An automatic online cleaning system and method for an intelligent circulating cooling water heat exchanger

Abstract

The invention provides an automatic online cleaning system of an intelligent circulating cooling water heat exchanger. The automatic online cleaning system comprises the heat exchanger, a centrifugal pump and a water storage tank which are connected in sequence through a pipeline to form a closed loop, a dirt discharge tank is arranged in the mode of being connected with the two ends of the water storage tank in parallel, a branch pipe is arranged on a pipe at the water inlet end of the heat exchanger, and connected with an air compressor, the dirt discharge tank is connected to an automatic ice machine, and a filter device is arranged in the dirt discharge tank. Temperature sensors, flowmeters and conductivity meters are arranged on the pipe at the water inlet end of the heat exchanger and a pipe at the water outlet end of the heat exchanger respectively, and all connected with a data collecting system, and the data collecting system is connected with a computer to transmit data signals of temperature transmitters, the flowmeters and the conductivity meters to the computer to be processed. The computer is connected with a control system, and the controls system is connected with the automatic ice machine and controls the automatic ice machine to be turned on and off. The automatic online cleaning system modified based on a traditional cooling system and a three-phase mixed liquid cleaning method matched with the system are utilized, and efficient and automatic online cleaning of the heat exchanger is achieved.

Description

technical field [0001] The invention relates to an automatic online cleaning system and method for an intelligent circulating cooling water heat exchanger. Background technique [0002] Heat exchanger is one of the widely used equipment in chemical industry and power field. Its function is to transfer heat from hot fluid to cold fluid. Circulating cooling water heat exchanger is an indispensable equipment in the cooling system of modern industrial production lines. [0003] Heat exchanger fouling is a common phenomenon, but also a problem that needs to be solved urgently. In the design stage, due to the fact that the dirt resistance value lower than the actual dirt is selected during the design, after the heat exchanger has been in operation for a period of time, the heat exchange is insufficient, and a new heat exchanger needs to be added for parallel operation, which increases the investment. Therefore, the heat exchanger Due to fouling, frequent cleaning is required, and...

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Problems solved by technology

[0006] The present invention proposes an automatic online cleaning system and method for an intelligent circulating cooling water heat exchanger, using the automatic online cleaning system transformed from a traditional cooling system and a matching three-phase cleaning method to realize the cleaning of the heat exchanger Efficient and automatic online cleaning, that is, reducing the input cost and operating cost of the system, and solving the problem of regular shutdown of production caused by offline cleaning, which leads to significant increase in maintenance costs and production shutdown losses. However, the existing online cleaning system is complex and the cleaning effect is not good. The problem

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