Circumferential sectioned helium sealing device for oxygen turbine pump of hydrogen oxygen engine

A sealing device and engine technology, applied in the direction of machines/engines, liquid fuel engines, pumping devices for elastic fluids, etc., to achieve the effects of improving dynamic pressure capacity, reducing possibility, and small leakage

Inactive Publication Date: 2016-09-28
BEIJING AEROSPACE PROPULSION INST
View PDF10 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above face seals, labyrinth seals and hydrodynamic floating ring seals are no longer satisfactory

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Circumferential sectioned helium sealing device for oxygen turbine pump of hydrogen oxygen engine
  • Circumferential sectioned helium sealing device for oxygen turbine pump of hydrogen oxygen engine
  • Circumferential sectioned helium sealing device for oxygen turbine pump of hydrogen oxygen engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] The circumferential segmented helium sealing device of a hydrogen-oxygen rocket engine oxygen turbo pump according to the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0029] A circumferentially segmented helium sealing device for an oxygen turbopump of a hydrogen-oxygen engine according to the present invention comprises two sets of circumferentially segmented helium seal rings 1 and 2, a sealing case 3, a cover plate 4, a hoop spring 6, Preload spring 7, pin 8, sealing washer 9, bolt 10, washer 11 and sealing bushing 5, etc. The two sides of the circumferential segmented helium seal device are oxygen chamber and hydrogen-rich gas chamber. During operation, a certain pressure of helium is supplied from the helium supply channel to ensure that the pressure of the helium seal chamber is higher than the pressure of the oxygen chamber and hydrogen-rich gas chamber on both sides. , which...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a circumferential sectioned helium sealing device for an oxygen turbine pump of a hydrogen oxygen engine. According to the circumferential sectioned helium sealing device, a circumferential sectioned sealing ring I and a circumferential sectioned sealing ring II are placed in a cavity formed by a cover plate and a sealing shell; sealing shaft sleeves are placed in rings of the circumferential sectioned sealing ring I and the circumferential sectioned sealing ring II; the circumferential sectioned sealing ring I and the circumferential sectioned sealing ring II are oppositely placed and pre-tensioned by virtue of pre-tensioning springs; and each of the circumferential sectioned sealing ring I and the circumferential sectioned sealing ring II is formed by connecting a plurality of fan-shaped arc sections with the same structure end to end, and constrained on an excircle surface through garter springs. According to the circumferential sectioned helium sealing device, each sealing ring is composed of the plurality of fan-shaped arc sections, a hydrodynamic groove structure is introduced, and a hydrodynamic effect of a sealing clearance fluid is adequately utilized, thus the helium sealing device reliably works under an extremely small clearance, and a low leakage amount is maintained.

Description

technical field [0001] The invention relates to a sealing device, in particular to a circumferential segmented helium sealing device for an oxygen turbopump of a hydrogen-oxygen engine. Background technique [0002] Since the new century, the world has ushered in a wave of aerospace technology development. All major aerospace countries in the world have proposed a series of major projects to revitalize aerospace, such as landing on Mars, exploring the moon, etc., and high-thrust rockets are an indispensable means of transportation to complete these plans. The hydrogen-oxygen rocket engine has the advantages of high specific impulse, high reliability, good adaptability, and no pollution, and is widely used in the new generation of launch vehicles at home and abroad. The oxygen turbo pump is one of the core components of the hydrogen-oxygen rocket engine. It uses a hydrogen-rich gas turbine to drive the high-pressure oxygen pump. In order to ensure the safe and reliable opera...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/10F04D29/12
CPCF04D29/102F04D29/122
Inventor 叶小强夏德新金志磊陶瑞峰沈文金孙晓伟张玺张召磊黄克松
Owner BEIJING AEROSPACE PROPULSION INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap