Static balance device of vanes on rotating machinery

A technology of static balance and rotating machinery, applied in the field of mechanical engineering, it can solve the problem of inability to measure the length, and achieve the effect of overcoming the low absolute accuracy, improving the measurement accuracy and reliable performance.

Inactive Publication Date: 2010-07-28
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The objects measured by both are steam turbine blades with small mass and volume, but cannot measure large blades with a length of up to 10 to 20 meters and a weight of several hundred kilograms

Method used

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  • Static balance device of vanes on rotating machinery
  • Static balance device of vanes on rotating machinery
  • Static balance device of vanes on rotating machinery

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Embodiment Construction

[0010] The embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention. The detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following examples.

[0011] Such as figure 1 As shown, this embodiment includes: a base 1, a support column 2, a fixed support plate 3, a thrust bearing 4, a rotating mandrel 5, a blade to be tested 6, a clamp body 7 and a strain gauge 8, wherein: the base 1 is welded and supported The column 2, the fixed support plate 3 are fixed on the upper end of the support column 2, the thrust bearing 4 is concentrically arranged in the fixed support plate 3, the rotating mandrel 5 is respectively connected with the clamp body 7 and the thrust bearing 4, and the clamp body 7 is clamped by Measuring blade 6, clip body 7 can ...

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Abstract

A static balance device of vanes on rotating machinery belongs to the technical field of mechanical engineering and comprises a base, a support column, a fixed support plate, a thrust bearing, a mandrel, a clip and strain gauges, wherein the support column is fixedly arranged on the base; the fixed support plate is fixedly arranged at the upper end of the support column; the strain gauges are arranged at the side at the lower end of the support column; the thrust bearing is arranged in the fixed support plate; and the mandrel is connected with the clip and the thrust bearing respectively. Relative to measurement, the device can accurately measure the static moment difference between the two large-mass vanes to be measured of the large rotating machinery and the center and can carry out balancing while measuring, thus overcoming the defect the traditional moment instruments of the vanes to be measured have lower absolute accuracy when measuring large-mass objects, can only measure the absolute but can not carry out balancing while measuring. The device has reliable performance and greatly improves the measuring accuracy.

Description

technical field [0001] The invention relates to a device in the technical field of mechanical engineering, in particular to a static balancing device for rotating mechanical blades with a size range of more than 3m. Background technique [0002] Blades on rotating machinery often work at high speeds, and their balance quality directly affects the normal operation of the equipment. The torque of the blades to the rotor is not the same, causing the rotating machinery to be unbalanced, resulting in a large jump in the radial direction, which accelerates the wear of the journal and bearings, seriously reduces the life of the equipment, and increases the cost of the enterprise. The blades are balanced. The quality of the balance depends on the accuracy of the measurement of the static moments of the blades. The reason why the rotor cannot achieve dynamic balance is that the blade moments are not the same, so the measurement of the blade moment only needs to obtain the moment di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M1/12
Inventor 李振康征张雪萍樊启泰
Owner SHANGHAI JIAO TONG UNIV
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