CN209969545U - Control system of ladle roaster - Google Patents
Control system of ladle roaster Download PDFInfo
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- CN209969545U CN209969545U CN201822096636.7U CN201822096636U CN209969545U CN 209969545 U CN209969545 U CN 209969545U CN 201822096636 U CN201822096636 U CN 201822096636U CN 209969545 U CN209969545 U CN 209969545U
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- 230000001105 regulatory effect Effects 0.000 claims abstract description 38
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 12
- 239000010959 steel Substances 0.000 claims abstract description 12
- 239000003034 coal gas Substances 0.000 claims description 32
- 238000012544 monitoring process Methods 0.000 claims description 12
- 238000004321 preservation Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000009628 steelmaking Methods 0.000 abstract description 2
- 238000005381 potential energy Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model provides a ladle roaster control system belongs to converter steelmaking field, including setting up gas regulating valve and the gas flowmeter on gas piping, set up air distribution regulating valve and the air distribution flowmeter on air distribution piping, and set up the temperature sensor on the ladle. The gas regulating valve and the air distribution regulating valve are controlled by the PLC to respectively regulate the gas amount and the air distribution amount, and the gas flow meter and the air distribution flow meter respectively monitor the gas amount and the air distribution amount in real time and transmit a gas amount signal and an air distribution amount signal to the PLC; the temperature sensor monitors the temperature of the steel ladle in real time and transmits a temperature signal to the PLC; the PLC controller automatically controls the opening and time of the gas regulating valve and the air distribution regulating valve according to the input temperature-time control curve and the received gas quantity signal, air distribution quantity signal and temperature signal. The utility model discloses the messenger can realize automatic toasting, is guaranteeing to satisfy under the prerequisite of roast package technology demand, reduces gas consumption.
Description
Technical Field
The utility model belongs to the technical field of converter steelmaking, more specifically say, relate to a ladle roaster control system.
Background
The ladle generally needs to be baked after being newly built and before being filled with molten steel, and the device for baking the ladle is called a ladle baking device. At present, most of gas valves of ladle roasters of steel plants are manually controlled, the roasting degree and time are all mastered by workers, the ladle is often excessively roasted, the roasting temperature is not uniform, the ladle roasting quality is poor, and a large amount of gas is wasted.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a ladle roaster control system can solve the improper ladle that leads to of ladle roaster control excessively toasts, bakes the technical problem that the package quality is poor, coal gas is extravagant.
In order to achieve the above object, the utility model adopts the following technical scheme: provided is a ladle roaster control system, comprising a PLC controller; the coal gas regulating valve and the coal gas flowmeter are arranged on a coal gas pipeline of the ladle roaster, the coal gas regulating valve is controlled by the PLC to regulate the coal gas quantity, and the coal gas flowmeter is used for monitoring the coal gas quantity in real time and transmitting a coal gas quantity signal to the PLC; the air distribution regulating valve and the air distribution flow meter are arranged on an air distribution pipeline of the ladle roaster, the air distribution regulating valve is controlled by the PLC to regulate the air distribution volume, and the air distribution flow meter is used for monitoring the air distribution volume in real time and transmitting an air distribution volume signal to the PLC; the temperature sensor is arranged on the steel ladle and used for monitoring the temperature of the steel ladle in real time and transmitting a temperature signal to the PLC; the PLC can control the opening and time of the gas regulating valve and the air distribution regulating valve according to an input temperature-time control curve and the received gas quantity signal, the received air distribution quantity signal and the received temperature signal.
Furthermore, the gas regulating valve has equal percentage characteristics.
Further, a pressure sensor is further arranged on a gas pipeline of the ladle roaster, the pressure sensor is used for monitoring the pressure of the gas pipeline in real time and transmitting a pressure signal to the PLC, and the PLC can control the gas regulating valve and the air distribution regulating valve to be closed when the pressure value is smaller than a preset value.
Further, the gas flowmeter can continuously monitor the gas amount after flameout and transmit a gas amount signal to the PLC, and the PLC can control the gas regulating valve and the air distribution regulating valve to be closed again when the gas amount signal is larger than zero.
Furthermore, the control system is provided with a heat preservation module, and when the ladle baking temperature of the ladle baking device reaches the ladle baking process requirement or the ladle baking time reaches the requirement, the heat preservation module is started.
Further, the PLC controller is S7-300.
The utility model provides a ladle roaster control system beneficial effect lies in:
the utility model discloses a ladle roaster control system to roast package overtime, excessively toast, causes the extravagant current situation of coal gas, utilizes automatic control technology, bale temperature real-time on-line measuring technique for the ladle roaster realizes automatic the toasting, is guaranteeing to satisfy under the prerequisite of roast package technology demand, successfully reduces gas consumption. Meanwhile, the potential energy of the equipment is excavated, the ladle roaster can be effectively controlled to adopt corresponding ladle baking control curves according to different ladle conditions, the service lives of a burner and a ladle cover of the ladle roaster are prolonged, the labor intensity of post personnel and the cost of spare parts of the ladle roaster are reduced, and a large amount of ladle baking gas is saved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a schematic view of a ladle roaster control system according to an embodiment of the present invention;
FIG. 2 is a baking schedule for different ladle types;
FIG. 3 is a baking curve of a permanent layer of a ladle;
fig. 4 is a baking curve diagram of a ladle working layer.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 4, a ladle roaster control system according to the present invention will now be described. The ladle roaster control system comprises a PLC controller; the coal gas regulating valve and the coal gas flowmeter are arranged on a coal gas pipeline of the ladle roaster, the coal gas regulating valve is controlled by the PLC to regulate the coal gas quantity, and the coal gas flowmeter is used for monitoring the coal gas quantity in real time and transmitting a coal gas quantity signal to the PLC; the air distribution regulating valve and the air distribution flow meter are arranged on an air distribution pipeline of the ladle roaster, the air distribution regulating valve is controlled by the PLC to regulate the air distribution volume, and the air distribution flow meter is used for monitoring the air distribution volume in real time and transmitting an air distribution volume signal to the PLC; the temperature sensor is arranged on the steel ladle and used for monitoring the temperature of the steel ladle in real time and transmitting a temperature signal to the PLC; and the PLC can control the opening and time of the gas regulating valve and the air distribution regulating valve according to the input temperature-time control curve and the received gas quantity signal, air distribution quantity signal and temperature signal.
The utility model provides a ladle roaster control system, the working process as follows:
the post personnel select a corresponding baking bag temperature-time control curve on a liquid crystal screen of a baking bag device control system according to the type of a steel bag and input the baking bag temperature-time control curve into a PLC (programmable logic controller), and after the baking bag begins, the PLC controls a gas regulating valve and an air distribution regulating valve according to the temperature-time control curve and automatically regulates the opening degree according to the definition of the curve; meanwhile, the temperature sensor feeds the temperature of the bale back to the PLC control system in real time, and the PLC adjusts the opening degree of the gas adjusting valve and the air distribution adjusting valve in due time according to the temperature of the bale until the temperature or the time of the bale reaches the technological requirement of the bale baking.
The embodiment of the utility model provides a ladle roaster control system to roast package overtime, excessively toast, causes the extravagant current situation of coal gas, utilizes automatic control technology, bale temperature real-time on-line measuring technique for ladle roaster realizes automatic the toasting, is guaranteeing to satisfy under the prerequisite of roast package technology demand, successfully reduces gas consumption. Meanwhile, the potential energy of the equipment is excavated, the ladle roaster can be effectively controlled to adopt corresponding ladle baking control curves according to different ladle conditions, the service lives of a burner and a ladle cover of the ladle roaster are prolonged, the labor intensity of post personnel and the cost of spare parts of the ladle roaster are reduced, and a large amount of ladle baking gas is saved.
FIG. 2 shows the baking time requirement of various steel ladles, and the control system of the steel ladle baking device automatically controls the flow of the gas regulating valve according to the requirement of FIG. 2, so as to achieve the conditions that the temperature in the ladle is more than or equal to 800 ℃, the temperature of the lower cladding is more than or equal to 50 ℃, and the water vapor is exhausted. The ladle must be continuously baked during baking, and the baking is carried out according to a small fire, a medium fire and a large fire in sequence. And after the ladle reaches the specified baking time, if the ladle is not put into use, the ladle is baked by small fire, and before the ladle is put into use, the ladle is baked by big fire for more than 1 hour.
Fig. 3 and 4 are temperature rise control curves of a permanent layer and an operating layer of a ladle, respectively, which serve as data sources of a control system of a ladle roaster.
Further, as a specific implementation of the ladle roaster control system provided by the present invention, the gas regulating valve has equal percentage characteristics and high accuracy grade.
Further, as the utility model provides a ladle roaster control system's a concrete implementation mode still is provided with pressure sensor on the gas piping of ladle roaster, and pressure sensor is used for real time monitoring gas piping's pressure to with pressure signal transmission to PLC controller, PLC controller can be when the pressure value is less than the default, gas control valve and air distribution governing valve are closed in the control. Thereby realizing the function of interlocking and closing the valve when the pressure of the gas pipeline is low.
Further, as the utility model provides a ladle roaster control system's a concrete implementation mode, gas flowmeter can be after flame-out continuously monitor the coal gas volume and with coal gas volume signal transmission to PLC controller, PLC controller can be when coal gas volume signal is greater than zero, and the explanation valve is not closed tightly, and coal gas governing valve and air distribution governing valve are closed once more in the control. Therefore, the functions of flameout detection and valve closing interlocking are realized.
Further, as the utility model provides a ladle roaster control system's a concrete implementation mode, control system have the heat preservation module, and after ladle roaster's roast package temperature reached roast package technological requirement or roast package time reached the requirement, the heat preservation module started. And after the baking temperature meets the baking process requirement or the baking time meets the requirement, the control system automatically switches to a heat preservation state to wait for the baked big ladle to be on line.
Further, as a specific embodiment of the ladle roaster control system provided by the present invention, the PLC controller is S7-300.
Further, as the utility model provides a ladle roaster control system's a concrete implementation mode, historical record and automatic report of issuing are all done to the roast package gas flow of every ladle, the air distribution flow, are convenient for on the one hand account roast package cost, provide data accumulation for the automatic model that toasts of PLC on the one hand, realize self-learning function.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. Ladle roaster control system, its characterized in that includes:
a PLC controller;
the coal gas regulating valve and the coal gas flowmeter are arranged on a coal gas pipeline of the ladle roaster, the coal gas regulating valve is controlled by the PLC to regulate the coal gas quantity, and the coal gas flowmeter is used for monitoring the coal gas quantity in real time and transmitting a coal gas quantity signal to the PLC;
the air distribution regulating valve and the air distribution flow meter are arranged on an air distribution pipeline of the ladle roaster, the air distribution regulating valve is controlled by the PLC to regulate the air distribution volume, and the air distribution flow meter is used for monitoring the air distribution volume in real time and transmitting an air distribution volume signal to the PLC; and
the temperature sensor is arranged on the steel ladle and used for monitoring the temperature of the steel ladle in real time and transmitting a temperature signal to the PLC;
the PLC can control the opening and time of the gas regulating valve and the air distribution regulating valve according to an input temperature-time control curve and the received gas quantity signal, the received air distribution quantity signal and the received temperature signal.
2. The ladle roaster control system of claim 1, wherein: the coal gas regulating valve has equal percentage characteristics.
3. The ladle roaster control system of claim 1, wherein: the gas pipeline of the ladle roaster is also provided with a pressure sensor, the pressure sensor is used for monitoring the pressure of the gas pipeline in real time and transmitting a pressure signal to the PLC, and the PLC can control the gas regulating valve and the air distribution regulating valve to be closed when the pressure value is smaller than a preset value.
4. The ladle roaster control system of claim 1, wherein: the gas flow meter can continuously monitor the gas amount after flameout and transmit a gas amount signal to the PLC, and the PLC can control the gas regulating valve and the air distribution regulating valve to be closed again when the gas amount signal is larger than zero.
5. The ladle roaster control system of claim 1, wherein: the control system is provided with a heat preservation module, and the heat preservation module is started when the ladle baking temperature of the ladle baking device reaches the ladle baking process requirement or the ladle baking time reaches the requirement.
6. The ladle roaster control system of claim 1, wherein: the PLC controller is S7-300.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822096636.7U CN209969545U (en) | 2018-12-13 | 2018-12-13 | Control system of ladle roaster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822096636.7U CN209969545U (en) | 2018-12-13 | 2018-12-13 | Control system of ladle roaster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209969545U true CN209969545U (en) | 2020-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822096636.7U Expired - Fee Related CN209969545U (en) | 2018-12-13 | 2018-12-13 | Control system of ladle roaster |
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| CN (1) | CN209969545U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111421131A (en) * | 2020-05-18 | 2020-07-17 | 芜湖新兴铸管有限责任公司 | Automatic control system for constant-temperature baking of tundish nozzle in continuous casting |
| CN111604493A (en) * | 2020-06-19 | 2020-09-01 | 武汉钢铁有限公司 | Tundish baking protection system and method |
| CN113199018A (en) * | 2021-05-12 | 2021-08-03 | 宝武集团鄂城钢铁有限公司 | Remote control method for automatically baking hot-metal ladle by using surplus blast furnace gas |
| CN113670081A (en) * | 2021-07-26 | 2021-11-19 | 洛阳盛鑫工矿设备有限公司 | Safety protection system of baking oven |
-
2018
- 2018-12-13 CN CN201822096636.7U patent/CN209969545U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111421131A (en) * | 2020-05-18 | 2020-07-17 | 芜湖新兴铸管有限责任公司 | Automatic control system for constant-temperature baking of tundish nozzle in continuous casting |
| CN111604493A (en) * | 2020-06-19 | 2020-09-01 | 武汉钢铁有限公司 | Tundish baking protection system and method |
| CN111604493B (en) * | 2020-06-19 | 2021-12-07 | 武汉钢铁有限公司 | Tundish baking protection system and method |
| CN113199018A (en) * | 2021-05-12 | 2021-08-03 | 宝武集团鄂城钢铁有限公司 | Remote control method for automatically baking hot-metal ladle by using surplus blast furnace gas |
| CN113670081A (en) * | 2021-07-26 | 2021-11-19 | 洛阳盛鑫工矿设备有限公司 | Safety protection system of baking oven |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200121 |