Thin plate strip surface temperature difference control device
By using feedback control of the spray assembly and temperature sensor, the problem of excessive temperature difference on the surface of the strip in the continuous casting and rolling system of thin strip was solved, achieving temperature equalization and impurity removal, extending the life of the rolls, improving production efficiency, and realizing wastewater recycling.
Patent Information
- Application Number
- CN202520170285.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-25
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2035-01-25
AI Technical Summary
In thin strip continuous casting and rolling systems, excessive temperature differences on the strip surface lead to severe wear of the rolls, affecting production efficiency and equipment operating cycles.
The system employs a spray assembly and temperature sensor in conjunction with a PLC controller. By detecting the temperature of the billet and the medium plate, it controls the spray water flow rate and spray position to achieve feedback regulation, balance the surface temperature of the plate and strip, and sets an outer arc spray head to remove impurities such as oxide scale from the lower surface of the billet.
It effectively controls the temperature difference on the surface of the strip, extends the life of the rolls, stabilizes the production rhythm, improves production efficiency, and enables the recycling of wastewater, cleans impurities on the lower surface of the billet, and avoids equipment damage.
Smart Images
Figure CN223518283U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to continuous casting device technical field, especially a thin plate strip surface temperature difference control device. BACKGROUND
[0002] In the thin plate strip continuous casting and rolling system, the plate strip surface temperature difference is the important condition related to whether the rolling equipment can stably run, once the slab surface temperature difference is out of limit, aggravates the roll wear, reduces the life, directly restricts the production rhythm of production line and equipment operation cycle. UTILITY MODEL CONTENTS
[0003] The utility model provides a kind of thin plate strip surface temperature difference control device, to solve the technical problems of roll wear caused by plate strip surface temperature difference, affect production efficiency and quality, to realize above-mentioned purpose, the technical scheme as follows is used:
[0004] A kind of thin plate strip surface temperature difference control device, characterized by, comprising:
[0005] Spray component, including multiple groups of parallelly connected inner arc spray pipe, flow regulating valve and flowmeter and spray head being arranged on inner arc spray pipe, multiple groups of inner arc spray head are distributed along the slab width direction and are located above slab;
[0006] Waste water collecting device, is arranged below slab, for collecting after spraying waste water;
[0007] Waste water tank, inlet is connected with the water outlet of waste water collecting device, and the water outlet of waste water tank is connected with switch valve and is connected with multiple groups of inner arc spray pipe;
[0008] Temperature sensor, is arranged at continuous casting machine outlet, for detecting slab temperature;
[0009] Scanning type temperature measurement system, is arranged between roughing mill and finishing mill, for detecting the temperature of multiple points corresponding to multiple groups of inner arc spray head on the width direction of the upper surface of middle plate between the two;
[0010] PLC controller, the temperature sensor, temperature measuring instrument and flowmeter are connected with the signal input end of PLC controller, and the switch valve and flow regulating valve are connected with the signal output end of controller.
[0011] Further, the spray component further includes multiple groups of outer arc spray pipes connected in parallel with the water outlet of waste water tank, and outer arc spray heads located on the lower surface of the slab are arranged on the outer arc spray pipes.
[0012] Further, the inlet of the waste water tank is further connected with a condensate waste water pipeline of a continuous casting and steam exhaust system.
[0013] Further, the temperature sensor is an infrared temperature sensor.
[0014] Further, the inner arc spray pipe is further provided with a pressure gauge.
[0015] The utility model discloses the beneficial at has:
[0016] 1, through the detection continuous casting machine export place's casting blank temperature, to control the opening and closing of switch valve to through the inner arc spray head to the casting blank upper surface spray cooling, to realize the balance of slab surface temperature, and through the detection roughing mill export place's medium plate temperature, to control the opening of flow regulating valve size, adjust the spray water flow in the inner arc spray pipe, realize the feedback type regulation of plate strip, improve the temperature control effect of plate strip surface, through the control thin plate strip surface temperature difference, prolong the roll life stable production rhythm;
[0017] 2, through setting up the outer arc spray head to the casting blank lower surface spray, can eliminate the bright band, scale of casting blank lower surface etc., avoid due to the casting blank lower surface impurity too much, lead to enter roughing mill and carry out processing to the damage of roughing mill, and through the rolling line feedback outer arc scale and roll mark position, can adjust corresponding outer arc spray head water amount, improve the impurity cleaning effect;
[0018] 3, set up spray water recovery device at continuous casting export, introduce the waste water of spray to waste water tank, collect the condensate waste water of continuous casting steam exhaust system simultaneously and introduce waste water tank, make up the water amount loss in the process of spraying, realize waste water recycling. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 It is structure schematic diagram for the utility model
[0020] Figure 2 It is spray head distribution schematic diagram
[0021] Among them:
[0022] 1-waste water tank, 2-switch valve, 3-spray pipe, 4-flow meter, 5-flow regulating valve, 6-PLC controller, 7-waste water collection device, 8-temperature sensor, 9-continuous casting machine, 10-roughing mill, 11-precision rolling mill, 12-scanning type temperature measurement system, 13-continuous casting steam exhaust system condensate waste water, 14-pressure gauge, 15-casting blank, 16-medium plate, 17-inner arc spray head, 18-outer arc spray head. DETAILED DESCRIPTION
[0023] Exemplary embodiments of the present disclosure will be described below in greater detail with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be accurately conveyed to those skilled in the art.
[0024] In the description of the utility model, it needs to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the view direction or positional relationship, and are only for the convenience of describing the utility model, and do not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.
[0025] As shown in Figure 1 and Figure 2 A kind of sheet strip surface temperature difference control device, including spraying component, wastewater collection device, wastewater tank, control system, between continuous casting machine 9 and roughing mill 10 is casting blank 15, between roughing mill 10 and finishing mill 11 is middle plate 16, the spraying component includes multiple groups of inner arc spraying pipe and multiple groups of outer arc spraying pipe, respectively located the upper and lower surfaces of casting blank 15, the wastewater collection device is arranged below casting blank 15, for collecting spraying wastewater, and outlet is connected with the water inlet of wastewater tank 1, the water inlet of wastewater tank 1 is also connected with continuous casting steam exhaust system condensate water 13.
[0026] Specifically, the outlet of wastewater tank 1 is connected with switch valve 2, multiple groups of inner arc spraying pipes 3 are connected in parallel, flow meter 4, flow regulating valve 5, pressure gauge 14 and inner arc spraying head 17 are sequentially arranged on each group of inner arc spraying pipes 3, multiple groups of inner arc spraying heads 17 are evenly distributed along the width direction of casting blank 15, and the inner arc spraying head 17 is located above the casting blank 15 at the outlet; similarly, multiple groups of outer arc spraying pipes (not shown in the figure) are connected in parallel, flow meter 4, flow regulating valve 5, pressure gauge 14 and outer arc spraying head 18 are sequentially arranged on each group of outer arc spraying pipes, and multiple groups of outer arc spraying heads 18 are distributed along the width direction of casting blank 15 and located below the casting blank 15 at the outlet.
[0027] Wastewater collection device 7 is arranged below casting blank 15, for collecting wastewater after spraying of spraying component, and the outlet of wastewater collection device 7 is connected with the water inlet of wastewater tank 1 through connecting pipe, and the water inlet of wastewater tank 1 is also connected with continuous casting steam exhaust system condensate water 13, by recycling the condensate water of continuous casting steam exhaust system and the wastewater of spraying component, the temperature of casting blank at the outlet of continuous casting machine 9 is adjusted, so as to control the temperature difference of sheet strip, and the recycling of wastewater is realized.
[0028] The control system comprises a PLC controller 6, a temperature sensor 8 arranged at the outlet of the continuous casting machine 9 for detecting the temperature of the upper end face of the casting blank 15 in the width direction, a scanning temperature measurement system 12 arranged above the slab 16 between the rough rolling mill 10 and the finishing rolling mill 11, the scanning temperature measurement system 12 adopts a land scanning pyrometer for detecting the temperature of multiple points of the upper end face of the slab 16 in the width direction at the outlet of the rough rolling mill 10, and the multiple point temperature corresponds to the position of the inner arc spray head 17, the temperature sensor 8, the scanning temperature measurement system 12, the flow meter 4 and the pressure gauge 14 are connected with the signal input end of the PLC controller 6, and the on-off valve 2 and the flow regulating valve 5 are connected with the signal output end of the PLC controller 6, the temperature parameter detected by the temperature sensor 8 is taken as the initial on-off control condition of the on-off valve 2, and the temperature parameter detected by the scanning temperature measurement system 12 is taken as the control parameter of the flow regulating valve 5.
[0029] When the device is used to control the temperature difference of the continuous casting strip, the principle is as follows:
[0030] The temperature at the outlet of the continuous casting machine 9 is detected by the temperature sensor 8, when the temperature exceeds the preset starting temperature, the PLC controller 6 controls the on-off valve 2 to open, the inner arc spray head 17 and the outer arc spray head 18 are used to spray the upper and lower surfaces of the casting blank 15 respectively, the inner arc spray head 17 mainly plays a role of cooling and reducing the temperature of the casting blank 15, and the outer arc spray head 18 mainly sprays and flushes the lower surface of the casting blank 15, so as to eliminate the bright band and the iron oxide skin on the surface of the casting blank 15, and avoid the rough rolling mill failure caused by the iron oxide skin; meanwhile, the PLC controller 6 receives the multiple point temperature signals of the upper end face of the slab 16 in the width direction detected by the scanning temperature measurement system 12, the temperature of the slab 16 at the outlet of the rough rolling mill 10 is detected, the PLC controller 6 controls the opening degree of the flow regulating valve 5 on the inner arc spray pipe 3, the spray flow in each pipe is adjusted adaptively, so as to improve the cooling effect of the casting blank 15, realize the temperature balance of the surface of the strip, and control the opening degree of the flow regulating valve 5 on the outer arc spray pipe according to the position of the iron oxide skin and the roll mark on the outer surface of the strip fed back by the subsequent rolling line, so as to control the spray flow of the outer arc spray head 18, and eliminate the bright band and the iron oxide skin on the surface of the slab.
[0031] The above only describes the preferred embodiments of the present application, and it should be pointed out that those skilled in the art can make some improvements without departing from the principles of the present application, and these improvements should also be regarded as the protection scope of the present application.
Claims
1. A thin strip surface temperature difference control device, characterized by, The application relates to a continuous casting temperature control system. The application relates to a continuous casting temperature control system. The application relates to a continuous casting temperature control system. The application relates to a continuous casting temperature control system. The application relates to a continuous casting temperature control system. The application relates to a continuous casting temperature control system. The application relates to a continuous casting temperature control system.
2. The thin strip surface temperature difference control apparatus according to claim 1, characterized by The application relates to a continuous casting temperature control system.
3. The thin strip surface temperature difference control apparatus according to claim 1, wherein The application relates to a continuous casting temperature control system.
4. The thin strip surface temperature difference control apparatus of claim 1, wherein The application relates to a continuous casting temperature control system.
5. The thin strip surface temperature difference control apparatus of claim 1 wherein, The application relates to a continuous casting temperature control system. The application relates to a continuous casting temperature control system. The application relates to a continuous casting temperature control system. The application relates to a continuous casting temperature control system. The application relates to a continuous casting temperature control system. The application relates to a continuous casting temperature control system. The application relates to a continuous casting temperature control system. The application relates to a continuous casting temperature control system. The application relates to a continuous casting temperature control system. The application relates to a continuous casting temperature control system. The application relates to a continuous casting temperature control system. The application relates to a continuous casting temperature control system. 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