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Water turbine guide vane thrust gap adjusting structure

A gap adjustment and water turbine technology, applied in the fields of hydropower, mechanical equipment, machines/engines, etc., can solve the problems of time-consuming and manpower, and achieve the effect of ensuring the quality of maintenance, saving time and manpower, and shortening the maintenance period.

Active Publication Date: 2014-08-27
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The traditional method of adjusting the thrust clearance often consumes time and manpower, and has a lot to do with the experience of the construction personnel

Method used

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  • Water turbine guide vane thrust gap adjusting structure
  • Water turbine guide vane thrust gap adjusting structure
  • Water turbine guide vane thrust gap adjusting structure

Examples

Experimental program
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Effect test

Embodiment 1

[0013] Embodiment 1: A structure for adjusting the thrust gap of the guide vane of a water turbine, participated in figure 1 and figure 2 A guide vane sleeve 2 is fixedly installed on the inner side and upper side of the center hole of the top cover 1, and an L-shaped movable guide vane 3 is fixedly connected to the lower end of the tubular guide vane crank arm 4; the L-shaped guide vane thrust ring 5 is reversed On the upper side of the L-shaped movable guide vane 3 , and the L-shaped guide vane thrust ring 3 is fixed on the upper side of the guide vane sleeve 2 and the top cover 1 .

[0014] see image 3 , an upper gasket 6 is placed between the upper end surface of the turned-out edge of the L-shaped movable guide vane 3 and the lower end surface of the L-shaped guide vane thrust ring 5; A lower gasket 8 is placed between the upper end surfaces of the leaf sleeve 2, as shown in the thrust gap C in the figure. The upper gasket 6 and the lower gasket 8 are respectively pr...

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Abstract

The invention discloses a water turbine guide vane thrust gap adjusting device. L-shaped wedge plates are symmetrically arranged in an adjusting gap between an L-shaped guide vane thrust ring and a guide vane sleeve in a padding mode, an adjusting screw rod is transversely installed at the corner positions of the L-shaped wedge plates, and the inner end face of the adjusting screw rod makes contact with the outer end face of the L-shaped guide vane thrust ring. Two 1:20 slopes are processed between each fixing bolt hole and each pin hole in the two sides of the guide vane thrust ring, the L-shaped wedge plates with the installation gradient being 1:20 are installed at the bottom of the thrust ring, the in-out depth of the wedge plates is increased and decreased by adjusting the screw rod, and therefore the guide vane thrust gap is adjusted. The water turbine guide vane thrust gap adjusting device can save time and labor, is convenient to operate, can play a great role in the unit overhaul period, and can shorten the overhaul project duration on the premise that the overhaul quality is ensured.

Description

technical field [0001] The invention relates to the improvement technology of water turbine components in the technical field of pumped storage energy, and in particular relates to a structure for adjusting the thrust gap of guide vanes of the water turbine. Background technique [0002] The guide vane thrust gap of the water turbine (pump turbine) is the gap between the guide vane thrust ring and the guide vane arm. The guide vane thrust ring is fixed on the top cover, and the guide vane arm is integrated with the movable guide vane. The installation requirement of the thrust clearance is between 0.10mm and 0.15mm. The adjustment of the thrust clearance is to reduce the lift-up of the guide vane by reducing the clearance between the thrust ring and the crank arm. Ensure that when the unit is running, the guide vanes will not move upwards too much under the action of water thrust and scratch the upper wear plate. During the maintenance of the unit, after the gap ratio of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03B3/18
CPCY02E10/223Y02E10/20
Inventor 秦鸿哲张旭贾先锋陈小冲王磊
Owner STATE GRID CORP OF CHINA
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