CN111516842B

CN111516842B - Ship lateral propeller pipe tunnel watertight device

Info

Publication number: CN111516842B
Application number: CN201910109489.9A
Authority: CN
Inventors: 朱洪波
Original assignee: Shanghai Fuxun Industrial Co ltd
Current assignee: Shanghai Fuxun Industrial Co ltd
Priority date: 2019-02-04
Filing date: 2019-02-04
Publication date: 2022-08-16
Anticipated expiration: 2039-02-04
Also published as: CN111516842A

Abstract

The invention discloses a tube-tunnel watertight device of a ship lateral thruster, which is arranged on a ship with a tube-tunnel type lateral thruster, the watertight device comprises a watertight door, an opening and closing actuating mechanism, a power station and a control system, the watertight door is arranged at the ports at the two sides of the pipe tunnel through hinged connection, the opening and closing actuating mechanism is used for actuating the opening and closing of the watertight door by connecting the pipe tunnel wall and the watertight door, the power station is connected with the start-stop executing mechanism to drive the start-stop executing mechanism, the control system controls the start and stop of the power station and receives, transmits and processes signals, the watertight door can be fixed on the end surface of the pipe tunnel through the opening and closing actuating mechanism and is combined with the end surface of the pipe tunnel in a watertight way, the pipe tunnel bottom is equipped with drainage system, drainage system links to each other with control system, pipe tunnel top is equipped with manhole and watertight manhole cover, manhole and watertight manhole cover and side direction propeller cabin intercommunication.

Description

Ship lateral propeller pipe tunnel watertight device

Technical Field

The invention relates to the technical field of ship energy conservation and emission reduction, in particular to a watertight device for a pipe tunnel of a ship lateral thruster.

Background

In the ship navigation technology, in order to reduce the resistance when a ship is directly navigated, the technology of additionally arranging side push pipe tunnel sealing covers at the two ends of a ship side push tunnel can be adopted. However, most ships are still not willing to equip the side push pipe tunnel sealing cover because the existing side push pipe tunnel sealing cover technology is low in cost-efficiency ratio, single in performance, high in failure rate and large in occupied space of an actuating mechanism and cannot be arranged. Meanwhile, in the existing side push tube tunnel sealing cover technology, a grid plate arranged axially is a common technology, such as chinese patent CN201120036732.8, CN 201420449272.5. The grid plate is arranged at the tunnel opening through a power shaft, and the power shaft penetrates through the tunnel wall to enter the cabin and is matched with the power device. And the power shaft is in watertight connection with the tunnel wall. However, a common trouble of this technique is that, this kind of side-push tube tunnel capping technique because most of blades occupy the tube tunnel inner space after opening, and its pivot and connecting rod formula starting and stopping mechanism also all install inside the tube tunnel, therefore can't install the operation in the side-push tube tunnel of the short high-speed ocean transport boats and ships (such as container banning wheel, etc.) of ship bottom section line shape angle great thus cause the tube tunnel. Another kind of puzzlement is, because the automated control system design of current side push pipe tunnel closing cap is advanced inadequately, including the grid plate structure that a plurality of blades are constituteed is complicated, single spare part numerous, and side push pipe tunnel closing cap is the invisible equipment of long-term submergence below the waterline again for the side push pipe tunnel closing cap can't emergent when often taking place equipment trouble in use and get rid of also can't confirm its exact state, leads to whole grid plate system can't the operation and then makes the lateral thruster can't use. Still another kind of puzzlement is, grid tray formula closing cap is the structure that permeates water, can't drain the sea water in the side push pipe tunnel, and maintainer can't get into the side push pipe tunnel when boats and ships are berthhed on water and overhaul the side propeller, consequently if will overhaul the side propeller then still need make boats and ships shut down and go into dry dock, has caused the loss of operation and has paid the dry dock expense of large amount in addition from this. The other common trouble is that the side push pipe tunnel sealing cover in the form of the grid plate is still permeable, the flowing impact of seawater in the grid plate gap still causes certain resistance to the ship when the ship sails, and the energy-saving and emission-reducing effects of the side push pipe tunnel sealing cover are not optimal. Another common problem associated with this is that although watertight connections are used between the power shaft of the grid-type cover and the tunnel wall, the power shaft still remains in motion as a rotating shaft seal (i.e., shaft seal), and when the seal fails, seawater may still leak into the ship's cabin, which may cause the risk of cabin water ingress. In addition, the following structure of the waterline of the ship often breeds the attached marine organisms (including algae and shellfish), and the pervious grid plate type side push pipe tunnel sealing cover runs by adopting a rotating shaft pushing mode with smaller torsion, and the rotating shafts are numerous, so that after the marine organisms are bred at the inner side, the outer side, the rotating shafts and other parts of the grid plate, the rotating shafts are often blocked due to the smaller torsion, and the serious problem that the blades of the pipe tunnel sealing cover cannot be opened/closed or cannot be completely opened/closed is caused.

There is also a form of watertight cover which has not been put into practical use at present, for example, in the Chinese patent201621458486.4The plate grid type cover plate has the advantages that part of troubles of the plate grid type cover plate can be eliminated theoretically, but the plate grid type cover plate needs to be provided with complex opening and closing actuating mechanisms in the side push pipe tunnel, the size of the actuating mechanisms and the required operation space are very large, and the mechanisms cannot be accommodated and operated in the pipe tunnel with the short bottom of an ocean transport ship, so that the feasibility is low, and the plate grid type cover plate has no successful practical application case so far.

Disclosure of Invention

In view of the above-mentioned shortcomings, the present invention provides a watertight device for a side thruster pipe of a ship, which can solve the above-mentioned problems.

In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:

a tube-tunnel watertight device for a lateral thruster of a ship, which is arranged on the ship with a tube-tunnel lateral thruster, the watertight device comprises a watertight door, an opening and closing actuating mechanism, a power station and a control system, the watertight door is arranged at the ports at the two sides of the pipe tunnel through hinged connection, the opening and closing actuating mechanism is used for actuating the opening and closing of the watertight door by connecting the pipe tunnel wall and the watertight door, the power station is connected with the start-stop executing mechanism to drive the start-stop executing mechanism, the control system controls the start and stop of the power station and receives, transmits and processes signals, the watertight door can be fixed on the end surface of the pipe tunnel through the opening and closing actuating mechanism and is combined with the end surface of the pipe tunnel in a watertight way, the side thruster cabin is characterized in that a drainage system is arranged at the bottom of the pipe tunnel and connected with a control system, a watertight access hole and a watertight access hole cover are arranged at the top of the pipe tunnel, and the watertight access hole is communicated with the side thruster cabin.

According to one aspect of the invention, the watertight device comprises locking pins by means of which the stability of the watertight door after closing is achieved.

According to one aspect of the invention, the watertight door is an integral watertight door, the front projection shape of the watertight door can be designed into a circular shape, an oval shape, a polygonal shape or other irregular shapes at will according to the pipe tunnel structure, one side of the watertight door is connected with the port of the side push pipe tunnel through a hinge, and after the watertight door is matched with the side push pipe tunnel when the watertight door is closed, the outer surface of the watertight door is basically consistent with the line shape of the outer plate of the peripheral ship body without obvious concave-convex surfaces.

According to one aspect of the invention, the contact surface of the watertight door and the pipe tunnel port is provided with a sealing ring.

According to one aspect of the invention, the opening and closing actuating mechanism comprises at least one opening and closing power cylinder, one end of the power cylinder is movably connected to the wall of the pipe tunnel, the other end of the power cylinder is movably connected with the watertight door, and the watertight door is opened and closed by extending and retracting a piston rod of the opening and closing power cylinder.

According to one aspect of the invention, the opening and closing actuating mechanism comprises at least one push rod, one end of the push rod is connected to the wall of the pipe tunnel in a sliding mode and is connected with the power station, the other end of the push rod is connected with the watertight door in a rotating mode, and the push rod is pushed by the power station to slide so as to achieve opening and closing of the watertight door.

According to one aspect of the invention, the control system is networked with the lateral thruster and the ship speed control system to realize signal intercommunication and interlocking linkage.

According to one aspect of the invention, the watertight device comprises a number of sensors arranged as required, the control system being connected to all the sensors and collecting and processing all the sensor signals.

According to one aspect of the invention, the watertight manhole and the watertight manhole cover are opened for access by a service person.

According to one aspect of the invention, the power station is provided with an energy storage device.

In accordance with one aspect of the invention, the control system includes an alarm system.

According to one aspect of the invention, the structures of the parts of the opening and closing actuating mechanism, the power station and the control system and/or the connecting lines thereof are designed in a redundant manner.

According to one aspect of the invention, the drainage system comprises a drainage hole and a drainage pump, the drainage pump is connected with the control system, and a filter screen is arranged at the drainage hole.

According to one aspect of the invention, the bottom of the pipe tunnel is provided with a liquid level meter, and the liquid level meter is connected with a control system.

According to one aspect of the invention, the power station is provided with a manual power mechanism which can be operated by manually controlling the opening and closing actuating mechanism.

According to one aspect of the invention, a grid is arranged on the end face of the pipe tunnel; can prevent foreign matters from entering the pipe tunnel.

The implementation of the invention has the advantages that:

1. because its novel compact opens and close actuating mechanism design for this device can be installed and be applied to the extremely narrow and small commercial ocean transport ship of side direction propeller pipe tunnel inner space, has solved the difficult problem that side push closing cap actuating mechanism and side direction propeller emergence space in the past interfered the conflict.

2. The advanced control system can greatly improve the reliability and the monitorability of the underwater operation equipment, and solves the hidden danger that the underwater equipment fails to be solved emergently and cannot be visually monitored.

3. The opening of the side thruster pipe tunnel can be closed, resistance to ship navigation caused by water flow rushing into the side thruster pipe tunnel in the ship navigation process is prevented, the speed is directly increased or remarkable energy-saving and emission-reduction effects are created under the rated speed, tens of millions of fuel charges are saved in the service life of one ship for three decades on average, and emission of pollutants is greatly reduced.

4. It can be after closing the watertight door, the sea water in the pipe tunnel of managing evacuates for the maintainer can directly get into the side direction propeller pipe tunnel of evacuation sea water in the manhole in the cabin, inspects and maintains the side direction propeller, has avoided the state that the side direction propeller must enter dry dock and just can overhaul in the past, has saved huge dry dock expense and the time of stopping a journey for the shipowner, increases boats and ships availability factor, creates cost saving and extra operating value of tens of millions.

5. On the special detection boats and ships that are equipped with bottom of a ship sonar system, can avoid rivers to gush into the pipe tunnel and the bubble that forms and noise to the serious influence of bottom of a ship sonar equipment detection performance.

6. The seawater in the pipe tunnel can be pumped out after the watertight door is closed, the weight of the ship head is reduced, the ship head is lifted, a better navigation state is formed, the navigation speed is further increased, and energy conservation and emission reduction are realized.

7. Be provided with the grid at the pipe tunnel mouth, can prevent that great foreign matter from getting into the pipe tunnel.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of opening a watertight door of a watertight device for a tube tunnel of a lateral thruster of a ship according to the present invention;

FIG. 2 is a schematic view of the watertight door closing of the pipe-tunnel watertight device for the lateral thruster of a ship according to the present invention;

FIG. 3 is a schematic diagram of a hydraulic drive according to an embodiment of the present invention;

fig. 4 is a schematic view illustrating the opening of the watertight door of the watertight device for the tube and tunnel of the lateral thruster of the ship according to the second and third embodiments of the present invention;

fig. 5 is a schematic view of closing watertight doors of watertight devices for pipe tunnels of lateral thrusters of ships according to second and third embodiments of the invention;

FIG. 6 is a diagram of a control system for the watertight device of the tube and tunnel of the lateral thruster of the ship;

FIG. 7 is a schematic cross-sectional view illustrating the watertight door of the watertight device for the tube and tunnel of the lateral thruster of the ship according to the present invention being opened;

FIG. 8 is a schematic sectional view of the closing of the watertight door of the watertight device of the ship side thruster pipe tunnel according to the present invention;

fig. 9 is a schematic cross-sectional view of an opened watertight door of a watertight device for a side thruster pipe tunnel of a ship according to a second embodiment and a third embodiment of the invention;

fig. 10 is a schematic cross-sectional view of a watertight door of a watertight device for a side thruster pipe tunnel of a ship according to second and third embodiments of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

As shown in fig. 1, 2, 3, 6, 7 and 8, a watertight device for a side thruster pipe tunnel of a ship is arranged on a ship with a side thruster 2 and a pipe tunnel 1, the watertight device comprises watertight doors 3, an opening and closing actuator 5, a power station and a control system, the watertight doors are arranged at two side ports of the pipe tunnel through hinged connection, the opening and closing actuator is connected with the pipe tunnel wall and the watertight doors to execute the opening and closing actions of the watertight doors, the power station is connected with the opening and closing actuator to drive the opening and closing actuator, the control system controls the starting and stopping of the power station and the receiving and processing signals, the watertight doors can be fixed on the end surfaces of the pipe tunnel through the opening and closing actuator and are in watertight combination with the end surfaces of the pipe tunnel, a drainage system is arranged at the bottom of the pipe tunnel and connected with the control system, a service hole and a service hole cover 6 are arranged at the top of the pipe tunnel, the watertight man access hole is communicated with the lateral propeller engine room.

In practical application, the watertight device comprises a plurality of locking pins 7, and the locking pins are used for realizing the stability of the watertight door after the watertight door is closed.

In practical application, the watertight door is an integral watertight door, the front projection shape of the watertight door can be designed into a circular shape, an oval shape, a polygonal shape or other irregular shapes at will according to the pipe tunnel structure, one side of the watertight door is connected with the port of the side push pipe tunnel through a hinge, and the outer surface of the watertight door is basically consistent with the line type of the outer plate of the surrounding ship body after the watertight door is matched with the side push pipe tunnel when the watertight door is closed.

In practical application, the sealing ring 4 is arranged on the contact surface of the watertight door and the pipe tunnel port.

In practical application, the opening and closing actuating mechanism comprises at least one opening and closing power cylinder, one end of the power cylinder is movably connected to the wall of the pipe tunnel, the other end of the power cylinder is movably connected with the watertight door, and the watertight door is opened and closed by extending and retracting a piston rod of the opening and closing power cylinder.

In practical application, the control system is networked with the lateral thruster and the ship speed control system to realize signal intercommunication and interlocking linkage.

In practice, the water-tight device comprises a plurality of sensors arranged as required, and the control system is connected with all the sensors and collects all the sensor signals.

In practical application, the pipe tunnel wall is provided with a watertight access hole and a watertight access hole cover 6, and the access hole can be used for access of an access man.

In practical application, the power station is provided with an energy storage device.

In practical applications, the control system comprises an alarm system.

In practical application, the drainage system comprises a drainage hole and a drainage pump, the drainage pump is connected with the control system, and a filter screen is arranged at the drainage hole.

In practical application, a liquid level meter is arranged at the bottom of the pipe tunnel and connected with a control system.

In practical application, the power station is provided with a manual power mechanism, and the power station can be operated by manually controlling the opening and closing actuating mechanism.

Example two

As shown in fig. 3, 4, 5, 6, 9 and 10, a watertight device for a side thruster pipe tunnel of a ship is arranged on a ship with a side thruster 2 and a pipe tunnel 1, the watertight device comprises a watertight door 3, an opening and closing actuator 5, a power station and a control system, the watertight door is arranged at two side ports of the pipe tunnel through hinged connection, the opening and closing actuator is used for executing the opening and closing actions of the watertight door through connecting a pipe tunnel wall and the watertight door, the power station is connected with the opening and closing actuator to drive the opening and closing actuator, the control system is used for controlling the starting and stopping of the power station and receiving, sending and processing signals, the watertight door can be fixed on the end surface of the pipe tunnel through the opening and closing actuator and is in watertight combination with the end surface of the pipe tunnel, a drainage system is arranged at the bottom of the pipe tunnel and is connected with the control system, the pipe tunnel top is equipped with watertight manhole and watertight manhole cover 6, watertight people manhole and side direction propeller cabin intercommunication, be equipped with grid 8 on the pipe tunnel terminal surface, can prevent that the foreign matter from getting into the pipe tunnel.

In practical application, open and close actuating mechanism includes at least one push rod, but push rod one end sliding connection is connected on the pipe tunnel wall and with the power station, and the other end and watertight door rotatable coupling promote the push rod through the power station and slide in order to realize opening and closing of watertight door.

In practical application, be equipped with access hole 6 on the pipe tunnel wall, the access hole can supply the access man to pass in and out.

In practical applications, the control system comprises an alarm system.

In practical application, the structures of each part of the opening and closing actuating mechanism, the power station and the control system and/or the connecting lines thereof adopt redundancy design. For example, two opening and closing actuators are arranged at two ends of a pipe tunnel respectively in parallel, and one opening and closing actuator is used as a standby.

EXAMPLE III

In practical application, be equipped with the manhole on the pipe tunnel wall, the manhole can supply the access man to pass in and out.

In practical applications, the control system comprises an alarm system.

Example four

As shown in fig. 1, fig. 2, fig. 3, fig. 6, fig. 7 and fig. 8, the watertight device for a tube tunnel of a ship lateral thruster of this embodiment is driven by hydraulic pressure, and includes a lateral thruster tunnel 1, a lateral thruster 2, a watertight door 3, a sealing ring 4, a hydraulic opening/closing actuator 5, a hydraulic power station, a hydraulic locking pin 7 and an automatic control system, wherein the watertight door 3 is fixed on the lateral thruster tunnel 1 by a hydraulic mechanism, and can be watertightly combined with the lateral thruster tunnel; the bottom surface of side push pipe tunnel sets up a wash port, the wash port passes through the drain pipe and connects a drainage pump. The watertight door device of the ship lateral thruster pipe tunnel with the watertight performance comprises a watertight door, a hydraulic opening and closing actuating mechanism, a hydraulic power station and an automatic control system, wherein the watertight door is connected through a hinge, and is fixed on a lateral thruster tunnel through the hydraulic opening and closing mechanism and a hydraulic locking device, so that watertight combination with a port of the lateral thruster tunnel can be realized; the bottom surface of side push pipe tunnel sets up a wash port, the wash port passes through the drain pipe and connects a drainage pump. Therefore, when the ship does not use the side-push function, the watertight door can be combined with the port of the side-push pipe tunnel in a watertight manner, then seawater in the side-push pipe tunnel is discharged through the drain hole by virtue of the drainage pump, so that the resistance of the ship to navigation caused by water flowing into the side-push pipe tunnel in the navigation process is prevented, and the navigation speed is directly increased or the obvious energy-saving and emission-reducing effects under the rated navigation speed are directly realized; in addition, be equipped with access hole 6 on the pipe tunnel wall, the access hole can supply the maintainer business turn over for the maintainer can follow the side direction propeller pipe tunnel of direct entering evacuation sea water in the access hole in the cabin, inspects and maintains the side direction propeller, has avoided the state that the side direction propeller must enter the dry dock and just can overhaul in the past, has saved huge dry dock expense and the time of stopping the navigation, increases boats and ships availability factor. Simultaneously, avoided the sea water to stop and lead to breeding of marine organism in the side push pipe tunnel. Furthermore, the weight of the ship head can be reduced, so that the ship head is lifted, a better navigation state is formed, the navigation speed is further increased, and energy conservation and emission reduction are realized.

The present embodiment follows the following basic principle scheme in the technical design:

the using environment condition of the system meets various requirements of international main classification societies on international navigation infinite navigation areas.

Ambient temperature of system usage: mechanical system-20- +55 DEG C

An automatic control system is between 20 ℃ below zero and 70 DEG C

The ship dynamic factors considered by the system are as follows: transverse swinging static 15 degree dynamic 22.5 degree

Longitudinal swing static 5 degree dynamic 7.5 degree

The system materials and components are required to be suitable for normal use in humid air, salt spray, oil mist, mold, and vibration and impact generated during normal operation of the ship.

Each pipe tunnel type ship lateral thruster is provided with one set of (two) watertight doors which are respectively arranged at the two ends of the port side and the starboard side of the lateral thrust pipe tunnel.

The watertight door is divided into an opening state and a closing state. In the open state: the watertight door is positioned outside the ship body and is basically parallel to the ship board; in the closed state, the watertight door is basically flush with the ship outer plate line type and has no obvious concave-convex surface.

The system design meets the requirement that the ship can be normally opened/closed under the conditions of a certain navigational speed and a certain sea condition; when the ship speed or the sea state is larger than a set range, the watertight door has to be ensured to be in a firm closed state.

The watertight door is of watertight design and can withstand a minimum water pressure of 20 meters. Finite element analysis and calculation are needed to be carried out on the strength of the structural components of the watertight door, and the maximum hydrodynamic impact load value is designed to be 0.11-0.45 MPa according to the ship type.

The watertight door is opened and closed by a hydraulic oil cylinder and driven by a hydraulic power station. In practical application, the hydraulic driving mode may be a common driving mode such as air pressure or oil pressure, and a pneumatic power station or an oil pressure power station is correspondingly provided.

The design and component selection of all actuating mechanisms in the system meet the requirements of long-term underwater use.

The system actuator component is designed to be of a seawater self-lubricating type, and an external lubricating system is not needed.

The watertight door system is provided with a hydraulic locking device, and the watertight door is mechanically locked by adopting a hydraulic pin when the watertight door is opened or closed, so that the impact and pressure of water flow are overcome, and the watertight door is effectively prevented from loosening and falling off. In the same way, in practical application, the hydraulic pin can be arranged on a watertight door, can also be arranged on the wall of a pipe tunnel, and can also be a locking device realized by air pressure or other driving modes.

The system makes the anticorrosive coating according to the ship standard requirement.

The underwater structure of the system is typically fitted with a replaceable sacrificial aluminum anodic electrochemical corrosion protection device designed to have a life of about 5 years.

In practical application, the watertight door 3 is of an integral design and comprises a main body and a sealing cover fixedly connected with the main body, and the line type of the outer surface of the sealing cover is consistent with that of a ship hull outer plate; the main part inboard is equipped with the watertight contact surface with pipe tunnel terminal surface complex, watertight contact surface department is equipped with the sealing washer. The side pushes away pipe tunnel watertight door is whole pipe tunnel watertight door, and its ability of anti foreign matter impact improves greatly, and it is difficult to warp and damage, can maintain its watertight fit with the side pushes away pipe tunnel for a long time. The shape of the ship body side pushing device is consistent with the line type of the ship body outer plate, and the ship body side pushing device is waterproof, so that the resistance of the ship is greatly reduced when the side pushing device does not work. In a practical application, two sealing rings are arranged on the inner side edge of the watertight door of the side push pipe tunnel. The sealing ring not only plays a sealing role, but also plays a buffering and damping role. Particularly, when the watertight door of the side push pipe tunnel is slightly deformed after being used for a long time, if no sealing ring is arranged, the watertight door is difficult to be combined with the side push pipe tunnel in a watertight way; after the sealing ring is arranged, the sealing ring has certain elasticity, so that the influence caused by the deformation of the watertight door of the side push pipe tunnel can be effectively overcome. And because two sealing rings are arranged, after the structural deformation of the side-push pipe tunnel watertight door exceeds the elastic range of one sealing ring, the other sealing ring can still ensure the watertight performance of the pipe tunnel watertight door, namely the redundant sealing design, thereby reducing the probability that the pipe tunnel watertight door needs to enter a dry dock for maintenance after being deformed and reducing the maintenance rate of ships.

In one embodiment, a filter screen is disposed in the drain hole to prevent impurities from blocking the drain pump and causing poor drainage or damage to the water pump.

In a specific embodiment, a telemetering liquid level meter is arranged at the bottom of the side-push pipe tunnel, and can display whether seawater in the pipe tunnel is emptied and the seawater level height of the seawater which is not emptied in a ship control system under a body with a tightly closed water-tight door of the pipe tunnel, so that judgment conditions are provided for maintenance personnel to enter the pipe tunnel.

In a specific embodiment, the hydraulic opening and closing actuating mechanism comprises a hydraulic opening and closing oil cylinder, one end of the hydraulic opening and closing oil cylinder is hinged to the inner wall of the pipe tunnel, and the other end of the hydraulic opening and closing oil cylinder is hinged to the position, close to the middle, of the watertight door of the side push pipe tunnel. The accurate position of the hinge point of the hydraulic opening and closing oil cylinder needs to be calculated and determined according to the diameter of a water sealing door of the side push pipe tunnel and the distance of a non-interference space in the pipe tunnel. The hydraulic starting and stopping oil cylinder adopts a redundant design and is provided with a spare oil cylinder, so that when any one oil cylinder of the hydraulic starting and stopping oil cylinder fails, the other oil cylinder still has enough power to execute the opening and closing actions of the watertight door.

In a specific embodiment, the side push pipe tunnel watertight door is provided with a hydraulic locking pin on the edge, and the watertight door is locked on a base on the inner side of a port of the side push pipe tunnel to realize the stability of the watertight door after being closed, so that the watertight door is prevented from being opened uncontrollably due to external impact or self-problems. The hydraulic locking pins are usually at least two, and the number of the locking pins is increased if the diameter of the watertight door is larger.

In a specific embodiment, a plurality of underwater sensors are arranged on the pipe tunnel watertight door, so that whether the pipe tunnel watertight door is in a completely closed and locked position state or a completely opened position state or a semi-open and semi-closed position can be sensed. The signals of the sensors are connected with an operation control system of the lateral thruster, the lateral thruster is automatically kept in a stop state when the watertight door of the pipe tunnel is sensed to be in a closed position, and the lateral thruster is allowed to start to operate when the watertight door of the pipe tunnel is sensed to be in a fully opened position, so that an 'interlocking linkage' function in the automatic control system is formed, the lateral thruster is ensured not to be started by mistake when the watertight door of the pipe tunnel is in the closed position, or the watertight door of the pipe tunnel is not required to execute a closing action when the lateral thruster operates, and the thruster or the watertight door equipment of the pipe tunnel is prevented from being damaged. All sensors are arranged in double number and connected with independent signal lines, and when some sensors fail, other sensor signals can be automatically switched to enter a control monitoring system.

In a specific embodiment, the automation control system is controlled by a PLC logic program, and the control hardware thereof includes: the main control box, the ship control panel of the bridge, the on-site control panel and the emergency control panel, etc. when the system is in failure, all the control panels send sound and light alarm signals. Wherein, the driver's cabin control panel possesses the dimming function.

In a specific embodiment, an automatic control system and a lateral thruster form an interlocking function, a watertight door of a pipe tunnel is automatically opened after the system receives a lateral thrust starting request signal, and the system automatically feeds back a starting permission signal to the lateral thruster after the system confirms to be opened; after the side push completely stops working, the cover plate is automatically closed in a delayed mode after the system receives a closing signal of a motor of the propeller.

In one embodiment, the automatic control system can be set to open/close the watertight door of the pipe tunnel within a certain ship speed and a certain sea condition; when the ship speed or the sea condition is larger than the set range, if the watertight door of the pipe tunnel is not completely closed and locked, the system can output an alarm signal to the outside.

In one embodiment, the automatic control system can be configured to automatically close the watertight door of the tunnel after the watertight door of the tunnel is closed by side pushing for a certain time (determined according to the time when the side-pushing blades of different models are completely stopped).

In a specific embodiment, when the automatic control system fails or the hydraulic power station fails or the ship loses power, the side push pipe tunnel watertight door can be opened and closed through the hand-operated hydraulic pump. It is ensured that any failure of the hydraulic system should not affect the manual operation of the side push tube tunnel watertight door.

In a specific embodiment, a pressure energy storage device is arranged at the position of the hydraulic power station, when a power system has a fault, pressure energy accumulated in the energy storage device can ensure that a hydraulic actuating mechanism driving the pipe tunnel watertight door can perform more than three times of complete opening or closing actions of the pipe tunnel watertight door, so as to ensure that the pipe tunnel watertight door can be closed or opened in time under the fault mode that the pipe tunnel watertight door system loses conventional power, and meet the requirements of sailing, port-backing and maintenance of the pipe tunnel watertight door of a ship.

In a specific embodiment, in consideration of the characteristic that the equipment runs underwater for a long time, two hydraulic oil pipes, namely two hydraulic oil paths, can be arranged on each hydraulic oil cylinder, only one of the oil paths is needed in normal use, and when the oil path has faults such as leakage or fracture, the other oil path can be switched to be started through a valve, so that the risk that the equipment cannot run due to the fault of the one oil path is avoided, namely the reliability redundancy design.

System electrical automation interface

The system outputs signals:

signal name	Type of signal in common
		Open in place indication	Switching or analogue or digital quantities
Closed in place indication	Switching or analogue or digital quantities
		Lock status indication	Switching or analogue or digital quantities
Allowing side-push operation of feedback signals	Switching or analogue or digital quantities

System input signal:

signal name	Common signal type
		Ship log navigational speed signal	Switching or analogue or digital quantities
Side push operation request signal	Switching or analogue or digital quantities

Preferably, the lower end of the watertight door of the side push pipe tunnel is provided with a set of high-strength hinges, and the watertight door is firmly connected with the edge of the port of the pipe tunnel through the hinges and can realize a turning angle of about 90 degrees so as to complete the action of opening and closing the watertight door. One end of the hydraulic opening and closing oil cylinder is hinged to a base welded inside the pipe tunnel, the other end of one oil cylinder in the hydraulic opening and closing oil cylinder is hinged to a base welded on the inner side of the watertight door, and the other end of one oil cylinder in the other hydraulic opening and closing oil cylinder is hinged to a base welded on the watertight door hinge. Therefore, when the piston rod of the oil cylinder extends out, the watertight door can obtain pressure towards the outside of the pipe tunnel to be opened, and meanwhile, when the watertight door is completely opened, the oil cylinder is located at a position which is basically parallel to the bottom surface of the pipe tunnel and the inner surface of the watertight door through free rotation of the hinged point of the oil cylinder, so that the blocking of water flow pushed by the oil cylinder to the side is reduced to the minimum, and the using effect of side pushing (namely the pushing force of side pushing) is ensured. When the piston rod of the oil cylinder retracts, the watertight door can be closed by pulling force towards the inside of the pipe tunnel.

As a further preferable scheme, the hinge of the watertight door and the hinge point of the opening and closing oil cylinder are both arranged at the bottom of the side push pipe tunnel (i.e. the side close to the bottom of the ship), so that the watertight door is opened outwards and downwards when opened, the characteristic of minimum width of the bottom of the ship is fully utilized, and the danger that the watertight door collides with an underwater structure of a wharf after being opened is avoided. However, if the width of the ship at each position allows and is necessary, the water-tight door can be opened to the outside in different directions, such as upwards, forwards or backwards, by arranging the hinge and the hinge point of the oil cylinder at different positions along the circumference of the pipe tunnel.

Preferably, the side push pipe tunnel end is provided with more than two (more than two according to the size and weight of the water-tight door) small hydraulic locking pins at the upper, lower, left and right sides along the circumference at an average interval. Correspondingly, a hole type locking pin base is arranged on the inner side of the pipe tunnel watertight door 3 along the periphery corresponding to the locking pin. When the pipe tunnel watertight door is completely closed, the hydraulic locking pin extends out of and is inserted into a corresponding base hole on the pipe tunnel watertight door so as to realize rigid mechanical fixation of the pipe tunnel watertight door and ensure that the pipe tunnel watertight door cannot be loosened or even opened uncontrollably due to impact of water flow and floaters or pressure leakage of a driving hydraulic oil cylinder in the ship navigation process. According to pipe tunnel structural space and form, hydraulic pressure locking pin also can locate on the watertight door to locate the base on the pipe tunnel structure. The hydraulic locking pin is provided with a position sensor for monitoring the opening/closing state of the watertight door of the side push pipe tunnel.

Preferably, the design pressure of the hydraulic power station providing the driving force for the pipe-tunnel watertight door is calculated to ensure that the weight of the equipment, water flow impact and impact of external foreign objects can be resisted to ensure that sufficient power is available to open and close the pipe-tunnel watertight door. The hydraulic station is provided with a double oil pump unit, and when one oil pump fails, the other oil pump can still provide driving force for the watertight door of the pipe tunnel. The hydraulic pump station is further integrated with a manual pressure pump, when a pump station fails or a ship system loses electric power, the manual pressure pump can provide hydraulic driving force to carry out opening and closing operations of the side-push pipe tunnel watertight door, and therefore it can be guaranteed that any failure of the hydraulic system cannot cause the pipe tunnel watertight door to be incapable of being opened or closed.

As a preferable scheme, considering that the watertight door of the side push pipe tunnel is a device which runs under water for a long time, the hydraulic grease adopted by the system needs to meet the requirements of the latest international environmental regulations (including but not limited to USCG/USEPA/VGP/EAL and the like) so as to avoid polluting the marine water body environment in case of leakage.

As a preferable scheme, after seawater in the pipe tunnel is emptied, when the watertight door needs to be opened, the pipe tunnel should be filled with seawater through the drain hole by the water pump, so that water pressures at the inner side and the outer side of the watertight door are kept balanced, and the watertight door is convenient to open.

In practical application, the present invention can be embodied with the following parameter effects:

the sailing resistance of the ship is reduced, so that the fuel efficiency of the ship is improved, the energy consumption is reduced, and the energy is saved and the environment is protected while the maneuverability of the ship is ensured;

the comprehensive ship design theory and actual survey show that under the condition of the same sea condition and host power, the speed of the ship under the state of closing the side thrust cover is improved by about 2 percent compared with the non-cover state of the pipe tunnel, and huge fuel cost is saved for shipowners in decades of operation period of the sailing ship;

the resistance increase of the commercial ship provided with the side-push channel is large, and the resistance increase part mainly comes from the hydrodynamic pressure generated by the obstruction of the opening of the side-push channel on the flow of the water body; the resistance increment without the resistance reduction measure under the working navigational speed of the ship is 5.22 percent; the increment of resistance of the watertight door sealing cover is reduced to 0.65%.

The implementation of the invention has the advantages that:

The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention disclosed herein are intended to be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A watertight device for a pipe tunnel of a ship lateral thruster is arranged on a ship with a pipe tunnel type lateral thruster and is characterized in that the watertight device comprises a watertight door, an opening and closing executing mechanism, a power station and a control system, the watertight door is arranged at ports on two sides of the pipe tunnel through hinged connection, the opening and closing executing mechanism is used for executing the action of opening and closing the watertight door through connecting a pipe tunnel wall and the watertight door, the power station is connected with the opening and closing executing mechanism to drive the opening and closing executing mechanism, the control system is used for controlling the starting and stopping of the power station and collecting signals, the watertight door is fixed on the end surface of the pipe tunnel through the opening and closing executing mechanism and is in watertight combination with the end surface of the pipe tunnel, a drainage system is arranged at the bottom of the pipe tunnel and is connected with the control system, a watertight access hole and a watertight access hole cover are arranged at the top of the pipe tunnel, and the watertight access hole is communicated with the lateral thruster, the watertight door is located the hull outside and is basically parallel with pipe tunnel bottom under the state of opening, the watertight door passes through hinge and pipe tunnel port edge firm connection and can realize the action of opening the watertight door with the 90 degrees turnover angle of boats and ships plumb line left and right sides in order to accomplish, it includes that hydraulic pressure opens and close actuating mechanism opens and close the hydro-cylinder to open and close the hydro-cylinder, hydraulic pressure opens and close hydro-cylinder one end articulate on pipe tunnel inner wall, the other end articulates the position that pipe tunnel watertight door is close to the middle part, the accurate position of pin joint that hydraulic pressure opened and close the hydro-cylinder need calculate according to the diameter of pipe tunnel watertight door and the distance of no interference space in the pipe tunnel and confirm.

2. The watertight device for the marine lateral thruster pipe and tunnel according to claim 1, wherein the watertight device comprises a plurality of locking pins, and the locking pins are used for realizing the stability of the watertight device after the watertight device is closed.

3. The watertight ship side thruster pipe tunnel device according to claim 1, wherein the watertight door is an integral watertight door having one side hinged to the port of the side thruster pipe tunnel and an outer surface substantially aligned with the line of the outer plate of the hull after being closed and fitted to the side thruster pipe tunnel.

4. The watertight device for the pipe and tunnel of the ship side thruster of claim 1, wherein the contact surface of the watertight door and the port of the pipe and tunnel is provided with a sealing ring.

5. The watertight ship side thruster pipe-tunnel device according to claim 1, wherein the control system is networked with the side thruster control system and the ship speed control system to realize signal intercommunication and interlocking linkage.

6. The marine side thruster pipe and tunnel watertight fitting of claim 1 wherein the watertight fitting comprises a plurality of sensors arranged as required, and the control system is connected to all the sensors and collects all the sensor signals.

7. Marine side thruster pipe tunnel watertight installation according to one of the claims 1 to 6, characterised in that the power station is provided with energy storage means.

8. The marine side thruster tunnel watertight fitting of any one of claims 1 to 6 wherein the control system includes an alarm system.

9. The watertight ship side thruster pipe and tunnel device according to any one of claims 1 to 6, wherein the structures of the opening and closing actuator, the power station and the control system and/or the connection lines thereof are designed redundantly.

10. The watertight device for the ship side thruster pipe and the tunnel according to claim 1, wherein the drainage system comprises a drainage hole and a drainage pump, the drainage pump is connected with the control system, and a filter screen is arranged at the drainage hole.

11. The watertight tube-tunnel device for the ship side thruster of claim 1, wherein the bottom of the tube-tunnel is provided with a liquid level meter, and the liquid level meter is connected with a control system.

12. The watertight device for the ship side thruster pipe and tunnel according to any one of claims 1 to 6, wherein the power station is provided with a manual power mechanism, and the manual power mechanism can be operated by manually controlling an opening and closing actuator.

13. The watertight device for the pipe and tunnel of the ship side thruster of any one of claims 1 to 6, wherein the end surface of the pipe and tunnel is provided with a grid.