Hydraulic generator mirror plate grinding apparatus and process

A technology for hydroelectric generators and grinding devices, which is applied to machine tools for surface polishing, grinding/polishing equipment, metal processing equipment, etc., and can solve problems such as shortening the operating cycle of the unit, failure to repair, and economic loss of the power plant, so as not to affect the The effect of putting into operation cycle, ensuring processing quality and improving economic benefits

Inactive Publication Date: 2007-06-06
DEYANG DONGRUI POWER STATION EQUIP
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AI Technical Summary

Problems solved by technology

The quality of on-site manual grinding is difficult to guarantee, and the efficiency is very low, which often delays the maintenance time, shortens the operating cycle of the unit, and causes major economic losses to the power plant
The mirror plate is a large part, big and heavy, with a diameter of more than 4M and a weight of more than 25 tons. If it is transported back to the manufacturer for grinding, it must be transported by large vehicles and roads. The transportation is difficult and costly; and the repair period is very long and the maintenance period is long. The interior cannot be repaired, and the power plant must be equipped with spare mirror plates to meet production needs, which increases the investment of the power plant

Method used

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  • Hydraulic generator mirror plate grinding apparatus and process

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Embodiment Construction

[0023] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0024] Referring to FIG. 1 : the grinding device for the mirror plate of the hydroelectric generator includes a base 4 , an upper support 15 , a cantilever 3 , a grinding mechanism, and a driving device 5 .

[0025] The base 4 is a hollow structure welded by steel plates, has a horizontal top plate, and has a hole in the center of the top plate.

[0026] The upper support 15 is also a hollow structure welded with steel plates, and a thrust bearing 13 is arranged on its top plate;

[0027] The swing arm 3 is supported on the thrust bearing 13, wherein the upper end of the shaft 12 is fixedly connected with the swing arm 3 through the key 11, and the lower end thereof extends into the upper support 15. The working end of the swing arm 3 is provided with a grinding mechanism, which is composed of a grinding head 17, a universal joint 18, and a grinding head rod 19 conn...

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Abstract

The hydraulic generator runner plate grinding apparatus includes one hollow pedestal possessing horizontal top plate with one central hole, one coaxial hollow bottomless upper bracket possessing horizontal top plate with one thrust bearing, one horizontal rotating arm on the thrust bearing and with one vertical shaft stretching into the upper bracket space and one grinding mechanism in the work end, one vertical reducing drive unit with one output shaft penetrating the central hole in the pedestal and stretching into the upper bracket space, and one pair of shaft couplers to connect the rotating arm shaft and the output shaft separately. The grinding process includes the following steps: fixing the runner plate and the grinding plate levelly on the platform, grinding while adding engine oil and W20 emery and in the grinding head linear speed of 2.7-3.5 m/s and grinding head pressure of 0.6-1.0 kg/sq cm, and polishing with polishing disc while adding kerosene and grinding paste.

Description

technical field [0001] The invention relates to a grinding device, in particular to a grinding device and method for a mirror plate of a hydraulic generator. Background technique [0002] The mirror plate of the hydro-generator is an important part of the hydro-generator set. The mirror plate is in the shape of a ring, and one of its end faces is the working surface. After the unit runs for a period of time (one maintenance cycle), the smoothness of the working surface of the mirror plate decreases and the roughness increases. It is necessary to grind and polish the working surface to repair the mirror plate. [0003] The traditional repair of the mirror plate is to manually grind or dismantle the mirror plate on site and transport it back to the manufacturer for mechanical grinding. The quality of on-site manual grinding is difficult to guarantee, and the efficiency is very low, which often delays the maintenance time, shortens the operating cycle of the unit, and causes m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B29/02
Inventor 杨晏
Owner DEYANG DONGRUI POWER STATION EQUIP
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