An oil leakage-proof oil tank venting pipe device

Abstract

An oil tank vent pipe device for preventing oil leaks is disclosed, belonging to the technical field of oil leak prevention for vent pipes. In this device, one end of the vent pipe passes through the deck and connects to the oil tank, while the other end is fitted with a vent cap. Inside the oil tank, an oil leak prevention assembly is installed at the vent pipe. The oil leak prevention assembly has a U-shaped structure formed on its base plate by an oil-permeable protective plate, a first oil-blocking side plate, and a second oil-blocking side plate, with opposing openings on opposite sides. The oil leak prevention assembly is welded to the inner wall of the oil tank below the deck. The oil-permeable protective plate has drain holes for both ventilation and oil permeation, with opposing openings close to the tank wall and leaving a leak gap. The drain holes are elongated rectangles, accommodating both oil overflow and prevention of side oil wave impact. When the oil surface in the tank sloshes, the base plate prevents oil directly impacting the vent pipe from entering it. Oil entering the oil leak prevention assembly from the side through the drain holes is discharged through the bottom plate and the leak gap. This device reduces the amount of oil entering the vent pipe.

Description

Technical Field

[0001] This invention relates to a leak-proof oil tank vent pipe device, which belongs to the technical field of leak-proof vent pipes. Background Technology

[0002] Ship fuel tanks (including cargo tanks on tankers and storage tanks on other ship types) require vent pipes to maintain stable internal pressure due to fluctuating oil levels. These vent pipes are typically connected to the deck. Figure 1 As shown, when the oil level is high, the fuel and cargo oil in the tank will generate a wave effect due to the turbulence during the ship's navigation. In severe turbulence, the fuel will rush to the upper deck through the vent pipe, causing safety hazards and economic losses.

[0003] For example, in a port in China, during refueling operations in 2021, the ship tilted to the right (simulating severe sea conditions). When high-pressure sweeping was carried out with a high oil level, fuel covered the air inlet of the vent pipe and gushed out from the vent pipe.

[0004] Currently, the height of vent pipes in ship fuel tanks is generally less than two meters. In rough seas, this can easily lead to leaks due to complex oil slicks within the tank – similar to how seawater sprays out of ballast tanks during navigation. Most fuel tank vent pipes are equipped with buffer boxes. Since the vent cap's primary function is to prevent seawater from entering the vent pipe, its internal C-shaped bend, when combined with the buffer box, reduces ventilation efficiency. Cleaning is difficult, and after repeated oil fillings, sediment can easily accumulate, obstructing ventilation. Due to the confined space and pressure differences within the buffer box, it is impossible to effectively prevent oil spills. Summary of the Invention

[0005] To address the problems existing in the prior art, this invention provides an oil tank venting pipe device that prevents oil leakage. The device uses a protective plate to reduce the impact of oil waves on the venting channel, thereby reducing oil spillage.

[0006] The technical solution adopted in this invention is as follows: a leak-proof oil tank vent pipe device, one end of the vent pipe passes through the deck and is connected to the oil tank, and the other end of the vent pipe is provided with a vent cap; inside the oil tank, an oil leak-proof component is provided at the vent pipe.

[0007] In the oil leak prevention assembly, the bottom plate is formed by an oil-permeable protective plate, a first oil-blocking side plate, and a second oil-blocking side plate, forming a U-shaped structure, with opposite openings on the opposite sides of the oil-permeable protective plate; in the oil leak prevention assembly, the oil-permeable protective plate, the first oil-blocking side plate, and the second oil-blocking side plate are welded to the inner wall of the oil tank below the deck;

[0008] The oil-permeable protective plate is provided with oil drain holes for ventilation and oil permeation, with opposite openings close to the tank wall and oil leakage seams. The bottom plate prevents oil from directly rushing into the vent pipe when the oil surface in the oil tank is swaying. Oil that enters the oil leak prevention assembly from the side through the oil drain holes is discharged through the oil leakage seams after passing through the bottom plate.

[0009] Furthermore, the first and second oil baffles are also provided with oil drain holes.

[0010] Furthermore, the height of the bottom end of the vent pipe is higher than the height of the upper edge of the oil drain hole.

[0011] Furthermore, the oil-permeable protective plate, the first oil-blocking side plate, and the second oil-blocking side plate form an oil-draining buffer chamber to prevent oil from entering the vent pipe due to violent shaking.

[0012] Furthermore, the oil drain hole is a long and narrow rectangular hole.

[0013] Compared with existing technologies, this invention has the following advantages: low cost; high versatility; easy to clean and maintain; the shape of the base plate can be flexibly adjusted to trapezoidal, triangular, etc., according to the surrounding structure; the oil leak prevention component is located near the inlet below the vent pipe, which reduces the amount of oil entering the vent pipe; the oil drain hole is a narrow rectangle, which takes into account both oil overflow and prevention of side oil wave impact. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of a leak-proof oil tank venting device.

[0016] Figure 2 This is a schematic diagram showing the fit between the oil leak prevention components and the bulkhead.

[0017] Figure 3 This is the front view of the oil leak prevention component.

[0018] Figure 4 This is a top view of the oil leak prevention component.

[0019] In the diagram: 1. Vent pipe, 2. Vent cap, 3. Deck, 4. Oil leak prevention assembly, 5. Bulkhead, 6. Bottom plate, 7. First oil-blocking side plate, 8. Second oil-blocking side plate, 9. Opposing opening, 10. Oil leak protection plate, 11. Oil drain hole, 12. Oil tank, 13. Oil leak seam. Detailed Implementation

[0020] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0023] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0024] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0025] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, rotated 90 degrees, or in other orientations, and the spatial relative descriptions used herein will be interpreted accordingly.

[0026] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0027] Figures 1 to 4 An oil tank vent pipe device for preventing oil leakage is shown. One end of the vent pipe 1 passes through the deck 3 and is connected to the oil tank 12. The other end of the vent pipe 1 is provided with a vent cap 2. An oil leakage prevention component 4 is provided at the vent pipe 1 inside the oil tank 12.

[0028] In the oil leak prevention assembly 4, the bottom plate 6 is surrounded by an oil-permeable protective plate 10, a first oil-blocking side plate 7, and a second oil-blocking side plate 8 forming a U-shaped structure, with opposite sides of the oil-permeable protective plate 10 having opposing openings 9; in the oil leak prevention assembly 4, the oil-permeable protective plate 10, the first oil-blocking side plate 7, and the second oil-blocking side plate 8 are welded to the inner wall of the oil tank 12 below the deck 3;

[0029] The bottom plate 6, the oil-permeable protective plate 10, the first oil-blocking side plate 7, and the second oil-blocking side plate 8 are all made of flat steel. The bottom plate 6 covers the vent pipe exposed in the oil tank 12; the oil-permeable protective plate 10, the first oil-blocking side plate 7, and the second oil-blocking side plate 8 are three supporting structures that also serve as shielding; the oil-permeable protective plate 10 is provided with an oil drain hole 11 to prevent oil from accumulating above the baffle.

[0030] During installation, the oil permeability protection plate 10, the first oil-blocking side plate 7, and the second oil-blocking side plate 8 are welded to the top deck of the oil tank 12. The symmetrical sides of the oil permeability protection plate 10 are not baffled to ensure that the ventilation openings 9 face the ship's structure, such as bulkheads and hull plating. An oil leakage seam 13 is provided between the bottom plate 6 and the bulkhead 5 at the opposing opening 9 for ventilation and oil leakage; and because the oil sloshing amplitude is smaller near the bulkhead, this seam prevents oil from entering the vent pipe through the seam.

[0031] The oil-permeable protective plate 10 is provided with an oil drain hole 11 for ventilation and oil permeation, and the opposing opening 9 is close to the bulkhead 5 and has an oil leakage gap 13; the oil surface in the oil tank 12 is swaying, and the bottom plate 6 prevents the oil that directly rushes into the vent pipe 1 from entering the vent pipe. The oil that enters the oil leak prevention component 4 from the side through the oil drain hole 11 is discharged through the bottom plate 6 and then through the oil leakage gap 13.

[0032] Furthermore, the first oil baffle side plate 7 and the second oil baffle side plate 8 are also provided with oil drain holes 11.

[0033] Furthermore, the bottom of the vent pipe 1 is higher than the upper edge of the oil drain hole 11.

[0034] Furthermore, the oil-permeable protective plate 10, the first oil-blocking side plate 7, and the second oil-blocking side plate 8 form an oil-draining buffer chamber to prevent oil from entering the vent pipe 1 due to violent shaking.

[0035] The shape of the base plate can be flexibly adjusted to trapezoidal, triangular, or other shapes to suit the surrounding structure. An oil leak prevention component is located near the inlet below the vent pipe to reduce oil entry into the vent pipe. The oil drain hole is a long, narrow rectangle, accommodating both oil overflow and prevention of side oil wave impact.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A leak-proof oil tank venting pipe device, wherein one end of the venting pipe (1) passes through the deck (3) and is connected to the oil tank (12), and the other end of the venting pipe (1) is provided with a vent cap (2); characterized in that: Inside the oil tank (12), an oil leak prevention component (4) is installed at the vent pipe (1). In the oil leak prevention assembly (4), the bottom plate (6) is surrounded by an oil-permeable protective plate (10), a first oil-blocking side plate (7) and a second oil-blocking side plate (8) forming a U-shaped structure, and the opposite side of the oil-permeable protective plate (10) is an opposing opening (9); in the oil leak prevention assembly (4), the oil-permeable protective plate (10), the first oil-blocking side plate (7) and the second oil-blocking side plate (8) are welded to the inner wall of the oil tank (12) below the deck (3); The oil-permeable protective plate (10) is provided with an oil drain hole (11) for ventilation and oil permeation, and the opposing opening (9) is close to the bulkhead (5) and has an oil leakage seam (13); the oil surface sloshing in the oil tank (12) is prevented from entering the ventilation pipe (1) by the bottom plate (6), and the oil enters the oil leakage prevention component (4) from the side through the oil drain hole (11), and is discharged through the oil leakage seam (13) after passing through the bottom plate (6).

2. The leak-proof oil tank venting pipe device according to claim 1, characterized in that: The first oil baffle side plate (7) and the second oil baffle side plate (8) are also provided with oil drain holes (11).

3. The leak-proof oil tank venting pipe device according to claim 1, characterized in that: The bottom of the vent pipe (1) is higher than the upper edge of the oil drain hole (11).

4. The leak-proof oil tank venting pipe device according to claim 1, characterized in that: The oil-permeable protective plate (10), the first oil-blocking side plate (7), and the second oil-blocking side plate (8) form an oil-draining buffer chamber to prevent oil from entering the vent pipe (1) due to violent shaking.

5. The leak-proof oil tank venting pipe device according to claim 1, characterized in that: The oil drain hole (11) is a long and narrow rectangular hole.

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