Method and device for rolling multi-branch seamless steel pipes, electronic device and medium

Abstract

The application provides a rolling method and device for multiple seamless steel pipes, electronic equipment and medium, and relates to the technical field of seamless steel pipe rolling. The method comprises the following steps: obtaining a second initial wall thickness of a second steel pipe; determining a second steel pipe rolling speed of each rack in the tension reducing rolling process of the second steel pipe according to the second initial wall thickness and preset rolling data; determining a current state of each to-be-controlled rack according to the distance between the tail of the first steel pipe and each to-be-controlled rack; and controlling each to-be-controlled rack in the idle state to work at the corresponding second steel pipe rolling speed to roll the second steel pipe. The second steel pipe is rolled at the corresponding second steel pipe rolling speed by controlling each to-be-controlled rack in the idle state, so that multiple steel pipes can be rolled at the same time, the rolling of each steel pipe is not affected, and the production efficiency can be improved.

Description

Technical Field

[0001] This application relates to the field of seamless steel pipe rolling technology, specifically to a rolling method, apparatus, electronic equipment, and medium for rolling multiple seamless steel pipes. Background Technology

[0002] In the production of seamless steel pipes, the longitudinal wall thickness of finished steel pipes can be corrected piece by piece through Wall Thickness Control Average (WTCA) during the tension reduction process, reducing the wall thickness difference. This function requires setting different additional rolling speeds for each steel pipe. Currently, the production method involves the rolling mill reaching a set speed before the steel pipe enters the tension reduction mill, and then switching to the set speed for the next steel pipe after it leaves the mill. With increased production pace, there are situations where the next steel pipe is being rolled before the previous one has even left the mill, meaning two steel pipes are being rolled simultaneously within the mill. The aforementioned production method cannot meet this requirement. To solve this problem, the production pace needs to be slowed down to avoid rolling two steel pipes simultaneously, which directly impacts further capacity increases. Summary of the Invention

[0003] In view of the shortcomings of the above-mentioned related technologies, this application provides a rolling method, apparatus, electronic equipment and medium for multiple seamless steel pipes to solve the above-mentioned technical problems.

[0004] This application provides a method for rolling multi-spindle seamless steel pipes, the method comprising:

[0005] Obtain the second initial wall thickness of the second steel pipe;

[0006] Based on the second initial wall thickness and preset rolling data, determine the rolling speed of the second steel pipe on each stand during the tension reduction rolling process;

[0007] The current state of each frame to be controlled is determined based on the distance between the tail of the first steel pipe and each frame to be controlled. The first steel pipe is the steel pipe that is being tensioned and reduced in diameter and rolled adjacent to the second steel pipe. The frame to be controlled is the frame located between the head of the second steel pipe and the tail of the first steel pipe. The current state is either working or idle.

[0008] Each stand in the idle state operates according to its corresponding second steel pipe rolling speed to roll the second steel pipe.

[0009] In one embodiment of this application, after each control frame in the idle state operates according to the corresponding second steel pipe rolling speed, the method further includes:

[0010] Obtain the first distance between the tail end of the first steel pipe and the starting position of the tension reduction rolling;

[0011] When the first distance is greater than or equal to the preset safety distance, the rolling of the second steel pipe begins.

[0012] In one embodiment of this application, determining the current state of each frame to be controlled based on the distance between the tail end of the first steel pipe and each frame to be controlled includes:

[0013] According to the rolling sequence of tension reduction, the second distance between each frame to be controlled and the tail of the first steel pipe is obtained sequentially;

[0014] When the second distance is greater than or equal to the preset state switching distance, the current state of the rack to be controlled is determined to be idle.

[0015] In one embodiment of this application, the rolling speed of the second steel pipe on each stand during the tension reduction rolling process is determined based on the second initial wall thickness and preset rolling data, including:

[0016] Obtain a data table showing the correspondence between wall thickness difference and rotation speed difference, the preset initial wall thickness corresponding to the second steel pipe, and the preset rotation speed of each frame;

[0017] The difference between the second initial wall thickness and the preset initial wall thickness is determined as the current wall thickness difference;

[0018] The target rotational speed difference is determined based on the current wall thickness difference and the data table.

[0019] The sum of the target speed difference and the preset speed is determined as the second steel pipe rolling speed.

[0020] In one embodiment of this application, before obtaining the second initial wall thickness of the second steel pipe, the method further includes:

[0021] Obtain the outer diameter, weight, and length of the second steel pipe;

[0022] The second initial wall thickness of the second steel pipe is determined based on the outer diameter, weight, and length.

[0023] To achieve the above and other related objectives, this application provides a rolling apparatus for multiple seamless steel pipes, comprising:

[0024] The data acquisition module is used to obtain the second initial wall thickness of the second steel pipe;

[0025] The rotation speed determination module is used to determine the second steel pipe rolling speed of each stand during the tension reduction rolling process based on the second initial wall thickness and preset rolling data.

[0026] The status determination module is used to determine the current status of each frame to be controlled based on the distance between the tail end of the first steel pipe and each frame to be controlled. The first steel pipe is the steel pipe that is being tensioned and reduced in diameter and rolled adjacent to the second steel pipe. The frame to be controlled is the frame located between the head end of the second steel pipe and the tail end of the first steel pipe. The current status is either working or idle.

[0027] The speed control module is used to control each idle frame to operate at the corresponding second steel pipe rolling speed in order to roll the second steel pipe.

[0028] In one embodiment of this application, the rolling apparatus for the multiple seamless steel pipes further includes:

[0029] The first distance acquisition module is used to acquire the first distance between the tail end of the first steel pipe and the starting position of tension reduction rolling;

[0030] The rolling control module is used to start rolling the second steel pipe when the first distance is greater than or equal to the preset safety distance.

[0031] In one embodiment of this application, the state determination module includes:

[0032] The second distance acquisition unit is used to sequentially acquire the second distance between each of the frames to be controlled and the tail of the first steel pipe according to the rolling sequence of tension reduction.

[0033] The judgment unit is used to determine the current state of the rack to be controlled as idle when the second distance is greater than or equal to the preset state switching distance.

[0034] To achieve the above and other related objectives, this application also provides an electronic device, the electronic device comprising:

[0035] One or more processors;

[0036] A storage device for storing one or more programs that, when executed by one or more processors, cause the electronic device to perform the rolling method for multiple seamless steel pipes as described above.

[0037] To achieve the above and other related objectives, this application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a computer processor, causes the computer to perform the rolling method for multiple seamless steel pipes as described above.

[0038] As described above, the rolling method, apparatus, electronic equipment, and medium for multi-spindle seamless steel pipes provided in this application have the following beneficial effects:

[0039] This application discloses a method for rolling multiple seamless steel pipes. The method involves obtaining the second initial wall thickness of the second steel pipe, determining the rolling speed of the second steel pipe on each stand during tension reduction rolling based on the second initial wall thickness and preset rolling data, and determining the current state of each stand to be controlled based on the distance between the tail of the first steel pipe and each stand to be controlled. Each stand to be controlled in an idle state is then controlled to operate at its corresponding second steel pipe rolling speed to roll the second steel pipe. By controlling each stand to be controlled in an idle state to roll the second steel pipe at its corresponding second steel pipe rolling speed, multiple steel pipes can be rolled simultaneously without affecting the rolling of each pipe, thus improving production efficiency.

[0040] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0041] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. In the drawings:

[0042] Figure 1 This is a flowchart illustrating a rolling method for multiple seamless steel pipes, as shown in an exemplary embodiment of this application;

[0043] Figure 2 This is a schematic diagram illustrating the rotational speed during the rolling process of multiple seamless steel pipes, as shown in an exemplary embodiment of this application.

[0044] Figure 3 This is a schematic diagram of the structure of a rolling system for multiple seamless steel pipes, as illustrated in an exemplary embodiment of this application.

[0045] Figure 4 This is a schematic diagram illustrating the rolling process of multiple seamless steel pipes in an exemplary embodiment of this application;

[0046] Figure 5 This is a block diagram illustrating a rolling apparatus for multiple seamless steel pipes, as shown in an exemplary embodiment of this application. Detailed Implementation

[0047] The embodiments of this application will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. This application can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be understood that the preferred embodiments are only for illustrating this application and are not intended to limit the scope of protection of this application.

[0048] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. Therefore, the drawings only show the components related to this application and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0049] In the following description, numerous details are explored to provide a more thorough explanation of embodiments of the present application. However, it will be apparent to those skilled in the art that embodiments of the present application may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the present application.

[0050] Please see Figure 1 , Figure 1 This is a flowchart illustrating a rolling method for multiple seamless steel pipes, as shown in an exemplary embodiment of this application. (Reference) Figure 1 It can be seen that the rolling method for these multiple seamless steel pipes may include:

[0051] Step S110: Obtain the second initial wall thickness of the second steel pipe.

[0052] In one embodiment of this application, the second initial wall thickness of the second steel pipe can be obtained before rolling begins, or the wall thickness of the second steel pipe can be obtained after the second steel pipe reaches the detection position. The detection position can be set by the operator according to the actual production process.

[0053] In an exemplary embodiment, before performing step S110 to obtain the second initial wall thickness of the second steel pipe, the outer diameter, weight, and length of the second steel pipe may also be obtained, and the second initial wall thickness of the second steel pipe may be determined based on the outer diameter, weight, and length.

[0054] For example, the wall thickness of each steel pipe can be determined according to a wall thickness determination formula, which may include:

[0055]

[0056] Where G is weight, L is length, D is outer diameter, and Δd is wall thickness.

[0057] Step S120: Based on the second initial wall thickness and preset rolling data, determine the rolling speed of the second steel pipe on each stand during the tension reduction rolling process.

[0058] In one embodiment of this application, the rolling speed of the second steel pipe on each stand during the tension reduction rolling process can be determined based on the second initial wall thickness and preset rolling data. During the tension reduction rolling process, each stand has a corresponding rolling speed, and the rolling speeds corresponding to each stand are generally different.

[0059] It should be noted that the preset rolling data may include the target wall thickness (that is, the final wall thickness after rolling) and various process parameters related to the stand (such as the work roll diameter, the linear speed of the roll, the speed of the roll, the tension coefficient, and other parameters).

[0060] In an exemplary embodiment, step S120, which determines the rolling speed of the second steel pipe on each stand during the tension reduction rolling process based on the second initial wall thickness and preset rolling data, may include steps S121 to S124.

[0061] Step S121: Obtain the data table showing the correspondence between the wall thickness difference and the rotation speed difference, the preset initial wall thickness corresponding to the second steel pipe, and the preset rotation speed of each frame.

[0062] In one embodiment of this application, a data table representing the correspondence between wall thickness difference and rotational speed difference can be obtained first. This data table can be pre-calibrated by the operator. During production, the batch of steel pipes, including the second and first steel pipes, has preset rolling data, which may include data such as the preset initial wall thickness of the batch of steel pipes. Then, the preset rotational speed of each stand corresponding to the batch of steel pipes can be determined based on the preset initial wall thickness and other data. In actual production, due to various reasons, there may be a difference between the actual initial wall thickness of the steel pipe and the preset initial wall thickness. Therefore, the preset rotational speed can be adjusted based on the wall thickness difference to accommodate steel pipes with different wall thicknesses.

[0063] It should be noted that the preset speed can be the preset basic rolling speed. The preset speed can be determined based on the initial outer diameter, initial wall thickness, finished outer diameter, and finished wall thickness (i.e., the target wall thickness) of the steel pipe to be rolled. The preset speed of each stand is then determined based on the set pass.

[0064] Step S122: The difference between the second initial wall thickness and the preset initial wall thickness is determined as the current wall thickness difference.

[0065] In one embodiment of this application, the difference between the second initial wall thickness and the preset initial wall thickness can be determined as the current wall thickness difference.

[0066] Step S123: Determine the target rotational speed difference based on the current wall thickness difference and the data table.

[0067] In one embodiment of this application, the target rotational speed difference can be determined by looking up the table or other means based on the current wall thickness difference and the data table obtained in step S121.

[0068] Step S124: The sum of the target speed difference and the preset speed is determined as the second steel pipe rolling speed.

[0069] In one embodiment of this application, the sum of the target speed difference and the preset speed can be determined as the second steel pipe rolling speed.

[0070] For example, a calculation formula representing the correspondence between the wall thickness difference and the rotational speed difference can be obtained in advance, and the target rotational speed difference can be calculated based on the current wall thickness difference and the calculation formula.

[0071] It should be noted that, following steps S121 to S124, the preset speed can be adjusted to achieve the second steel pipe rolling speed based on the preset speed. The speed of each stand can be adjusted according to the actual wall thickness of each steel pipe, making it more suitable for the actual wall thickness of each steel pipe.

[0072] Step S130: Determine the current state of each frame to be controlled based on the distance between the tail of the first steel pipe and each frame to be controlled.

[0073] The first steel pipe is the steel pipe that is being rolled under tension reduction before the second steel pipe. The frame to be controlled is the frame located between the head of the second steel pipe and the tail of the first steel pipe. The current state is either working or idle.

[0074] In one embodiment of this application, the current state of each frame to be controlled can be determined based on the distance between the tail end of the first steel pipe and each frame to be controlled. Then, each frame to be controlled can be controlled based on its current state.

[0075] It should be noted that the stand currently in the working state is the stand that is rolling the first steel pipe. At this time, the stand operates at the rolling speed corresponding to the first steel pipe. Before the second steel pipe begins tension reduction rolling, the head of the second steel pipe can be replaced with the rolling start position. That is, before the second steel pipe begins rolling, the stand between the tail of the second steel pipe and the rolling start position can be defined as the stand to be controlled.

[0076] In an exemplary embodiment, step S130, which determines the current state of each frame to be controlled based on the distance between the tail of the first steel pipe and each frame to be controlled, may include steps S131 and S132.

[0077] Step S131: According to the rolling sequence of tension reduction, the second distance between each frame to be controlled and the tail of the first steel pipe is obtained sequentially.

[0078] In one embodiment of this application, the second distance between each controllable stand and the tail of the first steel pipe is obtained sequentially according to the rolling sequence of tension reduction. That is, starting from the rolling start position, the second distance between each controllable stand and the tail of the first steel pipe is determined sequentially according to the rolling direction.

[0079] For example, a material detection element can be set at the inlet of the tension reducing mill. The head of the first steel pipe is detected by the material detection element as the tracking starting point. The real-time position is obtained by integrating the head and tail positions of the first steel pipe based on the linear speed of the conveyor roller and the deformation of the steel pipe.

[0080] Step S132: When the second distance is greater than or equal to the preset state switching distance, the current state of the rack to be controlled is determined to be idle.

[0081] In one embodiment of this application, when the second distance is greater than or equal to the preset state switching distance, it can be determined that the first steel pipe has left the control frame corresponding to the second distance, and at this time, the change in the rotation speed of the control frame will not affect the rolling of the first steel pipe. Therefore, the current state of the control frame can be determined as an idle state.

[0082] It should be noted that the current state of each stand to be controlled is also determined sequentially according to the rolling sequence of tension reduction.

[0083] For example, a sensing device can be placed at a preset state switching distance. When the sensing device first senses the steel pipe, it can be determined that the head of the steel pipe has arrived. After that, the sensing device can continue to sense the presence of the steel pipe. When the sensing device does not sense the steel pipe, it can be determined that the distance between the steel pipe and the frame to be controlled is greater than the preset state switching distance. At this time, the current state of the frame to be controlled can be determined as an idle state.

[0084] For example, the process of determining the position of a steel pipe may include: correcting the position through a bite signal; during tracking, it is important to identify various fault states of the rolled piece (i.e., the steel pipe), such as whether there is jamming. The external interface of the material tracking program includes the input of materials entering the tracking area, the removal of materials leaving the tracking area, the actions of transportation and rolling equipment, detector signals, etc. Each steel pipe entering the rolling zone needs to occupy a data storage area to store the basic information of the steel pipe, such as ID number, length, and head and tail positions. For easy retrieval later, the rolling parameter information of the steel pipe is appended to the basic information of the steel pipe. While obtaining the position of the steel pipe in real time, the required roll speed and CEC setting of the current steel pipe can be easily obtained.

[0085] Step S140: Control each idle frame to operate according to the corresponding second steel pipe rolling speed to roll the second steel pipe.

[0086] In one embodiment of this application, each idle frame to be controlled can be controlled to work according to the corresponding second steel pipe rolling speed.

[0087] In an exemplary embodiment, after step S140, the rolling method for multiple seamless steel pipes provided in this application embodiment may further include steps S210 and S220.

[0088] Step S210: Obtain the first distance between the tail end of the first steel pipe and the starting position of tension reduction rolling.

[0089] In one embodiment of this application, since a first steel pipe is being rolled before the second steel pipe, it is necessary to determine a first distance between the tail of the first steel pipe and the tension reduction rolling start position so that the second steel pipe can be rolled when the first distance meets the preset conditions.

[0090] Step S220: When the first distance is greater than or equal to the preset safety distance, the rolling of the second steel pipe begins.

[0091] In one embodiment of this application, when the first distance is greater than or equal to a preset safety distance, starting the rolling of the second steel pipe will not affect the rolling process of the second steel pipe, thus improving production safety. The preset safety distance can be set by the operator according to the actual situation.

[0092] It should be noted that when the first distance is less than the preset safety distance, only the rotation speed of the frame to be controlled can be changed, and the second steel pipe cannot be rolled to avoid affecting production.

[0093] It should be noted that a rolling safety distance between the second steel pipe and the first steel pipe can also be set during rolling, and the rolling distance between the head of the second steel pipe and the tail of the first steel pipe can be obtained in real time. When the rolling distance is less than the rolling safety distance, an alarm can be issued or other operations can be performed to prevent problems such as contact between the second steel pipe and the first steel pipe during rolling.

[0094] For example, please refer to Figure 2 , Figure 2 This is a schematic diagram illustrating the rotational speed during the rolling process of multiple seamless steel pipes, as shown in an exemplary embodiment of this application. Figure 2 Only the rotational speed of the 7th stand during rolling is shown. The horizontal dashed line indicates the preset rotational speed of the 7th stand when rolling this batch of steel pipes. During rolling, because the head and tail of the steel pipe are thicker than the middle section, the rotational speed during the rolling of the head and tail differs from the calculated stand rotational speed. Only the stand rotational speed during the rolling of the middle section of the steel pipe is shown for the previous and next steel pipes; the rotational speeds during the rolling of the head and tail are not shown. It should be noted that after the 7th stand starts working, the rolling time for the first steel pipe can be t1 to t2, and the rolling time for the second steel pipe can be t3 to t4. The rolling of this batch of steel pipes is completed according to the time division, where t1 and t2 are both less than t3 and t4.

[0095] For example, please refer to Figure 3 , Figure 3 This is a schematic diagram of a rolling system for multiple seamless steel pipes, illustrating an exemplary embodiment of this application. The length, weight, and outer diameter of the steel pipe measured by the measuring device can be input into the process model. Rolling parameters (including the target rolled wall thickness) can also be input into the process model. The process model can determine the speed difference based on the input parameters. The speed setting module determines the stand speed based on the speed difference and the preset speed. The tension reducing mill control logic can be configured with the rolling method for multiple seamless steel pipes provided in this embodiment. The speed of each stand can be controlled by the transmission device, relying on the speed difference of the rolls to reduce the tension of the currently rolled steel pipe. The material tracking logic can determine the current position of the steel pipe in real time based on the data sent by the detection element. The equipment operation feedback can provide real-time feedback on the equipment's operating status and other information. The entire control logic is implemented by a control system composed of a programmable logic controller (PLC) or a process computer. It receives input signals from field sensors or feedback signals from the frequency converter, implements the process mechanism model calculation and feedback correction, and controls the simultaneous rolling of multiple seamless steel pipes. It also sends control commands and speed settings to the frequency converter.

[0096] For example, please refer to Figure 4 , Figure 4This is a schematic diagram illustrating the rolling process of multiple seamless steel pipes, as shown in an exemplary embodiment of this application. During rolling, a measuring device and an inlet detector can be installed at the inlet position of the steel pipe. The measuring device can be used to measure the wall thickness of the steel pipe (and also the weight, length, and outer diameter of the steel pipe). The inlet detector can be used to monitor whether the steel pipe is in position, so as to start calculating the rotational speed of each stand corresponding to the in-position steel pipe (the inlet detector is installed at the inlet of the tension reduction mill, and the inlet detection adopts a photoelectric switch, which consists of a transmitter and a receiver, installed on both sides. When the measured object enters the laser barrier zone, it outputs an electrical level signal. The starting point of the steel pipe tracking position is determined according to the electrical level signal. The signal indicating that the steel pipe has completed rolling is generated by the tracking calculation result). When the first steel pipe begins rolling, each stand operates according to the rotational speed of the stand corresponding to the first steel pipe. Once the second steel pipe begins rolling, the entire tension reducing mill can be divided into several stands. Some stands roll the first steel pipe at the same speed as the first steel pipe, while the stands that have already rolled the first steel pipe roll the second steel pipe. The stands rolling the second steel pipe operate at the speed corresponding to the stands that rolled the second steel pipe.

[0097] In summary, the solution of this application obtains the second initial wall thickness of the second steel pipe, determines the rolling speed of the second steel pipe on each stand during the tension reduction rolling process based on the second initial wall thickness and preset rolling data, determines the current state of each stand to be controlled based on the distance between the tail of the first steel pipe and each stand to be controlled, and controls each stand to be controlled in an idle state to work at the corresponding second steel pipe rolling speed to roll the second steel pipe. By controlling each stand to be controlled in an idle state to roll the second steel pipe at the corresponding second steel pipe rolling speed, multiple steel pipes can be rolled simultaneously without affecting the rolling of each steel pipe, thus improving production efficiency.

[0098] Figure 5 This is a block diagram illustrating a rolling apparatus for multiple seamless steel pipes, as shown in an exemplary embodiment of this application.

[0099] like Figure 5 As shown, the exemplary rolling apparatus for multiple seamless steel pipes may include:

[0100] The data acquisition module 510 is used to acquire the second initial wall thickness of the second steel pipe.

[0101] The rotation speed determination module 520 is used to determine the rolling speed of the second steel pipe in each stand during the tension reduction rolling process, based on the second initial wall thickness and preset rolling data.

[0102] The status determination module 530 is used to determine the current status of each frame to be controlled based on the distance between the tail end of the first steel pipe and each frame to be controlled. The first steel pipe is the steel pipe that is being tensioned and reduced in diameter and is adjacent to the second steel pipe. The frame to be controlled is the frame located between the head end of the second steel pipe and the tail end of the first steel pipe. The current status is either working or idle.

[0103] The speed control module 540 is used to control each stand to be controlled in the idle state to work according to the corresponding second steel pipe rolling speed in order to roll the second steel pipe.

[0104] In one embodiment of this application, the rolling apparatus for multiple seamless steel pipes further includes:

[0105] The first distance acquisition module is used to acquire the first distance between the tail end of the first steel pipe and the starting position of tension reduction rolling;

[0106] The rolling control module is used to start rolling the second steel pipe when the first distance is greater than or equal to the preset safety distance.

[0107] In one embodiment of this application, the state determination module includes:

[0108] The second distance acquisition unit is used to sequentially acquire the second distance between each frame to be controlled and the tail of the first steel pipe according to the rolling sequence of tension reduction.

[0109] The judgment unit is used to determine the current state of the rack to be controlled as idle when the second distance is greater than or equal to the preset state switching distance.

[0110] It should be noted that the rolling apparatus for multiple seamless steel pipes provided in the above embodiments and the rolling method for multiple seamless steel pipes provided in the above embodiments belong to the same concept. The specific operation methods of each module and unit have been described in detail in the method embodiments and will not be repeated here. In practical applications, the rolling apparatus for multiple seamless steel pipes provided in the above embodiments can be assigned to different functional modules as needed, that is, the internal structure of the system can be divided into different functional modules to complete all or part of the functions described above. This is not a limitation here.

[0111] Embodiments of this application also provide an electronic device, including: one or more processors; and a storage device for storing one or more programs, which, when executed by one or more processors, cause the electronic device to implement the rolling method for multiple seamless steel pipes provided in the above embodiments.

[0112] The units described in the embodiments of this application can be implemented in software or hardware, and the described units can also be located in a processor. The names of these units do not necessarily limit the specific unit itself.

[0113] Another aspect of this application provides a computer-readable storage medium storing a computer program thereon, which, when executed by a computer's processor, causes the computer to perform the rolling method for multiple seamless steel pipes provided in the various embodiments above. This computer-readable storage medium may be included in the electronic device described in the above embodiments, or it may exist independently and not assembled into the electronic device.

[0114] Another aspect of this application provides a computer program product or computer program including computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform the rolling method for multiple seamless steel pipes provided in the various embodiments above.

[0115] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "comprising" and "including" as used throughout the specification and claims are open-ended terms and should therefore be interpreted as "comprising but not limited to".

[0116] The above embodiments are merely illustrative of the principles and effects of this application and are not intended to limit this application. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this application. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this application should still be covered by the claims of this application.

Claims

1. A method for rolling multi-branch seamless steel pipes, characterized in that, include: Obtain the second initial wall thickness of the second steel pipe; Based on the second initial wall thickness and preset rolling data, determine the rolling speed of the second steel pipe on each stand during the tension reduction rolling process; The current state of each frame to be controlled is determined based on the distance between the tail of the first steel pipe and each frame to be controlled. The first steel pipe is the steel pipe that is being tensioned and reduced in diameter and rolled adjacent to the second steel pipe. The frame to be controlled is the frame located between the head of the second steel pipe and the tail of the first steel pipe. The current state is either working or idle. Each stand to be controlled in the idle state operates according to the corresponding second steel pipe rolling speed to roll the second steel pipe.

2. The rolling method for multiple seamless steel pipes according to claim 1, characterized in that, After each idle stand to be controlled operates according to the corresponding second steel pipe rolling speed, the method further includes: Obtain the first distance between the tail end of the first steel pipe and the starting position of the tension reduction rolling; When the first distance is greater than or equal to the preset safety distance, the rolling of the second steel pipe begins.

3. The rolling method for multiple seamless steel pipes according to claim 1, characterized in that, Based on the distance between the tail end of the first steel pipe and each frame to be controlled, determine the current state of each frame to be controlled, including: According to the rolling sequence of tension reduction, the second distance between each frame to be controlled and the tail of the first steel pipe is obtained sequentially; When the second distance is greater than or equal to the preset state switching distance, the current state of the rack to be controlled is determined to be idle.

4. The rolling method for multiple seamless steel pipes according to claim 1, characterized in that, Based on the second initial wall thickness and preset rolling data, the rolling speed of the second steel pipe on each stand during the tension reduction rolling process is determined, including: Obtain a data table showing the correspondence between wall thickness difference and rotation speed difference, the preset initial wall thickness corresponding to the second steel pipe, and the preset rotation speed of each frame; The difference between the second initial wall thickness and the preset initial wall thickness is determined as the current wall thickness difference; The target rotational speed difference is determined based on the current wall thickness difference and the data table. The sum of the target speed difference and the preset speed is determined as the second steel pipe rolling speed.

5. The rolling method for multiple seamless steel pipes according to claim 1, characterized in that, Before obtaining the second initial wall thickness of the second steel pipe, the method further includes: Obtain the outer diameter, weight, and length of the second steel pipe; The second initial wall thickness of the second steel pipe is determined based on the outer diameter, weight, and length.

6. A rolling apparatus for multiple seamless steel pipes, characterized in that, include: The data acquisition module is used to obtain the second initial wall thickness of the second steel pipe; The rotation speed determination module is used to determine the second steel pipe rolling speed of each stand during the tension reduction rolling process based on the second initial wall thickness and preset rolling data. The status determination module is used to determine the current status of each frame to be controlled based on the distance between the tail end of the first steel pipe and each frame to be controlled. The first steel pipe is the steel pipe that is being tensioned and reduced in diameter and rolled adjacent to the second steel pipe. The frame to be controlled is the frame located between the head end of the second steel pipe and the tail end of the first steel pipe. The current status is either working or idle. The speed control module is used to control each idle frame to operate at the corresponding second steel pipe rolling speed in order to roll the second steel pipe.

7. The rolling apparatus for multiple seamless steel pipes according to claim 6, characterized in that, The rolling apparatus for multiple seamless steel pipes also includes: The first distance acquisition module is used to acquire the first distance between the tail end of the first steel pipe and the starting position of tension reduction rolling; The rolling control module is used to start rolling the second steel pipe when the first distance is greater than or equal to the preset safety distance.

8. The rolling apparatus for multiple seamless steel pipes according to claim 6, characterized in that, The status determination module includes: The second distance acquisition unit is used to sequentially acquire the second distance between each of the frames to be controlled and the tail of the first steel pipe according to the rolling sequence of tension reduction. The judgment unit is used to determine the current state of the rack to be controlled as an idle state when the second distance is greater than or equal to the preset state switching distance.

9. An electronic device, characterized in that, The electronic device includes: One or more processors; A storage device for storing one or more programs, which, when executed by the one or more processors, cause the electronic device to implement the rolling method for multiple seamless steel pipes as described in any one of claims 1 to 5.

10. A computer-readable storage medium, characterized in that, It stores a computer program, which, when executed by the computer's processor, causes the computer to perform the rolling method for multiple seamless steel pipes as described in any one of claims 1 to 5.

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