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Nuclear power reaction cylinder

A reaction cylinder and nuclear power technology, applied in the field of nuclear reactors, can solve problems affecting structural design, physics, thermal engineering design difficulties, process difficulties, etc.

Inactive Publication Date: 2018-12-04
XIAN LANDARUI NEW ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this hydraulic stepping cylinder is only suitable for setting the transmission cylinder assembly under the condition of the core structure (mainly boiling water reactor and low-temperature heating reactor), and for the control rods of the rod bundle type of the pressurized water reactor, it is limited in that the structure is difficult accomplish
In addition, the hole-to-hole scheme adopted by this hydraulic stepping cylinder requires that the orientation of the control rod wing plate and the orifice remain unchanged, otherwise it will affect the hydraulic characteristics of the cylinder.
There are also certain difficulties in the process of keeping the orientation of the orifice unchanged.
In addition, the entire cylinder body and the core are integrated into a rigid structure, which has very strict requirements on the manufacturing and installation accuracy of the cylinder body and the manufacturing and positioning accuracy of the core component box, which also adds great difficulty to manufacturing and assembly.
At the same time, when the transmission mechanism enters the reactor core, it will also bring certain difficulties to the physical and thermal design of the reactor, thus affecting the structural design of the entire reactor.

Method used

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Embodiment Construction

[0015] The device is arranged at a height of 2.5 meters above the reactor core, and is connected with the control rod absorbing element through the sealing rod [4]. The absorption element is rod bundle type, and the transmission system parameters are as follows:

[0016] step distance 50mm

[0017] Stroke 2500mm

[0018] 50 steps

[0019] Lift weight 100kg

[0020] Maintain a flow rate of 2 to 2.5 cubic meters per hour

[0021] Pump head 90 meters

[0022] The hydraulic stepping cylinder consists of a fixed cylinder [1] and a moving piston [2]. The inner diameter of the fixed cylinder is 68 mm, and the two ends of the hollow piston rod [3] connected with the piston [2] are closed. The upper part of the rod is provided with a water inlet connected with the inner chamber. Below the water inlet, the outer surface is engraved with 50 slots. The groove width is 20 mm, the groove distance is 50 mm, and there are 8 holes with a diameter of 4 mm in the groove, which are evenly ...

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Abstract

The invention discloses a nuclear power reaction cylinder. The reaction cylinder is characterized in that the reaction cylinder consists of a fixing cylinder body and a moving piston. The reaction cylinder has inherent safety characteristics, and can simplify a reactor core structure and improve physical thermal and hydraulic properties, so that a hydraulic stepping cylinder can be easily promotedto apply to light water nuclear power reactors with all types.

Description

technical field [0001] The invention belongs to the field of nuclear reactors, in particular to a paired-hole hydraulic stepping cylinder used for a control rod transmission mechanism of a light water power nuclear reactor. Background technique [0002] It is based on the Chinese patent CN85100042-the paired-hole hydraulic cylinder for reactor control rods. This is a hydrodynamic drive cylinder with jacket movement, which has been successfully used in cryogenic heating reactors. But this hydraulic stepping cylinder is only suitable for setting the transmission cylinder assembly under the condition of the core structure (mainly boiling water reactor and low-temperature heating reactor), and for the control rods of the rod bundle type of the pressurized water reactor, it is limited in that the structure is difficult accomplish. In addition, the hole-to-hole scheme adopted by this hydraulic stepping cylinder requires that the orientation of the control rod wing plate and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C7/16
CPCG21C7/16Y02E30/30
Inventor 刘坤
Owner XIAN LANDARUI NEW ENERGY CO LTD
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