Pre-tightening force-nut tightening torque calibration system of gas turbine pull rod rotor

A tie-rod rotor, gas turbine technology

Pending Publication Date: 2021-11-09
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the technical problem to be solved by the present invention is: to overcome the disadvantages of high cost and difficult operation of the calibration of the pre-tightening force of the tie-rod rotor in the prior art, by establishing the pre-tightening force and The relationship between the tightening torque of nuts commonly used in experiments can minimize the cost of measurement and make the calibration of the pre-tightening force and tightening torque of the rod rotor clearer and simpler

Method used

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  • Pre-tightening force-nut tightening torque calibration system of gas turbine pull rod rotor
  • Pre-tightening force-nut tightening torque calibration system of gas turbine pull rod rotor

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Embodiment Construction

[0028] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the embodiments of the present invention. The described embodiments are some, but not all, of the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention and should not be construed as limiting the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] like figure 1 As shown, the pre-tightening force-nut tightening torque calibration system of the present invention is suitable for the gas turbine tie rod rotor. The ac...

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Abstract

In order to overcome the defects that in the prior art, pull rod pretightening force calibration of a pull rod rotor is high in cost and difficult to operate, the invention discloses a calibration system suitable for pull rod pretightening force-tightening torque of a gas turbine pull rod rotor and an implementation method of the calibration system, and the calibration system comprises a rigid support, a pull rod, a nut, a nut gasket, an equivalent connected piece of the gas turbine pull rod rotor and a dial indicator, the invention provides a calibration device for the pre-tightening force and the nut tightening torque of the pull rod rotor, especially the circumferential pull rod rotor. The system is simple, low in cost and high in calibration precision. The system has a certain application value, and particularly, the pre-tightening force is used as an application unit in the pull rod calculation of the existing commercial software, and the tightening torque is used as an application unit in the test process. The invention provides a calibration bridge of the two, and the calibration bridge has high engineering value.

Description

technical field [0001] The invention belongs to the technical field of gas turbine tie-rod rotor dynamics modeling, relates to a pre-tightening force-nut tightening torque calibration system, and in particular relates to a pre-tightening force-nut tightening torque calibration system suitable for a gas turbine tie-rod rotor. Background technique [0002] Tie-rod rotors have been widely used in aero-engines and heavy-duty gas turbines due to their advantages of good strength, high rigidity, and flexible selection of roulette materials. Different from the integral rotor, the tie-rod rotor is not a continuous whole in structure, and the results obtained by the integral rotor modeling method are quite different from the actual test results of the tie-rod rotor. [0003] For the study of the tie rod rotor, the finite element method is usually used to carry out the numerical model. However, in the finite element method, the pre-tightening force of the tie rod is applied by the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L5/24
CPCG01L5/243
Inventor 李佳琦莫古云蒋文婷孙涛郭宝亭冯引利
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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