Leak checking device and leak checking method for blast furnace multi-stage connection closed circulation cooling water system

Abstract

The invention discloses a leakage detecting device of a blast furnace multistage connected closed circulating cooling water system and a leakage detecting method thereof. The leakage detecting device comprises a pressure gage, a three-way pipe, connecting pipes, a pressure measuring valve and a pressurization valve, wherein the pressure measuring end of the three-way pipe is communicated with the pressure gage through the pressure measuring valve; the outlet end of the three-way pipe is connected with the blast furnace multistage connected closed circulating cooling water system through a connecting pipe; the inlet end of the three-way pipe is communicated with pressurization medium through the pressurization valve and a connecting pipe. The method comprises the steps of connecting the device to the system, detecting leakage points of the system and fixing the leakage points. The device can detect leakage without affecting normal production of a blast furnace, timely find out and confirm whether the system has phenomena of damage and water leakage, properly adjust the flow in case of water leakage, so as to prevent a large amount of water from flowing into the furnace, reduce fuel consumption caused by increased leaked water while keeping stable and sustained production of the blast furnace, reduce the blast furnace cost, fix the leakage points and block the leakage points after the blast furnace is shut down, and save a large amount of time, manpower and material resource.

Description

technical field [0001] The invention belongs to the technical field of ironmaking equipment detection, and relates to a leak checking device and a leak checking method for a blast furnace multi-stage connection closed circulation cooling water system with simple structure, fast detection speed and convenient operation. Background technique [0002] With the rapid development of today's iron and steel enterprises, the large-scale, high-pressure, and automation of blast furnaces are getting higher and higher. It has become a prominent problem that blast furnaces can maintain normal, stable, and smooth production for a long time. During the production process of the blast furnace, along with changes in the furnace thermal force, thermal shock, slag shedding, burning, wear, etc., especially in the middle and late stages of blast furnace production, the contradictions exposed by the cooling system are particularly prominent. Up to now, there are few blast furnace vaporization lea...

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Problems solved by technology

However, since the water flow of the multi-stage connection closed circulation cooling water system of the blast furnace cannot be seen visually, and there is no section in the middle, and the water flow needs to circulate the entire multi-stage connection closed circulation system, the water pressure will decrease due to the long head, so for the above ignition method, observation Conventional leak detection methods, such as the pressure-suppression method and the pressure suppression method, cannot quickly and accurately find the leak point, and it is difficult to meet the requirements for rapid leak detection of the blast furnace multi-stage connection closed circulating cooling water system.

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