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A water turbine impeller

A water turbine and impeller technology, applied in the field of water conservancy and power generation, can solve the problems of high weight, unsatisfactory strength, large rotating force, etc., and achieve the effects of increasing strength, improving strength and toughness performance, and refining surface grains

Inactive Publication Date: 2017-12-01
HUBEI SANLI HEAVY MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As a new energy generation method, hydropower generation has attracted more and more attention from the policy level and the scientific community, and the research on its various components is also extensively carried out. At present, the impellers of water turbines are made of stainless steel. Although the strength is relatively high, but The weight is relatively high, and the rotational force that needs to be overcome during the rotation process is relatively large, so the impeller of the water turbine is also researched in the direction of light weight
However, if ordinary aluminum alloy is used, the strength cannot meet the requirements, so it is urgent to propose a water turbine impeller that meets the requirements of light weight and certain strength.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A water turbine impeller, characterized in that the material of the water turbine impeller is a high-strength impact-resistant aluminum alloy, and the chemical composition of the aluminum alloy is calculated by mass percentage: Cu: 3.6%, Si: 6.8%, Mg: 1.3% , Fe: 0.3%, Mn: 0.5%, Zn: 0.9%, Ni: 0.2%, Er: 0.003%, Gd: 0.002%, Sr: 0.003%, Ti: 0.2, C: 0.03%, and the balance is Al and unavoidable impurities;

[0020] The water turbine impeller is heat treated in the following steps after forming:

[0021] (1) Put the semi-finished water turbine impeller into the intermediate frequency heat treatment furnace, firstly raise the temperature with the furnace to 132°C, keep it for 6 minutes, then raise the temperature with the furnace to 280°C, keep it for 6 minutes, then raise the temperature with the furnace to 480°C, and keep it for 16 minutes , and then water cooled to room temperature;

[0022] (2) Put the semi-finished product obtained in step (1) into the intermediate frequ...

Embodiment 2

[0027] A water turbine impeller, characterized in that the material of the water turbine impeller is a high-strength impact-resistant aluminum alloy, and the chemical composition of the aluminum alloy is calculated by mass percentage: Cu: 3.2%, Si: 6.3%, Mg: 1.3% , Fe: 0.5%, Mn: 0.51%, Zn: 0.9%, Ni: 0.13%, Er: 0.003%, Gd: 0.002%, Sr: 0.003%, Ti: 0.16%, C: 0.03%, and the balance is Al and unavoidable impurities;

[0028] The water turbine impeller is heat treated in the following steps after forming:

[0029] (1) Put the semi-finished product of the turbine impeller into the intermediate frequency heat treatment furnace, raise the temperature to 510°C with the furnace, keep it warm for 15 minutes, and then water cool to room temperature;

[0030] (2) Put the semi-finished product obtained in step (1) into the intermediate frequency heat treatment furnace again, rapidly heat it up to 530°C at a heating rate of 50~80°C / min, keep the temperature for 1.2 hours, and then slowly coo...

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PUM

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Abstract

The invention relates to a water turbine impeller and belongs to the field of hydropower accessories. The inner microstructure of the impeller is improved by reasonably setting component content of the water turbine impeller and through a preparation method, especially a thermal treatment method, the strength and corrosion resistance of the obtained impeller are substantially improved, and therefore the durability and economic efficiency of a hydropower device are totally improved.

Description

technical field [0001] The invention belongs to the field of hydroelectric power generation, in particular to accessories for hydroelectric power generation devices, in particular to a water turbine impeller. Background technique [0002] As a new energy generation method, hydropower generation has attracted more and more attention from the policy level and the scientific community, and the research on its various components is also extensively carried out. At present, the impellers of water turbines are made of stainless steel. Although the strength is relatively high, but The weight is relatively high, and the rotational force that needs to be overcome during the rotation process is relatively large, so the water turbine impeller is also being studied in the direction of light weight. However, if ordinary aluminum alloys are used, the strength cannot meet the requirements, so it is urgent to propose a water turbine impeller that not only meets the requirements of light wei...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/02C22F1/043F03B3/12
CPCC22C21/02C22F1/043F03B3/12Y02E10/20
Inventor 李洪军
Owner HUBEI SANLI HEAVY MACHINERY