In the metallurgical industry, load cells (hereinafter referred to as sensors) are often affected by high temperatures from two aspects, one is the high temperature directly transmitted through the support frame, and the other is the high temperature transmitted by radiation in a high temperature environment. The superposition of two high temperatures, coupled with the high-humidity environment caused by factors such as smelting and cooling operations, makes sensors and sensor cables prone to failure and damage. The weighing signal output by a damaged sensor will be seriously inaccurate or invalid, causing the smelting operation to be unable to operate accurately, affecting product quality, and even directly causing the scrapping of the product, causing losses to the company.

Today, when circular economy is advocated, weighing technology in high-temperature environments has attracted more and more attention. Commonly used resistance strain type high-temperature sensors require the use of high-temperature compensation strain gauges, high-temperature-resistant patch glue, high-temperature-resistant solder, potting glue, high-temperature-resistant cables and other materials. They are costly, have poor interchangeability and are suitable for a small high-temperature range. Ensuring that sensors work reliably, accurately, stably, with low cost and good interchangeability in high-temperature, high-humidity and harsh environments is currently a problem encountered by the metallurgical industry.

Basic design plan: an intelligent cooling method that combines cooling protection covers, airflow distributors, temperature sensors, cable cooling ducts and cooling air.

The temperature sensor detects the temperature of the environment where the sensor and cable are located, transmits the detected temperature information to the PLC, and compares it with the set value. The PLC outputs information to control the size of the cooling gas output to achieve closed-loop intelligent control.

The cooling gas is transported to the cooling protective cover through pipelines. After the cooling gas enters the cooling protective cover, it is first evenly distributed by the air flow distributor and fully conducts heat exchange with the high temperature in the protective cover and cable cooling tube.
replacement to maximize cooling efficiency.
The sensor cooling intelligent protection device can promptly dissipate heat, cool and effectively protect sensors and cables in harsh environments with high temperatures, high humidity, and ensure that sensors and cables can operate normally at suitable temperatures operation, thereby ensuring reliable, accurate and stable operation of the weighing control system.