Coupling detection device

Abstract

The present invention belongs to the field of detection equipment, and specifically discloses a coupling detection device with high detection accuracy and easy maintenance. The coupling detection device is provided with an assembly channel connected to the installation groove on at least one side of the device body, and the sealing door on the outer end of the assembly channel is detachably connected to the device body, so that it is convenient to install the sensor assembly into the installation groove, or to remove the sensor assembly from the installation groove, so as to repair or replace a new ultrasonic sensor; at the same time, the coupling detection area is mainly surrounded by at least three ultrasonic sensors distributed in a ring array, and the vertical projection of the pipe rod channel is at least partially in the coupling detection area, which not only provides a working channel for the coupling connection assembly, but also can accurately detect the coupling using the ultrasonic imaging principle when the coupling passes through the coupling detection area, and has higher detection accuracy than the existing mechanical detection method.

Description

Technical Field

[0001] The invention belongs to the field of detection equipment, and in particular relates to a coupling detection device. Background Art

[0002] A coupling is a tool for connecting drilling tools. In the process of mining and detecting surface energy, coupling-connected drill pipes, coupling-connected casings and other coupling-connected components are usually required for drilling operations. During drilling operations, operators cannot directly observe the specific position of the coupling from the outside. In order to ensure that the coupling passes through the wellhead safely and avoid accidents at the wellhead and underground operations, a coupling detection device is currently used to detect the position of the coupling.

[0003] Existing coupling detection devices are generally mechanical structures. For example, the Chinese utility model patent with authorization announcement number CN204476399U discloses an oil pipe coupling detection device, which includes a shell, a detection plate assembly, a side door and an operating rod. The shell is provided with an oil pipe channel that runs through its body from top to bottom. Two detection plate assemblies are provided. The two detection plate assemblies are movably placed in the shell, and the two detection plate assemblies are symmetrically located on both sides of the oil pipe channel. Gate shafts are provided on the sides of the two detection plate assemblies away from the oil pipe channel. Two side doors are provided. The two side doors are fixedly placed on both sides of the shell. The sides of the two side doors away from the shell are fixedly provided with support sleeves and bearing sleeves in turn. Two operating rods are provided. The two operating rods pass through the support sleeves, bearing sleeves and side doors from both sides of the shell in turn and are inserted into the gate shaft. The operating rods are connected to the gate shaft.

[0004] Although the above-mentioned oil pipe coupling detection device has the advantages of being unaffected by the environment and being adaptable to a wide range of environments, due to its purely mechanical design, it often has the following problems: 1) low detection accuracy; 2) in actual drilling conditions, due to the large vibration of the equipment during drilling, if the coupling detection device fails, in most cases it is necessary to disassemble and repair the damaged parts in the detection device. The above-mentioned oil pipe coupling detection device has a complex structure, which is not only inconvenient to disassemble and assemble, and difficult to repair, but also the detection accuracy will be further reduced after reassembly; 3) it is impossible to detect possible damage on the coupling. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a coupling detection device which has high detection accuracy and is easy to maintain.

[0006] The technical solution adopted by the present invention to solve the technical problem is: a coupling detection device comprises a device body, in which a vertical pipe rod channel is arranged; and further comprises a sensor assembly, a signal processing module and a display terminal;

[0007] A mounting groove is provided on the channel wall of the pipe-rod channel;

[0008] An assembly channel communicating with the installation groove is provided on at least one side of the device body, and a sealing door is provided on the outer end of the assembly channel, and the sealing door is detachably connected to the device body;

[0009] The sensor assembly has at least one collar detection area, and the collar detection area is mainly surrounded by at least three ultrasonic sensors distributed in a ring array;

[0010] The sensor assembly is arranged in the mounting groove through the assembly passage, and the vertical projection of the pipe rod passage is at least partially located in the coupling detection area;

[0011] The signal input end of the signal processing module is electrically connected to each ultrasonic sensor respectively;

[0012] The display terminal is electrically connected to the signal output end of the signal processing module.

[0013] Furthermore, a sealing ring is provided between the sealing door and the device body.

[0014] Furthermore, an upper connecting structure and a lower connecting structure are respectively provided at the upper and lower ends of the device body.

[0015] Further, the collar detection area is kept coaxial with the pipe-rod passage.

[0016] Furthermore, the sensor assembly includes a sensor mounting seat arranged in the mounting groove, the sensor mounting seat is provided with a sensor mounting groove, and the ultrasonic sensor is arranged in the sensor mounting groove.

[0017] Furthermore, the sensor assembly also includes a sensor pressing plate, which is arranged on the upper side of the sensor mounting groove and presses and fixes the ultrasonic sensor.

[0018] Furthermore, assembly channels are provided on two corresponding sides of the device body;

[0019] The sensor mounting seat comprises two symmetrical mounting seat modules, and the two mounting seat modules are respectively arranged in the mounting groove through two assembly channels and spliced ​​together.

[0020] Furthermore, the mounting seat module and the corresponding sealing door are an integrated structure.

[0021] Furthermore, the ultrasonic sensor is electrically connected to the signal input terminal of the signal processing module via a cable, and a wire passing structure for the cable to pass through is provided in the device body and / or the sealed door.

[0022] Furthermore, the wire-passing structure includes a wire-passing channel that connects the sensor installation slot with the outside, a sealing member is arranged in the wire-passing channel, and an adjusting member capable of pressing the sealing member is arranged at the outer end of the wire-passing channel;

[0023] One end of the cable is electrically connected to the ultrasonic sensor, and the other end of the cable passes through the seal and the adjustment member in sequence and is electrically connected to the signal input end of the signal processing module, and the portion of the cable passing through the seal is encapsulated in the seal.

[0024] The beneficial effects of the present invention are as follows: the coupling detection device opens an assembly channel connected to the installation groove on at least one side of the device body, and the sealing door on the outer end of the assembly channel is detachably connected to the device body, so that it is convenient to install the sensor assembly into the installation groove, or remove the sensor assembly from the installation groove, so as to repair or replace a new ultrasonic sensor; at the same time, the coupling detection area is mainly surrounded by at least three ultrasonic sensors distributed in a circular array, and the vertical projection of the pipe rod channel is at least partially in the coupling detection area, which not only provides a working channel for the coupling connection type component, but also can accurately detect the coupling using the ultrasonic imaging principle when the coupling passes through the coupling detection area, which has higher detection accuracy than the existing mechanical detection method. In addition, the ultrasonic sensor can also perform ultrasonic flaw detection on the coupling and the drill rod or casing connected to the coupling. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the implementation structure of the present invention;

[0026] Figure 2 is an axonometric cross-sectional view of the main body of the device in the present invention;

[0027] Figure 3 It is a schematic cross-sectional structural diagram of the device body in the present invention;

[0028] Figure 4 yes Figure 3 3D axonometric drawing;

[0029] Figure 5 is a three-dimensional exploded view of the mounting seat module of the present invention;

[0030] Marked in the figure are: device body 100, pipe rod channel 110, installation groove 120, assembly channel 130, sealing door 140, sealing ring 150, upper connecting structure 160, lower connecting structure 170, wire passing structure 180, wire passing channel 181, sealing member 183, adjusting member 184, sensor assembly 200, coupling detection area 210, ultrasonic sensor 220, cable 230, sensor mounting seat 240, sensor mounting groove 241, mounting seat module 242, sensor pressure plate 250, signal processing module 300, display terminal 400. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings.

[0032] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "inside", "outside", "upper", "lower", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description, and do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention; the terms "multiple" or "multiple roots" refer to more than two or more than two roots; the expression "mainly surrounded by..." is interpreted as also containing structural components not mentioned in the sentence; "and / or" is only a description of the association relationship of the associated objects, indicating that there can be three relationships, for example: A and / or B, which can indicate: A exists alone, A and B exist at the same time, and B exists alone. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0033] Combination Figure 1 and Figure 2 As shown, the coupling detection device includes a device body 100, in which a vertical pipe rod channel 110 is provided; and further includes a sensor assembly 200, a signal processing module 300 and a display terminal 400;

[0034] A mounting groove 120 is provided on the channel wall of the pipe rod channel 110;

[0035] An assembly channel 130 communicating with the mounting groove 120 is provided on at least one side of the device body 100, and a sealing door 140 is provided on the outer end of the assembly channel 130, and the sealing door 140 is detachably connected to the device body 100;

[0036] The sensor assembly 200 has at least one collar detection area 210, and the collar detection area 210 is mainly surrounded by at least three ultrasonic sensors 220 distributed in a ring array; the ultrasonic sensor 220 is usually composed of a piezoelectric chip, which can both emit and receive ultrasonic waves;

[0037] The sensor assembly 200 is disposed in the mounting groove 120 through the assembly passage 130 , and the vertical projection of the pipe rod passage 110 is at least partially located in the coupling detection area 210 ;

[0038] The signal input end of the signal processing module 300 is electrically connected to each ultrasonic sensor 220;

[0039] The display terminal 400 is electrically connected to the signal output terminal of the signal processing module 300 ; the display terminal 400 is a display device, which can be of various types, such as a liquid crystal display, a touch screen, and the like.

[0040] The coupling detection device is provided with an assembly channel 130 communicating with the mounting groove 120 on at least one side surface of the device body 100, and a sealing door 140 on the outer end of the assembly channel 130 is detachably connected to the device body 100. When the sensor assembly 200 needs to be installed into the mounting groove 120 or the sensor assembly 200 needs to be removed from the mounting groove 120, the sealing door 140 is removed and the sensor assembly 200 can be installed or removed through the assembly channel 130. This is very convenient and easy to repair or replace with a new ultrasonic sensor 200.

[0041] At the same time, the coupling detection area 210 is mainly surrounded by at least three ultrasonic sensors 220 distributed in a circular array, and the vertical projection of the pipe rod channel 110 is at least partially located in the coupling detection area 210, which not only provides a working channel for the coupling connection assembly, but also can accurately detect the coupling using the ultrasonic imaging principle when the coupling passes through the coupling detection area 220. The specific detection process is: the ultrasonic sensor 220 converts the electrical signal into ultrasonic waves and emits them toward the coupling detection area 210. When the coupling passes through the coupling detection area 210, the ultrasonic waves are reflected to a corresponding degree and received by the ultrasonic sensor 220. The ultrasonic sensor 220 then converts the received ultrasonic waves into electrical signals and feeds them back to the signal processing module 300, which is processed into image information by the signal processing module 300 and then sent to the display terminal 400 to generate a display image. Among them, the degree of reflection of the coupling to the ultrasonic wave is usually determined by its material, size and other factors. The computer control program involved in the determination of the degree of reflection of the coupling to the ultrasonic wave, the control instructions and the signal processing, the specific structure of the signal processing module 300, etc. all belong to the prior art and are not repeated here.

[0042] In addition, the ultrasonic sensor 220 can also perform ultrasonic flaw detection on the coupling and the drill pipe or casing connected to the coupling; the principle of ultrasonic flaw detection is: to use the difference in acoustic properties of the material and its defects to reflect the ultrasonic propagation waveform and the energy change of the penetration time to detect internal defects of the material; the specific process of ultrasonic flaw detection belongs to the existing technology and will not be repeated here.

[0043] Among them, the device body 100 is the main component of the coupling detection device, which is mainly used to be installed and connected with other equipment components of the downward exploration construction work, so that the coupling detection device can be assembled to the position where the coupling position needs to be detected, and the coupling can be effectively detected under the premise of ensuring the construction pressure.

[0044] The pipe-rod passage 110 is a vertical passage that passes through the device body 100 from top to bottom, and can be used for the coupling connection type assembly to pass through during the downward exploration construction operation.

[0045] The mounting groove 120 is mainly used to mount the sensor assembly 200 , and is usually adapted to the outer contour of the sensor assembly 200 or larger than the outer contour of the sensor assembly 200 .

[0046] The assembly channel 130 is mainly used to install the sensor assembly 200 into the installation groove 120 from the outside, and its structure is mainly to facilitate the passage of the sensor assembly 200.

[0047] The sealing door 140 is mainly used to close the assembly channel 130 to ensure that the pressure in the pipe rod channel 110 meets the requirements during the exploration operation; the sealing door 140 usually also has a clamping structure to clamp and fix the sensor assembly 200 in the installation groove 120. The sealing door 140 can be detachably connected to the device body 100 in various ways, such as: connected by a connector, connected by a snap-fit ​​or threaded connection, etc. Figure 2 In the embodiment, the sealing door 140 and the device body 100 are connected together by a plurality of screws.

[0048] In order to ensure the sealing of the device body 100, as Figure 2 As shown, a sealing ring 150 is provided between the sealing door 140 and the device body 100. The sealing ring 150 is generally provided with a structure that surrounds the outer end of the assembly channel 130 for at least one circle; Figure 2 , Figure 3 and Figure 4 As shown, a sealing groove is usually provided on the side of the device body 100, and a sealing ring 150 is inserted into the sealing groove and pressed by the sealing door 140. The sealing ring 150 can be made of a variety of materials, such as metal, plastic, rubber, silicone, etc.

[0049] In order to further facilitate the installation and connection of the device body 100 with other equipment components of the down-drilling construction operation, Figure 2 , Figure 3 and Figure 4 As shown, the upper and lower ends of the device body 100 are respectively provided with an upper connection structure 160 and a lower connection structure 170. The upper connection structure 160 and the lower connection structure 170 can be of various types, such as: connection flanges, threaded connection holes, connection screws, etc. Figure 2 In the embodiment, the upper connection structure 160 is a plurality of connection holes distributed in a ring array.

[0050] The sensor assembly 200 is a component for detecting couplings, which generally includes a plurality of ultrasonic sensors 220 that enclose at least one coupling detection area 210. The vertical projection of the pipe rod channel 110 is at least partially within the coupling detection area 210 to ensure that the coupling-connected components passing through the pipe rod channel 110 can be detected. In order to improve the accuracy of detection, the coupling detection area 210 is preferably coaxial with the pipe rod channel 110, that is, the plurality of ultrasonic sensors 220 that enclose the coupling detection area 210 use the axis of the pipe rod channel 110 as the center line of the annular array.

[0051] In order to facilitate the installation of the ultrasonic sensor 220, Figure 2 and Figure 5 As shown, the sensor assembly 200 includes a sensor mounting seat 240 disposed in the mounting groove 120, a sensor mounting groove 241 is provided on the sensor mounting seat 240, and the ultrasonic sensor 220 is disposed in the sensor mounting groove 241. The structure of the sensor assembly 200 can be various. In order to facilitate disassembly and assembly, it is usually set as a central symmetrical structure, and the sensor mounting seat 240 is preferably a structure with an outer contour of a regular hexagon. The number of sensor mounting grooves 241 is usually equal to the number of ultrasonic sensors 220. Two adjacent sensor mounting grooves 241 are generally separated by a partition, and each ultrasonic sensor 220 is disposed in each sensor mounting groove 241 in a one-to-one correspondence.

[0052] In order to further facilitate the installation and fixing of the ultrasonic sensor 220, as shown in FIG. Figure 5 As shown, the sensor assembly 200 also includes a sensor pressing plate 250, which is arranged on the upper side of the sensor mounting groove 241 and presses and fixes the ultrasonic sensor 220. The sensor pressing plate 250 is generally fixed to the upper end surface or the partition of the sensor mounting seat 240 by screws, bolts and other connecting parts; in order to facilitate wiring, a wire hole can be opened on the sensor pressing plate 250. In order to avoid crushing the ultrasonic sensor 220, a sensor pressing plate 250 made of a flexible or elastic material can be selected, or protective pads can be respectively set at the upper and lower ends of the ultrasonic sensor 220.

[0053] In order to further facilitate the disassembly and assembly of the sensor assembly 200, Figure 2 , Figure 3 and Figure 4 As shown, assembly channels 130 are provided on two corresponding sides of the device body 100;

[0054] The sensor mounting seat 240 includes two symmetrical mounting seat modules 242 . The two mounting seat modules 242 are respectively disposed in the mounting groove 120 through two assembly channels 130 and spliced ​​together.

[0055] The sensor mounting seat 240 composed of two symmetrical mounting seat modules 242 is not only convenient for being respectively arranged in the mounting groove 120 through two assembly channels 130, but also facilitates effective fixation through the pressing force of the two sealing doors 140 after being spliced ​​together, thereby avoiding displacement due to external factors such as collision and vibration during operation, and preventing the detection accuracy of the coupling detection device from being reduced. In addition, the two symmetrical mounting seat modules 242 are also conducive to mutual coordination and positioning, ensuring the detection accuracy of the coupling detection device after the sensor assembly 200 is reinstalled.

[0056] The mounting seat module 242 and the sealing door 140 can be a split structure. However, when the sealing door 140 is removed, there may be a problem of pulling the cable 230 electrically connected to the ultrasonic sensor 220. To avoid breaking the cable 230, a certain length of the cable 230 can usually be reserved in the mounting groove 120 and / or the assembly channel 130. The reserved length is generally based on the fact that the cable 230 will not be pulled after the sealing door 140 is removed and placed properly. To avoid breaking the cable 230, the electrical connection between the ultrasonic sensor 220 and the cable 230 can usually be set as a plug-in connection. In this way, you only need to remove the plug-in end of the cable 230 when removing the sealing door 140 to prevent the cable 230 from being pulled.

[0057] The mounting seat module 242 and the corresponding sealing door 140 can also be an integrated structure, so that the corresponding mounting seat module 242 can be taken out together when the sealing door 140 is removed, and there will be no problem of pulling the cable 230. The mounting seat module 242 and the corresponding sealing door 140 can be connected as a whole by welding, or formed as a whole by a piece of material.

[0058] Specifically, Figure 2 As shown, the ultrasonic sensor 220 is electrically connected to the signal input end of the signal processing module 300 through the cable 230, and a wire passing structure 180 is provided in the device body 100 and / or the sealed door 140 for the cable 230 to pass through. The wire passing structure 180 is mainly used for the cable 230 to pass through the device body 100, and it can be of various types, such as: a wire passing hole, a lead groove, a wire outlet opening, etc. The wire passing structure 180 can be set on the device body 100, or it can be set as Figure 2 The airtight door 140 is provided as in the embodiment, and may also be provided on both the device body 100 and the airtight door 140 .

[0059] On the basis of the above, in order to facilitate the line out and ensure the sealing of the pressure operation, Figure 2As shown, the wire-passing structure 180 includes a wire-passing channel 181 that connects the sensor installation slot 241 with the outside, a sealing member 183 is provided in the wire-passing channel 181, and an adjusting member 184 capable of pressing the sealing member 183 is provided at the outer end of the wire-passing channel 181;

[0060] One end of the cable 230 is electrically connected to the ultrasonic sensor 220 , and the other end of the cable 230 passes through the seal 183 and the adjustment member 184 in sequence and is electrically connected to the signal input end of the signal processing module 300 , and the portion of the cable 230 passing through the seal 183 is encapsulated in the seal 183 .

[0061] Among them, the wire passing channel 181 is a routing channel for the cable 230, which can be of various shapes, preferably a channel with a circular cross-section; in order to facilitate sealing, the wire passing channel 181 preferably includes an inner channel section and an outer channel section with a cross-sectional size larger than the inner channel section, so that it is convenient to set the seal 183 in the outer channel section for compression sealing.

[0062] The seal 183 can form an effective seal in the wire-passing channel 181 to ensure the pressure in the pipe-rod channel 110 during operation; the seal 183 is usually made of elastic materials such as plastic, rubber, and silicone, and the portion of the cable 230 that passes through the seal 183 is generally potted in the seal 183 by potting glue, which not only ensures the sealing performance, but also improves the resistance of this section of the cable 230 to external impact and vibration; the potting glue used is preferably a potting glue that can form an elastomer after curing, such as: silicone gel, so that the potted and cured portion can adaptively expand and contract under the adjustment of the adjustment member 184, thereby ensuring the effectiveness and reliability of the seal.

[0063] The adjusting member 184 is mainly used to adjust the pressing force on the sealing member 183, and then regulate the sealing strength of the sealing member 183 to the wire channel 181 to ensure the sealing performance; the adjusting member 184 can be of various types, such as: a push cylinder, a locking nut, etc., preferably a hollow screw threadedly connected to the outer end of the wire channel 181; the hollow screw has the advantages of simple structure and easy adjustment.

Claims

1. A coupling detection device, comprising a device body (100), wherein a vertical pipe rod passage (110) is provided in the device body (100); the characteristics are: It also includes a sensor assembly (200), a signal processing module (300) and a display terminal (400); A mounting groove (120) is provided on the channel wall of the pipe rod channel (110); An assembly channel (130) communicating with the installation groove (120) is provided on at least one side surface of the device body (100); a sealing door (140) is provided on the outer end of the assembly channel (130); the sealing door (140) is detachably connected to the device body (100); The sensor assembly (200) has at least one collar detection area (210), and the collar detection area (210) is mainly surrounded by at least three ultrasonic sensors (220) distributed in a ring array; The sensor assembly (200) is arranged in the installation groove (120) through the assembly channel (130), and the vertical projection of the pipe rod channel (110) is at least partially located in the coupling detection area (210); The sensor assembly (200) comprises a sensor mounting seat (240) arranged in the mounting groove (120), a sensor mounting groove (241) being formed on the sensor mounting seat (240), and the ultrasonic sensor (220) being arranged in the sensor mounting groove (241); The signal input end of the signal processing module (300) is electrically connected to each ultrasonic sensor (220) respectively; the ultrasonic sensor (220) is electrically connected to the signal input end of the signal processing module (300) via a cable (230); a wire passing structure (180) for the cable (230) to pass through is provided in the device body (100) and / or the sealed door (140); The wire-passing structure (180) comprises a wire-passing channel (181) connecting the sensor installation groove (241) with the outside, a sealing member (183) is provided in the wire-passing channel (181), and an adjusting member (184) capable of pressing the sealing member (183) is provided at the outer end of the wire-passing channel (181); One end of the cable (230) is electrically connected to the ultrasonic sensor (220), and the other end of the cable (230) passes through the sealing member (183) and the adjusting member (184) in sequence and is electrically connected to the signal input end of the signal processing module (300), and the portion of the cable (230) passing through the sealing member (183) is potted in the sealing member (183); The display terminal (400) is electrically connected to the signal output end of the signal processing module (300).

2. The coupling detection device according to claim 1, characterized in that: A sealing ring (150) is provided between the sealing door (140) and the device body (100).

3. The coupling detection device according to claim 1, characterized in that: An upper connecting structure (160) and a lower connecting structure (170) are respectively provided at the upper and lower ends of the device body (100).

4. The coupling detection device according to claim 1, characterized in that: The coupling detection area (210) is coaxial with the pipe shaft passage (110).

5. The coupling detection device according to any one of claims 1 to 4, characterized in that: The sensor assembly (200) further comprises a sensor pressing plate (250), which is arranged on the upper side of the sensor mounting groove (241) and presses and fixes the ultrasonic sensor (220).

6. The coupling detection device according to claim 5, characterized in that: Assembly channels (130) are provided on two corresponding side surfaces of the device body (100); The sensor mounting seat (240) comprises two symmetrical mounting seat modules (242), and the two mounting seat modules (242) are respectively arranged in the mounting groove (120) through two assembly channels (130) and spliced ​​together.

7. The coupling detection device according to claim 6, characterized in that: The mounting seat module (242) and the corresponding sealing door (140) are an integrated structure.

Images