A through device for drilling an inner hole of a tubing for repairing

Abstract

The utility model discloses an inner hole drill through device for oil pipe repair, include: mounting seat, its bottom fixedly connected with water tank, its bottom left side fixedly connected with U -shaped base, its top right side is equipped with the hole of discharging residue, and the hole of discharging residue is used for the water and dirt circulation of discharging, fixed component, it is two, all install in the top of mounting seat, and fixed component is used for the oil pipe of being about to drill through to fix. The utility model discloses a series of structure's setting can through the mode of washing cooperation rotary scraping to the oil pipe of cleaning drilling operation, and can in the cleaning process automatic washing and pushing out the dirt of cleaning, need not personnel subsequent separate washing operation, improve the cleaning efficiency, in addition can collect the dirt of cleaning and to the cleaning water filtration recovery, reduce the waste of water resources.

Description

Technical Field

[0001] This utility model relates to the field of oil pipe repair technology, and in particular to an internal drilling device for oil pipe repair. Background Technology

[0002] In the petroleum industry, tubing is one of the most important tools in oilfield development and production. After prolonged use downhole, some tubing develops a layer of scale on its inner wall due to scaling and corrosion, affecting crude oil extraction operations. Oilfields regularly replace tubing, and these replaced tubings are then repaired by pipe fitting manufacturers. However, cleaning the inner bore of tubing with scale, severe wax buildup, and stubborn stains is extremely difficult, resulting in very low recycling rates. Common methods for cleaning the inner bore of pipe fittings include chemical corrosion and high-pressure water flushing, which are inefficient. Therefore, a search revealed that publication number CN215902379U discloses an inner bore drilling device for tubing repair. The technical solution involves: [The text abruptly ends here, so the translation stops here as well.] One end is equipped with a power box, and a tool holder for clamping the tool holder is located on one side of the upper surface of the base. A clamping assembly is located on the other side. One end of the tool holder has a cutting tool inserted into the inner wall of the oil pipe, and the other end is fixed to the power box, which drives the tool holder to move. The oil pipe is clamped and fixed by the clamping assembly. A circulating water tank is located on one side of the base, connected to the outer end of the tool holder via a high-pressure water pipe. The advantages are: the designed cutting tool can clean stubborn oil or scale adhering to the inner wall of the oil pipe, and the outer side of the cutting head has a wear-resistant layer, extending its service life; it greatly improves the efficiency of cleaning the inner wall of the oil pipe, effectively improves operational safety, and enables the mass production of oil pipe repair and drilling, creating significant benefits and value. The internal drilling device for oil pipe repair disclosed in the above patent still has the following shortcomings during use: 1. It lacks a structure to push out the scraped dirt during the cleaning and drilling process. After scraping and cleaning, some dirt will still adhere to the pipe wall, requiring personnel to rinse it separately afterward, resulting in low cleaning efficiency; 2. It lacks a structure for filtering and recycling the used water during the rinsing process. The rinsed water is discharged directly, causing waste of water resources. In view of the above, this application proposes an internal drilling device for oil pipe repair. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing an internal drilling device for oil pipe repair.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: An internal drilling device for oil pipe repair, comprising: The mounting base has a water tank fixedly connected to its bottom, a U-shaped base fixedly connected to its bottom left side, and a slag discharge hole opened on its top right side for the flow of discharged water and dirt. There are two fixing components, both mounted on top of the mounting base. The fixing components are used to secure the tubing to be drilled. The sludge collection and water filtration recovery mechanism is installed on the bottom right side of the mounting base and connected and fixed to the right side of the water tank. The sludge collection and water filtration recovery mechanism is used to collect the cleaned dirt and filter and recover the water. A support base is located on the left side of the mounting base; The multi-stage electric telescopic rod is embedded and fixed on the top of the mounting base, and its output shaft is fixedly connected to the bottom right side of the support base. The multi-stage electric telescopic rod is used to drive the support base to move laterally. The support tube is rotatably mounted on the right side of the support base; A rotary drive mechanism is installed on the support tube and the support base. The rotary drive mechanism is used to drive the support tube to rotate. The water supply mechanism is installed on the support pipe and the water tank. The water supply mechanism is used to supply water from the water tank into the support pipe. The rotary cleaning and drilling mechanism is installed on the support pipe and is used to rotary drill and clean the oil pipe. The slag-pushing cleaning mechanism is installed on the support pipe and located to the left of the rotary cleaning drilling mechanism. The slag-pushing cleaning mechanism is used to push the cleaned dirt to the right.

[0005] Preferably, the fixing component includes a U-shaped seat fixedly connected to the top of the mounting base. Bolt holes are provided on the front inner wall and the rear inner wall of the U-shaped seat. T-shaped fixing bolts are threaded into the bolt holes and used to press the oil pipe.

[0006] Preferably, the slag collection and water filtration recovery mechanism includes a conical slag guide cover fixedly installed on the bottom right side of the mounting base. A rectangular box is fixedly connected to the bottom of the conical slag guide cover. The left side of the rectangular box is connected to the right side of the water tank and is fixedly connected to the same inclined drain pipe. A support frame is fixedly fitted inside the rectangular box. The support frame is located above the drain pipe. A filter screen plate is movably contacted at its top and is movably clipped into the rectangular box. The filter screen plate is used to filter the flushing water. An L-shaped block is fixedly connected to the right side of the filter screen plate. The rectangular box is movably fitted onto the L-shaped block. A pull hole is opened on the front side of the L-shaped block.

[0007] Preferably, the rotary drive mechanism includes a first gear fixedly sleeved on the support tube, a second gear meshing with the bottom of the first gear, a drive motor fixedly installed on the left side of the support base, and the right end of the output shaft of the drive motor fixedly connected to the left side of the second gear.

[0008] Preferably, the water supply mechanism includes a high-pressure water pump fixedly connected to the left side of the water tank. The extraction end of the high-pressure water pump extends into the water tank and is connected to and fixedly connected to an L-shaped suction pipe. The bottom end of the L-shaped suction pipe is connected to and fixedly connected to a water suction head. The discharge end of the high-pressure water pump is connected to and fixedly connected to a flexible hose. The left end of the flexible hose is connected to and fixedly connected to an L-shaped pipe. A support pipe is rotatably and sealed on the L-shaped pipe. The L-shaped pipe is fixedly installed with the support base.

[0009] Preferably, the rotary cleaning and drilling mechanism includes a hollow drill bit fixed to the right end of the support pipe. The top and bottom of the hollow drill bit are provided with multiple water spray holes communicating with its interior. The water sprayed from the holes flushes the inner wall of the oil pipe. Multiple U-shaped elastic frames are fixedly connected to the top and bottom of the support pipe. Scrapers are provided above and below the support pipe. The side of the scraper closest to the support pipe is fixedly connected to the corresponding U-shaped elastic frames. The elasticity of the U-shaped elastic frames allows the scraper to move. When the scraper enters the oil pipe, the U-shaped elastic frames are compressed, and their elasticity maintains a constant tension on the scraper, ensuring continuous contact between the scraper and the inner wall of the oil pipe, thus improving stability during the scraping process. Two L-shaped guide rods are fixedly connected to the sides of the two scrapers that are close to each other. The support pipe is slidably fitted onto the four L-shaped guide rods, which provide vertical guidance for the corresponding scrapers.

[0010] Preferably, the slag-pushing and cleaning mechanism includes an annular tube, with a connecting pipe fixedly embedded inside the annular tube and extending to the support tube at its bottom end. An elastic rubber sheet is fixedly fitted on the annular tube, with the top and bottom right sides of the elastic rubber sheet being inclined surfaces. A water spray pipe connected to the inside of the annular tube is embedded in the top and bottom right sides of the elastic rubber sheet. The elastic rubber sheet is used to push the scraped dirt to the right. The annular tube is also installed on the outside of the support tube by adhesive bonding.

[0011] Compared with existing technologies, the beneficial effects of this utility model are: 1. By combining the slag-pushing cleaning mechanism, support pipe, multi-stage electric telescopic rod, rotary cleaning and drilling mechanism, water supply mechanism and rotary drive mechanism, the oil pipe can be cleaned and drilled through by flushing and rotary scraping. 2. With the slag-pushing cleaning mechanism, the cleaned dirt can be automatically flushed out during the cleaning process, eliminating the need for subsequent separate flushing operations by personnel and improving cleaning efficiency. 3. The sludge collection and water recycling mechanism can collect the cleaned dirt and filter and recycle the cleaning water, reducing the waste of water resources. This invention, through a series of structural designs, enables the cleaning and drilling of oil pipes by a combination of flushing and rotary scraping. It can also automatically flush out the removed dirt during the cleaning process, eliminating the need for subsequent separate flushing operations by personnel, thus improving cleaning efficiency. In addition, it can collect the cleaned dirt and filter and recycle the cleaning water, reducing water waste. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the internal drilling device for oil pipe repair proposed in this utility model; Figure 2 This is a schematic diagram of the main cross-sectional structure of an internal drilling device for oil pipe repair proposed in this utility model; Figure 3 for Figure 2 A magnified structural diagram of part A in the middle; Figure 4 for Figure 2 A magnified structural diagram of part B in the middle section; Figure 5 for Figure 2 A magnified structural diagram of section C.

[0013] In the diagram: 1. Mounting base; 101. Slag discharge hole; 2. Water tank; 3. Fixing assembly; 4. Slag collection and water filtration recovery mechanism; 401. Rectangular box; 402. Conical slag guide cover; 403. Filter screen plate; 404. Drain pipe; 405. L-shaped block; 406. Support frame; 5. Water supply mechanism; 501. High-pressure water pump; 502. L-shaped suction pipe; 503. Flexible hose; 504. L-shaped pipe; 6. Multi-stage electric telescopic rod; 7. Support pipe; 8. Slag pushing and cleaning mechanism; 801. Annular pipe; 802. Elastic rubber sheet; 803. Water spray pipe; 9. Rotary cleaning and drilling mechanism; 901. Scraper; 902. U-shaped elastic frame; 903. L-shaped guide rod; 904. Hollow drill bit; 905. Water spray hole; 10. Rotary drive mechanism; 1001. First gear; 1002. Second gear; 1003. Drive motor; 11. Support base. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0015] Reference Figure 1 An internal drilling device for oil pipe repair, comprising: Mounting base 1 has a water tank 2 fixedly connected to its bottom. A water inlet pipe is fixedly connected to the rear side of the water tank 2. Water is added to the water tank 2 through the water inlet pipe. A U-shaped base is fixedly connected to its bottom left side. The U-shaped base is used to support the bottom left side of the mounting base 1. A slag discharge hole 101 is opened on its top right side. The slag discharge hole 101 is used for the flow of discharged water and dirt. There are two fixing components 3, both of which are installed on the top of the mounting base 1. The fixing component 3 includes a U-shaped seat that is fixedly connected to the top of the mounting base 1. Bolt holes are provided on the front inner wall and the rear inner wall of the U-shaped seat. T-shaped fixing bolts are threaded in the bolt holes and used to press the oil pipe.

[0016] In this embodiment, when the oil pipe to be drilled is placed on the two U-shaped seats, the corresponding T-shaped clamping bolts can be rotated in the forward direction. The T-shaped clamping bolts move to make close contact with the outside of the oil pipe, and the oil pipe can be fixed by the clamping force of the T-shaped clamping bolts on the oil pipe.

[0017] Furthermore: Reference Figure 1-5 An internal drilling device for oil pipe repair also includes a slag collection and water filtration recovery mechanism 4, which is installed on the bottom right side of the mounting base 1 and connected and fixed to the right side of the water tank 2. The slag collection and water filtration recovery mechanism 4 includes a conical slag guide cover 402 fixedly installed on the bottom right side of the mounting base 1. A rectangular box 401 is fixedly connected to the bottom of the conical slag guide cover 402. A drain pipe 404, inclined and fixedly arranged, is connected to the left side of the rectangular box 401 and the right side of the water tank 2. A support frame 406 is fixedly fitted inside the rectangular box 401, located above the drain pipe 404. The top of the support frame 406 movably contacts a filter screen plate 403, which is movably clipped into the rectangular box 401. The support frame 406 supports the filter screen plate 403. A locking block is fixedly connected to the left side of the filter screen plate 403. A slot is provided on the inner wall of the left side to engage with the locking block. The locking block and the slot cooperate to position the filter plate 403. The filter plate 403 is used to filter the rinsing water. An L-shaped block 405 is fixedly connected to the right side of the filter plate 403. A rectangular box 401 is movably fitted on the L-shaped block 405. A pick-and-place hole is provided on the right side of the rectangular box 401. The inner wall of the pick-and-place hole is in contact with the outer side of the L-shaped block 405. The inner diameter of the pick-and-place hole is larger than the front-to-back width and the top-to-bottom width of the filter plate 403 to facilitate the removal of the filter plate 403. A pull hole is provided on the front side of the L-shaped block 405, through which the L-shaped block 405 can be pulled.

[0018] In this embodiment, the discharged dirt and cleaning water are discharged through the right end of the oil pipe and fall downward through the slag discharge hole 101 into the conical slag guide cover 402, and then into the rectangular box 401. The rinsing water passes through the filter screen plate 403 and is discharged into the water tank 2 through the drain pipe 404. At the same time, the dirt is blocked on the top of the filter screen plate 403, thereby realizing the collection of the cleaned dirt and the recycling of the rinsing water. By filtering and recycling the cleaned water, the waste of water resources is reduced. When cleaning dirt in the future, the L-shaped block 405 can be pulled directly to the right. The L-shaped block 405 drives the filter screen plate 403 to move to the right. The filter screen plate 403 drives the dirt on its top to move to the right and out of the rectangular box 401, thus cleaning the dirt.

[0019] To go even further: An internal drilling device for oil pipe repair also includes a support base 11, which is disposed on the left side of the mounting base 1; The multi-stage electric telescopic rod 6 is embedded and fixed on the top of the mounting base 1. The left end of its output shaft is fixedly connected to the bottom right side of the support base 11. The multi-stage electric telescopic rod 6 is used to drive the support base 11 to move laterally. The top of the mounting base 1 is provided with an embedding groove with an opening on the left side. The inner wall of the embedding groove is fixedly connected to the outer side of the multi-stage electric telescopic rod 6. The support tube 7 is rotatably installed on the right side of the support base 11. The right side of the support base 11 has a first through hole, and a first bearing is fixedly sleeved in the first through hole. The inner side of the inner ring of the first bearing is fixedly connected to the outer side of the support tube 7. The first bearing serves to allow the support tube 7 to be rotatably installed. A rotary drive mechanism 10 is mounted on the support tube 7 and the support base 11; The rotary drive mechanism 10 includes a first gear 1001 fixedly sleeved on the support tube 7, a second gear 1002 meshing with the bottom of the first gear 1001, a drive motor 1003 fixedly mounted on the left side of the support base 11, and the right end of the output shaft of the drive motor 1003 fixedly connected to the left side of the second gear 1002. Water supply unit 5 is installed on support pipe 7 and water tank 2; The water supply mechanism 5 includes a high-pressure water pump 501 fixedly connected to the left side of the water tank 2. The extraction end of the high-pressure water pump 501 extends into the water tank 2 and is connected to and fixedly connected to an L-shaped suction pipe 502. The bottom end of the L-shaped suction pipe 502 is connected to and fixedly connected to a suction head. The high-pressure water pump 501, the L-shaped suction pipe 502, and the suction head cooperate to extract water from the inside of the water tank 2. The discharge end of the high-pressure water pump 501 is connected to and fixedly connected to a flexible hose 503. The left end of the flexible hose 503 is connected to and fixedly connected to an L-shaped pipe. 504, the support tube 7 is rotatably and sealed on the L-shaped tube 504, wherein two sealed bearings are fixedly fitted inside the support tube 7, and the inner side of the inner ring of the sealed bearing is fixedly connected to the outer side of the L-shaped tube 504. The sealed bearings play a role in sealing the rotational installation between the support tube 7 and the L-shaped tube 504. The L-shaped tube 504 is fixedly installed on the support seat 11, wherein a connecting block is fixedly connected between the left side of the L-shaped tube 504 and the support seat 11, and the connecting block is used to support the L-shaped tube 504. The rotary cleaning and drilling mechanism 9 is installed on the support pipe 7. The rotary cleaning and drilling mechanism 9 is used to perform rotary drilling and cleaning of the oil pipe. The rotary cleaning and drilling mechanism 9 includes a hollow drill bit 904 fixed to the right end of the support pipe 7. The hollow drill bit 904 has multiple water spray holes 905 at its top and bottom, which are connected to its interior. The water sprayed from the water spray holes 905 flushes the inner wall of the oil pipe. Multiple U-shaped elastic frames 902 are fixedly connected to the top and bottom of the support pipe 7. Scrapers 901 are located above and below the support pipe 7. The side of the scraper 901 closest to the support pipe 7 is fixedly connected to the corresponding U-shaped elastic frames 902. The elasticity of the U-shaped elastic frames 902 allows the scraper 901 to move. When the scraper 901 enters the oil pipe, the U-shaped elastic frames 902 are compressed, utilizing their elasticity... A constant tension force is applied to the scraper 901, ensuring that the scraper 901 remains in constant contact with the inner wall of the oil pipe, thus improving stability during the scraping process. Two L-shaped guide rods 903 are fixedly connected to the sides of the two scrapers 901 that are close to each other. The support tube 7 is slidably sleeved on the four L-shaped guide rods 903. The support tube 7 has two guide holes at its top and bottom. The outer side of the L-shaped guide rod 903 is covered with a sealing rubber, which makes contact with the inner wall of the corresponding guide hole. The sealing rubber achieves a sealed connection between the L-shaped guide rod 903 and the corresponding guide hole. The L-shaped guide rod 903 provides vertical guidance for the corresponding scraper 901. In this embodiment, when the drive motor 1003 is turned on, its output shaft drives the second gear 1002 to rotate, the second gear 1002 drives the first gear 1001 meshing with it to rotate, the first gear 1001 drives the support tube 7 to rotate, the support tube 7 drives the two scrapers 901 to rotate through multiple loop elastic frames 902, and the support tube 7 also drives the hollow drill bit 904 to rotate. When the multi-stage electric telescopic rod 6 is opened, its output shaft drives the support base 11 to move to the right. The support base 11 drives the support tube 7 to move to the right. The support tube 7 drives the U-shaped elastic frame 902, scraper 901 and hollow drill bit 904 to move to the right. While moving to the right, they are gradually inserted into the oil pipe. After insertion, the two scrapers 901 on the opposite sides and the outer ring of the elastic rubber 802 are in active contact with the inner wall of the oil pipe. The U-shaped elastic frame 902 is in a compressed state. The U-shaped elastic frame 902 in the compressed state uses its elasticity to maintain a constant tension on the scraper 901, so that the scraper 901 can always be in active contact with the inner wall of the oil pipe. During the process of the scraper 901 moving to the right and rotating, the dirt on the inner wall of the oil pipe can be scraped and cleaned. After the multi-stage electric telescopic rod 6 is opened, the high-pressure water pump 501 is turned on to draw water from the inside of the water tank 2 through the L-shaped suction pipe 502 and the suction head. The drawn water is then introduced into the support pipe 7 through the hose 503 and the L-shaped pipe 504. A portion of the water inside the support pipe 7 is sprayed out through the hollow drill bit 904 and multiple water spray holes 905 on it to flush the inside of the oil pipe.

[0020] It should be noted that: the elastic frame 902 is made of rubber, the two scrapers 901 are made of stainless steel, the hose 503 is a telescopic hose, and while the support tube 7 moves to the right, the L-shaped tube 504 also pulls the hose 503 to the right. The length of the hose 503 is longer than the distance that the L-shaped tube 504 pulls the hose 503. The water tank 2 is made of transparent material so that personnel can easily see the water level in the water tank 2. Additionally, the drive motor 1003 can preferably be a 12V DC geared motor of model JGA25-370, and the multi-stage electric telescopic rod 6 can preferably be a small multi-stage push rod of the LA series. In terms of power supply, all electrical components of this device are connected to the local mains power supply and are connected to the power input interface of each device through conventional power distribution devices such as circuit breakers, contactors, and power modules (not marked in the figure) to form a complete power supply circuit. This power supply scheme is a conventional power distribution method for industrial equipment and is a mature and well-known technical means, so it will not be described in detail here.

[0021] Furthermore: An internal drilling device for oil pipe repair also includes a slag-pushing and cleaning mechanism 8, which is installed on a support pipe 7. The slag-pushing and cleaning mechanism 8 includes an annular pipe 801. A connecting pipe that communicates with the interior of the annular pipe 801 is embedded and fixed inside the annular pipe 801. The bottom end of the connecting pipe extends into the support pipe 7. The support pipe 7 is fixedly fitted on the outside of the connecting pipe. The connecting pipe enables communication between the support pipe 7 and the annular pipe 801. An elastic rubber sheet 802 is fixedly fitted on the annular pipe 801. The top right side and the bottom right side of the elastic rubber sheet 802 are both inclined surfaces. A water spray pipe 803 that communicates with the interior of the annular pipe 801 is embedded in the top right side and the bottom right side of the elastic rubber sheet 802. The elastic rubber sheet 802 is used to push the scraped dirt to the right. In addition, the annular pipe 801 is also installed on the outside of the support pipe 7 by adhesive fixation.

[0022] In this embodiment, while the support pipe 7 rotates, it also drives the elastic rubber 802 to rotate through the annular pipe 801. While the support pipe 7 moves to the right, it also drives the elastic rubber 802 to move to the right through the annular pipe 801. The rotating and right-moving elastic rubber 802 can push the dirt scraped out of the oil pipe to the right, so that the dirt can be removed from the oil pipe. At the same time, a part of the water inside the support pipe 7 is also sprayed out sequentially through the connecting pipe, the annular pipe 801 and multiple water spray pipes 803 to rinse the oil pipe after the dirt is scraped. By rinsing after scraping and pushing the dirt by the rightward movement of the elastic rubber 802, the purpose of automatically cleaning out the dirt is achieved during the dirt cleaning process.

[0023] It should be noted that the outer diameter of the elastic rubber 802 is larger than the inner diameter of the tubing. When the elastic rubber 802 is inserted into the tubing, it deforms and contracts inward to fit tightly against the inner wall of the tubing, ensuring stability during the slag pushing process.

[0024] Working principle: When in use, place the oil pipe to be cleaned and drilled on the two fixed components 3 and lock them. Then turn on the drive motor 1003 and the multi-stage electric telescopic rod 6. When the drive motor 1003 is turned on, its output shaft drives the second gear 1002 to rotate. The second gear 1002 drives the first gear 1001 that meshes with it to rotate. The first gear 1001 drives the support tube 7 to rotate. The support tube 7 drives the elastic rubber 802 to rotate through the annular tube 801. At the same time, the support tube 7 also drives the two scrapers 901 to rotate through multiple loop elastic frames 902. The support tube 7 also drives the hollow drill bit 904 to rotate. When the multi-stage electric telescopic rod 6 is opened, its output shaft drives the support base 11 to move to the right. The support base 11 drives the support tube 7 to move to the right. The support tube 7 drives the annular tube 801, elastic rubber 802, U-shaped elastic frame 902, scraper 901 and hollow drill bit 904 to move to the right. While moving to the right, they are gradually inserted into the oil pipe. After insertion, the two scrapers 901 on the side away from each other and the outer ring of the elastic rubber 802 are in active contact with the inner wall of the oil pipe. The U-shaped elastic frame 902 is in a compressed state. The U-shaped elastic frame 902 in the compressed state uses its elasticity to maintain a constant tension on the scraper 901, so that the scraper 901 can always be in active contact with the inner wall of the oil pipe. During the process of the scraper 901 moving to the right and rotating, the dirt on the inner wall of the oil pipe can be scraped and cleaned. At the same time, the rotating and right-moving elastic rubber 802 can push the dirt scraped in the oil pipe to the right, and the rotating and right-moving hollow drill bit 904 can perform drilling work. After the multi-stage electric telescopic rod 6 is opened, the high-pressure water pump 501 is turned on. The high-pressure water pump 501 draws water from the water tank 2 through the L-shaped suction pipe 502 and the suction head. The drawn water is then introduced into the support pipe 7 through the hose 503 and the L-shaped pipe 504. A portion of the water inside the support pipe 7 is sprayed out through the hollow drill bit 904 and multiple water spray holes 905 to flush the inside of the oil pipe. By combining flushing before scraping, the cleaning effect of dirt inside the oil pipe is improved. At the same time, another portion of the water inside the support pipe 7 is sprayed out through the connecting pipe, the ring pipe 801 and multiple water spray pipes 803 to flush the oil pipe after the dirt has been scraped off. By flushing after scraping and pushing the dirt by moving the elastic rubber 802 to the right, the dirt is automatically cleaned out during the cleaning process, eliminating the need for subsequent separate flushing by personnel, thereby improving cleaning efficiency. During the cleaning and drilling process, the expelled dirt and cleaning water are discharged through the right end of the oil pipe and fall downwards through the slag discharge hole 101 into the conical slag guide cover 402, and then into the rectangular box 401. The rinsing water passes through the filter screen plate 403 and is discharged into the water tank 2 through the drain pipe 404. At the same time, the dirt is blocked on the top of the filter screen plate 403, thereby realizing the collection of dirt after cleaning and the recycling of rinsing water. By filtering and recycling the cleaned water, water waste is reduced. When cleaning dirt in the future, the L-shaped block 405 can be pulled directly to the right. The L-shaped block 405 drives the filter screen plate 403 to move to the right. The filter screen plate 403 drives the dirt on its top to move to the right and out of the rectangular box 401, thus cleaning the dirt. After cleaning, the filter screen plate 403 can be reinstalled in the rectangular box 401 for the next use.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An internal drilling device for oil pipe repair, comprising a mounting base (1), characterized in that, include: The mounting base (1) has a water tank (2) fixedly connected to its bottom, a U-shaped base fixedly connected to its bottom left side, and a slag discharge hole (101) opened on its top right side. The fixing components (3) consist of two parts, both of which are mounted on top of the mounting base (1); The sludge collection and water filtration recovery mechanism (4) is installed on the bottom right side of the mounting base (1) and is fixedly connected to the right side of the water tank (2); A support base (11) is located on the left side of the mounting base (1); A multi-stage electric telescopic rod (6) is embedded and fixed on the top of the mounting base (1), and the left end of its output shaft is fixedly connected to the bottom right side of the support base (11). The support tube (7) is rotatably mounted on the right side of the support base (11); A rotary drive mechanism (10) is mounted on the support tube (7) and the support base (11); The water supply mechanism (5) is installed on the support pipe (7) and the water tank (2); A rotary cleaning and drilling mechanism (9) is installed on the support pipe (7); The slag-pushing cleaning mechanism (8) is installed on the support pipe (7) and located to the left of the rotary cleaning drilling mechanism (9).

2. The internal drilling device for oil pipe repair according to claim 1, characterized in that, The fixing component (3) includes a U-shaped seat fixedly connected to the top of the mounting base (1). Bolt holes are provided on the inner walls of the front and rear sides of the U-shaped seat, and T-shaped fixing bolts are threaded into the bolt holes.

3. The internal drilling device for oil pipe repair according to claim 1, characterized in that, The slag collection and water filtration recovery mechanism (4) includes a conical slag guide cover (402) fixedly installed on the bottom right side of the mounting base (1). A rectangular box (401) is fixedly connected to the bottom of the conical slag guide cover (402). The left side of the rectangular box (401) is connected to the right side of the water tank (2) and a drain pipe (404) is fixedly installed at the same angle. A support frame (406) is fixedly fitted inside the rectangular box (401). The support frame (406) is located above the drain pipe (404). Its top is in contact with a filter screen plate (403) that is movably clamped inside the rectangular box (401). An L-shaped block (405) is fixedly connected to the right side of the filter screen plate (403). The rectangular box (401) is movably fitted on the L-shaped block (405). A pull hole is opened on the front side of the L-shaped block (405).

4. The internal drilling device for oil pipe repair according to claim 1, characterized in that, The rotary drive mechanism (10) includes a first gear (1001) fixedly sleeved on the support tube (7), a second gear (1002) meshing at the bottom of the first gear (1001), a drive motor (1003) fixedly installed on the left side of the support base (11), and the right end of the output shaft of the drive motor (1003) fixedly connected to the left side of the second gear (1002).

5. The internal drilling device for oil pipe repair according to claim 1, characterized in that, The water supply mechanism (5) includes a high-pressure water pump (501) fixedly connected to the left side of the water tank (2). The extraction end of the high-pressure water pump (501) extends into the water tank (2) and is connected to and fixedly connected to an L-shaped suction pipe (502). The bottom end of the L-shaped suction pipe (502) is connected to and fixedly connected to a water suction head. The discharge end of the high-pressure water pump (501) is connected to and fixedly connected to a hose (503). The left end of the hose (503) is connected to and fixedly connected to an L-shaped pipe (504). The support pipe (7) is sealed and rotatedly sleeved on the L-shaped pipe (504). The L-shaped pipe (504) is fixedly installed with the support base (11).

6. The internal drilling device for oil pipe repair according to claim 1, characterized in that, The rotary cleaning and drilling mechanism (9) includes a hollow drill bit (904) fixed to the right end of the support pipe (7). The top and bottom of the hollow drill bit (904) are provided with multiple water spray holes (905) that are connected to its interior. The top and bottom of the support pipe (7) are fixedly connected with multiple U-shaped elastic frames (902). The support pipe (7) is provided with scrapers (901) above and below. The side of the scraper (901) close to the support pipe (7) is fixedly connected to the corresponding multiple U-shaped elastic frames (902). The sides of the two scrapers (901) close to each other are fixedly connected with two L-shaped guide rods (903). The support pipe (7) is slidably sleeved on the four L-shaped guide rods (903).

7. The internal drilling device for oil pipe repair according to claim 6, characterized in that, The slag-pushing and cleaning mechanism (8) includes an annular tube (801). A connecting pipe that communicates with the inside of the annular tube (801) is embedded and fixed inside the annular tube (801). The bottom end of the connecting pipe extends into the support tube (7). An elastic rubber sheet (802) is fixedly sleeved on the annular tube (801). The top right side and the bottom right side of the elastic rubber sheet (802) are both inclined surfaces. A water spray pipe (803) that communicates with the inside of the annular tube (801) is embedded in the top right side and the bottom right side of the elastic rubber sheet (802). The annular tube (801) is also installed on the outside of the support tube (7) by adhesive fixing.

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