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Fan bearing seat alignment device and method, installation method and fan for nuclear power station

A technology of an alignment device and an installation method, which is applied to the components of the pumping device for elastic fluid, the pump device, the machine/engine, etc. Problems such as bearing concentricity measurement and adjustment

Active Publication Date: 2020-05-08
LINGAO NUCLEAR POWER +5
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using this method to fix the fan bearings, because it is impossible to measure and adjust the concentricity of the bearings on both sides of the fan, it is difficult to locate the size of the fan rotor, and the bolts connecting the hoop and bracket of the fixed bearing outer ring are easy to loosen, and the fan shaft is in the belt. Under the action of tension, the fastening bolts of the hoop are easy to loosen, resulting in wear of the fan shaft and bearings, the reliability of the fan cannot be guaranteed, and the skill requirements for maintenance personnel are also very high

Method used

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  • Fan bearing seat alignment device and method, installation method and fan for nuclear power station
  • Fan bearing seat alignment device and method, installation method and fan for nuclear power station
  • Fan bearing seat alignment device and method, installation method and fan for nuclear power station

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Embodiment

[0045] Please refer to figure 1 and figure 2 , the present invention provides a fan bearing seat alignment device 100 for a nuclear power plant, which is used to install the bearing seat 20 in the casing 10 of the fan. The fan bearing seat alignment device for a nuclear power plant fan bearing seat alignment device 100 includes a centering bracket 30. The intended bearing 40, the positioning plate 50 and the locking shaft 60, the center of the centering bracket 30 is provided with a first alignment hole 31, and the edge of the centering bracket 30 is used to connect to the outer side of the housing 10 to fix the alignment In the middle bracket 30, a second alignment hole 41 is provided in the center of the pseudo-bearing 40, the pseudo-bearing 40 is installed in the bearing seat 20, the bearing seat 20 abuts the centering bracket 30, and the center of the positioning plate 50 is provided with a third alignment hole 41. The alignment hole 51, the alignment plate 50 abuts agai...

Embodiment 2

[0056] This embodiment discloses a method for aligning a fan bearing seat for a nuclear power plant, using the above-mentioned fan bearing seat alignment device for a nuclear power plant fan bearing seat alignment device 100, and the method includes the following steps:

[0057] The pseudo-bearing 40 is installed in the bearing housing 20 , and the center of the pseudo-bearing 40 is provided with a second alignment hole 41 .

[0058] Install the positioning plate 50 and the bearing seat 210 into the casing 10 of the fan respectively. The center of the positioning plate 50 is provided with a third alignment hole 51 , and the center of the third alignment hole 51 is aligned with the center of the second alignment hole 41 .

[0059] The centering bracket 30 is mounted on the outer side of the housing 10 , and the center of the centering bracket 30 is provided with a first alignment hole 31 , and the center of the first alignment hole 31 is aligned with the center of the second ali...

Embodiment 3

[0064] This embodiment discloses a method for installing a fan bearing seat for a nuclear power plant. The above-mentioned fan bearing seat alignment device 100 for a nuclear power plant is used. The method includes the following steps:

[0065] The pseudo-bearing 40 is installed in the bearing housing 20 , and the center of the pseudo-bearing 40 is provided with a second alignment hole 41 .

[0066] Install the positioning plate 50 and the bearing seat 20 into the casing 10 of the fan respectively. The center of the positioning plate 50 is provided with a third alignment hole 51 , and the center of the third alignment hole 51 is aligned with the center of the second alignment hole 41 .

[0067] The centering bracket 30 is mounted on the outer side of the housing 10 , and the center of the centering bracket 30 is provided with a first alignment hole 31 , and the center of the first alignment hole 31 is aligned with the center of the second alignment hole 41 .

[0068] Insert t...

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Abstract

The invention relates to a special tool for a nuclear power station, and discloses a fan bearing seat alignment device and method, an installation method and a fan for the nuclear power station. The above fan bearing seat alignment device for the nuclear power station comprises a centering support, a bearing piece, a positioning plate, and a locking shaft, wherein a first alignment hole is formedin the center of the centering support, and the edge of the centering support is used for connecting the outer side of an outer shell; a second alignment hole is formed in the center of the bearing piece, the bearing piece is installed in a bearing seat, and the bearing seat is abutted against the centering support; a third alignment hole is formed in the center of the positioning plate, and the positioning plate is abutted against the bearing seat; and the locking shaft penetrates through the first alignment hole, the second alignment hole and the third alignment hole correspondingly, and locks the centering support, the bearing seat and the positioning plate. According to the alignment device, the bearing pedestal can be aligned in the fan shell, the concentricity of the bearing seat anda fan shaft can be guaranteed, the quick disassembly and the quick assembly can be achieved, and the requirement for personnel is not high.

Description

technical field [0001] The invention relates to the technical field of special tools for nuclear power plants, in particular to an alignment device and method for a bearing seat of a fan used in a nuclear power plant, an installation method and a fan. Background technique [0002] Nuclear power plants usually use cooling fans to provide cooling ventilation for generator terminal terminals and to prevent the accumulation of hydrogen in the generator terminal box. The bearings used in the originally purchased fan design are non-standard size bearings, and the failure rate is relatively high when the bearings are installed and fixed, and it is difficult to purchase bearings of the same size in the market. [0003] At present, SKF YET204 type bearings are generally used on site, and the original fan bearing support is changed into a three-section split clamp form, and at the same time, it is connected to the fan volute bracket with bolts. Using this method to fix the fan bearin...

Claims

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Application Information

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IPC IPC(8): F04D29/60F04D29/056F04D29/00F04D25/08
CPCF04D25/08F04D29/002F04D29/056F04D29/0563F04D29/601
Inventor 祝彦飞班艺瀚陆佳星
Owner LINGAO NUCLEAR POWER