Front prerotation guide wheel structure and mounting method thereof

Abstract

The invention discloses a front prerotation guide wheel structure and a mounting method thereof.The front prerotation guide wheel structure is characterized in that a plurality of guide vanes are fixedly connected to the inner surface of an annular guide pipe, an inner pipe is arranged in the annular guide pipe, a protection pipe is fixedly connected to the front surface of the annular guide pipe, and fixing blocks are fixedly connected to the outer surfaces of the annular guide pipe and the protection pipe; an annular groove is formed in the outer pipe, three rotating shafts are rotationally connected to the inner surface of the annular groove, flow guide fixing pieces are fixedly connected to the outer surfaces of the rotating shafts, rotating shafts are rotationally connected to the flow guide fixing pieces, attaching pieces are fixedly connected to the outer surfaces of the rotating shafts, a plurality of bolts are in threaded connection to the attaching pieces, and small flow pieces are fixedly connected to the inner surface of the inner pipe. The device can be conveniently installed on a ship body, resistance in water is reduced, power consumption is reduced, impact force on the pre-rotating guide wheel is reduced, therefore, the service life of the pre-rotating guide wheel is prolonged, the pre-rotating effect is improved, the overall structure is simple, and later maintenance is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of pre-rotation guide wheel structures, and in particular to a front pre-rotation guide wheel structure and a mounting method thereof. Background Art

[0002] At present, energy conservation and emission reduction of ships have become an urgent need for ship research institutes, design institutes, shipyards and ship owners. In the shipbuilding industry, there is a huge market for ship hydrodynamic energy-saving appendages. Energy-saving devices in the form of guide wheel main body usually have a full duct or half duct, with a number of guide vanes arranged inside, and some guide vanes extend outward to the outside of the duct. The duct can play a role in rectifying the incoming flow in front of the stern propeller, and the guide vanes play a role in pre-swirling the water flow.

[0003] The existing pre-swirl guide wheel provides the maximum pre-swirl effect by changing the angle of the guide blades. However, this method has a relatively complex structure, is not convenient for installing the pre-swirl guide wheel on the hull, and is relatively cumbersome to maintain later. The pre-swirl guide wheel is in water for a long time, and the complex internal transmission components may be corroded, thereby causing damage to the transmission components. In addition, it is easy to cause damage to the pre-swirl guide wheel due to long-term exposure to large impact forces. Summary of the invention

[0004] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art, and to provide a pre-prespin guide wheel structure and an installation method thereof. The hollow outer tube, the rotation axis, the fitting sheet and the bolts make it easy to install the device on the hull, and the hollow outer tube can reduce the resistance in the water and reduce the power consumption. The protective tube and the equipment inside it can reduce the impact force on the prespin guide wheel, thereby increasing the service life of the prespin guide wheel. The inner tube and the small flow sheet are provided to increase the prespin effect without affecting the prespin effect of the guide blade. The overall structure is simple and convenient for later maintenance.

[0005] The present invention also provides a front pre-rotation guide wheel structure as described above, comprising: an annular duct, the inner surface of the annular duct is fixedly connected to a plurality of guide vanes, an inner tube is arranged inside the annular duct, the inner tube is fixedly connected to the guide vanes, the front surface of the annular duct is fixedly connected to a protective tube, the outer surfaces of the annular duct and the protective tube are fixedly connected to a fixing block, the fixing block is fixedly connected to an outer tube, an annular groove is arranged on the outer tube, the inner surface of the annular groove is rotatably connected to three rotating shafts, the outer surface of the rotating shaft is fixedly connected to a guide fixing sheet, the guide A rotating shaft is rotatably connected to the fixed plate, a fitting plate is fixedly connected to the outer surface of the rotating shaft, a plurality of bolts are threadedly connected to the fitting plate, a small flow sheet is fixedly connected to the inner surface of the inner tube, and the above device is convenient for installing the device on the hull, thereby reducing the resistance in the water and the power consumption, and reducing the impact force on the pre-spin guide wheel by protecting the tube and the equipment inside it, thereby increasing the service life of the pre-spin guide wheel, and by arranging the inner tube and the small flow sheet, the pre-spin effect is increased without affecting the pre-spin effect of the guide blade, and the overall structure is simple, which is convenient for later maintenance.

[0006] According to a front pre-rotation guide wheel structure provided by the present invention, the included angle between the guide vane and the annular duct is thirty degrees, and a flow-breaking piece is fixedly connected to the upper surface of the guide vane.

[0007] According to a front pre-rotation guide wheel structure provided by the present invention, a cavity is provided on the protection tube.

[0008] According to a front pre-rotation guide wheel structure provided by the present invention, two baffles are fixedly connected to the inner surface of the cavity, the area of ​​the baffles is equal to two-thirds of the top area of ​​the protection tube, and the two baffles are arranged in a staggered manner.

[0009] According to a front pre-spin guide wheel structure provided by the present invention, a plurality of flow plates and mounting rings are fixedly connected to the inner surface of the cavity, and the flow plates are fixedly connected to the mounting ring.

[0010] According to a front pre-rotation guide wheel structure provided by the present invention, a movable plate is rotatably connected to the mounting ring, a through hole is provided on the protection tube, and the movable plate is gap-matched with the through hole.

[0011] According to a front pre-rotation guide wheel structure provided by the present invention, the upper surface of the movable plate is fixedly connected with a hanging block, the hanging block has a special shape, the lower surface of the movable plate is fixedly connected with a supporting block, and the supporting block is movably connected to the protective tube.

[0012] According to a front pre-rotation guide wheel structure provided by the present invention, a top buffer plate is fixedly connected to the front surface of the protection tube, a leakage hole is arranged on the top buffer plate, and the top buffer plate is funnel-shaped.

[0013] A method for installing a front pre-rotation guide wheel comprises the following steps: S1. Cleaning: Clean the guide vanes, the hanging blocks inside the protection tube, and the top buffer plate; S2. Connecting: insert the guide vane into the annular conduit, connect the inner tube to the annular conduit, butt the annular conduit, the protective tube and the outer tube, and fix the three together by welding; S3, inspection, check the connection of each component inside the annular conduit, and then check the connection between the annular conduit, the protection tube, the fixing block and the outer tube. After the inspection is completed, put it into water for testing; S4. Install and fix. Connect the fitting piece to the hull and place it in front of the propeller. Fix the fitting piece to the hull through bolts. The three guide fixing pieces limit each other to fix the whole piece. Beneficial Effects

[0014] Compared with the prior art, the front pre-rotation guide wheel structure and the installation method thereof facilitate installation of the device on the hull through the hollow outer tube, the rotating shaft, the fitting sheet and the bolts, and the hollow outer tube can reduce the resistance in the water and reduce the power consumption.

[0015] Compared with the prior art, the pre-spin guide wheel structure and the installation method thereof reduce the impact force on the pre-spin guide wheel by protecting the tube and the equipment inside it, thereby increasing the service life of the pre-spin guide wheel. By arranging an inner tube and a small flow sheet, the pre-spin effect is increased without affecting the pre-spin effect of the guide blades. The overall structure is simple and convenient for later maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described below in conjunction with the accompanying drawings and embodiments; Figure 1 It is an overall structural diagram of the front pre-rotation guide wheel structure and the installation method thereof of the present invention; Figure 2 It is a longitudinal cross-sectional structural diagram of the front pre-rotation guide wheel structure and the installation method thereof of the present invention; Figure 3 It is a cross-sectional structural diagram of the front pre-rotation guide wheel structure and the installation method thereof of the present invention; Figure 4 It is a cross-sectional right view of the front pre-rotation guide wheel structure and the installation method thereof of the present invention; Figure 5 It is a cross-sectional top view of the front pre-rotation guide wheel structure and the installation method thereof of the present invention; Figure 6 The figure is a flow chart of the front pre-rotation guide wheel structure and the installation method thereof of the present invention.

[0017] Legend: 1. Annular duct; 2. Guide vane; 3. Inner tube; 4. Annular groove; 5. Rotating shaft; 6. Guide fixing plate; 7. Rotating shaft; 8. Fitting plate; 9. Bolt; 10. Flow-breaking plate; 11. Protective tube; 12. Baffle; 13. Flow plate; 14. Mounting ring; 15. Through hole; 16. Movable plate; 17. Hanging block; 18. Support block; 19. Top buffer plate; 20. Leakage hole; 21. Fixing block; 22. Outer tube; 23. Small flow sheet. DETAILED DESCRIPTION

[0018] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0019] Reference Figure 1-6 The embodiment of the present invention provides a front pre-swirl guide wheel structure, which includes: an annular duct 1, which is used to connect the guide blades 2, a plurality of guide blades 2 are fixedly connected to the inner surface of the annular duct 1, the angle between the guide blades 2 and the annular duct 1 is thirty degrees, a flow-breaking piece 10 is fixedly connected to the upper surface of the guide blade 2 to increase the effect of swirl, an inner tube 3 is arranged inside the annular duct 1, which is used to connect the guide blades 2 and the small flow piece 23, the inner tube 3 is fixedly connected to the guide blade 2, a protective tube 11 is fixedly connected to the front surface of the annular duct 1, which is used to protect the annular duct 1, and a fixing block 21 is fixedly connected to the outer surfaces of the annular duct 1 and the protective tube 11 for connecting The outer tube 22 is fixedly connected to the fixed block 21 for supporting the internal parts. The outer tube 22 is provided with an annular groove 4 for installing the rotating shaft 5. The inner surface of the annular groove 4 is rotatably connected with three rotating shafts 5 for connecting the guide fixing plate 6. The outer surface of the rotating shaft 5 is fixedly connected with the guide fixing plate 6 for connecting the rotating shaft 7. The guide fixing plate 6 is rotatably connected with the rotating shaft 7 for connecting the fitting plate 8. The outer surface of the rotating shaft 7 is fixedly connected with the fitting plate 8 for connecting the hull. The fitting plate 8 is threaded with multiple bolts 9 for fixing the fitting plate 8 to the hull. The inner surface of the inner tube 3 is fixedly connected with a small flow plate 23 for increasing the swirl effect.

[0020] The protective tube 11 is provided with a cavity for connecting a baffle 12. Two baffles 12 are fixedly connected to the inner surface of the cavity for blocking water flow and reducing impact force. The area of ​​the baffle 12 is equal to two-thirds of the top area of ​​the protective tube 11. The two baffles 12 are arranged alternately. A plurality of popular plates 13 and mounting rings 14 are fixedly connected to the inner surface of the cavity for fixing the mounting ring 14. The popular plates 13 are fixedly connected to the mounting ring 14. A movable plate 16 is rotatably connected to the mounting ring 14 for connecting a hanging block 17. A through hole 15 is provided on the protective tube 11 for When the movable plate 16 is extended, the movable plate 16 and the through hole 15 are loosely matched. A hanging block 17 is fixedly connected to the upper surface of the movable plate 16. The hanging block 17 has a special shape and is used to block seaweed and other debris to avoid damaging the propeller of the hull. A supporting block 18 is fixedly connected to the lower surface of the movable plate 16 for supporting the movable plate 16. The supporting block 18 is movably connected to the protective tube 11. A top buffer plate 19 is fixedly connected to the front surface of the protective tube 11. A leakage hole 20 is provided on the top buffer plate 19. The top buffer plate 19 is funnel-shaped and buffers the water flow.

[0021] A method for installing a front pre-rotation guide wheel comprises the following steps: S1, cleaning, cleaning the guide vane 2 and the hanging block 17 and the top buffer plate 19 inside the protection tube 11; S2, connecting, inserting the guide vane 2 into the annular conduit 1, and simultaneously connecting the inner tube 3 with the annular conduit 1, butting the annular conduit 1, the protective tube 11, and the outer tube 22, and fixing the three together by welding; S3, inspection, check the connection of each component inside the annular conduit 1, and then check the connection between the annular conduit 1, the protection tube 11, the fixing block 21 and the outer tube 22. After the inspection is completed, put it into water for testing; S4, installation and fixing, connecting the bonding sheet 8 to the hull and locating it in front of the propeller, fixing the bonding sheet 8 to the hull through bolts 9, and the three guide fixing sheets 6 limit each other to fix the whole.

[0022] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A front pre-rotation guide wheel structure, characterized in that: include: An annular duct (1), wherein a plurality of guide vanes (2) are fixedly connected to the inner surface of the annular duct (1), an inner tube (3) is arranged inside the annular duct (1), the inner tube (3) is fixedly connected to the guide vanes (2), the front surface of the annular duct (1) is fixedly connected to a protective tube (11), the outer surfaces of the annular duct (1) and the protective tube (11) are fixedly connected to a fixing block (21), an outer tube (22) is fixedly connected to the fixing block (21), an annular groove (4) is arranged on the outer tube (22), the inner surface of the annular groove (4) is rotatably connected to three rotating shafts (5), the outer surface of the rotating shaft (5) is fixedly connected to a guide fixing sheet (6), the guide fixing sheet (6) is rotatably connected to a rotating shaft (7), the outer surface of the rotating shaft (7) is fixedly connected to a bonding sheet (8), a plurality of bolts (9) are threadedly connected to the bonding sheet (8), and a small flow sheet (23) is fixedly connected to the inner surface of the inner tube (3).

2. A pre-rotation guide wheel structure according to claim 1, characterized in that: The included angle between the guide vane (2) and the annular duct (1) is thirty degrees, and a flow-breaking piece (10) is fixedly connected to the upper surface of the guide vane (2).

3. A pre-rotation guide wheel structure according to claim 1, characterized in that: The protection tube (11) is provided with a cavity.

4. A pre-rotation guide wheel structure according to claim 3, characterized in that: Two baffles (12) are fixedly connected to the inner surface of the cavity, the area of ​​the baffles (12) is equal to two thirds of the top area of ​​the protection tube (11), and the two baffles (12) are arranged in a staggered manner.

5. The pre-rotation guide wheel structure according to claim 3, characterized in that: A plurality of flow plates (13) and mounting rings (14) are fixedly connected to the inner surface of the cavity, and the flow plates (13) and mounting rings (14) are fixedly connected.

6. A pre-rotation guide wheel structure according to claim 5, characterized in that: A movable plate (16) is rotatably connected to the mounting ring (14), a through hole (15) is provided on the protection tube (11), and the movable plate (16) is clearance-matched with the through hole (15).

7. A pre-rotation guide wheel structure according to claim 6, characterized in that: The upper surface of the movable plate (16) is fixedly connected to a hanging block (17), the hanging block (17) having a special shape, and the lower surface of the movable plate (16) is fixedly connected to a supporting block (18), the supporting block (18) being movably connected to the protective tube (11).

8. The pre-rotation guide wheel structure according to claim 1, characterized in that: A top buffer plate (19) is fixedly connected to the front surface of the protection tube (11), a leak hole (20) is provided on the top buffer plate (19), and the top buffer plate (19) is funnel-shaped.

9. A method for installing a pre-rotation guide wheel according to claim 1, comprising the following steps: S1, cleaning: cleaning the guide vane (2) and the hanging block (17) and the top buffer plate (19) inside the protection tube (11); S2, connecting, inserting the guide vane (2) into the interior of the annular duct (1), and simultaneously connecting the inner tube (3) and the annular duct (1) together, butting the annular duct (1), the protective tube (11), and the outer tube (22), and fixing the three together by welding; S3, testing, checking the connection of the various components inside the annular conduit (1), and then checking the connection between the annular conduit (1), the protection tube (11), the fixing block (21) and the outer tube (22). After the inspection is completed, put it into water for testing; S4. Install and fix. Connect the fitting sheet (8) to the hull and place it in front of the propeller. Fix the fitting sheet (8) to the hull by means of bolts (9). The three guide fixing sheets (6) are mutually limited to fix the whole.

Images