A calibration device and usage method for a pipeline deformation internal detector probe

Abstract

The present invention discloses a calibration device and a usage method for a pipeline deformation internal detector probe. According to one embodiment, it includes a calibration collar and a plurality of limiting rings. The limiting rings are arranged on the inner sidewall of the calibration collar. The plurality of limiting rings are arranged at intervals along the axial direction of the calibration collar. The inner diameters of the plurality of limiting rings gradually increase along the axial direction of the calibration collar. The limiting ring with the smallest inner diameter is used to abut against the outer sidewall of the cylinder body. During use, the limiting rings can simultaneously press down the probe arms on the same cylinder body, so that the magnetic encoder chips on each probe base can output data simultaneously, avoiding the user changing the rotation angles of the probe arms one by one, which is convenient for the user to use.

Description

Technical Field

[0001] The present invention relates to pipeline detection, in particular to a calibration device and a use method for a probe of a pipeline deformation internal detector. Background Art

[0002] Most pipelines have stones and obstacles at the bottom. Due to the self-weight of the pipeline or the influence of terrain settlement, the pipeline is prone to varying degrees of depression after long-term use, resulting in a reduction in the efficiency of oil and gas transportation, an increase in losses caused by leakage during transportation, and serious safety hazards. Therefore, it is necessary to regularly detect the pipeline.

[0003] The existing pipeline deformation internal detector includes a cylinder body, a probe ring, two leather cups, and multiple probe units. The cylinder body is cylindrical. The two leather cups are arranged on the outer side wall of the cylinder body, and the centers of the leather cups are located on the central axis of the cylinder body. The probe ring is arranged on the outer side wall of the cylinder body and between the two leather cups. The probe unit includes a probe base, a spring, a magnet, a probe arm, and an angle sensor. A plurality of probe bases are arranged circumferentially and evenly spaced on the outer side wall of the probe ring. One end of the probe arm is rotatably connected to the probe base, and the end of the probe arm close to the probe base is defined as the bottom. The magnet is arranged at the bottom of the probe arm. A wear-resistant piece is fixed at the top of the probe arm. One end of the spring is fixed to the outer side wall of the probe arm, and the other end is fixed to the probe base. The angle sensor is fixed to the probe base. The angle sensor includes a sensor housing and a magnetic encoder chip. The sensor housing is fixed to the probe base, and the magnetic encoder chip is located inside the sensor housing. The magnetic encoder chip is arranged opposite to the magnet. When the probe arm rotates, the magnet rotates accordingly, the magnetic field around the magnet changes, and the magnetic encoder chip does not rotate. At this time, the magnetic field signal sensed by the magnetic encoder chip changes, and relevant data can be obtained.

[0004] During the installation process, since the installation orientation of the magnet is not fixed, that is, the orientation of the two poles cannot be distinguished, the initial magnetic encoding numbers of each probe are different. Therefore, each detector needs to record the initial data. Since the number of probes is large, it is rather cumbersome to adjust them one by one manually. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: to provide a calibration device and a use method for a probe of a pipeline deformation internal detector to solve one or more technical problems existing in the prior art, and at least provide a beneficial choice or create conditions.

[0006] The solution of the present invention to solve its technical problem is:

[0007] A calibration device for a pipeline deformation internal detector probe, comprising a calibration clamping ring and a plurality of limiting rings. The limiting rings are arranged on the inner side wall of the calibration clamping ring. The plurality of limiting rings are arranged at intervals along the axis direction of the calibration clamping ring. The inner diameters of the plurality of limiting rings gradually increase along the axis direction of the calibration clamping ring. The limiting ring with the smallest inner diameter is used to abut against the outer side wall of the cylinder body.

[0008] The beneficial effect of the present invention is that during use, the limiting rings can simultaneously press down the probe arms on the same cylinder body, enabling the magnetic encoder chips on each probe base to output data simultaneously, avoiding the user from changing the rotation angles of the probe arms one by one, and facilitating the user's use.

[0009] As a further improvement of the above technical solution, the calibration clamping ring includes two interconnected first arc-shaped plates. The two first arc-shaped plates are detachably connected through a first connecting member. The limiting ring includes two first arc-shaped strips, and the first arc-shaped strips are fixedly connected to the inner side wall of the first arc-shaped plate.

[0010] The two detachable first arc-shaped plates are convenient for sleeving on the main body, achieving the effect of facilitating installation.

[0011] As a further improvement of the above technical solution, it further includes two first connecting rings and a plurality of positioning rods. The inner side wall of the first connecting ring is connected to the outer side wall of the cylinder body. An extension plate is arranged on the outer side wall of the calibration clamping ring, and the positioning rods pass through the extension plate and the two first connecting rings.

[0012] The extension plate can slide along the positioning rods, so that the moving direction of the calibration clamping ring is further limited, avoiding the deviation of the calibration clamping ring, enabling the heads of the plurality of probe arms to completely abut against the limiting rings, and then a more accurate magnetic encoding number can be obtained.

[0013] As a further improvement of the above technical solution, the first connecting ring includes two interconnected first connecting plates. The inner side wall of the first connecting plate is connected to the outer side wall of the cylinder body. The two first connecting plates are detachably connected through a second connecting member, and the positioning rods pass through the first connecting plates.

[0014] The two detachable first connecting plates are convenient for sleeving on the main body, achieving the effect of facilitating installation.

[0015] The present invention also provides a usage method of a calibration device for a pipeline deformation internal detector probe, comprising the following steps:

[0016] A: Sleeve the calibration clamping ring on the outer side wall of the cylinder body, install the two first connecting rings on the outer side wall of the cylinder body. The probe ring is located between the two first connecting rings, and the positioning rods pass through the extension plate and the two first connecting rings;

[0017] B: Move the calibration snap ring so that the limiting ring with the largest inner diameter first presses on the top of the probe arm, causing the probe arm to have a depression amount. Then move the calibration snap ring successively so that the probe arm abuts against the limiting rings with different inner diameters;

[0018] C: Calculate the difference between the inner diameter of the limiting ring and the nominal diameter of the internal detector, record the output data of the magnetic encoder chip, and fit a curve graph.

[0019] Press the probe arm against different limiting rings, then obtain the depression amount and the magnetic encoding number, and fit a curve graph. When performing pipeline detection, after obtaining the output data of the magnetic encoder chip, the depression amount can be found on the fitted curve graph, thereby obtaining the actual depression amount of the pipeline. That is, after the detector records the initial data, it is convenient for subsequent pipeline detection work. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly describe the drawings required for the description of the embodiments. Obviously, the described drawings are only a part of the embodiments of the present invention, rather than all embodiments. Those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative efforts.

[0021] Figure 1 It is a schematic structural diagram of Embodiment 1 of the probe calibration device for the pipeline deformation internal detector of the present invention;

[0022] Figure 2 It is a partial structural diagram of Embodiment 2 of the probe calibration device for the pipeline deformation internal detector of the present invention;

[0023] Figure 3 is Figure 2 A partial enlarged schematic diagram of part A in

[0024] In the figure, 1 is the first arc-shaped plate; 11 is the extension plate; 2 is the first arc-shaped strip; 3 is the first connecting plate; 31 is the connecting groove; 4 is the positioning rod; 5 is the connecting piece; 51 is the connecting hole; 6 is the connecting column; 7 is the tooth. Detailed Embodiment

[0025] This part will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the drawings. The role of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the protection scope of the present invention.

[0026] In the description of the present invention, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc., it is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0027] In the description of the present invention, if there are vocabulary descriptions such as "several", its meaning is one or more, and the meaning of multiple is more than two. Understanding greater than, less than, exceeding, etc. does not include the base number, and understanding above, below, within, etc. includes the base number.

[0028] In the description of the present invention, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the above words in the present invention in combination with the specific content of the technical solution.

[0029] Referring to Figure 1 , the following Embodiment 1 is made for the pipeline deformation internal detector probe calibration device of the present invention:

[0030] Referring to Figure 1 , a pipeline deformation internal detector probe calibration device includes two first connection rings and a plurality of positioning rods 4. The inner side walls of the two first connection rings are connected to the outer side wall of the cylinder body. The probe ring is located between the two first connection rings. The two ends of the positioning rod 4 are respectively inserted through the two first connection rings. The positioning rod 4 is located outside the probe arm. Specifically, the number of positioning rods 4 is set to four, and the four positioning rods 4 are arranged at intervals.

[0031] Referring to Figure 1 , for the convenience of installing the first connection ring, the first connection ring includes two first connection plates 3 connected to each other. The transverse section of the first connection plate 3 is in a C shape. The inner side wall of the first connection plate 3 is connected to the outer side wall of the cylinder body. The two first connection plates 3 are detachably connected by a second connecting member. The two first connection plates 3 in the same plane correspond to two second connecting members. The positioning rod 4 is inserted through the first connection plate 3. Specifically, the second connecting member is a bolt.

[0032] Referring to Figure 1 , it further includes a calibration clamping ring and a plurality of limiting rings. The limiting rings are fixed on the inner side wall of the calibration clamping ring. The plurality of limiting rings are arranged at intervals along the axis direction of the calibration clamping ring. The inner diameters of the plurality of limiting rings gradually increase along the axis direction of the calibration clamping ring. An extension plate 11 is arranged on the outer side wall of the calibration clamping ring. The positioning rod 4 is inserted through the extension plate 11. The limiting ring with the smallest inner diameter is used to abut against the outer side wall of the cylinder body. Specifically, the number of limiting rings is set to 7. The calibration clamping ring is in a trumpet shape. The extension plate 11 is close to the limiting ring with the largest inner diameter.

[0033] Reference Figure 1 In order to facilitate the installation and calibration of the clamping ring, the calibration clamping ring includes two interconnected first arc-shaped plates 1. The two first arc-shaped plates 1 are detachably connected by a first connecting member. The limiting ring includes two first arc-shaped strips 2. The first arc-shaped strips 2 are C-shaped, and the first arc-shaped strips 2 are fixedly connected to the inner side wall of the first arc-shaped plate 1. Specifically, the first connecting member is a bolt, and the extension plate 11 is fixed to the outer side wall of the first arc-shaped plate 1.

[0034] When using the pipeline deformation internal detector probe calibration device of the present invention, the two first arc-shaped plates 1 are sleeved on the outer side wall of the cylinder body, the two first arc-shaped plates 1 are connected by a first connecting member, and then the first connecting plate 3 is connected to the outer side wall of the cylinder body by a second connecting member. The positioning rod 4 passes through the first connecting plate 3 and the extension plate 11, and the probe arm is abutted against different limiting rings by moving the first arc-shaped plate 1.

[0035] The present invention also provides a method for using a pipeline deformation internal detector probe calibration device, including the following steps:

[0036] A: The calibration clamping ring is sleeved on the outer side wall of the cylinder body, the two first connecting rings are installed on the outer side wall of the cylinder body, the probe ring is located between the two first connecting rings, and the positioning rod 4 passes through the extension plate 11 and the two first connecting rings;

[0037] B: Move the calibration clamping ring so that the limiting ring with the largest inner diameter first presses on the top of the probe arm, causing the probe arm to have a depression amount. Then, move the calibration clamping ring in sequence so that the probe arm abuts against different limiting rings, thereby generating a larger depression amount;

[0038] C: Calculate the difference between the inner diameter of the limiting ring and the nominal diameter of the internal detector, record the output data of the magnetic encoder chip, and fit a curve graph;

[0039] Specifically, there are 6 limiting rings for changing the depression amount of the probe arm. Each limiting ring represents a different depression amount of the probe arm. The depression amount is the difference between the inner diameter of the limiting ring and the nominal diameter of the internal detector. According to actual needs, when the depression amount is greater than 6%, the pipeline needs to be repaired. Therefore, it is more appropriate to limit the depression amounts of the 6 limiting rings to 6%, 12%, 18%, 24%, 30% and 36% respectively.

[0040] Taking one of the probe arms as an example to illustrate the actual application method, move the calibration clamping ring. The probe arm first abuts against the limit ring with a depression of 6%, and then the magnetic encoding number corresponding to the deformation defect of 6% is generated. Record the depression and the magnetic encoding number. Then, move the calibration clamping ring in sequence so that the probe arm abuts against the limit rings with depressions of 12%, 18%, 24%, 30%, and 36%, and record the depression and the magnetic encoding number. Finally, draw a curve graph with the depression as the horizontal axis and the magnetic encoding number as the vertical axis. During the actual application process, push the pipeline deformation internal detector into the pipeline, read the magnetic encoding number, and find the depression corresponding to the actually read magnetic encoding number on the curve graph. Then, the depression is the deformation amount of the pipeline.

[0041] Referring to Figure 2 and Figure 3 , the following Embodiment 2 is made for the pipeline deformation internal detector probe calibration device of the present invention:

[0042] Referring to Figure 2 and Figure 3 , the difference from Embodiment 1 is that the second connecting member includes a connecting piece 5 and two connecting columns 6. A connecting groove 31 is opened on one side wall of the first connecting plate 3. The connecting column 6 is fixed on the side wall of the first connecting plate 3 and is located in the connecting groove 31, and the connecting grooves 31 on the adjacent first connecting plates 3 are communicated with each other. The connecting piece 5 can abut against the bottom of the adjacent connecting groove 31. Connecting holes 51 are opened on the opposite side edges of the connecting piece 5. The connecting holes 51 penetrate through the two side surfaces of the connecting piece 5. The connecting holes 51 are strip-shaped holes. Rotate the connecting piece 5 so that the connecting column 6 slides into the connecting hole 51 until it abuts tightly against the connecting piece 5. During this process, the two first connecting plates 3 approach each other continuously. Finally, the two first connecting plates 3 are clamped on the outer side wall of the cylinder. In order to ensure that the two first connecting plates 3 can clamp the outer side wall of the cylinder without detachment during the debugging process, an anti-slip layer is provided on the outer side wall of the connecting column 6. And when the connecting column 6 abuts tightly against the connecting piece 5 so that the connecting piece 5 cannot rotate, the connecting column 6 and the connecting piece 5 are in a process fit, enhancing the connection stability of the two first connecting plates 3. During the actual application process, the diameter of the cylinder may change, and there may be a situation where there is a gap between the two adjacent first connecting plates 3. In order to further limit the position of the connecting column 6 in the connecting hole 51, two groups of teeth 7 are provided on the connecting piece 5 and at the position of the connecting hole 51. One group of teeth 7 has a plurality of teeth. The multiple teeth 7 in the same group are arranged along the length direction of the strip-shaped hole. There is a gap between the adjacent teeth 7 in the same group. The material of the teeth 7 is specifically rubber. The connecting column 6 can be clamped by the adjacent teeth 7 in different groups, thereby limiting the position of the connecting column 6 in the connecting hole 51, and further ensuring that the two first connecting plates 3 are clamped on the outer side wall of the cylinder.

[0043] When using the pipeline deformation internal detector probe calibration device of the present invention, two first arc-shaped plates 1 are sleeved on the outer side wall of the cylinder body, and the two first arc-shaped plates 1 are connected through a first connecting piece. Then, by rotating the connecting piece 5, the connecting column 6 is clamped on the cogs 7, so that the first connecting plate 3 is connected to the outer side wall of the cylinder body. The positioning rod 4 passes through the first connecting plate 3 and the extension plate 11, and by moving the first arc-shaped plate 1, the probe arm is made to abut against different limiting rings.

[0044] The above has specifically described the preferred embodiments of the present invention, but the present invention is not limited to the described embodiments. Those skilled in the art can also make various equivalent variations or substitutions without departing from the spirit of the present invention, and these equivalent variations or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A calibration device for a pipeline deformation internal detector probe, characterized in that, it includes a calibration clamping ring and a plurality of limiting rings. The limiting rings are arranged on the inner side wall of the calibration clamping ring. The plurality of limiting rings are arranged at intervals along the axis direction of the calibration clamping ring. The inner diameters of the plurality of limiting rings gradually increase along the axis direction of the calibration clamping ring. The limiting ring with the smallest inner diameter is used to abut against the outer side wall of the cylinder body. The calibration clamping ring includes two interconnected first arc-shaped plates (1). The two first arc-shaped plates (1) are detachably connected through a first connecting member. The limiting ring includes two first arc-shaped strips (2). The first arc-shaped strips (2) are fixedly connected to the inner side wall of the first arc-shaped plate (1). Wherein: The calibration clamping ring is sleeved on the outer side wall of the cylinder body, two first connecting rings are installed on the outer side wall of the cylinder body, the probe ring is located between the two first connecting rings, and the positioning rod (4) passes through the extension plate (11) and the two first connecting rings; Move the calibration clamping ring so that the limiting ring with the largest inner diameter first presses on the top of the probe arm, causing the probe arm to have a pressing amount. Then move the calibration clamping ring in sequence so that the probe arm abuts against the limiting rings with different inner diameters; Calculate the difference between the inner diameter of the limiting ring and the nominal diameter of the internal detector, record the output data of the magnetic encoder chip, and fit a curve graph.

2. The calibration device for a pipeline deformation internal detector probe according to claim 1, characterized in that, it further includes two first connecting rings and a plurality of positioning rods (4). The inner side wall of the first connecting ring is connected to the outer side wall of the cylinder body. An extension plate (11) is arranged on the outer side wall of the calibration clamping ring. The positioning rod (4) passes through the extension plate (11) and the two first connecting rings.

3. The calibration device for a pipeline deformation internal detector probe according to claim 2, characterized in that, the first connecting ring includes two interconnected first connecting plates (3). The inner side wall of the first connecting plate (3) is connected to the outer side wall of the cylinder body. The two first connecting plates (3) are detachably connected through a second connecting member. The positioning rod (4) passes through the first connecting plate (3).

4. A usage method of a calibration device for a pipeline deformation internal detector probe, characterized in that, it includes the following steps: A: Sleeve the calibration clamping ring on the outer side wall of the cylinder body, install two first connecting rings on the outer side wall of the cylinder body, the probe ring is located between the two first connecting rings, and the positioning rod (4) passes through the extension plate (11) and the two first connecting rings; B: Move the calibration clamping ring so that the limiting ring with the largest inner diameter first presses on the top of the probe arm, causing the probe arm to have a pressing amount. Then move the calibration clamping ring in sequence so that the probe arm abuts against the limiting rings with different inner diameters; C: Calculate the difference between the inner diameter of the limiting ring and the nominal diameter of the internal detector, record the output data of the magnetic encoder chip, and fit a curve graph.

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