Roller type secondary cooling electromagnetic stirring efficiency measuring device

Abstract

The utility model discloses a roller type secondary cooling electromagnetic stirring efficacy measuring device. Comprising a first folding plate and a second folding plate, first sliding devices are movably arranged on the first folding plate, first slender rods are installed in the first sliding devices at the two ends in a penetrating mode, second sliding devices are movably arranged on the first slender rods, and second slender rods are installed on the second sliding devices in a penetrating mode; the bottom end of the second slender rod is fixedly connected with a gauss meter probe; a vertical plate is fixedly arranged at the bottom of the first folding plate, and a clamping mechanism connected with the stirring roller in a clamped mode is arranged at the bottom end of the vertical plate. According to the utility model, the actual effect of the roller stirrer is measured and checked through the first slender rod and the second slender rod which are movably adjusted, so that the actual action effect of electromagnetic stirring and possible differences among flows are mastered, and the installation and connection are carried out through the installation mechanism, so that the equipment is convenient to install and connect; and multi-point measurement and inspection are realized.

Description

TECHNICAL FIELD

[0001] The utility model belongs to continuous casting technical field especially relates to a roller type two -stage cooling electromagnetic stirring efficacy measuring device. BACKGROUND

[0002] With the rapid development of science and technology, the quality requirement of each steel industry to the plate is increasingly strict, and the two -stage cooling electromagnetic stirring technology is continuously developed and applied in the steel enterprise, and becomes the important means of developing new varieties. Its metallurgical principle is: install the corresponding type electromagnetic stirring device at the two -stage cooling area of the continuous casting machine, utilize the alternating magnetic field excited by the alternating current, induce the induced current of the molten steel, the interaction of the induced current and the magnetic field produces electromagnetic force, the electromagnetic force is the volume force, can directly act on the volume element of the molten steel, strengthens the flow, heat transfer and mass transfer etc. of the metal liquid in the casting blank, thereby obviously improves the cleanliness of the steel product, reduces the appearance probability of the center porosity, center segregation, center shrinkage and intermediate crack etc. of the casting blank, and further obtains higher quality steel. The two -stage cooling electromagnetic stirrer mainly has three types, respectively for roller type, magnetic pole insertion type and roller rear type. Among them, the roller type two -stage cooling electromagnetic stirrer is widely used due to the advantages of large magnetic force, flexible installation position etc.

[0003] Reference the existing patent number 202010172983.2, a kind of continuous casting two -stage cooling section roller type pulse current electromagnetic stirring device and method, including two electromagnetic stirring rollers (2), the middle part of each electromagnetic stirring roller (2) is provided with a pair of iron core (3), a certain distance is provided between two iron cores (3) and the axis of the two is located on the same horizontal line, each iron core (3) is wound with a group of spiral coils (4) outside, the axis of coil (4) and iron core (2) is same, and coil (4) is connected with a cooling device (6);Coil (4) is covered with a magnetic shielding ring (5) outside, the magnetic shielding ring (5) is cylindrical, and a long strip-shaped notch (5a) parallel to the axis is provided on it, and the notch (5a) faces the continuous casting blank surface to be stirred.The advantages of the present application are that the existing device is directly transformed, no need to buy equipment again, the operation method is simple, the carbon segregation degree in the casting blank is reduced, the white band phenomenon is avoided, and the quality of the slab is improved.

[0004] However, the prior art has some problems: with the long-term use of electromagnetic stirrer, its various working indexes can not reach the ideal state, and the existing measuring device is inconvenient to install when in use, the installation method is more troublesome, and it is very inconvenient, therefore we propose a roller type two -stage cooling electromagnetic stirring efficacy measuring device. UTILITY MODEL CONTENTS

[0005] The utility model discloses a roller type two cold electromagnetic stirring efficacy measuring device, and the actual efficacy of the roller type stirrer is measured and checked through the first thin rod and the second thin rod of mobile adjustment, so that the actual effect of electromagnetic stirring and possible differences among various flows can be mastered, and the installation connection of equipment can be facilitated through the installation mechanism, and multi-point measurement and checking can be realized.

[0006] The utility model discloses a roller type two cold electromagnetic stirring efficacy measuring device, and the actual efficacy of the roller type stirrer is measured and checked through the first thin rod and the second thin rod of mobile adjustment, so that the actual effect of electromagnetic stirring and possible differences among various flows can be mastered, and the installation connection of equipment can be facilitated through the installation mechanism, and multi-point measurement and checking can be realized.

[0007] The bottom of the first folding board is fixedly provided with a vertical plate, and the bottom end of the vertical plate is provided with a clamping mechanism clamped and connected with the stirring roller.

[0008] Specifically, the first folding boards are movably connected through dampers, the second folding boards are connected through dampers, and the first folding board at one end and the second folding board at one end are connected through a damper.

[0009] Specifically, the first sliding device comprises a U-shaped shell clamped on the first folding board, a plurality of supporting balls are movably arranged at the upper end of the inside of the U-shaped shell, and a plurality of contact balls are movably arranged on the inside of the bottom of the U-shaped shell.

[0010] Specifically, the clamping mechanism comprises a mounting shell, and a first spring is arranged at the inside bottom end of the mounting shell through a limiting ring.

[0011] Specifically, the upper end of the first spring is fixedly connected with a first clamping plate, and the first clamping plate is movably connected with a second clamping plate through an M-shaped elastic sheet.

[0012] Specifically, the upper part of the first clamping plate is fixedly provided with a clamping strip, the bottom end of the M-shaped elastic sheet is fixedly connected in the inside of the clamping strip, the upper end of the second clamping plate is fixedly connected with a connecting rod, the top end of the connecting rod is fixedly connected with a pressing plate, and the connecting rod penetrates the upper end of the mounting shell.

[0013] Specifically, the upper end of the M-shaped elastic sheet is movably clamped in the moving cavity of the second clamping plate, the inside of the second clamping plate is fixedly provided with a first baffle, the upper end of the M-shaped elastic sheet is fixedly provided with a second baffle, and the first baffle and the second baffle are fixedly connected with a second spring.

[0014] Specific, the inside of the mounting shell is provided with a clamping interface, the upper end of the M-shaped elastic sheet is clamped in the inside of the clamping interface, and the opposite end faces of the first clamping plate and the second clamping plate are fixedly provided with anti-skid rubber strips.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] The utility model discloses a first folding plate and second folding plate with a scale can be folded, which is convenient for folding, using and storage, the first thin rod is connected with the first folding plate through the first sliding device, and the sliding direction of the first sliding device is the same as the thickness direction of the casting blank, the second thin rod is connected with the first sliding device through the second sliding device, and the direction is parallel to the direction of pulling the blank, the sliding directions of the first sliding device and the second sliding device are the width direction and the direction of pulling the blank, which is convenient for measuring the magnetic induction intensity of different points in the stirring roller action area.

[0017] The first sliding device slides and adjusts on the first folding plate through the supporting ball and the contact ball, which maintains stable connection and improves the sliding effect, and is convenient for multi-point measurement in the stirring roller action area.

[0018] The clamping mechanism is connected with the stirring roller through the clamping mechanism, which is convenient for clamping and installing the equipment, realizes quick installation and disassembly of the equipment, and can maintain the stability of the clamping connection, and the first clamping plate and the second clamping plate are supported by the M-shaped elastic sheet in the clamping mechanism, and the first clamping plate is pushed by the first spring, so that the first clamping plate and the second clamping plate can be clamped on the stirring roller, the parallel stability of the equipment and the stirring roller is maintained, and the second clamping plate is pushed by the pressing plate and the connecting rod, so that the end surface of the M-shaped elastic sheet is clamped in the clamping interface, and the first clamping plate and the second clamping plate can be stably clamped and fixed.

[0019] Other features and advantages of the utility model will become clear through the following detailed description of exemplary embodiments of the utility model with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the structural schematic diagram provided by the utility model;

[0021] Figure 2 It is the structural schematic diagram provided by the utility model; Figure 1 It is the sectional view of A in the utility model;

[0022] Figure 3 It is the clamping mechanism schematic diagram provided by the utility model;

[0023] Figure 4 It is the sectional view of the clamping mechanism provided by the utility model;

[0024] Figure 5 is the inside plan view of the clamping mechanism provided by the utility model;

[0025] Figure 6 is the inside bottom view of the clamping mechanism provided by the utility model;

[0026] Figure 7 is the inside bottom view of the clamping mechanism provided by the utility model Figure 6 is the enlarged view of B in the middle;

[0027] Figure 8 is the distribution schematic view of the measuring point provided by the utility model;

[0028] Figure 9 is the magnetic induction intensity schematic view of the center line of the electromagnetic roller S1 on the same plane provided by the utility model.

[0029] In the figure: 1, first folding plate; 2, second folding plate; 3, first sliding device; 301, U-shaped shell; 302, supporting ball; 303, contact ball; 4, first thin rod; 5, second sliding device; 6, second thin rod; 7, Gauss meter probe; 8, damper; 9, clamping mechanism; 901, mounting shell; 902, clamping interface; 903, first spring; 904, first clamping plate; 905, M-shaped elastic sheet; 906, second clamping plate; 907, connecting rod; 908, pressing plate; 909, limiting ring; 910, anti-skid rubber strip; 911, clamping strip; 912, moving cavity; 913, first baffle; 914, second spring; 915, second baffle; 10, vertical plate; 11, positioning frame. DETAILED DESCRIPTION

[0030] In order to further understand the utility model content, characteristics and efficacy of the utility model, the following examples are cited, and the detailed description is as follows in cooperation with the drawings.

[0031] As shown in Figures 1 to 7 The utility model embodiment provides a roller type two cold electromagnetic stirring efficacy measuring device, including first folding plate 1 and second folding plate 2, first folding plate 1 is movably provided with first sliding device 3, and first thin rod 4 is installed in two ends first sliding device 3 and penetrates, second sliding device 5 is movably provided on first thin rod 4, and second thin rod 6 is installed on second sliding device 5 and penetrates, and the bottom end of second thin rod 6 is fixedly connected with Gauss meter probe 7;

[0032] The bottom of first folding plate 1 is fixedly provided with vertical plate 10, the bottom end of vertical plate 10 is provided with clamping mechanism 9 connected with the clamping roller, positioning frame 11 is arranged at one side of clamping mechanism 9, and clamping mechanism 9 is connected with the clamping roller.

[0033] In this embodiment, preferably, the first folding plate 1 is movably connected through the damper 8, the second folding plate 2 is connected through the damper 8, and the end first folding plate 1 and the end second folding plate 2 are connected through the damper 8.

[0034] It should be noted that the connection between the first folding plate 1 and the second folding plate 2 is movably connected through the damper 8, which can maintain the stability of the first folding plate 1 and the second folding plate 2 after unfolding.

[0035] In this embodiment, preferably, the first sliding device 3 includes a U-shaped shell 301 clamped on the first folding plate 1, and a plurality of support balls 302 are movably mounted in the inside of the U-shaped shell 301 at the upper end, and a plurality of contact balls 303 are movably mounted on both sides of the bottom of the U-shaped shell 301.

[0036] It should be noted that the inside of the U-shaped shell 301 is provided with support balls 302 and contact balls 303, so that the U-shaped shell 301 can be stably connected to the first folding plate 1, which can provide the sliding property of the first sliding device 3 and maintain the support property of the first sliding device 3.

[0037] In this embodiment, preferably, the clamping mechanism 9 includes a mounting shell 901, and a first spring 903 is mounted at the bottom end of the inside of the mounting shell 901 through a limiting ring 909.

[0038] It should be noted that the first spring 903 is installed and connected through the limiting ring 909, and the first spring 903 is configured to adjust the position of the first clamping plate 904.

[0039] In this embodiment, preferably, the upper end of the first spring 903 is fixedly connected with the first clamping plate 904, and the second clamping plate 906 is movably connected with the first clamping plate 904 through an M-shaped elastic sheet 905.

[0040] It should be noted that the first clamping plate 904 is adjusted in position through the first spring 903, which is convenient for clamping the stirring roller with the second clamping plate 906, that is, the first clamping plate 904 and the second clamping plate 906 are connected through the M-shaped elastic sheet 905, which is convenient for adjusting the position of the second clamping plate 906 and maintaining the connection of the first clamping plate 904 and the second clamping plate 906 and the stability of the clamping of the stirring rod.

[0041] In this embodiment, preferably, the upper part of the first clamping plate 904 is fixedly provided with a clamping strip 911, the bottom end of the M-shaped elastic sheet 905 is fixedly connected in the inside of the clamping strip 911, the upper end of the second clamping plate 906 is fixedly connected with a connecting rod 907, the top end of the connecting rod 907 is fixedly connected with a pressing plate 908, and the connecting rod 907 penetrates the upper end of the mounting shell 901.

[0042] It should be noted that the clamping and fixing of the M-shaped elastic sheet 905 is realized by the clamping strip 911, which facilitates the fixed installation of the M-shaped elastic sheet 905, and the extrusion of the second clamping plate 906 is realized by the pressing plate 908 and the connecting rod 907, which facilitates the positioning of the second clamping plate 906.

[0043] In this embodiment, preferably, the upper end of the M-shaped elastic sheet 905 is hingedly connected in the moving cavity 912 of the second clamping plate 906, the first baffle 913 is fixedly arranged in the interior of the second clamping plate 906, the second baffle 915 is fixedly arranged at the upper end of the M-shaped elastic sheet 905, and the second spring 914 is fixedly connected between the first baffle 913 and the second baffle 915.

[0044] It should be noted that the movable installation and connection of the M-shaped elastic sheet 905 is realized by the moving cavity 912, which facilitates the position adjustment of the M-shaped elastic sheet 905 following the second clamping plate 906, and the second spring 914 is arranged between the M-shaped elastic sheet 905 and the second clamping plate 906, which facilitates the pushing out of the M-shaped elastic sheet 905 to realize the hinged connection in the interior of the clamping port 902, thereby realizing the positioning of the second clamping plate 906.

[0045] In this embodiment, preferably, the clamping port 902 is arranged in the interior of the mounting shell 901, the upper end of the M-shaped elastic sheet 905 is hingedly connected in the interior of the clamping port 902, and the anti-slip rubber strips 910 are fixedly arranged on the opposite end faces of the first clamping plate 904 and the second clamping plate 906.

[0046] It should be noted that the fixing of the M-shaped elastic sheet 905 is realized by the clamping port 902, which facilitates the positioning of the second clamping plate 906, and the anti-slip rubber strips 910 are arranged on the end faces of the first clamping plate 904 and the second clamping plate 906, which facilitates the safety of preventing the damage of the stirring rod after the clamping of the first clamping plate 904 and the second clamping plate 906 on the stirring rod.

[0047] The specific operation steps of the present application are as follows:

[0048] In use, the clamping mechanism 9 is first installed on the stirring rod, and in the installation, the pressing plate 908 is first pressed, so that the pressing plate 908 can adjust the position of the second clamping plate 906 through the connecting rod 907, so that the end face of the M-shaped elastic sheet 905 is located at the lower part of the clamping port 902, at this time, the M-shaped elastic sheet 905 is pushed outward by the second spring 914, so that the end face of the M-shaped elastic sheet 905 is hingedly connected in the interior of the clamping port 902, which facilitates the stability of the second clamping plate 906, and the first spring 903 is arranged at the lower part of the first clamping plate 904, which can push the first clamping plate 904, so that the first clamping plate 904 and the second clamping plate 906 can clamp the stirring rod, thereby maintaining the stability of the clamping.

[0049] Then the first folding plate 1 and the second folding plate 2 are opened, and at the time of opening, the first folding plate 1 and the second folding plate 2 are connected through the damper 8, which can make the first folding plate 1 and the second folding plate 2 fold and store, and also can make the first folding plate 1 and the second folding plate 2 stable in unfolding, then the vertical plate 10 is clamped on the positioning frame 11, so that the first folding plate 1 and the second folding plate 2 can be attached above the stirring roller and keep balance and level, then the second thin rod 6 and the first thin rod 4 are manually moved, that is, the first sliding device 3 and the second sliding device 5 are moved and adjusted, which facilitates the second thin rod 6 and the Gauss meter probe 7 to detect the stirring roller at multiple points.

[0050] The roller electromagnetic stirrer is measured by using the foregoing experimental device, and the specific detection method mainly includes:

[0051] 1. Measuring magnetic induction intensity at different points with fixed stirring parameters

[0052] Under the current working condition (300A, 7Hz), the magnetic induction intensity of each point is measured by using the Tesla instrument to obtain the magnetic induction intensity distribution under the normal working condition of the electromagnetic roller. The distribution of the measurement points is shown in Figure 8 The two pairs of electromagnetic rollers are measured separately, one pair is turned off, and the other pair is measured. Taking the electromagnetic roller S1 as an example, it can be found that the electromagnetic roller spacing in the thickness direction is 230mm, so three points are measured in the thickness direction, and the spacing between each point is 100mm; the electromagnetic roller length is 1280mm, so 13 points are measured in the width direction, and the spacing between each point is 100mm; according to the previous research and numerical simulation results, it is found that the magnetic induction intensity gradually tends to 0 when the distance from the electromagnetic roller in the direction of the casting blank is more than 0.6m (that is, the effective range of the electromagnetic roller in the direction of the casting blank generally does not exceed 0.6m), so 13 points are measured in the direction of the casting blank, and the spacing between each point is 100mm. Through the above measurement, the magnetic induction intensity distribution of the entire effective action area of the electromagnetic stirrer during working can be obtained.

[0053] 2. Measuring the magnetic induction intensity on the center line of the stirrer in the width direction by changing the stirring parameters (including current intensity and current frequency):

[0054] Based on the current working condition (300A, 7Hz), the current intensity and the current frequency are changed. As shown in Table 1, the magnetic induction intensity on the center line in the same plane as the electromagnetic roller S1 under the following 9 working conditions is measured, as shown in Figure 9 Each point is measured every 100mm in the width direction. Through the above measurement, the relationship between the magnetic induction intensity and the current intensity and the current frequency is obtained, and thus the actual efficiency of the electromagnetic stirrer under various working conditions is obtained.

[0055] Table 1 Working condition number:

[0056] Case Current intensity / A Current frequency / Hz 1 150 4 2 150 7 3 150 10 4 300 4 5 (current situation) 300 7 6 300 10 7 450 4 8 450 7 9 450 10

[0057] Note: the width direction is A, the thickness direction is B, the drawing direction is C, and there are three measurement points in the thickness direction, so the data records are divided into B1 (close to the inner arc side), B2 (the center plane), and B3 (close to the outer arc side) three planes respectively.

[0058] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A roll type secondary cooling electromagnetic stirring effectiveness measuring device characterized by: Including first folding board (1) and second folding board (2), first sliding device (3) is movably arranged on the first folding board (1), first thin rod (4) is installed through in the first sliding device (3) at both ends, second sliding device (5) is movably arranged on the first thin rod (4), second thin rod (6) is installed through in the second sliding device (5), gauss meter probe (7) is fixedly connected to the bottom end of the second thin rod (6); The bottom of the first folding board (1) is fixedly provided with a vertical plate (10), and the bottom end of the vertical plate (10) is provided with a clamping mechanism (9) clamped with the stirring roller.

2. The roll type secondary cooling electromagnetic stirring effectiveness measuring device according to claim 1, characterized in that: The first folding board (1) is movably connected through the damper (8), the second folding board (2) is connected through the damper (8), and the end of the first folding board (1) and the end of the second folding board (2) are connected through the damper (8).

3. The roll type secondary cooling electromagnetic stirring effectiveness measuring device according to claim 1, characterized in that: The first sliding device (3) includes a U-shaped shell (301) clamped on the first folding board (1), a plurality of support balls (302) are movably arranged in the upper end of the U-shaped shell (301), and a plurality of contact balls (303) are movably arranged in the bottom of the U-shaped shell (301) on both sides.

4. The roll type secondary cooling electromagnetic stirring effectiveness measuring device according to claim 1, characterized in that: The clamping mechanism (9) includes a mounting shell (901), and a first spring (903) is arranged at the bottom end of the mounting shell (901) through a limiting ring (909).

5. The roll type secondary cooling electromagnetic stirring effectiveness measuring device according to claim 4, characterized in that: The upper end of the first spring (903) is fixedly connected with a first clamping plate (904), and the first clamping plate (904) is movably connected with a second clamping plate (906) through an M-shaped elastic sheet (905).

6. The roll type secondary cooling electromagnetic stirring effectiveness measuring device according to claim 5, characterized in that: The upper part of the first clamping plate (904) is fixedly provided with a clamping strip (911), the bottom end of the M-shaped elastic sheet (905) is fixedly connected in the clamping strip (911), the upper end of the second clamping plate (906) is fixedly connected with a connecting rod (907), the top end of the connecting rod (907) is fixedly connected with a pressing plate (908), and the connecting rod (907) penetrates the upper end of the mounting shell (901).

7. The roll type secondary cooling electromagnetic stirring effectiveness measuring device according to claim 6, characterized in that: The upper end of the M-shaped elastic sheet (905) is movably connected in the moving cavity (912) of the second clamping plate (906), a first baffle (913) is fixedly arranged in the second clamping plate (906), a second baffle (915) is fixedly arranged at the upper end of the M-shaped elastic sheet (905), and a second spring (914) is fixedly connected between the first baffle (913) and the second baffle (915).

8. The roll type secondary cooling electromagnetic stirring effectiveness measuring device according to claim 7, characterized in that: A clamping port (902) is formed in the mounting shell (901), the upper end of the M-shaped elastic sheet (905) is clamped in the clamping port (902), and anti-skid rubber strips (910) are fixedly arranged on the opposite end faces of the first clamping plate (904) and the second clamping plate (906).

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