CN112872305A - Automatic blowdown device of continuous casting machine and using method thereof - Google Patents
Automatic blowdown device of continuous casting machine and using method thereof Download PDFInfo
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- CN112872305A CN112872305A CN202110118343.8A CN202110118343A CN112872305A CN 112872305 A CN112872305 A CN 112872305A CN 202110118343 A CN202110118343 A CN 202110118343A CN 112872305 A CN112872305 A CN 112872305A
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- cold water
- continuous casting
- casting machine
- discharge pipe
- sewage discharge
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- 238000009749 continuous casting Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 70
- 239000010865 sewage Substances 0.000 claims abstract description 61
- 238000007599 discharging Methods 0.000 claims description 8
- 239000007769 metal material Substances 0.000 claims description 5
- 239000002699 waste material Substances 0.000 claims description 4
- 239000000498 cooling water Substances 0.000 abstract description 15
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000005266 casting Methods 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 2
- 239000010959 steel Substances 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 6
- 238000005204 segregation Methods 0.000 description 6
- 230000004913 activation Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/14—Plants for continuous casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
- B22D11/1287—Rolls; Lubricating, cooling or heating rolls while in use
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
The invention discloses an automatic blowdown device of a continuous casting machine, which comprises two cold water main pipelines, wherein one sides of the two cold water main pipelines are provided with control boxes, the tail ends of the two cold water main pipelines are vertically connected with a first sewage discharge pipe, and the first sewage discharge pipe is connected to a second sewage discharge pipe through a pneumatic valve; the front ends of the two cold water main pipelines are provided with fan-shaped section equipment, the fan-shaped section equipment consists of seven second cold water branch pipelines which are sequentially arranged, and the two cold water branch pipelines are vertically arranged between the two cold water main pipelines; sector section rollers are correspondingly arranged below the sector section equipment and the second sewage draining pipe, and photoelectric tubes are arranged above and below the sector section rollers; the blowdown device is used during shutdown maintenance, so that the problems that a nozzle is blocked and a casting blank is cooled unevenly in the production process due to poor quality of secondary cooling water are solved, the quality of the continuous casting blank is greatly improved, the production of variety steel is expanded, the economic benefit is improved, and the blowdown device is simple in structure and convenient to maintain.
Description
Technical Field
The invention relates to the technical field of metallurgical machinery, in particular to an automatic sewage discharge device of a continuous casting machine and a using method thereof.
Background
The invention discloses an automatic blowdown device of a slab caster, which adopts a sedimentation tank, a chemical oil remover, a hot water tank, a cold water tank and a self-cleaning filter to purify water quality so as to reduce the blockage rate of a nozzle in the traditional method.
Disclosure of Invention
The invention aims to solve the technical problem that the automatic blowdown device for the continuous casting machine and the use method thereof are provided aiming at the defects in the prior art, the blowdown device is used during shutdown maintenance, the problems that a nozzle is blocked and a casting blank is cooled unevenly in the production process due to poor quality of secondary cooling water are avoided, the quality of the continuous casting blank is greatly improved, the production of variety steel is expanded, the economic benefit is improved, the structure is simple, and the maintenance is convenient.
The technical scheme for solving the technical problems is as follows:
an automatic blowdown device of a continuous casting machine comprises two cold water main pipelines, wherein a control box is arranged on one side of each cold water main pipeline, the tail ends of the two cold water main pipelines are vertically connected with a first sewage discharge pipe, and the first sewage discharge pipe is connected to a second sewage discharge pipe through a pneumatic valve; the front ends of the two cold water main pipelines are provided with fan-shaped section equipment, the fan-shaped section equipment consists of seven second cold water branch pipelines which are sequentially arranged, and the two cold water branch pipelines are vertically arranged between the two cold water main pipelines; the fan-shaped section roller is correspondingly arranged below the fan-shaped section equipment and the second sewage discharge pipe, and the photoelectric tubes are arranged above and below the fan-shaped section roller.
The technical scheme of the invention is further defined as follows:
according to the automatic sewage discharging device of the continuous casting machine, the two cold water main pipelines, the two cold water branch pipelines, the first sewage discharging pipe and the second sewage discharging pipe are made of metal materials.
According to the automatic sewage draining device for the continuous casting machine, the pneumatic valve, the first sewage draining pipe and the second sewage draining pipe are connected through bolts in a fastening mode.
The diameter of the first sewage discharge pipe and the diameter of the second sewage discharge pipe of the automatic sewage discharge device of the continuous casting machine are 150 mm.
The use method of the automatic blowdown device of the continuous casting machine comprises the following steps: the automatic blowdown device of the continuous casting machine is automatically opened under the shutdown mode of the continuous casting machine, the switch of the automatic blowdown device is controlled by a pneumatic valve, pneumatic valve signals are collected in a group of photoelectric tubes on two sides of a roller way, when the last furnace of the continuous casting machine is finished, a fan-shaped section roller is produced by a tail blank of the group, valves in two cold water areas are closed, the blank tail passes through the photoelectric tubes, pneumatic valve signal activation is opened, opening time is designed, automatic closing is carried out after time is finished, and the automatic blowdown device does not directly carry out blowdown from a main pipeline through a nozzle in the two cold.
The use method of the automatic blowdown device of the continuous casting machine has the advantage that the starting time is 5 minutes.
The technical scheme adopted by the invention has the beneficial effects that: according to the technical scheme of the invention: the blockage rate of the nozzle can be effectively reduced in the process of switching and discharging secondary cooling water when the continuous casting machine stops. After valves in each area of the secondary cooling water in the shutdown state of the continuous casting machine are automatically closed, the pneumatic valve of the secondary cooling water automatic blowdown device is started, the secondary cooling water main pipe is flushed by using larger impact force of water in the primary closing and primary opening process, dirt attached to the inner wall of the water pipe automatically falls off, the secondary cooling water impact force in the secondary opening process is effectively reduced, and pipe wall dirt is brought into each area of the secondary cooling water to cause nozzle blockage, uneven secondary cooling and unqualified continuous casting billet quality, so that production quality accidents are greatly reduced, and the quality and the economic benefit of the casting billet are improved. The device effectively avoids the quality qualification rate reduction of the continuous casting billet caused by the blockage of the nozzle due to the poor quality of secondary cooling water.
Drawings
FIG. 1 is a schematic structural view of the present invention;
wherein: 1-two cold water main pipelines, 2-a control box, 3-a first sewage discharge pipe, 4-a pneumatic valve, 5-a second sewage discharge pipe, 6-a fan-shaped section device, 7-two cold water branch pipelines, 8-a fan-shaped section roller and 9-a photoelectric pipe.
Detailed Description
Example 1
The automatic blowdown device of the continuous casting machine provided by the embodiment comprises two cold water main pipelines 1, wherein one side of each cold water main pipeline 1 is provided with a control box 2, the tail ends of the two cold water main pipelines 1 are vertically connected with a first sewage discharge pipe 3, and the first sewage discharge pipe 3 is connected to a second sewage discharge pipe 5 through a pneumatic valve 4; the front end of the secondary cold water main pipeline 1 is provided with a fan-shaped section device 6, the fan-shaped section device 6 consists of seven secondary cold water branch pipelines 7 which are sequentially arranged, and the secondary cold water branch pipelines 7 are vertically arranged between the secondary cold water main pipeline 1 and the secondary cold water branch pipelines 7; sector rollers 8 are correspondingly arranged below the sector equipment 6 and the second sewage discharge pipe 5, and photoelectric tubes 9 are respectively arranged above and below the sector rollers 8; the secondary cold water main pipeline 1, the secondary cold water branch pipeline 7, the first sewage draining pipe 3 and the second sewage draining pipe 5 are made of metal materials; the pneumatic valve 4 is fixedly connected with the first sewage draining pipe 3 and the second sewage draining pipe 5 by bolts; the diameters of the first sewage draining pipe 3 and the second sewage draining pipe 5 are 150 mm; automatic waste fitting discharging of conticaster is automatic under conticaster shut down mode and is opened, and its switch is controlled by pneumatic valve, and pneumatic valve signal acquisition is in a set of photoelectric tube of roll table both sides, and when the last stove production of conticaster was ended, this group's tail base goes out fan-shaped section roller, and two cold water each district valves are closed, and when the base tail was through this photoelectric tube, manual control did not start the pneumatic valve blowdown to 5 day nozzle jam rates and casting blank low power data are extracted at random:
TABLE 1
| |
1 | 2 | 3 | 4 | 5 |
| Rate of nozzle clogging | 3.47% | 4.62% | 4.15% | 4.76% | 5.13% |
| Low power percent of pass | 100% | 95.05% | 96.66% | 98.01% | 92.00% |
| Segregation ratio of C group | 76.61% | 68.81% | 72.32% | 72.16% | 70.07% |
；
As can be seen from Table 1, the nozzle clogging rates are all between 3.47% and 5.13%, the low-power yield is more than 92%, and the C-type segregation rates are all between 68.81% and 76.61%.
Example 2
The automatic blowdown device of the continuous casting machine provided by the embodiment comprises two cold water main pipelines 1, wherein one side of each cold water main pipeline 1 is provided with a control box 2, the tail ends of the two cold water main pipelines 1 are vertically connected with a first sewage discharge pipe 3, and the first sewage discharge pipe 3 is connected to a second sewage discharge pipe 5 through a pneumatic valve 4; the front end of the secondary cold water main pipeline 1 is provided with a fan-shaped section device 6, the fan-shaped section device 6 consists of seven secondary cold water branch pipelines 7 which are sequentially arranged, and the secondary cold water branch pipelines 7 are vertically arranged between the secondary cold water main pipeline 1 and the secondary cold water branch pipelines 7; sector rollers 8 are correspondingly arranged below the sector equipment 6 and the second sewage discharge pipe 5, and photoelectric tubes 9 are respectively arranged above and below the sector rollers 8;
the secondary cold water main pipeline 1, the secondary cold water branch pipeline 7, the first sewage draining pipe 3 and the second sewage draining pipe 5 are made of metal materials; the pneumatic valve 4 is fixedly connected with the first sewage draining pipe 3 and the second sewage draining pipe 5 by bolts; the diameters of the first sewage draining pipe 3 and the second sewage draining pipe 5 are 150 mm;
automatic waste fitting discharging of conticaster is automatic under conticaster shutdown mode to be opened, its switch is controlled by pneumatic valve, pneumatic valve signal acquisition is in a set of photoelectric tube of roll table both sides, end when the last stove production of conticaster, this group's tail base goes out fan-shaped section roller, two cold water each district valves are closed, the base tail is during this photoelectric tube, pneumatic valve signal activation is opened, design opening time, automatic shutdown after the time end, the device does not directly carry out the blowdown from total pipeline through two cold district nozzles, set for the pneumatic valve and open and close action time 5 minutes, and 5 day nozzle clogging rate and casting blank low power data of random extraction:
TABLE 2
| |
1 | 2 | 3 | 4 | 5 |
| Rate of nozzle clogging | 2.61% | 3.48% | 3.26% | 3.19% | 2.17% |
| Low power percent of pass | 100% | 97.18% | 95.77% | 100% | 100% |
| Segregation ratio of C group | 81.95% | 75.00% | 78.95% | 80.82% | 85.35% |
；
As can be seen from Table 2, the nozzle clogging rates were all between 2.17% and 3.48%, the low-power yield was above 95.77%, and the C-type segregation rates were all between 75% and 85.35%.
Example 3
The automatic blowdown device of the continuous casting machine provided by the embodiment comprises two cold water main pipelines 1, wherein one side of each cold water main pipeline 1 is provided with a control box 2, the tail ends of the two cold water main pipelines 1 are vertically connected with a first sewage discharge pipe 3, and the first sewage discharge pipe 3 is connected to a second sewage discharge pipe 5 through a pneumatic valve 4; the front end of the secondary cold water main pipeline 1 is provided with a fan-shaped section device 6, the fan-shaped section device 6 consists of seven secondary cold water branch pipelines 7 which are sequentially arranged, and the secondary cold water branch pipelines 7 are vertically arranged between the secondary cold water main pipeline 1 and the secondary cold water branch pipelines 7; sector rollers 8 are correspondingly arranged below the sector equipment 6 and the second sewage discharge pipe 5, and photoelectric tubes 9 are respectively arranged above and below the sector rollers 8;
the secondary cold water main pipeline 1, the secondary cold water branch pipeline 7, the first sewage draining pipe 3 and the second sewage draining pipe 5 are made of metal materials; the pneumatic valve 4 is fixedly connected with the first sewage draining pipe 3 and the second sewage draining pipe 5 by bolts; the diameters of the first sewage draining pipe 3 and the second sewage draining pipe 5 are 150 mm;
automatic waste fitting discharging of conticaster is automatic under conticaster shutdown mode to be opened, its switch is controlled by pneumatic valve, pneumatic valve signal acquisition is in a set of photoelectric tube of roll table both sides, end when the last stove production of conticaster, this group's tail base goes out fan-shaped section roller, two cold water each district valves are closed, the base tail is during this photoelectric tube, pneumatic valve signal activation is opened, design opening time, automatic shutdown after the time end, the device does not directly carry out the blowdown from total pipeline through two cold district nozzles, set for the pneumatic valve and open and close action time 8 minutes, and 5 day nozzle jam rates and casting blank low power data of random extraction:
TABLE 3
| |
1 | 2 | 3 | 4 | 5 |
| Rate of nozzle clogging | 3.07% | 2.72% | 2.35% | 1.96% | 2.16% |
| Low power percent of pass | 97.23% | 100% | 100% | 100% | 100% |
| Segregation ratio of C group | 80.47% | 83.58% | 85.71% | 90.21% | 86.00% |
；
As can be seen from Table 3, the nozzle clogging rates were all between 2.16% and 3.07%, the low-power yield was above 97.23%, and the C-type segregation rates were all between 80.47% and 90.21%.
In conclusion, the blockage rate of the nozzle can be effectively reduced in the switching and sewage discharge process of secondary cold water when the continuous casting machine stops. After valves in each area of the secondary cooling water in the shutdown state of the continuous casting machine are automatically closed, the pneumatic valve of the secondary cooling water automatic blowdown device is started, the secondary cooling water main pipe is flushed by using larger impact force of water in the primary closing and primary opening process, dirt attached to the inner wall of the water pipe automatically falls off, the secondary cooling water impact force in the secondary opening process is effectively reduced, and pipe wall dirt is brought into each area of the secondary cooling water to cause nozzle blockage, uneven secondary cooling and unqualified continuous casting billet quality, so that production quality accidents are greatly reduced, and the quality and the economic benefit of the casting billet are improved. The device effectively avoids the quality qualification rate reduction of the continuous casting billet caused by the blockage of the nozzle due to the poor quality of secondary cooling water.
In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.
Claims (6)
1. The utility model provides an automatic waste fitting discharging of conticaster, includes two cold water main pipes (1), one side of two cold water main pipes (1) be equipped with control box (2), its characterized in that: the tail ends of the two cold water main pipelines (1) are vertically connected with a first sewage discharge pipe (3), and the first sewage discharge pipe (3) is connected to a second sewage discharge pipe (5) through a pneumatic valve (4); the front end of the secondary cold water main pipeline (1) is provided with a fan-shaped section device (6), the fan-shaped section device (6) consists of seven secondary cold water branch pipelines (7) which are sequentially arranged, and the two secondary cold water branch pipelines (7) are vertically arranged with the secondary cold water main pipeline (1); the fan-shaped section device (6) and the second sewage draining pipe (5) are correspondingly provided with fan-shaped section rollers (8), and a photoelectric tube (9) is arranged above and below the fan-shaped section rollers (8).
2. The automatic drain device for continuous casting machine according to claim 1, characterized in that: the secondary cold water main pipeline (1), the secondary cold water branch pipeline (7), the first sewage discharge pipe (3) and the second sewage discharge pipe (5) are all made of metal materials.
3. The automatic drain device for continuous casting machine according to claim 1, characterized in that: and the pneumatic valve (4) is fixedly connected with the first sewage discharge pipe (3) and the second sewage discharge pipe (5) by bolts.
4. The automatic drain device for continuous casting machine according to claim 1, characterized in that: the diameters of the first sewage draining pipe (3) and the second sewage draining pipe (5) are 150 mm.
5. A method for using an automatic drain device of a continuous casting machine, which is provided with the automatic drain device of the continuous casting machine according to any one of claims 1 to 4, characterized by comprising the following steps: the automatic blowdown device of the continuous casting machine is automatically opened under the shutdown mode of the continuous casting machine, the switch of the automatic blowdown device is controlled by a pneumatic valve, pneumatic valve signals are collected in a group of photoelectric tubes on two sides of a roller way, when the last furnace of the continuous casting machine is finished, a tail billet of the group goes out of a fan-shaped section roller, valves of two cold water areas are closed, the billet tail passes through the photoelectric tubes, the pneumatic valve signals are activated and opened, the opening time is designed, the automatic closing is carried out after the time is finished, and the device directly carries out blowdown from a main pipeline without passing through a nozzle of the two.
6. The use method of the automatic blowdown apparatus of the continuous casting machine according to claim 5, wherein: the opening time is 5 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110118343.8A CN112872305A (en) | 2021-01-28 | 2021-01-28 | Automatic blowdown device of continuous casting machine and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110118343.8A CN112872305A (en) | 2021-01-28 | 2021-01-28 | Automatic blowdown device of continuous casting machine and using method thereof |
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| CN112872305A true CN112872305A (en) | 2021-06-01 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202061850U (en) * | 2010-12-09 | 2011-12-07 | 攀钢集团钢铁钒钛股份有限公司 | Secondary cold water pipeline washing device of continuous casting machine |
| CN102430733A (en) * | 2011-12-21 | 2012-05-02 | 天津钢铁集团有限公司 | Secondary cooling water amplitude-cutting control method of slab continuous casting machine |
| CN102631806A (en) * | 2012-03-27 | 2012-08-15 | 芜湖新兴铸管有限责任公司 | Secondary cooling water purification device for continuous casting machine and method for operating and using secondary cooling water purification device |
| CN202701332U (en) * | 2012-08-03 | 2013-01-30 | 新疆八一钢铁股份有限公司 | Device for preventing shower pipe in fan-shaped section of slab caster from blocking |
| CN210172520U (en) * | 2019-06-28 | 2020-03-24 | 张家港宏昌钢板有限公司 | Continuous casting nozzle prevents blockking up blowdown pipeline |
-
2021
- 2021-01-28 CN CN202110118343.8A patent/CN112872305A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202061850U (en) * | 2010-12-09 | 2011-12-07 | 攀钢集团钢铁钒钛股份有限公司 | Secondary cold water pipeline washing device of continuous casting machine |
| CN102430733A (en) * | 2011-12-21 | 2012-05-02 | 天津钢铁集团有限公司 | Secondary cooling water amplitude-cutting control method of slab continuous casting machine |
| CN102631806A (en) * | 2012-03-27 | 2012-08-15 | 芜湖新兴铸管有限责任公司 | Secondary cooling water purification device for continuous casting machine and method for operating and using secondary cooling water purification device |
| CN202701332U (en) * | 2012-08-03 | 2013-01-30 | 新疆八一钢铁股份有限公司 | Device for preventing shower pipe in fan-shaped section of slab caster from blocking |
| CN210172520U (en) * | 2019-06-28 | 2020-03-24 | 张家港宏昌钢板有限公司 | Continuous casting nozzle prevents blockking up blowdown pipeline |
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