Hot standby service redundant control method and system for container water chilling unit

A chiller, dual-machine hot-standby technology, applied in general control systems, control/regulation systems, instruments, etc., can solve the problems of high requirements and high costs for controllers and the entire network equipment, and achieves overcoming high-cost shortages and high reliability. performance, cost reduction

Active Publication Date: 2015-07-01
GUANGDONG SHENLING ENVIRONMENT SYST CO LTD
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Problems solved by technology

[0004] The purpose of the present invention is to provide a dual-machine hot standby redundant control method for container chillers and and The system is designed to solve the problem of high cost caused by the relatively high requirements on the controller and the entire network equipment in the prior art when realizing dual-machine hot standby redundancy

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  • Hot standby service redundant control method and system for container water chilling unit
  • Hot standby service redundant control method and system for container water chilling unit

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Embodiment Construction

[0024] In order to make the object, technical solution and advantages of the present invention more clear and definite, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0025] see figure 1 , the purpose of the present invention is to design a dual-machine hot standby redundant control system for container chillers, which includes four air-cooled chillers, four sets of control systems and a ring communication network. Among the four sets of control systems, two sets are fixed as the main controller and the standby main controller. The control function of the chiller unit 6; the third controller 3 and the fourth controller 4 are responsible for the control functions of the third air-cooled chiller unit 7 and the fourth air-cooled chiller unit 8 respectively. The master controller 1 , backup master controller 2 , third controller 3 and fourth controller 4 are connected to form a ring network on the netwo...

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Abstract

The invention discloses a hot standby service redundant control method and system for a container water chilling unit. The system comprises a main controller and a standby main controller for uniformly coordinating and controlling control systems corresponding to four air-cooled chiller units, wherein the main controller and the standby controller also respectively have control functions on a first air-cooled chiller unit and a second air-cooled chiller unit; a third controller and a fourth controller in the four sets of the control systems respectively have control functions of a third air-cooled chiller unit and a fourth air-cooled chiller units; and when the main controller is offline, or a water inlet or water outlet temperature sensor connected with the main controller is failed, the standby main controller replaces the main controller to control. Due to the adoption of the invention, the undisturbed switching between the main controller and the standby main controller can be realized, the stable operation of the whole system is ensured, and the high reliability of the whole network system is also ensured, so that the defect of high cost of the prior art is overcome.

Description

technical field [0001] The present invention relates to the field of industrial control, in particular to a dual-machine hot-standby redundant control method and system for container chillers, and a network disturbance-free switching control method for places that need to use dual-host controllers to achieve high reliability . Background technique [0002] At present, the commonly used method to achieve high reliability in network communication is dual-machine hot standby redundancy. The current market has very high requirements for controllers that realize dual-machine hot standby redundancy. In the field of industrial control, it is only equivalent to Siemens S7300 series and The above PLC can realize the dual-machine hot standby redundancy function. Since this dual-machine hot standby redundant system has high requirements on the controller, and the control equipment in the entire network must also match the hot standby redundant control system, the real redundancy of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B9/03
Inventor 邱育群原志锋蔡乐坤林创辉李敏华黄国斌
Owner GUANGDONG SHENLING ENVIRONMENT SYST CO LTD
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