CN203238299U - Simple AOD (Argon Oxygen Decarburization) furnace top gun system - Google Patents
Simple AOD (Argon Oxygen Decarburization) furnace top gun system Download PDFInfo
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- CN203238299U CN203238299U CN 201320092695 CN201320092695U CN203238299U CN 203238299 U CN203238299 U CN 203238299U CN 201320092695 CN201320092695 CN 201320092695 CN 201320092695 U CN201320092695 U CN 201320092695U CN 203238299 U CN203238299 U CN 203238299U
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- top rifle
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Abstract
The utility model aims at providing a simple AOD (Argon Oxygen Decarburization) furnace top gun system which comprises a gas supply system and a control system, wherein the gas supply system comprises a flange, a pressure gauge, a filter, a temperature transmitter, a flow transmitter, an inlet pressure transmitter, an adjusting valve, a pneumatic ball valve, a one-way valve, an elbow, a top gun pressure transmitter and a top gun head; the control system comprises an inlet pressure gauge, a top gun pressure gauge, a top gun PID (Piping and Instruments Diagram) adjusting instrument, a top gun flow integrating instrument, a top gun ball valve switch, a power supply switch and a control platform. By utilizing the improved AOD furnace top gun system provided by the utility model, all functions of advanced equipment are achieved in the simplest mode, the production cost and the manufacturing cost of the system are lowered, and the complexity degree of system operation is decreased.
Description
Technical field
The utility model belongs to the casting equipment field, and a kind of brief AOD furnace roof gun system is provided especially.
Background technology
1978, the rugged factory of star of Japanese Datong District special steel company compared according to heat and the relative cost that the reaction of different elements and oxygen produces, and found to only have carbon to generate and reoxidize behind the CO to be CO
2The time, its reaction heat is the highest, and relative cost is minimum.This is that Si in the molten steel, Mn, Cr, Al, Fe oxidation results are not so good as.So invented the AOD-CB(top blast at the 20tAOD refining furnace) technique, to compare with traditional technology, heat-up rate is brought up to 17.5 ℃/min by 7 ℃/min.CRE improves 5%, and decarbonization rate is brought up to 0.087%/min by 0.055%/min, and power consumption reduces 78kWh/t, and FeSi reduces 25%, reduces 11min tap to tap time, and furnace life reaches 235 stoves.Japan namely carries out multiple blowing technology toward the friendly metal Wakayama 90t AOD of factory in nineteen eighty-two, and refining time shortens 20min, and FeSi drops to 7.5kg/t, and the argon consumption drops to 11.3Nm3/t.Because the advantage that top blowing oxygen is outstanding, newly-built or transform AOD all the process means of top blast as indispensability.
1993, the 20tAOD argon oxygen decarburization converter of gondola Italfond company was installed the telescoping top lance system at water-cooled gas sampling petticoat pipe.The oxygen of supplying with top oxygen gun is by a fixing pipeline and connects scalable petticoat pipe and the flexible pipe of top rifle arrival top rifle itself.And adopt a kind of vertical guide mechanism with windlass to come the lifting top oxygen gun.
Top lance system mainly contains following several types and characteristics according to the form that adopts the top gun apparatus:
1, the Lavalle single hole or the three hole spray guns that adopt of large-scale metallurgical AOD refining furnace.Be used for molten steel in the use of high-carbon regions carbon rejection process.Its energy fast reducing carbon content of molten steel offers the enough heats of molten steel simultaneously, alleviates the pressure of first refining equipment in early stage, and this is very applicable to large-scale body of heater.But because this top gun apparatus need dispose water-cooling system, suspension, travel mechanism etc., complex structure, maintenance difficulties is large, and equipment manufacturing cost is high, and the reasons such as the certain factory building height of needs are only suitable for adopting on the AOD of the part producer stove.Simultaneously, because its air supply intensity is large, molten steel produces splash easily, needs larger heat size ratio.
2, the currently used top blast device of other form AOD stove, in stove, to stretch into top rifle (simple heat-resistance stainless steel pipe) by dust excluding hood, provide blowing oxygen by a metallic hose, the lifting of top rifle is controlled in dependence one with the vertical liner of elevator mechanism.Compare with large-size water-cooling top rifle, this device is greatly simplified, but still needs certain facility investment and maintenance service.
The deficiency of at present AOD refining furnace roof rifle design has:
1, hoisting appliance and magnetism servo-electric motor water-cooling device fabrication more complicated, top rifle rifle head (Lavalle single hole or three hole spray guns) need special process to make;
2, maintenance workload is larger, and the processing more complicated that goes wrong is if water cooling plant breaks down (leaking) then can have an accident.
3, can increase simultaneously the complexity of other support equipment (such as Controlling System).
4, manufacturing cost is high.
Summary of the invention
The utility model redesigns AOD furnace roof gun system from three different aspects, the complex apparatus such as former top lance system hoisting appliance and water-cooling system have been saved, reduced the complexity of Controlling System, increased the safe reliability of equipment, mainly contain: (1) top rifle is directly installed on the AOD furnace crown, rifle head and the together loss of AOD furnace crown refractory materials; (2) adopt metallic hose directly to be connected with top rifle rifle head, convenient and practical.(3) directly use regulation meter to control flow, pressure and the temperature of gas distributing system valve opening and then realization control and detected gas.
The utility model specifically provides a kind of brief AOD furnace roof gun system, it is characterized in that: described top lance system comprises gas distributing system and Controlling System, wherein, gas distributing system is monitoring and the system that controls gas flow, and Controlling System is the service platform that each valve mutually moves and shows the various surveying instrument measuring results of integrating in a series of control valve frame systems:
Gas distributing system comprises flange 1, tensimeter 2, strainer 3, temperature transmitter 4, flow transmitter 5, inlet pressure transmitter 6, variable valve 7, pneumatic ball valve 8, check valve 9, elbow 10, top rifle pressure unit 11 and top rifle rifle head 12;
One end of described flange 1 links to each other with tensimeter 2, the other end of tensimeter 2 links to each other with strainer 3, the other end of strainer 3 links to each other with temperature transmitter 4, temperature transmitter 4 the other ends link to each other with flow transmitter 5, flow transmitter 5 the other ends link to each other with inlet pressure transmitter 6, inlet pressure transmitter 6 the other ends link to each other with variable valve 7, variable valve 7 the other ends link to each other with pneumatic ball valve 8, pneumatic ball valve 8 the other ends link to each other with check valve 9, check valve 9 the other ends link to each other with top rifle pressure unit 11 by elbow 10, and the other end top rifle rifle head 12 of top rifle pressure unit 11 links to each other;
Controlling System includes mouth pressure table 21, top rifle tensimeter 22, top rifle PID adjusting apparatus 23, top rifle flow integrator 24, top rifle ball valve switch 25, power switch 26 and supervisory control desk 28;
Described inlet pressure table 21 and inlet pressure transmitter 6 are connected by wire; Top rifle tensimeter 22 and top rifle pressure unit 11 are connected by wire; Top rifle PID adjusting apparatus 23 and variable valve 7 are connected by wire; Top rifle flow integrator 24 and temperature transmitter 4, flow transmitter 5 and inlet pressure transmitter 6 link to each other by wire; Top rifle ball valve switch 25 and pneumatic ball valve 8 are connected by wire; Inlet pressure table 21, top rifle tensimeter 22, top rifle PID adjusting apparatus 23, top rifle flow integrator 24, top rifle ball valve switch 25 and power switch 26 are installed on the supervisory control desk 28.The required main technique operation of carrying out of operator all can be carried out at supervisory control desk 28.
Brief AOD furnace roof gun system described in the utility model is characterized in that: be provided with keyhole 27 on supervisory control desk 28 tops, to make things convenient for the maintenance of panel.
Brief AOD furnace roof gun system described in the utility model is characterized in that: described top rifle ball valve switch 25 and power switch 26 are arranged in the same horizontal line, power on and valve switch with the convenient supervisory control desk of selecting.
Brief AOD furnace roof gun system described in the utility model is characterized in that: be connected by metallic hose 13 between described top rifle pressure unit 11 and the top rifle rifle head 12.
By the improved AOD furnace roof of the utility model gun system, use the simplest mode to realize the repertoire of sophisticated equipment: to reduce system's manufacturing cost, the complexity of simplified system operation.
The AOD refining furnace top rifle that the utility model provides, simple in structure on device hardware, facility investment is few, is received by numerous Small Foundries, Metallurgical Factory easily.In use simultaneously, can also effectively solve in the use procedure of AOD refining furnace the invar water temp and cross and hang down need adding heat-generating agent, the problem that material cost is too high, this advantage of system is as follows:
(1), facility investment is few, simple to operate, can be accepted by most of middle-size and small-size cast steel enterprises and Metallurgical Factory;
(2), effectively solve low capacity AOD refining furnace without external heat source, liquid steel temperature is crossed the low problem that needs to add a large amount of heat-generating agents, reduces material cost.
(3), shorten the heat raising lining life, raising process gas utilization ratio, the material cost such as anti-material, gas during further reduction is produced.
(4), solve carbon steel, low alloy steel invar water temp is not enough, causes the little problem of AOD technique practicality.The AOD refining techniques is really spread to this field, enlarge the range of application of AOD refinery practice.
Description of drawings
Fig. 1 top lance system gas distributing system structure iron;
Fig. 2 top lance system Controlling System structure iron.
Embodiment
Top lance system gas distributing system structure iron as shown in Figure 1, gas distributing system is monitoring and the system that controls gas flow, comprises flange 1, tensimeter 2, strainer 3, temperature transmitter 4, flow transmitter 5, inlet pressure transmitter 6, variable valve 7, pneumatic ball valve 8, check valve 9, elbow 10, top rifle pressure unit 11 and top rifle rifle head 12;
Described flange 1 one ends link to each other with admission passage, the other end links to each other with tensimeter 2, the other end of tensimeter 2 links to each other with strainer 3, the other end of strainer 3 links to each other with temperature transmitter 4, temperature transmitter 4 the other ends link to each other with flow transmitter 5, flow transmitter 5 the other ends link to each other with inlet pressure transmitter 6, inlet pressure transmitter 6 the other ends link to each other with variable valve 7, variable valve 7 the other ends link to each other with pneumatic ball valve 8, pneumatic ball valve 8 the other ends link to each other with check valve 9, check valve 9 the other ends link to each other with top rifle pressure unit 11 by elbow 10, and an end of top rifle pressure unit 11 links to each other with top rifle rifle head 12 by metallic hose 13;
Controlling System is the service platform that each valve mutually moves and shows the various surveying instrument measuring results of integrating in a series of control valve frame systems, includes mouth pressure table 21, top rifle tensimeter 22, top rifle PID adjusting apparatus 23, top rifle flow integrator 24, top rifle ball valve switch 25, power switch 26, keyhole 27 and supervisory control desk 28; Wherein inlet pressure table 21, top rifle tensimeter 22, top rifle PID adjusting apparatus 23, top rifle flow integrator 24, top rifle ball valve switch 25 and power switch 26 are installed on the supervisory control desk 28, and supervisory control desk 28 tops are provided with keyhole 27, to make things convenient for the maintenance of panel.
Described inlet pressure table 21 and inlet pressure transmitter 6 are connected by wire; Top rifle tensimeter 22 and top rifle pressure unit 11 are connected by wire; Top rifle PID adjusting apparatus 23 and variable valve 7 are connected by wire; Top rifle flow integrator 24 and temperature transmitter 4, flow transmitter 5 and inlet pressure transmitter 6 link to each other by wire; Top rifle ball valve switch 25 and pneumatic ball valve 8 are connected by wire.
When AOD top gun apparatus was worked, oxygen was to be blown in the body of heater by top rifle rifle head 12.Operator control the aperture of flow, pressure and valve by supervisory control desk, detect, monitor and finally control gas flow, the pressure that vavle shelf passes through by gas flow provided thereon, pressure and temperature signaling traffic meter, pressure transmitter and temperature sensor.
The function declaration of gas distributing system and Controlling System assembly is shown in table 1,2.
The explanation of table 1 gas distributing system assembly function
| Assembly | Function declaration |
| Flange | Be connected with admission passage |
| Tensimeter | Show gas distributing system inlet mouth pressure |
| Strainer | Impurity in filter pipeline and the gas |
| Temperature transmitter | The gas-monitoring temperature, and temperature is sent into instrument carry out integrating |
| Flow transmitter | The gas-monitoring flow, and flow is sent into instrument carry out integrating |
| The inlet pressure transmitter | The monitoring inlet gas pressure, and pressure is sent into instrument carry out integrating |
| Variable valve | The adjusting gas flow size |
| Pneumatic ball valve | Realize gas piping gas break-make |
| Check valve | The control gas unidirectional flows |
| Elbow | Connect gas piping |
| Top rifle pressure unit | Monitoring exit gas pressure |
| Top rifle rifle head | Link to each other with the AOD furnace body |
The explanation of table 2 Controlling System assembly function
| Project | Function declaration |
| The inlet pressure table | Show the gas distributing system inlet pressure |
| Top rifle tensimeter | Show gas distributing system top rifle pressure |
| Top rifle PID adjusting apparatus | Given regulating valve flow signal |
| Top rifle flow integrator | Carry out temperature and pressure compensation and show oxygen integrated flow and instantaneous delivery etc. |
| Top rifle ball valve switch | Control gas distributing system pneumatic ball valve switch |
| Power switch | Device power supply (DPS) |
| Keyhole | Panel service key hole |
Above-described embodiment only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the personage who is familiar with technique can understand content of the present utility model and according to this enforcement, can not limit protection domain of the present utility model with this.All equivalences of doing according to the utility model spirit change or modify, and all should be encompassed within the protection domain of the present utility model.
Claims (4)
1. brief AOD furnace roof gun system, it is characterized in that: described top lance system comprises gas distributing system and Controlling System, wherein:
Gas distributing system comprises flange (1), tensimeter (2), strainer (3), temperature transmitter (4), flow transmitter (5), inlet pressure transmitter (6), variable valve (7), pneumatic ball valve (8), check valve (9), elbow (10), top rifle pressure unit (11) and top rifle rifle head (12);
Described flange (1) one end links to each other with tensimeter (2), the other end of tensimeter (2) links to each other with strainer (3), the other end of strainer (3) links to each other with temperature transmitter (4), temperature transmitter (4) the other end links to each other with flow transmitter (5), flow transmitter (5) the other end links to each other with inlet pressure transmitter (6), inlet pressure transmitter (6) the other end links to each other with variable valve (7), variable valve (7) the other end links to each other with pneumatic ball valve (8), pneumatic ball valve (8) the other end links to each other with check valve (9), check valve (9) the other end links to each other with top rifle pressure unit (11) by elbow (10), and the other end of top rifle pressure unit (11) links to each other with top rifle rifle head (12);
Controlling System includes mouth pressure table (21), top rifle tensimeter (22), top rifle PID adjusting apparatus (23), top rifle flow integrator (24), top rifle ball valve switch (25), power switch (26) and supervisory control desk (28);
Described inlet pressure table (21) is connected by wire with inlet pressure transmitter (6); Top rifle tensimeter (22) is connected by wire with top rifle pressure unit (11); Top rifle PID adjusting apparatus (23) is connected by wire with variable valve (7); Top rifle flow integrator (24) links to each other by wire with temperature transmitter (4), flow transmitter (5) and inlet pressure transmitter (6); Top rifle ball valve switch (25) is connected by wire with pneumatic ball valve (8); Inlet pressure table (21), top rifle tensimeter (22), top rifle PID adjusting apparatus (23), top rifle flow integrator (24), top rifle ball valve switch (25) and power switch (26) are installed on the supervisory control desk (28).
2. according to the described brief AOD furnace roof gun system of claim 1, it is characterized in that: be provided with keyhole (27) on supervisory control desk (28) top, to make things convenient for the maintenance of panel.
3. according to the described brief AOD furnace roof gun system of claim 1, it is characterized in that: described top rifle ball valve switch (25) and power switch (26) are arranged in the same horizontal line.
4. according to the arbitrary described brief AOD furnace roof gun system of claim 1～3, it is characterized in that: be connected by metallic hose (13) between described top rifle pressure unit (11) and the top rifle rifle head (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320092695 CN203238299U (en) | 2013-02-26 | 2013-02-26 | Simple AOD (Argon Oxygen Decarburization) furnace top gun system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320092695 CN203238299U (en) | 2013-02-26 | 2013-02-26 | Simple AOD (Argon Oxygen Decarburization) furnace top gun system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203238299U true CN203238299U (en) | 2013-10-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320092695 Expired - Lifetime CN203238299U (en) | 2013-02-26 | 2013-02-26 | Simple AOD (Argon Oxygen Decarburization) furnace top gun system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203238299U (en) |
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2013
- 2013-02-26 CN CN 201320092695 patent/CN203238299U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131016 |
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| CX01 | Expiry of patent term |