CN212149256U

CN212149256U - Tail hub energy-saving device

Info

Publication number: CN212149256U
Application number: CN202020320522.0U
Authority: CN
Inventors: 张鹏; 王俊; 朴峰华; 李昂
Original assignee: Jiangsu Yangzi Xinfu Shipbuilding Co Ltd
Current assignee: Jiangsu Yangzi Xinfu Shipbuilding Co Ltd
Priority date: 2020-03-16
Filing date: 2020-03-16
Publication date: 2020-12-15
Anticipated expiration: 2030-03-16

Abstract

The utility model relates to a boats and ships field provides a tail hub economizer, improves the wake through hull tail hub top installation acceleration nature pipe in boats and ships screw the place ahead and stator, improves the regional wake of screw, increases the efficiency of hull to improve boats and ships navigational speed, reduce oil consumption. Simultaneously, the reinforcing wing plates and the reinforcing shaft plate are used.

Description

Tail hub energy-saving device

Technical Field

The utility model relates to a boats and ships field, concretely relates to marine tail hub economizer with tail hub structure.

Background

The new ship cost is reduced year by year due to the influence of global shipping, ship-building market depression and ship capacity excess, the order is greatly reduced, the market competition is harsh, the technical level is low, the energy consumption is high, and the product with low added value faces to market elimination. Since 2007, the oil price rises dramatically all the way, which leads to the rising of the cost of ship fuel and the increase of the management cost of shipping enterprises, especially in recent years, the rising oil price has rapidly led to the significant change of the ship operation cost, and the proportion of the fuel cost is increased sharply, which is over 50%. Meanwhile, the international maritime organization and other international organizations pay more attention to ship emission, and energy conservation and emission reduction become more important and prominent in transportation work, so that the energy conservation and emission reduction system becomes a main task of each large shipping company in the world. At present, the design of the structure around a ship propeller is a conventional combined design of a tail hub, a propeller and a rudder blade, and the loss of the wake flow energy of the propeller in the actual propelling process is not considered too much. The tail hub energy-saving device is characterized in that a set of tail hub energy-saving devices are added on the basis of the conventional combination, and the energy-saving effect is achieved by reducing the loss of the wake flow energy of the propeller, so that the fuel cost of shipping enterprises is reduced, the economy is improved, the pollution to the environment can be reduced, and the economic and environmental protection dual benefits are achieved.

Disclosure of Invention

In order to reduce the energy loss of the screw wake, the energy saving, an object of the utility model is to provide a marine tail hub economizer.

In order to achieve the above purpose, the utility model adopts the technical proposal that:

a tail hub energy-saving device comprises a guide pipe and a plurality of guide vanes, wherein the guide vanes are arranged between a tail hub and the inner wall of the guide pipe, the guide pipe comprises a left guide pipe and a right guide pipe, and the left guide pipe and the right guide pipe are spliced to form a semi-cylindrical guide pipe channel; a reinforcing shaft plate is embedded in the splicing seam of the left and right guide pipes, two side surfaces of the reinforcing shaft plate are respectively welded and fixed on the left and right guide pipes, and the rear end surface of the reinforcing shaft plate is welded and fixed with the tail hub; the upper end and left pipe or right pipe welded connection of stator, the other end of stator welds in the tail hub.

Further, the diameter of the water inlet of the conduit channel is larger than the diameter of the water outlet.

Furthermore, the side of the reinforced shaft plate is connected with the tail hub through a side reinforced wing plate, one side of the side reinforced wing plate is connected with the side of the reinforced shaft plate in a welding mode, and the other side of the side reinforced wing plate is connected with the tail hub in a welding mode.

Furthermore, a rear reinforcing wing plate is arranged between the tail hub and the rear end face of the catheter, the front side face of the rear reinforcing wing plate is welded with the rear end face of the reinforcing shaft plate and the rear end face of the catheter, and the rear end face of the rear reinforcing wing plate is welded with the tail hub.

Furthermore, a plurality of lifting lugs are welded on the outer walls of the left guide pipe and the right guide pipe.

Still further, the catheter axis is at an angle to the tail hub axis.

After taking above technical scheme, the beneficial effects of the utility model are that: according to the technical scheme, the accelerating guide pipe and the guide vane are arranged above the tail hub of the ship body in front of the ship propeller to improve wake flow, improve wake flow of the propeller area, and increase efficiency of the ship body, so that the ship speed is increased, and oil consumption is reduced. Simultaneously, the reinforcing wing plates and the reinforcing shaft plate are used.

Drawings

Fig. 1 is a perspective view of the present invention;

FIG. 2 is a front view of the present invention;

fig. 3 is a left side view of the present invention.

Detailed Description

The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings:

as shown in the figure, the tail hub energy-saving device comprises a guide pipe 1, five guide vanes 2, a reinforcing shaft plate 3, a side reinforcing wing plate 4 and a rear reinforcing wing plate 5, wherein the guide pipe is a semi-cylindrical guide pipe channel formed by splicing a left guide pipe 11 and a right guide pipe 12, and the diameter of a water inlet of the guide pipe channel is larger than that of a water outlet. The axis of the conduit and the axis of the tail shaft 7 form an inclination angle, so that the water outlet is provided with a certain angle, and the utilization of water energy is improved. A plurality of lifting lugs 8 are welded on the outer walls of the left and right guide pipes 11 and 12, so that the lifting during construction and installation is facilitated. The lower end face of the reinforcing shaft plate 3 is embedded in the splicing seams of the left and right guide pipes 11 and 12 and connects the left guide pipe and the right guide pipe into a whole in a fillet welding mode. Three guide vanes are welded and installed on the inner side of the left guide pipe 11, two guide vanes are installed on the inner side of the right guide pipe 12, the upper end of each guide vane 2 is welded and connected with the guide pipe 1, the lower end of each guide vane 2 is welded and connected with the tail hub 6, and the guide pipes are fixed on the tail hub 6. In order to fix the duct in a reinforcing manner, the rear end face of the reinforcing shaft plate 3 is welded and fixed to the tail boss 6.

For further fixation, the side surface of the reinforcing shaft plate is connected with the tail hub 6 through the side reinforcing wing plate 4, one side surface of the side reinforcing wing plate 4 is welded with the side surface of the reinforcing shaft plate 3, and the other side surface of the side reinforcing wing plate 4 is welded with the tail hub 6. And a rear reinforcing wing plate 5 is arranged between the tail hub 6 and the rear end face of the catheter 1, the front side face of the rear reinforcing wing plate 5 is simultaneously welded with the rear end face of the reinforcing shaft plate 3 and the rear end face of the catheter 1, and the rear end face of the rear reinforcing wing plate 5 is welded with the tail hub 6.

The installation process of the technical scheme comprises the following steps: firstly, prefabricating five guide vanes 2 and a guide pipe 1 (which are divided into two symmetrical halves according to left and right), then welding and installing three guide vanes on a left guide pipe 11, and welding and installing the other two guide vanes on a right guide pipe 12; and then assembling the guide pipe 1 on a manufacturing platform by taking the outlet surface of the guide pipe 1 as a manufacturing base surface, before assembling, firstly drawing a ground sample line on the manufacturing platform according to the inlet/outlet diameter of the guide pipe 1, then assembling left and right half guide pipes according to the ground sample line, assembling and closing ports on the two half guide wheels, embedding a reinforcing shaft plate 3, then respectively welding and installing a side reinforcing wing plate 4 and a rear reinforcing wing plate 5 on the reinforcing shaft plate 3, wherein the rear reinforcing wing plate 5 needs to be fillet-welded with the reinforcing shaft plate 3 and also needs to be butt-welded with the end surface of the guide pipe 1, and finally installing a lifting lug 8 in place. Thus, the whole tail hub energy-saving device is manufactured. When the energy-saving device is installed on a ship, five guide vanes 2, a reinforcing shaft plate 3, side and rear reinforcing

wing plates

4 and 5 and a ship tail hub 6 are welded and fixed. The specific size of the device is adjusted according to tail line types of different ships, and the device can be perfectly matched with an installed ship by a computational fluid dynamics evaluation method, so that the optimal state of energy conservation and consumption reduction is achieved.

Claims

1. A tail hub energy-saving device comprises a guide pipe and a plurality of guide vanes, wherein the guide vanes are arranged between a tail hub and the inner wall of the guide pipe; a reinforcing shaft plate is embedded in the splicing seam of the left and right guide pipes, two side surfaces of the reinforcing shaft plate are respectively welded and fixed on the left and right guide pipes, and the rear end surface of the reinforcing shaft plate is welded and fixed with the tail hub; the upper end and left pipe or right pipe welded connection of stator, the other end of stator welds in the tail hub.

2. The hub energy saver of claim 1 wherein the conduit channel has a larger inlet diameter than an outlet diameter.

3. The energy-saving device for the tail hub of claim 1, wherein the side surface of the reinforced shaft plate is connected with the tail hub through a side reinforced wing plate, one side surface of the side reinforced wing plate is welded with the side surface of the reinforced shaft plate, and the other side surface of the side reinforced wing plate is welded with the tail hub.

4. The energy-saving device for the tail hub according to claim 1, wherein a rear reinforcing wing plate is arranged between the tail hub and the rear end face of the guide pipe, the front side face of the rear reinforcing wing plate is welded with the rear end face of the reinforcing shaft plate and the rear end face of the guide pipe, and the rear end face of the rear reinforcing wing plate is welded with the tail hub.

5. The energy-saving device for the tail hub of claim 1, wherein a plurality of lifting lugs are welded on the outer walls of the left guide pipe and the right guide pipe.

6. The energy saving device of claim 1, wherein the conduit axis is inclined to the hub axis.