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A digital control and protection system for nuclear chillers

A chiller, control and protection technology, applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problems of functional dispersion, poor safety and reliability, nuclear-level chillers not considered, weak anti-interference ability, etc., to improve reliability. Security and safety, improve anti-interference ability, save space effect

Active Publication Date: 2021-07-27
CHINA TECHENERGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of the above analysis, the embodiment of the present invention aims to provide a digital control and protection system for nuclear-grade chillers to solve the problems of poor reliability, Low stability, weak anti-interference ability, high hardware cost, etc.

Method used

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  • A digital control and protection system for nuclear chillers
  • A digital control and protection system for nuclear chillers
  • A digital control and protection system for nuclear chillers

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Embodiment Construction

[0050] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the application and together with the embodiments of the present invention are used to explain the principle of the present invention and are not intended to limit the scope of the present invention.

[0051] A specific embodiment of the present invention discloses a digital control and protection system for a nuclear-grade chiller. Such as figure 2As shown, it includes a signal conditioning unit, a signal acquisition unit, and a logic control unit; the input terminal of the signal conditioning unit is used to condition the analog signal and RTD signal output by the nuclear-grade chiller into a standard active signal, and the conditioned signal It is transmitted to the signal acquisition unit; the signal acquisition unit includes an AI board for collecting standard active signals and a DI ...

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Abstract

The invention relates to a digital control and protection system for a nuclear-grade chiller, which belongs to the field of nuclear-grade chiller control, and solves the problems of poor reliability, low stability, and low Weak anti-interference ability and high hardware cost. The system includes a signal conditioning unit, a signal acquisition unit, and a logic control unit. The overall hardware architecture of the system adopts redundant configuration, which improves the stability of the system; different isolation measures are adopted for signal collection and communication, which improves the anti-interference ability of the system.

Description

technical field [0001] The invention relates to the technical field of control of nuclear-grade chillers, in particular to a digital control and protection system for nuclear-grade chillers. Background technique [0002] At present, the nuclear chiller control system mainly adopts programmable logic controller (PLC) and industrial touch screen to realize control and alarm display functions. The controller is installed in the electrical box on the chiller body, and the internal signal acquisition and logic processing of the control system are uniform. Design measures such as isolation, redundancy, functional dispersion, and fail-safety were not considered. [0003] Both PLC and industrial touch screen are NC-level equipment. Using the above method to realize the control and protection of nuclear-level chillers mainly has the following problems: [0004] 1) The software requirements for the control system of nuclear-grade chillers are Class B, and the PLC belongs to NC-level ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B49/00
CPCF25B49/005
Inventor 王晓卫郑伟智林杰孟庆军孙洪涛刘静波林颖杰王任远刘克超张弋
Owner CHINA TECHENERGY