Pressure difference stabilizing device for blast furnace

Abstract

The utility model relates to the technical field of blast furnaces, and provides a blast furnace pressure difference stabilizing device which comprises a blast furnace and three pressure sensors arranged on the blast furnace, and the three pressure sensors are distributed on the furnace top, the furnace body and the furnace bottom of the blast furnace; through the arrangement of the controller, the three pressure sensors, the pressure release valve and the exhaust pipe, the gas pressure at the furnace top, the furnace body and the furnace bottom of the blast furnace can be detected, through the detection of the furnace top pressure of the blast furnace, the problem that the pressure is too high due to top gas accumulation can be found and treated in time, and safety accidents caused by the too high pressure are prevented; the pressure fluctuation in the middle of the blast furnace can be captured by detecting the pressure of a furnace body of the blast furnace, the balance of the pressure in the whole furnace body is facilitated, the smooth discharge of slag iron is ensured by detecting the pressure of the furnace bottom of the blast furnace, the damage to the structure caused by excessive pressure of the furnace bottom is prevented, and the safe operation of the furnace bottom area is ensured; therefore, the purpose of monitoring and adjusting the pressure difference of the blast furnace is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of blast furnace, specifically relates to blast furnace pressure difference stabilizing device. BACKGROUND

[0002] Steel is an important resource in building floors or railway construction. There are basically two processes for steel production, one of which is pig iron production, and blast furnace smelting is the main ironmaking method at present. Although many ironmaking methods have been developed, blast furnace smelting is still the main method of modern ironmaking due to its simple process, high yield and high labor productivity.

[0003] It is known that the Chinese public authorization patent (application number: 202320200100.3) discloses a blast furnace, which comprises a furnace body, the furnace body has a furnace shell and a furnace lining, the middle part of the furnace body is provided with a furnace belly, the furnace body is provided with a furnace belly angle at the furnace belly, the angle of the furnace belly angle is 70°-74°; a cooling channel is arranged between the furnace shell and the furnace lining, the furnace body is provided with a liquid outlet end near the top, the bottom of the furnace body is provided with a liquid inlet end, the liquid inlet end and the liquid outlet end are connected with the cooling channel, cooling liquid is introduced into the cooling channel through the liquid inlet end, and the cooling liquid in the cooling channel is discharged through the liquid outlet end. The special furnace belly angle of the blast furnace is beneficial to the formation of stable slag skin protection, the device is also provided with tuyeres of different sizes, which can improve the blast kinetic energy and reduce the edge airflow, further beneficial to the formation of stable slag skin protection, and the device ensures the cooling effect through the innovative circulating cooling process, prolonging the service life of the blast furnace.

[0004] However, in the implementation of the related technology, the above-mentioned blast furnace has the following problems: in the steel manufacturing process, the blast furnace is one of the most important production equipment. The gas flow and pressure condition in the blast furnace directly affect the quality and yield of molten iron. In the traditional blast furnace operation, due to the lack of effective pressure difference monitoring and adjusting means, pressure difference fluctuation often occurs, which leads to unstable production and even causes safety accidents, therefore, a blast furnace pressure difference stabilizing device is proposed. UTILITY MODEL CONTENTS

[0005] The utility model discloses blast furnace pressure difference stabilizing device, solved the related technology in the steel manufacturing process, the blast furnace is one of the most important production equipment. The gas flow and pressure condition in the blast furnace directly affect the quality and yield of molten iron. In the traditional blast furnace operation, due to the lack of effective pressure difference monitoring and adjusting means, pressure difference fluctuation often occurs, which leads to unstable production and even causes safety accidents.

[0006] The technical scheme of the utility model is as follows: blast furnace pressure difference stabilizing device, comprising: blast furnace;

[0007] Three pressure sensors are arranged on the blast furnace, and the three pressure sensors are distributed on the top, body and bottom of the blast furnace.

[0008] A fixed plate is fixedly installed on the outer wall of the blast furnace, and a controller is arranged on the front side of the fixed plate.

[0009] A protection mechanism is arranged on the outer wall of the blast furnace.

[0010] Preferably, the protection mechanism comprises a corrosion-resistant coating arranged on the outer wall of the blast furnace.

[0011] Preferably, the corrosion-resistant coating is coated with a high-temperature-resistant coating away from the outer wall of the blast furnace, and the high-temperature-resistant coating is specifically a metal oxide coating.

[0012] Preferably, the high-temperature-resistant coating is coated with a wear-resistant coating away from the outer wall of the blast furnace, and the wear-resistant coating is specifically a tungsten carbide coating.

[0013] Preferably, the wear-resistant coating is coated with a heat-insulating coating away from the outer wall of the blast furnace, and the heat-insulating coating is specifically a nano heat-insulating coating.

[0014] Preferably, the heat-insulating coating is coated with a self-repairing coating away from the outer wall of the blast furnace, and the self-repairing coating is specifically a self-healing polymer coating.

[0015] The working principle and beneficial effects of the utility model are as follows:

[0016] In use, the controller, the three pressure sensors, the pressure relief valve and the exhaust pipe are arranged to detect the gas pressure of the top, body and bottom of the blast furnace. Through the detection of the top pressure of the blast furnace, the problem of excessive pressure caused by the accumulation of gas at the top can be found and handled in time, and safety accidents caused by excessive pressure can be prevented. Through the detection of the body pressure of the blast furnace, the pressure fluctuation in the middle of the blast furnace can be captured to help balance the pressure in the entire furnace body. Through the detection of the bottom pressure of the blast furnace, the smooth discharge of slag and iron can be ensured, the damage to the structure caused by excessive bottom pressure can be prevented, and the safe operation of the bottom area can be ensured. Thus, the purpose of monitoring and adjusting the pressure difference of the blast furnace is achieved, the pressure change in the blast furnace is accurately mastered, effective control measures are taken, and the safe and stable operation of the blast furnace is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model will be explained in further detail in combination with the drawings and specific embodiments.

[0018] Fig. 1 The whole three-dimensional structure schematic diagram provided by the present application;

[0019] Fig. 2 The whole one side three-dimensional structure schematic diagram provided by the present application;

[0020] Fig. 3 The blast furnace plane section structure schematic diagram provided by the present application.

[0021] In the figure: 1, blast furnace; 2, pressure sensor; 3, exhaust pipe; 4, pressure relief valve; 5, fixed plate; 6, controller; 7, protection mechanism; 70, anticorrosion coating; 71, high temperature resistant coating; 72, wear-resistant coating; 73, heat insulation coating; 74, self-repairing coating. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor are involved in the protection scope of the present application.

[0023] Embodiment one

[0024] Please refer to Figs. 1 to 3 , the blast furnace pressure difference stabilizing device, comprising: a blast furnace 1;

[0025] Three pressure sensors 2 are arranged on the blast furnace 1, and the three pressure sensors 2 are distributed on the furnace top, the furnace body and the furnace bottom of the blast furnace 1. Three exhaust pipes 3 are arranged on one side of the blast furnace 1, and the outer side wall of the three exhaust pipes 3 is provided with a pressure relief valve 4.

[0026] A fixed plate 5 is fixedly installed on the outer side wall of the blast furnace 1, and the front side of the fixed plate 5 is provided with a controller 6. The controller 6 is electrically connected between the three pressure sensors 2 and the pressure relief valve 4, respectively.

[0027] The utility model provides technical scheme is provided, when using, through the parameter of three pressure sensors 2 of controller 6 setting, then through three pressure sensors 2 to the gas pressure of blast furnace 1 inside is detected, when detecting pressure exceeds the parameter of setting, will information to controller 6, controller 6 controls pressure relief valve 4 to open, makes gas to discharge through exhaust pipe 3, until reaching the range of setting, then close pressure relief valve 4, through three pressure sensors 2 setting different parameters can, the gas pressure of blast furnace 1's furnace top, shaft and furnace bottom is detected, through the blast furnace 1's furnace top pressure detection, help to find and handle the problem of pressure too high caused by top gas accumulation in time, prevent the safety accident caused by pressure too big, through the blast furnace 1's shaft pressure detection, can capture the pressure fluctuation of blast furnace 1 middle part, help balance the pressure in whole furnace body, through the blast furnace 1's furnace bottom pressure detection, ensure that slag iron is discharged smoothly, prevent the damage of blast furnace bottom pressure too big to structure, and guarantee the safe operation of furnace bottom area, to realize the purpose of blast furnace 1 pressure difference monitoring and regulation, and accurate grasp the pressure change in blast furnace 1, take effective control measures, ensure the safe and stable operation of blast furnace 1.

[0028] Embodiment two

[0029] On the basis of embodiment one, in this embodiment: the protection mechanism 7 arranged on the outer wall of the blast furnace 1, the protection mechanism 7 includes a corrosion-resistant coating 70 coated on the outer wall of the blast furnace 1, the corrosion-resistant coating 70 is specifically epoxy resin paint, the corrosion-resistant coating 70 is coated with a high-temperature-resistant coating 71 away from the outer wall of the blast furnace 1, the high-temperature-resistant coating 71 is specifically metal oxide paint, the high-temperature-resistant coating 71 is coated with a wear-resistant coating 72 away from the outer wall of the blast furnace 1, the wear-resistant coating 72 is specifically tungsten carbide coating, the wear-resistant coating 72 is coated with a heat-insulating coating 73 away from the outer wall of the blast furnace 1, the heat-insulating coating 73 is specifically nano heat-insulating paint, and the heat-insulating coating 73 is coated with a self-repairing coating 74 away from the outer wall of the blast furnace 1, the self-repairing coating 74 is specifically a self-healing polymer coating.

[0030] The technical scheme provided by the embodiment is: through the corrosion protection of the corrosion-resistant coating 70, the blast furnace 1 is prevented from being affected by the corrosion medium, the high-temperature-resistant performance of the coating system is enhanced through the high-temperature-resistant coating 71, so that the coating does not fall off or fail in a high-temperature environment, the wear-resistant performance of the surface of the blast furnace 1 is improved through the wear-resistant coating 72, thereby prolonging the service life of the blast furnace 1, heat transfer is reduced through the heat-insulating coating 73, the surface temperature of the blast furnace 1 is reduced, energy efficiency is improved, the self-repairing coating 74 has a certain self-repairing ability and can repair itself when slightly damaged, thereby prolonging the service life of the coating, and through the superposition of coatings with different functions, the surface of the blast furnace 1 can be protected in multiple ways, including corrosion resistance, high-temperature resistance, wear resistance, heat insulation, and self-repairing functions. Not only improves the operation reliability and safety of the blast furnace 1, but also prolongs the service life and reduces the maintenance cost.

[0031] The utility model discloses a working principle: when using, set up three pressure sensor 2's parameters through controller 6, then through three pressure sensor 2 to the gas pressure in blast furnace 1 detection, when detecting pressure exceeds the parameter set, will information transmission to controller 6, and controller 6 controls pressure -relief valve 4 to open, makes gas to discharge through exhaust pipe 3, until reaching the range set, then close pressure -relief valve 4, set up different parameters through three pressure sensor 2 simultaneously, can detect the gas pressure of blast furnace 1's furnace top, furnace body and furnace bottom, through the furnace top pressure detection of blast furnace 1, it is helpful to discover and handle the problem of the pressure too high caused by the top gas accumulation in time, prevent the safety accident caused by the pressure too big, through the furnace body pressure detection of blast furnace 1, can capture the pressure fluctuation in blast furnace 1 middle part, help balance the pressure in whole furnace body, through the furnace bottom pressure detection of blast furnace 1, ensure that slag iron discharges smoothly, prevent the damage to structure caused by the furnace bottom pressure too big, and guarantee the safe operation of furnace bottom area, to realize the purpose of blast furnace 1 pressure difference monitoring and regulation, and accurate grasp the pressure change in blast furnace 1, take effective control measures, ensure the safe and stable operation of blast furnace 1.

[0032] The above is only the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A differential pressure stabilizing device for a blast furnace, characterized by comprising: The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace.

2. The differential pressure stabilizing device for blast furnace according to claim 1, characterized by: The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace.

3. The differential pressure stabilizing device for blast furnace according to claim 2, characterized in that: The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace.

4. The pressure differential stabilizing device for blast furnace according to claim 3, characterized by: The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace.

5. The differential pressure stabilizing device for blast furnace according to claim 4, characterized in that: The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace.

6. The pressure differential stabilizing device for blast furnace according to claim 5, characterized by: The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high-temperature resistant and wear-resistant protective mechanism for a blast furnace. The application relates to a high

Images