Integrated positive-negative pressure protection device with double displays

• Main Authors: TANG XIUZHONG, TIAN FAKE, XIONG JIAN, CHENG FUBAO
• Format: Patent
• Language: Chinese; English
• Published: 24.07.2013
• Subjects: BLASTING; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED,LIQUEFIED, OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; HEATING; LIGHTING; MECHANICAL ENGINEERING; STORING OF DISTRIBUTING GASES OR LIQUIDS; VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED ORSOLIDIFIED GASES; WEAPONS

The utility model relates to an integrated positive-negative pressure protection device with double displays. The device comprises an outer barrel body, an inner barrel body, an outer water level observing system and an inner water level observing system, wherein the upper end and the lower end of the outer barrel body are respectively provided with a top plate and a bottom plate, the inner barrel body is installed inside the outer barrel body, a water seal is installed between the bottom of the inner barrel body and the bottom plate, the top of the inner barrel body passes through the top plate then communicated with an air inlet and outlet system, a water inlet system and a pressure display system which are communicated with the interior of the outer barrel body are installed on the upward side of the top plate, the outer water level observing system and a connection installation system are installed on the outer barrel wall of the outer barrel body; the inner water level observing system comprises an inner