Gas turbine squeezed film damper gap loading measuring device
A squeeze oil film damping, gas turbine technology, applied in gas turbine engine testing, measuring devices, jet engine testing, etc., can solve problems such as ineffective vibration reduction, incorrect clearance of squeeze oil film damper, self-excited vibration of rotor system, etc. , to achieve compact structure, suppress and isolate rotor vibration, and ensure reliability
Inactive Publication Date: 2019-09-20
AECC AVIATION POWER CO LTD
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Problems solved by technology
However, the squeeze film damper clearance is not correct, not only can not effectively reduce the vibration, but will cause continuous self-excited vibration of the rotor system
At present, there is no measuring device for the squeeze film damper gap, so it is necessary to accurately determine the squeeze oil film damper gap to achieve the damping characteristic requirements of the squeeze film damper design and effectively suppress and isolate rotor vibration
Method used
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[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings:
[0020] Such as figure 1 As shown, a gas turbine squeeze film damper gap loading measurement device includes a gap measuring instrument, a hydraulic dynamometer 12, a base 7 for fixing a measurement piece 1 to be measured, and a hydraulic dynamometer fixing frame, and the measurement piece to be measured 1 Fixedly installed on the base 7, the hydraulic dynamometer 12 is fixed on the hydraulic dynamometer fixing frame, the probe 13 of the hydraulic dynamometer 12 can be in vertical contact with the surface of the measuring piece 1 to be measured, and the hydraulic dynamometer 12 can be treated Apply pressure on the surface of the measuring piece 1;
[0021] The height of the hydraulic dynamometer fixing frame is adjustable, which is used to adjust the vertical contact of the hydraulic dynamometer 12 with the surface of the measuring piece 1 to be measured, which is...
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The invention discloses a gas turbine squeezed film damper gap loading measuring device. The device comprises a hydraulic dynamometer, a base for fixing a measuring piece to be measured and a hydraulic dynamometer fixing frame, wherein the measuring piece to be measured is fixedly arranged on the base, a hydraulic dynamometer is arranged on the hydraulic dynamometer fixing frame through a rotating frame, a measuring head of the hydraulic dynamometer can be in contact with the surface of the measuring piece to be measured, the measuring piece to be measured is fixedly arranged on the base, and the rigid connection between the measuring piece to be measured and the base is ensured, the hydraulic dynamometer is regulated to ensure that the right upper part of the measuring piece to be measured is in rigid contact with the measuring head of the hydraulic dynamometer, the hydraulic dynamometer is regulated to ensure that the measuring head applies load to the right upper part of the measuring piece to be measured until the pressure requirement of the load to be measured is met, and therefore, the purpose of measuring the clearance T of the squeezed film damper can be achieved, the device is simple in structure and convenient to use, and the clearance of the squeezed film damper under different loads can be measured, so that the requirement on the damping characteristic of the design of the squeeze film damper can be met.
Description
Technical field [0001] The invention belongs to the technical field of gas turbine testing, and particularly relates to a gas turbine squeeze oil film damper gap loading measurement device. Background technique [0002] The squeeze film damper is an efficient and reliable elastic damping device. It has the advantages of simple structure, reliable work, and can adjust the damping in a wide range to effectively dampen the system in a large speed range. . In the engine, the squeeze oil film damper is to change the interference fit between the outer ring journal of the rolling bearing and the bearing seat into a proper clearance fit, and supply a certain pressure of lubricating oil into the gap, with the help of the rotor The journal movement caused by the unbalanced force squeezes the oil film in this annular gap, thereby generating oil film force. The oil film force can not only hold up the rotor, but also absorb the vibration energy of the rotor system, supporting the rotor, red...
Claims
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Login to View More IPC IPC(8): G01M15/14G01B21/16
CPCG01B21/16G01M15/14
Inventor 陈军蔡婉花樊振祥闫志祥李鹏张文斌韩燕磊
Owner AECC AVIATION POWER CO LTD