CN215862879U - Emergency hydrogen supply control system - Google Patents
Emergency hydrogen supply control system Download PDFInfo
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- CN215862879U CN215862879U CN202121765401.8U CN202121765401U CN215862879U CN 215862879 U CN215862879 U CN 215862879U CN 202121765401 U CN202121765401 U CN 202121765401U CN 215862879 U CN215862879 U CN 215862879U
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Abstract
The utility model discloses an emergency hydrogen supply control system, which comprises a control unit and a control object thereof: the device comprises a storage unit, a pipeline unit and a filling unit; the control unit comprises a PLC controller, an analog input module AI, a switching power supply ZD and an input/output terminal; the storage unit comprises a hydrogen packaging grid and a nitrogen packaging grid; the pipeline unit comprises a direct charging pipeline and a pressure regulating pipeline; the hydrogen container grid comprises a first output end communicated with the input end of the direct charging pipeline and a second output end communicated with the input end of the pressure regulating pipeline; the pipeline at the output end of the nitrogen packaging grid is provided with a solenoid valve, a pressure regulating valve, a pressure gauge and a pressure transmitter and is communicated with the pressure regulating pipeline; the input end of the filling unit is communicated with the output end of the pipeline unit, and the input end of the filling unit is provided with two pressure transmitters in parallel; the control system aims to solve the technical problem that the control system of the emergency hydrogenation device is not universal.
Description
Technical Field
The utility model relates to the technical field of hydrogen filling, in particular to an emergency hydrogen supply control system.
Background
Hydrogen energy is a novel energy source, has the advantages of zero pollution, high utilization rate and small danger coefficient compared with the traditional fossil fuel, and is an energy source with huge development potential in the future under the pressure of global coping with climate change and the strategic background of accelerating energy transformation of each country.
Hydrogen is an ideal energy source for replacing petroleum, and a hydrogen fuel cell automobile is the development trend of future environment-friendly vehicles. At present, all mainstream vehicles and enterprises in the world are researching and developing hydrogen fuel cell vehicles. The development of hydrogen fuel cell vehicles is promoted, the support of a hydrogenation station is not left, and the construction of a hydrogenation infrastructure (the hydrogenation station) is essential. In the prior art, a fixed hydrogen station is usually adopted, however, the fixed hydrogen station is large in investment, difficult in site selection and long in construction period, so that the number of hydrogen stations in a short period is small, and the coverage of the hydrogen station is difficult to form a large-scale hydrogen supply network. When the hydrogen fuel cell vehicle needs hydrogenation, the hydrogen fuel cell vehicle needs to travel to a hydrogenation station for hydrogenation before the hydrogen fuel is used up, so that the travel range of the hydrogen fuel cell vehicle is limited, the timely hydrogenation requirement of the hydrogen fuel cell vehicle cannot be met, and the popularization and development of the hydrogen fuel cell vehicle are further limited. And the development of movable emergency hydrogenation units/stations is a currently feasible coping strategy.
The hydrogen supply control system of the existing emergency hydrogenation device/station is only suitable for a single hydrogenation interface or/and fixed filling pressure for filling control, so that the application range of the emergency hydrogenation device is greatly limited.
Disclosure of Invention
The utility model aims to provide an emergency hydrogen supply control system, and aims to solve the technical problem that the existing control system of an emergency hydrogenation device can only perform filling control on a single hydrogenation interface or/and a single filling pressure.
In order to solve the technical problems, the utility model adopts the following technical scheme:
designing an emergency hydrogen supply control system, which comprises a PLC control unit and a control object storage unit, a pipeline unit and an injection unit thereof; the storage unit comprises a hydrogen packaging grid and a nitrogen packaging grid; the pipeline unit comprises a direct charging pipeline and a pressure regulating pipeline; the hydrogen container grid comprises a first output end communicated with the input end of the direct charging pipeline and a second output end communicated with the input end of the pressure regulating pipeline; the output end of the nitrogen packaging grid is provided with an electromagnetic valve, a pressure regulating valve, a pressure gauge and a pressure transmitter and is communicated with the pressure regulating pipeline; the input end of the filling unit is communicated with the output end of the pipeline unit, and the input end of the filling unit is connected with two pressure transmitters in parallel; the PLC control unit comprises a PLC controller, an analog input module AI, a switching power supply ZD and an input/output terminal, and the PLC controller receives and processes the relevant information collected by each pressure transmitter through the analog input module AI and controls the opening and closing of each electromagnetic valve according to a set value or an input instruction.
Preferably, a booster pump and a precooler are arranged in the pressure regulating pipeline; and a one-way valve and a pneumatic valve are arranged in a connecting pipeline of the booster pump and the precooler.
Preferably, the booster pump is a pneumatic booster pump, an exhaust pipeline of the booster pump is communicated with the precooler, and the driving gas of the booster pump is the cooling gas of the precooler.
Preferably, the booster pump driving gas is nitrogen in the nitrogen container.
Preferably, the emergency hydrogen supply device is further provided with a bleeding pipe and a safety valve, one end of the safety valve is communicated with the pipeline unit, and the other end of the safety valve is communicated with the bleeding pipe.
Preferably, the filling unit output interface model is TK16, TK25 or/and TK 17.
Compared with the prior art, the utility model has the main beneficial technical effects that:
1. the control system can adjust and control the hydrogen pressure in the hydrogen filling process, and meet the hydrogen filling requirements of the gas storage tanks with different pressures; and meanwhile, various types of hydrogenation interfaces are configured, so that the universal applicability of the emergency hydrogen filling device is improved.
2. The control system is not only suitable for hydrogen supplement from a hydrogen adding station and a chemical plant by-product hydrogen and new energy (such as a photovoltaic power generation hydrogen station and a solar power generation hydrogen station), but also suitable for directly replacing a full hydrogen packaging grid, saves the hydrogen charging time and greatly improves the rescue efficiency.
Drawings
Fig. 1 is a gas path schematic diagram of a hydrogen filling system of the present invention.
Fig. 2 is an electrical control schematic of the present invention.
FIG. 3 is a flow chart of the metering settlement logic control of the present invention.
FIG. 4 is a flow chart of the control of the fill logic of the present invention.
In the above drawings, 1 is a mobile carrier, 2 is a storage unit, 21 is a nitrogen storage unit, 22 is a nitrogen storage unit, 3 is a pipeline unit, 31 is a direct charging pipeline, 32 is a pressure regulating pipeline, 4 is a charging unit, 5 is a booster pump, 6 is a precooler, 7 is a flow meter, 8 is a safety valve, 9 is a temperature transmitter, 10 is a charging interface, 11 is a pressure gauge, 12 is a pressure transmitter, 13 is a pneumatic control valve, 14 is a one-way valve, 15 is an electromagnetic valve, 16 is a pressure regulating valve, 17 is an operation panel, and 18 is an explosion-proof control box.
Detailed Description
The following examples are intended to illustrate the present invention in detail and should not be construed as limiting the scope of the present invention in any way.
Example 1: an emergency hydrogen supply control system, see fig. 1 and fig. 2, includes a control unit mounted on the mobile carrier 1, a storage unit 2 for control object thereof, a pipeline unit 3 and a filling unit 4; the storage unit 2 comprises a hydrogen storage unit 21 and a nitrogen storage unit 22; the PLC control unit comprises a PLC controller, an analog input module AI, a switching power supply ZD and an input/output terminal; the hydrogen storage unit 21 consists of a plurality of hydrogen packaging grids, and hydrogen can be supplemented from a hydrogen station by adopting the design of the hydrogen packaging grids, and hydrogen can also be obtained from byproduct hydrogen and new energy sources (such as a photovoltaic power generation hydrogen station and a solar power generation hydrogen station) of a chemical plant, so that the hydrogen source of the emergency hydrogen supply system is greatly expanded, and the rescue range of the emergency hydrogen supply system is also increased; the hydrogen packaging grid outlet end with 3 entry ends of pipeline unit switch on through the pipe, set gradually manometer, pressure transmitter and gas accuse valve on the exit end pipeline of hydrogen packaging grid, the hydrogen pressure in the hydrogen packaging grid is shown in real time to the manometer, pressure transmitter converts the pressure in the hydrogen packaging grid into the signal of telecommunication and conveys to the PLC controller, the gas accuse valve is established on the main pipeline of hydrogen packaging grid export, controls the break-make of hydrogen.
The nitrogen storage unit 22 is also composed of a plurality of nitrogen packaging grids, and a first electromagnetic valve, a pressure regulating valve 11, a pressure gauge, a pressure transmitter and a second electromagnetic valve are arranged on an output end main pipeline of each nitrogen packaging grid; first solenoid valve control nitrogen gas container check output nitrogen gas break-make, the nitrogen gas break-make that the second solenoid valve control got into booster pump 5, after the different nitrogen pressure of air-vent valve 31 regulation, reach the hydrogen pressure of needs after 5 pressure boost through the booster pump, the manometer shows the pressure value after 11 pressure regulating of nitrogen gas through the air-vent valve, pressure transmitter converts nitrogen pressure into the signal of telecommunication, then sends the PLC controller.
The pipeline unit 3 comprises a direct filling pipeline 31 and a pressure regulating pipeline 32, the inlet end of the direct filling pipeline 31 is communicated with the main pipeline of the hydrogen packaging grid 21, a pneumatic control valve and a one-way valve are arranged on the direct filling pipeline 31, the pneumatic control valve controls the on-off of the direct filling pipeline 31, when the direct filling function is required, the pneumatic control valve is opened, and the one-way valve prevents reverse flow of high-pressure hydrogen during direct filling, so that certain potential safety hazard is caused; the pressure regulating pipeline 32 is communicated with the main pipeline of the hydrogen container grid 21 pipeline, and is sequentially provided with a first pneumatic control valve, a first one-way valve, a booster pump 5, a second one-way valve, a second pneumatic control valve and a precooler 6, wherein the booster pump 5 is a 2GBD series gas booster pump, is driven by gas, is free of electric arc and spark, is suitable for flammable and explosive gas and places, does not need any power supply, and is used for boosting the gas by using compressed air as a power source, when the outlet pressure reaches a preset pressure value, the air booster valve in the booster pump 5 automatically stops working, when the outlet pressure is lower than the preset pressure value, the pressure is automatically supplemented, the pressure is kept constant, and no additional energy is consumed during pressure maintaining; the first pneumatic control valve controls hydrogen to go to the booster pump 5, when the booster pump 5 is required to be boosted, the first pneumatic control valve is opened, the first one-way valve and the second one-way valve have the same function, potential safety hazards caused by backflow of high-pressure hydrogen in the pipe are prevented, the second pneumatic control valve controls the on-off of the boosted hydrogen, the booster pump 5 is communicated with the nitrogen packaging grid 22 through a pipeline, an exhaust pipeline of the booster pump 5 is connected with the precooler 6, exhaust gas of driving gas of the booster pump 5 is used as cooling gas of the precooler 6, and the driving gas of the booster pump 5 is nitrogen in the nitrogen packaging grid 22; the direct charging pipeline 31 is communicated with the pressure regulating pipeline 32 and then communicated with the charging unit 4, a flowmeter 7, a safety valve 8, a temperature transmitter 9, a pressure gauge, a pressure transmitter and different pressure charging interfaces 10 are sequentially arranged, the flowmeter 7 measures the mass of the filled hydrogen, the safety valve 8 is communicated with a relief pipeline and is provided with a standard pressure value, when the pressure in the pipeline is larger than a set standard value, the safety valve 8 is automatically opened to release air, the safety of the filling system is ensured, the temperature transmitter 9 converts the pipeline temperature into an electric signal and transmits the electric signal to the PLC, the pressure gauge displays the pipeline pressure, the two pressure transmitters convert the pipeline pressure into an electric signal and transmit the electric signal to the PLC, and the two pressure transmitters are used as a basis for mutual calibration, so that the reliability of the system is improved; the filling interface 10 comprises 35MPa TK16, TK17 and 70MPa TK25 hydrogenation guns, and a proper hydrogenation gun is selected according to a gas storage tank interface and pressure to be filled.
The working method of the emergency hydrogen supply filling control system is as follows (see fig. 3 and fig. 4):
s1, touching the human body electrostatic discharge alarm by the operator until the electrostatic discharge is finished is prompted by voice;
s2, the emergency hydrogen filling system selects the TK16, the TK25 or the TK17 filling gun interface according to the touch screen of the control system of the device to be hydrogenated, manually connects the hydrogenation gun and the hydrogen storage bottle interface, and clicks a start button on the touch screen of the control system;
s3, the PLC controller automatically starts the direct charging pipeline to charge air if the pressure difference between the nitrogen container grid and the hydrogen storage bottle is more than 0.5Mpa according to the pressure difference between the nitrogen container grid and the hydrogen storage bottle provided by the pressure transmitter;
s4, when the filling pressure difference is less than 0.5MPa, the PLC control system closes the valve switch on the direct filling pipeline;
s5, opening the valve switch on the nitrogen container grid and the pressure regulating pipeline by the PLC controller to start compression and filling;
s6, when the filling pressure is not less than 35MPa or the flow rate is less than 1 g per second, closing the valve switches on the hydrogen container grid, the nitrogen container grid, the pressure regulating pipeline and the filling interface to finish filling;
and S7, the PLC displays the weight and the amount of the hydrogen gas according to the data provided by the mass flow meter.
While the utility model 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 details of the embodiments and various changes in the details of construction and materials may be made therein without departing from the spirit of the utility model and without departing from the scope of the utility model.
Claims (7)
1. An emergency hydrogen supply control system comprises a control unit, a control object storage unit, a pipeline unit and a filling unit; the control unit is characterized by comprising a PLC (programmable logic controller), an analog input module AI, a switching power supply ZD and an input/output terminal; the storage unit comprises a hydrogen container grid or/and a nitrogen container grid; the pipeline unit comprises a direct charging pipeline and a pressure regulating pipeline; the hydrogen container grid comprises a first output end communicated with the input end of the direct charging pipeline and a second output end communicated with the input end of the pressure regulating pipeline; the output end of the nitrogen packaging grid is provided with an electromagnetic valve, a pressure regulating valve, a pressure gauge and a pressure transmitter and is communicated with the pressure regulating pipeline; the input end of the filling unit is communicated with the output end of the pipeline unit, and the input end of the filling unit is provided with two pressure transmitters in parallel; and the PLC receives and processes the relevant information collected by the pressure transmitter through an analog input module AI, and controls the opening and closing of the electromagnetic valve according to a set value or an input instruction.
2. The emergency hydrogen supply control system of claim 1, wherein a booster pump and a precooler are disposed in the pressure regulating line; and a one-way valve and a pneumatic valve are arranged in a connecting pipeline of the booster pump and the precooler.
3. The emergency hydrogen supply control system according to claim 2, wherein the booster pump is a pneumatic booster pump, and an exhaust line of the booster pump is communicated with the precooler, and a driving gas of the booster pump is derived from a cooling gas of the precooler.
4. An emergency hydrogen supply control system according to claim 3 wherein the booster pump drive gas is derived from nitrogen stored in the nitrogen container.
5. The emergency hydrogen supply control system according to claim 1, wherein the emergency hydrogen supply device is further provided with a purge pipe and a safety valve, the safety valve being in communication with the piping unit at one end and the purge pipe at the other end.
6. The emergency hydrogen supply control system of claim 1, wherein the filling unit output interface model is set to TK16, TK25, or/and TK 17.
7. The emergency hydrogen supply control system according to claim 1, wherein the control unit and the control object storage unit, the pipeline unit and the filling unit thereof are disposed on the corresponding mobile carrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121765401.8U CN215862879U (en) | 2021-07-30 | 2021-07-30 | Emergency hydrogen supply control system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121765401.8U CN215862879U (en) | 2021-07-30 | 2021-07-30 | Emergency hydrogen supply control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114893714A (en) * | 2022-04-24 | 2022-08-12 | 正星氢电科技郑州有限公司 | Single-metering 35MPa and 70MPa double-gun hydrogen filling system and control method thereof |
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2021
- 2021-07-30 CN CN202121765401.8U patent/CN215862879U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114893714A (en) * | 2022-04-24 | 2022-08-12 | 正星氢电科技郑州有限公司 | Single-metering 35MPa and 70MPa double-gun hydrogen filling system and control method thereof |
| CN114893714B (en) * | 2022-04-24 | 2023-11-21 | 正星氢电科技郑州有限公司 | Single-metering 35MPa and 70MPa double-gun hydrogen filling system and control method thereof |
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