CN119461126A

CN119461126A - A polar moon pool CTD retracting and deploying system

Info

Publication number: CN119461126A
Application number: CN202411688304.1A
Authority: CN
Inventors: 丁鑫; 徐江; 季建刚; 谢松莲; 张晨鸣
Original assignee: 704th Research Institute of CSIC
Current assignee: 704th Research Institute of CSIC
Priority date: 2024-11-25
Filing date: 2024-11-25
Publication date: 2025-02-18

Abstract

The invention relates to a polar region moon pool CTD collecting and releasing system which is used for hanging or releasing CTD on a moon pool main deck and a ship bottom and lifting and transferring the CTD in the moon pool, wherein a CTD lifting winch is arranged on a working platform and used for lifting a CTD water sampler and a pulley, a CTD umbilical cable winch is arranged on one side of the CTD lifting winch and used for collecting and releasing umbilical cables, a CTD track is arranged on a starboard side wall of the moon pool, the pulley is arranged on the CTD track, the CTD track is connected with the pulley through a telescopic track, and the CTD is lifted and released through telescopic of the CTD track, so that a collecting and releasing function of the CTD is realized. The CTD retraction system can complete the deployment and retraction operation of the CTD of the polar moon pool, the trolley is rigidly connected with the CTD water sampler through the locking mechanism, the CTD water sampler can work stably when retracted and extended, the configured limiting bracket can effectively ensure the safety of work, and the overturning oil cylinder on the trolley effectively reduces the storage space of the trolley in a storage state.

Description

Polar region moon pool CTD receiving and releasing system

Technical Field

The invention relates to a retraction system of a CTD water sampler, in particular to a retraction system of a polar moon pool CTD.

Background

The CTD water sampler is an important device for physical ocean observation, and is used for collecting parameters of seawater temperature, salinity and depth and collecting seawater samples with different depths. The water body measurement is required before the deep sea marine engineering examination, and as the regional ocean development is continued deeply, in order to meet the requirements of physical ocean observation, a regional moon pool CTD collecting and releasing system is required to be designed to finish the work of distributing and recovering CTD water collectors.

The CTD collecting and releasing system widely used at present is a CTD water sampler based on shipborne winch and cable, such as the improvement of overall design of water collecting actuator, autonomous control system and water collecting system in the publication CN109115559, such as the adoption of swinging type to prevent impact of CTD and CTD butt joint assembly in the publication CN115676649, and the influence of rolling, swinging, wave-following movement and the like of CTD caused by wave in the process of distributing and recovering CTD is eliminated to the minimum controllable range. When designing a CTD retraction system, the safety, stability and operability during operation are inevitably considered.

Disclosure of Invention

In order to solve the technical problems, the invention provides a polar region moon pool CTD collecting and releasing system, through which the collecting and releasing operation of the polar region moon pool CTD can be completed, the trolley is rigidly connected with a CTD water sampler through a locking mechanism, so that the stable work of the CTD water sampler during collecting and releasing can be ensured, the configured limiting bracket can effectively ensure the safety of work, and the storage space of the trolley in a storage state is effectively reduced by the overturning oil cylinder on the trolley.

The technical scheme is that the polar region moon pool CTD collecting and releasing system is used for hanging or releasing CTD on a moon pool main deck and a ship bottom and lifting and transferring the CTD in the moon pool, and comprises a working platform, a CTD lifting winch, a CTD track, a pulley and a bracket, wherein the CTD lifting winch is arranged on the working platform and used for lifting a CTD water sampler and lifting the pulley, the CTD umbilical winch is arranged on one side of the CTD lifting winch and used for collecting and releasing umbilical ropes, the CTD track is arranged on a starboard side wall of the moon pool, the pulley is arranged on the CTD track, the CTD track is connected with the pulley through a telescopic track, and the CTD is lifted and released through telescopic of the CTD track, so that a collecting and releasing function of the CTD is realized.

Furthermore, the working platform is placed on two H-shaped cross beams at the top of the moon pool cabin and is connected through bolts, the working platform is welded into a frame structure by H-shaped steel, and grid platforms are arranged in the working platform and around the working platform for operation and maintenance.

Further, the CTD lifting winch consists of a spiral winding drum, a frame, a flange shaft, a speed reducer, a hydraulic motor, a lifting cable, an accessory, a force measuring device and a speed measuring device, the CTD lifting winch is driven by the hydraulic motor, the speed reducer adopts a built-in shell-rotor structure and is provided with a normally closed brake, and the brake is controlled hydraulically.

The CTD umbilical cable winch is composed of a winding drum, a frame, a flange shaft, an umbilical cable and an electric slip ring, the cable winding drum shares power of the lifting winch through a gear pair, the winding drum adopts rope groove parameters identical to those of the lifting winch, synchronous winding and unwinding of the cable winding drum and the lifting winch are guaranteed, an inner core adopted by the umbilical cable can transmit power and control signals, the electric slip ring is arranged at one end of the winding drum, an outer ring is connected with the winding drum, and an inner ring is connected with the frame.

Further, the CTD track comprises last fixed track, lower fixed track, wheel, flexible track, flexible hydro-cylinder, goes up fixed track and arranges above the main deck, and lower fixed track arranges inside the moon pool, and flexible track arranges in last fixed track outside, and flexible track takes the leading wheel to go up and down in the fixed track inslot under flexible hydro-cylinder's effect, and flexible track lower extreme and lower fixed track upper end adopt the butt joint groove structure, guarantee track butt joint precision and bearing capacity.

The trolley is composed of a trolley frame, wheels, guide pulleys, a locking mechanism, a damper and a turnover oil cylinder, wherein the trolley frame is welded into a frame structure by hollow square steel, the wheels are arranged on the side face of the trolley frame, the guide pulleys of a lifting cable are arranged at the top of the trolley frame, a pair of connectors are arranged in the middle of the trolley frame and used for butt joint of CTDs, the wheels are divided into guide wheels and travelling wheels, the guide wheels are arranged on one side of a track and used for guiding and bearing in the ship length direction, and the travelling wheels are arranged on two sides of the track and used for guiding and bearing in the ship width direction.

The butt joint consists of a damper and a locking mechanism, wherein the damper is in a spring type, a guide cylinder is arranged in the middle of the spring and used for telescopic guide, a buffer ring is arranged at the lower part of the damper, and a rubber buffer pad is arranged at the bottom of the buffer ring.

Furthermore, the locking mechanism is used for locking and unlocking the CTD water sampler, and the working state and the storage state of the pulley are changed through the telescopic action of the overturning oil cylinder, so that the storage space occupied by the pulley is reduced.

The maintenance bracket is arranged on the cabin wall of the deck at the upper part of the moon pool and consists of a bracket, a turnover oil cylinder, a bracket and a pin shaft, and is in a retracted state when the system works normally, and is turned out to support the CTD pulley when maintenance or storage work is needed.

Furthermore, the bracket working position is provided with a limiting light for safety interlocking and state indication, and the limiting bracket is arranged at the bottom of the moon pool and used for limiting the limit position of the CTD pulley and providing fixed support for the bracket.

The technical scheme of the invention has the following beneficial effects:

1) By means of the telescopic function of the CTD track in the polar region moon pool CTD retraction system, the retraction pulley can be lifted, and the retraction function of the CTD is achieved.

2) The pulley is connected with the CTD through the locking mechanism and the damper, the buffer ring is arranged at the lower part of the damper, so that the impact of butt joint of the CTD and the pulley can be reduced, the rigid connection of the pulley and the CTD can also effectively play a role in stopping oscillation, and the stability of the retraction and the extension of the CTD is ensured.

3) The tackle is provided with the overturning oil cylinder, the working state and the storage state of the tackle can be changed through the extension and retraction of the overturning oil cylinder, the occupied space of the tackle in the storage state is effectively reduced, and the tackle is convenient to store.

4) The configured limit bracket can ensure the safety of the retraction operation.

Drawings

Fig. 1 is a schematic diagram of a polar region moon pool CTD retraction system;

FIG. 2 is a schematic diagram of a winch arrangement of a polar moon pool CTD retraction system;

fig. 3 is a schematic view of a track arrangement structure of a polar region moon pool CTD retraction system;

Fig. 4 is a diagram of the working state of the sled of the polar region moon pool CTD retraction system;

fig. 5 is a schematic view of the deployment operation of the polar moon pool CTD retraction system.

Detailed Description

The invention will be further described with reference to the drawings and examples.

As shown in fig. 1 to 5, the polar moon pool CTD retraction system of the present invention is used for hooking or unhooking CTDs on a moon pool main deck and a ship bottom and lifting and transferring in the moon pool, and CTD armoured cables are connected to a submersible through guide wheels, and mainly composed of a working platform 1, a CTD lifting winch 2, a CTD umbilical cable winch 3, a CTD track 4, a pulley and a bracket.

The working platform 1 is a main bearing structure, and mainly comprises H-shaped steel welded into a frame structure. The working platform 1 is placed on two H-shaped cross beams at the top of the moon pool cabin and connected through bolts. A CTD lifting winch 2 is arranged on the working platform 1 for lifting the CTD water sampler and sled. The CTD umbilical winch 3 is arranged at one side of the CTD hoisting winch 2 for reeling and unreeling the umbilical cable. The CTD track 4 is arranged on the starboard side wall of the moon pool, the CTD track 4 is designed by adopting H-shaped steel, the fixed track is divided into an upper section and a lower section, the upper fixed track is arranged above the main deck, the lower fixed track is arranged inside the moon pool, and the middle part cannot be provided with the fixed track due to the cabin cover of the moon pool. The trolley is arranged on the CTD track 4, and the frame of the trolley is welded into a frame structure by hollow square steel. The bracket comprises a maintenance bracket and a limiting bracket, wherein the maintenance bracket is arranged on the cabin wall of the deck at the upper part of the moon pool, the limiting bracket is arranged at the bottom of the moon pool and is mainly used for limiting the limiting position of the pulley and providing fixed support for the bracket.

The working platform 1 is a main bearing structure, and mainly comprises H-shaped steel welded into a frame structure. The platform is placed on two H-shaped cross beams at the top of the moon pool cabin and connected through bolts. The working platform 1 is provided with a CTD lifting winch 2, a CTD umbilical cable winch 3 and the like, and the interior and the periphery of the working platform 1 are provided with grid platforms for operation and maintenance.

The CTD lifting winch 2 is arranged on the working platform 1 and used for lifting the CTD pulley, and mainly comprises a spiral winding drum, a frame, a flange shaft, a speed reducer (with a brake), a hydraulic motor, a lifting cable and accessories, and a force measuring and speed measuring device. The lifting winch is driven by a hydraulic motor, the speed reducer is designed by adopting a concealed shell rotor and is provided with a normally closed brake, and the brake is controlled by adopting hydraulic pressure. When the cable is wound and unwound, hydraulic oil enters the brake to open the brake, and the hydraulic motor drives the cylinder to rotate through the speed reducer. The winch is stopped under any condition and the normally closed brake ensures the cylinder braking, keeping the CTD in the stopped position.

The CTD umbilical cable winch 3 is arranged at one side of the lifting winch and is used for winding and unwinding an umbilical cable, and mainly comprises a winding drum, a frame, a flange shaft, an umbilical cable and an electric slip ring. The cable drum shares the power of the lifting winch through the gear pair. The winding drum adopts the same rope groove parameters as the hoisting winch, so that synchronous winding and unwinding of the hoisting winch are ensured. The umbilical cable adopts special design, and the inner core can transmit power and control signals. The electric slip ring is arranged at one end of the winding drum, the outer ring is connected with the winding drum, and the inner ring is connected with the frame.

The CTD track 4 is arranged on the starboard side wall of the moon pool and mainly comprises an upper fixed track 4.1, a lower fixed track 4.2, wheels 4.3, a telescopic track 4.4 and a telescopic oil cylinder 4.5. The rails are designed by adopting H-shaped steel, the fixed rails are divided into an upper section and a lower section, the upper fixed rail 4.1 is arranged above the main deck, the lower fixed rail 4.2 is arranged inside the moon pool, and the middle part cannot be provided with the fixed rails due to the cabin cover of the moon pool. The telescopic rail 4.4 is mainly arranged outside the upper fixed rail 4.1, and the rail belt guide wheel can lift up and down in the groove of the fixed rail 4.1 under the action of the telescopic oil cylinder 4.5. The lower end of the telescopic rail 4.4 and the upper end of the lower fixed rail 4.1 adopt a butt joint groove structure, so that the rail butt joint precision and bearing capacity are ensured.

The pulley is arranged on the CTD track and mainly comprises a pulley frame 5.1, wheels 5.2, a guide pulley 5.3, a locking mechanism 5.4, a damper 5.5 and a turnover oil cylinder 5.6. The trolley frame 5.1 is welded into a frame structure from hollow square steel. Wheels 5.2 are arranged on the side face of the trolley frame 5.1, a guide pulley 5.3 of a lifting cable is arranged at the top of the trolley frame, and a pair of connectors are arranged in the middle of the trolley frame 5.1 and used for butt joint of CTDs. The wheels 5.2 are divided into guide wheels and travelling wheels, the guide wheels are arranged on one side of the track for guiding and bearing in the ship length direction, and the travelling wheels are arranged on two sides of the track for guiding and bearing in the ship width direction. The butt joint mainly comprises a damper and a locking mechanism. The damper adopts a spring type, and a guide cylinder is arranged in the middle of the spring and used for telescopic guide. The lower part of the damper is provided with a buffer ring, and the bottom of the buffer ring adopts a rubber buffer cushion. And locking and unlocking the CTD water sampler are realized by adopting a locking mechanism. The extension and retraction of the overturning oil cylinder 5.6 is used for changing the working state and the storage state of the pulley and reducing the storage space occupied by the pulley.

The carriage comprises a maintenance carriage 6.1 and a limit carriage 6.2. The maintenance bracket 6.1 is arranged on the cabin wall of the upper deck of the moon pool and mainly comprises a bracket, a turnover oil cylinder, a bracket and a pin shaft. The maintenance carriage 6.2 is in a retracted state during normal operation of the system, and is required to be flipped out of support with the CTD sled when maintenance or storage operations are required. The bracket working position is provided with a limit switch for safety interlocking and state indication. The limiting bracket 6.2 is arranged at the bottom of the moon pool, is mainly used for limiting the limit position of the CTD pulley and provides fixed support for the bracket.

The key points of the technology of the invention are as follows:

1. Since the moon pool cover cannot arrange the fixed track, the CTD track in the polar region moon pool CTD retraction system takes a telescopic form so as to avoid the moon pool cover. The rails are designed by adopting H-shaped steel, the fixed rails are divided into an upper section and a lower section, the upper fixed rails are arranged above the main deck, the lower fixed rails are arranged inside the moon pool, and the middle part cannot be provided with the fixed rails due to the cabin cover of the moon pool. The fixed track comprises two H-shaped steel, the middle arrangement link is used for installing flexible hydro-cylinder one end, and the removal track adopts frame design, adopts the side pipe to connect between two H-shaped steel, installs flexible hydro-cylinder other end on the room pipe, and flexible track area leading wheel can be at fixed track inslot oscilaltion under flexible hydro-cylinder's effect. The lower end of the movable track and the upper end of the lower fixed track adopt a bidirectional butt joint groove design, so that the butt joint precision and bearing capacity of the track are ensured.

2. The upper part of the moon pool bulkhead is provided with a CTD maintenance bracket, the lower part of the moon pool bulkhead is provided with a CTD limit bracket, and two ends of the CTD pulley are provided with buffer brackets. The CTD maintenance bracket consists of a support, a swing cylinder and a swing bracket. The support is connected with the bulkhead of the ship body, and the swing bracket swings in or out from the left and right of the swing cylinder. When the swinging bracket swings in, the CTD maintenance bracket does not work, the buffer bracket on the CTD pulley does not interfere with the maintenance bracket, and the CTD pulley slides up and down normally. When the swinging bracket swings out, the CTD maintenance bracket works, and the buffer bracket on the CTD pulley is placed on the bracket, so that the CTD water sampler can be maintained. The spacing bracket of moon pool bulkhead lower part is T type structure, and when the CTD coaster moved spacing bracket upper portion, the buffer bracket on the coaster contacted with spacing bracket, and CTD coaster moved track lower extreme position, CTD water sampler can separate with the CTD coaster when continuing to drop.

And 3, the CTD pulley is designed by adopting a foldable frame, and the CTD pulley is folded and stretched out between the pulley frame and the guide frame through a turnover oil cylinder. When the overturning oil cylinder stretches out, the CTD pulley is in a storage state, and when the overturning oil cylinder retracts, the CTD pulley is in a working state. Four guide rollers and a cable guiding frame are arranged at the upper part of the pulley, and are mainly used for guiding the CTD armored cable, two groups of guide wheels are arranged on the pulley, one group is used for horizontal and longitudinal guiding, and the other group is used for horizontal and transverse guiding. The lower part of the trolley frame is provided with a guide connection and buffer mechanism which is mainly used for butting and stopping swinging with the CTD water sampler. The pulley guide wheels roll on the rails.

4. The working platform is arranged on two supporting beams at the top of the moon pool cabin, the working platform is of a frame structure, the CTD lifting winch and the CTD umbilical cable winch are arranged on the platform, and the platform frame adopts a hollow structure at the cable outlet of the winch. The CTD lifting winch adopts a spiral winding drum design, and a transmission gear is arranged on one side of the winding drum. The CTD umbilical cable winch is arranged at one side of the CTD lifting winch, the pitch diameter of the umbilical cable winch drum is consistent with that of the CTD lifting winch drum, and transmission gear pairs with the same parameters are also arranged on the drum. When the CTD lifting winch rotates, the CTD umbilical cable winch is driven by the synchronous gear pair to move in the same direction, and the cable speed and the paying-out length of the CTD lifting winch and the CTD umbilical cable winch are the same as each other due to the fact that the parameters of the winding drum and the synchronous gear are the same.

Claims

1. A polar moon pool CTD collection and release system, used for hanging or releasing the CTD on the main deck and bottom of the moon pool and lifting and transporting it in the moon pool, characterized by comprising a working platform, a CTD lifting winch, a CTD umbilical cable winch, a CTD track, a pulley, and a bracket. The CTD lifting winch is arranged on the working platform to lift the CTD water sampler and the pulley; the CTD umbilical cable winch is arranged on one side of the CTD lifting winch to collect and release the umbilical cable; the CTD track is arranged on the starboard side wall of the moon pool, and the pulley is arranged on the CTD track. The CTD track 4 is connected to the pulley through a telescopic track, and the pulley is lifted and lowered by the telescopic movement of the CTD track to realize the collection and release function of the CTD.

2. The polar moonpool CTD launching and retracting system according to claim 1 is characterized in that: the working platform is placed on two H-shaped beams on the top of the moonpool cabin and connected by bolts, and the working platform is welded into a frame structure by H-shaped steel; and grid platforms are arranged inside and around the working platform for operation and maintenance.

3. The polar moon pool CTD retracting and launching system according to claim 1 is characterized in that the CTD hoisting winch is composed of a spiral drum, a frame, a flange shaft, a reducer, a hydraulic motor, a hoisting cable and accessories, and a force and speed measuring device. The CTD hoisting winch is driven by a hydraulic motor, and the reducer adopts an internal shell-rotating structure with a normally closed brake, and the brake is hydraulically controlled.

4. The polar moon pool CTD retracting and releasing system according to claim 1 is characterized in that: the CTD umbilical cable winch is composed of a drum, a frame, a flange shaft, an umbilical cable, and an electric slip ring; the cable drum shares the power of the lifting winch through a gear pair; the drum adopts the same rope groove parameters as the lifting winch to ensure synchronous retraction and release with the lifting winch; the inner core of the umbilical cable can transmit both power and control signals; the electric slip ring is arranged at one end of the drum, the outer ring is connected to the drum, and the inner ring is connected to the frame.

5. The polar moonpool CTD collection and deployment system according to claim 1 is characterized in that: the CTD track consists of an upper fixed track, a lower fixed track, wheels, a telescopic track, and a telescopic cylinder. The upper fixed track is arranged above the main deck, the lower fixed track is arranged inside the moonpool, and the telescopic track is arranged outside the upper fixed track. The guide wheels of the telescopic track can be raised and lowered in the fixed track groove under the action of the telescopic cylinder. The lower end of the telescopic track and the upper end of the lower fixed track adopt a docking groove structure to ensure the track docking accuracy and bearing capacity.

6. The polar moon pool CTD collection and release system according to claim 1 is characterized in that the pulley is composed of a pulley frame, wheels, guide pulleys, locking mechanisms, dampers, and tilting cylinders; the pulley frame is welded from hollow square steel into a frame structure; wheels are mounted on the sides of the frame, a guide pulley for a lifting cable is mounted on the top, and paired joints are provided in the middle of the pulley frame for docking the CTD; the wheels are divided into guide wheels and running wheels; the guide wheels are arranged on one side of the track for guiding and carrying in the direction of the ship's length, and the running wheels are arranged on both sides of the track for guiding and carrying in the direction of the ship's width.

7. The polar moon pool CTD retracting and launching system according to claim 6 is characterized in that: the docking joint is composed of a damper and a locking mechanism; the damper adopts a spring type, and a guide cylinder is provided in the middle of the spring for telescopic guidance; the lower part of the damper is a buffer ring, and the bottom of the buffer ring adopts a rubber buffer pad.

8. The polar moon pool CTD retracting and releasing system according to claim 6 is characterized in that: the locking mechanism is used to achieve the locking and releasing of the CTD water sampler; the turning cylinder changes the working state and storage state of the pulley by telescoping, thereby reducing the storage space occupied by the pulley.

9. The polar moonpool CTD retracting and releasing system according to claim 1 is characterized in that the bracket includes a maintenance bracket and a limit bracket, the maintenance bracket is installed on the bulkhead of the upper deck of the moonpool, and is composed of a bracket, a flip cylinder, a bracket and a pin; when the system is working normally, the maintenance bracket is in a retracted state, and when maintenance or storage operations are required, the maintenance bracket is flipped out to support the CTD pulley.

10. The polar moon pool CTD retracting and releasing system according to claim 9 is characterized in that: a limit switch is provided at the working position of the bracket for safety interlocking and status indication; the limit bracket is installed at the bottom of the moon pool to limit the extreme position of the CTD pulley and provide fixed support for the bracket.