Variable-speed pumped storage generator motor rotor winding end socket insulating box fixing structure

A generator motor and rotor winding technology, applied to the shape/style/structure of winding insulation, electric components, windings, etc., can solve problems such as increased cavitation, low efficiency of water turbines, wear and vibration, etc., to improve reliability and facilitate Installation, the effect of preventing direct contact

Inactive Publication Date: 2016-09-21
HARBIN ELECTRIC MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional pumped storage power generation motors are constant-speed units. In pumped storage power stations with large head changes, there are problems such as low turbine efficiency, increased cavitation, and increased wear and vibration.

Method used

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  • Variable-speed pumped storage generator motor rotor winding end socket insulating box fixing structure
  • Variable-speed pumped storage generator motor rotor winding end socket insulating box fixing structure
  • Variable-speed pumped storage generator motor rotor winding end socket insulating box fixing structure

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Experimental program
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Effect test

Embodiment Construction

[0019] Such as figure 1 As shown in the figure, the rotor winding of the variable speed pumped storage generator motor adopts strip-type wire rods made of red copper. During operation, a large current passes through the wire rods. Pay attention to the insulation between the winding ends. The large-scale variable-speed pumped-storage generator motor rotor winding terminal insulation box fixing structure proposed by the present invention is composed of a connected insulation box 1, a fixed screw rod 2, a fixed frame 4, an insulating block 5, and a fixed nut 6; the connected insulation box 1 It is made of high-strength insulating material through molding and machining. It is composed of three cavities arranged in a fan shape. Each cavity corresponds to a rotor winding end 3. There is a groove between two adjacent cavities for penetration. Through the fixed screw 2; the fixed screw 2 is made of non-magnetic material, U-shaped structure, and the outer side is covered with insulati...

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PUM

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Abstract

The present invention aims to disclose a variable-speed pumped storage generator motor rotor winding end socket insulating box fixing structure. The fixing structure is composed of a connected insulating box, fixing screws, a fixing rack, an insulating block and fixing nuts, the connected insulating box is made of a high strength insulating material, three cavities are in fan-shaped arrangement, and each cavity corresponds to a rotor winding end socket. A groove is arranged between the adjacent cavities, and the corresponding fixing screw penetrates the groove. Each fixing screw is made of a non-magnetic material and is a U-shaped structure, the insulating material wraps the outer side of the fixing screw, and the fixing screw cooperates with the insulating block and the corresponding fixing nuts to penetrate the groove of the connected insulating box and is fixed on the fixing rack at the inner side of a generator motor rotor winding. The structure solves the fixing and insulation technical problems of the generator motor rotor winding end sockets, at the same time, can adapt to the axial extension of the generator motor rotor winding caused by the temperature rise.

Description

technical field [0001] The invention relates to the technical field of pumped-storage generator motors, and provides a large-scale variable-speed pumped-storage generator motor rotor winding terminal insulation box fixing structure. Background technique [0002] The pumped storage power station has multiple functions such as peak regulation, valley filling, frequency regulation, phase regulation and emergency backup, and has the characteristics of flexible operation and fast response. With the rapid development of solar energy and wind power in our country, the power system needs a large number of pumped storage power stations to adjust the peak and valley of electricity consumption. Conventional pumped-storage power generation motors are constant-speed units. In pumped-storage power stations with large head changes, there are problems such as low turbine efficiency, increased cavitation, and increased wear and vibration. [0003] Three-phase AC excitation windings are used...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K3/51H02K3/38
CPCH02K3/51H02K3/38
Inventor 刘宇王岩禄乔照威陈爽马永良李洪超田昕李悦卢嘉溪
Owner HARBIN ELECTRIC MASCH CO LTD
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