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Overspeed protection test bed and overspeed protection test method

An overspeed protection, test bench technology, applied in the testing of mechanical parts, the testing of machine/structural parts, pump control, etc., can solve the problems of high cost, time-consuming and laborious overspeed protection test, avoid damage and save costs The effect of smooth consumption and speed control

Pending Publication Date: 2020-12-15
CHINA GENERAL NUCLEAR POWER OPERATION +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Based on this, it is necessary to provide an overspeed protection test bench and an overspeed protection test method for the problems that the overspeed protection test is time-consuming, laborious and costly, and it is impossible to test the flyweight in advance to adjust the position of the flyweight

Method used

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  • Overspeed protection test bed and overspeed protection test method
  • Overspeed protection test bed and overspeed protection test method
  • Overspeed protection test bed and overspeed protection test method

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Embodiment Construction

[0070] The present invention will be further described below in conjunction with accompanying drawing.

[0071] In order to facilitate the understanding of the present invention, various embodiments of the present invention defined by the claims will be described more fully below with reference to the relevant drawings. Preferred embodiments of the invention have been shown in the drawings, which contain various specific details to facilitate that understanding but which should be regarded as exemplary only. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. Accordingly, those of ordinary skill in the art will recognize that changes and modifications of the various embodiments described herein can be made without departing from the scope of the invention as defined in the appended claims. Also, descriptions of well-known functions and constructions may be omitted for clarity and conciseness.

[0072]...

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Abstract

The invention relates to an overspeed protection test bed and an overspeed protection test method, and the test bed comprises a support which is internally provided with an accommodation cavity whichis used for accommodating a rotor flyweight assembly which can rotate around an axis; a speed measuring device, arranged on the support and used for measuring the rotating speed of the rotor fly ballassembly; a driving device, connected with the rotor flyweight assembly and used for providing driving force for the rotor flyweight assembly; and a action recording device, arranged on the support and used for recording the flying-out action of the flyweight in the rotor flyweight assembly. According to the embodiment, an off-line test function can be realized without being influenced by the state of an on-line unit or being executed in a thermal shutdown time window, so that the test bed is not limited by time. According to the embodiment, whether the rotor flyweight assembly can normally rotate or not can be detected, whether the flyweight in the rotor flyweight assembly can fly out when the preset highest rotating speed is just reached or not can be detected, and the position of the flyweight can be adjusted.

Description

technical field [0001] The invention relates to the field, in particular to an overspeed protection test bench and an overspeed protection test method. Background technique [0002] The auxiliary feedwater pump of nuclear power is a centrifugal pump driven by a steam turbine, and its main function is to provide feedwater to the secondary side of the evaporator when the evaporator loses normal feedwater. [0003] The nuclear power auxiliary feedwater pump runs at a high speed, with a maximum speed of 9850r min -1 . Once an overspeed fault occurs, it will cause great harm to the equipment and personnel. Therefore, in order to ensure the safety of the equipment, the pump is equipped with a mechanical overspeed protection device. When the speed exceeds the set value of the flyweight on the rotor, the flyweight flies and the overspeed protection device operates to cut off the steam supply to shut down the steam pump. Therefore, the overspeed protection device is an extremely i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/00F04D15/02
CPCG01M13/00F04D15/0254
Inventor 邢兴龙杨忠付英民司晓贞宁飞虎白阳刘闯铭毕文策李友军彭超明郭凯周航杨洋刘嘉宾蔡伟涛陈朝晖钱青锋田贝
Owner CHINA GENERAL NUCLEAR POWER OPERATION
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