警到相应防护区泡沫发生器开始喷出泡沫的延时时间不超过30s;1. The layout structure of the large-scale high-expansion foam fire extinguishing system is characterized in that the protected area under its jurisdiction is divided into several partitions, and each partition adopts a centrally controlled fire pump station and fire control center; the fire pump station is equipped with a fire pump; each partition Set up a set of pressure proportional tank-type foam fire extinguishing devices; set up high-expansion foam generators in each protection zone; the setting positions of the fire pump station and the pressure-proportional tank-type foam fire extinguishing devices of each partition meet the requirements from the system alarm to the corresponding protection zone. The delay time for the foam generator to start spraying foam shall not exceed 30s; 消防泵站分别与各分区的压力比例罐囊式泡沫灭火装置相连,各分区的压力比例罐囊式泡沫灭火装置分别与对应分区内各防护区所设的高倍泡沫发生器相连,在消防水泵出口管、压力比例罐囊式泡沫灭火装置进水管、泡沫原液的进口管以及各防护区泡沫混合液管路上分别设置电动控制阀和压力开关。The fire pump station is connected to the pressure proportional tank foam fire extinguishing device of each partition respectively, and the pressure proportional tank foam fire extinguishing device of each partition is respectively connected to the high-expansion foam generator set in each protection area in the corresponding partition, and the fire pump outlet Electric control valves and pressure switches are respectively set on the pipes, the inlet pipes of the pressure proportional tank foam fire extinguishing device, the inlet pipes of the foam liquid, and the foam mixture pipes in each protection zone.
CN 201220591521 2012-11-12 2012-11-12 Layout structure for large-scale high expansion foam extinguishing system Expired - Fee Related CN202909351U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102949794A (en) * 2012-11-12 2013-03-06 鞍钢集团工程技术有限公司 Arrangement structure and fire extinguishing method of large-size high-expansion foam fire extinguishing system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102949794A (en) * 2012-11-12 2013-03-06 鞍钢集团工程技术有限公司 Arrangement structure and fire extinguishing method of large-size high-expansion foam fire extinguishing system
CN102949794B (en) * 2012-11-12 2015-03-11 鞍钢集团工程技术有限公司 Arrangement structure and fire extinguishing method of large-size high-expansion foam fire extinguishing system

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