A casing coupling joint measuring device, a method for obtaining J value and a detection method

Abstract

This invention belongs to the field of pipeline engineering, specifically relating to a measuring device for oil casing pipe joints, a method for obtaining J-values, and a detection method. The measuring device for oil casing pipe joints includes a measuring body, a positioning and fixing plate, a grating ruler, a sensing probe, and a terminal. The positioning and fixing plate is disposed on the side of the measuring body, and the grating ruler is disposed at the end of the positioning and fixing plate away from the measuring body. The sensing probe is disposed within the positioning and fixing plate and can extend towards the end away from the measuring body. Both the grating ruler and the sensing probe are connected to the terminal. The measuring device of this invention, with its grating ruler and sensing probe, can measure the coupling length and the length from the coupling end to the pipe end. These measured values ​​can be used to calculate the J-value. Due to the high accuracy of the measurement of the coupling length and the length from the coupling end to the pipe end, the accuracy of the obtained J-value can be improved.

Description

Technical Field

[0001] This invention belongs to the field of pipelines, specifically relating to a measuring device for an oil casing pipe joint, a method for obtaining the J value, and a testing method. Background Technology

[0002] During the processing and use of oil pipelines, the pipelines are connected to each other using couplings. The specific connection method is as follows: external threads are set at the end of the pipeline, and internal threads are set in the coupling. Two pipelines are connected to each end of a coupling.

[0003] During this connection process, it is necessary to measure the distance from the end of the pipe inside the coupling to the center of the coupling, i.e., the pipe J value, to determine whether the connection between the pipe and the coupling is qualified.

[0004] Currently, the J value is obtained through direct measurement, which has the disadvantages of poor measurement accuracy and lack of traceability of measurement results.

[0005] In view of this, the present invention is hereby proposed. Summary of the Invention

[0006] To address the technical problems existing in the prior art, this invention provides a measuring device for oil casing pipe joints, a method for obtaining J values, and a detection method. The measuring device of this invention is equipped with a grating ruler and an induction probe, which can measure the length of the coupling and the length from the coupling end to the pipe end. These measured values ​​can be used to calculate the J value. Because the measurement accuracy of the coupling length and the length from the coupling end to the pipe end is high, the accuracy of the obtained J value can be improved.

[0007] This invention includes the following technical solutions:

[0008] The first aspect of the present invention provides a measuring device for an oil casing joint, comprising a measuring body, a positioning and fixing plate, a grating ruler, a sensing probe, and a terminal. The positioning and fixing plate is disposed on the side of the measuring body, and the grating ruler is disposed at the end of the positioning and fixing plate away from the measuring body. The sensing probe is disposed inside the positioning and fixing plate and can extend toward the end away from the measuring body. Both the grating ruler and the sensing probe are connected to the terminal.

[0009] Furthermore, the terminal includes:

[0010] Transceiver, used to send and receive signals;

[0011] The controller is configured to receive a coupling length signal from a grating ruler, which includes a signal for calculating the J value, and a signal from a sensing probe, which includes a signal for calculating the length from the coupling end to the pipe end, and to calculate the J value based on the coupling length and the length from the coupling end to the pipe end.

[0012] Furthermore, the terminal also includes a display configured to display the coupling length, the length from the coupling end to the pipe end, and the J value.

[0013] Furthermore, the controller calculates the J value based on a preset formula, which is: J = H - NL / 2;

[0014] Where H is the length from the end of the coupling to the end of the pipe, and NL is the length of the coupling.

[0015] Furthermore, it also includes a guide rail, on which the bottom of the measuring body is slidably connected.

[0016] Furthermore, the measuring body and the positioning and fixing plate are connected by a driving structure, which is used to drive the positioning and fixing plate to move up and down.

[0017] A second aspect of the present invention provides a method for obtaining a J value, implemented based on the pipeline measuring device described above, the method for obtaining a J value comprising the following steps:

[0018] The end of the coupling of the oil casing is abutted against the positioning and fixing plate;

[0019] The length NL of the coupling is measured using a grating ruler, and the length H from the end of the coupling to the end of the pipe is measured using a sensing probe.

[0020] The J value of the oil casing is calculated based on the coupling length NL and the length H from the coupling end to the pipe end.

[0021] A third aspect of the present invention provides a method for detecting pipe joints, including the method for obtaining the J value described above, wherein the detection method includes the following steps:

[0022] Determine whether the J value is within a preset range:

[0023] If the J value is within the preset range, it indicates that the pipe joint is qualified;

[0024] If the J value is not within the preset range, it indicates that the pipe joint is unqualified.

[0025] Furthermore, when the internal thread of the coupling is an off-center thread, the preset range is 3.18mm to 17.78mm.

[0026] Furthermore, when the internal thread of the coupling is a round thread, the preset range is 6.35mm to 17.78mm.

[0027] By adopting the above technical solution, the present invention has the following advantages:

[0028] 1. The measuring device of the present invention can measure the length of the coupling and the length from the end of the coupling to the end of the pipe by means of a grating ruler and a sensing probe. The measured value can be used to calculate the J value. Since the measurement accuracy of the coupling length and the length from the end of the coupling to the end of the pipe is high, the accuracy of the obtained J value can be improved.

[0029] 2. The present invention calculates the J value by measuring the coupling length NL and the length H from the coupling end to the pipe end, and the acquisition of the J value is traceable.

[0030] 3. The measuring device of the present invention can realize the automated measurement of pipe joints, which has the advantage of improving measurement efficiency.

[0031] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention can be realized and obtained by means of the structures pointed out in the description and the drawings. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure of an oil casing pipe joint measuring device according to an embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram of the structure during pipe joint measurement in an embodiment of the present invention;

[0035] Figure 3 This is a schematic diagram of the oil casing structure in an embodiment of the present invention;

[0036] Figure 4 This is a schematic diagram of the support structure supporting the oil casing in an embodiment of the present invention;

[0037] In the figure, 10-measuring body, 20-positioning and fixing plate, 30-grating ruler, 40-sensing probe, 50-guide rail, 60-drive structure, 70-oil casing, 71-coupling, 72-pipeline, 80-terminal, 90-support structure. Detailed Implementation

[0038] The following description provides many different embodiments or examples for implementing various features of the invention. The elements and arrangements described in the specific examples below are only for concise expression of the invention and are merely examples, not intended to limit the invention.

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] In this embodiment, as Figure 3 The diagram shows the structure of the oil casing pipe; the oil casing pipe has a coupling 71 connected to a pipe at one end; it is necessary to measure the pipe joint of the oil casing pipe, that is, to measure the length NL of the coupling 71 and the length H from the end of the coupling 71 to the end of the pipe 72. The J value is calculated by measuring the length NL of the coupling 71 and the length H from the end of the coupling 71 to the end of the pipe 72.

[0041] It should be noted that the positions representing the length NL of coupling 71, the length H from the end of coupling 71 to the end of pipe 72, and the J value should be based on... Figure 3 The location marked in the text shall prevail.

[0042] In existing technologies, the J value is obtained by direct measurement, which requires positioning and measurement. However, both positioning and measurement have errors, resulting in low accuracy of the final measured J value.

[0043] In this embodiment, the internal thread of the coupling 71 used to connect the pipe is a tapered thread.

[0044] This embodiment provides a pipe joint measuring device, such as... Figure 1 As shown, the device includes a measuring body 10, a positioning and fixing plate 20, a grating ruler 30, a sensing probe 40, and a terminal 80. The positioning and fixing plate 20 is disposed on the side of the measuring body 10. The grating ruler 30 is disposed at the end of the positioning and fixing plate 20 away from the measuring body 10. The sensing probe 40 is disposed inside the positioning and fixing plate 20 and can extend towards the end away from the measuring body 10. Both the grating ruler 30 and the sensing probe 40 are connected to the terminal 80. The terminal 80 can be used to control the operation of the grating ruler 30 and the sensing probe 40, and can also be used to receive length signals sent by the grating ruler 30 and the sensing probe 40.

[0045] The location of the terminal 80 is not limited, but preferably, the terminal 80 is located on the measuring body 10.

[0046] Measurement process, such as Figure 2 As shown, the end of the coupling 71 of the oil casing 70 is brought into contact with the positioning and fixing plate 20; the length of the coupling 71 is measured by the grating ruler 30; the length from the end of the coupling 71 to the end of the pipe 72 is measured by the sensing probe 40. Specifically, the sensing probe 40 is extended so that the end of the sensing probe 40 contacts the end of the pipe 72 to measure the length from the end of the coupling 71 to the end of the pipe 72.

[0047] It should be noted that the positional relationship between the sensing probe 40 and the grating ruler 30 is not limited in this invention. When measuring the pipe 72 connector, the sensing probe 40 and the grating ruler 30 can be measured simultaneously by adjusting the position of the pipe 72 connector; or the sensing probe 40 and the grating ruler 30 do not necessarily have to be measured simultaneously. After the sensing probe 40 completes its measurement, the position of the pipe 72 connector is adjusted, and then the grating ruler 30 performs its measurement; or after the grating ruler 30 completes its measurement, the position of the pipe 72 connector is adjusted, and then the sensing probe 40 performs its measurement.

[0048] The measuring device does not require positioning when measuring the length of the coupling 71 and the length from the end of the coupling 71 to the end of the pipe 72 (it only needs to contact the end of the coupling 71 with the positioning and fixing plate 20, which reduces the positioning error). This improves the accuracy of the measured length of the coupling 71 and the length from the end of the coupling 71 to the end of the pipe 72, thereby improving the accuracy of the J value calculated from the length of the coupling 71 and the length from the end of the coupling 71 to the end of the pipe 72.

[0049] After measuring the length of coupling 71 and the length from the end of coupling 71 to the end of pipe 72 using the measuring device, the length of coupling 71 and the length from the end of coupling 71 to the end of pipe 72 can be recorded, and then the J value can be obtained manually; however, the manual calculation method has the drawback of low efficiency.

[0050] Therefore, in some embodiments, the terminal 80 includes: a transceiver for transmitting and receiving signals; and a controller configured to receive a coupling length signal from a grating ruler for calculating the J value and a length signal from the coupling end to the pipe end for calculating the J value from a sensing probe, and to calculate the J value based on the coupling length and the length from the coupling end to the pipe end; the terminal 80 performs the calculation of the J value, which effectively improves the efficiency of obtaining the J value.

[0051] In some embodiments, the terminal 80 further includes a display configured to display the length of the coupling 71, the length from the end of the coupling 71 to the end of the pipe 72, and the J value.

[0052] In some embodiments, the controller calculates the J value based on a preset formula, which is: J = H - NL / 2.

[0053] like Figure 4 As shown, when measuring the oil casing 70, if the height of the pipe 72 does not meet the measurement requirements, the oil casing 70 can be supported by the support structure 90. By setting and replacing the support structure 90 with different heights, the different heights of the oil casing 70 can be adjusted.

[0054] In some embodiments, such as Figure 1 As shown, it also includes a guide rail 50, on which the bottom of the measuring body 10 is slidably connected. Since the oil casing 70 has a certain weight, the guide rail 50 is provided so that the measuring body 10 can slide to adapt to the oil casing 70, which has the advantages of reducing labor intensity and improving the measurement efficiency of the oil casing 70.

[0055] In some embodiments, the measuring body 10 and the positioning and fixing plate 20 are connected by a driving structure 60, which drives the positioning and fixing plate 20 to move up and down. This allows adjustment of the alignment between the end of the coupling 71 and the positioning and fixing plate 20, which can be achieved by adjusting the height of the positioning and fixing plate 20. This reduces labor intensity and improves the measurement efficiency of the oil casing 70.

[0056] In some embodiments, the drive structure 60 includes an adjusting screw. Adjusting grooves extending towards the upper and lower ends of the measuring body 10 are formed on the side of the measuring body 10. A positioning and fixing plate 20 is disposed within the adjusting groove, with its left and right sides respectively abutting against the two walls of the adjusting groove. The adjusting screw, located within the adjusting groove, passes through the positioning and fixing plate 20 along the extending direction of the adjusting groove, and is threadedly connected to the positioning and fixing plate 20. The lower end of the adjusting screw is rotatably connected to the measuring body 10, and its upper end passes through the measuring body 10. Rotating the adjusting screw causes the positioning and fixing plate 20 to move up and down.

[0057] It should be noted that in the prior art, the driving structure that enables the positioning and fixing plate 20 to move up and down should also be within the protection scope of this invention.

[0058] This embodiment also provides a method for obtaining the J value, implemented based on the pipe 72 measuring device described above. The method for obtaining the J value includes the following steps:

[0059] The end of the coupling 71 of the oil casing 70 whose J value is to be measured is brought into contact with the positioning and fixing plate 20.

[0060] The length NL of coupling 71 is measured by grating ruler 30, and the length H from the end of coupling 71 to the end of pipe 72 is measured by induction probe 40.

[0061] The J value of the oil casing 70 is calculated based on the length NL of coupling 71 and the length H from the end of coupling 71 to the end of pipe 72.

[0062] This embodiment also provides a method for detecting pipe joints, including the method for obtaining the J value described above, and the detection method further includes the following steps:

[0063] Determine whether the J value is within a preset range:

[0064] If the J value is within the preset range, it indicates that the joint of pipe 72 is qualified;

[0065] If the J value is not within the preset range, it indicates that the joint of pipe 72 is unqualified.

[0066] In some embodiments, when the internal thread of the coupling 71 is an off-center thread, the preset range is 3.18mm to 17.78mm.

[0067] In some embodiments, when the internal thread of the coupling 71 is a round thread, the preset range is 6.35mm to 17.78mm.

[0068] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of multiple components or the interaction between multiple components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0069] In the description of this invention, it should be understood that all terms used to indicate orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as a limitation of this invention.

[0070] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A measuring device for an oil casing joint, characterized in that, The device includes a measuring body (10), a positioning and fixing plate (20), a grating ruler (30), a sensing probe (40), and a terminal (80). The positioning and fixing plate (20) is provided on the side of the measuring body (10). The grating ruler (30) is provided at the end of the positioning and fixing plate (20) away from the measuring body (10). The sensing probe (40) is provided inside the positioning and fixing plate (20). The sensing probe (40) can extend toward the end away from the measuring body (10). Both the grating ruler (30) and the sensing probe (40) are connected to the terminal (80).

2. The oil casing joint measuring device according to claim 1, characterized in that, The terminal includes: Transceiver, used to send and receive signals; The controller is configured to receive a coupling length signal from a grating ruler, which includes a signal for calculating the J value, and a signal from a sensing probe, which includes a signal for calculating the length from the coupling end to the pipe end, and to calculate the J value based on the coupling length and the length from the coupling end to the pipe end.

3. The oil casing joint measuring device according to claim 2, characterized in that, The terminal also includes a display configured to display the coupling length, the length from the coupling end to the pipe end, and the J value.

4. A measuring device for an oil casing joint according to claim 2 or 3, characterized in that, The controller calculates the J value based on a preset formula, which is: J = H - NL / 2; Where H is the length from the end of the coupling to the end of the pipe, and NL is the length of the coupling.

5. The oil casing joint measuring device according to claim 1, characterized in that, It also includes a guide rail (50), on which the bottom of the measuring body (10) is slidably connected.

6. A measuring device for an oil casing joint according to any one of claims 5, characterized in that, The measuring body (10) and the positioning and fixing plate (20) are connected by a driving structure (60), which is used to drive the positioning and fixing plate (20) to move up and down.

7. A method for obtaining the J value, characterized in that, Based on the pipe (72) measuring device according to any one of claims 1-6, the method for obtaining the J value includes the following steps: The end of the coupling (71) of the oil casing (70) abuts against the positioning and fixing plate (20); The length NL of the coupling (71) is measured by a grating ruler (30), and the length H from the end of the coupling (71) to the end of the pipe (72) is measured by a sensing probe (40). The J value of the oil casing (70) is calculated based on the length NL of the coupling (71) and the length H from the end of the coupling (71) to the end of the pipe (72).

8. A method for inspecting pipe joints, characterized in that, Including the method for obtaining the J value as described in claim 7, the detection method includes the following steps: Determine whether the J value is within a preset range: If the J value is within the preset range, it indicates that the joint of the pipe (72) is qualified; If the J value is not within the preset range, it indicates that the joint of the pipe (72) is unqualified.

9. A method for detecting pipe joints according to claim 8, characterized in that, When the internal thread of the coupling (71) is an off-center thread, the preset range is 3.18mm to 17.78mm.

10. A method for detecting pipe joints according to claim 8, characterized in that, When the internal thread of the coupling (71) is a round thread, the preset range is 6.35mm to 17.78mm.

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