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Runner blade repairing process

A runner blade and blade technology, applied in the field of runner blade repair technology, can solve the problems of low process efficiency, unstable repair quality, long cycle, etc., and achieve the effect of high repair quality, low cost, and short manufacturing cycle

Inactive Publication Date: 2020-08-11
德阳天蜀机械设备制造有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of low process efficiency, long cycle and unstable repair quality by manual partial cutting and grinding in the repair of water turbine blades in the prior art, a runner blade repair process is provided.

Method used

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Embodiment Construction

[0022] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0023] A runner blade repair process is characterized in that it comprises the following steps:

[0024] a. Determine the size to be cut according to the wear condition, and cut the water outlet edge and the water discharge cone of all the blades in the turbine according to the size;

[0025] b. Cast a new blade blank, and mill out the blade patch with the same shape and size as the cut blade part on the CNC gantry milling machine, and mill out the welding groove of the blade patch at the same time;

[0026] c. Blow and cut the notch of the shedding part of the turbine blade to be smooth, and use ...

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Abstract

The invention discloses a runner blade repairing process, belongs to the technical field of hydraulic turbine runner blade repairing, and solves the problems of low process efficiency, long period andunstable repairing quality caused by manual local cutting and grinding during hydraulic turbine blade repairing in the prior art. The runner blade repairing process specifically comprises the following steps that a, water outlet edge parts of all blades and a runner cone in the hydraulic turbine are cut off according to the size; b, new blade blanks are cast, blade patches are formed through milling on a numerical control planer type milling machine, and meanwhile, welding grooves of the blade patches are formed through milling together; c, notches of the falling parts, obtained after cutting, of the blades of the hydraulic turbine are blown and cut to be be smooth, and welding grooves consistent with those of the blade patches are machined by using a numerical control boring machine; d,the blade patches are welded to the notches of the original blades in an inlaid mode; and e, a sample plate is used for checking to guarantee the reliability of the welded blades, and then all the blade patches are connected with the original blades in sequence. According to the runner blade repairing process, the blade repairing quality is high, the manufacturing period is short, and the cost islow.

Description

technical field [0001] The invention belongs to the technical field of water turbine repair, and in particular relates to a runner blade repair process. Background technique [0002] A water turbine is a power machine that converts the energy of water flow into rotational mechanical energy, and it belongs to the turbomachinery in fluid machinery. As early as around 100 BC, the prototype of the water turbine appeared in China - the water wheel, which was used to lift irrigation and drive grain processing equipment. Most modern water turbines are installed in hydropower stations to drive generators to generate electricity. In a hydropower station, the water in the upstream reservoir is led to the turbine through the diversion pipe, which drives the turbine runner to rotate and drives the generator to generate electricity. The water that has done work is discharged downstream through the tail water pipe. The higher the water head and the greater the flow, the greater the out...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00B23P6/00F03B3/12
CPCB23P6/00B23P6/002B23P15/00F03B3/12Y02E10/20Y02P70/50
Inventor 毛向阳
Owner 德阳天蜀机械设备制造有限公司
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