Mandrel type casing hanger

Abstract

The utility model provides a mandrel type casing hanger, relates to casing hanger technical field, including suspension shock absorption subassembly and butt joint positioning mechanism, the both ends side of suspension shock absorption subassembly is equipped with the sheathing part of cup joint installation, the inner side of suspension shock absorption subassembly is equipped with the butt joint positioning mechanism of penetrating cup joint, and the butt joint positioning mechanism is equipped with the sleeve part of the butt joint positioning mechanism. The butt joint positioning mechanism comprises inner end ring bases, threaded strips, third nuts, an upper grooved pipe, an upper grooved ring, a lower inserted pipe and an upper inserted ring. The inner end ring bases are arranged at the two ends of the inner side of the suspension damping assembly. According to the utility model, the annular distribution structure of the inner end ring seat is mainly utilized, so that the third nut is matched with the upper threaded strip to carry out folding operation on the upper receiving groove pipe, the upper receiving groove ring, the lower receiving insertion pipe and the upper receiving insertion ring, and a plurality of groups of grooves and bulges are folded, so that lubricating oil can be effectively sealed in equipment, and the sealing effect is good. And the lubricant can be effectively prevented from overflowing, so that the anti-wear period of equipment is prolonged while the burden of a user is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of casing hangers, in particular to a mandrel type casing hanger. Background Art

[0002] Casing hangers are divided into two types: slip type and mandrel type. Slip type casing hangers are further divided into: WD type slip hanger, CG-21 type slip hanger, CG-22 type slip hanger, CG-29 type slip hanger, and can also be flexibly designed according to actual requirements and actual working conditions.

[0003] When the existing loading and unloading device is in use, as disclosed in the new model with application number CN201920676332.X, a mandrel type casing hanger includes a hanger body. An auxiliary fixing mechanism is threadedly installed at the upper end of the hanger body. Fixed threads are symmetrically opened at both ends inside the hanger body. Connecting threads are opened at the upper end of the hanger body. A fixing ring is installed at the bottom end of the auxiliary fixing mechanism. Adjusting threads are evenly and symmetrically opened at the upper end of the fixing ring. Telescopic holes are evenly and symmetrically opened inside the fixing ring. A clamping device is installed inside the fixing ring. A fixed limit block is installed in the clamping device. A threaded adjustment main body is rotatably inserted into the upper end of the fixed limit block in a threaded manner. One end of the fixed limit block is movably clamped with a clamping main body. A telescopic rod is installed in the clamping main body. One end of the telescopic rod is connected with an adjusting sphere. However, in the above technology, during the use process, the phenomenon of lubricating oil overflow will occur. After long-term use, it is easy to wear too fast. Therefore, the present utility model proposes a mandrel type casing hanger to solve the problems existing in the prior art. Summary of the Utility Model

[0004] In view of the above problems, the present utility model proposes a mandrel type casing hanger. The mandrel type casing hanger mainly utilizes the annular distribution structure of the inner end ring seat, so that the third nut cooperates with the threaded bar to perform the alignment operation on the upper receiving groove pipe, the upper receiving groove ring, the lower receiving insertion pipe and the upper receiving insertion ring. Since it is the alignment of multiple groups of grooves and protrusions, the lubricating oil can be effectively sealed inside the device, effectively avoiding the overflow of lubricant, thereby reducing the user's burden while increasing the anti-wear period of the device.

[0005] To achieve the purpose of the present utility model, the present utility model is realized through the following technical solutions: A mandrel type casing hanger includes a suspension damping component and a docking and positioning mechanism. Sleeve components are sleeved and installed on both endsides of the suspension damping component. The docking and positioning mechanism is penetrated and sleeved on the inner side of the suspension damping component;

[0006] The docking and positioning mechanism includes an inner end ring seat, a threaded bar, a third nut, an upper receiving groove tube, an upper receiving groove ring, a lower receiving insertion tube, and an upper receiving insertion ring. The inner end ring seat is arranged at both inner side ends of the suspension damping assembly. A threaded bar is arranged on the inner side of the inner end ring seat, and a third nut assembled by a bolt is arranged at the outer end of the threaded bar. A group of inner ends of the threaded bar are provided with an upper receiving groove tube connected by threads, and the other group of inner ends of the threaded bar are provided with a lower receiving insertion tube connected by threads. An upper receiving groove ring is arranged on the inner side of the inner end of the upper receiving groove tube, and an upper receiving insertion ring is arranged on the inner side of the inner end of the lower receiving insertion tube.

[0007] As a preferred embodiment of the present invention, the threaded bars are annularly distributed around the central axis of the inner end ring seat.

[0008] As a preferred embodiment of the present invention, the suspension damping assembly includes a binding joint seat, an elastic rod group, a suspension ring, a threaded rod group, a first nut, and a middle sleeve. The inner end of the binding joint seat is provided with an elastic rod group, and the inner end of the elastic rod group is provided with a suspension ring.

[0009] As a preferred embodiment of the present invention, a threaded rod group is arranged on the inner side of the suspension ring, a first nut connected by a bolt is arranged on the outer side of the threaded rod group, and a middle sleeve is arranged at the inner end of the threaded rod group.

[0010] As a preferred embodiment of the present invention, the sleeved component includes an end tube sleeve, an assembly disc, a threaded bayonet, a threaded base, a fixing screw, and a second nut. The middle of the end tube sleeve is sleeved and connected to both ends of the middle sleeve. An assembly disc assembled by a bolt is arranged on the outer side of the end tube sleeve, and a threaded bayonet is arranged on the outer side of the assembly disc.

[0011] As a preferred embodiment of the present invention, threaded bases are arranged on both side ends of the end tube sleeve, a fixing screw connected by threads is arranged on the inner side of the threaded base, and second nuts assembled by bolts are arranged at both ends of the fixing screw.

[0012] The beneficial effects of the present invention are as follows:

[0013] The present invention mainly utilizes the annular distribution structure of the inner end ring seat, so that the third nut cooperates with the threaded bar to perform the alignment operation on the upper receiving groove tube, the upper receiving groove ring, the lower receiving insertion tube, and the upper receiving insertion ring. Since it is the alignment of multiple groups of grooves and protrusions, the lubricating oil can be effectively sealed inside the equipment, effectively avoiding the overflow of the lubricant, thereby reducing the user's burden and at the same time increasing the anti-wear period of the equipment. Description of the Drawings

[0014] Figure 1 It is a three-dimensional structure diagram of the present invention;

[0015] Figure 2 This is a bottom-up three-dimensional structural schematic diagram of the utility model;

[0016] Figure 3 It is a three-dimensional structural schematic diagram of the set components of the utility model;

[0017] Figure 4 It is a three-dimensional structural diagram of the docking positioning mechanism of the utility model;

[0018] Figure 5 It is a schematic diagram of the three-dimensional structure of the lower receiving insert tube and the upper receiving insert ring of the utility model.

[0019] Wherein: 1. suspension shock absorption assembly; 101. binding joint seat; 102. elastic rod group; 103. suspension ring; 104. threaded rod group; 105. first nut; 106. middle sleeve; 2. set parts; 201. end sleeve; 202. assembly plate; 203. threaded bayonet; 204. threaded base; 205. fixing screw; 206. second nut; 3. docking positioning mechanism; 301. inner end ring seat; 302. threaded strip; 303. third nut; 304. upper grooved tube; 305. upper grooved ring; 306. lower insert tube; 307. upper insert ring. DETAILED DESCRIPTION

[0020] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with an embodiment. The embodiment is only used to explain the present invention and does not constitute a limitation on the protection scope of the present invention.

[0021] according to Figures 1-5 As shown, this embodiment proposes a mandrel-type casing hanger, including a suspension damping component 1 and a docking positioning mechanism 3, wherein both ends of the suspension damping component 1 are provided with sleeve-mounted set components 2, and the inner side of the suspension damping component 1 is provided with a through-sleeve docking positioning mechanism 3;

[0022] The docking and positioning mechanism 3 includes an inner end ring seat 301, a threaded strip 302, a third nut 303, an upper grooved tube 304, an upper grooved ring 305, a lower insert tube 306 and an upper insert ring 307. The inner end ring seat 301 is arranged at both ends of the inner side of the suspension shock absorber component 1, the inner side of the inner end ring seat 301 is provided with a threaded strip 302, and the outer end of the threaded strip 302 is provided with a third nut 303 assembled with bolts, one group of inner ends of the threaded strip 302 is provided with a threaded upper grooved tube 304, the other group of inner ends of the threaded strip 302 is provided with a threaded lower insert tube 306, the inner side of the inner end of the upper grooved tube 304 is provided with an upper grooved ring 305, and the inner side of the inner end of the lower insert tube 306 is provided with an upper insert ring 307.

[0023] The thread strips 302 are distributed in a ring shape around the center axis of the inner end ring seat 301 .

[0024] In this embodiment, when in use, the inner end ring seats 301 are arranged on the inner sides of both ends of the middle sleeve 106, so that after the spiral movement of the threaded bars 302, the upper receiving groove tube 304 and the lower receiving insertion tube 306 move towards each other. After the opposite movement, the upper receiving groove tube 304 and the upper receiving groove ring 305, as well as the lower receiving insertion tube 306 and the upper receiving insertion ring 307, are tightly engaged, enabling the mandrel to have an effective docking effect to avoid the overflow of materials.

[0025] The suspension damping assembly 1 includes a binding joint seat 101, an elastic rod group 102, a suspension ring 103, a threaded rod group 104, a first nut 105, and a middle sleeve 106. The inner end of the binding joint seat 101 is provided with an elastic rod group 102, and the inner end of the elastic rod group 102 is provided with a suspension ring 103.

[0026] In this embodiment, after the installation of the suspension ring 103, the threaded rod group 104, and the first nut 105 is completed, the binding joint seat 101 at the outer end of the elastic rod group 102 is adaptively bound to achieve the damping effect during suspension.

[0027] The inner side of the suspension ring 103 is provided with a threaded rod group 104, and the outer side of the threaded rod group 104 is provided with a first nut 105 connected by bolts. The inner end of the threaded rod group 104 is provided with a middle sleeve 106.

[0028] In this embodiment, when suspension is required, the threaded rod group 104 arranged on the outer side of the middle sleeve 106 is bolt-fixed with the first nut 105, and after the bolt fixation, the suspension ring 103 is arranged on the outer side of the threaded rod group 104.

[0029] The sleeve assembly 2 includes an end pipe sleeve 201, an assembly disc 202, a threaded bayonet 203, a threaded base 204, a fixing screw 205, and a second nut 206. The middle of the end pipe sleeve 201 is sleeved and connected to both ends of the middle sleeve 106. The outer side of the end pipe sleeve 201 is provided with an assembly disc 202 connected by bolts, and the outer side of the assembly disc 202 is provided with a threaded bayonet 203.

[0030] In this embodiment, then the assembly disc 202 is bolt-connected to the outer side of the end pipe sleeve 201, so that the threaded bayonet 203 sleeved and connects the outside of the mandrel.

[0031] Both ends of the end pipe sleeve 201 are provided with threaded bases 204, and the inner side of the threaded bases 204 is provided with fixing screws 205 connected by threads. Both ends of the fixing screws 205 are provided with second nuts 206 connected by bolts.

[0032] In this embodiment, the end pipe sleeve 201 is then sleeved and fixed at both ends of the middle sleeve 106. After the sleeved installation, the fixing screw 205, the second nut 206 and the threaded base 204 are used to achieve the effect of connecting both ends.

[0033] The working principle of this mandrel type casing hanger is as follows: When in use, the inner end ring seat 301 is arranged on the inner sides of both ends of the middle sleeve 106, so that after the spiral movement of the threaded strip 302, the upper receiving groove pipe 304 and the lower receiving insertion pipe 306 move towards each other. After the opposite movement, the upper receiving groove pipe 304 and the upper receiving groove ring 305, as well as the lower receiving insertion pipe 306 and the upper receiving insertion ring 307, are tightly fitted together, enabling the mandrel to have an effective docking effect to avoid the overflow of materials. Then, the assembly disc 202 is bolted to the outer side of the end pipe sleeve 201, so that the threaded bayonet 203 sleeves and connects the outside of the mandrel. Then, the end pipe sleeve 201 is sleeved and fixed at both ends of the middle sleeve 106. After the sleeved installation, the fixing screw 205, the second nut 206 and the threaded base 204 are used to achieve the effect of connecting both ends. When suspension is required, the threaded rod group 104 is arranged on the outer side of the middle sleeve 106 and bolted with the first nut 105. After the bolt fixing, a suspension ring 103 is arranged on the outer side of the threaded rod group 104. After the suspension ring 103, the threaded rod group 104 and the first nut 105 are installed, the binding joint seat 101 at the outer end of the elastic rod group 102 is adaptively bound to achieve the effect of shock absorption during the suspension process.

[0034] The above has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A mandrel-type casing hanger, comprising a suspension damping assembly (1) and a docking positioning mechanism (3), characterized in that: Both end sides of the suspension shock absorbing component (1) are provided with sleeve-mounted fitting components (2), and the inner side of the suspension shock absorbing component (1) is provided with a sleeve-through docking positioning mechanism (3); The docking positioning mechanism (3) comprises an inner end ring seat (301), a threaded strip (302), a third nut (303), an upper grooved tube (304), an upper grooved ring (305), a lower insert tube (306) and an upper insert ring (307); the inner end ring seat (301) is arranged at both ends of the inner side of the suspension shock absorbing component (1); the inner side of the inner end ring seat (301) is provided with a threaded strip (302), and the threaded strip ( The outer end of the threaded strip (302) is provided with a third nut (303) assembled with a bolt, one group of inner ends of the threaded strip (302) is provided with an upper grooved tube (304) threadedly connected, and the other group of inner ends of the threaded strip (302) is provided with a lower insert tube (306) threadedly connected, an upper grooved ring (305) is provided on the inner side of the inner end of the upper grooved tube (304), and an upper insert ring (307) is provided on the inner side of the inner end of the lower insert tube (306).

2. The mandrel type casing hanger according to claim 1, characterized in that: The thread strips (302) are distributed in a ring shape around the central axis of the inner end ring seat (301).

3. The mandrel type casing hanger according to claim 1, characterized in that: The suspension shock-absorbing assembly (1) comprises a binding joint seat (101), an elastic rod group (102), a suspension ring (103), a threaded rod group (104), a first nut (105) and a middle sleeve (106); the inner end of the binding joint seat (101) is provided with the elastic rod group (102), and the inner end of the elastic rod group (102) is provided with the suspension ring (103).

4. The mandrel type casing hanger according to claim 3, characterized in that: A threaded rod group (104) is arranged on the inner side of the suspension ring (103), a first nut (105) connected by bolts is arranged on the outer side of the threaded rod group (104), and a middle sleeve (106) is arranged at the inner end of the threaded rod group (104).

5. The mandrel type casing hanger according to claim 3, characterized in that: The set component (2) comprises an end pipe sleeve (201), an assembly disk (202), a threaded bayonet (203), a threaded base (204), a fixing screw (205) and a second nut (206); the middle portion of the end pipe sleeve (201) is sleeved and connected to the two ends of the middle sleeve (106); the outer side of the end pipe sleeve (201) is provided with an assembly disk (202) assembled with bolts, and the outer side of the assembly disk (202) is provided with a threaded bayonet (203).

6. The mandrel type casing hanger according to claim 5, characterized in that: The end sleeve (201) is provided with a threaded base (204) at both ends, and a threaded fixing screw (205) is provided on the inner side of the threaded base (204), and second nuts (206) assembled with bolts are provided at both ends of the fixing screw (205).

Images