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Water turbine runner positioning, assembling and welding method based on wedge-shaped auxiliary devices

A technology for auxiliary devices and water turbines, applied in auxiliary devices, auxiliary welding equipment, welding/cutting auxiliary equipment, etc., can solve the problems of assembly, poor positioning accuracy, reduce labor intensity, reduce production costs, etc., and achieve compensation for welding shrinkage, The effect of simplifying the assembly process and improving the accuracy of assembly and welding

Pending Publication Date: 2022-02-08
DONGFANG ELECTRIC MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the deficiencies of the above-mentioned technical solutions, and to solve the manufacturing technology bottleneck problem caused by the poor assembly and positioning accuracy of the existing water pump turbine runner. Based on the two starting points of precise assembly of the runner and shortened assembly cycle, a wedge-shaped auxiliary The positioning and welding method of the hydraulic turbine runner of the device can reduce labor intensity, shorten the assembly cycle, and reduce production costs to a certain extent while ensuring accurate assembly positioning and versatility

Method used

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  • Water turbine runner positioning, assembling and welding method based on wedge-shaped auxiliary devices
  • Water turbine runner positioning, assembling and welding method based on wedge-shaped auxiliary devices
  • Water turbine runner positioning, assembling and welding method based on wedge-shaped auxiliary devices

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Embodiment 1

[0046] This embodiment discloses a water turbine runner positioning and welding method based on a wedge-shaped auxiliary device 4. As a basic embodiment of the present invention, the positioning and welding of the runner is carried out in reverse order, including component processing, wedge-shaped installation Auxiliary device 4, component positioning and component assembly.

[0047] Said component processing: set a unified processing standard by a numerical control machine tool, and process all the components of the runner under the processing standard, and the components include the upper crown blisk 1, the inner ring blisk 2 and the outer ring blisk 3; During the processing of each component, a number of pin holes for assembly are processed on the upper crown blisk 1, positioning pins are processed on the inner ring blisk 2 and the outer ring blisk 3, and are marked and recorded or stamped with a serial number. way, so that the pin holes correspond to the positioning pins o...

Embodiment 2

[0060] This embodiment discloses a positioning and welding method for a turbine runner based on a wedge-shaped auxiliary device 4. As a preferred embodiment of the present invention, the positioning and welding of the runner is carried out in reverse order, including component processing and wedge-shaped auxiliary installation. Device 4, component positioning and component assembly.

[0061] Component processing: set a unified processing standard through the CNC machine tool, and process all the components of the runner under the processing standard. In the process of component processing, a number of pin holes for assembly are processed on the upper crown blisk 1, positioning pins are processed on the inner ring blisk 2 and the outer ring blisk 3, and by marking records or stamping numbers, Make the pin holes correspond to the positioning pins one by one.

[0062] Install wedge-shaped auxiliary device 4: Prepare a number of wedge-shaped auxiliary devices 4. When processing t...

Embodiment 3

[0074] This embodiment discloses a positioning and welding method for a turbine runner based on a wedge-shaped auxiliary device 4. As a preferred embodiment of the present invention, the positioning and welding of the runner is carried out in reverse order, including component processing and wedge-shaped auxiliary installation. Device 4, component positioning and component assembly.

[0075]Said component processing: set a unified processing standard through the numerical control machine tool, and process all the components of the runner under the processing standard, including the upper crown blisk 1, the inner ring blisk 2 and the outer ring blisk 3; During the crown blisk 1 period, in the flow channel processing process of the upper tube blisk, through three-dimensional modeling and numerical control programming, a number of pin holes for assembly are processed on the upper blisk 1, and reserved in the flow channel for installing wedges. The boss structure 5 of the auxiliar...

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Abstract

The invention relates to the technical field of water pump turbine runner sub-disc assembling and welding accurate positioning, in particular to a water turbine runner positioning, assembling and welding method based on wedge-shaped auxiliary devices. According to the present invention, a runner is positioned, assembled and welded by adopting an inverted assembly sequence, an upper crown blade disc, an inner ring blade disc and an outer ring blade disc are machined by setting a unified machining reference through a numerical control machine tool, and the wedge-shaped auxiliary devices are arranged in the circumferential direction of the upper crown blade disc at intervals and installed in a flow channel of the upper crown blade disc; the upper crown blade disc is adjusted to move upwards on an assembling platform to be aligned and fixed; and the inner ring blade disc and the outer ring blade disc are sequentially placed and adjusted to weld all the assembly components according to the structural requirement of a rotating wheel, and a welding flux is waited to be cooled. According to the technical scheme, on the basis of two starting points of accurately assembling the rotating wheel and shortening the assembly period, the labor intensity is reduced to a certain extent, the assembly period is shortened, and the production cost is reduced to a certain extent while the assembly accurate positioning and universality are guaranteed.

Description

technical field [0001] The invention relates to the technical field of precise positioning of a water pump and turbine runner by plate assembly and welding, in particular to a positioning and welding method for a water turbine runner based on a wedge-shaped auxiliary device. Background technique [0002] Pumped storage power plants play an important role in my country's power system. Its units use two working conditions: water pumps and turbines, and undertake functions such as peak shaving and valley filling, seasonal storage and other functions. The ultra-high head pump turbine has the characteristics of high head, high speed, large capacity, and complex operating conditions. Therefore, the deviation control of the installation and welding size of the pump turbine runner is extremely strict, especially the opening size of the runner, so as to ensure the stable and efficient operation of the unit. [0003] The traditional method of assembling and positioning the runners of...

Claims

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Application Information

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IPC IPC(8): B23K37/04
CPCB23K37/0443Y02E10/20
Inventor 乔杰陈道全吴家奎王大伦冯涛范潇胡章洪
Owner DONGFANG ELECTRIC MACHINERY
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