CN102000707A - Laminar cooling water flow adjustor - Google Patents
Laminar cooling water flow adjustor Download PDFInfo
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- CN102000707A CN102000707A CN2010105668656A CN201010566865A CN102000707A CN 102000707 A CN102000707 A CN 102000707A CN 2010105668656 A CN2010105668656 A CN 2010105668656A CN 201010566865 A CN201010566865 A CN 201010566865A CN 102000707 A CN102000707 A CN 102000707A
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- laminar flow
- adjustable plate
- laminar
- cooling water
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The invention provides a laminar cooling water flow adjustor, which comprises a laminar cooling collector (1), an adjusting plate (2), an executing mechanism (3) and a valve positioner (4), wherein holes are formed on both the laminar cooling collector (1) and the adjusting plate (2), and hole areas of the two correspond to each other; and the adjusting plate (2) is connected with the executing mechanism (3), and the valve positioner (4) is connected with the executing mechanism (3). The laminar cooling water flow adjustor can uniformly cool band steel, can adapt to steel sheets of different widths and lengths, and can automatically control the cooling process of the steel sheets.
Description
Technical field
Hot-rolling laminar cooling water flow quantity regulating device of the present invention, belong to the design of hot rolling control refrigeration technique equipment, manufacturing field of equipment, be applicable to iron and steel productions such as hot continuous rolling, CSP (close-coupled torrid zone production technology), steekle mill, cut deal and Wide and Thick Slab, relate in particular to the control of hot rolled steel plate width product final temperature.
Background technology
The laminar flow cooling technology is to make low-pressure water (0.07MPa) form pulseless transparent a fluid stream by intensive gooseneck from collector or water tank, the water of this laminar condition vertically sprays surface of steel plate from certain altitude, can be wandering to all around reposefully, thereby enlarged the effective contact of cooling water, improved cooling effectiveness greatly with steel plate.The laminar flow cooling of high temperature steel plate, more complicated than other coolings, the current of high-density tube laminar flow ejection impact surface of steel plate under certain pressure, can not form the steam film at the impact zone surface of steel plate, so cooling effect is strong.
Steel plate limit portion temperature itself after rolling can be lower than the centre.Laminar flow cooling manifold length is corresponding with the production steel plate width, because the cooling of design laminar flow is undertaken by maximum steel plate width, and the high density gooseneck is uniform on the collector, for producing the hot rolled plate that developed width is lower than maximum steel plate width, can make strip edge portion relative different with the cooling condition at middle part inevitably, promptly limit portion intensity of cooling is higher than middle; In addition, when laterally purging on laminar flow cooling metal sheets top, the cooling water at middle part need flow out by steel plate limit portion, causes the temperature on steel plate both sides obviously low than middle.Because strip edge portion and middle part inhomogeneous cooling will cause flatness defect even limit portion crackle occur, bring serious harmful effect for hot rolling subsequent production (as cold rolling).
According to the product structure of hot continuous rolling, CSP, steekle mill, cut deal and Wide and Thick Slab, the steel plate width of production is often to change, even can predict the temperature deviation on the product width direction, but also is difficult to carry out automatic control.Though can improve steel plate limit portion temperature problem on the low side by symmetry or asymmetric adjustment edge-masking device, because the edge-masking cooling water inflow has/do not have sudden change, and equipment is huge.Therefore, be not desirable regulative mode.In addition, CSP can adopt and improve that the method for stove heating-up temperature meets the demands laminar flow cooling limit portion temperature at the bottom of the roller, but can increase energy consumption and scaling loss like this.
Summary of the invention
Technical problem to be solved by this invention is: a kind of laminar cooling water flow regulator is provided, and it can evenly cool off the band steel, and can adapt to the steel plate of different in width and length, and its cooling procedure is controlled automatically.
The technical solution adopted in the present invention is: a kind of laminar cooling water flow regulator comprises laminar flow cooling manifold, adjustable plate, executing agency and valve positioner; Be equipped with perforate on laminar flow cooling manifold and the adjustable plate, and the opening area of the two is corresponding mutually; Adjustable plate is connected with executing agency, and valve positioner is connected with executing agency.
Advantage of the present invention: the present invention solves the uneven problem of product steel plate width direction temperature by means of ultrared sweeping temperature measuring instrument and computer.In addition, the present invention not only can replace the laminar flow cooling and use acceleration switching valve, and can replace the edge-masking device simultaneously, makes the laminar cooling water flow regulator become succinctly, make things convenient for.With this laminar cooling water Flow-rate adjustment adjusting device similar techniques beyond example still at home and abroad.
Description of drawings
Fig. 1 is a laminar cooling water flow regulator pie graph.
Fig. 2 is laminar cooling water flow regulator fully open position figure.
Fig. 3 is laminar cooling water flow regulator half-open position figure.
Fig. 4 is the laminar cooling water flow regulator complete shut-down location drawing.
The specific embodiment
Hot-rolling laminar cooling water flow quantity regulating device of the present invention comprises laminar flow cooling manifold (also claiming water tank), adjustable plate, pneumatic actuator (also can be hydraulic actuating mechanism or electric operator), electricity-gas valve positioner (also can be electrohydraulic servo valve).Move by the Direct Travel of adjustable plate is two-way, every cover laminar flow cooling water flow adjusting device can symmetry (also can be asymmetric according to pass) be controlled collector two ends water yield size, also can carry out limit portion simultaneously and block continuously, to regulate cooling water flow value on the steel plate width direction; By tens combinations, to regulate cooling water flow on the steel plate length direction to jacket layer stream cooling water flow quantity regulating devices up to a hundred.Therefore, the present invention can realize that not only finish to gauge exports steel plate length direction temperature and controls automatically, and can carry out the adjustment on the width, and cooling water flow is that the steel billet temperature adjusting is two-dimentional.
Laminar flow cooling control (also being coiling temperature control with CSP for hot continuous rolling) is regulated cooling water flow by I and II computer and relevant Mathematical Modeling and is realized, it is one of hot rolling engineering most important control system, it is directly connected to the hot-rolled product quality, particularly therefore the institutional framework of steel plate and mechanical property are the keys that hot rolling is produced.
A kind of laminar cooling water flow regulator comprises laminar flow cooling manifold 1, adjustable plate 2, pneumatic actuator 3, electricity-gas valve positioner 4.Movably adjustable plate 2 overlays fixing laminar flow cooling manifold 1 inside, by pneumatic actuator 3 drive its on request direction move, the moving direction of pneumatic actuator 3 and location are required to realize according to control signal by electricity-gas valve positioner mounted thereto 4.Pneumatic actuator 3 can be by surging or the electric operator replacement, and moving direction and location are then realized according to control signal by electrohydraulic servo valve or built-in servo feedback device respectively equally.
In preferred embodiment, laminar flow cooling manifold (also claim water tank, on 2～6 rows of openings are arranged) can be cylindrical or cube.Laminar flow cooling manifold size is calculated by factors such as the plate size that is cooled, cooling water inflow and hydraulic pressure and is determined.According to the steel plate width that is cooled, evenly perforate on the collector.Bore size, quantity and the number of permutations are mirror finish with the relevant (see figure 1) of steel plate requirement that is cooled, opening area internal layer, external conventional gooseneck of corresponding tapping or other types laminar flow cooling arm.
Adjustable plate (on 2～6 rows of openings are arranged) can be arc or rectangular slab.The adjustable plate size is close with laminar flow cooling manifold opening area size, on it according to the steel plate characteristics perforate that is cooled, it is relevant that pass, quantity, size and location and cooling require, and with the corresponding (see figure 1) of perforate on the collector, the opening area that contacts with the laminar flow cooling manifold is a mirror finish.Adjustable plate provides external force to move by executing agency (pneumatic, surge or electronic), regulates continuously with the water yield of realize being cooled steel plate width direction and limit portion temperature.
Pneumatic actuator (also available hydraulic actuating mechanism or electric operator replace) is used to drive the two-way mobile and location of adjustable plate, can reequip with pneumatic actuator by control valve.Executing agency can be with pneumatic double-acting cylinder formula, single-acting cylinder formula or diaphragm type.The power of executing agency depends on the friction size (see figure 1) between adjustable plate and laminar flow cooling manifold, adjustable plate and its support.The unidirectional omnidistance traveling time of executing agency is in 1 second, to satisfy laminar flow cooling response requirement fast.
Electricity-gas valve positioner (but also electricity consumption-replacements such as the servo valve that surges) cooperates with pneumatic actuator, and by equipment control commands such as reception outer computers, two-way the moving with positioning control of finishing adjustable plate requires (see figure 1).Electricity-gas valve positioner can be double-acting type or single-acting type.
Below in conjunction with accompanying drawing 1～4, adopting pneumatic actuator and electricity-gas valve positioner is that example is described further concrete enforcement of the present invention:
Movably adjustable plate (on have 6 row 17 row perforates, diameter of phi 20) overlay fixing laminar flow cooling manifold (on have 6 row 17 row perforates, diameter of phi 20) in, by pneumatic actuator drive its on request direction move, the moving direction of pneumatic actuator and location require to be realized according to computer control by electricity-gas valve positioner mounted thereto.
Electricity-gas valve positioner receives 4～20mA DC (direct current) control signal from computer system (comprising PLC), and the size and Orientation of control power gas source is to drive double acting executing agency.By relatively moving of the Direct Travel adjustable plate that is connected as a single entity with pneumatic actuator and laminar flow cooling manifold, make on adjustable plate and the laminar flow cooling manifold perforate carry out orderly permutations and combinations, to adjust intensive cooling water arm water conservancy diversion area, finally reach the purpose of continuous adjusting cooling water flow size.
When control signal was 4mA DC, adjustable plate and the perforate of laminar flow cooling manifold all were in the shielding status (see figure 4); When control signal was 20mA DC, adjustable plate and the perforate of laminar flow cooling manifold all were in the fully conducting state (see figure 2).Because the laminar cooling water flow regulator is adjustable arbitrarily in 4～20mA DC scope, as when control signal is 12mA DC, adjustable plate and laminar flow cooling manifold perforate limit portion are in shielding status, middle perforate all is in the fully conducting state (see figure 3), and is in the transition conducting state from limit portion to the zone line perforate.The discharge size of transition conducting state depends on the adjustable plate epithyrid, and the pass design is relevant be cooled steel plate width and limit portion temperature.The present invention is illustrated as rectangle and adds both sides semicircle pass, but is not limited thereto pass.
The laminar flow cooling manifold is cylindrical, and corresponding tapping can external conventional gooseneck.Adjustable plate is an arc, and the adjustable plate size is corresponding with laminar flow cooling manifold opening area size, and according to being cooled the perforate of steel plate characteristics, the opening area that contacts with the laminar flow cooling manifold is a mirror finish on it.Adjustable plate by pneumatic actuator provide external force on request direction move, regulate continuously to carry out the water yield according to be cooled steel plate width and limit portion temperature.
The laminar flow that the present invention carries out by means of ultrared sweeping temperature measuring instrument cools off into, outlet temperature measurements and calculations machine program, the control of finish rolling outlet steel plate length direction temperature model, FEEDFORWARD CONTROL and FEEDBACK CONTROL can be realized, and the control of steel plate width direction temperature model, FEEDFORWARD CONTROL and FEEDBACK CONTROL can be realized.
Be described in further detail the present invention below in conjunction with accompanying drawing.
A kind of laminar cooling water flow regulator comprises laminar flow cooling manifold 1, adjustable plate 2, executing agency 3 and valve positioner 4; Be equipped with perforate on laminar flow cooling manifold 1 and the adjustable plate 2, and the opening area of the two is corresponding mutually; Adjustable plate 2 is connected with executing agency 3, and valve positioner 4 is connected with executing agency 3.
Described adjusting device, laminar flow cooling manifold 1 is cylinder or cube, which is provided with 2～6 rows of openings, the polishing of opening area internal mirror.
Described adjusting device, adjustable plate 2 is arc or rectangular slab, which is provided with 2～6 rows of openings, opening area and laminar flow cooling manifold 1 contact portion are mirror finish.
Described adjusting device, executing agency 3 adopts pneumatic actuator, available pneumatic double-acting cylinder formula, single-acting cylinder formula or diaphragm type; Executing agency 3 can also adopt surges or electric operator.
Described adjusting device, valve positioner 4 adopts electricity-gas valve positioner or the electricity-servo valve that surges, and is double-acting type or single-acting type.
Claims (5)
1. laminar cooling water flow regulator, it is characterized in that: it comprises laminar flow cooling manifold (1), adjustable plate (2), executing agency (3) and valve positioner (4); Be equipped with perforate on laminar flow cooling manifold (1) and the adjustable plate (2), and the opening area of the two is corresponding mutually; Adjustable plate (2) is connected with executing agency (3), and valve positioner (4) is connected with executing agency (3).
2. adjusting device according to claim 1 is characterized in that: laminar flow cooling manifold (1) is cylinder or cube, which is provided with 2～6 rows of openings, the polishing of opening area internal mirror.
3. adjusting device according to claim 1 is characterized in that: adjustable plate (2) is arc or rectangular slab, which is provided with 2～6 rows of openings, and opening area and laminar flow cooling manifold (1) contact portion are mirror finish.
4. adjusting device according to claim 1 is characterized in that: executing agency (3) adopts pneumatic actuator, available pneumatic double-acting cylinder formula, single-acting cylinder formula or diaphragm type; Executing agency (3) can also adopt surges or electric operator.
5. adjusting device according to claim 1 is characterized in that: valve positioner (4) adopts electricity-gas valve positioner or the electricity-servo valve that surges, and is double-acting type or single-acting type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105668656A CN102000707A (en) | 2010-12-01 | 2010-12-01 | Laminar cooling water flow adjustor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105668656A CN102000707A (en) | 2010-12-01 | 2010-12-01 | Laminar cooling water flow adjustor |
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| Publication Number | Publication Date |
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| CN102000707A true CN102000707A (en) | 2011-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2010105668656A Pending CN102000707A (en) | 2010-12-01 | 2010-12-01 | Laminar cooling water flow adjustor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102259118A (en) * | 2011-07-01 | 2011-11-30 | 中冶赛迪工程技术股份有限公司 | Method for improving cooling uniformity of rolling piece and device for uniformly cooling rolling piece |
| CN108723104A (en) * | 2017-04-17 | 2018-11-02 | 上海梅山钢铁股份有限公司 | A kind of laminar flow collector cooling water inflow control device |
| CN113477728A (en) * | 2021-06-17 | 2021-10-08 | 首钢集团有限公司 | Measuring device, and system and method for detecting nozzle flow of laminar flow cooling header |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61162223A (en) * | 1985-01-10 | 1986-07-22 | Mitsubishi Heavy Ind Ltd | Nozzle header in acceleration cooling device |
| JPH01317615A (en) * | 1988-03-30 | 1989-12-22 | Sumitomo Metal Ind Ltd | Spray header |
| CN101837376A (en) * | 2009-03-20 | 2010-09-22 | 宝山钢铁股份有限公司 | Plunger-type upper spraying laminar flow cooling device |
-
2010
- 2010-12-01 CN CN2010105668656A patent/CN102000707A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61162223A (en) * | 1985-01-10 | 1986-07-22 | Mitsubishi Heavy Ind Ltd | Nozzle header in acceleration cooling device |
| JPH01317615A (en) * | 1988-03-30 | 1989-12-22 | Sumitomo Metal Ind Ltd | Spray header |
| CN101837376A (en) * | 2009-03-20 | 2010-09-22 | 宝山钢铁股份有限公司 | Plunger-type upper spraying laminar flow cooling device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102259118A (en) * | 2011-07-01 | 2011-11-30 | 中冶赛迪工程技术股份有限公司 | Method for improving cooling uniformity of rolling piece and device for uniformly cooling rolling piece |
| CN102259118B (en) * | 2011-07-01 | 2013-10-09 | 中冶赛迪工程技术股份有限公司 | Method for improving cooling uniformity of rolling piece and device for uniformly cooling rolling piece |
| CN108723104A (en) * | 2017-04-17 | 2018-11-02 | 上海梅山钢铁股份有限公司 | A kind of laminar flow collector cooling water inflow control device |
| CN113477728A (en) * | 2021-06-17 | 2021-10-08 | 首钢集团有限公司 | Measuring device, and system and method for detecting nozzle flow of laminar flow cooling header |
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Application publication date: 20110406 |