CN112984370A - Sequence disc system for hydrogenation station and use method thereof - Google Patents
Sequence disc system for hydrogenation station and use method thereof Download PDFInfo
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- CN112984370A CN112984370A CN202110179795.7A CN202110179795A CN112984370A CN 112984370 A CN112984370 A CN 112984370A CN 202110179795 A CN202110179795 A CN 202110179795A CN 112984370 A CN112984370 A CN 112984370A
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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
- F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
- F17C5/06—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with compressed gases
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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
- 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
- F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
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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
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0107—Single phase
- F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
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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
- F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
- F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
- F17C2225/0107—Single phase
- F17C2225/0123—Single phase gaseous, e.g. CNG, GNC
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/45—Hydrogen technologies in production processes
Abstract
The invention discloses a sequence disk system for a hydrogenation station, which comprises a high-pressure hydrogen storage cylinder group, a medium-pressure hydrogen storage cylinder group, a low-pressure hydrogen storage cylinder group, a main air inlet pipeline, a first branch pipeline, a second branch pipeline and a third branch pipeline, wherein the first branch pipeline, the second branch pipeline and the third branch pipeline are respectively communicated with the main air inlet pipeline; still include the control unit, the control unit electricity is connected medium pressure control valve, low pressure control valve respectively, still connects first pressure transmitter, second pressure transmitter, third pressure transmitter and hydrogenation machine pressure transmitter respectively, through the setting of control valve and pressure transmitter, can improve hydrogenation efficiency, avoids the use of back pressure valve.
Description
Technical Field
The invention relates to the technical field of equipment for a hydrogenation station, in particular to a sequence disk system for the hydrogenation station and a using method thereof.
Background
The hydrogen station refers to a place where hydrogen is supplied as fuel to a hydrogenated automobile. The prior sequence control panel generally adopts a back pressure valve form, namely back pressure valves are respectively arranged on the air inlet pipelines of the high, medium and low pressure hydrogen storage bottles, and different back pressure valves are respectively provided with different pressures so as to lead the gas to pass; the pressure set corresponding to the back pressure valve of the high-pressure hydrogen storage bottle is minimum, the medium-pressure hydrogen storage bottle is next highest, when the gas is inflated, the gas in the gas inlet pipeline simultaneously enters the three back pressure valves, the pressure set corresponding to the back pressure valve of the high-pressure hydrogen storage bottle is minimum, the medium-pressure hydrogen storage bottle is firstly opened, at the moment, the gas preferentially enters the high-pressure hydrogen bottle, along with the continuous entering of the gas, the pressure in the high-pressure hydrogen storage bottle also gradually rises, after a period of time, the pressure of the gas is increased to the pressure set corresponding to the back pressure valve of the medium-pressure hydrogen storage bottle, at the moment, the back pressure valve is opened, so that the gas can enter the medium-pressure hydrogen storage bottle, after a period of time, the pressure of the gas is increased to the pressure set corresponding to the back pressure valve of the low-pressure hydrogen storage bottle.
Still be equipped with a plurality of hydrogenation machine in the hydrogenation station, every hydrogenation machine all communicates high, middle, low pressure hydrogen storage bottle through the pipeline, and when needs hydrogenate, the hydrogenation car is connected to the hydrogenation machine, carries out the gas filling.
When the sequence control panel is used for loading hydrogen into the hydrogen storage bottle and adding hydrogen into the hydrogenation vehicle through the hydrogen storage bottle, the following defects are overcome:
1. when the back pressure valve is used for operation, the high, medium and low hydrogen storage devices are equivalently filled by the mechanical valve. After long-term use, the control of the pressure by the backpressure valve is unstable, so that once the mechanical control mode fails, the function of preferential charging also loses significance; and the hydrogen high pressure back pressure valve is very expensive to manufacture; the cost of maintenance is also high.
2. If the number of the hydrogenation stations is 2 or more, the pressure value of each hydrogenation vehicle of the hydrogenation machine cannot be monitored, and the preferential hydrogenation control cannot be realized.
Therefore, how to provide a sequence tray system for a hydrogen refueling station, which can avoid the above disadvantages, becomes a technical problem to be solved urgently by those skilled in the art.
Disclosure of Invention
To achieve the above object, the present invention provides a sequence tray system for a hydrogen refueling station.
A sequence disk system for a hydrogen station comprises a high-pressure hydrogen storage cylinder group, a medium-pressure hydrogen storage cylinder group, a low-pressure hydrogen storage cylinder group, a main air inlet pipeline, a first branch pipeline, a second branch pipeline and a third branch pipeline, wherein the first branch pipeline, the second branch pipeline and the third branch pipeline are respectively communicated with the main air inlet pipeline, the main air inlet pipeline is communicated with the high-pressure hydrogen storage cylinder group through the first branch pipeline, is communicated with the medium-pressure hydrogen storage cylinder group through the second branch pipeline and is communicated with the low-pressure hydrogen storage cylinder group through the third branch pipeline, one-way valves are respectively arranged on the first branch pipeline, the second branch pipeline and the third branch pipeline, a medium-pressure control valve is arranged on the second branch pipeline, a low-pressure control valve is arranged on the third branch pipeline, a first pressure transmitter for monitoring the hydrogen pressure of the high-pressure hydrogen storage cylinder group is arranged on the high-pressure hydrogen storage cylinder group, a second pressure transmitter, the low-pressure hydrogen storage cylinder group is provided with a third pressure transmitter for monitoring the hydrogen pressure of the low-pressure hydrogen storage cylinder group, and the low-pressure hydrogen storage cylinder group also comprises at least one hydrogenation machine, wherein the hydrogenation machine is communicated with the high-pressure hydrogen storage cylinder group through a first hydrogenation pipeline, the medium-pressure hydrogen storage cylinder group through a second hydrogenation pipeline, and the low-pressure hydrogen storage cylinder group through a third hydrogenation pipeline;
the control unit is respectively and electrically connected with the medium pressure control valve, the low pressure control valve, the first hydrogenation control valve, the second hydrogenation control valve and the third hydrogenation control valve, can control the opening or closing of the corresponding control valves, is also respectively and electrically connected with the first pressure transmitter, the second pressure transmitter, the third pressure transmitter and the hydrogenation machine pressure transmitter, can receive the pressure monitored by the corresponding pressure transmitters, stores a first pressure set value, a second pressure set value and a third pressure set value, and further comprises a pressure comparison module;
when hydrogen is supplied to the high-pressure hydrogen storage cylinder group, the medium-pressure hydrogen storage cylinder group and the low-pressure hydrogen storage cylinder group in sequence: the main air inlet pipeline supplies hydrogen to the high-pressure hydrogen storage cylinder group through the first branch pipeline, the control unit receives the pressure monitored by the first pressure transmitter, the pressure comparison module compares the pressure with the pressure, if the pressure reaches the first pressure set value, the control unit controls the medium-pressure control valve to be opened, the main air inlet pipeline supplies hydrogen to the medium-pressure hydrogen storage cylinder group through the second branch pipeline, the control unit receives the pressure monitored by the second pressure transmitter, the pressure comparison module compares the pressure with the pressure, if the pressure reaches the second pressure set value, the control unit controls the low-pressure control valve to be opened, and the main air inlet pipeline supplies hydrogen to the low-pressure hydrogen storage cylinder group through the third branch pipeline; when hydrogenation is carried out on the hydrogenation vehicle: the control unit respectively receives the pressures monitored by the first pressure transmitter, the second pressure transmitter, the third pressure transmitter and the hydrogenation machine pressure transmitter, the pressure comparison module compares the pressures, if the pressure of the hydrogenation machine pressure transmitter is lower than the pressure of the third pressure transmitter, the control unit controls the third hydrogenation control valve to open, if the pressure of the hydrogenation machine pressure transmitter is balanced or higher than the pressure of the third pressure transmitter and lower than the pressure of the second pressure transmitter, the control unit controls the second hydrogenation control valve to open, and if the pressure of the hydrogenation machine pressure transmitter is balanced or higher than the pressure of the second pressure transmitter and lower than the pressure of the first pressure transmitter, the control unit controls the first hydrogenation control valve to open.
Preferably, the medium pressure control valve, the low pressure control valve, the first hydrogenation control valve, the second hydrogenation control valve and the third hydrogenation control valve are all electromagnetic pneumatic control valves, each electromagnetic pneumatic control valve comprises an electromagnetic valve and a pneumatic control valve, the control unit is electrically connected with the electromagnetic valve and can supply power to control the opening of the electromagnetic valve, the hydrogen adding device further comprises an air source for supplying air, and the air supply of the air source enters the pneumatic control valve actuator of the pneumatic control valve through the opened electromagnetic valve to control the opening of the pneumatic control valve.
Preferably, the first hydrogenation pipeline is communicated with the first branch pipeline, the second hydrogenation pipeline is communicated with the second branch pipeline, and the third hydrogenation pipeline is communicated with the third branch pipeline.
Preferably, the number of the hydrotreaters is two.
Preferably, the first branch line, the second branch line and the third branch line are all connected to a discharge line.
The sequence disk system for the hydrogenation station provided by the invention has the following technical effects:
when the system is used, a main gas inlet pipeline supplies hydrogen to a high-pressure hydrogen storage cylinder group through a first branch pipeline, a control unit receives the pressure monitored by a first pressure transmitter, the pressure comparison module compares the pressure with the pressure, if the pressure reaches a first pressure set value, the control unit controls the medium-pressure control valve to open, the main gas inlet pipeline supplies hydrogen to the medium-pressure hydrogen storage cylinder group through a second branch pipeline, the control unit receives the pressure monitored by a second pressure transmitter, the pressure comparison module compares the pressure with the pressure, if the pressure reaches a second pressure set value, the control unit controls the low-pressure control valve to open, and the main gas inlet pipeline supplies hydrogen to the low-pressure hydrogen storage cylinder group through a third branch pipeline; the system completely abandons the use of a back pressure valve, adopts a brand-new automatic sequential hydrogen supply mode, has more accurate control during hydrogen supply, and uses common parts which are easy to obtain and have low cost.
When hydrogen is added to the hydrogenation vehicle: the control unit respectively receives the pressures monitored by the first pressure transmitter, the second pressure transmitter, the third pressure transmitter and the hydrogenation machine pressure transmitter, the pressures are compared by the pressure comparison module, if the pressure of the hydrogenation machine pressure transmitter is lower than the pressure of the third pressure transmitter, the control unit controls the third hydrogenation control valve to be opened, if the pressure of the hydrogenation machine pressure transmitter is balanced or higher than the pressure of the third pressure transmitter and lower than the pressure of the second pressure transmitter, the control unit controls the second hydrogenation control valve to be opened, and if the pressure of the hydrogenation machine pressure transmitter is balanced or higher than the pressure of the second pressure transmitter and lower than the pressure of the first pressure transmitter, the control unit controls the first hydrogenation control valve to be opened; hydrogenation can be realized at the first time by arranging the pressure transmitter and comparing, so that the efficiency is improved; in addition, the arrangement of the one-way valves on the pipelines can ensure that the gas flows according to a preset sequence.
Preferably, the control valves are all common electromagnetic pneumatic control valves, so that the cost is low and the maintenance is convenient.
Preferably, the hydrogenation pipeline is communicated with the branch pipeline, and hydrogen can be directly supplied to the hydrogenation machine through the main gas inlet pipeline under specific conditions, so that the synchronous hydrogenation with the hydrogen storage bottle is realized.
Preferably, a drain line is provided to facilitate venting during maintenance.
The invention also provides a use method of the sequence disk system for the hydrogen refueling station, which comprises the following steps:
the steps of supplying hydrogen to the high-pressure hydrogen storage cylinder group, the medium-pressure hydrogen storage cylinder group and the low-pressure hydrogen storage cylinder group in sequence are as follows:
firstly, supplying hydrogen to the high-pressure hydrogen storage cylinder group, monitoring the pressure of hydrogen in the high-pressure hydrogen storage cylinder group in the hydrogen supply process, opening a control valve positioned at the upstream of the medium-pressure hydrogen storage cylinder group when the pressure of hydrogen reaches a first set value, supplying hydrogen to the medium-pressure hydrogen storage cylinder group, monitoring the pressure in the medium-pressure hydrogen storage cylinder group in real time, and opening a control valve positioned at the upstream of the low-pressure hydrogen storage cylinder group when the pressure of hydrogen reaches a second set value, and supplying hydrogen to the low-pressure hydrogen storage cylinder group;
the steps of hydrogenation to the hydrogenation car are as follows:
the hydrogenation vehicle is communicated with a hydrogenation machine, the hydrogen pressure of the initial state of the hydrogenation vehicle is monitored, the pressure is respectively compared with the pressure of hydrogen in the high-pressure hydrogen storage cylinder group, the medium-pressure hydrogen storage cylinder group and the low-pressure hydrogen storage cylinder group, if the pressure is lower than the pressure in the low-pressure hydrogen storage cylinder group, the low-pressure hydrogen storage cylinder group is opened for hydrogenation, if the pressure is balanced or higher than the pressure in the low-pressure hydrogen storage cylinder group and is lower than the pressure in the medium-pressure hydrogen storage cylinder group, the medium-pressure hydrogen storage cylinder group is opened for hydrogenation, and if the pressure is balanced or higher than the pressure in the medium-pressure hydrogen storage cylinder group and is lower than the pressure in the high-pressure hydrogen storage cylinder group, the high-pressure hydrogen storage cylinder group is opened for hydrogenation.
Preferably, the sequence control panel for a hydrogen refueling station described above is used.
The method has the same technical effects.
Drawings
FIG. 1 is a schematic diagram of an embodiment of a sequence tray system for a hydrogen station according to the present invention, wherein arrows indicate the flow direction of gases.
The reference numerals in fig. 1 are as follows:
1 high-pressure hydrogen storage cylinder group, 2 medium-pressure hydrogen storage cylinder group, 3 low-pressure hydrogen storage cylinder group, 4 main air inlet pipelines, 5 first branch pipelines, 6 second branch pipelines, 7 third branch pipelines, 8 one-way valves, 9 medium-pressure control valves, 10 low-pressure control valves, 11 first pressure transmitters, 12 second pressure transmitters, 13 third pressure transmitters, 14 hydrogenation machines, 15 first hydrogenation pipelines, 16 second hydrogenation pipelines, 17 third hydrogenation pipelines, 18 first hydrogenation control valves, 19 second hydrogenation control valves, 20 third hydrogenation control valves, 21 hydrogenation machine pressure transmitters, 22 control units, 23 hydrogenation vehicles, 24 gas source pipelines and 25 discharge pipelines.
Detailed Description
Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of a sequence tray system for a hydrogen refueling station according to the present invention, wherein arrows indicate the flowing direction of gas.
The invention provides a sequence disk system for a hydrogenation station, which is combined with a figure 1 and comprises a high-pressure hydrogen storage cylinder group 1, a medium-pressure hydrogen storage cylinder group 2, a low-pressure hydrogen storage cylinder group 3, a main air inlet pipeline 4, a first branch pipeline 5, a second branch pipeline 6 and a third branch pipeline 7, wherein the first branch pipeline 5, the second branch pipeline 6 and the third branch pipeline 7 are respectively communicated with the main air inlet pipeline 4, the main air inlet pipeline 4 is communicated with the high-pressure hydrogen storage cylinder group 1 through the first branch pipeline 5, the medium-pressure hydrogen storage cylinder group 2 through the second branch pipeline 6 and the low-pressure hydrogen storage cylinder group 3 through the third branch pipeline 7, the first branch pipeline 5, the second branch pipeline 6 and the third branch pipeline 7 are respectively provided with a one-way valve 8, the second branch pipeline 6 is provided with a medium-pressure control valve 9, the third branch pipeline 7 is provided with a low-pressure control valve 10, a transmitter 11 for monitoring the hydrogen pressure of the high-pressure, the medium-pressure hydrogen storage cylinder group 2 is provided with a second pressure transmitter 12 for monitoring the hydrogen pressure, the low-pressure hydrogen storage cylinder group 3 is provided with a third pressure transmitter 13 for monitoring the hydrogen pressure, and also comprises at least one hydrogenation machine 14, the hydrogenation machine 14 is communicated with the high-pressure hydrogen storage cylinder group 1 through a first hydrogenation pipeline 15, communicated with the medium-pressure hydrogen storage cylinder group 2 through a second hydrogenation pipeline 16, and communicated with the low-pressure hydrogen storage cylinder group 3 through a third hydrogenation pipeline 17, the first hydrogenation pipeline 15, the second hydrogenation pipeline 16 and the third hydrogenation pipeline 17 are all provided with one-way valves 8, a first hydrogenation control valve 18 is arranged on the first hydrogenation pipeline 15, a second hydrogenation control valve 19 is arranged on the second hydrogenation pipeline 16, a third hydrogenation control valve 20 is arranged on the third hydrogenation pipeline 17, and a hydrogenation machine pressure transmitter 21 for monitoring the hydrogen pressure in a hydrogenation car 23 communicated with the hydrogenation machine 14 is arranged on the hydrogenation machine 14;
the control unit 22 is electrically connected to the intermediate pressure control valve 9, the low pressure control valve 10, the first hydrogenation control valve 18, the second hydrogenation control valve 19 and the third hydrogenation control valve 20 respectively and can control the corresponding control valves to open or close, the control unit 22 is also electrically connected to the first pressure transmitter 11, the second pressure transmitter 12, the third pressure transmitter 13 and the hydrogenation machine pressure transmitter 21 respectively and can receive the pressure monitored by the corresponding pressure transmitters, a first pressure set value, a second pressure set value and a third pressure set value are stored in the control unit 22, and a pressure comparison module is further included in the control unit 22;
when hydrogen is supplied to the high-pressure hydrogen storage cylinder group 1, the medium-pressure hydrogen storage cylinder group 2 and the low-pressure hydrogen storage cylinder group 3 in sequence: the primary air inlet pipeline 4 supplies hydrogen to the high-pressure hydrogen storage cylinder group 1 through the first branch pipeline 5, the control unit 22 receives the pressure monitored by the first pressure transmitter 11, the pressure comparison module compares the pressure with the pressure, if the pressure reaches the first pressure set value, the control unit 22 controls the medium pressure control valve 9 to be opened, the primary air inlet pipeline 4 supplies hydrogen to the medium-pressure hydrogen storage cylinder group 2 through the second branch pipeline 6, the control unit 22 receives the pressure monitored by the second pressure transmitter 12, the pressure comparison module compares the pressure with the pressure, if the pressure reaches the second pressure set value, the control unit 22 controls the low pressure control valve 10 to be opened, and the primary air inlet pipeline 4 supplies hydrogen to the low-pressure hydrogen storage cylinder group 3 through the third branch pipeline 7; when hydrogenation is performed on the hydrogenation car 23: control unit 22 receives respectively first pressure transmitter 11 second pressure transmitter 12 third pressure transmitter 13 with the pressure that hydrogenation machine pressure transmitter 21 monitored, the warp the pressure comparison module compares, if hydrogenation machine pressure transmitter 21's pressure is less than third pressure transmitter 13's pressure, control unit 22 control third hydrogenation control valve 20 opens, if hydrogenation machine pressure transmitter 21's pressure balance in or be higher than third pressure transmitter 13's pressure and be less than second pressure transmitter 12's pressure, control unit 22 control second hydrogenation control valve 19 opens, if hydrogenation machine pressure transmitter 21's pressure balance in or be higher than second pressure transmitter 12's pressure and be less than first pressure transmitter 11's pressure, control unit 22 control first hydrogenation control valve 18 opens.
When the system is used, the main air inlet pipeline 4 supplies hydrogen to the high-pressure hydrogen storage cylinder group 1 through the first branch pipeline 5, the control unit 22 receives the pressure monitored by the first pressure transmitter 11, the pressure comparison module compares the pressure, if the pressure reaches the first pressure set value, the control unit 22 controls the medium pressure control valve 9 to be opened, the main air inlet pipeline 4 supplies hydrogen to the medium-pressure hydrogen storage cylinder group 2 through the second branch pipeline 6, the control unit 22 receives the pressure monitored by the second pressure transmitter 12, the pressure comparison module compares the pressure, if the pressure reaches the second pressure set value, the control unit 22 controls the low pressure control valve 10 to be opened, and the main air inlet pipeline 4 supplies hydrogen to the low-pressure hydrogen storage cylinder group 3 through the third branch pipeline 7; the system completely abandons the use of a back pressure valve, adopts a brand-new automatic sequential hydrogen supply mode, has more accurate control during hydrogen supply, and uses common parts which are easy to obtain and have low cost.
When hydrogen is added to the hydrogenation car 23: the control unit 22 receives the pressures monitored by the first pressure transmitter 11, the second pressure transmitter 12, the third pressure transmitter 13 and the hydrogenation machine pressure transmitter 21, and compares the pressures through the pressure comparison module, if the pressure of the hydrogenation machine pressure transmitter 21 is lower than the pressure of the third pressure transmitter 13, the control unit 22 controls the third hydrogenation control valve 20 to open, if the pressure of the hydrogenation machine pressure transmitter 21 is balanced with or higher than the pressure of the third pressure transmitter 13 and lower than the pressure of the second pressure transmitter 12, the control unit 22 controls the second hydrogenation control valve 19 to open, and if the pressure of the hydrogenation machine pressure transmitter 21 is balanced with or higher than the pressure of the second pressure transmitter 12 and lower than the pressure of the first pressure transmitter 11, the control unit 22 controls the first hydrogenation control valve 18 to open; hydrogenation can be realized at the first time by arranging the pressure transmitter and comparing, so that the efficiency is improved; in addition, the arrangement of the one-way valves 8 on each pipeline can ensure that the gas flows according to a preset sequence. In addition, when a plurality of hydrogenation machines 14 are arranged, the hydrogen pressure of the hydrogenation vehicles connected with the hydrogenation machines can be monitored through the corresponding hydrogenation machine pressure transmitters on the hydrogenation machines, so that the hydrogenation vehicle which is hydrogenated first or the vehicle which is to be filled can be controlled to carry out preferential hydrogenation, and the principle that the vehicle which comes first and runs first is realized as far as possible.
As a schematic view, it can be understood that the first hydrogenation pipeline 15 is communicated with the outlet end of the high-pressure hydrogen storage cylinder group 1, the first branch pipeline 5 is communicated with the inlet end of the high-pressure hydrogen storage cylinder group 1, the second hydrogenation pipeline 16 is communicated with the outlet end of the medium-pressure hydrogen storage cylinder group 2, the second branch pipeline 6 is communicated with the inlet end of the medium-pressure hydrogen storage cylinder group 2, the third hydrogenation pipeline 17 is communicated with the outlet end of the low-pressure hydrogen storage cylinder group 3, and the third branch pipeline 7 is communicated with the inlet end of the low-pressure hydrogen storage cylinder group 3.
In a specific embodiment, the medium pressure control valve 9, the low pressure control valve 10, the first hydrogenation control valve 18, the second hydrogenation control valve 19 and the third hydrogenation control valve 20 are electromagnetic pneumatic control valves, each electromagnetic pneumatic control valve comprises an electromagnetic valve and a pneumatic control valve, the control unit 22 is electrically connected with the electromagnetic valve, the electromagnetic valve can be powered and controlled to be opened, the pneumatic control valve further comprises a gas source for supplying gas, the gas supply of the gas source enters the opened electromagnetic valve through a gas source pipeline 24, and an actuator of the pneumatic control valve can control the opening of the pneumatic control valve.
The control valves are all commonly used electromagnetic pneumatic control valves, so that the cost is low and the maintenance is convenient. Of course, other types of control valves may be used.
Further, a first hydrogenation pipeline 15 is communicated with the first branch pipeline 5, a second hydrogenation pipeline 16 is communicated with the second branch pipeline 6, and a third hydrogenation pipeline 17 is communicated with the third branch pipeline 7.
The hydrogenation pipeline is communicated with the branch pipeline, and can directly supply hydrogen to the hydrogenation machine 14 through the main air inlet pipeline 4 under specific conditions, so that the synchronous hydrogenation with the hydrogen storage bottle is realized.
As shown in fig. 1, the number of the hydrotreaters 14 in this embodiment is two. Of course, the number is not limited thereto, and may be one or more.
In addition, the first branch line 5, the second branch line 6 and the third branch line 7 are all connected to a discharge line 25.
A vent line 25 is provided to facilitate venting during maintenance.
The invention also provides a use method of the sequence disk system for the hydrogen refueling station, which comprises the following steps:
the steps of supplying hydrogen to the high-pressure hydrogen storage cylinder group 1, the medium-pressure hydrogen storage cylinder group 2 and the low-pressure hydrogen storage cylinder group 3 in sequence are as follows:
referring to fig. 1, firstly supplying hydrogen to the high-pressure hydrogen storage cylinder group 1, during the hydrogen supply process, monitoring the hydrogen pressure in the high-pressure hydrogen storage cylinder group 1, when the hydrogen pressure reaches a first set value, opening a control valve located at the upstream of the medium-pressure hydrogen storage cylinder group 2, supplying hydrogen to the medium-pressure hydrogen storage cylinder group 2, monitoring the pressure in the medium-pressure hydrogen storage cylinder group 2 in real time, and when the hydrogen pressure reaches a second set value, opening a control valve located at the upstream of the low-pressure hydrogen storage cylinder group 3, and supplying hydrogen to the low-pressure hydrogen storage cylinder group 3;
the steps of hydrogenation to the hydrogenation car are as follows:
the hydrogenation vehicle 23 is communicated to the hydrogenation machine 14, the hydrogen pressure of the initial state of the hydrogenation vehicle 23 is monitored, the pressure is compared with the pressure of the hydrogen in the high-pressure hydrogen storage cylinder group 1, the medium-pressure hydrogen storage cylinder group 2 and the low-pressure hydrogen storage cylinder group 3 respectively, if the pressure is lower than the pressure in the low-pressure hydrogen storage cylinder group 3, the low-pressure hydrogen storage cylinder group 3 is opened for hydrogenation, if the pressure is balanced or higher than the pressure in the low-pressure hydrogen storage cylinder group 3 and is lower than the pressure in the medium-pressure hydrogen storage cylinder group 2, the medium-pressure hydrogen storage cylinder group 2 is opened for hydrogenation, and if the pressure is balanced or higher than the pressure in the medium-pressure hydrogen storage cylinder group 2 and is lower than the pressure in the high-pressure hydrogen storage cylinder group 1, the high-pressure hydrogen storage cylinder group 1 is opened for hydrogenation.
Further, the sequence control board for the hydrogen refueling station described above can be used, and the specific process is described above. Therefore, the method has the same technical effects as the above.
Claims (7)
1. A sequence disk system for a hydrogenation station is characterized by comprising a high-pressure hydrogen storage cylinder group, a medium-pressure hydrogen storage cylinder group, a low-pressure hydrogen storage cylinder group, a main air inlet pipeline, a first branch pipeline, a second branch pipeline and a third branch pipeline, wherein the first branch pipeline, the second branch pipeline and the third branch pipeline are respectively communicated with the main air inlet pipeline, the main air inlet pipeline is communicated with the high-pressure hydrogen storage cylinder group through the first branch pipeline, is communicated with the medium-pressure hydrogen storage cylinder group through the second branch pipeline and is communicated with the low-pressure hydrogen storage cylinder group through the third branch pipeline, one-way valves are respectively arranged on the first branch pipeline, the second branch pipeline and the third branch pipeline, a medium-pressure control valve is arranged on the second branch pipeline, a low-pressure control valve is arranged on the third branch pipeline, a first pressure transmitter for monitoring the hydrogen pressure of the high-pressure hydrogen storage cylinder group is arranged on the high-pressure hydrogen storage cylinder group, a second pressure transmitter for, the low-pressure hydrogen storage cylinder group is provided with a third pressure transmitter for monitoring the hydrogen pressure of the low-pressure hydrogen storage cylinder group, and the low-pressure hydrogen storage cylinder group also comprises at least one hydrogenation machine, wherein the hydrogenation machine is communicated with the high-pressure hydrogen storage cylinder group through a first hydrogenation pipeline, the medium-pressure hydrogen storage cylinder group through a second hydrogenation pipeline, and the low-pressure hydrogen storage cylinder group through a third hydrogenation pipeline;
the control unit is respectively and electrically connected with the medium pressure control valve, the low pressure control valve, the first hydrogenation control valve, the second hydrogenation control valve and the third hydrogenation control valve, can control the opening or closing of the corresponding control valves, is also respectively and electrically connected with the first pressure transmitter, the second pressure transmitter, the third pressure transmitter and the hydrogenation machine pressure transmitter, can receive the pressure monitored by the corresponding pressure transmitters, stores a first pressure set value, a second pressure set value and a third pressure set value, and further comprises a pressure comparison module;
when hydrogen is supplied to the high-pressure hydrogen storage cylinder group, the medium-pressure hydrogen storage cylinder group and the low-pressure hydrogen storage cylinder group in sequence: the main air inlet pipeline supplies hydrogen to the high-pressure hydrogen storage cylinder group through the first branch pipeline, the control unit receives the pressure monitored by the first pressure transmitter, the pressure comparison module compares the pressure with the pressure, if the pressure reaches the first pressure set value, the control unit controls the medium-pressure control valve to be opened, the main air inlet pipeline supplies hydrogen to the medium-pressure hydrogen storage cylinder group through the second branch pipeline, the control unit receives the pressure monitored by the second pressure transmitter, the pressure comparison module compares the pressure with the pressure, if the pressure reaches the second pressure set value, the control unit controls the low-pressure control valve to be opened, and the main air inlet pipeline supplies hydrogen to the low-pressure hydrogen storage cylinder group through the third branch pipeline; when hydrogenation is carried out on the hydrogenation vehicle: the control unit respectively receives the pressures monitored by the first pressure transmitter, the second pressure transmitter, the third pressure transmitter and the hydrogenation machine pressure transmitter, the pressure comparison module compares the pressures, if the pressure of the hydrogenation machine pressure transmitter is lower than the pressure of the third pressure transmitter, the control unit controls the third hydrogenation control valve to open, if the pressure of the hydrogenation machine pressure transmitter is balanced or higher than the pressure of the third pressure transmitter and lower than the pressure of the second pressure transmitter, the control unit controls the second hydrogenation control valve to open, and if the pressure of the hydrogenation machine pressure transmitter is balanced or higher than the pressure of the second pressure transmitter and lower than the pressure of the first pressure transmitter, the control unit controls the first hydrogenation control valve to open.
2. The sequence disk system for the hydrogenation station according to claim 1, wherein the intermediate pressure control valve, the low pressure control valve, the first hydrogenation control valve, the second hydrogenation control valve and the third hydrogenation control valve are all electromagnetic pneumatic control valves, each electromagnetic pneumatic control valve comprises an electromagnetic valve and a pneumatic control valve, the control unit is electrically connected with the electromagnetic valve and can supply power to control the opening of the electromagnetic valve, the sequence disk system further comprises an air supply for supplying air, and the air supply for the air supply enters the pneumatic control valve actuator of the pneumatic control valve through the opened electromagnetic valve and can control the opening of the pneumatic control valve.
3. The sequencing tray system of claim 2, wherein the first hydrogenation line is in communication with the first branch line, the second hydrogenation line is in communication with the second branch line, and the third hydrogenation line is in communication with the third branch line.
4. The sequencing tray system for a hydroprocessing station of claim 3, wherein the number of hydroprocessors is two.
5. The sequencing tray system of claim 1, wherein the first branch line, the second branch line, and the third branch line are each connected to a drain line.
6. A use method of a sequence tray system for a hydrogen refueling station is characterized by comprising the following steps:
the steps of supplying hydrogen to the high-pressure hydrogen storage cylinder group, the medium-pressure hydrogen storage cylinder group and the low-pressure hydrogen storage cylinder group in sequence are as follows:
firstly, supplying hydrogen to the high-pressure hydrogen storage cylinder group, monitoring the pressure of hydrogen in the high-pressure hydrogen storage cylinder group in the hydrogen supply process, opening a control valve positioned at the upstream of the medium-pressure hydrogen storage cylinder group when the pressure of hydrogen reaches a first set value, supplying hydrogen to the medium-pressure hydrogen storage cylinder group, monitoring the pressure in the medium-pressure hydrogen storage cylinder group in real time, and opening a control valve positioned at the upstream of the low-pressure hydrogen storage cylinder group when the pressure of hydrogen reaches a second set value, and supplying hydrogen to the low-pressure hydrogen storage cylinder group;
the steps of hydrogenation to the hydrogenation car are as follows:
the hydrogenation vehicle is communicated with a hydrogenation machine, the hydrogen pressure of the initial state of the hydrogenation vehicle is monitored, the pressure is respectively compared with the pressure of hydrogen in the high-pressure hydrogen storage cylinder group, the medium-pressure hydrogen storage cylinder group and the low-pressure hydrogen storage cylinder group, if the pressure is lower than the pressure in the low-pressure hydrogen storage cylinder group, the low-pressure hydrogen storage cylinder group is opened for hydrogenation, if the pressure is balanced or higher than the pressure in the low-pressure hydrogen storage cylinder group and lower than the pressure in the medium-pressure hydrogen storage cylinder group, the medium-pressure hydrogen storage cylinder group is opened for hydrogenation, and if the pressure is balanced or higher than the pressure in the medium-pressure hydrogen storage cylinder group and lower than the pressure in the high-pressure hydrogen storage cylinder group, the high-pressure hydrogen storage cylinder group is opened for hydrogenation.
7. The method of using a sequence tray system for a hydrogen refueling station according to claim 6, wherein the sequence tray system for a hydrogen refueling station is the sequence tray system for a hydrogen refueling station according to any one of claims 1 to 5.
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| CN113653937A (en) * | 2021-07-23 | 2021-11-16 | 上海氢枫能源技术有限公司 | Efficient hydrogenation method of comprehensive hydrogenation station |
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