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1. 发明申请

US20040129906A1 Cryogenic valve device 审中-公开
标题翻译：低温阀装置
公开(公告)号：US20040129906A1
公开(公告)日：2004-07-08
申请号：US10738510
申请日：2003-12-17
申请人： SNECMA MOTEURS
发明人： Franck Authelet , Michel Cramer , Damien Feger , Jean-Luc Pattyn
IPC分类号： F16K031/12 , F16K001/22
CPC分类号： F25B41/06 , F16K27/08 , F16K31/124 , F16K31/1635 , F16K31/363
摘要： The invention provides a cryogenic valve device comprising a valve body in which a cryogenic fluid flows, and a valve member disposed in the duct and connected to a control rod for moving the valve member between a closed position and an open position so as to control the flow rate of the cryogenic fluid. The device further comprises a pneumatic actuator having a chamber containing a piston in connection with the control rod, the chamber being fed with control gas to position the piston in a determined position. The actuator is fixed to the valve body via a chamber interposed between the actuator and the valve body in such a manner as to decouple the actuator thermally from the valve body so as to maintain the temperature of the actuator, and consequently the temperature of the control gas, at a temperature that is intermediate between the temperature of the valve body and ambient temperature. The chamber is at a positive pressure so as to prevent penetration from the outside and so as to exhaust any possible leaks into the device.
摘要翻译：本发明提供一种低温阀装置，其包括其中流过低温流体的阀体和设置在管道中并连接到控制棒的阀构件，用于使阀构件在关闭位置和打开位置之间移动，以便控制低温流体的流速。该装置还包括气动致动器，该气动致动器具有与控制杆连接的活塞的腔室，该腔室被供给控制气体以将活塞定位在确定的位置。致动器通过设置在致动器和阀体之间的腔室固定到阀体上，使得致动器与阀体热隔离，以便保持致动器的温度，并因此保持控制器的温度气体，其温度介于阀体的温度和环境温度之间。腔室处于正压力，以防止从外部渗透并且排出任何可能的泄漏到装置中。

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