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Eccentric spherical externally-conical sealing structure for engine pipeline

A sealing structure and engine technology, applied in the direction of sealing surface connection, mechanical equipment, pipes/pipe joints/fittings, etc., can solve the problems of poor sealing effect, difficult repair, low oil leakage rate, etc., and achieve good sealing performance and low weight Lightweight and low chance of oil leakage

Inactive Publication Date: 2014-10-08
卢世清
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The hemispherical surface line seal structure has good sealing reliability, and the oil leakage rate is more than 70% lower than that of the cone surface seal structure. After the spherical surface is damaged, the spherical surface has good repairability, but the weight is heavy; the surface seal structure with the conical surface 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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  • Eccentric spherical externally-conical sealing structure for engine pipeline

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Embodiment 1

[0016] This embodiment provides a sealing structure for the eccentric spherical outer cone pipeline of the engine, including the first outer conduit 1, the flat nozzle 2, the external nut 3, the cone joint 4, the second conduit 5; one end of the external cone joint 4 It is connected with one end of the flat nozzle 2; the other end of the outer cone joint 4 is fixedly connected with the second conduit 5; the other end of the flat nozzle 2 is fixedly connected with the first conduit 1; the external nut 3 At one end of the flat nozzle 2 in the outer cone joint 4, the inner thread is tightly matched with the outer thread of the outer cone joint 4 to play the role of fixing and sealing the outer cone joint 4 and the flat nozzle 2. The matching surface of the outer cone joint 4 adopts the outer cone surface of an eccentric ball. The flat nozzle 2 is a 75° inner cone structure; the eccentric ball outer cone surface in the outer cone joint 4 cooperates with the 75° inner cone in the f...

Embodiment 2

[0021] This embodiment provides a sealing structure for an eccentric spherical outer cone pipeline of an engine, which includes an outer cone joint 4, a flat nozzle 2, an external nut 3, a second conduit 5, and a first conduit 1; the external cone joint 4 and the flat The nozzle 2 is connected, the other end of the outer cone joint 4 is welded to the second conduit 5, and the other end of the flat nozzle 2 is welded to the first conduit 1; the external nut 3 is placed in the outer cone joint 4 to flatten the end of the nozzle 2, and the inner thread is connected to the outer The outer thread of the cone joint 4 is tightened and matched, and plays the role of fixing and sealing the outer cone joint 4 and the flat nozzle 2 . The outer tapered surface adopts an eccentric ball structure to reduce the outer diameter of the part and reduce the weight of the part. When there is eccentricity in the assembly process of the outer cone joint 4 and the flat nozzle 2, it can be effectively...

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Abstract

The invention relates to an eccentric spherical externally-conical sealing structure for engine pipeline. The eccentric spherical externally-conical sealing structure comprises a first guide pipe, a flat-pipe nozzle, an additional nut, an external conical connector and a second guide pipe. One end of the external conical connector is connected with one end of the flat-pipe nozzle, and the other end of the external conical connector is fixedly connected with the second guide pipe. The other end of the flat-pipe nozzle is fixedly connected with the first guide pipe. The additional nut is arranged at one end of the flat-pipe nozzle in the external conical connector and fitted with an outer thread of the external conical connector through an inner thread in a screw mode, thus the external conical connector and the flat-pipe nozzle are fixedly sealed. The eccentric spherical externally-conical sealing structure has the advantages that an eccentric spherical structure is adopted to lead to small weight, and a linear sealing structure is adopted to lead to good sealing effect; in a work environment, by a sealing line formed by the eccentric sphere and an inner conical surface, oil leakage probability is low, and maintainability is good; meanwhile a spherical design is adopted in the sealing structure, leading to effective repairability.

Description

technical field [0001] The invention relates to a pipeline sealing structure for an eccentric spherical outer cone of an engine. Background technique [0002] At present, the development trend of advanced engines at home and abroad is to continuously increase the thrust-to-weight ratio, and at the same time require components to be more reliable and maintainable. One of the most direct and effective means to improve the engine’s thrust-to-weight ratio is that the components meet the functions and other requirements. Minimize weight. [0003] The engine pipeline is used for the transmission of fluid and gas. While the weight of the pipeline is controlled, the sealing performance of the pipeline must be ensured. It mainly adopts spherical surface sealing structure and conical surface matching surface sealing structure. The hemispherical surface line seal structure has good sealing reliability, and the oil leakage rate is more than 70% lower than that of the cone surface seal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L19/02
CPCF16L19/0225
Inventor 卢世清
Owner 卢世清
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