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High-pressure packing sealing structure

A stuffing sealing and high pressure technology, which is applied in engine sealing, heat exchanger sealing device, lighting and heating equipment, etc. It can solve the problems that the inner tube of non-metallic heat exchanger cannot withstand high pressure, cannot be welded and sealed, and the strength is difficult to balance.

Pending Publication Date: 2022-05-10
广州埃萌机电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The inner and outer tubes of high-pressure pipelines can generally be sealed by welding or packing. For the high-pressure pipeline sealing between metal outer tubes and metal inner tubes, the sealing performance can be easily obtained by welding and sealing, but later maintenance is difficult. , For example, it is difficult to unblock after the pipeline is blocked; the general metal inner tube is not corrosion-resistant and cannot be used for corrosive high-pressure pipelines by using the packing seal method; and for the corrosion-resistant non-metallic inner tube and the metal outer tube (outer tube) Sealing of high-pressure pipelines, such as silicon carbide microchannel reactors and graphite heat exchangers in non-metallic heat exchangers, the non-metallic inner tube and metal outer tube cannot be welded and sealed, and the inner and outer tubes of conventional high-pressure pipelines use The annular structure formed by the cylindrical cavity and the inner tube, the packing seal of the conventional annular structure is difficult to balance when it is tightly held inward, which may easily cause the rupture of the inner tube, and the inner tube of the conventional non-metallic heat exchanger cannot withstand high pressure

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0021] according to Figure 1-3 As shown, a high-pressure packing seal structure includes a metal or non-metallic inner tube 1, an outer tube (shell) and a packing seal structure connecting the inner tube 1 to the outer tube (shell), a conventional cylindrical packing seal, It is difficult to balance the strength of the inward hugging, which will easily lead to the rupture of the inner tube 1, and the non-metallic inner tube 1 and the metal outer tube cannot be welded, so that the existing non-metallic sleeve heat exchanger, such as silicon carbide Microchannel reactors, graphite heat exchangers, etc., cannot withstand high pressure.

[0022] In the present invention, the packing sealing structure includes a T-shaped sealing pressure ring sleeve 3 set on the inner tube 1, a wedge-shaped inclined packing structure 2, a flange flange joint 4 and the wedge-shaped inclined packing structure 2. A limited and fixed inner compression stopper 5. The T-shaped sealing compression ring ...

Embodiment 2

[0025] The difference from Example 1 is that the wedge-shaped inclined-plane packing structure 2 includes a conical packing cavity 21, a conical packing compression ring sleeve 22 and a diamond-shaped packing compression ring sleeve 23, and the diamond-shaped packing compression ring sleeve 23, conical packing The packing compression ring sleeve 22 and the conical packing cavity 21 are sequentially set on the sleeve part 31 of the T-shaped sealing compression ring sleeve 3, and pass through the conical packing under the limit of the inner compression stopper 5 The cooperation of the cavity 21, the tapered packing ring sleeve 22 and the rhombic packing ring sleeve 23 converts the axial thrust into an inwardly embracing radial sealing force, so that the wedge-shaped inclined packing structure 2 is pressed and connected to the On the casing portion 31 of the T-shaped sealing compression ring sleeve 3 , the T-shaped sealing compression ring sleeve 3 is attached to the outer wall of...

Embodiment 3

[0033] The difference from Example 2 is that: the wedge-shaped inclined packing structure 2 also includes an automatic compensation spring device 24, and the automatic compensation spring device 24 is sleeved on the inner tube 1, and generally can be sleeved on the inner tube 1, one end of the self-compensating spring device 24 resists on the inner compression block 5, and the other end resists on the wide surface of the tapered packing pressure ring sleeve 22, and continuously supports the tapered The stuffing ring sleeve 22 produces axial thrust.

[0034] Specifically, the self-compensating spring device 24 provides a continuous axial thrust, and the tapered packing pressure ring sleeve 22 in the wedge-shaped inclined packing structure 2 amplifies the thrust and converts it into a circumferential seal evenly tightened inward. pressure.

[0035] The compressed length and strength of the spring of the automatic compensation spring device 24 can be adjusted according to the ac...

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Abstract

The high-pressure packing sealing structure comprises an inner pipe, an outer pipe and a packing sealing structure body, the packing sealing structure body comprises a T-shaped sealing pressing ring sleeve, a wedge-shaped inclined plane packing structure, a flange flanging connector and an inner pressing check block for limiting and fixing the wedge-shaped inclined plane packing structure, and the T-shaped sealing pressing ring sleeve is provided with a sleeve part and a flange part which are integrally formed; the sleeve part is sleeved on the inner pipe, the wedge-shaped inclined plane packing structure and the flange turnup joint are respectively compressed and connected on the sleeve part and the flange part in the radial direction and the axial direction, an axial sealing surface is respectively formed between the sleeve part and the outer wall of the inner pipe, and a radial sealing surface is respectively formed between the flange part and the flange turnup joint. The inner pipe can be evenly and tightly held in a large area, the inner pipe is not prone to being broken, and the effect of high-pressure sealing without inner pipe fracturing is achieved; meanwhile, the reactor also has the functions of being detachable and cleaning internal blockage, and can solve the problems that the micro-channel reactor in the chemical industry cannot resist high pressure and is difficult to dredge after being blocked.

Description

technical field [0001] The invention relates to the technical field of static packing seals, in particular to a high-pressure packing seal structure. Background technique [0002] The inner and outer tubes of high-pressure pipelines can generally be sealed by welding or packing. For the high-pressure pipeline sealing between metal outer tubes and metal inner tubes, the sealing performance can be easily obtained by welding and sealing, but later maintenance is difficult. , For example, it is difficult to unblock after the pipeline is blocked; the general metal inner tube is not corrosion-resistant and cannot be used for corrosive high-pressure pipelines by using the packing seal method; and for the corrosion-resistant non-metallic inner tube and the metal outer tube (outer tube) Sealing of high-pressure pipelines, such as silicon carbide microchannel reactors and graphite heat exchangers in non-metallic heat exchangers, the non-metallic inner tube and metal outer tube cannot ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/10F28F11/02
CPCF16J15/104F16J15/102F16J15/061F28F11/02
Inventor 张千钦
Owner 广州埃萌机电科技有限公司
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