Metering device for filling high-pressure hydrogen
By designing a metering device for high-pressure hydrogen filling, including a mobile structure, a sealed box, a regulating structure and a pumping structure, the problem of the inaccurate measurement of air pressure and flow rate during hydrogen filling in the prior art is solved, the stability and safety of the filling process are achieved, and the risk of hydrogen leakage is reduced.
Patent Information
- Application Number
- CN202421717517.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-19
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-07-19
AI Technical Summary
The lack of metering devices in the existing high-pressure hydrogen filling technology leads to the inability to accurately measure the air pressure and flow rate, which poses a great safety risk. The hydrogen may leak and mix with the air to form an explosive mixture.
A metering device for high-pressure hydrogen filling is designed, including a moving structure, a sealing box, a regulating structure and a pumping structure. The air pressure and flow rate are measured by a meter, and the motor drives the shaft and partition to adjust the air pressure and flow rate to ensure the stability and safety of the filling process. At the same time, airbag expansion automatically reminds you to deal with hydrogen leakage to reduce the risk of leakage.
The precise adjustment of air pressure and flow rate during high-pressure hydrogen filling process is achieved, which improves the stability and safety of filling, reduces the need for artificial intervention, and reduces the risk of hydrogen leakage.
Smart Images
Figure CN222950819U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of high-pressure hydrogen filling, in particular to a metering device for high-pressure hydrogen filling. Background Art
[0002] High-pressure hydrogen storage is a method of hydrogen storage. Hydrogen can be transported in gas cylinders under high pressure and can be released directly through the adjustment of a pressure reducing valve. It is convenient and reliable and is the most common and direct method of hydrogen storage. With the development of material science, high-pressure gas cylinders made of carbon fiber and aluminum composite materials have been developed, which greatly reduces the mass of the gas cylinders themselves and improves capacity loading efficiency, making high-pressure hydrogen storage a more competitive on-board hydrogen storage method.
[0003] In the prior art, the hydrogen cylinder is inflated directly through the air inlet pipe. Without the help of a meter, the air pressure and flow rate cannot be accurately measured. There is a greater safety risk in hydrogen filling. Too high or too low air pressure and flow rate may cause safety accidents. Hydrogen may leak into the external environment during the filling process. Hydrogen is a highly flammable and explosive gas. Once leaked into the external environment, it may mix with oxygen in the air to form an explosive mixture. Once it encounters sparks or high temperatures, it may cause fire or explosion accidents, seriously threatening the safety of personnel and facilities. Utility Model Content
[0004] The purpose of the utility model is to provide a metering device for high-pressure hydrogen filling to solve the problems raised in the above background technology.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] A metering device for high-pressure hydrogen filling comprises a mobile structure, the mobile structure comprises a base plate and a roller, the roller is mounted on the bottom end of the base plate, a protective pad is fixedly mounted on the top of the base plate, a protective frame is fixedly mounted around the top of the base plate, a push handle is fixedly mounted on the top of the protective frame, a fixed structure is arranged on the protective frame, a hydrogen bottle is arranged on the top of the base plate, a connecting pipe and a control valve are installed on the top of the hydrogen bottle, a mounting structure and an air intake pipe are arranged at the same height as the connecting pipe, the mounting structure comprises a sealing box, an adjusting structure is arranged on the sealing box, and an exhaust structure is arranged on the sealing box.
[0007] As a further solution of the utility model: the fixing structure comprises a cross bar, a screw rod and a clamping plate, the cross bar is fixedly mounted on the protective frame, the screw rod is threadedly mounted on the cross bar, and one end of the screw rod is rotatably mounted on the clamping plate.
[0008] As a further solution of the utility model: the air intake pipe extends into the sealed box and is fixedly connected to the sealed box, a connecting head is arranged at one end of the air intake pipe, a box cover is arranged at the top of the sealed box, a handle is fixedly installed on the top of the box cover, a rubber pad is installed at the bottom of the box cover, a through hole is arranged at one end of the sealed box away from the air intake pipe, a circle of sealing rings is installed on the through hole, the connecting pipe passes through the through hole and extends into the interior of the sealed box, and the connecting pipe is connected to the connecting head.
[0009] As a further solution of the utility model: the regulating structure includes a conduit and a meter, the meter is installed on the outer surface of the sealing box, the meter is connected to the air intake pipe through the conduit, a rotating seat is fixedly installed on the air intake pipe, a rotating shaft is rotatably installed between the rotating seats, a partition is fixedly installed on the rotating shaft, the partition is inside the air intake pipe, a motor is installed on the rotating seat, and the motor shaft of the motor is fixedly connected to the top end of the rotating shaft.
[0010] As a further solution of the utility model: the air extraction structure includes an air pump, a first connecting pipe, a second connecting pipe and an air bag, the air pump is installed on one side of the sealed box, the air inlet end of the air pump is connected to the interior of the sealed box through the first connecting pipe, the air outlet end of the air pump is connected to the second connecting pipe, the air bag is installed on the box cover, and the air bag is connected to the interior of the sealed box.
[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0012] 1. The air pressure and flow rate in the air inlet pipe are measured by a meter, and the motor drives the shaft to rotate, and the shaft drives the partition to rotate, so as to adjust the air pressure and flow rate in the air inlet pipe, ensure the stability and safety of the filling process, reduce the need for human intervention, and improve the convenience and reliability of operation;
[0013] 2. When hydrogen leaks from the connector into the sealed box, the airbag will expand. The staff will extract the hydrogen in the sealed box based on the expansion of the airbag. The expansion of the airbag is a physical change that is intuitive and easy to see. It can automatically remind the staff to handle it, effectively reducing the risk of gas leakage and ensuring the safety of the operating environment. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a three-dimensional schematic diagram of the utility model.
[0015] Figure 2 It is a schematic diagram of the air extraction structure of the utility model.
[0016] Figure 3 This is a schematic diagram of the connection between the connecting pipe and the air intake pipe of the utility model.
[0017] Figure 4 It is a schematic diagram of a box cover of the present utility model.
[0018] Figure 5 This is a schematic diagram of the connection of the meter of the utility model.
[0019] Figure 6 It is a schematic diagram of the adjustment structure of the utility model.
[0020] Notes on the accompanying drawings: 1. Moving structure; 11. Bottom plate; 12. Roller; 13. Protective pad; 14. Protective frame; 15. Push handle; 2. Fixed structure; 21. Cross bar; 22. Screw; 23. Clamping plate; 3. Hydrogen cylinder; 31. Connecting pipe; 32. Control valve; 4. Mounting structure; 41. Sealed box; 42. Box cover; 43. Rubber pad; 44. Connector; 5. Inlet pipe; 6. Adjusting structure; 61. Conduit; 62. Meter; 63. Rotating shaft; 64. Partition; 65. Rotating seat; 66. Motor; 7. Exhaust structure; 71. Air pump; 72. First connecting pipe; 73. Second connecting pipe; 74. Airbag. DETAILED DESCRIPTION
[0021] The following embodiments will be combined with the accompanying drawings to describe the utility model in detail. In the drawings or descriptions, similar or identical parts use the same reference numerals, and in actual applications, the shape, thickness or height of each component can be enlarged or reduced. The various embodiments listed in the utility model are only used to illustrate the utility model, and are not used to limit the scope of the utility model. Any obvious modifications or changes made to the utility model do not depart from the spirit and scope of the utility model.
[0022] Example
[0023] See also Figure 1 to Figure 6In the embodiment of the utility model, a metering device for high-pressure hydrogen filling includes a mobile structure 1, the mobile structure 1 includes a bottom plate 11 and a roller 12, the roller 12 is installed at the bottom end of the bottom plate 11, the top of the bottom plate 11 is fixedly installed with a protective pad 13, the top of the bottom plate 11 is fixedly installed with a protective frame 14 around the top, the top of the protective frame 14 is fixedly installed with a push handle 15, a fixed structure 2 is arranged on the protective frame 14, the fixed structure 2 includes a cross bar 21, a screw 22 and a clamping plate 23, the cross bar 2 1 is fixedly installed on the protective frame 14, the screw rod 22 is threadedly installed on the cross bar 21, one end of the screw rod 22 is rotatably installed with the clamping plate 23, the top of the bottom plate 11 is provided with a hydrogen bottle 3, the top of the hydrogen bottle 3 is provided with a connecting pipe 31 and a control valve 32, the hydrogen bottle 3 is placed on the top of the protective pad 13, the screw rod 22 is rotated, the screw rod 22 is rotated to move the screw rod 22 in the cross bar 21, the cross bar 21 is moved to drive the clamping plate 23 to move, the hydrogen bottle 3 is fixed by the clamping plate 23, so that the hydrogen bottle 3 Keep it stable, push the push handle 15 to control the movement of the bottom plate 11, and transport the hydrogen cylinder 3 by moving the bottom plate 11 to improve the transportation efficiency. The mounting structure 4 and the air intake pipe 5 are arranged at the same height as the connecting pipe 31. The mounting structure 4 includes a sealing box 41. The air intake pipe 5 extends into the sealing box 41 and the air intake pipe 5 is fixedly connected to the sealing box 41. A connector 44 is arranged at one end of the air intake pipe 5. A box cover 42 is arranged at the top of the sealing box 41. A handle is fixedly installed at the top of the box cover 42. A handle is fixedly installed at the bottom of the box cover 42. A rubber pad 43 is installed. A through hole is set at one end of the sealing box 41 away from the air intake pipe 5. A sealing ring is installed on the through hole. The connecting pipe 31 is inserted into the sealing box 41 through the through hole. The connecting pipe 31 is connected to the connecting head 44. The air intake pipe 5 and the connecting pipe 31 are connected through the connecting head 44. The box cover 42 is covered on the top of the sealing box 41, and the box cover 42 is sealed by the rubber pad 43. Inflate the air intake pipe 5, and the gas enters the connecting pipe 31 through the connecting head 44, and then enters the hydrogen cylinder 3.
[0024] See also Figure 1 to Figure 6The sealing box 41 is provided with an adjustment structure 6, which includes a conduit 61 and a meter 62. The meter 62 is installed on the outer surface of the sealing box 41, and the meter 62 is connected to the intake pipe 5 through the conduit 61. A rotating seat 65 is fixedly installed on the intake pipe 5, and a rotating shaft 63 is rotatably installed between the rotating seats 65. A partition 64 is fixedly installed on the rotating shaft 63, and the partition 64 is inside the intake pipe 5. A motor 66 is installed on the rotating seat 65, and the motor shaft of the motor 66 is fixedly connected to the top of the rotating shaft 63. The sealing box 41 is provided with an exhaust structure 7, which includes an air pump 71, a first connecting pipe 72, a second connecting pipe 73 and an air bag 74. The air pump 71 is installed on one side of the sealing box 41, and the air intake end of the air pump 71 is communicated with the inside of the sealing box 41 through the first connecting pipe 72. The air outlet end of the air pump 71 is connected to a second connecting pipe 73, and the airbag 74 is installed on the box cover 42, and the airbag 74 is interconnected with the inside of the sealed box 41. The gas flow in the intake pipe 5, including the air pressure, flow rate, etc., is monitored by the meter 62. When the flow rate or air pressure needs to be adjusted, the motor 66 is started, and the motor shaft of the motor 66 drives the rotating shaft 63 to rotate, and the rotating shaft 63 drives the partition 64 to rotate, and the flow rate and air pressure in the intake pipe 5 are controlled by the partition 64. When the gas in the intake pipe 5 leaks into the sealed box 41, the gas will enter the airbag 74 to expand the airbag 74. When the staff sees that the airbag 74 is expanded, the second connecting pipe 73 is connected to the tank for collecting hydrogen, and the air pump 71 is started. The hydrogen leaked from the sealed box 41 is extracted by the air pump 71 to prevent the hydrogen from leaking into the external environment and ensure safety.
[0025] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.
[0026] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. A metering device for high-pressure hydrogen filling, comprising a mobile structure (1), the mobile structure (1) comprising a bottom plate (11) and a roller (12), the roller (12) being mounted at the bottom end of the bottom plate (11), a protective pad (13) being fixedly mounted at the top end of the bottom plate (11), a protective frame (14) being fixedly mounted around the top end of the bottom plate (11), a push handle (15) being fixedly mounted at the top end of the protective frame (14), characterized in that: A fixing structure (2) is arranged on the protective frame (14), a hydrogen bottle (3) is arranged on the top of the bottom plate (11), a connecting pipe (31) and a control valve (32) are installed on the top of the hydrogen bottle (3), a mounting structure (4) and an air intake pipe (5) are arranged at the same height as the connecting pipe (31), the mounting structure (4) comprises a sealing box (41), an adjusting structure (6) is arranged on the sealing box (41), and an exhaust structure (7) is arranged on the sealing box (41).
2. The metering device for high-pressure hydrogen filling according to claim 1, characterized in that: The fixing structure (2) comprises a cross bar (21), a screw rod (22) and a clamping plate (23); the cross bar (21) is fixedly mounted on the protective frame (14); the screw rod (22) is threadedly mounted on the cross bar (21); and one end of the screw rod (22) is rotatably mounted on the clamping plate (23).
3. The metering device for high-pressure hydrogen filling according to claim 1, characterized in that: The air intake pipe (5) extends into the sealing box (41) and the air intake pipe (5) is fixedly connected to the sealing box (41); a connector (44) is arranged at one end of the air intake pipe (5); a box cover (42) is arranged at the top end of the sealing box (41); a handle is fixedly installed at the top end of the box cover (42); a rubber pad (43) is installed at the bottom end of the box cover (42); a through hole is arranged at one end of the sealing box (41) away from the air intake pipe (5); a circle of sealing rings is installed on the through hole; the connecting pipe (31) passes through the through hole and extends into the interior of the sealing box (41); and the connecting pipe (31) is connected to the connector (44).
4. The metering device for high-pressure hydrogen filling according to claim 1, characterized in that: The regulating structure (6) comprises a conduit (61) and a meter (62), wherein the meter (62) is mounted on the outer surface of the sealing box (41), and the meter (62) is connected to the air intake pipe (5) via the conduit (61). A rotating seat (65) is fixedly mounted on the air intake pipe (5), a rotating shaft (63) is rotatably mounted between the rotating seats (65), a partition (64) is fixedly mounted on the rotating shaft (63), and the partition (64) is inside the air intake pipe (5). A motor (66) is mounted on the rotating seat (65), and a motor shaft of the motor (66) is fixedly connected to the top of the rotating shaft (63).
5. The metering device for high-pressure hydrogen filling according to claim 1, characterized in that: The air extraction structure (7) comprises an air pump (71), a first connecting pipe (72), a second connecting pipe (73) and an air bag (74); the air pump (71) is installed on one side of the sealed box (41); the air inlet end of the air pump (71) is connected to the inside of the sealed box (41) through the first connecting pipe (72); the air outlet end of the air pump (71) is connected to the second connecting pipe (73); the air bag (74) is installed on the box cover (42), and the air bag (74) is connected to the inside of the sealed box (41).