Overhead traveling multi-pipe column transportation device

Abstract

The present invention discloses a gantry-type multi-pipe column transporting device, which includes a power catwalk. Tracks are provided at both ends of the power catwalk, and the two tracks are parallel to each other. A traveling mechanism is arranged on the tracks, and a pipe lifting mechanism is arranged on the traveling mechanism. The problems of large manual labor intensity and many preparatory works in the prior art are solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of oil drilling rigs and workover equipment, and relates to a gantry-type multi-pipe string transfer device. Background Art

[0002] During the drilling and workover operations, with the popularization, application and continuous optimization of technologies and products such as power catwalks (pipe conveyors), the transportation operation of pipe strings between the pipe racks of the power catwalk (pipe conveyor) and the wellhead can be fully automated, greatly improving the operation efficiency and safety. However, the pipe racks of power catwalks (pipe conveyors) are usually short and cannot store various pipe strings in large quantities. The pipe strings still need to be stored in the pipe yard (conventional pipe rack), and the transfer process from the pipe yard (conventional pipe rack) to the pipe rack of the power catwalk (pipe conveyor) needs to be assisted by a crane or a forklift, etc., resulting in low operation efficiency, long cycle and low safety.

[0003] In response to this problem, most domestic well teams are equipped with equipment such as hydraulic pipe racks or power drill pipe boxes. However, such equipment mainly relies on simple deflecting actions to cause the pipe strings to roll to complete the transfer operation of the pipe strings. The rolling of the pipe strings is uncontrollable, and phenomena such as rolling deviation are likely to occur, affecting subsequent operations. A small number of manufacturers adopt the form of a conventional drill pipe box + an electromagnet gantry crane to overcome the uncontrollable situation of pipe string rolling. However, this solution has the following problems: 1. When there are more pipe strings, the number of drill pipe boxes also increases, and the number of transportation units increases; 2. This solution has relatively complex control and high costs; 3. The requirements for pipe string arrangement are relatively high, and pipe strings such as drill pipes need to be placed in the drill pipe box in advance, and there is a lot of preparatory work in the early stage. Summary of the Invention

[0004] The purpose of the present invention is to provide a gantry-type multi-pipe string transfer device, which solves the problems of large manual labor intensity and a lot of preparatory work in the prior art.

[0005] The technical solution adopted by the present invention is that the gantry-type multi-pipe string transfer device includes a power catwalk. Tracks are provided at both ends of the power catwalk. The two tracks are parallel to each other. A traveling mechanism is arranged on the tracks, and a pipe lifting mechanism is arranged on the traveling mechanism.

[0006] The characteristics of the present invention also lie in that:

[0007] The traveling mechanism includes a gantry. Two traveling rollers are arranged at the bottom of both sides of the gantry. The traveling rollers match the tracks. A traveling drive assembly is arranged on one or more of the traveling rollers, and the traveling drive assembly is fixedly connected to the gantry.

[0008] The pipe lifting mechanism includes a driving winch assembly, which is fixed to a traveling frame. Two self-locking conveying arms are provided on the traveling frame. A steel wire rope I is connected to the driving winch assembly. One end of the steel wire rope I is wound around the driving winch assembly drum. The other end of the steel wire rope I is connected to a steel wire rope connecting ring. The steel wire rope connecting ring is connected to steel wire rope II and steel wire rope III. One end of the steel wire rope II is connected to the steel wire rope connecting ring. The other end of the steel wire rope II is connected to a self-locking conveying arm. One end of the steel wire rope III is connected to the steel wire rope connecting ring. The other end of the steel wire rope III is connected to another self-locking conveying arm.

[0009] A plurality of pulley assemblies are provided between the driving winch assembly and the steel wire rope connecting ring, and between the steel wire rope connecting ring and the two self-locking conveying arms. The pulley assemblies are fixedly connected to the frame.

[0010] The self-locking conveying arm includes a carrying arm, which is provided with two ear seats, one ear seat is connected to a reset spring, and the other ear seat is hinged with a safety pressure hook, and the end of the safety pressure hook away from the ear seat is connected to the reset spring.

[0011] A counting toucher is provided at the bottom of the carrying arm.

[0012] The safety pressure hook on one self-locking conveying arm is connected to the wire rope III, and the wire rope III is connected to the safety pressure hook near the ear seat. The safety pressure hook on the other self-locking conveying arm is connected to the wire rope II, and the wire rope II is connected to the safety pressure hook near the ear seat.

[0013] The top of the carrying arm passes through the rack and the carrying arm can move up and down in the rack.

[0014] The beneficial effects of the present invention are as follows: the lifting type multi-pipe string moving device of the present invention solves the problems of high manual labor intensity, unreliable pipe string rolling, and much preliminary preparation work in the prior art. The pipe string moving operation in the yard can be mechanized and automated, reducing the demand for cranes, forklifts, etc., and reducing the labor intensity and safety risks of manual operations; the pipe string moving no longer uses the conventional rolling method, and the pipe string moving process is stable and reliable with low noise; multiple pipe strings can be moved at one time, and the operation efficiency is high; it does not change the existing pipe string discharge method (conventional pipe rack + spacer layering), has good adaptability, and does not need to load the pipe string into the drill pipe box in advance; it has a simple structure and low cost, and is suitable for the transformation of various old drilling rigs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of the overhead multi-pipe string transport device of the present invention;

[0016] Figure 2 This is a front view of the overhead multiple pipe string transporting device of the present invention;

[0017] Figure 3 This is a schematic diagram of an empty pipe lifting arm assembly in the overhead multiple pipe string transporting device of the present invention;

[0018] Figure 4 This is a schematic diagram of the pipe lifting arm assembly of the gantry-type multi-pipe column transporting device of the present invention under load.

[0019] In the figure, 1. Rail, 2. Traveling mechanism, 21. Frame, 22. Traveling drive assembly, 23. Traveling roller, 3. Pipe lifting mechanism, 31. Driving winch assembly, 321. Steel wire rope Ⅰ, 322. Steel wire rope connection ring, 323. Steel wire rope Ⅱ, 324. Steel wire rope Ⅲ, 33. Pulley assembly, 34. Self-locking conveying arm, 341. Carrying arm, 342. Safety hook, 343. Return spring, 344. Counting contactor, 4. Pipe column yard, 5. Power catwalk, 51. Power catwalk pipe rack, 6. Pipe column. Specific embodiments

[0020] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0021] The gantry-type multi-pipe column transporting device of the present invention, as Figure 1 , includes a power catwalk 5. Rails 1 are provided at both ends of the power catwalk 5. The two rails 1 are parallel to each other. A traveling mechanism 2 is arranged on the rails 1. The traveling mechanism 2 can move left and right along the rails on one side of the power catwalk. A pipe lifting mechanism 3 is arranged on the traveling mechanism 2. The pipe lifting mechanism 3 can lift or lower the pipe columns in the pipe column yard (conventional pipe rack) by a certain height. The traveling mechanism 2 includes a frame 21. Two traveling rollers 23 are arranged at the bottoms of both sides of the frame 21. The traveling rollers 23 are matched with the rails 1. A traveling drive assembly 22 is arranged on one or more of the traveling rollers 23. The traveling drive assembly 22 is fixedly connected to the frame 21. As Figure 2 shown, the pipe lifting mechanism 3 includes a driving winch assembly 31. The driving winch assembly 31 is fixedly connected to the frame 21. Two self-locking conveying arms 34 are arranged on the frame 21. A steel wire rope Ⅰ321 is connected to the driving winch assembly 31. One end of the steel wire rope Ⅰ321 is wound on the drum of the driving winch assembly 31. The other end of the steel wire rope Ⅰ321 is connected to the steel wire rope connection ring 322. A steel wire rope Ⅱ323 and a steel wire rope Ⅲ324 are connected to the steel wire rope connection ring 322. One end of the steel wire rope Ⅱ323 is connected to the steel wire rope connection ring 322. The other end of the steel wire rope Ⅱ323 is connected to one self-locking conveying arm 34. One end of the steel wire rope Ⅲ324 is connected to the steel wire rope connection ring 322. The other end of the steel wire rope Ⅲ324 is connected to the other self-locking conveying arm 34. The self-locking conveying arm can move up and down synchronously on the frame of the traveling mechanism under the drive of the driving winch assembly; A number of pulley assemblies 33 are arranged between the driving winch assembly 31 and the steel wire rope connection ring 322, and between the steel wire rope connection ring 322 and the two self-locking conveying arms 34. The pulley assemblies 33 are fixedly connected to the frame 21. As Figure 3 and Figure 4As shown in the figure, the self-locking conveying arm 34 includes a conveying arm 341. There are two lugs provided on the conveying arm 341. One lug is connected with a return spring 343, and a safety hook 342 is hinged on the other lug. One end of the safety hook 342 away from the lug is connected with the return spring 343. In the no-load condition, under the action of the return spring 343, the safety hook 342 is lifted upward to facilitate the entry of the pipe string 6. When the pipe string 6 enters and is loaded, the safety hook 342 rotates downward under the action of the steel wire rope, and the pipe string 6 is surrounded to prevent the pipe string 6 from detaching. A counting toucher 344 is provided at the bottom of the conveying arm 341. The safety hook 342 on one self-locking conveying arm 34 is connected with the steel wire rope III 324, and the steel wire rope III 324 is connected to the safety hook 342 near the lug. The safety hook 342 on the other self-locking conveying arm 34 is connected with the steel wire rope II 323, and the steel wire rope II 323 is connected to the safety hook 342 near the lug. The top of the conveying arm 341 penetrates through the truss 21 and the conveying arm 341 can move up and down within the truss 21.

[0022] The structure of the gantry type multi-pipe string transfer device of the present invention is composed of a track 1, a traveling mechanism 2, a pipe lifting mechanism 3, etc.

[0023] There are two tracks 1 in total, which are arranged in parallel at the front and rear ends of the catwalk. Each track is composed of multiple sections, and a flexible connection is adopted between each section to facilitate disassembly, transportation and extension to adapt to different well site requirements;

[0024] The traveling mechanism 2 is arranged above the track 1 and is composed of a truss 21, a traveling drive assembly 22 and traveling rollers 23. The whole traveling mechanism 2 can move left and right along the track 1 under the action of the traveling drive assembly 22 and the traveling rollers 23. The traveling drive assembly 22 can be driven by a motor reducer or a motor reducer; the truss 21 is the installation base of the pipe lifting mechanism 3, and two guides for the self-locking conveying arm assembly 34 are symmetrically arranged in the middle part to facilitate the up and down movement of the self-locking conveying arm assembly 34.

[0025] The pipe lifting mechanism 3 is the core component of the gantry-type multi-pipe column transporting device of the present invention, and is composed of a hoisting winch assembly 31, wire rope A 321, a wire rope connecting ring 322, wire rope B 323, wire rope C 324, a pulley assembly 33, and a self-locking conveying arm 34. The driving winch assembly 31 is arranged on the traveling mechanism frame 21 and can be an electric winch or a hydraulic winch. The pulley assembly 33 is also arranged on the traveling mechanism frame 21 and is composed of multiple pulleys, mainly providing guidance for the wire ropes. There are two self-locking conveying arms 34, which are symmetrically arranged on the left and right inside the guidance of the traveling mechanism frame 21. One end of the wire rope A 321 is wound around the drum of the driving winch assembly 31, and the other end is connected to the wire rope connecting ring 322. One ends of the wire rope B 323 and the wire rope C 324 are simultaneously connected to the wire rope connecting ring 322, and the other ends are respectively connected to one of the self-locking conveying arms 34 after being guided by the pulley assembly 33. Through this connection method, it is ensured that the two self-locking conveying arms 34 rise or fall synchronously. The self-locking conveying arm 34 is mainly composed of an operating arm 341, a safety hook 342, a return spring 343, and a counting contactor 344. The carrying arm 341 is provided with two ear seats. One of the ear seats is connected to the return spring 343, and the other ear seat is hinged to the safety hook 342. One end of the safety hook 342 is connected to the wire rope 32, and the other end is connected to the return spring 343. The height of the ear seat of the carrying arm 341 is adjustable to meet the requirements of different drilling tools. In the no-load condition, the return spring 343 ensures that the safety hook 342 is in the open state.

[0026] The specific operation process of the gantry-type multi-pipe column transporting device of the present invention is as follows:

[0027] Drill pipe feeding process (drill pipe is fed from the conventional pipe rack to the power catwalk pipe rack): First step, the traveling mechanism 2 moves to the outermost side of the drill pipe yard 4 driven by the traveling drive assembly 22, and then the hoisting winch assembly 31 drives the steel wire rope to lower the self-locking conveying arm assembly 34 to the height of the target drill pipe layer; Second step, the traveling mechanism 2 moves as a whole towards the drill pipe yard 4, and the counting toucher 344 records the number of drill pipes entering. After the number is consistent with the number set in the program, the traveling mechanism stops running; Third step, the hoisting winch assembly 31 drives the steel wire rope to lift the self-locking conveying arm assembly 34. When the carrying arm 341 touches the drill pipe 6, the tensions of the steel wire ropes 323 and 324 increase. Under the action of the steel wire ropes, the safety hook 342 overcomes the tension of the return spring 343 and rotates to the extreme position, embracing the drill pipe 5 on the carrying arm 341 to ensure that the drill pipe 5 will not fall off. The hoisting winch assembly 31 continues to lift, lifting the self-locking conveying arm assembly 34 to a certain height to ensure that it does not collide with the drill pipes in the ground drill pipe yard 4; Fifth step, the traveling mechanism 2 moves as a whole to move the drill pipe above the catwalk pipe rack 51, and lowers the self-locking conveying arm assembly 34. After the drill pipe touches the power catwalk pipe rack 51, the tensions of the steel wire ropes 323 and 324 decrease, and the safety hook 342 swings upward under the tension of the return spring 343 and fully opens to release the drill pipe 6; Sixth step, the traveling mechanism retreats. After the self-locking conveying arm assembly 34 is completely separated from the drill pipe 6, the hoisting winch assembly 31 lifts to raise the self-locking conveying arm assembly 34 to the set height, thus completing one drill pipe feeding process. Repeat the above steps to complete the drill pipe feeding process from the drill pipe yard 4 to the power catwalk 5.

[0028] Drilling pipe throwing process (transporting the pipe string from the conventional pipe rack to the power catwalk pipe rack): First step, the traveling mechanism 2 moves to the outermost side of the power catwalk pipe rack 51 driven by the traveling drive assembly 22, and then the hoisting winch assembly 31 drives the steel wire rope to lower the self-locking conveying arm assembly 34 to the height of the catwalk pipe rack 51; Second step, the traveling mechanism 2 as a whole moves towards the power catwalk 5, and the counting toucher 344 records the number of pipe strings entering. After the number is consistent with the program-set number, the traveling mechanism 2 stops running; Third step, the hoisting winch assembly 31 drives the steel wire rope to lift the self-locking conveying arm assembly 34. When the carrying arm 341 contacts the pipe string 5, the tensions of the steel wire ropes 323 and 324 increase. Under the action of the steel wire ropes, the safety hook 342 overcomes the tension of the return spring 343 and rotates to the limit position, embracing the pipe string 6 on the carrying arm 341 to ensure that the pipe string 6 will not fall off. The hoisting winch assembly 31 continues to lift, lifting the self-locking conveying arm assembly 34 to a certain height to ensure no collision with the pipe strings in the ground pipe string yard 4; Fifth step, the traveling mechanism 2 as a whole moves to the designated position in the pipe string yard 4, and the self-locking conveying arm assembly 34 is lowered. After the pipe string contacts the partition rod in the yard pipe string 4, the tensions of the steel wire ropes 323 and 324 decrease, and the safety hook 342 swings upward under the tension of the return spring 343 and fully opens to release the pipe string; Sixth step, the traveling mechanism 2 continues to move. After the self-locking conveying arm assembly 34 is completely separated from the pipe string, the hoisting winch assembly 31 lifts to lift the self-locking conveying arm assembly 34 to the set height, thus completing one drilling pipe throwing process. Repeat the above steps to complete the transportation process of the pipe string from the power catwalk 5 to the pipe string yard 4.

[0029] The gantry-type multi-pipe-string transporting device of the present invention solves the problems in the prior art such as large manual labor intensity, unreliable rolling of pipe strings, and a lot of preparatory work in the early stage. The pipe string transporting operation in the yard can be mechanized and automated, reducing the demand for cranes, forklifts, etc., and reducing the labor intensity and safety risks of manual operations; The pipe string transportation no longer adopts the conventional rolling method, and the pipe string transportation process is stable and reliable with low noise; Multiple pipe strings can be transported at one time, with high operation efficiency; It does not change the existing pipe string arrangement method (conventional pipe rack + partition rod in layers), has good adaptability, and there is no need to load the pipe strings into the drill pipe box in advance; It has a simple structure and low cost, and is suitable for the transformation of various old drilling rigs.

Claims

1. Gantry crane type multi-pipe column transportation device, characterized in that, It includes a power catwalk (5), and tracks (1) are provided at both ends of the power catwalk (5). The two tracks (1) are parallel to each other. A traveling mechanism (2) is arranged on the tracks (1), and a pipe lifting mechanism (3) is arranged on the traveling mechanism (2). The traveling mechanism (2) includes a traveling frame (21). Two traveling rollers (23) are arranged at the bottoms of both sides of the traveling frame (21). The traveling rollers (23) are matched with the tracks (1). A traveling drive assembly (22) is arranged on one or more of the traveling rollers (23), and the traveling drive assembly (22) is fixedly connected to the traveling frame (21). The pipe lifting mechanism (3) includes a driving winch assembly (31). The driving winch assembly (31) is fixedly connected to the traveling frame (21). Two self-locking conveying arms (34) are arranged on the traveling frame (21). A wire rope Ⅰ (321) is connected to the driving winch assembly (31). One end of the wire rope Ⅰ (321) is wound around the drum of the driving winch assembly (31), and the other end of the wire rope Ⅰ (321) is connected to a wire rope connecting ring (322). A wire rope Ⅱ (323) and a wire rope Ⅲ (324) are connected to the wire rope connecting ring (322). One end of the wire rope Ⅱ (323) is connected to the wire rope connecting ring (322), and the other end of the wire rope Ⅱ (323) is connected to one self-locking conveying arm (34). One end of the wire rope Ⅲ (324) is connected to the wire rope connecting ring (322), and the other end of the wire rope Ⅲ (324) is connected to the other self-locking conveying arm (34). The self-locking conveying arm (34) includes a carrying arm (341). Two ear seats are arranged on the carrying arm (341). One ear seat is connected to a return spring (343), and a safety hook (342) is hinged to the other ear seat. The end of the safety hook (342) away from the ear seat is connected to the return spring (343).

2. The overhead crane type multi-pipe column transporting device according to claim 1, characterized in that, A number of pulley assemblies (33) are arranged between the driving winch assembly (31) and the wire rope connecting ring (322), and between the wire rope connecting ring (322) and the two self-locking conveying arms (34). The pulley assemblies (33) are fixedly connected to the traveling frame (21).

3. The gantry crane type multi-pipe column transporting device according to claim 1, characterized in that, A counting toucher (344) is arranged at the bottom of the carrying arm (341).

4. The gantry crane type multi-pipe column transporting device according to claim 1, characterized in that, The safety hook (342) on one self-locking conveying arm (34) is connected to the wire rope Ⅲ (324), and the wire rope Ⅲ (324) is connected to the safety hook (342) near the ear seat. The safety hook (342) on the other self-locking conveying arm (34) is connected to the wire rope Ⅱ (323), and the wire rope Ⅱ (323) is connected to the safety hook (342) near the ear seat.

5. The overhead crane type multi-pipe column transporting device according to claim 1, characterized in that, The top of the carrying arm (341) penetrates through the traveling frame (21), and the carrying arm (341) can move up and down within the traveling frame (21).

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