Flexible rotor of ultrahigh-rotating-speed liquid hydrogen turbine pump

A flexible rotor and turbo pump technology, applied in pumps, pump components, non-variable pumps, etc., can solve the problem that the head, flow rate and efficiency of the hydrogen turbo pump cannot meet the thrust of the new generation of engines. and specific impulse improvement needs and other issues

Active Publication Date: 2020-10-27
BEIJING AEROSPACE PROPULSION INST
View PDF7 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the maximum speed of the domestic expansion cycle engine hydrogen turbopump is 60000rpm, and due to the critical speed margin, axial force adaptability and other reasons, it cannot work in a

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
  • Flexible rotor of ultrahigh-rotating-speed liquid hydrogen turbine pump
  • Flexible rotor of ultrahigh-rotating-speed liquid hydrogen turbine pump
  • Flexible rotor of ultrahigh-rotating-speed liquid hydrogen turbine pump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] like Figure 1 to Figure 5 As shown, a flexible rotor device of an ultra-high-speed liquid hydrogen turbo pump is structurally composed of a screw 1, an inducer 2, a compression nut 3, a shaft 4, a first-stage centrifugal wheel 5, a metal rubber damper 6, and a squirrel-cage elastic Support 7, bearing pair 8, interstage bushing 9, secondary centrifugal wheel 10, balance piston 11, metal rubber damper baffle 12, first bushing 13, turbine disc 14, large nut 15, preload disc spring 16 , the second shaft sleeve 17, as attached figure 1 shown. Wherein the screw rod 1, the inducer 2, the compression nut 3, the first-stage centrifugal wheel 5, the second-stage centrifugal wheel 10, and the turbine disc 14 are all made of titanium alloy.

[0031] One end of the shaft 4 is provided with a screw mounting hole, and a screw tightening thread 41 is arranged in the screw mounting hole, and an inducer spline 42, a compression nut tightening thread 43, and a first-stage centrifugal w...

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 relates to a flexible rotor of an ultrahigh-rotating-speed liquid hydrogen turbine pump. The flexible rotor comprises a screw (1), an inducer (2), a compression nut (3), a shaft (4), a primary centrifugal wheel (5), a metal rubber damper (6), a squirrel-cage elastic support (7), a bearing pair (8), an interstage shaft sleeve (9), a secondary centrifugal wheel (10), a balance piston (11), a metal rubber damper baffle (12), a first shaft sleeve (13), a turbine disc (14), a large nut (15), a preloaded disc spring (16) and a second shaft sleeve (17). The shaft system of the flexiblerotor extends outwards in two directions, connection and torque transmission structures are optimized, the mass of the rotor is reduced, cantilevers on the two sides and the supporting span are shortened, supercritical work is achieved, the rated rotating speed reaches 80000 rpm, the critical rotating speed margin is 20% or above, and meanwhile the flexible rotor has 60%-100% variable working condition and axial force self-adaptive balance capacity.

Description

technical field [0001] The invention relates to a flexible rotor of a turbo pump. Background technique [0002] The turbo pump is the heart of the engine. The increase in engine thrust, chamber pressure, and specific impulse means that the head, efficiency, and weight power density of the turbo pump have been greatly improved. Due to the low density of liquid hydrogen and the large volume flow rate, a higher speed is required to achieve the same lift. Therefore, the flexible rotor design of the hydrogen turbopump with ultra-high speed and deep variable working conditions has become one of the key technologies for the new generation of heavy-duty launch vehicle expansion cycle engines. [0003] At present, the hydrogen turbopump speeds of VINCI (Europe), RL60 (Japan) and RD-0146 (Russia) foreign advanced horizontal expansion cycle engines all reach 75,000rpm and above. However, the maximum speed of the domestic expansion cycle engine hydrogen turbopump is 60000rpm, and due ...

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
IPC IPC(8): F04D29/22F04D29/20F04D1/06F04D29/04F04D29/046F04D29/041F04D29/62F04D29/66F04D29/02
CPCF04D1/06F04D29/026F04D29/04F04D29/041F04D29/046F04D29/20F04D29/225F04D29/2266F04D29/628F04D29/669
Inventor 李铭胡晓睿涂霆王怡萱曹耀赵海龙李龙姜绪强褚宝鑫
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