CN114526443A - Control system for hydrogen switching - Google Patents
Control system for hydrogen switching Download PDFInfo
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- CN114526443A CN114526443A CN202210428054.2A CN202210428054A CN114526443A CN 114526443 A CN114526443 A CN 114526443A CN 202210428054 A CN202210428054 A CN 202210428054A CN 114526443 A CN114526443 A CN 114526443A
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- 239000001257 hydrogen Substances 0.000 title claims abstract description 295
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 295
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 294
- 239000007789 gas Substances 0.000 claims abstract description 116
- 238000005984 hydrogenation reaction Methods 0.000 claims abstract description 108
- 238000007599 discharging Methods 0.000 claims abstract description 64
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 72
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 33
- 238000004880 explosion Methods 0.000 claims description 20
- 230000001629 suppression Effects 0.000 claims description 20
- 230000001105 regulatory effect Effects 0.000 claims description 10
- 230000001276 controlling effect Effects 0.000 claims description 7
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 22
- 239000003921 oil Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 239000000498 cooling water Substances 0.000 description 7
- 150000002431 hydrogen Chemical class 0.000 description 7
- 239000010720 hydraulic oil Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 238000005429 filling process Methods 0.000 description 5
- 230000033228 biological regulation Effects 0.000 description 4
- 238000007865 diluting Methods 0.000 description 4
- 102100023600 Fibroblast growth factor receptor 2 Human genes 0.000 description 3
- 101000827688 Homo sapiens Fibroblast growth factor receptor 2 Proteins 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
Images
Classifications
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
- F17C13/023—Special adaptations of indicating, measuring, or monitoring equipment having the mass as the parameter
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/04—Arrangement or mounting of valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/12—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
-
- 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
- F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
- F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
- F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
-
- 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
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/01—Propulsion of the fluid
- F17C2227/0128—Propulsion of the fluid with pumps or compressors
- F17C2227/0157—Compressors
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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
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/04—Indicating or measuring of parameters as input values
- F17C2250/0404—Parameters indicated or measured
- F17C2250/0421—Mass or weight of the content of the vessel
-
- 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
- F17C2260/00—Purposes of gas storage and gas handling
- F17C2260/04—Reducing risks and environmental impact
- F17C2260/042—Reducing risk of explosion
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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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention relates to a control system for hydrogen switching, which comprises an air discharge column unit, a hydrogen-related prying unit, a high-pressure hydrogen storage tank and a hydrogenation machine, wherein the air discharge column unit comprises a main air discharge column, a standby air discharge column and a hydrogen pipeline, and the standby air discharge column is connected with the main air discharge column through the hydrogen pipeline, so that the pipelines of the main air discharge column and the standby air discharge column are connected, and the standby air discharge column and the main air discharge column both adopt mass flowmeters on the main air discharge column, thereby effectively saving equipment cost. The main gas discharging column and the standby gas discharging column are connected with the hydrogen tube bundle type container through hydrogen hoses, and the circulation of hydrogen of the main gas discharging column and the standby gas discharging column is controlled through the pipeline control module, so that the rapid switching between the main gas discharging column and the standby gas discharging column is completed, the two hydrogen tube bundle type containers are used as low and medium pressure gas sources and matched with a high-pressure hydrogen storage tank in a station, the hydrogen utilization rate is improved, the coke-water effect is reduced, and the continuity of the whole set of control system in operation is also ensured.
Description
Technical Field
The invention relates to the technical field of hydrogenation control, in particular to a control system for hydrogen switching.
Background
The standardized modular hydrogenation station can be mainly divided into a gas unloading column, a hydrogen involved pry, a non-hydrogen involved pry and a hydrogenation machine. In involving hydrogen sled, integrated pressure boost module and nitrogen gas explosion suppression system, in not involving hydrogen sled integrated equipment such as nitrogen gas source, cooling water set.
The gas discharging column is mainly used for being connected with a hydrogen tube bundle container to complete the discharging of hydrogen, and the hydrogen is transported to a hydrogen prying and pressurizing module through a pipeline in a station, wherein a pressure gauge (used for manual observation during nitrogen/hydrogen replacement), a pressure transmitter (used for displaying hydrogen source pressure after the hydrogen tube bundle container is communicated), a safety valve, a pneumatic valve, a filter, a mass flowmeter and other equipment are integrated in the gas discharging column, and various requirements of nitrogen replacement, hydrogen replacement and final hydrogen discharging before the hydrogen tube bundle container is discharged can be well met.
The existing gas discharging column of the hydrogenation station has no quick switching function, so that low-pressure hydrogen in a tube bundle container cannot be effectively utilized, and the continuity of the whole hydrogenation system in operation cannot be ensured.
Disclosure of Invention
The invention aims to provide a control system for hydrogen switching, which effectively utilizes low-pressure and medium-pressure hydrogen in a tube bundle type container as a low-medium-pressure hydrogen storage tank, effectively improves the hydrogenation efficiency and saves the construction cost. Meanwhile, the problem of continuity during operation of the whole set of hydrogenation system is solved by improving two gas discharging columns of the existing standardized modular hydrogenation station.
In order to achieve the purpose, the invention provides a control system for hydrogen switching, which comprises an air unloading column unit, a hydrogen-involved prying unit, a high-pressure hydrogen storage tank and a hydrogenation machine, wherein the air unloading column unit, the hydrogen-involved prying unit and the hydrogenation machine are all arranged on an integral prying device, and the air unloading column unit, the hydrogen-involved prying unit, the high-pressure hydrogen storage tank and the hydrogenation machine are sequentially connected through pipelines;
the column unit of unloading is including main column, reserve column and hydrogen pipeline of unloading, main column with the input of reserve column of unloading is equallyd divide and is do not connected through a hydrogen hose and a hydrogen tube bank formula container, the one end of hydrogen pipeline with the hydrogen outlet valve intercommunication of reserve column of unloading, the other end of hydrogen pipeline with the hydrogen outlet pneumatic valve intercommunication of main column of unloading, and be located the mass flow meter's of main column of unloading front end, main column of unloading with all be provided with pipeline control module on the reserve column of unloading, pipeline control module is used for control main column of unloading with the circulation of the hydrogen of reserve column of unloading.
Because reserve gas column of unloading with the main gas column of unloading passes through hydrogen pipe coupling makes the main gas column of unloading with the pipeline of reserve gas column of unloading is connected, realizes reserve gas column of unloading with the main gas column of unloading all adopts mass flow meter on the main gas column of unloading to effectively save equipment cost, will the main gas column of unloading with the reserve gas column of unloading passes through the hydrogen hose and is connected with hydrogen pipe bundle formula container, then passes through pipeline control module controls the main gas column of unloading with the circulation of the hydrogen of reserve gas column of unloading, thereby accomplishes the main gas column of unloading with fast switch-over between the reserve gas column of unloading, and then guarantee the utilization of low pressure hydrogen and the continuity when whole set of hydrogenation system moves.
The pipeline control modules comprise manual control ball valves and one-way valves, the one-way valves are used for preventing hydrogen from flowing back to the hydrogen bundle to be dragged, and the manual control ball valves are used for controlling circulation of the hydrogen.
Utilize manual control ball valve control reserve gas column with the circulation of hydrogen in the main gas column of unloading, the check valve is used for avoiding main gas column of unloading with hydrogen backward flow to hydrogen tube bank trailer in the reserve gas column of unloading.
Wherein, wade hydrogen sled unit and include pressure boost module, buffer tank module and high-pressure hydrogen outlet valve, pressure boost module with through middling pressure hydrogen pipeline intercommunication between the hydrogen outlet valve of main gas column of unloading, pressure boost module with be provided with between the high-pressure hydrogen outlet valve the buffer tank module, high-pressure hydrogen outlet valve with high-pressure hydrogen storage tank, hydrogenation machine module pipe connection, the buffer tank module is used for making the hydrogen pressure fluctuation after the compression can reduce relatively, exports high-pressure hydrogen extremely gently the hydrogenation machine, the high-pressure hydrogen storage tank is used for the high-pressure hydrogen after the storage pressurization through the compressor.
And hydrogen output by the main gas discharge column is conveyed into the pressurizing module through a medium-pressure hydrogen pipeline, after the hydrogen is compressed into compressed hydrogen, the pressure fluctuation of the compressed hydrogen can be relatively reduced by utilizing the buffer tank module, and the compressed hydrogen smoothly passes through the high-pressure hydrogen outlet valve and is output to the high-pressure hydrogen storage tank or the hydrogenation machine.
Wherein, the pressure boost module includes compressor hydrogen inlet valve, compressor bypass valve, compressor main road admission valve and compressor unit, the one end of compressor main road admission valve is provided with compressor hydrogen inlet valve, the other end of compressor main road admission valve is provided with the compressor unit, compressor hydrogen inlet valve through middling pressure hydrogen pipeline with the hydrogen outlet valve intercommunication of main gas column of unloading, the output of compressor unit with buffer tank module intercommunication, compressor hydrogen inlet valve with be provided with between the compressor main road admission valve the compressor bypass valve, the front end of high pressure hydrogen outlet valve is provided with high pressure hydrogen export pneumatic valve, the compressor bypass valve with high pressure hydrogen export pneumatic valve pipeline intercommunication.
During the filling process, the compressor hydrogen inlet valve and the compressor bypass valve are firstly opened, and the flat gas mode is started (namely, hydrogen in the hydrogen tube bundle type container is directly filled through the hydrogenation machine without pressurization).
If the hydrogen pressure in the two gas discharging columns is higher than the set value, the system firstly opens the hydrogen in the gas discharging column with lower pressure to level the gas; and after the pressure difference of the hydrogen in the tube bundle container is smaller than a certain value, opening the other gas discharging column, closing the gas discharging column, continuing to level the gas until the pressure difference of the hydrogen in the tube bundle container with higher pressure and the pressure difference of the vehicle-mounted gas cylinder are smaller than a certain value, switching back the gas discharging column with lower pressure as a gas source, and simultaneously using the hydrogen in the high-pressure hydrogen storage tank to convey the high-pressure hydrogen to the hydrogenation machine.
When the filling is not carried out, the pressurizing module takes an air discharging column with lower pressure as an air source, an air inlet valve of a main path of the compressor is opened, a bypass valve of the compressor is closed, a hydraulic oil pump is started, the oil pressure is established, the compressor unit is started after the oil pressure is stably established, high-pressure hydrogen starts to be input into the high-pressure hydrogen storage tank, the buffer tank module is arranged in front of the high-pressure hydrogen outlet pneumatic valve, and the aim of the pressurizing module is to enable the pressure of the hydrogen output by the compressor to be relatively stable so as to reduce the output pressure fluctuation.
The hydrogenation machine belongs to a single-air-inlet single-metering hydrogenation machine, the hydrogenation machine is provided with a first hydrogenation gun and a second hydrogenation gun, the hydrogenation machine is provided with a pressure regulating valve, a first pneumatic switch valve, a second pneumatic switch valve and an emptying pneumatic switch valve, the pressure regulating valve is used for realizing pressure regulation of hydrogen filling of the hydrogenation machine, the first pneumatic switch valve and the second pneumatic switch valve are used for realizing respective control of the first hydrogenation gun and the second hydrogenation gun, and the emptying pneumatic switch valve is used for realizing a hydrogen emptying process after filling is completed.
The hydrogenation machine belongs to a single-gas-inlet single-metering hydrogenation machine, the hydrogenation machine is provided with a first hydrogenation gun and a second hydrogenation gun, the model of the first hydrogenation gun is TK16, the model of the second hydrogenation gun is TK25, hydrogen can be respectively filled into a logistics vehicle and a bus, the pressure regulation of hydrogen filling of the hydrogenation machine can be realized through the pressure regulating valve in the hydrogenation machine, the filling process is ensured to meet the relevant hydrogen specification requirements, and the respective control of the two guns of the hydrogenation machine and the hydrogen emptying process after the filling process can be realized through the control of the first pneumatic switch valve, the second pneumatic switch valve and the emptying pneumatic switch valve in the hydrogenation machine.
Wherein, wade hydrogen sled unit still includes nitrogen gas explosion suppression system, nitrogen gas explosion suppression system comprises nitrogen gas collection dress check, nitrogen gas pipeline and nitrogen gas explosion suppression nozzle, nitrogen gas explosion suppression nozzle is used for wading hydrogen sled internal release nitrogen gas to the hydrogenation station to reach the effect of diluting hydrogen concentration and putting out a fire.
The nitrogen gas pipeline sets up on the nitrogen gas collection dress check, the output of nitrogen gas pipeline is provided with nitrogen gas explosion suppression nozzle, nitrogen gas explosion suppression nozzle is used for wading hydrogen in the sled to the hydrogenation station and releases nitrogen gas to reach the effect of diluting hydrogen concentration and putting out a fire.
The invention discloses a control system for hydrogen switching, which comprises an air discharging column unit, a hydrogen-related prying unit and a hydrogenation machine, wherein the air discharging column unit comprises a main air discharging column, a standby air discharging column and a hydrogen pipeline, because the standby gas discharging column is connected with the main gas discharging column through the hydrogen pipeline, the pipelines of the main gas discharging column and the standby gas discharging column are connected, so that the standby gas discharging column and the main gas discharging column both adopt the mass flow meter on the main gas discharging column, thereby effectively saving the equipment cost, connecting the main gas discharging column and the standby gas discharging column with the hydrogen tube bundle type container through hydrogen hoses, then controlling the circulation of hydrogen of the main gas discharging column and the standby gas discharging column through the pipeline control module, thereby completing the rapid switching between the main gas discharging column and the standby gas discharging column and further ensuring the continuity of the whole hydrogenation system in operation. Compared with a fixed hydrogenation station, the control system for hydrogen switching only needs one (group of) high-pressure hydrogen storage tank(s), so that the equipment cost is effectively saved, and simultaneously, compared with a common skid-mounted hydrogenation station, the hydrogen filling rate is effectively improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of the overall structure of a control system for hydrogen switching provided by the present invention.
FIG. 2 is a schematic view of the overall structure of the gas column unit provided by the present invention.
Fig. 3 is a schematic view of the overall structure of the hydrogen-related pry unit provided by the invention.
Fig. 4 is an overall enlarged structural schematic diagram of the nitrogen explosion suppression system provided by the invention.
FIG. 5 is a schematic diagram of the overall structure of the hydrogenation unit provided by the present invention.
1-gas column unloading unit, 2-hydrogen prying unit, 3-hydrogenation machine, 4-main gas column unloading, 5-standby gas column unloading, 6-hydrogen pipeline, 7-pipeline control module, 8-manual control ball valve, 9-one-way valve, 10-pressurization module, 11-buffer tank module, 12-high-pressure hydrogen outlet valve, 13-compressor hydrogen inlet valve, 14-compressor bypass valve, 15-compressor main pipeline gas inlet valve, 16-compressor unit, 17-high-pressure hydrogen outlet pneumatic valve, 18-first hydrogenation gun, 19-second hydrogenation gun, 20-pressure regulating valve, 21-first pneumatic switch valve, 22-second pneumatic switch valve, 23-evacuation pneumatic switch valve, 24-nitrogen explosion suppression system, 25-nitrogen packaging grid, 26-nitrogen pipeline, 27-nitrogen explosion suppression nozzle, 28-heat exchanger, 29-first liquid drive piston compressor, 30-second liquid drive piston compressor, 31-high pressure hydrogen evacuation pneumatic valve, 32-high pressure hydrogen storage tank, 33-high pressure hydrogen storage tank pneumatic valve and 34-nitrogen replacement system.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. In addition, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1 to 5, the invention provides a control system for hydrogen gas switching, which includes an air discharge column unit 1, a hydrogen prying unit 2 and a hydrogenation unit 3, wherein the air discharge column unit 1, the hydrogen prying unit 2 and the hydrogenation unit 3 are all mounted on an integral prying device, and the air discharge column unit 1, the hydrogen prying unit 2 and the hydrogenation unit 3 are sequentially connected through a pipeline;
unload gas column unit 1 and include main gas column 4, reserve gas column 5 and hydrogen pipeline 6 of unloading, main gas column 4 with reserve gas column 5's input is equallyd divide and is do not connected through a hydrogen hose and a hydrogen tube bank formula container, hydrogen pipeline 6 one end with reserve gas column 5's hydrogen outlet valve intercommunication, hydrogen pipeline 6 the other end with main gas column 4's hydrogen outlet pneumatic valve intercommunication of unloading, and be located main gas column 4's mass flow meter's front end of unloading, main gas column 4 with reserve gas column 5 is last all to be provided with pipeline control module 7, pipeline control module 7 is used for control main gas column 4 with the circulation of reserve gas column 5's hydrogen.
In this embodiment, the standby gas discharging column 5 and the main gas discharging column 4 are connected through the hydrogen pipeline 6, so that the pipelines of the main gas discharging column 4 and the standby gas discharging column 5 are connected, and the standby gas discharging column 5 and the main gas discharging column 4 both adopt the mass flow meter on the main gas discharging column 4, thereby effectively saving equipment cost, the main gas discharging column 4 and the standby gas discharging column 5 are connected with a hydrogen tube bundle type container through a hydrogen hose, and then the circulation of hydrogen of the main gas discharging column 4 and the standby gas discharging column 5 is controlled through the pipeline control module 7, thereby completing the rapid switching between the main gas discharging column 4 and the standby gas discharging column 5, and further ensuring the continuity of the whole set of hydrogenation system in operation;
the standby gas discharging column 5 and the main gas discharging column 4 are both connected with a hydrogen tube bundle type container through hydrogen hoses, site operators select two gas discharging columns and hoses to complete nitrogen replacement and hydrogen replacement, hand valves on the hydrogen tube bundle type container and the hydrogen main path of the two gas discharging columns are opened, and after hydrogenation is started, the hydrogen station firstly selects the hydrogen tube bundle type container (using the corresponding gas discharging columns) with lower pressure as a gas source to be vehicle flat gas. After the hydrogen pressure difference in the tube bundle container is smaller than a certain value, opening the pneumatic valve of the other gas discharging column, and after a certain time interval (for example, 1 s) or the pressure of the pressure transmitter is obviously increased compared with a set value (for example, 6 MPa) (after two conditions are met, the next step can be executed), closing the pneumatic valve of the currently used gas discharging column and detecting whether the numerical value of the pressure transmitter in the gas discharging column is obviously changed or not (if the numerical value is not changed, the system is normal, if the numerical value is increased compared with the numerical value when the seamless switching mode is started, the system is stopped immediately, and the system is judged to be damaged by process components and needs manual intervention for maintenance). And after the pressure of the hydrogen in the tube bundle container with higher pressure and the pressure difference of the vehicle-mounted gas cylinder are smaller than a certain value, switching back to the gas discharging column with lower pressure as a gas source, simultaneously opening a pneumatic valve 33 of the high-pressure hydrogen storage tank, and using the high-pressure hydrogen storage tank 32 to convey high-pressure hydrogen to the hydrogenation machine.
When the filling is not carried out, the pressurizing module takes an air discharging column with lower pressure as an air source, starts a pressurizing mode, opens the air inlet valve of the main path of the compressor, closes the bypass valve of the compressor, starts the hydraulic oil pump, establishes oil pressure, starts the compressor unit after the oil pressure is stably established, opens the pneumatic valve 33 of the high-pressure hydrogen storage tank, starts to input high-pressure hydrogen into the high-pressure hydrogen storage tank 32, and is provided with the buffer tank module in front of the pneumatic valve at the high-pressure hydrogen outlet, so that the pressure of the hydrogen output by the compressor can be relatively stable, and the output pressure fluctuation can be reduced.
Further, two pipeline control module 7 all includes manual control ball valve 8 and check valve 9, check valve 9 is used for preventing that hydrogen backward flow from dragging to the hydrogen tube bank, manual control ball valve 8 is used for controlling the circulation of hydrogen.
In this embodiment, the manual control ball valve 8 is utilized to control the circulation of hydrogen in the standby gas discharging column 5 and the main gas discharging column 4, and the check valve 9 is used for avoiding the hydrogen in the main gas discharging column 4 and the standby gas discharging column 5 from flowing back to the hydrogen tube bundle to be dragged.
Further, wade hydrogen sled unit 2 and include pressure boost module 10, buffer tank module 11 and high-pressure hydrogen outlet valve 12, pressure boost module 10 with through the 6 intercommunication of middling pressure hydrogen pipeline between the hydrogen outlet valve of main gas discharge column 4, pressure boost module 10 with be provided with between the high-pressure hydrogen outlet valve 12 buffer tank module 11, high-pressure hydrogen outlet valve 12 with high-pressure hydrogen storage tank 32, the 3 module pipe connections of high-pressure hydrogen storage tank pneumatic valve 33 hydrogenation machine, buffer tank module 11 is used for making the hydrogen pressure fluctuation after the compression can reduce relatively, gently exports high-pressure hydrogen extremely high-pressure hydrogen storage tank 32 or hydrogenation machine 3.
In the present embodiment, the hydrogen output from the main gas discharge column 4 is delivered into the pressure increasing module 10 through the medium-pressure hydrogen pipe 6, compressed hydrogen is compressed, the pressure fluctuation of the compressed hydrogen is relatively reduced by the buffer tank module 11, and the high-pressure hydrogen is smoothly output to the high-pressure hydrogen storage tank 32 or the hydrogenation unit 3 through the high-pressure hydrogen outlet valve 12.
Further, the pressurization module 10 includes a compressor hydrogen inlet valve 13, a compressor bypass valve 14, a compressor main intake valve 15 and a compressor unit 16, one end of the compressor main intake valve 15 is provided with the compressor hydrogen inlet valve 13, the other end of the compressor main intake valve 15 is provided with the compressor unit 16, the compressor hydrogen inlet valve 13 is communicated with the hydrogen outlet valve of the main gas discharging column 4 through a medium-pressure hydrogen pipeline 6, the output end of the compressor unit 16 is communicated with the buffer tank module 11, the compressor bypass valve 14 is arranged between the compressor hydrogen inlet valve 13 and the compressor main intake valve 15, the front end of the high-pressure hydrogen outlet valve 12 is provided with a high-pressure hydrogen outlet pneumatic valve 17, and the compressor bypass valve 14 is communicated with the high-pressure hydrogen outlet pneumatic valve 17 through a pipeline.
Further, the system can input high-pressure hydrogen to the hydrogenation machine 3 through a high-pressure hydrogen storage tank 32 or directly transmit the high-pressure hydrogen to the hydrogenation machine through a compressor according to requirements.
When a compressor is used for directly filling a hydrogenation vehicle, firstly, the compressor hydrogen inlet valve 13 and the compressor bypass valve 14 are opened to start a flat gas mode (namely hydrogen in a hydrogen tube bundle type container is directly filled through the hydrogenation machine 3 without pressurization), when the pressure of a hydrogen tube bundle type container air source and the pressure difference of a vehicle-mounted air bottle are smaller than a certain value, the compressor main path air inlet valve 15 is opened, the compressor bypass valve 14 is closed, a hydraulic oil pump is started, oil pressure is built, after the oil pressure is stably built, the compressor unit 16 is started to start a hydrogen pressurization process, and the buffer tank module 11 is arranged in front of the high-pressure hydrogen outlet pneumatic valve 17, so that the pressure of the hydrogen output by the compressor can be relatively stable to reduce output pressure fluctuation.
When a high-pressure hydrogen storage tank 32 is used for filling the hydrogenation vehicle, firstly, the compressor hydrogen inlet valve 13 and the compressor bypass valve 14 are opened, a flat gas mode is started (namely, hydrogen in the hydrogen tube bundle type container is directly filled through the hydrogenation machine 3 without pressurization), when the pressure of a hydrogen tube bundle type container gas source and the pressure difference of a vehicle-mounted gas cylinder are smaller than a certain value, the compressor bypass valve 14 is closed, the pneumatic valve 33 of the high-pressure hydrogen storage tank is opened, and high-pressure hydrogen is directly conveyed to the hydrogenation machine.
When the hydrogen is not filled, the compressor hydrogen inlet valve 13 is opened, the compressor main path air inlet valve 15 is opened by the pressurization module, the hydraulic oil pump is started, the oil pressure is established, after the oil pressure is stably established, the compressor unit 16 is started, the hydrogen pressurization process is started to the high-pressure hydrogen storage tank 32, the buffer tank module 11 is arranged in front of the high-pressure hydrogen outlet pneumatic valve 17, and the purpose of enabling the pressure of the hydrogen output by the compressor to be relatively stable is achieved, so that the output pressure fluctuation is reduced.
Further, the hydrogenation machine 3 belongs to a single-inlet single-metering hydrogenation machine 3, the hydrogenation machine 3 is provided with a first hydrogenation gun 18 and a second hydrogenation gun 19, the hydrogenation machine 3 is provided with a pressure regulating valve 20, a first pneumatic switch valve 21, a second pneumatic switch valve 22 and an emptying pneumatic switch valve 23, the pressure regulating valve 20 is used for realizing pressure regulation of hydrogen filling of the hydrogenation machine 3, the first pneumatic switch valve 21 and the second pneumatic switch valve 22 are used for realizing respective control of the first hydrogenation gun 18 and the second hydrogenation gun 19, and the emptying pneumatic switch valve 23 is used for realizing a hydrogen emptying process after filling is completed.
In this embodiment, since the hydrogenation unit 3 belongs to a single-inlet single-metering hydrogenation unit 3, the hydrogenation unit 3 is equipped with a first hydrogenation gun 18 and a second hydrogenation gun 19, the model of the first hydrogenation gun 18 is TK16, the model of the second hydrogenation gun 19 is TK25, hydrogen can be respectively filled into a logistics vehicle and a bus vehicle, pressure regulation of hydrogen filling into the hydrogenation unit 3 can be realized through the pressure regulating valve 20 in the hydrogenation unit 3, it is ensured that the filling process meets the relevant hydrogen specification requirements, and through control of the first pneumatic switch valve 21, the second pneumatic switch valve 22 and the evacuation pneumatic switch valve 23 in the hydrogenation unit 3, respective control of two guns of the hydrogenation unit 3 and a completed hydrogen emptying process can be realized.
It is understood that the model of the first hydrogenation gun 18 mentioned above is not limited to TK16 in the embodiments of the present application, for example, the model of the first hydrogenation gun 18 may also be TK17 or TK 25. Similarly, the model of the second hydrogenation gun 19 mentioned above is not limited to TK25 in the embodiments of the present application, for example, the model of the second hydrogenation gun 19 may also be TK17 or TK16, but is not limited thereto.
Furthermore, wade hydrogen sled unit 2 still includes nitrogen gas explosion suppression system 24, nitrogen gas explosion suppression system 24 comprises nitrogen gas collection check 25, nitrogen gas pipeline 26 and nitrogen gas explosion suppression nozzle 27, nitrogen gas explosion suppression nozzle 27 is used for to the hydrogenation station wade nitrogen gas in the hydrogen sled release to reach the effect of diluting hydrogen concentration and putting out a fire.
In this embodiment, the nitrogen pipeline 26 is arranged on the nitrogen container grid 25, the output end of the nitrogen pipeline 26 is provided with the nitrogen explosion suppression nozzle 27, and the nitrogen explosion suppression nozzle 27 is used for releasing nitrogen in the hydrogen prying machine of the hydrogen station so as to achieve the effects of diluting the hydrogen concentration and extinguishing fire.
Further, the pressurization module 10 and the hydrogenation machine 3 both further comprise a filter, a mass flow meter temperature transmitter, a pressure transmitter, a safety valve, a manual stop valve and an electromagnetic valve, wherein the filter is used for filtering impurities in hydrogen and nitrogen which are input to the end of the hydrogenation machine 3; the mass flow meter is used for counting the mass of the hydrogen filled into the gas cylinder by the hydrogenation machine 3; the temperature transmitter and the pressure transmitter are used for measuring the pressure and the temperature in the hydrogen adding pipeline; the safety valve is used for preventing emergency pressure relief after the pressure of the hydrogen pipeline is over-pressurized; the manual stop valve is used for cutting off the hydrogen pipeline or the nitrogen pipeline; the solenoid valve is used for controlling the inlet and outlet of the nitrogen pipeline so as to control the switch of the pneumatic valve.
In the embodiment, the filter is used for filtering impurities in hydrogen and nitrogen which are input to the 3 end of the hydrogenation machine; the mass flow meter is used for counting the mass of the hydrogen filled into the gas cylinder by the hydrogenation machine 3; the temperature transmitter and the pressure transmitter are used for measuring the pressure and the temperature in the hydrogen adding pipeline; the safety valve is used for preventing emergency pressure relief after the pressure of the hydrogen pipeline is over-pressurized; the manual stop valve is used for cutting off the hydrogen pipeline or the nitrogen pipeline; the solenoid valve is used for controlling the inlet and outlet of the nitrogen pipeline so as to control the switch of the pneumatic valve.
Further, a control system for hydrogen switches still includes non-hydrogen sled unit, is provided with the cooling water set on the non-hydrogen sled unit, still be provided with heat exchanger 28 and manometer on the pressure boost module 10, heat exchanger 28 with compressor unit 16 is corresponding, the cooling water set with heat exchanger 28 all is used for the cooling to hydrogen, and the manometer is used for artifical nitrogen gas replacement, the artifical observation of hydrogen replacement in-process.
In the embodiment, in the hydrogen filling process, because the joule-thomson effect generates temperature rise, a water chiller is designed in the non-hydrogen skid, and through a cooling water pipeline, cooling water with the temperature of about 7 ℃ can be provided for the pressurization module 10 for cooling the hydrogen temperature (the heat exchanger 28 is arranged at the outlet of each compressor of the compressor unit 16, the heat exchanger 28 is used for cooling the hydrogen, the heat exchanger 28 is arranged at the inlet of each compressor of the compressor unit 16, and is used for cooling the hydrogen before flat gas and compression), in addition, the cooling water is also used for cooling the oil temperature of the hydraulic oil pump in the hydrogen skid, when the compressor is started, the hydraulic oil can generate temperature rise due to repeated work, at the moment, the oil temperature can be maintained in the working temperature range through the cooling water, and the normal work of the whole set of equipment is ensured, the pressure gauge is used for manual observation in the process of manual nitrogen replacement and hydrogen replacement.
Further, the compressor unit 16 is composed of three first hydraulic piston compressors 29 and two second hydraulic piston compressors 30.
In the present embodiment, the compressor unit 16 is composed of three first hydraulic-driven piston compressors 29 and two second hydraulic-driven piston compressors 30, so that two-stage supercharging is performed, and the hydrogen pressure can reach 45MPa or 90 MPa. It is understood that the structure of the compressor unit 16 in the embodiment of the present application may include, but is not limited to, three first liquid-driven piston compressors 29 and two second liquid-driven piston compressors 30 as mentioned above, and may also include, for example, m first liquid-driven piston compressors 29 and n second liquid-driven piston compressors 30, where m and n may be positive integers, and are not limited thereto.
Further, the pressurization module 10 further comprises a high-pressure hydrogen discharge air-operated valve 31, wherein the high-pressure hydrogen discharge air-operated valve 31 is located between the high-pressure hydrogen outlet air-operated valve 17 and the buffer tank module 11.
In this embodiment, when inside hydrogen replacement, nitrogen gas replacement or emergency evacuation of pressure boost module 10, open high-pressure hydrogen evacuation pneumatic valve 31 discharges hydrogen or nitrogen gas in to the environment, pipe connection has whole station evacuation pipeline behind high-pressure hydrogen evacuation pneumatic valve 31 to finally with wade the blow-down pipe connection of the band elimination firearm on hydrogen sled top for the gaseous evacuation of whole station of hydrogen station.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. A control system for hydrogen switching, the control system comprising: unload gas column unit, wade hydrogen sled unit, high-pressure hydrogen storage tank and hydrogenation machine, unload gas column unit wade hydrogen sled unit high-pressure hydrogen storage tank with loop through the tube coupling between the hydrogenation machine, wherein:
the column unit of unloading is including main column, reserve column and hydrogen pipeline of unloading, main column with the input of reserve column of unloading is equallyd divide and is do not connected through a hydrogen hose and a hydrogen tube bank formula container, the one end of hydrogen pipeline with the hydrogen outlet valve intercommunication of reserve column of unloading, the other end of hydrogen pipeline with the hydrogen outlet pneumatic valve intercommunication of main column of unloading, and be located the mass flow meter's of main column of unloading front end, main column of unloading with all be provided with pipeline control module on the reserve column of unloading, pipeline control module is used for control main column of unloading with the circulation of the hydrogen of reserve column of unloading.
2. The control system for hydrogen gas switching according to claim 1,
the pipeline control module comprises a manual control ball valve and a one-way valve, the one-way valve is used for preventing hydrogen from flowing back to the hydrogen tube bundle to be dragged, and the manual control ball valve is used for controlling circulation of the hydrogen.
3. The control system for hydrogen gas switching according to claim 1,
wade hydrogen sled unit and include pressure boost module, buffer tank module and high-pressure hydrogen outlet valve, pressure boost module with through middling pressure hydrogen pipeline intercommunication between the hydrogen outlet valve of main gas column of unloading, pressure boost module with be provided with between the high-pressure hydrogen outlet valve the buffer tank module, high-pressure hydrogen outlet valve with hydrogenation machine module pipe connection, the buffer tank module is used for making the high-pressure hydrogen after the warp compresses export extremely the hydrogenation machine.
4. A control system for hydrogen gas switching according to claim 3,
the pressurization module includes compressor hydrogen inlet valve, compressor bypass valve, compressor main way admission valve and compressor unit, the one end of compressor main way admission valve is provided with compressor hydrogen inlet valve, the other end of compressor main way admission valve is provided with the compressor unit, compressor hydrogen inlet valve through middling pressure hydrogen pipeline with the hydrogen outlet valve intercommunication of main gas column of unloading, the output of compressor unit with buffer tank module intercommunication, compressor hydrogen inlet valve with be provided with between the compressor main way admission valve the compressor bypass valve, the front end of high pressure hydrogen outlet valve is provided with high pressure hydrogen export pneumatic valve, the compressor bypass valve with high pressure hydrogen export pneumatic valve pipeline intercommunication.
5. The control system for hydrogen gas switching according to claim 1,
the hydrogenation machine is a single-air-inlet single-metering hydrogenation machine, the hydrogenation machine comprises a first hydrogenation gun, a second hydrogenation gun, a pressure regulating valve, a first pneumatic switch valve, a second pneumatic switch valve and an emptying pneumatic switch valve, the pressure regulating valve is used for regulating the pressure of hydrogen filling of the hydrogenation machine, the first pneumatic switch valve and the second pneumatic switch valve are used for respectively controlling the first hydrogenation gun and the second hydrogenation gun, and the emptying pneumatic switch valve is used for discharging the hydrogen after filling is completed.
6. The control system for hydrogen gas switching according to claim 1,
wade hydrogen sled unit still includes nitrogen gas explosion suppression system, nitrogen gas explosion suppression system comprises nitrogen gas collection dress check, nitrogen gas pipeline and nitrogen gas explosion suppression nozzle, nitrogen gas explosion suppression nozzle is used for control the nitrogen gas pipeline is to release nitrogen gas in the wading hydrogen sled unit.
7. A control system for hydrogen gas switching according to claim 5,
the model of the first hydrogenation gun is TK 16.
8. A control system for hydrogen gas switching according to claim 5,
the model of the second hydrogenation gun is TK 25.
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Application publication date: 20220524 |