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Dual-seal filling rotary compensator

A rotary compensator and injection filling technology, which is applied to expansion compensation devices for pipelines, pipes/pipe joints/fittings, mechanical equipment, etc., can solve the problem of rotary compensator leakage, which cannot be eliminated in time, and cannot be repaired online and other problems to achieve the effect of improving the sealing effect, eliminating hidden dangers of leakage, and simple double-seal structure

Inactive Publication Date: 2012-12-19
JIANGSU HUADIAN PIPELINE EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because there is no pressurized leakage repair structure in the rotary compensator of the prior art, once the rotary compensator leaks excessively, it cannot be repaired or filled online, resulting in the leakage of the rotary compensator not being eliminated in time, which is easy to cause safety hazards

Method used

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  • Dual-seal filling rotary compensator

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Embodiment Construction

[0012] The present invention will be further described below according to the accompanying drawings and in conjunction with the embodiments.

[0013] figure 1 The double-seal filling type rotary compensator shown includes inner pipe 1, fastener 2, gland 3, outer pipe 4, left packing 5, filling valve 6, right packing 7, sealing ring 8 and connecting pipe 9 . The outer wall of the right end of the inner tube 1 is provided with an annular step, and the outer tube is also provided with an annular step. The inner tube 1 is inserted into the sleeve from the right end of the outer tube 4, and the step on the outer wall of the inner tube 1 is located on the right side of the step on the inner wall of the outer tube 4, and a sealing ring 8 and a right packing 7 are set between the two steps to form a secondary sealing structure. The auxiliary sealing structure only plays a sealing role when the inner tube 1 produces axial displacement to the left, and is in a loose state at other tim...

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PUM

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Abstract

The invention discloses a dual-seal filling rotary compensator which comprises an inner tube, a fastener, an outer tube, a left packing, filling valves, a right packing, a sealing ring and an adapter tube. The inner tube is sleeved with the outer tube; and the adapter tube is connected with the right end of the outer pipe in a sealed mode to form an axial limiting inner tube. The left packing is plugged into a gap between the left sections of the inner tube and the outer pipe and is locked on a flange edge of the outer tube by a gland and the fastener to form a main sealing structure. The sealing ring and the right packing are sleeved between steps of the inner tube and the outer tube to form an auxiliary sealing structure. 4 to 16 filling valves communicated with a main sealing cavity are uniformly distributed on the outer wall of the outer tube to form an online leakage compensation structure. The dual-seal filling rotary compensator is of a dual-seal structure and has a good sealing effect. Importantly, in the using process of the dual-seal filling rotary compensator, once the main sealing structure is leaked, the left packing can be filled by the filling valves to recover the sealing under the condition that the regulation is invalid. The dual-seal filling rotary compensator is simple to carry out online maintenance and is easy to operate; the shutdown maintenance cost is greatly reduced and the potential safety hazard caused by the leakage is also avoided.

Description

technical field [0001] The invention relates to a pipeline safety device, in particular, the invention relates to a rotation compensator. Background technique [0002] The rotary compensator belongs to a kind of pipeline safety device. It uses the relative rotation between the inner and outer tubes to realize the displacement compensation and angular compensation of the connected pipelines caused by thermal deformation. This type of compensator is simple in structure, strong in pressure bearing capacity and flexible in rotation. It has been widely used in industrial heating networks and has achieved good results. The sealing structure in the rotary compensator is the key structure. The sealing structure belongs to the packing type shaft sleeve sealing structure, and it is required to maintain sealing in both static and dynamic conditions. It is not difficult to achieve sealing at the initial stage of product installation, but it is not easy to maintain good sealing performa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L51/00
Inventor 刘忠军蒋礼萍
Owner JIANGSU HUADIAN PIPELINE EQUIP
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