Air tightness detection device for casing joint

Air tightness detection device for casing joint

  • CN 107,314,869 B
  • Filed: 07/06/2017
  • Issued: 08/07/2020
  • Est. Priority Date: 07/06/2017
  • Status: Active Grant
First Claim
Patent Images

1. The utility model provides a casing joint'"'"'s gas tightness detection device, its characterized in that, includes barrel (6) and sets up gasbag (7) at barrel (6) inner chamber both ends, be provided with gas pocket (37) in barrel (6) and with communicating air flue (36) of gasbag (7), air flue (36) intercommunication gasbag (7) with barrel (6) outer wall, gas pocket (37) communicate two barrel (6) inner chamber and barrel (6) outer wall between gasbag (7).

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