Bus-based seawater desalination control system

Abstract

The invention discloses a bus-based seawater desalination control system. In the prior art, the heat collection efficiency is low, the water production rate is low, and the system is completely in a spontaneous extensive state, so that the requirements for practical application can not be met. The seawater desalination control system comprises a light gathering and heat collection part, a heat accumulation and heat exchange part, a seawater desalination part, an analog input module, a remote I / O (input / output) module, a PROFIBUS bus, a frequency converter, a PLC (programmable logic controller), and an upper computer, wherein a flow transmitter, a pressure transmitter, a temperature transmitter and a liquid level transmitter acquires signals and input the signals into the analog input module; the analog input module is connected with the remote I / O module; the remote I / O module is connected with the PLC through the bus; the PLC is connected with the upper computer through RS485; and the PLC simultaneously controls the frequency converter via the bus through the remote I / O module. The invention is simple in structure, stable in system, convenient to maintain, mature in technology, favorable in control effect and low in cost.

Description

technical field [0001] The invention belongs to the field of new energy seawater desalination, and in particular relates to a bus-based seawater desalination control system. Background technique [0002] With the increase of the world's population and the increase of people's dependence on energy, energy issues and fresh water resources have become a major strategic issue in the world. For China, these two problems are even more serious. In recent years, affected by rising oil prices and global climate change, the development and utilization of renewable energy has drawn increasing attention from the international community. Among the many renewable resources, the most ideal is solar energy, which has the advantage of being inexhaustible compared with other renewable resources. The application fields of solar energy are very extensive, but ultimately it can be attributed to two aspects of solar heat utilization and light utilization. For the increasingly scarce fresh wate...

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Problems solved by technology

[0006] In view of the backwardness of the original solar desalination technology, the low efficiency of solar energy collection and seawater desalination, and the inability to meet the needs of large-scale seawater desalination, the present invention proposes a bus-based seawater desalination control system

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