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Waterpower driving mechanism for reactor safety rod

A hydraulic drive, safety rod technology, applied in the direction of reactor, nuclear reaction control, greenhouse gas reduction, etc., can solve inappropriate problems, achieve low cost, good operation reliability, and simple structure

Active Publication Date: 2009-07-29
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, from a security and economical point of view, it is not appropriate to do so

Method used

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  • Waterpower driving mechanism for reactor safety rod
  • Waterpower driving mechanism for reactor safety rod

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Embodiment Construction

[0013] Below in conjunction with accompanying drawing, specific structure, work process of the present invention will be further described.

[0014] figure 1 , figure 2 Schematic diagram of the structure of the safety rod hydraulic drive mechanism provided by the present invention. The hydraulic drive mechanism includes three parts: a hydraulic drive cylinder 6, an outer cylinder 8, and a hydraulic drive circuit arranged outside the reactor pressure vessel. The hydraulic drive cylinder is composed of a piston 11, a connecting rod 14 rigidly connected with a safety rod, and a cylinder liner 10. Composition, the cylinder liner is made up of cylinder liner head 18 and cylinder sleeve 19 two parts, is provided with at least three overflow holes 9 uniformly distributed along the circumference at the terminal point of the upper piston stroke of cylinder liner head; The inner wall of described cylinder liner 19 Non-contact seals are used between the connecting rod 14 and the inner...

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Abstract

A reactor safety hydraulic rod drive mechanism, involving water-cooled reactor safety rod driving device. The hydraulic drive mechanism composed of hydraulic driven cylinder, the cylinder and hydraulic drive circuit components. The hydraulic driven cylinder includes the piston, connection rod, and cylinder thimble. The cylinder walls connected with the rod and piston in non-connect seal method. There are at least three overflow holes along with the circumference in the upper of the cylinder thimble. The top of the cylinder is closed. It is concentric with the cylinder thimble. Hydraulic drive circuit contains water pipes for pumping and drainage. One end of the pumping pipes and drainage pipes is connected to the inner of the reactor pressure vessel, and the other end is connected to the hydraulic driven cylinder. The circulating pump and flow control valve are installed on pumping pipes, while the solenoid valve is installed on the drainage pipes. What the invention demonstrates is only good safety and reliability, but also economic value for its simple structure. Compared with PWR control rod with magnetic, its cost is 1 / 3 to 1 / 5.

Description

technical field [0001] The invention relates to a hydraulic driving mechanism for a safety rod of a reactor, in particular to the structural design of a driving device for a safety rod of a water-cooled reactor, and belongs to the technical field of nuclear reactor equipment. Background technique [0002] The reactor safety rod drive mechanism is an important part related to the operation and safety of the reactor. It is used to drive the reactor safety rod to realize the functions of lifting, holding and dropping the safety rod. Existing reactors all use control rod drive mechanisms (such as rope pulley mechanisms, rack and pinion mechanisms, magnetic force lifting mechanisms, etc.) to double as safety rod drive mechanisms. However, since the safety rods only have three working states: core, holding and falling rods, the driving requirements of the control rod driving mechanism are much simpler, but their reliability requirements are more stringent. Therefore, it is not su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21C7/16G21C9/02
CPCY02E30/39Y02E30/30
Inventor 吴元强阎慧杰吴莘馨
Owner TSINGHUA UNIV
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