A fully automatic oil pipe inner diameter inspection gauge

Abstract

The present application provides a fully automatic oil pipe inner diameter inspection gauge, wherein one end of the guide structure is threadedly connected to one end of the housing; one end of the guide structure is electrically connected to one end of the automatic power supply structure; a plurality of straightening wheels are installed on the outer peripheral wall of the automatic power supply structure at the same spacing in the circumferential direction; one end of the switch positioning seat is bonded to the other end of the automatic power supply structure; a touch-type micro switch is embedded in the through hole of the switch positioning seat; the operating button of the touch-type micro switch extends out of the housing and can abut against the inner wall of the oil pipe, and the touch-type micro switch can be electrically connected to the automatic power supply structure through a conductive spring; one end of the first drive structure is bonded to the other end of the switch positioning seat; the touch-type micro switch is electrically connected to the first drive structure for controlling the opening or closing of the first drive structure; the second drive structure is installed in the inner cavity of the housing; the touch-type micro switch is electrically connected to the second drive structure. The device is simple to operate and can also reduce the labor intensity of workers.

Description

Technical Field

[0001] The present application relates to the field of oil and gas well operations, and in particular to a fully automatic oil pipe inner diameter inspection gauge. Background Art

[0002] Fuling shale gas field, as the main battlefield of Jianghan Oilfield to maintain oil and gas production, has entered the mid-term development. Pressure drop has a great impact on production. Using gas lift drainage is an important means to increase production. Therefore, pipe inspection is a key link in gas lift drainage. There are about 500 gas wells in Fuling shale gas field, with an average well depth of about 2400-2800 meters. Each well uses about 340-400 pipes. According to the calculation of 200 wells inspected per year, the number of ground pipes inspected is about 80,000 or more. If the inspection is carried out according to the current means, this process alone will waste 2,400 hours of labor per year. Not only is the labor intensity high and the efficiency low, but there is also the possibility of missed inspections. Therefore, Wu Jinong Innovation Studio independently developed a fully automatic tubing inner diameter inspection gauge for the inspection of the inner diameter of new tubing. It is not only safe and reliable to use, but also reduces the labor intensity of workers. After the promotion of the fully automatic tubing inner diameter inspection gauge, only two operators are needed to inspect the tubing of a well, and the tubing inspection of a well can be completed in 40 minutes, which can achieve the same day of moving and lowering the pipe. Therefore, the development and promotion of fully automatic oil pipe inner diameter inspection gauges has great economic and social benefits.

[0003] In oil and gas well operations, in order to prevent the deformation of the oil pipe and the debris contained in the inner wall of the oil pipe from affecting its internal permeability, the inner diameter of each oil pipe must be tested. The traditional method is to use a diameter gauge that is about 2mm smaller than the inner diameter of the oil pipe to pass through the inner hole of the oil pipe. If it can pass smoothly, it is qualified. Since the traditional diameter gauge itself has no driving function, there are three main ways to test the oil pipe: the first is to put the diameter gauge into the inner hole of the oil pipe, use the steam generated by the boiler car as power, and spray the diameter gauge from the insertion end to the other end. The biggest advantage of this method is that it can use the heat of steam to melt the dead oil and wax in the pipe and bring it out with the water vapor, which is beneficial to cleaning the pipe wall. It is most suitable for the original well pipe column and old oil pipes. However, its disadvantages are also obvious. Since its power is the steam generated by the boiler car, when the steam cools into liquid, the liquid will mix with the dissolved oil and flow to the ground to cause environmental pollution. The high temperature and high pressure of steam also pose a great safety hazard, especially the instantaneous impact force of the high pressure ejecting the diameter gauge, which can eject the diameter gauge more than 10 meters away. If no special protection is taken, it will also cause harm to the operator; in addition, the equipment and connecting pipelines need to be placed in a place, and there are certain requirements for the construction site area. The second method is to put the diameter gauge into the inner hole of the oil pipe, and two people lift a long pole to push the diameter gauge from the insertion end to the other end. This method is simple and easy to operate, and the cost is also low; but the biggest disadvantage is that it is labor-intensive, requires a large number of people, and also requires enough space to ensure that there is enough space when the long pole is withdrawn. The third method is to tie a wire rope to one end of the diameter gauge, first pass the wire rope through the inner hole of the oil pipe, and rely on the traction of the wire rope to pull the diameter gauge from the insertion end to the other end. Although these three methods can detect the inner diameter of the oil pipe, they are not only time-consuming and labor-intensive, but may also result in missed detections. Summary of the invention

[0004] One of the purposes of the present application is to provide a fully automatic oil pipe inner diameter inspection gauge, aiming to improve the problem that the existing devices for inspecting the inner diameter of the oil pipe are inconvenient to use and time-consuming and labor-intensive.

[0005] The technical solution of this application is:

[0006] A fully automatic oil pipe inner diameter inspection gauge, comprising:

[0007] Guidance structure;

[0008] A cylindrical outer shell, the outer shell is used to slidably move in the inner cavity of the oil pipe, and one end of the guide structure is threadedly connected to one end of the outer shell;

[0009] An automatic power supply structure, wherein the automatic power supply structure is installed in the inner cavity of the shell, and one end of the guide structure is electrically connected to one end of the automatic power supply structure; a plurality of straightening wheels are installed on the outer peripheral wall of the automatic power supply structure at the same intervals in the circumferential direction, and the straightening wheels extend out of the shell and are used to move on the inner peripheral wall of the oil pipe;

[0010] A switch positioning seat, the switch positioning seat is installed in the inner cavity of the shell, and one end of the switch positioning seat is bonded to the other end of the automatic power supply structure;

[0011] A touch-type micro switch, wherein the touch-type micro switch is embedded in the through hole of the switch positioning seat; the operating button of the touch-type micro switch extends out of the housing and can abut against the inner wall of the oil pipe, and the touch-type micro switch can be electrically connected to the automatic power supply structure through a conductive spring;

[0012] a first driving structure, the first driving structure being installed in the inner cavity of the housing and being slidably disposed on the inner peripheral wall of the oil pipe; one end of the first driving structure being bonded to the other end of the switch positioning seat; the touch-type micro switch being electrically connected to the first driving structure and being used to control the opening or closing of the first driving structure;

[0013] The second driving structure is installed in the inner cavity of the shell and is used to be slidably arranged on the inner circumferential wall of the oil pipe; the touch-type micro switch is electrically connected to the second driving structure and is used to control the opening or closing of the second driving structure.

[0014] As a technical solution of the present application, the guide structure includes a conical guide head, a positioning support, a plurality of guide springs, a positive copper plate, a tightening cap and a limit sleeve; the interior of the conical guide head is hollow, and a positioning hole communicating with the inner cavity is opened in the middle of the large end; the large end of the tightening cap is bonded to the large end of the conical guide head, and the small end is threadedly connected to the inner wall of the shell, and the tightening cap is coaxially arranged with the conical guide head; the limit sleeve is embedded in the tightening cap The guide springs are arranged in the inner cavity of the limiting sleeve, and one end of the positioning support is bonded to the large end of the conical guide head; the positioning support is embedded in the inner cavity of the limiting sleeve, and the outer wall is bonded to the inner circumferential wall of the limiting sleeve, and one end of the positioning support is embedded in the positioning hole; one end of the plurality of guide springs is fixedly connected to the other end of the positioning support, and the other end is connected to the large end of the positive copper plate; the positive copper plate can be slidably arranged in the inner cavity of the limiting sleeve, and the small end is electrically connected to one end of the automatic power supply structure.

[0015] As a technical solution of the present application, the automatic power supply structure includes a battery box and a plurality of batteries electrically connected in sequence; the battery box is installed in the inner cavity of the outer shell and has a mounting through hole axially extending through two opposite ends; the battery is installed in the mounting through hole, and one end is electrically connected to the positive copper plate, and the other end is electrically connected to the conductive spring; a pin is installed on one end of the battery box, and the pin is arranged along the axial direction of the battery box, close to the battery, and in contact with the positive copper plate; a plurality of ribs are distributed on the outer wall of the battery box with the same spacing, and the ribs are arranged along the axial direction of the battery box and extend from one end of the battery box to the other end; a support seat is provided in the middle of the rib plate, the support seat is hollow inside and a positioning opening is opened on the outer wall, and the positioning opening is arranged in a direction parallel to the axial direction of the rib plate; the straightening wheel is installed in the positioning opening, and the straightening wheel moves in a direction parallel to the axial direction of the battery box.

[0016] As a technical solution of the present application, the straightening wheel includes a supporting rubber wheel, a rotating shaft and a rubber wheel support; the rubber wheel support is an annular structure and is installed in the positioning opening; the two ends of the rotating shaft respectively pass through the opposite sides of the rubber wheel support and are connected to the two opposite inner walls of the support seat; the supporting rubber wheel is arranged in the inner cavity of the rubber wheel support and is rotatably installed on the rotating shaft, the outer wall of the supporting rubber wheel extends out of the outer shell and is used to movably walk on the inner circumferential wall of the oil pipe.

[0017] As a technical solution of the present application, the switch positioning seat is hollow inside and has a through-connected top and bottom, and one end is bonded to the other end of the battery box, and the other end is bonded to one end of the first driving structure; a conductive spring that can be electrically connected to the battery is fixedly installed on one end of the switch positioning seat, and the touch-type micro switch is installed in the inner cavity.

[0018] As a technical solution of the present application, the first driving structure includes a first fixing frame, a first connecting shaft, a first reduction motor, two first driving wheels, a first clamping block and a first shock-absorbing spring; one end of the first clamping block is fixedly connected to the other end of the switch positioning seat, and the other end is fixedly installed in the top groove of the first fixing frame; the first fixing frame is arranged in the shell, and one end is bonded to the other end of the switch positioning seat; one end of the first reduction motor is installed in the inner cavity of the first fixing frame through the first connecting shaft, and the first driving wheels are rotatably installed on the two opposite side walls, the first driving wheels pass through the shell and are used to move on the inner wall of the oil pipe; one end of the first shock-absorbing spring is connected to the bottom of the first clamping block, and the other end passes through the through hole at the top of the first fixing frame and is pressed on the top of the first reduction motor; the touch-type microswitch is electrically connected to the first reduction motor for controlling the opening or closing of the first reduction motor.

[0019] As a technical solution of the present application, first openings cooperating with the first driving wheel are provided on opposite sides of the outer shell. The first driving wheel is arranged in the first opening and is used to move movably on the inner wall of the oil pipe and can move in a direction parallel to the axial direction of the outer shell.

[0020] As a technical solution of the present application, the second driving structure includes a second fixed frame, a second connecting shaft, a second reduction motor, two second driving wheels, a second clamping block, a clamping wheel and a second shock-absorbing spring; the second clamping block is fixedly installed in the top groove of the second fixed frame; the second fixed frame is arranged in the outer shell; one end of the second reduction motor is installed in the inner cavity of the second fixed frame through the second connecting shaft, and the second driving wheels are rotatably installed on the two opposite side walls, and the second driving wheel passes through the outer shell and is used to move on the inner wall of the oil pipe; one end of the second shock-absorbing spring is connected to the bottom of the second clamping block, and the other end passes through the opening at the top of the second fixed frame and is clamped on the top of the second reduction motor; the touch-type microswitch is electrically connected to the second reduction motor for controlling the opening or closing of the second reduction motor; the clamping wheel is installed in the limiting groove at the top of the second fixed frame, and extends out of the outer shell and is used to move on the inner wall of the oil pipe.

[0021] As a technical solution of the present application, second openings cooperating with the second driving wheel are provided on opposite sides of the outer shell. The second driving wheel is arranged in the second opening and is used to movably walk on the inner wall of the oil pipe and move in a direction parallel to the axial direction of the outer shell.

[0022] As a technical solution of the present application, the second pressing block and the pressing wheel are spaced apart and located on the same straight line, and the pressing wheel is arranged in a direction parallel to the axial direction of the shell.

[0023] Beneficial effects of this application:

[0024] The fully automatic oil pipe inner diameter inspection gauge of the present application is used to inspect the inner diameter of the oil pipe before the oil and gas well operation. It can not only inspect the inner passability of the oil pipe, but also reduce the labor intensity of the workers. When the fully automatic oil pipe inner diameter inspection gauge is placed in the oil pipe, the touch-type micro switch is pressed by the inner wall of the oil pipe. At this time, the power is turned on, and the first reduction motor drives the two first drive wheels to start moving forward, and the second reduction motor drives the two second drive wheels to start moving forward; during the movement, the fully automatic oil pipe inner diameter inspection gauge always maintains a centered state under the support of the four straightening wheels evenly distributed at the front end; at the same time, since the second damping spring is installed on the upper part of the second reduction motor, the second drive wheel can always be close to the inner wall of the oil pipe under the joint action of the second damping spring and the clamping wheel; when the fully automatic oil pipe inner diameter inspection gauge reaches the end point, the touch-type micro switch is separated from the oil pipe contact and the power is cut off, and the fully automatic oil pipe inner diameter inspection gauge is taken out, thereby completing the detection of the inner diameter of an oil pipe. It can be seen that the fully automatic tubing inner diameter inspection gauge can realize fully automatic inspection of the inner diameter of the tubing before going down to the well; at the same time, the inspection of each well can effectively reduce the well occupation time by 8 hours; in addition, the inspection of the device can count the actual number of tubings in each well and display it in real time; furthermore, the device can measure the length of each tubing, and the measured data can be accumulated and saved. In short, the device has a simple structure, is easy to use, and saves trouble and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A schematic diagram of the connection between the fully automatic oil pipe inner diameter inspection gauge and the oil pipe assembly provided in an embodiment of the present application;

[0027] Figure 2 A schematic diagram of the structure of a fully automatic oil pipe inner diameter inspection gauge provided in an embodiment of the present application;

[0028] Figure 3 A first angle cross-sectional view of a fully automatic oil pipe inner diameter inspection gauge provided in an embodiment of the present application;

[0029] Figure 4A second angle cross-sectional view of the fully automatic oil pipe inner diameter inspection gauge provided in an embodiment of the present application;

[0030] Figure 5 A schematic diagram of a guide structure provided in an embodiment of the present application;

[0031] Figure 6 A schematic diagram of the decomposition of the guide structure provided in the embodiment of the present application;

[0032] Figure 7 A schematic diagram of the connection between the guide structure and the automatic power supply structure provided in the embodiment of the present application;

[0033] Figure 8 A schematic diagram of the connection between the automatic power supply structure and the switch positioning seat provided in the embodiment of the present application;

[0034] Fig. 9 A schematic diagram of the automatic power supply structure provided in the embodiment of the present application;

[0035] Fig.10 A cross-sectional view of the automatic power supply structure provided in an embodiment of the present application;

[0036] Fig.11 A schematic diagram of a partial structure of an automatic power supply structure provided in an embodiment of the present application;

[0037] Fig.12 An exploded schematic diagram of a switch positioning seat provided in an embodiment of the present application;

[0038] Fig.13 A schematic diagram of the connection between the switch positioning seat and the first driving structure provided in an embodiment of the present application;

[0039] Fig.14 A schematic diagram of a first driving structure provided in an embodiment of the present application;

[0040] Fig.15 A schematic diagram of a second driving structure provided in an embodiment of the present application;

[0041] Fig.16 A cross-sectional view of a second driving structure provided in an embodiment of the present application;

[0042] Fig.17 A schematic diagram of a second drive structure provided in an embodiment of the present application;

[0043] Fig.18 A schematic diagram of the connection between the second drive structure and the housing provided in an embodiment of the present application.

[0044] Icons: 1-guide structure; 2-housing; 3-oil pipe; 4-automatic power supply structure; 5-righting wheel; 6-switch positioning seat; 7-touch micro switch; 8-conductive spring; 9-first drive structure; 10-second drive structure; 11-conical guide head; 12-positioning bracket; 13-guide spring; 14-positive copper plate; 15-tightening pressure cap; 16-limiting sleeve; 17-battery box; 18-battery; 19-pin; 20-rib plate; 21-support Support seat; 22-support rubber wheel; 23-rotating shaft; 24-rubber wheel support; 25-first fixed frame; 26-first connecting shaft; 27-first reduction motor; 28-first driving wheel; 29-first clamping block; 30-first opening; 31-second fixed frame; 32-second connecting shaft; 33-second reduction motor; 34-second driving wheel; 35-second clamping block; 36-clamping wheel; 37-second shock-absorbing spring; 38-second opening; 39-back cover. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0046] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0047] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0048] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the inventive product is usually placed when in use. These are only for the convenience of describing the present application 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 should not be understood as a limitation on the present application.

[0049] In addition, in the present application, unless otherwise clearly specified and limited, the first feature being above or below the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being below, below, and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0050] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0051] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "disposed", "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 mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0052] Example:

[0053] Please refer to Figure 1 , with reference Figures 2 to 18The present application provides a fully automatic oil pipe inner diameter inspection gauge, which is used to detect the inner diameter of the oil pipe 3, and mainly includes a guide structure 1, an outer shell 2, a rear cover 39, an automatic power supply structure 4, a first drive structure 9 and a second drive structure 10; wherein the outer shell 2 is a cylindrical structure with openings at both ends, one end of the guide structure 1 is threadedly connected to one end of the outer shell 2, and the rear cover 39 is arranged on the other end of the outer shell 2 through a threaded cover. At the same time, the automatic power supply structure 4 is installed in the inner cavity of the outer shell 2, and one end of the guide structure 1 is electrically connected to one end of the automatic power supply structure 4; a plurality of straightening wheels 5 are installed on the outer peripheral wall of the automatic power supply structure 4 with the same spacing in the circumferential direction, and a part of the straightening wheel 5 can extend out of the outer shell 2 and be used to move movably on the inner peripheral wall of the oil pipe 3; the switch positioning seat 6 is installed in the inner cavity of the outer shell 2, and one end of it is bonded to the other end of the automatic power supply structure 4; the touch-type microswitch 7 is embedded in the through hole of the switch positioning seat 6; the operating button of the touch-type microswitch 7 extends out of the outer shell 2 and can abut against the inner wall of the oil pipe 3, and the touch-type microswitch 7 can be electrically connected to the automatic power supply structure 4 through the conductive spring 8, which is used to connect the power supply of the automatic power supply structure 4. In addition, the first drive structure 9 is installed in the inner cavity of the housing 2 and is used to be slidably arranged on the inner circumferential wall of the oil pipe 3; one end of the first drive structure 9 is bonded to the other end of the switch positioning seat 6; the touch-type micro switch 7 is electrically connected to the first drive structure 9 to control the opening or closing of the first drive structure 9; and the second drive structure 10 is installed in the inner cavity of the housing 2 and is used to be slidably arranged on the inner circumferential wall of the oil pipe 3; the touch-type micro switch 7 is electrically connected to the second drive structure 10 to control the opening or closing of the second drive structure 10; at the same time, the second drive structure 10 is located near the rear cover 39. The first drive structure 9 and the second drive structure 10 are connected in parallel, and both are opened or closed at the same time.

[0054] Furthermore, in the present embodiment, the guide structure 1 comprises a conical guide head 11, a positioning support 12, a plurality of guide springs 13, a positive copper plate 14, a screw-on pressure cap 15 and a limiting sleeve 16; wherein the conical guide head 11 is a conical structure with a hollow interior, and a positioning hole communicating with the inner cavity is provided in the middle of the large end thereof; the large end of the screw-on pressure cap 15 is bonded to the large end of the conical guide head 11, and the small end is connected to the inner wall of one end of the housing 2 by a thread; the limiting sleeve 16 is embedded in the screw-on pressure cap 1 5, and one end is bonded to the large end of the conical guide head 11; the positioning bracket 12 is embedded in the inner cavity of the limiting sleeve 16, and the outer wall is bonded to the inner circumferential wall of the limiting sleeve 16, and one end of the positioning bracket 12 is embedded in the positioning hole; one end of a plurality of guide springs 13 is fixedly connected to the other end of the positioning bracket 12, and the other end is connected to the large end of the positive copper plate 14; the positive copper plate 14 is slidably arranged in the inner cavity of the limiting sleeve 16, and the small end is electrically connected to one end of the automatic power supply structure 4.

[0055] It should be noted that, in this embodiment, the guide structure 1 not only plays a guiding role, but also has the function of conducting the positive electrode of the power supply. Among them, the conical guide head 11 is used to guide the fully automatic oil pipe inner diameter inspection gauge into the interior of the oil pipe 3 to detect its inner diameter; the guide spring 13 is fixed to the positioning bracket 12 by the pin 19, and there are three guide springs 13, which are evenly distributed on the positioning bracket 12 with the same spacing; the positive copper plate 14 is installed in the inner hole of the limit sleeve 16, and the positive copper plate 14 can slide in the limit sleeve 16. The positive copper plate 14 has a step-like structure, that is, it has a large end and a small end. A large end, i.e., a limiting step, is provided on the outer circle, and the positive copper plate 14 is limited in the inner hole step of the limiting sleeve 16 by relying on the elastic force of three springs; during assembly, the three springs are first fixed to the positioning support 12 with pins 19, and then the positive copper plate 14 is placed in the limiting sleeve 16, the positioning support 12 is pressed into the limiting sleeve 16, and glued with glue, the bonded limiting sleeve 16 is pressed into the tightening pressure cap 15, and the conical guide head 11 is glued, thereby completing the assembly of the guide structure 1.

[0056] At the same time, the conical guide head 11, the positioning support 12, the positive copper plate 14, the screw-on pressure cap 15 and the limiting sleeve 16 are all coaxially arranged.

[0057] Furthermore, the automatic power supply structure 4 includes a battery box 17 and a plurality of batteries 18 that are electrically connected in sequence; wherein the battery box 17 is a cylindrical structure with both ends open, and is installed in the inner cavity of the housing 2, and has a mounting through hole that runs through the opposite ends in the axial direction; the plurality of batteries 18 that are electrically connected in sequence are installed in the mounting through hole in the axial direction of the battery box 17, and one end is electrically connected to the positive copper plate 14, and the other end is electrically connected to the conductive spring 8. At the same time, a pin 19 is installed on one end of the battery box 17, and the pin 19 is arranged along the axial direction of the battery box 17 and is located close to the battery 18, and is in contact with the positive copper plate 14. A plurality of ribs 20 are distributed at equal intervals on the outer wall of the battery box 17, and each rib 20 is arranged along the axial direction of the battery box 17 and extends from one end of the battery box 17 to the other end; at the same time, a support seat 21 is provided at the middle position of each rib 20, and each support seat 21 is hollow inside and has a positioning opening on the outer wall, and the positioning opening is arranged in a direction parallel to the axial direction of the rib 20; a straightening wheel 5 is installed in each positioning opening, and the straightening wheel 5 moves in a direction parallel to the axial direction of the battery box 17.

[0058] It should be noted that, in this embodiment, the number of the ribs 20 is four, and the spacing between adjacent ribs 20 is the same. The number of the righting wheels 5 is also four, and the spacing between adjacent righting wheels 5 is also the same. The battery box 17 is an integrated design, which can contain two 18650 batteries, and the installation position of the righting wheel 5 is cleverly designed on the outside.

[0059] Specifically, the straightening wheel 5 includes a supporting rubber wheel 22, a rotating shaft 23 and a rubber wheel support 24; the rubber wheel support 24 is annular in structure and is installed in the positioning opening, the outer peripheral wall of the rubber wheel support 24 is externally connected to the inner peripheral wall of the positioning opening, and it is arranged in the same direction as the axial direction of the rib plate 20; at the same time, the two ends of the rotating shaft 23 respectively pass through the opposite sides of the rubber wheel support 24, and are connected to the opposite two inner side walls of the support seat 21, and the rotating shaft 23 is arranged in a direction perpendicular to the axial direction of the rib plate 20; the supporting rubber wheel 22 is arranged in the inner cavity of the rubber wheel support 24, and is rotatably installed on the rotating shaft 23, the supporting rubber wheel 22 is arranged in a direction parallel to the axial direction of the rib plate 20, and a part of its outer wall extends out of the outer shell 2, and is used to movably walk on the inner peripheral wall of the oil pipe 3.

[0060] Furthermore, in the present embodiment, the switch positioning seat 6 is hollow inside and has a through-connection between the top and the bottom, with one end bonded to the other end of the battery box 17 and the other end bonded to one end of the first driving structure 9; at the same time, a conductive spring 8 electrically connected to the battery 18 is fixedly mounted on one end of the switch positioning seat 6, and a touch-type microswitch 7 is installed in the inner cavity; the operating button of the touch-type microswitch 7 passes through the outer shell 2, and when the fully-automatic oil pipe inner diameter inspection gauge is placed in the oil pipe 3, the touch-type microswitch 7 can be pressed by the inner wall of the oil pipe 3, and the power is turned on at this time.

[0061] Therefore, the control part is mainly supported by two major components, the battery box 17 and the switch positioning seat 6; among them, the top of the battery box 17 is equipped with a pin 19 (that is, the positive pole of the power supply), two 18650 batteries can be installed inside, and four evenly distributed ribs 20 are provided on the outside, and a support seat 21 is provided in the middle of the ribs 20; the supporting rubber wheel 22 is fixed to the rubber wheel holder 24 by the pin 19, and the assembled rubber wheel holder 24 is embedded in the support seat 21, which can not only fix the rubber wheel, but also the protruding outer edge will firmly fix the battery box 17 on the shell 2; at the same time, the conductive spring 8 is the negative pole of the power supply, and is fixed to the end face of the switch positioning seat 6 by the pin 19. After the conductive spring 8 is fixed, it is glued to the end face of the switch positioning seat 6 with glue; the touch-type micro switch 7 is fixed in the switch holder with the pin 19, and then the assembled switch holder is embedded in the switch positioning seat 6 from the preset opening on the switch positioning seat 6.

[0062] Meanwhile, the first driving structure 9 includes a first fixing frame 25, a first connecting shaft 26, a first reduction motor 27, two first driving wheels 28, a first pressing block 29 and a first damping spring; wherein one end of the first pressing block 29 is fixedly connected to the other end of the switch positioning seat 6, and the other end is fixedly installed in the top groove of the first fixing frame 25. In addition, the first fixing frame 25 is arranged in the housing 2, and one end is bonded to the other end of the switch positioning seat 6; one end of the first reduction motor 27 is installed in the inner cavity of the first fixing frame 25 through the first connecting shaft 26, and the first driving wheel 28 is rotatably installed on the opposite side walls, and the first driving wheel 28 passes through the housing 2 and is used to move on the inner wall of the oil pipe 3; one end of the first damping spring is connected to the bottom of the first pressing block 29, and the other end passes through the opening at the top of the first fixing frame 25 and is pressed on the top of the first reduction motor 27; the touch-type micro switch 7 is electrically connected to the first reduction motor 27, and is used to control the opening or closing of the first reduction motor 27. The first fixing frame 25 serves to mount the first reduction motor 27 , and also has a shock absorbing system designed inside it.

[0063] Furthermore, first openings 30 cooperating with the first driving wheel 28 are provided on opposite sides of the outer shell 2. The first driving wheel 28 is arranged in the first opening 30 and is used to move movably on the inner wall of the oil pipe 3 and can move in a direction parallel to the axial direction of the outer shell 2.

[0064] At the same time, the second driving structure 10 includes a second fixing frame 31, a second connecting shaft 32, a second reduction motor 33, two second driving wheels 34, a second clamping block 35, a clamping wheel 36 and a second shock absorbing spring 37; wherein the second clamping block 35 is fixedly installed in the top groove of the second fixing frame 31; the second fixing frame 31 is arranged in the housing 2; one end of the second reduction motor 33 is installed in the inner cavity of the second fixing frame 31 through the second connecting shaft 32, and the second driving wheels 34 are rotatably installed on the opposite side walls, The second driving wheels 34 pass through the outer shell 2 and are used to move movably on the inner wall of the oil pipe 3; one end of the second shock-absorbing spring 37 is connected to the bottom of the second clamping block 35, and the other end passes through the through hole at the top of the second fixed frame 31 and is clamped on the top of the second reduction motor 33; the touch-type micro switch 7 is electrically connected to the second reduction motor 33, and is used to control the opening or closing of the second reduction motor 33; the clamping wheel 36 is installed in the limiting groove at the top of the second fixed frame 31, and extends out of the outer shell 2 and is used to move movably on the inner wall of the oil pipe 3.

[0065] The second fixing frame 31 is used to install the second reduction motor 33, and a damping system is also designed inside the second fixing frame 31. At the same time, the touch-type micro switch 7 controls the opening or closing of the first reduction motor 27 and the second reduction motor 33 at the same time.

[0066] Second openings 38 cooperating with the second driving wheel 34 are provided on opposite sides of the housing 2 . The second driving wheel 34 is disposed in the second openings 38 and is used to movably move on the inner wall of the oil pipe 3 and move in a direction parallel to the axial direction of the housing 2 .

[0067] It should be noted that, in the present embodiment, the second pressing block 35 and the pressing wheel 36 are spaced apart and located on the same straight line, and the pressing wheel 36 is disposed in a direction parallel to the axial direction of the housing 2 .

[0068] The driving part uses two DC all-metal gear dual-axis TT reduction motors (i.e., the first reduction motor 27 and the second reduction motor 33) as power. The first reduction motor 27 can rotate slightly on the first connecting shaft 26; the first damping spring is pressed in, and the first reduction motor 27 drives the two first driving wheels 28 to always be close to the inner wall of the oil pipe 3 under the action of the spring force; the first damping spring is fixed in the preset groove of the upper first fixing frame 25 through the first clamping block 29. The second reduction motor 33 can rotate slightly on the second connecting shaft 32; the second damping spring 37 is pressed in, and the second reduction motor 33 drives the two second driving wheels 34 to always be close to the inner wall of the oil pipe 3 under the action of the spring force; the second damping spring 37 is fixed in the preset groove of the upper second fixing frame 31 through the second clamping block 35.

[0069] It should be noted that the fully automatic oil pipe inner diameter inspection gauge uses a 18650 rechargeable lithium battery 18 as a power source, two TT reduction motors (i.e., the first reduction motor 27 and the second reduction motor 33) as power, and then uses a touch-type micro switch 7 for control, so as to fully automatically detect the inner hole of the new oil pipe 3.

[0070] Specifically, the fully automatic oil pipe inner diameter inspection gauge uses two 3.7V rechargeable 18650 lithium batteries 18 connected in series to form a 7.4V as a power source, with a capacity of 3400mah, which can ensure a battery life of more than 3 hours.

[0071] When the fully-automatic oil pipe inner diameter inspection gauge is put into the oil pipe 3, the touch-type microswitch 7 is pressed by the inner wall of the oil pipe 3. At this time, the power is turned on, and the reduction motor drives the four driving wheels (i.e., two first driving wheels 28 and two second driving wheels 34) to start moving forward; during its walking process, the fully-automatic oil pipe inner diameter inspection gauge always remains in a centered state under the action of the four straightening wheels 5 evenly distributed at the front end; at the same time, a first shock-absorbing spring is installed on the upper part of the first reduction motor 27, and the first driving wheel 28 is always in close contact with the inner wall of the oil pipe 3 under the action of the first shock-absorbing spring; a second shock-absorbing spring 37 is installed on the upper part of the second reduction motor 33, and the second driving wheel 34 is always in close contact with the inner wall of the oil pipe 3 under the action of the second shock-absorbing spring 37 and the clamping wheel 36; when the fully-automatic oil pipe inner diameter inspection gauge reaches the end point, the touch-type microswitch 7 is disengaged and the power is cut off, and the inspection gauge is taken out, thereby completing the detection of the inner diameter of a new oil pipe 3.

[0072] In order to achieve full automation, the touch-type microswitch 7 adopts a pulley pressure rod contact switch. When the fully-automatic oil pipe inner diameter inspection gauge is placed in the inner hole of the oil pipe 3, the pulley of the pulley pressure rod contact switch is pressed and energized, and the first reduction motor 27 and the second reduction motor 33 start to move; when the fully-automatic oil pipe inner diameter inspection gauge reaches the end point, the pulley of the pulley pressure rod contact switch disengages and the power is cut off, so that the first drive wheel 28 and the second drive wheel 34 are powered off to achieve braking.

[0073] In addition, since the fully automatic oil pipe inner diameter inspection gauge is made using 3D modeling technology and 3D printing technology, and is made of polylactic acid (H-[OCHCH3CO]n-OH) (also known as polylactide) material with excellent heat resistance, fast molding speed, strong thermal stability, and biodegradability, it breaks through the traditional processing methods and has a clever design, compact structure, and reliable operation.

[0074] In summary, the fully automatic oil pipe inner diameter inspection gauge of the present application is used to inspect the inner diameter of the oil pipe 3 before oil and gas well operations. It can not only inspect the internal passability of the oil pipe 3, but also reduce the labor intensity of workers. When the fully automatic oil pipe inner diameter inspection gauge is put into the oil pipe 3, the touch-type microswitch 7 is pressed by the inner wall of the oil pipe 3. At this time, the power is turned on, and the first reduction motor 27 drives the two first drive wheels 28 to start moving forward, and the second reduction motor 33 drives the two second drive wheels 34 to start moving forward; during the walking process, the fully automatic oil pipe inner diameter inspection gauge always remains in a centered state under the support of the four straightening wheels 5 evenly distributed at the front end; at the same time, since the second shock-absorbing spring 37 is installed on the upper part of the second reduction motor 33, the second drive wheel 34 can always be close to the inner wall of the oil pipe 3 under the joint action of the second shock-absorbing spring 37 and the clamping wheel 36; when the fully automatic oil pipe inner diameter inspection gauge reaches the end point, the touch-type microswitch 7 breaks away from the contact with the oil pipe 3 and the power is cut off, and the fully automatic oil pipe inner diameter inspection gauge is taken out, thereby completing the detection of the inner diameter of an oil pipe 3. It can be seen that the fully automatic oil pipe inner diameter inspection gauge can realize fully automatic inspection of the inner diameter of the oil pipe 3 before going down the well; at the same time, the inspection of each well can effectively reduce the well occupation time by 8 hours; in addition, the actual number of oil pipes 3 in each well can be counted and displayed in real time through the inspection of the device; furthermore, the device can measure the length of each oil pipe 3, and the measured data can be accumulated and saved. In short, the device has a simple structure, is easy to use, and saves trouble and labor.

[0075] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A fully automatic oil pipe inner diameter inspection gauge, characterized in that: include: Guidance structure; A cylindrical outer shell, the outer shell is used to slidably move in the inner cavity of the oil pipe, and one end of the guide structure is threadedly connected to one end of the outer shell; An automatic power supply structure, wherein the automatic power supply structure is installed in the inner cavity of the shell, and one end of the guide structure is electrically connected to one end of the automatic power supply structure; a plurality of straightening wheels are installed on the outer peripheral wall of the automatic power supply structure at the same intervals in the circumferential direction, and the straightening wheels extend out of the shell and are used to move on the inner peripheral wall of the oil pipe; A switch positioning seat, the switch positioning seat is installed in the inner cavity of the shell, and one end of the switch positioning seat is bonded to the other end of the automatic power supply structure; A touch-type micro switch, wherein the touch-type micro switch is embedded in the through hole of the switch positioning seat; the operating button of the touch-type micro switch extends out of the housing and can abut against the inner wall of the oil pipe, and the touch-type micro switch can be electrically connected to the automatic power supply structure through a conductive spring; a first driving structure, the first driving structure being installed in the inner cavity of the housing and being slidably disposed on the inner peripheral wall of the oil pipe; one end of the first driving structure being bonded to the other end of the switch positioning seat; the touch-type micro switch being electrically connected to the first driving structure and being used to control the opening or closing of the first driving structure; a second driving structure, the second driving structure being installed in the inner cavity of the housing and being slidably disposed on the inner peripheral wall of the oil pipe; the touch-type micro switch being electrically connected to the second driving structure and being used to control the opening or closing of the second driving structure; The guide structure includes a conical guide head, a positioning support, a plurality of guide springs, a positive copper plate, a tightening pressure cap and a limiting sleeve; the interior of the conical guide head is hollow, and a positioning hole communicating with the inner cavity is opened in the middle of the large end; the large end of the tightening pressure cap is bonded to the large end of the conical guide head, and the small end is threadedly connected to the inner wall of the shell, and the tightening pressure cap is coaxially arranged with the conical guide head; the limiting sleeve is embedded in the inner cavity of the tightening pressure cap, and one end is bonded to the large end of the conical guide head; the positioning support is embedded in the inner cavity of the limiting sleeve, and the outer wall is bonded to the inner circumferential wall of the limiting sleeve, and one end of the positioning support is embedded in the positioning hole; one end of the plurality of guide springs is fixedly connected to the other end of the positioning support, and the other end is connected to the large end of the positive copper plate; the positive copper plate can be slidably arranged in the inner cavity of the limiting sleeve, and the small end is electrically connected to one end of the automatic power supply structure on; the automatic power supply structure includes a battery box and a plurality of batteries electrically connected in sequence; the battery box is installed in the inner cavity of the shell and has a mounting through hole axially extending through two opposite ends; the battery is installed in the mounting through hole, and one end is electrically connected to the positive copper plate, and the other end is electrically connected to the conductive spring; a pin is installed on one end of the battery box, and the pin is arranged along the axial direction of the battery box, close to the battery, and in contact with the positive copper plate; a plurality of ribs are distributed on the outer wall of the battery box at the same interval, and the ribs are arranged along the axial direction of the battery box and extend from one end of the battery box to the other end; a support seat is provided in the middle of the rib plate, the support seat is hollow inside and a positioning opening is opened on the outer wall, and the positioning opening is arranged in a direction parallel to the axial direction of the rib plate; the righting wheel is installed in the positioning opening, and the righting wheel moves in a direction parallel to the axial direction of the battery box; The first driving structure includes a first fixing frame, a first connecting shaft, a first reduction motor, two first driving wheels, a first clamping block and a first shock-absorbing spring; one end of the first clamping block is fixedly connected to the other end of the switch positioning seat, and the other end is fixedly installed in the top groove of the first fixing frame; the first fixing frame is arranged in the shell, and one end is bonded to the other end of the switch positioning seat; one end of the first reduction motor is installed in the inner cavity of the first fixing frame through the first connecting shaft, and the first driving wheels are rotatably installed on the two opposite side walls, and the first driving wheels pass through the shell and are used to move on the inner wall of the oil pipe; one end of the first shock-absorbing spring is connected to the bottom of the first clamping block, and the other end passes through the through hole at the top of the first fixing frame and is pressed on the top of the first reduction motor; the touch-type microswitch is electrically connected to the first reduction motor, and is used to control the opening or closing of the first reduction motor; The second driving structure includes a second fixed frame, a second connecting shaft, a second reduction motor, two second driving wheels, a second clamping block, a clamping wheel and a second shock-absorbing spring; the second clamping block is fixedly installed in the top groove of the second fixed frame; the second fixed frame is arranged in the outer shell; one end of the second reduction motor is installed in the inner cavity of the second fixed frame through the second connecting shaft, and the second driving wheels are rotatably installed on the two opposite side walls, and the second driving wheel passes through the outer shell and is used to move on the inner wall of the oil pipe; one end of the second shock-absorbing spring is connected to the bottom of the second clamping block, and the other end passes through the through hole at the top of the second fixed frame and is clamped on the top of the second reduction motor; the touch-type microswitch is electrically connected to the second reduction motor for controlling the opening or closing of the second reduction motor; the clamping wheel is installed in the limiting groove at the top of the second fixed frame, and extends out of the outer shell and is used to move on the inner wall of the oil pipe.

2. The fully automatic oil pipe inner diameter inspection gauge according to claim 1 is characterized in that: The straightening wheel includes a supporting rubber wheel, a rotating shaft and a rubber wheel holder; the rubber wheel holder is annular in structure and is installed in the positioning opening; the two ends of the rotating shaft respectively pass through the opposite sides of the rubber wheel holder and are connected to the opposite inner side walls of the support seat; the supporting rubber wheel is arranged in the inner cavity of the rubber wheel holder and is rotatably installed on the rotating shaft, and the outer wall of the supporting rubber wheel extends out of the outer shell and is used to movably walk on the inner circumferential wall of the oil pipe.

3. The fully automatic oil pipe inner diameter inspection gauge according to claim 1 is characterized in that: The switch positioning seat is hollow inside and has a through-connected top and bottom, and one end is bonded to the other end of the battery box, and the other end is bonded to one end of the first driving structure; a conductive spring electrically connected to the battery is fixedly mounted on one end of the switch positioning seat, and the touch-type micro switch is installed in the inner cavity.

4. The fully automatic oil pipe inner diameter inspection gauge according to claim 1 is characterized in that: First openings cooperating with the first driving wheel are provided on opposite sides of the shell. The first driving wheel is arranged in the first opening and is used to move movably on the inner wall of the oil pipe and can move in a direction parallel to the axial direction of the shell.

5. The fully automatic oil pipe inner diameter inspection gauge according to claim 1 is characterized in that: Second openings cooperating with the second driving wheel are provided on opposite sides of the shell. The second driving wheel is arranged in the second opening and is used to move movably on the inner wall of the oil pipe and move in a direction parallel to the axial direction of the shell.

6. The fully automatic oil pipe inner diameter inspection gauge according to claim 1 is characterized in that: The second pressing block and the pressing wheel are spaced apart and located on the same straight line, and the pressing wheel is arranged in a direction parallel to the axial direction of the housing.

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