Pipeline laser diameter measuring device

Abstract

The utility model relates to a pipeline laser diameter measuring device, which relates to the pipeline detection equipment field, and comprises a housing, a camera, a laser and a cone mirror, the camera, the laser and the cone mirror are coaxially arranged and fixed in the housing, and a light emitting part of the laser is arranged between the camera and the cone mirror. The diameter of the cone lens is gradually increased from one end facing the camera to one end away from the camera, the side wall of the shell is provided with a transparent area, and the light-emitting part of the laser and the cone lens are correspondingly located on the inner side of the transparent area. The pipeline laser diameter measuring device has the advantages that the pipeline laser diameter measuring device is a device for measuring the inner diameter of a pipeline in a non-contact mode, the inner diameter of the whole circumference of the pipeline can be dynamically measured, high-precision and high-resolution pipeline inner diameter data can be obtained, the inner contour of the pipeline can be explored and generated on the basis, and deformation information of the whole circumference of the pipeline can be obtained.

Description

Technical Field

[0001] The utility model relates to the field of pipeline detection equipment, in particular to a pipeline laser diameter measuring device. Background Art

[0002] As a bridge connecting oil and gas production areas and consumer markets, oil and gas pipelines can efficiently and safely transport large amounts of oil and gas resources and ensure national energy supply. In recent years, many oil and gas pipeline safety accidents have occurred in my country, causing significant casualties and property losses. Therefore, strengthening the safety management of oil and gas pipelines and regularly inspecting pipelines for defects and deformations can effectively improve the reliability and safety of pipeline operation.

[0003] At present, most of the pipeline diameter measurement uses aluminum plate pigs, that is, a diameter measuring aluminum plate is installed on the frame of a conventional leather cup pig. This method has poor feasibility, a long detection cycle, and consumes a lot of manpower and material resources. It cannot accurately find all the excessive deformations on the pipeline at one time. Utility Model Content

[0004] The technical problem to be solved by the utility model is how to conveniently detect pipeline defects and deformations.

[0005] The utility model provides a technical solution to the above technical problems as follows: a pipeline laser diameter measuring device, comprising a shell, a camera, a laser and a conical mirror, wherein the camera, the laser and the conical mirror are coaxially arranged and fixed in the shell, the light-emitting portion of the laser is located between the camera and the conical mirror, the diameter of the conical mirror gradually increases from one end facing the camera to one end away from the camera, the side wall of the shell has a transparent area, and the light-emitting portion of the laser and the conical mirror are correspondingly located inside the transparent area.

[0006] The beneficial effect of the utility model is that the light-emitting part of the laser can emit a laser line along its radial direction, and can emit multiple laser lines along the circumferential direction, thereby forming a ring laser. When the pipeline laser diameter measuring device is placed in the pipeline, the ring laser will hit the inner wall of the pipeline, and then be reflected back by the inner wall of the pipeline, hit the axle, and then be reflected by the axle to the camera. The larger the pipe diameter, the farther the point reflected on the axle is from the center of the axle, and the larger the diameter of the reflected light captured by the camera; the smaller the pipe diameter, the closer the point reflected on the axle is to the center of the axle, and the smaller the diameter of the reflected light captured by the camera. Therefore, the size of the pipe diameter can be judged based on the reflected light captured by the camera and the geometric relationship.

[0007] The pipeline laser diameter measuring device is a non-contact device for measuring the inner diameter of the pipeline. It can dynamically measure the inner diameter of the entire circumference of the pipeline and obtain high-precision and high-resolution pipeline inner diameter data. On this basis, it can explore and generate the internal contour of the pipeline and obtain the deformation information of the entire circumference of the pipeline.

[0008] On the basis of the above technical solution, the present invention can also be improved as follows.

[0009] Furthermore, the conical mirror is sleeved on the outer side of the middle part of the laser.

[0010] The beneficial effect of adopting the above further solution is that the axle is sleeved on the outside of the laser, the assembly structure is compact, and the light-emitting part of the laser can be ensured to be located between the camera and the axle.

[0011] Furthermore, it also includes a laser cooling bracket, which is fixed in the shell and located at the end of the cone mirror away from the camera, and the laser is fixedly connected to the laser cooling bracket.

[0012] The beneficial effect of adopting the above further solution is that the laser is supported and fixed by the laser cooling bracket.

[0013] Furthermore, it also includes a fan, which is fixedly connected to the side wall of the laser cooling bracket.

[0014] The beneficial effect of adopting the above further solution is that the fan speeds up the air flow speed in the housing and increases the heat dissipation of the laser.

[0015] Furthermore, the shell includes a cylinder, a first connecting frame and a second connecting frame, the first connecting frame and the second connecting frame are arranged at intervals along the axial direction of the cylinder and are both fixedly connected to the cylinder, the camera is fixedly connected to the first connecting frame and the second connecting frame, the laser and the conical mirror are both located on the side of the second connecting frame facing away from the first connecting frame, and the side wall of the cylinder has the transparent area.

[0016] The beneficial effect of adopting the above further solution is that the first connecting frame and the second connecting frame separate the internal space of the cylinder, place the laser and the conical mirror in the same area, and reduce the impact of the heat of the laser on other electronic equipment.

[0017] Furthermore, it also includes a main control board and a power supply, and the main control board is electrically connected to the power supply, the camera and the laser respectively.

[0018] The beneficial effects of adopting the above further solution are: the power supply provides power to the main control board and the camera, and the main control board receives and stores data acquired by the camera.

[0019] Furthermore, it also includes a power supply bracket, which is fixedly connected to a side of the first connecting frame facing away from the second connecting frame, and the power supply is fixedly connected to the power supply bracket.

[0020] The beneficial effect of adopting the above further solution is that the power supply is supported and fixed by the power supply bracket, and the power supply and the laser are separated by the first connecting frame and the second connecting frame, so as to prevent the power supply from being affected by the heat of the laser.

[0021] Furthermore, it also includes a main control board bracket, which is fixedly connected to a side of the first connecting frame facing away from the second connecting frame, and the main control board is fixedly connected to the main control board bracket.

[0022] The beneficial effect of adopting the above further solution is that the main control board is supported by the main control board bracket and is separated from the laser, thereby reducing the mutual influence of heat.

[0023] Furthermore, a wiring compartment is provided on the side wall of the cylinder, an electrical connector is fixed in the wiring compartment, and the electrical connector is electrically connected to the main control board.

[0024] The beneficial effect of adopting the above further solution is that an electrical connector capable of communicating with the outside is provided in the wiring compartment to read data in the main control board and to be able to wire and debug the camera, etc.

[0025] Furthermore, it also includes a moving mechanism, and the shell also includes a connecting seat and a sealing end cover, the connecting seat and the sealing end cover are respectively fixed to the two ends of the cylinder, and the connecting seat is fixedly connected to the moving mechanism.

[0026] The beneficial effect of adopting the above further solution is that the connecting seat and the sealing end cover seal the two ends of the cylinder to prevent external impurities from affecting the accuracy of the electronic device. The connecting seat is connected to the moving mechanism, and the moving mechanism can move along the pipeline with the shell and the internal equipment to detect defects and deformations of the entire pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of the pipeline laser diameter measuring device of the utility model;

[0028] Figure 2 The schematic diagram of the pipeline laser diameter measuring device of the utility model is shown in FIG. 1 , wherein the thick solid line represents the laser line emitted by the laser, and the dotted line represents the reflected laser line;

[0029] Figure 3 This is the schematic diagram for inner diameter calculation.

[0030] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0031] 1. Shell; 101. Transparent area; 102. First connecting frame; 103. Second connecting frame; 2. Camera; 3. Laser; 4. Conical mirror; 5. Laser cooling bracket; 6. Fan; 7. Power supply bracket; 8. Main control board bracket; 9. Wiring compartment; 10. Connecting seat; 11. Sealing end cover. DETAILED DESCRIPTION

[0032] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0033] like Figure 1-Figure 3 As shown, this embodiment provides a pipeline laser diameter measuring device, including a shell 1, a camera 2, a laser 3 and a cone mirror 4, the camera 2, the laser 3 and the cone mirror 4 are coaxially arranged and fixed in the shell 1, the light-emitting part of the laser 3 is located between the camera 2 and the cone mirror 4, the diameter of the cone mirror 4 gradually increases from one end facing the camera 2 to one end away from the camera 2, the side wall of the shell 1 has a transparent area 101, and the light-emitting part of the laser 3 and the cone mirror 4 are correspondingly located on the inner side of the transparent area 101.

[0034] The light-emitting part of the laser 3 can emit a laser line along its radial direction, and can emit multiple laser lines along the circumferential direction, thereby forming a ring laser. When the pipeline laser diameter measuring device is placed in the pipeline, the ring laser will hit the inner wall of the pipeline, and then be reflected back by the inner wall of the pipeline, hit the cone mirror 4, and then be reflected by the cone mirror 4 to the camera 2. The larger the pipe diameter, the farther the point reflected on the cone mirror 4 is from the center of the cone mirror 4, and the larger the diameter of the reflected light captured by the camera 2; the smaller the pipe diameter, the closer the point reflected on the cone mirror 4 is to the center of the cone mirror 4, and the smaller the diameter of the reflected light captured by the camera 2. Therefore, the size of the pipe diameter can be judged based on the reflected light captured by the camera 2 and the geometric relationship.

[0035] The pipeline laser diameter measuring device is a non-contact device for measuring the inner diameter of the pipeline. It can dynamically measure the inner diameter of the entire circumference of the pipeline and obtain high-precision and high-resolution pipeline inner diameter data. On this basis, it can explore and generate the internal contour of the pipeline and obtain the deformation information of the entire circumference of the pipeline.

[0036] In this embodiment, the detection principle of the pipeline laser diameter measuring device is as follows: Figure 2 As shown in the figure, the outermost rectangle represents the pipe. After the laser line is reflected on the pipe wall, it will fall on the axle 4. Then the reflection point on the axle 4 will be captured by the camera 2 and imaged on the imaging chip. The imaging position on the imaging chip has a one-to-one approximate linear relationship with the position of the laser line on the pipe wall. That is: Figure 3 As shown, the laser line on the pipe wall is a circle, and the multiple points on the conical mirror 4 seen from the camera 2 also form a circle, and there is a one-to-one linear relationship between the shape and position. All imaging points obtained on the imaging chip are distributed around the center position of the imaging chip in a position and shape similar to the line laser on the real pipe wall around the center position of the laser 3. Therefore, by analyzing the position of the point on the imaging chip of the camera 2, the inner diameter R of the pipe wall can be calculated according to the X coordinate and Y coordinate of each point.

[0037] On the basis of the above technical solution, the conical mirror 4 is sleeved on the outer side of the middle part of the laser 3 .

[0038] The axle 4 is sleeved on the outside of the laser 3 , and the assembly structure is compact, and it can ensure that the light-emitting part of the laser 3 is located between the camera 2 and the axle 4 .

[0039] On the basis of the above technical solution, the pipeline laser diameter measuring device also includes a laser cooling bracket 5, which is fixed in the shell 1 and located at the end of the conical mirror 4 away from the camera 2, and the laser 3 is fixedly connected to the laser cooling bracket 5.

[0040] The laser 3 is supported and fixed by a laser cooling bracket 5 .

[0041] On the basis of the above technical solution, the pipeline laser diameter measuring device further includes a fan 6 , and the fan 6 is fixedly connected to the side wall of the laser cooling bracket 5 .

[0042] The fan 6 speeds up the air flow in the housing 1 and increases the heat dissipation of the laser 3 .

[0043] Optionally, a semiconductor cooling sheet may be installed on the laser cooling bracket 5 to increase the cooling effect on the laser 3 .

[0044] On the basis of the above technical solution, the shell 1 includes a cylinder, a first connecting frame 102 and a second connecting frame 103, the first connecting frame 102 and the second connecting frame 103 are arranged at intervals along the axial direction of the cylinder, and are both fixedly connected to the cylinder, the camera 2 is fixedly connected to the first connecting frame 102 and the second connecting frame 103, the laser 3 and the conical mirror 4 are both located on the side of the second connecting frame 103 facing away from the first connecting frame 102, and the side wall of the cylinder has the transparent area 101.

[0045] The first connecting frame 102 and the second connecting frame 103 separate the inner space of the cylinder, placing the laser 3 and the cone mirror 4 in the same area, thereby reducing the influence of the heat of the laser 3 on other electronic equipment.

[0046] Specifically, Figure 1 As shown, the first connecting frame 102 and the second connecting frame 103 are both perpendicular to the axis of the cylinder.

[0047] On the basis of the above technical solution, the pipeline laser diameter measuring device also includes a main control board and a power supply, and the main control board is electrically connected to the power supply, the camera 2 and the laser 3 respectively.

[0048] The power supply provides power to the main control board and the camera 2 , and the main control board receives and stores the data acquired by the camera 2 .

[0049] Specifically, the main control board is also electrically connected to the fan 6 .

[0050] On the basis of the above technical solution, the pipeline laser diameter measuring device further includes a power supply bracket 7 , which is fixedly connected to a side of the first connecting frame 102 facing away from the second connecting frame 103 , and the power supply is fixedly connected to the power supply bracket 7 .

[0051] The power supply is supported and fixed by a power supply bracket 7. The power supply and the laser 3 are separated by a first connecting frame 102 and a second connecting frame 103 to prevent the power supply from being affected by the heat of the laser 3.

[0052] Specifically, the power supply bracket 7 is perpendicular to the first connecting frame 102, so that the power supply has sufficient installation space.

[0053] On the basis of the above technical solution, the pipeline laser diameter measuring device also includes a main control board bracket 8, which is fixedly connected to the side of the first connecting frame 102 facing away from the second connecting frame 103, and the main control board is fixedly connected to the main control board bracket 8.

[0054] The main control board is supported by a main control board bracket 8 and is separated from the laser 3 to reduce the mutual influence of heat.

[0055] Specifically, the main control board bracket 8 is perpendicular to the first connecting frame 102 .

[0056] On the basis of the above technical solution, a wiring compartment 9 is provided on the side wall of the cylinder, an electrical connector is fixed in the wiring compartment 9, and the electrical connector is electrically connected to the main control board.

[0057] The wiring compartment 9 is provided with an electrical connector capable of communicating with the outside to read data in the main control board and to connect and debug the camera 2, etc.

[0058] Specifically, there are one or more electrical connectors.

[0059] On the basis of the above technical solution, the pipeline laser diameter measuring device also includes a moving mechanism, and the shell 1 also includes a connecting seat 10 and a sealing end cover 11, the connecting seat 10 and the sealing end cover 11 are respectively fixed at the two ends of the cylinder, and the connecting seat 10 is fixedly connected to the moving mechanism.

[0060] The connection base 10 and the sealing end cap 11 seal the two ends of the cylinder to prevent external impurities from affecting the accuracy of the electronic device. The connection base 10 is connected to the moving mechanism, which can move along the pipeline with the housing 1 and the internal equipment to detect defects and deformations of the entire pipeline.

[0061] In one specific example, the moving mechanism is a pipeline trolley that can move in the pipeline.

[0062] Experiments have shown that the pipeline laser diameter measuring device of this embodiment can accurately measure tiny size changes and effectively measure tiny protrusions of 1mm-3mm on the inner wall of the pipeline.

[0063] In the description of the present invention, it should be noted that the terms "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0064] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0065] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0066] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pipeline laser diameter measuring device, characterized in that: The invention comprises a housing (1), a camera (2), a laser (3) and a cone mirror (4); the camera (2), the laser (3) and the cone mirror (4) are coaxially arranged and fixed in the housing (1); a light-emitting portion of the laser (3) is located between the camera (2) and the cone mirror (4); a diameter of the cone mirror (4) gradually increases from an end facing the camera (2) to an end away from the camera (2); a side wall of the housing (1) has a transparent area (101); and the light-emitting portion of the laser (3) and the cone mirror (4) are correspondingly located inside the transparent area (101).

2. A pipeline laser diameter measuring device according to claim 1, characterized in that: The cone mirror (4) is sleeved on the outside of the middle part of the laser (3).

3. A pipeline laser diameter measuring device according to claim 2, characterized in that: It also comprises a laser cooling bracket (5), which is fixed in the housing (1) and located at an end of the conical mirror (4) away from the camera (2), and the laser (3) is fixedly connected to the laser cooling bracket (5).

4. A pipeline laser diameter measuring device according to claim 3, characterized in that: It also comprises a fan (6), wherein the fan (6) is fixedly connected to the side wall of the laser cooling bracket (5).

5. A pipeline laser diameter measuring device according to any one of claims 1 to 4, characterized in that: The shell (1) comprises a cylinder, a first connecting frame (102) and a second connecting frame (103); the first connecting frame (102) and the second connecting frame (103) are arranged at intervals along the axial direction of the cylinder and are both fixedly connected to the cylinder; the camera (2) is fixedly connected to the first connecting frame (102) and the second connecting frame (103); the laser (3) and the conical mirror (4) are both located on a side of the second connecting frame (103) facing away from the first connecting frame (102); and the side wall of the cylinder has the transparent area (101).

6. A pipeline laser diameter measuring device according to claim 5, characterized in that: It also includes a main control board and a power supply, wherein the main control board is electrically connected to the power supply, the camera (2) and the laser (3) respectively.

7. A pipeline laser diameter measuring device according to claim 6, characterized in that: It also comprises a power supply bracket (7), the power supply bracket (7) being fixedly connected to a side of the first connecting frame (102) facing away from the second connecting frame (103), and the power supply being fixedly connected to the power supply bracket (7).

8. The pipeline laser diameter measuring device according to claim 6, characterized in that: It also includes a main control board bracket (8), the main control board bracket (8) being fixedly connected to a side of the first connecting frame (102) facing away from the second connecting frame (103), and the main control board is fixedly connected to the main control board bracket (8).

9. The pipeline laser diameter measuring device according to claim 6, characterized in that: The side wall of the cylinder is provided with a wiring compartment (9), an electrical connector is fixed in the wiring compartment (9), and the electrical connector is electrically connected to the main control board.

10. The pipeline laser diameter measuring device according to claim 5, characterized in that: It also includes a moving mechanism, and the shell (1) also includes a connecting seat (10) and a sealing end cover (11), the connecting seat (10) and the sealing end cover (11) are respectively fixed to the two ends of the cylinder, and the connecting seat (10) is fixedly connected to the moving mechanism.

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