CN210212743U

CN210212743U - Reduce chimney that line type of windage is optimized

Info

Publication number: CN210212743U
Application number: CN201921203203.5U
Authority: CN
Inventors: Jian Liu; 刘健
Original assignee: Jiangsu New Yangzi Shipbuilding Co Ltd
Current assignee: Jiangsu New Yangzi Shipbuilding Co Ltd
Priority date: 2019-07-29
Filing date: 2019-07-29
Publication date: 2020-03-31
Anticipated expiration: 2029-07-29

Abstract

The utility model relates to a chimney that line type that reduces windage optimizes, including the chimney body, chimney body bottom is equipped with the frame that is X-shaped, and the chimney body still includes panel, circular arc board, the panel is a piece upright board, the circular arc board is the arc upright board that the radius that central angle is 90 is 2m, panel and circular arc board all erect the setting and constitute hollow cube structure; the panels comprise a first panel, a second panel, a third panel, and a fourth panel; the arc plate comprises a first arc plate, a second arc plate, a third arc plate and a fourth arc plate. The utility model discloses a carry out the rounding optimization to each right-angled line type of chimney, provide the chimney that the line type of a reduction resistance was optimized, reduce the windage resistance of boats and ships effectively to reach good energy saving and emission reduction effect.

Description

Reduce chimney that line type of windage is optimized

Technical Field

The utility model relates to a marine machinery field, concretely relates to chimney that line type that reduces windage optimizes.

Background

With the continuous rise of global oil shortage and price and the mandatory implementation of the Energy Efficiency Design Index (EEDI) of ships, the shipowners are more concerned about the operation cost and energy consumption reduction of the shipowners, and the concept of green ships is in depth.

In the prior art, a large pressure gradient exists near each right-angle break angle of the chimney in the design of the chimney, and the details of velocity vector distribution parallel to a waterline show that the velocity of air blown from the bow part suddenly drops when meeting the vertical windward side of a bridge building and is shunted to two sides, the air flows through the right-angle break angle of the chimney and is seriously separated, and large backflow areas are formed at two sides and the rear part of the chimney, so that large resistance is caused.

Chinese patent (CN 2485538Y) relates to a dual-flue chimney smoke inlet device, discloses dual-flue tangent dual air inlet, and the design of this kind of structure has formed a pair of force couple, and it impels each other to form high-speed rotatory vortex, makes the chimney improve the flue gas lifting height, and the spiral case air inlet reduces the windage resistance, and this patent chimney contains spiral case hookup venturi tube, venturi hookup flue, chimney hookup spiral case and two flues, and required part is more, and not tailored to the actual conditions according to boats and ships, does not have the pertinence to the boats and ships field.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem of proposing among the above-mentioned background problem, provide a chimney that the line type of reducing resistance is optimized, it reduces the windage resistance of boats and ships effectively to reach good energy saving and emission reduction effect.

The purpose of the utility model is realized like this: the chimney comprises a chimney body, a frame is arranged at the bottom of the chimney body, the frame is X-shaped, the chimney body further comprises a panel and an arc plate, the panel is a sheet-shaped vertical plate, the arc plate is an arc vertical plate with a central angle of 90 degrees and a radius of 2m, and the panel and the arc plate are vertically arranged and form a hollow cubic structure.

The panels include a first panel, a second panel, a third panel, and a fourth panel.

The arc plate comprises a first arc plate, a second arc plate, a third arc plate and a fourth arc plate.

One end side vertical wall of the first circular arc plate is connected with the side vertical wall of the first panel, the other end side vertical wall is connected with the second panel side vertical wall, one end side vertical wall of the second circular arc plate is connected with the side vertical wall of the second panel, the other end side vertical wall is connected with the side vertical wall of the third panel, one end side vertical wall of the third circular arc plate is connected with the side vertical wall of the third panel, the other end side vertical wall is connected with the side vertical wall of the fourth panel, one end side vertical wall of the fourth circular arc plate is connected with the side vertical wall of the fourth panel, and the other end side vertical wall is connected with the side vertical wall of the first panel.

Preferably, the frame is connected to the hull by welding.

Preferably, the first panel is parallel to the third panel, and the second panel is parallel to the fourth panel.

Preferably, the vertical distance between the second panel and the fourth panel is 12 m.

Compared with the prior art, the utility model has the advantages of it is following:

1. the utility model adopts the guide circle radius processing to each right angle line type of the chimney, the structure not only reduces the value of the middle upper high pressure center of the windward side of the chimney, the pressure gradient near each original right angle break angle is greatly reduced, and the pressure distribution of the chimney is more uniform;

2. the existence of the fillet guide makes the shunting process of fluid from the vertical windward side of the chimney to the two sides smooth, the flow separation is limited in a narrow range close to the side of the bridge, the backflow area at the side of the chimney is greatly reduced, the vortex strength at the rear is reduced, the wind resistance is reduced, the energy consumption is low, and therefore good energy-saving and emission-reducing effects are achieved.

Drawings

Fig. 1 is the utility model discloses a reduce chimney that line type of windage is optimized's spatial structure sketch map, wherein:

1. a chimney body; 2. a frame.

Fig. 2 is a top view of a chimney optimized by a line type for reducing windage, wherein:

3. a panel; 4. a circular arc plate; 3.1, a first panel; 3.2, a second panel; 3.3, a third panel; 3.4, a fourth panel; 4.1, a first arc plate; 4.2, a second arc plate; 4.3, a third arc plate; 4.4 and a fourth arc plate.

Detailed Description

The invention is described below with reference to the accompanying drawings and specific embodiments:

as shown in fig. 1 and 2, a chimney optimized in a line type for reducing wind resistance comprises a chimney body 1, wherein a frame 2 is arranged at the bottom of the chimney body, and the chimney is characterized in that: the chimney comprises a framework 2 and a chimney body 1, wherein the framework 2 is X-shaped, the framework 1 further comprises a panel 3 and an arc plate 4, the panel 3 is a sheet-shaped vertical plate, the arc plate 4 is an arc vertical plate with a central angle of 90 degrees and a radius of 2m, and the panel 3 and the arc plate 4 are vertically arranged and form a hollow cubic structure.

The panels 3 comprise a first panel 3.1, a second panel 3.2, a third panel 3.3 and a fourth panel 3.4.

The arc plate 4 comprises a first arc plate 4.1, a second arc plate 4.2, a third arc plate 4.3 and a fourth arc plate 4.4.

One end side vertical wall of the first circular arc plate 4.1 is connected with the side vertical wall of the first panel 3.1, the other end side vertical wall is connected with the side vertical wall of the second panel 3.2, one end side vertical wall of the second circular arc plate 4.2 is connected with the side vertical wall of the second panel 3.2, the other end side vertical wall is connected with the side vertical wall of the third panel 3.3, one end side vertical wall of the third circular arc plate 4.3 is connected with the side vertical wall of the third panel 3.3, the other end side vertical wall is connected with the side vertical wall of the fourth panel 3.4, one end side vertical wall of the fourth circular arc plate 4.4 is connected with the side vertical wall of the fourth panel 3.4, and the other end side vertical wall is connected with the side vertical wall of the first panel 3.1.

The frame 2 is connected to the hull by welding.

The first panel 3.1 is parallel to the third panel 3.3 and the second panel 3.2 is parallel to the fourth panel 3.4.

The vertical distance between the second panel 3.2 and the fourth panel 3.4 is 12 m.

The above is only a specific application example of the present invention, and does not constitute any limitation to the protection scope of the present invention. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.

Claims

1. A chimney that reduces line type optimization of windage resistance, includes chimney body (1), the chimney body bottom is equipped with frame (2), its characterized in that: the chimney body (1) further comprises a panel (3) and an arc plate (4), the panel (3) is a sheet-shaped vertical plate, the arc plate (4) is an arc-shaped vertical plate with a central angle of 90 degrees and a radius of 2m, and the panel (3) and the arc plate (4) are both vertically arranged and form a hollow cubic structure;

the panels (3) comprise a first panel (3.1), a second panel (3.2), a third panel (3.3) and a fourth panel (3.4);

the arc plates (4) comprise a first arc plate (4.1), a second arc plate (4.2), a third arc plate (4.3) and a fourth arc plate (4.4);

one end side vertical wall of the first circular arc plate (4.1) is connected with the side vertical wall of the first panel (3.1), the other end side vertical wall is connected with the side vertical wall of the second panel (3.2), one end side vertical wall of the second circular arc plate (4.2) is connected with the side vertical wall of the second panel (3.2), the other end side vertical wall is connected with the side vertical wall of the third panel (3.3), one end side vertical wall of the third circular arc plate (4.3) is connected with the side vertical wall of the third panel (3.3), the other end side vertical wall is connected with the side vertical wall of the fourth panel (3.4), one end side vertical wall of the fourth circular arc plate (4.4) is connected with the side vertical wall of the fourth panel (3.4), and the other end side vertical wall is connected with the side vertical wall of the first panel (3.1).

2. The wind resistance reducing linear optimized chimney according to claim 1, characterized in that: the frame (2) is connected with the ship body through welding.

3. The wind resistance reducing linear optimized chimney according to claim 1, characterized in that: the first panel (3.1) is parallel to the third panel (3.3) and the second panel (3.2) is parallel to the fourth panel (3.4).

4. The wind resistance reducing linear optimized chimney according to claim 1 or 3, characterized in that: the vertical distance between the second panel (3.2) and the fourth panel (3.4) is 12 m.