WO2018000535A1 - Pipeline supporting structure for unmanned ship pipeline maintenance - Google Patents

Abstract

Provided is a pipeline supporting structure for unmanned ship pipeline maintenance, comprising a lower-end guide rail (200), an upper-end guide rail (300), a pipe seat assembly, a trolley component (400), and a pipeline lifting assembly (500). The lower-end guide rail (200) comprises a pair of tubular guide rail components (202) that are maintained parallel to each other by means of multiple tubular transverse pieces (204). The tubular guide rail component (202) is provided with two ends (206, 208) with upward angles. A diagonal crossing component (210) is connected to a pair of center components, so as to provide additional structural integrity relative to the lower-end guide rail. The upper portion guide rail (300) comprises a pair of parallel beams (302). A bottom face of an end cap plate (304) is welded to a cylindrical side plate (320), and the cylindrical side plate (320) corresponds to the lower portion guide rail (200) on a lower part of a cylindrical side plate (220). Repair of submarine pipelines can be completed by adopting the pipeline supporting frame for unmanned ship maintenance and proper auxiliary equipment, without requiring personnel allocation, and the pipelines do not need to be lifted onto an unmanned ship for pretreatment, saving time and economic costs.

Description

Pipe support structure for maintenance of unmanned ship pipelines Technical field

The invention relates to a maintenance tool, in particular to a support structure for pipeline maintenance carried by an unmanned ship in maintenance of a submarine oil and gas pipeline.

Background technique

Support structure maintenance is a part of the fasteners installed outside the pipeline at the leakage site - support structure, to achieve the purpose of maintenance pipeline leakage, support structure maintenance technology is now mature application in land and submarine oil and gas pipeline maintenance operations, repair according to support structure The application of technology in submarine oil and gas pipelines, the most critical component of the current maintenance technology is the submarine pipeline support structure. Most of the support structures are made in two halves and are fixed to the pipe by bolting or welding when used, so they can be divided into welded and bolted. The welded support structure can improve the repair reliability and the bolt connection is more convenient.

For the maintenance of submarine pipelines in China's vast seas, the current method is to install and repair underwater submersibles in Repulse Bay. For deep water areas, the submarine pipelines are referred to the working vessels, and the pipeline damages are pretreated directly on the working vessels. Support the structural repair and installation of the pipeline. However, in the case of extremely low visibility of water turbidity, the above two methods have obvious drawbacks. Due to the need to arrange support ships, personnel, maintenance equipment and other auxiliary equipment to the maintenance site, and after the operation is completed, support ships, personnel, maintenance equipment and The recovery of other auxiliary equipment is therefore costly and economical.

The support structure equipment of domestic manufacturers is mainly applied to land oil and gas pipelines. When used for temporary maintenance, the oil and gas pipelines can be normally sealed for 2-3 months to ensure that oil and gas does not leak in the seal around the support structure. When used for permanent maintenance, it can be used. The support structure is integrally welded to the pipe. At present, domestic manufacturers have not produced supporting structures for submarine oil and gas pipelines. The domestic equipment technology of overseas submarine oil and gas pipelines is relatively mature. With the rapid development of unmanned ship technology, some special structure support structures have been developed and carried on unmanned ships. The submarine pipeline can be repaired without the need for staffing, using unmanned ships and maintenance support structures and appropriate auxiliary equipment, without the need to lift the pipeline to the unmanned ship for pre-treatment, saving time and economic costs.

Summary of the invention

It is an object of the present invention to provide a pipe support structure for maintenance of unmanned ship pipelines, comprising: a lower end rail, an upper end rail, a socket assembly and a trolley component, and a pipe lifting assembly.

Preferably, the lower end rail includes a pair of tubular rail members such that the plurality of tubular cross members maintain a parallel relationship, the rail members have angled upwardly opposite ends, and the diagonal members are coupled to the pair of center members to provide attachment to the lower end rails Structural integrity.

Preferably, the rail members are tubular members that are welded to each other and the rail member includes a hole in the tubular member so that the tubular member can be submerged or emptied.

Preferably, the tubular element of the pipe support structure is submerged during use to eliminate the buoyancy of the sealed tubular pipe; or when the pipe is used in the air to support the space, the pipe is evacuated to minimize the weight of the pipe support structure.

Preferably, a pair of end base plates are welded to the bottom surface of the upwardly facing end of the tubular rail member and the bottom surface of the top intersecting member, a pair of inner base plates being welded to the bottom ends of the rail members and the inner intersecting members, the end base plates and the inner base plates having a hole for draining any water deposited on the upper surface of the base plate, a pair of cylindrical side plates attached to the upper end surface of the inner base plate, a cylindrical side plate welded to the inner base plate, and a pair of vertical columns from the inside The upper end surface of the base plate extends upward, and the reinforced plate is used for vertical side plate reinforcement, and the force plate Solder to the vertical column and to the inner base plate, the tubular member and the intersecting elements.

Preferably, a plurality of lifting eyes are welded to the rail members for lifting the duct support structure, each lifting eye including a hole for receiving a pin attached to the hook and loop of the hook lock.

Preferably, the end intersecting element comprises a centrally placed hole for receiving the end of the hook, the hook is fastened to the end intersecting element, the coastal bottom pushes the pipe support structure, and the reduced tubular element is welded to the pair of end intersecting elements Above, the element is in line with the hook for sliding reinforcement purposes.

Preferably, the upper rail comprises a pair of parallel beams, the beam shape structure is S-shaped, the beam is welded to a pair of end cap plates, one end of each beam, the end plates are welded to the flange and the abdomen of the beam, and the end plates are rectangular plates. The height is slightly higher than the height of the beam, a plurality of reinforcing plates are welded to the end cap plate and the beam, and the bottom surface of the end cap plate is welded to the cylindrical side plate, and the cylindrical side plate corresponds to the lower rail of the cylindrical side plate.

Preferably, each end cap plate includes a pair of holes for receiving a tubular mating post that extends through the bore in the end cap plate and is welded to the end cap plate, the stabilizing plate having an opening for receiving the tubular The stud is welded to the tubular mating post, the stabilizing plate having an arcuate rim that is joined to the cylindrical side panel and welded thereto.

Preferably, the socket and the trolley component are mounted between a pair of longitudinal beams, the trolley assembly comprising a trolley component having a pair of flanges and an abdomen, the trolley beam is W-shaped, and the thickness of the W-shaped flange is constant. The top plate is welded to one end of the flange.

Preferably, the trolley beam comprises a plurality of holes extending through the flange of the lower part of the abdomen, a plurality of tapered disc wheels are rotatably mounted on the shaft, and the shaft is connected to the trolley beam by a nut, and the plurality of upper ends are rolled. The stick is rotatably mounted on the outer surface of the flange.

Preferably, the trolley beam has a driving end and a traction end, and the driving plate is linked to the driving end of the trolley beam by welding, the driving plate includes a threaded opening, the thread is engaged to the threaded portion of the driving rod, and the traction plate is welded to the trolley beam On the end of the trolley, the drive rod extends and passes through the threaded opening, at the lower portion of the top plate and through the enlarged opening.

Preferably, the pipe lifting assembly comprises a pair of inflatable bags placed between the bottom rail and the upper rail, inside the cylindrical side panel, the manifold panel is connected to the inflatable bag by a hose, and the manifold panel comprises Valves and control mechanisms for pressurized and depressurized air bags.

The above as well as other objects, advantages and features of the present invention will become apparent to those skilled in the <

DRAWINGS

Some specific embodiments of the present invention are described in detail below by way of example, and not limitation. The same reference numbers in the drawings identify the same or similar parts. Those skilled in the art should understand that the drawings are not necessarily drawn to scale. The objects and features of the present invention will become more apparent in consideration of the following description in conjunction with the accompanying drawings.

Figure 1 shows a plan view of a pipe support structure in accordance with the present invention;

Figure 2 shows an oblique side view of the header assembly lowered into position on the trolley member;

Figure 3 is a view taken along line 3-3 of Figure 2;

Figure 4 shows a view taken along line 4-4 of Figure 2

Figure 5 is a view taken along line 5-5 of the lower end rail of Figure 2;

Figure 6 shows a view taken along line 6-6 of Figure 5;

Figure 7 is a plan view of the upper rail;

Figure 8 is a view taken along line 8-8 of Figure 7;

Figure 9 is a view taken along line 9-9 of Figure 7;

Figure 10 is an oblique side view of the stem assembly and the trolley component;

Figure 11 is a view taken along line 11-11 of Figure 10;

Figure 12 is a view taken along line 12-12 of Figure 11;

Figure 13 is a view taken along line 13-13 of Figure 10;

Figure 14 is a cross-sectional view of the collet cone and the lock chamber assembly of the rotary support drive rod;

Figure 15 is a partial cross-sectional view of the torque tool;

Figure 16 is an oblique cross-sectional view of the lock in a locked position;

Figure 17 is an oblique sectional view of the lock in an unlocked position;

Figure 18 is a graphical view of a subsea pipeline with unfolded cable clamp weighing, crank clamp weighing, top pack assembly and pipe support structure;

Figure 19 is a perspective side elevational view of the dredger assembly mounted on the unmanned ship during the dredging operation;

Figure 20 is a diagrammatic view of the mounting of the top pack assembly below the pipeline;

Figure 21 is a graphical view of a pipe support structure pushed to a position below the pipeline;

Figure 22 is a perspective side elevational view of the pipe support structure with the top bag being deflated during the support line.

detailed description

The pipe support structure, usually designated as 100, is generally shown in Figures 1, 2, 3 and 4. The pipe support structure 100 includes a lower end rail 200, an upper end rail 300, a header assembly and a trolley component 400, and a pipe lift assembly 500.

Referring to Figures 5 and 6, the lower end rail 200 will be explained in detail. The lower end rail 200 includes a pair of tubular rail members 202 such that a plurality of tubular cross members 204 are maintained in a parallel relationship. As shown in Figure 6, the rail member 202 has upwardly facing ends 206 and 208, the angle of which is upward. The diagonal joint members 210 are coupled to a pair of center members 204 to provide additional structural integrity with respect to the lower end rails. It should be understood that the rail members 202, 204 and 210 are both tubular members, preferably they are welded to each other. The rail members 202, 204 and 210 include apertures 212 in the tubular member such that the tubular member can be submerged or emptied. The tubular element of the pipe support structure 100 is submerged during the preferred use to eliminate the buoyancy of the sealed tubular pipe. However, when the duct support space 100 is used in air, it is desirable to evacuate the duct to minimize the weight of the duct support structure 100.

Referring to Figure 6, a pair of end base plates 214 are welded to the bottom surfaces of the upwardly facing ends 206 and 208 of the tubular rail member 202 and the bottom surface of the top end intersecting member 204. A pair of inner base plates 216 are welded to the bottom ends of the rail members 202 and the inner intersecting members 204. End base plate 214 and inner base plate 216 have holes 212, It is used to evacuate any water deposited on the upper surfaces of the base plates 214 and 216. The base plates 214 and 216 facilitate the sliding of the pipe support structure 100 below the pipeline while also providing a larger bearing surface area of the sea floor to prevent the pipe support structure 100 from sinking into the soft sea floor during the support of the pipe, as will be done below. Explanation. When an object sinks into the sea floor, it creates a great attraction, making it difficult to recover the object. Referring to Figures 5 and 6, attached to the upper end surface 218 of the inner base plate 216 is a pair of cylindrical side plates 220. The cylindrical side panel 220 is preferably welded to the inner base panel 216. A pair of vertical posts 222 extend upward from the upper surface 218 of the inner base plate 216. Referring to Figure 5, the vertical side panels 222 are reinforced with a force plate 224 that is welded to the vertical posts 222 and the inner base plate 216, to the tubular member 202, and to the intersecting members 204. Additionally, the force plate 226 is used to reinforce the inner base plate 216 with the tubular members 204 and 202.

Referring to Figures 5 and 6, a plurality of lifting eyes 228 are welded to the rail member 202 for lifting the catheter support structure 100. Each of the lifting eyes 228 includes a hole 203 for receiving a pin (not shown) on a shackle (not shown) that is coupled to a hook lock (not shown).

Referring to Figure 6, the end intersecting member 204 includes a centrally located aperture 232 for receiving the end 234 of the hook 236. The hook 236 is fastened to the end intersecting member 204. The hook 236 is used to propel the pipe support structure 100 along the coastal bottom. The reduced tubular member 238 is welded to a pair of end intersecting members 204 that are aligned with the hook 236 for sliding reinforcement purposes.

Referring to Figures 7, 8 and 9, the upper rail 300 will be described in detail. The upper rail 300 includes a pair of parallel beams 302. It should be understood that different beam shape configurations can be used for the upper rail 300. In a preferred embodiment, the beam shape structure uses an S shape for reasons explained below. Beam 302 is welded to a pair of end cap plates 304. At one end of each beam 302, end plates 306 are welded to flange 302a and abdomen 302b of beam 302. As shown in Figures 7 and 8, the end plate 306 is a rectangular plate having a height that is slightly higher than the height of the beam 302. A plurality of stiffeners 308 are welded to the end cap plate 304 and to the beam 302. The bottom surface of the end cap plate 304 is welded to the cylindrical side plate 320, which corresponds to the lower rail 220 of the cylindrical side plate 220.

Each end cap plate 304 includes a pair of apertures for receiving a tubular mating post 314. The tubular mating post 314 extends through the aperture in the end cap plate 304 and is welded to the end cap plate 304. Stabilizing plate 316 has an opening 318 For receiving the tubular mating post 314, the stabilizing plate 316 is welded to the tubular mating post 314. Stabilizing plate 316 has an arcuate rim that is joined to and welded to cylindrical side plate 320.

It is important to note that the longitudinal and lateral distances between the mating posts 314 correspond to the longitudinal and lateral spacing between the vertical posts 222 of the lower end rail 200. As shown in FIG. 2, the vertical post 222 is received within the mating post 314 for providing a telescopic connection relationship for reasons explained below.

Referring to Figures 10, 11, 12 and 13, the header assembly and the trolley component 400 are explained in detail below. As shown in Figures 1 and 13, the header and carriage component 400 is mounted between a pair of longitudinal beams 302. A trolley assembly, generally designated 410, includes a trolley component having a pair of flanges 412a and abdomens 412b. In a preferred embodiment, the trolley beam 412 is W-shaped, as specified by AISC. The thickness of the W-shaped flange 412a is constant. The top plate 414 is welded to one end of the flange 412a.

Referring to Figures 10 and 13, the trolley beam 412 includes a plurality of apertures 416 extending through the flange 412a at the lower portion of the abdomen 412b. A plurality of tapered disc wheels are rotatably mounted on the shaft 420, and the shaft 420 is coupled to the trolley beam 412 by a nut 422, as shown in FIG. The tapered portion of the disk wheel 418 corresponds to the tapered portion of the flange 302a of the parallel beam 302. A plurality of upper end bars 424 are rotatably mounted on the outer surface of the flange 412a. The rolling bar 424 is mounted such that the outer end surface of the rolling bar 424 is collinear with the surface of the tapered portion of the flange 302a.

Referring to Figure 10, the trolley beam 412 has a drive end 426 and a trailing end 428. The drive plate 430 is preferably linked to the drive end 426 of the trolley beam 412 by welding. The drive plate 430 includes a threaded opening 432 (Fig. 12) that is threaded into the threaded portion of the drive rod 450 as shown in FIG. The traction plate 440 is similarly welded to the trolley end 428 of the trolley beam 412. The traction plate 440 includes an enlarged opening 442 that is in line with the threaded opening 432 of the drive plate 430. The drive rod 450 extends through the threaded opening 432 at a lower portion of the top plate 414 and through the enlarged opening 442.

A saddle device, generally designated 460, includes a pair of saddle brackets 462, preferably made of W-shaped structural elements. The top surface 414 includes a pair of saddle support profiles (not shown) that are slightly larger than the saddle support 462, into which the saddle bracket 462 can be inserted until the bottom end 464 of the saddle support 462 is coupled to the abdomen 412b of the trolley beam 412. ,As shown in Figure 1. Referring to Figure 13, the bottom end 464 of the saddle support 462 includes a notched portion 466 that passes through the abdomen 462b with the drive rod 450 passing through the notched portion to allow for unobstructed wear. Over. The chamfering of the bottom end 464 of the flange 462a of the saddle support 462 facilitates insertion of the Ou support 462 into the inverted saddle support profile. The saddle support 462 is movable in the vertical direction for reasons explained below. The upper end 468 of the saddle support 462 has a duct plate 470 that is welded to the flange 462a of the saddle support 462. The upper end 468 of the saddle support 462 includes an elongated opening 472 that extends through the abdomen 462b for providing a nip point for the unmanned ship manipulator.

Referring to Figure 1, a drive rod 450 is rotatably supported on each end of the chamber assembly 480. Referring to Figure 14, the chamber assembly 480 includes a pair of seated ball bearings 482 having an inner diameter that corresponds to the smooth portion 450a of the drive rod 450. Referring to Figure 1, the chamber 480 is bolted to the inverted drive rod bracket 484 which is coupled to the end plate 306 which is coupled to the ends of the parallel beam 302. Referring to Figure 14, the outer end ball bearing 482 is held in place by a bearing nut 486. The outer end 450b of the drive shaft 450 receives the drive shaft sleeve 488 and the sliding nut 490. Referring to Figures 14 and 16, in the preferred embodiment, the sliding nut 490 and the drive rod end 450b are coupled together by a key and pin slot connection. It should be understood that other types of connections may also be used. The sliding nut retains its 494 mounted to the end of the drive rod 450 in a bolted manner. The trough receiver 495 is mounted on the chamber assembly 480 for reasons explained below.

The sliding nut 490 includes a hexagonal end 491 that is coupled to the annular disk 492. As shown in Figure 16, the annular disk 492 has a plurality of recesses 493 that surround the circumference.

Referring to Figures 14, 16 and 17, the piston assembly 350 is mounted on the trough receiver 495. The piston assembly 350 includes an inner chamber 350 and an outer chamber 354. The inner chamber 352 has an upper end portion 356 that is received within the lower end portion 358 of the outer chamber 354. The piston rod 360 extends through a central path 362 of the inner and outer chambers 352 and 354, respectively. The piston rod member 360 includes a handle 364 coupled to the upper end of the piston rod member 360. The piston rod 360 includes a flange 366. A compression spring 368 is placed around the piston rod 360 at the upper portion of the flange 366. The upper end of the compression spring 368 is in contact with the inner surface 370 of the outer chamber 354, and the lower end of the compression spring 368 is in contact with the flange 366.

Referring to Figures 14 and 16, the piston assembly 350 is shown engaged with the recess 493 of the annular disk 492. In the engaged position, the compression spring 368 presses against the bottom surface of the flange 366 into the point of attachment to the inner chamber 352. Figure 16 best illustrates that when the piston rod 360 is in the engaged position, the handle 364 is placed in the bottom slot. On the support 372. The piston rod 360 is released by rotating the handle 364 by approximately 90 degrees to lift the piston rod as the handle 364 rises over the bottom trough support 372 until it rests within the upper trough support 374, as shown in FIG.

Referring to Figures 2 and 22, the pipe lift assembly 500 includes, in a preferred embodiment, a pair of inflatable packs 502 disposed between the bottom rail 200 and the upper end rail 300, inside the cylindrical side panels 220 and 320. As shown in FIG. 22, the manifold panel 504 is coupled to the inflatable bag 502 via a hose 506. Although not shown in detail, the manifold panel 504 includes valves and control mechanisms typically used in the industrial field for the pressurized and depressurized air bag 502.

As discussed above, the duct support structure 100 is used to support the subsea pipeline at a reasonable distance above the sea floor of 3-5 feet and allows for continuous adjustment of the range between the lowest slope and the highest slope to tilt the pipeline and to perform at the subsea location Position the pipeline sideways during maintenance operations.

A detailed description of the complete operation of subsea pipelines for subsea maintenance can be found in the U.S. pending application "Methods for Repairing Subsea Pipelines". The contents of the above-mentioned co-pending application are hereby incorporated by reference in their entirety by reference.

18 is a diagrammatic view of a subsea pipeline with unfolded cable clamp weigher 30, crank clamp weigh 40, top wrap assembly 50, and pipe support structure 100. The unmanned ship will deploy the equipment to the designated location on the sea floor, as shown in Figure 18. The four duct support structures 100 as shown in Figure 18 are typically used for pipeline maintenance operations.

Since the equipment is in its set position as shown in Figure 18, the dredging operation begins. The dredger package 60 is shown in Figure 19 and is typically used on unmanned vessels on decks of bilges (not shown) where it is used in conjunction with unmanned vessels. The unmanned boat unfolds and swims to the mounting position of the top carrier assembly 50. The nozzle 62 of the dredger bag 60 is placed adjacent to the pipe, using the unmanned vessel actuator 90. The dredger 60 is activated, as shown in Figure 19, and the nozzle 62 engages the unmanned boat actuator 90 to allow selective dredging to be performed. The dredging continues until it is observed with the eyes that the sac-like container 64 of sufficient size has been dug under the pipeline. The digging depth of the bladder container 64 is measured by the unmanned ship manipulator 90. A similar bladder mechanism 64 is shown in another location under the pipeline and adjacent to the appropriately positioned top pack assembly 50.

After performing the dredging operation on the bladder container 64, the unmanned boat swims toward the top pack assembly 50 and releases the stem portion 52 and pulls the cord 54 from the top pack base assembly 56. The unmanned boat hauls the rod section 52 of the rope 54 below the pipeline. The unmanned boat releases the lever section 52 and repositions it to the other side of the pipeline where it uses the manipulator to shorten the length of the rail section 52. Referring to Figure 20, the unmanned boat is free from the pipeline section, pulling the top pack assembly 50 under the pipeline and pulling it into the bladder vessel 64. When the guiding structure 58 of the top pack assembly 50 is only fixed to the opposite side of the pipeline, the unmanned boat stops as shown in FIG. The same steps are performed for each top pack component 50. The top pack assembly 50 lifts the pipeline about one meter away from the sea floor by unmanned boat inflation.

Referring to Figure 21, the pipe support structure 100 is then installed below the pipeline in the following manner. The second unmanned vessel, i.e., the unmanned vessel 2, operates a crankshaft (not shown) on the crankshaft clamp 40 to release the crankshaft cable 42, while the first unmanned vessel, the unmanned vessel 1, wraps the cable 42 around The cable clamp weighs 30 on the bollard and then wraps around the pipeline. The unmanned vessel 1 uses a manipulator 90 to pass a rod portion (not shown) of the crank cable 42 below the pipeline. The unmanned vessel 1 swims to the other end of the pipeline and contracts the rod segments. The unmanned vessel 1 moves to the pipeline support mine 100 and connects the crank cable 42 to the pull hook 236 of the pipeline support structure 100 (Fig. 6). The unmanned vessel 1 checks the winding condition of the cable to ensure that the cable 42 has been properly placed around the bollard without any obstacles. The unmanned vessel 2 removes the saddle support 462 from the saddle member 460 (Fig. 10) that is closest to the pipeline for receiving the pipeline. Referring to Figure 21, the unmanned vessel 2 operates the crankshaft to be towed within the pipeline 42 while the unmanned vessel 1 observes the towing condition of the pipeline support structure 100. When the saddle support 462 on the trolley component 410 of the pipe support structure 100 is in contact with the pipeline, the crankshaft is stopped. The unmanned vessel 1 inserts the second saddle support 462 into the contour of the trolley beam 412 or with the trolley 410 until the saddle support 462 can be vertically inserted into the saddle support profile. The cable 42 is withdrawn from the crankshaft such that the unmanned vessel 1 can remove the cable eye (not shown) from the hook 236 of the pipe support structure 100. Once released, the unmanned vessel 1 releases the cable 42 and the unmanned boat 2 pulls out the cable 42 on the crankshaft. The same procedure involves pushing another pipe support structure 100 below the pipeline as the crankshaft directly pushes the pipe support structure 100 under the pipeline, although the mooring line 32 is not required.

Unmanned boat 1 and unmanned boat 2 each engage a hydroentangle within contour 504 of inner pipe support structure 100. Pumps (not shown) on the unmanned boat operate to inflate the inflatable bag 502 to reach them The maximum height is such that the lower pipe is approximately 1200 mm from the sea floor. Once this height is reached, the valve closes. The unmanned vessel 1 and the unmanned vessel 2 are then repositioned to the outermost duct support structure 100, with the corresponding inflatable pack 502 being inflated such that the lower end duct is approximately 900 millimeters from the sea floor, at which time the valve is closed.

The damaged section of the pipeline is then removed from between the two conduit support structures 100. The remaining pipe ends can become misaligned after the damaged section of the pipeline is removed. If the pipe ends do not coincide in the vertical direction, the inflatable bag 502 is either further inflated or vented until the ends are properly aligned.

If the pipe ends do not coincide horizontally, the unmanned boat will employ a torque tool 600 (Fig. 15) having a hexagonal socket 602 corresponding to the hexagonal end 491 of the sliding nut 490. Torque tool 600 includes a nose 603 and a pair of fins 604. The nose 603 guides the connection of the receptacle 602 and the sliding nut 490 through the receiver 495. The fins 604 are mounted into the slots of the recessed sockets 495 to prevent the torque tool 600 from rotating as the socket 602 rotates about the sliding nut 490 and the drive rod 450. Preferably, the torque tool is hydraulically powered by the unmanned boat. The torque tool 600 is coupled to the sliding nut 490 using a piston rod 360 (Fig. 17) at the release position. The hydraulically powered torque tool 600 drives the drive rod 450 via a sliding nut 490 that causes the header assembly and the trolley component 400 to move the conduit laterally. Once the proper position is obtained, the piston rod 360 engages at the recess 493 to lock the lateral position of the conduit.

After the pipeline is serviced, the duct support structure 100 is removed by venting the charge pack 502 and removing the saddle support 462 from the trolley beam 412. The pipe support structure 100 is pulled from below the pipeline and the pipeline is still supported by the top pack 50. The remainder of the instrument is shrunk in the reverse order of the same steps as before.

The present invention has been described and described in detail herein by way of illustration and description of the embodiments of the present invention

The present invention has been described with reference to the specific illustrative embodiments, and is not limited by the scope of the appended claims. It will be appreciated by those skilled in the art that the embodiments of the invention can be modified and modified without departing from the scope and spirit of the invention.

Claims (7)

A pipeline supporting structure (100) for maintenance of unmanned ship pipelines, comprising: a lower end rail (200), an upper end rail (300), a header assembly and a trolley component (400), and a duct lifting assembly (500), the lower end rail (200) including a pair of tubular rail members (202), such that The tubular cross members (204) maintain a parallel relationship, the rail members (202) have angled upward ends (206, 208), and the diagonal members (210) are coupled to a pair of center members to provide attachment to the lower end rails Structural integrity; the upper rail (300) includes a pair of parallel beams (302), the beam-shaped structure uses an S-shape, and the beam (302) is welded to a pair of end cap plates (304), each beam (302) At one end, the end plate (306) is welded to the flange (302a) and the abdomen (302b) of the beam (302), and the end plate (306) is a rectangular plate having a height slightly higher than the height of the beam (302), and a plurality of reinforcing plates ( 308) welded to the end cap plate (304) and to the beam (302), the bottom surface of the end cap plate (304) is welded to the cylindrical side plate (320), the cylindrical side plate (320) and the cylindrical side plate (220) The lower rails (220) correspond. A pipeline support structure (100) for unmanned shipboard maintenance according to claim 1, wherein each of said end cap plates (304) includes a pair of holes for receiving tubular fitting columns (314). The tubular mating post (314) extends through the aperture in the end cap plate (304) and is welded to the end cap plate (304), the stabilizing plate (316) having an opening (318) for receiving the tubular mating post ( 314), the stabilizing plate (316) is welded to the tubular mating post (314) having an arcuate rim joined to the cylindrical side panel (320) and welded thereto. A pipeline support structure (100) for unmanned shipboard maintenance according to claim 1, wherein said socket and trolley component (400) are mounted between a pair of longitudinal beams (302). The trolley assembly (410) includes a trolley component having a pair of flanges (412a) and a belly (412b), the trolley beam (412) is W-shaped, the W-shaped flange (412a) is constant in thickness, and the top plate (414) ) soldered to one end of the flange (412a). A pipeline support structure (100) for unmanned shipboard maintenance according to claim 3, wherein said trolley beam (412) includes a plurality of holes (416) extending through the abdomen (412b) ) The lower flange (412a), a plurality of tapered disc wheels are rotatably mounted on the shaft (420), and the shaft (420) is connected to the trolley beam (412) by a nut (422), and the upper end rolling rods are connected. (424) is rotatably mounted on the outer surface of the flange (412a). A pipeline supporting structure (100) for maintenance of an unmanned ship pipeline according to claim 3, wherein the trolley beam (412) has a driving end (426) and a pulling end (428), and a driving board (430) ) is linked to the drive end (426) of the trolley beam (412) by welding. A pipeline support structure (100) for unmanned shipboard maintenance according to claim 5, wherein said drive plate (430) includes a threaded opening (432) for threading engagement to a drive rod (450) The threaded portion, the traction plate (440) is welded to the trolley end (428) of the trolley beam (412), the drive rod (450) extends and passes through the threaded opening (432), at the lower portion of the top plate (414) and Pass through the magnification opening (442). A pipeline support structure (100) for unmanned shipboard maintenance according to claim 1, wherein said pipe lifting assembly (500) comprises a pair of inflatable packages (502) placed on the bottom rail (200). Between the upper end rail (300) and the inside of the cylindrical side panel (220, 320), the manifold panel (504) is connected to the inflatable bag (502) via a hose (506), and the manifold panel (504) includes Valves and control mechanisms for pressurization and decompression of the inflatable bag (502).

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