KR-20260064230-A - Wingsail unit for preventing prevent occurrence of slot leakage flow

KR20260064230AKR 20260064230 AKR20260064230 AKR 20260064230AKR-20260064230-A

Abstract

A wing sail unit for preventing the occurrence of slot leakage flow is disclosed. The wing sail unit includes: a wing sail; a flap positioned behind the trailing edge of the wing sail so as to be spaced apart from the trailing edge end of the wing sail by a gap of a predetermined length; and a control shaft mounted on one side of the wing sail in the height direction of the wing sail to fix and support the blocking plate so as to be in a position where the blocking plate covers the gap in the direction of airflow.

Inventors

김민일
이평국
김진규
이희동
박상준
안규중

Assignees

삼성중공업 주식회사

Dates

Publication Date: 20260507
Application Date: 20241031

Claims (5)

Wing sail; A flap positioned behind the trailing edge of the wing sail, spaced apart by a gap of a predetermined length from the trailing edge end of the wing sail; and A wing sail unit for preventing slot leakage flow, comprising a control shaft that is mounted in the height direction of the wing sail on one side of the wing sail so as to fix and support the blocking plate so that the blocking plate is in a position to cover the gap in the direction of airflow.
In paragraph 1, A wing sail unit that prevents the occurrence of slot leakage flow, wherein the blocking plate, which has a plate shape having a predetermined width, is fixedly coupled to the control shaft in the radial direction of the control shaft and rotates in the circumferential direction of the control shaft in correspondence with the rotation of the control shaft according to the control of a controller.
In paragraph 2, The above adjustment shaft and the above blocking plate are respectively positioned on both sides of the wing sail, and A wing sail unit that prevents the occurrence of slot leakage flow, wherein the adjustment shafts disposed on each side of the wing sail are rotated under the control of the controller so that the outer end of the blocking plate moves away from or closer to the side of the flap in correspondence with the rotation of the flap.
In paragraph 2, The above adjustment shaft is mounted on the rear end of the wing sail, and A wing sail unit that prevents the occurrence of slot leakage flow, wherein the above-described adjustment shaft is rotated under the control of the controller so that the outer end of the blocking plate is positioned toward the leading edge end of the flap in correspondence with the rotation of the flap.
Wing sail; A flap positioned behind the trailing edge of the wing sail, spaced apart by a predetermined length gap from the trailing edge end of the wing sail; A barrier spool that is wound and fixedly mounted on each side of the wing sail in the height direction of the wing sail; and A fixing part is fixedly mounted on each side of the flap in the height direction to fix an end frame fixedly positioned at the outer end of the barrier wound on the barrier spool, wherein A wing sail unit that prevents the occurrence of slot leakage flow, wherein a pulley member is provided on the barrier spool, which is rotated by the control of a controller to wind or unwind the barrier in correspondence with the change in gap due to the relative rotation of the flap with respect to the barrier spool sharing the barrier and the wing sail of the fixed part.

Description

Wingsail unit for preventing occurrence of slot leakage flow The present invention relates to a wing sail unit that prevents the occurrence of slot leakage flow. Ships operating at sea rely heavily on fossil fuels, to the extent that the shipping industry's annual carbon emissions are estimated to exceed 1 billion tons. Accordingly, the International Maritime Organization (IMO) has declared the realization of carbon neutrality in the shipping industry by 2050 and set targets to reduce greenhouse gas emissions by at least 20% by 2030 and at least 70% by 2040. In response to stricter marine environmental regulations, the shipping industry is also considering ways to reduce fossil fuel consumption by equipping ships with wind-powered auxiliary devices such as wing sails and rotor sails, and by using wind to improve the propulsion of ships. Wing sails are generally manufactured in the shape of an airfoil and mounted on ships, and the wing sail rotates in response to the direction of the wind blowing toward the ship, and the wind applied to the wing sail generates thrust acting in the direction of the ship's propulsion. Recently, multi-element wingsails, which have additional flaps placed at the rear of the wing sails deployed on ships, have also been developed and are in operation. However, in multi-element wingsails, there is a gap between the wing sail and the flaps, and slot leakage flow occurs through the gap in the airflow following the multi-element wingsail. Such slot leakage flow causes premature flow separation, which not only suppresses the generation of sufficient thrust but also causes operational difficulties for the wing sail and flaps. The matters described in the technical background section of this invention are for the purpose of understanding the background of the invention and cannot be concluded as prior art already known to a person with ordinary knowledge in the field to which this technology belongs. FIG. 1 is a drawing showing a vessel equipped with a multi-element wing sail according to the prior art. FIG. 2 is a diagram illustrating slot leakage flow of a multi-element wing sail according to the prior art. FIG. 3 is a drawing illustrating the structure of a wing sail unit according to an embodiment of the present invention. FIG. 4 is a drawing for explaining the operating state of a wing sail unit according to an embodiment of the present invention. FIG. 5 is a drawing showing the structure and operating state of a wing sail unit according to another embodiment of the present invention. FIG. 6 is a drawing showing the structure and operating state of a wing sail unit according to another embodiment of the present invention. The present invention is capable of various modifications and may have various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the invention to specific embodiments, and it should be understood that the invention includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention. Embodiments of the present invention will be described below with reference to the accompanying drawings. In the accompanying drawings, identical components are given the same reference numerals, and in the description of the embodiments, identical or corresponding components may be briefly described or redundant descriptions may be omitted. In the drawings, each component may be depicted in an exaggerated size for convenience of explanation and understanding, and it is obvious that the present invention is not limited to the size and proportion of the components depicted in the drawings. FIG. 1 is a drawing showing a ship equipped with a multi-element wing sail according to the prior art, and FIG. 2 is a drawing for explaining slot leakage flow of a multi-element wing sail according to the prior art. Referring to FIG. 1, a vessel (10) is equipped with a plurality of multi-element wing sails (20). The multi-element wing sail (20) may include a wing sail (21), a flap (22), a base (23), and a cap (24). The wing sail (21) is positioned relatively forward compared to the flap (22). Here, the flap (22) can be formed to be relatively smaller in size compared to the wing sail (21). Each of the wing sail (21) and flap (22) may have a horizontal cross section that is, for example, symmetrical wing shape (airfoil), semicircular or semi-elliptical shape, or asymmetrical shape with camber. Each of the wing sail (21) and flap (22) may be positioned such that the leading edge is relatively facing forward and the trailing edge is relatively facing aft. Each of the wing sail (21) and flap (22) can be formed from a rigid material such as carbon fiber, steel, alloy, plastic, etc. The wing sail (21) and the flap (22) can be rotated in an appropriate direction to increase the thrust of the vessel (10) by utilizing wind blowing from the side. To this e