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Impact type three-dimensional turning wheel model designing method

A runner model, three-dimensional design technology, applied in the direction of calculation, 3D modeling, image data processing, etc., can solve the problems of heavy workload, complex three-dimensional geometric design of impact runner bucket, low efficiency, etc. The effect of improved efficiency, clear design ideas, and reduced design workload

Inactive Publication Date: 2017-05-17
CHONGQING WATER TURBINE WORKS
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Problems solved by technology

[0002] For the three-dimensional geometric design of the turbine runner blades of the same type, the mixed-flow, tubular-flow and axial-flow real runner blades can be obtained by scaling the model runner with a certain proportional coefficient k, but this method is not suitable for the impact type. The runner water bucket is not good, because the design of the impact runner bucket is also affected by the diameter of the runner D 1 , bucket number Z 1 , base circle d 0 and bucket nominal width B 2 The constraints of the four parameters, and the requirement that the root of the working surface of the water bucket must be seamlessly connected with the root of the back of the adjacent water bucket, resulting in complex three-dimensional geometric design of the impact runner water bucket, heavy workload and low efficiency

Method used

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  • Impact type three-dimensional turning wheel model designing method
  • Impact type three-dimensional turning wheel model designing method
  • Impact type three-dimensional turning wheel model designing method

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0027] like Figure 1 to Figure 6 As shown, 1) establish a database, and brush to select the reference wheel

[0028] Write the existing impact runner of this type into the database, according to the nominal inner width of the water bucket B 2 , runner diameter D 1 , bucket number Z 1 , arrange each runner, and by the diameter of the runner D 1 , bucket number Z 1 Calculate the arc length l of a single water bucket for each runner by the following formula 1 .

[0029]

[0030] In the formula: l 1 is the arc length of a single bucket;

[0031] D. 1 is the wheel diameter;

[0032] Z 1 is the number of buckets.

[0033] When designing a new runner, enter the nominal inner width B of the bucket of the runner in the database 2 , runner diameter D 1 , bucket number Z 1 , and then the nominal inner width B of all runner water buckets...

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Abstract

The invention discloses an impact type three-dimensional turning wheel model designing method. Different sizes of existing rotating wheels are utilized to establish a database, screening is performed from the database by adopting a certain technical means, an ideal rotating wheel is selected out to perform scaling according to a certain proportion, then the root portion of a bucket is appropriately processed, and finally the needed rotating wheel is obtained. The method is clear in design thought and simple and clear in design principle, makes the design work amount greatly deceased and makes the working efficiency improved for several times.

Description

technical field [0001] The invention relates to a design method of an impact runner. Background technique [0002] For the three-dimensional geometric design of the turbine runner blades of the same type, the mixed-flow, tubular-flow and axial-flow real runner blades can be obtained by scaling the model runner with a certain proportional coefficient k, but this method is not suitable for the impact type. The runner water bucket is not good, because the design of the impact runner bucket is also affected by the diameter of the runner D 1 , bucket number Z 1 , base circle d 0 and bucket nominal width B 2 The constraints of the four parameters, and the requirement that the root of the working surface of the bucket must be seamlessly connected with the root of the back of the adjacent bucket, lead to complex three-dimensional geometric design of the impact runner bucket, heavy workload, and low efficiency. Contents of the invention [0003] The purpose of the present inven...

Claims

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Application Information

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IPC IPC(8): G06F17/50G06T17/00
CPCG06F30/17G06T17/00
Inventor 陈柱秦波
Owner CHONGQING WATER TURBINE WORKS
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