Mechanical type end surface sealing specific pressure measuring device for high-speed liquid oxygen turbine pump

Abstract

The invention relates to a mechanical type end surface sealing specific pressure measuring device for a high-speed liquid oxygen turbine pump. The mechanical type end sealing specific pressure measuring device is used for accurately measuring end surface sealing specific pressure data. The device comprises a sealed static ring assembly, a movable ring, a first shaft sleeve, a housing, a shaft, a pressurizing mouthpiece, a sealing gasket, a second shaft sleeve and a pressure sensor. According to the mechanical type end surface sealing specific pressure measuring device of the invention, the problem that specific pressure data cannot be accurately measured in original sealing design can be solved, a piston shaft can be stressed in a balanced manner, and measurement accuracy is improved. The mechanical type end surface sealing specific pressure measuring device is suitable for the mechanical sealing of the high-speed oxygen turbine pump and can meet the requirements of a variety of liquid and gas media; the mechanical type end surface sealing specific pressure measuring device is easy to operate and simple in processing, and can adapt to engine operating conditions; and the mechanical type end surface sealing specific pressure measuring device can meet sealing end surface specific pressure tests for product tests and has a wider application range.

Description

technical field [0001] The invention relates to the application field of mechanical seals for liquid rocket engine turbopumps, and is a mechanical end-face seal specific pressure measuring device for high-speed liquid oxygen turbopumps, which is mainly used for rocket engine end-face seal specific pressures of liquid hydrogen and liquid oxygen propellants Measurement test. Background technique [0002] Since the beginning of the 21st century, the major aerospace countries in the world have launched their own new-generation launch vehicles. The hydrogen-oxygen expansion cycle rocket engine is famous abroad because of its simple system, high reliability, high performance, strong adaptability, and multiple start-ups. The upper stage of a new generation of launch vehicles has been widely used. [0003] The hydrogen-oxygen turbopump is one of the core components of the hydrogen-oxygen expansion cycle rocket engine. Its commonly used sealing forms include end face seals and labyr...

AI Technical Summary

Problems solved by technology

[0006] The technical problem solved by the invention is: Aiming at the problem that the traditional helium end face seal cannot actually measure the value of the seal specific pressure under the real pressure state, which leads to the inability to effectively control the pressure increase of the seal chamber, a high-speed liquid oxygen turbo pump is proposed. The unique mechanical end seal specific pressure measuring device can accurately measure the specific pressure value of the rocket engine end seal of liquid hydrogen and liquid oxygen propellants

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