The air preheater achieves the preheating effect by transferring the heat in the flue gas to the air entering the boiler, thereby improving the thermal efficiency of the boiler. However, the internal environment of the air preheater is complex and harsh, and the temperature distribution is uneven. Traditional temperature measurement methods often cannot accurately reflect its internal temperature state. Therefore, the infrared array probe HSDS-20/T, as a high-performance non-contact temperature sensor, is widely used in the temperature monitoring of air preheaters in power plant boilers.

1. Working principle of infrared array probe HSDS-20/T

The infrared array probe HSDS-20/T is a temperature sensor based on the principle of infrared radiation. It uses an infrared focal plane array detector to convert the received infrared radiation into an electrical signal, and then obtains temperature data through signal processing. Specifically, a large number of photosensitive elements are arranged on the focal plane of the infrared focal plane array detector. When infrared radiation irradiates these photosensitive elements, electrons are excited to form electrical signals. These electrical signals are processed by integrating, amplifying, sampling and holding, and then the charge is transferred to the readout device in a certain order, and finally the temperature data is output.

2. Application of infrared array probe HSDS-20/T in air preheater of power plant boiler

Wide fan angle measurement range: The infrared array probe HSDS-20/T has a wide measurement fan angle, which means it can cover a larger measurement range in a smaller space. In the air preheater of power plant boiler, due to the complex structure and limited space, traditional temperature sensors are often difficult to fully cover. The infrared array probe can easily meet this challenge and provide comprehensive and accurate temperature monitoring data.

Non-contact measurement: The infrared array probe HSDS-20/T adopts a non-contact measurement method without direct contact with the object being measured. This feature gives it a significant advantage in measuring the internal temperature of the air preheater with high temperature, high pressure and strong corrosiveness. At the same time, non-contact measurement can also avoid the risk of damage to the sensor due to contact with high-temperature objects.

High reliability: The converter of the infrared array probe adopts a dual CPU redundant structure, which greatly improves the reliability of the sensor. When one of the CPUs fails, the other CPU can immediately take over the work to ensure the continuous operation of the sensor. This design enables the infrared array probe to maintain stable and accurate measurement performance in harsh environments.

3. Process of measuring the internal temperature of the air preheater by the infrared array probe HSDS-20/T

The focal plane array detector of the infrared array probe HSDS-20/T receives infrared radiation from inside the air preheater. These infrared radiations contain the temperature information of each point inside the air preheater. The received infrared radiation is converted into an electrical signal. After these electrical signals are processed by integration amplification, sampling and holding, they form temperature-related data. The processed temperature data is output to the monitoring system through communication protocols such as the Modbus bus. The monitoring system further processes and analyzes the received data to form an intuitive temperature distribution diagram or temperature curve diagram, etc.

The infrared array probe HSDS-20/T can not only provide comprehensive and accurate temperature monitoring data, but also detect and handle abnormal conditions in a timely manner, providing a strong guarantee for the safe and stable operation of the boiler system of the power plant.

When looking for high-quality, reliable probes for boilers, YOYIK is undoubtedly a choice worth considering. The company specializes in providing a variety of power equipment including power plant accessories, and has won wide acclaim for its high-quality products and services. For more information or inquiries, please contact the customer service below:

E-mail: sales@yoyik.com
Tel: +86-838-2226655
Whatsapp: +86-13618105229