首页>
外国专利>
system to prevent it or turn off the fire and combustion fuel tanks of winter
system to prevent it or turn off the fire and combustion fuel tanks of winter
展开▼
机译：系统来防止它或关闭冬天的火和燃烧燃料箱
展开▼
页面导航
摘要
著录项
相似文献
摘要
1343457 Minimising fires in.fuel tanks PARKER-HANNIFIN CORP 23 April 1971 [11 May 1970] 11134/71 Heading ASA An inerting system for an inflammable fluid in a container, e.g. aircraft fuel tank 17, comprises dewar 10 fitted with pressure relief valve 12 and containing a liquid at cryogenic temperature and under its own vapour pressure, e.g. N 2 at -205‹C to -195‹C and 2-5 kg/cmSP2/SP, connected by conduit 15 via control valve 21 to fog nozzle 35 positioned in ullage 16 above fuel 18. Valve 21 is normally closed and is associated with operating device 22 which is automatically actuated by fire detectors 23, 24 and control unit 25, and with operating device 28 which is actuated by manual operation of switch button 29. Unit 25 may include a timer to close valve 21 after a predetermined period. Check valve 33 is provided upstream of nozzle 35 and one-way vent valve 38 prevents overpressurising of tank 17. Ullage 16 contains fuel vapour, oxygen from the atmosphere or released from the fuel, and possibly gaseous N 2 . If the O 2 content exceeds 11% and ignition of the ullage gas occurs, detectors 23, 24 open valve 21. Liquid N 2 is sprayed from nozzle 35 in droplets and on vaporising dilutes and cools the ullage gases to the point where combustion stops. Valve 21 can also be opened by button 29 if manual control is required. Conduit 15 is chosen with diameter and length to ensure that N 2 reaches nozzle 35 at least partly in liquid form.
展开▼
机译：1343457尽量减少燃料箱中的火灾PARKER-HANNIFIN CORP 1971年4月23日[1970年5月11日] 11134/71 Heading ASA一种惰化系统，用于容器中的易燃液体，例如飞机燃料箱17包括装有杜瓦瓶10的杜瓦瓶10，杜瓦瓶10装有泄压阀12，并包含处于低温和在其自身的蒸汽压力下（例如蒸汽压力）的液体。 N 2在-205°C到-195 ‹C和2-5 kg / cm 2 ，通过导管15通过控制阀21连接到位于燃料18上方缺量16中的雾化喷嘴35。阀21通常关闭，并且与由火灾探测器23、24和控制单元25自动致动的操作装置22以及与通过手动操作开关按钮29致动的操作装置28相关联。单元25可以包括用于关闭阀的计时器在预定时间之后的21。止回阀33设置在喷嘴35的上游，并且单向排气阀38防止箱17的过压。箱16包含燃料蒸气，来自大气的氧气或从燃料释放的氧气，以及可能的气态N 2。如果O 2含量超过11％，并且产生残气，则检测器23、24打开阀21。液体N 2从喷嘴35呈液滴状喷射并蒸发稀释，并将残气冷却至燃烧停止点。如果需要手动控制，也可以通过按钮29打开阀21。选择具有直径和长度的导管15，以确保N 2至少部分以液体形式到达喷嘴35。
展开▼
