Method for measuring and adjusting axial clearance of thrust bearing of shaft seal type nuclear main pump

A thrust bearing and axial clearance technology, applied in mechanical clearance measurement, measuring device, mechanical measuring device, etc., can solve the problems of inability to check the contact situation, large size of parts, complicated installation steps, etc.
CN114136186APending Publication Date: 2022-03-04HARBIN ELECTRIC POWER EQUIP
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HARBIN ELECTRIC POWER EQUIP
Publication Date
2022-03-04

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Abstract

The invention relates to a method for measuring and adjusting the axial clearance of a thrust bearing of a shaft seal type nuclear main pump, which adopts a mode of clamping a thrust disc by a pressure disc and measuring by a dial indicator so as to accurately measure and adjust the axial clearance of the thrust bearing, and comprises the following steps of: completing the assembly of the pressure disc: placing an upper pressure disc (6) on the thrust disc (13); the mandrel (3) is placed on the upper pressure disc (6), the lower pressure disc (11) is installed on the thrust disc (13), the second hexagon-headed bolt (7) penetrates through the lower pressure disc (11) to be tightened with the mandrel (3), the measuring disc (2) is placed on the mandrel (3), and the first hexagon-headed bolt (1) is installed and tightened. According to the invention, the heights of the thrust pads are basically consistent and the gaps between the thrust pads and the thrust disc meet the requirements, so that the problems that the axial movement range of the thrust disc is too large or too small and the gaps between the thrust pads and the thrust disc are different are solved.
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Description

Technical field:

[0001] The invention relates to a method for measuring and adjusting the axial clearance of the thrust bearing of a shaft-sealed nuclear main pump. Background technique:

[0002] The thrust bearing is the main component of the shaft-sealed nuclear main pump in nuclear power plants, and is also a key component of the nuclear main pump. The control of the axial clearance of the thrust bearing is particularly important for the normal operation of the shaft-sealed nuclear main pump and the localization of the main pump manufacturing technology. The precise adjustment of the thrust bearing axial clearance has always been a technical problem. The traditional dummy shaft adjustment process has complicated installation steps, uses large and many parts, and has high requirements for the site. The adjustment method requires a special motor support installation platform and large hydraulic lifting equipment. The process is used for thrust bearings. When there is an ax...

Claims

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