Bearing-rotor system loading test device and method

Abstract

The invention discloses a bearing-rotor system loading test device and a bearing-rotor system loading test method. The device comprises a static pressure gas bearing, a floating coupling, a pressure sensor, a cylinder, a loading bracket, a direction control valve, a pressure regulation valve A and a pressure regulation valve B, wherein the cylinder is fixed on the loading bracket; the cylinder and the direction control valve are connected through an air pipe and a quick coupling; the direction control valve is connected with an air inlet pipe through the pressure regulation valve A; and the static pressure gas bearing is connected with the air inlet pipe through the pressure regulation valve B. Through the device and the method, an air film is formed between the static pressure gas bearing and a test rotor so as to realize non-contact loading, the rotor can be loaded in the static state or high-speed rotation state, the loading is safe and the loading force is convenient to regulate. During the loading, the non-contact loading method ensures that the dynamic balance property of the rotor is not influenced during the loading and the loading can be performed in the static state, high-speed state and super-high-speed state.

Description

technical field [0001] The invention relates to a load test device for a rotating machine, in particular to a load test device for a bearing-rotor system and a method thereof. Background technique [0002] The rotor-bearing system is the core component of the rotating machinery. The bearing capacity, stability and rigidity of the system under dynamic and static loads directly affect the safe operation of the system. Accidents happen. The dynamic and static loading test and monitoring of the rotor-bearing system can provide guidance for the safe operation and fault diagnosis of the unit, and avoid the occurrence of malignant accidents. However, the commonly used loading test method at present is to carry out contact loading under the static state of the rotor, such as: spring loading, cylinder loading, etc., and the transient state of the bearing-rotor system, especially the start and stop states, cannot be dynamically tested, which cannot meet the increasing demands. Devel...

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Problems solved by technology

[0003] 1. Static load test, difficult loading, discontinuous loading

[0004]2. The dynamic research under no-load conditions deviates from the actual working conditions, which is not conducive to fully studying the working characteristics of the bearing-rotor system

[0005]3. The traditional wheel loading is easy to damage the dynamic balance of the rotor, and it is easy to cause collision friction

Simultaneous roulette loading, single loading range

[0006]4. Traditional contact loading has many unsafe factors, which is not conducive to personal safety

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