SAFETY VALVE FOR LOW-TEMPERATURE THERMAL INSULATION GAS CYLINDER

摘要

The invention relates to a safety valve for a cryogenic insulated gas cylinder, which comprises a valve body, and the valve body further comprises a gas inlet flow channel, a valve seat, a slide way, a valve core and a spring, a gas inlet connecting thread and an adjusting nut. An adjusting nut exhaust hole set on said adjusting nut, a spring set between the said adjusting nut and a spring bracket with an exhaust hole. A valve assembly further comprises the valve core, a plurality of guide rings, a positioning steel ball and a valve flap, a valve core exhaust hole is provided in the valve core. The safety valve has high stability in discharge pressure and return pressure, high repeatability and good sealing performance, and is firm in structure, difficult to be damaged and high in safety.

主权项

1. A safety valve for a cryogenic insulated gas cylinder, comprising: a valve body, wherein the valve body comprises a gas inlet flow channel, a valve seat, a slide way, a valve core and a spring, which are arranged in the valve body a gas inlet connecting thread is provided on an outer wall of a gas inlet end of the valve body, an adjusting nut is provided at a gas outlet end of the valve body, and the adjusting nut is provided with an adjusting nut exhaust hole, the spring is disposed between the adjusting nut and a spring bracket with an exhaust hole: a valve assembly is provided in an inner cavity of the valve body below the spring bracket, the valve assembly is formed by the valve core, guide rings arranged on the outer wall of the valve core, a positioning steel ball and a valve flap, a valve core exhaust hole is provided in the valve core, the spring bracket with the exhaust hole is disposed on the positioning steel ball, and the valve flap is positioned on and in tight fit with the valve seat.