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Low-temperature main sealing structure

A technology of main seal and main seal, which is applied in the direction of engine seal, adjustable connection, pipe/pipe joint/pipe fitting, etc. Increase the sealing surface, increase the service life, and enhance the effect of the sealing effect

Pending Publication Date: 2020-11-17
连云港苏港石化设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a low-temperature main seal structure, which can solve the technical problems of frequent replacement of vulnerable parts such as seals of loading and unloading arms due to leakage of rotary joints in actual use of current seals, and increase the cost of operation and maintenance.

Method used

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  • Low-temperature main sealing structure
  • Low-temperature main sealing structure

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Please refer to figure 1 As shown, the present invention provides a low-temperature primary seal structure, including a primary seal 2 and a secondary seal 6. The primary seal 2 includes an end surface 1 on the main sealing surface and a lower end surface 3 on the primary sealing surface, and the secondary seal 6 includes a secondary sealing side seal Surface 4, the lower end surface 8 of the secondary seal and the upper end surface 9 of the secondary seal. The secondary seal 6 is fitted and fixed on the outer surface of the main seal 2. The inner part of the outer end of the part 2 and the secondary seal 6 is fixedly connected with a spiral spring clip 5, the end of the secondary seal 6 is a spherical structure, and the surface of the side sealing surface 4 of the secondary seal is an arc-shaped structure;

[0022] Effectively solve the problem of poor sealing of the rotary joint, change the double-sided dynamic seal of the seal to a relatively single-sided dynamic sea...

Embodiment 2

[0024] Please refer to figure 1 and figure 2 As shown, the present invention provides a low-temperature primary seal structure, including a primary seal 2 and a secondary seal 6, the outer wrapping of the primary seal 2 and the secondary seal 6 is provided with a protective sleeve 13, and the port of the protective sleeve 13 is provided with a cover 12. The protective cover 13 is a hollow cylindrical structure, and the end surface of the cover 12 and the protective cover 13 is bonded and fixed;

[0025] The protective sleeve 13 wraps and covers the outside of the fixing part, which effectively prevents the wearing of the fixing part during transportation, and solves the current problem that the sealing surface of the sealing part is easy to be worn by the outside during transportation and storage, thereby affecting the sealing effect of the sealing part.

Embodiment 3

[0027] Please refer to figure 1 and figure 2 As shown, the present invention provides a low-temperature main seal structure, including a main seal 2 and a secondary seal 6, the outer surface of the secondary seal 6 is provided with a fixing band 7, and the fixing band 7 is fixed at the central point of the axis of the secondary seal 6, One end of the fixing belt 7 is glued and fixed with the secondary seal 6, the end angle of the fixing belt 7 is a circular arc structure, the outer surface of the fixing belt 7 is fixedly connected with a label sticker 10, and the outside of the end of the fixing belt 7 is provided with a sleeve hole 11 ;

[0028] Through the hole 11 of the fixing belt 7, it is convenient to take the seal. The outer label 10 of the fixing belt 7 records the information of the fixing. The fixing belt 7 can be removed without affecting the normal use of the fixing, which solves the inconvenience of taking the seal. The problem.

[0029] The low-temperature ma...

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Abstract

The invention discloses a low-temperature main sealing structure. The low-temperature main sealing structure comprises a main sealing piece and a secondary sealing piece, wherein the main sealing piece comprises a main sealing face upper end face and a main sealing face lower end face, the secondary sealing piece comprises a secondary sealing side face sealing face, a secondary sealing lower end face and a secondary sealing upper end face, and the secondary sealing piece is attached and fixed to the outer side surface of the main sealing piece. The axis of the secondary sealing piece and the axis of the main sealing piece are located on the same straight line, spiral spring clamps are fixedly connected into the outer end of the main sealing piece and the outer end of the secondary sealingpiece, the end of the secondary sealing piece is of a spherical structure, and the surface of the sealing face of the side face of the secondary sealing piece is of an arc-shaped structure. The integrated sealing piece is adopted, the concentricity of all integrated sealing faces is guaranteed, the sealing faces are increased, and the sealing performance of liquid and gas passing through the sealing piece is more effectively guaranteed, so that the service life of the sealing piece is prolonged, and the sealing effect of the sealing piece is enhanced.

Description

technical field [0001] The invention relates to the technical field of rotary joint sealing, in particular to a low-temperature main sealing structure. Background technique [0002] At present, the seals of low-temperature rotary joints of fluid loading and unloading arms in the cryogenic industry are all in the form of double seal structure, that is, the main seal and the secondary seal. Because the primary and secondary sealing surfaces are double-sided seals, that is, the front and back of the seal are both sealing surfaces. At present, There are still various deficiencies in the seals on the market, which cannot meet the needs of production and life; [0003] Leakage at any point on the positive and negative sealing surfaces will cause leakage of the overall rotary joint. In actual use, the leakage of the rotary joint will cause frequent replacement of vulnerable parts such as the loading arm seal and increase the cost of operation and maintenance. For this reason, we pr...

Claims

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Application Information

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IPC IPC(8): F16L27/08F16J15/3252F16J15/3268F16J15/3284
CPCF16J15/3252F16J15/3268F16J15/3284F16L27/08
Inventor 姜怀超汪梁
Owner 连云港苏港石化设备有限公司