Oil pipe supporting structure

Abstract

The utility model relates to the technical field of oil pipe conveying, in particular to an oil pipe supporting structure. The oil pipe supporting structure comprises a power catwalk, a mounting frame is arranged on a conveying frame in the power catwalk, and a supporting assembly is erected on the mounting frame. The supporting assembly comprises a supporting frame, the supporting frame is arranged above the mounting frame, the supporting frame is sleeved with two sliding frames which are symmetrically distributed and connected in a sliding mode, a supporting cylinder which is rotationally connected is erected between the two sliding frames, and a guide cylinder is arranged in the supporting cylinder; according to the oil pipe supporting structure, in the using process, after the conveyed oil pipe penetrates through the interior of the guide cylinder, the guide cylinder can guide the end, away from a suspension device on an external wellhead platform, of the oil pipe, and therefore large reset swing of the oil pipe in the supporting and conveying process of the oil pipe can be reduced, and the service life of the oil pipe is prolonged. Therefore, the stability of supporting and conveying the oil pipe can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil pipe transportation, in particular to an oil pipe supporting structure. Background Art

[0002] A catwalk is an auxiliary access path built alongside an oil rig or related equipment. A pipeline support catwalk is primarily used to support and transport pipelines. It is typically a sloped structure extending from the ground or a lower platform to a higher work area, such as a wellhead platform.

[0003] When conveying the oil pipe on the existing oil pipe string power catwalk, the oil pipe is generally placed directly on the conveying frame on the top of the device, and then the oil pipe is driven and conveyed. During this process, when the device of the wellhead platform lifts the end of the oil pipe, it cannot guide the end of the oil pipe on the conveying frame. This direct sliding method makes it very easy for the oil pipe far away from the end of the wellhead platform to slip due to the power during the suspension during the lifting and driving process of the oil pipe, which not only increases the torsional force of the wellhead platform suspension device, but also reduces the stability of the oil pipe support during the lifting process.

[0004] Therefore, it is necessary to provide a new oil pipe support structure to solve the above technical problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides an oil pipe supporting structure.

[0006] The oil pipe support structure provided by the utility model comprises: a power catwalk, a conveying frame in the power catwalk is provided with a mounting frame, and a support assembly is mounted on the mounting frame;

[0007] The support assembly includes a support frame, which is arranged above the mounting frame. Two symmetrically distributed and slidably connected sliding frames are mounted on the support frame. A rotatably connected support cylinder is arranged between the two sliding frames, and a guide cylinder is provided inside the support cylinder.

[0008] Preferably, a guide ring is provided at the end of the guide cylinder, a plurality of annularly distributed guide arc plates are provided inside the guide cylinder, a telescopic rod is provided on the outer wall of the guide arc plate, a support plate is provided at the end of the telescopic rod, and the support plate is fixedly connected to the inner wall of the guide cylinder.

[0009] Preferably, a spring a is sleeved on the outside of the telescopic rod, one end of the spring a is fixedly connected to the corresponding guide arc piece, and the other end of the spring a is fixedly connected to the support piece.

[0010] Preferably, a counterweight block is provided at the bottom of the support tube, a through hole is provided at the top of the support tube, and a limiting hole is provided inside the guide tube at a position opposite to the through hole.

[0011] Preferably, a support plate is provided on the top of the support tube, a slidingly connected connecting frame is inserted into the interior of the support plate, a limiting rod is provided at the bottom of the connecting frame opposite to the limiting hole, and the limiting rod is inserted into the limiting hole through the through hole, a spring b is arranged between the connecting frame and the support plate, and the two ends of the spring b are fixedly connected to the corresponding connecting frame and support plate respectively.

[0012] Preferably, hydraulic cylinders are provided on both sides of the top of the mounting frame, and the top ends of the hydraulic cylinders are fixedly connected to the bottom of the support frame.

[0013] Preferably, a through groove is provided in the conveying frame of the power catwalk at a position opposite to the guide tube and the support tube, and the inner wall specification of the through groove is larger than the outer wall specification of the support tube.

[0014] Compared with related technologies, the oil pipe support structure provided by the present invention has the following beneficial effects:

[0015] 1. The utility model sets up a guide cylinder inside the support assembly. During use, when the oil pipe to be transported passes through the guide cylinder, the guide cylinder can guide the end of the oil pipe away from the suspension device on the external wellhead platform, thereby reducing the large reset swing of the oil pipe during the support and transportation of the oil pipe, thereby improving the stability of the support and transportation of the oil pipe.

[0016] 2. The utility model adopts a snap-on method to install the guide cylinder, so that in the later use process, it is convenient for the staff to replace the specifications of the guide cylinder, so that the device can guide oil pipes of different specifications, thereby improving the later application scope and use flexibility of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A structural schematic diagram of a preferred embodiment of the oil pipe support structure provided by the utility model;

[0018] Figure 2 for Figure 1 A schematic diagram of the structure of the connection between the mounting frame, support assembly and guide cylinder components shown;

[0019] Figure 3 for Figure 2 A schematic diagram of the structure of the connection between the mounting frame and the support assembly shown;

[0020] Figure 4 for Figure 2 A schematic diagram of a partial cross-sectional structure of the guide cylinder and its components shown;

[0021] Figure 5 for Figure 2 Schematic diagram of the structure of the support plate and its components shown.

[0022] Numbers in the figure: 1. Power catwalk; 11. Through slot; 2. Mounting frame; 21. Hydraulic cylinder; 3. Support assembly; 31. Support frame; 32. Sliding frame; 33. Support cylinder; 331. Counterweight; 332. Through hole; 4. Guide cylinder; 41. Guide ring; 411. Limit hole; 42. Guide arc plate; 43. Telescopic rod; 44. Spring a; 45. Support plate; 5. Support plate; 51. Connecting frame; 52. Limit rod; 53. Spring b. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0024] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0025] See also Figures 1 to 5 An embodiment of the present invention provides an oil pipe support structure, which includes: a power catwalk 1, a conveying frame in the power catwalk 1 is provided with a mounting frame 2, and a support assembly 3 is mounted on the mounting frame 2.

[0026] In the embodiments of the present invention, please refer to Figures 1 to 5 The support assembly 3 includes a support frame 31, which is arranged above the mounting frame 2. Two symmetrically distributed and slidably connected sliding frames 32 are sleeved on the support frame 31. A rotatably connected support cylinder 33 is arranged between the two sliding frames 32, and a guide cylinder 4 is provided inside the support cylinder 33. A guide ring 41 is provided at the end of the guide cylinder 4. A number of annularly distributed guide arc pieces 42 are provided inside the guide cylinder 4. A telescopic rod 43 is provided on the outer wall of the guide arc piece 42. A support piece 45 is provided at the end of the telescopic rod 43, and the support piece 45 is fixedly connected to the inner wall of the guide cylinder 4. A spring a44 is sleeved on the outside of the telescopic rod 43. One end of the spring a44 is fixedly connected to the corresponding guide arc piece 42, and the other end of the spring a44 is fixedly connected to the support piece 45.

[0027] It should be noted that: by installing the sliding frame 32 and installing the rotating support cylinder 33 inside the sliding frame 32, the guide cylinder 4 can be movably installed. Therefore, during use, when the external suspension device suspends the oil pipe and tilts it upward, the support cylinder 33 will drive the guide cylinder 4 to rotate and rise synchronously with the oil pipe, thereby allowing the guide cylinder 4 to support and guide the oil pipe.

[0028] By movably setting up the guide cylinder 4, during the guiding process, when the centralizer on the oil pipe moves to the inside of the guide cylinder 4 to squeeze the guide arc piece 42, the squeezing force can cause the guide arc piece 42 to squeeze the telescopic rod 43, thereby allowing the guide arc piece 42 to move outward, so that the oil pipe can slide out of the guide cylinder 4 smoothly, and the feeding and conveying of the oil pipe can be completed, thereby reducing the large swing during the support and conveying of the oil pipe, and improving the stability of the oil pipe during support and conveying.

[0029] In the embodiments of the present invention, please refer to Figures 1 to 5 A counterweight block 331 is provided at the bottom of the support tube 33, a through hole 332 is provided at the top of the support tube 33, and a limiting hole 411 is provided at the inside of the guide tube 4 opposite to the through hole 332. A support plate 5 is provided at the top of the support tube 33, and a sliding connection frame 51 is inserted into the inside of the support plate 5. A limiting rod 52 is provided at the bottom of the connecting frame 51 opposite to the limiting hole 411, and the limiting rod 52 is inserted into the limiting hole 411 through the through hole 332. A spring b53 is arranged between the connecting frame 51 and the support plate 5, and the two ends of the spring b53 are fixedly connected to the corresponding connecting frame 51 and the support plate 5 respectively.

[0030] It should be noted that by providing a counterweight 331 at the bottom of the support tube 33, in the initial state, the guide tube 4 in the support tube 33 can be smoothly placed in the water state through the center of the counterweight 331. Then, when the driving component on the conveying frame drives the oil pipe horizontally placed therein, the end of the oil pipe can be smoothly inserted into the guide tube 4.

[0031] By connecting the limiting rod 52 with the limiting hole 411, the guide cylinder 4 is installed, which makes it more convenient to install or disassemble the guide cylinder 4 during the later use of the device, thereby making it easier for the staff to change the specifications of the guide cylinder 4, so that the device can guide oil pipes of different specifications, thereby improving the later scope of application and flexibility of use of the device.

[0032] In the embodiments of the present invention, please refer to Figures 1 to 5 Hydraulic cylinders 21 are provided on both sides of the top of the mounting frame 2. The top of the hydraulic cylinder 21 is fixedly connected to the bottom of the support frame 31. A through groove 11 is provided inside the conveying frame in the power catwalk 1 at the position opposite to the guide cylinder 4 and the support cylinder 33, and the inner wall specification of the through groove 11 is larger than the outer wall specification of the support cylinder 33.

[0033] It should be noted that: by setting a relatively large through groove 11, during use, when the staff controls the hydraulic cylinder 21 to contract to drive the support tube 33 to move downward, the through groove 11 can enable the support tube 33 to move smoothly to the inside of the conveying frame in the power catwalk 1, thereby avoiding obstruction of the support tube 33 when moving downward, and thus the center height of the guide tube 4 inside the support tube 33 can be smoothly adjusted.

[0034] The working principle of the oil pipe support structure provided by the utility model is as follows;

[0035] When using this device, first, you can select a guide cylinder 4 that matches the oil pipe according to its specifications, and insert the guide cylinder 4 into the interior of the support cylinder 33. After the guide cylinder 4 is inserted, you can release the pull on the connecting frame 51. At this time, the spring b53 will drive the connecting frame 51 to move downward through its own force, so that the limiting rod 52 at the bottom of the connecting frame 51 can be inserted into the limiting hole 411 through the through hole 332. At this point, the installation of the guide cylinder 4 is completed, and then the hydraulic cylinder 21 can be controlled to work. The working hydraulic cylinder 21 will drive the guide cylinder 4 to move synchronously through the support assembly 3, so that the center of the guide cylinder 4 can be adjusted to the required position. After the oil pipe to be supported and transported is moved to the transport frame in the power catwalk 1, the jacking component and the driving component in the power catwalk 1 can be controlled to work, so that the oil pipe can be squeezed and driven.

[0036] After the end of the oil pipe passes through the interior of the guide cylinder 4, the suspension component in the wellhead platform can clamp the end of the oil pipe, thereby lifting the oil pipe. During the lifting process of the oil pipe, the moving oil pipe can abut against the outer wall of the guide arc piece 42 inside the guide cylinder 4. At this time, the annular guide arc piece 42 can limit and guide the end of the oil pipe away from the wellhead platform, thereby improving the stability of the oil pipe during support and transportation.

[0037] During this process, the lifted oil pipe will be in an inclined upward state. At this time, the force of the oil pipe tilting will squeeze the guide cylinder 4 and drive the guide cylinder 4 to rotate inside the sliding frame 32, so that the center of the guide cylinder 4 and the center of the oil pipe are aligned in a straight line. At the same time, the driving force during the lifting process can also drive the sliding frame 32 to slide on the support frame 31, thereby making the lifting of the oil pipe smoother.

[0038] When the centralizer on the oil pipe moves to the inside of the guide cylinder 4 and squeezes the guide arc piece 42, the squeezing force causes the guide arc piece 42 to squeeze the telescopic rod 43, thereby moving the guide arc piece 42 outward, so that the oil pipe can slide out of the guide cylinder 4 smoothly, thus completing the feeding and conveying of the oil pipe;

[0039] Later, when the oil pipe needs to be taken out of the oil well and the oil pipe needs to be unloaded, the hydraulic cylinder 21 can be controlled to be fully expanded. At this time, the fully expanded hydraulic cylinder 21 will lift the guide cylinder 4 upward through the support frame 31, thereby avoiding the guide cylinder 4 from blocking the oil pipe when it slides toward the conveying frame in the power catwalk 1, so that the device can smoothly raise and lower the oil pipe.

[0040] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0041] The above are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An oil pipe support structure, characterized in that: include: A power catwalk (1), wherein a conveying frame in the power catwalk (1) is provided with a mounting frame (2), and a supporting assembly (3) is provided on the mounting frame (2); The support assembly (3) comprises a support frame (31), the support frame (31) being arranged above the mounting frame (2), two symmetrically distributed and slidably connected sliding frames (32) being sleeved on the support frame (31), a rotatably connected support cylinder (33) being arranged between the two sliding frames (32), and a guide cylinder (4) being arranged inside the support cylinder (33).

2. The oil pipe support structure according to claim 1, characterized in that: A guide ring (41) is provided at the end of the guide cylinder (4), a plurality of annularly distributed guide arc pieces (42) are provided inside the guide cylinder (4), a telescopic rod (43) is provided on the outer wall of the guide arc piece (42), a support piece (45) is provided at the end of the telescopic rod (43), and the support piece (45) is fixedly connected to the inner wall of the guide cylinder (4).

3. The oil pipe support structure according to claim 2, characterized in that: The outer portion of the telescopic rod (43) is provided with a spring a (44), one end of the spring a (44) is fixedly connected to the corresponding guide arc piece (42), and the other end of the spring a (44) is fixedly connected to the support piece (45).

4. The oil pipe support structure according to claim 3, characterized in that: A counterweight (331) is provided at the bottom of the support tube (33), a through hole (332) is provided at the top of the support tube (33), and a limiting hole (411) is provided in a portion of the guide tube (4) opposite to the through hole (332).

5. The oil pipe support structure according to claim 4, characterized in that: A support plate (5) is provided on the top of the support tube (33), a slidingly connected connecting frame (51) is inserted into the interior of the support plate (5), a limiting rod (52) is provided at the bottom of the connecting frame (51) at a position opposite to the limiting hole (411), and the limiting rod (52) is inserted into the limiting hole (411) through the through hole (332), a spring b (53) is provided between the connecting frame (51) and the support plate (5), and the two ends of the spring b (53) are fixedly connected to the corresponding connecting frame (51) and the support plate (5), respectively.

6. The oil pipe support structure according to claim 1, characterized in that: Hydraulic cylinders (21) are provided on both sides of the top of the mounting frame (2), and the top ends of the hydraulic cylinders (21) are fixedly connected to the bottom ends of the supporting frame (31).

7. The oil pipe support structure according to claim 1, characterized in that: A through slot (11) is provided in the conveying frame of the power catwalk (1) at a position opposite to the guide tube (4) and the support tube (33), and the inner wall specification of the through slot (11) is larger than the outer wall specification of the support tube (33).

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