CN113377047A - Control method and control system for improving full rate of molten iron tank - Google Patents
Control method and control system for improving full rate of molten iron tank Download PDFInfo
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- CN113377047A CN113377047A CN202110641860.3A CN202110641860A CN113377047A CN 113377047 A CN113377047 A CN 113377047A CN 202110641860 A CN202110641860 A CN 202110641860A CN 113377047 A CN113377047 A CN 113377047A
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- molten iron
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- spout
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25257—Microcontroller
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention relates to the field of molten iron smelting equipment, in particular to a control method and a control system for accurately judging the iron loading amount of molten iron in a molten iron tank and automatically controlling the flow nozzle to turn to realize the iron receiving of the next molten iron tank and improving the full rate of the molten iron tank. The technical scheme adopted by the invention for solving the technical problems is as follows: the control method for improving the full rate of the hot-metal bottle is characterized by comprising the following steps: when molten iron tapping flows into the molten iron tank from the tap, the radar transmitting and receiving system continuously and simultaneously transmits radar waves to the molten iron liquid level in the molten iron tank and the tank edge of the molten iron tank respectively, the radar transmitting and receiving system receives the returned radar waves and transmits the radar waves to the data processing system, the data processing system obtains the height difference between the molten iron liquid level and the tank edge, and when the height difference reaches a preset value, the tap control system rotates the tap into the next molten iron tank. The invention is particularly suitable for receiving iron in the hot metal ladle for smelting hot metal.
Description
Technical Field
The invention relates to the field of molten iron smelting equipment, in particular to a control method and a control system for improving the full rate of a molten iron tank.
Background
When the vanadium-titanium magnetite is smelted by the blast furnace, the process of receiving iron in the molten iron tank in the tapping process generally comprises the steps of enabling molten iron to flow into a swinging nozzle from a tapping hole of the blast furnace along an iron runner and then flow into the molten iron tank through the swinging nozzle. The outlet of the fixed or swinging spout is aligned with the center line of the mouth of the hot metal ladle, so that the molten iron can accurately flow into the ladle. When the existing equipment receives iron, a worker checks the molten iron liquid level height of a molten iron tank through an observation hole in a smoke collection cover, and when the molten iron liquid level reaches a preset height, a swinging spout is turned to another molten iron tank to perform iron receiving operation. Because the vanadium titano-magnetite smelts the tapping in-process, the smoke and dust is great and the molten iron splashes, and the runner nozzle is higher to the iron ladle distance, only depends on visual inspection very difficult to judge whether the hot-metal ladle is full of, and it is too little to pay attention to can appear slightly, influences next process, sometimes even appears and adorns the serious incident that the iron excessively spills over the hot-metal ladle and follows and take place. The iron loading of the hot metal ladle, the full ladle rate (more than or equal to 136t) and safe operation are seriously influenced.
In the process of molten iron flowing into a molten iron tank, the labor intensity of workers in front of the furnace is high, the spirit is highly tense, in order to improve the full rate and the safe operation of the molten iron tank, a camera is installed under a furnace platform to observe the iron content in the molten iron tank, but the effect is not ideal due to large smoke and dust, and then a high-definition camera is changed into, the effect is slightly good, but the camera can only be used for monitoring, the liquid level height of the molten iron cannot be well judged, and the requirement for meeting the iron content cannot be ensured, so that a new method needs to be found to judge the iron content of the molten iron in the molten iron tank and prevent the molten iron from overflowing out along the molten iron tank to cause safety accidents.
Disclosure of Invention
The invention aims to solve the technical problem of providing a control method and a control system for accurately judging the iron loading amount of molten iron in a molten iron tank and automatically controlling the flow nozzle to turn to realize the iron receiving of the next molten iron tank and improving the full rate of the molten iron tank.
The technical scheme adopted by the invention for solving the technical problems is as follows: the control method for improving the full rate of the hot-metal bottle is characterized by comprising the following steps: when molten iron tapping flows into the molten iron tank from the tap, the radar transmitting and receiving system continuously and simultaneously transmits radar waves to the molten iron liquid level in the molten iron tank and the tank edge of the molten iron tank respectively, the radar transmitting and receiving system receives the returned radar waves and transmits the radar waves to the data processing system, the data processing system obtains the height difference between the molten iron liquid level and the tank edge, and when the height difference reaches a preset value, the tap control system rotates the tap into the next molten iron tank.
Further, a control system for improving hot metal bottle full rate, including hot metal bottle and stem bar, its characterized in that: the device comprises a radar transmitting and receiving system, a data processing system and a spout control system, wherein the radar transmitting and receiving system is arranged on the edge of a molten iron tank and is connected with the data processing system, the data processing system is connected with the spout control system, and the spout control system is connected with the spout.
Further, the spout control system is a spout steering controller.
The invention has the beneficial effects that: the invention adopts the reflection principle of two beams of radar waves to calculate the height difference between the liquid level and the tank edge. The automatic iron filling device can not only fill the molten iron into the molten iron tank, but also prevent the molten iron from overflowing the molten iron tank, can alarm in time in the set full tank height, can be interlocked with the spout control system, realizes automatic iron filling, and has the characteristics of high reaction speed, high accuracy and no adverse environment influence by on-site smoke dust and the like. The invention is particularly suitable for receiving iron in the hot metal ladle for smelting hot metal.
Drawings
Fig. 1 is a schematic diagram of the control principle of the present invention.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
According to the control method for improving the full rate of the molten iron tank shown in fig. 1, when molten iron tapping flows into the molten iron tank from the tap, the radar transmitting and receiving system continuously and simultaneously transmits radar waves to the molten iron liquid level in the molten iron tank and the tank edge of the molten iron tank respectively, the radar transmitting and receiving system receives the returned radar waves and transmits the radar waves to the data processing system, the data processing system obtains the height difference between the molten iron liquid level and the tank edge, and when the height difference reaches a preset value, the tap control system rotates the tap into the next molten iron tank.
The invention is such in particular operation that: when tapping, molten iron flows into the molten iron tank from the runner nozzle, and at this moment, radar transmitting system continuously transmits two bundles of radar waves, wherein one bundle of radar waves reaches the molten iron liquid level, and another bundle of radar waves reaches the jar edge, and receiving system receives two bundles of radar waves simultaneously to carry out calculation processing through data processing system, and carry out contrastive analysis with the jar edge that predetermines in data processing system in advance and molten iron liquid level difference. When the height difference reaches a preset value along with the process of receiving iron in the molten iron tank, a signal is immediately transmitted to the swinging spout control system to control the electric mechanism of the swinging spout to act, the spout swings, molten iron flows into another molten iron tank, and the next molten iron tank receives iron.
The control system comprises the hot metal bottle and the spout, and comprises a radar transmitting and receiving system, a data processing system and a spout control system, wherein the radar transmitting and receiving system is arranged on the edge of the hot metal bottle, the radar transmitting and receiving system is connected with the data processing system, the data processing system is connected with the spout control system, and the spout control system is connected with the spout. The spout control system is generally preferably a spout steering controller, so that the spout can be conveniently and reliably controlled, and the manufacturing cost of the system can be reduced.
Aiming at the defects that the height difference between the lower spout of the furnace platform and the molten iron tank is large and workers are not easy to judge the liquid level height of the molten iron in operation so as to cause the liquid iron to be not filled and the molten iron to overflow in the current vanadium-titanium magnet smelting process, the invention skillfully constructs an automatic operation system for detection, judgment and control, greatly improves the accuracy and the safety of operation, has very obvious technical advantages and has very wide market popularization prospect.
Examples
The iron receiving operation carried out by adopting the invention. The device displays the data detection and analysis result of the height difference between the tank edge and the molten iron surface displayed by the equipment, and the actual value is the height difference between the tank edge and the molten iron surface objectively in the tank.
The embodiment can obtain that the system is reliable in operation and small in difference with an actual set value, work efficiency is improved, safety accidents such as molten iron overflowing out of the ladle edge are avoided, and the ladle fullness rate of the molten iron ladle is greatly improved.
Claims (3)
1. The control method for improving the full rate of the hot-metal bottle is characterized by comprising the following steps: when molten iron tapping flows into the molten iron tank from the tap, the radar transmitting and receiving system continuously and simultaneously transmits radar waves to the molten iron liquid level in the molten iron tank and the tank edge of the molten iron tank respectively, the radar transmitting and receiving system receives the returned radar waves and transmits the radar waves to the data processing system, the data processing system obtains the height difference between the molten iron liquid level and the tank edge, and when the height difference reaches a preset value, the tap control system rotates the tap into the next molten iron tank.
2. A control system for improving hot metal bottle full jar rate, including hot metal bottle and stem bar, its characterized in that: the device comprises a radar transmitting and receiving system, a data processing system and a spout control system, wherein the radar transmitting and receiving system is arranged on the edge of a molten iron tank and is connected with the data processing system, the data processing system is connected with the spout control system, and the spout control system is connected with the spout.
3. The control system for increasing the fill rate of a hot-metal ladle according to claim 2, wherein: the spout control system is a spout steering controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110641860.3A CN113377047A (en) | 2021-06-09 | 2021-06-09 | Control method and control system for improving full rate of molten iron tank |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110641860.3A CN113377047A (en) | 2021-06-09 | 2021-06-09 | Control method and control system for improving full rate of molten iron tank |
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| CN113377047A true CN113377047A (en) | 2021-09-10 |
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| CN202110641860.3A Pending CN113377047A (en) | 2021-06-09 | 2021-06-09 | Control method and control system for improving full rate of molten iron tank |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113930560A (en) * | 2021-11-29 | 2022-01-14 | 山东钢铁集团日照有限公司 | Blast furnace tank car tapping control method, device, terminal and storage medium |
| CN114441005A (en) * | 2022-01-27 | 2022-05-06 | 合肥视展光电科技有限公司 | Intelligent monitoring system and method for liquid level of molten iron tank |
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2021
- 2021-06-09 CN CN202110641860.3A patent/CN113377047A/en active Pending
Patent Citations (5)
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| CN1904565A (en) * | 2005-07-29 | 2007-01-31 | 宝山钢铁股份有限公司 | Torpedo tank car molten iron liquid surface measuring method and its device |
| CN103884400A (en) * | 2014-04-09 | 2014-06-25 | 莱芜钢铁集团有限公司 | Method and device for measuring depth of hot metal in hot metal bottle |
| CN206065387U (en) * | 2016-08-31 | 2017-04-05 | 鞍钢股份有限公司 | Hundred tons of hot-metal bottle instruction devices |
| CN211101472U (en) * | 2019-09-26 | 2020-07-28 | 秦皇岛昌德冶金科技有限公司 | Weighing device for hot-metal bottle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113930560A (en) * | 2021-11-29 | 2022-01-14 | 山东钢铁集团日照有限公司 | Blast furnace tank car tapping control method, device, terminal and storage medium |
| CN114441005A (en) * | 2022-01-27 | 2022-05-06 | 合肥视展光电科技有限公司 | Intelligent monitoring system and method for liquid level of molten iron tank |
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