Ship propeller energy-saving rectifying device with flow guide wings

Abstract

The invention discloses a ship propeller energy-saving rectifying device with diversion wings, and particularly relates to the technical field of ships, the ship propeller energy-saving rectifying device comprises a ship body, a driving rod is arranged at the rear end of the ship body, a propeller is arranged at the rear end of the driving rod, and a plurality of diversion wings are fixedly installed on the outer wall of the driving rod in an annular array mode. An L-shaped fixing support is arranged above the driving rod, the L-shaped fixing support is installed on the rear side of the ship body, a rectifying mechanism is installed at the bottom end of the vertical position of the L-shaped fixing support, the rectifying mechanism comprises an annular flow guide cover, and the propeller is located on the inner side of the annular flow guide cover. According to the ship propeller energy-saving rectifying device with the flow guide wings, through the synergistic effect of the flow guide wings and the rectifying mechanism capable of being dynamically adjusted, the inflow condition of the disc face of the propeller is improved, pre-rotation and non-uniformity of water flow are effectively weakened, and therefore the propelling efficiency of the propeller is improved, and fuel consumption and operation cost are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of ship technology, in particular to a ship propeller energy-saving fairing device with guide vanes. BACKGROUND

[0002] The propulsion efficiency of a ship directly affects its fuel consumption and operating costs. The ship propeller, as the main propulsion component, its working efficiency depends largely on the flow quality at the propeller disc surface. Ideally, the propeller should work in a uniform, stable and parallel to the shaft water flow. However, in the actual ship, due to the limitations of the ship tail line type and the influence of rudder, bilge keel and other appendages, the flow at the propeller disc surface usually exists uneven circumferential velocity and rotational component. This uneven, rotating flow will lead to a series of problems such as propeller propulsion efficiency decline, cavitation phenomenon aggravation, vibration and noise increase, etc. The existing technical solutions are to install fixed guide fins or fairing fins at the stern or in front of the propeller, which guide the flow through a number of fins fixed on the hull. The existing technology has the following problems:

[0003] Although the existing device can improve the flow field to some extent, its structure is usually simple, the installation angle and shape of the guide fin are fixed, and it is difficult to accurately and efficiently fair the complex, three-dimensional rotating propeller pre-swirl. The fairing effect is often limited to a local area, and may generate additional resistance due to improper matching in some working conditions, resulting in unstable energy-saving effect. SUMMARY

[0004] The main purpose of the present application is to provide a ship propeller energy-saving fairing device with guide vanes, which can effectively solve the problem that the existing fixed guide fin is difficult to accurately and efficiently dynamically fair the complex propeller pre-swirl, and is easy to cause additional resistance due to fixed structure, unstable energy-saving effect, and the problem that the inner wall of the fairing device is easy to attach debris affecting long-term performance.

[0005] To achieve the above purpose, the technical scheme adopted by the present application is:

[0006] The utility model provides a kind of energy-saving fairing device of ship propeller with guide vane, including ship body, the rear end of the ship body is provided with driving rod, the rear end of the driving rod is provided with propeller, the outer wall annular array of the driving rod is fixedly installed with several guide vanes, the top of the driving rod is provided with L type fixed support, the L type fixed support is installed in the rear side of ship body, the vertical bottom end of the L type fixed support is installed with fairing mechanism, the fairing mechanism includes annular fairing, the inner side of the annular fairing is located propeller, the outer wall of the annular fairing is provided with bearing groove, the inner side of the bearing groove is installed with rotating bearing, the outer wall of the rotating bearing is fixedly installed with several inclined side wing plates, several the inclined side wing plates are all attached to the outer wall of annular fairing, can be rotated by rotating bearing, the front end of the inclined side wing plate is fixedly installed with C type connecting plate, the lower horizontal rear end of the C type connecting plate extends to the inner cavity of annular fairing and is fixedly installed with auxiliary fairing paddle.

[0007] Preferably, several the auxiliary fairing paddle are all located in the front side of guide vane, for rotating auxiliary water flow into annular fairing, while the inclined side wing plate suffers strong lateral ocean current, can assist auxiliary fairing paddle to rotate.

[0008] Preferably, the rear end of several the auxiliary fairing paddle is fixedly installed with scraper, and the scraper is located in the side of guide vane away from driving rod.

[0009] Preferably, the side of several the scraper away from auxiliary fairing paddle is provided with mounting groove, the inner side of the mounting groove is fixedly installed with cleaning scraper, and the cleaning scraper is attached to the inner ring of annular fairing.

[0010] Preferably, the inclined side wing plate is symmetrically distributed with the axis of driving rod as center.

[0011] Preferably, the scraper is made of wear-resistant composite material, and is detachably connected with auxiliary fairing paddle by bolt; the cross section of the scraper is trapezoidal structure, and the width thereof is matched with the inner ring width of annular fairing, so as to ensure the close attachment and effective cleaning of cleaning scraper and annular fairing inner wall.

[0012] Compared with prior art, the utility model has the following beneficial effects:

[0013] 1、The utility model provides a kind of energy-saving fairing device of ship propeller with guide vane, by setting up guide vane and the fairing mechanism of dynamic adjustment cooperation, improve the inflow condition of propeller disc surface, effectively weaken the pre-rotation and unevenness of water flow, to improve the propelling efficiency of propeller, reduce fuel consumption and operating cost.

[0014] 2, The invention provides a kind of ship propeller energy-saving fairing device with guide vane, utilize the scraper and clean scraping strip structure of auxiliary fairing back end of paddle, realize the automatic cleaning function of annular fairing inner wall, effectively prevent marine organisms or sundries attachment, keep flow passage unobstructed, ensure that fairing effect is durable and stable, reduce maintenance frequency and operating cost. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the overall structure schematic diagram of the present application;

[0016] Figure 2 It is the fairing mechanism section schematic diagram of the present application;

[0017] Figure 3 It is the fairing mechanism structure schematic diagram of the present application;

[0018] Figure 4 It is the annular fairing inner cavity structure schematic diagram of the present application;

[0019] Figure 5 It is the scraper structure schematic diagram of the present application.

[0020] In the figure: 1, ship body;11, drive rod;111, guide vane;12, propeller;2, L type fixed support;3, fairing mechanism;31, annular fairing;32, bearing groove;33, rotating bearing;34, inclined side wing plate;35, C type connecting plate;36, auxiliary fairing paddle;361, scraper;3611, installation groove;3612, clean scraping strip. DETAILED DESCRIPTION

[0021] To make the technical means, creative features, purposes and effects of the present application easy to understand, the following will be further described in combination with specific embodiments.

[0022] As Figure 1As shown, the present application provides a ship propeller energy-saving fairing device with guide vanes, comprising a ship body 1, the rear end of the ship body 1 is provided with a drive rod 11, the rear end of the drive rod 11 is installed with a propeller 12, the outer wall of the drive rod 11 is fixedly installed with a plurality of guide vanes 111 in an annular array, the guide vanes 111 are used for preliminarily guiding water flow and reducing vortex generation, the number of the guide vanes 111 is preferably 4, which are uniformly distributed along the circumference of the drive rod 11, the blades thereof are arc-shaped, and the angle between the blades and the axis of the drive rod 11 is 15-25 degrees, so as to effectively guide water flow and reduce vortex generation, the guide vanes 111 and the drive rod 11 are fixed by welding or bolts to ensure the structural strength, the upper side of the drive rod 11 is provided with an L-shaped fixed support 2, the L-shaped fixed support 2 is fixedly installed on the rear side of the ship body 1, the L-shaped fixed support 2 is connected with the tail structure of the ship body 1 by welding or bolts, and a reinforcing rib is arranged between the vertical section and the horizontal section of the L-shaped fixed support 2 to enhance the stability and anti-vibration capability of the support, and the vertical section of the L-shaped fixed support 2 is installed with a fairing mechanism 3 at the bottom end thereof.

[0023] The fairing mechanism 3 comprises an annular fairing 31, the propeller 12 is located on the inner side of the annular fairing 31, the outer wall of the annular fairing 31 is provided with a bearing groove 32, a rotating bearing 33 is installed in the bearing groove 32, the rotating bearing 33 is a sealed rolling bearing made of stainless steel or ceramic material, and is filled with waterproof lubricating grease in the inside to adapt to underwater environment and reduce friction resistance, a plurality of inclined side wing plates 34 are fixedly installed on the outer wall of the rotating bearing 33, the inclined side wing plates 34 are symmetrically distributed with the axis of the drive rod 11 as the center and are attached to the outer wall of the annular fairing 31, the angle between the inclined side wing plates 34 and the axis of the drive rod 11 is 20-40 degrees, preferably 30 degrees, when impacted by lateral water flow, the inclined side wing plates 34 can rotate ±60 degrees around the rotating bearing 33 to adapt to the change of water flow direction, the front end of the inclined side wing plates 34 is fixedly installed with a C-shaped connecting plate 35, the lower horizontal section of the C-shaped connecting plate 35 extends backward to the inner cavity of the annular fairing 31 and is fixedly installed with an auxiliary fairing vane plate 36.

[0024] As shown in Figure 2 and Figure 3 The auxiliary fairing vane plate 36 is located on the front side of the guide vane 111 and is used for assisting water flow to enter the annular fairing 31 when rotating, the auxiliary fairing vane plate 36 is a slightly curved blade structure, the number of which is consistent with that of the inclined side wing plates 34, and the surface thereof is smooth to reduce water flow resistance, the rotation of the auxiliary fairing vane plate 36 can accelerate water flow to enter the annular fairing 31 and destroy pre-swirl, thereby improving the inflow uniformity of the propeller 12, when the inclined side wing plates 34 are subjected to strong lateral ocean current, the rotating bearing 33 can be rotated to drive the auxiliary fairing vane plate 36 to rotate, thereby realizing dynamic adjustment of water flow.

[0025] As shown in Figure 4 and Figure 5As shown, the rear end of the auxiliary rectification vane plate 36 is fixedly provided with a scraper 361 located on the side of the flow guide wing 111 away from the drive rod 11, and the side of the scraper 361 away from the auxiliary rectification vane plate 36 is provided with a mounting groove 3611, and a cleaning scraper 3612 is fixedly installed in the mounting groove 3611, which is tightly attached to the inner ring of the annular flow guide cover 31 and is used for removing sundries attached to the inner wall of the annular flow guide cover 31, and the cleaning scraper 3612 is made of wear-resistant elastic material such as polyurethane or rubber and is fixed in the mounting groove 3611 by buckling or gluing, and is regularly checked and replaced to ensure the cleaning effect, and the inner wall of the annular flow guide cover 31 can be coated with an anti-fouling coating to reduce the accumulation of attachments.

[0026] The scraper 361 is made of wear-resistant composite material and is detachably connected to the auxiliary rectification vane plate 36 by bolts, which is convenient for maintenance and replacement, and the cross section of the scraper 361 is trapezoidal structure, and the width thereof matches the width of the inner ring of the annular flow guide cover 31, so that the cleaning scraper 3612 can effectively clean the inner wall of the annular flow guide cover 31.

[0027] The working principle of the ship propeller energy-saving rectification device with a flow guide wing will be described below.

[0028] As shown in the figure, Figures 1-5 When working, the water flows to the propeller 12 through the tail of the ship body during the forward movement of the ship, the flow guide wing 111 on the drive rod 11 preliminarily guides the water flow, reduces the rotating component of the water flow, and makes the water flow more uniformly to the propeller 12, at the same time, the water flow acts on the inclined side wing plate 34 to make it self-adaptively adjust the angle under the support of the rotating bearing 33, and drives the auxiliary rectification vane plate 36 to rotate, and the rotation of the auxiliary rectification vane plate 36 further guides the water flow to enter the inside of the annular flow guide cover 31 stably and uniformly, improves the inflow condition of the propeller 12, and improves the propulsion efficiency, when encountering lateral ocean current or uneven water flow, the inclined side wing plate 34 automatically deflects through the rotating bearing 33 to drive the auxiliary rectification vane plate 36 to rotate cooperatively, realizes dynamic rectification of the water flow, and reduces energy loss, in addition, the scraper 361 at the rear end of the auxiliary rectification vane plate 36 and the cleaning scraper 3612 follow the movement to continuously scrape the attachments such as seaweed and shells on the inner wall of the annular flow guide cover 31, keep the flow passage unobstructed, and ensure that the rectification effect is durable and stable; as described above, the cooperation of the flow guide wing 111, the inclined side wing plate 34, the auxiliary rectification vane plate 36 and the cleaning structure improves the propulsion efficiency of the propeller, reduces fuel consumption and operating cost, and has the self-cleaning function, which is suitable for various navigation conditions.

[0029] The above shows and describes the basic principles and main features of the present application and the advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A propeller energy-saving fairing device with a flow guide wing for a ship, comprising a ship body (1), a driving rod (11) is arranged at the rear end of the ship body (1), and a propeller (12) is arranged at the rear end of the driving rod (11), characterized in that: The outer wall annular array of the driving rod (11) is fixedly installed with several guide vanes (111), the upper portion of the driving rod (11) is provided with an L-shaped fixed support (2), the L-shaped fixed support (2) is installed on the rear side of the ship body (1), the vertical bottom end of the L-shaped fixed support (2) is installed with a flow regulation mechanism (3), the flow regulation mechanism (3) comprises an annular flow guide cover (31), the propeller (12) is located on the inner side of the annular flow guide cover (31), the outer wall of the annular flow guide cover (31) is provided with a bearing groove (32), the inner side of the bearing groove (32) is installed with a rotating bearing (33), the outer wall of the rotating bearing (33) is fixedly installed with several inclined side wing plates (34), the several inclined side wing plates (34) are all attached to the outer wall of the annular flow guide cover (31) and can rotate by means of the rotating bearing (33), the front end of the inclined side wing plate (34) is fixedly installed with a C-shaped connecting plate (35), the lower horizontal rear end of the C-shaped connecting plate (35) extends to the inner cavity of the annular flow guide cover (31) and is fixedly installed with an auxiliary flow regulation paddle plate (36).

2. A ship propeller energy saving duct device with guide vanes according to claim 1, characterized in that: The several auxiliary flow regulation paddle plates (36) are all located on the front side of the guide vane (111) and are used for assisting the water flow to enter the annular flow guide cover (31) when rotating, and the inclined side wing plate (34) can assist the auxiliary flow regulation paddle plate (36) to rotate when being subjected to strong lateral ocean current.

3. A ship propeller energy saving and flow straightening device with guide vanes according to claim 1, characterized in that: The rear end of each of the several auxiliary flow regulation paddle plates (36) is fixedly installed with a scraper (361), and the scraper (361) is located on the side of the guide vane (111) away from the driving rod (11).

4. A ship propeller energy saving duct device with guide vanes according to claim 3, characterized in that: The side of each of the several scrapers (361) away from the auxiliary flow regulation paddle plate (36) is provided with a mounting groove (3611), the inner side of the mounting groove (3611) is fixedly installed with a cleaning scraper (3612), and the cleaning scraper (3612) is attached to the inner ring of the annular flow guide cover (31).

5. The energy saving propeller fairing with winglets for marine vessels as claimed in claim 1 wherein: The inclined side wing plate (34) is symmetrically distributed with the axis of the driving rod (11) as the center.

6. A ship propeller energy saving duct device with guide vanes according to claim 3, characterized in that: The scraper (361) is made of wear-resistant composite material and is detachably connected with the auxiliary flow regulation paddle plate (36) through bolts; the cross section of the scraper (361) is a trapezoidal structure, the width of which matches the width of the inner ring of the annular flow guide cover (31), so as to ensure that the cleaning scraper (3612) is closely attached to and effectively cleans the inner wall of the annular flow guide cover (31).

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