CN107253161A - A kind of subsea control modules installation tool - Google Patents

Abstract

The invention provides an installation tool for an underwater control module, which is marine engineering equipment for carrying out the tasks of lowering, recovering, buffering and docking of the underwater control module. Cushion pad, three sets of hydraulic shock absorbers installed between the upper support plate and the lower support plate, the shell of the hydraulic buffer is fixedly connected with the upper support plate, the piston rod of the hydraulic buffer is hinged with the lower support plate, and two hydraulic shock absorbers are installed on the edge Flying head, a hydraulic cylinder is installed in the middle of the lower part of the upper support plate. The cylinder of the hydraulic cylinder is fixedly connected with the upper support plate through the flange, and the other end of the cylinder is connected with the fixed sleeve. The locking device is connected with the hydraulic cylinder through the locking flange. The piston rod is fixedly connected, the sliding support rod is installed on the side of the locking device, the positioning key is installed on the outer surface of the housing, the guide rope device is installed symmetrically on both sides of the housing, and the positioning indicator line is painted on the outside of the housing. The soft landing installation of the lower control module is convenient and reliable in operation.

Description

An underwater control module installation tool

technical field

The invention relates to an installation tool for an underwater control module, which belongs to the technical field of marine engineering.

Background technique

The subsea control module (SCM) is the core device of the subsea control system and the execution equipment of the subsea control system. The device is a set of serialized and standardized underwater control equipment that can be independently designed, debugged, and installed. It is used to control the opening and closing of valves on the Christmas tree of underwater production facilities, and to The parameters and seabed information are fed back and processed in real time, and fed back to the main control station on the ground. After years of research, the function and reliability of the underwater control module have been continuously improved and improved. At present, the country has the ability to independently design and manufacture, and has realized the demonstration application in shallow water, and is gradually moving towards the deep water field. However, how to install the subsea control module on the Christmas tree smoothly and reliably is a difficult problem at present.

The existing patents and design schemes of installation tools for underwater control modules are too simplified in the design of the docking mechanism and locking mechanism, the internal composition is not clear enough, and the operation method does not consider the actual underwater working conditions, which is not conducive to the operation of underwater robots. It is difficult to realize in actual engineering, so that the subsea control module cannot be quickly and accurately installed on the Christmas tree.

Contents of the invention

The object of the present invention is to provide an underwater control module installation tool, which is an auxiliary installation device for performing tasks such as SCM lowering, recovery, buffering, and docking.

The purpose of the present invention is achieved in this way: including an upper support plate, an annular lower support plate, a hydraulic buffer arranged between the upper support plate and the annular lower support plate, a housing fixedly connected to the lower end of the annular lower support plate, and a The buffer pad at the lower end of the shell, the hydraulic cylinder set in the middle of the lower end surface of the upper support plate, the locking device connected to the end of the piston rod of the hydraulic cylinder through the locking flange, the shell of the hydraulic buffer and the upper support plate are fixed The piston rod of the hydraulic buffer is hinged to the lower support plate, one end of the cylinder of the hydraulic cylinder is connected to the upper support platform, and the other end is fixedly connected to a fixed sleeve, and the fixed sleeve is provided with a slidable fixed handle. The locking flange is provided with a through hole matched with the end of the fixed handle, and the locking device includes a locking sleeve fixedly connected to the lower end of the locking flange, a locking handle, a slider, a connecting rod, a positioning pin, a locking core, the lower part of the locking sleeve is provided with six tapered holes, the upper part is provided with two square holes, and each tapered hole is provided with a steel ball, and the locking handle passes through the two square holes and through two support blocks and The locking sleeve is connected. The locking handle is provided with external threads with opposite ends. There are two sliders and each slider is provided with internal threads. The sliders are set through the cooperation of internal threads and external threads. On the locking handle, there are two connecting rods, one end of each connecting rod is hinged to the corresponding slider, and the other end is hinged to the upper end of the locking core, the locking core is located in the locking sleeve, and the locking core is hinged. The outer surface is in contact with the steel ball, and the outer surface of the locking sleeve is also provided with a pair of locating pins, and the hoisting socket of the underwater control module is provided with a gap for matching with the two locating pins and a groove for matching with the corresponding steel ball. The upper surface of the above support plate is provided with lifting lugs and two hydraulic joints.

The present invention also includes such structural features:

1. The outer surface of the locking sleeve is symmetrically provided with two sliding support rods, and the end of each sliding support rod is arranged in the guide rail provided on the inner surface of the housing.

2. The outer surface of the upper part of the housing is symmetrically provided with a pair of guide rope sleeves and a pair of ROV handles, and a positioning key is provided on the outer surface of the lower part. The lower docking plate is located in the protection cylinder, and the protection cylinder is provided with a positioning groove that cooperates with the positioning key. A pair of tether seats are symmetrically arranged on the outer surface of the protection cylinder. A guide rope is provided.

3. The outer surface of the underwater control module is provided with an SCM indicator line, and the outer surface of the housing is provided with an installation tool indicator line. The SCM indicator line and the installation tool indicator line are in alignment during the working process.

Compared with the prior art, the beneficial effects of the present invention are: (1) the cushioning structure design of the installation tool can enable the underwater control module to be installed on a soft landing, avoiding damage to the underwater control module during the installation process; (2) The perfect docking and positioning device design for installation tools makes the docking between the subsea control module and the installation base on the subsea oil tree accurate and fast; (3) the locking device uses a set of linkage mechanisms to realize the side unlocking of the ROV, which solves the problem that used to be used in the past. The combination of the screw nut and the worm gear brings about the difficulty of installation and operation.

Description of drawings

Fig. 1 is an overall structural diagram of the present invention;

Fig. 2 is the SCM mounting base figure of the present invention;

Fig. 3 is a diagram of the internal structure of the present invention;

Fig. 4 is a schematic diagram of the underwater control module (SCM) of the present invention;

Fig. 5 is a sectional view of the locking device of the present invention;

Fig. 6 is a schematic diagram of the unlocked state of the locking device of the present invention;

Fig. 7 is a schematic diagram of the locking state of the locking device of the present invention.

Explanation of main symbols in the figure:

1. Lifting lug, 2. Upper support plate, 3. Lower support plate, 4. ROV handle, 5. Locking device, 6. Installation tool indicator line, 7. Positioning key, 8. Hydraulic joint, 9. Hydraulic cylinder, 10. Hydraulic buffer, 11. Guide rope sleeve, 12. Shell, 13. Cushion pad, 14. Protection bucket, 15. Positioning groove, 16. Lower docking plate, 17. Fixed sleeve, 18. Locking flange, 19. Fixed handle, 20. Sliding support rod, 21. SCM hoisting jack, 22. SCM indicator line, 501. Locking handle, 502. Slider, 503. Connecting rod, 504. Locating pin, 505. Locking sleeve , 506. locking core, 507. steel ball, 508. support block one, 509. support block two.

detailed description

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

As shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7, the present invention includes a cylindrical shell 12, and the two ends of the shell 12 are fixedly connected with the lower support plate 3 and the buffer pad respectively. 13. Three sets of hydraulic buffers 10 installed between the upper support plate 2 and the lower support plate 3, the housing of the hydraulic buffer 10 is fixedly connected to the upper support plate 2, and the piston rod of the hydraulic buffer 10 is hinged to the lower support plate 3 The lifting lug 1 is installed at the upper middle position of the upper support plate 2, two hydraulic joints 8 are installed at the edge, the hydraulic cylinder 9 is installed at the lower middle position of the upper support plate 2, and the cylinder barrel of the hydraulic cylinder 9 is fixedly connected with the upper support plate 2 through a flange. The other end of the cylinder is fixedly connected with the fixed sleeve 17, and the locking device 5 is fixedly connected with the piston rod of the hydraulic cylinder 9 through the locking flange 18. The locking flange 18 includes a flange plate and a cylinder arranged on the flange plate Protrusion, the cylindrical protrusion is connected with the end of the piston rod of the hydraulic cylinder, and the cylindrical protrusion is provided with a hole that cooperates with the fixed handle 19, that is, the fixed handle is inserted into the hole of the cylindrical protrusion to achieve locking, and the inner surface of the hole Internal threads can be provided, and external threads can be provided at the end of the fixed handle; the sliding support rod 20 is installed on the side of the locking device 5, and forms a sliding pair with the guide rail on the inner wall of the housing 12, and the positioning key 7 is installed on the outer surface of the housing 12, and Cooperating with the positioning groove 15 of the installation base, the guide rope device 11 is symmetrically installed on both sides of the housing 12 , and the positioning indicator line 6 is painted on the outside of the housing.

Locking device 5 is made of locking handle 501, slide block 502, connecting rod 503, positioning pin 504, locking sleeve 505, locking core 506, steel ball 507, support block one 508 and support block two 509, and the bottom of locking sleeve There are six tapered holes and two square holes on the upper part. Steel balls are installed in the six tapered holes. The outside of the hole is fixed with a support block and a locking sleeve. Two internally threaded sliders are installed on the two threads of the locking handle respectively. One end of the two connecting rods is hinged with the locking core through a pin shaft, and the other end is connected with the sliding The block is hinged, and a pair of locating pins are welded to the outside of the locking sleeve. When locking, in order to keep the underwater control module and the installation tool paired with each other, use the positioning pin 504 to insert into the gap in the hoisting jack 21 of the underwater control module, and turn the T-shaped locking handle 501. At this time, the slider 502 is locked. Under the action of the reverse thread at both ends of the tight handle 501, it moves to both sides, and one end of the connecting rod 503 moves with the slider 502, prompting the other end to drive the locking core 506 to move upward. Move outwards along the tapered hole until it is stuck in the groove of the underwater control module lifting jack 21. At this time, the installation tool is locked with the underwater control module, and the unlocking is just the opposite of the above process.

The installation base is fixed on the submerged tree, and includes a trumpet-shaped protection barrel at the top, a tapered positioning groove on the side wall of the protection barrel, and a docking plate under the underwater control module installed at the bottom of the protection barrel. That is to say, the SCM installation base is installed on the Christmas tree of the subsea production system, including the protection barrel 14, the positioning groove 15 and the lower docking plate 16, etc., for assisting in the installation and positioning of the SCM.

The locking of the hydraulic cylinder is to enable the hydraulic cylinder to stably support the SCM for a long time during the process of lowering and recovering the SCM during the installation of the tool, so as not to cause the hydraulic cylinder to have "soft legs" due to the gravity of the SCM underwater. Sleeve 17, locking flange 18, fixed handle 19 constitute the mechanism to achieve, through the ROV rotation threaded T-shaped fixed handle 19, stuck in the hole of the locking flange 18 to achieve locking, otherwise unlocked.

Working process of underwater control module installation tool:

(1) The installation tool is docked with the auxiliary installation base on the SCM deck, the hydraulic cylinder 9 moves downward, the locking device 5 of the installation tool is locked with the SCM hoisting socket 21, and the hydraulic cylinder 9 moves upward until the SCM indicator line 22 The two lines are fully aligned with the two lines 6 of the installation tool, manually lock the hydraulic cylinder 9, pull out the power source hydraulic joint 8, insert the guide rope into the guide rope sleeve 11, and connect the guide rope to the installation on the Christmas tree. The base protection barrel 14 is connected, and then the installation tool is slid into the top of the designated tree protection barrel along the guide rope;

(2) The installation tool is in contact with the installation protection barrel 14 on the Christmas tree, and the skirt of the protection barrel 14 captures it, and is automatically aligned under the action of the positioning key 7 and the positioning chute 15;

(3) The installation tool descends slowly until it touches and collides with the bottom of the installation base, and the three sets of hydraulic buffers 10 start to function until the SCM and the installation tool land smoothly;

(4) The ROV inserts the hydraulic joint 8 into the hydraulic device on the top of the installation tool, the hydraulic cylinder 9 is ready to work, the ROV rotates the fixed handle 19, unlocks the hydraulic cylinder 9, the hydraulic system works, the piston rod of the hydraulic cylinder 9 drives the SCM down, and the SCM and the lower pair Dock with the connecting plate 16 until the first SCM indicator line 22 is aligned with the second one of the installation tool indicator line 6, and stop descending;

(5) After the docking is in place, the ROV rotates the locking handle 501 to unlock, the hydraulic cylinder 9 is retracted, the hydraulic joint 8 is pulled out, the installation tool is retracted to the mother ship, the auxiliary tools are withdrawn, and the installation is completed.

Claims (5)

1. a kind of installation tool of subsea control modules, it is characterised in that：Including upper backup pad, annular lower supporting plate, it is arranged on Hydraulic bjuffer between upper backup pad and annular lower supporting plate, the housing connected with annular lower supporting plate lower end, it is arranged on shell The cushion pad of body lower end, the hydraulic cylinder for being arranged on upper backup pad lower surface centre position, the work by locking flange and hydraulic cylinder The locking device of stopper rod end connection, the housing of hydraulic bjuffer is connected with upper backup pad, the piston rod of hydraulic bjuffer is with Supporting plate is hinged, and one end of the cylinder barrel of the hydraulic cylinder is connected with upper support platform, the other end is fixed with fixed cover, the fixation Put and be provided with slidable fixed handle, the through hole coordinated with fixed handle end, the locking are provided with locking flange Device includes the connected lock sleeve in locking flange lower end, set lever, sliding block, connecting rod, alignment pin, locking core, the lock sleeve Bottom, which is provided with six bellmouths, top and is provided with two square holes, each bellmouth, is provided with a steel ball, and set lever is passed through Two square holes and it is connected by two support blocks with lock sleeve, the reverse external screw thread in two ends, institute is provided with the set lever State that sliding block there are two and each sliding block sets and has internal thread, sliding block is equipped with locking hand by internal thread with externally threaded On handle, the connecting rod has two, and one end of each connecting rod is hinged with corresponding sliding block, the other end is hinged with locking the upper end of core, Lock core to be located in lock sleeve, the outer surface of locking core is contacted with steel ball, the outer surface of the lock sleeve is additionally provided with a pair and determined Position pin, is provided with the lifting socket of subsea control modules and the breach of two detent fits and recessed with the cooperation of corresponding steel ball Groove, the upper backup pad upper surface is provided with hanger and two hydraulic joints.

2. a kind of installation tool of subsea control modules according to claim 1, it is characterised in that：Outside the lock sleeve Surface is symmetrically arranged with two sliding supporting bars, and the end of each sliding supporting bar is arranged on the guide rail of shell inner surface setting In.

3. a kind of installation tool of subsea control modules according to claim 1 or 2, it is characterised in that：On the housing The outer surface in portion is symmetrically arranged with a pair of guiding rope slings and a pair of ROV handles, the outer surfaces of bottom are provided with a positioning key, under water Protection cylinder of the upper end in trumpet type is provided with the pedestal to be installed of control module, lower butt plate is located in protection cylinder, protects cylinder On be provided with the locating slot coordinated with positioning key, the outer surface of protection cylinder is also symmetrically arranged with a pair of tethers seat, each tether seat Guide rope is provided between corresponding guiding rope sling.

4. a kind of installation tool of subsea control modules according to claim 1 or 2, it is characterised in that：It is described to control under water The outer surface of molding block is provided with SCM instruction lines, and the housing outer surface is provided with installation tool instruction line, SCM instruction lines with Installation tool instruction line is to be in aligned condition in the course of the work.

5. a kind of installation tool of subsea control modules according to claim 3, it is characterised in that：The underwater control mould The outer surface of block is provided with SCM instruction lines, and the housing outer surface is provided with installation tool instruction line, and SCM instruction lines are with installing Instrument instruction line is to be in aligned condition in the course of the work.