Horizontal hydraulic gas exhaust device for U-tube heat exchanger

The invention discloses a hydraulic gas exhaust device for a U-tube heat exchanger. The gas exhaust device comprises an upper-cavity gas exhaust device and a lower-cavity gas exhaust device, wherein the upper-cavity gas exhaust device and the lower-cavity gas exhaust device both comprise gas exhaust tubes (1) and pressure-bearing connecting tubes (2); the gas exhaust tubes (1) are used for introducing gases in the interiors of cavities into the pressure-bearing connecting tubes (2); the pressure-bearing connecting tubes (2) are used for communicating the gas exhaust tubes (1) with the exteriors of the cavities, so as to realize gas exhaust. The hydraulic gas exhaust device for the U-tube heat exchanger, which is provided by the invention, is simple in structure, convenient to mount, high in versatility and good in gas exhaust effect, can be used for reliably exhausting a residual gas in a U-tube, and the safety and the accuracy of a hydraulic test are guaranteed. 本发明公开了种U形管换热器水压排气装置，所述排气装置包括上腔室排气装置和下腔室排气装置，所述