Thruster

 

(57) Abstract:

Usage: shipbuilding, in particular, thrusters. Essence: thruster is made in the hull boats in channel 1 with the working body 3, preferably with a paddle screw. Channel 1 is made of two or three sections that are installed with a clearance of 5 relative to each other. The working body 3 is installed in one of the sections. The inner cavity of the channel through each gap is in communication with the outside environment. The ends of the walls 6 of the sections of the channel facing the gap, bent outward from the inner cavity of the channel. 1 C. p. F.-ly, 4 Il.

The invention relates to shipbuilding, in particular, to the thruster devices thrust.

Known thruster containing the working body, mainly propeller mounted in a channel made in the underwater part of the hull boats (see USSR author's certificate N 787267, CL 63 N 25/46, publ. 1980). This device is selected as the closest analogue of the invention. It enhances operational capabilities, but does not increase the hydrodynamic characteristics.

The technical result of the invention is to improve affta channel made of two or three sections, installed with a gap relative to each other, and the working body is installed in one of the sections, and the inner cavity of the channel through each gap is in communication with the outside environment at the ends of the wall sections of the channel facing the gap, bent outward from the inner cavity of the channel.

In addition, the section of the channel in which is mounted a working body, made in cross-section smaller sections that do not contain it.

In Fig.1 shows a thruster with a single gap, constant cross-section channel and the working body of the propeller screw; Fig.2 is the same, with two gaps and a constant cross-section channel of Fig.3 is the same, with two gaps and changes in the channel cross section between the gaps; Fig.4 is the same, with two gaps of the channel, which is a section containing the working body, made in the form of the guide nozzle.

Shown in Fig.1 thruster includes channel 1, located inside the housing 2 floating working body of the screw 3 with the actuator 4, the inside of the channel. The channel has an annular gap 5, the wall of the channel 6 in the area of the gap bent outward relative to the axis of the channel. Limited outer casing Mezhdunarodnoe space 7 is filled with water and soo is shown in Fig.2 thruster has two gap 5 and 10 in the channel.

In Fig.3 shows the channel of the thruster with two gap 5 and 10, and sections of channel 1 and 11 have a cross section greater than the section of the channel 12 in which is located the screw 3.

In Fig.4 shows the channel thrusters with two gap 5 and 10, and the section of the channel in which is mounted a propeller 3, made in the form of the guide nozzle 13.

When working thrusters with one gap and a constant cross section of the channel to create a thrust on the left side (Fig.1) the actuator 4 causes the rotation of the screw 3 so that the channel 1 generates a stream on the right Board. This, along with the entrainment of fluid from the suction space 8 through the entrance to the canal, is the entrainment of water to the propeller through the gap 5 of mezhdunarodnogo space 7, which, in turn, the liquid enters from outside of the space 8 through the openings 9 in the outer case 2.

If necessary, create a thrust to starboard, the actuator 4 rotates the screw 3 in the opposite direction, the flow in the channel 1 is directed to the left (Fig. 1). The gap 5 in this case does not affect the flow in the channel, which occurs as if the channel was solid.

If the channel is constantly the initial Board, the flow in the channel is directed to the right, the gap 5 podsushivaet liquid, the gap 10 no, when reversing device, the picture will change to the opposite.

The thrusters (Fig. 3) the cross section of the channel at the site I and II is greater than at site 12. When creating such a traction device on the port side propeller 3 generates in the channel of the stream to the right.

In the gap 5 at the expense of discharging water is sucked to propeller screw, as described above. When reversing device flow in the channel is directed to the left. Due to the large cross-sectional area of channel 1 due to the ejection effect of the fluid on the same tract is sucked into the channel 1 through the gap 5.

Set forth is true for the gap 10 and section of the channel 11. In this case, if there are two gaps of 5 and 10 in the channel thrusters suction fluid in the channel occurs through both the gap, one due to vacuum through the second due to ejection. When reversing device, the picture will change to the opposite.

The thrusters (Fig.4) the section of the canal in the vicinity of the propeller 3 is made in the form of the guide nozzle 13. This thruster gaps 5 and 10 function analeese for propeller and extending from the screw threads.

1. THRUSTER containing the working body, mainly propeller mounted in a channel made in the underwater part of the hull of the watercraft, wherein the channel is made of two or three sections, mounted with clearance relative to each other, and the working body is installed in one of these sections, and the inner cavity of the channel through each gap is in communication with the outside environment at the ends of the wall sections of the channel facing the gap, bent outward from the inner cavity of the channel.

2. The device under item 1, characterized in that the section of the channel in which is mounted a working body, made in cross-section smaller than the section that does not contain it.

 

Same patents:

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