KR101444362B1 - Waterjet propeller with shatterproof steering system - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steering apparatus for a water jet propulsion system, and more particularly, to a steering apparatus for a water jet propulsion system, in which, in order to minimize scattering of water jet water through a connection portion between a stator and a steering apparatus,
A steering apparatus comprising a steering bucket connected to a stator of a water jet propulsion unit for switching between left and right directions and a reverse bucket comprising upper and lower buckets for a reverse rotation at the rear of the steering bucket, And a scattering preventing means for blocking the water jet caused by the generation of the propulsive force on the inner edge of the front end so as not to be scattered by the gap formed between the inner surface of the front end of the steering bucket and the stator. .

Description

[0001] The present invention relates to a water jet propeller with a shatterproof steering system,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steering apparatus for a water jet propeller, and more particularly, to a steering apparatus for a water jet propeller having a water scattering prevention function of a water jet propeller for minimizing scattering of water jet through a connection portion between a stator and a steering apparatus, To a steering apparatus.

Generally, a water jet propulsion unit refers to a water jet propulsion unit that receives power from a diesel engine or a gas turbine, which is a main engine of a ship or a ship, and rotates the impeller disposed inside the stator at high speed, And the thrust generated by jetting the air into the nozzle.

On the other hand, in the case of a screw propeller, which is a conventional propeller provided in a ship, an excessive amount of cavitation is generated on a wing surface in a high-speed operation area, and therefore, there are disadvantages such as reduction of thrust, hull vibration, underwater noise, .

Compared to a general screw propeller having various problems described above, in the case of a water jet propeller, since the pressure around the impeller and the stator blade of the pump is high, cavitation is suppressed so that the disadvantages of the conventional screw propeller described above can be minimized As a result, the water jet propeller is suitable as a propulsion device of a high-speed ship as the propulsion efficiency is increased as the area of high-speed operation is increased. Moreover, the vibration and noise are reduced and the operation performance and the feeling of boarding comfort are improved.

In addition, it is suitable for coastal navigation with high obstacles such as fishing grounds and net because there is no protrusion outside the hull, as well as conditions for securing the coastal security force and securing a wide operation area by operating at low water depth. Acceleration and deceleration maneuverability.

As shown in FIGS. 8A and 8B, the conventional water jet propeller 100 having various advantages as described above includes an induction pipe 110 formed from a bottom surface of a hull to a transom of a stern, A stator 130 mounted on the outer surface of the transom so as to have a water jet propulsion force by directing the rotational component of the seawater generated in the impeller 120 rotated by the power transmitted from the power engine to a linear component, The steering device 140 is provided to swing the water jet propelling force forward, backward, leftward or rightward.

The steering apparatus 140 includes a steering bucket 145 pivoted to the left and right at a steering angle of +/- 30 degrees by a pair of steering cylinders 142 connected to the stator 130, A reverse bucket 148 formed by an upper bucket 148a and a lower bucket 148b linked to a conventional hinge at the end of the steering bucket 145 to block the rear water jet of the steering bucket 145 by a reverse cylinder 146, .

Accordingly, as the impeller is rotated by the driving of the power engine, the seawater flowing through the induction pipe passes through the stator and has a water jet propulsion force, so that the impeller has forward propulsion capability. If necessary, the steering wheel rotates left and right It can be reversed by the buckets, as well as by the inverted cylinder and the buckled buckets.

However, in the conventional steering apparatus provided in the water jet propeller described above, there is a problem in that, due to the gap spaced at a constant interval between the stator and the adjacent steering bucket, The propulsion is deteriorated due to the scattering of the water jet, and the steering cylinder and the counter-rotating cylinder for switching the left and right directions of the stator and the steering bucket as well as the water jet water scattered by the peripheral devices are damaged in a short time. Therefore, the problem of not being able to switch back and forth between the left and right direction is also frequently encountered.

In addition, when the upper surface of the steering bucket and the upper bucket which is a bucket that is a reverse bucket are lowered to the lower portion due to the backward movement, a large amount of water jets are scattered even in a gap formed between the upper surface of the propelling bucket and the upper bucket. There was also a problem of promoting.

On the other hand, there has been a problem in that a regulator for a water jet propeller is provided in the registration utility model No. 20-0432673 or Korean Patent No. 10-0976888, which was previously filed by the applicant of the present invention, .

Korean Registered Utility Model No. 20-0432673 Korean Patent No. 10-0976888

SUMMARY OF THE INVENTION It is an object of the present invention to provide a water jet propeller that minimizes scattering of water jet through a connection portion between a stator and a steering device due to propulsion of a water jet propeller, And to provide a steering apparatus having a scattering prevention function.

Another object of the present invention is to minimize the interference caused by the rotation of the stator and the steering bucket.

It is a further object of the present invention to minimize the scattering of seawater over the steering bucket and the inverted bucket.

It is a further object of the present invention to provide a method and apparatus for preventing seawater from spilling into the steering bucket and the inverted bucket.

According to an aspect of the present invention, there is provided a steering apparatus comprising: a steering bucket connected to a stator of a water jet propeller for switching between left and right directions; and a reverse bucket comprising upper and lower buckets for a reverse rotation at the rear of the steering bucket And a scattering preventing means for blocking a water jet caused by the generation of an impelling force from being scattered by a gap formed between the inner surface of the front end of the steering bucket and the stator on the inner edge of the tip end side of the steering bucket in contact with the stator .

The scattering prevention means is constituted by a blocking plate formed on an inner side edge portion of the steering bucket so as not to interfere with the left and right turning radius of the steering bucket.

And an end surface of the blocking plate in contact with the stator is formed in an arc-like shape.

And both ends of each end surface formed in an arcuate shape of the blocking plate are connected to each other.

A scattering prevention member is further provided between the upper surface of the steering bucket and the upper bucket of the inverted bucket so that the water jet due to the generation of the thrust is not scattered between the upper surface of the steering bucket and the upper portion of the upper bucket.

The scattering prevention member is a blocking bracket that blocks the water jet from falling off of the upper bucket when the top surface steering cylinder of the steering bucket is installed in front of the block.

The shatterproof member is a corrugated pipe which is fixed to the upper inner side surface of the upper bucket and the lower end of the block provided with the steering cylinder and is provided to be shrunk or expanded so that the water jet is not scattered by the elastic force.

The scattering prevention member is a prevention plate formed on the upper inner side surface of the upper bucket so as not to interfere with the upper surface of the steering bucket due to the lowering of the upper bucket.

The upper end of the blocking plate is hingedly coupled to the inner side surface of the upper bucket so that the blocking plate is inclined rearward from the hinged portion.

The present invention minimizes scattering of the water jet water through the connection portion between the stator and the steering apparatus due to the propulsion of the water jet propeller, thereby improving the reliability of the steering apparatus and achieving high economical efficiency It has an additional effect that it can have.

Further, by minimizing the interference caused by the rotation of the stator and the steering bucket, interference is not generated when the steering bucket rotates in the left and right directions, so that the steering can be smoothly turned. .

In addition, it is also possible to minimize the scattering of the seawater to the upper portion of the steering bucket and the inverted bucket, thereby preventing the water jet from being scattered from the steering device in advance, thereby further improving the reliability of the steering apparatus.

In addition, it is possible to shut off the scattering of seawater to the upper part of the steering bucket and the inverted bucket, thereby maximizing the reliability of the steering apparatus by blocking scattering of all the water jet from the steering apparatus.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective exploded perspective view schematically showing the present invention. Fig.
Figure 2 is a schematic side view of a coupled state according to Figure 1;
3 is a schematic view schematically showing the use state of the present invention.
4 is a schematic view schematically showing another embodiment of the present invention.
5 is a schematic view schematically showing still another embodiment of the present invention.
6A and 6B are schematic views showing another embodiment of the present invention.
7A and 7B are schematic views showing another embodiment of the present invention.
8 is a schematic view schematically showing still another embodiment of the present invention.
9A and 9B are schematic views schematically showing still another embodiment of the present invention.
10A is a schematic view of a general water jet propeller.
Fig. 10B is a schematic view schematically showing the use state according to Fig. 10A. Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective exploded perspective view schematically showing the present invention, FIG. 2 is a schematic side view of a coupled state according to FIG. 1, and FIG. 3 is a schematic view showing a use state of the present invention.

As shown in the figure, as the impeller 120, which is provided in the stator 130, is rotated at a high speed by receiving power from a power engine provided on the ship, the seawater introduced from the bottom of the hull through the induction pipe 110 is directed to the stern side A steering bucket 145 which is pivoted to the left and right at a steering angle of ± 30 ° by a pair of steering cylinders 142 in a water jet propeller 100 that propels by using a thrust generated by jetting into a nozzle, A reverse bucket 148 that is linked to a conventional hinge at the end of the steering lock 145 to block the backward portion of the steering bucket 145 by the inverted cylinder 146 from the upper and lower buckets 148a and 148b, In the steering device 140,

In order to minimize scattering of the water jet water through the connecting portion of the steering apparatus due to the propulsion of the water jet propeller, in particular, between the stator and the steering bucket,

A water jet due to the generation of an impelling force is blocked on the inner edge of the front end of the steering bucket 145 in contact with the stator 130 so as not to be scattered by the gap formed between the inner surface of the front end of the steering bucket 145 and the stator 130 Preventing means (1).

The scattering prevention means 1 includes a shield plate 10 formed at an inner side edge portion of the steering bucket 145 so as not to interfere with the left and right turning radius of the steering bucket 145 by the steering cylinder 142, .

That is, the blocking plate is formed in the shape of a regular isosceles triangle at the corner portion of the rectangular shaped steering bucket so that the corner portion where the largest gap is generated between the ends of the stator of the conical shape is blocked, It is possible to minimize the gap formed in the opening.

The water jet of high pressure generated at the end of the stator 130 due to the generation of the propulsive force collides with the inner surface of the steering bucket 145. In other words, Scattering prevention means 1 formed at the inner side edge of the steering bucket 145 at this time is scattered through a gap formed between the steering bucket 145 and the stator 130 due to collision with the backward bucket 148, The water jet of the high pressure is prevented from being scattered to the outside as the gap between the inner surface of the steering bucket 145 and the stator 130 is minimized by the shielding plate 10 which is the shield plate.

Thereby preventing the deterioration of the propulsive force caused by scattering of the water jet in the gap formed between the steering bucket and the stator as well as preventing the propelling force from being scattered to the steering cylinder or the backward cylinder and peripheral devices due to the splash prevention, It is possible to prevent a malfunction and to secure a longer period of use so as to improve the reliability of the steering apparatus.

Thus, according to the present invention, it is possible to prevent scattering of the water jet due to propulsion by means of the simple structure of the scattering prevention means provided in the steering bucket, thereby enhancing the reliability of the steering apparatus, It is possible to have a high economical efficiency.

On the other hand, in the structure of the above-described scattering prevention means, the steering bucket connected to the stator and rotated for switching between the left and right direction is provided with a stator, together,

It is preferable that the end face of the blocking plate 10 in contact with the stator is formed in an arc shape so that when the steering bucket 145 connected to the end of the stationary stator is pivoted by ± 30 ° to the left and right, Since the end of the blocking plate 10 is formed in an arcuate shape, it is possible to smoothly prevent the waterjet from being scattered within a range that does not interfere with the outer peripheral surface of the end of the stator.

As shown in FIG. 5, both end portions of the end plates formed in an arcuate shape of the shield plate 10 are formed to be connected to each other, so that the inner side of the steering bucket, which interferes with the steering bucket, It is desirable to minimize the spacing between the outer circumferential surfaces of the stator so that the water jet can be essentially blocked from scattering.

As shown in FIGS. 6A and 6B, the upper bucket according to the backward rotation is pivoted rearward of the steering bucket between the steering bucket and the upper bucket of the inverted bucket, where the high-pressure water jet is prevented from being scattered To be able to do so,

Between the upper surface of the steering bucket 145 and the upper bucket 148a as the inverted veneer 148 so that the water jet is not scattered between the upper surface of the steering bucket 145 and the upper portion of the upper bucket 148a, (2) is further provided.

At this time, the scattering-preventing member 2 is disposed in front of the block 143 on which the upper surface steering cylinder 142 of the steering bucket 145 is installed, so that the water jet is not scattered due to the descent of the upper bucket 148a. The water jacket 20b which is scattered by the mounting plate 20a mounted by bolting or welding or the like which is a normal fastening type and the blocking plate 20b bent toward the upper bucket 148a toward the upper end of the mounting plate 20a It is preferable that the shielding bracket 20 be a shielding bracket.

The gap formed between the upper bucket lowered from the rear side of the steering bucket and the upper surface of the steering bucket when the ship is turned back due to the backward movement of the ship is minimized to prevent the water jet from scattering, It is possible to prevent the steering cylinder or the backward cylinder, as well as the respective facilities from being damaged, thereby ensuring a longer use period of each facility.

7A and 7B, the scattering-preventing member 2 may have a fluidity according to the rotation of the upper bucket of the inverted bucket,

The shatterproofing member 2 is fixed to the upper inner surface of the upper bucket 148a and the lower end of the block 143 provided with the steering cylinder 142 by a screw or bolt or the like with a conventional bracket or the like, It is preferable that the bellows tube 30 is provided so as to be shrunk or expanded so as not to scatter the water jet.

In other words, the corrugated tube, which is the scattering-preventing member, contracts or expands along with its rotation as the inverted bucket upper bucket is lowered and raised to the rear of the steerable bucket and the gap formed between the upper surface of the steerable bucket and the upper bucket The water jacket is prevented from being scattered so as to prevent damage to various facilities due to scattering of the water jet, thereby ensuring a longer use period.

As shown in FIG. 8, between the steering bucket and the upper bucket of the inverted bucket, a gap spaced apart at a predetermined interval is generated so that the upper bucket according to the backward rotation can have a pivot range to rotate backward of the steering bucket In order to prevent the water jet from being scattered in the above gap,

It is preferable that the scattering prevention member 2 is a prevention plate 40 formed on the upper inner side surface of the upper bucket 148a so as not to interfere with the upper surface of the steering bucket 145 due to the lowering of the upper bucket 148a . At this time, the prevention plate has a length corresponding to the width direction of the upper bucket.

And thus the gap formed between the upper bucket lowered from the rear side of the steering bucket and the upper surface of the steering bucket when the boat is backward due to the backward movement of the ship is minimized so that the water jet can be prevented from being scattered .

Preferably, the prevention plate is formed on the inner side of the inner side of the upper bucket so as to have a height that does not cause interference with the upper surface of the steering bucket due to the lowering of the upper bucket.

Accordingly, it is possible to prevent the water jet from being scattered even through the upper surface of the steering bucket and the gap formed when the upper bucket of the inverted bucket is lowered, thereby minimizing the scattering of seawater to the steering cylinder, The reliability of the apparatus can be further increased.

9A and 9B, the upper end of the prevention plate 40 is rotatably supported on the inner surface of the upper bucket 148a by a conventional method It is preferable that the prevention plate 40 is formed to be inclined from the hinge-coupled portion to the rear side from the hinge-engaged portion.

In other words, the prevention plate is folded backward between the upper bucket and the upper surface of the steering bucket starting from the normally hinged portion. When the bucket is lowered, the folded back prevention plate is raised by the hinged portion So that the water jet is essentially blocked from scattering.

In addition, since the prevention plate is formed to have a slope toward the rear side at all times, it is not erected at right angles to the upper surface of the steering bucket, and can be folded smoothly when the upper bucket is lifted and then raised again.

Accordingly, since the upper bucket is rotatably provided on the upper surface of the steering bucket, it is possible to prevent the water jet from being scattered in accordance with the lowering of the upper bucket. In addition, The folding can be smoothly performed.

1: scattering prevention means 10:
2: shatterproof member 20: blocking bracket
20a: mounting plate 20b: shield plate
30: corrugated pipe 40:
100: Waterjet propeller
110: induction tube 120: impeller
130: stator 140: steering device
142: Steering cylinder 143: Block
145: Steering bucket 146: Reverse cylinder
148: inverted bucket 148a: upper bucket
148b:

Claims (9)

A steering bucket 145 connected to the stator 130 of the water jet propeller 100 for switching between left and right directions and upper and lower buckets 148a and 148b for reversing the rear of the steering bucket 145 And a reverse rotation bucket (148)
A water jet due to the generation of an impelling force is prevented from being scattered in a gap formed between the inner surface of the front end of the steering bucket 145 and the stator 130 at the edge of the inner end surface of the steering bucket 145 contacting the stator 130 Scattering prevention means (1); And
When the upper bucket is caused to rotate backward by the generation of the thrust force between the upper surface of the steering bucket 145 and the upper bucket 148a of the inverted bucket 148, The scattering prevention member 2 is further provided so as not to be scattered between the upper part of the overflow bucket 148a,
The shatterproofing member 2 is fixed to the upper inner surface of the upper bucket 148a and the lower end of the block 143 provided with the steering cylinder 142 so that the shrink tube 30). ≪ Desc / Clms Page number 24 > The method according to claim 1,
The scattering prevention means 1 is constituted by a blocking plate 10 formed at the inner side edge portion of the steering bucket 145 so as not to interfere with the left and right turning radius of the steering bucket 145 Steering device having scattering prevention function of water jet propeller. 3. The method of claim 2,
Wherein the end face of the shield plate (10) in contact with the stator (130) is formed in an arc-like shape. The method of claim 3,
The steering apparatus according to claim 1, wherein the shield plate (10) is formed to have an arcuate shape and both end portions of the end plates are connected to each other. delete delete delete delete delete

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