Tandem double-valve-plug one-way valve for high pressure and redundancy sealing

• Main Authors: JIA JINGWEI, CHEN WEIYU, WANG ZHIYONG, XIE NING, CHENG YAWEI, LEI HENG, FENG JUNHUA
• Format: Patent
• Language: Chinese; English
• Published: 12.06.2013
• 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 utility model relates to a tandem double-valve-plug one-way valve for high pressure and redundancy sealing, which comprises a housing, and a spring seat, a small spring, an outlet valve seat, an outlet valve plug, a large spring, an inlet valve seat and an inlet valve plug that are sequentially arranged in the housing, wherein one end of the small spring is fixed on the spring seat; the other end of the small spring presses the outlet valve plug on the outlet valve seat, and allows the outlet valve plug to be matched with the outlet valve seat in a sealing manner; the large spring is mounted on the outlet valve plug in a sleeving manner; one end of the large spring is fixed on the outlet valve plug; and the other end of the large spring presses the inlet valve plug on the inlet valve seat, and allows the inlet valve plug to be matched with the inlet valve seat in a sealing manner. The one-way valve adopts a double-valve-plug tandem form, and a structure adopts a redundancy design; when the one-way valve i