CN103014238B - AOD converter side blowing gun pipeline system flow control method - Google Patents
AOD converter side blowing gun pipeline system flow control method Download PDFInfo
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- CN103014238B CN103014238B CN201110280890.2A CN201110280890A CN103014238B CN 103014238 B CN103014238 B CN 103014238B CN 201110280890 A CN201110280890 A CN 201110280890A CN 103014238 B CN103014238 B CN 103014238B
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000007664 blowing Methods 0.000 title abstract description 6
- 230000001105 regulatory effect Effects 0.000 claims abstract description 40
- 230000001276 controlling effect Effects 0.000 claims description 31
- 230000033228 biological regulation Effects 0.000 abstract description 7
- 239000007789 gas Substances 0.000 description 24
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 238000003723 Smelting Methods 0.000 description 4
- 229910052786 argon Inorganic materials 0.000 description 4
- 230000004907 flux Effects 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 230000010354 integration Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000004069 differentiation Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- VVTSZOCINPYFDP-UHFFFAOYSA-N [O].[Ar] Chemical compound [O].[Ar] VVTSZOCINPYFDP-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000013341 scale-up Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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Abstract
The present invention discloses an AOD converter side blowing gun pipeline system flow control method, which comprises the following steps: 1, arranging a total pipeline pressure transmitter on a total pipeline, and measuring the actual total pipeline pressure P total in the total pipeline; and 2, comparing the actual pressure P branch of one branch pipeline to preset pressure P0 of the of branch pipeline, wherein the condition comprises that: a, flow control regulation is performed if the P branch is less than or equal to 1.2 P0, and b, an opening degree of a flow regulation valve is regulated according to a preset pressure regulation value if the P branch is more than 1.2 P0, and the flow control regulation in the condition a is performed after achieving the preset time. According to the AOD converter side blowing gun pipeline system flow control method, the pressure of the total pipeline is adopted to carry out temperature and pressure compensation on the branch pipeline air flow, and the two control manners such as flow regulation and pressure regulation are adopted, such that the smooth air pipeline is easily achieved, and normal operation of the AOD converter side blowing gun pipeline system can be ensured.
Description
Technical field
The present invention relates to the Flow-rate adjustment control of gas, more specifically, is a kind of flow control methods of AOD converter cross air blow rifle piping system.
Background technology
AOD (argon oxygen decarburization) converter side-blown air pressure gun has side-blown stirring, oxygen blast function.In application, side-blown gas divides multi-wad join to furnace wall.Shielding gas comprises nitrogen and argon gas, can be switched by the trip valve on house steward.Be illustrated in figure 1 a kind of control principle schematic diagram of the AOD converter cross air blow rifle piping system that comprises seven pipelines.The shielding gas of each point of pipeline is respectively by such as orifice plate differential pressure transmitter of pressure unit PT(etc.), such as hot resistance of temperature sensor TE(etc.), flow regulating and controlling valve CV Comprehensive Control; nitrogen and argon gas by flowing into house steward 10 after trip valve SV, then enter each point of pipeline 11,12..., 17 respectively.The gas flow of each point of pipeline, utilizes temperature and pressure compensation mode to regulate.Utilize the flow after set(ting)value flow and temperature and pressure compensation between each pipeline to compare, the then output aperture of adjust flux valve CV, to regulate the gas flow of each point of pipeline output.
Conventionally, temperature and pressure compensation can utilize PID(ratio, integration, differential) control method carrys out the output aperture of adjust flux adjusting control valve.PID control method is control device ripe in industry, and realizes by various PID controllers.Particularly, PID controller is made up of ratio unit P, integral unit I and differentiation element D.PID controller is mainly applicable to substantially linear and kinetic characteristic time invariant system.PID controller is made up of ratio unit (P), integral unit (I) and differentiation element (D).Its input e (t) is u (t)=kp (e (t)+1/TI ∫ e (t) dt+TD*de (t)/dt) with the pass of output u (t), in formula, the bound of integration is respectively 0 and t, and therefore its transport function is: G (s)=U (s)/E (s)=kp (1+1/ (TI*s)+TD*s).Wherein kp is scale-up factor; TI is integration time constant; TD is derivative time constant.In flow control, can pass through PID controller input feedback amount, and carry out Flow-rate adjustment by the output aperture of adjust flux adjusting control valve.
Particularly, referring to Fig. 2, carry out each piping flow adjusting schematic diagram in cross air blow rifle piping system for the existing PID of utilization controls, in figure, only show the situation of a point of pipeline, all identical for the Flow-rate adjustment control of other point of pipeline.
As shown in the figure, first, PID controller according to input not compensating flowrate set(ting)value, output valve aperture analog quantity A, flow regulating and controlling valve CV receives after this analog quantity, and control valve aperture is set.
Then, when system is during in steady operational status, the pressure reduction dP(that utilizes the output of point pipeline aperture plate pressure difference transmitter (not shown) is the pressure difference value of check point before and after orifice differential pressure transmitter aperture plate), point pipeline pressure P of pressure unit PT output and the actual temperature T of hot resistance output in point pipeline, calculate the flow under standard state:
In formula, Q
1for not compensating front flow, k is orifice plate flow design coefficient, and dP is the differential pressure that the orifice plate of orifice differential pressure transmitter collects, and ρ is the gas density under design conditions.
Next, carry out the flow rate calculation after temperature and pressure compensation:
In formula, T
0for design temperature (DEG C), P
0for design pressure (MPa), P is true pressure (MPa), T be actual temperature (DEG C), Q
1for not compensating front flow, Q is the rear flow of compensation.
After calculating completes, after compensation after temperature and pressure compensation calculates, flow Q inputs to PID controller as feed back input amount, PID controller is by set(ting)value and feed back input amount Q, the valve opening amount of output after temperature and pressure compensation, and then flow regulating and controlling valve is regulated, thereby reach the object of each point of pipeline temperature and pressure compensation.
But, according to aforesaid method, once there is stopping state in the gas of a certain point of pipeline, pressure P in this point of pipeline can significantly rise, if according to the flow rate calculation after temperature and pressure compensation, perhaps actual flow can reach the flow of setting, but now divides differential pressure dP that the orifice differential pressure detector in pipeline detects decline that can certain amplitude, and the actual flow velocity detecting according to formula 1 is reducing.That is to say, line clogging is serious, and gas circuit pressure P is larger, regulates and controls according to the flow PID after temperature and pressure compensation, and the setting flow velocity of pipeline is required can be more and more lower, can aggravate so on the contrary the obstruction of pipeline.Once and AOD side-blown shielding gas stops up, the pipeline that easily will blow side of the high-temperature molten steel in AOD burns logically, causes smelting interruption, even bleed-out accident.
Therefore, need a kind of flow control methods of new AOD converter cross air blow rifle piping system, to solve the problems referred to above of existing flow control.
Summary of the invention
Object of the present invention, be the flow control methods of the AOD converter cross air blow rifle piping system that a kind of innovation is provided, to solve the problems referred to above that exist in the flow control of existing AOD converter side-blown air pressure gun, thereby safety and precise ground is according to practical situation, and in offside wind blowing gun, the gas flow of each pipeline carries out regulating and controlling.
For achieving the above object, the invention provides a kind of flow control methods of AOD converter cross air blow rifle piping system, the multiple points of pipelines that described AOD converter cross air blow rifle piping system comprises a main pipe rail and is connected with this main pipe rail, are respectively arranged with in described point of pipeline for measuring a point pipeline true pressure P
pointpoint pipeline pressure unit, for measuring a point pipeline actual temperature T
pointtemperature sensor and for regulating the flow regulating and controlling valve of point piping flow, the method comprises the following steps:
Step 1 arranges main pipe rail pressure unit on described main pipe rail, measures the main pipe rail true pressure P in main pipe rail
always;
Step 2, by a certain point of pipeline true pressure P
pointwith this point of pipeline setting pressure P
0compare,
A, if P
point≤ 1.2P
0, carry out flow control adjusting, this flow control regulates and comprises: utilize main pipe rail true pressure P
always, this point of pipeline actual temperature T
pointand the actual flow Q of this point of pipeline
0carry out temperature and pressure compensation calculating, calculate temperature and pressure compensation flow value of feedback Q
point, and utilize this temperature and pressure compensation flow value of feedback Q
pointaperture to the flow regulating and controlling valve in this point of pipeline regulates;
B, if P
point> 1.2P
0according to predetermined pressure adjustable value, aperture to flow regulating and controlling valve regulates, to utilize in the given time this predetermined pressure adjustable value, this pipeline is carried out to high pressure and blow logically, after the described scheduled time finishes, carry out flow control in above-mentioned condition a and regulate, wherein, described predetermined pressure adjustable value is not less than 1.4P
0, the described scheduled time is 1 to 5 minute.
Preferably, described this temperature and pressure compensation flow value of feedback Q that utilizes
pointaperture to the flow regulating and controlling valve in this point of pipeline regulates, and utilizes pid control mode to carry out.
Preferably, described according to predetermined pressure adjustable value, the aperture of flow regulating and controlling valve is regulated, utilize pid control mode to carry out.
Preferably, the described main pipe rail true pressure P that utilizes
always, this point of pipeline actual temperature T
pointand the actual flow Q of this point of pipeline
0carry out temperature and pressure compensation calculating, adopt following formula to carry out:
Wherein T
0for the design temperature of this point of pipeline.
Preferably, further comprising the steps of:
As in arbitrary point of pipeline point of pipeline true pressure P
pointmeet 1.6P
point≤ P
always, and described house steward's actual flow lower than house steward set flow 80% time, this AOD converter cross air blow rifle piping system out of service.
The flow control methods of AOD converter cross air blow rifle piping system of the present invention, adopt total pipe pressure for dividing a pipeline gas flow to carry out temperature and pressure compensation, and utilize Flow-rate adjustment and pressure to regulate two kinds of control modes, be conducive to the unimpeded of gas piping, ensure the safe and reliable of the normal operation of AOD converter cross air blow rifle piping system and smelting process.
Brief description of the drawings
Fig. 1 is the control principle schematic diagram of AOD converter cross air blow rifle piping system;
Fig. 2 is the existing principle schematic of utilizing temperature and pressure compensation method piping flow to be carried out to PID control;
Fig. 3 is the schematic flow sheet of the flow control methods of AOD converter cross air blow rifle piping system of the present invention;
Fig. 4 is the schematic flow sheet while adopting Flow-rate adjustment control in the flow control methods of AOD converter cross air blow rifle piping system of the present invention;
Fig. 5 is the control principle schematic diagram corresponding with flow process in Fig. 4;
Fig. 6 adopts pressure to regulate the schematic flow sheet while control in the flow control methods of AOD converter cross air blow rifle piping system of the present invention;
Fig. 7 is the control principle schematic diagram corresponding with flow process in Fig. 6.
Embodiment
Below with reference to the accompanying drawings and embodiment, step and the principle of the flow control methods to AOD converter cross air blow rifle piping system of the present invention are elaborated.For being illustrated more clearly in essence of the present invention, method and apparatus conventional in the present invention is only briefly described, and in the accompanying drawings, identical parts utilize identical label to represent.
First with reference to Fig. 1, Fig. 5 and Fig. 7, the flow control methods of AOD converter cross air blow rifle piping system of the present invention, be used to the gas flow of each pipeline in AOD converter cross air blow rifle piping system to carry out regulating and controlling, with above-mentioned similar to the explanation in Fig. 1, AOD converter cross air blow rifle piping system comprises a main pipe rail 10 and multiple points of pipelines being connected with this main pipe rail (in embodiment of the present invention be in charge of way and Fig. 1 is identical, it is seven, comprise point pipeline 11, divide pipeline 12 ... divide pipeline 17), in described point of pipeline, be respectively arranged with for measuring a point pipeline true pressure P
pointpoint pipeline pressure unit PT, for measuring a point pipeline actual temperature T
pointtemperature sensor TE and for regulating the flow regulating and controlling valve CV of point piping flow.As previously mentioned, nitrogen and argon gas by flowing into house steward 10 after trip valve SV, then enter each point of pipeline 11,12..., 17 respectively.Divide pipeline pressure unit PT, temperature sensor TE, flow regulating and controlling valve CV and trip valve SV all to select conventional components suitable in this field.In addition, arrange identically with original, in each point of pipeline, be also provided with orifice differential pressure transmitter (not shown), for utilizing the pressure reduction detecting to divide the actual flow of pipeline to calculate to its place.
As shown in Figure 3, be total schematic flow sheet of the flow control methods of AOD converter cross air blow rifle piping system of the present invention.Below in conjunction with Fig. 3 and other necessary accompanying drawings, each step is elaborated.
As shown in Figure 3, and with reference to Fig. 5,7, in step S100, main pipe rail pressure unit PT0 is set on main pipe rail 10, measures the main pipe rail true pressure P in main pipe rail 10
always.Main pipe rail pressure unit PT0 on main pipe rail 10 can select conventional pressure unit, detects the result P of measurement with the true pressure to main pipe rail
alwayscalculate for follow-up temperature and pressure compensation.
In step S200, by a certain point of pipeline true pressure P
pointwith a point pipeline setting pressure P
0compare, adopt Flow-rate adjustment control or pressure to regulate control mode to determine.Divide pipeline setting pressure P
0for the pressure of the lower point pipeline gas of normal unimpeded state.
More specifically, as shown in Figure 4, the schematic flow sheet during for the control of employing Flow-rate adjustment, as shown in the figure, in step S210, if P
point≤ 1.2P
0, carry out flow control adjusting, particularly, this flow control regulates and comprises: in step S212, utilize main pipe rail true pressure P
always, this point of pipeline actual temperature T
pointand the actual flow of this point of pipeline (not carrying out the flow before temperature and pressure compensation) Q
0carry out temperature and pressure compensation calculating, calculate temperature and pressure compensation flow value of feedback Q
point, and, in step S214, utilize this temperature and pressure compensation flow value of feedback Q
pointaperture to the flow regulating and controlling valve in this point of pipeline regulates.
Further combined with Fig. 5.For simplicity, in Fig. 5, only show the control principle that point pipeline 11 is carried out to flow control, easily understood, for the flow control principle of other point of pipeline, identical with point pipeline 11.As shown in the figure, after determining that selection flow control regulates, utilize the main pipe rail true pressure P recording
always, this point of pipeline actual temperature T
pointand the actual flow Q of this point of pipeline
0, utilize following formula to carry out temperature and pressure compensation calculating, draw the flow value of feedback Q after temperature and pressure compensation
point:
In above formula, T
0for the design temperature of this point of pipeline, i.e. the temperature of this point of pipeline under normal unimpeded state.Actual flow Q
0, can utilize the orifice differential pressure transmitter that is arranged on point pipeline according to calculating by aforementioned formula 1.
Compared with existing temperature and pressure compensation method, in the temperature and pressure compensation scheme that the present invention adopts, adopt main pipe rail true pressure P
alwaysfor a point pipeline gas flow carries out temperature and pressure compensation, and temperature parameter still adopts and is in charge of temperature.The calculating of temperature and pressure compensation and calculation of correlation (for example actual flow Q
0), can complete by ordinary method, for example, by computer, dedicated digital signal processor or PLC(PLD) chip carries out above temperature and pressure compensation calculating.
Thus, for example, once there is obstruction or Partial Blocking situation, the pressure P of this gas circuit in a certain point of pipeline (dividing pipeline 11) gas
pointsignificantly rise, but house steward's pressure P
alwayschange not quite, now by the requirement of set(ting)value, the orifice differential pressure of point pipeline aperture plate differential pressure transmitter changes little, and the actual flow velocity therefore calculating also changes not quite, thereby is conducive to the unobstructed of pipeline, prevents the phenomenon generation of line clogging aggravation.
When utilizing temperature difference compensation step of the present invention to calculate temperature and pressure compensation flow value of feedback Q
pointafter, can utilize this temperature and pressure compensation flow value of feedback Q
pointaperture to the flow regulating and controlling valve in this point of pipeline regulates.In embodiments of the present invention, utilize this temperature and pressure compensation flow value of feedback Q
pointaperture to the flow regulating and controlling valve in this point of pipeline regulates, and can utilize pid control mode to carry out.This pid control mode is identical with the pid control mode of aforementioned available technology adopting, utilizes PID controller, with flow setting value Q
0with flow value of feedback Q after the temperature and pressure compensation calculating
pointas input, after PID controller calculates, obtain the work output A of valve opening, and this work output is delivered to flow regulating and controlling valve CV in this point of pipeline, the valve opening of adjust flux adjusting control valve CV, thus reach according to flow value of feedback Q
pointthe object that the flow of this point of pipeline is regulated.Certainly, utilizing temperature and pressure compensation step of the present invention to calculate flow value of feedback Q
pointafter, also can adopt other known control program, the valve opening of flow regulating and controlling valve CV is regulated.
On the other hand, referring to Fig. 6, in step S220, if P
point> 1.2P
0, according to predetermined pressure adjustable value, the aperture of flow regulating and controlling valve is regulated, to utilize in the given time this predetermined pressure adjustable value, this pipeline is carried out to high pressure and blow logical; In step S222, after the scheduled time finishes, proceed flow control according to step S212, S214 and regulate.
Particularly, as fruit P
point> 1.2P
0time, illustrate in this point of pipeline and have latch up phenomenon to produce, can utilize higher predetermined pressure adjustable value, the aperture of flow regulating and controlling valve CV is adjusted accordingly, blow logical thereby this point of pipeline carried out to high pressure.Referring to Fig. 7, described according to predetermined pressure adjustable value, the aperture of flow regulating and controlling valve is regulated, also can utilize pid control mode to carry out.Particularly, after judgement has latch up phenomenon to produce, system switches to the pattern of utilizing pressure set points to regulate flow regulating and controlling valve, the force value of PID controller (controlling 1 referring to PID in Fig. 7) reception point pipeline pressure unit PT output and predetermined pressure adjustable value are as input, the regulation amount of output to flow regulating and controlling valve CV after PID calculates, thus reach the object of utilizing predetermined pressure adjustable value to regulate flow regulating and controlling valve CV.Conventionally, for reaching, pipeline is blown to logical object, predetermined pressure adjustable value is conventionally higher, and in a preferred embodiment of the present invention, predetermined pressure adjustable value is not less than 1.4P
0.
Utilize higher predetermined pressure to carry out high pressure to point pipeline stopping up and blow in the logical scheduled time, can again adopt the Flow-rate adjustment control mode (controlling 2 referring to PID in Fig. 7) of above-mentioned S212, S214.This be because, adopt high pressure to blow logical mode, mainly that a point pipeline to there being obstruction blows logical, after this blows logical operation, no matter whether a point pipeline latch up phenomenon is eliminated, all should get back to Flow-rate adjustment master mode, carry out the adjusting of flow regulating and controlling valve CV aperture in each point of pipeline with point piping flow, temperature conditions according to reality.The scheduled time of blowing logical operation can not be too short, and blow logical effect really to reach, and make a point piping flow reach stable, but can not be oversize, carry out Flow-rate adjustment to avoid realizing each point of pipeline according to truth.In an embodiment of the invention, this scheduled time is 1-5 minute, is preferably 3 minutes.
Referring to Fig. 3, the present invention also can preferably include step S300,, after step S100, step S200, judges in AOD converter cross air blow rifle piping system whether have fault.Particularly, as point pipeline true pressure P in arbitrary point of pipeline
pointmeet 1.6P
point≤ P
always, and described house steward's actual flow lower than house steward set flow 80% time, this AOD converter cross air blow rifle piping system out of service.As the hypotony (1.6P in point pipeline
point≤ P
always), and house steward's actual flow obviously decline (lower than house steward set flow 80%) time, illustrate that point pipeline produces comparatively serious latch up phenomenon, now should utilize and close trip valve SV, stop the supply to piping system of nitrogen and argon gas, with AOD converter cross air blow rifle piping system out of service, thereby end whole smelting process, ensure and smelt safety.
To sum up, the flow control methods of AOD converter cross air blow rifle piping system of the present invention, adopt total pipe pressure for dividing a pipeline gas flow to carry out temperature and pressure compensation, and utilize Flow-rate adjustment and pressure to regulate two kinds of control modes, be conducive to the unimpeded of gas piping, ensure the safe and reliable of the normal operation of AOD converter cross air blow rifle piping system and smelting process.
Claims (5)
1. the flow control methods of an AOD converter cross air blow rifle piping system, the multiple points of pipelines that described AOD converter cross air blow rifle piping system comprises a main pipe rail and is connected with this main pipe rail, are respectively arranged with in described point of pipeline for measuring a point pipeline true pressure P
pointpoint pipeline pressure unit, for measuring a point pipeline actual temperature T
pointtemperature sensor and for regulating the flow regulating and controlling valve of point piping flow, it is characterized in that, the method comprises the following steps:
Step 1 arranges main pipe rail pressure unit on described main pipe rail, measures the main pipe rail true pressure P in main pipe rail
always;
Step 2, by a certain point of pipeline true pressure P
pointwith this point of pipeline setting pressure P
0compare,
A, if P
point≤ 1.2P
0, carry out flow control adjusting, this flow control regulates and comprises: utilize main pipe rail true pressure P
always, this point of pipeline actual temperature T
pointand the actual flow Q of this point of pipeline
0carry out temperature and pressure compensation calculating, calculate temperature and pressure compensation flow value of feedback Q
point, and utilize this temperature and pressure compensation flow value of feedback Q
pointaperture to the flow regulating and controlling valve in this point of pipeline regulates;
B, if P
point> 1.2P
0according to predetermined pressure adjustable value, aperture to flow regulating and controlling valve regulates, to utilize in the given time this predetermined pressure adjustable value, this pipeline is carried out to high pressure and blow logically, after the described scheduled time finishes, carry out flow control in above-mentioned condition a and regulate, wherein, described predetermined pressure adjustable value is not less than 1.4P
0, the described scheduled time is 1 to 5 minute.
2. the flow control methods of AOD converter cross air blow rifle piping system according to claim 1, is characterized in that, described this temperature and pressure compensation flow value of feedback Q that utilizes
pointaperture to the flow regulating and controlling valve in this point of pipeline regulates, and utilizes pid control mode to carry out.
3. the flow control methods of AOD converter cross air blow rifle piping system according to claim 1, is characterized in that, described according to predetermined pressure adjustable value, and the aperture of flow regulating and controlling valve is regulated, and utilizes pid control mode to carry out.
4. according to the flow control methods of the AOD converter cross air blow rifle piping system described in any one in claims 1 to 3, it is characterized in that the described main pipe rail true pressure P that utilizes
always, this point of pipeline actual temperature T
pointand the actual flow Q of this point of pipeline
0carry out temperature and pressure compensation calculating, adopt following formula to carry out:
Wherein T
0for the design temperature of this point of pipeline.
5. the flow control methods of AOD converter cross air blow rifle piping system according to claim 1, is characterized in that, further comprising the steps of:
As in arbitrary point of pipeline point of pipeline true pressure P
pointmeet 1.6P
point≤ P
always, and described house steward's actual flow lower than house steward set flow 80% time, this AOD converter cross air blow rifle piping system out of service.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110280890.2A CN103014238B (en) | 2011-09-21 | 2011-09-21 | AOD converter side blowing gun pipeline system flow control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110280890.2A CN103014238B (en) | 2011-09-21 | 2011-09-21 | AOD converter side blowing gun pipeline system flow control method |
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| CN103014238B true CN103014238B (en) | 2014-06-04 |
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| CN106148727B (en) * | 2016-08-31 | 2018-10-02 | 浙江大学宁波理工学院 | Compress control method in a kind of refining furnace |
| CN107908202A (en) * | 2017-10-27 | 2018-04-13 | 中冶华天南京电气工程技术有限公司 | A kind of AOD furnace cross air blasting gun pipe ring stitches flow control methods |
| CN110331257B (en) * | 2019-06-05 | 2021-02-09 | 邢台钢铁有限责任公司 | Design method of side-blowing air gun parameters in AOD refining process |
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|---|---|---|---|---|
| JP3072412B2 (en) * | 1995-10-03 | 2000-07-31 | 株式会社イナックス | Combustion furnace combustion control system |
| CN201455255U (en) * | 2009-07-28 | 2010-05-12 | 上海优科伽瓦自动化工程有限公司 | Continuous casting argon blowing intelligent control system |
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| CN101899542A (en) * | 2010-08-05 | 2010-12-01 | 中冶南方工程技术有限公司 | Coal injection system of blast furnace |
| CN102127619A (en) * | 2010-01-13 | 2011-07-20 | 宝山钢铁股份有限公司 | RH (relative humidity) vacuum circulation control method and device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5396856B2 (en) * | 2008-12-27 | 2014-01-22 | 大同特殊鋼株式会社 | Decompression refining equipment and its operation method |
-
2011
- 2011-09-21 CN CN201110280890.2A patent/CN103014238B/en not_active Expired - Fee Related
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|---|---|---|---|---|
| JP3072412B2 (en) * | 1995-10-03 | 2000-07-31 | 株式会社イナックス | Combustion furnace combustion control system |
| CN201455255U (en) * | 2009-07-28 | 2010-05-12 | 上海优科伽瓦自动化工程有限公司 | Continuous casting argon blowing intelligent control system |
| CN102127619A (en) * | 2010-01-13 | 2011-07-20 | 宝山钢铁股份有限公司 | RH (relative humidity) vacuum circulation control method and device |
| CN201654557U (en) * | 2010-05-04 | 2010-11-24 | 长春工业大学 | Full-automatic intelligent control system of AOD furnace |
| CN101899542A (en) * | 2010-08-05 | 2010-12-01 | 中冶南方工程技术有限公司 | Coal injection system of blast furnace |
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| Title |
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| CN103014238A (en) | 2013-04-03 |
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