Ultra-thin plate type heater and manufacturing method thereof

A technology of heater and ultra-thin plate, which is applied in the direction of ohmic resistance heating, electric heating device, manufacturing stator/rotor body, etc., can solve the problems of inapplicability, and achieve the effect of fast heating speed, not easy to bend, and low energy consumption

Active Publication Date: 2008-12-31
JIANGSU YINONE ELECTRIC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the new rotor structure is completely different from the traditional rotor structure, and the yoke lam

Method used

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  • Ultra-thin plate type heater and manufacturing method thereof
  • Ultra-thin plate type heater and manufacturing method thereof
  • Ultra-thin plate type heater and manufacturing method thereof

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Embodiment Construction

[0022] The invention is an ultra-thin plate heater and a manufacturing method thereof. The heater includes a lead wire 5, and is characterized in that the heater is provided with a rectangular thin-plate housing 1 whose length and width match the air flow grooves of the turbine generator rotor, and two thin silicon wafers are arranged longitudinally on both sides of the housing. 2. Between the two silicon wafers, on both sides of the longitudinal centerline, two thin heating elements 3 are arranged in parallel and symmetrically. In addition, in order to increase the strength, riveting holes 4 are evenly arranged on the longitudinal center line of the rectangular thin-plate housing 1.

[0023] The manufacturing method of the present invention is: the ultra-thin plate heater shell is composed of an upper plate 8 and a lower plate 9 respectively, and folds are arranged around the upper plate 8. The production process is like this:

[0024] First, cut the upper and lower plates, the t...

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Abstract

The invention relates to a ultrathin plate type heater for performing scene shrink on a hydraulic generator rotor yoke, namely heating and a preparation method thereof. The heater is provided with a rectangle thin plate type case, and two thin silicon wafers are arranged vertically on two sides near the case. Two thin heating elements are arranged in parallel and symmetrically at the two sides of a vertical center line between two silicon wafers. In the preparation of the invention, the case is composed of an upper plate and a lower plate, and flanges are arranged around the upper plate. First, the upper plate, the lower plate, the thin silicon wafers, the heating elements are cut out one by one according to the set sizes, then the silicon wafer, the heating elements, the silicon wafer are laid in turn on the lower plate. An educe wire is joined from one end of the heating element, the upper cover is covered and the flanges are folded. Riveting holes arranged along a center line equispacedly rivet the upper plate and the lower plate relatively one by one. Total thickness of the heater, thicknesses of the case, the heating element, the silicon wafers are controlled according to certain range.

Description

Technical field [0001] The invention relates to a heater and a manufacturing method thereof, in particular to an ultra-thin plate heater used for on-site heating of the rotor yoke of a hydroelectric generator, and a manufacturing method thereof. Background technique [0002] The rotor yoke of the hydro-generator generates a great centrifugal force when the unit of a hydropower station is in operation, and the larger the diameter of the rotor or the higher the speed, the larger the separation gap, which will not only cause the unit to swing and vibrate , It will even cause the hook on the rotor support column to break due to impact, causing a major accident. Therefore, when the rotor is assembled, after the yoke is stacked, the yoke must be keyed, and the yoke and the rotor support must be given in advance. A pre-tightening force is applied to make the radial tightness of the yoke and the rotor support meet the requirements of the unit operation. The keying of the yoke is generall...

Claims

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Application Information

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IPC IPC(8): H05B3/20H02K15/02
Inventor 周桂根马达朱恩华
Owner JIANGSU YINONE ELECTRIC
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