Anti-freezing corrugated pipe pressure gage
A pressure gauge and bellows technology, applied in the field of antifreeze bellows pressure gauge, can solve the problems of high pressure, condensation and freezing, inaccurate measurement, etc., and achieve the effect of fast heating, low cost and safety guarantee
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[0016] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0017] Such as figure 1 As shown, an antifreeze bellows pressure gauge includes a gauge head 1 and a joint 2, and the joint 2 is wrapped with an anti-overheating layer 4, a heating layer 5, a heat insulation layer 7, and an insulating layer in turn; the anti-overheating layer 4 is filled with There is antifreeze; the heating layer 5 , heat insulation layer 7 , and insulation layer are all provided with two through holes, and the heating resistance wire 6 is penetrated through the through holes and wound on the inner wall of the heating layer 5 . A bellows 3 serving as a pressure transmission device is arranged inside the joint 2 . The insulation layer 7 is filled with polyurethane foam. The insulating layer is a rubber sheath 8 .
[0018] When in use, antifreeze is filled in the anti-overheating layer 4, and the antifreeze does not fill the ...
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