Pipe washing device

Abstract

The utility model relates to a pipe washing device, which belongs to the technical field of petroleum drilling equipment and comprises a central pipe, a spline housing, an upper connecting nut, a lower connecting nut and a packing sleeve, a plurality of bushings and packings are arranged in the packing sleeve, a packing pad is arranged above the uppermost bushing, a pressing boss is arranged above the packing pad, a pressing plate is sleeved on the pressing boss, and the upper connecting nut and the lower connecting nut are arranged in the central pipe. A plurality of positioning pressing columns are arranged at the bottom of the inner side of the pressing plate and sleeved with elastic rubber sleeves, springs are wrapped in the elastic rubber sleeves, a first sealing groove is formed in the outer side wall of the upper portion of the packing pad, a first sealing ring is arranged in the first sealing groove, and a pressing ring is arranged at the top of the first sealing ring. The top of the packing pad is provided with a plurality of positioning pressing holes communicating with the first sealing groove and allowing the bottoms of the positioning pressing columns to be inserted therein. According to the utility model, elastic initial pressure can be applied to the packing pad, a gap generated by abrasion of a sealing element can be automatically compensated, the replacement period of the sealing element is prolonged, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of oil drilling equipment, specifically relating to a pipe flushing device. Background Technology

[0002] In oil drilling operations, flushing devices are used to connect different equipment and facilitate the transmission of drilling fluids and other media. Their sealing performance, structural strength, and adaptability significantly impact operational efficiency and equipment lifespan. While existing flushing devices can meet basic functions, under complex operating conditions and with prolonged use, the seals are prone to wear and tear, leading to decreased sealing performance and frequent replacements. Furthermore, the disassembly of the connecting devices remains inconvenient, affecting maintenance efficiency. Utility Model Content

[0003] Therefore, it is necessary to provide a pipe-punching device to address the problems of existing technologies.

[0004] To solve the problems of the existing technology, the technical solution adopted by this utility model is as follows:

[0005] A tube punching device includes a central tube, a spline sleeve, an upper connecting nut, a lower connecting nut, and a packing sleeve. The packing sleeve contains multiple bushings and packing. A packing pad is positioned above the uppermost bushing, and a clamping boss is positioned above the packing pad. A clamping plate is fitted onto the clamping boss, and a quick-release bolt is located on the outer side of the clamping plate. The quick-release bolt is connected to a fixing sleeve, which is fixed to the packing sleeve. Multiple positioning pressure posts are located on the inner bottom of the clamping plate, and elastic rubber sleeves are fitted onto the positioning pressure posts. Springs are encased within the elastic rubber sleeves. A sealing groove is located on the upper outer wall of the packing pad, and a sealing ring is located within the sealing groove. A pressure ring is located on the top of the sealing ring. Multiple positioning pressure holes are located on the top of the packing pad, communicating with the sealing groove and allowing the bottom of the positioning pressure posts to be inserted.

[0006] The bottom of the elastic rubber sleeve is provided with a protective protrusion that extends into the positioning pressure hole to prevent the positioning pressure post from directly contacting the packing pad, causing collision wear and collision noise. The bottom and top of the elastic rubber sleeve are provided with positioning bosses, and the top of the packing pad and the bottom of the clamping plate are provided with positioning recesses that cooperate with the positioning bosses to facilitate the positioning and installation of the elastic rubber sleeve.

[0007] Each bushing and packing gasket has multiple arc-shaped sealing grooves on its bottom contact surface with the packing for better sealing. The uppermost bushing has an oil injection hole in the middle of its side wall that connects to its inner hole. An oil injection nozzle is threaded to the outer end of the oil injection hole. The outer side wall of the packing sleeve has a strip-shaped hole that allows the outer end of the oil injection nozzle to pass through and move up and down, which facilitates oil injection and does not affect the micro-movement of the bushing.

[0008] The outer wall of the clamping plate is evenly provided with multiple opening slots, each of which is equipped with a quick-release bolt. The quick-release bolt is equipped with a clamping nut, and a rotating seat is rotatably installed at the lower end of the quick-release bolt. The rotating seat is fixed on the outer wall of the fixed sleeve, which allows the clamping plate to be quickly disassembled for maintenance and installation.

[0009] The fixing sleeve consists of two semi-circular sleeves, which are fastened to the upper outer wall of the packing sleeve by bolts. Each of the two semi-circular sleeves has a positioning boss on its lower inner wall, and the outer wall of the packing sleeve has a positioning groove that mates with the positioning boss. This design allows for easy positioning and installation of the fixing sleeve, as well as convenient disassembly and installation, without hindering the insertion of the lower connecting nut.

[0010] A sealing groove 2 is provided on the outer side of the center hole at the top of the packing gasket. A sealing ring 2 is provided inside the sealing groove 2. A rectangular retaining ring 1 is provided above the sealing ring 2. The outer wall of the rectangular retaining ring 1 contacts the inner wall of the sealing groove 2. A gap is provided between the inner wall of the rectangular retaining ring 1 and the outer wall of the central tube. A clamping sleeve 1 is threadedly connected to the upper part of the sealing groove 2 to clamp the rectangular retaining ring 1. A gap is provided between the inner hole of the clamping sleeve 1 and the outer wall of the central tube. This can seal the gap between the packing gasket and the central tube, preventing slurry from entering the packing gasket, accelerating the wear of the central tube, and affecting its service life. Furthermore, when the sealing ring 2 wears down and affects the seal, the clamping sleeve 1 can be rotated to further compress the sealing ring 2, ensuring the sealing effect and extending the service life of the sealing ring 2.

[0011] The spline sleeve has a sealing groove three on the outer side of the bottom center hole, and a sealing ring three inside the sealing groove three. Below the sealing ring three is a rectangular retaining ring two that fits onto the central tube. There is a gap between the outer wall of the rectangular retaining ring two and the inner wall of the sealing groove three. The inner wall of the rectangular retaining ring two contacts the outer wall of the central tube. The lower part of the sealing groove three is threadedly connected to a clamping screw two that clamps the rectangular retaining ring two. There is a gap between the inner hole of the clamping screw two and the outer wall of the central tube. When the sealing ring three wears down and affects the seal, the clamping screw two can be rotated to further compress the sealing ring three, ensuring the sealing effect and extending the service life of the sealing ring three.

[0012] The advantages of this utility model compared with the prior art are:

[0013] By installing a pressure plate on the outside of the packing gasket, and setting a positioning pressure post, an elastic rubber sleeve, and a spring on the pressure plate, an elastic initial pressure can be applied to the packing gasket. This automatically compensates for the gaps caused by seal wear, extends the seal replacement cycle, and reduces maintenance costs. Furthermore, the positioning pressure post, elastic rubber sleeve, and spring are all located on the upper part of the packing sleeve for easy installation and maintenance. In addition, by setting a sealing groove and a sealing ring on the outside of the packing gasket, the sealing effect is enhanced and the sealing ring is better when the positioning pressure post is pressed down by extending into the sealing groove. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the front sectional view of the present invention;

[0015] Figure 2 This is a top view of the structure of this utility model;

[0016] Figure 3 yes Figure 1 Partial structural diagram Figure 1 ;

[0017] Figure 4 yes Figure 1 Partial structural diagram Figure 2 ;

[0018] Figure 5 This is a three-dimensional structural diagram of the upper connecting nut;

[0019] The numbers on the map are:

[0020] 1. Upper connecting nut; 2. Spline sleeve; 3. Sealing ring three; 4. Center tube; 5. Lower connecting nut; 6. Packing sleeve; 7. Elastic rubber sleeve; 8. Bushing; 9. Packing; 10. Oil injection nozzle; 11. Strip hole; 12. Packing gasket; 13. Quick release bolt; 14. Rectangular retaining ring two; 15. Compression screw two; 16. Sealing ring two; 17. Compression plate; 18. Compression nut; 19. Pressure ring; 20. Fixing sleeve; 21. Sealing ring one; 22. Positioning boss; 23. Sealing groove; 24. Rectangular retaining ring one; 25. Compression screw one; 26. Positioning pressure post; 27. Spring. Detailed Implementation

[0021] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0022] Example 1, Reference Figures 1 to 5A pipe punching device includes a central pipe 4, a spline sleeve 2, an upper connecting nut 1, a lower connecting nut 5, and a packing sleeve 6. The packing sleeve 6 contains multiple bushings 8 and packing 9. A packing pad 12 is positioned above the uppermost bushing 8. A pressing boss is positioned above the packing pad 12. A pressing plate 17 is fitted onto the pressing boss. A quick-release bolt 13 is positioned on the outer side of the pressing plate 17. The quick-release bolt 13 is connected to a fixing sleeve 20, which is fixed to the packing sleeve 6. Multiple positioning pressure posts 26 are positioned at the bottom inner side of the pressing plate 17. An elastic rubber sleeve 7 is fitted onto each positioning pressure post 26, and a spring 27 is encased within the elastic rubber sleeve 7. A sealing groove is positioned on the upper outer wall of the packing pad 12. A sealing ring 21 is positioned within the sealing groove. A pressure ring 19 is positioned on the top of the sealing ring 21. Multiple positioning pressure holes are positioned at the top of the packing pad 12, connecting to the sealing groove and allowing the bottom of the positioning pressure posts 26 to be inserted.

[0023] Working principle: Before operation, the quick-release bolt 13 can be used to apply pressure to the clamping plate 17, giving the elastic rubber sleeve 7 and spring 27 a pre-tightening pressure. At this time, the positioning pressure column 26 will pass through the positioning pressure hole and enter the sealing groove, squeezing the pressure ring 19 and thus squeezing the sealing ring 21, causing the sealing ring 21 to deform and stick tightly to the inner wall of the packing sleeve 6. In addition, the elastic rubber sleeve 7 and spring 27 can automatically compensate for the gap caused by the wear of the packing 9, extend the replacement cycle of the seals, and reduce maintenance costs. During maintenance, loosen the quick-release bolt 13 and then move the clamping plate 17 upward to maintain the elastic rubber sleeve 7, spring 27 and sealing ring 21.

[0024] In Example 2, based on Example 1, the bottom of the elastic rubber sleeve 7 is provided with a protective protrusion that extends into the positioning pressure hole. Both the bottom and top of the elastic rubber sleeve 7 are provided with positioning bosses 22, and the top of the packing pad 12 and the bottom of the clamping plate 17 are provided with positioning recesses that mate with the positioning bosses 22. During installation of the elastic rubber sleeve 7, the bottom positioning bosses 22 of the elastic rubber sleeve 7 can be inserted into the positioning recesses, and the protective protrusion can be inserted into the positioning pressure hole. Then, the positioning pressure post 26 is inserted into the elastic rubber sleeve 7.

[0025] Each bushing 8 and packing gasket 12 has multiple arc-shaped sealing grooves 23 on its bottom contact surface with the packing 9. The uppermost bushing 8 has an oil injection hole in the middle of its side wall that connects to its inner bore. An oil injection nozzle 10 is threaded to the outer end of the oil injection hole. The outer side wall of the packing sleeve 6 has a strip-shaped hole 11 through which the outer end of the oil injection nozzle 10 can pass and move up and down. The outer end of the oil injection nozzle 10 can be connected to a straight-through pressure injection cup.

[0026] Multiple slots are evenly distributed on the outer side wall of the clamping plate 17. Each slot contains a quick-release bolt 13, and a clamping nut 18 is mounted on the quick-release bolt 13. A rotating seat is rotatably mounted on the lower end of the quick-release bolt 13, and the rotating seat is fixed to the outer side wall of the fixing sleeve 20. To loosen the quick-release bolt 13, the clamping nut 18 can be loosened, and then the quick-release bolt 13 can be rotated around the axis of the lower rotating seat, causing the quick-release bolt 13 to disengage from the slot and release the clamping force on the clamping plate 17.

[0027] The fixing sleeve 20 consists of two semi-circular sleeves, which are fastened to the upper outer wall of the packing sleeve 6 by bolts. Each of the two semi-circular sleeves has a positioning boss 22 on its lower inner wall, and a positioning groove that mates with the positioning boss 22 is provided on the outer wall of the packing sleeve 6. After the lower connecting nut 5 is fitted onto the outside of the packing sleeve 6, the two semi-circular sleeves are then fitted onto the upper part of the packing sleeve 6, and the positioning bosses 22 are engaged in the positioning grooves. Finally, the two semi-circular sleeves are fixed with bolts.

[0028] A sealing groove 2 is provided on the outer side of the central hole at the top of the packing gasket 12. A sealing ring 2 16 is provided inside the sealing groove 2. A rectangular retaining ring 1 24 is provided above the sealing ring 2 16. The outer wall of the rectangular retaining ring 1 24 contacts the inner wall of the sealing groove 2. A gap is provided between the inner wall of the rectangular retaining ring 1 24 and the outer wall of the central tube 4. A clamping screw 1 25 is threadedly connected to the upper part of the sealing groove 2 to clamp the rectangular retaining ring 1 24. A gap is provided between the inner hole of the clamping screw 1 25 and the outer wall of the central tube 4. After a period of use, the sealing ring 2 16 will wear. The clamping screw 1 25 can be rotated to press down the rectangular retaining ring 1 24. The rectangular retaining ring 1 24 further squeezes the sealing ring 2 16, making the sealing ring 2 16 fit better against the central tube 4 and the sealing groove 2.

[0029] A sealing groove 3 is provided on the outer side of the bottom center hole of the spline sleeve 2. A sealing ring 3 3 is provided inside the sealing groove 3. Below the sealing ring 3 3, a rectangular retaining ring 2 14 is provided, which is fitted onto the central tube 4. There is a gap between the outer wall of the rectangular retaining ring 2 14 and the inner wall of the sealing groove 3. The inner wall of the rectangular retaining ring 2 14 contacts the outer wall of the central tube 4. A clamping screw sleeve 2 15 is threadedly connected to the lower part of the sealing groove 3 to clamp the rectangular retaining ring 2 14. There is a gap between the inner hole of the clamping screw sleeve 2 15 and the outer wall of the central tube 4. After a period of use, the sealing ring 3 3 will wear. The clamping screw sleeve 2 15 can be rotated to press the rectangular retaining ring 2 14 onto the clamping screw sleeve 2 15. The rectangular retaining ring 2 14 further squeezes the sealing ring 3 3, making the sealing ring 3 3 fit better against the central tube 4 and the sealing groove 3.

[0030] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A pipe punching device, comprising a central pipe (4), a spline sleeve (2), an upper connecting nut (1), a lower connecting nut (5), and a packing sleeve (6), wherein the packing sleeve (6) is provided with a plurality of bushings (8) and packing (9), characterized in that: A packing pad (12) is provided above the uppermost bushing (8). A pressing boss is provided above the packing pad (12). A pressing plate (17) is fitted on the pressing boss. A quick-release bolt (13) is provided on the outside of the pressing plate (17). A fixing sleeve (20) is connected to the quick-release bolt (13). The fixing sleeve (20) is fixed on the packing sleeve (6). Multiple positioning pressure posts (26) are provided on the bottom inner side of the pressing plate (17). An elastic rubber sleeve (7) is fitted on the positioning pressure post (26). A spring (27) is wrapped inside the elastic rubber sleeve (7). A sealing groove is provided on the upper outer wall of the packing pad (12). A sealing ring (21) is provided in the sealing groove. A pressure ring (19) is provided on the top of the sealing ring (21). Multiple positioning pressure holes are provided on the top of the packing pad (12) that connect to the sealing groove and allow the bottom of the positioning pressure post (26) to be inserted.

2. The pipe-flushing device according to claim 1, characterized in that, The bottom of the elastic rubber sleeve (7) is provided with a protective protrusion that extends into the positioning pressure hole. The bottom and top of the elastic rubber sleeve (7) are provided with positioning bosses (22). The top of the packing pad (12) and the bottom of the pressing plate (17) are provided with positioning recesses that cooperate with the positioning bosses (22).

3. The pipe-flushing device according to claim 1, characterized in that, Each bushing (8) and packing gasket (12) has multiple arc-shaped sealing grooves (23) on the contact surface between the bottom of the bushing (8) and the packing (9). The uppermost bushing (8) has an oil injection hole in the middle of its side wall that connects to its inner hole. The outer end of the oil injection hole is threaded with an oil injection nozzle (10). The outer side wall of the packing sleeve (6) has a strip hole (11) through which the outer end of the oil injection nozzle (10) can move up and down.

4. A pipe-flushing device according to claim 1, characterized in that, Multiple opening slots are evenly provided on the outer side wall of the clamping plate (17), and each opening slot is provided with a quick-release bolt (13). A clamping nut (18) is provided on the quick-release bolt (13). A rotating seat is rotatably installed at the lower end of the quick-release bolt (13), and the rotating seat is fixed on the outer side wall of the fixed sleeve (20).

5. A pipe-flushing device according to claim 4, characterized in that, The fixing sleeve (20) consists of two semi-circular sleeves. The two semi-circular sleeves are fixed to the upper outer side wall of the packing sleeve (6) by bolts. The lower inner side wall of the two semi-circular sleeves is provided with a positioning boss (22). The outer side wall of the packing sleeve (6) is provided with a positioning groove that cooperates with the positioning boss (22).

6. A pipe-flushing device according to claim 1, characterized in that, A sealing groove 2 is provided on the outside of the center hole at the top of the packing pad (12). A sealing ring 2 (16) is provided inside the sealing groove 2. A rectangular retaining ring 1 (24) is provided above the sealing ring 2 (16). The outer wall of the rectangular retaining ring 1 (24) contacts the inner wall of the sealing groove 2. A gap is provided between the inner wall of the rectangular retaining ring 1 (24) and the outer wall of the center tube (4). A clamping screw sleeve 1 (25) for clamping the rectangular retaining ring 1 (24) is threadedly connected to the upper part of the sealing groove 2. A gap is provided between the inner hole of the clamping screw sleeve 1 (25) and the outer wall of the center tube (4).

7. A pipe-flushing device according to claim 1, characterized in that, A sealing groove 3 is provided on the outside of the bottom center hole of the spline sleeve (2), and a sealing ring 3 (3) is provided inside the sealing groove 3. A rectangular retaining ring 2 (14) is provided below the sealing ring 3 (3) and is fitted on the center tube (4). There is a gap between the outer wall of the rectangular retaining ring 2 (14) and the inner wall of the sealing groove 3. The inner wall of the rectangular retaining ring 2 (14) is in contact with the outer wall of the center tube (4). The lower part of the sealing groove 3 is threaded with a clamping screw sleeve 2 (15) that clamps the rectangular retaining ring 2 (14). There is a gap between the inner hole of the clamping screw sleeve 2 (15) and the outer wall of the center tube (4).

Images