High-pressure-resistant fuel tank structure

Abstract

The utility model relates to the technical field of fuel tanks, and provides a high-pressure-resistant fuel tank structure which is characterized by comprising a tank body, a support, a top welding plate and a bottom welding plate, and the tank body is provided with a top wall and a bottom wall; the support is located in the box body and located between the top wall and the bottom wall. The top welding plate is arranged at the upper end of the bracket and is welded with the top wall; the bottom welding plates are arranged at the lower end of the support and welded to the bottom wall, and the sum of the number of the top welding plates and the number of the bottom welding plates is larger than or equal to three. According to the technical scheme, the problems that the overall weight is increased and the cost is high due to the fact that the high-pressure resistance of the box body is improved by increasing the thickness of the box body in the prior art are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fuel tank technical field, specifically, relate to a kind of high-pressure-resistant fuel tank structure. BACKGROUND

[0002] Fuel tank is used to store fuel's airtight container, the fuel tank of present generally is made of plastic, with light weight, anticorrosive advantage, but want to improve its high-pressure-resistant performance, generally is through the way of increasing box thickness to realize, such although can make fuel tank promote part high-pressure-resistant performance, but also increase overall weight, and cost is higher. SUMMARY

[0003] The utility model provides a kind of high-pressure-resistant fuel tank structure, solve the problem of increasing box thickness in the related art to improve its high-pressure-resistant performance, increase overall weight, and cost is higher.

[0004] The technical scheme of the utility model is as follows: a kind of high-pressure-resistant fuel tank structure, key is: including,

[0005] Box, the box has top wall and bottom wall;

[0006] Support, the support is located in the box interior, and is located between the top wall and the bottom wall;

[0007] Top welding plate, the top welding plate is set on the support upper end, and is welded with the top wall;

[0008] Bottom welding plate, the bottom welding plate is set on the support lower end, and is welded with the bottom wall, the sum of the number of the top welding plate and the bottom welding plate is greater than or equal to three.

[0009] Further, the number of the top welding plate is one, the number of the bottom welding plate is two, and the spacing of the two bottom welding plates is greater than or equal to 150mm.

[0010] Further, the number of the top welding plate and the bottom welding plate is two, the spacing of the two top welding plates is greater than or equal to 150mm, and the spacing of the two bottom welding plates is greater than or equal to 150mm.

[0011] Further, the support includes,

[0012] First stringer, the upper end of the first stringer is provided with the top welding plate, and the lower end of the first stringer is provided with the bottom welding plate;

[0013] Second stringer, the second stringer is located on one side of the first stringer, and the lower end of the second stringer is provided with the bottom welding plate;

[0014] a first cross beam, one end of the first cross beam is connected with the first longitudinal beam, and the other end of the first cross beam is connected with the upper end of the second longitudinal beam.

[0015] Further, the first cross beam is obliquely arranged, and the end connected with the second longitudinal beam is obliquely downward.

[0016] Further, the bracket comprises,

[0017] a second cross beam, the second cross beam is located between the top wall and the bottom wall;

[0018] a third longitudinal beam, the third longitudinal beam is located at both ends of the second cross beam, the lower end of the third longitudinal beam is connected with the second cross beam, and the upper end of the third longitudinal beam is provided with the top welding plate;

[0019] a third cross beam, the third cross beam is located at both sides of the second cross beam, and one end of the third cross beam is connected with the second cross beam;

[0020] a fourth longitudinal beam, the upper end of the fourth longitudinal beam is connected with the other end of the third cross beam, and the lower end of the fourth longitudinal beam is provided with the bottom welding plate.

[0021] Further, the bracket further comprises a top protruding strip, the top protruding strip is arranged on the top welding plate and located on the side of the top welding plate facing the top wall, the number of the top protruding strips is multiple, all the top protruding strips are divided into at least two top protruding strip groups, all the top protruding strip groups are uniformly arranged along the circumferential direction of the top welding plate, all the top protruding strips in the same top protruding strip group are arranged along the radial direction of the top welding plate, and the side of the top protruding strip facing the top wall is provided with multiple protruding top gripping points, and all the top gripping points are arranged along the length direction of the top protruding strip.

[0022] Further, the bracket further comprises a bottom protruding strip, the bottom protruding strip is arranged on the bottom welding plate and located on the side of the bottom welding plate facing the bottom wall, the number of the bottom protruding strips is multiple, all the bottom protruding strips are divided into at least two bottom protruding strip groups, all the bottom protruding strip groups are uniformly arranged along the circumferential direction of the bottom welding plate, all the bottom protruding strips in the same bottom protruding strip group are arranged along the radial direction of the bottom welding plate, and the side of the bottom protruding strip facing the bottom wall is provided with multiple protruding bottom gripping points, and all the bottom gripping points are arranged along the length direction of the bottom protruding strip.

[0023] Further, the top welding plate and the bottom welding plate are both provided with overflow holes.

[0024] Further, the bracket is provided with a weight-reducing groove.

[0025] The utility model discloses a working principle and beneficial effect is: the box has top wall and bottom wall, the support is located inside the box, and is located between top wall and bottom wall, top welding board sets up the upper end of support, and welds with top wall, bottom welding board sets up the lower end of support, and welds with bottom wall, and the sum of the number of top welding board and bottom welding board is greater than or equal to three. The support can play the role of supporting and dispersing pressure between top wall and bottom wall with top welding board and bottom welding board, and the force transmission is more uniform and stable through multi-point welding, can disperse the downward pressure that top wall bears and the upward pressure that bottom wall bears, avoids local pressure too big, can enhance the high pressure resistance of the whole structure of the box, and does not need to increase the thickness of the box greatly, can avoid the additional weight caused by thickening material, makes fuel tank still maintain relatively light quality under the premise of guaranteeing intensity, is favorable to transportation, installation and application on the equipment sensitive to weight. Through reducing the material consumption of the box, material cost can be saved. BRIEF DESCRIPTION OF DRAWINGS

[0026] The above-mentioned features, technical characteristics, advantages and implementation modes of the utility model will be further explained in a clear and understandable manner in combination with the preferred embodiments and the drawings.

[0027] Figure 1 It is a structure schematic diagram of one direction of the utility model.

[0028] Figure 2 It is a structure schematic diagram of another direction of the utility model.

[0029] Figure 3 It is a structure schematic diagram of one direction of the first support in the utility model.

[0030] Figure 4 It is a structure schematic diagram of another direction of the first support in the utility model.

[0031] Figure 5 It is a structure schematic diagram of one direction of the second support in the utility model.

[0032] Figure 6 It is a structure schematic diagram of another direction of the second support in the utility model.

[0033] Figure 7 It is a structure schematic diagram of top catch point in the utility model.

[0034] Figure 8 It is a structure schematic diagram of bottom catch point in the utility model.

[0035] In the figure: 1, box body, 1-1, top wall, 1-2, bottom wall, 2, support, 2-1, first longitudinal beam, 2-2, second longitudinal beam, 2-3, first cross beam, 2-4, second cross beam, 2-5, third longitudinal beam, 2-6, third cross beam, 2-7, fourth longitudinal beam, 3, top welding plate, 4, bottom welding plate, 5, top convex strip, 6, top gripping point, 7, bottom convex strip, 8, bottom gripping point, 9, overflow hole, 10, weight reduction groove, 11, operating handle. DETAILED DESCRIPTION

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, specific embodiments of the present application will be described below with reference to the drawings. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings and embodiments according to these drawings without creating any creative labor.

[0037] In order to make the drawing simple, only the parts related to the present application are shown in the drawings, which do not represent the actual structure of the product. In addition, in order to make the drawing simple and easy to understand, in some drawings, only one of the parts with the same structure or function is shown, or only one of them is marked. In this paper, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0038] In this paper, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0039] In addition, in the description of the present application, the terms "first", "second" and the like are only used for distinction and cannot be understood as indicating or implying relative importance.

[0040] Embodiment, refer to Figures 1-2 For an embodiment of the present application, a high-pressure-resistant fuel tank structure is proposed, which comprises a box body 1, a support 2, a top welding plate 3, a bottom welding plate 4, the box body 1 has a top wall 1-1 and a bottom wall 1-2; the support 2 is located inside the box body 1 and between the top wall 1-1 and the bottom wall 1-2; the top welding plate 3 is arranged at the upper end of the support 2 and welded with the top wall 1-1; the bottom welding plate 4 is arranged at the lower end of the support 2 and welded with the bottom wall 1-2, and the sum of the number of the top welding plate 3 and the bottom welding plate 4 is greater than or equal to three.

[0041] In the embodiment, the support 2 cooperates with the top welding plate 3 and the bottom welding plate 4 to play a role of supporting and dispersing pressure between the top wall 1-1 and the bottom wall 1-2, and multi-point welding makes the force transmission more uniform and stable, can disperse the downward pressure borne by the top wall 1-1 and the upward pressure borne by the bottom wall 1-2, avoids excessive local pressure, can enhance the high-pressure resistance of the overall structure of the tank 1, and does not need to greatly increase the thickness of the tank 1, can avoid the additional weight caused by thickening the material, so that the fuel tank still maintains a relatively light mass on the premise of ensuring the strength, is beneficial to transportation, installation and application on devices sensitive to weight. By reducing the material amount of the tank 1, the material cost can be saved.

[0042] Further, as shown in Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , the number of the top welding plate 3 is one, and the number of the bottom welding plate 4 is two. By setting one top welding plate 3 and two bottom welding plates 4 and keeping a certain distance between the two bottom welding plates 4, a more stable support layout can be formed in structure, which is helpful to more evenly disperse the pressure borne by the bottom of the tank 1, can avoid pressure concentration, and enhance the high-pressure resistance.

[0043] Further, as shown in Figure 5 and Figure 6 , the number of the top welding plate 3 and the bottom welding plate 4 is both two, the distance between the two top welding plates 3 is greater than or equal to 150 mm, and the distance between the two bottom welding plates 4 is greater than or equal to 150 mm. Two welding plates are used on the top and the bottom and kept a certain distance, so that the pressure is more balanced when transmitting and dispersing, which can further improve the pressure dispersion effect of the top wall 1-1 and the bottom wall 1-2, and enhance the stability and high-pressure resistance of the overall structure.

[0044] The structure of the support 2 has many kinds, and the following two structures are given by the utility model.

[0045] The first kind, as shown in Figure 3 and Figure 4As shown, the support 2 comprises a first longitudinal beam 2-1, a second longitudinal beam 2-2, a first cross beam 2-3, the upper end of the first longitudinal beam 2-1 is provided with a top welding plate 3, and the lower end of the first longitudinal beam 2-1 is provided with a bottom welding plate 4; the second longitudinal beam 2-2 is located on one side of the first longitudinal beam 2-1, and the lower end of the second longitudinal beam 2-2 is provided with a bottom welding plate 4; one end of the first cross beam 2-3 is connected with the first longitudinal beam 2-1, and the other end of the first cross beam 2-3 is connected with the upper end of the second longitudinal beam 2-2. The upper and lower ends of the first longitudinal beam 2-1 are connected with the top welding plate 3 and the bottom welding plate 4 respectively, bear the main vertical supporting force, and transfer the pressure between the top wall 1-1 and the bottom wall 1-2; the second longitudinal beam 2-2 works cooperatively with the first longitudinal beam 2-1, which can increase the stability of the bottom support, prevent the support 2 from tilting, and make the support 2 more stable.

[0046] As shown in Figure 3 and Figure 4 , the first cross beam 2-3 is inclined, and the end connected with the second longitudinal beam 2-2 is inclined downward, which not only can enhance the connection strength between the first longitudinal beam 2-1 and the second longitudinal beam 2-2, but also can convert part of the lateral force into vertical supporting force, and optimize the distribution of force. Both sides of the first longitudinal beam 2-1 have an operating handle 11, so that when welding, the operating handle 11 can be held, which is more convenient. In order to make the connection between the first cross beam 2-3 and the first longitudinal beam 2-1 more firm and reliable, the first cross beam 2-3 and the first longitudinal beam 2-1 can be integrally formed. A supporting plate can also be added, which is located below the first cross beam 2-3, one end of the supporting plate is connected with the first cross beam 2-3, and the other end of the supporting plate is inclined downward and connected with the first longitudinal beam 2-1.

[0047] The second kind, as shown in Figure 5 and Figure 6As shown, the support 2 includes a second crossbeam 2-4, a third longitudinal beam 2-5, a third crossbeam 2-6, and a fourth longitudinal beam 2-7. The second crossbeam 2-4 is located between the top wall 1-1 and the bottom wall 1-2. There are third longitudinal beams 2-5 at both ends of the second crossbeam 2-4, with the lower end of the third longitudinal beam 2-5 connected to the second crossbeam 2-4, and a top welding plate 3 at the upper end of the third longitudinal beam 2-5. There are third crossbeams 2-6 on both sides of the second crossbeam 2-4, with one end of the third crossbeam 2-6 connected to the second crossbeam 2-4. The upper end of the fourth longitudinal beam 2-7 is connected to the other end of the third crossbeam 2-6, and a bottom welding plate 4 is provided at the lower end of the fourth longitudinal beam 2-7. This complex combination of longitudinal and transverse beams can form multi-directional support and force transmission paths, more comprehensively and effectively distributing and bearing the pressure from the top wall 1-1 and the bottom wall 1-2, greatly improving the strength and high-pressure resistance of the structure. To ensure a more secure and reliable connection between the third crossbeam 2-6 and the second crossbeam 2-4, they can be integrally molded. Alternatively, a support plate can be added, located below the joint between the third crossbeam 2-6 and the second crossbeam 2-4, and fixedly connected to both the third crossbeam 2-6 and the second crossbeam 2-4.

[0048] Furthermore, such as Figure 7 As shown, it also includes a top protrusion 5, which is disposed on the top welding plate 3 and located on the side facing the top wall 1-1. There are multiple top protrusions 5, and all the top protrusions 5 are divided into at least two top protrusion groups. All the top protrusion groups are evenly arranged along the circumferential direction of the top welding plate 3. All the top protrusions 5 in the same top protrusion group are arranged radially along the top welding plate 3. The side of the top protrusion 5 facing the top wall 1-1 has multiple raised top gripping points 6, and all the top gripping points 6 are arranged along the length direction of the top protrusion 5.

[0049] Taking the example of dividing all the top protrusions 5 into four groups, the four groups are evenly arranged along the circumference of the top welding plate 3. The length of the top protrusions 5 in the same group gradually decreases from the middle to both sides. There is a gap between the top protrusions 5 of two adjacent groups, and they are set one-to-one. Each top protrusion 5 has multiple top gripping points 6 arranged along its length on the side facing the top wall 1-1. There is a gap between adjacent top gripping points 6. The design of the top protrusions 5 and the top gripping points 6 can increase the contact area and friction between the top welding plate 3 and the top wall 1-1, making the connection between the top welding plate 3 and the top wall 1-1 more stable, improving the efficiency and stability of pressure transmission, and enhancing the high pressure resistance of the housing 1.

[0050] Furthermore, such as Figure 8As shown, the bottom protrusions 7 are arranged on the bottom welding plate 4 and located on the side of the bottom welding plate 4 facing the bottom wall 1-2. The number of the bottom protrusions 7 is multiple. All the bottom protrusions 7 are divided into at least two groups of bottom protrusions. All the groups of bottom protrusions are arranged uniformly along the circumferential direction of the bottom welding plate 4. All the bottom protrusions 7 in the same group of bottom protrusions are arranged along the radial direction of the bottom welding plate 4. The length of the bottom protrusions 7 gradually decreases from one end close to the axis of the bottom welding plate 4 to the other end. The side of the bottom protrusions 7 facing the bottom wall 1-2 has multiple protruding bottom gripping points 8. All the bottom gripping points 8 are arranged along the length direction of the bottom protrusions 7.

[0051] For example, all the bottom protrusions 7 are divided into four groups of bottom protrusions. The four groups of bottom protrusions are arranged uniformly along the circumferential direction of the bottom welding plate 4. The length of all the bottom protrusions 7 in the same group of bottom protrusions gradually decreases from the middle to both sides. There is a gap between the bottom protrusions 7 of the adjacent two groups of bottom protrusions, which are arranged one by one. The side of each bottom protrusion 7 facing the bottom wall 1-2 has multiple bottom gripping points 8 arranged along the length direction of the bottom protrusion 7. There is a gap between the adjacent bottom gripping points 8. The design of the bottom protrusions 7 and the bottom gripping points 8 can increase the contact area and the friction between the bottom welding plate 4 and the bottom wall 1-2, so that the connection between the bottom welding plate 4 and the bottom wall 1-2 is more stable, which helps to more effectively disperse and withstand pressure and enhance the high-pressure resistance.

[0052] Further, as shown in Figure 7 and Figure 8 , the top welding plate 3 and the bottom welding plate 4 both have overflow holes 9. During the welding process, the excess welding material can flow out through the overflow holes 9, avoiding accumulation and affecting the welding quality. The uniformity and firmness of the welding can be better guaranteed, and the connection strength between the top welding plate 3 and the tank 1 and between the bottom welding plate 4 and the tank 1 can be improved.

[0053] Further, as shown in Figure 3 , Figure 4 , Figure 5 and Figure 6 , the bracket 2 has a weight-reducing groove 10. On the premise that the strength of the bracket 2 itself can meet the use demand, by reasonably designing the shape and position of the weight-reducing groove 10, part of the excess material on the bracket 2 can be removed, which can reduce the weight of the entire fuel tank, which is conducive to transportation, installation and application, and can save material cost. While meeting the demand for high-pressure resistance of the fuel tank, lightweight design can be realized.

[0054] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A high pressure resistant fuel tank structure, characterized by: The utility model relates to a box body (1) has top wall (1-1) and bottom wall (1-2), the support (2) is located inside the box body (1), and is located between top wall (1-1) and bottom wall (1-2), top welding plate (3) is arranged on the support (2) upper end, and is welded with top wall (1-1), bottom welding plate (4) is arranged in the support (2) lower end, and is welded with bottom wall (1-2), the sum of the number of top welding plate (3) and bottom welding plate (4) is equal to or greater than three. The number of top welding plate (3) is one, and the number of bottom welding plate (4) is two, and the spacing of two bottom welding plates (4) is equal to or greater than 150mm. The number of top welding plate (3) and bottom welding plate (4) is two, and the spacing of two top welding plates (3) is equal to or greater than 150mm, and the spacing of two bottom welding plates (4) is equal to or greater than 150mm. The support (2) includes, First longitudinal beam (2-1), the upper end of first longitudinal beam (2-1) is provided with top welding plate (3), and the lower end of first longitudinal beam (2-1) is provided with bottom welding plate (4), second longitudinal beam (2-2) is located on the side of first longitudinal beam (2-1), and the lower end of second longitudinal beam (2-2) is provided with bottom welding plate (4), first crossbeam (2-3) is connected with the one end of first longitudinal beam (2-1), and the other end of first crossbeam (2-3) is connected with the upper end of second longitudinal beam (2-2).

2. A high pressure fuel tank structure according to claim 1, characterized by: The first crossbeam (2-3) is inclinedly arranged, and the end connected with the second longitudinal beam (2-2) is inclined downward.

3. The high pressure fuel tank structure according to claim 1, characterized by: The support (2) includes, 4. The high pressure fuel tank structure according to claim 2, characterized by: Second crossbeam (2-4) is located between top wall (1-1) and bottom wall (1-2), third longitudinal beam (2-5) is arranged on both ends of second crossbeam (2-4), the lower end of third longitudinal beam (2-5) is connected with second crossbeam (2-4), and the upper end of third longitudinal beam (2-5) is provided with top welding plate (3), third crossbeam (2-6) is arranged on both sides of second crossbeam (2-4), and one end of third crossbeam (2-6) is connected with second crossbeam (2-4), Fourth longitudinal beam (2-7) is connected with the other end of third crossbeam (2-6) on the upper end, and the lower end of fourth longitudinal beam (2-7) is provided with bottom welding plate (4). ​ ​ 5. A high pressure fuel tank structure according to claim 4, characterized by: ​ 6. A high pressure fuel tank structure according to claim 3, characterized by: ​ ​ ​ ​ ​ 7. The high pressure fuel tank structure according to claim 1, characterized by: The top protruding strips (5) are arranged on the top welding plate (3) and located on the side of the top welding plate (3) facing the top wall (1-1), the number of the top protruding strips (5) is multiple, all the top protruding strips (5) are divided into at least two groups of top protruding strips, all the groups of top protruding strips are arranged uniformly along the circumferential direction of the top welding plate (3), all the top protruding strips (5) in the same group of top protruding strips are arranged along the radial direction of the top welding plate (3), and the side of the top protruding strip (5) facing the top wall (1-1) is provided with multiple protruding top gripping points (6) arranged along the length direction of the top protruding strip (5).

8. The high pressure fuel tank structure according to claim 1, characterized by: The bottom protruding strips (7) are arranged on the bottom welding plate (4) and located on the side of the bottom welding plate (4) facing the bottom wall (1-2), the number of the bottom protruding strips (7) is multiple, all the bottom protruding strips (7) are divided into at least two groups of bottom protruding strips, all the groups of bottom protruding strips are arranged uniformly along the circumferential direction of the bottom welding plate (4), all the bottom protruding strips (7) in the same group of bottom protruding strips are arranged along the radial direction of the bottom welding plate (4), and the side of the bottom protruding strip (7) facing the bottom wall (1-2) is provided with multiple protruding bottom gripping points (8) arranged along the length direction of the bottom protruding strip (7).

9. The high pressure fuel tank structure according to claim 1, characterized by: The top welding plate (3) and the bottom welding plate (4) are provided with overflow holes (9).

10. The high pressure fuel tank structure according to claim 1, characterized by: The bracket (2) is provided with a weight-reducing groove (10).

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