Method for rapidly determining specific leakage points of blast furnace cooling walls online

Abstract

The invention relates to a method for rapidly determining specific leakage points of blast furnace cooling walls online. The method comprises the following steps that 1, a column where the damaged cooling walls are located is determined by adopting a well-known pressure building method; 2, every two adjacent cooling walls of the column are connected through a connecting pipe, an exhaust valve is arranged on each connecting pipe, and the outlet end of each exhaust valve is connected with a U-shaped pipe with a downward opening; 3, the column where the damaged cooling walls are located is changed into an open circuit, water is controlled until outflow water slightly surges or a white turbid phenomenon appears, a water return three-way valve is rotated by 90 degrees, so that the water outletend of the water return three-way valve is closed, the water inlet end and the side end of the water return three-way valve are opened, and a water inlet valve is switched off until the outflow watersurges or the white turbid phenomenon appears; and 4, the specific positions of the water leaking cooling walls are judged. According to the method, the positions where the water leaking cooling wallsare located can be rapidly and accurately judged online, treatment is timely carried out, and the influence of water leakage on production of a blast furnace is avoided. Water is not cut off in the whole leakage detection process, and the damage to the cooling walls or even the burning loss due to long-time water cut-off leakage detection is avoided.

Description

technical field [0001] The invention relates to an online method for rapidly determining specific leakage points of a cooling wall of a blast furnace, and belongs to the technical field of ironmaking equipment maintenance. Background technique [0002] The blast furnace body is composed of furnace shell, cooler, refractory materials, tuyere, etc., and is divided into hearth, bosh, furnace waist, furnace body and furnace throat from bottom to top. The blast furnace stave is installed on the furnace shell along the height direction and the circumferential direction of the blast furnace. The space between the furnace shell and the stave is filled with refractory materials, and the hot surface of the stave is inlaid with refractory bricks. Water pipes are cast in the stave of the blast furnace and cooled by water. Its main function is to maintain a certain strength of the brick lining of the furnace body, maintain the furnace shape and protect the furnace shell, and resist the d...

AI Technical Summary

Problems solved by technology

This kind of leak detection method is cumbersome to operate, with a large workload and low efficiency. It needs to be carried out under the state of regular maintenance and wind shutdown. In this way, the leaking stave can be dealt with until the next scheduled maintenance, and the treatment period is long, especially in the later period of furnace operation. , when there is a lot of damage to the stave, it cannot meet the production demand

Moreover, this method of leak detection cannot meet the requirements of online leak detection. Long-term water cutoff will cause unpredictable damage or even burnt to the cooling wall.

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