Vertical thin film can datum line marking method and device and medium

Abstract

The invention relates to a vertical thin-film can datum line marking method and device and a medium, and the method comprises the steps: placing a laser level meter at the center of the bottom of a vertical thin-film can, and adjusting the laser vertically emitted by the laser level meter to coincide with an initial can wall included angle line; initially setting a bottom circle of angular points and a top circle of angular points, and collecting angular point data by adopting a laser gradienter; establishing a Cartesian coordinate system according to the collected angular point data, fixing the coordinate of any angular point at the bottom, and adjusting the coordinates of the remaining angular points at the bottom by setting a constraint sequence; wherein the set constraints include that the connecting line of two adjacent bottom angular points is perpendicular to the straight line where the connecting line of the marking point and the circle center is located, the deviation accumulation of the adjacent tank wall center lines on the plane of the perpendicular angular bisector is smaller than a set threshold value, and the distance between the circle center of the tank bottom and the connecting line of the current wall surface marking point and the opposite wall surface marking point is smaller than the set threshold value; and performing datum line scribing by adopting the adjusted angular point coordinates. Compared with the prior art, the method has the advantages of high efficiency, accuracy and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of baseline scribing for thin-film tanks, and particularly to a vertical thin-film tank baseline scribing method, device, and medium. Background Art

[0002] As a core facility for liquefied natural gas storage, vertical thin-film tanks are widely used in energy storage projects due to their advantages such as efficient space utilization, controllable construction costs, and long service life. For the inner tank system in a vertical thin-film tank, there are extremely high requirements for the precise delineation of the baseline, and the accuracy of the baseline is directly related to the overall performance and safe operation of the storage tank.

[0003] The structure of a vertical thin-film tank is complex, consisting of multiple layers of tank walls and a large-area tank bottom. The tank bottom is usually divided into multiple functional sectors. During the construction process, the corrugated plates of the tank wall need to be strictly aligned in a circular manner in the vertical and horizontal directions with the corrugated plates of the corresponding sectors of the tank bottom and the corrugated plates of the opposite tank wall to ensure the integrity and tightness of the tank body structure. The precise installation of the corrugated plates depends on the positioning of the underlying insulation modules, and the installation of the insulation modules takes the baseline as the key reference. Once the baseline deviates, it will not only cause misalignment of the corrugated plate installation, damage the sealing system of the storage tank, increase the risk of liquefied natural gas leakage, but also may lead to stress concentration, affect the structural strength of the tank body, and reduce the service life and safety factor of the storage tank.

[0004] After retrieval, Chinese Patent Application CN115265503A discloses a scribing method for the baseline of a thin-film tank. This method establishes a theoretical model of the inner tank of the thin-film tank through POLYWORKS software, marks information on the inner tank of the already constructed thin-film tank, establishes an actual model of the inner tank of the thin-film tank by measuring the measuring points on the tank wall, fits the actual model and the theoretical model, scribes the baseline of the tank wall and the tank bottom of the thin-film tank, and finally inspects the baseline of the tank wall and the tank bottom.

[0005] However, the above technology relies on the POLYWORKS software to complete the fitting of the actual model and the theoretical model. When the fitting result does not meet the baseline inspection, it is necessary to re-measure and re-fit, which greatly affects the scribing efficiency. Summary of the Invention

[0006] The purpose of the present invention is to overcome the above-mentioned defects existing in the prior art and provide a vertical thin-film tank baseline scribing method, device, and medium with high baseline scribing efficiency and high precision.

[0007] The purpose of the present invention can be achieved through the following technical solutions: According to the first aspect of the present invention, a vertical thin-film tank baseline scribing method is provided, including: Place the laser level at the center of the bottom of the vertical film tank, and adjust the laser emitted vertically by the laser level to coincide with the initial tank wall angle line; Initially set a circle of corner points at the bottom and a circle of corner points at the top, and use the laser level to collect the corner point data; Establish a Cartesian coordinate system based on the collected corner point data, fix the coordinates of any one corner point at the bottom, and adjust the coordinates of the remaining corner points at the bottom by setting the constraint order; wherein, the set constraints include that the line connecting two adjacent corner points at the bottom is perpendicular to the line where the connection line between the marked point and the center of the circle is located, the cumulative offset of the adjacent tank wall midlines in the vertical angle bisector plane is less than the set threshold, and the distance between the center of the bottom of the tank and the connection line between the current wall marked point and the opposite wall marked point is less than the set threshold; Use the adjusted corner point coordinates to draw the reference line.

[0008] Preferably, the step of placing the laser level at the center of the bottom of the vertical film tank and adjusting the laser emitted vertically by the laser level to coincide with the initial tank wall angle line is specifically: taking the geometric center of the bottom surface of the vertical film tank as the center of the bottom of the tank, place the laser level so that the laser spot at the bottom of the laser level coincides with the center of the bottom of the tank, and adjust the laser emitted vertically by the laser level to coincide with the initial tank wall angle line.

[0009] Preferably, the initial setting of a circle of corner points at the bottom specifically includes: For each initial tank wall angle line, mark a first marked point and a second marked point at the first distance and the second distance upward from the bottom surface of the tank respectively, and connect the first marked point and the second marked point to obtain the wall angle line; For each wall angle line, mark two third marked points at the third distance upward from the bottom of the tank on the left and right walls respectively, and use the longitudinal intersection point of the connection line of the two third marked points on the corresponding wall angle line as the corner point; wherein, the value of the third distance is between the first distance and the second distance; Use the laser level to collect the corner point data of the bottom circle of the tank wall.

[0010] Preferably, the step of marking two third marked points at the third distance upward from the bottom of the tank on the left and right walls respectively for each wall angle line is specifically: for each wall angle line, use a right-angle mold, make one right-angle side fit the bottom surface of the tank, and the other right-angle side fit the left and right walls respectively, and mark two third marked points at the third distance upward from the bottom of the tank on the left and right walls respectively.

[0011] Preferably, the step of fixing the coordinates of any one corner point at the bottom and adjusting the coordinates of the remaining corner points at the bottom by setting the constraint order is specifically: For the M corner points in a circle at the bottom, fix the coordinate of any one corner point, denoted as P1, and sequentially label the other corner points at the bottom to obtain the corner point set {P1, P1, …, PM}; Taking the corner point P1 as the fixed point, if the set constraints are not satisfied, adjust the coordinate of the corner point P2 until the set constraints are satisfied. Otherwise, taking the corner point P2 as the fixed point, judge and adjust the coordinate of the corner point P3; Sequentially loop around in order for one week. If the adjustment satisfies the set constraints, output the adjusted corner point coordinates for subsequent baseline marking. Otherwise, interrupt and output an exception.

[0012] Preferably, the cumulative offset of the midlines of adjacent tank walls in the plane of the vertical angular bisector is less than a set threshold, specifically: Taking the vertical plane where the vertical angular bisector is emitted vertically by the laser level as the plane of the vertical angular bisector; Set the wall width , and according to the left - right offset angle of the current wall midline in the plane of the vertical angular bisector, calculate the offset distance of the horizontal midline of the wall as , and according to the left - right offset angle of the midline of the next adjacent wall in the plane of the vertical angular bisector, calculate the offset distance of the horizontal midline of the adjacent wall as ; When the left - right offset angles and are in the same direction, the offset cumulative constraint is: ; When the left - right offset angles and are not in the same direction, the offset cumulative constraint is: ; wherein, is the set threshold of the inclination tolerance of the horizontal axis.

[0013] Preferably, the distance between the center of the tank bottom and the line connecting the marked points on the current wall and the marked points on the opposite wall is less than a set threshold, specifically: the distance between the center of the tank bottom and the line connecting the marked points on the current wall and the marked points on the opposite wall is less than 1 mm.

[0014] Preferably, the inner wall of the vertical thin - film tank is randomly provided with frog - jump points to ensure the consistency of the installation position of the laser tracker.

[0015] According to the second aspect of the present invention, there is provided an electronic device, including a memory and a processor. A computer program is stored on the memory, and when the processor executes the program, the method according to any one of the above is implemented.

[0016] According to a third aspect of the present invention, a computer-readable storage medium is provided, on which a computer program is stored, and when the program is executed by a processor, any one of the methods described above is implemented.

[0017] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention does not need to establish a theoretical model in advance. It is directly based on actual measurement data and, according to the actual requirements of the project, takes the line connecting two adjacent corner points as perpendicular to the line connecting the mark point and the center of the circle, the cumulative offset of the center line of the adjacent tank wall in the vertical angle bisector plane is less than the set threshold, and the distance between the center of the tank bottom circle and the line connecting the current wall mark point and the opposite wall mark point is less than the set threshold as the constraint conditions. The corner point positions are adjusted quickly and accurately in sequence, and the baseline can be drawn according to the corner point settings, which is more efficient and reliable. Moreover, only one corner point coordinate needs to be adjusted for each constraint judgment, and the calculation amount for a single adjustment is smaller, which is more convenient for on-site operation.

[0018] (2) By marking two points at a set distance from the bottom of the tank, the wall angle line is obtained by connecting them. Then, two points are marked on the left and right walls at a set distance from the bottom of the tank. The longitudinal intersection of the connecting lines is used as the initial corner point. The points and lines are interconnected to build a plane constraint, and the on-site operation is precise and controllable.

[0019] (3) During the process of adjusting the corner coordinates, the adjacent wall centerline offset constraint is introduced. The sine function is used to map the centerline offset angle and the centerline offset amount, so that the offset of the wall centerline in the vertical angle bisector plane can be quickly calculated. At the same time, different offset cumulative expressions are selected according to the similarities and differences in the offset directions of adjacent walls. The adjacent wall constraints are applied sequentially to realize multi-level offset error transmission, thereby improving the accuracy of the overall adjustment of the corner coordinates.

[0020] (4) Under the constraints of adjacent walls, the current wall and opposite wall constraints are additionally introduced during the corner point coordinate adjustment process, ensuring the high reliability and accuracy of the overall corner point coordinate adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Flow chart of the method of the present invention.

[0022] Figure 2 Schematic diagram of the wall corner points.

[0023] Figure 3 This is a schematic diagram of the bottom angle line.

[0024] Figure 4 Schematic diagram for right-angle template placement.

[0025] Figure 5 Schematic diagram of corner point locations.

[0026] Figure 6 It is a schematic diagram of the layout position of the frog-jump points.

[0027] Figure 7 It is a schematic diagram of the laser tracker collecting the bottom corner points.

[0028] Figure 8 It is a schematic diagram of the position of the top marking points.

[0029] Figure 9 It is a schematic diagram of the position of the top corner points.

[0030] Figure 10 It is a schematic diagram of the calculation of the offset of the wall center line.

[0031] Figure 11 It is a partially enlarged schematic diagram of the calculation of the offset of the wall center line.

[0032] Figure 12 It is a schematic diagram of the marking of the included angle line points. Specific implementation manners

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0034] Embodiment As Figure 1 shown, this embodiment provides a method for scribing the reference line of a vertical thin-film tank, and the method includes: S1. Place the laser level at the center of the bottom of the vertical thin-film tank, and adjust the laser emitted vertically by the laser level to coincide with the initial included angle line of the tank wall; S2. Initially set a circle of bottom corner points and a circle of top corner points, and use the laser level to collect the corner point data; S3. Establish a Cartesian coordinate system according to the collected corner point data, fix the coordinates of any bottom corner point, and adjust the coordinates of the remaining bottom corner points by setting the constraint order; wherein, the set constraints include that the connection line between two adjacent bottom corner points is perpendicular to the straight line where the connection line between the marking point and the center of the circle is located, the cumulative offset of the adjacent tank wall center lines in the vertical angular bisector plane is less than the set threshold, and the distance between the center of the bottom of the tank and the connection line between the current wall marking point and the opposite wall marking point is less than the set threshold; S4. Use the adjusted corner point coordinates to scribe the reference line.

[0035] Next, the method of this embodiment will be introduced in detail.

[0036] First, the following are the explanations of the terms involved in this embodiment: The center of the circular bottom of the tank and the center of the top of the tank: The geometric center of the bottom of the tank is used as the center of the bottom of the tank, and the point at the height of the vertical distance from the center of the bottom of the tank to the top plane of the tank is used as the center of the top of the tank.

[0037] Markout point: Starting from the center of the bottom of the tank and the center of the top of the tank, perpendicular lines are drawn to the edges of the bottom and top surfaces of the storage tank at the angles of the angle bisectors of the regular polyhedron. The intersection points are called markout points (note: for regular polygons, the markout points coincide with the midpoints of the sides); The median line of the tank wall: The connection line of the markout points of the two upper and lower edges of a wall surface is called the median line of the tank wall.

[0038] S1. Place the laser level at the center of the bottom of the vertical thin-film tank, and adjust the laser emitted vertically by the laser level to coincide with the initial tank wall angle line.

[0039] Specifically, taking the geometric center of the bottom surface of the vertical thin-film tank as the center of the bottom of the tank, place the laser level so that the laser spot at the bottom of the laser level coincides with the center of the bottom of the tank, and adjust the laser emitted vertically by the laser level to coincide with the initial tank wall angle line.

[0040] S2. Initially set a circle of corner points at the bottom and a circle of corner points at the top, and use the laser level to collect the corner point data.

[0041] The initial setting of a circle of corner points at the bottom specifically includes: S201. Angle line marking: For each initial tank wall angle line, mark the first marking point and the second marking point at the first distance and the second distance upward from the bottom surface of the tank respectively, and connect the first marking point and the second marking point to obtain the wall surface angle line; In this embodiment, after adjusting the laser level instrument so that the laser emitted vertically coincides with the initial tank wall angle line, use a marker pen to draw 2 marking points at about 100 mm and 300 mm upward from the bottom of the tank, as Figure 2 shown. Use a chalk line to connect the upper and lower adjacent angle points, as Figure 3 shown. Similarly, complete all the angle lines at the bottom of the entire tank wall.

[0042] S202. Corner point marking: For each wall surface angle line, for each wall surface angle line, use a right-angle mold, as Figure 4 shown, attach one right-angle side to the bottom surface of the tank, and attach the other right-angle side to the left and right two wall surfaces respectively. Mark two third marking points at the third distance upward from the bottom of the tank on the left and right two wall surfaces respectively. Use a chalk line to mark the longitudinal intersection point of the connection line of the two third marking points on the corresponding wall surface angle line as the corner point, as Figure 5As shown, wherein the value of the third distance is between the first distance and the second distance. In this embodiment, the third distance ranges from 100 to 200 mm.

[0043] S203. Use a laser level to collect corner point data around the bottom of the tank wall.

[0044] In the same manner as for the tank wall bottom, mark corner points on each initial wall angle line at a set distance below the tank top plane.

[0045] In this embodiment, frog jump points are randomly set on the inner wall of the vertical film tank to ensure the consistency of the laser tracker installation position when the initial installation position of the laser tracker is offset or the error is corrected multiple times. Figure 6 The specific installation process of the frog jump point is as follows: first clean the installation target base, press the target base against the tank wall, and then use hot melt glue to apply glue around the target base to ensure that the target base is firmly attached.

[0046] In this embodiment, the laser tracker is mounted securely and placed around it with visible protective objects to prevent external impacts and displacement of the laser tracker during operation. The mounting method (magnetic or tripod support) is determined based on the actual site environment or location.

[0047] Use a laser level to collect corner point data, including: S211. Measure bottom data: Install the laser tracker on the bottom of the tank. One person holds the target base and the target ball and aligns them with the corner points. Use the laser tracker to collect a circle of corner points on the bottom of the tank wall. Figure 7 As shown, the data of a circle at the bottom of the tank is obtained and a Cartesian coordinate system is established.

[0048] S212, measure the top data: use the laser tracker and target ball to mark and measure the top position according to the design size, Figure 8 Use the ink fountain to connect the horizontal and vertical marking points, and generate an intersection point between each two adjacent faces, as shown in the figure below. Figure 9 shown.

[0049] S3. Establish a Cartesian coordinate system based on the collected corner point data, fix the coordinates of any corner point on the bottom, and adjust the coordinates of the remaining corner points on the bottom by setting a constraint sequence; wherein the set constraints include that the line connecting two adjacent corner points on the bottom is perpendicular to the center line of the tank wall, the cumulative offset of the center lines of adjacent tank walls in the vertical angle bisector plane is less than a set threshold, and the distance between the center point of the tank bottom and the line connecting the current wall mark point and the opposite wall mark point is less than a set threshold.

[0050] The adjustment process logic is as follows: 1) For the M corner points in a circle at the bottom, fix the coordinate of any one corner point, denoted as P1, and sequentially label the other corner points at the bottom to obtain the set of corner points {P1, P1, …, PM}; 2) Taking the corner point P1 as the fixed point, if the set constraints are not satisfied, adjust the coordinate of the corner point P2 until the set constraints are met; otherwise, take the corner point P2 as the fixed point and judge and adjust the coordinate of the corner point P3; 3) Sequentially cycle around in order. If the adjustment meets the set constraints, output the adjusted corner point coordinates for subsequent reference line marking; otherwise, interrupt and output an exception.

[0051] The set constraints in the adjustment process include: Constraint 1: The connection line between two adjacent corner points at the bottom (the bottom edge of the tank wall) is perpendicular to the middle line of the tank wall.

[0052] Constraint 2: The cumulative offset of adjacent tank wall middle lines in the vertical angular bisector plane is less than the set threshold: Taking the vertical plane where the vertical angular bisector is emitted vertically by the laser level as the vertical angular bisector plane; As Figure 10 and Figure 11 shown, set the wall width , according to the left - right offset angle of the current wall middle line in the vertical angular bisector plane, calculate the offset distance of the wall horizontal middle line as , according to the left - right offset angle of the next adjacent wall middle line in the vertical angular bisector plane as , calculate the offset distance of the adjacent wall horizontal middle line as ; when the left - right offset angles and are in the same direction, the offset cumulative constraint is: ; when the left - right offset angles and are not in the same direction, the offset cumulative constraint is: ; where is the set horizontal axis tilt tolerance threshold. In the embodiment, the horizontal axis tilt tolerance threshold is set to 4 mm. Figure 11 In

[0053] Constraint 3: The distance between the center of the tank bottom and the connection line of the current wall marking point and the opposite wall marking point is less than the set threshold. In this embodiment, the threshold is 1 mm.

[0054] S4. According to the adjusted corner point coordinates, obtain the new tank wall corner points, tank wall corner lines and tank wall middle lines, and conduct reference line marking.

[0055] Specifically, the newly calculated corner points are marked in the coordinate positions in the form of points, and the distance between two points is about 2 meters. As Figure 12 shown, the included angle line is made, and all points are longitudinally connected in sequence using an ink fountain to form the final wall surface included angle line. During adjustment, the sharp corner of the right-angle mold is aligned with this line.

[0056] The electronic device of the present invention includes a central processing unit (CPU), which can execute various appropriate actions and processes according to computer program instructions stored in a read-only memory (ROM) or computer program instructions loaded from a storage unit into a random access memory (RAM). In the RAM, various programs and data required for device operation can also be stored. The CPU, ROM, and RAM are connected to each other through a bus. An input / output (I / O) interface is also connected to the bus.

[0057] Multiple components in the device are connected to the I / O interface, including: an input unit, such as a keyboard, a mouse, etc.; an output unit, such as various types of displays, speakers, etc.; a storage unit, such as a magnetic disk, an optical disc, etc.; and a communication unit, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit allows the device to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0058] The processing unit executes the various methods and processes described above, such as methods S1~S3. For example, in some embodiments, methods S1~S3 can be implemented as a computer software program, which is tangibly contained in a machine-readable medium, such as a storage unit. In some embodiments, part or all of the computer program can be loaded and / or installed onto the device via the ROM and / or the communication unit. When the computer program is loaded into the RAM and executed by the CPU, one or more steps of methods S1~S3 described above can be executed. Alternatively, in other embodiments, the CPU can be configured to execute methods S1~S3 by any other suitable means (e.g., by means of firmware).

[0059] The functions described above herein can be at least partially executed by one or more hardware logic components. For example, without limitation, exemplary types of hardware logic components that can be used include: field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on a chip (SOCs), complex programmable logic devices (CPLDs), and so on.

[0060] The program code for implementing the method of the present invention can be written in any combination of one or more programming languages. These program codes can be provided to a processor or controller of a general-purpose computer, a special-purpose computer, or other programmable data processing devices, such that when the program codes are executed by the processor or controller, the functions / operations specified in the flowchart and / or block diagram are implemented. The program codes can be executed entirely on the machine, partially on the machine, executed partially on the machine and partially on a remote machine as an independent software package, or executed entirely on a remote machine or server.

[0061] In the context of the present invention, a machine-readable medium can be a tangible medium that can contain or store a program for use by or in connection with an instruction execution system, apparatus, or device. A machine-readable medium can be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium can include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatuses, or devices, or any suitable combination of the foregoing. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0062] As described above, only the specific embodiments of the present invention are provided, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method for marking the reference line of a vertical film tank, characterized in that, Including: Place the laser level at the center of the bottom of the vertical film tank, and adjust the laser emitted vertically by the laser level to coincide with the initial tank wall included angle line; Initially set a circle of corner points at the bottom and a circle of corner points at the top, and use the laser level to collect the corner point data; Establish a Cartesian coordinate system according to the collected corner point data, fix the coordinates of any one corner point at the bottom, and adjust the coordinates of the remaining corner points at the bottom by setting the constraint order; wherein, the set constraints include that the connection line between two adjacent corner points at the bottom is perpendicular to the straight line where the connection line between the marked point and the center of the circle is located, the cumulative offset of the middle lines of adjacent tank walls in the vertical angular bisector plane is less than the set threshold, and the distance between the center of the bottom of the tank and the connection line between the current wall marked point and the opposite wall marked point is less than the set threshold; Use the adjusted corner point coordinates to draw the reference line.

2. The vertical film tank baseline scribing method according to claim 1, characterized in that, The step of placing the laser level at the center of the bottom of the vertical film tank and adjusting the laser emitted vertically by the laser level to coincide with the initial tank wall included angle line is specifically: taking the geometric center of the bottom surface of the vertical film tank as the center of the bottom of the tank, place the laser level so that the laser spot at the bottom of the laser level coincides with the center of the bottom of the tank, and adjust the laser emitted vertically by the laser level to coincide with the initial tank wall included angle line.

3. A method for marking the reference line of a vertical film tank according to claim 1, characterized in that The initial setting of a circle of corner points at the bottom specifically includes: For each initial tank wall included angle line, mark a first marked point and a second marked point at the first distance and the second distance upward from the bottom surface of the tank respectively, and connect the first marked point and the second marked point to obtain the wall included angle line; For each wall included angle line, mark two third marked points at the third distance upward from the bottom of the tank on the left and right walls respectively, and use the longitudinal intersection point of the connection line of the two third marked points on the corresponding wall included angle line as the corner point; wherein, the value of the third distance is between the first distance and the second distance; Use the laser level to collect the corner point data of a circle at the bottom of the tank wall.

4. A vertical film tank reference line marking method according to claim 3, characterized in that The step of marking two third marked points at the third distance upward from the bottom of the tank on the left and right walls respectively for each wall included angle line is specifically: for each wall included angle line, use a right-angle mold, make one right-angle side fit the bottom surface of the tank, and the other right-angle side fit the left and right walls respectively, and mark two third marked points at the third distance upward from the bottom of the tank on the left and right walls respectively.

5. A method for marking a reference line of a vertical film tank according to claim 1, characterized in that The step of fixing the coordinates of any one corner point at the bottom and adjusting the coordinates of the remaining corner points at the bottom by setting the constraint order is specifically: For M corner points in a circle at the bottom, fix the coordinates of any one corner point, denoted as P1, and sequentially label the other corner points at the bottom to obtain the corner point set {P1, P1, …, PM}; Taking the corner point P1 as the fixed point, if the set constraints are not satisfied, adjust the coordinates of the corner point P2 until the set constraints are satisfied, otherwise take the corner point P2 as the fixed point and judge and adjust the coordinates of the corner point P3; Sequentially cycle around once. If the adjustment satisfies the set constraints, output the adjusted corner point coordinates for subsequent reference line drawing, otherwise interrupt and output abnormally.

6. A vertical film tank baseline scribing method according to claim 1, characterized in that, The cumulative offset of the middle lines of adjacent tank walls in the vertical angular bisector plane is less than the set threshold, specifically: Taking the vertical plane where the vertical angular bisector emitted vertically by the laser level is located as the vertical angular bisector plane; Set the wall width , according to the left - right offset angle of the current wall center line on the vertical angular bisector plane , calculate that the offset distance of the wall horizontal center line is , according to the left - right offset angle of the next adjacent wall center line on the vertical angular bisector plane is , calculate that the offset distance of the adjacent wall horizontal center line is ; When the left and right offset angles and are in the same direction, the cumulative offset constraint is: ; When the left and right offset angles and are not in the same direction, the offset cumulative constraint is: ; Among them, is the set horizontal axis tilt tolerance threshold value.

7. A method for marking a reference line of a vertical film tank according to claim 1, characterized in that, The distance from the center of the tank bottom to the line connecting the current wall marking point and the opposite wall marking point is less than the set threshold, specifically: the distance from the center of the tank bottom to the line connecting the current wall marking point and the opposite wall marking point is less than 1 mm.

8. A method for scribing a reference line of a vertical film tank according to claim 1, characterized in that, Frog-jump points are randomly set on the inner wall of the vertical thin-film tank to ensure the consistency of the installation position of the laser tracker.

9. An electronic device, comprising a memory and a processor, wherein a computer program is stored on the memory, characterized in that, When the processor executes the program, it implements the method according to any one of claims 1 to 8.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the method according to any one of claims 1 to 8.

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