High-pressure inflation pipeline structure wound on IV-type hydrogen storage bottle inner container

Abstract

The utility model discloses a high-pressure inflation pipeline structure wound on an IV-type hydrogen storage cylinder inner container, which comprises a nitrogen cylinder, the output end of the nitrogen cylinder is sequentially connected with a high-pressure reducing valve, a one-way valve, a low-pressure reducing valve, a pressure release valve, a pressure gauge and a stop valve through a high-pressure connecting pipe, and the stop valve is connected with the IV-type hydrogen storage cylinder inner container. The high-pressure inflation pipeline is provided with the high-pressure reducing valve, the one-way valve, the low-pressure reducing valve, the pressure release valve, the pressure gauge and the stop valve, so that the functions of monitoring, adjusting and pressure release of the internal pressure during winding of the IV-type hydrogen storage cylinder liner can be realized, and the problem that the IV-type hydrogen storage cylinder liner is expanded and broken due to overlarge pressure or insufficient support due to oversmall pressure during winding and inflation is avoided; and the normal use and the use safety of the IV-type hydrogen storage bottle liner winding are ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of winding of the inner liner of type Ⅳ hydrogen storage cylinders, and particularly relates to a high-pressure charging pipeline structure for winding the inner liner of a type Ⅳ hydrogen storage cylinder. Background Art

[0002] Hydrogen storage technology is a key technology in the development of hydrogen energy. The plastic of type Ⅳ hydrogen storage cylinders has become a research hotspot worldwide due to its light weight and fatigue resistance. During the winding process of type Ⅳ cylinders, the tension of the fibers will cause the plastic inner liner to buckle and collapse, affecting the winding and performance of the inner liner. Therefore, it is necessary to pressurize the inside of the plastic inner liner to eliminate the problem of buckling and collapse of the inner liner.

[0003] The existing high-pressure charging pipeline for winding the inner liner of type Ⅳ hydrogen storage cylinders cannot monitor the pipeline pressure and adjust the operation in real time, resulting in the situation of bursting or insufficient pressure when winding the inner liner of type Ⅳ hydrogen storage cylinders, affecting the winding and use of the inner liner of type Ⅳ hydrogen storage cylinders. For this reason, we propose a high-pressure charging pipeline structure for winding the inner liner of type Ⅳ hydrogen storage cylinders. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a high-pressure charging pipeline structure for winding the inner liner of a type Ⅳ hydrogen storage cylinder to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A high-pressure charging pipeline structure for winding the inner liner of a type Ⅳ hydrogen storage cylinder, including a nitrogen cylinder. The output end of the nitrogen cylinder is sequentially connected with a high-pressure pressure reducing valve, a one-way valve, a low-pressure pressure reducing valve, a pressure relief valve, a pressure gauge and a stop valve through a high-pressure connecting pipe, and the stop valve is connected to the inner liner of the type Ⅳ hydrogen storage cylinder.

[0006] Preferably, both the pressure relief valve and the pressure gauge are connected and communicated with the high-pressure connecting pipe through a tee joint, and the joints of the pressure relief valve and the pressure gauge with the tee joint are hermetically connected through a sealing ring or raw tape.

[0007] Preferably, the tee joint is connected with the high-pressure connecting pipe through a threaded coupling, and the joint of the tee joint and the high-pressure connecting pipe is hermetically connected through a sealing ring or raw tape.

[0008] Preferably, one end of the high-pressure pressure reducing valve is connected to the nitrogen cylinder, and the other end of the high-pressure pressure reducing valve is connected to the high-pressure connecting pipe through a threaded coupling, and the joint of the high-pressure pressure reducing valve and the high-pressure connecting pipe is hermetically connected through a sealing ring or raw tape.

[0009] Preferably, both the one-way valve and the low-pressure pressure reducing valve are connected to the high-pressure connecting pipe through threaded couplings, and the joints of the one-way valve and the low-pressure pressure reducing valve with the high-pressure connecting pipe are hermetically connected through a sealing ring or raw tape.

[0010] Preferably, one end of the stop valve is connected to the high-pressure connecting pipe by a threaded coupling, and the other end of the stop valve is connected to the inner liner of the type-IV hydrogen storage cylinder. The connection between the stop valve and the high-pressure connecting pipe is sealed by an O-ring or PTFE tape.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. The high-pressure charging pipeline of the present utility model is provided with a high-pressure pressure reducing valve, a check valve, a low-pressure pressure reducing valve, a pressure relief valve, a pressure gauge and a stop valve. When in use, when it is necessary to charge the inner liner of the type-IV hydrogen storage cylinder, the pressure relief valve is closed, the stop valve and the high-pressure pressure reducing valve are opened. The check valve prevents the gas in the pipeline from flowing back to the nitrogen cylinder. The pipeline pressure is adjusted to the maximum pressure value required by the inner liner of the type-IV hydrogen storage cylinder through the high-pressure pressure reducing valve, and then the low-pressure pressure reducing valve is adjusted to adjust the pipeline pressure. Observe the pressure gauge to monitor the pressure value of the pipeline, and further adjust the actual pressure required by the inner liner of the type-IV hydrogen storage cylinder. When the charging stops, the high-pressure pressure reducing valve and the stop valve are closed, and the pressure relief valve is opened. After the pressure gauge shows no pressure, the stop valve and the inner liner of the type-IV hydrogen storage cylinder can be disassembled. It can realize the functions of internal pressure monitoring, adjustment and pressure relief during the winding of the inner liner of the type-IV hydrogen storage cylinder, avoid the problems of excessive pressure bursting or insufficient support due to too low pressure during the winding and charging of the inner liner of the type-IV hydrogen storage cylinder, and ensure the normal use and safety of the winding of the inner liner of the type-IV hydrogen storage cylinder;

[0013] 2. The high-pressure charging pipeline of the present utility model connects the high-pressure pressure reducing valve, the check valve, the low-pressure pressure reducing valve, the pressure relief valve, the pressure gauge, the stop valve and the high-pressure connecting pipe by threaded couplings, which is convenient for disassembly and assembly and facilitates later maintenance and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0015] Figure 2 is a three-dimensional structural schematic diagram of the present utility model;

[0016] Figure 3 is a front view structural schematic diagram of the present utility model.

[0017] In the figure: 1. Nitrogen cylinder; 2. High-pressure connecting pipe; 3. High-pressure pressure reducing valve; 4. Check valve; 5. Low-pressure pressure reducing valve; 6. Pressure relief valve; 7. Pressure gauge; 8. Stop valve; 9. Three-way joint; 10. Threaded coupling. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] Please refer to Figures 1 - 3 , the high-pressure charging pipeline structure wound around the inner liner of the type-IV hydrogen storage bottle provided by the present invention includes a nitrogen cylinder 1. The output end of the nitrogen cylinder 1 is sequentially connected with a high-pressure pressure reducing valve 3, a one-way valve 4, a low-pressure pressure reducing valve 5, a pressure relief valve 6, a pressure gauge 7, and a stop valve 8 through a high-pressure connecting pipe 2. The stop valve 8 is connected to the inner liner of the type-IV hydrogen storage bottle;

[0020] Both the pressure relief valve 6 and the pressure gauge 7 are connected and communicated with the high-pressure connecting pipe 2 through a tee 9. The joints of the pressure relief valve 6 and the pressure gauge 7 with the tee 9 are hermetically connected by a sealing ring or raw tape;

[0021] The tee 9 is connected to the high-pressure connecting pipe 2 through a threaded coupling 10. The joint of the tee 9 and the high-pressure connecting pipe 2 is hermetically connected by a sealing ring or raw tape;

[0022] One end of the high-pressure pressure reducing valve 3 is connected to the nitrogen cylinder 1, and the other end of the high-pressure pressure reducing valve 3 is connected to the high-pressure connecting pipe 2 through a threaded coupling 10. The joint of the high-pressure pressure reducing valve 3 and the high-pressure connecting pipe 2 is hermetically connected by a sealing ring or raw tape;

[0023] Both the one-way valve 4 and the low-pressure pressure reducing valve 5 are connected to the high-pressure connecting pipe 2 through a threaded coupling 10, and the joints of the one-way valve 4 and the low-pressure pressure reducing valve 5 with the high-pressure connecting pipe 2 are hermetically connected by a sealing ring or raw tape;

[0024] One end of the stop valve 8 is connected to the high-pressure connecting pipe 2 through a threaded coupling 10, and the other end of the stop valve 8 is connected to the inner liner of the type-IV hydrogen storage bottle. The joint of the stop valve 8 and the high-pressure connecting pipe 2 is hermetically connected by a sealing ring or raw tape.

[0025] The high-pressure charging pipeline of the present utility model is provided with a high-pressure reducing valve 3, a check valve 4, a low-pressure reducing valve 5, a pressure relief valve 6, a pressure gauge 7 and a stop valve 8. When in use, when it is necessary to inflate the inner liner of the type-IV hydrogen storage bottle, the pressure relief valve 6 is closed, the stop valve 8 and the high-pressure reducing valve 3 are opened. The check valve 4 prevents the gas in the pipeline from flowing back to the nitrogen cylinder 1. The pipeline pressure is adjusted to the maximum pressure value required by the inner liner of the type-IV hydrogen storage bottle through the high-pressure reducing valve 3. Then the low-pressure reducing valve 5 is adjusted to adjust the pipeline pressure. Observe the pressure gauge 7 to monitor the pressure value of the pipeline and further adjust the actual pressure required by the inner liner of the type-IV hydrogen storage bottle. When the inflation stops, the high-pressure reducing valve 3 and the stop valve 8 are closed, the pressure relief valve 6 is opened. After the pressure gauge 7 shows no pressure, the stop valve 8 and the inner liner of the type-IV hydrogen storage bottle can be disassembled. It can realize the functions of internal pressure monitoring, adjustment and pressure relief during the winding of the inner liner of the type-IV hydrogen storage bottle, avoid the problems of excessive pressure bursting or insufficient support due to too low pressure during the winding and inflation of the inner liner of the type-IV hydrogen storage bottle, and ensure the normal use and safety of the winding of the inner liner of the type-IV hydrogen storage bottle;

[0026] The high-pressure charging pipeline of the present utility model connects the high-pressure reducing valve 3, the check valve 4, the low-pressure reducing valve 5, the pressure relief valve 6, the pressure gauge 7, the stop valve 8 and the high-pressure connecting pipe 2 through a threaded joint 10, which is convenient for disassembly and assembly and is convenient for later maintenance and use.

[0027] In summary, the usage method of the high-pressure charging pipeline structure for winding the inner liner of the type-IV hydrogen storage bottle provided in this embodiment: when it is necessary to inflate the inner liner of the type-IV hydrogen storage bottle, the pressure relief valve 6 is closed, the stop valve 8 and the high-pressure reducing valve 3 are opened. The check valve 4 prevents the gas in the pipeline from flowing back to the nitrogen cylinder 1. The pipeline pressure is adjusted to the maximum pressure value required by the inner liner of the type-IV hydrogen storage bottle through the high-pressure reducing valve 3. Then the low-pressure reducing valve 5 is adjusted to adjust the pipeline pressure. Observe the pressure gauge 7 to monitor the pressure value of the pipeline and further adjust the actual pressure required by the inner liner of the type-IV hydrogen storage bottle. When the inflation stops, the high-pressure reducing valve 3 and the stop valve 8 are closed, the pressure relief valve 6 is opened. After the pressure gauge 7 shows no pressure, the stop valve 8 and the inner liner of the type-IV hydrogen storage bottle can be disassembled. It can realize the functions of internal pressure monitoring, adjustment and pressure relief during the winding of the inner liner of the type-IV hydrogen storage bottle.

[0028] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A high-pressure charging pipeline structure for winding the inner liner of a type-IV hydrogen storage cylinder, characterized in that It includes a nitrogen cylinder (1), and the output end of the nitrogen cylinder (1) is successively connected with a high-pressure pressure reducing valve (3), a check valve (4), a low-pressure pressure reducing valve (5), a pressure relief valve (6), a pressure gauge (7) and a stop valve (8) through a high-pressure connecting pipe (2), and the stop valve (8) is connected to the inner liner of a type-IV hydrogen storage cylinder.

2. The high-pressure charging pipeline structure wound on the inner liner of a type-IV hydrogen storage bottle according to claim 1, characterized in that: Both the pressure relief valve (6) and the pressure gauge (7) are connected and communicated with the high-pressure connecting pipe (2) through a tee (9), and the joints of the pressure relief valve (6) and the pressure gauge (7) with the tee (9) are hermetically connected through a sealing ring or raw tape.

3. The high-pressure charging pipeline structure wound on the inner liner of a type-IV hydrogen storage cylinder according to claim 2, characterized in that: The tee (9) is connected with the high-pressure connecting pipe (2) through a threaded nipple (10), and the joint of the tee (9) and the high-pressure connecting pipe (2) is hermetically connected through a sealing ring or raw tape.

4. A high-pressure charging pipeline structure for winding the inner liner of a type-IV hydrogen storage cylinder according to claim 1, characterized in that: One end of the high-pressure pressure reducing valve (3) is connected to the nitrogen cylinder (1), and the other end of the high-pressure pressure reducing valve (3) is connected to the high-pressure connecting pipe (2) through a threaded nipple (10), and the joint of the high-pressure pressure reducing valve (3) and the high-pressure connecting pipe (2) is hermetically connected through a sealing ring or raw tape.

5. The high-pressure charging pipeline structure wound on the inner liner of a type-IV hydrogen storage cylinder according to claim 1, wherein: Both the check valve (4) and the low-pressure pressure reducing valve (5) are connected to the high-pressure connecting pipe (2) through a threaded nipple (10), and the joints of the check valve (4) and the low-pressure pressure reducing valve (5) with the high-pressure connecting pipe (2) are hermetically connected through a sealing ring or raw tape.

6. The high-pressure charging pipeline structure wound around the inner liner of a type-IV hydrogen storage cylinder according to claim 1, characterized in that: One end of the stop valve (8) is connected to the high-pressure connecting pipe (2) through a threaded nipple (10), the other end of the stop valve (8) is connected to the inner liner of the type-IV hydrogen storage cylinder, and the joint of the stop valve (8) and the high-pressure connecting pipe (2) is hermetically connected through a sealing ring or raw tape.

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