The iron-supplied blast furnace air supply branch pipe is a vital component in the blast furnace furnace front equipment, and is also a weak link in the hot air pipe system. Because the lining damage is easy to cause air leakage problems, affecting the normal production of the blast furnace. The Fluke handheld infrared camera can quickly and accurately detect the damaged position of the air supply branch lining for timely maintenance and equipment safety.

Why should I test the blast furnace supply branch?

The air supply branch pipe is an important part of the blast furnace hot air system. It divides the 1200 °C hot air delivered by the hot air main pipe into dozens of branch pipes and transports them from the bottom of the blast furnace (sometimes called the lower branch pipe) to participate in the blast furnace iron making process. There is insulation material inside the air supply branch pipe, but it is different from the expansion coefficient of the outer casing and the refractory brick material. When the refractory brick is detached, if it is not repaired in time, it will cause the outer casing to burn through, causing a safety accident. If there is crack or falling off in the refractory material, the high-temperature molten iron in the furnace (about 1350 ° C) will leak directly to the water cooling system, the heat preservation system and the furnace wall along the crack or the falling part, which will seriously cause the entire blast furnace to be scrapped. Local thinning will transfer the high temperature of the local high temperature resistant material to the furnace wall through the water cooling system and the heat preservation system. It is easy to find these hidden problems by regularly checking with the thermal imager.

What methods are currently available to detect the air supply branch?

At present, in the ironworks, an infrared thermometer is usually used to detect the falling off of the blast brick of the air supply branch pipe.

What are the problems with using the infrared thermometer to detect the air supply branch?

Due to the high temperature limit, it is necessary to test at least 2 meters away, but according to the light path diagram on the infrared thermometer, the temperature obtained on the display is about the average temperature of the entire air supply branch, but the highest temperature point (ie possible The size of the hidden part is relatively small, and the detection temperature of the infrared thermometer is low, which causes the infrared thermometer to accurately detect the falling off part of the refractory brick, resulting in hidden troubles.

Why can the handheld infrared camera effectively detect the air supply branch?

The hand-held infrared camera detects the temperature distribution of the entire surface of the hot air branch pipe, and there is no possibility of missed detection. At the same time, the handheld infrared camera can detect the hot spots as small as 1 cm in 2 meters, which can effectively cover each. A hidden part.

How to judge whether the air supply branch pipe has refractory brick falling off defects?

The surface temperature of the air supply branch casing of the normal part generally does not exceed 330 °C. If it is in the range of 330 °C to 400 °C, it means that the refractory brick is damaged. If the maximum temperature exceeds 400 °C, it is a serious fault and needs to be in the shortest possible time. Internal maintenance.

On-site case: Detection of air supply branch pipe of No.7 blast furnace in a metallurgical enterprise ironmaking plant

The maximum temperature of the 26th air supply branch pipe is 303 °C, normal

The maximum temperature of the No. 7 air supply branch pipe is 432 °C, and the refractory brick has signs of falling off.

Precautions for blast furnace air supply branch pipe detection using handheld infrared camera

1 It is recommended to select a model with a temperature range up to 600 °C;

2 It is recommended to use the infrared-visible fusion picture-in-picture (PIP) function;

3 The temperature around the blast furnace is high, so be careful.

Maintenance personnel are repairing the blast furnace air supply branch pipe

Dog House

sample is available for plush dog house,plush pet house,wire pet house and etc.

welcome to discuss the details,we will give the professional suggestion and sent the sample for check the quality.

Dongyang Yadi Pet Product Co , Ltd was founded in 2006 and covers an area of 6500 square meters . We are located in Zhejiang , the famous manufacturing city in China.We are specialized in developing and manufacturing many kinds of pet products. Our featured products are pet collar ,PET Leash ,pet harness, pet clothes,pet bandana,small pet products,ect.

Our company also o ffer all kinds of OEM/ODM services.And enjoy a good reputation among clients,we can provide you with the highest quality products and services.

In order to take up the market , our company focuses on introducing and cultivating talents as well as constantly developing new products.We always take the principle of [credibility , concentrate on work , quality supreme , innovation and development", with a heart of thanks giving to return customers and society.

Welcome to visit our company!

Dog House,Plush Dog House,Plush Pet House,Wire Pet House

Dongyang Yadi Pet Product Co.,Ltd , https://www.yadipet.com