LNG vacuum tube detection device

The utility model relates to a LNG vacuum tube detection device, including a LNG vacuum tube and the 2nd LNG vacuum tube, a LNG vacuum tube passes through the third vacuum tube and connects the 2nd LNG vacuum tube, the third vacuum tube with vacuum metal insulating layer has been registrated to the periphery of a LNG vacuum tube, the 2nd LNG vacuum tube junction, be equipped with temperature sensor in the metal insulating layer of vacuum, temperature sensor is connected with temperature transmitter, the inlet end of a LNG vacuum tube is connected with the solenoid valve, the solenoid valve with temperature transmitter is connected with PLC processing terminal. The detection that the LNG pipeline leaked and became invalid in the vacuum that the device had solved secret landfill detects the problem, has high efficiency, promptness to can make when LNG reveals and promptly cut off the air feed processing, ensure the LNG pipeline safety operation. 本实用新型涉及种LNG真空管检测装置，包括第LNG真空管和第二LNG真空管，所述第LNG真空管通过第三真空管连接所述第二LNG真空管