Large compensation external pressure expansion joint with heat preservation reset

An expansion joint and compensation technology, which is applied in the field of large compensation external pressure bellows expansion joints, can solve the problems of uneven deformation of bellows, poor stability, and large expansion joint compensation, so as to prevent vacancies and meet fatigue life , the effect of reducing the number of

Active Publication Date: 2016-06-08
AEROSUN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The multi-segment bellows series structure is adopted to increase the compensation amount of the expansion joint, and a displacement equalizing component is installed between each segment of the bellows. The displacement equalizing component solves the uneven and stable deformation of each segment of the bellows in the multi-segment series structure. Poor performance and other problems, so that the stretching displacement of each section of bellows is the same, to achieve uniform compensation of each section of bellows, to avoid tensile damage caused by excessive deformation of a single bellows, and to improve the fatigue life of the expansion joint

Method used

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  • Large compensation external pressure expansion joint with heat preservation reset
  • Large compensation external pressure expansion joint with heat preservation reset
  • Large compensation external pressure expansion joint with heat preservation reset

Examples

Experimental program
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Embodiment 1

[0021] In this embodiment, the large compensation external pressure expansion joint with thermal insulation reset has a structure as follows figure 1 As shown, it includes an outer tube 15 and an inner tube 9 installed in the outer tube 15. One end of the inner tube 9 is covered with a guide tube 24, and the guide tube 24 is externally connected to the end tube 8. The right end of the end tube 8 is provided with a first pressure bearing ring plate 10, and the upper end of the first pressure bearing ring plate 10 is fixed on the left end of the outer tube 15, and the lower end is fixed on the outer wall of the end tube 8. A first axial displacement gap is provided between the first pressure bearing ring plate 10 and the inner pipe 9, and a guide tube 24 is arranged in the first axial displacement gap, so that the inner tube 9 passes through the guide tube 24 and the end pipe 8 are inserted into each other, so that the inner tube 9 can slide axially along the guide tube 24 . In...

Embodiment 2

[0026] The difference between this embodiment and Embodiment 1 is that the equal displacement component is located between the inner tube 9 and the three-section corrugated pipe, and includes a set of left limit stoppers installed on the lower end surface of the short joint on the left side of the corrugated pipe And be installed on the inner pipe 9 and be positioned at one group of right limit stops below bellows. The displacement equalizing assembly of this embodiment has a structure such as figure 2 As shown, it includes a first left limit stop 20, a first right limit stop 21, a second left limit stop 22 and a second right limit stop 23, wherein the first left limit stop The position stopper 20 is fixed on the lower end surface of the second short connection pipe 5, the second left limit stopper 22 is fixed on the lower end surface of the third short connection pipe 6, the first right limit stopper 21 and the second right limit stopper The stop block 23 is fixed on the ou...

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Abstract

The invention relates to a large compensation external pressing type expansion joint with heat preservation reset. The large compensation external pressing type expansion joint with the heat preservation reset comprises an external pipe and an internal pipe which is installed inside the external pipe; a guide cylinder sleeves inside one end of the internal pipe; the guide cylinder is externally connected with an end pipe; a first pressure bearing ring plate is arranged on the end pipe; the first pressure bearing ring plate is fixedly connected with one end of the external pipe; a group of corrugated pipes sleeve the internal pipe; the corrugated pipes and the internal pipe are coaxial; the corrugated pipes are mutually in series connection; a front section corrugated pipe in the corrugated pipes which are in mutual series connection is fixedly connected with the ring plate which is installed on the internal pipe through a short connecting pipe; a tail section corrugated pipe is fixedly connected with a second pressure bearing ring plate which is installed at the other end of the external pipe; an external protective sleeve is externally connected to the other end of the external pipe; a heat preservation reset device is arranged inside the external protective sleeve; a displacement uniform distribution assembly is arranged between the adjacent corrugated pipes. The large compensation external pressing type expansion joint with the heat preservation reset has the advantages of satisfying a large displacement compensation requirement, meanwhile satisfying an expansion joint fatigue life requirement, guaranteeing the product stability, preventing a heat preservation layer from getting vacant due to the fact that the heat preservation materials can reset along with a pipeline and reducing energy consumption.

Description

technical field [0001] The invention relates to a pipeline expansion joint, in particular to a large compensation external pressure bellows expansion joint with heat preservation and reset. Background technique [0002] The bellows expansion joint is a compensation device that uses the expansion and contraction of the bellows to absorb the displacement or size change of the pipeline due to thermal expansion and contraction. It is widely used in petrochemical, metallurgy, electric power and heating network industries as a thermal compensation element. in the pipeline. The external pressure bellows expansion joint is mainly composed of a bellows bearing external pressure, an outer tube and an end ring. The expansion joint also uses the tensile deformation of the bellows to absorb the axial displacement of the pipeline. Absorbed displacement is one of the performance indicators to measure the compensation ability of expansion joints. The larger the absorbed displacement, the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L51/02F16L59/02
CPCF16L51/02F16L59/025
Inventor 胡毅王召娟蔺百锋陈为柱
Owner AEROSUN CORP
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