阅读说明：本技术 一种燃料箱用管道内嵌式气液分离结构及燃料箱 (Embedded gas-liquid separation structure of pipeline and fuel tank for fuel tank ) 是由 朱明� 汪昌盛 顾峰 何强 于 2020-04-23 设计创作，主要内容包括：本发明提供一种燃料箱用管道内嵌式气液分离结构及燃料箱,包括叶轮单元,所述叶轮单元布置有上下弧形端面与管道内壁贴合的竖隔板,所述竖隔板一侧布置有横隔板,所述竖隔板与所述横隔板相交；所述横隔板左右弧形端面与管道内壁贴合；所述竖隔板一侧延伸有两块螺旋状隔板,所述螺旋状隔板分别位于所述竖隔板和所述横隔板相交形成的对角区域；所述螺旋状隔板弧状边缘与管道内壁贴合；多个叶轮单元一字型结合形成管道内嵌式气液分离结构。该技术方案可有效分离气体和液体,避免液态燃料进入炭罐,结构小巧,与排气管道配合使用,不占用燃料箱内部容积。(The invention provides a pipeline embedded gas-liquid separation structure for a fuel tank and the fuel tank, comprising an impeller unit, wherein the impeller unit is provided with a vertical partition plate, the upper and lower arc-shaped end surfaces of the vertical partition plate are attached to the inner wall of a pipeline, one side of the vertical partition plate is provided with a transverse partition plate, and the vertical partition plate is intersected with the transverse partition plate; the left and right arc-shaped end surfaces of the diaphragm plate are attached to the inner wall of the pipeline; two spiral partition plates extend from one side of the vertical partition plate, and the spiral partition plates are respectively positioned in diagonal regions formed by the intersection of the vertical partition plate and the transverse partition plate; the arc-shaped edge of the spiral clapboard is attached to the inner wall of the pipeline; the impeller units are combined in a straight line to form a pipeline embedded type gas-liquid separation structure. This technical scheme can effectively separate gas and liquid, avoids liquid fuel to get into the charcoal jar, and the structure is small and exquisite, uses with the exhaust duct cooperation, does not occupy the inside volume of fuel tank.)

1. A pipeline embedded gas-liquid separation structure for a fuel tank and the fuel tank comprise an impeller unit, wherein the impeller unit is provided with a vertical partition plate, the upper and lower arc-shaped end surfaces of the vertical partition plate are attached to the inner wall of a pipeline, one side of the vertical partition plate is provided with a transverse partition plate, and the vertical partition plate is intersected with the transverse partition plate; the left and right arc-shaped end surfaces of the diaphragm plate are attached to the inner wall of the pipeline; two spiral partition plates extend from one side of the vertical partition plate, and the spiral partition plates are respectively positioned in diagonal regions formed by the intersection of the vertical partition plate and the transverse partition plate; the arc-shaped edge of the spiral clapboard is attached to the inner wall of the pipeline; the impeller units are combined in a straight line to form a pipeline embedded type gas-liquid separation structure.

2. The in-line gas-liquid separation structure for a fuel tank and the fuel tank according to claim 1, wherein the vertical partition and the horizontal partition intersect perpendicularly, and an intersection point is located on an axis of the vent line.

3. The in-line gas-liquid separation structure for a fuel tank and the fuel tank according to claim 1, wherein when the plurality of impeller units are combined in a straight line, at least one impeller unit not located at the head end and the tail end is reversely connected.

4. The structure of claim 1, wherein the spiral partition plate has a horizontal projection that forms an acute angle with the fuel vapor outflow direction.

5. The structure of claim 4, wherein the gas-liquid separation structure is located at a starting end of a vapor outflow direction in a vent pipe extending upward along the vapor outflow direction.

6. The invention provides a fuel tank, which is characterized in that a pipeline embedded type gas-liquid separation structure provided by the invention is installed in a fuel tank exhaust pipeline.

Technical Field

The invention relates to the field of motor vehicle fuel tanks, in particular to a pipeline embedded type gas-liquid separation structure for a motor vehicle fuel tank and the fuel tank.

Background

Typically, motor vehicle fuel tanks require the placement of a plurality of valves from which fuel vapors are vented outwardly through a conduit. For the purposes of saving fuel and protecting the environment, the vapor is discharged into a carbon canister through a pipeline, and the carbon canister is filled with activated carbon with strong adsorption capacity, and the activated carbon can adsorb a large amount of fuel vapor so as to prevent the fuel vapor from being directly discharged into the atmosphere to cause environmental pollution.

However, the fuel vapor discharged from the above valve contains not only the fuel gas but also a part of the liquid fuel, which is not efficiently adsorbed and stored by the activated carbon in the canister, and thus it is necessary to separate and recover the liquid from the fuel vapor from the gas to prevent the liquid from entering the canister.

In order to reduce the risk of liquid entering the canister, it is initially applied to provide a liquid trap between the valve of the fuel tank and the canister, by separating and collecting the liquid fuel from the fuel vapour and then returning the collected liquid fuel to the fuel tank through a line. For example, chinese utility model patent with publication number CN207670186U discloses "a motor vehicle fuel tank with a liquid collector", which is provided with a liquid collector inside the fuel tank, the liquid collector is a hollow box body, connects a breathing tube and an oil filling tube, collects the liquid flowing out of the breathing valve.

However, the liquid trap provided by the prior art scheme is an independent box-shaped container, has larger volume, occupies the volume inside the fuel tank, and is additionally provided with a connecting device for the air inlet and the air outlet.

Disclosure of Invention

The present invention is directed to overcome the above problems and disadvantages of the related art, and to provide a pipe-embedded gas-liquid separation structure for a fuel tank and a fuel tank, which can effectively separate gas and liquid and prevent liquid fuel from entering a canister, has a compact structure, and does not occupy the internal volume of the fuel tank when used in cooperation with an exhaust pipe.

In order to achieve the purpose, the pipeline embedded gas-liquid separation structure for the fuel tank and the fuel tank comprise an impeller unit, wherein the impeller unit is provided with a vertical partition plate, the upper and lower arc-shaped end surfaces of the vertical partition plate are attached to the inner wall of a pipeline, one side of the vertical partition plate is provided with a transverse partition plate, and the vertical partition plate is intersected with the transverse partition plate; the left and right arc-shaped end surfaces of the diaphragm plate are attached to the inner wall of the pipeline; two spiral partition plates extend from one side of the vertical partition plate, and the spiral partition plates are respectively positioned in diagonal regions formed by the intersection of the vertical partition plate and the transverse partition plate; the arc-shaped edge of the spiral clapboard is attached to the inner wall of the pipeline; the impeller units are combined in a straight line to form a pipeline embedded type gas-liquid separation structure.

The invention may further be arranged to: the vertical partition plate and the transverse partition plate are vertically intersected, and the intersection point is positioned on the axis of the exhaust pipeline.

The invention may further be arranged to: when the impeller units are combined in a straight line, at least one impeller unit which is not positioned at the head end and the tail end is reversely connected, so that fuel vapor must pass through the lower part of the diaphragm plate of the impeller unit.

The invention may further be arranged to: the included angle of spiral baffle horizontal projection and fuel vapor outflow direction is the acute angle, does benefit to liquid along the backflow of spiral baffle.

The invention may further be arranged to: the embedded gas-liquid separation structure of the pipeline is positioned at the starting end of the steam outflow direction in the exhaust pipeline, and the exhaust pipeline continuously extends upwards along the steam outflow direction.

The invention also provides a fuel tank, wherein the fuel tank is internally provided with the pipeline embedded type gas-liquid separation structure provided by the invention, and the pipeline embedded type gas-liquid separation structure is arranged in a fuel tank exhaust pipeline.

Compared with the prior art, the invention has the following beneficial effects: this technical scheme is embedded in the exhaust duct with the gas-liquid separation structure, constitutes circuitous formula exhaust passage with the exhaust duct inner wall, can effectively carry out gas-liquid separation, hinders liquid fuel and gets into the charcoal canister, does not occupy the fuel tank volume simultaneously.

Drawings

The invention is further described with reference to the following figures and examples, which are provided for reference and illustration only and are not intended to be limiting of the invention.

FIG. 1 is a schematic side view of a preferred embodiment of the present invention;

FIG. 2 is a schematic front view of a preferred embodiment of the present invention;

FIG. 3 is a schematic top view of a preferred embodiment of the present invention;

FIG. 4 is a schematic view of the installation of the preferred embodiment of the present invention;

in the figure: 100. impeller unit, 110 vertical partition, 120 horizontal partition, 130 spiral partition, 200 vapor outflow direction, 300 exhaust pipe.

Detailed Description

[ example 1 ]

As shown in fig. 1 and 2, the pipe-embedded gas-liquid separation structure for a fuel tank and the fuel tank of the invention include an impeller unit 100, wherein the impeller unit 100 is provided with a vertical partition plate 110 whose upper and lower arc-shaped end surfaces are attached to the inner wall of an exhaust pipe 300, one side of the vertical partition plate 110 is provided with a transverse partition plate 120, and the vertical partition plate 110 intersects with the transverse partition plate 120; the left and right arc end surfaces of the diaphragm 120 are attached to the inner wall of the exhaust pipeline 300; two spiral partition plates 130 extend from one side of the vertical partition plate 110, and the spiral partition plates 130 are respectively located in diagonal regions formed by the intersection of the vertical partition plate 110 and the transverse partition plate 120; the arc-shaped edge of the spiral clapboard 130 is attached to the inner wall of the exhaust pipeline 300; the impeller units 100 are combined in a straight line to form a pipeline embedded gas-liquid separation structure.

[ example 2 ]

As shown in fig. 2, the vertical partition 110 and the horizontal partition 120 intersect perpendicularly, and the intersection point is located on the axis of the exhaust pipe. The exhaust duct 300 is equally divided into an unobstructed portion and a flow-restraining portion, and the flow of liquid is restrained while ensuring a sufficient unobstructed path.

[ example 3 ]

As shown in fig. 1 and 3, when the impeller units 100 are combined in a straight line, at least one impeller unit 100 which is not located at the head end and the tail end is reversely connected, so that fuel vapor must pass through the lower part of the diaphragm 120 of the impeller unit 100, liquid can fall back to the lower part of the exhaust duct 300, and gas passes through the lower part of the diaphragm 120 and then is continuously discharged upwards.

[ example 4 ]

As shown in fig. 3, an included angle between the horizontal projection of the spiral partition 130 and the fuel vapor outflow direction 200 is an acute angle, which is beneficial for the liquid to flow back along the spiral partition 130, so that the liquid is not easy to accumulate inside the present embodiment.

[ example 5 ]

As shown in fig. 3 and 4, the pipe inline gas-liquid separation structure is located at the beginning of the vapor outflow direction 200 in the exhaust pipe 300, and the exhaust pipe 300 continuously extends upward along the vapor outflow direction 200.

The present invention can also combine two or more technical features described in the above embodiments 2-5 with embodiment 1 to form a new embodiment.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention. In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.