Method for preventing sand leakage from a ladle for a converter

Abstract

The present application relates to a kind of methods for preventing ladle sand leakage for converter, infrared detection device is installed in converter channel ladle receiving position, preset the initial distance of alarm of infrared detection device;The distance between the infrared detection device and the ladle is detected, when the detection distance is greater than the initial distance of alarm, and gradually increasing trend is shown, send the sand filling instruction of ladle;After receiving the sand filling instruction of ladle in instruction receiving end, filling drainage sand operation is carried out in execution end.This scheme improves the integrity and accuracy of data collection in the production process of converter by detecting more characteristic parameters, can accurately prompt the ladle to position in the transition stage of automation, so that the operator can even fill drainage sand operation;At the same time, this scheme changes the operation logic when filling drainage sand, can use the accurate ladle to position signal as the start signal of equipment automatic filling drainage sand operation, promote the intelligentization of converter equipment.

Description

Technical Field

[0001] This invention belongs to the field of steelmaking process technology and relates to a method for preventing sand leakage from the ladle used in converters. Background Technology

[0002] Before the converter taps out steel, the ladle nozzle needs to be filled with guiding sand. Before the ladle receives molten steel, guiding sand is added to the ladle nozzle through a sand adding device. After the molten steel is added, the upper layer of guiding sand that is in direct contact with the molten steel is sintered at high temperature to form a sintered layer of a certain thickness. The lower layer of guiding sand is still granular. After refining, the ladle is transported to the continuous casting station. When the slide gate is opened for pouring, the lower layer of guiding sand flows out automatically. Since there is no support below, the sintered layer that is in contact with the molten steel is crushed under the static pressure of the molten steel, and the molten steel flows out automatically from the ladle nozzle.

[0003] During converter production, various factors, such as equipment mechanical structure and the type of quenching sand, can prevent molten steel from being poured normally during continuous casting. In such cases, oxygen injection is necessary. However, oxygen injection can easily lead to casting interruptions and poses a risk of personal injury during the oxygen injection process in the ladle. To solve the problem of abnormal pouring, existing technologies typically address equipment defects by modifying the mechanical structure of the equipment or by improving the quenching sand formula to suit the process. However, filling the quenching sand is still done manually, which is not only inefficient but also increases the likelihood of missed or delayed operations leading to abnormal pouring. Summary of the Invention

[0004] In view of this, the purpose of this invention is to provide a method for preventing the ladle from being filled with sand in a converter. By detecting parameters with stronger characterization, the completeness and accuracy of data collection during converter production are improved. During the transition to automation, the ladle can be accurately indicated to be in place, enabling operators to perform the filling of the guide sand operation in a timely manner. At the same time, this solution changes the operating logic when filling the guide sand, and can use the accurate ladle arrival signal as the start signal for the automatic filling of the guide sand operation, thus promoting the automation and intelligence of the converter equipment.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A method for preventing sand leakage in converter ladles involves installing an infrared detection device at the ladle receiving position in the converter slag chute, ensuring the infrared direction aligns with the ladle's movement direction, and setting an initial alarm distance for the infrared detection device. The method detects the distance between the infrared detection device and the ladle; when the detected distance exceeds the initial alarm distance and shows a gradually increasing trend, a ladle sand filling command is issued. Upon receiving the ladle sand filling command at the command receiving end, the executing end performs the sand filling and diversion operation.

[0007] Furthermore, the instruction receiving end is a portable alarm receiving device that issues an alarm upon receiving the ladle sand-filling instruction. This solution improves the timeliness of filling the diversion sand by reminding operators carrying the portable alarm receiving device of the designated time points for filling the diversion sand, and reduces the probability of failure to start pouring normally due to missed or untimely operations.

[0008] Furthermore, the portable alarm receiver clears the alarm upon receiving an external confirmation signal. This solution ensures that the operator is aware of the alert and can determine whether an operational error is the cause of a problem that prevents normal pouring.

[0009] Furthermore, after performing the sand-filling operation, the execution terminal sends a confirmation signal to the portable alarm receiving device to clear the alarm. This solution can determine whether the execution terminal has completed the sand-filling operation based on monitoring the action of the execution terminal or monitoring the result of the sand-filling operation, and automatically send a confirmation signal to clear the alarm after completing the sand-filling operation.

[0010] The beneficial effects of this invention are as follows:

[0011] This solution improves the method of collecting ladle arrival data by using the distance between the ladle and the receiving position to characterize the ladle's arrival status. Compared to existing technologies that use point-based detection sensors, this not only further characterizes the ladle's movement direction, improving the completeness of data acquisition, but also avoids the problem of inaccurate arrival detection due to the ladle's own volume, thus improving the accuracy of data acquisition. Simultaneously, using this parameter to set the alarm trigger signal can accurately prompt the execution end to perform the filling and diversion sand operation, improving the filling and diversion sand operation process and laying the foundation for the automation of the filling and diversion sand operation.

[0012] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0013] To make the objectives, technical solutions, and advantages of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein:

[0014] Figure 1 This is a flowchart of the present invention. Detailed Implementation

[0015] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0016] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0017] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, 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, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0018] Please see Figure 1 To prevent sand leakage from the ladle used in a converter, an infrared detection device is installed at the ladle receiving position in the converter slag chute, with the infrared direction aligned with the ladle's movement direction. An initial alarm distance is preset for the infrared detection device. The distance between the infrared detection device and the ladle is detected. When the detected distance exceeds the initial alarm distance and shows a gradually increasing trend, a ladle sand filling command is issued. After receiving the ladle sand filling command at the command receiving end, the execution end performs the sand filling and diversion operation.

[0019] The instruction receiving end is a portable alarm receiving device that issues an alarm upon receiving the ladle sand-filling instruction. The portable alarm receiving device can be a mobile terminal such as a smartphone capable of receiving information. This terminal can provide simple prompts via a buzzer or other sound-emitting structure, or more detailed voice and text prompts via a speaker. When an alarm is issued, it indicates that the steel plate is about to arrive or has already arrived. During the transition of converter equipment to automated production, this solution can remind operators carrying the portable alarm receiving device of the timing for filling the guide sand, improving the timeliness of the fill and reducing the likelihood of failure to start casting due to missed or untimely operations.

[0020] The portable alarm receiver clears the alarm upon receiving an external confirmation signal. Correspondingly, the portable alarm receiver includes the function of receiving external signals. When an alarm is triggered, the operator can confirm and clear the alarm via an external input signal. This ensures that the operator is aware of the warning and can determine whether an operational error is the cause of a problem that prevents normal pouring.

[0021] After performing the sand filling and guiding operation, the execution terminal sends a confirmation signal to the portable alarm receiving device to clear the alarm. This solution can determine whether the execution terminal has completed the sand filling and guiding operation based on the monitoring of the execution terminal's actions or the monitoring results of the sand filling and guiding operation, and automatically sends a confirmation signal to clear the alarm after the sand filling and guiding operation is completed. This solution can use the time difference between issuing the alarm and clearing the alarm as a time characterization parameter for the sand filling and guiding operation, promoting the automation of the sand filling and guiding process and laying the foundation for intelligent production in converters.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A method for preventing sand leakage from the ladle used in a converter, characterized in that: An infrared detection device is installed at the ladle receiving position in the converter slag chute, with the infrared direction aligned with the ladle's movement direction. An initial alarm distance is preset for the infrared detection device. The distance between the infrared detection device and the ladle is detected. When the detected distance is greater than the initial alarm distance and shows a gradually increasing trend, a ladle sand filling command is issued. After receiving the ladle sand filling command at the command receiving end, the execution end performs the filling and diversion sand operation.

2. The method for preventing sand leakage from the ladle used in a converter according to claim 1, characterized in that: The instruction receiver is a portable alarm receiving device that issues an alarm prompt upon receiving the instruction to fill the ladle with sand.

3. The method for preventing sand leakage from the ladle used in a converter according to claim 2, characterized in that: The portable alarm receiver cancels the alarm notification after receiving an external confirmation signal.

4. A method for preventing sand leakage from a converter ladle according to claim 2, characterized in that: After the execution terminal performs the filling and diversion sand operation, it sends a confirmation signal to the portable alarm receiving device to clear the alarm prompt.

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