CN114620205A

CN114620205A - Ultrahigh-speed cruising rescue speedboat

Info

Publication number: CN114620205A
Application number: CN202210211597.9A
Authority: CN
Inventors: 何凡
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-02-06
Filing date: 2020-02-06
Publication date: 2022-06-14
Also published as: CN111268064A; CN111268064B

Abstract

The invention discloses an ultrahigh-speed cruise rescue yacht which comprises a yacht body, a water channel and a propulsion pump, wherein the water channel parallel to the axis of the yacht body is arranged at the bottom of the yacht body, and the propulsion pump is arranged on the path inside the water channel. The propulsion pump comprises a seat ring, axial flow blades, a magnetic bearing, a stator and a rotor, wherein an annular groove is formed in a water channel, the seat ring is installed in the groove through the magnetic bearing, the axis of the seat ring coincides with the axis of the water channel, a plurality of axial flow blades which are uniformly distributed circumferentially are installed on the inner ring of the seat ring, the axial flow blades form a fan shape with the axis of the seat ring and extend towards the axis direction of the seat ring, all the axial flow blades extend to the axis of the seat ring and are welded together in a spot mode, the rotor is fixedly installed on the outer ring of the seat ring, the stator is fixed on the inner wall of the water channel and faces the rotor, the magnetic bearing is installed on the seat ring and the inner wall of the water channel in pairs respectively, and the magnetic bearing is arranged along the axial direction and the radial direction of the axis of the water channel.

Description

Ultrahigh-speed cruising rescue speedboat

Technical Field

The invention relates to the field of yachts, in particular to an ultrahigh-speed cruise rescue yacht.

Background

The yacht is a water surface running ship, has high running speed and is often used for water surface emergency command and rescue.

When the speedboat runs, the water body breaking the front can bear larger resistance, and the head of the speedboat is lifted up, so that the speedboat running in a heavy wave environment is unstable; in addition, due to the fact that water is squeezed from the bottom of the ship body in the structure with the rear propeller, water entering the propeller is gathered from two sides and enters the area between the propeller and the stern, and then is pumped by the propeller.

The traditional steering is completed through a steering rudder at the tail part, and when the vehicle runs at high speed, if the position of the steering rudder is suddenly changed, the stress is easy to change violently, the running stability is influenced, and even the vehicle turns over.

Disclosure of Invention

The invention aims to provide an ultrahigh-speed cruise rescue yacht to solve the problems in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides an hypervelocity is cruises and rescues motor boat, motor boat includes hull, water course and propulsion pump, and the hull bottom sets up the water course that parallels with its self axis, sets up the propulsion pump on the inside route of water course.

The water channel is used as a water inlet channel and a water outlet channel, the propulsion pump is arranged in the water channel to play a role of pushing, and compared with the traditional tail-mounted propeller mounting mode, the propulsion pump arranged in the water channel can pump water with larger flow, because the water is squeezed by the bottom of the ship body when the speed boat runs fast in the prior art, the water entering the propeller is converged from two sides and enters the area between the propeller and the stern, and then is pumped by the propeller, the disturbance is large, the water flow is turbulent when the speed boat runs fast, the running working condition of the propeller is very poor and is easy to damage, and the fast running ship head breaks the water in front to advance, so the resistance to advance is large, the water channel is constructed, the propulsion pump is used for pumping the water in front of the ship body, the advancing process is just one suction process of the water, and the resistance to break the water in front of the ship head is greatly reduced, and the water flows in the water channel stably, so that the normal and stable operation of the propulsion pump is facilitated, and the propulsion pump still has reliable operation capability under the condition of high-speed running in time.

The fluid in the water channel is like a cylindrical rail, and the ship body is a part running on the rail, so that under the condition of large waves, the ship body can still be limited on the water surface layer and cannot be separated from the water body, and the danger is caused.

Furthermore, a filter screen is arranged at the head of the water channel. The filter screen filters out a large sundry possibly existing in water, such as plastic bottles and other objects on the surface of a water body, when the speed boat runs at high speed, the boat body runs on a cylindrical rail on the surface layer, so some sundries floating on the surface of the water body can reach the water inlet, if the sundries are sucked, the propulsion pump is easily blocked, and the filter screen plays a role in protecting the propulsion pump.

Further, the propulsion pump includes the seat ring, axial compressor blade, magnetic bearing, stator and rotor, the inside ring channel that is equipped with of water course, install the seat ring through magnetic bearing in the inslot, the axis of seat ring coincides with the water course axis, the axial compressor blade of a plurality of circumference equipartitions is installed to the inner circle of seat ring, axial compressor blade becomes fan-shaped and extends toward seat ring axis direction with seat ring axis, all axial compressor blade extend to the seat ring axis on the back spot welding together, increase connection stability, rotor fixed mounting is in the outer lane of seat ring, the stator is fixed on the water course inner wall and face-to-face with the rotor, magnetic bearing installs respectively in pairs on seat ring and water course inner wall, magnetic bearing all has the setting along the axial of water course axis and radially.

The shaftless propelling structure of the propelling pump can fully utilize the channel area of a water channel so as to obtain larger flow and facilitate propelling the speedboat to run quickly, the shaftless structure is realized by external rotary driving and rotary supporting, the magnetic bearing positions the seat ring in the water channel in the radial direction and the axial direction and installs the seat ring in the water channel, the magnetic bearing uses a magnet pair of a permanent magnet and an electromagnet component, mutual repulsion and suspension are realized in a limited space, the magnetic bearing is used as the rotary supporting, compared with the traditional mechanical roller bearing, the rotary resistance of the seat ring is almost completely eliminated (the rotary resistance of a water body to the seat ring is not considered), so that the upper limit of the rotating speed is higher, the traditional roller bearing needs higher installation precision and structural size precision when running under a high-speed working condition, usually six grades are usually, after more than five thousand turns, the precision is preferably improved to five grades, and the precision requirement on a workpiece is very high, the magnetic bearing has a reduced requirement for manufacturing size and mounting accuracy, and although the hardware cost is slightly increased, it is advantageous for high-speed applications.

The rotation of the seat ring and the axial flow blades on the seat ring is driven by a stator and a rotor, the rotor is fixed on the outer ring of the seat ring, the stator is fixed on the inner wall of the water channel, the stator and the rotor are the same as the stator and the rotor in a motor, electromagnetic fields are established, and then the rotor is driven to rotate.

Furthermore, the wake flow pipe comprises a spray pipe, an angle adjusting section and advection wing plates, a section of round pipe extends out of the tail end of the water channel, the round pipe is connected with the spray pipe through the angle adjusting section, the angle adjusting section is a section of flexible pipe body, the angle adjusting section can be stretched and deformed to be used for universal connection of the spray pipe and the round pipe, and the advection wing plates are arranged on two sides of the spray pipe in the horizontal direction.

Because the nose part of the speedboat is supported by the water body when the nose part of the speedboat is rushing away from the water body when the speedboat runs at high speed, the nose part of the speedboat is often in a high-head and low-stern attack angle raising posture, at the moment, if the tail part of the water channel directly jets water flow, the water flow inclines downwards, the nose raising trend of the boat body is aggravated, although the center of gravity of the speedboat is not likely to turn over the boat, the nose raising posture is not beneficial to dealing with big waves, therefore, some measures are taken to prevent the nose raising and the attack angle from inclining forwards, the tail flow pipe is additionally arranged at the tail part of the water channel, the jet pipe is connected with the round pipe through a section of hose, the orientation of the jet pipe can be adaptively changed, then, the advection wing plates are arranged at the two horizontal sides of the jet pipe, if the nose part of the boat body raises upwards, the jet pipe inclines downwards, at the moment, the advection wing plates are acted by the water flow to keep the horizontal posture along with the running of the advection of the water flow, thereby make the effluence gesture backward that the spray tube returned the horizontally, the reaction force that the effluence of spray tube caused is all used for promoting, and can not produce the power of vertical direction.

Furthermore, the side surface of the circular tube is also provided with wing plates, and the wing plates on the side surface of the circular tube are lifting wing plates, and the span length of the wing plates exceeds the width of the ship body at the height of the wing plates. The lift wing plate is a wing plate similar to an airplane wing, after water flows through the wing plate, the wing plate can receive lift force caused by the water flow, and the circular pipe and the ship body are fixed, so that the lift force received by the lift wing plate on the side surface of the circular pipe is directly transmitted to the tail part of the ship body, and the ship tail is subjected to a supporting force, so that the rising trend of the ship head is inhibited, and the ship body tends to a horizontal posture.

Furthermore, a baffle plate is arranged at the front end of the water channel and is controlled to shield zero to the whole area of the left half part or the right half part of the water channel in the advancing direction.

The steering rudder of the traditional yacht is arranged at the stern, and water flow is stirred through a stirring plate to cause steering, but when the yacht runs at a high speed, the steering rudder arranged at the tail is easy to destabilize and even turn over the yacht when the angle suddenly changes. The invention changes the mode of shielding the water inlet without arranging a steering rudder, the water inlet is arranged at the front position and is fed from two sides under the normal state, when a baffle plate is used for shielding the left part, only the water inlet at the right part is used for carrying out the water inlet process, and the tail part sprays water in the whole area, so that the left and the right are unevenly stressed, the steering can be analyzed and analyzed from the water body impact in front of the ship, and after the water inlet at the left side is shielded, the left side is impacted by more water, thereby driving the ship head to steer to the right.

Furthermore, two propulsion pumps are arranged in the water channel, the blade placement angles of the two propulsion pumps are opposite, and the rotating speeds and the directions are equal and opposite during operation.

The propeller pump uses the axial flow blades to do work, the rotational speed can be generated on the water body when the propeller pump does work, and the speed of the part of the speed can not be used for pushing the speedboat to advance but is lost in the water, so that the energy of the rotational speed is recovered and the axial speed is doubled by arranging the propeller pumps with opposite blade mounting angles and turning directions, so that the speed obtained by the water body is all the axial speed which is all used for propulsion.

As optimization, the filter screen is conical and is pierced into a water body in front of the ship body, the baffle is in a foldable conical cylinder shape, and the area of the filter screen is shielded by the baffle through expansion. The water filtering area is increased by the conical filter screen, and the water inlet is increased.

Preferably, a filter screen is also arranged at the water outlet end of the spray pipe. When the propulsion pump runs reversely, the speedboat can reverse, at the moment, the water flow direction is opposite, and in order to prevent sundries from reaching the propulsion pump, a filter screen is arranged at the water outlet end of the spray pipe.

Compared with the prior art, the invention has the beneficial effects that: according to the invention, the water body in the water channel is pumped by the propulsion pump, the speed boat moves forward, the water sucked by the suction inlet enters the water channel and flows stably to reach the propulsion pump to be pumped backwards continuously, the working condition of the propulsion pump is improved, the speed boat is difficult to damage, and the pumped water is sprayed out of the outside at the spray pipe to push the speed boat to move forwards; the advection wing plates on the side walls of the spray pipes can be kept in a parallel state with the surrounding water flow all the time, so that the spray pipes can also keep horizontal outflow, and when the speed boat runs at high speed, the further aggravation of the rising of the boat head is prevented, and the ejected water flow is completely used for propulsion; the lifting force type wing plates on the side surfaces of the circular tubes are acted by peripheral water flow during running to load a vertical upward force on the stern to support the stern and inhibit the bow from rising, so that the water-attack angle of the speedboat is forward inclined; the double propulsion pumps in the water channel are arranged, the water body rotation speed caused by a single propulsion pump is recovered, and the axial emergent speed is increased, so that the running speed of the speedboat is increased; the shielding type front steering structure is stable in steering and not easy to destabilize.

Drawings

In order that the present invention may be more readily and clearly understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a view in the direction A of FIG. 1;

FIG. 3 is a schematic view of the propulsion pump of the present invention;

FIG. 4 is a schematic perspective view of the seat ring with axial flow blades installed in accordance with the present invention;

FIG. 5 is a schematic view of the setting angle of the axial flow blades of the present invention on a water surface deployment surface;

FIG. 6 is a schematic view of the structure at the draft tube of the present invention;

FIG. 7 is a schematic perspective view of the draft tube of the present invention;

fig. 8 is a schematic view of a structure of the filter net in a top view of the present invention.

In the figure: 1-ship body, 2-water channel, 21-round tube, 3-filter screen, 4-propulsion pump, 41-seat ring, 42-axial flow blade, 43-magnetic bearing, 44-stator, 45-rotor, 5-tail flow tube, 51-jet tube, 52-angle adjusting section, 53-advection wing plate and 6-baffle.

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.

As shown in figure 1, the ultra-high speed cruising rescue speedboat with the forward water attack angle comprises a boat body 1, a water channel 2 and a propulsion pump 4, wherein the water channel 2 parallel to the axis of the boat body 1 is arranged at the bottom of the boat body 1, and the propulsion pump 4 is arranged on the path inside the water channel 2.

The water channel 2 is used as a water inlet channel and a water outlet channel, the propulsion pump 4 is arranged in the water channel 2 to play a role of pushing, and compared with the traditional tail-mounted propeller mounting mode, the propulsion pump 4 arranged in the water channel 2 can pump water with larger flow, because the water is squeezed at the bottom of the ship body in the traditional speed boat when the speed boat runs fast, the water entering the propeller is converged from two sides and enters the area between the propeller and the stern, and then is pumped by the propeller, the disturbance is large during fast running, the water flow is turbulent, the running working condition of the propeller is very poor and is easy to damage, and the fast running bow breaks the water in front to advance, so the forward resistance is large, but the water channel 2 is constructed, the water in front of the ship body 1 is pumped by the propulsion pump 4, and the advancing process is just a suction process of the water, the resistance of the ship head to break the water body is greatly reduced, the water flows in the water channel 2 stably, the normal and stable operation of the propulsion pump 4 is facilitated, and the ship still has reliable operation capability under the condition of high-speed running in time.

The fluid in the water channel 2 is like a 'cylindrical rail', and the ship body 1 is a part running on the rail, so that under the condition of large wave, the ship body 1 can still be limited on the water surface layer and cannot be separated from the water body, and the danger is caused.

As shown in fig. 1 and 2, a filter screen 3 is arranged at the head of the water channel 2. The filter screen 3 filters out a large impurity which may exist in water, such as plastic bottles on the surface of the water body, and when the speed boat runs at a high speed, the boat body 1 runs on a "cylindrical rail" on the surface layer, so that some impurities floating on the surface of the water body may reach the water inlet, and if the impurities are sucked, the propulsion pump 4 is easily blocked, and therefore, the filter screen 3 plays a role in protecting the propulsion pump 4.

As shown in fig. 3 and 4, the propeller pump 4 includes a seat ring 41, axial flow blades 42, a magnetic bearing 43, a stator 44, and a rotor 45, wherein an annular groove is formed inside the water channel 2, the seat ring 41 is installed in the groove through the magnetic bearing 43, the axis of the seat ring 41 coincides with the axis of the water channel 2, a plurality of axial flow blades 42 uniformly distributed circumferentially are installed on an inner ring of the seat ring 41, the axial flow blades 42 form a fan shape with the axis of the seat ring 41 and extend in the axial direction of the seat ring 41, all the axial flow blades 42 extend to the axis of the seat ring 41 and are then spot-welded together to increase the connection stability, the rotor 45 is fixedly installed on an outer ring of the seat ring 41, the stator 44 is fixed on the inner wall of the water channel 2 and faces the rotor 45, the magnetic bearings 43 are installed on the inner walls of the seat ring 41 and the water channel 2 in pairs, and the magnetic bearings 43 are both arranged along the axial direction and the radial direction of the axis of the water channel 2.

The shaftless propelling structure of the propelling pump 4 can fully utilize the channel area of the water channel 2 so as to obtain larger flow rate for propelling the speedboat to run quickly, the shaftless structure is realized by external rotary driving and rotary supporting, the magnetic bearing 43 positions the seat ring 41 in the radial direction and the axial direction and is arranged in the water channel 2, the magnetic bearing 43 is a magnet pair using a permanent magnet and an electromagnet component, the permanent magnet and the electromagnet component are mutually repelled and suspended in a limited space, the magnetic bearing 43 is used as the rotary supporting, compared with the traditional mechanical roller bearing, the rotary resistance of the seat ring 41 is almost completely eliminated (the rotary resistance of a water body to the seat ring 41 is not considered), so that the upper limit of the rotating speed is higher, and the traditional roller bearing needs larger installation precision and structure size precision under the high-speed working condition, usually six grades, and is preferably improved to five-grade precision after more than five thousand turns, this requires high precision for the workpiece, and the magnetic bearing requires reduced manufacturing size and mounting precision, and although the hardware cost is slightly increased, it provides a great advantage for high-speed applications.

The rotation of the seat ring 41 and the axial flow blades 42 thereon is driven by a stator and a rotor, the rotor 45 is fixed on the outer ring of the seat ring 41, and the stator 44 is fixed on the inner wall of the water channel 2, which are the same as the stator and the rotor in the motor, and are both electromagnetic fields established, and then the rotor is driven to rotate.

As shown in fig. 6, the wake flow pipe 5 includes a nozzle 51, a angle adjusting section 52 and a flat flow wing plate 53, a section of circular pipe 21 extends from the end of the water channel 2, the circular pipe 21 is connected to the nozzle 51 through the angle adjusting section 52, the angle adjusting section 52 is a flexible pipe body, the angle adjusting section 52 can be extended and deformed for universal connection between the nozzle 51 and the circular pipe 21, and the flat flow wing plate 53 is disposed on two sides of the nozzle 51 in the horizontal direction.

When the speed boat runs at high speed, the bow part of the speed boat is lifted by the water body when rushing away from the water body, so the speed boat is often in a state of raising at a high bow angle and a low stern angle, at the moment, if the tail part of the water channel 2 directly sprays water flow, the water flow inclines downwards, the rising trend of the bow of the boat body 1 is aggravated, although the speed boat cannot be turned over because the center of gravity of the speed boat is almost in the middle part, but the rising state of the bow is not beneficial to dealing with big waves, so some measures should be taken to prevent the rising and lead the water angle to incline forwards, the tail part of the water channel 2 is additionally provided with the draft tube 5, the direction of the draft tube 51 is adaptively changed by connecting a section of hose with the circular tube 21, then, advection wing plates 53 are arranged at two horizontal sides of the draft tube 51, if the bow part of the boat body 1 inclines downwards, at the moment, the advection wing plates 53 keep the horizontal state along with the running of the water flow, so that the spout 51 returns to the horizontal backward outflow posture, the reaction force caused by the outflow of the spout 51 is entirely used for propulsion without generating a force in the vertical direction.

The side of the round tube 21 is also provided with a wing plate, and the wing plate on the side of the round tube 21 is a lifting wing plate and has a span length exceeding the width of the ship body at the height of the wing plate. The lift wing plate is similar to an airplane wing, after water flows through the lift wing plate, the lift wing plate can receive a lift force caused by the water flow, and the circular tube 21 is fixed with the ship body 1, so that the lift force received by the lateral lift wing plate of the circular tube 21 is directly transmitted to the tail part of the ship body 1, and the stern receives a supporting force, so that the rising trend of the ship head is inhibited, and the ship body tends to a horizontal posture.

As shown in fig. 8, a baffle 6 is disposed at the front end of the water channel 2, and the baffle 6 is controlled to block zero to all areas of the left half or the right half of the water channel 2 in the advancing direction.

The steering rudder of the traditional yacht is arranged at the stern, and water flow is stirred through a stirring plate to cause steering, but when the yacht runs at a high speed, the steering rudder arranged at the tail is easy to destabilize and even turn over the yacht when the angle suddenly changes. The invention does not set a steering rudder but uses a mode of shielding the water inlet, as shown in figure 8, the front water inlet is used for water inlet on two sides under the normal state, when a baffle 6 is used for shielding the left part, only the water inlet on the right side is used for water inlet process, and the tail part sprays water in the whole area, therefore, the left and right are unevenly stressed, and the steering can be analyzed by the impact of the water body in front of the ship, as shown in figure 8, after the left water inlet is shielded, the left side is impacted by more water, thereby driving the ship head to steer to the right.

Two propulsion pumps 4 are arranged in the water channel 2, the blades 42 of the two propulsion pumps 4 are arranged at opposite angles, and the rotating speeds and the directions are equal and opposite when the two propulsion pumps are operated.

The propulsion pump 4 applies work by using the axial flow blades 42, and when the propulsion pump applies work, the rotational speed is generated on the water body, and the speed is not used for propelling the yacht but is lost in the water, so that the two blades 42 are used for placing the propulsion pumps 4 with opposite angles and opposite in direction, the rotational speed energy is recovered, the axial speed is doubled, and the speed obtained by the water body is all the axial speed and is all used for propulsion.

The filter screen 3 is conical to pierce into the water in the front of the ship body 1, the baffle 6 is in a foldable conical cylinder shape, and the baffle 6 shields the area of the filter screen 3 by unfolding. The conical filter screen 3 increases the water filtering area and increases the water inlet.

A filter screen is also arranged at the water outlet end of the spray pipe 51. When the propulsion pump runs reversely, the yacht can run reversely, the water flow direction is opposite, and in order to prevent sundries from reaching the propulsion pump 4, a filter screen is arranged at the water outlet end of the spray pipe 51.

The operation process of the invention is as follows: people on the yacht drive the yacht, the water in the water course 2 is pumped by the propulsion pump 4, the yacht advances, the suction inlet sucks water and enters the water course and flows to the propulsion pump 4 in a stable state and is continuously pumped backwards, the pumped water is sprayed out from the outside at the spray pipe 51, the yacht is pushed to advance, the advection wing plates 53 on the side walls of the spray pipe 51 can keep a parallel state with the surrounding water flow constantly, thereby the spray pipe 51 is kept to flow horizontally and flows out, when the yacht runs at a high speed, the upwelling of the bow is prevented from being further aggravated, and the lifting force type wing plates on the side surfaces of the circular pipe 21 are loaded with a vertical upward force at the stern under the action of the surrounding water flow when the yacht runs, the stern is lifted, the upwelling of the bow is inhibited, and the water angle of the yacht is inclined forwards.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides an hypervelocity is cruised and is rescued yacht which characterized in that: the speed boat comprises a boat body (1), a water channel (2) and a propulsion pump (3), wherein the water channel (2) parallel to the axis of the boat body (1) is arranged at the bottom of the boat body (1), and the propulsion pump (3) is arranged on the path inside the water channel (2); the tail part of the water channel (2) is provided with a tail flow pipe (5), the head part of the water channel (2) is provided with a filter screen, and the filter screen is conically penetrated into a water body in front of the ship body;

the propulsion pump (3) comprises a seat ring (41), axial flow blades (42), a magnetic bearing (43), a stator (44) and a rotor (45), wherein an annular groove is formed in the water channel (2), the seat ring (41) is installed in the groove through the magnetic bearing (43), the axis of the seat ring (41) is overlapped with the axis of the water channel (2), a plurality of axial flow blades (42) which are uniformly distributed on the circumference are installed on the inner ring of the seat ring (41), the axial flow blades (42) form a fan shape with the axis of the seat ring (41) and extend towards the axis direction of the seat ring (41), all the axial flow blades (42) extend to the axis of the seat ring (41) and then are welded together in a spot mode, the rotor (45) is fixedly installed on the outer ring of the seat ring (41), the stator (44) is fixed on the inner wall of the water channel (2) and faces the rotor (45), and the magnetic bearing (43) is installed on the inner walls of the seat ring (41) and the water channel (2) in pairs respectively, the magnetic bearings (43) are arranged along the axial direction and the radial direction of the axis of the water channel (2);

the tail pipe (5) comprises a spray pipe (51), an angle adjusting section (52) and a advection wing plate (53), a section of round pipe (21) extends out of the tail end of the water channel (2), the round pipe (21) is connected with the spray pipe (51) through the angle adjusting section (52), the angle adjusting section (52) is a section of hose body, the angle adjusting section (52) is stretched and deformed to be used for universal connection of the spray pipe (51) and the round pipe (21), and the advection wing plate (53) is arranged on two sides of the spray pipe (51) in the horizontal direction;

wing plates are also arranged on the side surfaces of the circular tubes (21), the wing plates on the side surfaces of the circular tubes (21) are lifting wing plates, and the span length of the wing plates exceeds the width of the ship body at the height of the wing plates;

and a filter screen for preventing sundries from reaching the propulsion pump is arranged at the water outlet end of the spray pipe (51).