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Water turbine pole iron-core press-fit method

A technology for pole cores and water turbines, applied in electromechanical devices, manufacturing motor generators, electrical components, etc., can solve the problems of uneven force on pole core punching pieces, affecting the quality of pole cores, and easy arching of pole cores, etc. The effect of simple pressure control, convenient operation and easy manipulation

Active Publication Date: 2012-05-30
上海电气集团上海电机厂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] like figure 1 As shown, the existing pole core pressing method is to position the pole core punching piece at the upper shoulder blade 101 of the pole core 100, and such a positioning method leaves no place for the pressure holding device to be placed.
In addition, the existing pole core press-fitting method also has defects such as uneven force on the pole core punching sheet, easy arching of the pole core, etc., which affects the quality of the pole core

Method used

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  • Water turbine pole iron-core press-fit method
  • Water turbine pole iron-core press-fit method
  • Water turbine pole iron-core press-fit method

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Embodiment Construction

[0019] Such as figure 2 As shown, the hydraulic turbine magnetic pole core press-fitting method of the present invention sequentially includes a positioning step, a pressurizing and maintaining pressure step, and a welding step.

[0020] which, combined with image 3 As shown, the positioning step is to use the positioning track 200 to position the pole core punching pieces at the two lower shoulder blades 102 of the pole core 100 .

[0021] combine Figure 4 As shown, the steps of pressurizing and maintaining pressure are to use hydraulic device 300 to pressurize and maintain the pressure on the pole core 100 at the two upper shoulder blades and the double T tails. In the present invention, the pressure of the magnetic pole core of the water turbine is 300kN, and it is required to be pressed in sections. If the tightening force is large with the screw rod, it will take a long time, so the hydraulic device 300 is used to pressurize and maintain the pressure. The hydraulic ...

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Abstract

The invention relates to a water turbine pole iron-core press-fit method which comprises positioning step, pressurization step, pressure-keeping step and welding step, wherein the welding step is to weld a product tension rod penetrating in the screw hole of the stamped steel of the pole iron-core with end plates on two ends of the pole iron-core; the positioning step is to position the stamped steel of the pole iron-core at the two lower shoulder blades of the pole iron-core; and the pressure-keeping step is to pressurize and keep the pressure of the pole iron-core with a hydraulic device atthe two upper shoulder blades of the pole iron-core and double T-shaped tails. The water turbine pole iron-core press-fit method has the advantage that the process is simple, the control is easy, thehumping of the pole iron-core can be avoid, the advantage--straightness of the pole iron-core can be ensured, and the quality of the pole iron-core of the water turbine can be increased.

Description

technical field [0001] The invention belongs to the technical field of water turbines, and relates to a magnetic pole iron core of a water turbine, in particular to a press-fitting method for a magnetic pole iron core of a water turbine. Background technique [0002] The structure of the magnetic pole core of the hydraulic turbine is completely different from that of the usual magnetic pole core. The usual magnetic pole core is fastened by two-end nuts. The fastening of the hydraulic turbine magnetic pole core adopts the welding structure of the screw and the end plate. Therefore, the welding of the hydraulic turbine magnetic pole core must be done by pressing. The assembly tool is welded under pressure. [0003] Such as figure 1 As shown, the existing pole core press-fitting method is to position the pole core punching piece at the upper shoulder 101 of the pole core 100 , and this positioning method leaves no place for the pressure holding device to be placed. In additio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K15/00
Inventor 滕文江张雪英
Owner 上海电气集团上海电机厂有限公司
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