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Network system of helium low-temperature control system

A control system, low temperature technology, applied in the field of network systems

Active Publication Date: 2021-01-15
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Abstract
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  • Application Information

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Problems solved by technology

In addition, the control system of a large-scale helium cryogenic plant must consider equipment safety, personal safety, occupational health and other issues in different regions, and be compatible with other external control systems

Method used

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  • Network system of helium low-temperature control system

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Embodiment Construction

[0029] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0030] The network structure of a helium cryogenic control system provided by the present invention, such as figure 1 As shown, it includes the top monitoring layer, field control layer, and communication network layer.

[0031] The top-level monitoring layer includes: the top-level control system responsible for low-temperature process operation, the top-level interlock system for equipment protection, and the top-level safety system for occupational health.

[0032] The on-site control layer includes the following: multiple low-temperature on-site sub-control systems divided by different areas or functions. The low-temperature on-site sub-control system includes the refrigerator control system for obtaining low-temperature working fluid, the low-temperature cooling control system for Low temperature auxiliary control system for peripheral equipment. ...

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Abstract

The invention discloses a network system of a helium low-temperature control system, and relates to the technical field of low-temperature engineering. A low-temperature top-layer monitoring system adopts an open management system architecture, a low-temperature field system adopts a universal industrial controller, and a low-temperature communication network adopts a mature industrial communication network; and process control, interlocking control, safety control and the like are divided according to the characteristics of the field sub-control system. According to the invention, a risk prevention and control strategy is formulated by combining the functional characteristics and the requirement levels of the helium low-temperature system, a special communication network is divided, specific tasks are dispersed, centralized hierarchical management is realized, and the operation requirements of a large complex helium low-temperature factory-level low-temperature control system can be met. The network structure of the helium low-temperature control system provided by the invention has universality and is suitable for an industrial process control system.

Description

technical field [0001] The invention relates to the technical field of cryogenic engineering, in particular to a network system of a helium cryogenic control system. Background technique [0002] Helium is the most difficult to liquefy gas in nature, with an extremely low critical temperature of 5.2K and a boiling point of 4.2K at standard atmospheric pressure. Helium has extremely stable chemical properties, has the advantages of high specific heat, high thermal conductivity, and low density, and is an excellent low-temperature refrigerant. [0003] With the rapid development of cryogenic and superconducting technologies, helium cryogenic systems have been widely used in high-energy physics, energy security, strategic resources, and basic scientific research. to tens of kilowatts. With the vigorous development of domestic science and technology, the demand for large-scale helium cryogenic systems is more urgent, and its stability directly affects the safe operation of the...

Claims

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Application Information

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IPC IPC(8): G05B19/418G08C17/02
CPCG05B19/4185G08C17/02G05B2219/33139Y02P90/02
Inventor 陆小飞张启勇周芷伟胡良兵付豹
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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