Continuous mobile waterpower drive device of nuclear reactor control rod
A nuclear reactor and hydraulic drive technology, applied in the control of nuclear reactions, reactors, nuclear engineering, etc., can solve the problem that the control rods are not continuous, and achieve the effects of easy operation and programmed control, convenient processing, and good safety and stability
Inactive Publication Date: 2011-06-22
HARBIN ENG UNIV
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Problems solved by technology
Its disadvantage is that the movement of the control rod is stepped rather than continuous; it has high requirements for flow control
Method used
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Embodiment Construction
[0016] Hereinafter, the present invention will be described in more detail with examples in conjunction with the accompanying drawings:
[0017] Combine figure 1 , The specific composition of the hydraulic drive device for the control rod of the continuous mobile nuclear reactor includes the drive cylinder 1, the inner sleeve 2, the sliding groove sleeve 3, the lower end cover 5, the piston 6, the hollow piston rod 7, the servo tube 8, the screw 9 and the stop Channel assembly 10, buffer cavity cover 11 and its power source (motor 17 and water pump 18 (see figure 2 )); Among them, the integrated piston 6 and the hollow piston rod 7 are inserted coaxially with the drive cylinder 1; the inner sleeve 2 inserted in the hollow piston rod 7 is a flange with an end The cylinder body and part of the outer wall is processed into a plane, so that it can not only use the arc surface on the outer wall to slidably fit with the hollow piston rod 7, but also to form a supply of water between t...
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The invention provides a continuously moving-type control rod hydraulic drive device of a nuclear reactor, which comprises a drive cylinder barrel, an internal sleeve, a runner sleeve, a lower end cover, a piston, a hollow piston rod, a servo tube, a leading screw, a shift-stopping assembly and a power source (a motor and a water pump). The control rod hydraulic drive device takes a refrigerant (water) in a pressure container of the nuclear reactor as a working substance, and the refrigerant (water) flows along a flowing channel formed internally therein after being pressurized by a water pump; the motor and the auxiliary moving servo tube of screw transmission are used for changing the width of a changeable choke formed between the end surface of the servo tube and the inner bottom surface of the hollow piston rod so as to change the pressure at two sides of the piston and drag a control rod fixedly connected with the outer end of the hollow piston rod to move. The control rod hydraulic drive device has the advantages that since no electron device required for solenoid drive exists, the requirement on working environment is not high; the continuous movement of the control rod canbe realized; the drive device has simple structure and convenient processing and is easy for operation and programmed control; the limitation change range of the pressure and flow of working water isrelatively wide, and the drive device has good safety and stability.
Description
(1) Technical field [0001] The invention relates to a reactor control rod hydraulic drive device used for controlling nuclear reaction power and starting and stopping nuclear reactors. (2) Background technology [0002] The function of the control rod and its driving device placed inside the nuclear reactor pressure vessel (built-in) or external (external) is to drive the control rod to hold, lift, insert or quickly fall in the core according to the instructions of the control system and the safety protection system. In other words, the control rod and its driving device are responsible for important tasks such as reactor startup, power adjustment, shutdown or rapid shutdown in an accident state, and are important components to ensure the safety and control of the reactor. Common control rod drive methods include mechanical drive, magnetic lifting, motor drive and hydraulic drive. [0003] The control rod drive mechanism of the PWR nuclear power plant generally adopts an external ...
Claims
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IPC IPC(8): G21C7/16
CPCY02E30/39Y02E30/30
Inventor 韩伟实贺克羽韩旭
Owner HARBIN ENG UNIV