原文：
            现代建筑的重要防火措施之一就是设置防火分区。建筑发生火灾时，把火灾限制在有限的空间里，在一定时间内不得蔓延出去。赢得火场人员疏散和火灾扑救时间。但是，在现代建筑中，都设置了通风系统、中央空调系统、排烟系统等设施。这些设施的管道纵横交错，通向建筑内的各处甚至每个房间。当火灾发生时，高温烟气就会通过这些管道放散出去，成为火灾蔓延的重要渠道。这样我们设置的防火分区，就失去了作用，不能保证在一定时间内火灾不向外蔓延。所以保证在火灾发生时，防火分区的有效性，是十分重要的一个问题。我们找到了一个巧妙的解决办法，找到了堵塞这些管道的瓶塞——防火阀，用它来控制高温烟气的流动，防止火灾蔓延。 火场中燃烧产生的高温烟气，不但有毒，而且能带走火场产生的百分之三十左右的热量，及时排走高温烟气，对控制火灾蔓延，减少人员伤亡，减小扑救难度有非常重要的意义。我们启动了防火分区的设施，将火场与外界分开的同时，必须断开通风和空调系统的管道，使管道内外隔绝，防止高温烟气从这里泄漏出去，还必须保留高温烟气排放的通道，让高温烟气尽快从排烟系统排放出去，这种控制都必须借助于防火阀。

            下面小编为您推荐： 深圳市龙岗区布吉鑫煌白铁店——电动防火阀 推荐理由：该防烟防火调节阀具有感温关闭、电动关闭、手动关闭、输出关闭信号、联锁风机、自动复位等性能。叶片开度调节，逆时针方向转动机构上的手柄，便可达到所需的角度。 功能特点： 阀门关闭，当控制中心输出DC24V电源，接通执行机构上的接线端子2、3，电磁铁吸合，连动锁定机构动作，使阀门主轴上的束爪与锁定机构脱开，阀门在拉簧力作用下顺时针迅速关闭，机构一侧设置手动拉索，同样实现阀门关闭，当气流温度达280℃易熔杆芯脱落，立片在拉簧力作用下，拉动活动板使主轴束爪与活动板脱开，阀门关闭。 阀门复位，当电源DC24V接通执行机构上的接线端子1、3，电机动作，通过机构内的变速机构及曲柄摇杆机构带动主轴作逆时针方向旋转，使主轴束爪与活动板进行锁即可。 70℃自动关闭，电信号DC24V关闭，减压阀输出关闭电信号，输出风机联锁信号；页片可进行手动0-90度五级调节；手动开启或关闭。

           靖江市东亚通风空调制造有限公司——全自动防烟防火阀 推荐理由：适用于有防烟防火要求的通风空调系统的风管上，特别适用于有卤代烷气体自动灭火装置的重要建筑物，因灭火时释放气体前要求关闭所有阀门，灭火完毕后，又应该打开阀门进行通风排气；以及当排烟系统兼作通风空调系统时，既要考虑通风时空气调节要求，又要考虑发生火灾时能迅速排烟防火的要求，还适用于通风、空调管道装在吊顶上，无法用人工手动复位的场合。

          功能特点： 1、阀门平时呈常开状态，由控制中心输出的DC24V电源（DC24V±10%，0.3A±10%）可以使阀门自动关闭，并能联锁通风、空调风机停止，输出关闭信号 2、70℃时，温度熔断器动作，阀门关闭 3、按阀门上a执行器的手动按钮，阀门关闭 4、当需要防烟防火阀再次打开时，电信号（DC24、0.4A）可以使阀门自动复位到原先开启状态，复位扭矩＞12m，并可联锁通风，空调风机自动启动 5、阀门既可中央控制集中控制，水力控制阀又可单元机自动控制 6、这种机构中设有扭矩调节装置，可根据防火阀规格调整其动作扭矩，以确保动作可靠性，动作扭矩分三档 7、机构上面的调节装置能够分档调节阀门叶片开度 江苏锦松空调设备有限公司——防火阀 推荐理由：有自锁装置，当阀站上弹簧受高温失效后；电磁阀阀门不会在高热气压作用下开启；电信号装置安装在执行机构中。 功能特点： 1、用于通风系统，70℃阀门自地动关闭 2、用于排烟系统，28℃阀门自地动关闭 3、手动复位、关闭，有自锁装置 4、开启角度（0-90°）可调节 5、易熔杆动作后输出为灾报警号 6、手分理处关闭，打开挂钩，输出关闭电信 防火阀安装在各系统的管道上。通常是翻板碟式阀，通风和空调系统用的防火阀，通常是长开式的，翻版平行于管道，火灾发生时，可以通过电磁阀或手动关闭，使管道与火场断开。排烟管道的防火阀平时是长闭的，火灾发生时，调节阀自动或手动打开阀门排烟。当管道温度过高时，为防止火势蔓延，排烟防火阀也要关闭。

           防火阀通常是由熔断器控制的，排烟管内和通风空调管内的熔断器熔断温度有所不同。当火灾发生后，操作机构在烟感报警电信号作用下，将阀门自动打开；当排烟管内的气流达到摄氏280度时，管道防火阀熔断器熔断，关闭防火阀，并且自动或手动启动相应模块，去关闭排烟机。有通风和中央空调设备时，其送风管内的气流温度达到摄氏70度时，防火阀熔断器动作关闭防火阀。关闭信号传送到消防控制室的控制器，根据联动关系和预定程序，关闭送风机和空调机。通常打开排烟阀、启动排烟风机和关闭通风、空调管道上的防火阀的指令是编在一起的，同时动作。而且它们的运行动作及回答信号都在消防控制室的控制器上有显示。（每个防火阀都有位置编号）呼吸阀我们知道了防火阀的功能和重要作用，平时就要注意防火阀的维修、维护工作，让它在关键时刻发挥作用。“养兵千日，用兵一时，”火灾发生时的阀门正确无误的启动、关闭，要靠平时的精心护理，阀门要定期实验、开启、上油，防止锈蚀、变形、关闭不严等情况的发生。每个防火阀上都要有醒目的标志，上面标明它的系统位置和编号，以及责任人和最后一次检修时间。 建筑的自动消防设施每年要进行法定检测，防火阀每年都要按一定的比例进行抽测，要认真选择位置确定编号，保证测试质量，使防火阀性能可靠、有效、万无一失。

“ Blocking the spread of high-temperature gas "bottle" - fire dampers”是由中国安全阀网提供的国际阀门新闻，译文仅供参考。另外，中国安全阀网还提供相关产品搜索： 弹簧式安全阀、 脉冲式安全阀(先导式安全阀)、 杠杆式安全阀、 微启式安全阀、 全启式安全阀等。

译文：
          Modern architecture is one of the important fire prevention measures to set fire district. When building a fire, the fire in a limited space, not spread in a certain period of time out. Won the fire evacuation and fire fighting time. However, in modern buildings are set up ventilation system, central air conditioning system, exhaust system and other facilities. These facilities, pipelines crisscross the entire building and even leading to each room. When fire occurs, the high temperature flue gas will go through these channels Bleeding become an important channel for the spread of fire. So we set the fire district, lost a role, can not guarantee a certain period of time the fire did not spread out. So ensure that the fire occurred, the effectiveness of fire protection district is a very important issue. We found a neat solution, and found the cork to plug the pipe - fire dampers, used to control the flow of hot flue gas to prevent fire spread. Fire in the high temperature combustion gas, is not only toxic, but can take the fire generated about 30 percent of calories, high temperature gas discharge in a timely manner, to controlSAFETY VALVES fire spread, to reduce casualties, reduce the fighting very difficult significance. We started the fire district's facilities, will be fire separated from the outside world, while ventilation and air conditioning systems must be disconnected pipes to make the pipe inside and outside the isolated, to prevent the high temperature gas leak from here, but also must retain the high temperature gas discharge channel, as soon as possible so that high temperature gas emitted from the exhaust system, such control must be by means of fire dampers. Xiao Bian to recommend the following: Longgang District, cloth Jixin Huang tin shop - Electric Fire Damper Recommended reason: the fire and smoke with a temperature control valve closed, power off, manually turn off, turn off the output signal, interlocking fan, automatic reset properties. Blade opening adjustment, rotates counter-clockwise on the handle, can achieve the required angle. Features: Valve closure, when the control center output DC24V power supply, connected to the implementing agencies on the terminal 2,3, solenoid pull, linked locking mechanism moves the valve spindle and the beam claw locking mechanism disengaged, the valve extension spring force in the rapid closure of the next clockwise, institutional side of the cable setting manually, to achieve the same valve closed, when the air temperature reaches 280 ℃ fusible core rod off, vertical pieces in the extension spring force, the pull activity board to beam axis and activities claw plate was torn off and the valve closed. Valve reset, when power supply DC24V connected to the implementing agencies on the terminal 1,3, motor movement, through the institutions of the speed change mechanism and the crank-rocker mechanism for counter-clockwise rotating drive shaft, and activities to spindle beam claw lock plate can. 70 ℃ automatically shut down, turn off electrical signals DC24V, output shut down signal, the output fan interlock signal; page piece can be manually adjusted 0-90 degrees 5; manually turned on or off.  Jingjiang City, Ventilation and Air Conditioning Co., Ltd. East Asia - automatic smoke dampers Recommended reason: there is smoke in the fire safety requirements for ventilation and air conditioning duct system, particularly suitable for a Halon gas fire extinguishing devices important buildings, due to the release of gas before extinguishing when asked to close all valves, fire has been completed, then exhaust valve should be opened for ventilation; and when the smoke extraction system doubles as a ventilation and air conditioning system, it is necessary to consider the ventilation of the air conditioning requirements, but also consider the case of fire, rapid fire smoke requirements, also apply to ventilation and air conditioning ducts installed in the ceiling, can not manually reset the occasion. Features: 1, the valve was always open at normal times, output from the control center DC24V power supply (DC24V ± 10%, 0.3A ± 10%) can automatically close the valve, and can interlock ventilation, air-conditioning fan to stop, turn off the signal output 2,70 ℃, the temperature fuse action, the valve closed 3, according to the valve on aPLUG VALVES manual actuator button, the valve closed 4, when the need to smoke damper opens again, the electrical signal (DC24, 0.4A) enables the valve to open automatically reset to its original state, reset the torque> 12m, and can interlock ventilation, air conditioning fan automatically starts 5, the valve can control the concentration of central control, but also machine control unit 6, this institution has torque adjusting device can adjust its movement according to damper torque specifications to ensure the reliability of action, action, third gear torque points 7, body conditioning to the above sub-regulation valve leaf opening file Jiang Su Jinsong Air Conditioning Equipment Co. - Fire Damper Recommended reason: There are self-locking device, when the valve station on the spring after the failure of high MUD VALVEStemperature; valve will not open in the heat under pressure; signal device installed in the implementing agencies. Features: 1, for the ventilation system, 70 ℃ close the valve from the earth 2, for the exhaust system, 28 ℃ from the earth closed valve 3, manual reset, shut down, a self-locking devices 4, opening angle (0-90 °) Adjustable 5, after the fusible rod action alarm output for the disaster number 6, hand sub-branches off, open the link, the output close Telecom Damper installed in the system of pipes. Usually flap disc valves, ventilation dampers and air conditioning systems, usually open long, the replica of parallel pipelines, fire occurs, or can be manually closed by a solenoid valve to disconnect the piping and fire. Smoke damper pipe is usually long closed, the fire occurs, automatically or manually open the valve exhaust. When the pipe temperature is too high, in order to prevent spread of fire and smoke damper should be closed. Damper is usually controlled by a fuse, smoke pipes and ventilation and air conditioning control the temperature inside the fuse fuse different. When fire occurs, smoke alarm signal operating agencies under the action of the valve opens automatically; when the air inside the exhaust pipe 280 degrees Celsius, the pipe damper Fuses, closed dampers, and automatic or manual start the corresponding module to close the smokeREDUCING VALVES machine. With ventilation and central air conditioning, its air supply tube of the air temperature of 70 degrees, close the damper action damper fuse. Fire control room closure signal is sent to the controller, according to linkage relations and booking procedures, turn off blower and air conditioners. Normally open exhaust valve, start the exhaust fan on and off ventilation, air conditioning ducts on the damper command is compiled together at the same time action. And their running action and response signals are in the fire control room of the controller are displayed. (Each damper has a position number) we know the function and the important role of fire damper, dampers usually mustMULTI-FUNCTIONAL WATER PUMP CONTROL VALVE pay attention to the repair, maintenance work, let it play a role at a crucial moment. "The idea that Japan, used for one day," when the fire broke valve correct startup, shut down, rely on the usual intensive care, to regularly test the valve, open, oil, to prevent corrosion, distortion, close lax, etc. place. Each damper on the must have eye-catching signs, identifying the location and number of its systems, as well as responsibility for maintenance and the last time. Building automatic fire facilities to carry out statutory annual testing, fire damper according to a certain percentage each year for future reference, to determine the number carefully chosen location, quality assurance testing to make damper reliable, effective, perfectly safe.

原文来源：http://www.1anquanfa.com/

2010-08-23 07:23

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