CN111810719A

CN111810719A - Accurate butt joint of seabed oil gas pipeline is with lifting and holding device

Info

Publication number: CN111810719A
Application number: CN202010660115.9A
Authority: CN
Inventors: 刘丽丽
Original assignee: 刘丽丽
Current assignee: Donghui New Energy Co Ltd of Dongying Economic and Technological Development Zone
Priority date: 2020-07-10
Filing date: 2020-07-10
Publication date: 2020-10-23
Anticipated expiration: 2040-07-10
Also published as: CN111810719B

Abstract

The invention discloses a lifting and holding device for accurate butt joint of seabed oil and gas pipelines, which comprises a stand column, a first telescopic rod, a sliding block, a second telescopic rod, a connecting frame, a hanging cable and a control valve, wherein a clamping jaw is arranged at the bottom end of a clamping box, the top end of an air bag is communicated with the bottom end of a connecting pipe, the top end of the connecting pipe is communicated with a flow distribution box, the control valve is arranged at the lower end communicating part of a driving box, an elastic sheet is hermetically covered at an opening at the top end of the driving box, and the upper half sections of the stand column are connected through a reinforcing rod. This accurate butt joint of seabed oil and gas pipeline is with lifting and holding device utilizes the device to move the seabed and is the principle that receives the pressure increase, utilizes pressure to control fixture's operation, need not to use electrical equipment, and structural design is more reasonable and the cost is lower, can utilize the operation of motor to realize the steady quick decline of device simultaneously.

Description

Accurate butt joint of seabed oil gas pipeline is with lifting and holding device

Technical Field

The invention relates to the technical field related to submarine oil and gas exploitation, in particular to a lifting and holding device for precise butt joint of submarine oil and gas pipelines.

Background

The oil gas pipeline is used for carrying the indispensable fuel material of modern society such as oil or gas, according to the difference of use scene, its specific installation mode also has the difference, because this kind of resource volume is very huge in international transaction, so ordinary transport mode can't satisfy the user demand, when needs cross-sea transportation, generally can use the oil gas pipeline of laying at the seabed to carry out oil gas transport, and butt joint between the pipeline also need go on in the seabed environment, in the butt joint in-process, in order to ensure the accurate degree of butt joint, need use corresponding lifting clamping device to support the adjustment to the pipeline, but there is the following problem in current similar device when in actual use:

the horizontal position and the vertical position of the clamping jaw position are changed by utilizing a longitudinal telescopic rod and a transverse telescopic rod of the device, so that the aim of adjusting the pipeline position in the clamping jaw with multiple degrees of freedom is fulfilled, the starting and stopping control of the clamping jaw is realized by electric driving, in the actual pipeline clamping process, only two actions of clamping and loosening are needed, the operation is inconvenient by using an electric driving mode, and the damage probability of the operation on the seabed is increased.

Disclosure of Invention

The invention aims to provide a lifting and holding device for the precise butt joint of a submarine oil and gas pipeline, and aims to solve the problems that the existing clamping device is provided in the background art, the horizontal position and the vertical position of a clamping jaw are changed by utilizing a longitudinal telescopic rod and a transverse telescopic rod of the device, so that the aim of adjusting the pipeline position in the clamping jaw in multiple degrees of freedom is fulfilled, the start-stop control of the clamping jaw is realized by electric driving, only two actions of clamping and releasing are needed in the actual pipeline clamping process, the operation is inconvenient by using an electric driving mode, and the damage probability of the submarine oil and gas pipeline working is increased.

In order to achieve the purpose, the invention provides the following technical scheme: a lifting and holding device for accurate butt joint of seabed oil and gas pipelines comprises upright columns, a first telescopic rod, a sliding block, a second telescopic rod, a connecting frame, a suspension cable and a control valve, wherein the upright columns are positioned at two sides of a clamping box, 2 upright columns are symmetrically distributed, the side of the upper end face of the clamping box is fixedly connected with the bottom end of the positioning rod, the top end of the positioning rod is connected on the sliding rod in a sliding manner, the positioning rod is connected with the first telescopic rod, the first telescopic rod is installed on the sliding rod, two ends of the sliding rod are vertically connected on the upright columns in a sliding manner through the sliding block, the end head of the sliding rod is connected with the second telescopic rod installed on the upright columns, the top ends of the upright columns are connected through the connecting frame, the top ends of the connecting frame are connected with the bottom end of the suspension cable, the bottom end of the clamping box is provided with a clamping jaw, the top end of the clamping jaw, the slider horizontal sliding connection is in the inside bottom of centre gripping box, and the inner and the first spring fixed connection of slider to the outer end of slider and the surface of gasbag are laminated mutually, the top of gasbag and the bottom of connecting pipe are linked together, and the top of connecting pipe and branch flow box are linked together to install the bottom at branch flow box and drive box of centre gripping box inner wall and be linked together, the control valve is installed to the lower extreme intercommunication department of drive box, and the top opening part sealing cover of drive box has the elastic sheet, link to each other through the anchor strut between the first half section of stand.

Preferably, the inside of stand is hollow structure, and it is 90 contained angles with the anchor strut and distributes, and the anchor strut is horizontal distribution, and the motor is installed to its up end, and the inside rotation of anchor strut installs the drive shaft of horizontal distribution.

Preferably, the middle section of the driving shaft is connected with the output end of the motor through two first conical teeth which are meshed with each other, the two ends of the driving shaft are connected with the vertical shaft through two second conical teeth which are meshed with each other, and the bottom end and the top end of the vertical shaft are respectively provided with a group of paddle boards.

Preferably, the vertical shaft is vertically distributed in the hollow structure of the upright column, the top end of the vertical shaft is positioned below the opening at the top end of the upright column, and the bottom end of the vertical shaft is positioned above the water inlet hole.

Preferably, the inlet opening is for the slope distribution, and the inlet opening is seted up in the inside of extending the piece, and the inlet opening is linked together with the inner space of stand to the bottom side surface at the stand is fixed to the extension piece, and the outside of stand is provided with the baffle simultaneously.

Preferably, baffle and stand are perpendicular sliding connection, and the bottom of baffle passes through the bottom of second spring and stand and links to each other to seted up first water hole on the baffle, the avris in first water hole is provided with the second water hole of seting up at the stand lateral wall simultaneously.

Preferably, the top of baffle is provided with the apron, and the area of apron is greater than the open area on stand top, and the edge at the bottom of apron and stand top is articulated.

Compared with the prior art, the invention has the beneficial effects that: according to the lifting and holding device for the precise butt joint of the submarine oil and gas pipeline, the principle that the pressure is increased when the device moves to the seabed is utilized, the operation of the clamping mechanism is controlled by utilizing the pressure, electric equipment is not needed, the structural design is more reasonable, the cost is lower, and meanwhile, the stable and rapid descending of the device can be realized by utilizing the operation of a motor;

1. the structural design of the elastic sheet and the driving box can utilize the pressure change caused by continuous submergence of the whole device, utilize the pressure of seawater to extrude and deform the elastic sheet, utilize the change of the internal air pressure to discharge high-pressure gas into the shunting box, and utilize the air pressure to expand and deform the air bag under the communication action of the connecting pipe, so that the sliding block correspondingly slides, the automatic movement of the clamping jaw is realized, the automatic clamping of a pipeline is realized, and the design of the air pressure structures such as an air pipe of the air bag and the like can ensure that the seawater can not cause any influence on the use of the driving structure;

2. the design of the cavity inside the upright is that water flow can enter the upright through the water inlet hole and then is discharged from the opening at the top end of the upright in the sinking process of the device, so that the sinking resistance of the device is smaller, and the structural design of the motor and the plurality of bevel gears enables the rotation of the motor shaft to realize the synchronous high-speed rotation of the driving shaft and the vertical shaft by utilizing the meshing transmission of the bevel gears and enables the blades inside the upright to be in the active high-speed rotation state by utilizing the rotation of the vertical shaft, so that the water flow passes through the upright at high speed and the overall sinking speed of the device is higher;

further, when the device when submerging on the pipeline installation platform, the continuous operation of motor and the continuous rotation of paddle board, can make the device on the basis that does not use other fixing device, closely laminate with the mounting platform, avoid the not hard up of pipeline butt joint in-process, the structural design of baffle simultaneously, can utilize the self gravity of device, make its and platform contact the back, can shift up by oneself, make inside rivers flow through first water hole and the second water hole department behind the displacement intercommunication, thereby realize the marine waste and the purpose of small-size organism of near the suspension of expulsion device.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic cross-sectional view of a clamping box according to the present invention;

FIG. 3 is a schematic bottom view of the clamping box of the present invention;

FIG. 4 is a schematic structural view of a front cross section of a column according to the present invention;

FIG. 5 is a schematic view of the structure of the baffle of the present invention after moving upward;

FIG. 6 is a schematic view of the structure of the baffle of the present invention.

In the figure: 1. a column; 2. a clamping box; 3. positioning a rod; 4. a slide bar; 5. a first telescopic rod; 6. a slider; 7. a second telescopic rod; 8. a connecting frame; 9. hoisting cables; 10. a clamping jaw; 11. a chute; 12. a slider; 13. a first spring; 14. an air bag; 15. a connecting pipe; 16. a shunt box; 17. a drive cartridge; 18. an elastic sheet; 19. a control valve; 20. a reinforcing rod; 21. an electric motor; 22. a first bevel gear; 23. a drive shaft; 24. a second taper tooth; 25. a vertical axis; 26. a paddle board; 27. a water inlet hole; 28. an extension block; 29. a cover plate; 30. a baffle plate; 31. a second spring; 32. a first water hole; 33. a second water hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution: a lifting and holding device for the precise butt joint of submarine oil and gas pipelines comprises a vertical column 1, a clamping box 2, a positioning rod 3, a sliding rod 4, a first telescopic rod 5, a sliding block 6, a second telescopic rod 7, a connecting frame 8, a hanging cable 9, a clamping jaw 10, a sliding chute 11, a sliding block 12, a first spring 13, an air bag 14, a connecting pipe 15, a flow dividing box 16, a driving box 17, an elastic sheet 18, a control valve 19, a reinforcing rod 20, a motor 21, a first bevel gear 22, a driving shaft 23, a second bevel gear 24, a vertical shaft 25, a paddle plate 26, a water inlet hole 27, an extension block 28, a cover plate 29, a baffle 30, a second spring 31, a first water hole 32 and a second water hole 33, wherein the vertical column 1 is positioned on two sides of the clamping box 2, 2 are symmetrically distributed on the vertical column 1, the side of the upper end face of the clamping box 2 is fixedly connected with the bottom end of the positioning rod 3, the top end of the positioning rod 3 is slidably, the first telescopic rod 5 is installed on the sliding rod 4, two ends of the sliding rod 4 are vertically connected on the upright post 1 in a sliding mode through the sliding block 6, the end of the sliding rod 4 is connected with the second telescopic rod 7 installed on the upright post 1, the top ends of the upright posts 1 are connected through the connecting frame 8, the top end of the connecting frame 8 is connected with the bottom end of the hanging cable 9, the bottom end of the clamping box 2 is provided with a clamping jaw 10, the top end of the clamping jaw 10 penetrates through the sliding groove 11 to be fixed at the bottom end of the sliding block 12, the clamping jaw 10 is connected with the bottom wall of the clamping box 2 in a sliding mode through the sliding groove 11, the sliding block 12 is horizontally connected with the bottom end of the clamping box 2 in a sliding mode, the inner end of the sliding block 12 is fixedly connected with the first spring 13, the outer end of the sliding block 12 is attached to the outer surface of the air bag 14, the top end of the air bag 14 is communicated with the bottom end, the lower end of the driving box 17 is provided with a control valve 19, the top opening of the driving box 17 is sealed and covered with an elastic sheet 18, and the upper half sections of the upright posts 1 are connected through a reinforcing rod 20.

The interior of the upright post 1 is of a hollow structure and is distributed with a reinforcing rod 20 at an included angle of 90 degrees, the reinforcing rod 20 is horizontally distributed, the upper end surface of the reinforcing rod is provided with a motor 21, the interior of the reinforcing rod 20 is rotatably provided with a horizontally distributed driving shaft 23, the middle section of the driving shaft 23 is connected with the output end of the motor 21 through two first conical teeth 22 which are meshed with each other, two ends of the driving shaft 23 are respectively connected with a vertical shaft 25 through two second conical teeth 24 which are meshed with each other, the bottom end and the top end of the vertical shaft 25 are respectively provided with a group of paddle boards 26, the vertical shaft 25 is vertically distributed in the hollow structure of the upright post 1, the top end of the vertical shaft is positioned below the opening at the top end of the upright post 1, the bottom end of the vertical shaft is positioned above a water inlet 27, the water inlet 27 is distributed in an inclined manner, the water inlet 27 is arranged in the extension block 28, the, meanwhile, the baffle 30 is arranged on the outer side of the upright post 1, so that the motor 21 in fig. 1 and fig. 4 can operate correspondingly, the output shaft rotates correspondingly, and the horizontally distributed driving shaft 23 can synchronously rotate inside the reinforcing rod 20 under the meshing transmission action of the first bevel teeth 22, so that the vertical shaft 25 can synchronously rotate in the cavity inside the upright post 1 under the meshing transmission action of the second bevel teeth 24 at the two ends, and the paddle plates 26 at the top end and the bottom end of the vertical shaft 25 synchronously rotate at high speed, and water flow nearby the vertical shaft is sucked from the water inlet hole 27 and flows out from the opening at the top end of the upright post 1, so that the whole device can play a role of accelerating sinking in the sinking process, and the placing and installing efficiency is improved.

The baffle 30 is vertically connected with the upright column 1 in a sliding manner, the bottom end of the baffle 30 is connected with the bottom end of the upright column 1 through a second spring 31, the baffle 30 is provided with a first water hole 32, the side edge of the first water hole 32 is provided with a second water hole 33 arranged on the side wall of the upright column 1, the top end of the baffle 30 is provided with a cover plate 29, the area of the cover plate 29 is larger than the opening area of the top end of the upright column 1, the bottom end of the cover plate 29 is hinged with the edge of the top end of the upright column 1, when the whole device reaches an installation plane, the bottom end of the baffle 30 is firstly contacted with the surface of the platform, the integral dead weight of the device is higher, the upright column 1 still carries the whole device to continuously move downwards, therefore, the baffle 30 can slide relative to the upright column 1, the sliding state is shown in figure 5, at the moment, water flow still can flow at, the effort that the air current flow guide produced just can be with the whole tight subsides of device on the platform, ensure the stability of pipeline butt joint clamping process, stand 1 bottom and platform contact the back completely, first water hole 32 in 4-5 just can be in the state that the level corresponds and communicates each other with second water hole 33, consequently the rivers can be followed the water hole and flowed out, thereby realize utilizing rivers to drive the purpose of near biology and suspension rubbish of device, need not to install and clear up repeatedly behind the ashore.

The working principle is as follows: firstly, the initial state of the main body of the device is as shown in fig. 1, when the butt joint operation needs to be carried out on the submarine pipeline, the operator can use the corresponding existing equipment to sink the main body of the device into the submarine area through the hoist cable 9 and the connecting frame 8, during the sinking process of the device, the motor 21 in fig. 1 and fig. 4 can be operated correspondingly, at this time, the output shaft thereof rotates correspondingly, and under the meshing transmission action of the first bevel gear 22, the horizontally distributed driving shaft 23 rotates synchronously inside the reinforcing rod 20, therefore, under the meshing transmission action of the second bevel gear 24 at the two ends thereof, the vertical shaft 25 rotates synchronously inside the cavity inside the upright post 1, so that the paddle boards 26 at the top end and the bottom end of the vertical shaft 25 rotate synchronously at high speed, and the water flow nearby is sucked from the water inlet hole 27 and flows out from the opening at the top end of the upright post 1, therefore, during the sinking process of the whole device, the effect of accelerating sinking can be achieved, the placing and installing efficiency is improved, when the whole device reaches an installing plane, the bottom end of the baffle 30 can be firstly contacted with the surface of the platform, because the dead weight of the whole device is higher, the whole device can still be carried by the upright post 1 to continuously move downwards, therefore, the baffle 30 can slide relative to the upright post 1, the sliding state is shown in figure 5, at the moment, water flow still can flow at high speed in the upright post 1, therefore, the device does not need to use other fixed structures on the platform, the acting force generated by air flow guiding can tightly attach the whole device on the platform, the stability in the process of butt joint and clamping of pipelines is ensured, after the bottom end of the upright post 1 is completely contacted with the platform, the first water hole 32 and the second water hole 33 in figures 4-5 can be in a state of horizontal correspondence and mutual communication, therefore, the water flow can flow flows out from the water holes, therefore, the purpose of driving organisms and suspended garbage nearby the device by using water flow is achieved, and repeated cleaning after the device is ashed is not needed;

when a pipeline needs to be clamped, a worker simultaneously submerging into the sea bottom can open the control valve 19 shown in fig. 2, the opening mode can be manual or electric, which is the prior art, and further description is not needed, after the control valve 19 is opened, the driving box 17 and the diversion box 16 are in a state of being communicated, at this time, because the device is located in the sea bottom area, the pressure under a certain depth is higher, the elastic sheet 18 made of elastic material is correspondingly deformed, at this time, the gas in the driving box 17 enters the connecting pipe 15 through the diversion box 16 and further enters the air bag 14, the sliding block 12 is correspondingly slid by utilizing the deformation of the air bag 14, so that the clamping jaw 10 is slid in the sliding groove 11, the purpose of clamping the pipeline by utilizing the hydraulic driving of the clamping mechanism is realized, and the first telescopic rod 5 and the second telescopic rod 7 can drive the clamping box 2 to freely move in the horizontal and vertical directions, thereby realizing the purpose of accurate butt joint.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an accurate butt joint of seabed oil gas pipeline is with lifting and adding device, includes stand (1), first telescopic link (5), sliding block (6), second telescopic link (7), link (8), hoist cable (9) and control valve (19), its characterized in that: the upright post (1) is positioned at two sides of the clamping box (2), 2 upright posts (1) are symmetrically distributed, the side of the upper end face of the clamping box (2) is fixedly connected with the bottom end of the positioning rod (3), the top end of the positioning rod (3) is connected onto the sliding rod (4) in a sliding mode, the positioning rod (3) is connected with the first telescopic rod (5), the first telescopic rod (5) is installed on the sliding rod (4), two ends of the sliding rod (4) are vertically connected onto the upright post (1) in a sliding mode through the sliding block (6), the end of the sliding rod (4) is connected with the second telescopic rod (7) installed on the upright post (1), the top ends of the upright post (1) are connected through the connecting frame (8), the top end of the connecting frame (8) is connected with the bottom end of the suspension cable (9), the bottom end of the clamping box (2) is provided with the clamping jaw (10), and the top end of the clamping jaw (10) penetrates through the sliding groove (11) and, and the clamping jaw (10) is in sliding connection with the bottom wall of the clamping box (2) through the sliding groove (11), the sliding block (12) is horizontally in sliding connection with the inner bottom end of the clamping box (2), the inner end of the sliding block (12) is fixedly connected with the first spring (13), the outer end of the sliding block (12) is attached to the outer surface of the air bag (14), the top end of the air bag (14) is communicated with the bottom end of the connecting pipe (15), the top end of the connecting pipe (15) is communicated with the shunting box (16), the shunting box (16) arranged on the inner wall of the clamping box (2) is communicated with the bottom end of the driving box (17), a control valve (19) is installed at the lower end communicating position of the driving box (17), an elastic sheet (18) is covered at the opening of the top end of the driving box (17) in a sealing mode, and the upper half section of the upright column (1).

2. The precise docking lifting and holding device for the subsea oil and gas pipeline according to claim 1, wherein: the inside of stand (1) is hollow structure, and it is 90 contained angles with reinforcing bar (20) and distributes, and reinforcing bar (20) are horizontal distribution, and motor (21) are installed to its up end, and the inside rotation of reinforcing bar (20) installs horizontal distribution's drive shaft (23).

3. The precise docking lifting and holding device for the subsea oil and gas pipeline according to claim 2, wherein: the middle section of the driving shaft (23) is connected with the output end of the motor (21) through two first bevel gears (22) which are meshed with each other, two ends of the driving shaft (23) are connected with the vertical shaft (25) through two second bevel gears (24) which are meshed with each other, and the bottom end and the top end of the vertical shaft (25) are respectively provided with a group of paddle boards (26).

4. The precise docking lifting and holding device for the subsea oil and gas pipeline according to claim 3, wherein: the vertical shaft (25) is vertically distributed in the hollow structure of the upright post (1), the top end of the vertical shaft is positioned below the opening at the top end of the upright post (1), and the bottom end of the vertical shaft is positioned above the water inlet hole (27).

5. The precise docking lifting and holding device for the subsea oil and gas pipeline according to claim 4, wherein: the inlet opening (27) are distributed in an inclined mode, the inlet opening (27) is formed in the extending block (28), the inner space of the inlet opening (27) and the inner space of the upright post (1) are communicated, the extending block (28) is fixed to the side surface of the bottom end of the upright post (1), and meanwhile the baffle (30) is arranged on the outer side of the upright post (1).

6. The precise docking lifting and holding device for the subsea oil and gas pipeline according to claim 5, wherein: baffle (30) and stand (1) are perpendicular sliding connection, and the bottom of baffle (30) passes through the bottom of second spring (31) and stand (1) and links to each other to first water hole (32) have been seted up on baffle (30), and the avris in first water hole (32) is provided with second water hole (33) of seting up in stand (1) lateral wall simultaneously.

7. The precise docking lifting and holding device for the subsea oil and gas pipeline according to claim 5, wherein: the top of baffle (30) is provided with apron (29), and the area of apron (29) is greater than the open area on stand (1) top, and the edge at the bottom of apron (29) and stand (1) top is articulated.