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Linear sealing pipeline connection structure

A connection structure, wire sealing technology, applied in the direction of adjustable connection, pipe/pipe joint/pipe fitting, passing element, etc., can solve the problems of poor sealing effect, difficult to repair, low oil leakage rate, etc., to achieve good sealing, The effect of light weight and low chance of oil leakage

Inactive Publication Date: 2013-01-23
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Comparison of advantages and disadvantages: the hemispherical surface line sealing structure has good sealing reliability, and the oil leakage rate is more than 70% lower than that of the conical surface sealing structure. After the spherical surface is damaged, the spherical surface has good repairability, but the weight is heavy; The sealing structure is light in weight, but the sealing effect is poor. After the cone surface is damaged, it is difficult to repair

Method used

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  • Linear sealing pipeline connection structure
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Embodiment

[0015] This embodiment provides a wire-sealed pipeline connection structure, which is characterized in that it includes an eccentric spherical surface 1, an inner cone surface 2, a size SRA3, a size RB4, and a size C5.

[0016] In the line sealing structure, the eccentric spherical surface 1 cooperates with the inner cone surface 2 to form a line sealing pipeline connection structure as a whole.

[0017] The basic structure of the eccentric spherical surface 1 is determined by the dimensions SRA3, RB4, and C5. The eccentric distance of the outer cone sphere is controlled by adjusting the dimension RB4; the axial position of the center of the eccentric ball is controlled by adjusting the dimension C5, and the radius of the eccentric ball is controlled by adjusting the dimension SRA3. Optimize and adjust the dimensions SRA3, RB4, and C5 to reduce the overall size of the eccentric spherical line sealing structure, and at the same time determine the best position of the sealing li...

Embodiment 2

[0021] This embodiment provides a wire-sealed pipeline connection structure, which is characterized in that it includes an eccentric spherical surface 1, an inner cone surface 2, a size SRA3, a size RB4, and a size C5.

[0022] In the line sealing structure, the eccentric spherical surface 1 cooperates with the inner cone surface 2 to form a line sealing pipeline connection structure as a whole.

[0023] The basic structure of the eccentric spherical surface 1 is determined by the dimensions SRA3, RB4, and C5. The eccentric distance of the outer cone sphere is controlled by adjusting the dimension RB4; the axial position of the center of the eccentric ball is controlled by adjusting the dimension C5, and the radius of the eccentric ball is controlled by adjusting the dimension SRA3. Optimize and adjust the dimensions SRA3, RB4, and C5 to reduce the overall size of the eccentric spherical line sealing structure, and at the same time determine the best position of the sealing li...

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Abstract

The invention discloses a linear sealing pipeline connection structure, which is characterized by comprising an eccentric spherical surface, an inner conical surface, a size SRA, a size RB and a size C, wherein the eccentric spherical surface is matched with the inner conical surface to form the whole linear sealing pipeline connection structure; and a basic structure of the eccentric spherical surface is determined through the size SRA, the size RB and the size C. The linear sealing pipeline connection structure has the advantages that the weight of an aero-engine pipeline sealing structure is controlled, and a sealing effect of the structure is guaranteed. The structure adopts the eccentric spherical surface structure, so that the weight is relatively light; by the linear sealing structure, the sealing property is relatively high; under a working environment, the probability of oil leakage of a sealing line formed by the eccentric spherical surface and the inner conical surface is low, and relatively high maintainability is realized; when the eccentric spherical surface is matched with the inner conical surface, and an eccentric angle is formed, the structure can be still reliably sealed; and moreover, the sealing structure adopts spherical design, relatively high repairability is realized.

Description

technical field [0001] The invention relates to the field of aero-engines, and in particular provides a line sealing pipeline connection structure. Background technique [0002] The development trend of advanced aero-engines at home and abroad is to continuously increase the thrust-to-weight ratio, and reduce the weight of parts while ensuring the reliability and maintainability of parts. At present, the pipes of aero-engines with a pipe diameter smaller than φ20 mainly adopt a hemispherical surface line seal structure and a surface seal structure with a conical surface. Comparison of advantages and disadvantages: the hemispherical surface line sealing structure has good sealing reliability, and the oil leakage rate is more than 70% lower than that of the conical surface sealing structure. After the spherical surface is damaged, the spherical surface has good repairability, but the weight is heavy; The sealing structure is light in weight, but the sealing effect is poor. Af...

Claims

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Application Information

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IPC IPC(8): F16L27/073
Inventor 邱明星胡伟佳高东武贾铎张让威
Owner BEIHANG UNIV
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