CN213118453U - Hydrogenation sequence optimization control system for hydrogenation station - Google Patents
Hydrogenation sequence optimization control system for hydrogenation station Download PDFInfo
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- CN213118453U CN213118453U CN202021082684.1U CN202021082684U CN213118453U CN 213118453 U CN213118453 U CN 213118453U CN 202021082684 U CN202021082684 U CN 202021082684U CN 213118453 U CN213118453 U CN 213118453U
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- 238000005984 hydrogenation reaction Methods 0.000 title claims abstract description 197
- 238000005457 optimization Methods 0.000 title claims abstract description 8
- 239000001257 hydrogen Substances 0.000 claims abstract description 407
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 407
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 393
- 238000003860 storage Methods 0.000 claims abstract description 204
- 239000000446 fuel Substances 0.000 claims abstract description 45
- 239000007789 gas Substances 0.000 claims description 22
- 150000002431 hydrogen Chemical class 0.000 claims description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 9
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 238000010926 purge Methods 0.000 claims description 3
- 229910001873 dinitrogen Inorganic materials 0.000 description 3
- 238000003915 air pollution Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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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Abstract
The utility model provides a hydrogenation sequence optimization control system for a hydrogenation station, which comprises a direct-charging hydrogenation branch, a high-pressure hydrogenation branch, a medium-pressure hydrogenation branch and a low-pressure hydrogenation branch which are arranged in parallel; each hydrogenation branch comprises a hydrogenation pipeline, a control valve combination and a pressure transmitter which are arranged on the hydrogenation pipeline in series. When a hydrogen fuel cell automobile needs hydrogenation, a hydrogen compressor is not started at first, and the hydrogen is sequentially hydrogenated for the fuel cell automobile by the low-pressure hydrogen storage cylinder group, the medium-pressure hydrogen storage cylinder group and the high-pressure hydrogen storage cylinder group respectively by controlling the control valve combination on the low-pressure hydrogenation branch, the medium-pressure hydrogenation branch and the high-pressure hydrogenation branch; only when all levels of hydrogen storage bottle groups can not meet the hydrogenation requirement, the control unit outputs a control signal, starts the hydrogen compressor, and hydrogenates the fuel cell automobile through the direct charging hydrogenation branch by the hydrogen compressor until the hydrogen compressor is full. When no hydrogen fuel cell vehicle needs hydrogenation, the hydrogen compressor is started, and the high-pressure hydrogen storage cylinder group, the medium-pressure hydrogen storage cylinder group and the low-pressure hydrogen storage cylinder group are charged with hydrogen in sequence by controlling the control valve.
Description
Technical Field
The utility model relates to a hydrogenation control system for hydrogenation station, specifically speaking, the utility model relates to a hydrogenation order optimal control system who is applicable to 35MPa or 70MPa hydrogenation station usefulness.
Background
As a new automobile fuel, hydrogen has the advantages of small air pollution, high heat efficiency, rich sources, economy and the like, and in order to solve the problem of air pollution caused by the traditional fuel automobile, the hydrogen fuel cell automobile is vigorously developed in the country in recent years. In order to solve the problem of the endurance of hydrogen fuel cell vehicles, the nation has a plan to build hydrogen stations in various places.
The hydrogen adding station is a gas station for providing hydrogen for a hydrogen fuel cell automobile, and the hydrogen supplied by the hydrogen adding station mainly comprises two types: liquid hydrogen and high-pressure hydrogen, at present, the hydrogen supplied by domestic hydrogen stations is mainly high-pressure hydrogen. The hydrogen is from an external supply (transported to a hydrogenation station by a trailer truck) or produced on site. The hydrogenation process comprises the following steps: the externally supplied hydrogen or the hydrogen produced on site is firstly delivered to the hydrogen storage bottle group for the station through the hydrogen compressor, and then is hydrogenated to the vehicle-mounted hydrogen storage bottle through the hydrogenation machine by utilizing the pressure difference between the hydrogen storage bottle group for the station and the vehicle-mounted hydrogen storage bottle.
The filling pressure of the vehicle-mounted hydrogen storage bottle of the household car is 70MPa, the filling pressure of the vehicle-mounted hydrogen storage bottle of the commercial vehicle (such as a passenger car, a large truck, a van and the like) is 35MPa, and the pressures of the corresponding hydrogen storage bottle groups for the hydrogen station are respectively 45MPa and 90 MPa.
At present, when a hydrogenation station hydrogenates different types of vehicles, hydrogen storage cylinder sets for the station need to be continuously switched, a hydrogen compressor needs to be frequently started and stopped, and a fixed hydrogenation operation sequence does not exist.
Disclosure of Invention
In view of the above, the present invention provides a hydrogen adding sequence optimization control system for a hydrogen adding station, which optimizes the charging sequence of hydrogen storing bottle set for the hydrogen adding station and the sequence of hydrogen storing bottle set for the station opening to the hydrogen adding machine, and maximizes the charging capability of the hydrogen storing bottle set for the station, thereby improving the efficiency of hydrogen adding for fuel cell vehicles.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a hydrogenation sequence optimization control system for a hydrogenation station is characterized by comprising a direct charging hydrogenation branch, a high-pressure hydrogenation branch, a medium-pressure hydrogenation branch and a low-pressure hydrogenation branch which are arranged in parallel; each hydrogenation branch comprises a hydrogenation pipeline, a control valve combination and a pressure transmitter which are arranged on the hydrogenation pipeline in series;
one end of the direct-charging hydrogenation branch is connected with the gas outlet of the hydrogen compressor, and the other end of the direct-charging hydrogenation branch is connected with the gas inlet of the hydrogenation machine;
one end of the high-pressure hydrogenation branch is connected with the high-pressure hydrogen storage bottle group for the station, and the other end of the high-pressure hydrogenation branch is connected with the air inlet of the hydrogenation machine;
one end of the medium-pressure hydrogenation branch is connected with the station medium-pressure hydrogen storage bottle group, and the other end of the medium-pressure hydrogenation branch is connected with the air inlet of the hydrogenation machine;
one end of the low-pressure hydrogenation branch is connected with the low-pressure hydrogen storage bottle group for the station, and the other end of the low-pressure hydrogenation branch is connected with the air inlet of the hydrogenation machine;
when a hydrogen fuel cell automobile needs hydrogenation, firstly, a hydrogen compressor is not started, a low-pressure hydrogen storage cylinder group is considered preferentially, then a medium-pressure hydrogen storage cylinder group is considered, and finally a high-pressure hydrogen storage cylinder group is considered, the on/off of a control valve combination on the low-pressure, medium-pressure and high-pressure hydrogenation branches is controlled, and the hydrogen fuel cell automobile is hydrogenated by the low-pressure hydrogen storage cylinder group, the medium-pressure hydrogen storage cylinder group and the high-pressure hydrogen storage cylinder group in sequence; and only when the hydrogen storage cylinder groups at all levels can not meet the hydrogenation requirement, starting the hydrogen compressor, and hydrogenating the hydrogen fuel cell automobile by the hydrogen compressor through the direct charging hydrogenation branch until the hydrogen fuel cell automobile is fully charged.
Preferably, the gas outlet of the hydrogen compressor is also connected with a station high-pressure hydrogen storage cylinder group through a high-pressure hydrogen charging pipeline, a control valve combination and a pressure transmitter which are connected in series on the high-pressure hydrogen charging pipeline;
the gas outlet of the hydrogen compressor is connected with a station medium-pressure hydrogen storage bottle group through a medium-pressure hydrogen charging pipeline, a control valve combination and a pressure transmitter which are connected in series on the medium-pressure hydrogen charging pipeline;
the gas outlet of the hydrogen compressor is connected with a low-pressure hydrogen storage bottle group for a station through a low-pressure hydrogen charging pipeline, a control valve combination and a pressure transmitter which are connected in series on the low-pressure hydrogen charging pipeline;
when no hydrogen fuel cell vehicle needs hydrogenation, the hydrogen compressor is started to charge the hydrogen storage cylinder group for the station, and the control valves on the high-pressure, medium-pressure and low-pressure hydrogen charging pipelines are controlled to sequentially charge the high-pressure hydrogen storage cylinder group, the medium-pressure hydrogen storage cylinder group and the low-pressure hydrogen storage cylinder group.
Preferably, the rated hydrogen storage pressures of the low-pressure hydrogen storage cylinder group, the medium-pressure hydrogen storage cylinder group and the high-pressure hydrogen storage cylinder group are the same;
when the low-pressure hydrogen storage cylinder group, the medium-pressure hydrogen storage cylinder group and the high-pressure hydrogen storage cylinder group are charged with hydrogen, the starting pressure of the hydrogen compressors is different, and the stopping pressure of the hydrogen compressors is the same;
when the low-pressure hydrogen storage cylinder group is charged with hydrogen, the starting pressure of the hydrogen compressor is lower than that when the medium-pressure hydrogen storage cylinder group is charged with hydrogen;
when the medium-pressure hydrogen storage cylinder group is charged with hydrogen, the starting pressure of the hydrogen compressor is lower than that when the high-pressure hydrogen storage cylinder group is charged with hydrogen.
Preferably, the control valve assembly connected in series to the hydrogenation branch and the hydrogen charging pipeline includes a ball valve and a check valve for controlling on/off of the direct charging hydrogenation branch, the high-pressure hydrogenation branch, the medium-pressure hydrogenation branch, the low-pressure hydrogenation branch, the high-pressure hydrogen charging pipeline, the medium-pressure hydrogen charging pipeline and the low-pressure hydrogen charging pipeline.
Preferably, the ball valve is a manual ball valve or an electric ball valve.
Preferably, the ball valve is an electric ball valve.
Preferably, the control unit is a PLC programmable controller;
the signal output end of the pressure transmitter is connected with the signal input end of the control unit, the control signal output end of the control unit is connected in series in a power supply loop of a coil of an electromagnetic valve for controlling the opening/closing of the electric ball valve, and the opening/closing of the electric ball valve is controlled by controlling the closing or the closing of the electromagnetic valve so as to control the connection/the disconnection of each hydrogenation branch and the hydrogen charging pipeline;
and the control signal output end of the control unit is connected with the control end of the hydrogen compressor, and the hydrogen compressor is started to charge hydrogen for each stage of hydrogen storage cylinder group according to the pressure of each stage of hydrogen storage cylinder group.
Preferably, the hydrogenation order optimization control system for the hydrogenation station further comprises a nitrogen purging branch, and the nitrogen purging branch comprises a pipeline, a one-way valve installed on the pipeline, a manual ball valve and a needle valve.
Drawings
FIG. 1 is a block diagram of the system of the present invention;
FIG. 2 is a flow chart of the present invention for hydrogen fuel cell vehicle hydrogenation;
FIG. 3 is a flow chart of hydrogen charging of the hydrogen storage cylinder set for the station according to the present invention;
fig. 4 is the electric wiring diagram of the control unit PLC programmable controller of the present invention.
Detailed Description
The structural features of the present invention will be further described with reference to the accompanying drawings and examples.
For more rationally, switch station with hydrogen storage cylinder group to the development order of hydrogenation machine in an orderly manner to and rationally fill the dress hydrogen for station with hydrogen storage cylinder group in an orderly manner, the utility model discloses will station with hydrogen storage cylinder group to be three groups, low pressure hydrogen storage cylinder group, medium pressure hydrogen storage cylinder group and high pressure hydrogen storage cylinder group promptly. The rated hydrogen storage pressure of the low-pressure hydrogen storage cylinder group, the medium-pressure hydrogen storage cylinder group and the high-pressure hydrogen storage cylinder group is the same, and the starting pressure of the hydrogen compressor is different and the stopping pressure of the hydrogen compressor is the same when the three hydrogen storage cylinder groups are charged with hydrogen.
For a 35MPa hydrogen station, the starting pressure of the hydrogen compressor can be respectively set to 45MPa, 40MPa and 35MPa for the high-pressure, medium-pressure and low-pressure hydrogen storage cylinder groups. For a hydrogenation station of 70MPa, the starting pressure of the hydrogen compressor can be respectively set to be 90MPa, 80MPa and 70MPa for the high-pressure, medium-pressure and low-pressure hydrogen storage cylinder groups. When a pressure transmitter arranged on a pipeline connected with the high-pressure hydrogen storage cylinder group, the medium-pressure hydrogen storage cylinder group and the low-pressure hydrogen storage cylinder group monitors that the pressure in the hydrogen storage cylinder is lower than a set value, a hydrogen compressor is started to charge hydrogen for the high-pressure hydrogen storage cylinder group, the medium-pressure hydrogen storage cylinder group and the low-pressure hydrogen storage cylinder group.
The volume distribution of each stage of hydrogen storage cylinder group can be determined according to the displacement of the compressor and the hydrogenation demand, for example, the volume ratio of the high, middle and low three stages of hydrogen storage cylinder groups is set to be 2:3: 4.
The utility model discloses a hydrogenation order optimization control system for a hydrogenation station, which comprises a direct-charging hydrogenation branch, a high-pressure hydrogenation branch, a medium-pressure hydrogenation branch and a low-pressure hydrogenation branch which are arranged in parallel, wherein each hydrogenation branch comprises a hydrogenation pipeline, a control valve combination and a pressure transmitter which are connected in series and arranged on the hydrogenation pipeline;
one end of the direct charging hydrogenation branch circuit arranged in parallel is connected with the gas outlet of the hydrogen compressor, and the other end of the direct charging hydrogenation branch circuit is connected with the gas inlet of the hydrogenation machine; one end of the high-pressure hydrogenation branch is connected with the high-pressure hydrogen storage bottle group for the station, and the other end of the high-pressure hydrogenation branch is connected with the air inlet of the hydrogenation machine; one end of the medium-pressure hydrogenation branch is connected with the station medium-pressure hydrogen storage cylinder group, and the other end of the medium-pressure hydrogenation branch is connected with the air inlet of the hydrogenation machine; one end of the low-pressure hydrogenation branch is connected with the low-pressure hydrogen storage bottle group for the station, and the other end of the low-pressure hydrogenation branch is connected with the air inlet of the hydrogenation machine;
when a hydrogen fuel cell automobile needs hydrogenation, firstly, a hydrogen compressor is not started, but a low-pressure hydrogen storage cylinder group is considered preferentially, then a medium-pressure hydrogen storage cylinder group is considered, and finally a high-pressure hydrogen storage cylinder group is considered, and the low-pressure hydrogen storage cylinder group, the medium-pressure hydrogen storage cylinder group and the high-pressure hydrogen storage cylinder group are used for sequentially and respectively hydrogenating the fuel cell automobile by controlling control valve combinations on corresponding hydrogenation branches; and only when all hydrogen storage cylinder groups can not meet the hydrogenation requirement, starting the hydrogen compressor, and hydrogenating the fuel cell automobile by the hydrogen compressor through the direct charging hydrogenation branch until the fuel cell automobile is fully charged.
In addition, the gas outlet of the hydrogen compressor of the utility model is connected with the high-pressure hydrogen storage bottle group for the station through the high-pressure hydrogen charging pipeline, the control valve combination which is connected in series on the high-pressure hydrogen charging pipeline and the pressure transmitter;
the gas outlet of the hydrogen compressor is connected with the station medium-pressure hydrogen storage bottle group through a medium-pressure hydrogen charging pipeline, a control valve combination and a pressure transmitter which are connected in series on the medium-pressure hydrogen charging pipeline;
the gas outlet of the hydrogen compressor is connected with the low-pressure hydrogen storage bottle group for the station through a low-pressure hydrogen charging pipeline, a control valve combination and a pressure transmitter which are connected in series on the low-pressure hydrogen charging pipeline;
when the vehicle without the hydrogen fuel cell needs to be hydrogenated, the hydrogen compressor is started to charge hydrogen for the hydrogen storage cylinder group for the station, the high-pressure hydrogen storage cylinder group is preferentially charged by controlling the control valve on the corresponding hydrogen charging pipeline, then the medium-pressure hydrogen storage cylinder group is charged, and finally the low-pressure hydrogen storage cylinder group is charged.
The control valve combination connected in series on the hydrogenation branch and the hydrogen charging pipeline comprises a ball valve and a one-way valve for controlling the on/off of the direct charging hydrogenation branch, the high-pressure hydrogenation branch, the medium-pressure hydrogenation branch, the low-pressure hydrogenation branch, the high-pressure hydrogen charging pipeline, the medium-pressure hydrogen charging pipeline and the low-pressure hydrogen charging pipeline.
The ball valve is a manual ball valve or an electric ball valve.
The utility model also comprises a control unit and an electromagnetic valve for controlling the opening/closing of each electric ball valve;
the signal output end of the pressure transmitter is connected with the signal input end of the control unit, the control signal output end of the control unit is connected in series in the electromagnetic valve power supply loop, and the opening/closing of the electric ball valve is controlled by controlling the closing or the closing of the electromagnetic valve, so that the connection/the closing of each hydrogenation branch and each hydrogen charging pipeline is controlled.
And the control signal output end of the control unit is connected with the control end of the hydrogen compressor, and the hydrogen compressor is started to charge hydrogen for the hydrogen storage cylinder group according to the pressure of each stage of hydrogen storage cylinder group.
The control unit can be a PLC programmable controller or a singlechip.
As shown in figure 1, the utility model discloses a hydrogenation for hydrogenation station order optimizing control system is including directly filling hydrogenation branch road 1, high pressure hydrogenation branch road 2, middling pressure hydrogenation branch road 3 and low pressure hydrogenation branch road 4 of parallelly connected setting. One end of the direct-charging hydrogenation branch 1 is connected with the gas outlet of a hydrogen compressor 5, the other end of the direct-charging hydrogenation branch is connected with the gas inlet of a hydrogenation machine 6, one end of the high-pressure hydrogenation branch 2 is connected with a high-pressure hydrogen storage cylinder group 7 for a station, and the other end of the high-pressure hydrogenation branch is connected with the gas inlet of the hydrogenation machine 6; one end of the medium-pressure hydrogenation branch 3 is connected with a station medium-pressure hydrogen storage cylinder group 8, and the other end is connected with an air inlet of a hydrogenation machine; one end of the low-pressure hydrogenation branch 4 is connected with a low-pressure hydrogen storage bottle group 9 for station use, and the other end is connected with the air inlet of the hydrogenation machine.
Each hydrogenation branch comprises a hydrogenation pipeline, a control valve combination and a pressure transmitter which are arranged on the hydrogenation pipeline in series. As shown in figure 1, a manual ball valve MBV-001 and a check valve CV-007 are arranged on a pipeline of the direct charging hydrogenation branch 1. An electric ball valve PVB-004, an electromagnetic valve EV-004 for controlling the on/off of the electric ball valve PVB-004 and a one-way valve CV-004 are arranged on a hydrogenation pipeline of the high-pressure hydrogenation branch 2. An electric ball valve PVB-005, an electromagnetic valve EV-005 and a one-way valve CV-005 for controlling the on/off of the electric ball valve PVB-005 are arranged on a hydrogenation pipeline of the medium-pressure hydrogenation branch 3. An electric ball valve PVB-006, an electromagnetic valve EV-006 for controlling the on/off of the electric ball valve PVB-006 and a check valve CV-006 are arranged on a hydrogenation pipeline of the low-pressure hydrogenation branch 4.
The utility model discloses install a pressure transmitter PT007 on the pipeline of hydrogenation machine 6 inlet port department, install pressure transmitter PT001 on the hydrogenation pipeline of high pressure hydrogenation branch road 2, install pressure transmitter PT002 on the hydrogenation pipeline of medium pressure hydrogenation branch road 3, install pressure transmitter PT003 on the hydrogenation pipeline of low pressure hydrogenation branch road 4.
As shown in fig. 2, when a hydrogen fuel cell vehicle needs to be hydrogenated, firstly, a switch MBV-004 of the low-pressure hydrogen storage cylinder group 9 is opened, a pressure transmitter PT003 detects whether the pressure in the low-pressure hydrogen storage cylinder group 9 is higher than the pressure P1 in a vehicle-mounted hydrogen storage cylinder of the fuel cell vehicle, if the pressure in the low-pressure hydrogen storage cylinder group 9 is higher than the pressure P1 in the vehicle-mounted hydrogen storage cylinder, a control unit outputs a control signal to electrify a coil of a relay EV-006, a normally open contact is closed, an electric ball valve PBV-006 is further opened, a low-pressure hydrogenation branch 4 is conducted, and the fuel cell vehicle is hydrogenated by using the low-pressure hydrogen storage cylinder group 9 at a station;
if the pressure of the low-pressure hydrogen storage cylinder group 9 is lower than the pressure P1 of the vehicle-mounted hydrogen storage cylinder, or in the hydrogenation process, the pressure of the station-used low-pressure hydrogen storage cylinder group 9 is lower than the pressure P1 of the vehicle-mounted hydrogen storage cylinder, and the vehicle-mounted hydrogen storage cylinder is not fully filled with hydrogen, a switch MBV-003 of the medium-pressure hydrogen storage cylinder group 8 is opened, whether the pressure in the medium-pressure hydrogen storage cylinder group 8 is higher than the pressure P1 in the vehicle-mounted hydrogen storage cylinder of the fuel cell vehicle is detected by a pressure transmitter PT002 installed in the medium-pressure hydrogenation branch 3, if the pressure in the medium-pressure hydrogen storage cylinder group 8 is higher than the pressure P1 in the vehicle-mounted hydrogen storage cylinder, the control unit outputs a control signal to enable an EV-005 coil to be powered, a normally open contact is closed, and then an electric ball valve PBV-005 is opened, and the fuel;
if the pressure of the medium-pressure hydrogen storage cylinder group 8 is lower than the pressure P1 of the vehicle-mounted hydrogen storage cylinder of the fuel cell vehicle, or during the hydrogenation process, the pressure of the medium-pressure hydrogen storage cylinder group 8 is lower than the pressure of the vehicle-mounted hydrogen storage cylinder of the fuel cell vehicle, and the vehicle-mounted hydrogen storage bottle is not filled with hydrogen, the switch MBV-002 of the high-pressure hydrogen storage bottle group 7 is opened, whether the pressure in the hydrogenation pipeline of the high-pressure hydrogenation branch 2 is higher than the pressure P1 in the vehicle-mounted hydrogen storage bottle of the fuel cell vehicle is detected by a pressure transmitter PT001 arranged in the high-pressure hydrogenation branch 2, if the pressure in the high-pressure hydrogen storage cylinder group 7 is higher than the pressure P1 in the vehicle-mounted hydrogen storage cylinder, the control unit outputs a control signal to electrify the coil of the relay EV-004 and close the normally open contact, then opening the electric ball valve PBV-004, and hydrogenating the fuel cell automobile through the high-pressure hydrogenation branch 2 and the station high-pressure hydrogen storage cylinder group 7;
if the pressure of the high-pressure hydrogen storage cylinder group 7 is lower than the pressure P1 of the vehicle-mounted hydrogen storage cylinder of the fuel cell vehicle, or in the hydrogenation process, the pressure of the high-pressure hydrogen storage cylinder group 7 is lower than the pressure of the vehicle-mounted hydrogen storage cylinder of the fuel cell vehicle, and the vehicle-mounted hydrogen storage cylinder is not fully filled with hydrogen, the manual ball valve MBV-001 is opened, the hydrogen compressor is started, the vehicle-mounted hydrogen storage cylinder is directly hydrogenated by the hydrogen compressor through the direct-charging hydrogenation branch 1 and the hydrogenation machine until the vehicle-mounted hydrogen storage cylinder is fully filled with hydrogen, namely, the pressure transmitter PT007 detects that the pressure in the hydrogenation pipeline is higher than the pressure P1 in.
That is to say, the utility model discloses when giving fuel cell car hydrogenation, the priority takes low pressure hydrogen storage bottle group into account, then considers the medium pressure hydrogen storage bottle group, considers the high pressure hydrogen storage bottle group at last, through the control valve combination on the corresponding hydrogenation branch road of control, in proper order respectively by low pressure hydrogen storage bottle group, medium pressure hydrogen storage bottle group, high pressure hydrogen storage bottle group give fuel cell car hydrogenation; if all levels of hydrogen storage cylinder groups can not meet the hydrogenation requirement, the hydrogen compressor is started, and the hydrogen compressor hydrogenates the fuel cell automobile through the direct charging hydrogenation branch.
As shown in fig. 1, the gas outlet of the hydrogen compressor 5 of the present invention is connected to the high-pressure hydrogen storage cylinder group 7 through a high-pressure hydrogen charging pipeline 10, an electric ball valve PBV-001, a check valve CV-001, and a solenoid valve EV-001 for controlling the on/off of the electric ball valve PBV-001;
the gas outlet of the hydrogen compressor 5 is connected with the station medium-pressure hydrogen storage cylinder group 8 through a medium-pressure hydrogen charging pipeline 11, an electric ball valve PBV-002, a one-way valve CV-002 and an electromagnetic valve EV-002 for controlling the on/off of the electric ball valve PBV-002 which are connected in series on the medium-pressure hydrogen charging pipeline;
the gas outlet of the hydrogen compressor 5 is connected with the station low-pressure hydrogen storage cylinder group 9 through a low-pressure hydrogen charging pipeline 12, an electric ball valve PBV-003, a one-way valve CV-003 and an electromagnetic valve EV-003 for controlling the on/off of the electric ball valve PBV-003 in series connection with the low-pressure hydrogen charging pipeline.
When the fuel cell vehicle is not hydrogenated, the hydrogen compressor charges the hydrogen storage cylinder group for the station, and for a hydrogenation station with 35MPa, the starting pressure of the hydrogen compressor can be respectively set to be 45MPa, 40MPa and 35MPa for the high-pressure, medium-pressure and low-pressure hydrogen storage cylinder groups. For a hydrogenation station of 70MPa, the starting pressure of the hydrogen compressor can be respectively set to be 90MPa, 80MPa and 70MPa for the high-pressure, medium-pressure and low-pressure hydrogen storage cylinder groups. When the pressure in the hydrogen storage cylinder group monitored by the pressure transmitter arranged on the pipeline connected with the high-pressure hydrogen storage cylinder group, the medium-pressure hydrogen storage cylinder group and the low-pressure hydrogen storage cylinder group is lower than a set value, the hydrogen compressor is started to charge hydrogen for the high-pressure hydrogen storage cylinder group, the medium-pressure hydrogen storage cylinder group and the low-pressure hydrogen storage cylinder group in sequence.
As shown in figure 3, the utility model discloses at first whether the pressure in detecting high-pressure hydrogen storage cylinder group 7 through pressure transmitter PT001 is less than setting value P2, whether the hydrogen that stands in with high-pressure hydrogen storage cylinder group 7 is full of promptly, if be less than the setting value, the control unit then output control signal makes relay EV-001 coil electrified, normally open contact is closed, electric ball valve PBV-001 is opened, the hydrogen compressor passes through electric ball valve PBV-001, check valve CV-001 charges hydrogen for the station with high-pressure hydrogen storage cylinder group 7.
If the pressure in the high-pressure hydrogen storage cylinder group 7 reaches a set value, the hydrogen in the station high-pressure hydrogen storage cylinder group 7 is full, or the station high-pressure hydrogen storage cylinder group 7 is full of hydrogen in the hydrogen filling process, the control unit outputs a control signal to close the electric ball valve PBV-001, detects whether the pressure in the medium-pressure hydrogen storage cylinder group 8 reaches the set value through the pressure transmitter PT002, if the pressure is lower than the set value, the control unit outputs a control signal to enable the relay EV-002 coil to be electrified, the normally-open contact is closed, the electric ball valve PBV-002 is opened, and the hydrogen compressor fills hydrogen into the station medium-pressure hydrogen storage cylinder group 8 through the electric ball valve PBV-002 and the check valve CV-002.
If the pressure in the medium-pressure hydrogen storage cylinder group 8 reaches a set value, the hydrogen in the station medium-pressure hydrogen storage cylinder group 8 is full, or in the hydrogen charging process, namely the station medium-pressure hydrogen storage cylinder group 8 is full of hydrogen, the control unit outputs a control signal to close the electric ball valve PBV-02, detects whether the pressure in the low-pressure hydrogen storage cylinder group 9 reaches the set value through the pressure transmitter PT-003, if the pressure is lower than the set value, the control unit outputs the control signal to enable the coil of the relay EV-003 to be electrified, the normally open contact is closed, the electric ball valve PBV-003 is opened, and the hydrogen compressor charges the station low-pressure hydrogen storage cylinder group 9 through the electric ball valve PBV-003 and the one-way valve CV-003; when the pressure transmitter PT-003 detects that the pressure in the low-pressure hydrogen storage cylinder group 9 reaches a set value, namely the low-pressure hydrogen storage cylinder group 9 is filled with hydrogen, the control unit outputs a control signal to close the electromagnetic valve EV-003, close the electric ball valve PBV-003 and close the power supply of the hydrogen compressor so as to stop the hydrogen compressor.
That is to say, the utility model discloses when there is not fuel automobile hydrogenation, hydrogen compressor charges hydrogen for the hydrogen storage bottle group of standing, and the order of charging is that the high pressure hydrogen storage bottle group of standing earlier is used, and medium pressure hydrogen storage bottle group again stands at last and uses low pressure hydrogen storage bottle group.
In order to observe the pressure in the hydrogen storage bottle group for the station and grasp the hydrogen amount in the hydrogen storage bottle group, the utility model discloses install manometer PI101, PI102, PI103 respectively on the pipeline that links to each other with high-pressure hydrogen storage bottle group 7 for the station, medium-pressure hydrogen storage bottle group 8 for the station, low-pressure hydrogen storage bottle group 9 for the station.
As shown in figure 1, the utility model discloses still include a nitrogen gas and sweep the branch road, this nitrogen gas sweeps the branch road and includes pipeline 13, installs check valve CV-008 on the pipeline, manual ball valve MBV-002 to and install needle valve HNV-001, HNV-002, HNV-003, HNV-004 on each hydrogenation branch road and the hydrogen filling pipeline, the branch road that adds hydrogen when being used for overhauing, the diffusion of hydrogen filling pipeline hydrogen and the replacement of nitrogen gas.
The utility model discloses the control unit can be PLC programmable controller, also can be the singlechip. As shown in fig. 4, in the specific embodiment of the present invention, the control unit is a PLC programmable controller, the signal output terminals of the pressure transmitters PT001, PT002, PT003, PT007 are connected to the signal input terminals aio.1, aio.2, aio.3, aio.4 of the PLC programmable controller, the control signal output terminal of the PLC programmable controller is connected in series to the coil power supply loop of the electromagnetic valve EV-001-EV-006, and the opening/closing of the electric ball valves PBV-001, PBV-002, … …, PBV-005, PBV-006 is controlled by controlling the closing or closing of the electromagnetic valve, so as to control the on/off of each hydrogenation branch and the hydrogen charging pipeline.
When the fuel cell automobile is hydrogenated, the control unit detects the pressure of each level of hydrogen storage cylinder group according to the pressure transmitter, outputs a control signal to control the on/off of a control valve combination on the hydrogenation branch, and sequentially hydrogenates the fuel cell automobile by the low-pressure hydrogen storage cylinder group, the medium-pressure hydrogen storage cylinder group and the high-pressure hydrogen storage cylinder group.
When the hydrogen storage cylinder group is charged with hydrogen, the control power supply outputs control signals according to the pressure of each level of hydrogen storage cylinder group detected by the pressure transmitter, controls the on/off of the control valve combination on the hydrogen charging pipeline and sequentially charges the high-pressure, medium-pressure and low-pressure hydrogen storage cylinder groups with hydrogen.
The utility model has the advantages that: the utility model discloses a filling of hydrogen storage bottle group is used at orderly control hydrogenation station and filling order and station are organized to the open order of hydrogenation machine with hydrogen storage bottle, and furthest performance station is with filling, adorning the ability of hydrogen storage bottle group, improves the efficiency for fuel cell car hydrogenation, makes the hydrogenation work high efficiency, the swift at whole hydrogenation station.
Finally, it should be noted that: the above-mentioned embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (8)
1. A hydrogenation sequence optimization control system for a hydrogenation station is characterized by comprising a direct charging hydrogenation branch, a high-pressure hydrogenation branch, a medium-pressure hydrogenation branch and a low-pressure hydrogenation branch which are arranged in parallel; each hydrogenation branch comprises a hydrogenation pipeline, a control valve combination and a pressure transmitter which are arranged on the hydrogenation pipeline in series;
one end of the direct-charging hydrogenation branch is connected with the gas outlet of the hydrogen compressor, and the other end of the direct-charging hydrogenation branch is connected with the gas inlet of the hydrogenation machine;
one end of the high-pressure hydrogenation branch is connected with the high-pressure hydrogen storage bottle group for the station, and the other end of the high-pressure hydrogenation branch is connected with the air inlet of the hydrogenation machine;
one end of the medium-pressure hydrogenation branch is connected with the station medium-pressure hydrogen storage bottle group, and the other end of the medium-pressure hydrogenation branch is connected with the air inlet of the hydrogenation machine;
one end of the low-pressure hydrogenation branch is connected with the low-pressure hydrogen storage bottle group for the station, and the other end of the low-pressure hydrogenation branch is connected with the air inlet of the hydrogenation machine;
when a hydrogen fuel cell automobile needs hydrogenation, a hydrogen compressor is not started at first, the control valve combination on the low-pressure, medium-pressure and high-pressure hydrogenation branches is controlled to be switched on or switched off, and the hydrogen fuel cell automobile is hydrogenated by the low-pressure hydrogen storage cylinder group, the medium-pressure hydrogen storage cylinder group and the high-pressure hydrogen storage cylinder group in sequence; and only when the hydrogen storage cylinder groups at all levels can not meet the hydrogenation requirement, starting the hydrogen compressor, and hydrogenating the hydrogen fuel cell automobile by the hydrogen compressor through the direct charging hydrogenation branch until the hydrogen fuel cell automobile is fully charged.
2. The optimized control system for hydrogenation sequence in hydrogenation station as claimed in claim 1, wherein the gas outlet of the hydrogen compressor is further connected to the high-pressure hydrogen storage cylinder set via a high-pressure hydrogen charging pipeline, a control valve assembly connected in series to the high-pressure hydrogen charging pipeline, and a pressure transmitter;
the gas outlet of the hydrogen compressor is connected with a station medium-pressure hydrogen storage bottle group through a medium-pressure hydrogen charging pipeline, a control valve combination and a pressure transmitter which are connected in series on the medium-pressure hydrogen charging pipeline;
the gas outlet of the hydrogen compressor is connected with a low-pressure hydrogen storage bottle group for a station through a low-pressure hydrogen charging pipeline, a control valve combination and a pressure transmitter which are connected in series on the low-pressure hydrogen charging pipeline;
when no hydrogen fuel cell vehicle needs hydrogenation, the hydrogen compressor is started to charge the hydrogen storage cylinder group for the station, and the control valves on the high-pressure, medium-pressure and low-pressure hydrogen charging pipelines are controlled to sequentially charge the high-pressure hydrogen storage cylinder group, the medium-pressure hydrogen storage cylinder group and the low-pressure hydrogen storage cylinder group.
3. The optimized control system for hydrogenation sequence in hydrogenation station as claimed in claim 2, wherein the rated hydrogen storage pressure of said low pressure hydrogen storage cylinder group, medium pressure hydrogen storage cylinder group and high pressure hydrogen storage cylinder group is the same;
when the low-pressure hydrogen storage cylinder group, the medium-pressure hydrogen storage cylinder group and the high-pressure hydrogen storage cylinder group are charged with hydrogen, the starting pressure of the hydrogen compressors is different, and the stopping pressure of the hydrogen compressors is the same;
when the low-pressure hydrogen storage cylinder group is charged with hydrogen, the starting pressure of the hydrogen compressor is lower than that when the medium-pressure hydrogen storage cylinder group is charged with hydrogen;
when the medium-pressure hydrogen storage cylinder group is charged with hydrogen, the starting pressure of the hydrogen compressor is lower than that when the high-pressure hydrogen storage cylinder group is charged with hydrogen.
4. The system of claim 3, wherein the combination of control valves connected in series to the hydrogenation branch and the hydrogen charging pipeline comprises a ball valve and a check valve for controlling the on/off of the straight hydrogen charging branch, the high pressure hydrogen charging branch, the medium pressure hydrogen charging branch, the low pressure hydrogen charging branch, the high pressure hydrogen charging pipeline, the medium pressure hydrogen charging pipeline and the low pressure hydrogen charging pipeline.
5. The optimized control system for a hydrogen adding sequence in a hydrogen adding station of claim 4, wherein the ball valve is a manual ball valve.
6. The optimized control system for a hydrogenation sequence in a hydrogenation station of claim 4, wherein said ball valve is an electric ball valve.
7. The optimized hydrogenation sequence control system for the hydrogenation station as claimed in claim 6, further comprising a control unit, wherein the control unit is a PLC programmable controller;
the signal output end of the pressure transmitter is connected with the signal input end of the control unit, the control signal output end of the control unit is connected in series in a power supply loop of a coil of an electromagnetic valve for controlling the opening/closing of the electric ball valve, and the opening/closing of the electric ball valve is controlled by controlling the closing or the closing of the electromagnetic valve so as to control the connection/the disconnection of each hydrogenation branch and the hydrogen charging pipeline;
and the control signal output end of the control unit is connected with the control end of the hydrogen compressor, and the hydrogen compressor is started to charge hydrogen for each stage of hydrogen storage cylinder group according to the pressure of each stage of hydrogen storage cylinder group.
8. The optimized control system for hydrogenation sequence in hydrogenation station of claim 1-7, further comprising a nitrogen purge branch comprising pipeline, check valve installed on the pipeline, manual ball valve, needle valve.
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