Wiping-free observation window device for closed heating furnace

Abstract

The invention discloses a wiping-free observation window device for a closed heating furnace. The device comprises a protector inner ring, a protector outer ring and a lens, wherein the lens is arranged at one end of the protector outer ring, the other end of the protector outer ring is connected to the protector inner ring, a connecting end cavity and an annular nozzle are arranged at the connecting position of the other end of the protector outer ring and the protector inner ring, the annular nozzle is communicated with the connecting end cavity through an annular cavity, the connecting end cavity is communicated with a gas pipe connector through a gas input channel, and the gas pipe connector is arranged on the outer side wall of the protector outer ring. The connecting end cavity serves as a containing cavity of protective gas, uniform airflow is provided for the annular nozzle to form an airflow protecting wall, the purposes of protecting the lens at the inner side of the furnace from being adhered with impurities and keeping the mirror surface clean are achieved, and the airflow protecting wall is transparent and does not affect observation from the outside of the furnace to the inside of the furnace. The structure is simple, and the maintenance period of lens cleaning is prolonged; and the observation effect on the condition in the furnace is good, expensive camera equipment does not need to be replaced, the labor intensity of equipment maintenance personnel is greatly reduced, and the working efficiency and the working quality are improved.

Description

technical field [0001] The invention relates to a heating furnace, in particular to a wipe-free observation window device for a closed heating furnace. Background technique [0002] With the development of science and technology and the fierce competition in the steel market, the cold-rolled galvanized production line is paying more and more attention to the control of the production process while the product quality requirements are constantly improving. All cold-rolled galvanizing plants have put forward the requirements of ensuring the functional accuracy of equipment, ensuring the cleanliness of steel passages, and optimizing and controllable equipment when continuously improving work efficiency, in order to take the lead in the competition. [0003] As for the situation inside the closed heating furnace, only a clear camera can be used to observe the operation status of the strip steel and equipment in the furnace. If the lens for observing the situation in the furnace ...

AI Technical Summary

Problems solved by technology

The protection effect of the above measures is not good. Therefore, people have designed an isolation device for wiping the lens during production. It is necessary to first clamp the steel clamp installed on the inside of the lens to ensure that the lens is isolated from the high-temperature gas in the furnace, and then wait for the lens to cool down. When there is no harm to people, remove the bolts and lens glands used to fix the lens, and remove the lens to wipe it. However, it is very difficult to disassemble. After cleaning, install it in the reverse order. It takes about 3 hours. Even so, the lens cleanliness can only be last 3 days

Repeated maintenance work consumes a lot of manpower, and the condition of the furnace is invisible during the maintenance and wiping period. Because the furnace is under positive pressure and high-temperature gas, there is a great hidden danger to the safety of maintenance personnel.

[0005] Therefore, the observation moving device of the prior art has low working efficiency and high cost, which are difficult problems to solve; in order to reduce investment and achieve the purpose of preventing or reducing pollution on the inner side of the observation lens furnace, it is necessary to modify the observation window in the furnace

Images