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Nuclear power generator stationary blade seat disassembling and assembling tool and method

A technology for generators and generator rotors, which is applied in the field of maintenance of nuclear power plants, and can solve problems such as overhaul delays, equipment damage, and stator blade bending

Pending Publication Date: 2021-08-31
YANGJIANG NUCLEAR POWER +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the applicant found that when overhauling the above-mentioned type of nuclear power generator, the removal process of the vane seat provided by the manufacturer is very cumbersome and requires a long construction period
At the same time, since the stator blade seat is a precision device, the current disassembly process lacks protection for the stator blade, which may easily lead to bending of the stator blade and damage to the equipment, resulting in delays in the overhaul period

Method used

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  • Nuclear power generator stationary blade seat disassembling and assembling tool and method
  • Nuclear power generator stationary blade seat disassembling and assembling tool and method
  • Nuclear power generator stationary blade seat disassembling and assembling tool and method

Examples

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Effect test

Embodiment 1

[0049] This embodiment provides a disassembly and assembly tool for a stator blade seat of a nuclear power generator. see Figure 4 , the dismounting tool includes a crossbeam slide rail 1; the bottom of the crossbeam slide rail 1 is provided with a first suspension block 4 and a second suspension block 6 that can slide along the crossbeam slide rail 1, and the first suspension block The lower end of 4 and the lower end of the second hanging block 6 are respectively connected to the first chain block 5 and the second chain block 7; Two installation parts 3; the first installation part 2 and the second installation part 3 are used for fixed connection with the generator base; the first chain hoist 5 and the second chain hoist 7 are used for hooking respectively At the front and rear ends of the vane seat. By using the dismounting tool, the hoisting and translation of the stator blade seat can be realized, and the stator blade seat can be driven to rotate around the central ax...

Embodiment 2

[0085] This embodiment provides a method for disassembling and assembling a stator blade seat of a nuclear power generator.

[0086] The disassembly method comprises the steps of:

[0087] Step S1, removing a vane seat directly above the generator rotor;

[0088] Step S2, using the dismounting tool to lift out the stator blade seat directly above the generator rotor;

[0089] Step S3, using the dismounting tool to rotate the vane seat located at the upper left of the generator rotor around the axis of the generator rotor to directly above the generator rotor, and then implement step S2;

[0090] Step S4, using the disassembly tool to rotate the vane seat located at the upper right of the generator rotor around the axis of the generator rotor to directly above the generator rotor, and then implement step S2;

[0091] Step S5, after fixing the stator blade seat on the lower side of the generator rotor, rotate the rotor to turn the stator blade seat on the lower side of the gen...

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Abstract

The invention discloses a nuclear power generator stationary blade seat disassembling and assembling tool and method. The disassembling and assembling tool comprises a cross beam sliding rail. A first hanging block and a second hanging block which can slide along the cross beam sliding rail are arranged at the bottom of the cross beam sliding rail, and the lower end of the first hanging block and the lower end of the second hanging block are connected with a first chain block and a second chain block respectively; a first mounting part and a second mounting part which are spaced front and back are arranged at the top of the cross beam sliding rail; the first mounting part and the second mounting part are used for fixedly connecting a generator base; the first chain block and the second chain block are used for being hooked and hung at the front end and the rear end of the stationary blade seat respectively. By using the disassembling and assembling tool, the stationary blade seat is driven to rotate around the central axis of the movable blade seat on the surface of the movable blade seat of the generator rotor, and the step of adjusting the stationary blade seat to be hoisted out to the position over the motor rotor can be greatly simplified. Therefore, accidental damage to the stationary blade can be effectively prevented, the disassembling and assembling process is simplified, use and control are convenient, working efficiency is effectively improved, and the construction period is shortened.

Description

technical field [0001] The invention relates to the technical field of nuclear power plant maintenance, in particular to a disassembly tool and method for a stator blade seat of a nuclear power generator. Background technique [0002] The biggest difference between the QFSN-1100-4 1100MW nuclear power generator and other generator sets is that the front end adopts the axial flow multi-stage compression fan design (8 stages in total), and the corresponding position is designed with stator blades (6 pieces in total in one circle) , The cooling system of the generator adopts the cooling method of multi-stage axial flow and stator blade seat, and the cooling effect is good. [0003] However, the applicant found that when overhauling the above-mentioned type of nuclear power generator, the removal process of the vane seat provided by the manufacturer is very cumbersome and requires a long construction period. At the same time, since the stator blade seat is a precision device, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K15/00
CPCH02K15/0006
Inventor 任锋周燕曹登洪王进梁伟乔志刚高国丰田志伟郭奇饶海滨陈俊开赵俊衣海伟马烨一李鹏飞
Owner YANGJIANG NUCLEAR POWER
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