Ocean thermal energy conversion offshore downpipe damping connector

Abstract

The application provides a marine temperature difference energy power generation offshore lower pipe damping joint pipe device, which comprises a fixed seat installed on a marine platform, a first upper arm, an inner end of the first upper arm being connected to the fixed seat and an outer end of the first upper arm being connected to a first upper clamping device, a second upper arm, an inner end of the second upper arm being connected to the fixed seat and an outer end of the second upper arm being connected to a second upper clamping device, a lower arm, an inner end of the lower arm being connected to the fixed seat and an outer end of the lower arm being connected to a lower clamping device, the first upper clamping device and the second upper clamping device being respectively spaced and clamped outside the upper joint pipe at different axial positions, and the lower clamping device being clamped outside the lower joint pipe. The application can control and adjust the inclination direction of the upper joint pipe in the butt joint process of the upper joint pipe and the lower joint pipe, then control the upper end of the lower joint pipe through the lower arm and the lower clamping device, so as to control the contact and alignment angle of the lower end of the upper joint pipe and the upper end of the lower joint pipe, and then stably connect the two joint pipes, and further effectively improve the construction efficiency of the marine temperature difference energy power generation equipment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ocean thermal energy conversion, in particular to a marine ocean thermal energy conversion pipe connecting device. BACKGROUND

[0002] Ocean thermal energy conversion is a method of generating electricity by using the temperature difference between the surface and deep sea water and its different heat sources, through a heat exchanger and a turbine. In the existing ocean thermal energy conversion system, the source of heat energy is the warm sea water on the surface of the ocean, and the method of generating electricity is to use the warm sea water to evaporate the low-boiling working fluid in a closed circulation system.

[0003] One of the difficulties of ocean thermal energy conversion technology is that the temperature difference between warm sea water and cold sea water can generate net power when the temperature difference is above 20℃, and cold sea water is usually extracted from a depth of 600-1000m below sea level. This makes the cold water pipe need to be extended to the deep sea to extract cold water by connecting multiple short sections to form a long pipe. Due to the unstable state of offshore construction, it is difficult to maintain stability, resulting in difficulty in connecting two sections of pipe.

[0004] In the prior art, Chinese patent CN117052984A published on November 14, 2023 discloses a marine ocean thermal energy conversion pipe connecting device, which gradually stabilizes the pipe connecting process by setting multiple stabilizing zones. However, this method can only stabilize the upper connecting pipe that is not affected by the buoyancy force, and the lower connecting pipe that has been affected by the buoyancy force may still have some shaking, making it difficult to stably connect the two sections of pipe. SUMMARY

[0005] The present application provides a marine ocean thermal energy conversion pipe connecting device that can more stably connect two sections of pipe and improve the construction efficiency of ocean thermal energy conversion equipment.

[0006] The present application provides a marine ocean thermal energy conversion pipe connecting device, which comprises a fixed seat installed on a marine platform, a first upper arm with an inner end connected to the fixed seat and an outer end connected to a first upper clamping device, a second upper arm with an inner end connected to the fixed seat and an outer end connected to a second upper clamping device, and a lower arm with an inner end connected to the fixed seat and an outer end connected to a lower clamping device. The first upper clamping device and the second upper clamping device are respectively clamped on the outer side of the upper connecting pipe at different axial positions, and the lower clamping device is clamped on the outer side of the lower connecting pipe.

[0007] Further, the fixed seat comprises a vertical support, and the inner ends of the first upper arm, the second upper arm and the lower arm are slidably connected to the vertical support.

[0008] Further, the vertical support is provided with an upper arm guide rail and a lower arm guide rail, an upper sliding block connecting the first upper arm and the second upper arm is slidably arranged in the upper arm guide rail, and a lower sliding block connecting the lower arm is slidably arranged in the lower arm guide rail; the upper sliding block is connected with a first linear driver, and the lower sliding block is connected with a second linear driver.

[0009] Further, the first upper arm and the second upper arm are connected through an angle adjusting mechanism, the angle adjusting mechanism is connected with the upper sliding block; the angle adjusting mechanism comprises a housing, a gear and a toothed fan are rotatably arranged in the housing and are engaged, the gear is connected with a first rotating driving device, the toothed fan is connected with the first upper arm, and a toothed portion rotating shaft of the toothed fan is rotatably connected with the second upper arm.

[0010] Further, the first upper arm comprises a first telescopic support arm, and the first telescopic support arm is movably connected with the first upper clamping device; the second upper arm comprises a second telescopic support arm and a rotating support arm, the second telescopic support arm is movably connected with the second upper clamping device, and the second telescopic support arm is connected with the toothed portion rotating shaft of the toothed fan through the rotating support arm.

[0011] Further, the first upper clamping device and the lower clamping device each comprise a clamping jaw; the second upper clamping device comprises an annular outer rail and a clamping ring, the clamping ring is tightly clamped on the lower end of the upper connection pipe on the inner side, the clamping ring is rotatably connected in the outer rail on the outer side, and the outer rail is movably connected with the second upper arm on the outer side.

[0012] Further, the clamping ring is provided with a ring-shaped distribution of bevel gears, and the outer rail is provided with a second rotating driving device, the second rotating driving device is engaged with the bevel gears on the clamping ring through a bevel gear.

[0013] Further, the bottom end and the top end of the vertical support are respectively provided with guide supports, the side of the guide support away from the vertical support is provided with two arc-shaped openings opening outward, and the side of the two arc-shaped openings adjacent to the vertical support is provided with an arc-shaped blocking ring abutting with the outer periphery of the upper connection pipe and the lower connection pipe.

[0014] Further, the fixing seat further comprises a transverse sliding saddle, a longitudinal sliding saddle and a saddle seat, the saddle seat is fixedly arranged on the offshore platform, the transverse sliding saddle is transversely slidably arranged on the saddle seat, the longitudinal sliding saddle is longitudinally slidably arranged on the transverse sliding saddle, and the vertical support is fixedly arranged on the longitudinal sliding saddle.

[0015] Further, the saddle is provided with a transverse guide rail and a transverse driver, the transverse sliding saddle bottom is provided with a transverse sliding block, the transverse sliding block slides in the transverse guide rail and is connected with the transverse driver; the transverse sliding saddle is provided with a longitudinal guide rail and a longitudinal driver, the longitudinal sliding saddle bottom is provided with a longitudinal sliding block, the longitudinal sliding block slides in the longitudinal guide rail and is connected with the longitudinal driver.

[0016] The technical scheme of the present application controls the middle upper part of the upper connecting pipe through the first upper arm and the first upper clamping device, controls the lower end of the upper connecting pipe through the second upper arm and the second upper clamping device, so that the inclination direction of the upper connecting pipe in the butt joint process with the lower connecting pipe can be controlled and adjusted; the upper end of the lower connecting pipe is controlled through the lower arm and the lower clamping device, so that the lower end of the upper connecting pipe and the upper end of the lower connecting pipe are in contact and aligned in angle, then the two connecting pipes can be stably connected, and the construction efficiency of the ocean temperature difference energy power generation equipment is further effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present application or the technical scheme in the prior art, the drawings needed to be used in the specific embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0019] Figure 2 It is a schematic diagram of the overall structure of the present application from another perspective;

[0020] Figure 3 It is an enlarged view of A of the present application; Figure 2

[0021] Figure 4 It is a schematic diagram of the internal structure of the second upper clamping device of the present application;

[0022] Figure 5 It is an enlarged view of B of the present application; Figure 4

[0023] Figure 6 It is a side view of the present application;

[0024] Figure 7 It is a C-C sectional view of the present application; Figure 6

[0025] Explanation of reference signs:

[0026] 1-sea platform;

[0027] ​​​2-fixed seat; 201-vertical support; 202-upper arm guide rail; 203-lower arm guide rail; 204-upper sliding block; 205-lower sliding block; 206-first linear driver; 207-second linear driver; 208-guiding support; 209-arc-shaped open; 210-arc-shaped blocking ring; 211-transverse sliding saddle; 212-longitudinal sliding saddle; 213-saddle; 214-transverse guide rail; 215-transverse driver; 216-transverse sliding block; 217-longitudinal guide rail; 218-longitudinal driver; 219-longitudinal sliding block;

[0028] 3-first upper arm; 301-first telescopic support arm;

[0029] 4-first upper clamping device;

[0030] 5-second upper arm; 501-second telescopic support arm; 502-rotating support arm;

[0031] 6-second upper clamping device; 601-outer rail; 6011-guide rail groove; 6012-oil injection groove; 6013-oil injection channel; 6014-pump; 6015-oil outlet; 602-clamping ring; 6021-oil inlet groove; 6022-piston column; 603-bevel gear; 604-second rotating driving device; 605-bevel gear;

[0032] 7-lower arm; 8-lower clamping device;

[0033] 9-angle adjusting mechanism; 901-outer shell; 902-gear; 903-toothed fan; 904-first rotating driving device;

[0034] 10-upper connecting pipe;

[0035] 11-lower connecting pipe. DETAILED DESCRIPTION

[0036] The technical solutions of the present application will be described clearly and completely in combination with the embodiments. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0037] In the description of the present application, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0038] In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can include one or more of the features explicitly or implicitly. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited. In addition, the terms "mounting", "connecting", "connecting" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0039] Embodiment 1

[0040] As Figures 1-7 shown, the present application provides a marine temperature difference energy power generation offshore lower pipe damping connecting pipe device, comprising: a fixed seat 2 installed on a marine platform 1; a first upper arm 3, the inner end of the first upper arm 3 is connected to the fixed seat 2, and the outer end is connected with a first upper clamping device 4; a second upper arm 5, the inner end of the second upper arm 5 is connected to the fixed seat 2, and the outer end is connected with a second upper clamping device 6; a lower arm 7, the inner end of the lower arm 7 is connected to the fixed seat 2, and the outer end is connected with a lower clamping device 8; the first upper clamping device 4 and the second upper clamping device 6 are respectively clamped on the outer side of the upper connecting pipe 10 at different axial positions, and the lower clamping device 8 is clamped on the outer side of the lower connecting pipe 11.

[0041] Specifically, marine temperature difference energy power generation needs to insert the cold water pipe into the deep sea to take water, and due to the effect of buoyancy, the lower connecting pipe 11 located in the water during construction is easy to fluctuate and cannot maintain a stable state, and the upper connecting pipe 10 also cannot maintain a stable state due to the instability of the offshore platform 1, so it is difficult to butt joint the two pipes.

[0042] In the operation process, the multi-section lower connector pipe 11 has been spliced into a certain length / depth under the sea surface, and the upper end of the uppermost lower connector pipe 11 extends out of the sea surface for connection with the upper connector pipe 10 above the sea surface, and the upper end portion of the section of the lower connector pipe 11 extends upward out of the lower clamping device 8 and is clamped by the lower clamping device 8. The hoist (not shown) on the offshore platform 1 lifts a section of the upper connector pipe 10 and gradually lowers it through the first upper clamping device 4 and the second upper clamping device 6, and after the lower end portion of the upper connector pipe 10 extends out of the second upper clamping device 6, the first upper clamping device 4 and the second upper clamping device 6 are clamped / clamped at different positions of the upper connector pipe 10. Then, the relative length and direction of the first upper arm 3, the second upper arm 5 and the lower arm 7 are adjusted, and the inclination direction of the upper connector pipe 10 and the lower connector pipe 11 can be adjusted, so that the inclination angle of the upper connector pipe 10 and the lower connector pipe 11 is substantially aligned; then adjust the first upper arm 3 and the second upper arm 5 to move downward to the connection position of the lower end of the upper connector pipe 10 and the upper end of the lower connector pipe 11, that is, the pipe connection process (such as contact for welding, or the beginning of thread engagement, etc.) can be started. Due to the clamping and fixing effect, the pipe connection process is more convenient and stable.

[0043] In the present application, the first upper arm 3 comprises a telescopic structure, the second upper arm 5 and the lower arm 7 each comprise a telescopic structure and a bending structure. The bending structure is a rotating joint, which separates the second upper arm 5 and the lower arm 7 into two sections, one of which is connected to the fixed seat 2, and the other of which is connected to the clamping device through the telescopic structure. A hydraulic motor or a reduction motor is provided on the rotating joint to drive and control the rotation, so as to realize the bending of the second upper arm 5 and the lower arm 7; the telescopic structure can be a hydraulic telescopic arm, etc., to realize the extension and retraction of the first upper arm 3, the second upper arm 5 and the lower arm 7. Through the extension and retraction functions of the first upper arm 3 and the second upper arm 5, the position and inclination angle of the upper connector pipe 10 can be adjusted; in combination with the bending and telescopic functions of the lower arm 7, the alignment of the upper connector pipe 10 and the lower connector pipe 11 can be controlled to facilitate pipe connection.

[0044] Example 2

[0045] The fixed seat 2 comprises a vertical support 201, the inner ends of the first upper arm 3, the second upper arm 5 and the lower arm 7 are all slidably connected to the vertical support 201. The vertical support 201 is provided with an upper arm guide rail 202 and a lower arm 7 guide rail 203, the upper arm guide rail 202 is slidably provided with an upper sliding block 204 connecting the first upper arm 3 and the second upper arm 5, and the lower arm 7 guide rail 203 is slidably provided with a lower sliding block 205 connecting the lower arm 7; the upper sliding block 204 is connected with a first linear driver 206, and the lower sliding block 205 is connected with a second linear driver 207. The first upper arm 3 and the second upper arm 5 are connected through an angle adjusting mechanism 9, and the angle adjusting mechanism 9 is connected with the upper sliding block 204; the angle adjusting mechanism 9 comprises a housing 901, a gear 902 and a toothed fan 903 rotatably arranged in the housing 901 and engaged with each other, the gear 902 is connected with a first rotating driving device 904 (such as a speed reducer motor), the toothed fan 903 is connected with the first upper arm 3, and the toothed part rotating shaft of the toothed fan 903 is rotatably connected with the second upper arm 5. The first upper arm 3 comprises a first telescopic branch arm 301, and the first telescopic branch arm 301 is movably connected with the first upper clamping device 4; the second upper arm 5 comprises a second telescopic branch arm 501 and a rotating branch arm 502, the second telescopic branch arm 501 is movably connected with the second upper clamping device 6, and the second telescopic branch arm 501 is connected with the toothed part rotating shaft of the toothed fan 903 through the rotating branch arm 502.

[0046] Specifically, the first upper arm 3, the second upper arm 5 and the lower arm 7 realize the up-down movement function through the vertical support 201, and through the vertical action of the first upper arm 3, the second upper arm 5 and the lower arm 7, the height control of the upper pipe 10 is realized, and after one upper pipe 10 is connected with the lower pipe 11, the lower clamping device 8 releases the original lower pipe 11, the first upper clamping device 4 and the second upper clamping device 6 tightly clamp the original upper pipe 10 and move it downward (if the single downward stroke is insufficient, the lower clamping device 8 and the upper clamping device can be alternately clamped and released) to the sea surface to become a new lower pipe 11, then the lower clamping device 8 clamps the new lower pipe 11, the upper clamping device releases and moves upward to clamp the new upper pipe 10, and then the connection is performed to realize continuous connection.

[0047] The vertical support 201 is provided with a vertical upper arm guide rail 202 and a lower arm 7 guide rail 203, and the guide rails are respectively provided with sliding blocks, wherein the two upper sliding blocks 204 connecting the first upper arm 3 and the second upper arm 5 are slidably connected to the upper arm guide rail 202, and the lower sliding block 205 connecting the lower arm 7 is slidably connected to the lower arm 7 guide rail 203, that is, the heights of the upper pipe 10 and the lower pipe 11 are independently controlled by the sliding blocks on the upper arm guide rail 202 and the lower arm 7 guide rail 203.

[0048] The first linear driver 206 and the second linear driver 207 can adopt a motor screw structure, a first screw is arranged to rotate in the upper arm guide rail 202, a second screw is arranged to rotate in the lower arm 7 guide rail 203, two reduction motors are fixed on the vertical support 201 to drive the first screw and the second screw respectively, two upper sliding blocks 204 connecting the first upper arm 3 and the second upper arm 5 are arranged to rotate at different height positions of the first screw, and the lower sliding block 205 connecting the lower arm 7 is arranged to rotate on the second screw, so that the first upper arm 3 and the second upper arm 5 and the lower arm 7 can be controlled by the two reduction motors.

[0049] Before the connection between the upper connector 10 and the lower connector 11 is performed, the axial alignment of the upper connector 10 and the lower connector 11 is adjusted by the angle adjustment mechanism 9. Overall, the angle adjustment mechanism 9 controls the swing of the upper part of the upper connector 10 and the (relative) fixation of the lower part of the upper connector 10. The swing of the upper part of the upper connector 10 is controlled by the first upper clamping device 4, and the upper part of the upper connector 10 can swing in the first plane (denoted as the XZ plane) through the telescopic structure of the first upper arm 3 in Embodiment 1; the upper part of the upper connector 10 can swing in the second plane (denoted as the YZ plane) through the structure that the gear 902 drives the toothed fan 903; the second upper clamping device 6 clamping the lower part of the upper connector 10 is rotationally connected with the second upper arm 5 through a universal rotation mechanism (such as a universal joint), so that the inclination angle of the upper connector 10 can be adjusted to be axially aligned with the lower connector 11 through the control of the telescopic structure of the first upper arm 3 and the rotation driving device of the gear 902.

[0050] The first upper arm 3 is composed of two sections, one end of the telescopic arm is movably connected with the first upper clamping device 4, and the other end is directly connected with the toothed fan 903 adjacent to the outer circumferential part of the angle adjustment mechanism 9, and the toothed fan 903 and the gear 902 are rotationally arranged in the shell 901; the toothed fan 903 is a sector structure, and the axis of rotation and the axis of the sector are located on the rotating arm 502 of the second upper arm 5 and are rotationally connected, that is, when the toothed fan 903 rotates, the rotating arm 502 of the first upper arm 3 connected with the toothed fan 903 swings relative to the second upper arm 5 within the sector range.

[0051] The shell 901 of the angle adjustment mechanism 9 is directly connected with the two upper sliding blocks 204 controlling the first upper arm 3 and the second upper arm 5 through a support, that is, the lifting of the angle adjustment mechanism 9 synchronously controls the lifting of the first upper arm 3 and the second upper arm 5.

[0052] In addition, the device can also be provided with angle alignment mechanisms outside the upper connector 10 and the lower connector 11 to monitor the relative inclination angle of the upper connector 10 and the lower connector 11. The angle alignment mechanisms are, for example, a laser emitter provided outside the lower end of the upper connector 10 and a photoelectric sensor provided outside the upper end of the lower connector 11. The laser emitter emits a laser signal in an angle parallel to the axial direction of the upper connector 10, and the photoelectric sensor receives a laser signal in an angle parallel to the axial direction of the lower connector 11. When the photoelectric sensor receives the laser signal, it means that the upper connector 10 and the lower connector 11 are aligned, and then the upper connector 10 is moved downward to be connected with the lower connector 11.

[0053] Embodiment 3

[0054] The first upper clamping device 4 and the lower clamping device 8 each include a clamping jaw. The second upper clamping device 6 includes an outer rail 601 in the form of a ring and a clamping ring 602. The clamping ring 602 is clamped to the lower end of the upper connector 10 on the inner side, and is rotatably connected to the outer rail 601 on the outer side. The outer rail 601 is movably connected to the second upper arm 5 on the outer side. The clamping ring 602 is provided with a plurality of bevel gears 603 distributed in a ring shape on the outer side. The outer rail 601 is provided with a second rotary drive device 604, such as a speed reducer motor, which is engaged with the bevel gears 603 on the clamping ring 602 through a bevel gear 605.

[0055] Specifically, the first upper clamping device 4 and the lower clamping device 8 each include a clamping jaw, which is, for example, an electrically or hydraulically controlled mechanical jaw / clamper structure. Such a clamping jaw is common in the prior art, such as a rudder jaw, and can be opened and closed. When opened, it loosens the clamping of the upper connector 10, and when closed, it clamps the upper segment of the upper connector 10.

[0056] The outer rail 601 is in the form of a ring, and a guide rail groove 6011 is formed on the inner wall. An oil injection groove 6012 is formed on the bottom of the groove. An oil injection channel 6013 is connected to the oil injection groove 6012 on the outer side of the outer rail 601 to inject oil into the inner side. A hydraulic pump 6014 can be connected to the outer side of the oil injection channel 6013. The inner side of the oil injection groove 6012 is open to form an oil outlet 6015. The clamping ring 602 is in the form of a ring and is rotatably arranged in the guide rail groove 6011. The clamping ring 602 is hollow on the inside and is provided with an oil inlet groove 6021 on the outer periphery. The oil injection groove 6012 is embedded in the oil inlet groove 6021 of the clamping ring 602 and is connected to the inside of the clamping ring 602 through the oil outlet 6015, so that oil can be injected into the inside of the clamping ring 602. A plurality of piston columns 6022 are arranged in the clamping ring 602. When oil is injected into the clamping ring 602, the piston columns 6022 extend out to clamp the upper connector 10. Conversely, when the oil is extracted from the clamping ring 602, the piston columns 6022 retract to loosen the upper connector 10.

[0057] The outer rail 601 is movably connected to the second telescopic branch 501 of the second upper arm 5 through a universal hinge structure on the outer side, and is provided with a rail for rotating the clamping ring 602 on the inner side. When the rotating driving device on the outer rail 601 is started, the bevel gear 605 rotates to drive the clamping ring 602 to rotate, thereby controlling the threaded connection between the upper connector 10 and the lower connector 11. When the clamping ring 602 starts to rotate, the clamping jaw of the first upper clamping device 4 loosens the clamping of the upper connector 10, and the lower clamping device 8 clamps the lower connector 11.

[0058] In addition, in the present embodiment, the upper connector 10 and the lower connector 11 can also be connected through a middle piece, for example, a short connecting pipe is used as a middle piece, an internal thread is formed in the short connecting pipe, an external thread is formed on the lower end of the upper connector 10 and the upper end of the lower connector 11, and the lower end of the upper connector 10 and the upper end of the lower connector 11 are inserted into the short connecting pipe and screwed to realize the connection of the two connectors.

[0059] Embodiment 4

[0060] The bottom end and the top end of the vertical support 201 are respectively provided with guide supports 208, the side of the guide support 208 away from the vertical support 201 is provided with two arc-shaped openings 209 that open outward, and the side of the two arc-shaped openings 209 adjacent to the vertical support 201 is provided with an arc-shaped stop ring 210 that fits the outer periphery of the upper connector 10 and the lower connector 11.

[0061] Specifically, during the connecting process, the upper connector 10 and the lower connector 11 are preliminarily positioned by the two guide supports 208, and then the clamping device can more quickly and conveniently clamp the upper connector 10 and the lower connector 11. More specifically, when the transverse sliding saddle 211 and the longitudinal sliding saddle 212 structure in embodiment 5 is used, the arc-shaped opening 209 of the lower guide support 208 is first controlled to contact the lower connector 11 in the XY plane by the transverse driver 215 and the longitudinal driver 218, and then guided to contact the lower connector 11 by the arc-shaped opening 209 to the arc-shaped stop ring 210, at this time the lower arm 7 and the lower support have a relatively close position, and then the lower arm 7 is controlled to descend to the lower clamping device 8 to clamp and fix the top end of the lower connector 11 by the method in embodiment 2; then the upper connector 10 is lifted by the lifting device in embodiment 1 to the position close to the upper guide support 208 and the arc-shaped stop ring 210 contacts the upper connector 10, at this time the upper connector 10 and the first upper arm 3 and the second upper arm 5 have a relatively close pose, and then the upper connector 10 is more quickly clamped and fixed by the first upper clamping device 4 and the second upper clamping device 6.

[0062] Embodiment 5

[0063] The fixed seat 2 further comprises a transverse sliding saddle 211, a longitudinal sliding saddle 212 and a saddle seat 213, the saddle seat 213 is fixedly arranged on the offshore platform 1, the transverse sliding saddle 211 is transversely slidably arranged on the saddle seat 213, the longitudinal sliding saddle 212 is longitudinally slidably arranged on the transverse sliding saddle 211, and the vertical support 201 is fixedly arranged on the longitudinal sliding saddle 212. The saddle seat 213 is provided with a transverse guide rail 214 and a transverse drive 215, the bottom of the transverse sliding saddle 211 is provided with a transverse sliding block 216, the transverse sliding block 216 slides in the transverse guide rail 214 and is connected with the transverse drive 215; the transverse sliding saddle 211 is provided with a longitudinal guide rail 217 and a longitudinal drive 218, the bottom of the longitudinal sliding saddle 212 is provided with a longitudinal sliding block 219, the longitudinal sliding block 219 slides in the longitudinal guide rail 217 and is connected with the longitudinal drive 218.

[0064] Specifically, the saddle seat 213 is fixedly arranged, and the transverse sliding saddle 211 and the longitudinal sliding saddle 212 are respectively arranged to slide along the XY direction, so as to adjust the position of the upper and lower guide supports 208 and the position of the vertical support 201, so that they are closer to the pipe joint position. The transverse drive 215 and the longitudinal drive 218 are, for example, motor-screw rod structures, a screw rod is arranged in the guide rail, a screw nut is arranged on the screw rod and serves as the corresponding transverse sliding block 216 or longitudinal sliding block 219 connected with the transverse sliding saddle 211 or longitudinal sliding saddle 212, so that the corresponding direction movement of the transverse sliding saddle 211 or longitudinal sliding saddle 212 is independently controlled by two motors.

[0065] Working mode and principle of the present application:

[0066] Firstly, the arc-shaped opening 209 of the lower guide support 208 contacts the lower pipe joint 11 to the arc-shaped blocking ring 210 contacts the lower pipe joint 11 through the transverse drive 215 and the longitudinal drive 218, and then the lower clamping device 8 clamps and fixes the top end of the lower pipe joint 11; then the upper pipe joint 10 is lifted by the lifting tool until the upper pipe joint 10 is close to the upper guide support 208 and the arc-shaped blocking ring 210 contacts the upper pipe joint 10, and then the first upper clamping device 4 and the second upper clamping device 6 clamp and fix the upper pipe joint 10; then the angle of the upper pipe joint 10 is adjusted by the first upper arm 3 and the angle adjusting mechanism 9, and after the angle of the upper pipe joint 10 is aligned with the lower pipe joint 11, the first upper clamping device 4 is loosened, the second upper clamping device 6 is rotated and moved downward to make the upper pipe joint 10 threadedly connected with the lower pipe joint 11. After one upper pipe joint 10 is connected with the lower pipe joint 11, the original lower pipe joint 11 is loosened by the lower clamping device 8, the first upper clamping device 4 and the second upper clamping device 6 tightly clamp the original upper pipe joint 10 and move it downward to the sea surface to become a new lower pipe joint 11, then the new lower pipe joint 11 is clamped by the lower clamping device 8, the upper clamping device is loosened and moved upward to clamp the new upper pipe joint 10, and then the pipe joint is connected again to realize continuous and stable pipe joint.

[0067] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions recorded in the above embodiments can be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A marine thermal energy conversion (OTEC) offshore pipe anti-sway connection device, characterized in that, include: Fixed mount, installed on an offshore platform; The first upper arm has its inner end connected to the fixed base and its outer end connected to a first upper clamping device. The second upper arm has its inner end connected to the fixed base and its outer end connected to a second upper clamping device. The lower arm has its inner end connected to the fixed base and its outer end connected to a lower clamping device. The first upper clamping device and the second upper clamping device clamp the upper pipe at different axial positions on the outside, and the lower clamping device clamps the lower pipe on the outside. The fixed base includes a vertical support, and the inner ends of the first upper arm, the second upper arm, and the lower arm can all be slidably connected to the vertical support. The vertical support is provided with an upper arm guide rail and a lower arm guide rail. An upper slider connecting the first upper arm and the second upper arm is slidably provided in the upper arm guide rail, and a lower slider connecting the lower arm is slidably provided in the lower arm guide rail. The upper slider is connected to a first linear driver, and the lower slider is connected to a second linear driver. The first upper arm, second upper arm, and lower arm achieve vertical movement via a vertical support. The vertical movement of the first upper arm, second upper arm, and lower arm enables height control of the upper pipe. After connecting an upper pipe to a lower pipe, the lower clamping device releases the original lower pipe, and the first and second upper clamping devices clamp the original upper pipe and lower it to the sea surface to become a new lower pipe. Then, the lower clamping device clamps the new lower pipe, and the upper clamping device releases and moves upward to clamp the alternately replaced new upper pipe. This process is repeated to achieve continuous pipe connection.

2. The marine thermal energy conversion offshore pipe anti-sway connection device according to claim 1, characterized in that, The first upper arm and the second upper arm are connected by an angle adjustment mechanism, which is connected to the upper slider. The angle adjustment mechanism includes a housing, inside which a meshing gear and a toothed sector are rotatably disposed. The gear is connected to a first rotation drive device, the toothed sector is connected to the first upper arm, and the toothed shaft of the toothed sector is rotatably connected to the second upper arm.

3. The marine thermal energy conversion offshore pipe anti-sway connection device according to claim 2, characterized in that, The first upper arm includes a first telescopic support arm, which is movably connected to the first upper clamping device; The second upper arm includes a second telescopic support arm and a rotating support arm. The second telescopic support arm is movably connected to the second upper clamping device, and the second telescopic support arm is connected to the tooth shaft of the toothed sector through the rotating support arm.

4. The marine thermal energy conversion offshore pipe anti-sway connection device according to claim 1, characterized in that, The first upper clamping device and the lower clamping device each include clamping claws; The second upper clamping device includes an outer rail with an annular structure and a clamping ring. The inner side of the clamping ring clamps the lower end of the upper tube, and the outer side of the clamping ring is rotatably connected to the inner side of the outer rail. The outer side of the outer rail is movably connected to the second upper arm.

5. The marine thermal energy conversion offshore pipe anti-sway connection device according to claim 4, characterized in that, The clamping ring is provided with annularly distributed conical teeth, and the outer rail is provided with a second rotation drive device, which meshes with the conical teeth on the clamping ring through a bevel gear.

6. The marine thermal energy conversion offshore pipe anti-sway connection device according to claim 1, characterized in that, The bottom and top of the vertical support are respectively provided with guide supports. The side of the guide support away from the vertical support is provided with two arc-shaped openings that open outwards. Between the two arc-shaped openings, on the side adjacent to the vertical support, there is an arc-shaped retaining ring that fits against the outer periphery of the upper and lower pipes.

7. The marine thermal energy conversion offshore pipe anti-sway connection device according to claim 1, characterized in that, The fixed base also includes a transverse saddle, a longitudinal saddle, and a saddle seat. The saddle seat is fixedly installed on the offshore platform. The transverse saddle is slidably mounted on the saddle seat. The longitudinal saddle is slidably mounted on the transverse saddle. The vertical support is fixedly mounted on the longitudinal saddle.

8. The marine thermal energy conversion offshore pipe anti-sway connection device according to claim 7, characterized in that, The saddle is provided with a transverse guide rail and a transverse driver. The bottom of the transverse saddle is provided with a transverse slider. The transverse slider slides within the transverse guide rail and is connected to the transverse driver. The transverse slide saddle is provided with a longitudinal guide rail and a longitudinal driver. The bottom of the longitudinal slide saddle is provided with a longitudinal slider, which slides within the longitudinal guide rail and is connected to the longitudinal driver.

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