CN2469299Y - Cross winded compound high pressure gas bottle - Google Patents

Abstract

An orthogonally wound composite high-pressure gas cylinder, the outer surface of the inner lining of the cylinder is wound with reinforcing fibers, the reinforcing fibers are axially wound along the outer surface of the inner lining of the cylinder to form an axial layer, and the reinforcing fibers are also wound along the outer surface of the cylindrical inner lining of the cylinder The surface is wound in the circumferential direction to form a circumferential lay-up, and the winding direction of the reinforcing fibers of the two lay-ups is orthogonal; the hemispherical heads at both ends of the inner lining of the bottle are provided with upper and lower buckle covers, and the inner sides of the upper and lower buckle covers are concave. The surface is closely connected with the convex outer surface of the hemispherical head of the inner lining of the bottle; groove-shaped gaps are cut on the upper and lower buckle caps, and a corresponding number of barbs are formed, and the reinforcing fibers can be wound back and forth through the barbs to form a shaft. to the layup. It has the characteristics of light weight and high pressure resistance.

Description

An Orthogonally Wound Composite High Pressure Gas Cylinder

The utility model relates to a high-pressure gas cylinder, in particular to a composite high-pressure gas cylinder with orthogonal winding.

In the prior art, high-pressure gas cylinders are filled with gas or gas-liquid mixture, and have a large internal pressure. The internal pressure on the gas cylinder can be decomposed into two parts: one is distributed along the circumferential direction and is perpendicular to the inner wall of the cylinder, and the other is distributed along the axial direction and exerts pressure on the inner surface of the two ends of the cylinder. Generally, gas cylinders are made of steel, which is strong but heavy, and some are made of aluminum alloy, which is not strong enough. So people are looking for composite gas cylinders with lightweight materials and high pressure resistance. Commonly used composite gas cylinders adopt the oblique overlapping winding of reinforcing fibers along the outer wall of the cylinder around the two ends and forming a certain angle with the axis, plus the method of circumferential winding along the outer wall of the cylinder. Due to the phenomenon of oblique stretching and repeated overlapping of fibers in this kind of fiber winding reinforced structure, it not only wastes fibers and increases its own weight, but also fails to fully utilize the potential of high tensile strength of fibers, so the bottle body is resistant to pressure. The performance is not ideal.

The purpose of the utility model is to provide a light, high-pressure-resistant orthogonal winding composite high-pressure gas cylinder.

In order to achieve the above object, the technical solution of the utility model is to have a cylindrical bottle inner lining, and the outer surface of the inner lining of the bottle is wound with reinforcing fibers, which is characterized in that the reinforcing fibers are axially wound along the outer surface of the inner lining of the cylindrical bottle , constituting an axial lay-up, the reinforcing fibers are also wound along the circumferential direction of the outer surface of the inner lining of the bottle to form a circumferential lay-up, and the directions in which the reinforcing fibers of the two lay-ups are wound are orthogonal; the inner lining of the bottle The hemispherical heads at both ends are provided with two high-strength steel upper and lower buckle covers, and the inner concave surfaces of the upper and lower buckle covers are closely connected with the convex outer surfaces of the hemispherical heads lined with the bottle; A slot-shaped notch is cut on the lower buckle cover, and a corresponding number of barbs are formed, and the reinforcing fibers adhered to the resin are reciprocally wound through the barbs to form an axial layup;

The reinforcing fiber is carbon fiber, glass fiber or aramid fiber; the inner lining (1) of the bottle is aluminum alloy or titanium alloy material.

The utility model has the following advantages:

1. Light weight. The utility model adopts a bottle lining made of light alloy material (usually aluminum alloy), which plays a supporting role in preventing gas leakage and winding in the composite high-pressure gas cylinder. Due to the orthogonal winding of reinforcing fibers, the stress on the inner lining of the bottle is almost completely transferred to the buckle cover made of reinforced fibers and high-strength materials. Therefore, for high-pressure containers, the inner lining of the bottle The wall thickness can be thinned, which can greatly reduce its own weight.

2. Strong ability to withstand high pressure. In structure, the utility model winds the reinforced fiber orthogonally from the circumferential direction and the axial direction of the outer surface of the inner lining of the bottle, and the winding mode is more optimized. The stress along the circumferential direction is respectively borne by the fibers of the axial layer and the fibers of the layer in the circumferential direction, which fully exerts the reinforcing effect of the fibers, so it has the characteristics of high pressure resistance.

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a structural sectional view of the lower button cover of the present invention.

Below in conjunction with accompanying drawing, the utility model structure and working principle are described in further detail.

As shown in Figures 1 and 2, it has a cylindrical bottle inner lining, and the outer surface of the inner lining of the bottle is wound with reinforcing fibers, and the reinforcing fibers are axially wound along the outer surface of the inner lining of the bottle 1 to form an axial layer 4. The reinforcing fibers are also wound along the circumferential direction of the outer surface of the cylindrical bottle inner lining 1 to form a circumferential layer 3, and the directions in which the reinforcing fibers of the two layers are wound are orthogonal; The head is provided with two upper and lower buckle caps 2 and 5 made of high-strength steel material, and the inner concave surface of the upper and lower buckle caps 2 and 5 is closely connected with the convex outer surface of the bottle inner liner 1 hemispherical head ; The upper and lower buckle caps 2, 5 are cut with groove-shaped gaps, and a corresponding number of barbs are formed, and the reinforcing fibers adhered to the resin can be wound back and forth through the barbs to form an axial layer; the bottle described in this embodiment The inner lining 1 is made of aluminum alloy, and the reinforcing fibers are carbon fibers.

The working principle of the utility model is: after the cylindrical bottle inner liner 1 bears the internal pressure of gas or liquid, the stress along the axial direction and the stress along the circumferential direction are respectively formed by the reinforcing fibers of the axial lay-up 4 and the lay-up of the circumferential direction. 3's reinforcement fiber bears; the layer 3 composed of reinforcement fibers wound along the circumferential direction of the bottle inner lining 1 is used to bear the circumferential stress caused by the internal pressure of the cylinder, because the circumferential stress distribution at different positions along the cylinder is different, the winding The thickness of the layer 3 can be thickened or thinned accordingly, so as to effectively use the fiber and reduce the weight of the bottle itself. 2, 5 reinforcement, the concave surface of the upper and lower buckle caps 2, 5 is in close contact with the convex outer surface of the hemispherical head of the bottle inner liner 1 to transmit stress.

The inner lining 1 of the cylindrical bottle described in the utility model can also be made of light alloy materials such as titanium alloy; the fiber can also be made of glass fiber and aramid fiber; , The lower button cover 5 also establishes a flat bottom to cooperate with it.

Claims (3)

1. An orthogonally wound composite high-pressure gas cylinder has a cylindrical bottle inner liner, and the outer surface of the bottle inner liner is wound with reinforcing fibers, which is characterized in that: the reinforcing fibers are along the outer surface of the cylindrical bottle inner liner (1). Axially wound to form an axial lay-up (4), the reinforcing fiber is also wound along the circumferential direction of the outer surface of the bottle inner lining (1) to form a circumferential lay-up (3), the two lay-up reinforcing fibers are wound The direction is orthogonal; the hemispherical head at both ends of the inner lining of the bottle (1) is provided with two upper and lower buckle covers (2,5) of high-strength steel materials, and the upper and lower buckle covers (2,5 ) is closely connected with the convex outer surface of the hemispherical head of the inner lining of the bottle (1); groove-shaped gaps are cut on the upper and lower button covers (2, 5), and a corresponding number of barbs are formed , the reinforcing fibers adhered to the resin are wound back and forth through the barbs to form an axial layup. 2. The orthogonally wound composite high-pressure gas cylinder according to claim 1, wherein the reinforcing fiber is carbon fiber, glass fiber or aramid fiber. 3. The orthogonally wound composite high-pressure gas cylinder according to claim 1, characterized in that: the inner lining (1) of the cylinder is made of aluminum alloy or titanium alloy.

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