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Method for improving gland packing evenness of pipeline compensator

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

Active Publication Date: 2013-04-24
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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  • Method for improving gland packing evenness of pipeline compensator
  • Method for improving gland packing evenness of pipeline compensator
  • Method for improving gland packing evenness of pipeline compensator

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0020] Such as figure 1 , figure 2 and image 3 As shown, the compensator whose end face of the sealing cavity is set as an inclined plane includes a compensator core tube 1, an outer sleeve 3 and a flange 2. The end of the outer sleeve 3 is welded with a tapered tube 4, and the core tube 1 is sleeved on the outer sleeve. 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 th...

Embodiment 2

[0025] The method for improving the uniformity of the sealing packing of the pipeline compensator includes the following steps: (1) setting the two end faces of the sealing chamber of the compensator 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 acting on the sealing packing on the two end faces points to the axis 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 g...

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Abstract

The invention discloses a method for improving gland packing evenness of a pipeline compensator and belongs to the technical field of pipeline compensators. The method includes: (1) arranging two end faces of a sealing cavity of the compensator into inclined surfaces; (2) placing a retainer when half of the sealing cavity is filled with gland packing, and then continuing to fill the gland packing into the sealing cavity; and (3) installing two end faces of the sealing cavity oppositely, enabling one end face to move toward the other end face, and enabling the force exerted on the gland packing through the two end faces to point to the axial direction of the compensator. By means of the method for improving the gland packing evenness of the pipeline compensator, the inclined surfaces and the retainer of the sealing cavity are utilized to extrude the gland packing toward the outer surface of a core pipe during pressing, the density of the gland packing is even, and the sealing effect is enhanced. The method for improving gland packing evenness of the pipeline compensator is simple in structure, low in cost, and convenient to install and maintain and prolongs service life of the compensator by more than 20%.

Description

technical field [0001] The invention relates to the technical field of pipeline compensators, in particular to a method for improving the uniformity of sealing packing of pipeline compensators. 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 surfaces of the ...

Claims

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Application Information

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