Pipeline measuring device and measuring method

Abstract

The invention relates to the technical field of pipeline measurement, and discloses a pipeline measuring device and method. The acquisition device is slidably arranged on the vehicle body and is used for acquiring inner diameter data of the circumferential surface of the inner wall of the pipeline and inclination angle data at a measurement point; the processing device is arranged on the vehicle body and is used for performing ellipse fitting according to the inner diameter data and the inclination angle data; according to the pipeline inner wall deformation detection device, the deformation degree of the inner wall of the pipeline can be obtained, the pipeline inner wall deformation detection device is simple and convenient to operate and high in popularization degree, and the problems that the field measurement precision is not high and much manpower is consumed are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline measurement, and in particular to a pipeline measurement device and a measurement method. Background Art

[0002] PCCP, or "prestressed steel cylinder concrete pipe", is a new type of composite pipe made of four basic raw materials: steel plate, prestressed steel wire, concrete and cement mortar. After the manufacturing processes of steel cylinder forming, concrete pouring, application of prestress control technology and protective layer spraying, it has the characteristics of both steel and concrete.

[0003] In the production process of large-diameter PCCP pipelines, due to the excessive weight of the pipelines, they are often deformed when moved, which will make it impossible to connect the two pipelines and waste a lot of money. Therefore, the measurement of pipeline size is particularly important. However, there are currently no mature equipment and methods for the factory inspection of large-diameter PCCP finished pipes. The pipe factory only uses a tape measure to measure the horizontal and vertical lengths of the pipelines for acceptance. The inspection accuracy is low and the human error is large, which seriously affects the construction of subsequent projects. Summary of the invention

[0004] The object of the present invention is to provide a pipeline measuring device and a measuring method, aiming to solve or improve at least one of the above-mentioned technical problems.

[0005] To achieve the above object, the present invention provides the following solution: The present invention provides a pipeline measuring device, comprising:

[0006] Vehicle body;

[0007] An acquisition device is slidably disposed on the vehicle body, and is used to acquire the inner diameter data of the inner wall circumference of the pipeline and the inclination data at the measuring point;

[0008] A processing device, disposed on the vehicle body, and configured to perform ellipse fitting according to the inner diameter data and the inclination angle data;

[0009] A sliding device is arranged on the vehicle body, and is used to drive the acquisition device to slide relative to the vehicle body.

[0010] Optionally, the acquisition device includes an inclinometer.

[0011] Optionally, the acquisition device includes a laser measuring instrument.

[0012] Optionally, the sliding device is an electric telescopic rod.

[0013] Optionally, the processing device includes:

[0014] Output display;

[0015] A processor is integrated in the output display, and the processor is connected to the acquisition device.

[0016] Optionally, a transmission device is also included, which is connected to the processing device.

[0017] Optionally, the vehicle body includes a front beam, a rear beam, and a longitudinal beam arranged between the front beam and the rear beam, and both ends of the front beam and the rear beam are provided with running wheels.

[0018] The present invention also provides a pipeline measurement method, comprising the following steps:

[0019] Place the measuring device in the pipe;

[0020] Obtain the inner diameter data of the inner wall of the pipeline and the inclination data at the measuring point;

[0021] An ellipse fitting is performed according to the inner diameter data and the inclination angle data to obtain the deformation degree of the inner wall of the pipeline.

[0022] Optionally, after placing the measuring device in the pipeline, the method further comprises:

[0023] Find the centerline of the pipeline;

[0024] The center of the pipeline is found based on the central axis.

[0025] Optionally, also include:

[0026] Place the measuring device on the socket end of the pipe;

[0027] The obtaining device is driven to extend along the socket end of the pipeline by the sliding device to obtain the socket length of the socket end of the pipeline.

[0028] The present invention discloses the following technical effects: by placing a vehicle body in a pipeline, an acquisition device acquires the inner diameter data of the inner wall circumference of the pipeline and the inclination data at the measuring point, and then a processing device is used to perform ellipse fitting according to the inner diameter data and the inclination data, and cooperates with a sliding device to drive the acquisition device to acquire data at different measuring points in the pipeline, so that the deformation degree of the inner wall of the pipeline can be obtained. The method is simple and convenient to operate, has a high degree of promotion, and solves the problems of low on-site measurement accuracy and high labor consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0030] Figure 1 It is a schematic diagram of the structure of the measuring device of the present invention;

[0031] Figure 2 It is a schematic diagram of the measuring method of the present invention;

[0032] Figure 3 It is a schematic diagram of measuring the length of the socket of the present invention;

[0033] Figure 4 It is a two-dimensional cross-sectional curve diagram of the present invention;

[0034] Figure 5 It is a schematic diagram of a three-dimensional image of the present invention.

[0035] In the figure: 1. front beam; 2. rear beam; 3. longitudinal beam; 4. front left running wheel; 5. front right running wheel; 6. rear left running wheel; 7. rear right running wheel; 8. telescopic rod; 9. laser measuring instrument; 10. output display; 11. button. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] Reference Figure 1-Figure 5 The present invention provides a pipeline measuring device, comprising:

[0039] Vehicle body;

[0040] An acquisition device is slidably disposed on the vehicle body, and is used to acquire the inner diameter data of the inner wall circumference of the pipeline and the inclination data at the measuring point;

[0041] A processing device is arranged on the vehicle body, and is used for performing ellipse fitting according to the inner diameter data and the inclination angle data;

[0042] The sliding device is arranged on the vehicle body and is used for driving the acquisition device to slide relative to the vehicle body.

[0043] By placing the vehicle body in the pipeline, the acquisition device acquires the inner diameter data of the inner wall of the pipeline and the inclination data at the measuring point, and then the processing device is used to perform ellipse fitting according to the inner diameter data and the inclination data, and cooperates with the sliding device to drive the acquisition device to acquire data at different measuring points in the pipeline, so that the deformation degree of the inner wall of the pipeline can be obtained. The method is simple and convenient to operate, with high promotion degree, and solves the problems of low on-site measurement accuracy and high manpower consumption.

[0044] In one embodiment of the present invention, the acquisition device comprises an inclinometer.

[0045] The inclination measuring instrument is arranged at one end of the longitudinal beam 3 close to the front beam, and is used to detect the inclination angle at the current measuring point.

[0046] In one embodiment of the present invention, the acquisition device comprises a laser measuring instrument 9 .

[0047] There are two laser measuring instruments 9, which are respectively arranged at the two ends of the longitudinal beam 3, so that the laser measuring instrument 9 can rotate to obtain data of the inner wall of the pipeline. The measurement of the two front and rear laser measuring instruments 9 can be more convenient for shorter pipelines, and the accuracy of the measurement data can be verified by comparing the data of the two measurements.

[0048] In one embodiment of the present invention, the sliding device is an electric telescopic rod 8 , and there are two electric telescopic rods 8 , which are respectively arranged between the laser measuring instrument 9 and the longitudinal beam 3 .

[0049] In one embodiment of the present invention, the processing device comprises:

[0050] Output display 10;

[0051] The processor is integrated in the output display 10, and the processor is connected to the acquisition device.

[0052] The output display 10 is also connected to three buttons 11, which can display and store data and switch the output mode (data / image).

[0053] In one embodiment of the present invention, a transmission device is further included, connected to the processing device.

[0054] The transmission device includes a wireless port and a wired port. The wireless connection specifically includes receiving the measurement data through the computer terminal and displaying the data on the computer. The wired connection includes connecting to the computer terminal through a data cable.

[0055] In one embodiment of the present invention, the vehicle body includes a front beam 1, a rear beam 2, and a longitudinal beam 3 disposed between the front beam 1 and the rear beam 2, and both ends of the front beam 1 and the rear beam 2 are provided with running wheels.

[0056] The rear beam 2 is rotatably connected to the longitudinal beam and can rotate 360 ​​degrees in the horizontal plane.

[0057] The four running wheels are respectively a front left running wheel 4, a front right running wheel 5, a rear left running wheel 6, and a rear right running wheel 7, and the running wheels can rotate 360 ​​degrees in a horizontal plane.

[0058] Furthermore, the front beam 1, the rear beam 2 and the longitudinal beam 3 are detachably connected. Since the reserved maintenance pipeline opening on site is small and the device is too large to be carried in, it is convenient to enter the pipeline for measurement.

[0059] The present invention also provides a pipeline measurement method, comprising the following steps:

[0060] Place the measuring device in the pipe;

[0061] Obtain the inner diameter data of the inner wall of the pipeline and the inclination data at the measuring point;

[0062] The deformation degree of the inner wall of the pipe is obtained by performing ellipse fitting based on the inner diameter data and the inclination angle data.

[0063] Specifically, the inner diameter data and the inclination data at the measuring point are converted into two-dimensional coordinates to form a cross-sectional curve graph. The specified section can be selected on the three-dimensional image to unfold the two-dimensional cross-sectional curve graph. The deformation of the inner wall of the pipe can be intuitively seen on the two-dimensional plane, the inner diameter data of each point in the pipe wall can be read out, and the ellipticity of the section can be displayed at the same time.

[0064] Secondly, the electric telescopic rod 8 is extended forward and backward to obtain a continuous cross-sectional curve diagram, and a three-dimensional image inside the pipe is reconstructed. On the three-dimensional image, the inclination angle of each section of the pipe is displayed.

[0065] A reference horizontal plane is set up, and the measuring device is always perpendicular to the pipe section. When the pipe is tilted, the measuring device forms an angle with the horizontal reference plane. The inclination measuring device obtains this angle information and outputs the section at a certain angle relative to this angle. By observing the image, the deformation trend of the pipe along the pipe axis direction can be intuitively seen.

[0066] In one embodiment of the present invention, after placing the measuring device in the pipeline, the method further comprises:

[0067] Find the central axis of the pipeline, place the measuring device in the pipeline, and wait until the measuring device is still, that is, on the central axis;

[0068] Find the center of the pipeline based on the central axis, specifically:

[0069] Adjust the pointer to point to 0° (0° is vertically upward), and read the data m1 at this time;

[0070] Adjust the pointer to point to 180° and read the data m2 at this time;

[0071] The distance b from the center of the circle to the bottom of the pipe is:

[0072] 2b=m1+2r+m2

[0073] Measure the distance Rn from any point in the pipeline to the center of the circle;

[0074] When the angle pointed by the pointer is θ and the distance from the measuring point to the device is mn, the distance Rn from any point to the center of the circle is equal to 01G, which is obtained from triangle GO102:

[0075]

[0076] in:

[0077] O1O2=b-m2-r;O2G=r+m n .

[0078] Furthermore, a pointer is arranged at the front end of the laser measuring instrument 9, and the rotating shaft of the pointer is coaxial with the rotation center of the laser measuring instrument 9. The rotation angle of the laser measuring instrument 9 can be controlled by a button or a computer, thereby driving the pointer to rotate synchronously.

[0079] In one embodiment of the present invention, it also includes:

[0080] Place the measuring device on the bell end of the pipe, stopping close to the port;

[0081] The obtaining device is driven by the sliding device to extend along the socket end of the pipe to obtain the socket length of the socket end of the pipe. Specifically, when the laser measuring instrument 9 detects a large change in the pipe diameter, the starting measurement section is set and counting begins; after the starting measurement section is set, it continues to extend forward. When the laser measuring instrument extends from the socket end, this section is the end measurement section, and the reading at this moment is the socket length L.

[0082] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0083] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A pipeline measuring device, characterized in that: include: Vehicle body; An acquisition device is slidably disposed on the vehicle body, and is used to acquire the inner diameter data of the inner wall circumference of the pipeline and the inclination data at the measuring point; A processing device, disposed on the vehicle body, and configured to perform ellipse fitting according to the inner diameter data and the inclination angle data; A sliding device is arranged on the vehicle body, and is used to drive the acquisition device to slide relative to the vehicle body.

2. A pipeline measuring device according to claim 1, characterized in that: The acquisition device includes an inclinometer.

3. A pipeline measuring device according to claim 1, characterized in that: The acquisition device comprises a laser measuring instrument (9).

4. A pipeline measuring device according to claim 1, characterized in that: The sliding device is an electric telescopic rod (8).

5. A pipeline measuring device according to claim 1, characterized in that: The processing device comprises: Output Display (10); A processor is integrated in the output display (10), and the processor is connected to the acquisition device.

6. A pipeline measuring device according to claim 1, characterized in that: It also includes a transmission device connected to the processing device.

7. A pipeline measuring device according to claim 1, characterized in that: The vehicle body comprises a front beam (1), a rear beam (2), and a longitudinal beam (3) arranged between the front beam (1) and the rear beam (2); both ends of the front beam (1) and the rear beam (2) are provided with running wheels.

8. A pipeline measurement method, based on a pipeline measurement method according to any one of claims 1 to 7, characterized in that: The following steps are involved: Place the measuring device in the pipe; Obtain the inner diameter data of the inner wall of the pipeline and the inclination data at the measuring point; An ellipse fitting is performed according to the inner diameter data and the inclination angle data to obtain the deformation degree of the inner wall of the pipeline.

9. A pipeline measurement method according to claim 8, characterized in that: After the measuring device is placed in the pipeline, the method further comprises: Find the centerline of the pipeline; The center of the pipeline is found based on the central axis.

10. A pipeline measurement method according to claim 8, characterized in that: Also includes: Place the measuring device on the socket end of the pipe; The obtaining device is driven to extend along the socket end of the pipeline by the sliding device to obtain the socket length of the socket end of the pipeline.

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