Automatic pouring device for tundish of slab continuous casting machine and using method

Abstract

The embodiment of the invention provides an automatic pouring device for a tundish of a slab continuous casting machine and a using method, and relates to the field of steelmaking. The automatic pouring device for the tundish of the slab continuous casting machine comprises a tundish body, a stopper rod, a driving module, a crystallization module, a sensing module and a control module, a submersed nozzle is formed in the bottom of the tundish body, the stopper rod is arranged in the tundish body and arranged in the submersed nozzle in a lifting mode, and therefore the submersed nozzle is opened or blocked, and the driving module is connected with the driving module. The driving module is connected with the stopper rod and drives the stopper rod to ascend and descend, the crystallization module is arranged at an outlet of the submersed nozzle, steel flow in the tundish is used for flowing into the crystallization module through the submersed nozzle, the sensing module is arranged on the crystallization module, and the sensing module continuously measures the height of the liquid level of molten steel in the crystallization module. The control module is communicated with the sensing module and the driving module at the same time, automatic casting is achieved, and the casting success rate of the tundish is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of steelmaking, and in particular to an automatic pouring device for a tundish of a slab continuous casting machine and a use method thereof. Background Art

[0002] Before the continuous casting machine of the steel plant is put into production, the ingot head is first sent into the crystallizer and sealed. Before pouring, the tundish car is driven above the crystallizer, and the water inlet of the tundish is centered in the crystallizer. After the production casting conditions are met, the large ladle is directed to start pouring. When the weight of the molten steel in the tundish reaches 16t, the operator manually presses the tundish plug to start pouring. The emergence time is controlled at 65±15 seconds. The emergence time is mainly based on the remote time reporting of the main control worker through the seat intercom. After the crystallizer liquid level is stable, the crystallizer liquid level is switched to automatic control, the probe liquid level is switched to automatic control, and the insertion depth of the immersion water inlet is adjusted. The pulling speed is manually increased to the target pulling speed.

[0003] At present, the tundish pouring operation of the slab continuous casting machine is still mainly carried out by traditional manual pouring, which is based on experience and is easily affected by personal experience. There are frequent accidents such as insufficient emergence time or too fast starting speed, which leads to steel leakage during pouring and the ingot head being pulled off during pouring. This has had a great impact on the continuous casting production and has become a difficult problem restricting production stability. Summary of the invention

[0004] The invention provides an automatic pouring device for a tundish of a slab continuous casting machine and a use method thereof, which can realize automatic pouring, improve the degree of automation, and improve the success rate of pouring the tundish.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] An embodiment of the present invention provides an automatic pouring device for a tundish of a slab continuous casting machine, comprising:

[0007] An intermediate package, wherein the bottom of the intermediate package is provided with an immersed water inlet;

[0008] A stopper rod, the stopper rod is arranged in the tundish, and the stopper rod can be raised and lowered in the submerged nozzle, so as to open or block the submerged nozzle;

[0009] A driving module, the driving module is connected to the stopper rod, and the driving module drives the stopper rod to perform lifting motion;

[0010] A crystallization module, wherein the crystallization module is arranged at the outlet position of the submerged nozzle, and the steel flow in the tundish is used to flow into the crystallization module through the submerged nozzle;

[0011] A sensor module, the sensor module is arranged on the crystallization module, and the sensor module continuously measures the height of the molten steel level in the crystallization module;

[0012] A control module is connected to the sensor module and the drive module at the same time, and is used to control the drive module after receiving the liquid level height signal from the sensor module.

[0013] Optionally, the driving module includes a driver and a transmission member, the driver is communicated with the control module, the driver is connected with the transmission member, the transmission member is connected with the stopper rod, and the transmission member drives the stopper rod to perform lifting motion when driven by the driver.

[0014] Optionally, the transmission member includes a vertical rod and a cross rod, the bottom end of the vertical rod is connected to the driver, the top end of the vertical rod is connected to one end of the cross rod, and the other end of the cross rod is connected to the stopper rod.

[0015] Optionally, the automatic pouring device for the tundish of the slab continuous casting machine further includes a manual pressure handle, which is connected to the vertical rod, and the manual pressure handle is used to manually drive the vertical rod to perform lifting movements.

[0016] Optionally, the sensing module is a Ramon electromagnetic liquid level gauge.

[0017] An embodiment of the present invention further provides a method for using the automatic pouring device for the tundish of a slab continuous casting machine, and the method for using the automatic pouring device for the tundish of a slab continuous casting machine comprises:

[0018] Installing a driving module outside the intermediate package;

[0019] Detecting whether the driving module is working normally;

[0020] The big bag starts pouring;

[0021] When the molten steel tonnage in the tundish reaches 16t, pouring starts automatically;

[0022] The driving module drives the stopper rod to start moving according to a preset action.

[0023] Optionally, the step of the driving module driving the stopper rod to start moving according to a preset action includes:

[0024] The stopper rod moves upward, thereby opening the submerged water inlet by 15 mm and lasting for a first preset time;

[0025] After the first preset time, the stopper rod continues to move to open the submerged nozzle by 7 mm for a second preset time;

[0026] After the second preset time has passed, the stopper rod continues to move to open the submerged water outlet by 10 mm and maintains this position.

[0027] Optionally, the step of the driving module driving the stopper rod to start moving according to a preset action further includes:

[0028] The first preset time is 8 seconds, and the second preset time is 2 seconds.

[0029] Optionally, the method for using the slab continuous casting machine tundish self-casting device further includes:

[0030] Before automatic pouring, manual intervention is performed according to the actual steel flow conditions.

[0031] Optionally, the step of manually intervening according to actual steel flow conditions before automatic pouring includes:

[0032] When the steel flow is too large, the height of the stopper rod is manually lowered, and when the steel flow is too small, the height of the stopper rod is manually raised, wherein the height of the stopper rod moving each time is 1 mm.

[0033] The beneficial effects of the automatic pouring device for tundish of a slab continuous casting machine and the use method of the embodiment of the present invention include, for example:

[0034] The automatic pouring device of the tundish of the slab continuous casting machine comprises a tundish body, a stopper rod, a driving module, a crystallization module, a sensor module and a control module. An immersion nozzle is provided at the bottom of the tundish body. The stopper rod is arranged in the tundish body, and the stopper rod can be lifted and lowered in the immersion nozzle to open or block the immersion nozzle. The driving module is connected to the stopper rod, and the driving module drives the stopper rod to perform lifting and lowering movements. The crystallization module is arranged at the outlet position of the immersion nozzle. The steel flow in the tundish body is used to flow into the crystallization module through the immersion nozzle. The sensor module is arranged on the crystallization module, and the sensor module continuously measures the liquid level of the molten steel in the crystallization module. The control module is connected to the sensor module and the driving module at the same time. The control module is used to control the driving module after receiving the liquid level signal of the sensor module. When in use, the stopper rod is driven to move up and down in the submerged nozzle by the driving module. The crystallization module is provided with a sensor module, which can continuously measure the height of the molten steel level in the crystallization module and transmit the height data to the control module. The control module controls the start and stop of the driving module according to the height data of the sensor module, thereby realizing the control of the lifting and lowering movement of the stopper rod and achieving the effect of accurately adjusting the steel flow. The automatic pouring device for the tundish of the slab continuous casting machine can automatically start pouring, which improves the success rate of the tundish pouring.

[0035] The method for using the tundish automatic pouring device for a slab continuous casting machine uses the tundish automatic pouring device for a slab continuous casting machine, and the method includes: installing a driving module on the outside of the tundish body; detecting whether the driving module works normally; pouring the large ladle; automatically starting the pouring after the molten steel tonnage in the middle ladle reaches 16 tons; the driving module drives the stopper rod to start moving according to a preset action. The method for using the tundish automatic pouring device for a slab continuous casting machine can automatically start pouring, thereby improving the success rate of pouring the tundish. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0037] Figure 1 A schematic diagram of the structure of the automatic pouring device for the tundish of the slab continuous casting machine provided in this embodiment;

[0038] Figure 2 The present invention is a flow chart of the method for using the automatic pouring device of the tundish of the slab continuous casting machine.

[0039] Icons: 10-intermediate body; 20-stopper rod; 30-driving module; 31-driver; 32-transmission member; 321-vertical rod; 322-horizontal rod; 40-crystallization module; 41-cover plate; 42-crystallizer copper plate; 50-sensing module; 101-immersed water inlet; 60-manual pressure handle. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0041] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0043] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0044] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0045] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0046] Before the continuous casting machine of the steel plant is put into production, the ingot head is first sent into the crystallizer and sealed. Before pouring, the tundish car is driven above the crystallizer, and the water inlet of the tundish is centered in the crystallizer. After the production casting conditions are met, the large ladle is directed to start pouring. When the weight of the molten steel in the tundish reaches 16t, the operator manually presses the tundish plug to start pouring. The emergence time is controlled at 65±15 seconds. The emergence time is mainly based on the remote time reporting of the main control worker through the seat intercom. After the crystallizer liquid level is stable, the crystallizer liquid level is switched to automatic control, the probe liquid level is switched to automatic control, and the insertion depth of the immersion water inlet is adjusted. The pulling speed is manually increased to the target pulling speed.

[0047] At present, the tundish pouring operation of the slab continuous casting machine is still mainly carried out by traditional manual pouring, which is based on experience and is easily affected by personal experience. There are frequent accidents such as insufficient emergence time or too fast starting speed, which leads to steel leakage during pouring and the ingot head being pulled off during pouring. This has had a great impact on the continuous casting production and has become a difficult problem restricting production stability.

[0048] Please refer to Figure 1-Figure 2 The present embodiment provides an automatic pouring device for the tundish of a slab continuous casting machine, which can effectively improve the technical problems mentioned above, can realize automatic pouring, improve the degree of automation, improve the success rate of tundish pouring, is simple to operate, and automatically increases the casting speed.

[0049] The present embodiment provides an automatic pouring device for a tundish of a slab continuous casting machine, including a tundish 10, a stopper rod 20, a driving module 30, a crystallization module 40, a sensor module 50 and a control module. An immersion nozzle 101 is provided at the bottom of the tundish 10. The stopper rod 20 is arranged in the tundish 10, and the stopper rod 20 can be lifted and lowered in the immersion nozzle 101, so as to open or block the immersion nozzle 101. The driving module 30 is connected to the stopper rod 20, and the driving module 30 drives the stopper rod 20 to move up and down. The crystallization module 40 is arranged at the outlet position of the immersion nozzle 101. The steel flow in the tundish 10 is used to flow into the crystallization module 40 through the immersion nozzle 101. The sensor module 50 is arranged on the crystallization module 40, and the sensor module 50 continuously measures the liquid level of the molten steel in the crystallization module 40. The control module is connected to the sensor module 50 and the driving module 30 at the same time. The control module is used to control the driving module 30 after receiving the liquid level signal of the sensor module 50.

[0050] In this embodiment, the driving module 30 includes a driver 31 and a transmission member 32. The driver 31 is connected to the control module, the driver 31 is connected to the transmission member 32, and the transmission member 32 is connected to the stopper rod 20. The transmission member 32 drives the stopper rod 20 to move up and down under the drive of the driver 31. The driver 31 is composed of a liquid level digital control electric cylinder and a motor driver 31.

[0051] Specifically, the tundish includes a tundish body 10 and a tundish mechanism. The tundish mechanism is installed on the front side of the steel pouring position of the tundish, and the driver 31 is sleeved in the inner cavity of the tundish mechanism.

[0052] It should be noted that the transmission member 32 includes a vertical rod 321 and a horizontal rod 322, the bottom end of the vertical rod 321 is connected to the driver 31, the top end of the vertical rod 321 is connected to one end of the horizontal rod 322, and the other end of the horizontal rod 322 is connected to the stopper rod 20. The vertical rod 321 is connected to the driving end of the driver 31, and the driver 31 drives the vertical rod 321 to move up and down, thereby driving the horizontal rod 322 to move up and down, so as to realize the lifting and moving of the stopper rod 20.

[0053] In other embodiments, the cross bar 322 may be directly installed on the driving end of the driver 31, and the driver 31 directly drives the cross bar 322 to move up and down, thereby driving the stopper rod 20 to move up and down together.

[0054] It should also be explained that the automatic pouring device for the tundish of the slab continuous casting machine also includes a manual pressure handle 60, which is connected to the vertical rod 321, and is used to manually drive the vertical rod 321 to move up and down. The manual pressure handle 60 is installed in the tundish mechanism, and when the manual pressure handle 60 is pressed down, the transmission member 32 moves upward, thereby driving the stopper rod 20 to move upward, so as to control the steel flow in the tundish to flow into the submerged nozzle 101, and the steel flow flows into the crystallization module 40 through the submerged nozzle 101, so as to realize continuous steel pouring.

[0055] In this embodiment, the crystallization module 40 is a crystallizer, and the sensor module 50 is a Ramon electromagnetic liquid level gauge. The Ramon electromagnetic liquid level gauge is embedded in the outer arc of the crystallizer, located above the crystallizer copper plate 42, and installed on the cover plate 41, so that the Ramon electromagnetic liquid level gauge does not affect the water change port, slag addition and other operations, ensuring the working efficiency and stability of the sensor module 50.

[0056] Specifically, the Ramon electromagnetic liquid level meter uses the principle of electromagnetic induction to continuously measure the liquid level of molten steel in the crystallizer. The meter outputs a voltage or current analog value that changes linearly with the liquid level and sends it to the control module, thereby achieving constant liquid level height casting.

[0057] It can be understood that the main functions of the Ramon electromagnetic liquid level gauge are: remote liquid level detection function, precise liquid level detection, electromagnetic stirring / braking suppression, bulging compensation with stopper rod 20, crystallizer vibration interference suppression, standing wave suppression function and automatic pouring with stopper rod 20, which is conducive to improving the operating rate of the continuous casting machine, ensuring the quality of the steel billet, and reducing the workload of casting workers and maintenance personnel.

[0058] The working principle of the Ramon electromagnetic liquid level meter system is as follows: a low-frequency alternating current is passed into the excitation coil of the sensor to generate an alternating magnetic field. The alternating electromagnetic field generates an alternating eddy current in the molten steel surface of the crystallizer. This eddy current then generates an alternating magnetic field. The sensor detection coil converts the alternating magnetic field into a voltage. The amplitude of the voltage signal is proportional to the distance between the molten steel and the sensor. The voltage is amplified by the electromagnetic preamplifier box and then processed in the calculation unit controlled by the microprocessor to linearize the signal. Among them, the control module is composed of an industrial computer, a motor driver and a user PLC. It can have the functions of crystallizer vibration compensation and standing wave suppression, and can automatically compensate for the periodic liquid level fluctuation caused by the crystallizer vibration, and eliminate the overshoot and loss of control of the stopper rod 20 caused by the standing wave.

[0059] An embodiment of the present invention further provides a method for using the automatic pouring device for the tundish of a slab continuous casting machine, and the method for using the automatic pouring device for the tundish of a slab continuous casting machine includes:

[0060] S1: Select electromagnetic sensor.

[0061] Specifically, when the "electromagnetic stopper on / off" button indicator light is on, it means that the electromagnetic sensor is in use.

[0062] S2: After the mid-pack truck arrives, the liquid level system is cleared.

[0063] Specifically, press and hold the "remote zero adjustment" button for more than 2 seconds. When the liquid level on the liquid level light bar indicator rises to the full position, it indicates that the zero adjustment is successful.

[0064] S3 : Install the driving module 30 outside the intermediate package 10 .

[0065] Specifically, the liquid level digital control electric cylinder is installed in the inner cavity of the middle package mechanism, and the electric cylinder cable is plugged in.

[0066] S4: Check whether the driving module 30 works normally.

[0067] Specifically, the "driver 31 off / on" selection switch is rotated to turn on; if the indicator light is on, it means that the driver 31 is on, and if the indicator light is off, it means that the driver 31 is off.

[0068] S5: The "Automatic pouring" indicator light flashes, indicating that the automatic pouring permission conditions are met. At this time, press the "Automatic" button, and the stopper rod 20 automatically drops 3mm to prevent the molten steel in the tundish from pouring automatically.

[0069] S6: Start pouring large bags.

[0070] S7: When the molten steel tonnage in the tundish reaches 16t, pouring starts automatically.

[0071] Specifically, after pressing the "automatic pouring" button or the tonnage of the middle ladle reaches 16 tons, the set liquid level drops to the initial set liquid level. When the actual liquid level reaches 140mm below the copper plate mouth, the initial set liquid level starts to rise, and within 35s, it rises from 140mm below the copper plate mouth to 100mm below the copper plate mouth. This can reduce the liquid level deviation and prevent the stopper rod 20 from overshooting and causing large fluctuations.

[0072] S8: The driving module 30 drives the stopper rod 20 to start moving according to a preset action.

[0073] Specifically, the stopper rod 20 moves upward, thereby opening the immersion water outlet 101 by 15 mm, and continues for a first preset time; after the first preset time, the stopper rod 20 continues to move, opening the immersion water outlet 101 by 7 mm, and continues for a second preset time; after the second preset time, the stopper rod 20 continues to move, opening the immersion water outlet 101 by 10 mm, and continues to open.

[0074] Among them, the first preset time is 8s, and the second preset time is 2s.

[0075] In this embodiment, the opening degree of the stopper rod 20 can be adjusted by the manual operation box. The opening degree of the stopper rod 20 is 15 mm and lasts for 8 seconds, which can fully preheat the immersion nozzle 101 to fill the liquid level tank and allow the molten steel to form a relatively thick solidified shell to withstand the instantaneous pulling force when the straightening machine is just started.

[0076] S9: Automatically speed up to the target pulling speed.

[0077] Specifically, after pressing the "automatic casting" button, the control module sets the starting pulling speed to 0.4m / min by default. The pulling speed automatically rises to the starting pulling speed setting value of 0.4m / min and remains stable for 15S. The control module determines that the head billet has exited the crystallizer based on the length of the billet tracking. The control module gradually increases the pulling speed to 0.8m / min and remains stable for 72S. The control module then gradually increases the pulling speed to 1.2m / min. After remaining stable for 90S, the control module gradually increases the pulling speed to the target pulling speed of 1.6m / min. The pulling speed is increased in steps of 0.3m / min with an interval of 10 to 15s, so that the protective slag is fully melted and there is enough liquid slag.

[0078] In this embodiment, the method for using the tundish self-casting device of the slab continuous casting machine further includes:

[0079] Before automatic pouring, manual intervention is performed according to the actual steel flow conditions.

[0080] It should also be noted that manual operation can be performed according to the actual steel flow before the automatic control state is put into operation. In the case of large steel flow, the height of the stopper rod 20 is manually lowered, and in the case of small steel flow, the height of the stopper rod 20 is manually raised, wherein the height of the stopper rod 20 moved each time is 1 mm.

[0081] Specifically, when the steel flow is too large, press the "jog down" button on the hand operation box, and the stopper rod 20 will be lowered by 1mm each time; when the steel flow is too small, press the "jog up" button on the hand operation box, and the stopper rod 20 will be raised by 1mm each time.

[0082] During the whole process from the first opening of the stopper rod 20 to the automatic operation, if the liquid level rises too fast, the "jog down" button on the manual operation box can be used to slow down the liquid level rise; conversely, if the liquid level rises too slowly, the "jog up" button on the manual operation box can be used to slow down the liquid level rise, thereby improving the success rate of pouring.

[0083] When the molten steel level exceeds 140mm below the copper plate mouth, the stopper rod 20 is controlled to enter the automatic control state, the crystallizer vibration and the straightening machine are automatically started, and the set liquid level begins to climb to the target value, and the automatic pouring mode ends.

[0084] In addition, this embodiment also provides some treatment measures for handling abnormal situations of the automatic pouring device of the tundish of the slab continuous casting machine, which are as follows:

[0085] When molten steel flows out before automatic pouring, automatic pouring should be prohibited and manual pouring should be adopted.

[0086] When the liquid level rising speed is uncontrollable during the pouring process, the stopper rod 20 is manually controlled.

[0087] When the dummy rod slides down, the stopper rod 20 is manually controlled.

[0088] When the liquid level still cannot reach the position 140mm below the copper plate mouth after the longest pouring time has passed, the stopper rod 20 is manually controlled.

[0089] During the automatic flow opening process, the liquid level in the crystallizer fluctuates violently; when the submerged nozzle 101 falls off the bottom, breaks, pierces the steel, or other situations that the foreman believes seriously affect stable casting occur, the stopper rod 20 is manually controlled.

[0090] In summary, the embodiment of the present invention provides an automatic pouring device for a tundish of a slab continuous casting machine and a method for using the same. The automatic pouring device for a tundish of a slab continuous casting machine comprises a tundish body 10, a stopper rod 20, a driving module 30, a crystallization module 40, a sensor module 50 and a control module. An immersion nozzle 101 is provided at the bottom of the tundish body 10. The stopper rod 20 is arranged in the tundish body 10, and the stopper rod 20 can be lifted and lowered in the immersion nozzle 101 to open or block the immersion nozzle 101. The driving module 30 and the stopper rod 20 The drive module 30 drives the stopper rod 20 to move up and down, the crystallization module 40 is arranged at the outlet position of the immersion nozzle 101, the steel flow in the tundish 10 is used to flow into the crystallization module 40 through the immersion nozzle 101, the sensor module 50 is arranged on the crystallization module 40, the sensor module 50 continuously measures the liquid level of the molten steel in the crystallization module 40, the control module is connected with the sensor module 50 and the drive module 30 at the same time, and the control module is used to control the drive module 30 after receiving the liquid level signal of the sensor module 50. When in use, the stopper rod 20 is driven to move up and down in the immersion nozzle 101 by the drive module 30, the crystallization module 40 is provided with the sensor module 50, the sensor module 50 can continuously measure the liquid level of the molten steel in the crystallization module 40, and transmit the height data to the control module, and the control module controls the start and stop of the drive module 30 according to the height data of the sensor module 50, thereby realizing the control of the lifting and lowering movement of the stopper rod 20 and achieving the effect of accurately adjusting the steel flow. The automatic pouring device for the tundish of the slab continuous casting machine can automatically start pouring, thereby improving the success rate of the tundish pouring.

[0091] The method for using the tundish automatic pouring device for a slab continuous casting machine uses the tundish automatic pouring device for a slab continuous casting machine, and the method for using the tundish automatic pouring device includes: installing a driving module 30 outside the tundish body 10; detecting whether the driving module 30 works normally; pouring the large ladle; automatically starting the pouring after the molten steel tonnage in the middle ladle reaches 16 tons; and the driving module 30 drives the stopper rod 20 to start moving according to a preset action. The method for using the tundish automatic pouring device for a slab continuous casting machine can automatically start pouring, thereby improving the success rate of pouring the tundish.

[0092] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An automatic pouring device for a tundish of a slab continuous casting machine, characterized in that: include: An intermediate package (10), wherein a submerged water inlet (101) is provided at the bottom of the intermediate package (10); a stopper rod (20), the stopper rod (20) being arranged in the tundish (10), and the stopper rod (20) being arranged in the submerged nozzle (101) in a liftable manner, so as to open or block the submerged nozzle (101); a driving module (30), the driving module (30) being connected to the stopper rod (20), and the driving module (30) driving the stopper rod (20) to perform lifting motion; a crystallization module (40), the crystallization module (40) being arranged at the outlet position of the submerged nozzle (101), and the steel flow in the tundish (10) is used to flow into the crystallization module (40) through the submerged nozzle (101); A sensor module (50), the sensor module (50) being arranged on the crystallization module (40), the sensor module (50) continuously measuring the height of the molten steel liquid level in the crystallization module (40); A control module is connected to the sensor module (50) and the drive module (30) at the same time, and is used to control the drive module (30) after receiving a liquid level signal from the sensor module (50).

2. The automatic pouring device for the tundish of a slab continuous casting machine according to claim 1, characterized in that: The driving module (30) comprises a driver (31) and a transmission member (32); the driver (31) is connected to the control module, the driver (31) is connected to the transmission member (32), the transmission member (32) is connected to the stopper rod (20), and the transmission member (32) drives the stopper rod (20) to perform lifting movement under the drive of the driver (31).

3. The automatic pouring device for tundish of slab continuous casting machine according to claim 2, characterized in that: The transmission member (32) comprises a vertical rod (321) and a cross rod (322), the bottom end of the vertical rod (321) is connected to the driver (31), the top end of the vertical rod (321) is connected to one end of the cross rod (322), and the other end of the cross rod (322) is connected to the stopper rod (20).

4. The automatic pouring device for the tundish of a slab continuous casting machine according to claim 3, characterized in that: The automatic pouring device for the tundish of the slab continuous casting machine also includes a manual pressure handle (60), which is connected to the vertical rod (321), and the manual pressure handle (60) is used to manually drive the vertical rod (321) to perform lifting movement.

5. The automatic pouring device for tundish of slab continuous casting machine according to claim 1, characterized in that: The sensor module (50) is a Ramon electromagnetic liquid level gauge.

6. A method for using a tundish self-casting device for a slab continuous casting machine, characterized in that: The automatic pouring device for tundish of a slab continuous casting machine according to any one of claims 1 to 5 is used, and the method of using the device comprises: A driving module (30) is installed outside the intermediate package (10); Detecting whether the driving module (30) is working normally; The big bag starts pouring; When the molten steel tonnage in the tundish reaches 16t, pouring starts automatically; The driving module (30) drives the stopper rod (20) to start moving according to a preset action.

7. The method for using the tundish self-casting device of the slab continuous casting machine according to claim 6, characterized in that: The step of the driving module (30) driving the stopper rod (20) to start moving according to a preset action comprises: The stopper rod (20) moves upward, thereby opening the submerged water outlet (101) by 15 mm and continuing for a first preset time; After the first preset time has passed, the stopper rod (20) continues to move to open the submerged water outlet (101) by 7 mm for a second preset time; After the second preset time has passed, the stopper rod (20) continues to move, opening the submerged water outlet (101) by 10 mm and maintaining the opening.

8. The method for using the tundish self-casting device of the slab continuous casting machine according to claim 7, characterized in that: The step of the driving module (30) driving the stopper rod (20) to start moving according to a preset action also includes: The first preset time is 8 seconds, and the second preset time is 2 seconds.

9. The method for using the tundish self-casting device of a slab continuous casting machine according to claim 6, characterized in that: The method for using the tundish self-casting device for the slab continuous casting machine also includes: Before automatic pouring, manual intervention is performed according to the actual steel flow situation.

10. The method for using the tundish self-casting device of the slab continuous casting machine according to claim 9, characterized in that: The steps of manually intervening according to the actual steel flow conditions before automatic pouring include: When the steel flow is too large, the height of the stopper rod (20) is manually lowered, and when the steel flow is too small, the height of the stopper rod (20) is manually raised, wherein the height of each movement of the stopper rod (20) is 1 mm.

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