The low-pressure
gas balloon sealing head comprises a sealing
balloon, an inflation
assembly, a connecting
assembly and a guiding
assembly, the sealing
balloon is composed of a
balloon front pressing plate, a balloon body and a balloon rear pressing plate, the inflation assembly is composed of an inflation
pipe, a
ball valve, a pressure gauge, a connecting wire head A, a connecting wire head B and a connecting
pipe, the connecting assembly is composed of a sealing device connecting sleeve, a vertical plate, a rotating pin shaft and a supporting plate, and the guiding assembly is composed of two guiding plates, a rotating shaft and a guiding
pulley.The balloon sealing head adopts high-elasticity material, the surface of the balloon body is provided with a plurality of annular sealing protrusions, the sealing effect is enhanced to ensure that the balloon body is closely combined with the inner wall of the pipeline, different deformation conditions are adapted, the structure is compact and simplified, installation and dismounting are more convenient, the
operation time is greatly shortened, a
pressure monitoring assembly is installed at the same time, the sealing effect is monitored in real time, gas leakage is effectively prevented, and
operation safety is improved.