A ship propeller-rudder combined vortex elimination energy-saving device and installation method

Abstract

The present application discloses a ship propeller-rudder combined vortex elimination energy-saving device and an installation method, which relate to the technical field of ship propulsion devices, including a rudder blade, a rudder shaft, a propeller, a vortex elimination device and a tail shaft; the vortex elimination device comprises a vortex elimination slide cylinder and a vortex elimination rotating cylinder, a thrust chamber is provided inside the vortex elimination rotating cylinder, and the thrust chamber is filled with gas; an air intake valve is fixed on one side of the vortex elimination rotating cylinder, and the air intake valve is connected to the internal space of the vortex elimination rotating cylinder; a matching groove is provided in the middle of the side of the rudder blade close to the propeller, one end of the vortex elimination slide cylinder is abutted against the matching groove, and the other end is slidably connected with the thrust chamber inside the vortex elimination rotating cylinder; the interior of the vortex elimination slide cylinder is hollow and one end thereof away from the vortex elimination rotating cylinder is open, and the opening is covered and fixed with a tightening film; the technical effect is achieved that the vortex elimination device can actively cooperate with the groove on the rudder blade without changing the angle when the rudder blade turns.

Description

Technical Field

[0001] The present invention relates to the technical field of ship propulsion devices, and in particular to a ship propeller-rudder combined vortex elimination and energy-saving device and an installation method thereof. Background Art

[0002] The propeller of a ship pushes the seawater to generate thrust when it turns, thus driving the entire ship forward. As the propeller rotates, it cuts the seawater below it at a regular rate and pushes the seawater backward, generating forward thrust. When the propeller rotates, it not only pushes the water backward, but also creates a rotating flow in the water, i.e., an eddy. These eddies cause energy dispersion and loss because they represent the ineffective part of the energy in the water flow. When a eddy is formed, the surrounding water is driven by the rotating fluid and flows toward the center of the eddy.

[0003] One of the existing ship energy-saving technologies, the propeller rear vortex-eliminating fin is a mature energy-saving technology. Its energy-saving mechanism is a ship hydrodynamic energy-saving device installed on the tail end face of the propeller to recover the energy loss of the propeller hub vortex. Another type is the energy-saving rudder ball in the existing ship energy-saving technology. In order to improve the propeller propulsion efficiency, thereby achieving vortex elimination energy saving and drag reduction, the Chinese patent with the authorization announcement number CN112124543B in the prior art discloses a ship propeller-rudder combined vortex elimination energy-saving device and an installation method, which includes a propeller tail shaft installed at the tail of the ship body, a propeller is installed on the propeller tail shaft, and a vortex elimination device for eliminating vortices is installed at the tail of the propeller tail shaft, the vortex elimination device is fixedly connected to the propeller hub of the propeller, and rotates with the propeller tail shaft; the tail of the vortex elimination device extends to the groove inside the rudder blade; the rudder blade is installed at the tail of the ship body through the rudder blade shaft assembly.

[0004] The above-mentioned vortex elimination device is directly connected to the propeller and the tail shaft, and will not form resistance behind the propeller as the rudder rotates the crosspiece, ensuring that a good vortex elimination function can still be maintained when turning the rudder. The above-mentioned vortex elimination device contacts the rudder blade by inserting into the groove on the rudder blade. However, during the turning process of the rudder blade, the direction of the vortex elimination device remains unchanged, while the angle between the vortex elimination device and the rudder blade changes, resulting in a larger gap in the groove, so that the water flow on both sides of the rudder blade will form a flow into the groove when passing through the gap, thereby generating a certain amount of energy loss, and forming a local vortex between the groove and the end of the vortex elimination device, so that its vortex elimination effect needs to be improved. Summary of the invention

[0005] The embodiment of the present application provides a ship propeller-rudder combined vortex-eliminating and energy-saving device and an installation method, thereby solving the technical problem that the vortex-eliminating device in the prior art will generate a gap when the rudder blade turns, and the vortex in the gap is difficult to eliminate, thereby causing propulsion loss. The embodiment of the present application achieves the technical effect that the vortex-eliminating device can actively cooperate with the groove on the rudder blade without changing the angle when the rudder blade turns.

[0006] The embodiment of the present application provides a ship propeller-rudder combined vortex elimination energy-saving device and an installation method, comprising a rudder blade, a rudder shaft, a propeller, a vortex elimination device and a tail shaft; the tail shaft is arranged horizontally, the rudder shaft is arranged vertically, and the tail shaft is fixedly connected to the propeller; the vortex elimination device is arranged between the propeller and the rudder blade; the vortex elimination device comprises a vortex elimination sliding cylinder and a vortex elimination rotating cylinder, both of which are cylindrical, the vortex elimination rotating cylinder is fixedly connected to the tail shaft at one end close to the propeller, and an opening is provided at the other end and the opening is facing the rudder blade, a thrust chamber is provided inside the vortex elimination rotating cylinder, and the thrust chamber is filled with gas; an air intake valve is fixed on one side of the vortex elimination rotating cylinder, and the air intake valve is connected to the internal space of the vortex elimination rotating cylinder;

[0007] A matching groove is provided in the middle part of the rudder blade close to the propeller, one end of the vortex elimination slide cylinder is in contact with the matching groove, and the other end is slidably connected to the thrust chamber inside the vortex elimination drum; the interior of the vortex elimination slide cylinder is hollow and one end away from the vortex elimination drum is open, and the opening is covered and fixed with a tightening film, which is made of elastic rubber material.

[0008] Preferably, a sealing rubber ring is fixed to one end of the vortex-eliminating slide cylinder located in the thrust chamber, and the sealing rubber ring is made of rubber and is used to prevent air leakage in the thrust chamber; an arc plate is fixed to one end of the vortex-eliminating slide cylinder close to the abutting membrane, and the arc plate is an arc-shaped plate with a concave surface facing the abutting membrane, and the arc plate divides the interior of the vortex-eliminating slide cylinder into two independent spaces, the abutting membrane and one side of the arc plate form a first reaction chamber, and the interior of the vortex-eliminating slide cylinder on the other side of the arc plate forms a second reaction chamber, and the upper and lower side walls of the first reaction chamber are concave toward the arc plate, so as to adapt to the turning of the rudder blade, and the first reaction chamber and the second reaction chamber are both filled with gas, and the abutting membrane is in contact with the matching groove, and the abutting membrane is deformed under the push of the gas in the first reaction chamber, so as to adapt to the shape of the matching groove, and the abutting membrane is always close to the matching groove when the rudder blade turns.

[0009] Preferably, a piston cylinder coaxially arranged with the vortex elimination slide cylinder is fixed at the center of the arc plate, and the piston cylinder includes a piston rod and a piston head. The piston cylinder as a whole is located in the second reaction chamber and opens toward the first reaction chamber, and the piston head is located on the side close to the first reaction chamber, and the piston rod is close to the second reaction chamber, and the piston head is slidingly connected to the inner wall of the piston cylinder; the end of the piston rod away from the piston head coaxially passes through the piston cylinder and is located in the second reaction chamber, and a dynamic seal is cooperated between the piston head, the piston rod and the piston cylinder, and a slide plate is fixed to the end of the piston rod away from the piston head, and the slide plate is a circular plate, and the slide plate is vertically arranged to the piston rod.

[0010] Preferably, the second reaction chamber is provided with an opening on both sides in the width direction of the rudder blade, each of the openings is hinged with a vortex-eliminating block near one end of the rudder blade, and each opening is hinged with a vortex-eliminating rotating plate far from one end of the rudder blade. The vertical cross-section of the vortex-eliminating block is triangular, and one edge of the vortex-eliminating block abuts against the side of the vortex-eliminating rotating plate near the second reaction chamber; the edge of the slide plate abuts against the inclined surface of the vortex-eliminating block near the piston rod.

[0011] Preferably, a plurality of sliding holes are opened in the horizontal direction in the middle of the arc plate, and a pressure rod with two ends respectively penetrating the first reaction chamber and the second reaction chamber is slidably connected inside each sliding hole, and the sliding holes are evenly arranged in the horizontal direction along both sides of the piston cylinder; the pressure rod is a straight rod whose axis is parallel to the axis of the vortex elimination sliding cylinder, and each pressure rod is located on one side of the second reaction chamber and is fixed with a convex plate, and a telescopic spring is fixed between each convex plate and the arc plate, and the multiple telescopic springs ensure that the ends of the multiple pressure rods are located in the same plane.

[0012] Preferably, a sliding plate and a positioning plate are coaxially arranged on the outer circumference of the piston cylinder, and the sliding plate and the positioning plate are both annular plates. The sliding plate is located between the positioning plate and the arc plate, and the outer annular surface of the positioning plate is fixedly connected to the inner wall of the second reaction chamber, and the inner annular surface of the positioning plate is fixedly connected to the piston cylinder. The sliding plate is slidably connected to the piston cylinder, and a plurality of pressure sensors are fixed on the sliding plate, and the plurality of pressure sensors correspond to pressure rods one by one, respectively, and pressure can be applied to the pressure sensors when the pressure rods are squeezed and slide; a positioning spring is fixed between the sliding plate and the positioning plate, and the positioning spring is used to reset the sliding plate when it is not subjected to external force; a deformation membrane is fixed between the arc plate and the sliding plate, and the deformation membrane is made of elastic rubber, and a closed space is formed between the deformation membrane and the positioning plate to seal the sliding plate inside.

[0013] Preferably, a main control box is fixed to one side of the positioning plate close to the skateboard, and an independent power supply, a processor and a signal transmission module are fixed inside the main control box. The processor, the pressure sensor and the signal transmission module are all powered by an independent power supply. The processor is respectively connected to the pressure sensor and the signal transmission module by signal. After the pressure sensor transmits the pressure information to the processor, the processor controls the signal transmission module to send a signal to the internal control system of the ship.

[0014] Preferably, an air pump is fixed inside the main control box, the air pump is powered by an independent power supply, and the air pump is connected to the processor signal, and the air pump is respectively connected to an air extraction pipe and an air outlet pipe.

[0015] Preferably, the exhaust pipe is away from one end of the air pump and connected to the end of the piston cylinder away from the piston head; the air outlet pipe passes through the positioning plate and is connected to the space between the positioning plate and the deformation membrane, and a vent hole is opened on the sliding plate.

[0016] A method for installing a ship propeller-rudder combined vortex elimination energy-saving device, comprising S1: fixing an end of a vortex elimination drum away from a rudder blade to a base of a propeller on an outer ring of a tail shaft through a pin shaft, so that the vortex elimination drum and the tail shaft rotate synchronously;

[0017] S2: Push one end of the vortex elimination slide cylinder with the sealing rubber ring into the thrust cavity through the opening of the vortex elimination rotor cylinder, so that a dynamic seal is formed between the vortex elimination rotor cylinder and the vortex elimination slide cylinder;

[0018] S3: Gas is filled into the thrust chamber through the air inlet valve, so that the vortex elimination slide cylinder is close to one end of the rudder blade and touches the matching groove. At the same time, the gas inside the first reaction chamber is squeezed, driving the pressing membrane to deform to adapt to the turning of the rudder blade.

[0019] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0020] By arranging a vortex-eliminating rotating cylinder and a vortex-eliminating sliding cylinder, the vortex-eliminating device as a whole is matched with the position of the rudder blade. By pressing the membrane tightly against the matching groove, the gap caused by the angle between the rudder blade and the vortex-eliminating device when the rudder blade turns is filled. This solves the technical problem that the vortex-eliminating device in the prior art will generate a gap when the rudder blade turns, and the vortex in the gap is difficult to eliminate, thereby causing a loss of propulsion force. This achieves the technical effect that the vortex-eliminating device can actively cooperate with the groove on the rudder blade without changing the angle when the rudder blade turns. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the internal structure of the first embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the internal structure of a vortex elimination device according to a first embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the internal structure of the first embodiment of the present invention viewed from above;

[0024] Figure 4 This is a schematic diagram of the state of the rudder blade pressing against the membrane when turning in the first embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the internal structure of the vortex elimination device in a top view according to the second embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the internal structure of the vortex elimination device in a top view according to the third embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of the damage of the abutting film in the third embodiment of the present invention;

[0028] Figure 8 It is a schematic diagram of the expansion of the deformable film when the abutting film is damaged in the fourth embodiment of the present invention.

[0029] In the figure:

[0030] Rudder blade 100; propeller 200; vortex elimination device 300; vortex elimination rotating cylinder 310; thrust chamber 311; intake valve 312; vortex elimination sliding cylinder 320; arc plate 321; first reaction chamber 322; second reaction chamber 323; vortex elimination block 324; vortex elimination rotating plate 325; sealing rubber ring 326; tight membrane 330; piston cylinder 340; piston head 341; piston rod 342; slide plate 343; main control box 350; independent power supply 351; processor 352; signal transmission module 353; air pump 354; exhaust pipe 355; exhaust pipe 356; positioning plate 360; positioning spring 361; sliding plate 370; pressure sensor 371; vent 372; deformation membrane 380; pressure rod 390; telescopic spring 391; convex plate 392; tail shaft 400; matching groove 500; rudder shaft 600. DETAILED DESCRIPTION

[0031] To facilitate the understanding of the present invention, the present application will be described more comprehensively below with reference to the relevant drawings; the drawings show preferred embodiments of the present invention, but the present invention can be implemented in many different forms and is not limited to the embodiments described herein; on the contrary, the purpose of providing these embodiments is to enable a more thorough and comprehensive understanding of the disclosed content of the present invention.

[0032] It should be noted that the terms “vertical”, “horizontal”, “up”, “down”, “left”, “right” and similar expressions used in this document are only for illustrative purposes and do not represent the only implementation method.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs; the terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the term "and / or" used herein includes any and all combinations of one or more related listed items.

[0034] Embodiment 1: Figures 1 to 4 As shown, the present application is a ship propeller-rudder combined vortex elimination energy-saving device, comprising a rudder blade 100, a rudder shaft 600, a propeller 200, a vortex elimination device 300 and a tail shaft 400; the tail shaft 400 is horizontally arranged, the rudder shaft 600 is vertically arranged, the tail shaft 400 and the rudder shaft 600 are respectively connected to the main shaft of the motor built into the tail of the ship, the tail shaft 400 is used to drive the propeller 200 to rotate to form the thrust of the ship, and the rudder shaft 600 is used to control the direction of the rudder blade 100, thereby controlling the steering of the ship; the vortex elimination device 300 is arranged between the propeller 200 and the rudder blade 100;

[0035] The vortex elimination device 300 includes two parts, a vortex elimination slide cylinder 320 and a vortex elimination rotating cylinder 310. Both the vortex elimination slide cylinder 320 and the vortex elimination rotating cylinder 310 are cylindrical. The vortex elimination rotating cylinder 310 is fixedly connected to the tail shaft 400 at one end close to the propeller 200, and an opening is provided at the other end, and the opening is facing the rudder blade 100. A thrust chamber 311 is provided inside the vortex elimination rotating cylinder 310, and the thrust chamber 311 is filled with gas. An air intake valve 312 is fixed on one side of the vortex elimination rotating cylinder 310, and the air intake valve 312 is connected to the internal space of the vortex elimination rotating cylinder 310. The staff can regularly replenish gas to the thrust chamber 311 through the air intake valve 312.

[0036] A matching groove 500 is provided in the middle of the side of the rudder blade 100 close to the propeller 200. One end of the vortex elimination slide cylinder 320 abuts against the matching groove 500, and the other end is slidably connected with the thrust chamber 311 inside the vortex elimination rotary cylinder 310. A sealing rubber ring 326 is fixed to one end of the vortex elimination slide cylinder 320 located in the thrust chamber 311. The sealing rubber ring 326 is made of rubber and is used to prevent air leakage in the thrust chamber 311.

[0037] The interior of the vortex elimination slide cylinder 320 is hollow and one end away from the vortex elimination drum 310 is open, and the opening is covered and fixed with a tightening membrane 330, which is made of elastic rubber, preferably corrosion-resistant chloroprene rubber or nitrile rubber. An arc plate 321 is fixed to one end of the vortex-eliminating slide cylinder 320 near the abutting membrane 330. The arc plate 321 is an arc-shaped plate with the concave surface facing the abutting membrane 330. The arc plate 321 divides the interior of the vortex-eliminating slide cylinder 320 into two independent spaces. The abutting membrane 330 and one side of the arc plate 321 form a first reaction chamber 322, and a second reaction chamber 323 is formed inside the vortex-eliminating slide cylinder 320 on the other side of the arc plate 321. The upper and lower side walls of the first reaction chamber 322 are concave inward toward the arc plate 321, so as to adapt to the turning of the rudder blade 100. The first reaction chamber 322 and the second reaction chamber 323 are both filled with gas, and the abutting membrane 330 is in contact with the matching groove 500. The abutting membrane 330 is deformed under the push of the gas in the first reaction chamber 322, so as to adapt to the shape of the matching groove 500, and the abutting membrane 330 is always close to the matching groove 500 when the rudder blade 100 turns.

[0038] Based on the above-mentioned ship propeller and rudder combined vortex elimination and energy-saving device, the installation method of the ship propeller and rudder combined vortex elimination and energy-saving device of the present application includes:

[0039] S1: The end of the vortex elimination drum 310 away from the rudder blade 100 is fixedly connected to the base of the outer propeller 200 of the tail shaft 400 through a pin, so that the vortex elimination drum 310 and the tail shaft 400 rotate synchronously;

[0040] S2: Push one end of the vortex elimination slide cylinder 320 with the sealing rubber ring 326 into the thrust chamber 311 through the opening of the vortex elimination drum 310, so that a dynamic seal is formed between the vortex elimination drum 310 and the vortex elimination slide cylinder 320;

[0041] S3: Gas is filled into the thrust chamber 311 through the air inlet valve 312, so that the vortex elimination slide cylinder 320 is close to one end of the rudder blade 100 and is in close contact with the matching groove 500. At the same time, the gas inside the first reaction chamber 322 is squeezed, driving the pressing membrane 330 to deform to adapt to the turning of the rudder blade 100.

[0042] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0043] In this embodiment, the vortex elimination device 300 is matched with the position of the rudder blade 100 as a whole by arranging the vortex elimination drum 310 and the vortex elimination sliding drum 320. The gap caused by the angle between the rudder blade 100 and the vortex elimination device 300 when the rudder blade 100 turns is filled by pressing the membrane 330 tightly against the matching groove 500. This solves the technical problem that the vortex elimination device 300 in the prior art will generate a gap when the rudder blade 100 turns, and the vortex in the gap is difficult to eliminate, thereby causing a loss of propulsion force. This achieves the technical effect that the vortex elimination device 300 can actively cooperate with the groove on the rudder blade 100 without changing the angle when the rudder blade 100 turns.

[0044] Embodiment 2: When the first reaction chamber 322 in the above-mentioned embodiment 1 is pressurized during the steering process of the rudder blade 100, it can drive the pressing film 330 to deform, thereby achieving the effect of reducing eddy currents. Since the eddy currents on the rear side of the propeller 200 will cause the water pressure on the periphery of the vortex elimination device 300 to be low, although the eddy currents are weakened, part of the water flow still flows toward the vortex elimination device 300 under the action of the water pressure, consuming part of the thrust, and at the same time causing the vortex elimination slide 320 to be squeezed by the sea water, which may cause the vortex elimination slide 320 to deform over time, thereby making the vortex elimination slide 320 slide unsmoothly; secondly, considering that the pressing film 330 may become loose after long-term use, the contact between the loose pressing film 330 surface and the matching groove 500 may be unstable if it is driven only by the gas inside the first reaction chamber 322. In order to further eliminate the eddy currents and reduce the risk of water flow turbulence caused by the unstable contact between the pressing film 330 and the matching groove 500, it is necessary to improve the device, such as Figure 5 As shown, the specific structure is as follows:

[0045] A piston cylinder 340 coaxially arranged with the vortex elimination slide cylinder 320 is fixed at the center of the arc plate 321, and the piston cylinder 340 includes a piston rod 342 and a piston head 341. The piston cylinder 340 is located in the second reaction chamber 323 as a whole and opens toward the first reaction chamber 322. The piston head 341 is located on the side close to the first reaction chamber 322, and the piston rod 342 is close to the second reaction chamber 323. The piston head 341 is slidably connected to the inner wall of the piston cylinder 340; the end of the piston rod 342 away from the piston head 341 coaxially passes through the piston cylinder 340 and is located in the second reaction chamber 323. The piston head 341, the piston rod 342 and the piston cylinder 340 are dynamically sealed. A slide plate 343 is fixed to the end of the piston rod 342 away from the piston head 341. The slide plate 343 is a circular plate, and the slide plate 343 is vertically arranged with the piston rod 342.

[0046] The second reaction chamber 323 is provided with an opening on both sides of the width direction of the rudder blade 100, each of the openings is hinged with a vortex-eliminating block 324 at one end close to the rudder blade 100, and each opening is hinged with a vortex-eliminating plate 325 at one end away from the rudder blade 100. The vertical cross-section of the vortex-eliminating block 324 is triangular, and one edge of the vortex-eliminating block 324 abuts against the side of the vortex-eliminating plate 325 close to the second reaction chamber 323; the edge of the slide plate 343 abuts against the inclined surface of the vortex-eliminating block 324 close to the piston rod 342.

[0047] The working process and principle in the above-mentioned embodiments of the present application are as follows:

[0048] When the rudder blade 100 rotates, the gas inside the first reaction chamber 322 is compressed, and the gas pushes the piston head 341 to move away from the first reaction chamber 322. The piston head 341 pushes the piston rod 342, and the piston rod 342 drives the slide plate 343. During the sliding process of the slide plate 343, the vortex elimination blocks 324 on both sides are pushed to rotate outwards. The edges of the vortex elimination blocks 324 push the vortex elimination rotating plate 325 to rotate outwards, so that the vortex elimination rotating plate 325 is in the direction of the water flow ( Figure 5 The middle arrow indicates the direction of water flow, wherein the water flow on the side close to the deflection direction of the rudder blade 100 is slower, so the water pressure is greater than the other side), so a slope is formed on the vortex-eliminating plate 325, thereby guiding the water flow to reduce eddy current and enhance thrust; and under the water flow pressure, the vortex-eliminating plate 325 simultaneously gives a reaction force to the vortex-eliminating block 324, so that the slide plate 343 reaches a balanced position under the action of the piston rod 342 and the vortex-eliminating block 324, so that the slope of the vortex-eliminating plate 325 can adapt to the rotation speed of the propeller 200, and at the same time, under the action of the water flow, the vortex-eliminating plate 325 performs work on the piston head 341 through the vortex-eliminating block 324 and the slide plate 343, so that the piston head 341 simultaneously compresses the air inside the first reaction chamber 322, so that the pressing membrane 330 is always tightly attached to the matching groove 500, and will not be excessively deformed in the equilibrium state. Secondly, the water flow around the vortex elimination slide cylinder 320 fills into the second reaction chamber 323, so that the water pressure inside and outside the second reaction chamber 323 is balanced, thereby reducing the possibility of deformation of the vortex elimination slide cylinder 320 and increasing the service life of the vortex elimination slide cylinder 320.

[0049] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0050] In this embodiment, a piston cylinder 340, a slide plate 343, a vortex-eliminating block 324 and a vortex-eliminating plate 325 are provided to achieve a balance between the water pressure generated by the flow of water and the internal air pressure of the first reaction chamber 322, thereby reducing the risk of unstable attachment of the pressing membrane 330 to the matching groove 500, and allowing the water flow to fill the second reaction chamber 323, so that the pressure inside and outside the second reaction chamber 323 is balanced, reducing the risk of deformation of the vortex-eliminating slide cylinder 320.

[0051] Embodiment 3: Considering that the abutting film 330 in the above embodiment 2 may be damaged if it is not replaced and repaired for a long time, and due to the special position of the abutting film 330, the staff often cannot know the condition of the abutting film 330 in the first time during the operation of the ship, in order to remind the staff to repair in time and monitor the steering condition of the rudder blade 100 at the same time, it is necessary to improve the device, such as Figure 6 and Figure 7 As shown, the specific structure is as follows:

[0052] A plurality of sliding holes are provided in the horizontal direction in the middle of the arc plate 321, and a pressure rod 390 is slidably connected inside each sliding hole, and both ends of the pressure rod 390 respectively penetrate the first reaction chamber 322 and the second reaction chamber 323, and the sliding holes are evenly arranged in the horizontal direction on both sides of the piston cylinder 340; the pressure rod 390 is a straight rod whose axis is parallel to the axis of the vortex elimination slide cylinder 320, and each pressure rod 390 is located on one side of the second reaction chamber 323 and is fixed with a convex plate 392, and a telescopic spring 391 is fixed between each convex plate 392 and the arc plate 321, and the plurality of telescopic springs 391 ensure that the ends of the plurality of pressure rods 390 are located in the same plane.

[0053] The outer periphery of the piston cylinder 340 is coaxially provided with a sliding plate 370 and a positioning plate 360. The sliding plate 370 and the positioning plate 360 ​​are both annular plates. The sliding plate 370 is located between the positioning plate 360 ​​and the arc plate 321. The outer annular surface of the positioning plate 360 ​​is fixedly connected to the inner wall of the second reaction chamber 323, and the inner annular surface of the positioning plate 360 ​​is fixedly connected to the piston cylinder 340. The sliding plate 370 is slidably connected to the piston cylinder 340. A plurality of pressure sensors 371 are fixed on the sliding plate 370. The plurality of pressure sensors 371 are fixed on the sliding plate 370. 71 correspond to the pressure rods 390 one by one respectively. When the pressure rods 390 are squeezed and slide, they can apply pressure to the pressure sensor 371. A positioning spring 361 is fixed between the sliding plate 370 and the positioning plate 360. The positioning spring 361 is used to reset the sliding plate 370 when no external force is applied. A deformation membrane 380 is fixed between the arc plate 321 and the sliding plate 370. The deformation membrane 380 is made of elastic rubber. A closed space is formed between the deformation membrane 380 and the positioning plate 360 ​​to seal the sliding plate 370.

[0054] A main control box 350 is fixed to the side of the positioning plate 360 ​​close to the slide plate 343. An independent power supply 351, a processor 352 and a signal transmission module 353 are fixed inside the main control box 350. The processor 352, the pressure sensor 371 and the signal transmission module 353 are all powered by the independent power supply 351. The processor 352 is signal-connected with the pressure sensor 371 and the signal transmission module 353 respectively. After the pressure sensor 371 transmits the pressure information to the processor 352, the processor 352 controls the signal transmission module 353 to send a signal to the internal control system of the ship.

[0055] The working process and principle in the above-mentioned embodiments of the present application are as follows:

[0056] When the pressing film 330 is normal, the rudder blade 100 contacts the pressing film 330 when turning, and pushes the pressure rod 390 inside the first reaction chamber 322, so that the pressure rod 390 at different positions applies different pressure values ​​to the pressure sensor 371 on the sliding plate 370. The pressure values ​​are converted by the processor 352 and sent to the internal control system of the ship by the signal transmission module 353. The internal control system of the ship verifies the data, thereby achieving the effect of real-time monitoring of the steering angle of the rudder blade 100, such as Figure 7 When the pressure membrane 330 is damaged, water flows through the sliding hole, and the water pressure directly acts on the deformable membrane 380. The deformable membrane 380 as a whole exerts pressure on all pressure sensors 371, so that the internal control system of the ship detects abnormal data, thereby feeding back the information that the pressure membrane 330 is damaged.

[0057] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0058] In this embodiment, a pressure rod 390 and a sliding plate 370 are arranged so that one end of the pressure rod 390 cooperates with the pressure membrane 330 and the other end cooperates with the pressure sensor 371, thereby avoiding the risk of damage that cannot be discovered in time when the pressure membrane 330 is not replaced and repaired for a long time, and can simultaneously monitor the steering condition of the rudder blade 100.

[0059] Embodiment 4: Considering that the abutting film 330 in the above-mentioned embodiment 3 is damaged, causing the piston cylinder 340 to be connected to the outside, so that the piston cylinder 340 cannot work normally, and then the vortex elimination plate 325 is difficult to extend outward, thereby reducing the control effect of the vortex. In order to ensure that the vortex elimination device 300 can be used in an emergency after the abutting film 330 fails, it is necessary to improve the device, such as Figure 8 As shown, the specific structure is as follows:

[0060] An air pump 354 is also fixed inside the main control box 350. The air pump 354 is powered by an independent power supply 351, and the air pump 354 is connected to the processor 352 by signal. The air pump 354 is respectively connected to an air extraction pipe 355 and an air outlet pipe 356. The air extraction pipe 355 is connected to an end of the piston cylinder 340 away from the piston head 341 away from the end of the air pump 354. The air outlet pipe 356 passes through the positioning plate 360 ​​and is connected to the space between the positioning plate 360 ​​and the deformation membrane 380. The sliding plate 370 is provided with an air vent 372, so that the air flow in the space between the positioning plate 360 ​​and the deformation membrane 380 is smooth.

[0061] The working process and principle in the above-mentioned embodiments of the present application are as follows:

[0062] When the signal transmission module 353 feeds back the information that the clamping membrane 330 is damaged, the processor 352 controls the air pump 354 to start running. The air pump 354 extracts the gas inside the piston cylinder 340 outward through the exhaust pipe 355, so that the piston head 341 moves toward the second reaction chamber 323, so that the slide plate 343 controls the rotation of the vortex-eliminating block 324 and the vortex-eliminating rotating plate 325; the air pump 354 simultaneously inflates the space between the positioning plate 360 ​​and the deformation membrane 380 through the outlet pipe 356, so that the deformation membrane 380 expands toward the direction of the clamping membrane 330, and at the same time, the deformation membrane 380 pushes the pressure rod 390, so that the pressure rod 390 actively adapts to the position of the matching groove 500 of the rudder blade 100, thereby reducing the generation of eddy currents; the air extraction volume of the air pump 354 in the above process is set by the staff.

[0063] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0064] In this embodiment, an air pump 354 is provided so that the air pump 354, under the control of the processor 352, simultaneously adjusts the amount of gas inside the piston cylinder 340 and the deformation membrane 380, thereby ensuring the emergency use of the vortex elimination device 300 after the pressure membrane 330 fails, thereby reducing the power loss of the ship in the event of a failure.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A ship propeller-rudder combined vortex elimination energy-saving device, comprising a rudder blade (100), a rudder shaft (600), a propeller (200), a vortex elimination device (300) and a tail shaft (400); the tail shaft (400) is arranged horizontally, the rudder shaft (600) is arranged vertically, and the tail shaft (400) is fixedly connected to the propeller (200); the vortex elimination device (300) is arranged between the propeller (200) and the rudder blade (100); characterized in that: The vortex elimination device (300) comprises two parts, namely, a vortex elimination sliding cylinder (320) and a vortex elimination rotating cylinder (310). Both the vortex elimination rotating cylinder (310) and the vortex elimination sliding cylinder (320) are cylindrical. One end of the vortex elimination rotating cylinder (310) close to the propeller (200) is fixedly connected to the tail shaft (400), and the other end is provided with an opening which faces the direction of the rudder blade (100). A thrust chamber (311) is provided inside the vortex elimination rotating cylinder (310), and the thrust chamber (311) is filled with gas. An air intake valve (312) is fixed on one side of the vortex elimination rotating cylinder (310), and the air intake valve (312) is communicated with the internal space of the vortex elimination rotating cylinder (310). A matching groove (500) is provided in the middle of one side of the rudder blade (100) close to the propeller (200); one end of the vortex elimination slide cylinder (320) is in contact with the matching groove (500), and the other end is slidably connected to the thrust chamber (311) inside the vortex elimination rotary cylinder (310); the interior of the vortex elimination slide cylinder (320) is hollow, and one end thereof away from the vortex elimination rotary cylinder (310) is open, and the opening is covered and fixed with a tightening film (330), and the tightening film (330) is made of elastic rubber material.

2. The ship propeller-rudder combined vortex elimination and energy saving device according to claim 1 is characterized in that: A sealing rubber ring (326) is fixed to one end of the vortex elimination slide cylinder (320) located in the thrust chamber (311). The sealing rubber ring (326) is made of rubber and is used to prevent air leakage in the thrust chamber (311). An arc plate (321) is fixed to one end of the vortex elimination slide cylinder (320) near the abutting membrane (330). The arc plate (321) is an arc-shaped plate with a concave surface facing the abutting membrane (330). The arc plate (321) divides the interior of the vortex elimination slide cylinder (320) into two independent spaces. The abutting membrane (330) and the arc plate (321) form a first reaction chamber (322) on one side, and the arc plate (321) on the other side forms a first reaction chamber (322). A second reaction chamber (323) is formed inside the vortex elimination slide cylinder (320), and the upper and lower side walls of the first reaction chamber (322) are concave inwardly toward the arc plate (321), thereby being able to adapt to the turning of the rudder blade (100). The first reaction chamber (322) and the second reaction chamber (323) are both filled with gas, and the abutting membrane (330) is in contact with the matching groove (500). The abutting membrane (330) is deformed under the push of the gas inside the first reaction chamber (322), thereby adapting to the shape of the matching groove (500), and the abutting membrane (330) is always in close contact with the matching groove (500) when the rudder blade (100) turns.

3. The ship propeller-rudder combined vortex elimination and energy saving device according to claim 2 is characterized in that: A piston cylinder (340) coaxially arranged with the vortex elimination slide cylinder (320) is fixed at the center of the arc plate (321). The piston cylinder (340) comprises a piston rod (342) and a piston head (341). The piston cylinder (340) is located in its entirety in the second reaction chamber (323) and opens toward the first reaction chamber (322). The piston head (341) is located on a side close to the first reaction chamber (322). The piston rod (342) is close to the second reaction chamber (323). The piston head (341) is close to the piston rod (342). The piston rod (342) is slidably connected to the inner wall of the cylinder (340); the end of the piston rod (342) away from the piston head (341) coaxially passes through the piston cylinder (340) and is located in the second reaction chamber (323); the piston head (341), the piston rod (342) and the piston cylinder (340) are dynamically sealed; the end of the piston rod (342) away from the piston head (341) is fixed with a slide plate (343); the slide plate (343) is a circular plate, and the slide plate (343) and the piston rod (342) are vertically arranged.

4. The ship propeller-rudder combined vortex elimination and energy saving device according to claim 3 is characterized in that: The second reaction chamber (323) is provided with an opening on both sides of the rudder blade (100) in the width direction, respectively; each of the openings is hingedly connected to a vortex elimination block (324) at one end close to the rudder blade (100); each of the openings is hingedly connected to a vortex elimination plate (325) at one end away from the rudder blade (100); the vertical cross-section of the vortex elimination block (324) is triangular, and an edge of the vortex elimination block (324) abuts against a side of the vortex elimination plate (325) close to the second reaction chamber (323); the edge of the slide plate (343) abuts against an inclined surface of the vortex elimination block (324) close to the piston rod (342).

5. The ship propeller-rudder combined vortex elimination and energy saving device according to claim 4 is characterized in that: A plurality of sliding holes are provided in the horizontal direction in the middle of the arc plate (321), and a pressure rod (390) is slidably connected inside each sliding hole, with both ends respectively penetrating the first reaction chamber (322) and the second reaction chamber (323). The sliding holes are evenly arranged in the horizontal direction along both sides of the piston cylinder (340); the pressure rod (390) is a straight rod whose axis is parallel to the axis of the vortex elimination slide cylinder (320), and each of the pressure rods (390) is fixed with a convex plate (392) on one side of the second reaction chamber (323), and a telescopic spring (391) is fixed between each convex plate (392) and the arc plate (321). The plurality of telescopic springs (391) ensure that the ends of the plurality of pressure rods (390) are located in the same plane.

6. The ship propeller-rudder combined vortex elimination and energy saving device according to claim 5 is characterized in that: A sliding plate (370) and a positioning plate (360) are coaxially arranged on the outer periphery of the piston cylinder (340); the sliding plate (370) and the positioning plate (360) are both annular plates; the sliding plate (370) is located between the positioning plate (360) and the arc plate (321); the outer annular surface of the positioning plate (360) is fixedly connected to the inner wall of the second reaction chamber (323); the inner annular surface of the positioning plate (360) is fixedly connected to the piston cylinder (340); the sliding plate (370) is slidably connected to the piston cylinder (340); a plurality of pressure sensors (371) are fixedly arranged on the sliding plate (370); and the plurality of pressure sensors (371) are The pressure sensors (371) correspond to the pressure rods (390) one by one, and when the pressure rods (390) are squeezed and slide, they can apply pressure to the pressure sensors (371); a positioning spring (361) is fixed between the sliding plate (370) and the positioning plate (360), and the positioning spring (361) is used to reset the sliding plate (370) when no external force is applied; a deformable membrane (380) is fixed between the arc plate (321) and the sliding plate (370), and the deformable membrane (380) is made of elastic rubber material; a closed space is formed between the deformable membrane (380) and the positioning plate (360), and the sliding plate (370) is sealed inside.

7. The ship propeller-rudder combined vortex elimination and energy saving device according to claim 6 is characterized in that: A main control box (350) is fixed to one side of the positioning plate (360) close to the slide plate (343); an independent power supply (351), a processor (352) and a signal transmission module (353) are fixed inside the main control box (350); the processor (352), the pressure sensor (371) and the signal transmission module (353) are all powered by the independent power supply (351); the processor (352) is signal-connected to the pressure sensor (371) and the signal transmission module (353), respectively; after the pressure sensor (371) transmits pressure information to the processor (352), the processor (352) controls the signal transmission module (353) to send a signal to an internal control system of the ship.

8. The ship propeller-rudder combined vortex elimination and energy saving device according to claim 7 is characterized in that: An air pump (354) is also fixed inside the main control box (350). The air pump (354) is powered by an independent power supply (351). The air pump (354) is signal-connected to the processor (352). The air pump (354) is respectively connected to an air extraction pipe (355) and an air outlet pipe (356).

9. The ship propeller-rudder combined vortex elimination and energy saving device according to claim 8, characterized in that: The exhaust pipe (355) is connected to an end of the piston cylinder (340) away from the piston head (341) at one end away from the air pump (354); the exhaust pipe (356) passes through the positioning plate (360) and is connected to the space between the positioning plate (360) and the deformation membrane (380); and a vent hole (372) is provided on the sliding plate (370).

10. A method for installing a ship propeller-rudder combined vortex elimination and energy saving device, characterized in that: The ship propeller-rudder combined vortex elimination energy-saving device according to claim 1 comprises S1: fixing the end of the vortex elimination drum (310) away from the rudder blade (100) to the base of the outer propeller (200) of the tail shaft (400) through a pin shaft, so that the vortex elimination drum (310) and the tail shaft (400) rotate synchronously; S2: Pushing one end of the vortex elimination slide cylinder (320) with the sealing rubber ring (326) into the thrust chamber (311) through the opening of the vortex elimination rotating cylinder (310), so that a dynamic seal is formed between the vortex elimination rotating cylinder (310) and the vortex elimination slide cylinder (320); S3: Gas is filled into the thrust chamber (311) through the air inlet valve (312), so that the end of the vortex elimination slide cylinder (320) close to the rudder blade (100) contacts the matching groove (500), and at the same time, the gas inside the first reaction chamber (322) is squeezed, driving the pressing film (330) to deform to adapt to the steering of the rudder blade (100).

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