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Vacuum tube joint threaded connection component

A threaded connection and component connection technology, which is applied in the direction of pipes/pipe joints/fittings, sealing surface connection, passing components, etc., can solve the problems of low flight safety factor and high maintenance cost of aerospace vehicles, and achieve fast and simple production and convenient maintenance Effect

Inactive Publication Date: 2013-09-04
GUIZHOU AEROSPACE PRECISION PRODS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ordinary pipe joints simply cannot meet these harsh conditions
If the parts cannot meet the requirements of use, the flight safety factor of aerospace vehicles will be low and the maintenance cost will be high

Method used

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  • Vacuum tube joint threaded connection component
  • Vacuum tube joint threaded connection component
  • Vacuum tube joint threaded connection component

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Embodiment Construction

[0021] The present invention will be further described in detail below with reference to the drawings and embodiments. But it is not used as a basis for any limitation of the present invention.

[0022] Such as figure 1 As shown, the present invention provides a vacuum pipe joint threaded connection assembly, which includes: a main vacuum pipe joint 1, a secondary vacuum pipe joint 2, a lock nut 3 and a concentric sealing ring 4.

[0023] Such as figure 2 As shown, the main vacuum pipe joint 1 includes an outer pipe surface 5, a locking external thread 6, a welding end 7, a welding cavity 8, a main through cavity 9, a sealing cavity 10 and a positioning cavity 11. The external locking thread 6 engages with the internal locking thread 20 of the locking nut 3; the welding end 7 and the welding cavity 8 are welded to the vacuum tube 26 to be connected as a whole; the concentric sealing ring 4 is located in the sealing cavity 10; the positioning cavity 11 is used for the main Positio...

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PUM

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Abstract

The invention relates to a vacuum tube joint threaded connection component. The connection component comprises a primary vacuum tube joint, a secondary vacuum tube joint, a fastening nut and a concentric sealing ring. The vacuum tube joint threaded connection component is assembled by welding the primary vacuum tube joint and the secondary vacuum tube joint sleeved with the fastening nut to a to-be-connected vacuum tube respectively through a welding way such as butt welding, socket welding, roll welding, seam welding, and angle welding, then placing the concentric sealing ring, and screwing the fastening nut tightly on the primary vacuum tube joint. As the technical scheme mentioned above is adopted, the high difficulty in the prior art is overcome, the demand of the science and technology progression is satisfied, and better vacuum tube joints are created for an aero-engine. The vacuum tube joint threaded connection component not only fast and simple in production, but is also convenient in maintenance.

Description

technical field [0001] The invention belongs to the field of machining, in particular to a vacuum pipe joint threaded connection assembly. [0002] Background technique [0003] In the design of aerospace engine parts, high temperature and high pressure have always been the most difficult key parameters to overcome. The engine is a device that provides power, and the temperature is as high as more than 3,000 degrees Celsius. It involves many high-temperature liquids and gas pipelines, and requires vacuum sealing. And under such harsh conditions, high safety and high reliability are required. On the high-speed aircraft of aerospace vehicles, the safety and reliability are 100%, and a slight difference will cause catastrophic consequences. For example, the Columbia space shuttle in the United States was a catastrophic accident caused by a leak in a hydraulic pipeline. Ordinary pipe joints simply cannot meet these harsh conditions. If the parts cannot meet the requirements ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L19/02
Inventor 王鹏雷世斌
Owner GUIZHOU AEROSPACE PRECISION PRODS
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