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High temperature rotary seal joint

A rotary sealing joint, high temperature technology, applied in the direction of pipes/pipe joints/fittings, adjustable connections, passing elements, etc., can solve the failure of the spring and the sealing ring, the spring and the sealing ring cannot withstand high temperature, and the rotary joint no longer has a seal performance and other issues, to achieve good high temperature resistance, improve sealing effect, and enhance the effect of sealing effect

Inactive Publication Date: 2019-08-30
北京宏帆态金节能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing rotary joint mainly relies on the elastic force of the spring to squeeze and fix the inner tube, and then cooperates with the flexible sealing ring to achieve the effect of sealed transportation. However, neither the spring nor the sealing ring can withstand high temperature. Once the temperature exceeds 400 ° C, the spring and the sealing ring will fail , causing the rotary joint to no longer have good sealing performance, so that the rotary joint cannot be used normally

Method used

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  • High temperature rotary seal joint

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Such as figure 1 As shown, the high temperature rotary sealing joint of this embodiment includes a shell 10 and an inner tube 20; as figure 2 As shown, the right end of the inner tube 20 is the inlet end 21, the left end of the inner tube 20 is the outlet end 22, the outlet end 22 of the inner tube 20 is inserted into the outer shell 10 from the right end of the outer shell 10, and the outer shell 10 and the inner tube 20 can rotate relatively ; Wherein, the inner tube 20 is a fixed part, and the shell 10 is a rotating part. The left end of the shell 10 is provided with an outlet to communicate with the inner tube 20, so that the fluid enters from the inlet end 21 of the inner tube 20, and then is discharged from the outlet of the shell; the left end of the shell 10 is provided with a flange 13, and the shell 10 passes through the flange 13 It is fixed with the rotating part, so that when the rotating part rotates, it will simultaneously drive the casing 10 to rotate ...

Embodiment 2

[0041] The difference between the second embodiment and the first embodiment is that in the second embodiment, the first static sealing ring is not provided, and the second pressure ring and the round nut used to compress the first static sealing ring are not provided; only the dynamic sealing ring and the The second static sealing ring seals the rotary joint, which can make the structure simpler. It is suitable for occasions where the working environment temperature is 600°C-700°C and the running time is relatively short.

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Abstract

The invention relates to the technical field of seal devices, in particular to a high-temperature rotary seal joint. According to the rotary joint, a spring is replaced in the way that a wedge ring squeezes a seal ring, the seal ring is expanded outwards, and an effect of radial seal is achieved; meanwhile, the side of the seal ring abuts against the end face, and the aim of axial seal is achieved. In this way, the problem about seal in two directions is effectively solved. In the temperature resisting aspect, the graphite-infiltrated asbestos seal ring is selected as a seal material, while the highest work temperature is about 700-800 DEG C in the current working condition, the seal ring can work in a high-temperature environment of 1000 DEG C, and the safety margin of 200 DEG C is reserved so that equipment can operate in a long time. Besides, in consideration of a certain lubrication action of graphite on steel products, the graphite-infiltrated asbestos seal ring is selected, and the great frictional force generated when the seal ring makes contact with the side wall can be overcome.

Description

technical field [0001] The invention relates to the technical field of sealing devices, in particular to a high-temperature rotary sealing joint. Background technique [0002] Rotary joints are used to connect and seal fluid media such as oil, steam, water, and gas from static pipelines to rotating equipment. According to different practical conditions, rotary joints are suitable for fluid media under different pressures, speeds and temperatures. . [0003] The existing rotary joint mainly relies on the elastic force of the spring to squeeze and fix the inner tube, and then cooperates with the flexible sealing ring to achieve the effect of sealed transportation. However, neither the spring nor the sealing ring can withstand high temperature. Once the temperature exceeds 400 ° C, the spring and the sealing ring will fail , As a result, the rotary joint no longer has good sealing performance, so the rotary joint cannot be used normally. At present, a rotary joint that can op...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L27/08
Inventor 杨帆
Owner 北京宏帆态金节能科技有限公司