An ultra-high-speed turbo pump and overflow valve matching test device

Abstract

The invention discloses a matching test device for an ultra-high-speed turbine pump and an overflow valve. The matching test device comprises a turbine driving device, a hydraulic system, a computer acquisition and control system and a real-time spectrum analyzer, wherein the turbine driving device is used for driving the turbine pump to work, the hydraulic system is used for providing an equivalent simulation load for the ultra-high-speed turbine pump, and the computer acquisition and control system is used for adjusting the flow of the equivalent simulation load according to performance requirements, collecting the rotating speed and the vibration amount of the small-shaft end of a rotor in the working process of the ultra-high-speed turbine pump and the opening pressure and the self-vibration frequency of the overflow valve, and sending the processed parameters to the real-time spectrum analyzer; and the real-time spectrum analyzer is used for carrying out spectrum analysis to obtain the dynamic characteristics of the overflow valve and the matching relation between the dynamic characteristics of the overflow valve and the vibration amount of the rotor. According to the matchingtest device, the dynamic characteristics of the overflow valve and the matching coupling relation between the dynamic characteristics of the overflow valve and the vibration amount of the ultra-high-speed turbine pump can be verified.

Description

technical field [0001] The invention relates to a matching test device for an ultra-high-speed turbo pump and an overflow valve, which is used for verifying the matching and coupling relationship between the dynamic performance of the overflow valve and the turbo pump under high temperature conditions, and belongs to the field of hydraulic systems. Background technique [0002] The overflow valve is an important pressure control and adjustment element in the servo hydraulic system. As an important control and adjustment element of the servo energy, its dynamic characteristics, stability and working noise will affect the normal operation of the entire servo system. For working under high temperature conditions, the overflow valve is between the valve core and the matching surface of the valve body. Due to the inconsistent thermal expansion, it is easy to cause the valve core to be stuck, the movement is inflexible, or the leakage is increased, resulting in the adjustment of th...

AI Technical Summary

Problems solved by technology

The pressure stability of the relief valve with large pressure fluctuation is poor, and in severe cases, it will produce intense vibration and howling sound, making the system unable to work normally

At the same time, the vibration of the pilot valve or the main valve will in turn affect the oil supply pulsation of the hydraulic pump, causing certain vibrations in the shafting of the turbo pump.

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