A protective device for preventing air and dust accumulation during the use of phased array radar

Abstract

The invention discloses a protection device for preventing air leakage and ash deposition in a phase array radar using process. The protection device comprises a radar and a radar barrel body, wherein the radar barrel body sleeves the outer side of the radar, a mounting flange is welded on the upper part of the radar barrel body, a stepped radar shell base plate is fixedly arranged at the top of the radar and is surrounded by a split type ring washer through a washer connection bayonet, a ring hanging line is fixedly connected with the stepped radar shell base plate, and high-temperature-resistance glass filling cotton is contained in an interval between the radar and the radar barrel body. According to the protection device for preventing the air leakage and the ash deposition in the phase array radar using process, a step design is utilized in a radar shell base plate machining process; after the radar is installed, a movable washer is arranged at the lower part of the radar so that the high temperature environment of the furnace interior is blocked by the movable washer, and then the high-temperature-resistance glass filling cotton is contained in the washer so that the temperature of a furnace shell is within a proper working range no matter how the temperature of the furnace interior changes; in addition, the cotton and the washer can be conveniently taken out and do not influence the change and maintenance of the radar.

Description

technical field [0001] The present invention relates to the technical field of radar, in particular to a protection device for preventing gas and ash accumulation during use of a phased array radar. Background technique [0002] The inner volume of large blast furnaces is generally 2000-5500m 3 In between, the blast furnace is a high temperature (furnace temperature from 120 ℃ to 2350 ℃), high pressure (the maximum pressure in the furnace can reach 5 atmospheres), high dust closed countercurrent reactor, from the control point of view, the blast furnace is a multivariable, A huge system with large delay and nonlinearity has many influencing factors. Various factors affecting the blast furnace smelting process often make it difficult for blast furnace operators to accurately obtain relevant blast furnace information. At present, operators can only operate through experience. Currently the blast furnace is still a black box. [0003] The blast furnace operation is smelted by...

AI Technical Summary

Problems solved by technology

Because the blast furnace is a closed huge reactor, the distribution of the charge on the top of the furnace cannot be seen directly. In order to solve this problem, in recent years, cross temperature measuring devices on the top of the furnace, infrared thermal imagers, gas sampling machines, microwave charge surface Measuring instruments such as gauges have been applied to blast furnaces one after another. Although these devices have provided a lot of useful information for the blast furnace foreman to accurately judge the furnace condition and greatly improved the operation level of the blast furnace, it is difficult to obtain the full material surface in time, three-dimensional real-time information

[0004] The existing design has designed a phased array radar for blast furnace charge level measurement and successfully used the blast furnace charge level measurement radar installed behind the furnace roof, but for the phased array for charge level measurement, the phased array radar There are many urgent problems that need to be solved during use, one of which is the safety of radar installation. There is a gap of about 5mm between the radar and the sleeve. Because the blast furnace is filled with high-pressure gas, the gas pressure at the top of the furnace is 0.18-0.25Mpa. Change between, the top gas generation is 10000m 3 / min, where the CO content varies between 20-25%, the radar is installed in the sleeve, there is only one layer of steel plate between the sleeve and the roof cover, the steel plate directly faces the gas in the furnace, and the temperature of the furnace roof is normal It is safe to use radar when changing between 130-350°C, but in extreme cases, such as when the blast furnace slips or collapses, the distribution of the charge in the furnace is abnormal, and the furnace top temperature can reach 600°C within 1-2min Above, in this case, the temperature of the furnace top sealing plate will rise with the rise of the gas temperature, and the strength of the furnace roof steel plate will drop sharply at high temperature. cause great danger

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