Reliable emergency cut-off device of valve in high-temperature environment for low-temperature flammable medium tank

• Main Author: QU LAISHENG
• Format: Patent
• Language: Chinese; English
• Published: 09.11.2016
• Subjects: 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

The invention discloses a reliable emergency cut-off device of a valve in a high-temperature environment for a low-temperature flammable medium tank. The device comprises a cut-off valve body, wherein a valve body inlet inner cavity connected to the outlet of a low-temperature medium storage tank and a valve body outlet inner cavity connected to a low-temperature medium conveying pipeline are arranged in the valve body; the inlet inner cavity and the outlet inner cavity communicate through a connecting channel; a valve clack which is arranged on the inlet inner cavity side of the valve body is driven by a piston rod to block or open the connecting channel, and a sealing member is arranged on the valve clack; a temperature-controlling channel is further arranged on the valve body, the temperature-controlling channel communicates with the inlet inner cavity of the valve body and is connected to a deflating pipeline, and a deflating valve is arranged on the deflating pipeline. The device disclosed by the inventi