Polar region moon pool CTD collecting and releasing system

Abstract

The invention relates to a polar region moon pool CTD retracting and releasing system which is used for hooking or releasing a CTD on a moon pool main deck and a ship bottom and lifting and transferring the CTD in a moon pool, and a CTD lifting winch is arranged on a working platform and used for lifting a CTD water sampler and a tackle to lift; the CTD umbilical cable winch is arranged on one side of the CTD lifting winch and used for winding and unwinding an umbilical cable. The CTD track is arranged on the side wall of a starboard of a moon pool, the tackle is arranged on the CTD track, the CTD track is connected with the tackle through the telescopic track, the tackle is lifted and lowered through stretching and retracting of the CTD track, and the retracting and releasing functions of the CTD are achieved. By means of the CTD collecting and releasing system, laying and recovering operation of the polar region moon pool CTD can be completed, and the tackle and the CTD water sampler are rigidly connected through the locking mechanism, so that it can be guaranteed that the CTD water sampler works stably in the collecting and releasing process; the arranged limiting bracket can effectively guarantee the working safety; the turnover oil cylinder on the tackle effectively reduces the storage space of the tackle in a storage state.

Description

Technical Field

[0001] The invention relates to a retracting and releasing system of a CTD water sampler, in particular to a polar region moon pool CTD retracting and releasing system. Background Art

[0002] The CTD water sampler is an important device for physical ocean observation. It collects seawater temperature, salinity, depth parameters, and can also collect seawater samples at different depths. Water measurements are required before deep-sea ocean expeditions. With the continuous deepening of polar ocean development, in order to meet the needs of physical ocean observation, a polar moon pool CTD collection and release system needs to be designed to complete the deployment and recovery of CTD water samplers.

[0003] The CTD collection and deployment system currently in widespread use is a CTD water sampler based on a ship-borne winch and cable. For example, the public patent CN109115559 improves the water sampling actuator, autonomous control system, and overall design of the water sampling system. For example, the public patent CN115676649 adopts a swinging type to prevent the impact of the CTD and the CTD docking assembly, and eliminates the effects of CTD rolling and swinging and wave movement caused by waves during the deployment and recovery of the CTD to the minimum controllable range. When designing a CTD collection and deployment system, it is inevitable to consider safety, stability, and operability during operation. Summary of the invention

[0004] In order to solve the above technical problems, the present invention proposes a polar moon pool CTD collection and deployment system, through which the deployment and recovery operations of the polar moon pool CTD can be completed. The pulley and the CTD water sampler are rigidly connected through a locking mechanism to ensure that the CTD water sampler works smoothly during collection and deployment; the configured limit bracket can effectively ensure the safety of the work; the flip cylinder on the pulley effectively reduces the storage space of the pulley in the storage state.

[0005] To achieve the above-mentioned purpose, the technical scheme of the present invention is: a polar moonpool CTD collection and release system, which is used to hang or release the CTD on the main deck and bottom of the moonpool and lift and transport it in the moonpool, including 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 lift 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 moonpool, and the pulley is arranged on the CTD track. The CTD track is connected to the pulley through a telescopic track, and the pulley is lifted and lowered by the extension and retraction of the CTD track to realize the collection and release function of the CTD.

[0006] Furthermore, the working platform is placed on two H-shaped beams on the top of the moon pool cabin and connected by bolts. The working platform is welded from H-shaped steel into a frame structure; grid platforms are arranged inside and around the working platform for operation and maintenance.

[0007] Furthermore, 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.

[0008] Furthermore, 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.

[0009] Furthermore, 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 moon pool, and the telescopic track is arranged outside the upper fixed track. The telescopic track with guide wheels 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 load-bearing capacity.

[0010] Furthermore, 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 installed on the sides of the frame, and a guide pulley for a lifting cable is installed on the top. A paired joint is provided in the middle of the pulley frame for docking of CTDs. The wheels are divided into guide wheels and traveling wheels. The guide wheels are arranged on one side of the track for guiding and bearing in the direction of the ship's length, and the traveling wheels are arranged on both sides of the track for guiding and bearing in the direction of the ship's width.

[0011] Furthermore, 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.

[0012] Furthermore, 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 extending and retracting, thereby reducing the storage space occupied by the pulley.

[0013] Furthermore, the bracket includes a maintenance bracket and a limit bracket. The maintenance bracket is installed on the bulkhead of the upper deck of the moon pool, and consists of a bracket, a flip cylinder, a bracket and a pin shaft. When the system is working normally, the maintenance bracket is in a retracted state. When maintenance or storage operations are required, the maintenance bracket is flipped out to support the CTD pulley.

[0014] Furthermore, 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.

[0015] The beneficial effects brought by the technical solution of the present invention are as follows:

[0016] 1) Through the telescopic function of the CTD track in the polar moon pool CTD retracting and releasing system, the lowering pulley can be lifted to realize the retracting and releasing function of the CTD.

[0017] 2) The pulley is connected to the CTD through a locking mechanism and a damper. The lower part of the damper is a buffer ring that can reduce the impact of the docking between the CTD and the pulley. The rigid connection between the pulley and the CTD can also effectively stop the swing and ensure the stability of the CTD retraction and extension work.

[0018] 3) The pulley is equipped with a tilting cylinder, which can change the working state and storage state of the pulley by extending and retracting the tilting cylinder, effectively reducing the space occupied by the pulley in the storage state and facilitating storage.

[0019] 4) The configured limit bracket can ensure the safety of the retracting and releasing operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the polar moon pool CTD retraction and deployment system;

[0021] Figure 2 This is a schematic diagram of the winch layout of the polar moon pool CTD retracting and launching system;

[0022] Figure 3 This is a schematic diagram of the track layout structure of the polar moon pool CTD retraction and deployment system;

[0023] Figure 4 This is the working status diagram of the pulley of the CTD retracting and releasing system in the polar moon pool;

[0024] Figure 5 This is a schematic diagram of the deployment of the polar moon pool CTD collection and deployment system. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0026] like Figures 1 to 5As shown, a polar moonpool CTD collection and deployment system of the present invention is used to hang or release the CTD on the main deck of the moonpool and the bottom of the ship and to lift and transport it in the moonpool. The CTD armored cable is connected to the submersible through a guide wheel. It is 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.

[0027] The working platform 1 is the main load-bearing structure, which is mainly composed of H-shaped steel welded into a frame structure. The working platform 1 is placed on the two H-shaped beams on the top of the moon pool cabin and connected by bolts. The CTD lifting winch 2 is arranged on the working platform 1 to lift the CTD water sampler and the pulley. The CTD umbilical cable winch 3 is arranged on the side of the CTD lifting winch 2 to retract and release the umbilical cable. The CTD track 4 is arranged on the starboard side wall of the moon pool. The CTD track 4 is designed with H-shaped steel. The fixed track is divided into upper and lower sections. The upper fixed track is arranged above the main deck, and the lower fixed track is arranged inside the moon pool. The fixed track cannot be arranged in the middle due to the moon pool hatch cover. The pulley is arranged on the CTD track 4, and the pulley frame is welded into a frame structure by hollow square steel. The bracket includes a maintenance bracket and a limit bracket. The maintenance bracket is installed on the bulkhead of the upper deck of the moon pool, and the limit bracket is installed at the bottom of the moon pool. It is mainly used to limit the extreme position of the pulley and provide fixed support for the bracket.

[0028] The working platform 1 is the main load-bearing structure, which is mainly composed of H-shaped steel welded into a frame structure. The platform is placed on two H-shaped beams on the top of the moon pool cabin and connected by bolts. CTD hoisting winch 2, CTD umbilical cable winch 3, etc. are arranged on the working platform 1. Grid platforms are arranged inside and around the working platform 1 for operation and maintenance.

[0029] The CTD lifting winch 2 is arranged on the working platform 1 to lift the CTD pulley. It is mainly composed of a spiral drum, a frame, a flange shaft, a reducer (with a brake), a hydraulic motor, a lifting cable and accessories, and a force and speed measuring device. The lifting winch is driven by a hydraulic motor. The reducer adopts an internal shell-rotating design and has a normally closed brake. The brake is hydraulically controlled. When the cable is retracted or released, the hydraulic oil enters the brake to open the brake, and the hydraulic motor drives the cylinder to rotate through the reducer. The winch stops under any conditions, and the normally closed brake ensures the cylinder braking to keep the CTD in the stopped position.

[0030] The CTD umbilical cable winch 3 is arranged on one side of the lifting winch for retracting and releasing the umbilical cable. It mainly consists 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 uses the same rope groove parameters as the lifting winch to ensure synchronous retraction and release with the lifting winch. The umbilical cable adopts a special design, and the inner core can transmit both power and control signals. The electric slip ring is arranged at one end of the drum, with the outer ring connected to the drum and the inner ring connected to the frame.

[0031] The CTD track 4 is arranged on the starboard side wall of the moon pool, and is mainly composed of an upper fixed track 4.1, a lower fixed track 4.2, wheels 4.3, a telescopic track 4.4, and a telescopic cylinder 4.5. The track is designed with H-shaped steel, and the fixed track is divided into two sections, the upper fixed track 4.1 is arranged above the main deck, and the lower fixed track 4.2 is arranged inside the moon pool. The fixed track cannot be arranged in the middle due to the moon pool hatch. The telescopic track 4.4 is mainly arranged on the outside of the upper fixed track 4.1, and the track belt guide wheel can be raised and lowered in the fixed track 4.1 groove under the action of the telescopic cylinder 4.5. The lower end of the telescopic track 4.4 and the upper end of the lower fixed track 4.1 adopt a docking groove structure to ensure the track docking accuracy and load-bearing capacity.

[0032] The pulley is arranged on the CTD track, and mainly consists of a pulley frame 5.1, a wheel 5.2, a guide pulley 5.3, a locking mechanism 5.4, a damper 5.5, and a tilting cylinder 5.6. The pulley frame 5.1 is welded from hollow square steel into a frame structure. The pulley frame 5.1 is equipped with wheels 5.2 on the side, and a guide pulley 5.3 for lifting cables on the top. A pair of joints is provided in the middle of the pulley frame 5.1 for docking of CTD. The wheel 5.2 is divided into a guide wheel and a running wheel. The guide wheel is arranged on one side of the track for guiding and carrying in the direction of the ship length, and the running wheels are arranged on both sides of the track for guiding and carrying in the direction of the ship width. The docking joint is mainly composed of a damper and a locking mechanism. The damper adopts a spring type, and there is a guide cylinder 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. The locking mechanism is used to realize the locking and release of the CTD water sampler. The extension and retraction of the tilting oil cylinder 5.6 is used to change the working state and the storage state of the pulley, thereby reducing the storage space occupied by the pulley.

[0033] The bracket includes a maintenance bracket 6.1 and a limit bracket 6.2. The maintenance bracket 6.1 is installed on the bulkhead of the upper deck of the moon pool, and is mainly composed of a bracket, a flip cylinder, a bracket and a pin. When the system is working normally, the maintenance bracket 6.2 is in a retracted state. When maintenance or storage operations are required, the maintenance bracket needs to be flipped out to support the CTD pulley. A limit switch is provided at the working position of the bracket for safety interlocking and status indication. The limit bracket 6.2 is installed at the bottom of the moon pool, mainly used to limit the extreme position of the CTD pulley and provide fixed support for the bracket.

[0034] Key technical points of the present invention:

[0035] 1. As the moon pool hatch cannot be equipped with fixed tracks, the CTD tracks in the polar moon pool CTD retracting and launching system are in a telescopic form to avoid the moon pool hatch. The tracks are designed with H-shaped steel, and the fixed tracks are divided into two sections, the upper fixed track is arranged above the main deck, and the lower fixed track is arranged inside the moon pool. The fixed track cannot be arranged in the middle due to the moon pool hatch. The fixed track is composed of two H-shaped steels, and a connecting frame is arranged in the middle to install one end of the telescopic cylinder. The mobile track adopts a frame design, and the two H-shaped steels are connected by square tubes. The other end of the telescopic cylinder is installed on the housing tube. The telescopic track with guide wheels can be lifted up and down in the fixed track groove under the action of the telescopic cylinder. The lower end of the mobile track and the upper end of the lower fixed track adopt a two-way docking groove design to ensure the track docking accuracy and load-bearing capacity.

[0036] 2. The CTD maintenance bracket is arranged on the upper part of the moon pool bulkhead, and the CTD limit bracket is arranged on the lower part of the moon pool bulkhead. There are buffer brackets at both ends of the CTD pulley. The CTD maintenance bracket consists of a support, a swing cylinder, and a swing bracket. The support is connected to the hull bulkhead, and the swing bracket swings in or out at the left and right bottom of the swing cylinder. When the swing 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 swing bracket swings out, the CTD maintenance bracket works, and the buffer bracket on the CTD pulley is placed on the bracket, and the CTD water sampler can be maintained. The limit bracket at the lower part of the moon pool bulkhead is a T-shaped structure. When the CTD pulley moves to the upper part of the limit bracket, the buffer bracket on the pulley contacts the limit bracket, and the CTD pulley moves to the lower limit position of the track. When it continues to be lowered, the CTD water sampler will be separated from the CTD pulley.

[0037] 3. The CTD pulley adopts a foldable frame design. The folding and extension of the CTD pulley is achieved by the flip cylinder between the pulley frame and the guide frame. When the flip cylinder is extended, the CTD pulley is in the storage state. When the flip cylinder is retracted, the CTD pulley is in the working state. Four guide rollers and a cable guide frame are arranged on the upper part of the pulley, which are mainly used for guiding the CTD armored cable. Two sets of guide wheels are arranged on the pulley, one set for horizontal longitudinal guidance and the other set for horizontal lateral guidance. The guide and buffer mechanism is arranged at the lower part of the pulley frame, which is mainly used for docking and anti-swaying with the CTD water sampler. The pulley guide wheels roll on the track.

[0038] 4. The working platform is arranged on the two supporting beams on the top of the moon pool cabin. The working platform is a frame structure. The CTD hoisting winch and CTD umbilical cable winch are arranged on the platform. The platform frame adopts a hollow structure at the winch cable outlet. The CTD hoisting winch adopts a connected spiral drum design, and a transmission gear is arranged on one side of the drum. The CTD umbilical cable winch is arranged on one side of the CTD hoisting winch. The pitch diameter of the umbilical cable winch drum is consistent with that of the CTD hoisting winch drum, and a transmission gear pair with the same parameters is also arranged on the drum. When the CTD hoisting winch rotates, the CTD umbilical cable winch moves in the same direction driven by the synchronous gear pair. Since the parameters of the drum and the synchronous gear are the same, the cable speed and release length of the CTD hoisting winch and the CTD umbilical cable winch are the same.

Claims

1. A polar moon pool CTD collection and deployment system, used to hook or unhook the CTD on the moon pool main deck and the bottom of the ship and to lift and transport the CTD in the moon pool, characterized by: It includes 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 lift the pulley; the CTD umbilical cable winch is arranged on one side of the CTD lifting winch to retract 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 extension and retraction of the CTD track to realize the retracting and releasing function of the CTD.

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

3. The polar moon pool CTD retracting and deploying system according to claim 1, characterized in that: CTD hoisting winch is composed of spiral drum, frame, flange shaft, reducer, hydraulic motor, hoisting cable and accessories, force and speed measuring devices. CTD hoisting winch is driven by hydraulic motor. The reducer adopts built-in shell-rotor structure and has normally closed brake. The brake is hydraulically controlled.

4. The polar moon pool CTD retracting and deploying system according to claim 1, characterized in that: The CTD umbilical cable winch consists 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 uses 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, with the outer ring connected to the drum and the inner ring connected to the frame.

5. The polar moon pool CTD retracting and deploying system according to claim 1, 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 moon pool, and the telescopic track is arranged outside the upper fixed track. The telescopic track with guide wheels 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 load-bearing capacity.

6. The polar moon pool CTD retracting and deploying system according to claim 1, 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 installed on the sides of the frame, and a guide pulley for lifting cables is installed on the top. Paired joints are provided in the middle of the pulley frame for docking of 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 bearing in the direction of the ship's length, and the running wheels are arranged on both sides of the track for guiding and bearing in the direction of the ship's width.

7. The polar moon pool CTD retracting and deploying system according to claim 6, characterized in that: The butt joint is composed of a damper and a locking mechanism; the damper adopts a spring type, and a guide cylinder is arranged 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 deploying system according to claim 6, 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 extending and retracting, thereby reducing the storage space occupied by the pulley.

9. The polar moon pool CTD retracting and deploying system according to claim 1, 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 moon pool and consists 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. 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 deploying system according to claim 9, characterized in that: The working position of the bracket is equipped with a limit switch 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.

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