Non-maintaining sleeve compensator with double sealing structures
A sleeve compensator and sealing structure technology, applied in the direction of adjustable connections, pipes/pipe joints/fittings, passing components, etc., can solve the problems of reduced maintenance workload, achieve reduced wear rate, reliable sealing, and reduced displacement reaction force effect
Active Publication Date: 2012-08-29
LUOYANG SUNRUI SPECIAL EQUIP
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Problems solved by technology
Years of use have shown that the sealing performance of the second-generation sleeve compensator has improved to a certain extent, and the maintenance workload has been reduced to a certain extent, but there are still problems that require frequent maintenance.
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[0011] Such as figure 1 As shown: the maintenance-free sleeve compensator with double sealing structure of the present invention is mainly composed of an outer tube (1), a special lip seal (2), an "O" type seal (3), a floating seal ring ( 4), composed of polytetrafluoroethylene packing (5), packing gland (6), compression bolt (7), composite core pipe (8).
[0012] When working, the hardened "O" rubber seal ring in the lip rubber seal structure plays a role in shaping, and is used to ensure the minimum opening volume of the special lip seal ring. When the pressure in the pipeline rises, it floats between the medium pressure and Under the combined action of the pressure ring, the two lips of the special lip seal ring are closely attached to the stopper on the outer tube and the surface of the core tube to achieve a sealing effect; on the other hand, the sealing packing is floating in the middle of the pressure ring and the packing Under the action of the pressing force of the g...
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The invention provides a non-maintaining sleeve compensator with double sealing structures, mainly comprising an outer tube (1), a special lip-shaped sealing ring (2), an O-shaped sealing ring (3), a floating sealing ring chuck ring (4), polyfluortetraethylene filler (5), a filler gland (6), clamping bolts (7) and a compound core tube (8). Both lip edges of the special lip-shaped sealing ring (2)are respectively and tightly attached to a stopper on the outer tube (1) and the surface of the compound core tube (8) to achieve the sealing effect by the increase of in-tube pressure and the joint action of medium pressure and a middle floating chuck ring when the non-maintaining sleeve compensator is in working; on the other hand, the sealing filler is tightly attached to the outer tube (1) and the surface of the compound core tube (8) to achieve the sealing effect under the clamping force action of the middle floating chuck ring and the filler gland (6); and the two sealing structures arecombined to act so that the sleeve compensator can achieve the ideal sealing effect for a long time. The invention not only effectively overcomes the defects of the prior art, but also has the advantages of low friction factor, good safety, low price, and the like.
Description
technical field [0001] The invention belongs to the technical field of sleeve compensators, and in particular relates to a sleeve compensator used for accessories of urban heating pipelines. Background technique [0002] The sleeve compensator is the most traditional pipeline compensator. The sleeve compensator is generally sealed by packing. One side of the end tube is designed with a stuffing box, and the other side is a core tube. The stuffing is pressed in the stuffing box through the gland. Reality. During operation, the core tube slides in the stuffing box to realize compensation. The first-generation sleeve-type compensator with packing as sealing material leaks due to the wear of the sealing layer during use, which has the fatal disadvantage of having to stop using and replace the packing, which adds a lot of workload to the maintenance of the pipeline . The second-generation sleeve compensator adds an injectable packing device on the basis of the first generation...
Claims
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IPC IPC(8): F16L27/12
Inventor 张爱琴钟玉平党如战闫廷来
Owner LUOYANG SUNRUI SPECIAL EQUIP