Plastic liner composite material high-pressure hydrogen storage cylinder

Abstract

The utility model relates to the technical field of high-pressure hydrogen storage cylinders, in particular to a plastic liner composite material high-pressure hydrogen storage cylinder, which comprises a plastic liner, a metal coating, a thermoplastic resin layer, a carbon fiber composite layer and a sealing unit, the metal coating is fixedly connected with the thermoplastic resin layer and located on the inner wall of the thermoplastic resin layer, and the carbon fiber composite layer is fixedly connected with the plastic inner container and located on the outer wall of the plastic inner container. By adopting the metal coating, the penetration resistance of the plastic inner container is improved, meanwhile, the problems that the plastic inner container is poor in heat conductivity and prone to generating static electricity are solved, the thermoplastic resin layer has elasticity and toughness, the plastic inner container is wound and wrapped through the carbon fiber composite layer, the strength quality of the plastic inner container is improved, the carbon fiber material cost is lower, and the service life of the plastic inner container is prolonged. And the use cost is reduced, so that the permeability resistance and the quality strength of the device are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of high-pressure hydrogen storage cylinders, in particular to a high-pressure hydrogen storage cylinder made of a plastic inner liner composite material. Background Art

[0002] Hydrogen energy is a highly efficient clean energy source, with advantages such as rich sources, cleanliness, environmental protection, and being storable and transportable. Vehicle-mounted hydrogen storage technology is the key to the development of hydrogen energy vehicles. Currently, the most important component in vehicle-mounted hydrogen storage systems is the hydrogen storage cylinder, and the inner liner in the hydrogen storage cylinder is the core component.

[0003] In the prior art, high-pressure hydrogen storage cylinders made of plastic inner liner composite materials use polymer materials as the inner liner, and are fully wound with carbon fiber composite materials on the outside to enhance their pressure-bearing capacity.

[0004] However, in the aforementioned prior art, the plastic non-metallic inner liner has poor anti-permeability and unstable quality. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a high-pressure hydrogen storage cylinder made of a plastic inner liner composite material, which solves the problems of poor anti-permeability and unstable quality of the plastic non-metallic inner liner in the prior art.

[0006] To achieve the above purpose, the utility model provides a high-pressure hydrogen storage cylinder made of a plastic inner liner composite material, including a plastic inner liner, a metal coating, a thermoplastic resin layer, a carbon fiber composite layer, and a sealing unit. The thermoplastic resin layer is fixedly connected to the plastic inner liner and is located on the inner wall of the plastic inner liner. The metal coating is fixedly connected to the thermoplastic resin layer and is located on the inner wall of the thermoplastic resin layer. The carbon fiber composite layer is fixedly connected to the plastic inner liner and is located on the outer wall of the plastic inner liner.

[0007] Among them, the sealing unit includes an embedded base and a valve. The inner wall of the embedded base has a first thread, and the valve has a second thread. The embedded base is arranged at the right end of the plastic inner liner, the valve is arranged inside the embedded base, and the first thread is adapted to the second thread.

[0008] Among them, the high-pressure hydrogen storage cylinder made of a plastic inner liner composite material further includes an elastic sealing ring. The elastic sealing ring is fixedly connected to the inside of the embedded base and contacts the valve.

[0009] Among them, the high-pressure hydrogen storage cylinder made of a plastic inner liner composite material further includes a connection layer and an outer protective layer. The connection layer is arranged on the outer wall of the carbon fiber composite layer, and the outer protective layer is arranged on the outer wall of the carbon fiber composite layer.

[0010] Among them, the plastic inner liner composite high-pressure hydrogen storage cylinder further includes a soft cushion layer, and the soft cushion layer is arranged on the outer wall of the outer protective layer.

[0011] For a plastic inner liner composite high-pressure hydrogen storage cylinder of the present utility model, the thermoplastic resin layer is fixedly connected to the plastic inner liner and is located on the inner wall of the plastic inner liner. The metal coating layer is fixedly connected to the thermoplastic resin layer and is located on the inner wall of the thermoplastic resin layer. The carbon fiber composite layer is fixedly connected to the plastic inner liner and is located on the outer wall of the plastic inner liner. By adopting the metal coating layer, the anti-permeability of the plastic inner liner is improved, and at the same time, problems such as poor thermal conductivity and easy generation of static electricity of the plastic inner liner are solved, and the thickness is not greater than 0.7 mm. The thermoplastic resin layer has elasticity and toughness, which improves the anti-thermal expansion coefficient of the device. And the plastic inner liner is wound and wrapped by the carbon fiber composite layer to improve the strength and quality of the plastic inner liner, and the cost of the carbon fiber material is lower, reducing the use cost. Thereby, the anti-permeability and quality strength of the device are improved. Brief Description of the Drawings

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art.

[0013] Figure 1 is the overall structural schematic diagram of the present utility model.

[0014] Figure 2 is the left view of the overall of the present utility model.

[0015] Figure 3 is of the present utility model Figure 2 sectional view taken along line A-A.

[0016] Figure 4 is of the present utility model Figure 3 enlarged partial structural view at position B.

[0017] 101 - plastic inner liner, 102 - metal coating layer, 103 - thermoplastic resin layer, 104 - carbon fiber composite layer, 105 - first thread, 106 - elastic sealing ring, 107 - connecting layer, 108 - outer protective layer, 109 - soft cushion layer, 110 - embedded base, 111 - valve, 112 - second thread. Detailed Description of the Embodiments

[0018] The following will describe in detail the embodiments of the present utility model. The examples of the embodiments are shown in the drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present utility model and should not be construed as a limitation to the present utility model.

[0019] Please refer toFigures 1 to 4 , wherein, Figure 1 is a schematic structural view of the whole of the present utility model, Figure 2 is a left view of the whole of the present utility model, Figure 3 is of the present utility model Figure 2 cross-sectional view taken along line A-A, Figure 4 is of the present utility model Figure 3 enlarged view of the partial structure at B.

[0020] The present utility model provides a high-pressure hydrogen storage cylinder with a plastic inner liner composite material, which includes a plastic inner liner 101, a metal coating 102, a thermoplastic resin layer 103, a carbon fiber composite layer 104, a sealing unit, an elastic sealing ring 106, a connecting layer 107, an outer protective layer 108 and a soft cushion layer 109. The sealing unit includes an embedded base 110 and a valve 111. The inner wall of the embedded base 110 has a first thread 105, and the valve 111 has a second thread 112.

[0021] For this specific embodiment, by adopting the metal coating 102, the anti-permeability of the plastic inner liner 101 is improved, and at the same time, problems such as poor thermal conductivity and easy generation of static electricity of the plastic inner liner 101 are solved, and the thickness is not greater than 0.7 mm. The thermoplastic resin layer 103 has elasticity and toughness, which improves the anti-thermal expansion coefficient of the device. And the plastic inner liner 101 is wound and wrapped by the carbon fiber composite layer 104 to improve the strength and quality of the plastic inner liner 101, and the cost of the carbon fiber material is lower, reducing the use cost. Thus, the anti-permeability and quality strength of the device are improved. When it is necessary to exhaust and release gas, the valve 111 can be disassembled. Through the cooperation of the first thread 105 and the second thread 112, the valve 111 is more firmly arranged inside the embedded base 110, avoiding the situation of shaking and falling off. The sealing effect of the device is improved through the elastic sealing ring 106. When there is pressure inside the plastic inner liner 101, the elastic sealing ring 106 prevents the internal hydrogen from leaking. The outer protective layer 108 is connected and fixed to the carbon fiber composite layer 104 through the connecting layer 107. The plastic inner liner 101 is protected by the outer protective layer 108 to avoid damage to the plastic inner liner 101 and the carbon fiber composite layer 104 when being externally collided, resulting in the leakage of internal hydrogen. Through the soft cushion layer 109, it can also play a buffering role when the outer protective layer 108 is collided, thereby reducing the impact damage received by the outer protective layer 108, making it more durable and improving the service life.

[0022] Among them, the thermoplastic resin layer 103 is fixedly connected to the plastic inner liner 101 and is located on the inner wall of the plastic inner liner 101. The metal coating layer 102 is fixedly connected to the thermoplastic resin layer 103 and is located on the inner wall of the thermoplastic resin layer 103. The carbon fiber composite layer 104 is fixedly connected to the plastic inner liner 101 and is located on the outer wall of the plastic inner liner 101. By adopting the metal coating layer 102, the anti-permeability of the plastic inner liner 101 is improved, and at the same time, problems such as poor thermal conductivity and easy generation of static electricity of the plastic inner liner 101 are solved, and the thickness is not greater than 0.7 mm. The thermoplastic resin layer 103 has elasticity and toughness, which improves the coefficient of thermal expansion resistance of the device. And by winding and wrapping the plastic inner liner 101 with the carbon fiber composite layer 104, the strength and quality of the plastic inner liner 101 are improved, and the cost of the carbon fiber material is lower, reducing the use cost. Thereby, the anti-permeability and quality strength of the device are improved.

[0023] Secondly, the inner wall of the embedded base 110 has a first thread 105, and the valve 111 has a second thread 112. The embedded base 110 is arranged at the right end of the plastic inner liner 101, and the valve 111 is arranged inside the embedded base 110, and the first thread 105 is adapted to the second thread 112. When exhaust gas is needed, the valve 111 can be disassembled. Through the cooperation of the first thread 105 and the second thread 112, the valve 111 is more firmly arranged inside the embedded base 110, avoiding the situation of shaking and falling off.

[0024] At the same time, the elastic sealing ring 106 is fixedly connected to the inside of the embedded base 110, and the elastic sealing ring 106 contacts the valve 111. The sealing effect of the device is improved through the elastic sealing ring 106. When there is pressure inside the plastic inner liner 101, the elastic sealing ring 106 prevents the internal hydrogen from leaking.

[0025] In addition, the connecting layer 107 is arranged on the outer wall of the carbon fiber composite layer 104, and the outer protective layer 108 is arranged on the outer wall of the carbon fiber composite layer 104. The outer protective layer 108 is connected and fixed to the carbon fiber composite layer 104 through the connecting layer 107. The plastic inner liner 101 is protected through the outer protective layer 108 to avoid damage to the plastic inner liner 101 and the carbon fiber composite layer 104 when being externally collided, thereby preventing the internal hydrogen from leaking.

[0026] Moreover, the soft cushion layer 109 is disposed on the outer wall of the outer protective layer 108. Through the soft cushion layer 109, it can also play a buffering role when the outer protective layer 108 is collided, thereby reducing the impact damage received by the outer protective layer 108, making it more durable and increasing the service life.

[0027] When using the high-pressure hydrogen storage bottle with the plastic inner liner composite material of the present utility model, by adopting the metal coating layer 102, the anti-permeability of the plastic inner liner 101 is improved, and at the same time, problems such as poor thermal conductivity and easy generation of static electricity of the plastic inner liner 101 are solved, and the thickness is not greater than 0.7 mm. The thermoplastic resin layer 103 has elasticity and toughness, which improves the coefficient of thermal expansion resistance of the device. And the plastic inner liner 101 is wound and wrapped by the carbon fiber composite layer 104 to improve the strength and quality of the plastic inner liner 101, and the cost of the carbon fiber material is lower, reducing the use cost. Thus, the anti-permeability and quality strength of the device are improved. When it is necessary to exhaust and deflate, the valve 111 can be disassembled. Through the cooperation of the first thread 105 and the second thread 112, the valve 111 is more firmly arranged inside the embedded base 110 to avoid the situation of shaking and falling off. The sealing effect of the device is improved by the elastic sealing ring 106. When there is pressure inside the plastic inner liner 101, the elastic sealing ring 106 prevents the internal hydrogen from leaking. The outer protective layer 108 is connected and fixed to the carbon fiber composite layer 104 through the connecting layer 107. The outer protective layer 108 protects the plastic inner liner 101 to avoid damage to the plastic inner liner 101 and the carbon fiber composite layer 104 when being externally collided, resulting in the leakage of internal hydrogen. Through the soft cushion layer 109, it can also play a buffering role when the outer protective layer 108 is collided, thereby reducing the impact damage received by the outer protective layer 108, making it more durable and increasing the service life.

[0028] What is disclosed above is only one or more preferred embodiments of the present application, and the scope of rights of the present application cannot be limited thereby. Those of ordinary skill in the art can understand the entire or partial processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present application still fall within the scope covered by the present application.

Claims

1. A plastic liner composite material high pressure hydrogen storage bottle, characterized in that: It includes a plastic liner, a metal coating, a thermoplastic resin layer, a carbon fiber composite layer and a sealing unit; The thermoplastic resin layer is fixedly connected to the plastic liner and is located on the inner wall of the plastic liner. The metal plating layer is fixedly connected to the thermoplastic resin layer and is located on the inner wall of the thermoplastic resin layer. The carbon fiber composite layer is fixedly connected to the plastic liner and is located on the outer wall of the plastic liner.

2. The plastic liner composite material high pressure hydrogen storage bottle according to claim 1, characterized in that: The sealing unit includes an embedded base and a valve, the inner wall of the embedded base has a first thread, the valve has a second thread, the embedded base is arranged at the right end of the plastic liner, the valve is arranged inside the embedded base, and the first thread is adapted to the second thread.

3. The plastic liner composite material high pressure hydrogen storage bottle according to claim 2, characterized in that: The plastic liner composite material high-pressure hydrogen storage bottle also includes an elastic sealing ring, which is fixedly connected to the inside of the embedded base and contacts the valve.

4. The plastic liner composite material high pressure hydrogen storage bottle according to claim 3, characterized in that: The plastic liner composite material high-pressure hydrogen storage bottle also includes a connecting layer and an outer protective layer. The connecting layer is arranged on the outer wall of the carbon fiber composite layer, and the outer protective layer is arranged on the outer wall of the carbon fiber composite layer.

5. The plastic liner composite material high pressure hydrogen storage bottle according to claim 4, characterized in that: The plastic liner composite material high-pressure hydrogen storage bottle also includes a soft cushion layer, which is arranged on the outer wall of the outer protective layer.

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