High-pressure hydrogen storage tank with carbon fiber reinforced structure

Abstract

The utility model discloses a high-pressure hydrogen storage tank with a carbon fiber reinforced structure, which comprises a fixed base, a hydrogen tank is arranged at the top end of the fixed base, two ends of the hydrogen tank are fixedly communicated with connecting pipelines, hose clamp mechanisms are mounted in the middles of the two connecting pipelines, and each hose clamp mechanism comprises a positioning ring, a first positioning sheet and a second positioning sheet. The top end of the positioning ring is in contact connection with the bottom end of the first positioning piece, the bottom end of the positioning ring is in contact connection with the top end of the second positioning piece, supporting pieces are fixedly installed at the four corners of the top end of the fixed base, and the hydrogen tank comprises an outer protection buffer layer, a fiber winding layer, a transition layer and a lining layer; according to the high-pressure hydrogen storage tank with the carbon fiber reinforced structure, the hose clamp mechanism is arranged to realize the bottleneck fixing structure within the diameter range of the bottle body, so that the diameter of the hydrogen bottle cannot be influenced, the constraining force on the longitudinal hydrogen bottle during collision is enhanced, and the safety coefficient is high.

Description

Technical Field

[0001] The utility model relates to the technical field of high-pressure hydrogen storage tanks, in particular to a high-pressure hydrogen storage tank with a carbon fiber reinforced structure. Background Art

[0002] The main function of a high-pressure hydrogen storage tank is to store and transport high-pressure hydrogen for use in the fields of energy, chemical industry, aerospace, etc. High-pressure hydrogen storage is a common hydrogen storage method, in which hydrogen is contained in a gas cylinder under high pressure (15.2-70.9 MPa) and can be directly released by adjusting the pressure reducing valve. This method is convenient and reliable, and is the most common and direct way to store hydrogen. With the development of materials science, high-pressure gas cylinders made of carbon fiber and aluminum composite materials have been developed, which greatly reduces the weight of the gas cylinders themselves and improves the capacity loading efficiency, making high-pressure hydrogen storage a more competitive on-board hydrogen storage method. For example, the demonstration fuel cell bus uses high-pressure hydrogen storage bottles to directly provide hydrogen sources for the car, with a cruising range of up to 250 kilometers. The application scenarios of high-pressure hydrogen storage bottles include fixed high-pressure hydrogen storage, on-board lightweight high-pressure hydrogen storage, and high-pressure hydrogen storage for transportation. In stationary hydrogen storage technology, steel hydrogen cylinders and steel pressure vessels are widely used due to their low cost and mature technology. Automotive hydrogen storage cylinders often use an aluminum alloy / plastic liner with a carbon fiber outer layer to reduce overall weight and improve structural strength. Transport high-pressure hydrogen storage cylinders are primarily used to transport hydrogen from its source to its destination or refueling station, using tubular trailers to hold the hydrogen. Although hydrogen storage tanks are the second most expensive component in hydrogen fuel cell vehicles and are also large in size and weight, they ensure the vehicle's range and must undergo multiple safety tests to ensure safety. The development of hydrogen storage tanks is of great significance to the application and development of hydrogen-powered vehicles.

[0003] However, traditional high-pressure hydrogen storage tanks have the following disadvantages:

[0004] Traditional high-pressure hydrogen storage tanks are fixed in the form of straps and use a spring mechanism to absorb the changes in appearance caused by changes in internal pressure. However, this method affects the diameter of the hydrogen bottle, especially because the cross-section of the central channel becomes smaller towards the rear, affecting the normal use of the high-pressure hydrogen storage tank. Utility Model Content

[0005] The purpose of the present utility model is to provide a high-pressure hydrogen storage tank with a carbon fiber reinforced structure to solve the problem of the traditional high-pressure hydrogen storage tank being fixed in the form of straps proposed in the above-mentioned background technology, and adopting a spring mechanism to absorb the changes in appearance caused by changes in internal pressure. However, this method affects the diameter of the hydrogen bottle, especially since the cross-section of the central channel toward the rear becomes smaller, affecting the normal use of the high-pressure hydrogen storage tank.

[0006] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a high-pressure hydrogen storage tank with a carbon fiber reinforced structure, comprising a fixed base, a hydrogen tank is provided at the top of the fixed base, both ends of the hydrogen tank are fixedly connected with connecting pipes, and the middle parts of the two connecting pipes are installed with a throat clamp mechanism, the throat clamp mechanism comprises a positioning ring, a first positioning piece and a second positioning piece, the top end of the positioning ring is in contact with and connected to the bottom end of the first positioning piece, the bottom end of the positioning ring is in contact with and connected to the top end of the second positioning piece, and the four corners of the top end of the fixed base are fixedly installed with supports, the hydrogen tank comprises an outer protective buffer layer, a fiber winding layer, a transition layer and an inner lining layer, the inner side of the outer protective buffer layer is fixedly connected to the outer side of the fiber winding layer, the inner side of the fiber winding layer is fixedly connected to the outer side of the transition layer, the inner side of the transition layer is fixedly connected to the outer side of the inner lining layer, the bottom end of the hydrogen tank is fixedly connected with an injection hose, and the middle part of the injection hose is fixedly installed with a safety valve.

[0007] Preferably, the four support members each include a height platform and two height plates, height plates are fixedly installed on both sides of the bottom end of the height platform, the bottom ends of the two height plates are fixedly connected to the fixed base, a support frame is fixedly installed on the top end of the height platform, the top end of the support frame is fixedly connected to the side opposite to the hydrogen tank, a reinforcement plate is fixedly installed at the connection between the support frame and the hydrogen tank, and the support member assembles the fixed base and the hydrogen tank together.

[0008] Preferably, a first threaded hole is provided on both sides of the top of the first positioning piece, and a second threaded hole is provided on both sides of the top of the second positioning piece. Assembly screws are threadedly connected between the two first threaded holes and the two second threaded holes. A sealing ring is provided on the outer side of the positioning ring, and the interior of the positioning ring is connected to the connecting pipe. A screw located on one side of the second threaded hole is threadedly connected on the second positioning piece. The user turns the assembly screw, and the thread on the surface of the assembly screw matches the thread on the inner wall of the first threaded hole and the thread on the inner wall of the second threaded hole, thereby assembling the first positioning piece and the second positioning piece together.

[0009] Preferably, the outer protective buffer layer is made of titanium-iron hydrogen storage alloy material, the fiber winding layer is made of carbon fiber material, the transition layer is made of polyamide material, and the inner lining layer is made of nylon material.

[0010] Preferably, both sides of the top of the hydrogen tank are fixedly mounted with hanging rings, and the user can fix the hydrogen tank through the hanging rings.

[0011] Preferably, a temperature sensor extending to the outside is fixedly installed in the middle of the hydrogen tank, and the temperature sensor senses the temperature of the hydrogen tank in real time.

[0012] Preferably, a filter is fixedly installed on one side of the inner wall of the two connecting pipes, and a pressure sensor extending to the outside is fixedly installed on the other side of the inner wall of the two connecting pipes. A one-way solenoid valve located on one side of the filter is fixedly installed on the two connecting pipes. The filter intercepts impurities in the hydrogen transported in the connecting pipes, and the pressure sensor senses the pressure of the connecting pipes in real time. The one-way solenoid valve opens the packaged hydrogen tank and transports the hydrogen to the use place through the connecting pipe to avoid backflow.

[0013] Compared with the existing technology, the beneficial effect of the present invention is: by setting a throat clamp mechanism to realize the bottleneck fixing structure within the bottle body diameter range, it will not affect the diameter of the hydrogen bottle, enhances the restraint force on the longitudinal hydrogen bottle in the event of a collision, and has a high safety factor. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a side view of the utility model;

[0015] Figure 2 This is a packaging diagram of the throat clamp mechanism of the utility model;

[0016] Figure 3 This is a cross-sectional view of the connecting pipe of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the hydrogen tank of the present invention.

[0018] In the figure: 1. Fixed base; 2. Support member; 21. Support frame; 22. Height platform; 23. Height plate; 3. Injection hose; 4. Safety valve; 5. Connecting pipe; 6. Hose clamp mechanism; 61. Positioning ring; 62. Sealing ring; 63. First positioning piece; 64. Second positioning piece; 65. Screw; 66. Assembly screw; 67. Second threaded hole; 68. First threaded hole; 7. Lifting ring; 8. Temperature sensor; 9. Filter; 10. One-way solenoid valve; 11. Pressure sensor; 12. Hydrogen tank; 121. Outer protective buffer layer; 122. Fiber winding layer; 123. Transition layer; 124. Inner lining layer. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0020] See also Figure 1-4The utility model provides a high-pressure hydrogen storage tank with a carbon fiber reinforced structure, including a fixed base 1, a hydrogen tank 12 is provided on the top of the fixed base 1, both ends of the hydrogen tank 12 are fixedly connected with a connecting pipe 5, and a throat clamp mechanism 6 is installed in the middle of the two connecting pipes 5. The throat clamp mechanism 6 includes a positioning ring 61, a first positioning piece 63 and a second positioning piece 64. The top end of the positioning ring 61 is in contact with the bottom end of the first positioning piece 63, and the bottom end of the positioning ring 61 is in contact with the top end of the second positioning piece 64. The fixed base 1 The four corners of the top are fixedly installed with support parts 2. The hydrogen tank 12 includes an outer protective buffer layer 121, a fiber winding layer 122, a transition layer 123 and an inner lining layer 124. The inner side of the outer protective buffer layer 121 is fixedly connected to the outer side of the fiber winding layer 122, the inner side of the fiber winding layer 122 is fixedly connected to the outer side of the transition layer 123, and the inner side of the transition layer 123 is fixedly connected to the outer side of the inner lining layer 124. The bottom end of the hydrogen tank 12 is fixedly connected to an injection hose 3, and a safety valve 4 is fixedly installed in the middle of the injection hose 3.

[0021] The four support members 2 each include a height platform 22 and two height plates 23. The height plates 23 are fixedly installed on both sides of the bottom end of the height platform 22. The bottom ends of the two height plates 23 are fixedly connected to the fixed base 1. The top of the height platform 22 is fixedly installed with a support frame 21. The top of the support frame 21 is fixedly connected to the side opposite to the hydrogen tank 12. A reinforcement plate is fixedly installed at the connection between the support frame 21 and the hydrogen tank 12. The support member 2 assembles the fixed base 1 and the hydrogen tank 12 together.

[0022] A first threaded hole 68 is provided on both sides of the top of the first positioning piece 63, and a second threaded hole 67 is provided on both sides of the top of the second positioning piece 64. Assembly screws 66 are threadedly connected between the two first threaded holes 68 and the two second threaded holes 67. A sealing ring 62 is provided on the outer side of the positioning ring 61. The interior of the positioning ring 61 is connected to the connecting pipe 5. A screw 65 located on one side of the second threaded hole 67 is threadedly connected to the second positioning piece 64. The user turns the assembly screw 66, and the thread on the surface of the assembly screw 66 matches the thread on the inner wall of the first threaded hole 68 and the thread on the inner wall of the second threaded hole 67, so as to assemble the first positioning piece 63 and the second positioning piece 64 together.

[0023] The outer protective buffer layer 121 is made of titanium-iron hydrogen storage alloy material, the fiber winding layer 122 is made of carbon fiber material, the transition layer 123 is made of polyamide material, and the inner lining layer 124 is made of nylon material.

[0024] Hanging rings 7 are fixedly installed on both sides of the top of the hydrogen tank 12, and the user can fix the hydrogen tank 12 through the hanging rings 7.

[0025] A temperature sensor 8 extending to the outside is fixedly installed in the middle of the hydrogen tank 12 , and the temperature sensor 8 senses the temperature of the hydrogen tank 12 in real time.

[0026] A filter 9 is fixedly installed on one side of the inner wall of the two connecting pipes 5, and a pressure sensor 11 extending to the outside is fixedly installed on the other side of the inner wall of the two connecting pipes 5. A one-way solenoid valve 10 is fixedly installed on the two connecting pipes 5 on one side of the filter 9. The filter 9 intercepts impurities in the hydrogen transported in the connecting pipes 5, and the pressure sensor 11 senses the pressure of the connecting pipes 5 in real time. The one-way solenoid valve 10 opens the packaged hydrogen tank 12 and transports the hydrogen in the connecting pipe 5 to the place of use through the connecting pipe 5 to avoid backflow.

[0027] When the embodiment of the present application is in use: the user can fix the hydrogen tank 12 through the hanging ring 7, and the hydrogen in the hydrogen tank 12 is injected into the hydrogen tank 12 through the injection hose 3. Then, the hydrogen in the hydrogen tank 12 is transported to the place of use through the connecting pipe 5. The filter 9 intercepts impurities in the hydrogen transported in the connecting pipe 5. The pressure sensor 11 senses the pressure of the connecting pipe 5 in real time. The one-way solenoid valve 10 opens the package and the hydrogen in the hydrogen tank 12 is transported to the place of use through the connecting pipe 5 to avoid backflow. The temperature sensor 8 senses the temperature of the hydrogen tank 12 in real time. The user twists the assembly screw 66. The thread on the surface of the assembly screw 66 matches the thread on the inner wall of the first threaded hole 68 and the thread on the inner wall of the second threaded hole 67, so that the first positioning piece 63 and the second positioning piece 64 are assembled together, so that the positioning ring 61 is fixed to the connecting pipe 5.

[0028] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-pressure hydrogen storage tank with a carbon fiber reinforced structure, comprising a fixed base (1), characterized in that: The top of the fixed base (1) is provided with a hydrogen tank (12), both ends of the hydrogen tank (12) are fixedly connected with connecting pipes (5), the middle of the two connecting pipes (5) are both installed with a throat clamp mechanism (6), the throat clamp mechanism (6) includes a positioning ring (61), a first positioning piece (63) and a second positioning piece (64), the top of the positioning ring (61) is in contact with the bottom of the first positioning piece (63), the bottom of the positioning ring (61) is in contact with the top of the second positioning piece (64), and the four corners of the top of the fixed base (1) are fixedly installed with support members (2 ), the hydrogen tank (12) includes an outer protective buffer layer (121), a fiber winding layer (122), a transition layer (123) and an inner lining layer (124), the inner side of the outer protective buffer layer (121) is fixedly connected to the outer side of the fiber winding layer (122), the inner side of the fiber winding layer (122) is fixedly connected to the outer side of the transition layer (123), the inner side of the transition layer (123) is fixedly connected to the outer side of the inner lining layer (124), the bottom end of the hydrogen tank (12) is fixedly connected to an injection hose (3), and a safety valve (4) is fixedly installed in the middle of the injection hose (3).

2. The high-pressure hydrogen storage tank with a carbon fiber reinforced structure according to claim 1, characterized in that: The four support members (2) each include a height platform (22) and two height plates (23), both sides of the bottom end of the height platform (22) are fixedly mounted with height plates (23), the bottom ends of the two height plates (23) are fixedly connected to the fixed base (1), a support frame (21) is fixedly mounted on the top end of the height platform (22), the top end of the support frame (21) is fixedly connected to the side facing the hydrogen tank (12), and a reinforcement plate is fixedly mounted at the connection between the support frame (21) and the hydrogen tank (12).

3. The high-pressure hydrogen storage tank with a carbon fiber reinforced structure according to claim 1, characterized in that: A first threaded hole (68) is provided on both sides of the top of the first positioning piece (63), and a second threaded hole (67) is provided on both sides of the top of the second positioning piece (64). Assembly screws (66) are threadedly connected between the two first threaded holes (68) and the two second threaded holes (67). A sealing ring (62) is sleeved on the outer side of the positioning ring (61). The interior of the positioning ring (61) is connected to the connecting pipe (5). A screw (65) located on one side of the second threaded hole (67) is threadedly connected to the second positioning piece (64).

4. The high-pressure hydrogen storage tank with a carbon fiber reinforced structure according to claim 1, characterized in that: The outer protective buffer layer (121) is made of titanium-iron hydrogen storage alloy material, the fiber winding layer (122) is made of carbon fiber material, the transition layer (123) is made of polyamide material, and the inner lining layer (124) is made of nylon material.

5. The high-pressure hydrogen storage tank with a carbon fiber reinforced structure according to claim 1, characterized in that: Both sides of the top of the hydrogen tank (12) are fixedly mounted with hanging rings (7).

6. The high-pressure hydrogen storage tank with a carbon fiber reinforced structure according to claim 1, characterized in that: A temperature sensor (8) extending to the outside is fixedly mounted in the middle of the hydrogen tank (12).

7. The high-pressure hydrogen storage tank with a carbon fiber reinforced structure according to claim 1, characterized in that: A filter (9) is fixedly mounted on one side of the inner wall of each of the two connecting pipes (5), a pressure sensor (11) extending to the outside is fixedly mounted on the other side of the inner wall of each of the two connecting pipes (5), and a one-way solenoid valve (10) located on one side of the filter (9) is fixedly mounted on each of the two connecting pipes (5).

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