Measuring device for detecting immersion depth of tundish nozzle

Abstract

The utility model discloses a measuring device for detecting the immersion depth of a tundish nozzle. The measuring device comprises a displacement part, a lifting part, a telescopic part, a positioning part and a detection part, the lifting part is arranged on the displacement part; the telescopic part is arranged on the lifting part; the positioning part and the detection part are arranged on the lifting part; the displacement part comprises a base, a display screen and a prompting lamp; universal wheels are arranged at four corners of the lower end surface of the base; the display screen and the prompting lamp are arranged on the base; the signal input end of the display screen and the signal input end of the prompting lamp are connected with the signal output end of the CPU. According to the utility model, the detection precision of the insertion depth of the submersed nozzle is improved, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] The utility model relates to a measuring device, in particular to a measuring device which can accurately detect the length of a part of a tundish immersion nozzle immersed in molten steel, and belongs to the technical field of tundish nozzle measuring equipment. Background Art

[0002] The insertion depth of the submerged nozzle of the crystallizer in the continuous casting process is an important technical indicator to ensure the stability of the crystallizer flow field. If it is not properly controlled, it may lead to quality problems such as disordered crystallizer flow field and slag curling of the ingot. In the actual production process, the height change of the crystallizer liquid level will affect the insertion depth of the submerged nozzle. At present, the insertion depth of the submerged nozzle is measured manually. The staff holds a metal rod and inserts it into the molten steel of the crystallizer so that the bottom end of the metal rod is flush with the bottom end of the nozzle, and then removes the metal rod. The part of the outer surface of the metal rod with molten steel is measured, which is the length of the part of the submerged nozzle immersed in the molten steel. Due to the influence of factors such as high temperature on site and narrow environment, the measurement has errors and is dangerous. This method not only has large errors, but also has the problem of contaminating the molten steel. Therefore, a measuring device is needed, which is required to be able to efficiently and accurately measure the part of the submerged nozzle immersed in the molten steel. Utility Model Content

[0003] The utility model aims to overcome the deficiencies of the prior art and provide a measuring device for detecting the immersion depth of a tundish nozzle, which can not only reduce the labor intensity of the staff, but also improve the accuracy of the measurement data of the submerged nozzle inserted into the molten steel.

[0004] The problem described in the utility model is solved by the following technical solutions:

[0005] A measuring device for detecting the immersion depth of a tundish water inlet, comprising a displacement part, a lifting part, a telescopic part, a positioning part and a detection part; the lifting part is arranged on the displacement part; the telescopic part is arranged on the lifting part; the positioning part and the detection part are both arranged on the lifting part; the displacement part comprises a base, a display screen and a prompt light; universal wheels are arranged at the four corners of the lower end surface of the base; the display screen and the prompt light are both arranged on the base; the signal input ends of the display screen and the prompt light are connected to the signal output end of the CPU.

[0006] The above-mentioned measuring device for detecting the immersion depth of the water inlet of the middle ladle, the lifting part includes a vertical plate, a slider, a first motor, a first screw and a first screw nut; the vertical plate is arranged on the side wall of the base; the first motor housing is arranged at the top of the vertical plate, and the bottom end of the vertical plate is provided with a first support plate, one end of the first screw is connected to the output shaft of the first motor, and the other end is axially connected to the first support plate; the first screw nut is arranged on the screw; the side wall of the vertical plate is provided with a slide rail in the vertical direction, and the slider is slidably arranged on the slide rail of the vertical plate; the slider is provided with a hole in the vertical direction, and the screw nut is arranged in the hole of the slider, and the screw passes through the hole of the slider.

[0007] The above-mentioned measuring device for detecting the immersion depth of the water inlet of the tundish, the telescopic part includes a horizontal long plate, a second motor, a second lead screw, a second lead screw nut and a rectangular long strip block; the horizontal long plate is vertically arranged on the end face of the slider away from the vertical plate; the second motor is arranged at one end of the upper end face of the horizontal long plate, and the other end is provided with a second support plate, one end of the second lead screw is connected with the output shaft of the second motor, and the other end of the second lead screw is axially connected with the second support plate; the second lead screw nut is arranged on the second lead screw; the upper end face of the rectangular long strip block is provided with a slide rail along its length direction, the lower end face of the horizontal long plate is provided with a slide groove along its length direction, and the rectangular long strip block is slidably arranged on the lower end face of the horizontal long plate; the length direction line of the horizontal long plate is parallel to the length direction line of the rectangular long strip block; the center of the horizontal long plate is provided with a strip hole along its length direction, and the bottom end of the lead screw nut is provided with a connecting block, and the connecting block passes through the strip hole of the horizontal long plate and is connected with the rectangular long strip block.

[0008] The above-mentioned measuring device for detecting the immersion depth of the water inlet of the tundish, the positioning part includes a pressure plate, a guide rod, a spring, a touch pressure switch and a square block; the square block is arranged at the end of the square long block; the upper end surface of the square block is provided with a guide hole, and the guide rod is passed through the guide hole, and the top end of the guide rod is provided with a pressure plate; the top end surface of the square block is provided with a round hole and a square hole, the spring is arranged in the round hole of the square block, and its top end is in contact with the pressure plate, and the touch pressure switch is arranged in the square hole of the square block; the signal output end of the touch pressure switch is connected to the signal input end of the CPU.

[0009] The above-mentioned measuring device for detecting the immersion depth of the water inlet of the tundish, the detection part includes a third motor, a third lead screw, a third lead screw nut, a heat insulation cover and an infrared rangefinder; the interior of the rectangular long strip block is a cavity structure, and the side wall of the rectangular long strip block is provided with strip holes along its length direction, and the strip holes are connected with the internal cavity of the rectangular long strip block; the third motor is arranged at one end of the cavity in the rectangular long strip block, and the other end of the cavity in the square long strip block is provided with a third support plate, and one end of the third lead screw is connected to the output shaft of the third motor, and the other end of the third lead screw is axially connected to the third support plate; the third lead screw nut is arranged in the cavity in the square long strip block, and the third lead screw is penetrated by the third lead screw nut; a support block is arranged on the third lead screw nut, the support block passes through the strip hole of the square long strip block, and the end of the support block is connected to the heat insulation cover; the bottom end of the heat insulation cover is provided with an opening, and the infrared rangefinder is arranged at the top of the inner wall of the heat insulation cover; the signal output end of the infrared rangefinder is connected to the signal input end of the CPU.

[0010] The utility model drives the other parts to move to the front of the tundish through the displacement part; through the cooperation of the lifting part and the telescopic part, the positioning part can contact the bottom of the tundish for positioning; finally, the insertion depth of the immersion nozzle is measured through the detection part. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0012] The list of numbers in the figure is: 1. base, 2. vertical plate, 3. slider, 4. first motor, 5. horizontal long plate, 6. second motor, 7. second lead screw nut, 8. square long block, 9. pressure plate, 10. square block, 11. heat insulation cover. DETAILED DESCRIPTION

[0013] See also Figure 1 The utility model includes a displacement part, a lifting part, a telescopic part, a positioning part and a detection part; the lifting part is arranged on the displacement part; the displacement part is used to drive the remaining parts to move to the front of the middle package; the telescopic part is arranged on the lifting part; the telescopic part can drive the positioning part to approach and contact the bottom end of the middle package shell; the positioning part and the detection part are both arranged on the lifting part; the displacement part includes a base 1, a display screen and a prompt light; universal wheels are arranged at the four corners of the lower end surface of the base 1; the display screen and the prompt light are both arranged on the base 1; the signal input ends of the display screen and the prompt light are connected to the signal output ends of the CPU.

[0014] The lifting part includes a vertical plate 2, a slider 3, a first motor 4, a first lead screw and a first lead screw nut; the vertical plate 2 is arranged on the side wall of the base 1; the housing of the first motor 4 is arranged at the top of the vertical plate 2, and a first support plate is arranged at the bottom end of the vertical plate 2, one end of the first lead screw is connected to the output shaft of the first motor 4, and the other end is axially connected to the first support plate; the first motor 4 can drive the first lead screw to rotate, and then drive the first lead screw nut to move along the axial center line direction of the first lead screw; the first lead screw nut is arranged on the lead screw; the side wall of the vertical plate 2 is provided with a slide rail in the vertical direction, and the slider 3 is slidably arranged on the slide rail of the vertical plate 2; the slider 3 is provided with a hole in the vertical direction, and the lead screw nut is arranged in the hole of the slider 3, and the lead screw passes through the hole of the slider 3; the first lead screw nut drives the slider 3 to move synchronously.

[0015] The telescopic part includes a horizontal long plate 5, a second motor 6, a second lead screw, a second lead screw nut 7 and a rectangular long strip block 8; the horizontal long plate 5 is vertically arranged on the end surface of the slider 3 away from the vertical plate 2; the second motor 6 is arranged at one end of the upper end surface of the horizontal long plate 5, and a second support plate is arranged at the other end, one end of the second lead screw is connected to the output shaft of the second motor 6, and the other end of the second lead screw is axially connected to the second support plate; the second lead screw nut 7 is arranged on the second lead screw; the second motor 6 can drive the second lead screw nut 7 to move along the second lead screw; the upper end surface of the rectangular long strip block 8 is provided with The slide rail, the lower end surface of the horizontal long plate 5 is provided with a slide groove along its length direction, and the rectangular long strip block 8 is slidably set on the lower end surface of the horizontal long plate 5; the length direction line of the horizontal long plate 5 is parallel to the length direction line of the rectangular long strip block 8; the center of the horizontal long plate 5 is provided with a strip hole along its length direction, and a connecting block is provided at the bottom end of the lead screw nut, and the connecting block passes through the strip hole of the horizontal long plate 5 and is connected with the rectangular long strip block 8; the second lead screw nut can drive the square long strip block 8 to move synchronously along the axial center line direction of the second lead screw; and then the total length of the combination of the square long strip block 8 and the horizontal long plate 5 is adjusted.

[0016] The positioning part includes a pressure plate 9, a guide rod, a spring, a touch-pressure switch and a square block 10; the square block 10 is arranged at the end of the square long strip block 8; the upper end surface of the square block 10 is provided with a guide hole, and the guide rod is passed through the guide hole, and the top end of the guide rod is provided with a pressure plate 9; the guide rod provides a guiding function for the lifting and lowering of the pressure plate 9; the top end surface of the square block 10 is provided with a round hole and a square hole, the spring is arranged in the round hole of the square block 10, and its top end is in contact with the pressure plate 9, and the touch-pressure switch is arranged in the square hole of the square block 10; the spring provides an upward force for the pressure plate 9, and when the pressure plate 9 contacts the bottom plane of the middle package, it will press the pressure plate 9 downward until the pressure plate 9 touches the touch-pressure switch, and the lifting and lowering stop at this point; the signal output end of the touch-pressure switch is connected to the signal input end of the CPU.

[0017] The detection part includes a third motor, a third lead screw, a third lead screw nut, a heat insulation cover 11 and an infrared rangefinder; the interior of the rectangular long block 8 is a cavity mechanism, and the side wall of the rectangular long block 8 is provided with strip holes along its length direction, and the strip holes are connected to the internal cavity of the rectangular long block 8; the third motor is arranged at one end of the cavity in the rectangular long block 8, and the other end of the cavity in the square long block 8 is provided with a third support plate, and one end of the third lead screw is connected to the output shaft of the third motor, and the other end of the third lead screw is axially connected to the third support plate; the third lead screw nut is arranged in the cavity in the square long block 8, and the third lead screw A third lead screw nut is passed through; the third motor can drive the third lead screw to rotate, and then drive the third lead screw nut to move along the third lead screw; a support block is provided on the third lead screw nut, the support block passes through the strip holes of the square long strip block 8, and the end of the support block is connected to the heat insulation cover 11; the third lead screw nut drives the heat insulation cover 11 and the infrared rangefinder therein to move horizontally synchronously; an opening is provided at the bottom end of the heat insulation cover 11, and the infrared rangefinder is arranged at the top end of the inner wall of the heat insulation cover 11; the heat insulation cover 11 isolates part of the heat radiation for the infrared rangefinder; the signal output end of the infrared rangefinder is connected to the signal input end of the CPU.

[0018] The model of the CPU module in the utility model is 87C196KC.

[0019] Actual use process: push the device to the front of the tundish, then start the second motor 6 to drive the rectangular strip block 8 forward until the square block 10 is close to the bottom plane of the tundish shell, and then start the first motor 4 to drive the first screw nut upward, and then drive the square block 10 upward until the pressure plate 9 triggers the touch pressure switch, indicating that at this time the position of the infrared rangefinder is fixed at a distance from the bottom of the tundish, and the position of the bottom of the tundish and the bottom of the submerged nozzle is fixed, and the thickness of the slag layer of the crystallizer is known, that is, as long as the distance between the infrared rangefinder and the slag layer is measured, the depth of the submerged nozzle immersed in the molten steel can be converted; after the pressure plate 9 triggers the touch pressure switch, the prompt light comes on, and the switch is turned off at this time. Close the first motor to stop the upward movement, and then start the third motor to drive the infrared rangefinder to move on the slag layer, and measure the distance while moving. The measured data is displayed on the display screen. Since the surface of the slag layer will have slight fluctuations, multiple data are collected to calculate the average value. This average value is the distance between the infrared rangefinder and the slag layer. Then, according to the known distance parameters between the infrared rangefinder and the slag layer, the distance parameters between the infrared rangefinder and the bottom of the ladle, the length parameters of the submerged nozzle, and the thickness parameters of the slag layer; the distance between the bottom of the submerged nozzle and the bottom of the ladle minus the distance between the infrared rangefinder and the bottom of the ladle minus the distance between the infrared rangefinder and the slag layer minus the thickness of the slag layer is the depth of the submerged nozzle immersed in the molten steel.

Claims

1. A measuring device for detecting the immersion depth of a tundish nozzle, characterized in that: The device comprises a displacement part, a lifting part, a telescopic part, a positioning part and a detection part; the lifting part is arranged on the displacement part; the telescopic part is arranged on the lifting part; the positioning part and the detection part are both arranged on the lifting part; the displacement part comprises a base (1), a display screen and a prompt light; universal wheels are arranged at the four corners of the lower end surface of the base (1); the display screen and the prompt light are both arranged on the base (1); and the signal input ends of the display screen and the prompt light are both connected to the signal output end of the CPU.

2. The measuring device for detecting the immersion depth of the tundish nozzle according to claim 1, characterized in that: The lifting part comprises a vertical plate (2), a slider (3), a first motor (4), a first lead screw and a first lead screw nut; the vertical plate (2) is arranged on the side wall of the base (1); the housing of the first motor (4) is arranged at the top end of the vertical plate (2); a first support plate is arranged at the bottom end of the vertical plate (2); one end of the first lead screw is connected to the output shaft of the first motor (4), and the other end is axially connected to the first support plate; the first lead screw nut is arranged on the lead screw; a slide rail is arranged on the side wall of the vertical plate (2) in the vertical direction, and the slider (3) is slidably arranged on the slide rail of the vertical plate (2); the slider (3) is provided with a hole in the vertical direction, and the lead screw nut is arranged in the hole of the slider (3), and the lead screw passes through the hole of the slider (3).

3. The measuring device for detecting the immersion depth of the tundish nozzle according to claim 2, characterized in that: The telescopic part comprises a horizontal long plate (5), a second motor (6), a second lead screw, a second lead screw nut (7) and a rectangular long strip (8); the horizontal long plate (5) is vertically arranged on the end surface of the slider (3) away from the vertical plate (2); the second motor (6) is arranged at one end of the upper end surface of the horizontal long plate (5), and a second support plate is arranged at the other end; one end of the second lead screw is connected to the output shaft of the second motor (6), and the other end of the second lead screw is axially connected to the second support plate; the second lead screw nut (7) is arranged on the second lead screw; the square The upper end surface of the rectangular strip block (8) is provided with a slide rail along its length direction, the lower end surface of the horizontal long board (5) is provided with a slide groove along its length direction, and the rectangular strip block (8) is slidably arranged on the lower end surface of the horizontal long board (5); the length direction line of the horizontal long board (5) is parallel to the length direction line of the rectangular strip block (8); the center of the horizontal long board (5) is provided with a strip hole along its length direction, and a connecting block is provided at the bottom end of the lead screw nut, and the connecting block passes through the strip hole of the horizontal long board (5) and is connected to the rectangular strip block (8).

4. The measuring device for detecting the immersion depth of the tundish nozzle according to claim 3 is characterized in that: The positioning part comprises a pressure plate (9), a guide rod, a spring, a touch-pressure switch and a square block (10); the square block (10) is arranged at the end of the rectangular long strip block (8); the upper end surface of the square block (10) is provided with a guide hole, and the guide rod is inserted into the guide hole, and the top end of the guide rod is provided with a pressure plate (9); the top end surface of the square block (10) is provided with a round hole and a square hole, the spring is arranged in the round hole of the square block (10), and the top end of the spring contacts the pressure plate (9), and the touch-pressure switch is arranged in the square hole of the square block (10); the signal output end of the touch-pressure switch is connected to the signal input end of the CPU.

5. The measuring device for detecting the immersion depth of the tundish nozzle according to claim 4, characterized in that: The detection part comprises a third motor, a third lead screw, a third lead screw nut, a heat shield (11) and an infrared rangefinder; the interior of the rectangular long strip (8) is a cavity structure, and a strip hole is provided on the side wall of the rectangular long strip (8) along its length direction, and the strip hole is connected to the internal cavity of the rectangular long strip (8); the third motor is arranged at one end of the internal cavity of the rectangular long strip (8), and a third support plate is arranged at the other end of the internal cavity of the square long strip (8), and one end of the third lead screw is connected to the output shaft of the third motor, The other end of the third lead screw is axially connected to the third support plate; the third lead screw nut is arranged in the inner cavity of the rectangular long strip block (8), and the third lead screw passes through the third lead screw nut; a support block is arranged on the third lead screw nut, the support block passes through the strip hole of the rectangular long strip block (8), and the end of the support block is connected to the heat insulation cover (11); the bottom end of the heat insulation cover (11) is provided with an opening, and the infrared rangefinder is arranged at the top end of the inner wall of the heat insulation cover (11); the signal output end of the infrared rangefinder is connected to the signal input end of the CPU.

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