Self-sealing rotary compensator
A rotary compensator and self-sealing technology, which is applied to expansion compensation devices for pipelines, pipes/pipe joints/fittings, mechanical equipment, etc., can solve the problem of not being able to replenish sealing materials online, so as to avoid economic losses and facilitate injection , long service life effect
Inactive Publication Date: 2008-04-30
袁国庆
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Problems solved by technology
[0003] The present invention mainly aims at the deficiency that the prior art cannot supplement the sealing material on-line, and proposes a self-sealing rotary compensator with simple structure, flexible rotation and convenient on-line supplement of the sealing material
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Embodiment 2
[0015] Embodiment 2 has the same application occasions as Embodiment 1, except that the size of the diameter is different, and the number of radial through holes 11 provided on the outer wall of the housing 3 is different. The self-sealing rotary compensator with a diameter of 1000 mm in this embodiment is provided with 28 radial through holes 11 and screw plugs 6 on the outer wall of its housing 3, which can meet the requirements of online supplementary sealing material 6, and the specific operation is the same as that of the embodiment 1 is the same.
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The invention discloses a self-sealing rotary compensator, which comprises a radial rotation structure and a sealing axial compensation structure, wherein, the radial rotation structure consists of a casing sleeved on the external wall of an inner tube, sealing material, a gland and a ring, the right end of the casing hermetically connects with a diameter-variable pipe; the sealing axial compensation structure consists of a gland in series connection with a bolt, a casing, a spring and a compressing disc which matches with the clearance on the external wall at the right end of the casing. The ring is arranged between the inner tube and the inner step end surface of the casing to form a planar bearing; the external wall between a flange at the left end of the casing and the inner steps has uniformly distributed radial through holes; the external end of each radial through hole is provided with a plug screw. Leakage during the process of operation can be solved by dismounting the plug screws respectively and on-line replenishing sealing material into the radial through holes without suspension of the machine, thereby avoiding economic loss caused by suspension maintenance during non-maintenance periods. The invention is particularly suitable to be used as a rotary compensator matching large-sized thermal pipelines.
Description
technical field [0001] The invention relates to a pipeline compensator, in particular to a rotary compensator which realizes the axial balance or compensation of the thermal pipeline through the relative rotation of the inner tube and the casing. Background technique [0002] The rotary compensator is the most widely used pipeline compensation device in modern thermal pipelines. It uses the relative rotation of the inner tube and the shell to achieve axial balance or compensation of the thermal pipeline. In the process of realizing these functions, the outer wall of the inner tube and the matching sealing material have relative movement, which will inevitably cause slight mechanical wear of the sealing material. The "Maintenance-free Rotary Compensator" disclosed in Chinese Patent No. 200520074933.1 has a sealed axial elastic compensation structure, and the compensator can automatically provide sealing compensation. However, after the sealing material is excessively worn, t...
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IPC IPC(8): F16L51/00
Inventor 袁国庆
Owner 袁国庆
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