Unlock instant, AI-driven research and patent intelligence for your innovation.

System for operating control mechanisms of rods in a nuclear reactor

A technology for control mechanism and nuclear reactor, which is applied in the control, control system, reactor and other directions of nuclear reaction, and can solve the problems of reactor aging, high operation loss, and reactor aging.

Inactive Publication Date: 2008-06-25
DATA SYST & SOLUTIONS
View PDF1 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0026] In fact, the maintenance and troubleshooting of current equipment is complex
In the event of a failure, the change in neutron flux caused by the fall of the rod cluster automatically leads to an emergency shutdown of the entire reactor in a very short time (1s), which ages the reactor
Furthermore, this leads to more frequent shutdowns, the older the reactor, leading to relatively high operating losses

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • System for operating control mechanisms of rods in a nuclear reactor
  • System for operating control mechanisms of rods in a nuclear reactor
  • System for operating control mechanisms of rods in a nuclear reactor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] As shown in Fig. 7, the control system according to the invention comprises a movable power module 14 for each coil. Each power module 14 is connected in series with the corresponding coil 2 and comprises a converter 10 formed, as before, of thyristors with three phase angles controlled. Thus in FIG. 7, a control box designed to control a subgroup of 4 control rod clusters includes 12 unique power supply modules 14 (only two are shown for each type of coil), which are respectively connected to the subgroups of 12 Coils (4 fixed clamp coils 2 GF , 4 movable clamp coils 2 GM and 4 raised coils 2 BM )Associated.

[0040] As shown in FIG. 8 , each power module 14 includes: a converter 10 and a corresponding regulating circuit 15 . The latter is connected to a current sensor 16a and supplies the converter 10 with a signal S8 suitable for the phase angle control of the converter thyristors, depending on the setpoint current value associated with this coil and the current ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The system has a removable and independent power module (14) series-connected with an electromagnetic coil for providing power to electromagnetic coils (2GF, 2GM, 2BM). A rectifying circuit (10) is connected between a three-phase current source and the coil. The circuit has three phase controlled thyristors to control a phase angle by a regulating circuit with respect to set point current values associated with the coil. The power module comprises current sensors i.e. magnetic resistive sensors, to measure the circulating current in the corresponding coil.

Description

technical field [0001] The present invention relates to a rod control mechanism control system for a nuclear reactor, each mechanism comprising 3 working coils powered from a 3-phase current source. Background technique [0002] In a nuclear reactor, control rods designed to be inserted into or withdrawn from the reactor core, specifically to control power to the core, are grouped in control rod clusters. Each cluster of control rods is connected to a drive rod whose movement is controlled by a control mechanism. In the pressurized water reactors (PWR) currently in operation in the United States and the 900MW, 1300MW and 1450MW pressurized water reactors currently in use in France, the movement of the driving rods connected to the shutdown and regulating rod clusters is controlled by a force called a clamp The latch arm mechanism of the gripper is performed discontinuously. Control is generally performed in subgroups of 4-stick clusters. [0003] Control of these mechanis...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G21C7/36
CPCG21Y2004/30G21C7/36G21Y2002/304H02P25/06G21C7/14Y02E30/39G21Y2002/402Y02E30/30G21C7/00G21C7/12
Inventor 马克·波伊洛特丹尼斯·罗亚内斯保罗·奥尔莫斯菲利普·曼迪尔
Owner DATA SYST & SOLUTIONS