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Friction force test device for reactor control rod driving mechanism

A driving mechanism and test device technology, which is applied in the control of nuclear reactions, reactors, nuclear reactor monitoring, etc., can solve the problems of prone to human error, high physical energy consumption, and slow lifting speed, so as to achieve good reference significance and reduce the exposure dose , the effect of improving work efficiency

Pending Publication Date: 2020-06-19
JIANGSU NUCLEAR POWER CORP
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  • Abstract
  • Description
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Problems solved by technology

During this process, personnel need to observe the lifting height of the driving rod at all times, which is prone to human error; the lifting speed of the crane is 1.5m / min, the lifting speed is slow, and the work efficiency is low; when the driving rod is lifted, the crane driver needs to always control the lifting button, and physical Large consumption, if the lifting process is interrupted, it needs to be tested again

Method used

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  • Friction force test device for reactor control rod driving mechanism

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Embodiment Construction

[0024] The friction force test device for the driving mechanism of the reactor control rod provided by the present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0025] Such as figure 1 As shown, the invention provides a reactor control rod driving mechanism friction test device, including: servo motor 1, steel cable 2, hook 3, loop sling, S-type tension sensor 5, driving rod transportation tool 7, driving rod 8. Safety harness 9, driver 10, power supply 11, collector 12, analog signal transmitter 13, industrial computer 14, hanging ear 15, and power cord signal;

[0026] The driver 10 is suspended under the cantilever through the hanging ears 15. The driver 10 is provided with a servo motor 1 inside. The driving end of the servo motor 1 is connected to the hook 3 through a steel cable 2, and the lower end of the hook 3 is suspended with an S-shaped tension through an annular sling-4 Sensor 5, S-type tension sensor 5 ...

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Abstract

The invention belongs to the technical field of nuclear power station reactor maintenance, and specifically relates to a friction force test device for a reactor control rod driving mechanism. The friction force test device comprises a servo motor, a steel cable, a lifting hook, annular lifting belts, an S-shaped tension sensor, a driving rod transportation tool, a driving rod and a driver, wherein the driver is hung below a cantilever crane through hanging lugs; the servo motor is arranged in the driver; the driving end of the servo motor is connected with the lifting hook through the steel cable; the S-shaped tension sensor is hung at the lower end of the lifting hook through a first annular lifting belt; the driving rod transportation tool is hung on the S-shaped tension sensor througha second annular lifting belt; and the driving rod is hung on the driving rod transportation tool. According to the invention, manpower is liberated; the working efficiency and reliability are improved; and the possibility of errors caused by human factors is eliminated.

Description

Technical field [0001] The invention belongs to the technical field of nuclear power plant reactor maintenance, and specifically relates to a friction force test device for a reactor control rod drive mechanism. Background technique [0002] The reactor control rod drive mechanism is an important part of the reactor core. It is mainly used to move the control rod up and down and fix it at the top and bottom or a certain position in the middle. The position information of the control rod can be determined by the position indicator. By using the control rod The drive mechanism inserts or lifts the control rod from the core to achieve power start, power control, and shutdown. In the emergency shutdown of the reactor, the drive mechanism was powered off and the control rod fell to the bottom. [0003] There are a total of 103 sets of control rod drive mechanisms in the upper assembly. In order for the control rods to fall to the bottom of the reactor within 4s during emergency shutdow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C17/10G21C17/00G21C7/14
CPCG21C7/14G21C17/00G21C17/10Y02E30/30
Inventor 刘天源张范刘明王天湣刘辉周贺贺周立雨吴磊李高超钱明辉
Owner JIANGSU NUCLEAR POWER CORP
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