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Testing device and testing method for simulating tilting-pad bearing of heavy-duty gas turbine and pad beating fault of tilting-pad bearing

A gas turbine, heavy-duty technology, applied in the direction of gas turbine engine testing, mechanical bearing testing, engine testing, etc., can solve the problems of low stability and reliability, petawatt failure analysis and immature research, etc.

Pending Publication Date: 2021-09-14
HARBIN INST OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The research and development of the present invention solves the problem of immature analysis and research on petawatt faults, resulting in low stability and reliability

Method used

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  • Testing device and testing method for simulating tilting-pad bearing of heavy-duty gas turbine and pad beating fault of tilting-pad bearing
  • Testing device and testing method for simulating tilting-pad bearing of heavy-duty gas turbine and pad beating fault of tilting-pad bearing
  • Testing device and testing method for simulating tilting-pad bearing of heavy-duty gas turbine and pad beating fault of tilting-pad bearing

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Experimental program
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Effect test

specific Embodiment approach 1

[0043] Specific implementation mode one: combine Figure 1-Figure 6 Describe the present embodiment. A simulated heavy-duty gas turbine tilting pad bearing in this embodiment includes screws 1, pins 2, bearing pad bodies 3, pad blocks 4, and bearing end covers 5. Both sides of the bearing pad body 3 are symmetrically arranged The bearing end cover 5, the bearing body 3 and the bearing end cover 5 are connected by screws 1, the bearing body 3 is a hollow structure, and the inside of the bearing body 3 is symmetrically arranged with two pads 4, and the pads 4 are connected to the bearing end cover 5 through the pin 2 Connection; screw 1 (pan head screw) is used to fix and assemble the bearing end cover 5 and bearing body 3 on the left and right sides, pin 2 (cylindrical pin) is used to assemble pad 4 (bearing pad) and bearing end cover 5, cylinder The pin and the hole of the bearing pad are clearance fit to ensure that the pad 4 can swing. The designed bearing structure and oper...

specific Embodiment approach 2

[0044] Specific implementation mode two: combination image 3 , Figure 7 , Figure 8Describe this embodiment, a tilting pad bearing for a simulated heavy-duty gas turbine in this embodiment, the left side of the pad 4 is processed with a first mounting groove 41 and a second mounting groove 42, and the right side of the pad 4 has an eddy current Sensor monitoring area 43, the upper part of the tile 4 has a transition section 44, the transition section 44 is a tiltable pad fulcrum, the outer diameter of the transition section 44 is φ59.9mm, the arc length is LI=1mm, the two sides of the transition section 44 The side has rounded corners, and the size of the rounded corners is R1=3mm; the manufacturing tolerances of the first mounting groove 41 and the second mounting groove 42 are positive. Safety and accuracy of test results require that the thickness of the poured Babbitt alloy layer be not less than 1.8mm.

specific Embodiment approach 3

[0045] Specific implementation mode three: combination Figure 1-Figure 6 Describe this embodiment, a test device for simulating the failure of a heavy-duty gas turbine tilting pad bearing in this embodiment, including a miniature acoustic emission sensor, an acceleration sensor 7, an eddy current sensor 8, two acoustic emission sensors 9 and a bearing housing 10 , the bearing box 10 is installed with a simulated heavy-duty gas turbine tilting pad bearing, the eddy current sensor 8 passes through the bearing box 10 and is screwed to the bearing body 3, and the eddy current sensor 8 passes through the bearing body 3 and is arranged on the electrical connection of the pad 4 The corresponding position of the eddy current sensor monitoring area 43, the eddy current sensor 8 detects the relative displacement between the tile back of the tile 4 and the probe of the eddy current sensor 8 through the eddy current effect, and then obtains the swing angle of the tile 4, and the miniature...

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Abstract

The invention relates to a testing device and a testing method for simulating a tilting-pad bearing of a heavy-duty gas turbine and a tilting-pad fault of the tilting-pad bearing, and belongs to the technical field of gas turbines, and aims to solve the problem that the stability and the reliability are low due to the fact that analysis and research on the pad beating fault are immature. The device comprises screws, pins, a bearing bush body, pads and bearing end covers, wherein the bearing end covers are symmetrically arranged on the two sides of the bearing bush body, the bearing end covers are connected with the bearing bush body through the screws, the two pads are symmetrically arranged in the bearing bush body, and the pads are connected with the bearing end covers through the pins. According to the invention, the pad beating fault is analyzed and researched, and the stability and reliability are improved.

Description

technical field [0001] The invention relates to a tilting pad bearing of a heavy-duty gas turbine and a testing device and a testing method for pad failure thereof, belonging to the technical field of gas turbines. Background technique [0002] Heavy-duty gas turbines are high-efficiency and clean power generation equipment, in which the rotor is the most important core component. There are two rotor blades, and the tie-rod combined rotor provides pre-tightening force through the tie rods, and the torque is transmitted by the wheel disc or the friction surface. At present, the design and manufacture of heavy-duty gas turbine rotor components in my country is in its infancy. There are no mature modeling models and theories in China, and a few developed countries are in a monopoly position for this technology. [0003] Heavy-duty gas turbines usually use sliding bearings, which have high stability, but they are not completely stable in actual engineering. Unstable vibrations ...

Claims

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Application Information

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IPC IPC(8): G01M15/14G01M15/02G01M13/04G01M13/045G01N29/14G01N27/90F16C33/04
CPCG01M15/14G01M15/02G01M13/04G01M13/045G01N29/14G01N27/90F16C33/04
Inventor 冯永志由岫孟凡刚陈予恕赵俊明吕欣然胡盼王辉陈奕嘉陈洪港刘勇袁小阳
Owner HARBIN INST OF TECH
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