CN216205227U

CN216205227U - Oxygen content adjusting structure for steel smelting equipment

Info

Publication number: CN216205227U
Application number: CN202122335867.0U
Authority: CN
Inventors: 王德成; 解生礼; 宋洋; 席晓冬
Original assignee: Liaoyang Iron And Steel Co ltd
Current assignee: Liaoyang Iron And Steel Co ltd
Priority date: 2021-09-26
Filing date: 2021-09-26
Publication date: 2022-04-05
Anticipated expiration: 2031-09-26

Abstract

The utility model discloses an oxygen content adjusting structure for steel smelting equipment, which comprises a combustion furnace, wherein a vent pipe is arranged on the surface of the combustion furnace, the tail end of the vent pipe is connected with a mixing box, oxygen concentration measuring instruments are arranged on the top of the combustion furnace and the top of the mixing box, an oxygen conveying pipe and a gas conveying pipe are connected to the surface of one side of the mixing box in a penetrating manner, the tail ends of the oxygen conveying pipe and the gas conveying pipe are connected with a storage barrel, and an air outlet barrel is arranged on the surface of the combustion furnace. The oxygen concentration measuring instrument arranged at the top of the combustion furnace is used for detecting the oxygen content in the combustion furnace and detecting whether the oxygen content in the combustion furnace meets the requirement of steel smelting, so that oxygen with a certain concentration can be conveniently added into the combustion furnace according to the monitoring result, and the oxygen concentration measuring instrument arranged at the top of the mixing box is used for detecting whether the concentration of the oxygen arranged in the mixing box is within the required range or not, so that the oxygen with a certain concentration can be conveniently arranged.

Description

Oxygen content adjusting structure for steel smelting equipment

Technical Field

The utility model relates to the technical field of steel smelting, in particular to an oxygen content adjusting structure for steel smelting equipment.

Background

The steel smelting is a process of changing metal from a combined state to a free state, a reducing agent is used for reducing metal oxide into a metal simple substance, and oxygen with a certain concentration is added into equipment to enable pulverized coal to be fully combusted to obtain enough heat, but the content of the oxygen needs to be controlled within a certain range, so that certain influence of the chemical property of the oxygen on other substances is avoided.

The existing oxygen content adjusting structure device has the following defects:

1. the utility model discloses a chinese novel practical patent with publication number CN212930967U, discloses an oxygen content adjusting structure for steel smelting equipment, and relates to the technical field of steel smelting. The device comprises a combustion furnace, a liquefaction furnace arranged at the upper end of the combustion furnace, and an air pump and a gas mixing tank which are arranged outside the combustion furnace, wherein a heat transfer mechanism is connected between the upper end of the combustion furnace and the liquefaction furnace, one side of the upper end of the combustion furnace is respectively communicated with the air pump and the gas mixing tank through an oxygen inlet pipe, an air storage pipe is arranged between the air pump and the oxygen inlet pipe, an oxygen concentration monitor is arranged inside the gas mixing tank, and the upper end of the gas mixing tank is respectively provided with an oxygen inlet and an inert gas connector.

However, the oxygen content adjusting structure of the above publication cannot accurately detect the oxygen content in the combustion furnace, further cannot accurately adjust the amount of oxygen to be added, cannot measure the concentration of the added mixed oxygen, and may cause a phenomenon in which there is a certain deviation between the adjusted oxygen concentration and the required oxygen concentration.

In view of the above, it is necessary to develop an oxygen content adjusting structure for an iron and steel smelting facility capable of detecting not only the oxygen content in a combustion furnace but also the adjusted oxygen concentration.

2. The oxygen concentration of the existing oxygen content adjusting structure is difficult to control, the oxygen concentration is difficult to adjust according to actual requirements, the oxygen content is difficult to adjust during actual steel smelting, and certain influence on the steel smelting can be caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an oxygen content adjusting structure for steel smelting equipment, which solves the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an oxygen content adjusts structure for iron and steel smelting equipment, includes fires burning furnace, the surface mounting who fires burning furnace has the breather pipe, the trailing end connection of breather pipe has the mixing box, the top that fires burning furnace and the top of mixing box all install oxygen concentration measurement appearance, the cable is installed at oxygen concentration measurement appearance's top, detecting probe is installed to the tail end of cable, and two sets of detecting probe run through respectively and extend to the top that fires burning furnace and the inside of mixing box.

Preferably, one side surface of the mixing box is connected with an oxygen tube and an air pipe in a penetrating manner, the air pipe is positioned in front of the oxygen tube, and the tail ends of the oxygen tube and the air pipe are both connected with a storage barrel.

Preferably, the surface of the combustion furnace is provided with an air outlet cylinder, and the air outlet cylinder and the mixing box are symmetrically arranged around the combustion furnace.

Preferably, the cylinder is installed at the top of storage bucket, the input of cylinder runs through the inside that extends to storage bucket, the push pedal is installed to the output of cylinder, and the diameter of push pedal equals with the internal diameter size of storage bucket.

Preferably, the motor is installed at the top of mixing box, and the motor is located one side of oxygen concentration measurement appearance, the output of motor runs through the inside that extends to the mixing box, mixed otter board is installed to the output of motor, and mixes the otter board and be located the inside of mixing box.

Preferably, the inner wall of the air outlet cylinder is provided with a leakage net, the surface of the leakage net is provided with an exhaust fan, the inner wall of the air outlet cylinder is provided with an activated carbon net plate, and the activated carbon net plate is positioned on one side of the leakage net.

Preferably, an electric valve is arranged on the surface of the vent pipe in a penetrating mode.

Preferably, the surface of the oxygen conveying pipe is provided with a valve A in a penetrating mode, and the surface of the gas conveying pipe is provided with a valve B in a penetrating mode.

Preferably, the bottom of the combustion furnace is provided with support legs, and the bottom of the gas outlet cylinder is provided with a base.

Compared with the prior art, the utility model has the beneficial effects that:

1. the oxygen concentration measuring instrument arranged at the top of the combustion furnace is used for detecting the oxygen content in the combustion furnace and detecting whether the oxygen content in the combustion furnace meets the steel smelting requirement or not, so that oxygen with a certain concentration can be conveniently added into the combustion furnace according to the monitoring result, and the oxygen concentration measuring instrument arranged at the top of the mixing box is used for detecting the oxygen concentration in the mixing box and detecting whether the oxygen concentration arranged in the mixing box is in the required range or not, so that the oxygen content in the combustion furnace can be conveniently detected.

2. According to the utility model, the mixing box and the storage barrels are arranged, oxygen and inert gas are respectively stored in the two groups of storage barrels, oxygen with a certain concentration can be conveniently configured, the oxygen and the inert gas push the push plate through the air cylinder, the extrusion gas flows into the mixing box to be mixed, the motor is utilized to drive the mixing screen plate to rotate, the oxygen and the inert gas in the mixing box can be mixed by the mixing screen plate in the rotating process, the inert gas and the oxygen are uniformly mixed, so that the oxygen with a certain concentration can be configured, the influence of overhigh oxygen concentration on the reduction reaction of metal oxides can be avoided, in addition, the oxygen can be prevented from remaining and reacting with equipment, the inner wall of the equipment is corroded and damaged, the detection effectiveness of an oxygen concentration tester is facilitated, and the combustion effect of fuel in a combustion furnace can be effectively adjusted.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the structure of a storage tub and a cylinder according to the present invention;

FIG. 3 is a schematic diagram of the construction of the air outlet cylinder and the air extractor of the present invention;

fig. 4 is a schematic view of the structure of the mixing box and the motor of the present invention.

In the figure: 1. a combustion furnace; 2. a mixing box; 201. a breather pipe; 202. an electrically operated valve; 3. a storage barrel; 301. an oxygen delivery tube; 302. a gas delivery pipe; 303. a valve A; 304. a valve B; 4. a cylinder; 401. pushing the plate; 5. a motor; 501. mixing the screen plate; 6. an oxygen concentration measuring instrument; 7. an exhaust fan; 8. an air outlet cylinder; 801. a base; 802. a leakage net; 803. an activated carbon screen plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the first embodiment, referring to fig. 1 and fig. 3, an embodiment of the present invention: the utility model provides an oxygen content adjusts structure for iron and steel smelting equipment, includes and fires burning furnace 1, the surface mounting who fires burning furnace 1 has breather pipe 201, the surface of breather pipe 201 runs through to install electric valve 202, the trailing end connection of breather pipe 201 has mixing box 2, it all installs oxygen concentration apparatus 6 to fire the top of burning furnace 1 and the top of mixing box 2, the cable is installed to the top of oxygen concentration apparatus 6, the tail end of cable is installed test probe, and two sets of test probe run through respectively and extend to the inside of the top that fires burning furnace 1 and mixing box 2.

Specifically, gaseous through breather pipe 201 transport to the inside of burning furnace 1, supplementary steel is smelted, can control gaseous transport condition through utilizing electric valve 202, mixing box 2 is applicable to the concentration of adjusting oxygen, mix through oxygen and inert gas, and then can obtain the oxygen of required concentration, conveniently smelt steel, the oxygen concentration apparatus 6 at burning furnace 1 top is used for detecting the inside oxygen content of burning furnace 1, whether detect the inside oxygen content of burning furnace 1 and reach the steel smelting demand, for adding oxygen and providing the judgement foundation, guarantee abundant burning, and reduce the formation of carbon monoxide, the oxygen concentration apparatus 6 at mixing box 2 top is used for detecting the inside oxygen content of mixing box 2, detect the inside oxygen concentration of mixing box 2, conveniently further measure the inside oxygen content of burning furnace 1.

The surface of the combustion furnace 1 is provided with an air outlet cylinder 8, the air outlet cylinder 8 and the mixing box 2 are symmetrically arranged relative to the combustion furnace 1, the inner wall of the air outlet cylinder 8 is provided with a leakage net 802, the surface of the leakage net 802 is provided with an exhaust fan 7, the inner wall of the air outlet cylinder 8 is provided with an active carbon screen plate 803, the active carbon screen plate 803 is positioned on one side of the leakage net 802, the bottom of the combustion furnace 1 is provided with support legs, and the bottom of the air outlet cylinder 8 is provided with a base 801.

Specifically, after the combustion furnace 1 burns for a period of time and steel is smelted, a large amount of gases such as carbon-containing compounds and sulfur-containing compounds are generated in the combustion furnace 1, the gas outlet cylinder 8 is arranged to facilitate the discharge of the gases such as the carbon-containing compounds and the sulfur-containing compounds generated in the combustion furnace 1 after combustion, the gases can be accelerated to flow out through the combustion furnace 1 by exhausting through the exhaust fan 7, and the installation of the activated carbon screen plate 803 can adsorb harmful gases and reduce the pollution to air;

start air exhauster 7, the inside gas that fires burning furnace 1 can receive air exhauster 7's suction, flow into the inside of play chimney 8 with higher speed, flow out to the tail end of play chimney 8 through leaking net 802, gaseous can be adsorbed by activated carbon otter board 803 after passing through leaking net 802 and filter, detach the harmful gas in the mist, can purify burning tail gas from this, prevent air pollution, supporting leg and base 801 play good supporting role to firing furnace 1 and play chimney 8 respectively.

Embodiment two, as shown in fig. 2 and 4, an oxygen content adjusts structure for steel smelting equipment, including storage bucket 3, one side surface through connection of mixing box 2 has oxygen therapy pipe 301 and gas-supply pipe 302, and gas-supply pipe 302 is located the place ahead of oxygen therapy pipe 301, the tail end of oxygen therapy pipe 301 and gas-supply pipe 302 all is connected with storage bucket 3, oxygen therapy pipe 301's surface is run through and is installed valve first 303, the surface of gas-supply pipe 302 is run through and is installed valve second 304, cylinder 4 is installed at the top of storage bucket 3, the input of cylinder 4 runs through the inside that extends to storage bucket 3, push pedal 401 is installed to the output of cylinder 4, and the diameter of push pedal 401 equals with the internal diameter size of storage bucket 3.

Specifically, oxygen is stored in the storage barrel 3 connected with the oxygen pipe 301, inert gas is stored in the storage barrel 3 connected with the gas pipe 302, the oxygen enters the mixing box 2 through the oxygen pipe 301, the valve A303 controls the conveying of the oxygen, the inert gas enters the mixing box 2 through the gas pipe 302, the valve B304 controls the conveying of the inert gas, and the cylinder 4 and the push plate 401 are arranged to apply pressure to the gas, so that the gas is conveniently conveyed;

when gas is required to be added into the mixing box 2, the cylinder 4, the valve A303 and the valve B304 are started, the output end of the cylinder 4 is extended downwards, the push plate 401 is pushed to move downwards, the gas is subjected to the pressure of the push plate 401 and is conveyed into the mixing box 2 through the oxygen conveying pipe 301 or the gas conveying pipe 302, and therefore the gas inside the storage barrel 3 cannot be wasted and can be completely conveyed and utilized.

Motor 5 is installed at the top of mixing box 2, and motor 5 is located one side of oxygen concentration measurement appearance 6, the output of motor 5 runs through the inside that extends to mixing box 2, mixed otter board 501 is installed to the output of motor 5, and mixes otter board 501 and be located the inside of mixing box 2.

Specifically, the motor 5 is installed to conveniently drive the mixing screen plate 501 to rotate, the mixing screen plate 501 is installed to mix two input gases, the motor 5 is started, the output end of the motor 5 rotates to drive the mixing screen plate 501 to rotate, the mixing screen plate 501 can mix oxygen and inert gas in the rotating process, because the reduced metal simple substance is easy to generate oxidation reaction due to the over-high oxygen concentration, the reduction reaction in the equipment is influenced, and the oxygen content is too high, the oxygen can react with the equipment to corrode the equipment and damage the equipment, the chemical property of the inert gas is stable, the inert gas can not react with metal oxide, metal simple substance or other gases, the inert gas and the oxygen are uniformly mixed, and the oxygen with a certain concentration can be obtained, further effectively adjusting the combustion effect of the fuel in the furnace and being beneficial to the effectiveness of the detection of the oxygen concentration determinator 6.

The working principle is as follows: an oxygen concentration tester 6 at the top of the combustion furnace 1 is used for detecting whether the oxygen content in the combustion furnace 1 meets the steel smelting requirement, when oxygen with a certain concentration needs to be added into the combustion furnace 1, the cylinder 4, the valve A303 and the valve B304 are started, the output end of the cylinder 4 is extended downwards, the push plate 401 is pushed to move downwards, the gas is pressed by the push plate 401, the oxygen is conveyed into the mixing box 2 through the oxygen conveying pipe 301 or the gas conveying pipe 302, the motor 5 is started, the output end of the motor 5 rotates to drive the mixing screen plate 501 to rotate, the mixing screen plate 501 can mix oxygen and inert gas in the rotating process to uniformly mix the inert gas and the oxygen, thereby obtaining oxygen with a certain concentration, and detecting whether the oxygen content in the mixing box 2 is in a required range by using an oxygen concentration tester 6, so as to facilitate further oxygen content in the combustion furnace 1;

combustion furnace 1 is carrying out the burning of a period of time, after the smelting steel, the inside of burning furnace 1 produces a large amount of carbon-containing compound and contains gas such as sulphur compound, start air exhauster 7, the gas of the inside of burning furnace 1 can receive the suction of air exhauster 7, flow into the inside of play chimney 8 with higher speed, flow out to the tail end of play chimney 8 through leaking net 802, gas can be adsorbed by activated carbon otter board 803 after passing through leaking net 802 and filter, harmful gas in the mist is detached, can clean combustion tail gas from this, air pollution is prevented.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. An oxygen content adjusting structure for steel smelting equipment comprises a combustion furnace (1), and is characterized in that: the surface of the combustion furnace (1) is provided with a vent pipe (201), the tail end of the vent pipe (201) is connected with a mixing box (2), the top of the combustion furnace (1) and the top of the mixing box (2) are both provided with an oxygen concentration tester (6), the top of the oxygen concentration tester (6) is provided with a cable, the tail end of the cable is provided with detection probes, and the two groups of detection probes respectively penetrate and extend to the top of the combustion furnace (1) and the inside of the mixing box (2);

an oxygen conveying pipe (301) and an air conveying pipe (302) are connected to the surface of one side of the mixing box (2) in a penetrating mode, the air conveying pipe (302) is located in front of the oxygen conveying pipe (301), and the tail ends of the oxygen conveying pipe (301) and the air conveying pipe (302) are connected with a storage barrel (3);

the surface of the combustion furnace (1) is provided with an air outlet cylinder (8), and the air outlet cylinder (8) and the mixing box (2) are symmetrically arranged relative to the combustion furnace (1).

2. The oxygen content adjusting structure for steel smelting equipment according to claim 1, characterized in that: store the top of bucket (3) and install cylinder (4), the input of cylinder (4) runs through the inside that extends to storage bucket (3), push pedal (401) are installed to the output of cylinder (4), and the diameter of push pedal (401) equals with the internal diameter size of storing bucket (3).

3. The oxygen content adjusting structure for steel smelting equipment according to claim 1, characterized in that: motor (5) are installed at the top of mixing box (2), and motor (5) are located one side of oxygen concentration measurement appearance (6), the output of motor (5) runs through the inside that extends to mixing box (2), mixed otter board (501) is installed to the output of motor (5), and mixes otter board (501) and is located the inside of mixing box (2).

4. The oxygen content adjusting structure for steel smelting equipment according to claim 1, characterized in that: the inner wall of air outlet cylinder (8) is installed and is leaked net (802), the surface mounting who leaks net (802) has air exhauster (7), activated carbon otter board (803) is installed to the inner wall of air outlet cylinder (8), and activated carbon otter board (803) are located one side of leaking net (802).

5. The oxygen content adjusting structure for steel smelting equipment according to claim 1, characterized in that: an electric valve (202) is arranged on the surface of the breather pipe (201) in a penetrating way.

6. The oxygen content adjusting structure for steel smelting equipment according to claim 1, characterized in that: the surface of the oxygen conveying pipe (301) is provided with a valve A (303) in a penetrating mode, and the surface of the air conveying pipe (302) is provided with a valve B (304) in a penetrating mode.

7. The oxygen content adjusting structure for steel smelting equipment according to claim 1, characterized in that: the bottom of the combustion furnace (1) is provided with supporting legs, and the bottom of the air outlet cylinder (8) is provided with a base (801).