Composite material double-cavity air reservoir and vehicle

Abstract

The invention discloses a composite material double-cavity air reservoir and a vehicle, and belongs to the technical field of air reservoirs. The composite material double-cavity air storage cylinder comprises a composite material protection structure, a partition plate and two inner containers, and the inner containers are made of plastic and provided with containing cavities used for storing air. The partition plate is arranged between the two inner containers, annular protruding parts are arranged on the two sides of the partition plate in the circumferential direction, and sealing end cover parts are arranged at the ends, away from the partition plate, of the inner containers. The inner container and the partition plate are wrapped with the composite material protection structure, the composite material protection structure comprises two sets of circumferential winding layers and two sets of oblique opposite-pulling winding layers, the circumferential winding layers are wound on the outer circumferential wall of the inner container, one ends of the oblique opposite-pulling winding layers are wound on the annular protruding part, and the other ends of the oblique opposite-pulling winding layers are wound on the sealing end cover part of the inner container. When pressure difference exists between the two inner containers, the risk of extrusion damage can be eliminated.

Description

Technical Field

[0001] The present invention relates to the technical field of air storage cylinders, and in particular to a composite material double-cavity air storage cylinder and a vehicle. Background Art

[0002] An air reservoir, also commonly referred to in the industry as a "tank," is essentially a gas storage "warehouse" within a vehicle's braking system. Its primary function is to properly store compressed air from the air compressor. This compressed gas has a wide range of critical applications during vehicle operation. From everyday horn systems to the crucial braking system, these systems rely on this high-pressure gas. Both emergency and routine braking require a large and stable supply of gas. Without an air reservoir, relying solely on the air compressor's real-time pumping capacity would be far from sufficient to meet the truck's gas needs under various operating conditions. Because the compressor's pumping speed and flow rate may not be able to respond to the demands of critical systems like brakes in an instant, the air reservoir plays a crucial role. It stores the air pumped by the compressor and then provides a rapid and stable supply when the vehicle needs it, ensuring the proper functioning of all systems at critical moments.

[0003] Commercial vehicles have regulatory requirements for dual-circuit braking systems and independent circuits for auxiliary air (clutch, gearbox, air seat, air suspension, air horn, etc.), and the layout space is very compact, so commercial vehicles are often equipped with dual-chamber air cylinders to save layout space.

[0004] However, when there is a pressure difference between the left and right air reservoirs, the air reservoir on the lower-pressure side will be deformed and damaged by the higher pressure transmitted from the other side. Once the air reservoir is deformed, it will not only affect its normal gas storage function, but also pose a serious threat to the safety and stability of the entire air brake system, thereby affecting the driving safety of the vehicle. Summary of the Invention

[0005] The object of the present invention is to provide a composite material double-chamber air storage cylinder and a vehicle, which can avoid the risk of extrusion damage when there is a pressure difference between the two inner tanks.

[0006] To achieve the above objectives, the following technical solutions are provided:

[0007] Composite double-chamber air receiver, comprising:

[0008] Two inner containers, each of which is made of plastic and has a receiving cavity for storing gas;

[0009] A partition is provided between the two inner containers, and an annular protrusion is circumferentially provided on both sides of the partition. A sealing end cover is provided at one end of the inner container away from the partition;

[0010] A composite material protection structure, which is coated on the inner liner and the partition, and includes two groups of circumferential winding layers and two groups of oblique tension winding layers. The circumferential winding layer is wound on the outer circumferential wall of the inner liner, one end of the oblique tension winding layer is wound on the annular protrusion, and the other end of the oblique tension winding layer is wound on the sealing end cover of the inner liner.

[0011] As an optional solution for a composite material double-chamber air storage cylinder, the fibers of the obliquely pulled winding layer include a first fiber bundle and a second fiber bundle, one end of the first fiber bundle and the second fiber bundle are both wound around the first structural portion of the annular protrusion, and the other end of the first fiber bundle and the second fiber bundle are both wound around the sealing end cover portion of the inner liner.

[0012] As an optional solution for a composite material double-chamber air storage cylinder, the fibers of the obliquely pulled winding layer also include a third fiber bundle and a fourth fiber bundle, one end of the third fiber bundle and the fourth fiber bundle are both wound around the second structural portion of the annular protrusion, and the other end of the third fiber bundle and the fourth fiber bundle are both wound around the sealing end cover portion of the inner liner.

[0013] As an optional solution for the composite material double-chamber air storage cylinder, the fibers of the circumferential winding layer include a fifth fiber bundle and a sixth fiber bundle, and the fifth fiber bundle and the sixth fiber bundle are both annularly wound on the outer peripheral wall of the inner liner.

[0014] As an optional solution of the composite material double-chamber air storage cylinder, the composite material double-chamber air storage cylinder further includes a water discharge switching valve, and the water discharge switching valve is communicated with the accommodating cavity.

[0015] As an optional solution for the composite material double-chamber air storage cylinder, the water discharge switch valve is arranged on the sealing end cover portion of the inner tank, and a hose is provided in the accommodating cavity, one end of the hose is connected to the water discharge switch valve.

[0016] As an optional solution for the composite material double-chamber air storage cylinder, the composite material double-chamber air storage cylinder further includes an air pressure detection connector, which is provided on the sealing end cover portion of the inner liner.

[0017] As an optional solution for the composite material double-chamber air storage cylinder, the water discharge switch valve is arranged on the outer peripheral wall of the inner tank.

[0018] As an optional solution for the composite material double-chamber air storage cylinder, spherical grooves are provided on the end surfaces on both sides of the partition, and the end of the inner liner away from the sealing end cover part abuts against the spherical groove.

[0019] A vehicle comprises a vehicle body and a composite material double-chamber air storage cylinder as described in any one of the above items, wherein the composite material double-chamber air storage cylinder is arranged on the vehicle body.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The composite dual-chamber air storage cylinder provided by the present invention incorporates a partition plate positioned between two inner bladders and a composite protective structure wrapped around the inner bladders and partition plate, forming an integrated structure. The circumferentially wound layer of the composite protective structure, located on the outer circumferential wall of the inner bladder, can withstand radial pressure radiating outward from the circumference of the inner bladder. The diagonally tensioned wrapping layers can withstand pressure from both sides of the inner bladder. When a pressure differential exists between the two bladders, this prevents pressure from one bladder from acting on the other, eliminating the risk of extrusion damage.

[0022] In the vehicle provided by the present invention, the composite material double-chamber air storage cylinder is arranged on the vehicle body. When there is a pressure difference between the two inner tanks, the pressure from one inner tank is prevented from acting on the other inner tank, eliminating the risk of extrusion damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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 describing 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 any creative work.

[0024] Figure 1 This is a schematic diagram of the exterior of a composite material double-chamber air storage cylinder according to an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the interior of a composite material double-chamber air storage cylinder according to an embodiment of the present invention;

[0026] Figure 3 Schematic diagram of the structure of the partition in an embodiment of the present invention;

[0027] Figure 4 Schematic diagram of the fiber bundle winding form of the circumferential winding layer and the oblique tension winding layer in an embodiment of the present invention.

[0028] Reference numerals:

[0029] 1. Inner tank; 2. Partition; 3. Composite material protection structure; 4. Drain valve; 5. Hose; 6. Air pressure detection connector;

[0030] 11. Outer peripheral wall; 12. Sealing end cover;

[0031] 21. annular protrusion; 211. first structural portion; 212. second structural portion; 22. spherical groove;

[0032] 31. Circumferential winding layer; 311. Fifth fiber bundle; 312. Sixth fiber bundle; 32. Oblique tension winding layer; 321. First fiber bundle; 322. Second fiber bundle; 323. Third fiber bundle; 324. Fourth fiber bundle. DETAILED DESCRIPTION

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0034] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0035] In the description of the present invention, it should be noted that, unless otherwise specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0036] The following describes embodiments of the present invention in detail. 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 only to explain the present invention and are not to be construed as limiting the present invention.

[0037] In order to avoid the risk of extrusion damage when there is a pressure difference between the two inner shells, this embodiment provides a composite material double-chamber air storage cylinder, which is combined with the following Figures 1 to 4 The specific contents of this embodiment are described in detail.

[0038] The composite material double-chamber gas storage cylinder in this embodiment includes a partition 2, a composite material protective structure 3 and two inner liners 1. The partition 2 is arranged between the two inner liners 1, and the composite material protective structure 3 is coated on the inner liners 1 and the partition 2. The inner liners 1 are made of plastic and have a accommodating cavity for storing gas. The two inner liners 1 can independently achieve the sealing of high-pressure gas. An annular protrusion 21 is circumferentially provided on both sides of the partition 2, and a sealing end cover 12 is provided at one end of the inner liners 1 away from the partition 2; the composite material protective structure 3 includes two groups of circumferential winding layers 31 and two groups of oblique tension winding layers 32. The circumferential winding layer 31 is wound on the outer peripheral wall 11 of the inner liners 1, one end of the oblique tension winding layer 32 is wound on the annular protrusion 21, and the other end of the oblique tension winding layer 32 is wound on the sealing end cover 12 of the inner liners 1. The composite material protection structure 3 adopts a fiber full winding molding process. The material of the composite material protection structure 3 is fiber and impregnating resin. The fiber material can be a reinforcing material such as glass fiber, aramid fiber and carbon fiber. The impregnating resin can be an epoxy resin, modified epoxy resin, or unsaturated resin system with added curing agent and accelerator. After being impregnated with the resin, the fiber is wound and cured on the surface of the inner liner 1 according to a certain winding line.

[0039] The composite dual-chamber air storage cylinder provided in this embodiment has a partition 2 disposed between two inner bladders 1, and a composite protective structure 3 wrapped around the inner bladders 1 and the partition 2, so that the inner bladders 1, the partition 2, and the composite protective structure 3 form an integrated structure. The circumferential wrapping layer 31 of the composite protective structure 3 is located on the outer circumferential wall 11 of the inner bladder 1. The circumferential wrapping layer 31 can withstand the pressure radiating outward from the circumference of the inner bladder 1. The diagonal tension wrapping layer 32 can withstand pressure from the left and right sides of the inner bladder 1. When there is a pressure difference between the two inner bladders 1, the pressure from one inner bladder 1 is prevented from acting on the other inner bladder 1, eliminating the risk of extrusion damage.

[0040] Optionally, the fibers of the obliquely tensioned winding layer 32 in this embodiment include a first fiber bundle 321 and a second fiber bundle 322, one end of each of the first fiber bundle 321 and the second fiber bundle 322 being wound around the first structural portion 211 of the annular raised portion 21, and the other end of each of the first fiber bundle 321 and the second fiber bundle 322 being wound around the sealed end cap portion 12 of the liner 1. The fibers of the obliquely tensioned winding layer 32 in this embodiment also include a third fiber bundle 323 and a fourth fiber bundle 324, one end of each of the third fiber bundle 323 and the fourth fiber bundle 324 being wound around the second structural portion 212 of the annular raised portion 21, and the other end of each of the third fiber bundle 323 and the fourth fiber bundle 324 being wound around the sealed end cap portion 12 of the liner 1. The first fiber bundle 321 and the second fiber bundle 322 are arranged crosswise with the third fiber bundle 323 and the fourth fiber bundle 324. The fibers of the circumferential winding layer 31 include a fifth fiber bundle 311 and a sixth fiber bundle 312 . The fifth fiber bundle 311 and the sixth fiber bundle 312 are both annularly wound around the outer peripheral wall 11 of the inner liner 1 .

[0041] The first working condition: When the pressure of the high-pressure gas inside the inner liner 1 on the right and the inner liner 1 on the left are the same, the pressure near the center of the partition 2 is offset by the pressure of the inner liner 1 on the right and the inner liner 1 on the left. Figure 4 As shown, taking the cross-sectional view of the inner liner 1 on the right as an example for analysis, the right side of the first structural portion 211 and the second structural portion 212 (two raised positions) of the partition 2 bear the leftward pressure of the high-pressure gas inside the inner liner 1, and the first fiber bundle 321, the second fiber bundle 322, the third fiber bundle 323 and the fourth fiber bundle 324 on the outside apply a rightward reaction force to the first structural portion 211 and the second structural portion 212 of the partition 2; at the same time, the first fiber bundle 321, the second fiber bundle 322, the third fiber bundle 323 and the fourth fiber bundle 324 on the outside apply a leftward reaction force to the sealing end cover portion 12 of the inner liner 1, offsetting the rightward pressure of the high-pressure gas inside the inner liner 1 on the inner surface of the sealing end cover portion 12; the fifth fiber bundle 311 and the sixth fiber bundle 312 bear the outward radial pressure in the circumferential direction of the inner liner 1. Based on the above analysis, when the pressure of the high-pressure gas inside the right and left bladders 1 is the same, the pressure on the bladder 1 in the central areas on both sides of the partition 2 is the same and cancels out. The first structural portion 211 and the second structural portion 212 of the partition 2 bear both the tension of the composite protective structure 3 and the pressure of the bladder 1. The inner surface of the bladder 1 bears the pressure of the high-pressure gas, while the outer surface of the bladder 1 bears the opposite pressure from the partition 2 and the composite protective structure 3, resulting in equal pressure inside and outside. For ease of understanding, the above analysis only selects the force in the cross-sectional view direction for analysis. In fact, the force analysis of the composite double-chamber gas storage cylinder is a spatial circumferential force analysis.

[0042] The second working condition: When the pressure inside the inner liner 1 on the right is greater than the pressure inside the inner liner 1 on the left, considering the extreme working condition, the high-pressure gas in the inner liner 1 on the left leaks completely, while the high-pressure gas in the inner liner 1 on the right does not leak. At this time, the inner liner 1 on the right exerts a leftward pressure on the partition 2, so the area near the center of the partition 2 is subjected to a greater leftward pressure. Since the partition 2 is thicker than the inner liner 1 and can withstand a greater pressure, the area near the center of the partition 2 exerts a rightward reaction force on the inner liner 1; the partition 2 is an integral structural member, and the pressure exerted on the area near the center of the partition 2 is transmitted to the annular protrusion 21 of the partition 2 through the partition 2 itself. The first structural portion 211 and the second structural portion 212 of the annular protrusion 21 transmit the leftward pressure exerted on the area near the center of the partition 2 to the first fiber bundle 321, the second fiber bundle 322, the third fiber bundle 323 and the fourth fiber bundle 324, so that the pressure inside the inner liner 1 on the right and the inner liner 1 on the left do not affect each other; the force analysis of the remaining positions is the same as the first working condition. For ease of understanding, the above analysis only selects the force in the cross-sectional view direction for analysis. In fact, the force analysis of the composite double-chamber air storage cylinder is a force analysis in the spatial circumferential direction.

[0043] The third working condition: when the pressure inside the inner liner 1 on the right is less than the pressure inside the inner liner 1 on the left, the force analysis of this working condition is exactly opposite to that of the second working condition, and will not be elaborated here.

[0044] Furthermore, the composite material double-chamber air storage cylinder further comprises a water discharge switch valve 4, which is communicated with the accommodating cavity. When water accumulates in the composite material double-chamber air storage cylinder of a commercial vehicle, the driver can use the water discharge switch valve 4 to discharge the water.

[0045] Optionally, the drain switch valve 4 is disposed on the sealing end cover 12 of the inner container 1, and a hose 5 is disposed in the accommodating cavity, one end of which is in communication with the drain switch valve 4. The hose 5 can be made of nylon. The water accumulated in the composite double-chamber air storage cylinder is blown out of the cylinder by the high-pressure gas in the cylinder through the nylon hose 5 connected to the drain switch valve 4 and then discharged into the atmosphere.

[0046] Optionally, the composite double-chamber air storage cylinder further includes an air pressure detection connector 6, which is provided on the sealing end cover 12 of the inner liner 1. By adding the air pressure detection connector 6, the gas pressure of the inner liner 1 can be detected in real time to meet the air pressure detection requirements.

[0047] In other embodiments, the drain switch valve 4 can also be provided on the outer peripheral wall 11 of the inner container 1. Specifically, the drain switch valve 4 is arranged at the bottom of the inner container 1, which can utilize the gravity of the accumulated water to promote the discharge of the accumulated water.

[0048] Furthermore, spherical grooves 22 are provided on the end surfaces on both sides of the partition 2, and the end of the inner liner 1 away from the sealing end cover 12 abuts against the spherical grooves 22. By adding spherical grooves 22 in the central area of ​​the partition 2, the pressure of the inner liner 1 can be evenly transferred to the partition 2, avoiding stress concentration.

[0049] This embodiment also provides a vehicle comprising a vehicle body and the aforementioned composite material dual-chamber air reservoir, which is mounted on the vehicle body. When a pressure difference exists between two inner bladders 1, the pressure from one inner bladder 1 is prevented from acting on the other inner bladder 1, thereby eliminating the risk of extrusion damage.

[0050] Note that the above are only preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. Composite material double-chamber air storage cylinder, characterized in that: include: Two inner containers (1), each of the inner containers (1) being made of plastic and having a receiving cavity for storing gas; A partition (2) is provided between the two inner containers (1), an annular protrusion (21) is circumferentially provided on both sides of the partition (2), and a sealing end cover (12) is provided at one end of the inner container (1) away from the partition (2); A composite material protection structure (3), the composite material protection structure (3) is coated on the inner liner (1) and the partition (2), the composite material protection structure (3) includes two groups of circumferential winding layers (31) and two groups of oblique tension winding layers (32), the circumferential winding layers (31) are wound on the outer peripheral wall (11) of the inner liner (1), one end of the oblique tension winding layer (32) is wound on the annular protrusion (21), and the other end of the oblique tension winding layer (32) is wound on the sealing end cover (12) of the inner liner (1).

2. The composite material double-chamber air storage cylinder according to claim 1, characterized in that: The fibers of the obliquely pulled winding layer (32) include a first fiber bundle (321) and a second fiber bundle (322), one end of the first fiber bundle (321) and the second fiber bundle (322) are both wound around the first structural portion (211) of the annular protrusion (21), and the other end of the first fiber bundle (321) and the second fiber bundle (322) are both wound around the sealing end cover portion (12) of the inner liner (1).

3. The composite material double-chamber air storage cylinder according to claim 2, characterized in that: The fibers of the obliquely tensioned winding layer (32) also include a third fiber bundle (323) and a fourth fiber bundle (324), one end of the third fiber bundle (323) and the fourth fiber bundle (324) are both wound around the second structural portion (212) of the annular protrusion (21), and the other end of the third fiber bundle (323) and the fourth fiber bundle (324) are both wound around the sealing end cover portion (12) of the inner liner (1).

4. The composite material double-chamber air storage cylinder according to claim 3, characterized in that: The fibers of the circumferential winding layer (31) include a fifth fiber bundle (311) and a sixth fiber bundle (312), and the fifth fiber bundle (311) and the sixth fiber bundle (312) are both annularly wound on the outer peripheral wall (11) of the inner liner (1).

5. The composite material double-chamber air storage cylinder according to claim 1, characterized in that: The composite material double-chamber air storage cylinder further comprises a water discharge switch valve (4), and the water discharge switch valve (4) is communicated with the accommodating cavity.

6. The composite material double-chamber air storage cylinder according to claim 5, characterized in that: The drain switch valve (4) is arranged on the sealing end cover (12) of the inner container (1), and a hose (5) is arranged in the accommodating cavity, and one end of the hose (5) is connected to the drain switch valve (4).

7. The composite material double-chamber air storage cylinder according to claim 6, characterized in that: The composite material double-chamber air storage cylinder further comprises an air pressure detection joint (6), and the air pressure detection joint (6) is arranged on the sealing end cover portion (12) of the inner liner (1).

8. The composite material double-chamber air storage cylinder according to claim 5, characterized in that: The water discharge switch valve (4) is arranged on the outer peripheral wall (11) of the inner container (1).

9. The composite material double-chamber air storage cylinder according to any one of claims 1 to 8, characterized in that: Spherical grooves (22) are provided on the end surfaces on both sides of the partition (2), and one end of the inner container (1) away from the sealing end cover (12) abuts against the spherical groove (22).

10. A vehicle, characterized in that The invention comprises a vehicle body and a composite material double-chamber air storage cylinder according to any one of claims 1 to 9, wherein the composite material double-chamber air storage cylinder is arranged on the vehicle body.

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