Underwater operating double-stator beam flow rim propeller structure

Abstract

The invention provides an underwater running double-stator beam flow rim propeller structure which comprises a guide pipe, the interior of one end of the guide pipe is connected with a front propeller hub, a front propeller hub cap is installed at one end of a propeller shaft, a front deflection stator, a rim transmission device and a rear deflection stator are sequentially installed on the propeller shaft, and the front deflection stator is connected with the front deflection stator. The other end of the conduit is connected with the tail beam tube; the wheel flange transmission device comprises a wheel flange transmission ring, the wheel flange transmission ring is connected with a paddle, and the paddle is installed on the rotor inner shaft. The guide pipe is used as a connecting carrier of the stator, the rim and the beam tube, and the rim transmission device is used as a power source device of the propeller. The front torsion stator plays a role in enabling inflow of the rotor to generate prerotation, the rear torsion stator plays a role in adjusting the torsion angle of the blades according to the fluid speed so as to better absorb wake flow energy, and the beam barrel is used for restraining the wake flow and concentrating pressure at the tail of the propeller on beams in the same direction, so that the effect of improving the propelling efficiency is achieved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of ship power system, and particularly relates to a double-stator beam wheel rim propeller structure for underwater operation. BACKGROUND

[0002] Under the background of modern science and technology, submarines have become an important force for ocean security of various countries due to their excellent concealment. As a core component of the submarine, the performance of the propulsion system directly determines the operation efficiency and survivability of the submarine. With the continuous progress of detection technology, especially the increasing maturity of acoustic detection technology, submarines are facing severe concealment problems. The traditional propeller propulsion method gradually exposes its limitations in reducing noise and improving propulsion efficiency, and it is difficult to meet the underwater operation requirements of submarines in a high-speed and low-noise environment. Under this background, the pump-jet propeller emerges as the times require.

[0003] From the structure, the submarine pump-jet propeller is composed of a ring-shaped guide pipe, a stator and a rotor. The ring-shaped guide pipe can shield noise, the stator can make the rotor flow produce pre-rotation or absorb the rotor tail flow energy, and the rotor produces thrust. According to the front and rear positions of the stator and the rotor, the pump-jet propeller is divided into "front stator type" and "rear stator type", and the former is mostly used in submarines and the latter is mostly used in torpedoes. In terms of research status, the pump-jet propeller has shown many advantages. Compared with the seven-leaf large skew propeller, it has high propulsion efficiency, the stator and the guide pipe can reduce energy loss and improve effective thrust; low radiation noise, the guide pipe shielding and uniform inflow can greatly reduce the low-frequency line spectrum noise and broadband spectrum sound level total noise; and it can effectively delay the generation of blade cavitation and improve the low-noise speed of the submarine.

[0004] However, the pump-jet propeller has complex configuration and structure, high requirements for the cooperation between parts, and great difficulty in design, manufacture and installation; the weight is 2-3 times that of the ordinary propeller, which has a great influence on the trim of the hull, the structural strength and the shaft vibration, and there are problems such as high weight, high cost, high noise caused by cavitation generated by high speed, low propeller efficiency and the like. SUMMARY

[0005] The purpose of the application is to provide a double-stator beam wheel rim propeller structure for underwater operation, which improves the rotation speed of the propeller to reach the target thrust and reduces the volume requirement of the transmission device for the propeller.

[0006] The purpose of the application is achieved by the following technical scheme:

[0007] A double-stator beam wheel rim propeller structure for underwater operation, comprising: a guide pipe, one end of the guide pipe is connected with a front hub cap inside, the front hub cap is installed at one end of a propeller shaft, a front deflection stator, a wheel rim transmission device and a rear deflection stator are installed on the propeller shaft in sequence, and the other end of the guide pipe is connected with a tail beam cylinder.

[0008] The rim drive device comprises a rim drive ring connected with a paddle, and the paddle is installed on a rotor inner shaft.

[0009] Further, the paddle shaft has a bearing groove, and the rotor inner shaft is sleeved on the bearing groove.

[0010] Further, the rotor inner shaft is installed on the bearing groove through a bearing.

[0011] Further, a rear paddle hub cap is installed at the other end of the paddle shaft.

[0012] Further, the guide pipe has a rim clamping groove inside, and the rim drive device is installed in the rim clamping groove.

[0013] Further, the rim clamping groove has a power system connecting hole.

[0014] Further, the inside to outside of the stator blades of the front deflection stator and the rear deflection stator is twisted by an angle of -5-10°.

[0015] Further, the front stator is connected with the paddle shaft through a lock hole and a lock core.

[0016] Further, the rear stator is connected with the paddle shaft through a lock hole and a lock core.

[0017] Further, the tail beam cylinder is connected with the guide pipe through a lock hole and a lock core.

[0018] The beneficial effects of the present application are as follows:

[0019] The present application adopts a beam tube and a rim drive, which improves the rotation speed of the propeller to reach the target thrust, and reduces the volume requirement of the transmission device. Compared with the traditional pump-jet propeller, the propeller reduces the cost, reduces the rotation speed, and improves the efficiency of the propeller.

[0020] The front deflection stator and the rear deflection stator of the present application have twisted stator blades, which can improve flow guiding, reduce flow loss, and suppress vibration and noise by optimizing the pressure distribution of the fluid, thereby improving energy conversion efficiency. And the twisted stator can adjust the blade angle according to the velocity gradient of the fluid to optimize the energy transmission process.

[0021] The present application adopts rim drive instead of paddle shaft drive, which saves the energy loss of the transmission shaft and saves the storage space of the ship / boat, and improves the economy of the whole vehicle. Compared with the traditional propeller blade tip, the rim propeller has an annular shape, which limits the transverse flow of the tip fluid, suppresses the formation of vortex, and improves the propelling efficiency.

[0022] The beam tube of this invention can concentrate the thruster pressure in a single direction, greatly improving thrust performance and reducing unnecessary thrust loss. Furthermore, this structural design can reduce the rotor speed at which the target thrust is achieved, thereby delaying cavitation formation on the rotor surface to some extent and suppressing rotor cavitation noise.

[0023] This invention combines a beam tube and a twisted stator with a rear-mounted twisted structure. The twisted stator adjusts the water flow to a more uniform axial flow, while the beam tube maintains stable water pressure, preventing severe cavitation generation in the propulsion system even at high speeds or under varying operating conditions. This not only reduces the mechanical noise and cavitation noise of the propulsion system but also significantly improves the acoustic stealth of the underwater vehicle. Attached Figure Description

[0024] Appendix Figure 1 This is a schematic diagram of the structure of the present invention;

[0025] Appendix Figure 2 This is the front view of the present invention;

[0026] Appendix Figure 3 This is a schematic diagram of the rim rotor of the present invention;

[0027] Appendix Figure 4 This is a schematic diagram of the structure of the pre-twisted stator of the present invention;

[0028] Appendix Figure 5 This is a schematic diagram of the structure of the rear-twisted stator of the present invention;

[0029] Appendix Figure 6 This is a schematic diagram of the propeller shaft of the present invention;

[0030] Appendix Figure 7 This is a schematic diagram of the structure of the propeller shaft front hub cap of the present invention;

[0031] Appendix Figure 8 This is a structural schematic diagram of a single component, the rear hub cap of the propeller shaft, according to the present invention.

[0032] Appendix Figure 9 This is a schematic diagram of the beam tube structure of the present invention;

[0033] Appendix Figure 10 This is a schematic diagram of the structure of the catheter of the present invention;

[0034] Appendix Figure 11 This is a schematic diagram of the stator blade structure of the present invention.

[0035] In the drawing: 1, tail beam current cylinder, 2, rear deflection stator, 3, front deflection stator, 4, paddle shaft, 5, rim transmission device, 6, front paddle hub cap, 7, rim transmission ring, 8, guide pipe, 9, paddle blade, 10, rotor inner shaft, 11, bearing groove, 12, rear paddle hub cap, 13, rim clamping groove, 14, lock core. DETAILED DESCRIPTION

[0036] The application will be further described below in combination with the drawing.

[0037] The application provides a kind of underwater running double-stator beam rim propeller structure, as shown in the drawing, including: guide pipe 8, one end inside with front paddle hub cap 6 connection, the front paddle hub cap 6 is installed in paddle shaft 4 one end, front deflection stator 3, rim transmission device 5, rear deflection stator 2 are sequentially installed on the paddle shaft 4, the other end of the guide pipe 8 is connected with tail beam current cylinder 1. Figures 1-2 As shown in the drawing, the rim transmission device includes rim transmission ring 7, which is connected with paddle blade 9, which is installed on rotor inner shaft 10, and the rim transmission device is used as the power source device of the propeller.

[0038] Figure 3 As shown in the drawing, the rim transmission device includes rim transmission ring 7, which is connected with paddle blade 9, which is installed on rotor inner shaft 10, and the rim transmission device is used as the power source device of the propeller.

[0039] In this embodiment, first, the front deflection stator 3 performs a flow straightening action on the incoming flow, causing the incoming flow to generate a certain amount of pre-rotation, so that it enters the rotor at an appropriate angle to provide more stable and ideal inflow conditions for the rotor. By optimizing the inflow conditions of the rotor, the energy loss in the flow process is reduced, so that the rotor can more effectively convert energy into thrust when interacting with the water flow, thereby improving the propulsion efficiency of the entire pump-jet propeller and driving the submarine and other equipment to move forward at a higher efficiency. On the other hand, the front stator makes the rotor inflow field more uniform, reducing the pulsating force generated by the rotor during rotation due to uneven water flow, thereby reducing the line spectrum radiation noise of the propeller; and the improvement of the inflow conditions also makes the water flow inside the pump-jet propeller more stable, reducing the unstable flow phenomena such as vortex, further reducing the noise. Finally, as part of the pump-jet propeller structure, the front stator plays the role of fixing the annular guide pipe, keeping the guide pipe in the correct position and posture, ensuring the stability and reliability of the entire pump-jet propeller structure, and ensuring its normal operation.

[0040] ​In this embodiment, the rear twist stator 2 mainly plays a role in absorbing rotational energy and adjusting the direction of thrust. Because the rotor will make the water flow rotate when working, the rear stator can absorb the rotational energy in the rotor wake, convert this part of the energy that would otherwise be lost into useful propulsion energy, improve the overall efficiency of the propeller, and make the propeller more effectively convert the input energy into thrust to push the equipment forward. By reasonably designing the twist angle and shape of the rear stator blade, the direction of the water flow can be fine-tuned, thereby controlling the direction of the thrust generated by the propeller to a certain extent, so that the propeller can better meet the needs of the equipment in different navigation states.

[0041] In this embodiment, the rim transmission device integrates the motor rotor and the propeller, eliminating the gear transmission shaft and its cabin-penetrating and sealing structure in the traditional propulsion system, reducing energy loss in the transmission process, and in the traditional propulsion system, as the propulsion power increases, the main engine power and volume, and the propulsion shaft size will increase, and the shaft length may increase to tens of meters or even hundreds of meters. The rim propeller structure is compact, does not require a long shaft, greatly saves cabin space, and makes the internal space layout of the ship more flexible and reasonable.

[0042] The blade 9 adopts a rim drive mode, and the acute angle edge of the blade is rounded. The inner center of the blade connecting pipe is provided with a bearing corresponding to the bearing groove on the propeller shaft, so that the blade and the propeller shaft are tightly connected, the structure is more stable, and the smooth rotation of the blade is also ensured. Compared with the traditional propeller shaft drive, this rim drive mode reduces the energy loss caused by the vibration of the propeller shaft and the vibration of the blade, and improves the propeller propulsion efficiency. Meanwhile, front and rear streamlined hub heads are respectively installed on the front and rear of the propeller shaft, thereby reducing the influence of the coming flow resistance and having a flow rectifying effect on the wake, so that the propeller can operate more stably.

[0043] As shown in the accompanying Figures 4-5 As shown in the accompanying Figure 11 The inside to outside of the stator blade of the front deflection stator 3 and the rear deflection stator 2 is twisted at an angle of -5-10°, preferably, as shown in the accompanying

[0044] The front stator 3 and the propeller shaft 4 are connected through a lock hole and a lock core 14.

[0045] The rear stator 2 and the propeller shaft 4 are connected through a lock hole and a lock core.

[0046] As shown in the accompanying Figures 6-8As shown, the paddle shaft 4 has a bearing groove 11, and the rotor inner shaft 10 is sleeved on the bearing groove 11.

[0047] The rotor inner shaft 10 is mounted on the bearing groove 11 through a bearing.

[0048] The rear paddle hub cap 12 is mounted on the other end of the paddle shaft 4.

[0049] As shown in the accompanying drawings, Figure 9 As shown, the tail beam cylinder 1 is connected with the guide pipe 8 through a lock hole and a lock core. The guide pipe tail is provided with the beam cylinder, the device can reduce the divergence range of the tail flow, the tail flow is diverged in a fixed area, the pressure concentration area is more evenly distributed, and therefore the influence of the tail flow on the propeller can be reduced and the stability of the propeller can be improved.

[0050] As shown in the accompanying drawings, Figure 10 As shown, the guide pipe 8 has a rim clamping groove 13 inside, the rim transmission device 5 is mounted in the rim clamping groove 13, and the rim clamping groove has a power system connecting hole. The guide pipe is used as a connecting carrier of the stator, the rim and the beam cylinder.

[0051] In the embodiment, the paddle shaft 4, the front paddle hub cap 6 and the rear paddle hub cap 12 are used to guarantee the stability of the propelling device and the fixing effect of the paddle blade, provide a fixed center and direction for the rotation of the propeller or rotor, and guarantee that the propeller or rotor can rotate stably according to the design requirements, so that the direction of the generated thrust or lift is stable.

[0052] In the embodiment, the guide pipe 8, the paddle shaft 4, the front paddle hub cap 6, the rear paddle hub cap 12, the front stator 3, the rear stator 2 and the tail beam cylinder 1 are made of copper alloy materials, and the rim transmission device is made of light metal material and is ceramicized on the surface of the propeller.

[0053] The front torsion stator plays a pre-rotation role for the rotor inflow. The rear torsion stator plays a role in adjusting the blade torsion angle according to the fluid velocity, so as to better absorb the tail flow energy of the rotor. The beam cylinder is used to constrain the tail flow, concentrate the pressure at the tail of the propeller in the same direction beam, so as to play a role in improving the propelling efficiency.

[0054] The installation process of the double-stator beam rim propeller structure of the application is as follows:

[0055] Firstly, the rim transmission device 5 is installed on the bearing groove of the shaft 4 through the bearing, the lock hole of the connecting shaft of the front stator 3 and the rear stator 2 is connected with the lock core of the shaft 4, then the lock hole of the front hub cap 6 and the rear hub cap 12 is connected with the lock core of the shaft 4, then the outer lock hole of the tail beam cylinder 8 is connected with the inner lock core of the tail of the guide pipe, finally the whole connected rim transmission device 5 is put into the rim clamping groove of the guide pipe, thereby the installation of the whole structure is completed.

[0056] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A twin-stator, beam- hub propulsor configuration for underwater operation, characterized by, It includes: A conduit (8) is connected with a front propeller hub cap (6) inside one end of the conduit (8), the front propeller hub cap (6) is installed on one end of a propeller shaft (4), the propeller shaft (4) is sequentially installed with a front deflection stator (3), a rim transmission device (5), and a rear deflection stator (2), the other end of the conduit (8) is connected with a tail beam cylinder (1); The rim transmission device includes a rim transmission ring (7), the rim transmission ring is connected with a propeller blade (9), and the propeller blade (9) is installed on a rotor inner shaft (10).

2. The underwater running double stator beam skirt propeller structure according to claim 1, characterized in that, The propeller shaft (4) is provided with a bearing groove (11), and the rotor inner shaft (10) is sleeved on the bearing groove (11).

3. The underwater running double stator beam-jet- hub-propeller structure according to claim 1 or 2, characterized in that, The rotor inner shaft (10) is installed on the bearing groove (11) through a bearing.

4. The underwater running double stator beam skirt propeller structure according to claim 3, characterized in that, The other end of the propeller shaft (4) is installed with a rear propeller hub cap (12).

5. The underwater running double stator beam skirt propeller structure according to claim 4, characterized in that, The conduit (8) is provided with a rim clamping groove (13) inside, and the rim transmission device (5) is installed in the rim clamping groove (13).

6. An underwater running double stator beam-jet rim propeller structure according to claim 4 or 5, characterized in that, The rim clamping groove is provided with a power system connecting hole.

7. The underwater running double stator beam-juke rim propulsor structure according to claim 6, characterized in that, The inside of the stator blade of the front deflection stator (3) and the rear deflection stator (2) is gradually twisted by an angle of -5-10° from inside to outside.

8. The underwater running double stator beam skirt propeller structure according to claim 7, characterized in that, The front stator (3) is connected with the propeller shaft (4) through a lock hole and a lock core (14).

9. The underwater running double stator beam-jet- hub-propulsor structure according to claim 7, characterized in that, The rear stator (2) is connected with the propeller shaft (4) through a lock hole and a lock core.

10. The underwater running double stator beam-jet- hub-propulsor structure according to claim 7, characterized in that, The tail beam cylinder (1) is connected with the conduit (8) through a lock hole and a lock core.

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