A fuel tank with built-in anti-surge plate

Abstract

This utility model discloses a built-in anti-surge plate for fuel tanks, comprising several columns fixed inside the fuel tank, the columns being spaced apart along the length of the fuel tank, and a horizontally arranged anti-surge plate between adjacent columns. The anti-surge plate has raised edges around its perimeter, perpendicular to the plane of the anti-surge plate. The anti-surge plate has several diversion holes (first type), several diversion holes (second type), and several return ports. The return ports are located between diversion holes (first type) and diversion holes (second type). Reinforcing structures (first type) are provided on both the upper and lower sides of the anti-surge plate between diversion holes (first type) and return ports, and reinforcing structures (second type) are provided on both the upper and lower sides of the anti-surge plate between return ports and diversion holes (second type). Connectors are provided on both the left and right sides of the anti-surge plate. Several mounting grooves for the connectors to pass through are provided on each column along its height. This utility model possesses excellent structural strength and durability.

Description

Technical Field

[0001] This utility model belongs to the field of oil tank anti-wave technology, and specifically relates to an internal anti-wave plate for oil tanks. Background Technology

[0002] As a key energy storage component of a vehicle's powertrain, the stability of the fuel inside the fuel tank directly affects vehicle safety, fuel economy, and engine fuel supply reliability. During acceleration, braking, steering, or driving in complex road conditions, the fuel experiences violent sloshing due to inertia and centrifugal force, creating a "surge" with periodic oscillation characteristics. This surge not only poses a risk of fuel pump cavitation but can also generate noise, exacerbate structural fatigue, and even negatively impact the vehicle's NVH (noise, vibration, and harshness) performance due to the violent impact of fuel against the tank's inner wall.

[0003] In the prior art, a baffle plate for automotive fuel tanks is disclosed, with an application date of 2019-10-15 and publication number CN211000928U. It is installed inside the fuel tank and includes an elastic plate. One side of the plate has a first and second connecting portion integrally formed and bent with it. The first and second connecting portions have opposite bending directions and are staggered. The plate is fixedly connected to the inner wall of the fuel tank through the first and second connecting portions. When fuel flows, the plate acts as a baffle, and the elastic first and second connecting portions absorb the impact of the flowing fuel on the plate, reducing the impact force transmitted to the inner wall of the fuel tank. The core principle of this single-layer flat baffle plate is to slow down the lateral flow of fuel through planar obstruction. However, its shortcomings include: the plate is prone to bending deformation under long-term high-frequency impact from fuel, increasing the risk of structural failure; and the multi-point stud fixation to the fuel tank wall is prone to loosening under vehicle vibration and alternating fuel loads, leading to a decrease in the baffle plate's function. Utility Model Content

[0004] The purpose of this utility model is to provide a built-in anti-surge baffle in a fuel tank, which has excellent structural strength and durability, and realizes multi-point and stable installation of the anti-surge baffle in the fuel tank, thereby enhancing the connection rigidity of the overall structure.

[0005] The purpose of this utility model is achieved as follows: A built-in baffle plate for a fuel tank includes several columns fixed inside the fuel tank. The columns are spaced apart along the length of the fuel tank. A horizontally arranged baffle plate is provided between two adjacent columns. The baffle plate has a raised edge around its perimeter, which is perpendicular to the plane of the baffle plate. The baffle plate has several diversion holes I, several diversion holes II, and several return ports. The return ports are located between diversion holes I and diversion holes II. A reinforcing structure I is provided on both the upper and lower sides of the baffle plate between diversion holes I and the return ports. A reinforcing structure II is provided on both the upper and lower sides of the baffle plate between the return ports and diversion holes II. Connectors are provided on both the left and right sides of the baffle plate. The columns have several mounting grooves along their height to allow the connectors to pass through.

[0006] When this invention is in use, the fuel sloshes due to inertia during vehicle operation. The horizontally arranged baffle first guides and constrains the impacting fuel through its raised edges, changing the lateral flow direction of the fuel and initially dispersing the impact energy. Subsequently, when the fuel flows through the first and second diversion holes on the baffle, the surge kinetic energy is further attenuated by the cutting action of the channels on the fluid. The return port located between the two provides a directional return channel for the retained fuel, promoting the circulation of fuel in different areas and reducing local pressure peaks. During this process, the first and second reinforcing structures on the upper and lower sides of the baffle simultaneously bear the fuel impact load, preventing the baffle from deforming. Compared with the prior art, the beneficial effects of this utility model are as follows: by connecting the connecting parts on both sides of the baffle plate to the mounting groove on the column, the baffle plate is installed at multiple points and stably in the fuel tank, which enhances the connection rigidity of the overall structure; reinforcement structure one and reinforcement structure two are set in the key stress areas between the diversion hole and the return port on the upper and lower sides of the baffle plate, which significantly improves the structural strength, rigidity and service life of the baffle plate under long-term fuel impact, and effectively prevents deformation and fatigue damage.

[0007] As a further improvement of this utility model, the connector includes a cuboid snap-fit ​​part and a limiting part, the mounting groove is a rectangular structure, the snap-fit ​​part extends into the mounting groove, one end face of the limiting part is fixedly connected to the wave deflector, and the other end face abuts against the column.

[0008] As a further improvement of this utility model, the return port includes an inclined elongated channel and a flow-guiding step surrounding the channel.

[0009] As a further improvement of this utility model, the reinforcing structure includes a plurality of cross-shaped reinforcing ribs connected end to end.

[0010] As a further improvement of this utility model, the second reinforcing structure is a T-shaped reinforcing rib.

[0011] As a further improvement of this utility model, a gap is left between the end of the cross-shaped reinforcing rib and the raised edge.

[0012] As a further improvement of this utility model, a gap is left between the end of the T-shaped reinforcing rib and the protruding edge.

[0013] As a further improvement of this utility model, a plurality of the first diversion holes are arranged in a matrix on the wave deflector, and a plurality of the second diversion holes are arranged in a matrix on the wave deflector. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the wave-blocking plate of this utility model.

[0015] Figure 2 This is a front view of the present invention.

[0016] Figure 3 This is a top view of the present invention.

[0017] Among them, 1 is the column, 2 is the baffle plate, 3 is the raised edge, 4 is the first diversion hole, 5 is the second diversion hole, 6 is the return port, 601 is the through groove, 602 is the diversion step, 7 is the first reinforcing structure, 8 is the second reinforcing structure, 9 is the connector, 901 is the snap-fit ​​part, 902 is the limiting part, and 10 is the mounting groove. Detailed Implementation

[0018] like Figure 1-3 As shown, a baffle plate built into a fuel tank includes multiple columns 1 fixed inside the fuel tank. The columns 1 are spaced apart along the length of the fuel tank. A horizontally arranged baffle plate 2 is provided between two adjacent columns 1. The baffle plate 2 is surrounded by a raised edge 3, which is perpendicular to the plane of the baffle plate 2. The baffle plate 2 has six diversion holes 4 arranged in a matrix, four diversion holes 5 arranged in a matrix, and three return ports 6. The return ports 6 are located between the diversion holes 4 and the diversion holes 5. A reinforcing structure 7 is provided on the upper and lower sides of the baffle plate 2 between the diversion holes 4 and the return ports 6. A reinforcing structure 8 is provided on the upper and lower sides of the baffle plate 2 between the return ports 6 and the diversion holes 5. Connectors 9 are provided on the left and right sides of the baffle plate 2. The columns 1 have three mounting grooves 10 along their own height to accommodate the connectors 9.

[0019] In this embodiment, the connector 9 includes a cuboid snap-fit ​​part 901 and a limiting part 902. The mounting groove 10 is rectangular. The snap-fit ​​part 901 extends into the mounting groove 10. One end face of the limiting part 902 is fixedly connected to the wave deflector 2, and the other end face abuts against the column 1. The interference fit between the cuboid snap-fit ​​part 901 and the rectangular mounting groove 10 can precisely limit the translational freedom of the wave deflector 2 in the length and height directions of the mounting groove 10. The limiting part 902 further constrains the horizontal displacement of the wave deflector 2 by abutting against the end face of the column 1, forming an "XYZ" three-way positioning, which solves the problem that traditional single-point connections are prone to loosening due to vibration.

[0020] Specifically, the return port 6 includes an inclined elongated channel 601, with inwardly recessed guide steps 602 around the channel 601 to guide fuel back in an orderly manner along the steps, reducing turbulence and noise.

[0021] Specifically, the first reinforcement structure 7 includes two cross-shaped reinforcing ribs connected end to end, which provide bending stiffness in both the length and width directions of the wave deflector 2. A gap is left between the end of the cross-shaped reinforcing rib and the raised edge 3. The second reinforcement structure 8 is a T-shaped reinforcing rib, which disperses the local impact force to the adjacent area in the horizontal direction, avoiding the risk of fracture caused by stress concentration in traditional single-rib structures. A gap is left between the end of the T-shaped reinforcing rib and the raised edge 3.

[0022] The advantages of this utility model are as follows: The horizontally arranged baffle plate 2, together with the diversion hole 4, diversion hole 5 and return port 6 designed thereon, can effectively intercept, disperse and guide the fuel flow, greatly reduce the surge of fuel under vehicle dynamic conditions, and thus reduce the fuel sloshing amplitude; multiple independent baffle plate units 2 can be flexibly and modularly combined and arranged along the length direction according to the specific geometric dimensions and spatial characteristics of the fuel tank, with strong adaptability; the component design of baffle plate 2, column 1 and connector 9, as well as the standardized hole and groove structure, simplifies the manufacturing process and facilitates mechanized mass production, quality control, on-site assembly and subsequent inspection and maintenance.

[0023] This utility model is not limited to the above embodiments. Based on the technical solutions disclosed in this utility model, those skilled in the art can make some substitutions and modifications to some of the technical features without creative labor, and these substitutions and modifications are all within the protection scope of this utility model.

Claims

1. A built-in anti-surge baffle for a fuel tank, comprising a plurality of columns fixed inside the fuel tank, wherein the plurality of columns are spaced apart along the length of the fuel tank, characterized in that, A horizontally arranged wave-breaking plate is provided between two adjacent columns. The wave-breaking plate has a raised edge around its perimeter, which is perpendicular to the plane of the wave-breaking plate. The wave-breaking plate has several diversion holes I, several diversion holes II, and several return ports. The return ports are located between diversion holes I and diversion holes II. A reinforcing structure I is provided on both the upper and lower sides of the wave-breaking plate between diversion holes I and return ports. A reinforcing structure II is provided on both the upper and lower sides of the wave-breaking plate between return ports and diversion holes II. Connectors are provided on both the left and right sides of the wave-breaking plate. The column has several mounting grooves along its height to allow the connectors to pass through.

2. An in-tank anti-slosh plate as defined in claim 1, wherein, The connector includes a cuboid snap-fit ​​part and a limiting part. The mounting groove is a rectangular structure. The snap-fit ​​part extends into the mounting groove. One end face of the limiting part is fixedly connected to the wave deflector, and the other end face abuts against the column.

3. An in-tank anti-waving plate according to claim 1, wherein The return port includes an inclined elongated channel and a flow-guiding step surrounding the channel.

4. An in-tank anti-waving plate according to claim 1, wherein The reinforcing structure includes several cross-shaped reinforcing ribs connected end to end.

5. An in-tank anti-waving plate according to claim 1, wherein The second reinforcing structure is a T-shaped reinforcing rib.

6. An in-tank anti-waving plate according to claim 4, wherein A gap is left between the end of the cross-shaped reinforcing rib and the raised edge.

7. An in-tank anti-waving plate according to claim 5, wherein A gap is left between the end of the T-shaped reinforcing rib and the protruding edge.

8. An in-tank anti-waving plate according to claim 1, wherein Several of the first diversion holes are arranged in a matrix on the wave-breaking plate, and several of the second diversion holes are arranged in a matrix on the wave-breaking plate.

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