Control system of unattended heat exchange station and implementation method of control system

Abstract

The invention discloses a control system of an unattended heat exchange station. The control system comprises a monitoring center. The monitoring center is connected with a wireless communication module through GPRS communication. The wireless communication module is connected with a PLC. The PLC is connected with a touch screen, a frequency converter, a pressure transmitter, an electromagnetic flow meter, a temperature transmitter and a regulation valve. The frequency converter is connected with a circulating pump and a make-up water pump. The control system has the following beneficial effects that analog quantity parameters such as pressure, temperature and flow are collected and processed in real time through the PLC, the PLC control system of the heat exchange station implements automatic control over control objects such as an electric regulation valve of a primary network, a circulation system of a secondary network and a water supplementation system, full-automatic control of aheat exchange station system is achieved, and functions such as data collection, automatic control, parameter storage, real-time communication and failure warning are completed.

Description

technical field [0001] The invention relates to a control system of an unattended heat exchange station and a realization method thereof, belonging to the technical field of electronic equipment. Background technique [0002] The heat exchange station is composed of a heat exchange system composed of water-water or air-water heat exchangers, a circulating water system composed of circulating water pumps, and a water supply system composed of water supply pumps. In the control process, a large number of physical quantities need to be collected, such as pressure, temperature, flow and other analog parameters. The traditional heat exchange station control system has a single function and simple logic. It can only realize simple start-stop control of the heat exchange station. Each heat exchange station needs a person on duty to start and stop the circulating water pump. The lack of water in the pipe network requires manual water replenishment, and the temperature of the seconda...

AI Technical Summary

Problems solved by technology

In the control process, a large number of physical quantities need to be collected, such as pressure, temperature, flow and other analog parameters. The traditional heat exchange station control system has a single function and simple logic. It can only realize simple start-stop control of the heat exchange station. Each heat exchange station needs a person on duty to start and stop the circulating water pump. The lack of water in the pipe network requires manual water replenishment, and the temperature of the secondary pipe network needs to be manually adjusted. This control method has the following problems: 1. The control of the heat exchange station is manual control or Semi-automatic control requires staff on duty at each heat exchange station, resulting in increased labor costs; 2. The design flow and power of the circulation pump of the heat exchange station are designed according to the full load, and the actual power used in the actual use process cannot reach the design power , if there is no intelligent control, it will cause a waste of electricity; 3. The temperature control of the secondary pipe network is realized by the heat input of the primary pipe network. The simple control system can only set a fixed required temperature, but a day The demand temperature during the day and night is different, so the traditional control process cannot realize the dynamic temperature control

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