CN218786638U - Oxygen lance system capable of rapidly recovering furnace condition - Google Patents

Oxygen lance system capable of rapidly recovering furnace condition Download PDF

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Publication number
CN218786638U
CN218786638U CN202222944105.5U CN202222944105U CN218786638U CN 218786638 U CN218786638 U CN 218786638U CN 202222944105 U CN202222944105 U CN 202222944105U CN 218786638 U CN218786638 U CN 218786638U
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oxygen
compressed air
temperature measurement
interface
pressure transmitter
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CN202222944105.5U
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黄晓江
沈志强
尹振亭
崔维杰
鲁敏
杨志
张井营
马瑞成
王志会
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Tianjin New Tiangang United Special Steel Co Ltd
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Tianjin New Tiangang United Special Steel Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Abstract

The utility model belongs to the technical field of the oxygen rifle system, especially, relate to a resume stove condition oxygen rifle system fast, resume stove condition oxygen rifle system fast includes: oxygen supply system: the oxygen supply system comprises an oxygen interface, a flowmeter B, a pressure transmitter A, an adjusting controller A, a control valve A and an oxygen point valve box which are sequentially connected through a pipeline; a compressed air system: the compressed air system comprises a compressed air interface, a flow instrument A, a pressure transmitter B, an adjusting controller B, a control valve B and a compressed air bag which are sequentially connected through a pipeline, and the adjusting controller B and the pressure transmitter B are connected with a computer control display through signal lines; temperature measurement system: the temperature measuring system comprises a temperature measuring couple, a field display and a computer control display which are connected in sequence; an imaging system: the imaging system comprises a peephole and a camera, and the peephole and the camera are connected with a computer for controlling and displaying. The utility model provides an oxygen lance system capable of rapidly recovering furnace conditions.

Description

Oxygen lance system capable of rapidly recovering furnace condition
Technical Field
The utility model belongs to the technical field of the oxygen rifle system, especially, relate to a resume stove condition oxygen rifle system fast.
Background
The prior art is as follows:
in the blast furnace ironmaking production process, the successful blow-in of the blast furnace is marked by the fact that the iron can smoothly flow out for the first time, and the blast furnace ironmaking production process has good fluidity and sufficient heat. Therefore, before blast furnace air supply or during furnace recovery, workers can pre-embed the oxygen lance in advance, or insert the oxygen lance into the iron notch with air to enrich oxygen in the blast furnace, so that a furnace hearth is heated or low-heat iron slag during furnace recovery is heated, the fluidity of the iron slag is greatly increased, the iron notch smoothly flows out, the time of the first iron tapping interval is longer, the iron quantity is more, and the difficulty in opening the first iron notch during furnace opening, poor fluidity and overlong iron notch opening time are avoided. The liquid slag iron is too long along with the opening time, the inner wall of the furnace hearth absorbs heat to cause the reduction of the volume of the furnace hearth, and the serious accident of burning loss of the tuyere sleeve is easily caused after the iron surface rises.
The existing oxygen lance using technology does not have any visual embodiment on the consumption of air and oxygen, the burning loss condition of the oxygen lance and the state of a furnace hearth, and the oxygen lance is in a blind operation state when being used. The oxygen lance can be burnt out and the refractory in the furnace hearth can be burnt out even cooling equipment such as a cooling wall is burnt out due to the excessive consumption of the oxygen, so that the water leakage can be burnt out, and malignant accidents such as explosion and the like can be caused; the oxygen consumption is less, and the oxygen lance can not heat the active furnace hearth, so that the oxygen lance can not play a due role.
The difficulty and significance for solving the technical problems are as follows:
therefore, based on the problems, the oxygen lance system capable of quickly recovering the furnace condition has important practical significance.
SUMMERY OF THE UTILITY MODEL
The application aims to provide an oxygen lance system capable of quickly recovering furnace conditions in order to solve the technical problems in the prior art.
The technical scheme adopted by the embodiment of the application to solve the technical problems in the prior art is as follows:
a rapid recovery furnace condition oxygen lance system, comprising:
oxygen supply system: the oxygen supply system comprises an oxygen interface, a flow meter B, a pressure transmitter A, an adjusting controller A, a control valve A and an oxygen point valve box which are sequentially connected through a pipeline, wherein the adjusting controller A and the pressure transmitter A are connected with a computer control display through signal lines, and the number of the oxygen interfaces is two, namely the oxygen interface A and the oxygen interface B;
a compressed air system: the compressed air system comprises a pressure air interface, a flow instrument A, a pressure transmitter B, an adjusting controller B, a control valve B and a compressed air bag which are sequentially connected through pipelines, the adjusting controller B and the pressure transmitter B are connected with a computer control display through signal lines, and the number of the pressure air interfaces is two and is respectively the pressure air interface A and the pressure air interface B;
temperature measurement system: the temperature measurement system comprises a temperature measurement couple, a field display and a computer control display which are sequentially connected, wherein the temperature measurement couple is provided with three temperature measurement points, namely three temperature measurement points are connected with the temperature measurement couple, namely a temperature measurement point A, a temperature measurement point B and a temperature measurement point C;
an imaging system: the imaging system comprises a peephole and a camera, and the peephole and the camera are connected with a computer for controlling display.
The embodiment of the application can also adopt the following technical scheme:
in the above oxygen lance system for rapidly recovering furnace conditions, further, the oxygen lance body includes an inner tube and an outer tube, the head of the inner tube is inserted into the outer tube, the temperature measuring point a, the temperature measuring point B and the temperature measuring point C are arranged on the head of the inner tube, the air pressure port a and the air pressure port B are arranged on the outer tube, compressed air flows between the inner tube and the outer tube, the temperature measuring couple, the oxygen port a and the oxygen port B are arranged at the tail of the inner tube, oxygen flows through the inner tube, and the peephole and the camera are both arranged at the tail end of the inner tube.
One or more technical schemes provided in the embodiment of the application have at least the following beneficial effects:
1. the utility model discloses the spray volume of close control compressed air, oxygen utilizes to pour into compressed air outside the oxygen pipe and forms the protection, forms the protection to the oxygen pipe, reduces the possibility that the oxygen rifle burns out.
2. The utility model discloses a four aspects of pressure, flow, temperature, video are monitored, have scientific foundation to spouting compressed air, the oxygen in the furnace hearth, can be more audio-visual through the video with know the combustion operating condition who observes in the furnace hearth.
3. The utility model discloses the operation adopts signal feedback remote operation, and is safe convenient more, has resumeed the rate of a furnace to the blast furnace and has played fine fulcrum effect, can practice thrift a large amount of manpowers, material resources, and it is environmental protection more than original iron notch jetting, coal gas derivation mode.
4. The utility model discloses a medium flow control, temperature measurement point monitoring, compressed air protection guarantee that the oxygen pipe normally blows, can effectively activate the hearth to effectively avoid causing the wind gap cover to cause the vicious accident of scaling loss after the iron face rises, effectively improve the operating efficiency, more have the scientificity.
Drawings
Technical solutions of embodiments of the present application will be described in further detail below with reference to the accompanying drawings, but it should be understood that these drawings are designed for illustrative purposes only and thus do not limit the scope of the present application. Furthermore, unless otherwise indicated, the drawings are intended to be illustrative of the structural configurations described herein and are not necessarily drawn to scale.
FIG. 1 is a process flow diagram for a lance.
FIG. 2 is a schematic view of the structure of the lance body.
In the figure:
1. temperature measuring points A,2, temperature measuring points B,3, temperature measuring points C,4, nozzles, 5, a furnace wall, 6, an outer pipe, 7, control valves A,8, control valves B,9, an oxygen point valve box, 10, a compressed air bag, 11, adjusting controllers A,12, adjusting controllers B,13, a computer control display, 14, pressure transmitters A,15, pressure transmitters B,16, oxygen interfaces A,17, compressed air interfaces A,18, peepholes, 19, a camera, 20, an inner pipe, 21, a temperature measuring thermocouple, 22, a field display, 23, compressed air interfaces B,24, oxygen interfaces B,25, flow meters A,26 and a flow meter B.
Detailed Description
In order to better understand the technical scheme, the technical scheme is described in detail in the following with reference to the attached drawings of the specification and specific embodiments.
Example 1
As shown in the attached figure 1 of the specification, a solid filling line is a signal line, a hollow line is a field pipeline, two oxygen interfaces and two compressed air interfaces are respectively arranged on the oxygen lance, the pipeline and the signal line are only connected at one position for illustration, and actually, the two oxygen interfaces and the two compressed air interfaces are both connected by the pipeline and the signal line.
The embodiment comprises an oxygen supply system, a compressed air system, a temperature measurement system, an imaging system and an integrated control system.
The oxygen supply system comprises an oxygen point valve box 9, a control valve 7, an adjusting controller 11, a pressure transmitter 14, a flowmeter 26, an oxygen interface A16, an oxygen interface B24 and an oxygen lance body which are connected in sequence. The oxygen is delivered by the oxygen point valve box 9 → the control valve 7 → the adjusting controller 11 → the pressure transmitter 14 → the flow instrument 26 → the oxygen interface A16 and the oxygen interface B24 → the nozzle 4, and the medium flow is output to the computer control display 13 by the pressure transmitter A14 and the adjusting controller A11.
The compressed air system comprises a compressed air bag 10, a control valve 8, a regulating controller 12, a pressure transmitter 15, a flow meter 25, a compressed air interface A17, a compressed air interface B23 and an oxygen lance body. The compressed air is delivered by the compressed air bag 10 → the control valve 8 → the regulator controller 12 → the pressure transmitter 15 → the flowmeter 25 → the compressed air interface a17 and the compressed air interface B23, and the flow rate is outputted to the computer control display 13 by the pressure transmitter 15 and the regulator controller 12.
The temperature measuring system comprises an oxygen lance body, a temperature measuring point, a temperature measuring thermocouple 21, an on-site display 22 and a computer control display 13; the temperature signal is displayed by a temperature measuring point A1, a temperature measuring point B2, a temperature measuring point C3 → a temperature measuring thermocouple 21 → an on-site display 22 → a computer control display 13.
The imaging system comprises an oxygen lance body, a peephole 18, a camera 19 and a computer control display 13; the peephole 18 and the camera 19 are both connected with the computer control display 13.
The integrated control system includes: computer control display 13 and regulation controller A11, regulation controller B12, pressure transmitter A14, pressure transmitter B15, peep hole 18, camera 19, on-site display 22 that are connected with computer control display 13.
The working process comprises the following steps:
when the operation is started, oxygen is injected from the oxygen point valve box 9 → the control valve A7 → the regulator a11 → the pressure transmitter a14 → the oxygen interface a16, the oxygen interface B24 → the nozzle 4. The compressed air is compressed by the compressed air bag 10 → the control valve B8 → the regulating controller B12 → the pressure transmitter B15 → the compressed air interface A17, the compressed air interface B23 → the nozzle 4.
The oxygen supply system and the compressed air system are connected to the inlet end of the integrated control system firstly, are connected with the oxygen lance body through the computer control display 13, and are used for controlling the proportion of oxygen and compressed air, so that the oxygen lances are sprayed into the hearth, the combustion condition of the front section of the oxygen lances is observed by the imaging system, the burning loss degree and the length change of the oxygen lances are detected by the measuring system, and the basis is provided for remote operation and adjustment of operators.
The front end of the oxygen lance is sprayed with a certain proportion of air-oxygen mixed gas through a nozzle 4 to support combustion with crossties, coke and iron slag in a hearth to form a certain convolution area, and a peephole 18 and a camera 19 at the tail end display the combustion state and transmit the combustion state to a computer control display 13.
When the change of the convolution area is too large or too small, the flow and the pressure of oxygen and air pressure are controlled by the adjusting controller A11 and the adjusting controller B12, so that the purposes of not burning the oxygen lance and heating the furnace hearth are achieved, when the burning loss of the temperature measuring point reaches the 1 st point, the convolution area is proved to retreat to the edge of the furnace wall, the oxygen supply is stopped, the melted iron slag is proved to exceed the central line of the iron notch, the tapping condition is met, and the iron can be tapped normally.
Example 2
As shown in the attached figure 2 of the specification, an oxygen lance body in the system is formed by inserting and overlapping pipelines with two thicknesses, namely an inner pipe and an outer pipe, the inner pipe is an imaging channel, oxygen and compressed air flow between the outer pipe and the inner pipe, the tail part of the oxygen lance body is in semi-sealed point-like injection, three temperature measuring points are arranged, namely a temperature measuring point A1, a temperature measuring point B2 and a temperature measuring point C3, and one point at the top end part is a temperature measuring thermocouple 21. The upper part is an oxygen interface A16, an oxygen interface B24, a compressed air interface A17 and a compressed air interface B23.
Example 3
The embodiment comprises an oxygen supply system, a compressed air system, a temperature measurement system, an imaging system and an oxygen lance body.
Oxygen system includes oxygen interface, flowmeter B26, pressure transmitter A14, regulation controller A11, control flap A7 and the oxygen point valve box 9 that connects gradually through the pipeline, regulation controller A11 and pressure transmitter A14 show 13 passing signal line connections with computer control, the quantity of oxygen interface is two, is oxygen interface A16 and oxygen interface B24 respectively.
The compressed air system comprises a compressed air interface, a flowmeter A25, a pressure transmitter B15, an adjusting controller B12, a control valve B8 and a compressed air bag 10 which are sequentially connected through pipelines, the adjusting controller B12 and the pressure transmitter B15 are connected with a computer control display 13 through signal lines, and the number of the compressed air interfaces is two and respectively a compressed air interface A17 and a compressed air interface B23.
The temperature measurement system comprises three temperature measurement points, namely a temperature measurement point A1, a temperature measurement point B2 and a temperature measurement point C3, a temperature measurement couple 21, a field display 22 and a computer control display 13 which are connected in sequence.
The imaging system comprises a peephole 18 and a camera 19, and the peephole 18 and the camera 19 are both connected with the computer control display 13.
The oxygen lance body comprises an inner tube 20 and an outer tube 6, the head of the inner tube 20 is inserted into the outer tube 6, a temperature measuring point A1, a temperature measuring point B2 and a temperature measuring point C3 are arranged on the head of the inner tube 20, a pressure-air interface A17 and a pressure-air interface B23 are arranged on the outer tube 6, a temperature measuring couple 21, an oxygen interface A16 and an oxygen interface B24 are arranged at the tail of the inner tube 20, and a peephole 18 and a camera 19 are arranged at the tail end of the inner tube 20.
The working process is as follows: when the oxygen lance starts to work, oxygen in the oxygen point valve box 9 sequentially passes through the control valve A7, the adjusting controller A11, the pressure transmitter A14 and the flow meter B26 and is divided into two parts, the two parts enter the oxygen lance body through the oxygen interface A16 and the oxygen interface B24 and enter a furnace hearth through the nozzle 4 of the oxygen lance body, and the adjusting controller A11 and the pressure transmitter A14 are connected with the computer control display 13 through signal lines.
Compressed air in the compressed air bag 10 is divided into two parts through a control valve B8, an adjusting controller B12, a pressure transmitter B15 and a flow meter A25 in sequence, enters the oxygen lance body through a pressure air interface A17 and a pressure air interface B23, enters a furnace cylinder through a nozzle 4 of the oxygen lance body, and the adjusting controller B12 and the pressure transmitter B15 are connected with a computer control display 13 through signal lines.
The technical scheme in the embodiment of the application at least has the following technical effects or advantages:
to sum up, the utility model provides an oxygen lance system capable of rapidly recovering furnace conditions.
The above embodiments are described in detail, but the above description is only for the preferred embodiments of the present invention, and should not be construed as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.

Claims (2)

1. An oxygen lance system capable of quickly recovering furnace conditions is characterized in that: the oxygen lance system capable of rapidly recovering furnace conditions comprises:
oxygen supply system: the oxygen supply system comprises an oxygen interface, a flow meter B, a pressure transmitter A, an adjusting controller A, a control valve A and an oxygen point valve box which are sequentially connected through a pipeline, wherein the adjusting controller A and the pressure transmitter A are connected with a computer control display through signal lines, and the number of the oxygen interfaces is two, namely the oxygen interface A and the oxygen interface B;
a compressed air system: the compressed air system comprises a pressure air interface, a flow instrument A, a pressure transmitter B, an adjusting controller B, a control valve B and a compressed air bag which are sequentially connected through pipelines, the adjusting controller B and the pressure transmitter B are connected with a computer control display through signal lines, and the number of the pressure air interfaces is two and is respectively the pressure air interface A and the pressure air interface B;
temperature measurement system: the temperature measurement system comprises a temperature measurement couple, a field display and a computer control display which are sequentially connected, wherein the temperature measurement couple is provided with three temperature measurement points, namely three temperature measurement points are connected with the temperature measurement couple, namely a temperature measurement point A, a temperature measurement point B and a temperature measurement point C;
an imaging system: the imaging system comprises a peephole and a camera, and the peephole and the camera are connected with a computer for controlling display.
2. The fast recovery furnace condition oxygen lance system as claimed in claim 1, wherein: the oxygen lance body comprises an inner tube and an outer tube, the head of the inner tube is inserted into the outer tube, a temperature measuring point A, a temperature measuring point B and a temperature measuring point C are arranged on the head of the inner tube, a pressure air interface A and a pressure air interface B are arranged on the outer tube, compressed air flows between the inner tube and the outer tube, a temperature measuring couple, an oxygen interface A and an oxygen interface B are arranged at the tail of the inner tube, oxygen flows through the inner tube, and a peephole and a camera are arranged at the tail end of the inner tube.
CN202222944105.5U 2022-11-04 2022-11-04 Oxygen lance system capable of rapidly recovering furnace condition Active CN218786638U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202222944105.5U CN218786638U (en) 2022-11-04 2022-11-04 Oxygen lance system capable of rapidly recovering furnace condition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202222944105.5U CN218786638U (en) 2022-11-04 2022-11-04 Oxygen lance system capable of rapidly recovering furnace condition

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CN218786638U true CN218786638U (en) 2023-04-04

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