A convenient and easy-to-connect and fix oil pipe plug valve

Abstract

This invention relates to the field of plug valve technology, specifically to a conveniently connected and fixed oil pipe plug valve, comprising: a valve body, with connecting pipes symmetrically fixedly connected to the left and right ends of the valve body, and a flange 1 fixedly installed at the outer end of the connecting pipe. When the connecting cylinder is inserted into the inner end of the inner cylinder, the outer end of the movable rubber ring contacts the inner wall of the inner cylinder. When the connecting cylinder is pushed towards the inner end of the inner cylinder, the movable rubber ring will move towards one side of the frustum ring and contact the outer wall of the frustum ring. The frustum ring will push the movable rubber ring outward, making the outer wall of the movable rubber ring and the inner wall of the inner cylinder more tightly contacted, increasing the sealing effect. One end of a long bolt is passed through flange 1, flange 2, and sealing ring 1, and then a nut is screwed on. Then it is passed through sealing ring 2, flange 4, and sealing ring 2, and then another nut is screwed on. The two nuts are tightened in sequence, thereby fixing the connecting cylinder and the oil pipe, facilitating the connection of the plug valve and the oil pipe.

Description

Technical Field

[0001] This invention relates to the field of plug valve technology, specifically to an oil pipe plug valve that is easy to connect and fix. Background Technology

[0002] The tubing plug valve is a manually controlled valve in the drill string circulation system. It is used in emergency situations to deal with blowouts. It can also be used as a mud saving valve to prevent mud from splashing onto the rotary table. It is one of the blowout prevention tools in the drill pipe.

[0003] Chinese patent CN202021899537.3 discloses an oil pipe plug valve switching and positioning device, including a valve body, a valve core, and a rotary key. The valve core is disposed in the valve body, and a through hole is provided on the outer wall of the valve body. The rotary key passes through the through hole from the outside of the valve body and connects to the valve core. A pair of positioning blocks are symmetrically provided on the inner wall of the through hole. The positioning blocks have a concave surface on the side facing the rotary key. The pair of concave surfaces contact each other and form a cavity. The rotary key is disposed in the cavity. The rotary key is cylindrical, and a pair of protrusions are symmetrically provided in the middle of the outer wall of the rotary key. The sum of the diameter of the rotary key and the height of the pair of protrusions is between the maximum inner diameter and the minimum inner diameter of the cavity, ensuring reliable positioning and effectively preventing excessive rotation of the valve core.

[0004] However, the above solution cannot extend the length of the plug valve. When connecting two oil pipes through the plug valve, since the length and position of the oil pipe are fixed, after cutting the old oil pipe opening, the length of the oil pipe is insufficient, making it inconvenient to fix the plug valve on the oil pipe. Therefore, this invention proposes an oil pipe plug valve that is easy to connect and fix to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide an oil pipe plug valve that is easy to connect and fix, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a conveniently connected and fixed oil pipe plug valve, comprising: a valve body, wherein connecting pipes are symmetrically and fixedly connected to the left and right ends of the valve body, a flange one is fixedly installed at the outer port of the connecting pipe, an inner cylinder is inserted into the inner end of each connecting pipe, a flange two is fixedly installed at the outer end of the inner cylinder, and the flange two is fixedly connected to the flange one by fixing bolts.

[0007] A fixing ring is fixedly installed at the inner end of the inner cylinder, and a rubber ring is fixedly installed at the outer end of the fixing ring. The outer end of the rubber ring is in close contact with the inner wall of the connecting pipe.

[0008] A connecting cylinder is inserted into the inner end of the inner cylinder. The inner end of the connecting cylinder and the inner side wall of the rubber ring one are in close contact. A sealing component is fixedly installed on the outer wall of the connecting cylinder. A flange three is fixedly installed on the outer end of the connecting cylinder. The flange three is fixedly connected to the flange four at one end of the oil pipe, as well as flange one and flange two, respectively, by long bolts.

[0009] Preferably, the fixed ring and the inner cylinder have T-shaped cross sections, the rubber ring is L-shaped, and a limiting ring is fixedly installed at one end of the rubber ring. The limiting ring is made of metal. The limiting ring and the rubber ring are connected to the outer end of the fixed ring, and the outer end of the rubber ring is in contact with the inner wall of the connecting pipe. A guide slope is provided at the lower end of the rubber ring.

[0010] Preferably, a sealing cylinder is provided on the outer side between the inner cylinder and the connecting pipe. The sealing cylinder is made of rubber. The inner end of the sealing cylinder is in close contact with the outer wall of the inner cylinder, and the outer end of the sealing cylinder is in close contact with the inner wall of the connecting pipe. A sealing ring is fixedly installed on the outer end of the sealing cylinder. The sealing ring is located between flange one and flange two and is fixedly connected by fixing bolts.

[0011] Preferably, a guide slope is provided on the outer side of the inner end of the connecting cylinder. When the flange is fixed to the outer end of the flange by fixing bolts, the inner end of the inner cylinder is inserted into the inner side of the rubber ring by the compression rubber ring through the guide slope.

[0012] Preferably, the sealing component includes a second limiting ring, a third limiting ring, a frustum ring, and a movable rubber ring. The second limiting ring is fixedly installed on the outer wall of the inner end of the connecting cylinder. A circular ring is fixedly installed on the inner side of the second limiting ring, and the outer end of the circular ring can abut against the inner side of the fixed ring.

[0013] Preferably, the limiting ring three is fixedly installed on the outer wall of the outer end of the connecting cylinder, the frustum ring is fixedly sleeved on the outer wall of the connecting cylinder, the movable rubber ring is slidably sleeved on the outer wall of the connecting cylinder, the frustum ring is located between the limiting ring three and the movable rubber ring, the inner end of the movable rubber ring can abut against the outer wall of the frustum ring, and at the same time the outer wall of the movable rubber ring abuts against the inner wall of the inner cylinder.

[0014] Preferably, several through holes are evenly provided on the side walls of flange one, flange two, and sealing ring one, and one end of the fixing bolt passes through the through hole two and is threaded with a nut.

[0015] Preferably, the flange four is fixedly installed on one end side wall of the oil pipe, and a sealing ring two is fixedly installed on the outer end of the flange four.

[0016] Preferably, several through holes are evenly provided on the side walls of flange four, sealing ring two, flange one, flange two, and sealing ring one, and one end of the long bolt passes through the through hole one and is threaded with a nut.

[0017] Preferably, each of the long bolts has two nuts threaded onto its outer wall, one of which abuts against the outer wall of flange two, and the other nut abuts against the outer wall of flange four.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] This invention first fixes the inner cylinder to the connecting pipe with fixing bolts. When the connecting cylinder is inserted into the inner end of the inner cylinder, the outer end of the movable rubber ring contacts the inner wall of the inner cylinder. When the connecting cylinder is pushed towards the inner end of the inner cylinder, the movable rubber ring moves towards one side of the frustum ring and contacts the outer wall of the frustum ring. The frustum ring pushes the movable rubber ring outward, making the outer wall of the movable rubber ring and the inner wall of the inner cylinder more tightly contacted, increasing the sealing effect. One end of the long bolt is passed through flange one, flange two and sealing ring one and then screwed on a nut. Then it is passed through sealing ring two, flange four and sealing ring two and then screwed on another nut. The two nuts are tightened in sequence, thereby fixing the connecting cylinder and the oil pipe, which facilitates the connection of the stopcock valve and the oil pipe. Attached Figure Description

[0020] Figure 1 This is a front view of the overall structure of the present invention;

[0021] Figure 2 This is an exploded view of part of the structure of the present invention;

[0022] Figure 3 This is a schematic cross-sectional view of part of the structure of the present invention;

[0023] Figure 4 For the present invention Figure 3 Enlarged view of the structure of region A in the middle;

[0024] Figure 5 For the present invention Figure 3 Enlarged view of the structure of region B in the middle;

[0025] Figure 6 This is a schematic diagram of the plug structure of the present invention;

[0026] Figure 7 This is a schematic diagram of the flow stabilizer structure of the present invention.

[0027] In the diagram: 1. Valve body; 2. Connecting pipe; 3. Flange 1; 4. Sealing ring 1; 5. Sealing cylinder; 6. Flange 2; 7. Inner cylinder; 8. Limiting ring 1; 9. Rubber ring 1; 10. Fixing ring; 11. Connecting cylinder; 12. Flange 3; 13. Guide ramp 1; 14. Limiting ring 2; 15. Circular ring; 16. Limiting ring 3; 17. Frustum ring; 18. Moving rubber ring; 19. Oil pipe; 20. Flange 4; 21. Sealing ring 2; 22. Through hole 1; 23. Through hole 2; 24. Fixing bolt; 25. Long bolt; 26. Guide ramp 2; 27. Thruster; 28. Plug; 29. ​​Channel; 30. Flow stabilizer; 31. Shaft; 32. Bearing seat. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figures 1 to 7 This invention provides a technical solution: a conveniently connected and fixed oil pipe plug valve, comprising: a valve body 1, with connecting pipes 2 symmetrically fixedly connected to the left and right ends of the valve body 1; a flange 3 fixedly installed at the outer end of the connecting pipe 2; an inner cylinder 7 inserted into the inner end of each connecting pipe 2; a flange 6 fixedly installed at the outer end of the inner cylinder 7; the flange 6 being fixedly connected to the flange 3 by fixing bolts 24; a sealing cylinder 5 made of rubber being provided on the outer side between the inner cylinder 7 and the connecting pipe 2; the inner end of the sealing cylinder 5 being in close contact with the outer wall of the inner cylinder 7; and the outer end of the sealing cylinder 5 being in close contact with the outer wall of the connecting pipe 2. The inner walls are in close contact. A sealing ring 4 is fixedly installed on the outer end of the sealing cylinder 5. The sealing ring 4 is supported by rubber. The sealing ring 4 is located between flange 3 and flange 6 and is fixedly connected by fixing bolts 24. The sealing ring 4 seals between flange 3 and flange 6. The sealing cylinder 5 seals between the inner cylinder 7 and the connecting pipe 2. Several through holes 23 are evenly opened on the side walls of flange 3, flange 6 and sealing ring 4. One end of the fixing bolt 24 passes through the through hole 23 and is threaded with a nut, which facilitates the disassembly and assembly of the inner cylinder 7, sealing ring 4 and sealing cylinder 5.

[0030] A fixing ring 10 is fixedly installed at the inner end of the inner cylinder 7. The cross-section of the fixing ring 10 and the inner cylinder 7 is T-shaped. The rubber ring 9 is L-shaped. A limiting ring 8 is fixedly installed at one end of the rubber ring 9. The limiting ring 8 is made of metal. The limiting ring 8 and the rubber ring 9 are sleeved on the outer end of the fixing ring 10, and the outer end of the rubber ring 9 is in contact with the inner wall of the connecting pipe 2. A guide slope 26 is provided at the lower end of the rubber ring 9. The rubber ring 9 is fixedly installed at the outer end of the fixing ring 10, and the outer end of the rubber ring 9 is in close contact with the inner wall of the connecting pipe 2. 9 serves to seal between the connecting pipe 2 and the inner cylinder 7. A guide slope 13 is provided on the outer side of the inner end of the connecting cylinder 11. When the flange 2 6 is fixed to the outer end of the flange 3 by the fixing bolt 24, the inner end of the inner cylinder 7 is inserted into the inner side of the rubber ring 9 through the guide slope 13, so that the outer wall of the rubber ring 9 and the inner wall of the connecting pipe 2 fit more tightly. At the same time, the outer end of the connecting cylinder 11 and the inner wall of the rubber ring 9 are in close contact. The rubber ring 9 seals between the connecting pipe 2 and the connecting cylinder 11, further increasing the sealing effect.

[0031] A sealing component is fixedly installed on the outer wall of the connecting cylinder 11, and a flange 3 12 is fixedly installed on the outer end of the connecting cylinder 11. The flange 3 12 is fixedly connected to the flange 4 20 at one end of the oil pipe 19, as well as flange 1 3 and flange 2 6, by long bolts 25, thereby fixing the connecting cylinder 11 to the inner side of the inner cylinder 7.

[0032] The sealing components include a second limiting ring 14, a third limiting ring 16, a frustum ring 17, and a movable rubber ring 18. The second limiting ring 14 is fixedly installed on the outer wall of the inner end of the connecting cylinder 11. A circular ring 15 is fixedly installed on the inner side of the second limiting ring 14. The outer end of the circular ring 15 can abut against the inner side of the fixed ring 10 to seal between the inner cylinder 7 and the connecting cylinder 11. The third limiting ring 16 is fixedly installed on the outer wall of the outer end of the connecting cylinder 11. The frustum ring 17 is fixedly sleeved on the outer wall of the connecting cylinder 11. The movable rubber ring 18 is slidably sleeved on the outer wall of the connecting cylinder 11. The frustum ring 17 is located between the third limiting ring 16 and the movable rubber ring 18. The inner end of the movable rubber ring 18 can abut against the outer wall of the frustum ring 17. At the same time, the outer wall of the movable rubber ring 18 abuts against the inner wall of the inner cylinder 7 to seal between the inner cylinder 7 and the connecting cylinder 11 again.

[0033] Specifically, when the connecting cylinder 11 is inserted into the inner end of the inner cylinder 7, since the outer end of the movable rubber ring 18 is in contact with the inner wall of the inner cylinder 7, when the connecting cylinder 11 is pushed towards the inner end of the inner cylinder 7, the movable rubber ring 18 will move towards one side of the frustum ring 17 and contact the outer wall of the frustum ring 17. The frustum ring 17 will push the movable rubber ring 18 outward, so that the outer wall of the movable rubber ring 18 and the inner wall of the inner cylinder 7 will contact each other more tightly, thereby increasing the sealing effect.

[0034] Flange 4 20 is fixedly installed on one end of the side wall of the oil pipe 19. A sealing ring 21 is fixedly installed on the outer end of flange 4 20. Several through holes 22 are evenly opened on the side walls of flange 4 20, sealing ring 21, flange 3, flange 2 6 and sealing ring 4. One end of long bolt 25 passes through the through hole 22 and is threaded with a nut. Two nuts are threaded on the outer wall of each long bolt 25. One nut abuts against the outer wall of flange 2 6 and the other nut abuts against the outer wall of flange 4 20. First, pass one end of long bolt 25 through flange 3, flange 2 6 and sealing ring 4 and then screw on a nut. Then pass through sealing ring 21, flange 4 20 and sealing ring 21 and then screw on another nut. Tighten the two nuts in turn to fix the connecting cylinder 11 and the oil pipe 19.

[0035] Please see Figure 6 and Figure 7 In some embodiments, the valve body 1 includes a handle 27 and a plug 28. The plug 28 is fixed to the lower end of the handle 27. A through channel 29 is provided on the plug 28. A flow stabilizer 30 is rotatably connected inside the channel 29. A rotating shaft 31 is fixedly installed at both the upper and lower ends of the flow stabilizer 30. The rotating shaft 31 is rotatably connected to the inner wall of the upper and lower ends of the channel 29 through a bearing seat 32. More specifically, the rotating shaft 31 is located on one side of the center of the upper and lower ends of the flow stabilizer 30. When fluid flows through the oil pipe 19, the flow stabilizer 30 swings in the fluid as the liquid passes through the channel 29, making the fluid flow more stable.

[0036] When this device is in operation, the inner cylinder 7 is first fixed inside the connecting pipe 2 by fixing bolt 24. When the connecting cylinder 11 is inserted into the inner end of the inner cylinder 7, the outer end of the movable rubber ring 18 is in contact with the inner wall of the inner cylinder 7. When the connecting cylinder 11 is pushed towards the inner end of the inner cylinder 7, the movable rubber ring 18 will move towards one side of the frustum ring 17 and contact the outer wall of the frustum ring 17. The frustum ring 17 will push the movable rubber ring 18 outward, so that the outer wall of the movable rubber ring 18 and the inner wall of the inner cylinder 7 will contact each other more tightly, increasing the sealing effect. One end of the long bolt 25 is passed through flange 3, flange 6 and sealing ring 4 and then a nut is screwed on. Then it is passed through sealing ring 21, flange 4 and sealing ring 21 and then another nut is screwed on. The two nuts are tightened in sequence, thereby fixing the connecting cylinder 11 and the oil pipe 19.

[0037] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A conveniently connected and fixed oil pipe plug valve, comprising: The valve body (1) is characterized in that: the left and right ends of the valve body (1) are symmetrically fixedly connected with connecting pipes (2), the outer port of the connecting pipe (2) is fixedly installed with flange one (3), the inner end of each connecting pipe (2) is inserted with an inner cylinder (7), the outer end of the inner cylinder (7) is fixedly installed with flange two (6), and flange two (6) is fixedly connected with flange one (3) by fixing bolts (24); A fixing ring (10) is fixedly installed at the inner end of the inner cylinder (7), and a rubber ring (9) is fixedly installed at the outer end of the fixing ring (10). The outer end of the rubber ring (9) is in close contact with the inner wall of the connecting pipe (2). A connecting cylinder (11) is inserted into the inner end of the inner cylinder (7). The inner end of the connecting cylinder (11) and the inner end side wall of the rubber ring (9) are in close contact. A sealing component is fixedly installed on the outer wall of the connecting cylinder (11). A flange (12) is fixedly installed on the outer end of the connecting cylinder (11). The flange (12) is fixedly connected to the flange (20) at one end of the oil pipe (19) and the flange (3) and flange (6) respectively by long bolts (25). The fixed ring (10) and the inner cylinder (7) have T-shaped cross sections, and the rubber ring (9) is L-shaped. One end of the rubber ring (9) is fixedly installed with a limiting ring (8). The limiting ring (8) is made of metal. The limiting ring (8) and the rubber ring (9) are sleeved on the outer end of the fixed ring (10), and the outer end of the rubber ring (9) is in contact with the inner wall of the connecting pipe (2). The lower end of the rubber ring (9) is provided with a guide slope (26).

2. The conveniently connected and fixed oil pipe plug valve according to claim 1, characterized in that: A sealing cylinder (5) is provided on the outer side between the inner cylinder (7) and the connecting pipe (2). The sealing cylinder (5) is made of rubber. The inner end of the sealing cylinder (5) is in close contact with the outer wall of the inner cylinder (7), and the outer end of the sealing cylinder (5) is in close contact with the inner wall of the connecting pipe (2). A sealing ring (4) is fixedly installed on the outer end of the sealing cylinder (5). The sealing ring (4) is located between the flange (3) and the flange (6) and is fixedly connected by a fixing bolt (24).

3. The conveniently connected and fixed oil pipe plug valve according to claim 1, characterized in that: The inner end of the connecting cylinder (11) is provided with a guide slope (13). When the flange (6) is fixed to the outer end of the flange (3) by the fixing bolt (24), the inner end of the connecting cylinder (11) squeezes the rubber ring (9) through the guide slope (13) and inserts it into the inner side of the rubber ring (9).

4. The conveniently connected and fixed oil pipe plug valve according to claim 1, characterized in that: The sealing component includes a second limiting ring (14), a third limiting ring (16), a frustum ring (17), and a movable rubber ring (18). The second limiting ring (14) is fixedly installed on the inner end outer wall of the connecting cylinder (11). A circular ring (15) is fixedly installed on the inner side of the second limiting ring (14). The outer end of the circular ring (15) can abut against the inner side of the fixed ring (10).

5. A conveniently connected and fixed oil pipe plug valve according to claim 4, characterized in that: The limiting ring three (16) is fixedly installed on the outer wall of the outer end of the connecting cylinder (11), the frustum ring (17) is fixedly sleeved on the outer wall of the connecting cylinder (11), and the movable rubber ring (18) is slidably sleeved on the outer wall of the connecting cylinder (11). The frustum ring (17) is located between the limiting ring three (16) and the movable rubber ring (18). The inner end of the movable rubber ring (18) can abut against the outer wall of the frustum ring (17), and at the same time, the outer wall of the movable rubber ring (18) abuts against the inner wall of the inner cylinder (7).

6. The conveniently connected and fixed oil pipe plug valve according to claim 1, characterized in that: Several through holes 23 are evenly provided on the side walls of flange 1 (3), flange 2 (6) and sealing ring 1 (4). One end of the fixing bolt (24) passes through the through hole 2 (23) and is threaded with a nut.

7. The conveniently connected and fixed oil pipe plug valve according to claim 1, characterized in that: The flange four (20) is fixedly installed on one end side wall of the oil pipe (19), and the outer end of the flange four (20) is fixedly installed with a sealing ring two (21).

8. The conveniently connected and fixed oil pipe plug valve according to claim 1, characterized in that: Several through holes (22) are evenly provided on the side walls of the flange four (20), sealing ring two (21), flange one (3), flange two (6) and sealing ring one (4). One end of the long bolt (25) passes through the through hole one (22) and is threaded with a nut.

9. A conveniently connected and fixed oil pipe plug valve according to claim 1, characterized in that: Each of the long bolts (25) has two nuts threaded onto its outer wall, one of which abuts against the outer wall of flange two (6) and the other of which abuts against the outer wall of flange four (20).

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