Scaling and pitting corrosion monitoring device for heat exchanger of heat supply network system and using method of scaling and pitting corrosion monitoring device

Abstract

The invention discloses a scaling and pitting corrosion monitoring device for a heat exchanger of a heat supply network system and a using method of the scaling and pitting corrosion monitoring device. The scaling and pitting corrosion monitoring device comprises a cold water chamber and a hot water chamber, and the hot water chamber and the cold water chamber are separated through a stainless steel heat exchange plate and fixed into an integrated structure; the cold water chamber is provided with a cold water inlet and a cold water outlet; the secondary network water inlet pipeline is communicated with the cold water inlet, and the cold water outlet is communicated with the secondary network water return pipeline; the hot water chamber is provided with a hot water outlet and a hot water inlet; the primary network water inlet pipeline is communicated with the hot water inlet, and the hot water outlet is communicated with the primary network water return pipeline; the direction of water flowing through the hot water chamber is opposite to that of water flowing through the cold water chamber; a laser emitting head is installed at the bottom of the cold water chamber and movably arranged on the outer surface of the cold water chamber. The device is installed on a heat supply network heat exchanger bypass, the operation water quality condition of the heat supply network heat exchanger can be more truly reduced, and the pitting corrosion scaling condition of the heat supply network heat exchanger can be judged without disassembling the heat supply network heat exchanger.

Description

technical field [0001] The invention belongs to the field of monitoring of a heating pipe network system, and particularly relates to a monitoring device for scaling and pitting corrosion of a heat exchanger of a heating network system and a method for using the same. Background technique [0002] The plate heat exchanger is an important component of the heating pipe network. The heat exchange plate is usually made of 304 or 316L stainless steel. The pitting corrosion and scaling of the heat exchange plate are the two major problems faced by the heat network heat exchanger. The fouling of the heat exchange plate not only reduces the heat exchange efficiency of the plate heat exchanger, but also causes the corrosion problem under the heat exchange plate scale, which aggravates the risk of failure of the heat exchange plate. After the pitting and perforation of the heat exchange plate, the pressure difference of the heat exchanger will be unstable, and even the entire heat exc...

AI Technical Summary

Problems solved by technology

When the pressure difference, temperature difference and other parameters of the heat exchanger change, the heat exchange plate often has obvious fouling problems, and it is impossible to give early warning and prompts in the early stage of fouling

Corrosion monitoring devices currently used in industrial systems usually use electrochemical linear polarization methods, resistance probes, inductance probes, and electric field matrix technology (FSM) to only monitor the uniform corrosion of materials, and cannot detect local corrosion such as pitting corrosion.

In summary, there is currently no device and method for monitoring the fouling and pitting of the heat exchanger in the heating network system on the market

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