High-back-pressure large-flow ultra-high-speed turbine pump

Abstract

The invention belongs to the technical field of engine fuel pumps, and particularly relates to a high-back-pressure large-flow ultra-high-speed turbine pump. The turbine pump is characterized in thata shell is fixedly connected with a turbine gas inlet cover, a hollow cavity formed by the shell and the turbine gas inlet cover is a turbine cavity, a turbine rotor is installed in the turbine cavity, a shaft of the turbine rotor is integrally assembled with the shell through angular contact bearing supports located at two ends of the inner part of the shell, and the turbine rotor can freely rotate in the turbine cavity at a high speed; and the other end of the shaft of the turbine rotor is connected with a pump impeller, the pump impeller is wrapped by a multi-oil-outlet pump head, and the multi-oil-outlet pump head is fixedly arranged on the shell. According to the turbine pump, the common limits of small-flow pump oil output and low-back-pressure gas exhaust of the ultra-high-speed turbine pump are broken through, and the fuel supply requirement of a scramjet engine can be met.

Description

technical field [0001] The invention belongs to the technical field of engine fuel pumps, in particular to an ultra-high-speed turbo pump with high back pressure and large flow. Background technique [0002] With the development of hypersonic propulsion technology, scramjet technology is becoming more and more mature. The ideal fuel pump for a scramjet is a turbopump, and although the large-scale low-speed turbopump used as a rocket engine fuel pump is relatively mature in technology, such as the turbopump for a large-thrust liquid rocket engine developed by Pratt & Whitney of the United States, and my country's The turbopump for liquid rocket engine fuel delivery developed by the 11th Academy of Aerospace Science and Technology, etc., but due to the small size of the scramjet engine, it is difficult to realize the layout and application of the turbopump for rocket engine. Therefore, it is the best choice to choose a small-sized ultra-high-speed turbo pump as the fuel pump o...

AI Technical Summary

Problems solved by technology

The ideal fuel pump for a scramjet is a turbopump, and although the large-scale low-speed turbopump used as a rocket engine fuel pump is relatively mature in technology, such as the turbopump for a large-thrust liquid rocket engine developed by Pratt & Whitney of the United States, and my country's The turbopump for liquid rocket engine fuel delivery developed by the 11th Academy of Aerospace Science and Technology, etc., but due to the small size of the scramjet engine, it is difficult to realize the layout and application of the turbopump for the rocket engine

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