Refractory anchors and tube shields are essential components in the operation and maintenance of boilers in thermal power plants, each serving a critical role in ensuring the boiler's efficiency and longevity.
Refractory anchors are used to secure the refractory lining within the boiler. The refractory lining is a heat-resistant material that insulates the boiler's interior, protecting the metal structure from extreme temperatures and thermal cycling. Refractory anchors, typically made from high-temperature-resistant alloys, are embedded or welded into the boiler's metal shell before the refractory material is applied. They provide structural support, preventing the refractory lining from cracking, spalling, or detaching due to thermal expansion, mechanical stress, or vibration. This ensures the integrity of the insulation, minimizing heat loss and maintaining the boiler's operational efficiency.
Tube shields, also known as "tube protectors" or "wear shields", are used to protect the boiler tubes from erosion, abrasion, and corrosion caused by the high-velocity flow of flue gases, ash particles, and other abrasive materials. These shields are typically made from durable, heat-resistant materials such as ceramic or alloy steel. They are installed on the surfaces of boiler tubes that are most exposed to wear, such as in the convection pass or near soot blowers. By shielding the tubes, they extend the lifespan of the boiler tubes, reduce maintenance costs, and prevent unplanned downtime due to tube failures.
Together, refractory anchors and tube shields play a vital role in maintaining the structural integrity and operational efficiency of boilers in thermal power plants. Refractory anchors ensure the stability of the refractory lining, while tube shields protect critical components from wear and tear, contributing to the overall reliability and performance of the power generation process.
