Large compensation external pressing type 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 larger compensation of expansion joints, to prevent vacancies and meet fatigue life. , the effect of reducing the number of

Active Publication Date: 2015-01-21
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 mult

Method used

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  • Large compensation external pressing type expansion joint with heat preservation reset
  • Large compensation external pressing type expansion joint with heat preservation reset
  • Large compensation external pressing type expansion joint with heat preservation reset

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0020] Example one

[0021] In this embodiment, the large compensation external pressure expansion joint with heat preservation reset has the structure as 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 sleeved with a diversion tube 24, the diversion tube 24 circumscribes the end tube 8, and the right end of the end tube 8 is provided with a first pressure bearing The upper end of the ring plate 10 and the first pressure-bearing ring plate 10 is fixed to the left end of the outer tube 15, and the lower end is fixed to 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 tube 9, and a guide tube 24 is provided in the first axial displacement gap, so that the inner tube 9 passes through the guide tube 24 and the end tube 8 They are inserted into each other so that the inner tube 9 can slide axially along the guide ...

Example Embodiment

[0025] Example two

[0026] The difference between this embodiment and the first embodiment is that the displacement equalization assembly is located between the inner tube 9 and the three-section bellows, and includes a set of left limit stops installed on the lower end of the left side short pipe of the bellows And a set of right limit stops installed on the inner tube 9 and located below the bellows. The displacement of this embodiment is equipped with components, and its structure is 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, where the first left limit stop The position stopper 20 is fixed to the lower end surface of the second shorting tube 5, the second left limiting stopper 22 is fixed to the lower end surface of the third shorting tube 6, the first right limiting stop 21 and the second right limiting stop The position stopper 23 is fixed on the outer wall of th...

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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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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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