CN113390017A - Hydrogen conveying system for hydrogenation vehicle - Google Patents
Hydrogen conveying system for hydrogenation vehicle Download PDFInfo
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- CN113390017A CN113390017A CN202010167920.8A CN202010167920A CN113390017A CN 113390017 A CN113390017 A CN 113390017A CN 202010167920 A CN202010167920 A CN 202010167920A CN 113390017 A CN113390017 A CN 113390017A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
- F17D1/04—Pipe-line systems for gases or vapours for distribution of gas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/04—Arrangement or mounting of valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/01—Pure fluids
- F17C2221/012—Hydrogen
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2265/00—Effects achieved by gas storage or gas handling
- F17C2265/06—Fluid distribution
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2270/00—Applications
- F17C2270/01—Applications for fluid transport or storage
- F17C2270/0165—Applications for fluid transport or storage on the road
- F17C2270/0184—Fuel cells
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/34—Hydrogen distribution
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
本发明提供一种用于加氢车的氢气输送系统，包括氢气输送管线、氢气输送压力调节组件和控制单元；氢气输送压力调节组件设置在氢气输送管线上，氢气输送压力调节组件与控制单元连接，氢气输送压力调节组件按照控制单元内设定的压力曲线调节氢气输送压力调节组件后方的氢气输送管线内的氢气输送压力。解决现有加氢过程时，由于加氢机内的储氢罐和车载储氢瓶的压力差值大，使得氢气输送管路内的氢气流量先大后小，造成加氢车内的车载储氢瓶内加注氢气后容易出现温度超标的可能的缺陷，以及氢气输送管路内的氢气流量随着加氢机内的储氢罐和车载储氢瓶的压差变小而变小，使得加氢车内的储氢瓶内加注氢气时间长的问题。
The invention provides a hydrogen delivery system for a hydrogenation vehicle, comprising a hydrogen delivery pipeline, a hydrogen delivery pressure regulating component and a control unit; the hydrogen delivery pressure regulating component is arranged on the hydrogen delivery pipeline, and the hydrogen delivery pressure regulating component is connected with the control unit , the hydrogen delivery pressure regulating component adjusts the hydrogen delivery pressure in the hydrogen delivery pipeline behind the hydrogen delivery pressure regulating component according to the pressure curve set in the control unit. When solving the existing hydrogenation process, due to the large pressure difference between the hydrogen storage tank in the hydrogenation machine and the on-board hydrogen storage bottle, the hydrogen flow in the hydrogen delivery pipeline is first large and then small, resulting in the on-board storage in the hydrogen refueling vehicle. After the hydrogen bottle is filled with hydrogen, it is easy to have the possibility that the temperature exceeds the standard, and the hydrogen flow in the hydrogen delivery pipeline decreases with the decrease of the pressure difference between the hydrogen storage tank in the hydrogenation machine and the vehicle-mounted hydrogen storage bottle, making The problem of long filling time of hydrogen in the hydrogen storage bottle in the hydrogen refueling vehicle.
Description
Technical Field
The invention belongs to a pipeline system of a hydrogenation machine in a hydrogen fuel cell automobile hydrogenation station, and particularly relates to a hydrogen conveying system for a hydrogenation vehicle.
Background
Hydrogen energy and fuel cell technologies have achieved consensus on a global scale as important innovative technologies for promoting low-carbon and environmentally friendly development of economic society. Since 2016, domestic exemplary hydrogen stations began to build and operate as the domestic fuel cell automobile market increased and the country continued to introduce industry-supporting policies. The hydrogenation stations face a plurality of types of hydrogenation vehicles, such as logistics vehicles, buses and the like; the hydrogenation pressure grades are 35MPa and 70 MPa; as most of vehicle-mounted hydrogen storage bottles of the hydrogen filling vehicle adopt an aluminum liner fiber winding bottle (type III) and a plastic liner fiber winding bottle (type IV), the vehicle-mounted hydrogen storage bottles have requirements on temperature use, particularly the temperature in the whole process of hydrogen filling is not higher than 85 ℃, meanwhile, the hydrogen filling time is expected to be as short as possible, namely, the hydrogen filling efficiency is improved on the premise of ensuring the safety of the hydrogen filling.
At present, a hydrogenation station mainly adopts a hydrogenation machine to fill hydrogen into a vehicle-mounted hydrogen storage bottle in a hydrogenation vehicle, specifically, a hydrogen storage tank in the hydrogenation machine fills hydrogen into the hydrogen storage bottle in the hydrogenation vehicle through a hydrogen conveying pipeline, the hydrogen conveying pipeline comprises three pipelines of low pressure, medium pressure and high pressure, each pipeline is provided with an electromagnetic switch valve, and partial throttling is carried out on the hydrogen through a flow limiting orifice plate. The main problems are as follows:
1) during the hydrogenation process, because the pressure difference value of the hydrogen storage tank and the vehicle-mounted hydrogen storage bottle in the hydrogenation machine is large, the hydrogen flow in the hydrogen conveying pipeline is large firstly and then small, on one hand, the temperature of the vehicle-mounted hydrogen storage bottle is quickly increased and then reduced, the possibility that the temperature exceeds the standard easily occurs after the hydrogen is filled in the vehicle-mounted hydrogen storage bottle in the hydrogenation machine is caused, the abrasion to a hydrogen conveying pipeline is large, on the other hand, the hydrogen flow in the hydrogen conveying pipeline is reduced along with the reduction of the pressure difference between the hydrogen storage tank and the vehicle-mounted hydrogen storage bottle in the hydrogenation machine, and the time for filling the hydrogen in the hydrogen storage bottle in the hydrogenation machine is long.
2) The inner structure space of the hydrogenation machine is limited, when three hydrogen conveying pipelines are adopted to fill hydrogen into a vehicle-mounted hydrogen storage bottle in a hydrogenation vehicle, three-way cut-off valves, manual valves and pressure transmitters are required to be configured, so that the inner structure of the hydrogenation machine is complex, and due to space limitation, a high-pressure-resistant electromagnetic switch valve is required to be adopted as a switch valve, and the valve is free of valve switch position detection and low in reliability.
3) The hydrogen conveying pipeline in the hydrogenation machine can not adapt to the adjustment of the hydrogen conveying speed in the pipeline according to the environmental temperature, so that the time for filling hydrogen into the hydrogen storage bottle in the hydrogen fuel cell vehicle is further prolonged.
4) The hydrogenation machine with the pressure grade of 35MPa needs to be matched with a hydrogen precooling system because the hydrogen filling flow is unstable, and the filling hydrogen is precooled to about 0 ℃, so that the equipment investment and the operation cost are additionally increased.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a hydrogen conveying system for a hydrogenation vehicle, which solves the problems in the prior art.
The invention is realized by the following technical scheme:
the invention provides a hydrogen conveying system for a hydrogenation vehicle, which comprises a hydrogen conveying pipeline, a hydrogen conveying pressure regulating assembly and a control unit, wherein the hydrogen conveying pipeline is connected with the hydrogen conveying pressure regulating assembly;
the hydrogen conveying pressure adjusting assembly is arranged on the hydrogen conveying pipeline and connected with the control unit, and the hydrogen conveying pressure adjusting assembly adjusts the hydrogen conveying pressure in the hydrogen conveying pipeline behind the hydrogen conveying pressure adjusting assembly according to a pressure curve set in the control unit.
Further, the hydrogen gas delivery pressure regulating assembly comprises a pressure regulating valve and a first pressure transmitter;
the pressure regulating valve and the first pressure transmitter are arranged on the hydrogen conveying pipeline, the input end of the first pressure transmitter is used for acquiring the pressure in the vehicle-mounted hydrogen storage bottle, the output end of the first pressure transmitter is connected with the input end of the control unit, and the output end of the control unit is connected with the pressure regulating valve;
the first pressure transmitter is used for measuring the pressure in the hydrogen storage bottle of the hydrogenation vehicle in real time and sending the initial pressure in the hydrogen storage bottle of the hydrogenation vehicle to the control unit, the control unit generates a pressure curve according to the initial pressure in the hydrogen storage bottle of the hydrogenation vehicle and the target pressure to be reached in the hydrogen storage bottle of the hydrogenation vehicle and sends the pressure curve to the pressure regulating valve, and the pressure regulating valve regulates the hydrogen conveying pressure in the conveying pipeline behind the pressure regulating valve according to the pressure curve.
Furthermore, the hydrogen conveying pressure regulating assembly also comprises a second pressure transmitter, the second pressure transmitter is arranged on the hydrogen conveying pipeline and is used for measuring the pressure in a hydrogen storage bottle of the hydrogenation vehicle in real time, and the output end of the second pressure transmitter is connected with the input end of the control unit;
and when the first pressure transmitter fails, the second pressure transmitter sends the initial pressure in the hydrogen storage bottle of the hydrogenation vehicle to the control unit.
Further, the hydrogen conveying pipeline adopts a single hydrogen conveying pipeline;
the hydrogen inlet position of single hydrogen pipeline sets up overhauls the subassembly, it includes first manual valve to overhaul the subassembly, and manual valve of second and atmospheric valve, the atmospheric valve is established between first manual valve and the manual valve of second.
Further, the device also comprises a temperature sensor;
the sensing end of the temperature sensor is used for sensing the ambient temperature, the output end of the temperature sensor is connected with the input end of the control unit, the output end of the temperature sensor sends an ambient temperature value to the input end of the control unit, and the control unit drives the hydrogen conveying pressure adjusting assembly to adjust the hydrogen conveying pressure in the hydrogen conveying pipeline behind the hydrogen conveying pressure adjusting assembly according to the received ambient temperature value sent by the temperature sensor.
Furthermore, a hydrogen inlet of the hydrogen conveying pipeline is provided with a first switch valve, and the first switch valve adopts a pneumatic switch valve.
Further, the device also comprises a nitrogen replacement valve, wherein the nitrogen replacement valve is arranged at the hydrogen inlet position of the single hydrogen conveying pipeline.
Further, the hydrogen supply device also comprises a filter, wherein the filter is arranged on the hydrogen conveying pipeline.
Furthermore, the hydrogen gas pressure measuring device further comprises a third pressure transmitter, wherein the third pressure transmitter is arranged at a position close to the hydrogen inlet of the hydrogen conveying pipeline and is used for measuring the pressure of the hydrogen inlet of the hydrogen conveying pipeline.
Further, the control unit is connected with the first switch valve, the pressure regulating valve feeds the real-time boosting rate of the pressure regulating valve back to the control unit, and when the control unit judges that the boosting rate of the pressure regulating valve continuously exceeds the slope of a pressure curve for 10-15 seconds, the control unit drives the first switch valve to be closed.
Further, when the pressure in the hydrogen storage bottle of the hydrogen adding vehicle measured by the first pressure transmitter is lower than 0.5MPa or higher than a target pressure to be reached, the control unit drives the first switch valve to be closed.
Further, the hydrogen gas supply device also comprises a temperature transmitter, wherein the temperature transmitter is arranged on the hydrogen gas conveying pipeline;
the sensing end of the temperature transmitter is used for sensing the hydrogen filling temperature, the output end of the temperature transmitter is connected with the input end of the control unit, and the output end of the temperature sensor sends the hydrogen filling temperature to the input end of the control unit;
when the filling temperature of the hydrogen received by the control unit is higher than 85 ℃, the control unit drives the first switch valve to be closed.
The inlet end of the hydrogen outlet component is connected with the hydrogen outlet of the hydrogen conveying pipeline, and the outlet end of the hydrogen outlet component is used for being connected with a hydrogen filling port of the hydrogenation vehicle.
Further, the hydrogen outlet assembly includes a first hydrogen outlet assembly and a second hydrogen outlet assembly.
Further, the first hydrogen outlet assembly comprises a first hydrogen outlet pipeline, a first breaking valve, a first hose, a first filling gun head and a first gun seat;
the inlet end of the first hydrogen outlet pipeline is connected with the hydrogen outlet of the hydrogen conveying pipeline, and the outlet end of the first hydrogen outlet pipeline is used for being connected with a hydrogen filling port of the hydrogenation vehicle;
the first breaking valve, the first hose and the first filling gun heads are arranged on the first hydrogen outlet pipeline in an arrangement sequence from far to near along the outlet end of the first hydrogen outlet pipeline, and the first gun seat is provided with the first filling gun heads;
the second hydrogen outlet assembly comprises a second hydrogen outlet pipeline, a second breaking valve, a second hose, a second filling gun head and a second gun seat;
the inlet end of the second hydrogen outlet pipeline is connected with the hydrogen outlet of the hydrogen conveying pipeline, and the outlet end of the second hydrogen outlet pipeline is used for being connected with a hydrogen filling port of the hydrogenation vehicle;
the second breaking valve, the second hose and the second filling gun heads are arranged on the second hydrogen outlet pipeline in an arrangement sequence from far to near along the outlet end of the second hydrogen outlet pipeline, and the second gun seat is provided with the second filling gun heads.
Further, a second switch valve is arranged at the inlet end of the first hydrogen outlet pipeline, and the second switch valve is a pneumatic switch valve; and a third switch valve is arranged at the inlet end of the second hydrogen outlet pipeline, and the third switch valve adopts a pneumatic switch valve.
Further, the device also comprises a first position sensor and a second position sensor;
the sensing end of the first position sensor is arranged at the contact position of the first gun seat and the first filling gun head and is used for sensing the position of the first filling gun head, the output end of the first position sensor is connected with the input end of the control unit, the output end of the control unit is connected with the second switch valve, and when the pressure sensing value received by the control unit from the first position sensor is smaller than a set value, the second switch valve is driven to be opened;
the induction end of the second position sensor is arranged at the contact position of the second gun base and the second filling gun head and used for inducing the position of the second filling gun head, the output end of the second position sensor is connected with the input end of the control unit, the output end of the control unit is connected with the third switch valve, and when the pressure induction value received by the control unit from the second position sensor is smaller than a set value, the third switch valve is driven to be opened.
Further, the output end of the second pressure transmitter is connected with the input end of the control unit, and the second pressure transmitter sends the measured pressure of the hydrogen inlet of the hydrogen conveying pipeline to the control unit;
before filling hydrogen into the hydrogenation car, the control unit compares the pressure of the hydrogen inlet of the hydrogen conveying pipeline with the initial pressure in the hydrogen storage bottle of the hydrogenation car, if the difference value between the pressure and the initial pressure is smaller than a set value, the hydrogen storage tank connected with the inlet of the hydrogen conveying pipeline is replaced, and if the difference value between the pressure and the initial pressure is larger than the set value, the hydrogen is filled into the hydrogenation car.
Further, the hydrogen supply device further comprises a safety valve, and the safety valve is arranged on the hydrogen conveying pipeline.
Further, the hydrogen conveying pipeline comprises a mass flow meter, and the mass flow meter is arranged at the hydrogen outlet position of the hydrogen conveying pipeline.
Compared with the closest prior art, the technical scheme of the invention has the following beneficial effects:
the invention provides a hydrogen conveying system for a hydrogenation vehicle, which comprises a hydrogen conveying pressure adjusting component arranged on a hydrogen conveying pipeline, and the hydrogen conveying pressure adjusting component is connected with the control unit, so that the hydrogen conveying pressure adjusting component adjusts the hydrogen conveying pressure in the hydrogen conveying pipeline behind the hydrogen conveying pressure adjusting component according to the pressure curve set in the control unit, compared with the prior mode of adjusting the flow of hydrogen by adopting a flow-limiting orifice plate, the method realizes the stable conveying of the hydrogen in the hydrogen storage tank in the hydrogenation machine to the vehicle-mounted hydrogen storage bottle in the hydrogenation vehicle, because of the stability of hydrogen flow, the vehicle-mounted hydrogen storage bottle has slow pressure rise, enough heat dissipation time and controllable temperature within 85 ℃, the abrasion probability of a hydrogen conveying pipeline is reduced, the hydrogen filling time is relatively reduced, a hydrogen precooling system does not need to be matched, and the equipment investment and the operation cost are reduced.
According to the hydrogen conveying system for the hydrogenation vehicle, the hydrogen conveying pressure adjusting assembly is arranged on the hydrogen conveying pipeline, the temperature sensor is used for sensing the ambient temperature on the basis of the connection of the hydrogen conveying pressure adjusting assembly and the control unit, the temperature sensor is connected with the control unit, and the control unit drives the hydrogen conveying pressure adjusting assembly to adjust the hydrogen conveying pressure in the hydrogen conveying pipeline behind the hydrogen conveying pressure adjusting assembly according to the received ambient temperature value sent by the temperature sensor, so that the hydrogen filling time is further shortened.
According to the hydrogen conveying system for the hydrogenation vehicle, the hydrogen conveying pipeline adopts a single hydrogen conveying pipeline, and the structure of the hydrogen conveying pipeline is simplified and the arrangement space of the hydrogen conveying pipeline in the hydrogenation machine is saved in the existing mode that the hydrogen conveying pipeline comprises three pipelines of low pressure, medium pressure and high pressure.
According to the hydrogen conveying system for the hydrogenation vehicle, the safety valve is arranged on the hydrogen conveying pipeline, so that overpressure protection of the pipeline is facilitated, the mass flow meter is arranged on the hydrogen conveying pipeline, so that filling settlement of hydrogen is facilitated, accuracy of hydrogen filling is ensured, and the filter is arranged on the hydrogen conveying pipeline, so that impurities in the pipeline are filtered conveniently.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a hydrogen gas delivery system for a hydrogen refueling truck according to the present invention;
FIG. 2 is a schematic flow diagram of hydrogen filling for a hydrogenation vehicle using the hydrogen delivery system of the present invention;
wherein, 1-hydrogen conveying pipeline, 2-nitrogen replacing valve, 3-filter, 4-first switch valve, 5-first manual valve, 6-second manual valve, 7-first emptying valve, 8-pressure regulating valve, 9-first pressure transmitter, 10-second pressure transmitter, 11-first hydrogen outlet pipeline, 12-first breaking valve, 13-first hose, 14-first operating hand valve, 15-second switch valve, 16-second hydrogen outlet pipeline, 17-second breaking valve, 18-second hose, 19-second operating hand valve, 20-third switch valve, 21-third pressure transmitter, 22-temperature transmitter, 23-mass flowmeter, 24-safety valve, 25-emptying pipeline, 26-second emptying valve, 27-one-way valve and 28-emptying hand valve.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the present embodiment provides a hydrogen conveying system for a hydrogenation vehicle, which includes a hydrogen conveying pipeline 1, a hydrogen conveying pressure adjusting assembly, a control unit (not shown in the figure) and a hydrogen outlet assembly, where the control unit may be an independent unit, or a PLC system in a hydrogenation machine may be used as the control unit;
The hydrogen conveying pressure adjusting assembly is arranged on a single hydrogen conveying pipeline and comprises a pressure adjusting valve 8 and a first pressure transmitter 9, the pressure adjusting valve 8 and the first pressure transmitter 9 are arranged on the single hydrogen conveying pipeline, the specific figure shows that the pressure adjusting valve 8 is arranged behind the first switch valve 4, and the first pressure transmitter 9 is arranged behind the pressure adjusting valve 8; the first pressure transmitter 9 is used for measuring the pressure in the hydrogen storage bottle of the hydrogenation vehicle in real time, the output end of the first pressure transmitter 9 is connected with the input end of the control unit, the output end of the control unit is connected with the pressure regulating valve 8, the first pressure transmitter 9 sends the initial pressure in the hydrogen storage bottle of the hydrogenation vehicle to the control unit, the control unit generates a pressure curve according to the initial pressure in the hydrogen storage bottle of the hydrogenation vehicle and the target pressure to be reached in the hydrogen storage bottle of the hydrogenation vehicle and sends the pressure curve to the pressure regulating valve 9, and the pressure regulating valve 9 regulates the hydrogen conveying pressure in the hydrogen conveying pipeline 1 behind the pressure regulating valve according to the pressure curve;
in order to prevent the first pressure transmitter 9 from failing to work, the hydrogen conveying pressure regulating assembly of the present embodiment further includes a second pressure transmitter 10, the second pressure transmitter 10 is disposed on the hydrogen conveying pipeline 1, specifically, behind the first pressure transmitter 9, the second pressure transmitter 10 is used for measuring the pressure in the hydrogen storage bottle of the hydrogen truck in real time, and the output end of the second pressure transmitter 10 is connected to the input end of the control unit;
when the first pressure transmitter 9 malfunctions, the second pressure transmitter 10 transmits the initial pressure in the hydrogen storage bottle of the hydrogen truck to the control unit.
In order to ensure the safety of hydrogen filling, the control unit is connected with the first switch valve 4, the pressure regulating valve 8 feeds the real-time pressure increasing rate of the pressure regulating valve 8 back to the control unit, and when the control unit judges that the pressure increasing rate of the pressure regulating valve 8 continuously exceeds the slope of the pressure curve for 10-15 seconds, particularly preferably when the control unit judges that the pressure increasing rate of the pressure regulating valve 8 continuously exceeds the slope of the pressure curve for 15 seconds, the control unit drives the first switch valve 4 to be closed;
or when the pressure in the hydrogen storage bottle of the hydrogen adding vehicle measured by the first pressure transmitter 9 is lower than 0.5MPa or higher than the target pressure (35MPa or 70MPa) to be reached, the control unit drives the first switch valve 4 to be closed.
The hydrogen outlet assembly comprises a hydrogen outlet pipeline, a snapping valve, a hose, a filling gun head and a gun seat, wherein the inlet end of the hydrogen outlet assembly is connected with the hydrogen outlet of a single hydrogen conveying pipeline, the outlet end of the hydrogen outlet assembly is used for being connected with a hydrogen filling port of a hydrogenation vehicle, in order to enable the filling gun head of the hydrogen outlet assembly to perform hydrogen filling on various types of hydrogenation vehicles, the hydrogen outlet assemblies are provided with various types, two hydrogen outlet assemblies are shown in the figure, and the hydrogen outlet assembly specifically comprises a first hydrogen outlet assembly and a second hydrogen outlet assembly;
the first hydrogen outlet assembly comprises a first hydrogen outlet pipeline 11, a first breaking valve 12, a first hose 13, a first filling gun head (not shown in the figure) and a first gun seat (not shown in the figure);
the inlet end of the first hydrogen outlet pipeline 11 is connected with the hydrogen outlet of the single hydrogen conveying pipeline, and the inlet end of the first hydrogen outlet pipeline is provided with a second switch valve 15, and the second switch valve 15 is preferably a pneumatic switch valve;
the first snapping valve 12, the first hose 13 and the first filling gun head are arranged on the first hydrogen outlet pipeline 11 in a sequence from far to near along the outlet end of the first hydrogen outlet pipeline, the first filling gun head is arranged at the outlet end of the first hydrogen outlet pipeline 11, specifically, a first gun base is arranged at the outlet end of the first hydrogen outlet pipeline 11, the first filling gun head is arranged on the first gun base and is used for being connected with a hydrogen filling port of a hydrogenation vehicle, and specifically, the first filling gun head can be connected with or separated from the hydrogen filling port of the hydrogenation vehicle by rotating a first operating hand valve 14 on the first filling gun head;
the second hydrogen outlet assembly comprises a second hydrogen outlet pipeline 16, a second breaking valve 17, a second hose 18, a second filling gun head (not shown in the figure) and a second gun seat (not shown in the figure);
the inlet end of the second hydrogen outlet pipeline is connected with the hydrogen outlet of the single hydrogen conveying pipeline, a third switch valve 20 is arranged at the inlet end of the second hydrogen outlet pipeline, and the third switch valve 20 is preferably a pneumatic switch valve;
the second snapping valve 17, the second hose 18 and the second filling gun head are arranged on the second hydrogen outlet pipeline 16 in the sequence from far to near along the outlet end of the second hydrogen outlet pipeline, the second filling gun head is arranged at the outlet end of the second hydrogen outlet pipeline 16, specifically, a second gun base is arranged at the outlet end of the second hydrogen outlet pipeline 16, the second filling gun head is arranged on the second gun base and is used for being connected with the hydrogen filling port of the hydrogenation vehicle, and specifically, the second filling gun head can be connected with or separated from the hydrogen filling port of the hydrogenation vehicle by rotating a second operating hand valve 19 on the second filling gun head.
In order to avoid the wrong operation that when the first filling gun head is used for filling the hydrogen filling opening of the hydrogenation vehicle, the third switch valve 20 is manually opened to enable hydrogen to enter the second filling gun head, or when the second filling gun head is used for filling the hydrogen filling opening of the hydrogenation vehicle, the second switch valve 15 is manually opened to enable hydrogen to enter the first filling gun head, the hydrogen conveying system of the hydrogenation vehicle further comprises a first position sensor and a second position sensor (not shown in the figure);
the sensing end of the first position sensor is arranged at the contact position of the first gun seat and the first filling gun head and used for sensing the position of the first filling gun head, the output end of the first position sensor is connected with the input end of the control unit, the output end of the control unit is connected with the second switch valve 15, and when the control unit receives a signal of the first position sensor, the second switch valve 15 is driven to be opened;
the sensing end of the second position sensor is arranged at the contact position of the second gun base and the second filling gun head and used for sensing the position of the second filling gun head, the output end of the second position sensor is connected with the input end of the control unit, the output end of the control unit is connected with the third switch valve 20, and when the control unit receives a signal of the second position sensor, the third switch valve 20 is driven to be opened.
In order to ensure that the hydrogen gas is filled normally, the hydrogen gas conveying system further comprises a third pressure transmitter 21, the third pressure transmitter 21 is arranged at a position close to the hydrogen gas inlet of the single hydrogen gas conveying pipeline, schematically arranged between the nitrogen gas replacement valve 2 and the filter 3 in the figure and used for measuring the pressure of the hydrogen gas inlet of the hydrogen gas conveying pipeline 1, the output end of the third pressure transmitter 21 is connected with the input end of the control unit, and the third pressure transmitter 21 transmits the measured pressure of the hydrogen gas inlet of the single hydrogen gas conveying pipeline to the control unit; before hydrogen is filled into the hydrogenation car, the control unit compares the pressure of a hydrogen inlet of a single hydrogen conveying pipeline with the initial pressure in a hydrogen storage bottle of the hydrogenation car, if the difference between the pressure and the initial pressure is smaller than a set value, a hydrogen storage tank connected with the inlet of the hydrogen conveying pipeline 1 is replaced, the hydrogen storage tank with higher pressure is used for filling, if the difference between the pressure and the initial pressure is larger than the set value, the hydrogen is filled into the hydrogenation car, for example, if the difference between the pressure and the difference is smaller than 2MPa, the hydrogen storage tank connected with the inlet of the hydrogen conveying pipeline 1 is replaced, and if the difference between the pressure and the difference is larger than 2MPa, the hydrogen is filled into the hydrogenation car.
The hydrogen conveying system also comprises a temperature sensor (not shown in the figure), the sensing end of the temperature sensor is used for sensing the ambient temperature, the output end of the temperature sensor is connected with the input end of the control unit, the output end of the temperature sensor sends the ambient temperature value to the input end of the control unit, the control unit drives the pressure regulating valve 8 to regulate the hydrogen conveying pressure in the hydrogen conveying pipeline behind the pressure regulating valve 8 according to the received ambient temperature value sent by the temperature sensor, thereby realizing the matching of the hydrogen conveying speed in the hydrogen conveying pipeline 1 and the ambient temperature, when the ambient temperature is low, the hydrogen gas transport pressure in the hydrogen gas transport line 1 behind the pressure regulating valve 8 can be adjusted to be high by the driving pressure regulating valve 8, thereby improving the hydrogen conveying speed in the hydrogen conveying pipeline 1 and further achieving the effect of further shortening the hydrogen filling time.
The hydrogen conveying system also comprises a temperature transmitter 22, a mass flow meter 23, a safety valve 24 and a venting pipeline component;
the temperature transmitter 22 is disposed on a single hydrogen delivery line, the temperature transmitter 22 being shown disposed at the hydrogen outlet location of the single hydrogen delivery line; the sensing end of the temperature transmitter 22 is used for sensing the hydrogen filling temperature, the output end of the temperature transmitter 22 is connected with the input end of the control unit, and the output end of the temperature sensor 22 sends the hydrogen filling temperature to the input end of the control unit; when the filling temperature of the hydrogen received by the control unit is higher than 85 ℃, the control unit drives the first switch valve 4 to be closed, so that the safety of hydrogen filling is further ensured.
The mass flow meter 23 is arranged at the hydrogen outlet position of the single hydrogen conveying pipeline, and is schematically arranged in front of the temperature transmitter 22 in the figure, so that the hydrogen filling settlement is facilitated, and the accuracy of the hydrogen filling is ensured;
a safety valve 24 is provided on the hydrogen delivery line 1, schematically in front of the mass flow meter 23, to facilitate line overpressure protection;
the emptying pipeline assembly comprises an emptying pipeline 25, a second emptying valve 26, a one-way valve 27 and an emptying hand valve 28, the second emptying valve 26 and the one-way valve 27 are arranged on the emptying pipeline 25, the setting position of the second emptying valve 26 is closer to the hydrogen conveying pipeline 1 than the one-way valve 27, the second emptying valve 26 is preferably a pneumatic emptying valve and is used for emptying the hydrogen conveying pipeline 1 after the hydrogenation of the hydrogenation vehicle is finished, and the one-way valve 27 is used for ensuring the lowest pressure of 6bar in the pipeline after the hydrogen conveying pipeline 1 is emptied, so that air is prevented from entering;
the emptying hand valve 28 is connected in parallel with the emptying pipeline 25 at the two ends of the one-way valve 27 and is used for emptying when the nitrogen in the hydrogen conveying pipeline 1 is replaced.
The following describes the process of hydrogen filling by using the hydrogen conveying system of the invention, as shown in fig. 2:
1) stopping the hydrogen filling vehicle to a filling area, extinguishing the hydrogen filling vehicle, connecting the electrostatic grounding clamp, and judging whether the electrostatic grounding clamp is effectively connected or not by a buzzing alarm, if not, automatically alarming by a buzzer, stopping filling, and if so, executing the step 2);
2) selecting a corresponding filling gun head to be connected with a hydrogen filling port of the hydrogenation vehicle according to the type of the hydrogenation vehicle, judging whether the filling gun head is successfully connected with the hydrogen filling port of the hydrogenation vehicle, if so, executing the step 3), if not, stopping filling, and judging whether the filling gun head is successfully connected with the hydrogen filling port of the hydrogenation vehicle, wherein the concrete measures are as follows: when the corresponding filling gun head is connected with a hydrogen filling port of a hydrogenation vehicle, the filling gun head is pulled back, if the filling gun head is disconnected, the connection is not successful, and if the filling gun head is not disconnected, the connection is successful;
3) manually adopting a portable combustible gas detector to carry out tightness check, if the gas is qualified, executing the step 4), and if the gas is not qualified, stopping filling;
4) starting filling on a man-machine interface of the hydrogenation machine, and sending an instruction to the control unit to enable the control unit to open the second pressure transmitter and the first pressure transmitter and judge whether a difference value between the second pressure transmitter and the first pressure transmitter is larger than a set value;
if so, automatically regulating the speed of hydrogen filling into the hydrogenation car, judging whether a set index is reached (for example, whether the hydrogen filling temperature is lower than 85 ℃) or not, if so, executing the step 5), and if not, again regulating the speed of hydrogen filling;
if not, switching a hydrogen storage tank connected with the inlet of the hydrogen conveying pipeline, changing to a higher-pressure hydrogen storage tank, and performing automatic speed regulation filling of hydrogen, wherein whether the set index is reached (for example, whether the hydrogen filling temperature is lower than 85 ℃) is judged, if so, executing the step 5), and if not, performing automatic speed regulation filling of hydrogen again;
5) and after the filling is stopped, rotating a manual valve of the filling gun head to a disengaging position, moving the filling gun head away, placing the filling gun head on a gun seat, moving the electrostatic grounding clamp away, completing the filling operation, and repeating the operation flow if the filling is needed again.
Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can make modifications and equivalents to the embodiments of the present invention without departing from the spirit and scope of the present invention, which is set forth in the claims of the present application.
Claims (20)
1. A hydrogen conveying system for a hydrogenation vehicle is characterized by comprising a hydrogen conveying pipeline, a hydrogen conveying pressure regulating assembly and a control unit;
the hydrogen conveying pressure adjusting assembly is arranged on the hydrogen conveying pipeline and connected with the control unit, and the hydrogen conveying pressure adjusting assembly adjusts the hydrogen conveying pressure in the hydrogen conveying pipeline behind the hydrogen conveying pressure adjusting assembly according to a pressure curve set in the control unit.
2. The hydrogen gas delivery system for a hydrogen refueling truck as set forth in claim 1, wherein the hydrogen gas delivery pressure regulating assembly includes a pressure regulating valve and a first pressure transmitter;
the pressure regulating valve and the first pressure transmitter are arranged on the hydrogen conveying pipeline, the input end of the first pressure transmitter is used for acquiring the pressure in the vehicle-mounted hydrogen storage bottle, the output end of the first pressure transmitter is connected with the input end of the control unit, and the output end of the control unit is connected with the pressure regulating valve;
the first pressure transmitter is used for measuring the pressure in the hydrogen storage bottle of the hydrogenation vehicle in real time and sending the initial pressure in the hydrogen storage bottle of the hydrogenation vehicle to the control unit, the control unit generates a pressure curve according to the initial pressure in the hydrogen storage bottle of the hydrogenation vehicle and the target pressure to be reached in the hydrogen storage bottle of the hydrogenation vehicle and sends the pressure curve to the pressure regulating valve, and the pressure regulating valve regulates the hydrogen conveying pressure in the conveying pipeline behind the pressure regulating valve according to the pressure curve.
3. The hydrogen gas conveying system for the hydrogenation vehicle as claimed in claim 1, wherein the hydrogen gas conveying pressure regulating assembly further comprises a second pressure transmitter, the second pressure transmitter is arranged on the hydrogen gas conveying pipeline, the second pressure transmitter is used for measuring the pressure in the hydrogen storage bottle of the hydrogenation vehicle in real time, and the output end of the second pressure transmitter is connected with the input end of the control unit;
and when the first pressure transmitter fails, the second pressure transmitter sends the initial pressure in the hydrogen storage bottle of the hydrogenation vehicle to the control unit.
4. The hydrogen gas transport system for a hydrogen refueling truck according to claim 1 or 2, wherein the hydrogen gas transport line employs a single hydrogen gas transport line;
the hydrogen inlet position of single hydrogen pipeline sets up overhauls the subassembly, it includes first manual valve to overhaul the subassembly, and manual valve of second and atmospheric valve, the atmospheric valve is established between first manual valve and the manual valve of second.
5. The hydrogen gas delivery system for a hydrogenation vehicle according to claim 1, further comprising a temperature sensor;
the sensing end of the temperature sensor is used for sensing the ambient temperature, the output end of the temperature sensor is connected with the input end of the control unit, the output end of the temperature sensor sends an ambient temperature value to the input end of the control unit, and the control unit drives the hydrogen conveying pressure adjusting assembly to adjust the hydrogen conveying pressure in the hydrogen conveying pipeline behind the hydrogen conveying pressure adjusting assembly according to the received ambient temperature value sent by the temperature sensor.
6. The hydrogen conveying system for the hydrogenation vehicle as claimed in claim 4, wherein the hydrogen inlet of the hydrogen conveying pipeline is provided with a first switch valve, and the first switch valve is a pneumatic switch valve.
7. The hydrogen gas conveying system for a hydrogenation cart according to claim 4, further comprising a nitrogen gas replacement valve provided at a hydrogen gas inlet position of said single hydrogen gas conveying line.
8. The hydrogen gas delivery system for a hydrogen refueling truck according to claim 1, further comprising a filter provided on the hydrogen gas delivery line.
9. The hydrogen gas delivery system for a hydrogen refueling truck according to claim 3, further comprising a third pressure transmitter provided near a hydrogen gas inlet of the hydrogen gas delivery line for measuring a pressure of the hydrogen gas inlet of the hydrogen gas delivery line.
10. The hydrogen conveying system for the hydrogenation vehicle as claimed in claim 6, wherein the control unit is connected to the first switch valve, the pressure regulating valve feeds back its own real-time pressure increasing rate to the control unit, and when the control unit judges that the pressure increasing rate of the pressure regulating valve continuously exceeds the slope of the pressure curve for 10-15 seconds, the control unit drives the first switch valve to close.
11. The hydrogen gas delivery system for a hydrogenation vehicle according to claim 6, wherein the control unit drives the first on-off valve to close when the pressure in the hydrogen storage cylinder of the hydrogenation vehicle measured by the first pressure transmitter is lower than 0.5MPa or higher than a target pressure to be reached.
12. The hydrogen gas conveying system for a hydrogen refueling truck according to claim 6, further comprising a temperature transmitter provided on the hydrogen gas conveying line;
the sensing end of the temperature transmitter is used for sensing the hydrogen filling temperature, the output end of the temperature transmitter is connected with the input end of the control unit, and the output end of the temperature sensor sends the hydrogen filling temperature to the input end of the control unit;
when the filling temperature of the hydrogen received by the control unit is higher than 85 ℃, the control unit drives the first switch valve to be closed.
13. The hydrogen conveying system for the hydrogenation vehicle as claimed in claim 1, further comprising a hydrogen outlet assembly, wherein the inlet end of the hydrogen outlet assembly is connected with the hydrogen outlet position of the hydrogen conveying pipeline, and the outlet end of the hydrogen outlet assembly is used for being connected with the hydrogen filling port of the hydrogenation vehicle.
14. The hydrogen delivery system for a hydrogenation vehicle of claim 13, wherein the hydrogen gas outlet assembly comprises a first hydrogen gas outlet assembly and a second hydrogen gas outlet assembly.
15. The hydrogen gas delivery system for a hydrogenation vehicle of claim 14, wherein the first hydrogen outlet assembly comprises a first hydrogen outlet conduit, a first snap valve, a first hose, a first filling gun head, and a first gun rest;
the inlet end of the first hydrogen outlet pipeline is connected with the hydrogen outlet of the hydrogen conveying pipeline, and the outlet end of the first hydrogen outlet pipeline is used for being connected with a hydrogen filling port of the hydrogenation vehicle;
the first breaking valve, the first hose and the first filling gun heads are arranged on the first hydrogen outlet pipeline in an arrangement sequence from far to near along the outlet end of the first hydrogen outlet pipeline, and the first gun seat is provided with the first filling gun heads;
the second hydrogen outlet assembly comprises a second hydrogen outlet pipeline, a second breaking valve, a second hose, a second filling gun head and a second gun seat;
the inlet end of the second hydrogen outlet pipeline is connected with the hydrogen outlet of the hydrogen conveying pipeline, and the outlet end of the second hydrogen outlet pipeline is used for being connected with a hydrogen filling port of the hydrogenation vehicle;
the second breaking valve, the second hose and the second filling gun heads are arranged on the second hydrogen outlet pipeline in an arrangement sequence from far to near along the outlet end of the second hydrogen outlet pipeline, and the second gun seat is provided with the second filling gun heads.
16. The hydrogen conveying system for the hydrogenation vehicle as claimed in claim 15, wherein a second switch valve is provided at the inlet end of the first hydrogen outlet pipeline, and the second switch valve is a pneumatic switch valve; and a third switch valve is arranged at the inlet end of the second hydrogen outlet pipeline, and the third switch valve adopts a pneumatic switch valve.
17. The hydrogen gas delivery system for a hydrogenation vehicle according to claim 16, further comprising a first position sensor and a second position sensor;
the sensing end of the first position sensor is arranged at the contact position of the first gun seat and the first filling gun head and is used for sensing the position of the first filling gun head, the output end of the first position sensor is connected with the input end of the control unit, the output end of the control unit is connected with the second switch valve, and when the pressure sensing value received by the control unit from the first position sensor is smaller than a set value, the second switch valve is driven to be opened;
the induction end of the second position sensor is arranged at the contact position of the second gun base and the second filling gun head and used for inducing the position of the second filling gun head, the output end of the second position sensor is connected with the input end of the control unit, the output end of the control unit is connected with the third switch valve, and when the pressure induction value received by the control unit from the second position sensor is smaller than a set value, the third switch valve is driven to be opened.
18. The hydrogen gas delivery system for a hydrogen refueling vehicle as claimed in claim 9, wherein an output of the second pressure transmitter is connected to an input of the control unit, the second pressure transmitter transmitting the measured pressure of the hydrogen gas inlet of the hydrogen gas delivery line to the control unit;
before filling hydrogen into the hydrogenation car, the control unit compares the pressure of the hydrogen inlet of the hydrogen conveying pipeline with the initial pressure in the hydrogen storage bottle of the hydrogenation car, if the difference value between the pressure and the initial pressure is smaller than a set value, the hydrogen storage tank connected with the inlet of the hydrogen conveying pipeline is replaced, and if the difference value between the pressure and the initial pressure is larger than the set value, the hydrogen is filled into the hydrogenation car.
19. The hydrogen gas delivery system for a hydrogen refueling vehicle as recited in claim 1, further comprising a safety valve provided on the hydrogen gas delivery line.
20. The hydrogen gas conveying system for a hydrogenation cart according to claim 1, further comprising a mass flow meter provided at a hydrogen gas outlet position of said hydrogen gas conveying line.
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| CN202010167920.8A CN113390017A (en) | 2020-03-11 | 2020-03-11 | Hydrogen conveying system for hydrogenation vehicle |
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| CN202010167920.8A CN113390017A (en) | 2020-03-11 | 2020-03-11 | Hydrogen conveying system for hydrogenation vehicle |
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| CN113390017A true CN113390017A (en) | 2021-09-14 |
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| CN202010167920.8A Pending CN113390017A (en) | 2020-03-11 | 2020-03-11 | Hydrogen conveying system for hydrogenation vehicle |
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| 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 |
| CN115164095A (en) * | 2022-08-09 | 2022-10-11 | 浙江浙能航天氢能技术有限公司 | Automatic gun-selecting hydrogenation machine and gun-selecting system thereof |
| CN115234830A (en) * | 2022-06-29 | 2022-10-25 | 潍柴动力股份有限公司 | A kind of hydrogenation method and hydrogenation station |
| CN116719355A (en) * | 2023-02-27 | 2023-09-08 | 国家电投集团科学技术研究院有限公司 | Control device and control method of casing hydrogen transmission system |
| CN117212680A (en) * | 2023-10-16 | 2023-12-12 | 北京亿华通科技股份有限公司 | Vehicle hydrogenation method and device, electronic equipment and storage medium |
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