E61751 HALON Pressure Reducer【部件介绍】

HALON减压器

一、名称

HALON Pressure Reducer

HALON减压器

二、件号

D41428-SERIES/D41552-SERIES/E61751-00-0001/E61751-00-0002/E61751-00-0003/E62691-00

三、章节号

26-20-10

四、适用机型

A319/A330/A340

五、系统

26 FIRE PROTECTION

防火

六、安装位置

货舱

七、部件原理

A. In a not pressurized condition, the poppet of the HALON Pressure Reducer is held in open position by the spring force of the pressure adjustment spring.

在未加压的情况下，HALON减压器的提升阀通过压力调节弹簧的弹簧力保持在打开位置。

B. If a pressurized gas flows through the inlet port, and the outlet end of the system is closed with a valve, it pressurizes the diaphragm, generating a counter-force against the pressure adjustment spring force.

如果加压气体流经入口，系统的出口端用阀门关闭，它会对膜片加压，产生对抗压力调节弹簧力的反作用力。

C. The pin moves down guiding the poppet into the sealing orifice. The poppet will close the flow inside the HALON Pressure Reducer. At the same time the pin moves down and the poppet assembly closes by its spring force.

销向下移动，引导提升阀进入密封孔。提升阀将关闭HALON减压器内的流量。同时，销向下移动，提升阀组件通过其弹簧力关闭。

D. The flow of the gas into the inlet port stops.

进入进气口的气流停止。

E. When the downstream side of the system is opened, the gas flows out. The pressure to the diaphragm and thus the counter-force against the pressure adjustment spring force is released.

当系统的下游侧打开时，气体流出。膜片上的压力以及抵抗压力调节弹簧力的反作用力被释放。

F. Because of the higher pressure adjustment spring force, the pin moves the poppet up, and new gas flows into the unit.

由于较高的压力调节弹簧力，销向上移动提升阀，新的气体流入装置。

G. With a steady flow through the HALON Pressure Reducer, the operating force balance between the adjustment spring, the diaphragm, and the poppet spring is set. This balance will fix the poppet at the required position to provide the pressure drop, and gas flow, needed.

通过HALON减压器的稳定流量，调节弹簧、膜片和提升阀弹簧之间的操作力平衡得以设定。这种平衡将提升阀固定在所需的位置，以提供所需的压降和气流。

八、工作参数

九、在飞机系统中的工作原理及其互联

安装在2号bottle，起延时作用，当1号使用以后，2号保持缓慢释放

The HALON Pressure Reducer is a mechanical device which has the function to decrease the high pressure of gases or liquids to a lower constant operating system pressure. This unit operates independently on the entry pressure or flow changes. The HALON Pressure Reducer installed in the aircraft is a part of the flow metering system of the fire extinguishing system for cargo compartments. HALON 1301 (CBrF3) gas is used in the fire extinguishing system. The gas is let out flow metered by interaction of the pressure reducer with a specific diaphragm.

HALON减压器是一种机械装置，其功能是将气体或液体的高压降低到较低的恒定操作系统压力。该装置在入口压力或流量变化时独立运行。安装在飞机上的HALON减压器是货舱灭火系统流量计量系统的一部分。灭火系统使用HALON 1301（CBrF3）气体。通过减压器与特定膜片的相互作用对气体进行流量计量。

FMS DESCRIPTION

A flow metering system is installed on the discharge outlets of bottle 2. It makes sure that a constant flow is maintained for 240 minutes. The FMS is composed of a check valve, a halon filter, a restrictor, a pressure reducer and a pressure switch. The discharge pressure switch sends a signal to the SDCU when a flow of the bottle agent is detected in the flow metering system.

FMS描述

Bottle 2的出液口安装了流量计系统，确保240分钟内保持恒定流量。FMS由单向阀、halon过滤器、限流器、减压器和压力开关组成。当流量计系统检测到瓶剂流动时，压力开关会向SDCU发送信号。