Electromagnetic stirring device

Abstract

The utility model provides a kind of electromagnetic stirring device.The electromagnetic stirring device includes outlet box, body, bearing block being equipped in the both ends of the body and the water outlet cylinder being connected in two the outer end of the bearing block, the outer end of a water outlet cylinder is connected with the outlet box, and the outer end of another water outlet cylinder is installed with water outlet baffle;The body includes non-magnetic roller sleeve and the inductor being placed in the non-magnetic roller sleeve, the inductor includes framework and the winding portion being wound on the outer periphery of the framework, and the cable line on the winding portion is connected after short-circuiting in the non-magnetic roller sleeve and is drawn from the outlet box.The utility model changes the winding mode and winding process of winding, realizes that winding portion changes from double-side outlet to single-side outlet;Realize that high-temperature cable line and nitrogen metal flexible hose are distributed and arranged in the same direction, save the wiring space of electromagnetic stirring device on fan-shaped section, facilitate wiring and pipe, and facilitate the installation of pipeline route.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic metallurgical technology for the secondary cooling zone of continuous casting, and in particular to an electromagnetic stirring device. Background Technology

[0002] Improving quality, increasing efficiency, and reducing emissions are major trends in the development of the steel industry. Electromagnetic stirring and electromagnetic flow control have long been among the most practical technologies for quality control in continuous casting processes and have been widely applied.

[0003] To improve the internal quality of the cast billet, adding an electromagnetic stirring device in the secondary cooling zone can enhance the flow of molten steel within the billet, thereby effectively reducing the superheat of the molten steel inside the continuously cast billet, uniformizing the billet shell thickness, increasing the equiaxed crystal ratio, and improving center segregation. Using electromagnetic stirring can appropriately increase the casting speed; it is generally believed that stirring can increase the casting speed by 20%, and at least a 10% increase can be guaranteed.

[0004] The continuous casting machine is compact in design and space is limited. When replacing the free roller with an electromagnetic stirring device, the electromagnetic stirring device contains electrical, mechanical, cooling water and other supporting equipment. The on-site operating environment is harsh. After two to three months of operation, it is necessary to take it offline for inspection and maintenance periodically.

[0005] Existing electromagnetic roller mixing devices such as Figure 1 As shown, it includes a main body 1, bearing seats at both ends of the main body 1, water outlet cylinders 3 respectively connected to the outer ends of the two bearing seats 2, and cable outlet boxes 4 respectively connected to the outer ends of the two water outlet cylinders 4. Figure 2 As shown, each junction box 4 has two electrical connection ports 41, symmetrically arranged on both sides of the center line of the main body 1. The cables emerge from the junction boxes 4 at both ends, requiring additional wiring space and water / electricity interfaces on both sides of the continuous casting machine. This necessitates significant modifications to the fan-shaped section, greatly increasing modification costs. Furthermore, the arrangement of four high-temperature cables (six high-temperature cables for a pair of electromagnetic stirring devices), two nitrogen pipes, and two water pipes is inconvenient and complicates subsequent maintenance. Therefore, while junction boxes are installed on both sides, environmental and space constraints result in complex installation, difficult maintenance, and rapid insulation degradation due to moisture. Utility Model Content

[0006] The purpose of this invention is to provide an electromagnetic stirring device that saves wiring space on the sector section and facilitates wiring and pipe routing.

[0007] The technical solution of this utility model is: an electromagnetic stirring device, including a cable outlet box, a main body, bearing seats at both ends of the main body, and water outlet cylinders respectively connected to the outer ends of the two bearing seats. The outer end of one water outlet cylinder is connected to the cable outlet box, and the outer end of the other water outlet cylinder is equipped with a water outlet baffle. The main body includes a non-magnetic roller sleeve and a sensor placed inside the non-magnetic roller sleeve. The sensor includes a frame and a winding portion that rotates around the outer periphery of the frame. The cable on the winding portion is short-circuited inside the non-magnetic roller sleeve and then passes through the cable outlet box.

[0008] Preferably, at least one pressure groove is provided on the lower side of the frame, the short-circuited portion of the cable is pressed into the pressure groove, and the cable enters the outlet box from the pressure groove.

[0009] Preferably, the number of pressure grooves is two, and they are symmetrically distributed at an angle of less than or equal to 120°.

[0010] Preferably, the frame includes a plurality of stacked silicon steel sheets and pins for fixing the stacked silicon steel sheets, and the pressure groove is provided on the frame.

[0011] Preferably, the sensor further includes a magnetic shielding ring disposed on the lower side of the frame, the magnetic shielding ring covering the pressure groove.

[0012] Preferably, the cross-section of the skeleton is circular, square, or rhomboid.

[0013] Preferably, the junction box is provided with three electrical connection ports, and the cable passes through the three electrical connection ports.

[0014] Preferably, the electrical connection port includes a waterproof sleeve, a high-temperature cable, and a cable connector. One end of the high-temperature cable is connected to the junction box through the waterproof sleeve, and the other end of the high-temperature cable is connected to the cable connector.

[0015] Preferably, the outlet box is provided with a nitrogen connector, which is connected to the interior of the main body.

[0016] Compared with related technologies, the beneficial effects of this utility model are as follows:

[0017] I. This utility model changes the winding method and winding process of the winding to change the winding part from double-sided to single-sided winding; it realizes the distribution and arrangement of high-temperature cables and nitrogen metal hoses running in the same direction, saves wiring space of electromagnetic stirring device on sector section, facilitates wiring and pipe routing, and facilitates pipe routing installation.

[0018] Second, this utility model short-circuits the winding part inside the main body and optimizes the wiring method, which can effectively improve the speed and convenience of the electromagnetic roller stirring device, improve the safety of the entire system, and reduce maintenance costs.

[0019] Third, the electromagnetic stirring device of this utility model has fewer outlet box cable connectors and nitrogen gas connectors, which can reduce the probability of failure and improve the production efficiency of continuous casting machine. Attached Figure Description

[0020] Figure 1 A schematic diagram of an existing electromagnetic stirring device;

[0021] Figure 2 for Figure 1 A schematic diagram of projection A in the diagram;

[0022] Figure 3 A schematic diagram of the electromagnetic stirring device provided by this utility model;

[0023] Figure 4 This is a schematic diagram of the internal structure of the main body;

[0024] Figure 5 This is a schematic diagram of the axial projection of the skeleton;

[0025] Figure 6 This is a schematic diagram of the radial projection of the skeleton;

[0026] Figure 7 for Figure 3 A schematic diagram of the B-direction projection in the diagram;

[0027] Figure 8 This is a schematic diagram of the second structure of the cable connector for the junction box.

[0028] In the attached diagram: 1. Body; 11. Sensor; 111. Frame; 1111. Silicon steel sheet; 1112. Pin; 1113. Pressure groove; 112. Winding part; 113. Magnetic shielding ring; 12. Non-magnetic roller sleeve; 2. Bearing seat; 3. Water outlet cylinder; 31. Water outlet pipe; 4. Terminal box; 41. Electrical connection port; 411. Waterproof plug sleeve; 412. High temperature cable; 413. Cable connector; 42. Nitrogen connector; 5. Water outlet baffle. Detailed Implementation

[0029] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the present invention can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" appearing below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0030] like Figure 3As shown, the electromagnetic stirring device provided in this embodiment includes a junction box 4, a main body 1, bearing seats 2 located at both ends of the main body 1, and water outlet cylinders 3 respectively connected to the outer ends of the two bearing seats 2. The outer end of one water outlet cylinder 3 is connected to the junction box 4, and the outer end of the other water outlet cylinder 3 is equipped with a water outlet baffle 5. To ensure better performance of the circulating cooling water circuit, one water outlet cylinder 3 is designed on each of the left and right sides. The junction box 4 is only provided at one end, achieving single-sided operation, and the water outlet cylinder 3 on the other side is equipped with a water outlet baffle 5, thereby appropriately shortening the length of the water outlet pipe 31 and saving installation space.

[0031] like Figure 4 As shown, the main body 1 includes a non-magnetic roller sleeve 12 and a sensor 11 placed inside the non-magnetic roller sleeve 12. The sensor 11 includes a frame 111, a winding portion 112 that wraps around the outer periphery of the frame 111, and a magnetic shielding ring 113 disposed on the lower side of the frame 111.

[0032] like Figure 5 , Figure 6 As shown, the skeleton 111 is composed of several non-oriented or oriented silicon steel sheets 1111 stacked together. Oriented silicon steel sheets refer to those whose grains are basically oriented in one direction (usually the rolling direction), forming a cubic structure, giving it strong directional magnetism—the lowest iron loss and highest magnetic permeability in the rolling direction. Non-oriented silicon steel sheets are a silicon-iron alloy with extremely low carbon content, and its silicon content is usually between 0.8% and 4.8%. After deformation and annealing, the grains of this material exhibit an irregular orientation distribution, hence the name "non-oriented".

[0033] Several silicon steel sheets 1111 are radially stacked and fixed by pins 1112, wherein multiple pins 1112 are spaced apart axially on the silicon steel sheets 1111. Finally, the cross-section of the stacked silicon steel sheets 1111 is machined into a circle, square, rhombus, or other shapes (e.g., Figure 6 As shown), this ultimately forms a skeleton 111. The lower side of the skeleton 111 has two pressure grooves 1113 with an included angle of less than or equal to 120°. The pressure grooves 1113 are of equal length to the skeleton 111 (e.g., ...). Figure 5 (As shown). After the skeleton 111 is impregnated with enamel, the wire is sintered and wound onto the skeleton 111 by the pressure groove 1113. The cable on the winding portion 112 is short-circuited inside the non-magnetic roller sleeve 12. The short-circuited portion of the cable is pressed into the pressure groove 1113, and the cable enters the electrical connection port 41 in the outlet box 4 from the pressure groove 1113. Short-circuiting is an electrical phase sequence star connection, referring to a star connection in a three-phase circuit, also known as a Y-connection. In this connection method, the three terminals of the three-phase power supply are respectively connected to the three phases of the load, forming a star-like structure, and it is an open circuit.

[0034] like Figure 2 As shown, existing electromagnetic stirring devices have two electrical connection ports 41 on each side (four in total), and the electrical phase sequence of a pair of electromagnetic stirring devices is short-circuited externally. This invention achieves a single-sided configuration, short-circuiting the winding portion 112 internally. Therefore, as... Figure 7 As shown, only three electrical connection ports 41 are needed in the single-sided junction box 4, saving wiring space for the electromagnetic stirring device on the sector section, facilitating wiring and conduit routing, and simplifying pipeline installation. Figure 3 As shown, the outlet box 4 is provided with a nitrogen connector 42, which is connected to the interior of the main body 1.

[0035] like Figure 8 As shown, the electrical connection port 41 includes a waterproof sleeve 411, a high-temperature cable 412, and a cable connector 413. One end of the high-temperature cable 412 is connected to the outlet box 4 through the waterproof sleeve 411, and the other end of the high-temperature cable 412 is connected to the cable connector 413.

[0036] This invention reduces the number of outlet boxes 4, high-temperature cables 412, nitrogen pipes, etc. Based on a pair of electromagnetic stirring devices, the number of outlet boxes 4 is reduced from four to two, the number of high-temperature cables 412 is reduced from six to three, and the number of nitrogen pipes is reduced from two to one, saving nearly half of the installation space. This effectively improves the speed and convenience of setting up the electromagnetic roller stirring device, enhances the safety of the entire system, and reduces maintenance costs. In addition, the reduction of electrical connection ports 41 in outlet boxes 4 reduces the probability of failure and improves the production efficiency of continuous casting machines, enabling its widespread application in large steel mills where quality improvement and speed increase are required.

[0037] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An electromagnetic stirring device comprising an outlet box (4), a body (1), bearing seats (2) arranged at both ends of the body (1), and water outlet cylinders (3) connected to the outer ends of the two bearing seats (2) respectively, characterized in that, One of the water outlet cylinders (3) is connected to the outlet box (4) at its outer end, and the other water outlet cylinder (3) is fitted with an outlet baffle (5) at its outer end. The body (1) includes a non-magnetic roller sleeve (12) and a sensor (11) placed inside the non-magnetic roller sleeve (12). The sensor (11) includes a frame (111) and a winding portion (112) that winds around the outer periphery of the frame (111). The cable on the winding portion (112) is short-circuited inside the non-magnetic roller sleeve (12) and then passes through the outlet box (4).

2. The electromagnetic stirring device of claim 1, wherein At least one pressure groove (1113) is provided on the lower side of the frame (111), the short-circuited part of the cable is pressed into the pressure groove (1113), and the cable enters the outlet box (4) from the pressure groove (1113).

3. The electromagnetic stirring device of claim 2, wherein The number of pressure grooves (1113) is two, and they are symmetrically distributed at a angle of less than or equal to 120°.

4. The electromagnetic stirring device according to claim 2, characterized in that, The frame (111) includes a plurality of stacked silicon steel sheets (1111) and a pin (1112) for fixing the plurality of stacked silicon steel sheets (1111), and the pressure groove (1113) is provided on the frame (111).

5. The electromagnetic stirring device according to claim 2, characterized in that, The sensor (11) also includes a magnetic shielding ring (113) disposed on the lower side of the frame (111), the magnetic shielding ring (113) covering the pressure groove (1113).

6. The electromagnetic stirring device according to claim 1, characterized in that, The cross-section of the skeleton (111) is circular, square or rhomboid.

7. The electromagnetic stirring device according to claim 1, characterized in that, The junction box (4) is provided with three electrical connection ports (41), and the cable passes through the three electrical connection ports (41).

8. The electromagnetic stirring device according to claim 7, characterized in that, The electrical connection port (41) includes a waterproof sleeve (411), a high-temperature cable (412), and a cable connector (413). One end of the high-temperature cable (412) is connected to the outlet box (4) through the waterproof sleeve (411), and the other end of the high-temperature cable (412) is connected to the cable connector (413).

9. The electromagnetic stirring device according to claim 1, characterized in that, The outlet box (4) is provided with a nitrogen connector (42), which is connected to the interior of the main body (1).

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