CN113833455A - Portable wellhead oil pipe damage detection device - Google Patents
Portable wellhead oil pipe damage detection device Download PDFInfo
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- CN113833455A CN113833455A CN202111436141.4A CN202111436141A CN113833455A CN 113833455 A CN113833455 A CN 113833455A CN 202111436141 A CN202111436141 A CN 202111436141A CN 113833455 A CN113833455 A CN 113833455A
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/002—Survey of boreholes or wells by visual inspection
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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Abstract
The application discloses portable well head oil pipe damage detection device belongs to well head oil pipe damage detection area. The fixed slide rail, the control signal rail, the power supply rail and the slide groove of the device are sequentially arranged on the inner wall of the outer shell barrel in the circumferential direction along the axial direction of the outer shell barrel and are mutually parallel; the rotating part of the driving mechanism is clamped in the sliding groove and can rotate relative to the sliding groove; one end of the flat panel detector, one end of the X-ray machine and one end of the first wireless transmission module are fixed with the rotating part, the other end of the first wireless transmission module is connected with the fixed sliding rail in a sliding mode, the back face of the flat panel detector is electrically connected with the power supply rail, and the back face of the X-ray machine is also connected with the control signal rail; the flat panel detector and the X-ray machine are positioned at opposite positions on the inner wall of the shell cylinder; the power supply and the main control board are arranged on the outer wall of the shell barrel and connected with the main control board, the power supply is also connected with the X-ray machine and the driving mechanism, and the main control board is also connected with the X-ray machine, the driving mechanism and the upper computer; the upper computer and the flat panel detector are respectively connected with the first wireless transmission module. This application can detect and portable to the oil pipe damage.
Description
Technical Field
The application relates to a well head oil pipe damage detects technical field, especially relates to a portable well head oil pipe damage detection device.
Background
In the long-term oil exploitation process, outlet valves, safety valves, oil pipes and the like of wellhead equipment can be damaged by abrasion, corrosion, cracks and the like in different degrees due to the fact that media exist outside and inside the outlet valves, the safety valves, the oil pipes and the like, and the pressure bearing capacity of the outlet valves, the safety valves, the oil pipes and the like is reduced. If the oil is not treated in time, the oil pipe can leak or even burst in serious conditions, so that the serious production safety problem occurs, and the oil extraction cost is greatly increased. In order to prevent the occurrence of danger, the regular safety detection of the pipeline is very important. However, at present, no portable device capable of detecting damage of the oil pipe exists.
Disclosure of Invention
The embodiment of the application provides a portable wellhead oil pipe damage detection device, and solves the problem that no portable device capable of detecting oil pipe damage is available at present.
The embodiment of the invention provides a portable wellhead oil pipe damage detection device which comprises an outer shell barrel, a fixed sliding rail, a control signal rail, a power supply rail, a sliding chute, a flat panel detector, a first wireless transmission module, an X-ray machine, a driving mechanism, a power supply, a main control board and an upper computer, wherein the fixed sliding rail is arranged on the outer shell barrel; the fixed slide rail, the control signal rail, the power supply rail and the sliding chute are sequentially arranged on the inner wall of the outer shell barrel in a circumferential direction and in parallel along the axial direction of the outer shell barrel; the rotating part of the driving mechanism is clamped in the sliding groove and can rotate relative to the sliding groove; one end of each of the flat panel detector, the X-ray machine and the first wireless transmission module is fixed with the rotating part, the other end of each of the flat panel detector, the X-ray machine and the first wireless transmission module is connected with the fixed sliding rail in a sliding mode, the back face of each of the flat panel detector, the X-ray machine and the first wireless transmission module is electrically connected with the power supply rail, and the back face of each of the X-ray machine is also electrically connected with the control signal rail; the flat panel detector and the X-ray machine are positioned at opposite positions of the inner wall of the shell barrel; the power supply and the main control board are both arranged on the outer wall of the shell barrel, the power supply is electrically connected with the main control board, the power supply is also electrically connected with the X-ray machine and the driving mechanism, and the main control board is also electrically connected with the X-ray machine, the driving mechanism and the upper computer; the upper computer and the flat panel detector are respectively electrically connected with the first wireless transmission module.
In one possible implementation manner, the portable wellhead oil pipe damage detection device further comprises a roller assembly, wherein the roller assembly comprises two groups of roller groups; the two groups of roller groups are arranged on the inner walls of the two ends of the outer shell barrel; each group of roller group comprises a plurality of rollers, the rollers are arranged along the circumferential direction of the inner wall of the outer shell barrel at intervals, and the rollers can slide along the axial direction of the oil pipe.
In a possible implementation manner, the roller group further comprises a telescopic component and an elastic component; two telescopic pieces and two elastic pieces are arranged at the position of each roller in a matching manner; the fixed ends of the two telescopic pieces are fixed with the inner wall of the outer shell barrel, and the telescopic ends are respectively connected with two ends of the wheel shaft of the roller one by one; the two telescopic pieces are respectively sleeved with one elastic piece.
In one possible implementation, the housing cylinder comprises a hinge assembly, a locking assembly and two half cylinders divided by a plane in which the axis of the housing cylinder is located; the end faces of one side of the two half cylinders are hinged through the hinge assembly, and the end face of the other side of the two half cylinders is locked through the locking assembly.
In a possible implementation manner, the hinge assembly comprises a hinge, and two leaves of the hinge are respectively fixed to one side of the two half cylinders one by one.
In one possible implementation, the driving mechanism includes a motor, a gear and a rack; the motor is fixed with the inner wall of the shell barrel, the gear is sleeved on an output shaft of the motor, and the gear and the rack are meshed with the rack and are clamped in the sliding groove as rotating pieces and can rotate relative to the sliding groove; one end of each of the flat panel detector, the X-ray machine and the first wireless transmission module is fixed with the side face of the rack; the power supply and the main control board are electrically connected with the motor.
In one possible implementation, the X-ray machine comprises a cathode and an anode; the cathode is made of carbon nano tubes, and the target surface of the anode is made of a tungsten material.
In one possible implementation, a gate is disposed at a distance less than or equal to 500um above the cathode.
In one possible implementation, the power supply includes a power detection module, and the power detection module is configured to detect a system voltage.
In one possible implementation, the flat panel detector comprises an X-ray imaging panel.
One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:
the embodiment of the invention provides a portable wellhead oil pipe damage detection device which comprises an outer shell barrel, a fixed sliding rail, a control signal rail, a power supply rail, a sliding chute, a flat panel detector, a first wireless transmission module, an X-ray machine, a driving mechanism, a power supply, a main control board and an upper computer. The fixed slide rail, the control signal rail, the power supply rail and the slide groove are sequentially arranged on the inner wall of the outer shell barrel in a circumferential direction and in parallel along the axial direction of the outer shell barrel. The rotating part of the driving mechanism is clamped in the sliding groove and can rotate relative to the sliding groove. One end of each of the flat panel detector, the X-ray machine and the first wireless transmission module is fixed with the rotating part, the other end of each of the flat panel detector, the X-ray machine and the first wireless transmission module is connected with the fixed sliding rail in a sliding mode, the back face of each of the flat panel detector, the X-ray machine and the first wireless transmission module is electrically connected with the power supply rail, and the back face of each of the X-ray machine and the first wireless transmission module is also electrically connected with the control signal rail. The flat panel detector and the X-ray machine are positioned at opposite positions of the inner wall of the shell barrel. The power supply and the main control board are arranged on the outer wall of the outer shell barrel and are electrically connected with the main control board, the power supply is also electrically connected with the X-ray machine and the driving mechanism, and the main control board is also electrically connected with the X-ray machine, the driving mechanism and the upper computer. The upper computer and the flat panel detector are respectively and electrically connected with the first wireless transmission module. When carrying out damage detection to oil pipe, locate the portable well head oil pipe damage detection device's of this application shell barrel casing on the well head oil pipe, open the power, the power is for the main control board, X-ray machine and actuating mechanism power supply, actuating mechanism control rotates along the spout and rotates, because flat panel detector, the one end of X-ray machine and first wireless transmission module all is fixed with rotating the piece, the equal sliding connection of the other end is in deciding the slide rail, thereby flat panel detector, X-ray machine and first wireless transmission module can be around the inner wall circumference motion of shell section of thick bamboo, because flat panel detector and X-ray machine are located the relative position department of the inner wall of shell section of thick bamboo, after X-ray machine transmission X ray detected a flaw to oil pipe, X-ray after detecting a flaw can be received by flat panel detector. The detection device not only can well detect the damage of the oil pipe, but also reduces the volume of the detection device and is convenient to carry when the detection device is used for external operation. Meanwhile, the autonomous surrounding detection of the detection device is realized, and the safety of the work of well sites of detection personnel is improved. Through single X-ray machine autogiration shooting, both realized the comprehensive detection to oil pipe damage betterly, practiced thrift the cost simultaneously.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is an expanded view of a portable wellhead tubing damage detection device provided by an embodiment of the present application;
FIG. 2 is a perspective view of a portable wellhead tubing damage detection device provided in an embodiment of the present application;
FIG. 3 is a block diagram of a control system of the portable wellhead tubing damage detection device provided in the embodiments of the present application;
FIG. 4 is a schematic view of the structure of the roller, the telescopic member and the elastic member;
fig. 5 is a working principle diagram of the X-ray machine.
Icon: 1-a shell cylinder; 11-half cylinder; 12-a locking assembly; 121-a fixing sheet; 122-a fixing member; 13-a hinge assembly; 131-a hinge; 2-fixing a slide rail; 3-a control signal rail; 4-power rail; 5-a chute; 6-flat panel detector; 7-a first wireless transmission module; 8-an X-ray machine; 9-a drive mechanism; 91-a motor; 92-a rack; 10-a power supply; 101-a power supply detection module; 102-a power supply module; 20-a main control board; 201-a main controller; 202-a second wireless transmission module; 30-an upper computer; 40-a roller assembly; 401-roller group; 4011-a roller; 4011 a-axle; 4012-a telescoping member; 4013-an elastic member; 50-a cathode; 60-target surface; 70-window.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the present invention. The terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.
Referring to fig. 1 to 3, an embodiment of the present invention provides a portable wellhead oil pipe damage detection device, which includes an outer casing 1, a fixed slide rail 2, a control signal rail 3, a power rail 4, a slide groove 5, a flat panel detector 6, a first wireless transmission module 7, an X-ray machine 8, a driving mechanism 9, a power supply 10, a main control board 20, and an upper computer 30.
Wherein, based on the shape of well head oil pipe, for making detection effect better, general shell section of thick bamboo 1 is cylindricly, and of course shell section of thick bamboo 1 can also be prismatic etc. this application embodiment does not limit to this. The fixed slide rail 2 is fixed with the inner wall of the shell barrel 1. The power supply rail 4 comprises a power supply positive rail and a power supply negative rail parallel to each other.
As shown in fig. 3, the main control board 20 includes a main controller 201 and a second wireless transmission module 202, and the main controller 201 is electrically connected to the second wireless transmission module 202. The main controller 201 may be an STM32 single chip microcomputer. The main controller 201 is used for controlling the X-ray machine 8 to emit rays, receiving a wireless control instruction of the upper computer 30, and controlling the driving mechanism 9 to drive the X-ray machine 8 and the flat panel detector 6 to rotate around the oil pipe to be detected. The first wireless transmission module 7 receives the instruction of the upper computer 30 and transmits the instruction to the flat panel detector 6, and transmits the imaging data of the flat panel detector 6 to the upper computer 30. The flat panel detector 6 is used for generating image data information and transmitting the data information to the upper computer 30 for processing and storage, and the imaging mode of the flat panel detector 6 has the advantages of high imaging speed, thin plate type, clear image and the like. And by using the imaging technology of the flat panel detector, nondestructive imaging of the internal structure of the oil pipe can be realized.
The upper computer 30 is a computer capable of directly sending control instructions, various signal changes are displayed on a screen, various commands can be sent, and the upper computer 30 in the embodiment of the application can be a portable computer, so that the detection device is convenient to carry. The upper computer 30 can be used for controlling the X-ray machine 8 to acquire, process and store imaging data of the flat panel detector 6, and also can be used for sending control commands, receiving and processing X-ray data information and generating damage early warning signals according to the information. The upper computer 30 has high image processing speed and is convenient to store.
The power supply 10 comprises a power supply module 102, the power supply module 102 being capable of supplying operating voltage, electrical energy to the various components of the detection device of the present application, while converting low voltages to tens of kilovolts required by the X-ray machine 8.
The detection methods for pipelines can be roughly divided into two types: destructive testing and nondestructive testing. Since the destructive inspection method may cause damage to the inspected object, a nondestructive inspection method is generally used. Common nondestructive testing methods include magnetic particle testing, eddy current testing, penetrant testing, X-ray testing, and ultrasonic testing. The magnetic powder detection and eddy current detection are mainly used for detecting the defects of the surface and the near surface of a detected workpiece. The penetration detection is generally only used for detecting the opening defects on the surface of the workpiece to be detected. The X-ray detection and the ultrasonic detection can be used for detecting the defects inside and on the surface of the detected workpiece, but the ultrasonic detection generally reflects the damage indirectly through wall thickness measurement, but cannot detect the area with complete surface and serious stress concentration, so that the X-ray detection is more widely applied. The X-ray machine 8 is used for generating X-rays.
As shown in fig. 1, the fixed slide rail 2, the control signal rail 3, the power rail 4 and the slide groove 5 are sequentially disposed on the inner wall of the casing tube 1 along the axial direction of the casing tube 1 in the circumferential direction and in parallel with each other. Specifically, the fixed slide rail 2, the control signal rail 3, the power supply rail 4 and the slide groove 5 are fixed on the inner wall of the housing tube 1. The control signal rail 3 is used for transmitting signals and the power supply rail 4 is used for transmitting power. The control signal rail 3 and the power supply rail 4 are arranged between the fixed slide rail 2 and the slide groove 5, so that electric energy and signal transmission after other parts are installed are facilitated.
The rotating part of the driving mechanism 9 is clamped in the sliding groove 5 and can rotate relative to the sliding groove 5. One end of the flat panel detector 6, one end of the X-ray machine 8 and one end of the first wireless transmission module 7 are fixed with the rotating part, so that the rotating part can drive the flat panel detector 6, the X-ray machine 8 and the first wireless transmission module 7 to rotate together when rotating, namely, the flat panel detector 6, the X-ray machine 8 and the first wireless transmission module 7 can move around the circumferential direction of the inner wall of the shell barrel 1, and therefore the rotation shooting of the detection device is achieved. The other ends of the flat panel detector 6, the X-ray machine 8 and the first wireless transmission module 7 are all connected to the fixed slide rail 2 in a sliding mode, and specifically, the bottom surfaces of the flat panel detector 6, the X-ray machine 8 and the first wireless transmission module 7 are respectively provided with a slide bar and the fixed slide rail 2 in a sliding mode, so that the other ends of the flat panel detector, the X-ray machine 8 and the first wireless transmission module can slide along the fixed slide rail 2. Flat panel detector 6, the back of X-ray machine 8 and first wireless transmission module 7 all is connected with power rail 4 electricity, specifically, flat panel detector 6, the bottom surface of X-ray machine 8 and first wireless transmission module 7 is provided with the brush respectively, the brush is connected with power rail 4 electricity, thereby power rail 4 can give flat panel detector 6, X-ray machine 8 and first wireless transmission module 7 transmission electric energy, the back of X-ray machine 8 still is connected with control signal rail 3 electricity, specifically, 8 bottom surfaces of X-ray machine are provided with the brush, this brush is connected with control signal rail 3 electricity, thereby control signal rail 3 can transmit the signal of X-ray machine 8. The power rail 4 and the control signal rail 3 that this application embodiment provided simple structure can realize that flat panel detector 6, X-ray apparatus 8 and first wireless transmission module 7 rotate moreover, still can obtain electric energy or signal in real time.
The flat panel detector 6 and the X-ray machine 8 are located at the relative positions of the inner wall of the shell barrel 1, so that after damage detection is carried out on an oil pipe by X-rays emitted by the X-ray machine 8, the damage detection can be carried out by the flat panel detector 6, after the X-rays are received by the flat panel detector 6, the flat panel detector 6 can clearly distinguish the non-defective part and the defective part according to the fact that the non-defective part and the defective part have different capabilities of absorbing the rays, specifically, compared with the defective part, the intensity of the rays passing through the non-defective part is relatively low, whether the oil pipe at a wellhead has internal defects can be accurately judged by utilizing the difference of the intensity of penetrating rays, and then image data are transmitted to the upper computer 30 through wireless transmission.
The power supply 10 and the main control board 20 are both arranged on the outer wall of the shell barrel 1, so that the power supply 10 can be conveniently turned on by a detection person and the operation can be conveniently carried out on the main control board 20. The power supply 10 is electrically connected to the main control board 20, and the power supply 10 is also electrically connected to the X-ray machine 8 and the driving mechanism 9, so that the power supply 10 can supply electric power to the main control board 20, the X-ray machine 8, and the motor 91. The main control board 20 is also electrically connected with the X-ray machine 8, the driving mechanism 9 and the upper computer 30, so that the main control board 20 can control the working states of the X-ray machine 8 and the driving mechanism 9. Specifically, the main control board 20 can send voltage status information of the power supply module 102, receive a control command of the upper computer 30, and receive control commands of the rotation speed of the driving mechanism 9, X-ray excitation time, and the like transmitted by the upper computer 30.
The upper computer 30 and the flat panel detector 6 are respectively electrically connected with the first wireless transmission module 7, so that the signal of the flat panel detector 6 can be conveniently transmitted to the upper computer 30 through the first wireless transmission module 7.
The embodiment of the invention provides a portable wellhead oil pipe damage detection device which comprises an outer shell barrel 1, a fixed slide rail 2, a control signal rail 3, a power rail 4, a sliding chute 5, a flat panel detector 6, a first wireless transmission module 7, an X-ray machine 8, a driving mechanism 9, a power supply 10, a main control board 20 and an upper computer 30. The fixed slide rail 2, the control signal rail 3, the power supply rail 4 and the slide groove 5 are sequentially arranged on the inner wall of the outer shell barrel 1 in the circumferential direction and in parallel along the axial direction of the outer shell barrel 1. The rotating part of the driving mechanism 9 is clamped in the sliding groove 5 and can rotate relative to the sliding groove 5. One end of the flat panel detector 6, one end of the X-ray machine 8 and one end of the first wireless transmission module 7 are fixed with the rotating part, the other ends of the flat panel detector and the X-ray machine are connected with the fixed sliding rail 2 in a sliding mode, the back face of the flat panel detector is electrically connected with the power supply rail 4, and the back face of the X-ray machine 8 is further electrically connected with the control signal rail 3. The flat panel detector 6 and the X-ray machine 8 are located at opposite positions of the inner wall of the housing tube 1. The power supply 10 and the main control board 20 are both arranged on the outer wall of the shell barrel 1, the power supply 10 is electrically connected with the main control board 20, the power supply 10 is further electrically connected with the X-ray machine 8 and the driving mechanism 9, and the main control board 20 is further electrically connected with the X-ray machine 8, the driving mechanism 9 and the upper computer 30. The upper computer 30 and the flat panel detector 6 are respectively electrically connected with the first wireless transmission module 7. When carrying out damage detection to oil pipe, locate the well head oil pipe with portable well head oil pipe damage detection device's of this application on shell section of thick bamboo 1 cover, open power 10, power 10 gives main control board 20, X-ray machine 8 and actuating mechanism 9 power supply, actuating mechanism 9 control rotates the piece and rotates along spout 5, because flat panel detector 6, the one end of X-ray machine 8 and first wireless transmission module 7 all is fixed with rotating the piece, the equal sliding connection in fixed slide rail 2 of the other end, thereby flat panel detector 6, X-ray machine 8 and first wireless transmission module 7 can wind the inner wall circumference motion of shell section of thick bamboo 1, because flat panel detector 6 and X-ray machine 8 are located the relative position department of the inner wall of shell section of thick bamboo 1, after X-ray machine 8 transmission X-ray detected a flaw to oil pipe, the X-ray after detecting a flaw can be received by flat panel detector 6. The detection device not only can well detect the damage of the oil pipe, but also reduces the volume of the detection device and is convenient to carry when the detection device is used for external operation. Meanwhile, the autonomous surrounding detection of the detection device is realized, and the safety of the work of well sites of detection personnel is improved. Through the automatic rotation shooting of the single X-ray machine 8, the damage of the oil pipe is comprehensively detected well, and meanwhile, the cost is saved.
Further, as shown in fig. 1 and fig. 2, the portable wellhead tubing damage detection apparatus provided by the embodiment of the present invention further includes a roller assembly 40, and the roller assembly 40 includes two roller groups 401. Two groups of roller sets 401 are arranged on the inner walls of the two ends of the housing tube 1. Each group of roller groups 401 comprises a plurality of rollers 4011, the plurality of rollers 4011 are arranged along the circumferential direction of the inner wall of the outer casing 1 at intervals, specifically, the plurality of rollers 4011 are arranged along the circumferential direction of the inner wall of the outer casing 1 at equal intervals, and the rollers 4011 can slide along the axial direction of the oil pipe. The roller assembly 40 can generate an inward pressure on the outer wall of the oil pipe, so that the oil pipe can be well clamped, and the oil pipe to be detected can be located on the central axis of the detection device. Simultaneously, because gyro wheel 4011 can slide along oil pipe's axis direction to make things convenient for detection device to slide along oil pipe's axis direction, help detection device to examine the axial direction of examining the measuring oil pipe along the segmentation and detect. The rollers 4011 may be three or four … …, and fig. 1 shows a schematic structural diagram that each roller group 401 includes six rollers 4011, i.e., the roller assembly 40 includes twelve rollers 4011.
As shown in fig. 4, the roller set 401 further includes a telescopic member 4012 and an elastic member 4013. Two telescopic parts 4012 and the elastic part 4013 are arranged at the position of each roller 4011 in a matching way; the stiff ends of two expansion pieces 4012 all are fixed with the inner wall of a shell section of thick bamboo 1, and flexible end is connected with the both ends one-to-one of wheel axle 4011a of gyro wheel 4011 respectively. The two telescopic elements 4012 are respectively sleeved with an elastic element 4013. The telescopic part 4012 and the elastic part 4013 are arranged to elastically push the roller 4011 against the oil pipe to be detected, so that the oil pipe to be detected is always located on the central axis of the detection device. Simultaneously, extensible member 4012 gives gyro wheel 4011 with thrust, can make the better cover of gyro wheel 4011 locate and wait to examine the oil pipe and clip oil pipe and do not drop, and elastic component 4013 can give gyro wheel 4011 with reaction force, makes gyro wheel 4011 centre gripping not harm oil pipe by the in-process. Wherein, extensible member 4012 can include the pneumatic cylinder, and the stiff end of pneumatic cylinder is fixed with the inner wall of shell section of thick bamboo 1, and flexible end is connected with roller 4011a of 4011. The telescopic part 4012 may also comprise an electric push rod, a fixed cylinder of the electric push rod is fixed to the inner wall of the housing cylinder 1, and the front end of the push rod is connected to the wheel shaft 4011a of the roller 4011. The elastic member 4013 may include a compression spring, and may also include a hollow cylindrical rubber spring.
As shown in fig. 2, the housing tube 1 comprises a hinge assembly 13, a locking assembly 12 and two half-tubes 11 divided by the plane of the axis of the housing tube 1. The end surfaces of one side of the two half cylinders 11 are hinged through a hinge assembly 13, and the end surfaces of the other side are locked through a locking assembly 12. I.e. in the working state, the two half-cylinders 11 are combined into the housing cylinder 1 through the locking assembly 12 and the hinge assembly 13. When the housing tube 1 is cylindrical, the half tube 11 is semi-cylindrical, and the two semi-cylindrical half tubes 11 can be combined into the cylindrical housing tube 1. The locking assembly 12 comprises a fixing piece 122 and two fixing pieces 121, the fixing piece 122 comprises a butterfly nut and a screw, one fixing piece 121 is fixed on the end face of one end of each of the two half cylinders 11, a screw hole is formed in each fixing piece 121, and the butterfly nut is sleeved after the front end of the screw penetrates through the screw holes in the two fixing pieces 121. The butterfly nut can be conveniently locked manually by a detector, and therefore the shell barrel 1 can be conveniently and rapidly locked in a detection environment. Of course, a set of locking assemblies 12 may be disposed along the axial direction of the detecting device, and for better locking effect, a plurality of sets of locking assemblies 12 may be disposed, as shown in the schematic structural diagram of two sets of locking assemblies 12. The embodiment of the application provides a shell section of thick bamboo 1, through articulated subassembly 13, locking Assembly 12 and two half 11 synthetic shell section of thick bamboos 1, can make things convenient for 1 covers of shell section of thick bamboo to locate on detecting oil pipe, convenient, swift to reduce the check-out time.
With continued reference to fig. 2, the hinge assembly 13 comprises a hinge 131, and the two leaves of the hinge 131 are respectively fixed to one side of the two half-cylinders 11. Hinge 131 is articulated effectual to make the relative rotation of two half section of thick bamboo 11 more nimble, hinge 131 is cheap simultaneously, has reduced detection device's cost, and obtains easily. Through hinge 131 hinge, simple to operate is swift, can make two half section of thick bamboo 11 close when being a shell section of thick bamboo 1 simultaneously, does not have the space in articulated department, makes shell section of thick bamboo 1 seamless joint to it is better to make linking effects such as fixed slide rail 2, control signal rail 3, power rail 4 and spout 5 on two half section of thick bamboos 11.
In practical application, the driving mechanism 9 includes a motor 91, a gear and a rack 92. The motor 91 is fixed with the inner wall of the shell barrel 1, and an output shaft of the motor 91 is sleeved with a gear which is meshed with the rack 92. The rack 92 is a rotating member that is engaged with the slide groove 5 and can rotate relative to the slide groove 5. One end of the flat panel detector 6, one end of the X-ray machine 8 and one end of the first wireless transmission module 7 are fixed with the side face of the rack 92; the power source 10 and the main control board 20 are electrically connected to the motor 91. When the motor 91 works, the output shaft of the motor 91 drives the gear to rotate, and the gear drives the rack 92 to rotate on the chute 5, so as to drive the flat panel detector 6, the X-ray machine 8 and the first wireless transmission module 7 to rotate. The driving mechanism 9 provided by the embodiment of the application has the advantages of simple structure, good driving effect and easiness in implementation.
Optionally, the X-ray machine 8 comprises a cathode 50 and an anode. The cathode 50 is made of carbon nanotubes and the target surface 60 of the anode is made of tungsten material. As shown in fig. 5, the cathode 50 is an emitter of the X-ray machine 8, the anode is a receiver of the X-ray machine 8, and X-rays emitted from the cathode 50 of the X-ray machine 8 are incident on a target surface 60 of the anode, and generated X-rays are emitted from a window 70.
Conventional X-ray generation devices generate a certain number of electrons by directly heating a helical tungsten filament. The high-voltage strong electric field is used for generating high-speed electron current by the energy of high-speed movement of electrons in the vacuum space, and the high-speed electron current impacts the anode target surface 60 to generate X-rays. However, the continued high temperature gradually thins the wire, resulting in a slow weakening of the thermionic emission capability. Under the action of the high-voltage electric field, metal atoms or molecules formed by evaporation collide with high-speed electrons and a small amount of residual gas molecules to be ionized to form positive ions, and the positive ions impact the metal wire to enable the metal wire to be sputtered and even to be blown, so that the service life of the X-ray tube is shortened.
The cathode 50 of the X-ray machine 8 is made of carbon nanotubes,can excite a large amount of electron flow, and under the action of a strong high-voltage electric field, the metal tungsten target surface 60 of the anode is collided at high speed to generate better X rays. Meanwhile, the density of X-rays can be improved, and the detection effect is improved. The carbon nanotube as cathode 50 belongs to cold cathode 50 ray source, and has very high current transmission capacity, high temperature mobility over 105 cm/(V S), and maximum current transmission density up to 1010A/cm2The motion mechanism of electrons in the axial direction belongs to quasi-ballistic transmission, and the performance can be kept stable for a long time at high temperature. The field emission based on the electron tunnel effect is realized by directly applying voltage on the surface of the material so that electrons tunnel out of the surface barrier of the material. Field electron emission is a very efficient electron emission mode, with high emission current density, no lag in emission time, and low power consumption. The detection device of the application uses a cold cathode X-ray imaging technology, does not need to heat a cathode tube, thereby reducing the energy consumption, prolonging the service life, reducing the volume of the X-ray tube, and only needing a plurality of dry batteries to work and being convenient to carry. The damage of the wellhead oil pipe can be detected based on cold cathode X-rays by combining the X-ray imaging principle. In addition, the electron distribution of the field emission cathode is uniform, and the focusing effect is better, so that the focus size can be reduced, and higher spatial resolution can be obtained.
The anode is also called an anode head and comprises a target surface 60 and an anode body which are connected with a high voltage of 30 kV-60 kV. The target surface 60 of the anode is made of a tungsten material. Tungsten has a large atomic number and a high melting point, and is a good anode material. Specifically, the tungsten target 60 and the anode body are welded together, so that the heat dissipation efficiency of the anode can be improved.
Further, a gate is disposed at a distance less than or equal to 500um above the cathode 50. The voltage is connected to the gate, and the magnitude of the emission current of the cathode 50 is regulated and controlled by the voltage, so that the emission current of the cathode 50 can be controlled. Further, in the case where a plurality of stages are provided, the electrodes other than the gate electrode serve as the focusing electrodes.
Optionally, as shown in fig. 3, the power supply 10 includes a power supply detection module 101, and the power supply detection module 101 is configured to detect a system voltage. Specifically, main control unit 201 is connected with power detection module 101 electricity to main control unit 201 control power detection module 101 detects the magnitude of voltage of power module 102, if power module 102 is the battery, main control unit 201 can control power detection module 101 and detect the electric quantity of this battery storage, thereby prevent to take detection device out when detecting, and the electric quantity is not enough to lead to detecting the condition emergence that can't detect. And sending the electric quantity information to the upper computer 30 through the second wireless transmission module 202.
Further, the flat panel detector 6 includes an X-ray imaging panel. When X-rays enter the light-emitting crystal layer, photon energy is converted into visible photons, the visible photons excite the photodiode to generate current, the current forms stored charges in the capacitance integral of the photodiode, the stored charge amount of each pixel is in direct proportion to the incident X-ray photon energy and the incident X-ray photon energy in the corresponding range, and the method has the characteristics of high imaging speed, thin plate shape, clear image and the like.
The portable wellhead oil pipe damage detection device of the embodiment of the application not only can be used for wellhead oil pipes, but also can be applied to detection whether other petrochemical devices have internal defects or not.
The embodiments in the present specification are described in a progressive manner, and the same or similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments.
The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure.
Claims (10)
1. A portable wellhead oil pipe damage detection device is characterized by comprising a housing cylinder, a fixed slide rail, a control signal rail, a power supply rail, a slide groove, a flat panel detector, a first wireless transmission module, an X-ray machine, a driving mechanism, a power supply, a main control board and an upper computer;
the fixed slide rail, the control signal rail, the power supply rail and the sliding chute are sequentially arranged on the inner wall of the outer shell barrel in a circumferential direction and in parallel along the axial direction of the outer shell barrel;
the rotating part of the driving mechanism is clamped in the sliding groove and can rotate relative to the sliding groove;
one end of each of the flat panel detector, the X-ray machine and the first wireless transmission module is fixed with the rotating part, the other end of each of the flat panel detector, the X-ray machine and the first wireless transmission module is connected with the fixed sliding rail in a sliding mode, the back face of each of the flat panel detector, the X-ray machine and the first wireless transmission module is electrically connected with the power supply rail, and the back face of each of the X-ray machine is also electrically connected with the control signal rail;
the flat panel detector and the X-ray machine are positioned at opposite positions of the inner wall of the shell barrel;
the power supply and the main control board are both arranged on the outer wall of the shell barrel, the power supply is electrically connected with the main control board, the power supply is also electrically connected with the X-ray machine and the driving mechanism, and the main control board is also electrically connected with the X-ray machine, the driving mechanism and the upper computer;
the upper computer and the flat panel detector are respectively electrically connected with the first wireless transmission module.
2. The portable wellhead tubing damage detection device of claim 1, further comprising a roller assembly, the roller assembly comprising two sets of roller sets;
the two groups of roller groups are arranged on the inner walls of the two ends of the outer shell barrel;
each group of roller group comprises a plurality of rollers, the rollers are arranged along the circumferential direction of the inner wall of the outer shell barrel at intervals, and the rollers can slide along the axial direction of the oil pipe.
3. The portable wellhead tubing damage detection device of claim 2, wherein the roller train further comprises a telescoping member and a resilient member;
two telescopic pieces and two elastic pieces are arranged at the position of each roller in a matching manner;
the fixed ends of the two telescopic pieces are fixed with the inner wall of the outer shell barrel, and the telescopic ends are respectively connected with two ends of the wheel shaft of the roller one by one;
the two telescopic pieces are respectively sleeved with one elastic piece.
4. The portable wellhead tubing damage detection device of claim 1, wherein the housing barrel comprises a hinge assembly, a locking assembly, and two half-barrels divided by a plane in which an axis of the housing barrel lies;
the end faces of one side of the two half cylinders are hinged through the hinge assembly, and the end face of the other side of the two half cylinders is locked through the locking assembly.
5. The portable wellhead tubing damage detection device of claim 4, wherein the hinge assembly comprises a hinge, and two leaves of the hinge are respectively fixed with one side of each of the two half-cylinders.
6. The portable wellhead tubing damage detection device of claim 1, wherein the drive mechanism comprises a motor, a gear and a rack;
the motor is fixed with the inner wall of the shell barrel, the gear is sleeved on an output shaft of the motor, and the gear is meshed with the rack;
the rack is used as a rotating piece and clamped in the sliding groove and can rotate relative to the sliding groove;
one end of each of the flat panel detector, the X-ray machine and the first wireless transmission module is fixed with the side face of the rack;
the power supply and the main control board are electrically connected with the motor.
7. The portable wellhead tubing damage detection device of claim 1, wherein the X-ray machine comprises a cathode and an anode;
the cathode is made of carbon nano tubes, and the target surface of the anode is made of a tungsten material.
8. The portable wellhead tubing damage detection device of claim 7, wherein a grid is disposed at a distance less than or equal to 500um above the cathode.
9. The portable wellhead tubing damage detection device of claim 1, wherein the power source comprises a power source detection module for detecting a system voltage.
10. The portable wellhead tubing damage detection device of claim 1, wherein the flat panel detector comprises an X-ray imaging panel.
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| CN113833455B (en) | 2022-03-15 |
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