Hanging ring tilting device and top drive drilling system

Abstract

The invention relates to a lifting ring tilting device and a top drive drilling system, the lifting ring tilting device comprises a rotating head, a fixing assembly, an oil cylinder assembly and two lifting rings, the two lifting rings are oppositely installed on the two sides of the rotating head, and the upper ends of the two lifting rings are rotationally connected with the rotating head; the fixing assembly is fixedly installed on the rotating head, and the oil cylinder assembly is fixedly installed on the fixing assembly, rotationally connected with the two lifting rings through the inclining assembly and used for driving the two lifting rings to incline. The tilting device has the beneficial effects that the structure is compact, the design is reasonable, the lifting capacity of the tilting device can be improved, and the problem that the boundary dimension of an existing tilting device is increased along with the increase of the bearing capacity is effectively solved.

Description

Technical Field

[0001] The invention relates to the technical field of oil drilling equipment, in particular to a lifting ring tilting device and a top drive drilling system. Background Art

[0002] The top drive drilling system (referred to as "top drive") has become a standard product for modern drilling operations. The top drive consists of a power swivel and a pipe handling device. As one of the important components of the pipe handling device, the lifting ring tilting mechanism is used for drilling operations. It can realize the forward and backward tilting of the lifting ring to reach the mouse hole to grab a single drill pipe or aim at the second-layer drill pipe discharge rack to grab and release the drill pipe, or push the bottom of the elevator to a high enough position to ensure the normal drilling of the top drive. As domestic oil and gas exploration continues to advance into deep and ultra-deep layers, high-yield oil and gas flows have been discovered in ultra-deep layers in many regions, creating a new field for exploration and development. Domestic deep well drilling records are also constantly being broken. The research on the top drive device for the 10,000-meter ultra-deep well drilling rig has become an inevitable demand for the development of my country's oil and gas exploration and development into ultra-deep layers. The 10,000-meter drilling rig has put forward the requirements for the supporting top drive to have a large lifting load and the external dimensions to meet the derrick space.

[0003] At present, there are two ways of conventional top drive lifting ring tilting mechanism. One is that the oil cylinder is directly connected to the lifting ring through a connector. In this case, the angle between the oil cylinder and the lifting ring is small, the component force on the lifting ring is small, the connector and the lifting ring are prone to slip, and the oil cylinder is easily bent, stuck, and damaged. The other is that the oil cylinder does not directly transmit the force to the lifting ring. This method is divided into two types. One is that the intermediate connector is fastened to the lifting ring, and the force arm acting on the lifting ring is fixed. To drive the force of a larger load or when the tilt angle of the lifting ring increases, the thrust of the oil cylinder needs to be continuously increased, which is easy to cause damage to the oil cylinder. The other method is that the connector acting on the lifting ring is movable. Although the thrust of the oil cylinder has increased, in this case, when the oil cylinder is installed horizontally, the outer dimensions of the tilting mechanism are large. In order to meet the requirements of the rated load of the 10,000-meter top drive, the size of the oil cylinder will be larger, and the size of the tilting mechanism will also increase accordingly, which cannot guarantee that the space restrictions of the derrick can be met. Summary of the invention

[0004] The invention provides a lifting ring tilting device and a top drive drilling system, aiming to solve the problems in the prior art.

[0005] The technical solution of the present invention to solve the above technical problems is as follows:

[0006] A lifting ring tilting device comprises a rotating head, a cylinder assembly and two lifting rings, wherein the two lifting rings are relatively mounted on both sides of the rotating head, and the upper ends of the two lifting rings are rotatably connected to the rotating head respectively; the cylinder assembly is fixedly mounted on the rotating head, and is rotatably connected to the two lifting rings through the tilting assembly respectively, so as to drive the two lifting rings to tilt.

[0007] The beneficial effects of the present invention are as follows: during use, the rotating head is installed on the top drive body, two lifting rings are hung on the lifting ears on both sides of the rotating head, the cylinder assembly is connected to the tilting assembly, the lifting ring is driven to tilt, the driving action of the cylinder assembly is on the lifting ring, and the lifting load of the front and rear tilting is endured, and the operation is convenient.

[0008] The invention has a compact structure and a reasonable design, can improve the lifting capacity of the tilting device, and effectively solves the problem that the external dimensions of the existing tilting device increase with the increase of the carrying capacity.

[0009] Based on the above technical solution, the present invention can also be improved as follows.

[0010] Furthermore, it also includes a fixing component, which includes a cylinder support, and the cylinder support is fixedly installed on the rotating head; the cylinder component is installed on the cylinder support.

[0011] The beneficial effects of adopting the above-mentioned further scheme are simple structure and reasonable design. The fixed assembly is used to fix the cylinder assembly and transmit the force acting on the cylinder assembly when the lifting ring tilts forward and backward to the rotating head. At the same time, the cylinder assembly is fixedly installed using the cylinder support, which is convenient for assembly and ensures the stability of the cylinder assembly operation.

[0012] Furthermore, the oil cylinder assembly includes two oil cylinders, which are relatively fixedly mounted on the oil cylinder support, with their telescopic ends pointing vertically downward and rotatably connected to the two lifting rings through the two tilting assemblies respectively.

[0013] The beneficial effect of adopting the above further solution is that the two oil cylinders are reasonably designed, and they drive the two lifting rings to tilt forward and backward through the two tilting components respectively, which makes the operation convenient.

[0014] Furthermore, a plurality of sliding blocks are evenly spaced and fixedly mounted on the oil cylinder support, and a plurality of grooves are formed between the plurality of sliding blocks and the oil cylinder support; and the two oil cylinders are respectively mounted in the two grooves located at the two ends.

[0015] The beneficial effect of adopting the above further solution is that the multiple sliding blocks are reasonably designed, and they form multiple grooves with the cylinder support to facilitate the installation of the cylinder and limit the cylinder, thereby increasing the stability of the cylinder assembly.

[0016] Furthermore, a support frame is fixedly mounted on the oil cylinder support, and also includes a synchronization component, the synchronization component is mounted on the support frame, and the two tilting components are relatively mounted on the synchronization component.

[0017] The beneficial effects of adopting the above further scheme are simple structure and reasonable design. The above support frame supports the cylinder support so that the cylinder can withstand a large tonnage lifting load; in addition, the synchronization component makes the two cylinders bear the same force, ensuring the synchronous movement of the two cylinders.

[0018] Furthermore, the support frame is in the shape of a quadrangular pyramid, an upper end of which is fixedly connected to the oil cylinder support, and a lower end of which is fixedly connected to the synchronization component.

[0019] The beneficial effect of adopting the above further solution is that the shape of the support frame is reasonably designed, which can enable the cylinder to withstand a large tonnage lifting load without affecting the operation of the cylinder.

[0020] Furthermore, the synchronization component includes a synchronization frame and a synchronization shaft, the synchronization frame is fixedly mounted on the support frame; the synchronization shaft is horizontally rotatably mounted on the synchronization frame; and the two tilting components are fixedly connected to both ends of the synchronization shaft respectively.

[0021] The beneficial effects of adopting the above further solution are simple structure, reasonable design, and ensuring synchronous movement of the two cylinders.

[0022] Furthermore, each tilting assembly includes a crank, the upper end of which is fixedly connected to the corresponding synchronization shaft, and the upper end of which is rotationally connected to the telescopic end of the corresponding cylinder through an upper connecting rod; the lower end of the crank is slidably connected to the corresponding lifting ring through a lower connecting rod.

[0023] The beneficial effects of adopting the above further solution are simple structure and reasonable design, and the oil cylinder can realize the front and rear tilting of the lifting ring by utilizing the special shape of the crank.

[0024] Furthermore, the lower connecting rod is in rolling cooperation with the lifting ring through a roller seat.

[0025] The beneficial effects of adopting the above further solution are simple structure and reasonable design. The design of the roller seat can reduce the friction between the lower connecting rod and the lifting ring and reduce wear.

[0026] The present invention also relates to a top drive drilling system, comprising the lifting ring tilting device as described above.

[0027] The beneficial effect of adopting the above further scheme is that the present invention also provides a top drive drilling system, which has a compact structure and a reasonable design, can improve the lifting capacity of the tilting device, and effectively solves the problem that the external dimensions of the existing tilting device increase with the increase of the load-bearing capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2It is a schematic diagram of the structure of the fixing component in the present invention;

[0030] Figure 3 It is a structural schematic diagram of the synchronization component in the present invention;

[0031] Figure 4 It is a schematic diagram of the structure of the tilting assembly in the present invention.

[0032] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0033] 1. Rotating head; 2. Lifting ring; 3. Fixed assembly; 3.1. Cylinder support; 3.2. Sliding block; 3.3. Support frame; 4. Cylinder; 5. Synchronous assembly; 5.1. Synchronous frame; 5.2. Synchronous shaft; 6. Tilt assembly; 6.1. Crank; 6.2. Lower connecting rod; 6.3. Roller seat; 6.4. Upper connecting rod. DETAILED DESCRIPTION

[0034] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0037] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0038] Example 1

[0039] like Figures 1 to 4 As shown, this embodiment provides a lifting ring tilting device, including a rotating head 1, a fixing component 3, a cylinder component and two lifting rings 2, the two lifting rings 2 are relatively installed on both sides of the rotating head 1, and the upper ends thereof are rotatably connected to the rotating head 1 respectively; the fixing component 3 is fixedly installed on the rotating head 1, and the cylinder component is fixedly installed on the fixing component 3, which is rotatably connected to the two lifting rings 2 through the tilting components 6 respectively, so as to drive the two lifting rings 2 to tilt.

[0040] During use, the rotating head 1 is installed on the top drive body, and the two lifting rings 2 are hung on the lifting ears on both sides of the rotating head 1. The fixing assembly 3 is used to fix the cylinder assembly and transmit the force acting on the cylinder assembly when the lifting ring 2 tilts forward and backward to the rotating head 1. The cylinder assembly is connected to the tilting assembly 6 to drive the lifting ring 2 to tilt. The driving action of the cylinder assembly is on the lifting ring to bear the lifting load of tilting forward and backward, and the operation is convenient.

[0041] Preferably, in this embodiment, the rotating head 1 is a cylindrical structure.

[0042] In addition, each of the above-mentioned hanging rings 2 is in the shape of a long rod, and circular rings are respectively provided at both ends thereof.

[0043] This embodiment has a compact structure and a reasonable design, can improve the lifting capacity of the tilting device, and effectively solves the problem that the external dimensions of the existing tilting device increase with the increase of the load-bearing capacity.

[0044] Example 2

[0045] On the basis of Example 1, in this embodiment, the fixing assembly 3 comprises a cylinder support 3.1, and the cylinder support 3.1 is fixedly mounted on the rotating head 1; the cylinder assembly is mounted on the cylinder support 3.1.

[0046] The solution has a simple structure and a reasonable design. The oil cylinder assembly is fixedly installed by using the oil cylinder support 3.1, which is convenient to assemble and ensures the stability of the operation of the oil cylinder assembly.

[0047] Preferably, in this embodiment, the oil cylinder support 3 . 1 is preferably a rectangular plate structure, which is located on the same side of the two lifting rings 2 .

[0048] Example 3

[0049] On the basis of Example 2, in this embodiment, the cylinder assembly includes two cylinders 4, and the two cylinders 4 are relatively fixedly installed on the cylinder support 3.1, with their telescopic ends vertically downward and rotatably connected to the two lifting rings 2 through the two tilting components 6 respectively.

[0050] The two oil cylinders 4 are reasonably designed and can respectively drive the two lifting rings 2 to tilt forward and backward through the two tilting components 6, making the operation convenient.

[0051] Example 4

[0052] On the basis of Example 3, in this embodiment, a plurality of sliding blocks 3.2 are evenly spaced and fixedly installed on the cylinder support 3.1, and a plurality of grooves are formed between the plurality of sliding blocks 3.2 and the cylinder support 3.1; the two cylinders 4 are respectively installed in the two grooves located at both ends.

[0053] The multiple sliding blocks 3.2 are reasonably designed, and form multiple grooves with the oil cylinder support 3.1, so as to install the oil cylinder 4, limit the oil cylinder 4, and increase the stability of the assembly of the oil cylinder 4.

[0054] Preferably, in this embodiment, each sliding block 3.2 is preferably a rectangular plate structure.

[0055] Preferably, in this embodiment, there are preferably three sliding blocks 3.2, and the three sliding blocks 3.2 are evenly spaced and distributed along the direction from one end to the other end of the cylinder support 3.1, and are respectively distributed perpendicular to the cylinder support 3.1.

[0056] Example 5

[0057] On the basis of any one of Examples 3 to 4, in this embodiment, a support frame 3.3 is fixedly mounted on the cylinder support 3.1, and also includes a synchronization component 5, the synchronization component 5 is mounted on the support frame 3.3, and the two tilting components 6 are relatively mounted on the synchronization component 5.

[0058] This solution has a simple structure and a reasonable design. The support frame 3.3 supports the cylinder support 3.1, so that the cylinder 4 can withstand a large tonnage lifting load; in addition, the synchronization component 5 makes the two cylinders 4 bear the same force, ensuring that the two cylinders 4 move synchronously.

[0059] Example 6

[0060] On the basis of Example 5, in this embodiment, the support frame 3.3 is in the shape of a quadrangular pyramid, the upper end of which is fixedly connected to the cylinder support 3.1, and the lower end of which is fixedly connected to the synchronization component 5.

[0061] The shape of the support frame 3.3 is reasonably designed, which can enable the oil cylinder 4 to withstand a large tonnage lifting load without affecting the operation of the oil cylinder 4.

[0062] Example 7

[0063] Based on any one of Examples 5 to 6, in this embodiment, the synchronization component 5 includes a synchronization frame 5.1 and a synchronization shaft 5.2, the synchronization frame 5.1 is fixedly mounted on the support frame 3.3; the synchronization shaft 5.2 is horizontally rotatably mounted on the synchronization frame 5.1; and the two tilting components 6 are respectively fixedly connected to the two ends of the synchronization shaft 5.2.

[0064] This solution has a simple structure and reasonable design, and ensures that the two cylinders move synchronously.

[0065] Based on the above solution, the synchronous frame 5 . 1 is located between the two oil cylinders 4 .

[0066] Example 8

[0067] On the basis of Example 7, in this embodiment, each of the tilting components 6 includes a crank 6.1, the upper end of which is fixedly connected to the corresponding synchronization shaft 5.2, and the upper end of which is rotationally connected to the telescopic end of the corresponding cylinder 4 through an upper connecting rod 6.4; the lower end of the crank 6.1 is slidably connected to the corresponding lifting ring 2 through a lower connecting rod 6.2.

[0068] This solution has a simple structure and a reasonable design. The oil cylinder 4 can realize the front and rear tilting of the lifting ring 2 by utilizing the special shape of the crank 6.1.

[0069] Preferably, in this embodiment, the crank 6.1 is preferably an arc-shaped plate-like structure.

[0070] In addition, the upper connecting rod 6.4 is thick at one end and thin at the other end, wherein the thick end is fixedly connected to the upper end of the crank 6.1, and the thin end is rotatably connected to the telescopic end of the corresponding oil cylinder 4.

[0071] It should be noted that the attached Figure 1 The synchronization component 5 in the attached Figure 3 The directions of the synchronous assembly 5 are opposite, the two ends of the synchronous shaft 5.2 are connected to the upper ends of the two cranks 6.1, and the telescopic ends of the two oil cylinders 4 are rotatably connected to the corresponding ends of the two upper connecting rods 6.4 at the upper ends of the two cranks 6.1.

[0072] Example 9

[0073] On the basis of Example 8, in this embodiment, the lower connecting rod 6.2 is rollingly matched with the hanging ring 2 through a roller seat 6.3.

[0074] This solution has a simple structure and a reasonable design. The design of the roller seat 6.3 can reduce the friction between the lower connecting rod 6.2 and the lifting ring 2, thereby reducing wear.

[0075] Preferably, in this embodiment, each of the roller seats 6.3 is a frame-shaped structure.

[0076] In addition, two rollers are installed in each roller seat 6.3 for relative rotation, and the lifting ring 2 passes through the roller seat 6.3 and is located between the two rollers, and is rotationally fitted with the two rollers to reduce wear between the lifting ring 2 and the roller seat 6.3.

[0077] Example 10

[0078] On the basis of the above embodiments, this embodiment further provides a top drive drilling system, comprising the lifting ring tilting device as described above.

[0079] This embodiment also provides a top drive drilling system, which has a compact structure and a reasonable design, can improve the lifting capacity of the tilting device, and effectively solves the problem that the external dimensions of the existing tilting device increase with the increase of the load-bearing capacity.

[0080] The working principle of the present invention is as follows:

[0081] During use, the rotating head 1 is installed on the top drive body, and the two lifting rings 2 are hung on the lifting ears on both sides of the rotating head 1. The fixing assembly 3 is used to fix the cylinder assembly and transmit the force acting on the cylinder assembly when the lifting ring 2 tilts forward and backward to the rotating head 1. The cylinder assembly is connected to the tilting assembly 6 to drive the lifting ring 2 to tilt. The driving action of the cylinder assembly is on the lifting ring to bear the lifting load of tilting forward and backward, and the operation is convenient.

[0082] In addition, the operating principle of the lifting ring tilting device of the above structure is as follows: (1) The oil cylinder is installed vertically, the force is good, it can withstand large loads, and the structure is compact; (2) When the lifting ring is tilted forward, the oil cylinder piston extends axially, the force is maximum, there is no component force, the tilting device slides relative to the lifting ring, the lever arm changes, when it needs to withstand a large load, the lever arm becomes larger, when it needs to withstand a small load, the lever arm becomes smaller, the force of the tilting device is good, and it is easier to drive the lifting ring to tilt forward; (3) When the lifting ring is tilted backward, the oil cylinder piston retracts axially, the force is maximum, there is no component force, the tilting device slides relative to the lifting ring, the lever arm changes, when it needs to withstand a large load, the lever arm becomes larger, when it needs to withstand a small load, the lever arm becomes smaller, the force of the tilting device is good, and it is easier to drive the lifting ring to tilt backward; (4) The upper end of the oil cylinder is fixed to the rotating head, and no rotation occurs during operation, the force is good, and the safety is high; (5) The supporting device connects the two tilting devices to make the lifting rings work synchronously and extend their service life.

[0083] The lifting ring tilting device provided by the present invention is designed to maximize the load lifting capacity of the oil cylinder, synchronize the lifting ring movement, and has a compact structure.

[0084] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0085] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0086] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A lifting ring tilting device, characterized in that: It comprises a rotating head (1), a cylinder assembly and two lifting rings (2), wherein the two lifting rings (2) are relatively mounted on both sides of the rotating head (1), and their upper ends are rotatably connected to the rotating head (1); the cylinder assembly is fixedly mounted on the rotating head (1), and is rotatably connected to the two lifting rings (2) via a tilting assembly (6), so as to drive the two lifting rings (2) to tilt.

2. The lifting ring tilting device according to claim 1, characterized in that: It also comprises a fixing assembly (3), wherein the fixing assembly (3) comprises a cylinder support (3.1), wherein the cylinder support (3.1) is fixedly mounted on the rotating head (1); and the cylinder assembly is mounted on the cylinder support (3.1).

3. The lifting ring tilting device according to claim 2, characterized in that: The oil cylinder assembly comprises two oil cylinders (4), which are relatively fixedly mounted on the oil cylinder support (3.1), with their telescopic ends pointing vertically downward and rotatably connected to the two lifting rings (2) via the two tilting assemblies (6) respectively.

4. The lifting ring tilting device according to claim 3, characterized in that: A plurality of sliding blocks (3.2) are evenly spaced and fixedly mounted on the oil cylinder support (3.1); a plurality of grooves are formed between the plurality of sliding blocks (3.2) and the oil cylinder support (3.1); and the two oil cylinders (4) are respectively mounted in the two grooves located at the two ends.

5. The lifting ring tilting device according to claim 3, characterized in that: The oil cylinder support (3.1) is also fixedly mounted with a support frame (3.3), and also includes a synchronization component (5), wherein the synchronization component (5) is mounted on the support frame (3.3), and the two tilting components (6) are relatively mounted on the synchronization component (5).

6. The lifting ring tilting device according to claim 5, characterized in that: The support frame (3.3) is in the shape of a quadrangular pyramid, the upper end of which is fixedly connected to the oil cylinder support (3.1), and the lower end of which is fixedly connected to the synchronization component (5).

7. The lifting ring tilting device according to claim 5, characterized in that: The synchronization component (5) comprises a synchronization frame (5.1) and a synchronization shaft (5.2); the synchronization frame (5.1) is fixedly mounted on the support frame (3.3); the synchronization shaft (5.2) is horizontally rotatably mounted on the synchronization frame (5.1); and the two tilting components (6) are respectively fixedly connected to the two ends of the synchronization shaft (5.2).

8. The lifting ring tilting device according to claim 7, characterized in that: Each tilting assembly (6) comprises a crank (6.1), the upper end of which is fixedly connected to the corresponding synchronous shaft (5.2), and the upper end of which is rotationally connected to the telescopic end of the corresponding oil cylinder (4) via an upper connecting rod (6.4); the lower end of the crank (6.1) is slidingly connected to the corresponding lifting ring (2) via a lower connecting rod (6.2).

9. The lifting ring tilting device according to claim 8, characterized in that: The lower connecting rod (6.2) is in rolling cooperation with the lifting ring (2) via a roller seat (6.3).

10. A top drive drilling system, characterized in that: It comprises a lifting ring tilting device as described in any one of claims 1 to 9.

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