The Tube Screen Expansion Measuring Endoscope

The tube screen expansion measuring endoscope is an advanced device for measuring the expansion of heating surface tubes in thermal power boiler. It overcomes the lack of measurement tools and greatly improves detection speed while ensuring accuracy. It can measure closely arranged heating surface tube expansion data and is easy to operate. This enables quick and accurate anti-wear and explosion-proof inspections, including large area appearance inspection and swelling measurement. Additionally, it allows for synchronous saving of appearance videos and swelling data, facilitating later verification.

1. Video detection

The front-end is equipped with high-definition image sensors, high-brightness LED lighting, a real-time high-definition camera that enables the detection of coking, corrosion, damage and large cracks on the outer surface of the tube wall, and a detection data storage feature that facilitates later verification. Images are transmitted to mobile phones in real-time via WIFI.

2. pipeline creep expansion detection.

Equipped with high-precision electronic caliper, preadjust the diameter of the pipe, accurately and quickly detect the outside diameter of the pipe through the spring expansion, and alarm the expansion of the pipe, and send the data to the mobile phone through Bluetooth display.

3. Telescopic rod

The telescopic rod has a 5m expansion capacity and a rechargeable battery.

4.Main performance parameters

Measurement accuracy: 0.01mm

Measuring pipe diameter range: 0-Ø80mm

Image: 1080P, 2K, 4K; 150 degree wide Angle lens

Machine thickness: 40mm

Expansion length: 3 m - 5 m optional.

Working time: Built-in 3000mAH lithium battery, working time is more than 5 hours.

Display storage: diameter, image display on the same screen, support data one-click saving.

The application of The tube screen expansion measuring endoscope

The current method for inspecting the anti-wear and explosion-proof properties of boiler heating surface pipes relies mainly on visual inspection, manual touch, and simple measuring tools. However, due to poor inspection environments, large tasks, regional danger factors, the accuracy, authenticity and comprehensiveness of inspections cannot be fully verified. 

By using a tube screen expansion measuring endoscope to store real-time detection data for each tube certified during the inspection process that can later be checked provides a strong reference for maintenance. 

Additionally, due to complex furnace structures and harsh environments with high altitude risks in inaccessible areas where many parts are missing from personnel access; telescopic tube screen expansion measuring endoscopes can complete comprehensive inspections while saving time and costs associated with drawing the tube screens. 

High temperature superheaters/ reheaters as well as low-temperature superheaters/reheaters/economizers have tight layouts with small spacing between tubes making it difficult for personnel to enter manually detect only three outer tubes leaving many undetected or requiring manual opening before entering testing resulting in low efficiency at high cost. An endoscope designed specifically for measuring thicknesses of tube screens can quickly detect thicknesses/appearances/defects when spacing is greater than 25mm.

     Conclusion

    The telescopic tube screen expansion measuring endoscope effectively resolves the issue of inaccessible areas for low temperature reheaters, low temperature superheaters, and economizers, thereby reducing the occurrence of tube explosions in these regions. This innovative technology enables one person to accomplish the workload equivalent to that of three individuals, resulting in a 75% reduction in labor requirements. Consequently, it significantly minimizes costs and construction timeframes. Moreover, this advancement represents a substantial breakthrough in anti-wear and explosion-proof inspection techniques while providing robust assurance for boiler safety operations.