Composite material gas cylinder and automobile

Abstract

The utility model belongs to the technical field of automobiles, and discloses a composite material gas cylinder and an automobile. The composite material gas cylinder comprises a gas cylinder body and a positioning bandage, the gas cylinder body comprises a gas cylinder inner container, a carbon fiber composite material layer and a glass fiber composite material layer, the carbon fiber composite material layer is wound on the outer side of the gas cylinder inner container, and the glass fiber composite material layer is wound on the outer side of the carbon fiber composite material layer. A positioning ring table is arranged on the outer side of the glass fiber composite material layer in the circumferential direction of the gas cylinder body; the positioning bandage comprises a bandage body and rubber layers, the rubber layers are arranged on the side face and the bottom face of the bandage body, the positioning bandage is wound around the outer side of the glass fiber composite material layer in the circumferential direction of the gas cylinder body, and the side face of the positioning bandage is close to the side face of the positioning ring table. When an automobile is braked, the positioning annular table makes contact with the rubber layer on the side face of the positioning bandage to form limiting, so that axial movement of the gas cylinder body is limited, and the safety problems such as part damage and system leakage are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, in particular to a composite material gas cylinder and an automobile. Background Art

[0002] With the reduction of oil resources, alternative fuel vehicles have emerged and developed rapidly, and CNG vehicles are one of them. CNG vehicles are gas fuel vehicles that use natural gas as fuel. CNG vehicles are mainly composed of three systems: natural gas system, natural gas supply system and oil and gas fuel conversion system. The natural gas system is mainly composed of charging valves, high-pressure shut-off valves, gas cylinders, high-pressure pipelines, high-pressure joints, pressure gauges, pressure sensors and gas volume displays. Gas cylinders are important components in the natural gas system. At the same time, they are also a potential source of danger and cannot be bumped, so their installation and fixation are particularly important.

[0003] However, traditional gas cylinders are fixed and installed with straps. Since gas cylinders are heavy, such as a 170MPa hydrogen storage cylinder (capacity of 140L) weighing 100Kg, the inertia of the gas cylinder is very large when the car brakes. It is difficult to fix the gas cylinder only by the friction between the straps and the gas cylinder. When the gas cylinder undergoes axial displacement, the metal pipes and valves on the front and rear sides of the gas cylinder will be damaged, causing safety problems such as component damage and system leakage. Utility Model Content

[0004] The purpose of the utility model is to provide a composite material gas cylinder and a vehicle to solve the problems raised in the above background technology.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A composite material gas cylinder, comprising:

[0007] A gas cylinder body, the gas cylinder body comprising a gas cylinder liner, a carbon fiber composite material layer and a glass fiber composite material layer, the carbon fiber composite material layer is wound on the outside of the gas cylinder liner, the glass fiber composite material layer is wound on the outside of the carbon fiber composite material layer, and a positioning ring is provided on the outside of the glass fiber composite material layer along the circumference of the gas cylinder body;

[0008] The positioning strap comprises a strap body and a rubber layer, wherein the rubber layer is arranged on the side and bottom of the strap body, the positioning strap is arranged around the outer side of the glass fiber composite material layer along the circumference of the gas cylinder body, and the side of the positioning strap is close to the side of the positioning ring.

[0009] Optionally, the number of the positioning rings is two, and the number of the positioning straps is two.

[0010] Optionally, the two positioning straps are located between the two positioning ring platforms.

[0011] Optionally, the two positioning rings are located between the two positioning straps.

[0012] Optionally, the number of the positioning rings is four, the number of the positioning straps is two, and positioning rings are provided on both sides of each positioning strap.

[0013] Optionally, the thickness of the positioning strap is greater than the height of the positioning ring.

[0014] Optionally, the height of the positioning ring stage is 8 mm, and the width of the positioning ring stage is 10 mm.

[0015] Optionally, the distance between the side surface of the positioning ring platform and the side surface of the positioning strap is 1 mm.

[0016] Optionally, the positioning ring and the glass fiber composite material layer are integrally formed.

[0017] A car comprises the composite material gas cylinder.

[0018] Beneficial effects of the utility model:

[0019] The composite material gas cylinder provided by the utility model has a carbon fiber composite material layer that can enhance the structural strength of the gas cylinder body, and a glass fiber composite material layer that has environmental resistance and impact resistance, and can protect the gas cylinder body. By arranging rubber layers on the side and bottom of the strap body, when the gas cylinder body is subjected to inertia, the side of the positioning strap is force-limited by buffering through the rubber layer and the positioning ring, and finally the positioning ring and the positioning strap can be axially limited to each other. When the car brakes, the positioning ring and the rubber layer on the side of the positioning strap contact to form a limit, thereby limiting the axial movement of the gas cylinder body and reducing the occurrence of safety problems such as damage to components and system leakage. In addition, by arranging the positioning ring, it is easy to find the installation and fixing position of the positioning strap, so that the installation position of the gas cylinder body is more accurate, and the occurrence of problems such as subsequent inability or difficulty in installing auxiliary pipelines and valves is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying creative work.

[0021] Figure 1It is a structural schematic diagram of a composite material gas cylinder provided by the utility model;

[0022] Figure 2 It is a partial cross-sectional view of the composite material gas cylinder provided by the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the composite material gas cylinder in the first embodiment of the utility model. Figure 1 ;

[0024] Figure 4 This is a schematic diagram of the structure of the composite material gas cylinder in the first embodiment of the utility model. Figure 2 ;

[0025] Figure 5 It is a schematic structural diagram of a composite material gas cylinder in the second embodiment of the present utility model.

[0026] In the figure:

[0027] 100, gas cylinder body; 110, gas cylinder liner; 120, carbon fiber composite material layer; 130, glass fiber composite material layer; 140, positioning ring; 200, positioning strap; 210, strap body; 220, rubber layer. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0029] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0031] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0032] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0033] like Figures 1 to 5 As shown, the utility model provides a composite gas cylinder, including a gas cylinder body 100 and a positioning band 200. The gas cylinder body 100 includes a gas cylinder liner 110, a carbon fiber composite material layer 120 and a glass fiber composite material layer 130, the carbon fiber composite material layer 120 is wound on the outside of the gas cylinder liner 110, the glass fiber composite material layer 130 is wound on the outside of the carbon fiber composite material layer 120, and a positioning ring 140 is arranged on the outside of the glass fiber composite material layer 130 along the circumference of the gas cylinder body 100; the positioning band 200 includes a band body 210 and a rubber layer 220, the rubber layer 220 is arranged on the side and bottom of the band body 210, the positioning band 200 is arranged on the outside of the glass fiber composite material layer 130 along the circumference of the gas cylinder body 100, and the side of the positioning band 200 is close to the side of the positioning ring 140.

[0034] In the composite gas cylinder provided by the utility model, the carbon fiber composite material layer 120 can enhance the structural strength of the gas cylinder body 100, and the glass fiber composite material layer 130 has environmental resistance and impact resistance, and can play a role in protecting the gas cylinder body 100; by arranging the rubber layer 220 on the side and bottom surface of the strap body 210, when the gas cylinder body 100 is subjected to inertia, the side of the positioning strap 200 is buffered and limited by the rubber layer 220 and the positioning ring 140, and finally the positioning ring 140 can be axially limited to each other with the positioning strap 200. When the car brakes, the positioning ring 140 and the rubber layer 220 on the side of the positioning strap 200 contact to form a limit, thereby limiting the axial movement of the gas cylinder body 100, reducing the occurrence of safety problems such as component damage and system leakage, and by arranging the positioning ring 140, it is easy to find the installation and fixing position of the positioning strap 200, so that the installation position of the gas cylinder body 100 is more accurate, and the occurrence of problems such as subsequent inability or difficulty to install auxiliary pipelines and valves is reduced.

[0035] In some embodiments, the thickness of the positioning band 200 is greater than the height of the positioning ring 140. The height of the positioning ring 140 is 8 mm, and the width of the positioning ring 140 is 10 mm. The spacing between the side of the positioning ring 140 and the side of the positioning band 200 is 1 mm, which is used for manufacturing tolerance. Therefore, the maximum installation axial deviation of the cylinder body 100 is 1 mm, and the installation positioning is relatively accurate. The positioning ring 140 is integrally formed with the glass fiber composite material layer 130. When the cylinder body 100 is finally wrapped with the glass fiber composite material layer 130, in addition to wrapping the 3mm glass fiber composite material layer 130 with glass fiber composite material, the positioning ring 140 is wrapped with glass fiber composite material near the installation position of the positioning band 200. The winding process can use a more common circumferential winding method. After curing, the strength of the glass fiber composite material can reach 1500 MPa. The rubber layer 220 on the side of the band body 210 and the rubber layer 220 on the bottom are integrally formed. The band body 210 can be made of metal material.

[0036] Embodiment 1

[0037] like Figure 3 and Figure 4 As shown, according to the force requirement of the axial limit of the main gas cylinder, when the limit force requirement is small, the number of the positioning rings 140 is two, and the number of the positioning straps 200 is two. Specifically, two positioning straps 200 are located between two positioning rings 140, or two positioning rings 140 are located between two positioning straps 200.

[0038] Embodiment 2

[0039] like Figure 5As shown, according to the force requirement for axial limiting of the main gas cylinder, when the limiting force requirement is large, the number of positioning rings 140 is four, the number of positioning straps 200 is two, and positioning rings 140 are provided on both sides of each positioning strap 200.

[0040] The utility model also provides a car, comprising the composite material gas cylinder, wherein the positioning strap 200 is connected to the bottom plate of the car body by welding or bolts.

[0041] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A composite material gas cylinder, characterized in that: include: A gas cylinder body, the gas cylinder body comprising a gas cylinder liner, a carbon fiber composite material layer and a glass fiber composite material layer, the carbon fiber composite material layer is wound on the outside of the gas cylinder liner, the glass fiber composite material layer is wound on the outside of the carbon fiber composite material layer, and a positioning ring is provided on the outside of the glass fiber composite material layer along the circumference of the gas cylinder body; The positioning strap comprises a strap body and a rubber layer, wherein the rubber layer is arranged on the side and bottom of the strap body, the positioning strap is arranged around the outer side of the glass fiber composite material layer along the circumference of the gas cylinder body, and the side of the positioning strap is close to the side of the positioning ring.

2. The composite material gas cylinder according to claim 1, characterized in that: The number of the positioning rings is two, and the number of the positioning straps is two.

3. The composite material gas cylinder according to claim 2, characterized in that: The two positioning straps are located between the two positioning ring platforms.

4. The composite material gas cylinder according to claim 2, characterized in that: The two positioning rings are located between the two positioning straps.

5. The composite material gas cylinder according to claim 1, characterized in that: The number of the positioning rings is four, the number of the positioning straps is two, and positioning rings are arranged on both sides of each positioning strap.

6. The composite material gas cylinder according to claim 1, characterized in that: The thickness of the positioning strap is greater than the height of the positioning ring.

7. The composite material gas cylinder according to claim 1, characterized in that: The height of the positioning ring stage is 8 mm, and the width of the positioning ring stage is 10 mm.

8. The composite material gas cylinder according to claim 1, characterized in that: The distance between the side surface of the positioning ring stage and the side surface of the positioning strap is 1 mm.

9. The composite material gas cylinder according to claim 1, characterized in that: The positioning ring and the glass fiber composite material layer are integrally formed.

10. An automobile, characterized in that: A composite material gas cylinder comprising any one of claims 1 to 9.

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