CN211564054U - Subdivision cooling control device for cooling surface material - Google Patents
Subdivision cooling control device for cooling surface material Download PDFInfo
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- CN211564054U CN211564054U CN201921755551.3U CN201921755551U CN211564054U CN 211564054 U CN211564054 U CN 211564054U CN 201921755551 U CN201921755551 U CN 201921755551U CN 211564054 U CN211564054 U CN 211564054U
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Abstract
The utility model provides a cooled segmentation accuse cold charge of belted steel length, width another direction's segmentation accuse cold structural mode has been adopted to the refrigerated device of belted steel width direction to and the ascending multizone temperature-detecting device of belted steel width direction, form closed-loop temperature control system with laminar flow cooling's segmentation accuse cold charge, reduced the temperature difference at belted steel limit portion and belted steel middle part, more even realization rolls the control of back temperature.
Description
Technical Field
The utility model belongs to steel rolling equipment relates to the cooled segmentation accuse cold charge of area surface material of hot rolling production line and puts.
Background
The requirements on the temperature control of rolled strip steel in hot rolling production are higher and higher, particularly the requirements on the rolled coiling temperature of cold rolling stock preparation are higher and higher, the temperature difference between the head and the tail of the strip steel in the length direction and the middle of the strip steel and the temperature difference of the cross section of the strip steel can cause larger influence on the production of household electric plates, high-strength steel and alloy development steel, most of the currently adopted hot rolling laminar cooling adopts a laminar cooling control mode in the length direction, the overall temperature control on the cross section of the whole roll of strip steel is not good, and the plate shape is worse after the edge wave or stress release of a rolling mill seriously, so that the subsequent production as a base material is influenced.
The currently adopted strip steel laminar cooling generally uses sectional control and flow control in the length direction, the control precision of the laminar cooling is not ideal enough, and the strip steel laminar cooling cannot be accurately controlled for the abnormal change of the production line speed or the abnormal strip steel plate type.
The flow rate and temperature of laminar cooling and the number of the nozzle fine parts are small, so that the uniformity can not be effectively realized according to the temperature of the surface of the strip steel plate, and the ideal temperature control requirement is met.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the problem that above-mentioned exists, provided the refrigerated segmentation accuse cold charge of area face material and put
The technical scheme of the utility model: a subdivision cooling control device for cooling a strip surface material is characterized in that nozzles controlled by electromagnetic valves for subdivision, segmentation and areas are arranged in the length direction and the longitudinal direction of the strip surface material, I-section laminar flow cooling arranged longitudinally is arranged at the first stage of steel tapping of a rolling mill, II-section laminar flow cooling is arranged after I-section laminar flow cooling, III-section laminar flow cooling is arranged after II-section laminar flow cooling, IV-section laminar flow cooling is arranged after III-section laminar flow cooling, and gaps are reserved among the laminar flow cooling of all the sections; several partitions of the sectional laminar cooling are in an up-and-down symmetrical relation, the cooling nozzles are arranged on the upper surface and the lower surface of the strip steel from top to bottom, the cooling nozzles of the sectional laminar cooling are driven by electromagnetic valves independently, the cooling nozzles have lifting structures and are installed on nozzle spray beams, the opening or closing of the cooling nozzles is controlled by the electromagnetic valves in the middle, the nozzle spray beams are connected with a constant-pressure water storage tank, the constant-pressure water storage tank is connected with a lifting electric cylinder, the lifting electric cylinder is connected with a laminar cooling fixed cross beam, one end of the lifting electric cylinder is fixed on the laminar cooling fixed cross beam, and the height adjustment of each section of the sectional laminar cooling is realized through the expansion of.
And a part of the cooling nozzles are arranged in a staggered manner.
The lifting electric cylinders are multiple in number, namely even number.
The method is characterized in that 1 or more than two strip steel temperature detectors are arranged in front of a coiling machine and used for detecting the temperature of the strip steel in the width direction at any time and the temperature of the whole coil in the length direction at the same time, and a database is connected to establish the flow of a segmented cooling control device for adjusting laminar cooling, the number of control nozzles and the opening and closing area of the nozzles. Preferably, the strip steel temperature detector is a movable temperature measuring instrument, a measuring head of the temperature measuring instrument is arranged on a movable cross beam of the temperature measuring instrument and can move, and two ends of the movable cross beam of the temperature measuring instrument are arranged on a driving mounting seat of the temperature measuring instrument.
The cooling nozzle adopts a direct injection mode or a swirl nozzle mode. Further, the edge of the strip steel adopts a direct injection mode, and a swirl nozzle is adopted in the middle of the strip steel.
Further, the method comprises the following steps: the constant pressure water storage tank is connected with the cooling nozzle through a hose.
Preferably, the laminar cooling nozzles are divided longitudinally into 9 zones, namely a longitudinal nozzle middle zone and a left longitudinal nozzle zone and a right longitudinal nozzle zone which are arranged on both sides of the middle zone, wherein the left and the right represent 4 zones, a left longitudinal nozzle 1 zone L1, a left longitudinal nozzle 2 zone L2, a left longitudinal nozzle 3 zone L3 and a left longitudinal nozzle 4 zone L4 which are arranged on the left relative to the nozzles of the respective zones of the segmented laminar cooling; arranged on the right side are 4 zones, right longitudinal nozzle 1 zone R1, right longitudinal nozzle 2 zone R2, right longitudinal nozzle 3 zone R3, right longitudinal nozzle 4 zone R4.
The utility model has the advantages that: the structure design adopts a structure mode of sectional cooling control from the length and the width of the strip steel in another direction, and a multi-zone temperature detection device in the width direction of the strip steel and the sectional cooling control device for laminar cooling form a closed-loop temperature control system, so that the temperature control after rolling is realized more uniformly.
Drawings
FIG. 1 is a front view of a subdivided controlled cooling device with face material cooling;
FIG. 2 is a top view of a subdivided controlled cooling device with cooling of the facetted material;
FIG. 3 is a schematic view of a laminar flow cooling nozzle and lift and lower structure;
FIG. 4 is a schematic view of a laminar cooling nozzle and longitudinal zoning of a strip;
FIG. 5 is a block diagram of a mobile temperature gauge arrangement;
FIG. 6 is a cross-sectional temperature comparison diagram of laminar cooling longitudinal section control strip steel;
FIG. 7 is a closed-loop control diagram of laminar cooling and a mobile temperature gauge;
description of the symbols: 1 strip steel, 2 rolling mills, 3 segmented laminar cooling, 301I section laminar cooling, 3011 cooling nozzles, 3012 nozzle spray beams, 3013 constant-pressure water storage tanks, 3014 lifting electric cylinders, 3015 laminar cooling fixed beams, 302 II section laminar cooling, 303 III section laminar cooling, 304 IV section laminar cooling, C longitudinal nozzle middle area, L1 left longitudinal nozzle 1 area, L2 left longitudinal nozzle 2 area, the system comprises an L3 left longitudinal nozzle 3 area, an L4 left longitudinal nozzle 4 area, an R1 right longitudinal nozzle 1 area, an R2 right longitudinal nozzle 2 area, an R3 right longitudinal nozzle 3 area, an R4 right longitudinal nozzle 4 area, a 4-mobile temperature measuring instrument, a 401 temperature measuring instrument moving beam, a 402 temperature measuring instrument driving mounting seat, a 403 temperature measuring instrument measuring head, 5 coiling machine pinch rolls, 6 coiling machines, 7 production line process parameters and 8-level secondary control systems.
Detailed Description
Referring to the front view and the top view of the subdivision cooling control device for cooling the strip surface material in fig. 1 and 2, the subdivision cooling control device for cooling the strip surface material is arranged in a way that the coiling temperature of the strip steel 1 needs to be controlled at a target temperature after the strip steel 1 is rolled into the thickness of a final product and the required tapping temperature by a rolling mill 2, and the coiling temperature is controlled according to the temperature of a plate controlled by spraying cooling water at one or more laminar cooling sections arranged by the segmented laminar cooling 3. The invention adopts a thinning sectional control mode and a longitudinal sectional control mode in the length direction of the strip steel 1 to balance the head-tail temperature difference of the strip steel 1 and the temperature drop uniformity of the strip steel on the cross section. Longitudinally arranged stage I laminar cooling 301 is provided in the first stage of rolling mill tapping, stage II laminar cooling 302 is provided after stage I laminar cooling 301, stage III laminar cooling 303 is provided after stage II laminar cooling 302, and stage IV laminar cooling 304 is provided after stage III laminar cooling 303. Gaps are left between the laminar cooling sections, and the minimum gap for preventing the installation of equipment and the structural interference of the arrangement of the cooling nozzles 3011 is mainly considered. Several partitions of the segmented laminar cooling 3 are in an up-and-down symmetrical relationship, the cooling nozzles 3011 are arranged on the upper surface and the lower surface of the strip steel up and down, and the cooling nozzles 3011 can correspond up and down and also can perform a small amount of staggered spraying modes. The support rollers of the laminar cooling section are omitted, and particularly the cooling nozzles 3011 below the strip steel are in the gaps formed after the support rollers are omitted and cannot be affected by or interfere with the support rollers below. The cooling nozzles 3011 are under the respective control of each segment laminar cooling 3, and can be opened sequentially or opened at intervals, the cooling nozzles 3011 of each segment laminar cooling I-section laminar cooling 301, II-section laminar cooling 302, III-section laminar cooling 303 and IV-section laminar cooling 304 are driven by electromagnetic valves individually, and can be adjusted longitudinally and transversely according to the thickness, width, speed, plate type, cooling water temperature, strip steel wedge and other influencing factors of the strip steel 1. The movable temperature measuring instrument 4 is arranged behind the sectional laminar cooling 3 and in front of the coiling machine pinch roll 5, and the movable temperature measuring instrument 4 can move back and forth to continuously scan and measure the temperature, can also measure the temperature at a fixed point, or can measure the temperature at multiple points so as to achieve the target coiling temperature of the strip steel required by the coiling machine 6.
Fig. 3 is a schematic diagram of a laminar flow cooling nozzle and a lifting and lowering structure, a cooling nozzle 3011 is installed on a nozzle spray beam 3012, the opening or closing of the cooling nozzle 3011 is controlled by an electromagnetic valve in the middle, the nozzle spray beam 3012 is connected with a constant pressure water storage tank 3013, the constant pressure water storage tank 3013 is connected with a lifting electric cylinder 3014, the lifting electric cylinder 3014 is connected with a laminar flow cooling fixed beam 3015, one end of the lifting electric cylinder 3014 is fixed on the laminar flow cooling fixed beam 3015, the height adjustment of each segment of the segmented laminar flow cooling 3 is realized by the expansion and contraction of the lifting electric cylinder 3014, two or more lifting electric cylinders 3014 can be provided, and the height adjustment of the smooth lifting and laminar flow cooling is realized.
The cooling nozzles 3011 are not limited to the direct injection mode, and a spiral cooling mode can be formed on the surface of the strip steel 1 by adopting the swirl nozzle mode, the cooling effect is better, or the direct injection mode and the swirl nozzle mixed installation mode can be adopted, the swirl nozzle is adopted in the middle of the strip steel 1 by adopting the direct injection at the edge of the strip steel, the temperature uniformity on the cross section of the strip steel 1 is achieved, the cooling effect is improved, the more the laminar cooling strip steel 1 in the direction of the coiling machine approaches to the target temperature, and the IV-section laminar cooling 304 belongs to the fine adjustment cooling.
The constant pressure water storage tank 3013 is a secondary water tank for laminar cooling, and it is to ensure the pressure of the cooling water to work normally, and it will not receive the fluctuation of the pressure of the nozzle caused by the pressure fluctuation of the primary water tank, and reduce the risk caused by the fluctuation of the water pressure, and ensure the pressure and flow of the cooling water to cool the strip steel normally, and prevent the variation of the plate type and the uneven cooling of the temperature caused by the local temperature deviation of the strip steel 1.
The constant pressure water storage tank 3013 is connected with the cooling nozzle 3011 through the hose, when the local or individual cooling nozzle is blocked or changed, it can be replaced quickly, it is easy to maintain and maintain, and it improves the maintenance quality of the equipment.
Fig. 4 is a schematic diagram of laminar cooling nozzles and longitudinal partitions of strip steel, the laminar cooling nozzles 3011 and the longitudinal partitions of strip steel 1 are distributed and used under the condition of stricter requirements on mechanical properties of products mainly according to the width and thickness of produced strip steel or special requirements on production of varieties of steel, specific partitions can have 2 or more partitions, and the more the nozzle arrangement in the longitudinal direction of strip steel is increased by refining the partitions, the more accurate control is performed on the temperature uniformity of the cross section of strip steel 1. The illustrated column of the present invention employs 9 zones, namely, a longitudinal nozzle middle zone and a left longitudinal nozzle zone and a right longitudinal nozzle zone arranged on both sides of the middle zone, where left and right represent 4 zones arranged on the left side, a left longitudinal nozzle 1 zone L1, a left longitudinal nozzle 2 zone L2, a left longitudinal nozzle 3 zone L3, and a left longitudinal nozzle 4 zone L4, with respect to the nozzles of each zone of the segmented laminar cooling 3; arranged on the right side are 4 zones, a right longitudinal nozzle 1 zone R1, a right longitudinal nozzle 2 zone R2, a right longitudinal nozzle 3 zone R3, a right longitudinal nozzle 4 zone R4; the total width of the longitudinal nozzles is larger than the limit width of the produced strip steel 1, so that the production of products with various specifications can be ensured, the upper surface and the lower surface of the strip steel can be completely covered by cooling water, and the cooling speed is effectively controlled.
FIG. 5 is a layout structure diagram of mobile temperature measuring instruments, wherein the moving direction of the mobile temperature measuring instrument 4 forms an included angle of 90 degrees with the edge of the strip steel 1, and is vertically arranged above the strip steel 1, a moving beam 401 of the temperature measuring instrument is installed on a temperature measuring instrument driving installation seat 402 fixed on both sides of the strip steel 1, the installation seat 402 is driven by the temperature measuring instrument to drive a screw rod to rotate, a measuring head 403 of the temperature measuring instrument is driven to move on the moving beam 401 of the temperature measuring instrument, so as to measure the temperature of the strip steel 1, the mobile temperature measuring instrument 4 is installed in front of a coiling machine, so as to measure the coiling temperature of the strip steel 1 to meet the target requirement, the requirement on the measurement precision of the temperature is higher, the temperature of the strip steel 1 can be continuously scanned back and forth by the moving beam 401 of the temperature measuring instrument, and can also be measured, adjustments are made in time. The measuring head 403 of the temperature measuring instrument is arranged after laminar cooling, so that the interference and corrosion of water vapor can be avoided, the measuring precision is improved, the service life is prolonged, and the maintenance period is shortened. The temperature measured by the movable temperature measuring instrument 4 is connected with a secondary control system 8 of the production line, and the regulation of a nozzle of laminar cooling, a nozzle mode, height and the like is controlled to form a closed-loop control mode, so that the target coiling temperature is more effectively and accurately controlled, and the temperature balance on the cross section of a product and the temperature control of the head and the tail of the strip steel are improved.
Fig. 6 is a comparison graph of cross-sectional temperatures of laminar cooling longitudinal sectional control strip steels, as shown in the figure, a thin solid line is a temperature curve of closed-loop cooling control strip steels, a thick solid line is a temperature curve of strip steels after traditional cooling, and it can be shown from the trend in the graph that the temperature difference between the middle temperature of strip steels of traditional laminar cooling and the temperature difference between two sides of strip steels is large, when the strip steels meet middle waves with poor plate shapes, the temperature difference between the edge parts of strip steels can be greatly different due to single-side waves and large rolling thickness deviation, which is not beneficial to subsequent production, especially, the product performance of cold-rolled household electrical plates can not be guaranteed, the mechanical performance difference on the cross section is obvious, the transverse extension is not uniform, the strip steels in deep drawing processing overshoot of terminal products are easy to crack. The invention has the advantages that the temperature of the edge of the strip steel of the closed-loop cooling control strip steel temperature curve is obviously increased, the temperature difference between the edge of the strip steel and the middle of the strip steel is reduced, and the obvious improvement is realized.
Fig. 7 is a closed-loop control diagram of a laminar cooling and mobile temperature measuring instrument, which is connected to a secondary control system 8, wherein the strip steel temperature detected by the mobile temperature measuring instrument is used as a reference of the coiling temperature and is fed back to the secondary control system, and the cooling nozzles of each section of laminar cooling 301, 302, 303, 304 of the sectional laminar cooling 3 and the height adjustment of the laminar cooling are controlled, so that the temperature of the strip steel 1 approaches to a coiling target temperature value, and the longitudinal nozzles of the laminar cooling are finely adjusted after the measurement result of the mobile temperature measuring instrument 4 is fed back, thereby reducing the temperature difference between the middle and two sides of the strip steel 1 and improving the uniformity of the transverse temperature of the whole strip steel.
The mobile temperature measuring instrument 4 has 4 control modes, a continuous measurement mode, a multipoint measurement mode, a fixed measurement mode, and a maintenance mode. The continuous measurement mode is that a measuring head moves back and forth to measure the temperature of the cross section direction of the whole strip steel and the continuous change of the longitudinal position, the temperature of the longitudinal length of the strip steel is accurately measured, the measurement data is sent to a secondary control system, the secondary control system controls the segmented laminar cooling 3 after calculating according to the actual change of the strip steel position and the change of the temperature, the cooling effect is adjusted, the range value of the target measurement temperature is established, the control range of a target value is removed from the range value, and the real-time tracking adjustment of a closed-loop control system is formed. The same is true for other multipoint measurement modes and fixed measurement mode control modes.
The maintenance mode is an online maintenance control mode of the fault of the mobile temperature measuring instrument 4, under the mode, the detection of the strip steel temperature is stopped, and the segmented laminar cooling 3 is performed in an empirical mode which is worth semi-automatic; during shutdown maintenance, the mode can be maintained after being positioned at an off-line position, and calibration and maintenance can also be carried out in the production process.
It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should take the description as a whole, and the technical solutions in the embodiments may be appropriately combined to form other embodiments understood by those skilled in the art.
Claims (9)
1. A subdivision cooling control device for cooling a strip surface material is characterized in that nozzles controlled by electromagnetic valves for subdivision, segmentation and areas are arranged in the length direction and the longitudinal direction of the strip surface material, I-section laminar flow cooling (301) arranged longitudinally is arranged at the first stage of rolling mill tapping, II-section laminar flow cooling (302) is arranged after the I-section laminar flow cooling (301), III-section laminar flow cooling (303) is arranged after the II-section laminar flow cooling (302), IV-section laminar flow cooling (304) is arranged after the III-section laminar flow cooling (303), and gaps are reserved among the laminar flow cooling of all the sections; several partitions of the segmented laminar cooling (3) are in an up-and-down symmetrical relationship, cooling nozzles (3011) are arranged on the upper surface and the lower surface of the strip steel up and down, each segment of laminar cooling I-segment laminar cooling (301), II-segment laminar cooling (302), III-segment laminar cooling (303) and IV-segment laminar cooling (304) are driven by an electromagnetic valve independently, the cooling nozzles (3011) are provided with a lifting structure, the cooling nozzles (3011) are arranged on a nozzle spray beam (3012), the middle of the cooling nozzles (3011) is controlled to be opened or closed by the electromagnetic valve, the nozzle spray beam (3012) is connected with a constant pressure water storage tank (3013), the constant pressure water storage tank (3013) is connected with a lifting electric cylinder (3014), the lifting electric cylinder (3014) is connected with a laminar cooling fixed cross beam (3015), one end of the lifting electric cylinder (3014) is fixed on the laminar cooling fixed cross beam (3015), the height adjustment of each section of the segmented laminar cooling (3) is realized through the expansion and contraction of the lifting electric cylinder (3014).
2. A subdivided controlled cooling device for cooling of strip material according to claim 1, characterized in that a number of cooling nozzles (3011) is a number of staggered nozzles.
3. A subdivided controlled cooling device for cooling of strip material according to claim 1, characterized by a plurality, even number, of lifting electric cylinders (3014).
4. A subdivided cooling control apparatus according to claim 1 for cooling a strip material, wherein 1 or more than two strip temperature detectors are provided in front of the coiler for detecting the strip widthwise temperature at any time and the lengthwise temperature of the whole coil, and the flow rate of the segmented cooling control apparatus for adjusting laminar cooling, the number of nozzles to be controlled, and the nozzle opening/closing area are established by connecting a database.
5. A subdivided controlled cooling device for cooling strip material according to claim 4, characterized in that the strip temperature detector is a mobile temperature measuring device (4), the measuring head (403) of the temperature measuring device is mounted on the mobile beam (401) of the temperature measuring device and is mobile, and the two ends of the mobile beam (401) of the temperature measuring device are mounted on the driving mounting base (402) of the temperature measuring device.
6. A subdivided controlled cooling device for cooling of strip material according to claim 1, characterized in that the cooling nozzles (3011) are of the direct injection type or of the swirl nozzle type.
7. A subdivided controlled cooling device for cooling strip material according to claim 6, characterized in that the edges of the strip (1) are in direct injection mode and swirl nozzles are used in the middle of the strip (1).
8. A subdivided controlled cooling device for cooling of web materials according to claim 1, characterised by the constant pressure water tank (3013) being connected to the cooling nozzles (3011) by means of hoses.
9. A subdivided controlled cooling device for cooling of strip material according to claim 1, characterized in that there are 9 longitudinal nozzle divisions of laminar cooling nozzles, respectively a longitudinal nozzle middle section and left and right longitudinal nozzle sections arranged on both sides of the middle section, where left and right represent 4 sections arranged on the left with respect to the nozzles of 3 sections, left longitudinal nozzle 1 section L1, left longitudinal nozzle 2 section L2, left longitudinal nozzle 3 section L3, left longitudinal nozzle 4 section L4; arranged on the right side are 4 zones, right longitudinal nozzle 1 zone R1, right longitudinal nozzle 2 zone R2, right longitudinal nozzle 3 zone R3, right longitudinal nozzle 4 zone R4.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921755551.3U CN211564054U (en) | 2019-10-18 | 2019-10-18 | Subdivision cooling control device for cooling surface material |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921755551.3U CN211564054U (en) | 2019-10-18 | 2019-10-18 | Subdivision cooling control device for cooling surface material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110695099A (en) * | 2019-10-18 | 2020-01-17 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Subdivision cooling control device and method for cooling surface material |
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- 2019-10-18 CN CN201921755551.3U patent/CN211564054U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110695099A (en) * | 2019-10-18 | 2020-01-17 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Subdivision cooling control device and method for cooling surface material |
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