A quick-connect device for large-diameter manifolds and its connection method

Abstract

This invention provides a quick-connect device and method for large-diameter manifolds, comprising an arc-shaped left and right clamp, one end of which is hinged. Both the left and right clamps have arc-shaped grooves in their middle sections that mate with protrusions at the ends of the connector body. The movable ends of the left and right clamps are respectively rotatably connected to a first hinge and a second hinge. The first and second hinges are connected by an adjusting rod, and are further connected to the adjusting rod by threads in opposite directions. A scale for measuring the distance between the first and second hinges is provided between the movable ends of the left and right clamps. This invention improves the connection efficiency and anti-loosening performance of manifolds.

Description

Technical Field

[0001] This invention relates to the field of large-diameter manifold connection technology, and in particular to a quick connection device and method for large-diameter manifolds. Background Technology

[0002] Currently, the application of large-diameter fracturing manifolds is becoming increasingly common in oil and gas field fracturing operations. Manifold connections are usually made using flange connections, while clamp-type quick connections are also beginning to enter the market.

[0003] However, flange connections require a lot of space and weight, and a large number of bolts and nuts need to be tightened during use; while underwater clamp connectors cannot be integrated into manifolds, limiting their application scenarios. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a quick connection device and method for large-diameter manifolds, which solves the problem of low manifold connection efficiency in existing technologies.

[0005] According to an embodiment of the present invention, a quick connection device for large-diameter manifolds includes an arc-shaped left hoop and a right hoop, with one end of the left hoop and the right hoop hinged together. The middle of the left hoop and the right hoop are each provided with an arc-shaped groove that mates with a protrusion at the end of the connector body. The movable ends of the left hoop and the right hoop are respectively rotatably connected to a first hinge and a second hinge. The first hinge and the second hinge are connected by an adjusting rod, and the first hinge and the second hinge are connected to the adjusting rod by threads in opposite directions. A scale for measuring the distance between the first hinge and the second hinge is provided between the movable ends of the left hoop and the right hoop.

[0006] Preferably, the movable ends of the first hinge and the second hinge are both coaxially fixedly connected with fixing screws. One end of the scale is coaxially rotatably connected to the second hinge through the fixing screw. The screw part of the fixing screw provided on the first hinge is located in the sliding groove of the scale. The length direction of the sliding groove is parallel to the length direction of the scale, and the scale is provided with length graduations on one side of the sliding groove.

[0007] Preferably, the movable ends of the first hinge and the second hinge are both fixedly connected to a locking plate. The locking plate is located inside the scale. The locking plate is provided with a positioning bolt for fixing the scale in conjunction with the fixing screw. The positioning bolt is arranged along the edge of the scale, and the scale is parallel to the adjusting rod.

[0008] Preferably, the adjusting rod has a radial protrusion in the middle, the first hinge and the second hinge are mirror-symmetrical along the radial protrusion, the adjusting rod is fitted with a friction plate, a spring and a contact plate, both ends of the radial protrusion are in contact with the friction plate, the movable end of the friction plate is connected to an arc-shaped contact plate through the spring, and the inner walls of the two contact plates are respectively in contact with the outer walls of the first hinge and the second hinge.

[0009] Preferably, the movable end of the right hoop is fixedly connected to a fastening bracket assembly via a connecting plate. One end of the adjusting rod is located inside the fastening bracket assembly. A drive extender for extending the adjusting rod is provided inside the fastening bracket assembly. The drive extender is coaxially fixedly connected to the end of the adjusting rod. The movable end of the drive extender is provided with an interface for connecting to the input shaft of the drive motor. The fastening bracket assembly is provided with a strip-shaped opening for the adjusting rod and the drive extender to swing in the vertical direction.

[0010] Preferably, the movable end of the drive extender is coaxially fixedly connected to a friction-reducing ring, the movable end of the fastening bracket assembly is fixedly connected to a cover plate, the movable end of the drive extender passes through the cover plate, and the movable end of the drive extender is in contact with the two side walls of the opening on the cover plate.

[0011] Preferably, the movable end of the left hoop is connected to a sheath, one end of the adjusting rod is located inside the sheath, and the movable end of the sheath is provided with an opening for the adjusting rod to pass through.

[0012] Preferably, a sealing ring is provided between the two connector bodies, and an annular groove for accommodating the sealing ring is provided on the inner wall of the movable end of the connector body; an annular protrusion and an adapter groove for inserting the annular protrusion are respectively provided on the connecting end of the two connector bodies.

[0013] A connection method for a large-diameter manifold quick connection device includes the following steps: Step 1: First, place the sealing ring in the annular groove of the two mating connector bodies. Connect the input end of the drive extender to the drive motor. Place the two connector bodies between the left and right clamps, ensuring that the protrusion at the end of the connector body is in the same vertical plane as the arc-shaped groove in the middle of the left and right clamps. Then start the drive motor, which drives the drive extender to rotate. The drive extender drives the adjusting rod to rotate, and the first and second hinges, which are threaded with the adjusting rod, move relative to each other, causing the left and right clamps to clamp the connector bodies. Step 2: When the inner walls of the left and right clamps begin to contact the outer walls of the connector bodies, reduce the input speed of the drive extender. Observe the position of the fixing screw connected to the first hinge on the scale and take a reading. Compare the reading with the manifold clamping dimension data designed for the connection device. Finally, when the fixing screw moves to a position close to the set dimension data, turn off and disconnect the drive motor. Connect a wrench to the movable end of the drive extender and tighten manually to complete the final tightening.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. Under the action of mechanical driving force, the joint body is quickly locked in both directions by means of the adjustment rod and the cooperation between the left hoop and the right hoop.

[0015] 2. The friction plate, acting on the spring force, fits against the radially protruding end wall of the adjusting rod, achieving an anti-vibration and anti-loosening effect.

[0016] 3. The drive extender allows for easy connection of the adjustment rod to the drive component, facilitating quick installation; at the same time, the fastening bracket assembly and protective sleeve protect the adjustment rod and drive extender.

[0017] 4. Based on the known outer diameter of the connector end, the dimensions of the left and right clamps, and the connection position of the adjusting rod with the first and second hinges, the position of the fixing screw on the left clamp on the scale can be determined when the left and right clamps tightly hold the connector, thus facilitating the detection of whether the installation is in place.

[0018] 5. When the scale is fixed, both ends of the scale are fixed by positioning bolts set on the lock plate to prevent the scale from shaking and causing damage. The lock plate is fixedly connected to the corresponding hinge. When the adjusting rod rotates, the first hinge and the second hinge will move accordingly, but will not rotate. The scale is installed on the lock plate, and the lock plate is fixed on the hinge, so the scale will not rotate, which can ensure the safety and accuracy of the scale.

[0019] 6. It solves the problem of difficulty in quickly connecting or disassembling joints or mounting surfaces in environments such as underwater where manual operation is not feasible. Attached Figure Description

[0020] Figure 1 This is a structural front view of an embodiment of the present invention.

[0021] Figure 2 This is a side view of the internal structure of an embodiment of the present invention.

[0022] Figure 3 for Figure 1 A cross-sectional view of plane AA.

[0023] Figure 4 for Figure 1 A cross-sectional view of the BB plane.

[0024] Figure 5 This is a front view of the adjusting rod in an embodiment of the present invention.

[0025] In the above figures: 1. Connector body; 2. Pin; 3. Limiting screw; 4. Sealing ring; 5. Contact piece; 6. Left hoop; 7. Right hoop; 8. Connecting plate; 9. Sheath; 10. Locking disc; 11. Scale; 12. Positioning bolt; 13. Fixing screw; 14. Fastening bracket assembly; 15. Drive extension; 16. Cover plate; 17. Friction piece; 18. First hinge; 19. Fixing ring; 20. Second hinge; 21. Adjusting rod; 22. Anti-friction ring; 23. Connecting screw. Detailed Implementation

[0026] The technical solutions of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] like Figure 1-5 As shown, to improve the connection efficiency of large-diameter manifolds, this invention proposes a quick connection device for large-diameter manifolds, including an arc-shaped left clamp 6 and a right clamp 7, with one end of the left clamp 6 and the right clamp 7 hinged together. Both the left clamp 6 and the right clamp 7 have arc-shaped grooves in their middle sections that mate with protrusions at the ends of the connector body 1. The movable ends of the left clamp 6 and the right clamp 7 are respectively rotatably connected to a first hinge 18 and a second hinge 20. The first hinge 18 and the second hinge 20 are connected by an adjusting rod 21, and the first hinge 18 and the second hinge 20 are connected to the adjusting rod 21 by threads in opposite directions. A scale 11 for measuring the distance between the first hinge 18 and the second hinge 20 is provided between the movable ends of the left clamp 6 and the right clamp 7.

[0028] One end of the left hoop 6 and the right hoop 7 are hinged by a pin 2 and a limiting screw 3. A fixing ring 19 is installed at the movable end of both the left hoop 6 and the right hoop 7. The first hinge 18 is rotatably installed in the movable end of the left hoop 6 through the fixing ring 19, and the second hinge 20 is rotatably installed in the movable end of the right hoop 7 through the fixing ring 19. Both the first hinge 18 and the second hinge 20 are cylindrical and have a circular through hole on their outer circumference. The axis of the circular through hole intersects with the axis of the cylinder. The two ends of the adjusting rod 21 are provided with external threads in opposite directions. The first hinge 18 and the second hinge 20 are respectively threaded to the two ends of the adjusting rod 21. When the adjusting rod 21 is rotated, the first hinge 18 and the second hinge 20 can move relative to each other or away from each other.

[0029] like Figure 1As shown. The movable ends of the first hinge 18 and the second hinge 20 are both coaxially fixedly connected to fixing screws 13. One end of the scale 11 is coaxially rotatably connected to the second hinge 20 via the fixing screws 13. The screw portion of the fixing screw 13 on the first hinge 18 is located within the sliding groove of the scale 11. The length direction of the sliding groove is parallel to the length direction of the scale 11, and the scale 11 has length graduations on one side of the sliding groove. The scale 11 is used to measure the distance between the first hinge 18 and the second hinge 20. The fixing screws 13 limit the scale 11. When relative movement occurs between the first hinge 18 and the second hinge 20, the fixing screw 13 mounted on the first hinge 18 will move relative to the scale 11, and the movement is along the length direction of the sliding groove on the scale 11.

[0030] like Figure 1 As shown. The movable ends of the first hinge 18 and the second hinge 20 are both fixedly connected to a locking plate 10. The locking plate 10 is located inside the scale 11. The locking plate 10 is provided with a positioning bolt 12 for fixing the scale 11 in conjunction with the fixing screw 13. The positioning bolt 12 is arranged along the edge of the scale 11. The scale 11 is parallel to the adjusting rod 21.

[0031] The positioning bolts 12 are used to fix the scale 11. Two positioning bolts 12 are installed on the locking disc 10 connected to the first hinge 18. The two positioning bolts 12 are located above and below the scale 11, respectively, and the bolt heads of the positioning bolts 12 are in contact with the top or bottom surface of the scale 11. Four positioning bolts 12 are installed on the locking disc 10 connected to the second hinge 20. The positioning bolts are located above, below and to one side of the end of the scale 11, respectively, and the bolt heads are all in contact with the scale 11. This achieves the fixation of the scale 11. By using a scale 11 parallel to the adjusting rod 21, the first hinge 18 and the second hinge 20 move as the adjusting rod 21 rotates. However, the first hinge 18 and the second hinge 20 do not rotate relative to the adjusting rod 21. The scale 11 is fixedly connected to the locking plate 10 by a positioning bolt 12. The locking plate 10 is fixed to the first hinge 18 or the second hinge 20. Therefore, the scale 11 does not rotate relative to the adjusting rod 21, and the distance between the first hinge 18 and the second hinge 20 can be accurately measured.

[0032] like Figure 1-5As shown. The adjusting rod 21 has a radial protrusion in its middle. The first hinge 18 and the second hinge 20 are mirror-symmetrical along the radial protrusion. A friction plate 17, a spring, and a contact plate 5 are fitted onto the adjusting rod 21. Both ends of the radial protrusion contact the friction plate 17. The movable end of the friction plate 17 is connected to an arc-shaped contact plate 5 via a spring. The inner walls of the two contact plates 5 are respectively in contact with the outer walls of the first hinge 18 and the second hinge 20. When the left clamp 6 and the right clamp 7 are connected to the connector body 1, the spring between the friction plate 17 and the contact plate 5 is compressed. At this time, through the spring force, the friction plate 17 fully contacts the radial protrusion on the adjusting rod 21. In subsequent operations, the friction plate 17 restricts the rotation of the adjusting rod 21, thus preventing the adjusting rod 21 from loosening.

[0033] The movable end of the right hoop 7 is fixedly connected to a fastening bracket assembly 14 via a connecting plate 8. One end of the adjusting rod 21 is located inside the fastening bracket assembly 14. A drive extender 15 for extending the adjusting rod 21 is provided inside the fastening bracket assembly 14. The drive extender 15 is coaxially fixedly connected to the end of the adjusting rod 21. The movable end of the drive extender 15 has an interface for connecting to the input shaft of a drive motor. The fastening bracket assembly 14 has a strip-shaped opening for the adjusting rod 21 and the drive extender 15 to swing vertically. The fastening bracket assembly 14 serves to shield the drive extender 15 and the adjusting rod 21, providing protection.

[0034] The movable end of the drive extender 15 is coaxially fixedly connected to a friction-reducing ring 22, and the movable end of the fastening bracket assembly 14 is fixedly connected to a cover plate 16. The movable end of the drive extender 15 passes through the cover plate 16, and the movable end of the drive extender 15 is in contact with the two side walls of the opening on the cover plate 16. The opening on the cover plate 16 is used to limit the input end of the drive extender 15. The cover plate 16 is fixed to the fastening bracket assembly 14 by connecting screws 23.

[0035] The movable end of the left hoop 6 is connected to a sheath 9, and one end of the adjusting rod 21 is located inside the sheath 9. The movable end of the sheath 9 has an opening for the adjusting rod 21 to pass through. The sheath 9 is used to protect the end of the adjusting rod 21.

[0036] A sealing ring 4 is provided between the two connector bodies 1, and an annular groove for accommodating the sealing ring 4 is provided on the inner wall of the movable end of the connector body 1; an annular protrusion and an adapter groove for inserting the annular protrusion are respectively provided on the connecting ends of the two connector bodies 1.

[0037] A connection method for a large-diameter manifold quick connection device includes the following steps: Step 1: First, place the sealing ring 4 in the annular groove of the two mating connector bodies 1, connect the input end of the drive extension 15 to the drive motor, place the two connector bodies 1 between the left hoop 6 and the right hoop 7, and ensure that the protrusion at the end of the connector body 1 is in the same vertical plane as the arc groove in the middle of the left hoop 6 and the right hoop 7, then start the drive motor, the drive motor drives the drive extension 15 to rotate, the drive extension 15 drives the adjusting rod 21 to rotate, the first hinge 18 and the second hinge 20 threaded with the adjusting rod 21 move relative to each other, and drive the left hoop 6 and the right hoop 7 to clamp the connector body 1; Step 2: When the inner walls of the left hoop 6 and right hoop 7 begin to contact the outer wall of the connector body 1, reduce the input speed of the drive extender 15, observe the position of the fixing screw 13 connected to the first hinge 18 on the scale 11, and take a reading. Compare this reading with the manifold clamping dimension data designed for the connecting device. Finally, when the fixing screw 13 moves to a position close to the set dimension data, turn off and disconnect the drive motor. Connect a wrench to the movable end of the drive extender 15 and tighten it manually to complete the final tightening.

Claims

1. A quick-connect device for large-diameter manifolds, characterized in that: It includes an arc-shaped left hoop (6) and a right hoop (7), with one end of the left hoop (6) and the right hoop (7) hinged together. The middle of the left hoop (6) and the right hoop (7) is provided with an arc-shaped groove that matches the protrusion at the end of the connector body (1). The movable ends of the left hoop (6) and the right hoop (7) are respectively rotatably connected to a first hinge (18) and a second hinge (20). The first hinge (18) and the second hinge (20) are connected by an adjusting rod (21), and the first hinge (18) and the second hinge (20) are connected to the adjusting rod (21) by threads in opposite directions. A scale (11) for measuring the distance between the first hinge (18) and the second hinge (20) is provided between the movable ends of the left hoop (6) and the right hoop (7). The movable ends of the first hinge (18) and the second hinge (20) are both fixedly connected to a fixing screw (13) on the same axis. One end of the scale (11) is rotatably connected to the second hinge (20) on the same axis through the fixing screw (13). The screw part of the fixing screw (13) provided on the first hinge (18) is located in the sliding groove of the scale (11). The length direction of the sliding groove is parallel to the length direction of the scale (11), and the scale (11) is provided with a length scale on one side of the sliding groove. The movable ends of the first hinge (18) and the second hinge (20) are both fixedly connected to a locking plate (10). The locking plate (10) is located inside the scale (11). The locking plate (10) is provided with a positioning bolt (12) for fixing the scale (11) in conjunction with the fixing screw (13). The positioning bolt (12) is arranged along the edge of the scale (11). The scale (11) is parallel to the adjusting rod (21). The adjusting rod (21) has a radial protrusion in the middle. The first hinge (18) and the second hinge (20) are mirror-symmetrical along the radial protrusion. The adjusting rod (21) is fitted with a friction plate (17), a spring and a contact plate (5). Both ends of the radial protrusion are in contact with the friction plate (17). The movable end of the friction plate (17) is connected to an arc-shaped contact plate (5) through a spring. The inner walls of the two contact plates (5) are respectively in contact with the outer walls of the first hinge (18) and the second hinge (20). The movable end of the right hoop (7) is fixedly connected to the fastening bracket assembly (14) via the connecting plate (8). One end of the adjusting rod (21) is located inside the fastening bracket assembly (14). The fastening bracket assembly (14) is provided with a drive extender (15) for extending the adjusting rod (21). The drive extender (15) is coaxially fixedly connected to the end of the adjusting rod (21). The movable end of the drive extender (15) is provided with an interface for connecting the input shaft of the drive motor. The fastening bracket assembly (14) is provided with a strip-shaped opening for the adjusting rod (21) and the drive extender (15) to swing in the vertical direction.

2. The quick connection device for large-diameter manifolds as described in claim 1, characterized in that: The movable end of the drive extender (15) is coaxially fixedly connected to a friction-reducing ring (22), and the movable end of the fastening bracket assembly (14) is fixedly connected to a cover plate (16). The movable end of the drive extender (15) passes through the cover plate (16), and the movable end of the drive extender (15) is in contact with the two side walls of the opening on the baffle cover plate (16).

3. The quick connection device for large-diameter manifolds as described in claim 1, characterized in that: The movable end of the left hoop (6) is connected to a sheath (9), and one end of the adjusting rod (21) is located inside the sheath (9). The movable end of the sheath (9) is provided with an opening for the adjusting rod (21) to pass through.

4. The quick connection device for large-diameter manifolds as described in claim 1, characterized in that: A sealing ring (4) is provided between the two connector bodies (1), and an annular groove for accommodating the sealing ring (4) is provided on the inner wall of the movable end of the connector body (1); an annular protrusion and an adapter groove for inserting the annular protrusion are respectively provided on the connecting ends of the two connector bodies (1).

5. A connection method for a quick-connect device for large-diameter manifolds, characterized in that, The application of the connection device as described in claim 1 includes the following steps: Step 1: First, place the sealing ring (4) in the annular groove of the two interlocking joint bodies (1), connect the input end of the drive extension (15) to the drive motor, place the two joint bodies (1) between the left hoop (6) and the right hoop (7), and ensure that the protrusion at the end of the joint body (1) is in the same vertical plane as the arc groove in the middle of the left hoop (6) and the right hoop (7), then start the drive motor, the drive motor drives the drive extension (15) to rotate, the drive extension (15) drives the adjusting rod (21) to rotate, the first hinge (18) and the second hinge (20) that are threaded with the adjusting rod (21) move relative to each other, and drive the left hoop (6) and the right hoop (7) to clamp the joint body (1); Step 2: When the inner walls of the left hoop (6) and right hoop (7) begin to contact the outer wall of the connector body (1), reduce the input speed of the drive extender (15), observe the position of the fixing screw (13) connected on the first hinge (18) on the scale (11), and read the value. Compare it with the size data of the manifold clamp designed by the connecting device. Finally, when the fixing screw (13) moves to the position of the set size data, turn off and disconnect the drive motor. Connect the force wrench to the movable end of the drive extender (15) and tighten it manually to complete the final tightening.

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