Rapid dismounting device and dismounting method for oil and gas wellhead equipment

Abstract

The invention discloses an oil and gas wellhead equipment quick dismounting device which comprises an upper shackle component and a lower supporting component, a screwing sleeve is arranged between the upper shackle component and the lower supporting component and used for adjusting the distance between the upper shackle component and the lower supporting component, and a rotating mechanism and a hydraulic mechanism are arranged on the upper shackle component and used for adjusting the distance between the upper shackle component and the lower supporting component. The rotating mechanism and the hydraulic mechanism are both used for driving the upper rotating component to rotate so as to detach wellhead equipment. The quick dismounting device can be used for quick dismounting of wellhead equipment, dismounting of wellhead flange connecting bolts is achieved through hydraulic driving during operation, the labor intensity of operators is relieved, and the field operation efficiency is improved. The invention further discloses a dismounting method of the quick dismounting device for the oil and gas wellhead equipment, holes of the upper shackle frame and the lower stabilizing frame are aligned to nuts to be dismounted, the screwing sleeve is rotated to enable the bottom of the upper shackle frame and the top of the lower stabilizing frame to make contact with the nuts on the upper side and the lower side of the flange plate, and dismounting and shackle work is conducted through the rotating mechanism and the hydraulic mechanism; operation is simple and fast.

Description

Technical Field

[0001] The invention belongs to the technical field of oil and gas drilling equipment, relates to a quick disassembly device for oil and gas wellhead equipment, and also relates to a disassembly method for the quick disassembly device for oil and gas wellhead equipment. Background Art

[0002] Wellhead equipment plays a role in controlling the pressure in the wellbore and establishing a passage from the bottom of the well to the ground drilling and production equipment during oil and gas exploration and development operations, ensuring the safety of oil and gas exploration and production. It mainly includes key equipment such as wellhead casing heads, blowout preventers, oil production wellheads, and drilling spools.

[0003] Wellhead equipment is usually connected by flanges, and the flange interface is sealed by metal sealing gaskets. Therefore, in order to ensure the reliability of flange connection sealing, the torque of the connecting bolts and nuts is very large, especially for wellhead equipment with large diameter specifications. The bolt specifications are large and the bolt tightening torque is large. It is very difficult for on-site operators to disassemble the wellhead equipment with a wrench, and there is a risk of insufficient manual disassembly torque, and the wrench and nut slipping during the disassembly process, resulting in the risk of the equipment being unable to be disassembled. Summary of the invention

[0004] The purpose of the present invention is to provide a quick disassembly device for oil and gas wellhead equipment, which solves the problem in the prior art that it is difficult for on-site workers to disassemble the wellhead equipment using a wrench due to the large specifications and tightening torque of the wellhead equipment bolts. The present invention also provides a disassembly method for the quick disassembly device for oil and gas wellhead equipment, which has the characteristics of simple and quick operation.

[0005] The first technical solution adopted by the present invention is a quick disassembly device for oil and gas wellhead equipment, comprising an upper detachable component and a lower supporting component, a tightening sleeve is provided between the upper detachable component and the lower supporting component for adjusting the distance between the upper detachable component and the lower supporting component, and a rotating mechanism and a hydraulic mechanism are provided on the upper detachable component, both of which are used to drive the upper rotating component to rotate to disassemble the wellhead equipment.

[0006] The first technical solution of the present invention is also characterized in that:

[0007] The upper rotating component comprises a ratchet gear lower cover and a ratchet gear upper cover which are arranged opposite to each other, the ratchet gear upper cover is provided with a circular hole a, and the ratchet gear lower cover and the ratchet gear upper cover are connected by screws and nuts; a pawl column a is provided on the side wall of the ratchet gear lower cover facing the ratchet gear upper cover, and a pawl protrusion is provided on the pawl column a, and a baffle a is also provided on the side wall of the ratchet gear lower cover facing the ratchet gear upper cover; a pawl column b is provided on the side wall of the ratchet gear upper cover facing the ratchet gear lower cover, a pawl column groove is provided on the pawl column b, and the pawl column groove cooperates with the pawl protrusion, and a baffle b is also provided on the side wall of the ratchet gear upper cover facing the ratchet gear lower cover; a ratchet bevel gear is provided between the ratchet gear lower cover and the ratchet gear upper cover, and the baffle a and the baffle b limit the ratchet bevel gear; the upper rotating component also comprises a ratchet gear pawl arranged between the ratchet gear lower cover and the ratchet bevel gear, and the ratchet gear pawl is sleeved on the pawl column a and the pawl column b to limit the turning direction of the ratchet bevel gear.

[0008] The lower supporting component includes a lower stabilizing frame, an opening is opened at the end of the lower stabilizing frame, and a thread is provided on the inner wall of the opening. The lower stabilizing frame is provided with a ratchet column along the circumference of the opening, and a stabilizing pawl, a stabilizing ratchet and a stabilizing frame lower support are provided in sequence at the bottom of the opening; the stabilizing ratchet includes a rotating outer cylindrical surface arranged on its ratchet side, which is used to rotate the stabilizing ratchet, and a cylindrical part is provided on one side of the stabilizing ratchet, which cooperates with the hole of the lower stabilizing frame; the stabilizing pawl cooperates with the ratchet column to stabilize the steering of the stabilizing ratchet; the stabilizing frame lower support is connected to the thread on the lower stabilizing frame in a threaded connection manner, and the stabilizing frame lower support fixes the stabilizing ratchet and the stabilizing pawl to the bottom of the lower stabilizing frame.

[0009] The upper shackle component includes an upper shackle frame and a shackle cover. A circular hole is opened at the end of the upper shackle frame, and a groove is arranged at the end of the upper shackle frame along the circumference of the circular hole. A protrusion is arranged at the bottom of the shackle cover. The groove and the protrusion cooperate to fix the shackle cover and the upper shackle frame.

[0010] The rotating mechanism includes a motor component, and a motor driving rod is connected to one side of the motor component for driving the motor driving rod to rotate. The motor driving rod is circumferentially sleeved with a driving bevel gear. The rotation of the motor driving rod will drive the driving bevel gear to rotate; the rotating mechanism also includes a bevel gear screw and a bevel gear gasket. The bevel gear gasket is in contact with the driving bevel gear. The bevel gear screw passes through the bevel gear gasket and is connected to the motor driving rod and fixes the driving bevel gear and the motor driving rod.

[0011] The hydraulic mechanism includes a hydraulic cylinder housing and a hydraulic cylinder cover, and the hydraulic cylinder housing and the hydraulic cylinder cover are fixedly connected by hydraulic cylinder bolts composed of hydraulic cylinder screws and hydraulic cylinder nuts; a piston rod and a piston are arranged in the hydraulic cylinder housing, and the piston is sleeved on the end of the piston rod, and the piston is fixed to the end of the piston rod by passing the piston screw through the piston gasket, and the piston is slidably connected in the hydraulic cylinder housing, and the other end of the piston rod passes through the hydraulic cylinder cover and is provided with a slide groove, and the ratchet gear lower cover and the ratchet gear upper cover are connected by a pin screw and a pin nut, and the pin screw is located in the slide groove and is used to limit the ratchet gear lower cover and the ratchet gear upper cover; an inlet and an outlet are arranged on the hydraulic cylinder housing, and hydraulic oil flows in from the inlet and flows out from the outlet to push the piston rod to move.

[0012] The tightening sleeve is connected to the upper shackle frame and the lower stabilizing frame through threads. The upper rotating end and the lower rotating end of the tightening sleeve are designed as two threads with different rotation directions, so that the tightening sleeve can adjust the distance between the upper shackle frame and the lower stabilizing frame.

[0013] The circular opening a is concentric with the circular opening b.

[0014] The upper shackle frame is provided with a threaded hole, and the motor component is fixedly connected to the upper shackle frame through the cooperation of the motor screw and the threaded hole.

[0015] The second technical solution adopted by the present invention is a disassembly method of a quick disassembly device for oil and gas wellhead equipment, using the quick disassembly device for oil and gas wellhead equipment, comprising the following steps:

[0016] Move the quick disassembly device of the wellhead equipment to the bolts of the flange to be disassembled, align the upper shackle frame and the lower stabilizing frame with the nuts to be disassembled, rotate the tightening sleeve to make the shackle frame and the lower stabilizing frame contact with the nuts on the upper and lower sides of the flange; the ratchet bevel gear is sleeved on the nuts on the upper side of the flange; the ratchet bevel gear and the stabilizing ratchet can completely cover the nuts on the upper and lower sides of the flange; the ratchet bevel gear is driven to rotate by the hydraulic force; the ratchet bevel gear rotates to quickly shackle the nuts on the upper side of the flange.

[0017] The beneficial effects of the present invention are:

[0018] 1. A quick disassembly device for oil and gas wellhead equipment can be used for quick disassembly of wellhead equipment. During operation, the wellhead flange connection bolts can be disassembled through hydraulic drive, which reduces the labor intensity of operators and improves the efficiency of on-site operations;

[0019] 2. The present invention adjusts the fitting spacing of the disassembly device through a double helix structure, and can operate on flanges of different specifications, with a wide range of applications;

[0020] 3. The present invention has two modes for disassembling the flange connection bolts of the wellhead equipment. In the first mode, when the bolts with large pre-tightening torque are difficult to loosen, the loosening is achieved by driving the hydraulic cylinder, and then the motor mechanism is used to achieve the fast unfastening operation of the bolts; in the second mode, for the bolts with small pre-tightening torque, the fast unfastening operation can be achieved directly by driving the motor mechanism, thereby improving the efficiency of the on-site operation;

[0021] 4. In view of the possibility of slipping of the nut on the lower side of the flange during disassembly, the present invention designs a stabilizing mechanism, which fixes the nut on the lower side of the lower flange through a ratchet pawl, so that the nut on the upper side of the flange can be quickly disassembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the oil and gas wellhead equipment quick disassembly device of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the upper rotating component in the oil and gas wellhead equipment quick disassembly device of the present invention;

[0024] Figure 3 It is a partial enlarged schematic diagram of the lower cover of the ratchet gear in the quick disassembly device for oil and gas wellhead equipment of the present invention;

[0025] Figure 4 It is a partial enlarged schematic diagram of the ratchet gear upper cover in the oil and gas wellhead equipment quick disassembly device of the present invention;

[0026] Figure 5 It is a structural schematic diagram of the rotating mechanism in the oil and gas wellhead equipment quick disassembly device of the present invention;

[0027] Figure 6 It is a structural schematic diagram of the upper and lower buckle components in the oil and gas wellhead equipment quick disassembly device of the present invention;

[0028] Figure 7 It is a partial enlarged structural schematic diagram of a shackle cover in the oil and gas wellhead equipment quick disassembly device of the present invention;

[0029] Figure 8 It is a partial enlarged structural schematic diagram of the upper shackle frame in the oil and gas wellhead equipment quick disassembly device of the present invention;

[0030] Fig. 9 It is a structural schematic diagram of the lower support component in the oil and gas wellhead equipment quick disassembly device of the present invention;

[0031] Fig.10 It is a structural schematic diagram of a stable ratchet in a quick disassembly device for oil and gas wellhead equipment of the present invention;

[0032] Fig.11 It is a partial enlarged structural schematic diagram of the lower stabilizing frame in the oil and gas wellhead equipment quick disassembly device of the present invention;

[0033] Fig.12 It is a structural schematic diagram of a tightening sleeve in a quick disassembly device for oil and gas wellhead equipment of the present invention;

[0034] Fig.13 It is a partial enlarged schematic diagram of the connection structure between the piston rod and the ratchet gear upper cover and the ratchet gear lower cover in the oil and gas wellhead equipment quick disassembly device of the present invention;

[0035] Fig.14 It is a partially enlarged schematic diagram of the connection structure between the motor component and the upper breakout frame in the oil and gas wellhead equipment quick disassembly device of the present invention.

[0036] In the figure, 1. upper rotating part, 2. rotating mechanism, 3. upper shackle part, 4. tightening sleeve, 401. upper rotating end, 402. lower rotating end, 5. lower supporting part, 6. ratchet gear lower cover, 601. bulge at the pawl, 602. circular hole a, 603. baffle a, 604. pawl column a, 7. ratchet gear pawl, 8. ratchet bevel gear, 9. upper and lower cover screws, 10. ratchet gear upper cover, 1001. pawl column groove, 1002. baffle, 1003. pawl column b, 11. upper and lower cover nuts, 12. bevel gear screw, 13. bevel gear gasket, 14. driving bevel gear, 15. motor driving rod, 16. motor part, 17. upper shackle frame, 1701 .Groove, 1702. Hydraulic cylinder housing, 1703. Inlet, 1704. Outlet, 1705. Circular hole b, 1706. Threaded hole, 18. Shackle cover, 1801. Protrusion, 19. Hydraulic cylinder head nut, 20. Hydraulic cylinder head, 21. Piston rod, 2101. Slide, 22. Hydraulic cylinder screw, 23. Piston, 24. Piston gasket, 25. Piston screw, 26. Stabilizing frame support, 27. Stabilizing ratchet, 2701. Cylindrical part, 2702 Rotating outer cylindrical surface, 28. Stabilizing pawl, 29. Lower stabilizing frame, 2901. Hole, 2902. Ratchet column, 2903. Thread, 30. Pin screw, 31. Pin nut, 32. Motor screw. DETAILED DESCRIPTION

[0037] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] Example 1

[0039] The present invention provides a quick disassembly device for oil and gas wellhead equipment, such as Figure 1 As shown, it includes an upper breakaway component 3 and a lower support component 5, a tightening sleeve 4 is provided between the upper breakaway component 3 and the lower support component 5, and is used to adjust the distance between the upper breakaway component 3 and the lower support component 5. A rotating mechanism 2 and a hydraulic mechanism are provided on the upper breakaway component 3, and the rotating mechanism and the hydraulic mechanism are both used to drive the upper rotating component 1 to rotate to disassemble the wellhead equipment.

[0040] In some embodiments, Figure 2-4 As shown, the upper rotating part 1 includes a ratchet gear lower cover 6 and a ratchet gear upper cover 10 which are arranged opposite to each other, the ratchet gear upper cover 10 is provided with a circular hole a602, and the ratchet gear lower cover 6 and the ratchet gear upper cover 10 are connected by screws 9 and nuts 11; a pawl column a604 is provided on the side wall of the ratchet gear lower cover 6 facing the ratchet gear upper cover 10, and a pawl protrusion 601 is provided on the pawl column a604, and a baffle a603 is also provided on the side wall of the ratchet gear lower cover 6 facing the ratchet gear upper cover 10; a pawl column b1003 is provided on the side wall of the ratchet gear upper cover 10 facing the ratchet gear lower cover 6, and a pawl protrusion 601 is provided on the pawl column b1003 The column groove 1001 and the pawl column groove 1001 cooperate with the protrusion 601 at the pawl to prevent each other from being misaligned. A baffle b1002 is also provided on the side wall of the ratchet gear upper cover 10 facing the ratchet gear lower cover 6; a ratchet bevel gear 8 is provided between the ratchet gear lower cover 6 and the ratchet gear upper cover 10, and the baffle a603 and the baffle b1002 limit the ratchet bevel gear 8; the upper rotating part 1 also includes a ratchet pawl 7 arranged between the ratchet gear lower cover 6 and the ratchet bevel gear 8, and the ratchet pawl 7 is sleeved on the pawl column a604 and the pawl column b1003 to limit the rotation of the ratchet bevel gear 8.

[0041] In some embodiments, Figure 9-11 The lower supporting component 5 shown includes a lower stabilizing frame 29, an opening 2901 is opened at the end of the lower stabilizing frame 29, a thread 2903 is provided on the inner wall of the opening 2901, a ratchet column 2902 is provided along the circumference of the opening 2901 of the lower stabilizing frame 29, and a stabilizing pawl 28, a stabilizing ratchet 27 and a stabilizing frame lower support 26 are provided in sequence at the bottom of the opening; the stabilizing ratchet 27 includes a rotating outer circular surface 2702 arranged on its ratchet side, which is used to rotate the stabilizing ratchet 27, and a cylindrical part 2701 is provided on one side of the stabilizing ratchet 27, and the cylindrical part 2701 cooperates with the opening 2901 of the lower stabilizing frame 29; the stabilizing pawl 28 cooperates with the ratchet column 2902 to stabilize the steering of the stabilizing ratchet 27; the stabilizing frame lower support 26 is connected to the thread 2903 of the lower stabilizing frame 29 in a threaded connection manner, and the stabilizing frame lower support 26 fixes the stabilizing ratchet and the stabilizing pawl 28 to the bottom of the lower stabilizing frame 29.

[0042] Example 2

[0043] In some embodiments, Figure 6-8 The upper shackle component 3 shown includes an upper shackle frame 17 and a shackle cover 18. A circular hole b1705 is opened at the end of the upper shackle frame 17. A groove 1701 is arranged circumferentially along the circular hole b1705 at the end of the upper shackle frame 17. A protrusion 1801 is arranged at the bottom of the shackle cover 18. The groove 1701 and the protrusion 1801 cooperate to fix the shackle cover 18 and the upper shackle frame 17.

[0044] In some embodiments, Figure 5The rotating mechanism 2 shown includes a motor component 16, and a motor driving rod 15 is connected to one side of the motor component 16 for driving the motor driving rod 15 to rotate. The motor driving rod 15 is circumferentially sleeved with a driving bevel gear 14. The rotation of the motor driving rod 15 will drive the driving bevel gear 14 to rotate; the rotating mechanism 2 also includes a bevel gear screw 12 and a bevel gear gasket 13. The bevel gear gasket 13 is in contact with the driving bevel gear 14. The bevel gear screw 12 passes through the bevel gear gasket 13 and is connected to the motor driving rod 15 and fixes the driving bevel gear 14 and the motor driving rod 15.

[0045] In some embodiments, Fig.13 As shown, the hydraulic mechanism includes a hydraulic cylinder housing 1702 and a hydraulic cylinder cover 20, and the hydraulic cylinder housing 1702 and the hydraulic cylinder cover 20 are fixedly connected by hydraulic cylinder bolts composed of hydraulic cylinder screws 22 and hydraulic cylinder nuts 19; a piston rod 21 and a piston 23 are arranged in the hydraulic cylinder housing 1702, the piston 23 is sleeved on the end of the piston rod 21, and the piston 23 is fixed to the end of the piston rod 21 by passing the piston screw 25 through the piston gasket 24, the piston 23 is slidably connected in the hydraulic cylinder housing 1702, the other end of the piston rod 21 passes through the hydraulic cylinder cover 20 and is provided with a slide groove 2101, the ratchet gear lower cover 6 and the ratchet gear upper cover 10 are connected by a pin screw 30 and a pin nut 31, the pin screw 30 is located in the slide groove 2101, and is used to limit the ratchet gear lower cover 6 and the ratchet gear upper cover 10; an inlet 1703 and an outlet 1704 are arranged on the hydraulic cylinder housing 1702, and the hydraulic oil flows in from the inlet 1703 and flows out from the outlet 1704, which is used to push the piston rod 21 to move.

[0046] Example 3

[0047] In some embodiments, Fig.12 The tightening sleeve 4 shown is connected to the upper unfastening frame 17 and the lower stabilizing frame 29 through threads. The upper rotating end 401 and the lower rotating end 402 of the tightening sleeve 4 are designed as two threads with different rotation directions, so that the tightening sleeve 4 can adjust the distance between the upper unfastening frame 17 and the lower stabilizing frame 29.

[0048] In some embodiments, the circular hole a602 is concentric with the circular hole b1705.

[0049] In some embodiments, Fig.14 As shown, a threaded hole 1706 is formed on the upper shackle frame 17 , and the motor component 16 is fixedly connected to the upper shackle frame 17 through the motor screw 32 cooperating with the threaded hole 1706 .

[0050] The present invention also provides a disassembly method of the above-mentioned oil and gas wellhead equipment quick disassembly device, using the above-mentioned oil and gas wellhead equipment quick disassembly device, comprising the following steps:

[0051] Step 1: Hold the tightening sleeve 4 and move the wellhead equipment quick disassembly device to the bolts of the flange to be disassembled, align the holes of the upper shackle frame 17 and the lower stabilizing frame 29 with the nuts to be disassembled, rotate the tightening sleeve 4 counterclockwise, and the spacing between the upper shackle component 3 and the lower supporting component 5 gradually decreases along the thread until the bottom of the upper shackle frame 17 and the top of the lower stabilizing frame 29 are in contact with the upper and lower nuts of the flange;

[0052] Step 2, move the pin shaft composed of the pin screw 30 and the pin nut 31 to slide along the slide groove of the piston rod 21, and transmit the movement of the pin shaft to the ratchet pawl 7 through the ratchet gear lower cover 6 and the ratchet gear upper cover 10. The ratchet gear pawl 7 then transmits the force to the ratchet bevel gear 8 and rotates it, and selects an appropriate rotation angle to make the ratchet bevel gear 8 sleeve on the nut on the upper side of the flange;

[0053] Step 3, rotate the outer cylindrical surface of the stabilizing ratchet 27 clockwise to make the stabilizing ratchet 27 sleeved on the nut at the bottom of the flange, and rotate the tightening sleeve 4 counterclockwise to reduce the distance between the upper shackle component 3 and the lower supporting component 5, until the ratchet bevel gear 8 and the stabilizing ratchet 27 can completely sleeve the upper and lower side nuts of the flange;

[0054] Step 4: Hydraulic oil quickly enters from the inlet, pushing the piston 23, causing the piston rod 21 to move outward, and the piston rod 21 pushes the pin, thereby driving the ratchet bevel gear 8 to rotate through the hydraulic force, thereby loosening the nut on the upper side of the flange;

[0055] Step 5, after the nuts on the upper side of the flange are loosened, the rotating mechanism 2 is turned on. The rotating mechanism 2 drives the driving bevel gear 14 to rotate through the motor driving rod 15. The driving bevel gear 14 drives the driving bevel gear 14 to rotate counterclockwise through the meshing ratchet bevel gear 8, thereby realizing the rapid unfastening of the nuts on the upper side of the flange.

Claims

1. Quick disassembly device for oil and gas wellhead equipment, It is characterized in that The utility model comprises an upper detachable part (3) and a lower supporting part (5), wherein a tightening sleeve (4) is provided between the upper detachable part (3) and the lower supporting part (5) for adjusting the distance between the upper detachable part (3) and the lower supporting part (5), and the upper detachable part (3) is provided with a rotating mechanism (2) and a hydraulic mechanism, and the rotating mechanism and the hydraulic mechanism are both used to drive the upper rotating part (1) to rotate so as to dismantle the wellhead equipment.

2. The oil and gas wellhead equipment quick disassembly device according to claim 1, It is characterized in that The upper rotating component (1) comprises a ratchet gear lower cover (6) and a ratchet gear upper cover (10) which are arranged opposite to each other, the ratchet gear upper cover (10) is provided with a circular hole a (602), and the ratchet gear lower cover (6) and the ratchet gear upper cover (10) are connected to each other via a screw (9) and a nut (11); a ratchet column a (604) is provided on the side wall of the ratchet gear lower cover (6) facing the ratchet gear upper cover (10), and a ratchet protrusion (601) is provided on the ratchet column a (604); a baffle a (603) is also provided on the side wall of the ratchet gear lower cover (6) facing the ratchet gear upper cover (10); a ratchet column b (1003) is provided on the side wall of the ratchet gear upper cover (10) facing the ratchet gear lower cover (6), and the ratchet column b (100 3) is provided with a ratchet column groove (1001), the ratchet column groove (1001) cooperates with the protrusion (601) at the ratchet pawl, and the side wall of the ratchet gear upper cover (10) facing the ratchet gear lower cover (6) is also provided with a baffle b (1002); a ratchet bevel gear (8) is provided between the ratchet gear lower cover (6) and the ratchet gear upper cover (10), and the baffle a (603) and the baffle b (1002) limit the ratchet bevel gear (8); the upper rotating component (1) also includes a ratchet gear pawl (7) arranged between the ratchet gear lower cover (6) and the ratchet bevel gear (8), and the ratchet gear pawl (7) is sleeved on the ratchet pawl column a (604) and the ratchet pawl column b (1003) to limit the rotation of the ratchet bevel gear (8).

3. The oil and gas wellhead equipment quick disassembly device according to claim 2, It is characterized in that The lower support component (5) comprises a lower stabilizing frame (29), the end of the lower stabilizing frame (29) is provided with a hole (2901), the inner wall of the hole (2901) is provided with a thread (2903), the lower stabilizing frame (29) is provided with a ratchet column (2902) along the circumference of the hole (2901), and the bottom of the hole (2901) is provided with a stabilizing pawl (28), a stabilizing ratchet (27) and a stabilizing frame lower support (26) in sequence; the stabilizing ratchet (27) comprises a rotating outer circular surface (2702) provided on the ratchet side thereof, which is used to make the stabilizing ratchet (27) rotates, a cylindrical part (2701) is provided on one side of the stabilizing ratchet (27), and the cylindrical part (2701) cooperates with the hole (2901) of the lower stabilizing frame (29); the stabilizing pawl (28) cooperates with the ratchet column (2902) to stabilize the turning of the stabilizing ratchet (27); the stabilizing frame lower support (26) is connected to the thread (2903) on the lower stabilizing frame (29) in a threaded connection manner, and the stabilizing frame lower support (26) fixes the stabilizing ratchet (27) and the stabilizing pawl (28) to the bottom of the lower stabilizing frame (29).

4. The oil and gas wellhead equipment quick disassembly device according to claim 3, It is characterized in that The upper shackle component (3) comprises an upper shackle frame (17) and a shackle cover (18); a circular hole (1705) is opened at the end of the upper shackle frame (17); a groove (1701) is arranged at the end of the upper shackle frame (17) along the circumference of the circular hole (1705); a protrusion (1801) is arranged at the bottom of the shackle cover (18); the groove (1701) and the protrusion (1801) cooperate to fix the shackle cover (18) and the upper shackle frame (17).

5. The oil and gas wellhead equipment quick disassembly device according to claim 4, It is characterized in that The rotating mechanism (2) comprises a motor component (16), one side of the motor component (16) is connected to a motor driving rod (15) for driving the motor driving rod (15) to rotate, the motor driving rod (15) is circumferentially sleeved with a driving bevel gear (14), and the rotation of the motor driving rod (15) will drive the driving bevel gear (14) to rotate; the rotating mechanism (2) also comprises a bevel gear screw (12) and a bevel gear washer (13), the bevel gear washer (13) is in contact with the driving bevel gear (14), the bevel gear screw (12) passes through the bevel gear washer (13) and is connected to the motor driving rod (15) and fixes the driving bevel gear (14) and the motor driving rod (15).

6. The oil and gas wellhead equipment quick disassembly device according to claim 5, It is characterized in that The hydraulic mechanism comprises a hydraulic cylinder housing (1702) and a hydraulic cylinder cover (20), wherein the hydraulic cylinder housing (1702) and the hydraulic cylinder cover (20) are fixedly connected by a hydraulic cylinder bolt composed of a hydraulic cylinder screw (22) and a hydraulic cylinder nut (19); a piston rod (21) and a piston (23) are arranged in the hydraulic cylinder housing (1702), wherein the piston (23) is sleeved on the end of the piston rod (21), and the piston (23) is fixedly connected to the end of the piston rod (21) by a piston screw (25) passing through a piston gasket (24), and the piston (23) is slidably connected in the hydraulic cylinder housing (1702). The other end of the piston rod (21) passes through the hydraulic cylinder cover (20) and is provided with a slide groove (2101); the ratchet gear lower cover (6) and the ratchet gear upper cover (10) are connected through a pin screw (30) and a pin nut (31); the pin screw (30) is located in the slide groove (2101) and is used to limit the ratchet gear lower cover (6) and the ratchet gear upper cover (10); the hydraulic cylinder housing (1702) is provided with an inlet (1703) and an outlet (1704); hydraulic oil flows in from the inlet (1703) and flows out from the outlet (1704) to push the piston rod (21) to move.

7. The oil and gas wellhead equipment quick disassembly device according to claim 4 or 6, It is characterized in that The tightening sleeve (4) is connected to the upper shackle frame (17) and the lower stabilizing frame (29) via threads, and the upper rotating end (401) and the lower rotating end (402) of the tightening sleeve (4) are designed as two threads with different rotation directions, so that the tightening sleeve (4) can adjust the distance between the upper shackle frame (17) and the lower stabilizing frame (29).

8. The oil and gas wellhead equipment quick disassembly device according to claim 6, It is characterized in that The circular hole a (602) is concentric with the circular hole b (1705).

9. The oil and gas wellhead equipment quick disassembly device according to claim 6, It is characterized in that The upper shackle frame (17) is provided with a threaded hole (1706), and the motor component (16) is fixedly connected to the upper shackle frame (17) by means of a motor screw (32) cooperating with the threaded hole (1706).

10. A method for disassembling a quick disassembly device for oil and gas wellhead equipment, using the quick disassembly device for oil and gas wellhead equipment as claimed in any one of claims 4 to 9, It is characterized in that The following steps are involved: The wellhead equipment quick disassembly device is moved to the bolt position of the flange plate to be disassembled, the upper detaching frame (17) and the lower stabilizing frame (29) are aligned with the nuts to be disassembled, and the tightening sleeve (4) is rotated to make the upper detaching frame (17) and the lower stabilizing frame (29) contact with the nuts on the upper and lower sides of the flange plate; the ratchet bevel gear (8) is sleeved on the nuts on the upper side of the flange plate; the ratchet bevel gear (8) and the stabilizing ratchet (27) can completely sleeve the nuts on the upper and lower sides of the flange plate; the ratchet bevel gear (8) is driven to rotate by hydraulic force; the ratchet bevel gear (8) rotates to quickly detach the nuts on the upper side of the flange plate.

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