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Pipeline compensator with seal cavity designed with inclined plane

A technology for pipeline compensators and sealing chambers, which is applied to expansion compensation devices for pipelines, engine seals, pipe components, etc., and can solve the problem of uneven density of sealing packing, decrease of sealing performance of compensators, and decrease of service life of compensators and other problems, to achieve the effect of enhancing the sealing effect, improving the sealing performance and improving the uniformity

Active Publication Date: 2013-04-17
JIANGSU BT PIPE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the plane right-angle structure of the sealing chamber of the existing compensator will lead to uneven density of the sealing packing up and down, resulting in a decrease in the sealing performance of the compensator
After the core tube of the compensator works, the compensator is easy to leak due to poor packing seal, resulting in a decrease in the service life of the compensator, increasing the maintenance cost of the user, and sometimes even having to stop production of the pipeline to replace the compensator, resulting in greater losses

Method used

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  • Pipeline compensator with seal cavity designed with inclined plane
  • Pipeline compensator with seal cavity designed with inclined plane
  • Pipeline compensator with seal cavity designed with inclined plane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Such as figure 1 , figure 2 with image 3 As shown, the sealing chamber is set as a pipeline compensator with an inclined plane, including a compensator core tube 1, an outer tube 3 and a flange 2. The end of the outer tube 3 is welded with a tapered tube 4, and the core tube 1 is sleeved on the outer tube. In the pipe 3, the outer casing 3 is connected with the flange 2, the inner surface of the outer casing 3 is provided with an annular stop ring, and one end face of the flange is provided with a convex ring, and the flange convex ring is connected with the outer surface of the core pipe 1, The inner surface of the limiting ring and the outer sleeve 3 forms a sealing cavity; the surface of the flange convex ring is set as an inclined plane 21, and the inner surface of the outer sleeve limiting ring is also set as an inclined plane 31, and the two inclined planes are symmetrically arranged to form the sealing chamber. Both ends of the cavity.

[0021] In this embod...

Embodiment 2

[0025] The method for improving the uniformity of the compensator sealing packing includes the following steps: (1) setting the two end faces of the compensator sealing cavity as inclined plane structures;

[0026] (2) When half of the sealing packing is added into the sealing cavity, put in the spacer ring, and then continue to add the other half of the sealing packing;

[0027] (3) Install the two end faces of the sealing chamber opposite to each other, so that when one of the end faces moves relative to the other end face, the force of the two end faces acting on the sealing packing points to the axial direction of the compensator.

[0028] The included angles between the two end faces of the sealing cavity and the axis of the compensator are equal, and are set as angle A, and the angle A is greater than 60 degrees and less than 80 degrees; the two end faces of the spacer ring are respectively provided with V-shaped grooves , The included angle of the V-shaped groove is set...

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PUM

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Abstract

The invention relates to a pipeline compensator with a seal cavity designed with inclined surfaces. The pipeline compensator comprises a core tube, an outer sleeve and a flange, a flange surface as well as an outer sleeve surface is designed into an inclined surface, an included angle A formed between the included surface of the flange and the outer surface of the core tube is larger than 60 degrees and smaller than 80 degrees, and an included angle formed between the included surface of the outer sleeve and the core tube is identical to the included angle A. Sealing filler and a partition ring are arranged in the seal cavity, V-shaped grooves are arranged on two end faces of the partition ring, and both included angles of the V-shaped grooves are 140 degrees. By the aid of included surfaces of the seal cavity and the partition ring, the filler is extruded towards the outer surface of the core tube when being pressed, the sealing filler can be uniform in density, and sealing effect is strengthened. The pipeline compensator with the seal cavity designed with the inclined surfaces is simple in structure, low in cost and convenient to mount and maintain, and service life of the pipeline compensator is prolonged by more than 20%.

Description

technical field [0001] The invention relates to the technical field of pipeline compensators, in particular to a compensator in which the end face of a sealing cavity is set as an inclined plane structure. Background technique [0002] Compensation devices are generally required to be installed and used in pipelines in electric power, petroleum, chemical industry, heat power and other industries. Existing compensation devices usually include rotary compensators, sleeve compensators, spherical compensators, etc. displacement. In particular, pipelines conveying high-temperature and high-pressure media have high requirements for compensators. The compensators must not only have sufficient displacement compensation, but also have the characteristics of good sealing performance and long service life. [0003] The sealing cavities of existing rotary compensators, sleeve compensators, and spherical compensators are generally plane right-angle structures, that is, two adjacent surf...

Claims

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Application Information

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IPC IPC(8): F16L51/00F16J15/06
Inventor 曹广金洪亮苏春
Owner JIANGSU BT PIPE CO LTD