Long-life high-temperature-resistant magnetic force improving type reactor control rod drive device

A drive mechanism and high-temperature-resistant technology, which is applied in the field of long-life high-temperature-resistant magnetic lift-type reactor control rod drive mechanisms to achieve the effects of reducing electromagnetic interference, improving safety and reliability, and improving temperature resistance levels

Inactive Publication Date: 2018-03-06
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The rod position detection coil skeleton

Method used

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  • Long-life high-temperature-resistant magnetic force improving type reactor control rod drive device
  • Long-life high-temperature-resistant magnetic force improving type reactor control rod drive device
  • Long-life high-temperature-resistant magnetic force improving type reactor control rod drive device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] as attached figure 2 As shown, the pressure-resistant casing assembly 3 of the present invention is divided into three sections according to its axial direction: it is composed of a suspension ring 7, a stroke sleeve 8 and a sealing casing 13, the sealing casing 13 is an integrated all-nickel-based structure, and the sealing casing 13 and the through No welds between pieces.

Embodiment 2

[0043] Similar to Example 1, as attached figure 2 As shown, threaded connection is adopted between the suspension ring 7 and the travel sleeve 8 . The stroke sleeve 8 and the sealing shell 13 are threadedly connected and welded with an "Ω" sealing ring 14 to realize sealing and anti-loosening. The Ω base material of the stroke sleeve 8 is nickel-based alloy welding ring 15, and the nickel-base alloy welding ring 15 is connected with the stroke sleeve 8 through nickel-base butt welding 16; Composed of two half-rings respectively, the locking band 12 binds the two half-rings of each magnetic conduction ring 9-11 symmetrically in the groove of the outer circle of the sealing shell 13 . The stroke sleeve 8 is an integral blind pipe structure with the upper end blocked.

Embodiment 3

[0045] as attached image 3As shown, the armored coil in the coil assembly of the present invention is composed of an armored winding wire 17 and a bobbin 18 . The coil bobbin 18 is made of metal material, and its structure is a cylindrical structure with outer flanges at both ends. An annular groove is formed between the outer flanges, and the armored winding wire 17 is continuously wound in the annular groove. connector.

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PUM

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Abstract

The invention discloses a long-life high-temperature-resistant magnetic force improving type reactor control rod drive device, which comprises a pressure shell assembly and a rod position detector assembly. The rod position detector assembly comprises a compensating coil, a rod position detecting coil framework, a spacing framework, a primary coil, a secondary coil, an inner barrel and an outer barrel. The primary coil is continuously coiled on an outer wall of the inner barrel; the rod position detecting coil framework and the spacing framework are alternately arranged and connected outside the primary coil in a sleeving way along an axial direction of the inner barrel so as to form a coil framework layer; the compensating coil and the secondary coil are externally arranged on the rod position detector assembly framework so as to be respectively coiled on the rod position detecting coil framework at a time. According to the long-life high-temperature-resistant magnetic force improvingtype reactor control rod drive device provided by the invention, the combined type rod position detector framework is adopted, and the secondary coil is arranged externally so as to be coiled on therod position detecting coil framework at a time without a connector in the middle, so that the probability of the occurrence of the phenomena such as bad contact or open circuit is reduced, and the work reliability of the rod position detector is improved.

Description

technical field [0001] The invention relates to the field of a reactor control rod driving mechanism of a pressurized water reactor nuclear power plant, in particular to a long-life, high-temperature-resistant magnetic lift-type reactor control rod driving mechanism. Background technique [0002] The reactor control rod driving mechanism is the executive mechanism of the reactor control and protection system, which can drive the control rod assembly to move up and down in the core according to the command, keep the control rod assembly at the specified height or drop the rod after power failure, so as to complete the adjustment of reactor reactivity or emergency shutdown function; the control rod driving mechanism completes the reactor start-up, power adjustment, power maintenance, shutdown and safety shutdown under accident conditions by lifting, inserting, maintaining and quickly dropping the control rods. Safety and reliability directly affect the safety and operation of ...

Claims

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Application Information

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IPC IPC(8): G21C7/12G21C9/02
CPCG21C7/12G21C9/02Y02E30/30
Inventor 于天达陈西南罗英李红鹰余志伟杨方亮杨晓晨唐向东杨博刘一泽陈刚李维邓强刘佳晋舒颜胥春燕朱紫豪谢细明张智峰
Owner NUCLEAR POWER INSTITUTE OF CHINA
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