Blast furnace air supply device straight blowing pipe with temperature alarming and automatic treatment device

Abstract

The invention discloses a blast furnace air supply device straight blowing pipe with a temperature alarming and automatic treatment device. Temperature measuring devices are arranged at the air outletend of a conical pipe and connected with a center control chamber and the automatic treatment device through connecting wires, real-time temperature information is fed back to the center control chamber and the automatic treatment device, the center control chamber dynamically displays the real-time temperature information, the automatic treatment device receives the temperature information fed back by the temperature measuring devices, and when the highest temperature of the multiple temperature measuring devices distributed on the straight blowing pipe is higher than the early warning temperature, a system air pipeline is controlled to blow cool air to the end portion of the straight blowing pipe, and the function of reducing the surface temperature of the straight blowing pipe is achieved. By means of the blast furnace air supply device straight blowing pipe, the surface temperature of the straight blowing pipe can be measured in real time, it is guaranteed that during blast furnace running, the work conditions of the straight blowing pipe can be monitored in real time, and the problems that the manual temperature measuring efficiency is low, and safety is not high are solved;and through the arrangement of the automatic treatment device, when the surface temperature of the straight blowing pipe is too high, the system automatically starts emergent treatment for blowing ofcool air to the straight blowing pipe, and accordingly the situation that the straight blowing pipe is burnt through due to the too high temperature is avoided.

Description

technical field [0001] The invention relates to a straight blow pipe of an iron-making blast furnace air supply device, which is a direct blow pipe with a temperature alarm and automatic disposal device. Background technique [0002] In the ironmaking industry, hot air is the main heat source for blast furnace ironmaking. The temperature of the hot air is generally 1200-1350°C. The function of the blast furnace air supply device is to transport the hot air into the blast furnace through the tuyeres. Blast furnace air supply devices include goosenecks, expansion joints, elbows, straight blow pipes, upper and lower tension devices, peep hole devices, etc., and straight blow pipes are key components connected to blast furnace tuyeres. Working under the condition of hot air flushing, there are high-temperature refractory materials inside the direct blowing pipe. Since the thinnest wall thickness of the refractory material at the front of the direct blowing pipe is only about 30m...

AI Technical Summary

Problems solved by technology

Blast furnace air supply devices include goosenecks, expansion joints, elbows, straight blow pipes, upper and lower tension devices, peep hole devices, etc., and straight blow pipes are key components connected to blast furnace tuyeres. Working under the condition of hot air flushing, there are high-temperature refractory materials inside the direct blowing pipe. Since the thinnest wall thickness of the refractory material at the front of the direct blowing pipe is only about 30mm, such thin refractory materials are prone to overheating of the direct blowing pipe under the blowing of high-temperature hot air. Problems such as redness, if not treated in a timely and effective manner, can directly lead to burn-through of the direct blowing pipe, resulting in an emergency shutdown of the blast furnace, and an emergency shutdown of the blast furnace will cause the slag and iron in the furnace to flow back into the air supply device, which may be serious. Filling the slag into the hot air surrounding pipes, or even burning other equipment, causing serious economic losses and even casualties, which poses a major safety hazard. At this stage, only manual daily spot inspections can be used to control this problem

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