CN117340231A - Automatic control system and method for efficient ladle baking - Google Patents
Automatic control system and method for efficient ladle baking Download PDFInfo
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- CN117340231A CN117340231A CN202311430201.0A CN202311430201A CN117340231A CN 117340231 A CN117340231 A CN 117340231A CN 202311430201 A CN202311430201 A CN 202311430201A CN 117340231 A CN117340231 A CN 117340231A
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- ladle
- baking
- automatic
- control unit
- control system
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- 238000000034 method Methods 0.000 title claims abstract description 58
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 48
- 239000010959 steel Substances 0.000 claims abstract description 48
- 238000001514 detection method Methods 0.000 claims abstract description 43
- 230000002159 abnormal effect Effects 0.000 claims abstract description 7
- 239000007789 gas Substances 0.000 claims description 38
- 230000001276 controlling effect Effects 0.000 claims description 17
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 12
- 239000001301 oxygen Substances 0.000 claims description 12
- 229910052760 oxygen Inorganic materials 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 238000009628 steelmaking Methods 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 6
- 230000005856 abnormality Effects 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- 239000000779 smoke Substances 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 239000002699 waste material Substances 0.000 abstract description 5
- 238000004886 process control Methods 0.000 abstract description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D46/00—Controlling, supervising, not restricted to casting covered by a single main group, e.g. for safety reasons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D2/00—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/005—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like with heating or cooling means
- B22D41/01—Heating means
- B22D41/015—Heating means with external heating, i.e. the heat source not being a part of the ladle
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention relates to a high-efficiency automatic control system and method for ladle baking, wherein the system comprises an automatic ladle baking control unit, various ladle baking process parameters are set through the automatic ladle baking control unit, automatic baking process control information is collected, a linkage function is formed between the automatic ladle baking process control information and the automatic control of each related system, a control instruction is sent to each system, and meanwhile, the automatic control system and the automatic control method have related information prompt and alarm information output, prompt operators, prevent abnormal errors and accidents, realize automatic control of the ladle baking process, reduce manual control of the baking process and improve the automatic baking degree of the ladle. According to the invention, through the linkage of the temperature detection system, the gas burner control unit and the valve automatic control unit in the baking process, the temperature detection and the whole and partial baking of the interior of the steel ladle are carried out on different positions in the steel ladle, the temperature uniformity in the baking process in the steel ladle is improved, the baking efficiency of the steel ladle is improved, the unnecessary loss and the energy waste are reduced, and the real-time accurate adjustment is realized.
Description
Technical Field
The patent application belongs to the technical field of steelmaking production equipment and process control, and more particularly relates to an efficient automatic ladle baking control system and method.
Background
The ladle is used as one of key equipment in the steelmaking production process flow and bears tasks of molten steel storage, refining, transportation and the like. The baking of the steel ladle is taken as one of important links in the steelmaking production process, so that the explosion hazard caused by moisture in the steel ladle can be effectively prevented, the molten steel utilization rate is improved, the service life of the steel ladle is prolonged, and the like. At present, a conventional ladle baking device is a ladle baking cover, a control system of the conventional ladle baking device mainly adopts on-site control and remote control of a control cabinet, and part of control is still manual control and manual adjustment, and due to the existence of manual control and manual adjustment, manual control errors and omission of gas resources can be caused, unnecessary loss and energy waste are caused, and real-time accurate adjustment cannot be realized.
Disclosure of Invention
The invention aims to solve the technical problem of providing a high-efficiency automatic control system and method for ladle baking, which can avoid unnecessary loss and energy waste and realize real-time accurate adjustment.
In order to solve the problems, the invention adopts the following technical scheme:
the utility model provides a high-efficient ladle toasts automatic control system, includes a high-efficient ladle toasts automatic control system, its characterized in that: comprises a ladle automatic baking control unit, a ladle trolley operation control system, a ladle baking ladle cover lifting control system, an ignition and detection control system, a ladle baking process temperature detection system, a valve automatic control unit, a gas burner control unit, a smoke emission control unit and an alarm unit which are connected with the ladle automatic baking control unit,
the ladle automatic baking control unit is used for setting various ladle automatic baking process parameters, collecting information such as ladle position, ladle baking cover position, ignition condition, baking process temperature and the like in the automatic baking process, determining the ladle baking condition in real time, and sending control instructions to the valve automatic control unit and the gas burner control unit;
the ignition and detection control system controls the ignition operation of the igniter through the ladle automatic baking control unit, detects and outputs the ignition condition, and re-ignites and detects when abnormality occurs;
the ladle baking process temperature detection system is used for detecting the baking process temperatures of the bottom and the wall of the ladle at different positions to form a ladle baking process temperature detection result, and outputting the baking process temperature detection result to the ladle automatic baking control unit;
the automatic ladle baking control unit is used for controlling the gas burner control unit to adjust the nozzle spraying angle and the gas flow according to the temperature detection result in the ladle baking process, so that the ladle baking position is adjusted, and the specific position in the ladle can be baked;
the ladle automatic baking control unit controls and adjusts other units/systems, and outputs related prompt information and alarm information through the alarm unit to prompt operators to prevent abnormal errors and accidents.
Further, the automatic valve control unit comprises an oxygen execution unit and a gas execution unit which are connected with the automatic ladle baking control unit, and the oxygen execution unit and the gas execution unit are correspondingly arranged on the oxygen pipeline and the gas pipeline.
Further, the ladle automatic baking control unit is interlocked with the oxygen execution unit and the gas execution unit through a valve to carry out adjustment control.
Further, the ladle automatic baking control unit is a PLC or other central control system.
An automatic control method for baking a high-efficiency steel ladle, which utilizes the automatic control system, comprises the following steps:
s1, starting a ladle baking program of an automatic ladle baking control unit, and lifting the ladle to a ladle trolley through a crown block;
s2, controlling a ladle trolley operation control system and a ladle baking ladle cover lifting control system by the ladle automatic baking control unit, so that the ladle is moved to the position right below the ladle baking ladle cover, and the ladle baking ladle cover is lowered to a baking position;
s3, controlling an ignition and detection control system by the ladle automatic baking control unit, igniting an igniter, detecting flame by a flame detector, baking the ladle in the first stage if the flame is detected to be normal, outputting flame ignition information and restarting the igniter if the flame is detected to be abnormal, and performing secondary ignition operation;
s4, controlling the ladle automatic baking control unit to bake the ladle in the first stage to reach a certain time t 1 Then temperature detection is carried out, if the baking temperature T is 1 Reaching a preset temperature T 1 0 The ladle baking in the second stage is carried out, if the preset temperature T is not reached 1 0 Continuing the first-stage ladle baking;
s5, controlling the ladle automatic baking control unit to bake the ladle in the second stage to reach a certain time t 2 Then temperature detection is carried out, if the baking temperature T is 2 Reaching a preset temperature T 2 0 The third stage ladle baking is carried out, if the preset temperature T is not reached 2 0 Continuing to bake the ladle in the second stage;
s6, controlling the ladle automatic baking control unit to bake the ladle in the third stage to reach a certain time t 3 Then temperature detection is carried out, if the baking temperature T is 3 Reaching a preset temperature T 3 0 The ladle is subjected to heat preservation operation or the ladle baking is finished, if the preset temperature T is not reached 3 0 Continuing to bake the ladle in the third stage;
s7, after the baking of the steel ladle is finished, the steel ladle automatic baking control unit controls the steel ladle trolley operation control system and the steel ladle baking ladle cover lifting control system to enable the steel ladle baking ladle cover to rise to a preparation position, and the steel ladle trolley is moved out to a lifting position;
s8, the ladle automatic baking control unit closes the ladle automatic baking program, and swings out the ladle for steelmaking production.
Further, in steps S4 to S6, when the temperature detection is performed at each stage, if the local position in the ladle does not reach the preset temperature, the ladle automatic baking control unit controls the gas burner control unit to adjust the burner injection angle and the gas flow, and the local position in the ladle is baked to reach the preset temperature.
Further, the injection angle of the burner is 15-65 degrees, and the gas flow is 300-900 Nm 3 /h。
Further, t 1 、t 2 、t 3 3 to 20 hours; baking temperature T 1 Not less than 200 ℃ and preset temperature T 1 0 200 ℃; baking temperature T 2 Not less than 500 ℃ and preset temperature T 2 0 500 ℃; baking temperature T 3 Not less than 800 ℃ and preset temperature T 3 0 800 ℃.
Due to the adoption of the technical scheme, the beneficial effects obtained by the invention are as follows:
1) By the configuration and control method of the related ladle baking equipment, linkage functions are formed among the automatic control of each related system, so that the automatic control of the ladle baking process is realized, the manual control of the baking process is reduced, and the automatic baking degree of the ladle is improved.
2) Through the linkage of the baking process temperature detection system, the gas burner control unit and the valve automatic control unit, temperature detection is carried out on different positions in the steel ladle, the whole steel ladle is baked in a whole and a part, the temperature uniformity of the baking process in the steel ladle is improved, the baking efficiency of the steel ladle is improved, unnecessary loss and energy waste are reduced, and real-time accurate adjustment is realized.
Drawings
Fig. 1 is a schematic diagram of a control structure of an automatic ladle baking control system according to the present invention.
Fig. 2 is a control flow chart of the ladle baking automatic control system of the present invention.
Detailed Description
The present invention will be described in further detail with reference to examples.
The present invention will be described more fully hereinafter with reference to the accompanying drawings, in order to enable those skilled in the art to practice the invention fully without the need for inventive faculty.
As shown in figure 1, the high-efficiency ladle baking automatic control system comprises a ladle automatic baking control unit, a ladle trolley operation control system, a ladle baking ladle cover lifting control system, an ignition and detection control system, a ladle baking process temperature detection system, a valve automatic control unit, a gas burner control unit, a smoke emission control unit and an alarm unit which are connected with the ladle automatic baking control unit,
the ladle automatic baking control unit is used for setting various ladle automatic baking process parameters, collecting information such as ladle position, ladle baking cover position, ignition condition, baking process temperature and the like in the automatic baking process, determining the ladle baking condition in real time, and sending control instructions to the valve automatic control unit and the gas burner control unit;
the ignition and detection control system controls the ignition operation of the igniter through the ladle automatic baking control unit, detects and outputs the ignition condition, and re-ignites and detects when abnormality occurs;
the ladle baking process temperature detection system is used for detecting the baking process temperatures of the bottom and the wall of the ladle at different positions to form a ladle baking process temperature detection result, and outputting the baking process temperature detection result to the ladle automatic baking control unit;
the automatic ladle baking control unit is used for controlling the gas burner control unit to adjust the nozzle spraying angle and the gas flow according to the temperature detection result in the ladle baking process, so that the ladle baking position is adjusted, and the specific position in the ladle can be baked;
the flue gas emission control unit, the ladle trolley operation control system and the ladle baking ladle cover lifting control system are the existing systems.
The ladle automatic baking control unit controls and adjusts other units/systems, and outputs related prompt information and alarm information through the alarm unit to prompt operators to prevent abnormal errors and accidents.
The automatic valve control unit comprises an oxygen execution unit and a gas execution unit which are connected with the automatic ladle baking control unit, and the oxygen execution unit and the gas execution unit are correspondingly arranged on the oxygen pipeline and the gas pipeline.
The ladle automatic baking control unit is interlocked and regulated with the oxygen execution unit and the gas execution unit through valves.
The ladle automatic baking control unit is a PLC.
In addition, the valve also discloses a high-efficiency ladle baking automatic control method, which utilizes the automatic control system and comprises the following steps:
s1, starting a ladle baking program of an automatic ladle baking control unit, and lifting the ladle to a ladle trolley through a crown block;
s2, controlling a ladle trolley operation control system and a ladle baking ladle cover lifting control system by the ladle automatic baking control unit, so that the ladle is moved to the position right below the ladle baking ladle cover, and the ladle baking ladle cover is lowered to a baking position;
s3, controlling an ignition and detection control system by the ladle automatic baking control unit, igniting an igniter, detecting flame by a flame detector, baking the ladle in the first stage if the flame is detected to be normal, outputting flame ignition information and restarting the igniter if the flame is detected to be abnormal, and performing secondary ignition operation;
s4, controlling the ladle automatic baking control unit to bake the ladle in the first stage to reach a certain time t 1 Then temperature detection is carried out, if the baking temperature T is 1 Reaching a preset temperature T 1 0 The ladle baking in the second stage is carried out, if the preset temperature T is not reached 1 0 Continuing the first-stage ladle baking;
s5, controlling the ladle automatic baking control unit to bake the ladle in the second stage to reach a certain time t 2 Then temperature detection is carried out, if the baking temperature T is 2 Reaching a preset temperature T 2 0 The third stage ladle baking is carried out, if the preset temperature T is not reached 2 0 Continuing to bake the ladle in the second stage;
s6, controlling the ladle automatic baking control unit to bake the ladle in the third stage to reach a certain time t 3 Then temperature detection is carried out, if the baking temperature T is 3 Reaching a preset temperature T 3 0 The ladle is subjected to heat preservation operation or the ladle baking is finished, if the preset temperature T is not reached 3 0 Continuing to bake the ladle in the third stage;
s7, after the baking of the steel ladle is finished, the steel ladle automatic baking control unit controls the steel ladle trolley operation control system and the steel ladle baking ladle cover lifting control system to enable the steel ladle baking ladle cover to rise to a preparation position, and the steel ladle trolley is moved out to a lifting position;
s8, the ladle automatic baking control unit closes the ladle automatic baking program, and swings out the ladle for steelmaking production.
In the steps S4 to S6, when the temperature detection is carried out in each stage, if the local position in the ladle does not reach the preset temperature, the ladle automatic baking control unit controls the gas burner control unit to adjust the burner spraying angle and the gas flow, and the local position in the ladle is baked to reach the preset temperature. Specific:
the jet angle of the burner is 15-65 degrees, and the gas flow is 300-900 Nm 3 /h。
t 1 、t 2 、t 3 3 to 20 hours; baking temperature T 1 Not less than 200 ℃ and preset temperature T 1 0 200 ℃; baking temperature T 2 Not less than 500 ℃ and preset temperature T 2 0 500 ℃; baking temperature T 3 Not less than 800 ℃ and preset temperature T 3 0 800 ℃. The specific numerical values are selected according to the situation.
The three non-fixed baking stages of the three ladle automatic baking stages in the control process can be set before the ladle automatic baking program is started according to actual needs.
And when the temperature detection is carried out in each stage, if the local part in the steel ladle does not reach the preset temperature, the automatic steel ladle baking control unit controls the gas burner control unit to adjust the burner spraying angle and the gas flow, and the local position in the steel ladle is baked to reach the preset temperature.
According to the technical scheme, through the configuration and control method of the related ladle baking equipment, the linkage function is formed among the automatic control of each related system, so that the automatic control of the ladle baking process is realized, the manual control of the baking process is reduced, and the automatic baking degree of the ladle is improved. Through the linkage of the baking process temperature detection system, the gas burner control unit and the valve automatic control unit, temperature detection is carried out on different positions in the steel ladle, the whole steel ladle is baked in a whole and a part, the temperature uniformity of the baking process in the steel ladle is improved, the baking efficiency of the steel ladle is improved, unnecessary loss and energy waste are reduced, and real-time accurate adjustment is realized.
The invention can be widely used in the fields of design, manufacture and production process control of automatic baking devices of steel ladles and semi-steel ladles in steelmaking production.
While the preferred embodiments of the present invention have been described above, it should be noted that the present invention is not limited to the above-described specific embodiments, wherein the apparatus and structures not described in detail should be understood as being implemented in a common manner in the art; any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention will fall within the scope of the technical solution of the present invention, without departing from the scope of the technical solution of the present invention.
Claims (8)
1. An automatic control system for baking a high-efficiency steel ladle is characterized in that: comprises a ladle automatic baking control unit, a ladle trolley operation control system, a ladle baking ladle cover lifting control system, an ignition and detection control system, a ladle baking process temperature detection system, a valve automatic control unit, a gas burner control unit, a smoke emission control unit and an alarm unit which are connected with the ladle automatic baking control unit,
the ladle automatic baking control unit is used for setting ladle automatic baking process parameters, collecting ladle positions, ladle baking cover positions, ignition conditions and baking process temperatures in the automatic baking process, determining ladle baking conditions in real time, and sending control instructions to the valve automatic control unit and the gas burner control unit;
the ignition and detection control system controls the ignition operation of the igniter through the ladle automatic baking control unit, detects and outputs the ignition condition, and re-ignites and detects when abnormality occurs;
the ladle baking process temperature detection system is used for detecting the baking process temperatures of the bottom and the wall of the ladle at different positions to form a ladle baking process temperature detection result, and outputting the baking process temperature detection result to the ladle automatic baking control unit;
the automatic ladle baking control unit controls the gas burner control unit to adjust the burner spraying angle and the gas flow according to the temperature detection result in the ladle baking process, so as to adjust the ladle baking position;
the ladle automatic baking control unit controls and adjusts other units/systems, and outputs related alarm information through the alarm unit to prompt operators to prevent abnormal errors and accidents.
2. The automatic control system for baking the high-efficiency steel ladle as recited in claim 1, wherein: the automatic valve control unit comprises an oxygen execution unit and a gas execution unit which are connected with the automatic ladle baking control unit, and the oxygen execution unit and the gas execution unit are correspondingly arranged on the oxygen pipeline and the gas pipeline.
3. The automatic control system for baking the high-efficiency steel ladle as recited in claim 2, wherein: the ladle automatic baking control unit is interlocked and regulated with the oxygen execution unit and the gas execution unit through valves.
4. The automatic control system for baking the high-efficiency steel ladle as recited in claim 2, wherein: the ladle automatic baking control unit is a PLC.
5. An automatic control method for baking a high-efficiency ladle, which uses the automatic control system in any one of the claims 1 to 4, and is characterized by comprising the following steps:
s1, starting a ladle baking program of an automatic ladle baking control unit, and lifting the ladle to a ladle trolley through a crown block;
s2, controlling a ladle trolley operation control system and a ladle baking ladle cover lifting control system by the ladle automatic baking control unit, so that the ladle is moved to the position right below the ladle baking ladle cover, and the ladle baking ladle cover is lowered to a baking position;
s3, controlling an ignition and detection control system by the ladle automatic baking control unit, igniting an igniter, detecting flame by a flame detector, baking the ladle in the first stage if the flame is detected to be normal, outputting flame ignition information and restarting the igniter if the flame is detected to be abnormal, and performing secondary ignition operation;
s4, controlling the ladle automatic baking control unit to bake the ladle in the first stage to reach a certain time t 1 Then temperature detection is carried out, if the baking temperature T is 1 Reaching a preset temperature T 1 0 The ladle baking in the second stage is carried out, if the preset temperature T is not reached 1 0 Continuing the first-stage ladle baking;
s5, controlling the ladle automatic baking control unit to bake the ladle in the second stage to reach a certain time t 2 Then temperature detection is carried out, if the baking temperature T is 2 Reaching a preset temperature T 2 0 The third stage ladle baking is carried out, if the preset temperature T is not reached 2 0 Continuing to bake the ladle in the second stage;
s6, controlling the ladle automatic baking control unit to control the ladle baking in the third stage to reach a certain degreeTime t 3 Then temperature detection is carried out, if the baking temperature T is 3 Reaching a preset temperature T 3 0 The ladle is subjected to heat preservation operation or the ladle baking is finished, if the preset temperature T is not reached 3 0 Continuing to bake the ladle in the third stage;
s7, after the baking of the steel ladle is finished, the steel ladle automatic baking control unit controls the steel ladle trolley operation control system and the steel ladle baking ladle cover lifting control system to enable the steel ladle baking ladle cover to rise to a preparation position, and the steel ladle trolley is moved out to a lifting position;
s8, the ladle automatic baking control unit closes the ladle automatic baking program, and swings out the ladle for steelmaking production.
6. The automatic control method for baking the high-efficiency steel ladle as claimed in claim 5, wherein the method comprises the following steps: in the steps S4 to S6, when the temperature detection is carried out in each stage, if the local position in the ladle does not reach the preset temperature, the ladle automatic baking control unit controls the gas burner control unit to adjust the burner spraying angle and the gas flow, and the local position in the ladle is baked to reach the preset temperature.
7. The automatic control method for baking the high-efficiency steel ladle as claimed in claim 6, wherein the method comprises the following steps: the jet angle of the burner is 15-65 degrees, and the gas flow is 300-900 Nm 3 /h。
8. The automatic control method for baking the high-efficiency steel ladle as claimed in claim 6, wherein the method comprises the following steps: t is t 1 、t 2 、t 3 3 to 20 hours; baking temperature T 1 Not less than 200 ℃ and preset temperature T 1 0 200 ℃; baking temperature T 2 Not less than 500 ℃ and preset temperature T 2 0 500 ℃; baking temperature T 3 Not less than 800 ℃ and preset temperature T 3 0 800 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311430201.0A CN117340231A (en) | 2023-10-31 | 2023-10-31 | Automatic control system and method for efficient ladle baking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311430201.0A CN117340231A (en) | 2023-10-31 | 2023-10-31 | Automatic control system and method for efficient ladle baking |
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| Publication Number | Publication Date |
|---|---|
| CN117340231A true CN117340231A (en) | 2024-01-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311430201.0A Pending CN117340231A (en) | 2023-10-31 | 2023-10-31 | Automatic control system and method for efficient ladle baking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117340231A (en) |
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2023
- 2023-10-31 CN CN202311430201.0A patent/CN117340231A/en active Pending
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