CN202595217U - Band steel cooling system - Google Patents
Band steel cooling system Download PDFInfo
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- CN202595217U CN202595217U CN 201220051611 CN201220051611U CN202595217U CN 202595217 U CN202595217 U CN 202595217U CN 201220051611 CN201220051611 CN 201220051611 CN 201220051611 U CN201220051611 U CN 201220051611U CN 202595217 U CN202595217 U CN 202595217U
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- cooling zone
- cooling
- band steel
- baffle plate
- wire spiral
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Abstract
The utility model discloses a band steel cooling system, which comprises a cooling section, wherein the cooling section comprises a sealed first cooling region, a sealed second cooling region, an exhaust fan, a first electric baffle plate, a second electric baffle plate, a plurality of first radiant pipes, a plurality of second radiant pipes, a first resistance wire assembly, a second resistance wire assembly, a first PID (proportion integration differentiation) controller, a second PID controller, a third PID controller and a fourth PID controller, the first cooling region and the second cooling region are respectively provided with an exhaust opening, and the outlet parts of the first cooling region and the second cooling region are also respectively provided with a plate temperature indicator. The first PID controller and the second PID controller are used for realizing closed loop control on the cooling speed of each cooling region, and the third PID controller and the fourth PID controller are used for ensuring that the temperature of band steel in the width direction is uniform, so the plate shape of the band steel is ensured, and the quality of band steel finished products is improved.
Description
Technical field
The utility model relates to a kind of metallurgical supplementary unit, relates in particular to a kind of band steel cooling system.
Background technology
For improving the performance of band steel, annealing thermal treatment unit must be equipped with the process for cooling section after annealing.Method of cooling and rate of cooling control accuracy be the structure property and the mechanical property of influence band steel directly, is to guarantee strip quality and the good important factor of plate shape.Method of cooling commonly used has dry and cold (for example gas injection cooling, roller is cold etc.) and clammy (for example shrend), each the section cooling power that requires according to band steel annealing process curve is usually selected the suitable type of cooling.Wherein the speed of cooling of water-cooled is the fastest, but belt steel surface is prone to oxidation in the process of cooling, and can bring serious plate shape problem, thus some to surface structure have requirement, as thin as a wafer and the high band steel of added value all adopt dry and cold mode to cool off.
At present, on horizontal continuous annealing unit, be with steel to anneal under restitutive protection's atmosphere, carrying out slick style as thin as a wafer, annealing curve requires the band steel after the soaking to slowly cool to target temperature with the speed that is lower than 20 ℃/s, so that subsequent heat treatment; And its plate temperature homogeneity to the strip width direction has higher requirement; The cooling of employing jet-type, sparging gases is prone to cause band steel vibration in service in process of cooling, can cause belt steel surface to scratch; In addition, evenly also must arrange a plurality of baffle plates of a plurality of nozzles and control tolerance for guaranteeing the plate temperature, for guaranteeing the pressure medium unanimity of each nozzle along the strip width direction; Increase many places valve and joint; Thereby make device structure complicated, the trouble spot is more, detects extremely inconvenience of maintenance.
Summary of the invention
The goal of the invention of the utility model provides band steel cooling system, and this cooling system should guarantee with steel even along the temperature on its width, to guarantee that belt plate shape is good in the process of cooling zone steel; Simultaneously, this cooling system should be simple in structure, is convenient to safeguard.
According to the foregoing invention purpose, the utility model provides a kind of band steel cooling system, it comprises a cooling section;
Cooling section comprises first cooling zone of a sealing and second cooling zone of a sealing, and first cooling zone and second cooling zone have an exhaust outlet respectively, and the exit of first cooling zone and second cooling zone also is respectively equipped with a plate temperature meter;
One air exhauster, it is connected with the exhaust outlet of first cooling zone with second cooling zone respectively through pipeline;
One first electronic baffle plate, it is located on the pipeline between the exhaust outlet of the air exhauster and first cooling zone;
One second electronic baffle plate, it is located on the pipeline between the exhaust outlet of the air exhauster and second cooling zone;
Several first radiator tubes, it is along the length direction of first cooling zone staggered arrangement up and down in first cooling zone;
Several second radiator tubes, it is along the length direction of second cooling zone staggered arrangement up and down in second cooling zone;
One first wire spiral assembly, it is located in first cooling zone;
One second wire spiral assembly, it is located in second cooling zone;
One the one PID unit, it is not connected with the plate temperature score of the first electronic baffle plate and first cooling zone, controls the aperture of the first electronic baffle plate;
One the 2nd PID unit, it is not connected with the plate temperature score of the second electronic baffle plate and second cooling zone, controls the aperture of the second electronic baffle plate;
One the 3rd PID unit, it is not connected with the plate temperature score of the first wire spiral assembly and first cooling zone;
One the 4th PID unit, it is not connected with the plate temperature score of the second wire spiral assembly and second cooling zone.
In the present technique scheme, be negative pressure in first radiator tube and second radiator tube, cooling gas gets in the radiator tube, continues to take away the heat that steel passes to radiator tube, thereby the band steel is cooled off indirectly.Cooling gas after temperature raises is extracted out by air exhauster.The first electronic baffle plate and the second electronic baffle plate are respectively by a PID unit and the control of the 2nd PID unit, in order to control the flow of first radiator tube and the second radiator tube internal cooling gas.The plate temperature value that the one PID unit and the 2nd PID unit get according to the plate temperature instrumentation of first cooling zone and second cooling zone respectively; The aperture of the closed-loop control first electronic baffle plate and the second electronic baffle plate is to control the speed of cooling of first cooling zone and second cooling zone in real time.The 3rd PID unit and the 4th PID unit are respectively when being lower than certain threshold value or band steel the temperature difference is big on its width when speed of cooling; The devoting rate of the closed-loop control first wire spiral assembly and the second wire spiral assembly is to guarantee that the band steel is even along the temperature on its width.
Preferably, in above-mentioned band steel cooling system, the first wire spiral assembly and the second wire spiral assembly comprise three row wire spirals respectively, and it is arranged at both sides and central authorities along the width of band steel respectively.
Preferably, in above-mentioned band steel cooling system, the length of first cooling zone is 1.5-2 times of second cooling zone.Initial plate temperature when the band steel gets into first cooling zone is higher, and be unfavorable for the control of belt plate shape if speed of cooling is too fast this moment, and therefore the first long cooling zone of setting can guarantee that the band steel of high plate temperature cools off fully under low speed of cooling.
The described band steel of the utility model cooling system has the following advantages:
(1) the described band steel of the utility model cooling system is in band steel refrigerative process, can guarantee with steel even along the temperature on its width, thereby guarantee that belt plate shape is good, improved the quality of band steel;
(2) temperature control precision of the described band steel of the utility model cooling system is high, and system stability is strong, and can not cause detrimentally affect to plate shape, thereby has further improved the quality and the production efficiency of band steel;
(3) the described band steel of the utility model cooling system can not occur because of the vibration of band steel causes the situation of belt steel surface scuffing in band steel process of cooling, thereby has guaranteed the quality of band steel;
(4) the described band steel of the utility model cooling system structure is simple, is convenient to safeguard and maintenance.
Description of drawings
Fig. 1 is the structural representation of the described band steel of the utility model cooling system under a kind of embodiment.
Fig. 2 is the section of structure of the described band steel of the utility model cooling system under a kind of embodiment.
Embodiment
To combine Figure of description and concrete embodiment that the described band steel of the utility model cooling system is done further detailed description below.
Fig. 1 has shown the described band steel of the utility model cooling system structure in the present embodiment.Fig. 2 is the described band steel of a utility model cooling system cross section view in the present embodiment.Like Fig. 1, shown in Figure 2, sealing chamber 9 is located at the two ends of cooling section, and each sealing chamber 9 includes one and isolates curtain and sealed roller, and indoor feeding high pressure nitrogen is gone here and there with stove section atmosphere before and after avoiding mutually.Cooling section comprises the first cooling zone A and the second cooling zone B; In the present embodiment, the length of the first cooling zone A is 15m, and the length of the second cooling zone B is 10m, and the length of the first cooling zone A is 1.5 times of length of the second cooling zone B; Separated by furnace throat 10 between the first cooling zone A and the second cooling zone B, the band steel enters into the second cooling zone B through the smaller channels on the furnace throat 10 from the first cooling zone A.Be equipped with a plate temperature meter (all not shown among Fig. 1, Fig. 2) in the exit of the first cooling zone A and the second cooling zone B; This plate temperature is counted bikini scanning board temperature and is detected meter; Be located at both sides and central authorities respectively, to detect the band steel along the both sides of its width and the temperature of central authorities along the strip width direction.The first cooling zone A and the second cooling zone B have an exhaust outlet respectively, and air exhauster 4 is connected with the exhaust outlet of the first cooling zone A and the second cooling zone B respectively through pipeline.The first electronic baffle plate 2 and the second electronic baffle plate 3 are located at respectively on the pipeline between the exhaust outlet of air exhauster 4 and two cooling zones.Several the first radiator tube 1a and the second radiator tube 1b are respectively along the length direction of the first cooling zone A and second cooling zone B staggered arrangement up and down in the first cooling zone A and the second cooling zone B; The quantity of the first radiator tube 1a is 1.5 times of quantity of the second radiator tube 1b, and each radiator tube length is 1m.The first wire spiral assembly 7a and the second wire spiral assembly 7b are located at respectively in the first cooling zone A and the second cooling zone B; The first wire spiral assembly 7a and the second wire spiral assembly 7b comprise three row wire spirals respectively, and it is arranged at both sides and central authorities along the width of band steel respectively.The one PID unit 5 is not connected with the plate temperature score of the first electronic baffle plate 2 and the first cooling zone A; The 2nd PID unit 6 is not connected with the plate temperature score of the second electronic baffle plate 3 and the second cooling zone B; The one PID unit 5 and the 2nd PID unit 6 are respectively in order to control the aperture of the first electronic baffle plate 2 and the second electronic baffle plate 3, to control the speed of cooling of the first cooling zone A and the second cooling zone B in real time.The 3rd PID unit (all not shown among Fig. 1, Fig. 2) is not connected with the plate temperature score of the first wire spiral assembly 7a and the first cooling zone A; The 4th PID unit 8 is not connected with the plate temperature score of the second wire spiral assembly 7b and the second cooling zone B; The 3rd PID unit and the 4th PID unit 8 are respectively in order to control the input amount of the first wire spiral assembly 7a and the second wire spiral assembly 7b, to guarantee that the band steel is even along the temperature on its width.
Please continue to consult Fig. 1, Fig. 2, be negative pressure in the first radiator tube 1a and the second radiator tube 1b, cooling gas gets in the radiator tube, can continue to take away the heat that steel passes to radiator tube, thereby the band steel is cooled off indirectly.Cooling gas after temperature raises is extracted out by air exhauster 4.In band steel refrigerative process, the sealing curtain of cooling section gangway sealing chamber 9 depresses to 3mm place, band steel top, and nitrogen injection in the sealing chamber 9, the furnace pressure that keeps sealing chamber 9 are gone here and there with the atmosphere in the process section before and after avoiding in the scope of 10-25Pa mutually.The length of the first cooling zone A and the quantity of radiator tube are 1.5 times of the second cooling section B; Thereby make thermal zone steel can be at a slow speed in the first cooling zone A, cooling fully; To guarantee good plate shape, in the second cooling zone B, be cooled fast to target temperature then.Furnace pressure in the first cooling zone A is 60～70Pa; Furnace pressure in the second cooling zone B is 65～75Pa; Furnace pressure in the second cooling zone B is a little more than the furnace pressure in the first cooling zone A; So that protective atmosphere flows (opposite with band steel traffic direction) to the first cooling zone A from the passage of the second cooling zone B through furnace throat 10, thereby prevented because protective atmosphere flows to unstable and influence that the refrigerative homogeneity is caused.
In band steel process of cooling; The aperture that the one PID unit 5 and the 2nd PID unit 6 come the closed-loop control first electronic baffle plate 2 and the second electronic baffle plate 3 according to the travelling speed of the gangway temperature of the first cooling zone A and the second cooling zone B and band steel is to control the speed of cooling in the first cooling zone A and the second cooling zone B.The 3rd PID unit and the 4th PID unit 8 are controlled the devoting rate of the first wire spiral assembly 7a and the second wire spiral assembly 7b respectively according to the measured value of the plate temperature meter of the first cooling zone A and second cooling zone B outlet and the first cooling zone A and the required speed of cooling of the second cooling zone B, be with steel even along the temperature on its width with assurance; When required speed of cooling is lower than 3 points (along strip width direction both sides and the central authorities) temperature difference that 12 ℃/s or plate temperature instrumentation get greater than 1 ℃; Corresponding PID unit is controlled corresponding wire spiral assembly input heating, to guarantee that the band steel is even along the temperature on its width.
Be noted that the above specific embodiment of enumerating that is merely the utility model, obviously the utility model is not limited to above embodiment, and many similar variations are arranged thereupon.If those skilled in the art from all distortion that the disclosed content of the utility model directly derives or associates, all should belong to the protection domain of the utility model.
Claims (3)
1. be with the steel cooling system for one kind, it comprises a cooling section; It is characterized in that:
Said cooling section comprises first cooling zone of a sealing and second cooling zone of a sealing, and said first cooling zone and second cooling zone have an exhaust outlet respectively, and the exit of said first cooling zone and second cooling zone also is respectively equipped with a plate temperature meter;
One air exhauster, it is connected with the exhaust outlet of first cooling zone with second cooling zone respectively through pipeline;
One first electronic baffle plate, it is located on the pipeline between the exhaust outlet of the said air exhauster and first cooling zone;
One second electronic baffle plate, it is located on the pipeline between the exhaust outlet of the said air exhauster and second cooling zone;
Several first radiator tubes, it is along the length direction of first cooling zone staggered arrangement up and down in said first cooling zone;
Several second radiator tubes, it is along the length direction of second cooling zone staggered arrangement up and down in said second cooling zone;
One first wire spiral assembly, it is located in said first cooling zone;
One second wire spiral assembly, it is located in said second cooling zone;
One the one PID unit, it is not connected with the plate temperature score of the said first electronic baffle plate and first cooling zone, controls the aperture of the first electronic baffle plate;
One the 2nd PID unit, it is not connected with the plate temperature score of the said second electronic baffle plate and second cooling zone, controls the aperture of the second electronic baffle plate;
One the 3rd PID unit, it is not connected with the plate temperature score of the said first wire spiral assembly and first cooling zone;
One the 4th PID unit, it is not connected with the plate temperature score of the said second wire spiral assembly and second cooling zone.
2. band steel cooling system as claimed in claim 1 is characterized in that, the said first wire spiral assembly and the second wire spiral assembly comprise three row wire spirals respectively, and it is arranged at both sides and central authorities along the width of band steel respectively.
3. according to claim 1 or claim 2 band steel cooling system is characterized in that, the length of said first cooling zone be second cooling zone 1.5-2 doubly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220051611 CN202595217U (en) | 2012-02-17 | 2012-02-17 | Band steel cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220051611 CN202595217U (en) | 2012-02-17 | 2012-02-17 | Band steel cooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202595217U true CN202595217U (en) | 2012-12-12 |
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ID=47312771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220051611 Expired - Lifetime CN202595217U (en) | 2012-02-17 | 2012-02-17 | Band steel cooling system |
Country Status (1)
| Country | Link |
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| CN (1) | CN202595217U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104250678A (en) * | 2013-06-25 | 2014-12-31 | 宝山钢铁股份有限公司 | Slow-cooling section device of horizontal annealing furnace radiation cooling system and control method thereof |
| CN105339103B (en) * | 2013-04-29 | 2017-08-08 | 考克利尔维修工程有限责任公司 | Precooling system with controlled internal adjusting means |
-
2012
- 2012-02-17 CN CN 201220051611 patent/CN202595217U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105339103B (en) * | 2013-04-29 | 2017-08-08 | 考克利尔维修工程有限责任公司 | Precooling system with controlled internal adjusting means |
| CN104250678A (en) * | 2013-06-25 | 2014-12-31 | 宝山钢铁股份有限公司 | Slow-cooling section device of horizontal annealing furnace radiation cooling system and control method thereof |
| CN104250678B (en) * | 2013-06-25 | 2016-12-28 | 宝山钢铁股份有限公司 | Horizental annealer radiation cooling system slow cooling section device and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121212 |
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| CX01 | Expiry of patent term |