A Measuring Method and Device for the Ovality of a Water Conveying Pipeline

Abstract

The present invention provides a method and device for measuring the ovality of a water conveyance pipeline, belonging to the technical field of ovality measurement. It is relatively simple and has high measurement accuracy, and can better reflect the bending degree of the water conveyance pipeline, thereby better realizing the measurement of the performance of the water conveyance pipeline. This method determines at least three intersection points of the rays and the inner wall of the water conveyance pipeline through the ray lengths and vertical angles of at least three emitted rays, and then determines the major axis and minor axis of the cross-section of the water conveyance pipeline by using the above intersection points, and calculates the ovality of the water conveyance pipeline according to the major axis and minor axis.

Description

Technical Field

[0001] The present invention relates to the technical field of water conveyance pipeline measurement, and particularly to a method and device for measuring the ovality of a water conveyance pipeline. Background Art

[0002] A water conveyance pipeline is a pipeline buried underground for conveying water resources from a water source to a water usage area, and it plays an important role in many technical fields such as long-distance water conveyance, urban water supply, agricultural irrigation, industrial water use, and emergency water supply.

[0003] The ovality of a water conveyance pipeline, as an important geometric characteristic of the water conveyance pipeline, is used to describe the deviation degree between the center line of the water conveyance pipeline and the true center of the circle. By measuring the ovality of the water conveyance pipeline, the bending degree of the water conveyance pipeline can be reflected, so as to realize the measurement of the performance of the water conveyance pipeline (such as fluid conveyance efficiency). However, the existing methods for measuring the ovality of water conveyance pipelines are relatively complex and the measurement accuracy is not high, so that the measured ovality of the water conveyance pipeline cannot well reflect the bending degree of the water conveyance pipeline, and thus the measurement of the performance of the water conveyance pipeline cannot be well realized. Summary of the Invention

[0004] The present invention provides a method and device for measuring the ovality of a water conveyance pipeline. By emitting at least three rays to the inner wall of the water conveyance pipeline to solve the ovality of the water conveyance pipeline, it is relatively simple and has high measurement accuracy, can well reflect the bending degree of the water conveyance pipeline, and thus can well realize the measurement of the performance of the water conveyance pipeline.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] In a first aspect, the present invention provides a method for measuring the ovality of a water conveyance pipeline, including:

[0007] Emitting at least three rays to the inner wall of the water conveyance pipeline, and determining the ray length and vertical angle of each ray among the at least three rays; wherein, the at least three rays are emitted from the same position, the ray length is the distance between the intersection points of the ray and the inner wall of the water conveyance pipeline, and the vertical angle is the angle between the ray and the vertical direction along the clockwise direction.

[0008] Determining the intersection points of each ray among the at least three rays and the inner wall of the water conveyance pipeline according to the ray length and vertical angle of each ray among the at least three rays.

[0009] Substituting the intersection points of each ray among the at least three rays and the inner wall of the water conveyance pipeline and the vertical angle into the ellipse equation of the cross-section of the water conveyance pipeline to determine the major axis and minor axis of the cross-section of the water conveyance pipeline.

[0010] Determining the ovality of the water conveyance pipeline based on the major axis length and minor axis length of the cross-section of the water conveyance pipeline.

[0011] The method for measuring the ovality of the water conveyance pipeline provided by the present invention is relatively simple and can simulate the cross-section of the water conveyance pipeline through an ideal ellipse, so that the measurement accuracy is relatively high, and thus the bending degree of the water conveyance pipeline can be better reflected, and further the performance measurement of the water conveyance pipeline can be better realized.

[0012] In one implementation manner of the first aspect, the intersection point of each of at least three rays and the inner wall of the water conveyance pipeline satisfies: p i (x0 + h i sinα i , y0 + h i cosα i )

[0013] where p i represents the intersection point of the i-th ray among at least three rays and the inner wall of the water conveyance pipeline, x0 represents the coordinate on the x-axis of the coordinate system established on the inner wall of the water conveyance pipeline at the emission position of the emission point of at least three rays, h i represents the ray length of the i-th ray among at least three rays, α i represents the vertical angle of the i-th ray among at least three rays, and y0 represents the coordinate on the y-axis of the coordinate system established on the inner wall of the water conveyance pipeline at the emission position of the emission point of at least three rays.

[0014] In one implementation manner of the first aspect, the ellipse equation of the cross-section of the water conveyance pipeline satisfies:

[0015]

[0016] where x0 represents the coordinate on the x-axis of the coordinate system established on the inner wall of the water conveyance pipeline at the emission position of the emission point of at least three rays, h i represents the ray length of the i-th ray among at least three rays, α i represents the vertical angle of the i-th ray among at least three rays, a represents the length of the major axis of the cross-section of the water conveyance pipeline, y0 represents the coordinate on the y-axis of the coordinate system established on the inner wall of the water conveyance pipeline at the emission position of the emission point of at least three rays, and b represents the length of the minor axis of the cross-section of the water conveyance pipeline.

[0017] In one implementation manner of the first aspect, determining the ray length and the vertical angle of each of at least three rays includes:

[0018] After the infrared emission tube is made vertical by a spirit level, after the infrared emission tube determines the vertical angles of at least three rays, it emits at least three rays to the inner wall of the water conveyance pipeline; wherein, the infrared emission tube is vertically arranged on a tripod with a spirit level.

[0019] For each of at least three rays, the product of half of the time required for the ray to travel from the emission position to the return to the starting position and the speed of light is taken as the ray length of the ray.

[0020] In an implementation manner of the first aspect, the ovality of the water conveyance pipeline satisfies:

[0021]

[0022] Where Δ represents the ovality of the water conveyance pipeline, a represents the length of the major axis of the cross-section of the water conveyance pipeline, and b represents the length of the minor axis of the cross-section of the water conveyance pipeline.

[0023] In an implementation manner of the first aspect, the measurement method measures the ovality of the water conveyance pipeline through a pipeline measurement device, and the pipeline measurement device includes a ray distance measuring instrument.

[0024] In an implementation manner of the first aspect, the pipeline measurement device further includes a tripod for arranging the ray distance measuring instrument inside the water conveyance pipeline, and a display screen connected to the pipeline measurement device, and the display screen is used to display the measurement result of the ray distance measuring instrument on the ground.

[0025] In the second aspect, the present invention provides a measurement device for the ovality of a water conveyance pipeline, including a first determination module, a third determination module, and a fourth determination module;

[0026] The first determination module is configured to emit at least three rays towards the inner wall of the water conveyance pipeline, and determine the ray length and the vertical angle of each of the at least three rays; wherein, the at least three rays are emitted from the same position, the ray length is the distance between the intersection points of the ray and the inner wall of the water conveyance pipeline, and the vertical angle is the angle between the ray and the vertical direction.

[0027] The second determination module is configured to determine the intersection points of each of the at least three rays with the inner wall of the water conveyance pipeline according to the ray length and the vertical angle of each of the at least three rays.

[0028] The third determination module is configured to substitute the intersection points of each of the at least three rays with the inner wall of the water conveyance pipeline and the vertical angle into the elliptical equation of the cross-section of the water conveyance pipeline to determine the major axis and the minor axis of the cross-section of the water conveyance pipeline.

[0029] The fourth determination module is configured to determine the ovality of the water conveyance pipeline based on the length of the major axis and the length of the minor axis of the cross-section of the water conveyance pipeline.

[0030] In an implementation manner of the second aspect, the first determination module is specifically configured to, for each of the at least three rays, take the product of half of the time required for the ray to travel from the emission position to the return to the starting position and the speed of light as the ray length of the ray.

[0031] In a third aspect, the present invention provides an electronic device, including a processor and a memory coupled to the processor; the memory is used to store computer instructions, and when the electronic device runs, the processor executes the computer instructions stored in the memory, so that the electronic device executes the method in the first aspect or any one of its implementation manners as described above.

[0032] In a fourth aspect, the present invention provides a computer-readable storage medium, including computer program instructions, and when the computer program instructions are executed by a computer, the computer is caused to execute the method described in the first aspect or any one of its implementation manners as described above.

[0033] In a fifth aspect, the present invention provides a computer program product, including computer program instructions, and when the computer program instructions run on a computer, the computer is caused to execute the method described in the first aspect or any one of its implementation manners as described above.

[0034] For the technical effects corresponding to the second to fifth aspects and their possible implementation manners as described above, reference may be made to the description of the technical effects of the first aspect and its possible implementation manners as described above, and details are not elaborated herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a schematic cross-sectional view of an undeformed water conveyance pipeline provided by an embodiment of the present application;

[0036] Figure 2 is a schematic cross-sectional view of a deformed water conveyance pipeline provided by an embodiment of the present application;

[0037] Figure 3 is one of the schematic diagrams of a method for measuring the ovality of a water conveyance pipeline provided by an embodiment of the present application;

[0038] Figure 4 is another schematic diagram of a method for measuring the ovality of a water conveyance pipeline provided by an embodiment of the present application;

[0039] Figure 5 is a schematic diagram of the relationship between the vertical angle of a ray and the coordinates of the intersection point of the ray and the inner wall of the water conveyance pipeline provided by an embodiment of the present application;

[0040] Figure 6 is one of the schematic diagrams of the relationship between the intersection points of a ray and the inner wall of the water conveyance pipeline provided by an embodiment of the present application;

[0041] Figure 7 is a schematic diagram of a method for determining the emission position provided by an embodiment of the present application;

[0042] Figure 8 is another schematic diagram of the relationship between the intersection points of a ray and the inner wall of the water conveyance pipeline provided by an embodiment of the present application;

[0043] Figure 9 It is one of the schematic structural diagrams of a measuring device for the ovality of a water conveyance pipeline provided by an embodiment of the present application. Specific embodiments

[0044] If terms such as "first" and "second" are used in the description and claims of the present invention, they are used to distinguish different objects rather than to describe a specific order of the objects.

[0045] "And / or" in the embodiments of the present application represents the relationship between objects. For example, A and / or B can represent the following three situations: A exists alone, B exists alone, and both A and B exist simultaneously.

[0046] In the embodiments of the present application, words such as "exemplary" or "for example" are used to represent examples, illustrations, or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of the present application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "exemplary" or "for example" is intended to present relevant concepts in a specific manner.

[0047] In the description of the present invention, unless otherwise specified, "at least three" means four or more. For example, at least three rays means three or more rays.

[0048] The method and device provided by the embodiments of the present application relate to ovality measurement and can be used to measure the ovality of a water conveyance pipeline. Specifically, the ovality of a water conveyance pipeline buried underground is measured by emitting rays.

[0049] It can be understood that after the water conveyance pipeline is buried underground, it will be subjected to the pressure generated by the soil layer above it and the buildings on the soil layer, causing the water conveyance pipeline to deform, resulting in the concentration of internal stress (the distribution of internal force per unit area due to external force or internal inhomogeneity within an object) within the water conveyance pipeline, thereby increasing the risk of pipeline rupture. In order to ensure the efficiency and safety of the water conveyance pipeline, it is necessary to detect the ovality of the water conveyance pipeline throughout the process from production, installation to maintenance.

[0050] Exemplarily, Figure 1 shows a cross-section of an undeformed water conveyance pipeline, Figure 2 shows a cross-section of a deformed water conveyance pipeline, from Figure 1 and Figure 2 it can be seen that the cross-section of the undeformed water conveyance pipeline is close to a perfect circle, while the cross-section of the deformed water conveyance pipeline is an ellipse. That is to say, the more severe the deformation, the greater the ovality.

[0051] To solve the problem that the existing measurement method for the ovality of a water conveyance pipeline in the background technology is relatively complex and the measurement accuracy is not high, resulting in the ovality of the measured water conveyance pipeline being unable to well reflect the bending degree of the water conveyance pipeline, and thus unable to well measure the performance of the water conveyance pipeline, the embodiments of the present application provide a method and device for measuring the ovality of a water conveyance pipeline. By the ray lengths and vertical angles of at least three emitted rays, the intersections of at least three rays with the inner wall of the water conveyance pipeline are determined, and then the major axis and minor axis of the cross-section of the water conveyance pipeline are determined using the above intersections, and the ovality of the water conveyance pipeline is calculated based on the major axis and minor axis. The above process is relatively simple and can simulate the cross-section of the water conveyance pipeline with an ideal ellipse, resulting in a relatively high measurement accuracy, so that the bending degree of the water conveyance pipeline can be well reflected, and thus the performance of the water conveyance pipeline can be well measured.

[0052] Exemplarily, the method for measuring the ovality of a water conveyance pipeline provided by the embodiments of the present invention can be executed by an electronic device with processing capabilities. For example, the electronic device can be a computer, a server, etc. Taking the electronic device as a computer as an example, the hardware part of the computer can include: a processor, a memory, a network interface, a user interface, a communication bus, etc.

[0053] Among them, the processor is used to control the electronic device to execute relevant processing and calculation tasks. For example, it is used to determine the ray length, vertical angle, the intersection of the ray and the inner wall of the water conveyance pipeline, the major axis and minor axis of the cross-section of the water conveyance pipeline, and the ovality of the water conveyance pipeline, etc. The processor can include a central processing unit (CPU) or other processors. The processor can be single-core or multi-core. For example, the processor can include multiple CPUs.

[0054] The memory is used to store computer instructions and related data. For example, it is used to store the ray length, vertical angle, the intersection of the ray and the inner wall of the water conveyance pipeline, the major axis and minor axis of the cross-section of the water conveyance pipeline, and the ovality of the water conveyance pipeline, etc. The memory can be a random access memory (RAM), a read only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, or an optical memory, a magnetic disk storage medium, or any other magnetic storage device, or any other medium capable of storing program code or data that can be accessed by a computer. Optionally, the memory can be integrated in the processor, and the memory can also be independent of the processor.

[0055] The network interface is used for a computer to communicate with other devices or a communication network. The network interface can be a transceiver with sending and receiving functions. Optionally, the network interface can include standard wired interfaces, wireless interfaces (such as WI-FI interfaces, Bluetooth interfaces, 5G interfaces).

[0056] The communication bus is used to realize the connection and communication between various different components. For example, the above-mentioned processor, memory, network interface, and user interface can be interconnected through the communication bus.

[0057] The user interface can include a display screen and an input unit (such as a keyboard). Optionally, the user interface can also include standard wired interfaces and wireless interfaces.

[0058] Those skilled in the art can understand that the above computer may further include more or fewer components, or combine certain components, or have different component arrangements, and the embodiments of the present application do not limit this.

[0059] Exemplarily, the method for measuring the ovality of a water conveyance pipeline provided by the embodiments of the present application measures the ovality of the water conveyance pipeline through a pipeline measuring device. The pipeline measuring device includes a ray distance measuring instrument. Optionally, the pipeline measuring device further includes a tripod for arranging the ray distance measuring instrument inside the water conveyance pipeline, and a display screen connected to the pipeline measuring device. The above display screen is used to display the measurement results of the ray distance measuring instrument on the ground. Since the ray distance measuring instrument, the tripod, and the display screen are common devices in the art, the structures of the above three devices will not be described in detail.

[0060] Specifically, as Figure 3 shown, the above measurement method includes S101 - S104.

[0061] S101: Emit at least three rays to the inner wall of the water conveyance pipeline, and determine the ray length and the vertical angle of each ray among the at least three rays.

[0062] Among them, the at least three rays are emitted from the same position. The ray length is the distance between the intersection points of the ray and the inner wall of the water conveyance pipeline, and the vertical angle is the angle between the ray and the vertical direction in the clockwise direction. In the embodiments of the present application, at least three rays are emitted through the pipeline measuring device, and the ray length and the vertical angle of each ray among the at least three rays are determined through the pipeline measuring device.

[0063] Optionally, in combination with Figure 3 , as Figure 4 shown, S101 includes S1011 - S1012.

[0064] S1011. After making the infrared emission tube vertical with a spirit level, the infrared emission tube determines the vertical angles of at least three rays and then emits at least three rays towards the inner wall of the water conveyance pipeline. Among them, the infrared emission tube is vertically arranged on a tripod with a spirit level.

[0065] It can be understood that by adjusting the position of the tripod placed in the water conveyance pipeline with a spirit level, the plane of the tripod for fixing the infrared emission tube is made horizontal, and thus the infrared emission tube is made vertical. As is well known, since the infrared emission tube can emit at a fixed angle, the infrared emission tube can directly set the vertical angles of at least three rays, thereby realizing the determination of the vertical angles.

[0066] S1012. For each of the at least three rays, the product of half of the time required for the ray to travel from the emission position to the return position and the speed of light is taken as the ray length of the ray.

[0067] It can be understood that when the ray travels from emission to reflection back to its emission position, the length traversed by the ray is twice the length from the emission position to the inner wall of the water conveyance pipeline. Therefore, the product of half of the time required for the ray to travel from the emission position to the return position and the speed of light is the length from the emission position to the inner wall of the water conveyance pipeline, that is, the ray length of the ray defined in the embodiments of the present application.

[0068] S102. According to the ray length and the vertical angle of each of the at least three rays, the intersection points of each of the at least three rays with the inner wall of the water conveyance pipeline are determined.

[0069] The intersection points of each of the at least three rays with the inner wall of the water conveyance pipeline satisfy:

[0070] p i (x0 + h i sinα i , y0 + h i cosα i )

[0071] Among them, p i represents the intersection point of the i-th ray among the at least three rays with the inner wall of the water conveyance pipeline, x0 represents the coordinate on the x-axis of the coordinate system established on the inner wall of the water conveyance pipeline at the emission position of the emission point of the at least three rays, h i represents the ray length of the i-th ray among the at least three rays, α i represents the vertical angle of the i-th ray among the at least three rays, and y0 represents the coordinate on the y-axis of the coordinate system established on the inner wall of the water conveyance pipeline at the emission position of the emission point of the at least three rays.

[0072] Reference Figure 5 , Figure 5Shown is the relationship between the vertical angle of a ray and the coordinates of the intersection point of the ray with the inner wall of the water conveyance pipeline in a two-dimensional elliptical coordinate system. Among them, the origin O of this elliptical coordinate system is located at the center position of the cross-section of the water conveyance pipeline, the long axis of the water conveyance pipeline is the x-axis, and the short axis of the water conveyance pipeline is the y-axis. Figure 5 Four rays are shown. The black dots on each ray correspond to the emission positions of the rays. The emission position coordinates of ray 1 are (x1, y1), the ray length is h1, and the vertical angle is c1; the emission position coordinates of ray 2 are (x2, y2), the ray length is h2, and the vertical angle is c2; the emission position coordinates of ray 3 are (x3, y3), the ray length is h3, and the vertical angle is c3; the emission position coordinates of ray 4 are (x4, y4); the hollow dots on each ray correspond to the intersection points of the rays with the inner wall of the conveying pipeline. The ray lengths are h4, and the vertical angles are c4.

[0073] Continue to refer to Figure 5 , when the vertical angle of ray 1 is within the range of [0, 90°), the coordinates of the intersection point of ray 1 with the inner wall of the water conveyance pipeline satisfy (x1 + h1 sin c1, y1 + h1 cos c1); when the vertical angle of ray 2 is within the range of [90°, 180°), the coordinates of the intersection point of ray 2 with the inner wall of the water conveyance pipeline satisfy (x2 + h2 sin c2, y2 + h2 cos c2); when the vertical angle of ray 3 is within the range of [180°, 270°), the coordinates of the intersection point of ray 3 with the inner wall of the water conveyance pipeline satisfy (x3 + h3 sin c3, y3 + h3 cos c3); when the vertical angle of ray 4 is within the range of [270°, 360°], the coordinates of the intersection point of ray 4 with the inner wall of the water conveyance pipeline satisfy (x4 + h4 sin c4, y4 + h4 cos c4). It can be seen that the above formulas satisfy the conversion relationship between the vertical angle of the ray and the coordinates of the intersection point of the ray with the inner wall of the water conveyance pipeline within the range of [0, 360°].

[0074] In one implementation, four rays are emitted towards the inner wall of the water conveyance pipeline. As Figure 6 shown, in a two-dimensional elliptical coordinate system, assume the emission position of the ray is O', and the coordinates of O' in the elliptical coordinate system are (x0, y0).

[0075] Among the four emitted rays, the ray length of the first ray is h1, the vertical angle of the first ray is α1, and the coordinates of the intersection point of the first ray with the inner wall of the water conveyance pipeline in the elliptical coordinate system are: p1(x0 + h1 sin α1, y0 + h1 cos α1);

[0076] The ray length of the second ray is h2, the vertical angle of the second ray is α2, and the coordinates of the intersection point of the second ray and the inner wall of the water conveyance pipeline in the elliptical coordinate system are: p2(x0 + h2sinα2, y0 + h2cosα2);

[0077] The ray length of the third ray is h3, the vertical angle of the third ray is α3, and the coordinates of the intersection point of the third ray and the inner wall of the water conveyance pipeline in the elliptical coordinate system are: p3(x0 + h3sinα3, y0 + h3cosα3);

[0078] The ray length of the fourth ray is h4, the vertical angle of the fourth ray is α4, and the coordinates of the intersection point of the fourth ray and the inner wall of the water conveyance pipeline in the elliptical coordinate system are: p4(x0 + h4sinα4, y0 + h4cosα4);

[0079] Among them, x0 and y0 are unknowns, and h1, h2, h3, h4, α1, α2, α3, and α4 are known quantities.

[0080] In another implementation, three rays are emitted to the inner wall of the water conveyance pipeline. As Figure 7 shown, in the above elliptical coordinate system, assume the emission position of the ray is O’, and the coordinates of O’ in the elliptical coordinate system are (x0, y0).

[0081] Before emitting the three rays to the inner wall of the water conveyance pipeline, by emitting another three rays, the emission position of the ray is located directly below the central position of the cross-section of the water conveyance pipeline. The specific process is as follows:

[0082] Set the emission position of the ray (i.e., the ray distance measuring instrument) at any position m0 inside the water conveyance pipeline. First, emit a first ray vertically downward from the emission position, and then emit two second rays from the left and right sides of the emission position in the horizontal direction (the angle with the first ray is 90°). The intersection points of the two second rays and the inner wall of the water conveyance pipeline are m1 and m2 respectively. Measure the distance of m0m1 as s1 and the distance of m0m2 as s2. That is directly below the central position of the cross-section of the water conveyance pipeline, then set the emission position at Denoted as O’, and the coordinates of O’ in the elliptical coordinate system are (0, y0).

[0083] On this basis, as Figure 8 shown, among the three rays emitted from the emission position O’, the ray length of the first ray is h1, the vertical angle of the first ray is α1, and the coordinates of the intersection point of the first ray and the inner wall of the water conveyance pipeline in the elliptical coordinate system are: p1(h1sinα1, y0 + h1cosα1);

[0084] The ray length of the second ray is h2, the vertical angle of the second ray is α2, and the coordinates of the intersection point of the second ray and the inner wall of the water conveyance pipeline in the elliptic coordinate system are: p2(h2sinα2, y0 + h2cosα2);

[0085] The ray length of the third ray is h3, the vertical angle of the third ray is α3, and the coordinates of the intersection point of the third ray and the inner wall of the water conveyance pipeline in the elliptic coordinate system are: p3(h3sinα3, y0 + h3cosα3);

[0086] Among them, y0 is an unknown quantity, and h1, h2, h3, α1, α2, and α3 are known quantities.

[0087] S103. Substitute the intersection points of each ray in at least three rays and the inner wall of the water conveyance pipeline and the vertical angles into the elliptic equation of the cross-section of the water conveyance pipeline to determine the major axis and minor axis of the cross-section of the water conveyance pipeline.

[0088] The elliptic equation of the cross-section of the water conveyance pipeline satisfies:

[0089]

[0090] Among them, x0 represents the coordinate on the x-axis of the coordinate system established on the inner wall of the water conveyance pipeline at the emission position of the emission points of at least three rays, h i represents the ray length of the i-th ray among at least three rays, α i represents the vertical angle of the i-th ray among at least three rays, a represents the length of the major axis of the cross-section of the water conveyance pipeline, y0 represents the coordinate on the y-axis of the coordinate system established on the inner wall of the water conveyance pipeline at the emission position of the emission points of at least three rays, and b represents the length of the minor axis of the cross-section of the water conveyance pipeline.

[0091] In one implementation, four rays are emitted to the inner wall of the water conveyance pipeline. The coordinates of the intersection points of the four rays and the inner wall of the water conveyance pipeline in the elliptic coordinate system are p1(x0 + h1sinα1, y0 + h1cosα1), p2(x0 + h2sinα2, y0 + h2cosα2), p3(x0 + h3sinα3, y0 + h3cosα3), and p4(x0 + h4sinα4, y0 + h4cosα4). After substituting them into the above elliptic equation of the cross-section of the water conveyance pipeline, we get:

[0092]

[0093] Among them, a, b, x0, and y0 are four unknown quantities, and a, b, x0, and y0 can be obtained through the above four equations.

[0094] In another implementation, three rays are emitted towards the inner wall of the water conveyance pipeline. The coordinates of the intersection points of the four rays with the inner wall of the water conveyance pipeline in the elliptical coordinate system are p1(h1 sinα1, y0 + h1 cosα1), p2(h2sinα2, y0 + h2cosα2), and p3(h3sinα3, y0 + h3cosα3). After substituting them into the elliptical equation of the cross-section of the water conveyance pipeline, we get:

[0095]

[0096] Among them, a, b, and y0 are three unknowns, and a, b, and y0 can be obtained through the above three equations.

[0097] S104. Determine the ovality of the water conveyance pipeline based on the major axis length and minor axis length of the cross-section of the water conveyance pipeline.

[0098] In the embodiment of the present application, the ovality of the water conveyance pipeline satisfies:

[0099]

[0100] Among them, Δ represents the ovality of the water conveyance pipeline, a represents the major axis length of the cross-section of the water conveyance pipeline, and b represents the minor axis length of the cross-section of the water conveyance pipeline.

[0101] Correspondingly, the embodiment of the present application provides a measuring device for the ovality of a water conveyance pipeline, as Figure 9 shown, including a first determination module 501, a second determination module 502, a third determination module 503, and a fourth determination module 504.

[0102] Among them, the first determination module 501 is configured to emit at least three rays towards the inner wall of the water conveyance pipeline, and determine the ray length and vertical angle of each ray among the at least three rays; wherein, the at least three rays are emitted from the same position, the ray length is the distance between the intersection points of the ray and the inner wall of the water conveyance pipeline, and the vertical angle is the angle between the ray and the vertical direction. For example, the first determination module 501 is used to implement S101 of the above method for measuring the ovality of the water conveyance pipeline.

[0103] The second determination module 502 is configured to determine the intersection point of each ray among the at least three rays with the inner wall of the water conveyance pipeline according to the ray length and vertical angle of each ray among the at least three rays. For example, the second determination module 502 is used to implement S102 of the above method for measuring the ovality of the water conveyance pipeline.

[0104] The third determination module 503 is configured to substitute the intersection point of each ray among the at least three rays with the inner wall of the water conveyance pipeline and the vertical angle into the elliptical equation of the cross-section of the water conveyance pipeline, and determine the major axis and minor axis of the cross-section of the water conveyance pipeline. For example, the third determination module 503 is used to implement S103 of the above method for measuring the ovality of the water conveyance pipeline.

[0105] The fourth determination module 504 is configured to determine the ovality of the water conveyance pipeline based on the major axis length and minor axis length of the cross-section of the water conveyance pipeline. For example, the fourth determination module 504 is configured to implement S104 of the above-mentioned method for measuring the ovality of the water conveyance pipeline.

[0106] Optionally, the first determination module 501 is specifically configured to: after making the infrared emission tube vertical through a spirit level, set the vertical angles of at least three rays of the infrared emission tube and then emit at least three rays to the inner wall of the water conveyance pipeline; wherein, the infrared emission tube is vertically arranged on a tripod with a spirit level. For each of the at least three rays, take half of the time required for the ray to travel from the emission position to the return position and multiply it by the speed of light as the ray length of the ray. For example, the first determination module 501 is specifically configured to implement S1011 - S1012 of the above-mentioned method for measuring the ovality of the water conveyance pipeline.

[0107] Each module of the above-mentioned device for measuring the ovality of the water conveyance pipeline can also be used to execute other steps in the above method embodiments. All relevant contents involved in the above method embodiments can be cited in the function descriptions of the corresponding functional modules, and will not be elaborated here.

[0108] An embodiment of the present application further provides an electronic device, including: a processor and a memory coupled to the processor; the memory is used to store computer instructions, and when the electronic device runs, the processor executes the computer instructions stored in the memory so that the electronic device executes the method in the above embodiment. Among them, the processor can implement the above-mentioned first determination module 501, second determination module 502, and third determination module 503; the above-mentioned memory can also be used to store the ray length, vertical angle, intersection point of the ray and the inner wall of the water conveyance pipeline, major axis and minor axis of the cross-section of the water conveyance pipeline, and ovality of the water conveyance pipeline, etc.

[0109] An embodiment of the present application further provides a computer-readable storage medium, which includes a computer program. When the computer program runs on a computer, it is used to execute the method described in the above embodiment.

[0110] An embodiment of the present application further provides a computer program product, which includes computer program instructions. When the computer program instructions run on a computer, it is used to execute the method described in the above embodiment.

[0111] Each embodiment in this specification is described in a progressive manner. The same or similar parts among the embodiments can be referred to each other, and the key points of each embodiment are the differences from other embodiments.

[0112] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for measuring the ovality of a water conveyance pipeline, characterized in that, The measurement method includes: Emitting at least three rays to the inner wall of the water conveyance pipeline, and determining the ray length and vertical angle of each ray among the at least three rays; wherein, the at least three rays are emitted from the same position, the ray length is the distance between the emission position of the ray and the intersection point of the ray and the inner wall of the water conveyance pipeline, and the vertical angle is the angle between the ray and the vertical direction in the clockwise direction; the intersection points of the emission positions of each ray among the at least three rays and the inner wall of the water conveyance pipeline satisfy: p i (x0 + h i sinα i , y0 + h i cosα i ) where p i represents the intersection point of the emission position of the i-th ray among the at least three rays and the inner wall of the water conveyance pipeline, x0 represents the coordinate of the emission position of the emission point of the at least three rays on the x-axis of the coordinate system established on the inner wall of the water conveyance pipeline, h i represents the ray length of the i-th ray among the at least three rays, α i represents the vertical angle of the i-th ray among the at least three rays, and y0 represents the coordinate of the emission position of the emission point of the at least three rays on the y-axis of the coordinate system established on the inner wall of the water conveyance pipeline; Determining the intersection point of each ray among the at least three rays and the inner wall of the water conveyance pipeline according to the ray length and vertical angle of each ray among the at least three rays; the determination of the ray length and vertical angle of each ray among the at least three rays includes: After making the infrared emission tube vertical through a level, after the infrared emission tube determines the vertical angles of the at least three rays, emitting the at least three rays to the inner wall of the water conveyance pipeline; wherein, the infrared emission tube is vertically arranged on a tripod with the level. For each ray among the at least three rays, taking the product of half of the time required for the ray to be emitted from the emission position and return to the emission position and the speed of light as the ray length of the ray. Substituting the intersection point of each ray among the at least three rays and the inner wall of the water conveyance pipeline and the vertical angle into the elliptical equation of the cross-section of the water conveyance pipeline to determine the major axis and minor axis of the cross-section of the water conveyance pipeline; the elliptical equation of the cross-section of the water conveyance pipeline satisfies: Among them, x0 represents the coordinate on the x-axis of the coordinate system established on the inner wall of the water conveyance pipeline for the emission position of the emission points of the at least three rays, h i represents the ray length of the i-th ray among the at least three rays, α i represents the vertical angle of the i-th ray among the at least three rays, a represents the length of the major axis of the cross-section of the water conveyance pipeline, y0 represents the coordinate on the y-axis of the coordinate system established on the inner wall of the water conveyance pipeline for the emission position of the emission points of the at least three rays, and b represents the length of the minor axis of the cross-section of the water conveyance pipeline; Determining the ellipticity of the water conveyance pipeline based on the major axis length and minor axis length of the cross-section of the water conveyance pipeline.

2. The method according to claim 1, wherein The ellipticity of the water conveyance pipeline satisfies: Wherein, Δ represents the ellipticity of the water conveyance pipeline, a represents the major axis length of the cross-section of the water conveyance pipeline, and b represents the minor axis length of the cross-section of the water conveyance pipeline.

3. The method according to claim 1, characterized in that, The measurement method measures the ellipticity of the water conveyance pipeline through a pipeline measurement device, and the pipeline measurement device includes a ray distance measuring instrument.

4. A measuring device for the ovality of a water conveyance pipeline, which is used to perform the method according to any one of claims 1 to 3, characterized in that, Including a first determination module, a second determination module, a third determination module, and a fourth determination module; The first determination module is used to emit at least three rays to the inner wall of the water conveyance pipeline and determine the ray length and vertical angle of each ray among the at least three rays; wherein, the at least three rays are emitted from the same position, the ray length is the distance between the ray and the intersection point of the inner wall of the water conveyance pipeline, and the vertical angle is the angle between the ray and the vertical direction. The second determination module is used to determine the intersection point of each ray among the at least three rays and the inner wall of the water conveyance pipeline according to the ray length and vertical angle of each ray among the at least three rays. The third determination module is used to substitute the intersection point of each ray among the at least three rays and the inner wall of the water conveyance pipeline and the vertical angle into the elliptical equation of the cross-section of the water conveyance pipeline to determine the major axis and minor axis of the cross-section of the water conveyance pipeline. The fourth determination module is used to determine the ellipticity of the water conveyance pipeline based on the major axis length and minor axis length of the cross-section of the water conveyance pipeline.

5. An electronic device, characterized in that, It includes a processor and a memory coupled to the processor; the memory is used to store computer instructions, and when the electronic device runs, the processor executes the computer instructions stored in the memory so that the electronic device executes the method according to any one of claims 1 to 3.

6. A computer-readable storage medium, characterized in that, It includes computer program instructions, and when the computer program instructions are executed by a computer, the computer is caused to execute the method according to any one of claims 1 to 3.

7. A computer program product, characterized in that, It includes computer program instructions, and when the computer program instructions run on a computer, the computer is caused to execute the method according to any one of claims 1 to 3.

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