Water plugging device for petroleum pipeline maintenance
A technology of oil pipelines and water stoppers, which is applied in the direction of pipe components, pipes/pipe joints/fittings, mechanical equipment, etc., which can solve problems such as easy blockage of pipes, failure of water blocking, and unclean dismantling, so as to ensure the sealing effect , Guaranteed plugging performance and good sealing effect
Active Publication Date: 2015-08-05
JIANGSU PROVINCE JINFENG PETROLEUM MACHINERY MFG CO LTD
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The invention discloses a water plugging device for petroleum pipeline maintenance. The water plugging device comprises a gasbag body and an exhaust pipe which is arranged at the end of the gasbag body. A plurality of grooves are formed in the outer circumferential wall of the middle of the gasbag body. Two elastic metal sheets are arranged in each groove in a spaced mode, and the bent part in each elastic metal sheet is fixedly provided with a reinforcing pad. When the gasbag body is inflated, the two elastic metal sheets in each groove deform to expand outwards in the radial direction of the gasbag body. Pressure in a gasbag is gradually increased, elastic deformation is made to occur to the elastic metal sheets, and the elastic metal sheets expand outwards in the radial direction of the gasbag body until the elastic metal sheets make contact with the inner wall of a pipeline. In the outward expansion process, elastic force generated by the deformation of the elastic metal sheets directly acts on scale on the inner wall of the pipeline and crushes the scale; the reinforcing pads fixed on the elastic metal sheets can weaken the impact strength between the scale and the elastic metal sheets, and the problem of stress concentration of the elastic metal sheets is solved.
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