Outer circle measuring structure for impulse turbine model runner

A hydraulic turbine model and impact technology, which is applied in the direction of mechanical diameter measurement, etc., can solve the problem that it is difficult to measure the outer diameter of the runner of the impact turbine model, and achieve the effect of simple structure and convenient implementation.

Inactive Publication Date: 2018-04-10
HARBIN ELECTRIC MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, in order to ensure the hydraulic performance, the part of the traditional water bucket close to the outer circle has a complex curved shape, whether it is the working face or the back, and it is difficult to accurately measure the outer circle diameter of the impact turbine model runner.

Method used

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  • Outer circle measuring structure for impulse turbine model runner
  • Outer circle measuring structure for impulse turbine model runner
  • Outer circle measuring structure for impulse turbine model runner

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Embodiment Construction

[0016] The measurement structure of the outer circle of a model runner of an impact type water turbine disclosed by the present invention is as follows: figure 1 and figure 2 As shown, at the position of the maximum outer circle diameter of each water bucket, two arc segments are extended from the back of the water bucket with the theoretical rotation center 14 of the impact runner as the rotation center, which is distributed symmetrically with respect to the water dividing edge 7: the first Arc segment 20 and the second arc segment 21, such as image 3 and Figure 4 As shown, the first arc segment 20 is located on the back surface 4 of the water bucket at the junction of the upper plane 1 of the water bucket and the outer facade 2 of the water cutting blade gap, and the second arc segment 21 is located outside the upper plane 1 of the water bucket and the water cutting blade gap On the back side 4 of the water bucket at the junction of the facade 22. Projections of the fi...

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Abstract

The invention relates to an outer circle measuring structure for an impulse turbine model runner. Two circular arc sections with a sufficient area are symmetrically distributed relative to a water distribution blade at the maximum outer circle diameter of each bucket and extend from the back of the bucket with the theoretical center of rotation of an impulse turbine model runner as the center of rotation. The measurement of the diameter of a cylindrical surface is much less difficult than the measurement of the distance between two points in the space and sufficient measurement accuracy can beensured. The disclosed outer circle measuring structure for the impulse turbine model runner in the invention can be used to improve the measurement accuracy of the diameter of the outer circle of the impulse turbine model runner.

Description

Technical field: [0001] The invention relates to a structure for measuring the outer circle of a model runner of an impact water turbine. Background technique: [0002] For the hydraulic machinery model, the outer contour size of the runner is not only the maximum radial dimension of the rotating part, but more importantly, the size directly determines the installation and matching dimensions between the related components and the runner. Accurate measurement of the radial maximum outer diameter of hydraulic machinery model runners has become one of the most routine inspection items in the process of manufacturing and installing hydraulic machinery model runners. For the Francis turbine model runner, since the lower ring of the part with the largest radial diameter is a revolving body, its maximum radial dimension can be measured very conveniently. However, for model runners such as axial flow and tubular turbines without the lower ring of the rotator, although the blades o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B5/08
CPCG01B5/08
Inventor 赵越刘永新刘智良史千郭全宝徐用良高阳苏艳意李德友明亮聂文昭徐俊红陈杰城杜江颖
Owner HARBIN ELECTRIC MASCH CO LTD
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