In the fields of power, chemical, metallurgy and other industries, high-temperature boilers are the core equipment, and their operational stability directly affects production safety and efficiency. As a key parameter for boiler operation, temperature needs to be monitored in real-time through high-precision and highly reliable temperature measuring devices.WRNKArmored thermocouples have become a solution for temperature measurement in high-temperature boilers due to their structural design and performance.

1、 High temperature tolerance: straight faceextremeWorking conditions“hardcore strength”

WRNKArmored thermocouples use stainless steel or nickel based alloys as the armor shell, and are filled with high-purity magnesium oxide inside（MgO）Insulation layer, forming“Metal sheath+insulating medium+thermocouple wire”A three-layer composite structure. This design makes it tolerable-200℃to1600℃ofextremeTemperature range, especially in high-temperature areas such as boiler furnaces, superheaters, and reheaters (usually up to800℃-1200℃）Can work stably for a long time. For example, in a certain supercritical boiler project,WRNKArmored thermocouple operates continuously36There has been no thermoelectric drift for months, and the temperature measurement accuracy has always been maintained at±0.2%Within, it far exceeds the lifespan and stability of traditional thermocouples.

2、 Quick Response: Capturing Dynamic Temperature“Sensitive antennae”

During boiler operation, fuel fluctuations and load changes can cause rapid temperature fluctuations.WRNKArmored thermocouples optimize the diameter of thermocouple wires (such asΦ2-Φ8mmFine diameter design is matched with thermal expansion of the armor layer to adjust the thermal response time（T0.5）Shorten to2.3Within seconds. In the renovation of a blast furnace gas boiler in a certain steel plant, the use ofWRNKDelay in monitoring burner temperature fluctuations after thermocouple5Seconds down1.8In seconds, it effectively avoids the problem of insufficient combustion caused by temperature lag, saving over a million yuan in fuel costs annually.

3、 Anti interference and durability: in harsh environments“Almighty Warrior”

There are complex environments such as high-pressure steam, corrosive gases, and mechanical vibrations inside the boiler.WRNKThe metal sheath of the armored thermocouple can withstand40BarpressureIP67The protection level can resist the invasion of dust and water vapor, while the magnesium oxide insulation layer is1200℃Still maintain below1000MΩ·mThe above insulation resistance effectively prevents signal interference. In a synthetic ammonia plant of a chemical enterprise,WRNKThermocouples are10MPaContinuous operation under pressure, sulfur-containing corrosive gas environment5Not yet expired, with an extended lifespan compared to traditional assembled thermocouples3Twice.

4、 Flexible installation: in narrow spaces“Transformers”

The internal pipelines of the boiler are dense and the space is narrow, making it difficult to install traditional thermocouples.WRNKArmored thermocouple supports minimum5The bending radius of double the diameter can easily fit curved surfaces such as boiler walls and superheater coils. For example, in a boiler wall temperature measurement project at a certain power plantΦ4.8mmArmored thermocouples are fixed with heat transfer plates and clamps to achieve a tight fit with the furnace wall, and the temperature measurement error is reduced±5℃drop to±1.5℃This provides critical data support for the safe operation of boilers.

5、 Industry Applications: From Electricity to Metallurgy“all-rounder”

power industryIn supercritical and ultra supercritical boilers,WRNKThermocouples are used to monitor the wall temperature of superheaters and reheaters to prevent overheating and tube bursting.

Metallurgical industry: In blast furnaces, converters, and heating furnaces,WRNKThermocouples can measure the temperature of molten steel and iron in real time, guiding the optimization of smelting processes.

Chemical industry: In equipment such as reaction vessels and cracking furnaces,WRNKThe corrosion resistance of thermocouples can ensure long-term stable temperature measurement and improve production safety.

Conclusion

WRNKArmored thermocouples have become a leading force in the field of high-temperature boiler temperature measurement due to their core advantages of high temperature tolerance, fast response, strong anti-interference, and flexible installation“standard configuration”equipment With the advancement of industry4.0With the advancement of intelligent manufacturing,WRNKThermocouples are undergoing digital upgrades (such as integration)HARTFurther expand the application boundaries of protocols and IoT modules, providing more intelligent and reliable solutions for industrial temperature measurement.