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High-efficiency conversion device for non-fluctuation stove changing of hot blast stoves and control method

A conversion device and hot blast furnace technology, applied in furnaces, blast furnaces, heating furnaces, etc., can solve problems such as fluctuations and long charging time, and achieve the effect of reducing furnace replacement time and improving work efficiency

Active Publication Date: 2021-10-29
郑州豫兴热风炉科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a high-efficiency conversion device and control method for a hot blast stove without fluctuations, so as to solve the problems of long charging time and fluctuations in the existing hot blast stove replacement process

Method used

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  • High-efficiency conversion device for non-fluctuation stove changing of hot blast stoves and control method
  • High-efficiency conversion device for non-fluctuation stove changing of hot blast stoves and control method
  • High-efficiency conversion device for non-fluctuation stove changing of hot blast stoves and control method

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Experimental program
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Effect test

Embodiment 1

[0038] A high-efficiency conversion device for non-fluctuating furnace change of a hot blast furnace of the present invention includes a blower 1 and an air compressor 2, the air compressor 2 is connected with the intake valve of the gas storage tank 3, and the exhaust port of the gas storage tank 3 passes through the pressure reducing valve. 4 is communicated with the charging pipeline, the charging pipeline is connected with the charging valve 13 of each hot blast stove 5, the bottom of each hot blast stove 5 is provided with a first cold air valve 7, and the first cold air valve 7 is connected with the blower 1 through the cold air main pipe There is a differential pressure gauge 8 between the cold air main pipe and the charging pipe, a flow meter is provided in the charging pipe at the rear end of the pressure reducing valve 4; the air storage tank 3 is provided with a safety valve 9.

[0039] When in use, the air compressor 2 compresses the air and sends the compressed air i...

Embodiment 2

[0041] The inventor found that adding a set of air compressors and a gas supply station alone through the above solution requires a lot of land and a lot of money, which increases the burden and risk for the enterprise to build a factory. Further improvements.

[0042] A high-efficiency conversion device for non-fluctuating furnace change of a hot blast stove 5 of the present invention includes a blower 1, and the air outlet of the blower 1 is connected with the first cold air main pipe and the second cold air main pipe at the same time, and the connection port of the first cold air main pipe and the blower 1 There is a pressure equalizing valve 10; an air pressure sensor 11 is provided at the connection port of the second cold air main pipe and the blower 1, and the second cold air main pipe at the rear end of the air pressure sensor 11 is provided with a second cold air main pipe intake valve, and the first cold air main pipe passes through the first cold air main pipe. A co...

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Abstract

The invention belongs to the technical field of hot blast stoves, particularly relates to a high-efficiency conversion device for non-fluctuation stove changing of hot blast stoves and a control method, and discloses the high-efficiency conversion device for non-fluctuation stove changing of the hot blast stoves. The high-efficiency conversion device comprises an air blower, and an air outlet of the air blower is communicated with a first cold air main pipe and a second cold air main pipe at the same time; a pressure equalizing valve is arranged at a connecting port of the first cold air main pipe and the air blower; an air pressure sensor is arranged at a connecting port of the second cold air main pipe and the air blower, a second cold air main pipe air inlet valve is arranged in the second cold air main pipe and at the rear end of the air pressure sensor, and the first cold air main pipe is connected with cold air valves and pressurizing valves on all the hot blast stoves through first cold air branch pipes; and air pressure sensors are arranged at air inlets of the first cold air branch pipes. By means of the high-efficiency conversion device, a closed cold air chamber composed of a first movable disc and a second movable disc is pressurized in advance, the time of transferring from combustion to air supply of the hot blast stoves is shortened, the pressure difference between the first cold air main pipe and the second cold air main pipe is reduced, and fluctuation-free stove changing is achieved.

Description

technical field [0001] The invention belongs to the technical field of hot blast stoves, and more specifically relates to a high-efficiency conversion device and control method for a hot blast stove without fluctuation. Background technique [0002] The hot blast stove is an accessory device that provides high-temperature hot air for the blast furnace. In the operation of the hot blast stove, it is necessary to ensure the stability and continuity of the air supply to the blast furnace, and to prevent vicious production accidents. The hot stove production process is realized by switching the working state of each valve. The hot blast stove usually has three states: combustion, air supply, and stew. The process of switching from the combustion state to the air supply state is called furnace replacement. During furnace replacement, it must be ensured that at least one hot blast stove is in the state of supplying air, and the other hot blast stove can be transformed into comb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B9/00C21B9/10
CPCC21B9/00C21B9/10
Inventor 马茜吕艳玲刘力铭刘力源艾会霞赵晓璐
Owner 郑州豫兴热风炉科技有限公司