CN215323249U

CN215323249U - Marine chimney that prevents sea water and flow backward

Info

Publication number: CN215323249U
Application number: CN202121095790.8U
Authority: CN
Inventors: 张作月; 王应威; 吕松毅
Original assignee: Shanghai Shipping Branch Of Sinopec Offshore Oil Engineering Co ltd; Sinopec Oilfield Service Corp
Current assignee: Shanghai Shipping Branch Of Sinopec Offshore Oil Engineering Co ltd; Sinopec Oilfield Service Corp
Priority date: 2021-05-21
Filing date: 2021-05-21
Publication date: 2021-12-28
Anticipated expiration: 2031-05-21

Abstract

The utility model discloses a marine ventilating duct for preventing seawater from flowing backwards, which belongs to the technical field of ship ventilating ducts and comprises a duct body; the ventilating cap is arranged at the top of the barrel body; the wave-proof plate is arranged below the ventilating cap and surrounds the barrel body in a round table shape, and a gas flowing channel is formed between the wave-proof plate and the barrel body. According to the utility model, the cylindrical wave-proof plate is arranged on the barrel body below the ventilator cap, and the wave-proof plate can block seawater which upwells towards a gap between the ventilator cap and the barrel body, so that the phenomenon that the seawater flows backwards and enters the cabin is prevented; meanwhile, air flow channels are arranged between the ventilating cap and the wave-proof plate and between the wave-proof plate and the barrel body so as to ensure the ventilation quantity of the ventilating funnel.

Description

Marine chimney that prevents sea water and flow backward

Technical Field

The utility model relates to the technical field of ship ventilation tubes, in particular to a marine ventilation tube capable of preventing seawater from flowing backwards.

Background

The design positions of the left and right topsides of the rear main deck of the old three-purpose working ship are lower, and the positions of cabin ventilation ducts are arranged on the left and right topsides of the rear main deck. When the ship sails under severe sea conditions, sea waves on the port and the starboard of the rear deck are particularly serious, seawater can directly flow back into an engine room from a ventilating hood (mushroom head shape) of a ventilating duct, important equipment such as an exhaust fan, a main engine reduction gear box lubricating oil pump, a shaft driven generator and the like are arranged below the ventilating duct of the engine room, and the backwater not only easily corrodes electromechanical equipment, but also causes hidden danger to the sailing safety of the ship and influences the normal operation of the whole ship.

When sailing in stormy weather, in order to prevent the risk that the electromechanical equipment is corroded by seawater and the potential hidden danger of ship sailing safety caused by the fact that seawater is poured into the engine room backwards, the person on duty only needs to take emergency measures for temporarily closing the two ventilating ducts of the engine room. However, this leads to new problems, since during operation of the devices such as the main engine, the ambient temperature of the cabin increases significantly, the surface temperature of the devices in operation also increases, and a strong back pressure is formed in the entire cabin space, which leads to a risky situation.

The existing ventilating duct arranged on a ship is not completely suitable for the working condition of the ship due to the self condition, so that the deck ventilating duct can cause seawater to be filled into an engine room in heavy stormy weather, and the risk of seawater corrosion of electromechanical equipment and the potential hidden danger of ship navigation safety are caused.

Disclosure of Invention

In view of this, the utility model aims to provide a marine ventilating funnel for preventing seawater backflow, so as to solve the technical problem that the existing ventilating funnel has seawater backflow.

The technical scheme adopted by the utility model is as follows:

a marine funnel for preventing seawater from flowing backward, comprising:

a cylinder (1);

the ventilating cap (2), the ventilating cap (2) is arranged on the top of the barrel (1);

the wave-proof plate (3) is arranged below the ventilating cap (2) and surrounds the barrel body (1) in a circular truncated cone shape for one circle so as to block upwelled seawater; and an air flow channel is arranged between the wave-proof plate (3) and the barrel body (1).

Furthermore, the distance between the upper end face of the wave-proof plate (3) and the lower end face of the ventilation cap (2) is a, and a is more than or equal to 100mm and less than or equal to 150 mm.

Furthermore, the wave-proof plate (3) and the barrel body (1) are coaxially arranged.

Furthermore, the taper of the wave-proof plate (3) is 2: 1.

Furthermore, the difference between the radius size of the upper end surface of the wave-proof plate (3) and the radius size of the ventilator cap (2) is b, and b is 50 mm.

Further, the length of the side surface of the wave-proof plate (3) is c, and c is 300 mm.

Further, the thickness of the wave-proof plate (3) is not less than 8 mm.

Furthermore, the material of the wave-proof plate (3) is stainless steel.

Furthermore, the wave-proof plate (3) is connected with the barrel body (1) through angle irons (4).

Furthermore, the intersection point of the generatrices of any two of the wave-proof plates (3) is positioned below the ventilation hood (2).

The utility model has the beneficial effects that:

1. according to the utility model, the cylindrical wave-proof plate is arranged on the barrel body below the ventilator cap, and the wave-proof plate can block seawater which upwells towards a gap between the ventilator cap and the barrel body, so that the phenomenon that the seawater flows backwards and enters the cabin is prevented; meanwhile, air flow channels are arranged between the ventilating cap and the wave-proof plate and between the wave-proof plate and the barrel body so as to ensure the ventilation quantity of the ventilating funnel.

2. The utility model has the advantages of convenient operation, convenient installation and improvement, low cost, strong use effect and good practicability when the working condition of the ship is poor.

Drawings

FIG. 1 is a schematic structural view of a funnel of the present invention;

FIG. 2 is a schematic structural diagram of a conventional air funnel;

in the figure:

1-a cylinder body;

2-a ventilator cap;

3-a wave board;

4-angle iron.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and are not intended to limit the present invention.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

Embodiment, as shown in fig. 1, a marine funnel for preventing seawater from flowing backward includes:

the bottom end of the cylinder 1 is connected with the ship body;

the ventilating cap 2 is arranged at the top of the barrel 1, a gap is formed between the ventilating cap 2 and the barrel 1, and gas can enter and exit the engine room through the gap;

the wave-proof plate 3 is arranged below the ventilator cap 2 and surrounds the barrel 1 in a circular truncated cone shape for one circle, and the wave-proof plate 3 is used for blocking upwelled seawater so as to prevent the upwelled seawater from flowing backwards into the cabin from a gap between the barrel 1 and the ventilator cap 2; an air flowing channel is formed between the wave-proof plate 3 and the barrel body 1, and air below the wave-proof plate 3 can enter and exit the engine room through the air flowing channel and a gap between the barrel body 1 and the ventilator cap 2, so that the exchange of the air inside and outside the engine room is realized.

According to the utility model, the barrel body 1 below the ventilating hood 2 is provided with the breakwater 3 in a circular truncated cone shape with a small upper part and a big lower part, and the breakwater 3 can block seawater which upwells towards a gap between the ventilating hood 2 and the barrel body 1, so that the phenomenon that the seawater flows backwards and enters the cabin is prevented; meanwhile, an air flowing channel is arranged between the wave-proof plate 3 and the barrel body 1 so as to ensure the ventilation quantity of the ventilation barrel.

In one embodiment, the distance between the upper end surface of the breakwater 3 and the lower end surface of the ventilator cap 2 is a, and a is greater than or equal to 100mm and less than or equal to 150mm, so that an air flow channel is formed between the breakwater 3 and the ventilator cap 2. By the arrangement, the ventilation volume of the ventilating duct can be increased, so that a good air exchange effect inside and outside the cabin is ensured; and simultaneously, seawater below the wave-proof plate 3 can be prevented from being sucked into the ventilating duct.

In one embodiment, the breakwater 3 is disposed coaxially with the barrel 1. So set up, be convenient for breakwater 3 and barrel 1 fixed connection, also can guarantee the ventilation effect of air funnel preferred.

In one embodiment, the included angle between the generatrix of the breakwater 3 and the horizontal plane is 45 °, that is, the taper of the breakwater 3 is 2: 1. By such arrangement, the wave guard plate 3 has a better blocking effect on sea waves.

Further, the length of the side of the breakwater 3 is c, and c is 300 mm. So set up, can increase the effective area of preventing unrestrained and do not influence the air inlet space for the wave board 3 blocks the sea water of upwelling totally.

Further, the intersection of the generatrices of any two breakwaters 3 is located below the cowl 2. With this arrangement, it can be ensured that the seawater blocked by the breakwater 3 is not sucked into the funnel in the air flow passage between the breakwater 3 and the cylindrical body 1.

In one embodiment, the difference between the radius of the upper end surface of the breakwater 3 and the radius of the ventilator cap 2 is b, and b is 50 mm. So set up, can guarantee the intake in clearance between ventilator cap 2 and the barrel 1.

In an embodiment, the material of the breakwater 3 is stainless steel, and the thickness of the breakwater 3 is not less than 8 mm. So set up, can improve the intensity and the durable type of breakwater 3, and then increase of service life.

In one embodiment, the breakwater 3 is fixedly connected to the barrel 1 through four angle irons 4. So set up, can convenient and fast be fixed in the breakwater 3 on barrel 1, angle bar 4 plays the fixed stay and strengthens the effect of breakwater 3.

Compared with the prior art, the ventilating duct has the following beneficial effects:

the round table-shaped wave guard plate 3 is arranged on the barrel 1 below the ventilator cap 2, when seawater comes on the barrel in a heavy storm, the seawater is blocked and intercepted by the wave guard plate 3, air flowing channels between the wave guard plate 3 and the barrel 1 and between the ventilator cap 2 do not influence draught of a fan, the temperature of an engine room is reduced, the surface temperature of each running device is kept in a normal range, air inflow of a host is guaranteed, working condition parameters of the host under high load are improved, and running and use of the device are not influenced.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a marine draft tube that prevents sea water backward flow which characterized in that includes:

a cylinder (1);

2. The marine funnel for preventing seawater from flowing backwards as claimed in claim 1, wherein the distance between the upper end surface of the wave-proof plate (3) and the lower end surface of the ventilator cap (2) is a, and a is greater than or equal to 100mm and less than or equal to 150 mm.

3. The marine reverse flow seawater preventing funnel according to claim 1, wherein the breakwater (3) is coaxially arranged with the barrel body (1).

4. The marine funnel for preventing seawater from flowing backwards as claimed in claim 1, wherein the taper of the wave-proof plate (3) is 2: 1.

5. The marine reverse-flow-preventing ventilating duct according to claim 1, wherein the difference between the radius of the upper end surface of the wave-preventing plate (3) and the radius of the ventilating cowl (2) is b, b being 50 mm.

6. The marine funnel for preventing seawater from flowing backwards as claimed in claim 1, wherein the length of the side surface of the breakwater (3) is c, and c is 300 mm.

7. The marine funnel for preventing seawater from flowing backward as claimed in claim 1, wherein the thickness of the breakwater (3) is not less than 8 mm.

8. The marine funnel for preventing seawater from flowing backwards as claimed in claim 1, wherein the material of the breakwater (3) is stainless steel.

9. The marine ventilating funnel for preventing seawater from flowing backwards as claimed in claim 1, wherein the breakwater (3) is connected with the barrel body (1) through angle iron (4).

10. The marine reverse-flow-preventing ventilating funnel according to claim 1, wherein the intersection of the generatrices of any two of the wave-preventing plates (3) is located below the ventilating cowl (2).