抗H_2S腐蚀的HH-PSL3G-PR2级气密封闸阀研制

Design and Manufacture of Anti-H_2S Corrosion Gate Valve of Level HH-PSL3G-PR2 with Gas Seal

为了开发高含硫的天然气藏,需解决完井井口装置及采气树中闸阀的腐蚀和高压气密封问题。研制了抗H2S腐蚀的HH-PSL 3G-PR2级气密封闸阀。介绍了高含硫气田的腐蚀危害及对闸阀设计、选材、制造和检验等方面的要求。重点介绍了该闸阀的结构及设计要点、阀体及阀盖内腔堆焊工艺、关键部位加工及密封件采购难点,并提出解决办法。

In order to develop the high sulfur content gas reservoirs,completion wellhead and gas production tree gate valve corrosion and high pressure gas seals are addressed. The HH-PSL 3G- PR2 grade gas sealing gate was developed for anti-H2S corrosion. Corrosion hazard of high-sulfur gas fields and the gate valve design, material selection, manufacturing and inspection requirements are introduced. Focus points of the structure and design of the valve,the valve body and the valve cover the intracavity sur{acing process, key paris of the processing and seals procurement di{ficul ties and propose solutions are presented as well.