Ultralow temperature gate valve

The utility model provides an ultralow temperature gate valve, mainly solving the problem that explosion and fire can be caused by gasification of media when the conventional ordinary gate valves are used in low temperature media. The gate valve is characterized in that a relief hole (8) is formed o...

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Bibliographische Detailangaben
Hauptverfasser:	WANG ZHONGYUAN, WU JIANBIN, WANG CHENGGAO, LIU XIANDE, LI SHUAI, SU JINGPAN, ZHOU YI, ZHANG WENGUANG, WANG CHENGDONG, SU MIAOHOU
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ACTUATING-FLOATS BLASTING COCKS DEVICES FOR VENTING OR AERATING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING TAPS THERMAL INSULATION IN GENERAL VALVES WEAPONS
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Beschreibung
Zusammenfassung:	The utility model provides an ultralow temperature gate valve, mainly solving the problem that explosion and fire can be caused by gasification of media when the conventional ordinary gate valves are used in low temperature media. The gate valve is characterized in that a relief hole (8) is formed on a flashboard (2) which corresponds to a high-pressure medium side and is arranged on a valve body (1); and when the flashboard (2) is closed, the relief hole (8) can enable a cavity between the flashboard (2) and a valve deck (5) to be communicated with high-pressure media. By adopting the gate valve, the problems that a valve rod and packing are easy to freeze, the valve rod is easy to damage and the valve is laboursome to be opened are solved. The gate valve has the characteristics of simple structure, safety and reliability, and flexibility for opening the valve.