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Balance-type static balance device and turbine runner static balance process achieved by same

A static balance, balance type technology, applied in the field of mechatronics detection, can solve the problems of restricting the static balance process accuracy, low sensitivity, difficult to ensure the rotation axis of the runner, etc., and achieves low cost, small contact area, and strong load-bearing capacity. Effect

Active Publication Date: 2015-04-08
黄河机械有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this balancing process is that the three pressure sensors must bear the full weight of the runner. When the tonnage of the runner is large, a large-range sensor must be used.
However, the sensitivity of the large-range sensor is low, which restricts the improvement of the precision of the static balance process
In addition, during the lifting process of the runner, it is difficult to ensure that the rotation axis of the runner can accurately fall on the center of the distribution circle of the three pressure sensors.

Method used

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  • Balance-type static balance device and turbine runner static balance process achieved by same
  • Balance-type static balance device and turbine runner static balance process achieved by same
  • Balance-type static balance device and turbine runner static balance process achieved by same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Depend on figure 1 , figure 2 and image 3 The balance-type static balancing device shown includes a centering ring 19 , a transition plate 4 , a balance knife-edge plate 10 , a base 7 and a base 11 arranged sequentially from top to bottom.

[0021] The centering ring 19, the transition disc 4 and the balance knife-edge disc 10 are arranged concentrically and horizontally, that is, the vertical centerlines of the three coincide. The centering ring 19 is annular, and the transition plate 4 and the balance knife edge plate 10 are both disc-shaped.

[0022] The upper and lower surfaces of the transition plate 4 are respectively provided with upwardly retracted and downwardly retracted circular platforms, the centerline of the circular platform coincides with the centerline of the transitional plate 4, and the circular platform and the transitional plate 4 are concentrically arranged. Since the centering ring 19 is arranged on the upper side of the transition disc 4, th...

Embodiment 2

[0028]The static balancing process of the hydraulic turbine runner 1 includes the following steps: (1) firstly install the balance-type static balancing device as described in Embodiment 1, and place the annular seat of the hydraulic turbine runner 1 on the two annular protrusions 15 of the centering ring 19 between, and by adjusting the adjusting screw 3, the turbine runner 1 is set concentrically with the centering ring 19, the transition plate 4, and the balance knife-edge disk 10. After the turbine runner 1 and the balance-type static balancing device are installed and positioned, the first record The readings of the two pressure sensors 13, the specific operation process is as follows: 1. Clean up the site, place the base 7 on the base 11 and level it, and place four hydraulic jacks 6 evenly on the same circumference with the base 7 as the center. 2. Fit the balance knife-edge disc 10 equipped with the pressure sensor 13 concentrically with the transition disc 4, and posit...

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Abstract

The invention discloses a balance-type static balance device and a turbine runner static balance process achieved by the same. The balance-type static balance device comprises a transition disc, a balance knife edge disc and a base which are sequentially arranged from top to bottom, the transition disc and the balance knife edge disc are concentrically arranged and hinged through a vertical rotation shaft, a bead is arranged on a lower surface of the balance knife edge disc, an edge line is arranged at the bottom end of the bead which is contacted with the base through the edge line, and a pressure sensor is respectively arranged on two sides of the bead. The turbine runner static balance process uses the balance-type static balance device, a turbine runner is placed on a centering ring, the turbine runner rotates to different measuring positions by rotating the balance knife edge disc to obtain different numbers read by the pressure sensor to calculate unbalance amount and positions of the turbine runner. The balance-type static balance device and the turbine runner static balance process solves problems of the prior art and are high in sensitivity, simple in structure, convenient to operate, low in cost and wide in application scope.

Description

technical field [0001] The invention belongs to the technical field of mechatronics detection, and in particular relates to a balance type static balancing device and a water turbine runner static balancing process. Background technique [0002] The runner of a water turbine is a large rotating part. Due to its complex internal structure, it is difficult to ensure that its center of mass is exactly on its rotation axis after processing, assembly and overhaul. The purpose of the static balancing process is to find out the size and position of its unbalance, and reduce or eliminate the unbalance by adding or removing mass blocks, so as to realize the safe and stable operation of the turbine. [0003] Application No. 200810045399.X's Chinese patent "Spherical Static Pressure Device for Transmission Parts Base of Hydroelectric Unit" and Application No. 201110262941.9 Chinese Patent "Hydraulic Turbine Runner Three-Point Weighing Type Static Balancing Device and Static Balancing P...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M1/12
Inventor 郝用兴侯艳君张太萍刘亚辉胡冬松
Owner 黄河机械有限责任公司