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Impact type waterturbine wheel

A water turbine and impact technology, which is applied in the direction of impact engines, hydroelectric power generation, mechanical equipment, etc., can solve the problems of bucket fatigue and other problems, and achieve the effect of short processing cycle, low investment and low cost

Inactive Publication Date: 2006-01-04
柳州市久源水轮机有限责任公司
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method that can change the excessive concentration of stress at the root of the water bucket without changing the traditional impact runner structure and production process, solve the problem of water bucket fatigue, and achieve the effect of preventing bucket breakage, and It is suitable for the production of small and medium-sized turbine manufacturers, low-input, high-efficiency impact turbine runners

Method used

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  • Impact type waterturbine wheel
  • Impact type waterturbine wheel
  • Impact type waterturbine wheel

Examples

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Embodiment Construction

[0011] The present embodiment includes runner 1, hoop 2, bucket 3.

[0012] At least one hoop 2 is provided on the outer circle of the runner 1, and the hoop 2 connects adjacent buckets 3 to each other.

[0013] exist figure 1 In the shown embodiment of the present invention, an impact runner with a cast-welded structure is taken as an example, and a hoop 2 is welded on both sides of the outer circle. The hoop 2 is connected to the outer edge of the water bucket 3 and is located on the At the largest radius of the runner 1, the hoop 2 is an integral circular hoop. During the manufacturing process, the section of the hoop 2 can be of any shape and material, as long as the strength meets the requirements and the weldability is good. The hoop 2 can be integrally welded, or can be welded in sections. The runners with welded hoops are balanced according to the conventional production process. After the hoop 2 is added, under the impact of the water flow, the stress on the runne...

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Abstract

The impact type water turbine wheel features that the wheel has at least one outer hoop to connect all the buckets successively and the circular hoop is set in the maximum position. The present invention has the advantage of changing the stress state of the buckets to avoid concentrated stress in the roots of the buckets leading to fatigue, crack and breaking while maintaining the basic structure and the production process of traditional impact turning wheel.

Description

technical field [0001] The invention relates to the technical field of hydroelectric power generation equipment, in particular to an impact type water turbine runner. Background technique [0002] Existing impact turbine runners are all composed of wheel discs and water buckets, and their structures mainly contain the following three forms: 1. Integral runners, which are the simplest in structure, have higher strength, and are easy to operate. It is safe, reliable, and light in weight. However, due to the dense arrangement of the buckets, the casting process is extremely complicated, the casting technology level is high, the cost is high, and the processing of the bucket surface is very difficult. And when a bucket breaks or breaks, the entire runner must be replaced. 2, combined type runner, its water bucket and spoke are to manufacture separately, connect together with bolt then. It has the characteristics of simplifying the casting process and low requirements on castin...

Claims

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Application Information

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IPC IPC(8): F03B1/02
CPCY02E10/223Y02E10/20Y02P70/50
Inventor 吴祖仪
Owner 柳州市久源水轮机有限责任公司
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