CN217382543U

CN217382543U - Filling pipeline structure of hydrogenation machine

Info

Publication number: CN217382543U
Application number: CN202220956114.3U
Authority: CN
Inventors: 贾艳明; 王永庆; 王海龙; 周亮
Original assignee: Zhengxing Hydrogen Electric Technology Zhengzhou Co ltd
Current assignee: Zhengxing Hydrogen Electric Technology Zhengzhou Co ltd
Priority date: 2022-04-24
Filing date: 2022-04-24
Publication date: 2022-09-06
Anticipated expiration: 2032-04-24

Abstract

The utility model discloses a filling pipeline structure of a hydrogenation machine, aiming at solving the technical problems of complex structure, complex use and operation and high production and maintenance cost of the filling pipeline structure of the hydrogenation machine; the structure comprises a main hydrogen supply path, a first hydrogen supply branch and a second hydrogen supply branch, wherein the main hydrogen supply path comprises an input end communicated with a hydrogen source and an output end respectively communicated with the first hydrogen supply branch and the second hydrogen supply branch; the input end of the first hydrogen supply branch is provided with a pressure regulating valve so that hydrogen output by the output end of the main hydrogen supply path enters the first hydrogen supply branch after pressure regulation; the utility model discloses a pipeline structure of single measurement, binary channels, double gun, simple structure, integrated level are high, have reduced the holistic volume of hydrogenation machine, provide 35MPa, 70MPa hydrogen fuel filling service for the hydrogen storage bottle respectively, are provided with nitrogen gas and sweep pipeline, pressure overload protection pipeline and instrument wind pipeline, make hydrogen filling pipeline structure's function perfect more, stability is stronger.

Description

Filling pipeline structure of hydrogenation machine

Technical Field

The utility model relates to a hydrogenation equipment technical field, concretely relates to hydrogenation machine filling pipeline structure.

Background

Hydrogen energy is an important carrier for constructing a multi-element energy supply system mainly based on clean energy in the future, and the development and utilization of the hydrogen energy become an important direction of a new round of world energy technology revolution. China is a large energy consumption country and also an energy shortage country. Compared with other energy sources, the hydrogen energy can be regenerated, zero emission is realized, and the power density is 3 times that of gasoline and diesel oil. The development of hydrogen energy is beneficial to ensuring the energy safety and promoting the energy industry to upgrade. The hydrogen energy has great strategic significance for accelerating the promotion of energy production and consumption revolution of China and accelerating the energy transformation development of new era.

The hydrogenation machine is one of the important components of the hydrogenation station and has the functions of filling a hydrogen fuel cell automobile, a vehicle-mounted hydrogen storage system and the like. At present, the operated hydrogenation station mainly comprises a 35MPa hydrogenation machine, the 35MPa hydrogenation machine technology is mature in practical application, and the market application and layout of the 70MPa hydrogenation machine are gradually popularized. In view of the advantages of high compression ratio, high filling speed and the like of the 70MPa hydrogenation machine, the comprehensive advantages of the 35MPa and 70MPa hydrogenation all-in-one machine are gradually highlighted; the pipeline of the existing 35MPa and 70MPa hydrogenation machine is designed into a double-metering, double-channel and double-gun pipeline process structure, so that the pipeline is complex, valves are numerous, the operation is complicated, the production cost and the later maintenance cost of equipment are increased, and the occupied area of the hydrogenation machine is also increased.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is known to a person skilled in the art.

Disclosure of Invention

An object of the utility model is to provide a hydrogenation machine filling pipeline structure aims at solving hydrogenation machine filling pipeline structure complicacy, uses complex operation, the high technical problem of production maintenance cost.

In order to solve the technical problem, the utility model adopts the following technical scheme:

designing a filling pipeline structure of a hydrogenation machine, which comprises a main hydrogen supply path, a first hydrogen supply branch path and a second hydrogen supply branch path, wherein the main hydrogen supply path comprises an input end communicated with a hydrogen source and an output end respectively communicated with the first hydrogen supply branch path and the second hydrogen supply branch path; the input end of the first hydrogen supply branch is provided with a pressure regulating valve, so that hydrogen output by the output end of the main hydrogen supply path enters the first hydrogen supply branch after pressure regulation.

Preferably, a needle valve, a filter, a pressure transmitter, a mass flowmeter, a check valve and a flow regulating valve are sequentially arranged in the hydrogen supply main path along the hydrogen conveying direction.

Preferably, the filling pipeline structure of the hydrogenation machine further comprises a nitrogen purging branch communicated with the hydrogen supply main pipeline and arranged between the needle valve and the filter, and a high-pressure electromagnetic valve and a one-way valve are sequentially arranged in the nitrogen purging branch along the nitrogen conveying direction.

Preferably, two ends of a high-pressure electromagnetic valve in the nitrogen purging branch are connected in parallel with a bypass branch, and a corresponding needle valve is arranged in the bypass branch.

Preferably, all be equipped with corresponding high-pressure solenoid valve, manometer, pressure transmitter, temperature transmitter, abruption valve, hydrogenation hose and hydrogenation rifle in proper order along hydrogen direction of delivery in first hydrogen supply branch road and the second hydrogen supply branch road.

Preferably, the first hydrogen supply branch and the second hydrogen supply branch are respectively provided with a corresponding diffusion pipeline and an overload protection pipeline.

Preferably, the hydrogenation machine filling pipeline structure further comprises an instrument air pipeline, one end of the instrument air pipeline is communicated with the instrument air inlet, and the other end of the instrument air pipeline is communicated with the flow regulating valve and the hydrogenation gun respectively.

Preferably, a pneumatic triple piece is arranged in the instrument air pipeline.

Preferably, the instrument air pipeline is a polyurethane tube.

Compared with the prior art, the utility model discloses a main beneficial technological effect lies in:

1. the utility model discloses a pipeline structure of single measurement, binary channels, double gun, simple structure, integrated level are high, have reduced the holistic volume of hydrogenation machine, provide 35MPa, 70MPa hydrogen fuel filling service for hydrogen storage bottle, and pipe-line system can further adopt the break-make of each branch road of high-pressure solenoid valve control, avoids the filling accident that the sequence error of manual operation valve caused, has improved the efficiency and the security of hydrogenation.

2. The utility model discloses further be provided with nitrogen gas and sweep pipeline, pressure overload protection pipeline and instrument wind pipeline, make hydrogen filling pipeline structure's function perfect more, stability is stronger.

Drawings

Fig. 1 is a schematic diagram of the filling pipeline of the present invention.

Fig. 2 is the schematic diagram of the structure of the filling pipeline of the present invention.

In each of the above figures, 1, a hydrogen donor main route; 11. a first needle valve; 12. a filter; 13. a third pressure transmitter; 14. a mass flow meter; 15. a first check valve; 16. a flow regulating valve; 2. a 35MPa hydrogen supply pipeline; 21. a first high-pressure solenoid valve; 22. a pressure regulating valve; 23. a first pressure gauge; 24. a first pressure transmitter; 25. a first temperature transmitter; 26. TK16 hydrogenation gun; 27. a first safety valve; 28. a fourth high-pressure solenoid valve; 29. a fourth check valve; 3. a 70MPa hydrogen supply pipeline; 31. a second high-pressure solenoid valve; 32. a second pressure gauge; 33. a second pressure transmitter; 34. a second temperature transmitter; 35. TK17 hydrogenation gun; 36. a second relief valve; 37. a third high voltage solenoid valve; 38. a third check valve; 4. a nitrogen purging branch; 41. a fifth high-pressure solenoid valve; 42. a second one-way valve; 5. an instrument air duct; 51. a pneumatic triplet; 6. breaking the valve; 7. a hydrogenation hose; 8. a hydrogenation station blow-off header.

Detailed Description

The following embodiments are only intended to illustrate the present invention in detail, and do not limit the scope of the present invention in any way.

In the description of the present invention, it is to be understood that the directions or positional relationships indicated as referring to the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., are based on the directions or positional relationships shown in the drawings, and are only for convenience of describing technical solutions and simplifying the description, but do not indicate or imply that the referred device or element must have a specific direction, be constructed in a specific direction and operation, and thus, should not be construed as limiting the present invention. Reference herein to "first," "second," etc., is used to distinguish between similar items and not to limit the particular order or sequence.

The unit modules, the pipe valves, the sensors and other devices referred to in the following embodiments are all conventional commercial products unless otherwise specified. The procedures relied upon are either conventional or simple procedures.

Example 1: a filling pipeline structure of a hydrogenation machine is shown in figures 1 to 2 and comprises a main hydrogen supply path 1, a first hydrogen supply branch path and a second hydrogen supply branch path.

The hydrogen supply main circuit 1 comprises an input end communicated with a hydrogen inlet and an output end respectively communicated with a first hydrogen supply branch and a second hydrogen supply branch; the hydrogen source is at 90MPa pressure, and a first needle valve 11, a filter 12, a third pressure transmitter 13, a mass flow meter 14, a first one-way valve 15 and a flow regulating valve 16 are sequentially arranged in the main hydrogen supply path 1 along the hydrogen conveying direction; the first needle valve 11 is installed on the hydrogen supply main path 1 at the hydrogen inlet end and used for manually stopping or starting the on-off of hydrogen conveying of the whole hydrogen supply system; the filter 12 is also arranged close to the hydrogen inlet end, and a filter element in the filter 12 blocks particle impurities and dirt doped in the hydrogen, discharges clean hydrogen and provides clean hydrogen for the hydrogenation machine so as to protect the normal work and operation of a pipeline system valve; the third pressure transmitter 13 is used for detecting the pressure change in the pipeline of the main hydrogen supply path 1, so that the electric control system can judge whether the pressure is normal or not to control the opening and closing of the corresponding high-pressure electromagnetic valve; the mass flowmeter 14 can realize real-time acquisition, processing and operation of parameter information such as flow, temperature, density and the like of hydrogen, so that the mass of hydrogen flowing through the mass flowmeter is obtained; the check valve is used for limiting hydrogen to flow along the pipeline design process direction, preventing the reverse flow of gas and playing a check role.

The first hydrogen supply branch is a 35MPa hydrogen supply pipeline 2, and a first high-pressure electromagnetic valve 21, a pressure regulating valve 22, a first pressure gauge 23, a first pressure transmitter 24, a first temperature transmitter 25, a breaking valve 6, a hydrogenation hose 7 and a TK16 hydrogenation gun 26 are sequentially arranged in the 35MPa hydrogen supply pipeline 2 along the hydrogen conveying direction; the first high-pressure electromagnetic valve 21 is used for controlling the on-off of a 35MPa hydrogenation pipeline; the pressure regulating valve 22 can realize the functions of pressure regulation and pressure fixation aiming at the pressure of the injected medium between 0 and 100MPa, is used for regulating the pressure of high-pressure hydrogen (90 MPa) in the main hydrogen supply path 1 to 45MPa, and is used for providing 35MPa injection service for the TK16 hydrogenation gun 26 on the first hydrogen supply branch; the first pressure gauge 23 is a high-precision oil-forbidden pressure gauge, has the precision grade of +/-0.1%, and displays the pressure of the hydrogen in the 35MPa hydrogen supply pipeline 2 in real time; the two first pressure transmitters 24 are arranged on the 35MPa hydrogen supply pipeline 2 in the front and back directions, the two first pressure transmitters 24 mutually correct detection values and are mutually standby, when one is damaged, the other can immediately replace the other, and the two first pressure transmitters are used for detecting the pressure change in the 35MPa hydrogen supply pipeline 2 so that the electric control system can judge whether the pressure is normal or not to control the on and off of the corresponding high-pressure electromagnetic valve; the first temperature transmitter 25 is used for detecting the temperature change in the 35MPa hydrogen supply pipeline 2 so as to facilitate the electric control system to judge whether the temperature is normal or not so as to control the opening and closing of the corresponding high-pressure electromagnetic valve; the snapping valve 6 is a safety protection device, the snapping valve 6 for the hydrogenation equipment is arranged on a safety connection device between the hydrogenation hose 7 and the hydrogenation equipment, a bidirectional check valve is arranged in the snapping valve, when the filling gun is pulled by a certain external force once, the snapping valve 6 can be automatically pulled off, and meanwhile, a pipeline is closed and cut off in a bidirectional mode, so that the phenomenon that the hydrogenation hose 7 arranged on the hydrogenation equipment is snapped or the hydrogenation equipment is pulled down is avoided, and the occurrence of dangerous accidents is avoided; the TK16 hydrogenation gun 26 is provided with a branch communicated with the hydrogenation station diffusion main pipe 8, after the TK16 hydrogenation gun 26 is filled, the TK16 hydrogenation gun 26 filling handle switch is rotated to a closed position, hydrogen between the TK16 hydrogenation gun 26 and a hydrogenation port is discharged into the hydrogenation station diffusion main pipe 8 through the branch, and the hydrogenation gun is convenient to pull out; a diffusion pipeline and a pressure overload protection pipeline are arranged in the 35MPa hydrogen supply pipeline 2; one end of the bleeding pipeline is communicated with and arranged on the 35MPa hydrogen supply pipeline 2 between the pressure regulating valve 22 and the first pressure gauge 23, the other end of the bleeding pipeline is communicated with the bleeding main pipe 8 of the hydrogenation station, the bleeding pipeline comprises a fourth high-pressure electromagnetic valve 28 and a fourth one-way valve 29, two ends of the fourth high-pressure electromagnetic valve 28 are connected in parallel with a bypass branch, a valve switch is arranged on the bypass branch, and when the fourth high-pressure electromagnetic valve 28 cannot be opened due to a fault, hydrogen in the 35MPa hydrogen supply pipeline 2 is bled by manually opening the valve switch on the bypass branch; one end of the pressure overload protection pipeline is communicated with the 35MPa hydrogen supply pipeline 2 arranged between the pressure regulating valve 22 and the first pressure gauge 23, the other end of the pressure overload protection pipeline is communicated with the hydrogen station diffusion main pipe 8, the pressure overload protection pipeline comprises a first safety valve 27, when the gas pressure in the 35MPa hydrogen supply pipeline 2 is larger than or equal to the setting pressure value of the first safety valve 27, the valve of the first safety valve 27 is automatically opened, and a high-pressure gas source in the 35MPa hydrogen supply pipeline 2 is discharged into the hydrogen station diffusion main pipe 8 through a fourth one-way valve 29 to start pressure relief; when the pressure of the gas source in the 35MPa hydrogen supply pipeline 2 is smaller than the setting pressure value of the first safety valve 27, the valve of the first safety valve 27 is automatically closed.

The second hydrogen supply branch is a 70MPa hydrogen supply pipeline 3, and a second high-pressure electromagnetic valve 31, a second pressure gauge 32, a second pressure transmitter 33, a second temperature transmitter 34, a breaking valve 6, a hydrogenation hose 7 and a TK17 hydrogenation gun 35 are sequentially arranged in the 70MPa hydrogen supply pipeline along the hydrogen conveying direction; the second high-pressure electromagnetic valve 31 is used for controlling the on-off of the 70MPa hydrogen supply pipeline 3; the second pressure gauge 32 is a high-precision oil-forbidden pressure gauge, has the measuring range of 0-100MPa and the precision grade of +/-0.1 percent, and displays the pressure of hydrogen in the 70MPa hydrogen supply pipeline 3 in real time; the two second pressure transmitters 33 are arranged on the 70MPa hydrogen supply pipeline 3 in a front-back mode, the two second pressure transmitters 33 mutually correct detection values and are mutually standby, when one is damaged, the other can immediately replace the other, and the two second pressure transmitters are used for detecting the pressure change in the 70MPa hydrogen supply pipeline 3 so that an electric control system can judge whether the pressure is normal or not to control the on-off of the corresponding high-pressure electromagnetic valve; the second temperature transmitter 34 is used for detecting the temperature change in the 70MPa hydrogen supply pipeline 3 so that the electric control system can judge whether the temperature is normal or not to control the opening and closing of the corresponding high-pressure electromagnetic valve; a diffusion pipeline and a pressure overload protection pipeline are also arranged in the 70MPa hydrogen supply pipeline 3; one end of the bleeding pipeline is communicated with the 70MPa hydrogen supply pipeline 3 arranged between the second high-pressure electromagnetic valve 31 and the second pressure gauge 32, the other end of the bleeding pipeline is communicated with the bleeding header pipe 8 of the hydrogenation station, the bleeding pipeline comprises a third high-pressure electromagnetic valve 37 and a third one-way valve 38, two ends of the third high-pressure electromagnetic valve 37 are connected in parallel with a bypass branch, a valve switch is arranged on the bypass branch, and when the third high-pressure electromagnetic valve 37 cannot be opened due to a fault, hydrogen in the 70MPa hydrogen supply pipeline 3 is bled by manually opening the valve switch on the bypass branch; one end of the pressure overload protection pipeline is communicated with the 70MPa hydrogen supply pipeline 3 arranged between the flow regulating valve 16 and the second high-pressure electromagnetic valve 31, the other end of the pressure overload protection pipeline is communicated with the hydrogen station diffusion main pipe 8, the pressure overload protection pipeline comprises a second safety valve 36, when the air source pressure in the 70MPa hydrogen supply pipeline 3 is larger than or equal to the setting pressure value of the second safety valve 36, the valve of the second safety valve 36 is automatically opened, and the high-pressure air source in the 70MPa hydrogen supply pipeline 3 is discharged into the hydrogen station diffusion main pipe 8 through a third one-way valve 38 to start pressure relief; when the gas source pressure in the 70MPa hydrogen supply pipeline 3 is smaller than the setting pressure value of the second safety valve 36, the valve of the second safety valve 36 is automatically closed; the pressure overload protection pipeline is provided with a manual diffusing branch of a main hydrogen supply pipeline 1 through a pipeline in a communicating mode, a valve switch is arranged on the manual diffusing branch of the main hydrogen supply pipeline 1, when the main hydrogen supply pipeline 1 needs to be overhauled and maintained under 70MPa or the equipment is stopped for a long time or has power failure, a first needle valve 11 is manually closed and a valve switch on the manual diffusing branch of the main hydrogen supply pipeline 1 is opened in sequence, hydrogen in the main hydrogen supply pipeline 1 flows through the valve switch and a third one-way valve 38 on the manual diffusing branch of the main hydrogen supply pipeline 1, and flows through a main hydrogen station diffusing pipe 8, so that the main hydrogen supply pipeline 1 is manually diffused.

A nitrogen purging branch 4 is communicated with the hydrogen supply main path 1 between the first needle valve 11 and the filter 12, a fifth high-pressure solenoid valve 41 and a second one-way valve 42 are sequentially arranged in the nitrogen purging branch 4 along the nitrogen purging direction, bypass branches are arranged at two ends of the fifth high-pressure solenoid valve 41 in parallel, a valve switch is arranged in each bypass branch, and when the fifth high-pressure solenoid valve 41 cannot be opened due to a fault. Nitrogen enters the pipeline system for purging by manually opening a valve switch on the corresponding bypass branch.

The device comprises an instrument air pipeline 5, wherein one end of the instrument air pipeline 5 is communicated with an instrument air source inlet, the other end of the instrument air pipeline 5 is respectively communicated with a flow regulating valve 16 and a TK17 hydrogenation gun 35, a pneumatic triple piece 51 is arranged in the instrument air pipeline 5, and the pneumatic triple piece 51 is arranged close to the instrument air source inlet end to provide clean instrument air (nitrogen) for the flow regulating valve 16 and the TK17 hydrogenation gun 35; the instrument air pipeline 5 is a polyurethane pipeline with the diameter of 8mm and the pressure of 500 PSi; and a valve switch is arranged on a pipeline communicated with the TK17 hydrogenation gun 35 through the instrument air pipeline 5, when hydrogen is continuously filled into a vehicle (usually, ten vehicles are continuously filled) and the gun mouth of the hydrogenation gun is frozen and frosted, the valve switch between the instrument air pipeline 5 and the TK17 hydrogenation gun 35 is manually opened, an instrument air nitrogen source enters between the TK17 hydrogenation gun 35 and the hydrogenation mouth, and nitrogen purging operation is carried out to achieve the effects of drying frozen ice crystals and water vapor. And after purging is finished, closing a valve switch, namely finishing the 'anti-freezing' nitrogen purging action of the hydrogenation gun.

Example 2: the difference from the embodiment 1 is that when the pressure of the hydrogen inlet of the main hydrogen supply path 1 is other pressure values (greater than 90MPa pressure), a first high-pressure electromagnetic valve 21, a pressure regulating valve 22, a first pressure gauge 23, a first pressure transmitter 24, a first temperature transmitter 25, a breaking valve 6, a hydrogenation hose 7 and a TK16 hydrogenation gun 26 are sequentially arranged in the 35MPa gas supply path along the hydrogen conveying direction; a second high-pressure electromagnetic valve 31, a pressure regulating valve 22, a second pressure gauge 32, a second pressure transmitter 33, a second temperature transmitter 34, a breaking valve 6, a hydrogenation hose 7 and a TK17 hydrogenation gun 35 are sequentially arranged in the 70MPa gas supply pipeline along the hydrogen conveying direction; the pressure regulating valve 22 is used for regulating the pressure values of hydrogen flowing into the 35MPa hydrogen supply pipeline and the 70MPa hydrogen supply pipeline in the main hydrogen supply pipeline 1 to 45MPa and 90MPa respectively.

The operation and use method of the hydrogen filling pipeline structure of the hydrogen filling station comprises the following steps: the 90MPa hydrogen source flows to the inlet end of the first needle valve 11 through the hydrogen inlet, the first needle valve 11 is opened, and the hydrogen flows to the inlet ends of the first high-pressure electromagnetic valve 21 and the second high-pressure electromagnetic valve 31 through the filter 12, the third pressure transmitter 13, the mass flow meter 14, the first check valve 15 and the flow regulating valve 16.

When 35MPa hydrogen needs to be filled, the first high-pressure electromagnetic valve 21 is electrified, valves of the first high-pressure electromagnetic valve are opened in sequence, a 90MPa hydrogen source flows through the first high-pressure electromagnetic valve 21, the pressure regulating valve 22, the first pressure gauge 23, the first pressure transmitter 24, the first temperature transmitter 25, the snapping valve 6 and the hydrogenation hose 7, finally flows to the inlet end of a 35MPa hydrogenation gun (TK 16), and the hydrogen filling operation is waited;

when 70MPa hydrogen needs to be filled, the second high-pressure electromagnetic valve 31 is electrified, the electromagnetic valve is opened, and a 90MPa hydrogen source flows through the second high-pressure electromagnetic valve 31, the pressure regulating valve 22, the second pressure gauge 32, the second pressure transmitter 33, the second temperature transmitter 34, the breaking valve 6 and the hydrogenation hose 7, finally flows to the inlet end of a 70MPa hydrogenation gun (TK 17), and waits for hydrogen filling operation.

Example 3: compared with the embodiments 1 and 2, the difference is that when the hydrogen inlet pressure of the main hydrogen supply path 1 is provided with the hydrogen sources with pressure values of 45MPa and 90MPa, the 35MPa hydrogen supply pipeline 2 is sequentially provided with a first high-pressure electromagnetic valve 21, a pressure regulating valve 22, a first pressure gauge 23, a first pressure transmitter 24, a first temperature transmitter 25, a breaking valve 6, a hydrogenation hose 7 and a TK16 hydrogenation gun 26 along the hydrogen conveying direction; a second high-pressure solenoid valve 31, a second pressure gauge 32, a second pressure transmitter 33, a second temperature transmitter 34, a breaking valve 6, a hydrogenation hose 7 and a TK17 hydrogenation gun 35 are sequentially arranged in the 70MPa hydrogen supply pipeline 3 along the hydrogen conveying direction; the 45MPa hydrogen source and the 90MPa hydrogen source are switched by a matching sequence control module of the hydrogenation machine and are conveyed to the corresponding 35MPa hydrogen supply pipeline and 70MPa hydrogen supply pipeline, and the filling service of the 35MPa hydrogen and the 70MPa hydrogen is respectively provided.

The operation and use method of the hydrogen filling pipeline structure of the hydrogen filling station comprises the following steps:

a hydrogen source of 45MPa or 90MPa flows to the inlet end of the first needle valve 11 through a hydrogen inlet, the first needle valve 11 is opened, and the hydrogen flows to the inlet ends of the first high-pressure electromagnetic valve 21 and the second high-pressure electromagnetic valve 31 through the filter 12, the third pressure transmitter 13, the mass flow meter 14, the first check valve 15 and the flow regulating valve 16.

When 35MPa hydrogen needs to be added, a matching sequence control module of the hydrogenation machine switches a hydrogen inlet air source of the hydrogenation machine to a 45MPa hydrogen source, the first high-pressure electromagnetic valve 21 is powered on, a valve of the first high-pressure electromagnetic valve is opened, and the 45MPa hydrogen source flows through the first high-pressure electromagnetic valve 21, the pressure regulating valve 22, the first pressure gauge 23, the first pressure transmitter 24, the first temperature transmitter 25, the breaking valve 6 and the hydrogenation hose 7 and finally flows to an inlet end of a 35MPa hydrogenation gun (TK 16) to wait for hydrogen adding operation.

When 70MPa hydrogen needs to be filled, a matching sequence control module of the hydrogenation machine switches a hydrogen inlet air source of the hydrogenation machine to a 90MPa hydrogen source, the second high-pressure electromagnetic valve 31 is powered on, the valve of the electromagnetic valve is opened, and the 90MPa hydrogen source flows through the second high-pressure electromagnetic valve 31, the second pressure gauge 32, the second pressure transmitter 33, the second temperature transmitter 34, the breaking valve 6 and the hydrogenation hose 7 and finally flows to the inlet end of a 70MPa hydrogenation gun (TK 17) to wait for hydrogen filling operation.

When the hydrogenation equipment is initially installed or before and after maintenance, pipeline nitrogen purging replacement is carried out on the whole pipeline of the hydrogenation equipment, so that nitrogen purging replacement is carried out on air in a hydrogen pipeline before initial installation and after maintenance and hydrogen in the pipeline before maintenance; and closing the first needle valve 11, opening the first high-pressure electromagnetic valve 21, the second high-pressure electromagnetic valve 31, the third high-pressure electromagnetic valve 37 and the fourth high-pressure electromagnetic valve 28, and performing nitrogen purging replacement on gas in the pipeline to discharge the gas into the hydrogen station diffusion header pipe 8.

The model specifications of the components such as the unit module, the pipe valve and the sensor are as shown in the following table 1.

Table 1 shows the types and specifications of the unit modules, the pipe valves, the sensors and other devices in this example

。

While the present invention has been described in detail with reference to the drawings and examples, it will be understood by those skilled in the art that various changes in the specific details of the embodiments may be made without departing from the spirit and scope of the invention, or equivalent substitutions for related parts, structures and materials may be made without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A filling pipeline structure of a hydrogenation machine is characterized by comprising a main hydrogen supply path, a first hydrogen supply branch path and a second hydrogen supply branch path, wherein the main hydrogen supply path comprises an input end communicated with a hydrogen source and an output end respectively communicated with the first hydrogen supply branch path and the second hydrogen supply branch path; the input end of the first hydrogen supply branch is provided with a pressure regulating valve, so that hydrogen output by the output end of the main hydrogen supply path enters the first hydrogen supply branch after pressure regulation.

2. The filling pipeline structure of hydrogenation machine according to claim 1, wherein a needle valve, a filter, a pressure transmitter, a mass flow meter, a check valve and a flow control valve are arranged in the hydrogen supply main path in sequence along the hydrogen conveying direction.

3. The filling pipeline structure of the hydrogenation machine according to claim 2, further comprising a nitrogen purging branch communicated with the hydrogen main supply path and arranged between the needle valve and the filter, wherein a high-pressure solenoid valve and a check valve are sequentially arranged in the nitrogen purging branch along a nitrogen conveying direction.

4. The structure of a filling pipeline of a hydrogenation machine according to claim 3, wherein bypass branches are arranged in parallel at two ends of the high-pressure electromagnetic valve in the nitrogen purging branch, and corresponding needle valves are arranged in the bypass branches.

5. The filling pipeline structure of the hydrogenation machine according to claim 2, wherein the first hydrogen supply branch and the second hydrogen supply branch are respectively and sequentially provided with a corresponding high-pressure solenoid valve, a pressure gauge, a pressure transmitter, a temperature transmitter, a snapping valve, a hydrogenation hose and a hydrogenation gun along the hydrogen conveying direction.

6. The filling pipeline structure of the hydrogenation machine as claimed in claim 5, wherein a corresponding diffusion pipeline and an overload protection pipeline are arranged in each of the first hydrogen supply branch and the second hydrogen supply branch.

7. The hydrogenation machine filling pipeline structure according to claim 5, further comprising an instrument air pipeline, wherein one end of the instrument air pipeline is communicated with an instrument air inlet, and the other end of the instrument air pipeline is respectively communicated with the flow regulating valve and the hydrogenation gun.

8. The hydrogenation machine filling pipeline structure according to claim 7, wherein a pneumatic triple piece is arranged in the instrument air pipeline.

9. The hydromechanical filling line structure of claim 7, wherein the instrument air line is a polyurethane tube.