CN114738334B - Control method of hydrogen compressor control system based on multistage hydraulic drive - Google Patents
Control method of hydrogen compressor control system based on multistage hydraulic drive Download PDFInfo
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- CN114738334B CN114738334B CN202210281598.0A CN202210281598A CN114738334B CN 114738334 B CN114738334 B CN 114738334B CN 202210281598 A CN202210281598 A CN 202210281598A CN 114738334 B CN114738334 B CN 114738334B
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- compression oil
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- 239000001257 hydrogen Substances 0.000 title claims abstract description 78
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 78
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000006835 compression Effects 0.000 claims abstract description 139
- 238000007906 compression Methods 0.000 claims abstract description 139
- 239000007789 gas Substances 0.000 claims abstract description 26
- 239000000446 fuel Substances 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 abstract description 10
- 238000005984 hydrogenation reaction Methods 0.000 abstract description 9
- 239000007788 liquid Substances 0.000 abstract description 5
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 43
- 230000032683 aging Effects 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010725 compressor oil Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/161—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B25/00—Multi-stage pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
- F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
- F04B37/12—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/002—Hydraulic systems to change the pump delivery
-
- 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
- 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
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/06—Controlling or regulating of parameters as output values
- F17C2250/0605—Parameters
- F17C2250/0631—Temperature
-
- 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
- F17C2260/02—Improving properties related to fluid or fluid transfer
- F17C2260/023—Avoiding overheating
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a control system and a method for a multistage hydraulic drive hydrogen compressor, wherein the control system comprises the following steps: the compression oil cylinders comprise a plurality of primary compression oil cylinders and a plurality of secondary compression oil cylinders, and each primary compression oil cylinder and each secondary compression oil cylinder are arranged in series through a gas pipeline; the air supply source is used for independently providing power for the primary compression oil cylinder and the secondary compression oil cylinder respectively; the first heat exchangers are respectively connected in series between the primary compression cylinder and the secondary compression cylinder; the hydraulic station is characterized in that a first-stage reversing valve and a first-stage compression overflow valve are also connected in series between each first-stage compression oil cylinder and a corresponding access port of the hydraulic station, and a second-stage reversing valve and a second-stage compression overflow valve are also connected in series between each second-stage compression oil cylinder and a corresponding access port of the hydraulic station; and the gas utilization device is connected to the tail end of the secondary compression cylinder. According to the invention, the displacement of the compressor is dynamically regulated according to the actual working condition requirement so as to adapt to various different working conditions, the operation efficiency of the liquid-driven compressor is improved, and the stable operation of hydrogenation facilities is ensured.
Description
Technical Field
The invention relates to the technical field of hydrogen compressors, in particular to a control method of a hydrogen compressor control system based on multistage hydraulic driving.
Background
In the existing hydrogenation station application, the gas compressor is mostly driven by conventional hydraulic pressure, is generally single-stage compression or single-cylinder double-stage compression, the displacement of the compressor is fixed under the condition of unchanged external conditions, and the displacement of the compressor is passively changed according to the inlet pressure of the compressor in the working process of the compressor.
In addition, in the hydrogen preparation hydrogenation integration station, when filling the hydrogen storage bottle group in the station, because the hydrogen stock in the station is also dynamic change, when the hydrogen source in the station is sufficient, the discharge capacity of conventional compressor can increase, fills the speed and becomes fast, also can cause the super temperature of the hydrogen storage bottle group in the station, and the hydrogen storage bottle group works under high temperature for a long time, and the hydrogen embrittlement phenomenon takes place more easily for the bottle group.
Disclosure of Invention
The invention aims to solve the technical problems that the prior hydrogen compressor cannot realize the maximization of equipment utilization rate and the easy occurrence of over-temperature of hydrogen filling in the background art, thereby providing a control method of a hydrogen compressor control system based on multistage hydraulic driving.
In order to solve the above problems, the present invention provides a multi-stage hydraulically driven hydrogen compressor control system, comprising:
the compression oil cylinders comprise a plurality of primary compression oil cylinders and a plurality of secondary compression oil cylinders which are in one-to-one correspondence with each primary compression oil cylinder, and each primary compression oil cylinder and each secondary compression oil cylinder are arranged in series through a gas pipeline;
the air supply source is used for independently providing power for the primary compression oil cylinder and the secondary compression oil cylinder respectively;
the first heat exchangers are respectively connected in series between the primary compression oil cylinder and the secondary compression oil cylinder;
the hydraulic station is provided with a plurality of inlets, a first-stage reversing valve and a first-stage compression overflow valve are further connected in series between each first-stage compression oil cylinder and the corresponding inlet of the hydraulic station, and a second-stage reversing valve and a second-stage compression overflow valve are further connected in series between each second-stage compression oil cylinder and the corresponding inlet of the hydraulic station;
and the gas utilization device is connected to the tail end of the secondary compression cylinder.
Further, the system also comprises a second heat exchanger, wherein the second heat exchanger is connected in series between each secondary compression oil cylinder and the gas utilization equipment.
Further, the gas utilization device comprises an in-station hydrogen storage container and/or a fuel cell vehicle.
The invention also provides a control method of the multistage hydraulic drive hydrogen compressor, which comprises the following steps:
S 1 : the hydrogen compressor obtains a filling instruction, starts working and records the initial temperature of the hydrogen storage bottle group of the gas equipmentInitial pressure->And target pressure->；
S 2 : closing all the primary compression overflow valves and the secondary compression overflow valves, reversing all the primary reversing valves and the secondary reversing valves, and starting the hydrogen compressor to perform external compression work output;
S 3 : at intervals ofCollecting the temperature of the hydrogen storage bottle group of the gas utilization equipment>And pressure->And calculates the temperature difference of the hydrogen storage bottle group +.>And pressure difference>；
S 4 : judgment formulaIs it true? If so, go to step S 5 The method comprises the steps of carrying out a first treatment on the surface of the If not, go to step S 6 ；
S 5 : judging whether all the primary compression overflow valves and the secondary compression overflow valves are opened or not;
S 6 : and judging whether all the primary compression relief valves and the secondary compression relief valves are closed.
Further, in step S 5 The specific steps of judging whether all the primary compression relief valves and the secondary compression relief valves are opened include:
S 51 : if not, one of the first-stage compression overflow valves is opened;
S 52 : duration of timeAfter that, the formula +.>Is it true? If so, go to step S 53 The method comprises the steps of carrying out a first treatment on the surface of the If not, go to step S 6 ；
S 53 : opening one of the two-stage compression relief valves and transitioning to step S 4 。
Further, in step S 6 The specific step of judging whether all overflow valves are closed comprises the following steps:
S 61 : if not, closing one of the first-stage compression overflow valves;
S 62 : duration T 1 Then, the temperature of the hydrogen storage bottle group of the gas equipment is collected again' and pressure->' and calculating the temperature difference of the hydrogen storage bottle group +.>And pressure difference>；
S 63 : judgment formulaIs it true? If so, go to step S 5 The method comprises the steps of carrying out a first treatment on the surface of the If not, go to step S 64 ；
S 64 : closing one of the two-stage compression relief valves and turning to step S 3。
Further, the time isThe range of the value of (2) is 8-12 seconds.
Compared with the prior art, the multistage hydraulic drive hydrogen compressor control system has the following beneficial effects:
1. through the multi-cylinder of the liquid-driven gas compressor, the compressor is provided with a plurality of first-stage compression cylinders and a plurality of second-stage compression cylinders, each cylinder can be independently started and stopped, the utilization rate of equipment can be maximized through the combination of the two-stage cylinders, when the air inlet pressure in a station is lower, the number of the second-stage cylinders is reduced, the second-stage compression ratio is prevented from being overlarge, and overtemperature is avoided; when the air inlet pressure in the station is high, the number of the primary oil cylinders can be reduced, and the excessive high primary exhaust pressure is prevented; when the air inlet pressure in the station is relatively warm, the quantity of the primary and secondary oil cylinders can be increased or reduced, so that flow regulation is realized, and the exhaust quantity of the compressor is changed; when the air inlet pressure in the station is in a low working condition, the three secondary oil cylinders are fully opened, so that the filling speed is increased; when the air inlet pressure in the station is relatively high, the number of the cylinders of the primary compressor and the secondary compressor is reduced, the displacement of the compressors is reduced, and the hydrogen storage bottle group in the hydrogenation station is prevented from being charged with over-temperature; the aging speed of the sealing element of the oil cylinder can be reduced through the alternate use of the oil cylinders; when the compressor is prized, the temperature in the fuel cell vehicle can be related, the exhaust flow of the compressor can be automatically adjusted according to the temperature rise speed in the vehicle, and the final hydrogen filling overtemperature is prevented on the premise of ensuring the hydrogenation speed.
2. Through the system, the work of the liquid drive compressor can be more flexible, the displacement of the compressor can be dynamically regulated according to the requirements of actual working conditions, so that the liquid drive compressor is suitable for various different working conditions, the safety of rear-end equipment is ensured, the running efficiency of the liquid drive compressor can be effectively improved, and the stable running of hydrogenation facilities is ensured.
Drawings
FIG. 1 is a schematic diagram of a control system for a multi-stage hydraulically driven hydrogen compressor in accordance with an embodiment of the present invention;
fig. 2 is a flow chart of a control method of a multistage hydraulic driving hydrogen compressor according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and, as per the examples, may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, or can be communicated inside the two components, or can be connected wirelessly or in a wired way. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The embodiment of the invention provides a control system of a multistage hydraulic drive hydrogen compressor, which comprises a two-stage compression oil cylinder, an air supply source, a plurality of first heat exchangers, a hydraulic station and air utilization equipment, wherein:
the compression cylinder comprises a plurality of primary compression cylinders and a plurality of secondary compression cylinders corresponding to each primary compression cylinder one by one, wherein each primary compression cylinder and the corresponding secondary compression cylinder are arranged in series through a gas pipeline, and thus, after the air source is compressed through the primary compression cylinder, the air source enters the corresponding secondary compression cylinder through the gas pipeline for further compression.
And the air supply source is used for independently providing power for the primary compression oil cylinder and the secondary compression oil cylinder respectively, and in the embodiment, the air supply source is a hydrogen long tube trailer. As the multi-purpose hydrogen long tube trailer in the hydrogenation station is used as an origin air supply source to supply air to the station, and the hydrogen long tube trailer is assembled by a plurality of bottle-type hydrogen storage pressure containers and then is arranged on the automobile trailer for transporting high-pressure hydrogen, the transportation and the transportation are convenient, and the storage is easy.
And the first heat exchangers are respectively connected in series between the primary compression oil cylinder and the secondary compression oil cylinder. Thus, in the embodiment, the first heat exchangers are three in number, and the air source enters the second-stage compression oil cylinder after being compressed by each first-stage compression oil cylinder and then cooled by the heat exchangers, so that the volume can be further reduced, the compression amount can be improved, and the use safety can be ensured.
The hydraulic station is provided with a plurality of inlets, a first-stage reversing valve and a first-stage compression overflow valve are further connected in series between each first-stage compression oil cylinder and the corresponding inlet of the hydraulic station, and a second-stage reversing valve and a second-stage compression overflow valve are further connected in series between each second-stage compression oil cylinder and the corresponding inlet of the hydraulic station.
Therefore, a reversing valve and an overflow valve are arranged between the hydraulic station and the compression cylinder, and the number of the primary compression cylinder and the secondary compression cylinder is accessed through the control of the reversing valve and the overflow valve.
For example: when the air inlet pressure in the station is low, the number of the secondary compression cylinders can be reduced, the secondary compression ratio is prevented from being too large, and the temperature is easy to exceed.
When the air inlet pressure is higher, the number of the first-stage compression cylinders can be reduced, and the excessive high first-stage exhaust pressure is prevented.
When the air inlet pressure is relatively warm, the quantity of the primary compression oil cylinder and the secondary compression oil cylinder can be increased or reduced, so that flow regulation is realized, and the displacement of the compressor is changed.
When the air inlet pressure is in a low working condition, the three secondary compression cylinders are fully opened, the filling speed is increased, the number of the primary compression cylinders and the secondary compression cylinders is reduced when the air inlet pressure is relatively high, the displacement of the compressor is reduced, and the hydrogen storage bottle group in the hydrogenation station is prevented from being filled with over-temperature.
The aging speed of the sealing element of the oil cylinder can be reduced through the alternate use of the oil cylinders; when the compressor is prized, the temperature in the fuel cell vehicle can be related, the exhaust flow of the compressor can be automatically adjusted according to the temperature rise speed in the vehicle, and the final hydrogen filling overtemperature is prevented on the premise of ensuring the hydrogenation speed.
And the gas utilization device is connected to the tail end of the secondary compression cylinder and is used as hydrogen utilization equipment for final use.
Specifically, referring to fig. 1, in the embodiment of the present invention, the control system of the hydrogen compressor further includes a second heat exchanger, where the second heat exchanger is connected in series between each secondary compression cylinder and the gas consuming device, so as to cool the gas compressed by the primary compression cylinder, thereby ensuring safety.
In particular, referring to fig. 1, in an embodiment of the present invention, the gas-using apparatus includes an in-station hydrogen storage container and/or a fuel cell vehicle.
When the hydrogen adding station is a hydrogen preparing and adding integrated workstation, when the hydrogen adding station is used for preparing hydrogen, the gas using equipment is an in-station hydrogen storage container, the hydrogen storage container is composed of a plurality of hydrogen storage bottle groups, when the in-station hydrogen storage bottle groups are filled, as the in-station hydrogen storage quantity is dynamically changed, when the in-station hydrogen is sufficient in origin, the discharge capacity of a conventional compressor can be increased, the filling speed is increased, thus the in-station hydrogen storage bottle groups are also caused to be over-heated, the hydrogen storage bottle groups work at high temperature for a long time, and the hydrogen embrittlement phenomenon of the bottle groups is easier to occur. At this time, the number of the access cylinders is controlled by the control system of the hydrogen compressor, so that the hydrogen embrittlement phenomenon can be avoided.
Referring to fig. 1, in this embodiment, the whole control system is composed of a hydraulic station, three primary compression cylinders, three secondary compression cylinders, six reversing valves of the compression cylinders and six overflow valves, and the air source is compressed by the primary compression cylinders, cooled by the heat exchanger, enters the secondary compression cylinders, cooled by the heat exchanger, and enters the air consuming device or container.
When the pressure relief valve on the oil circuit corresponding to the compression cylinder is opened, the oil pressure of the circuit is discharged, the working is stopped, and no exhaust is carried out; when the pressure release valve on the oil path is closed, the compression cylinder of the oil path continues to resume working and is pressurized outwards.
The exhaust capacity of the compressor can be adjusted by opening and closing the two-stage compression oil cylinders and controlling the number of the two-stage compression oil cylinders, and the specific control method is shown in fig. 2:
as shown in fig. 2, the present invention further provides a control method of a multistage hydraulic driving hydrogen compressor, comprising the following steps:
S 1 : the hydrogen compressor obtains a filling instruction, starts working and records the initial temperature of the hydrogen storage bottle group of the gas equipmentInitial pressure->And target pressure->；
S 2 : closing all the primary compression overflow valves and the secondary compression overflow valves, reversing all the primary reversing valves and the secondary reversing valves, and starting the hydrogen compressor to perform external compression work output;
S 3 : at intervals ofCollecting the temperature of the hydrogen storage bottle group of the gas utilization equipment>And pressure->And calculates the temperature difference of the hydrogen storage bottle group +.>And pressure difference>；
The temperature and the pressure of the back-end equipment are collected in real time in the working process of the compressor, and whether the two-stage oil cylinders of the compressor are opened or closed is calculated and judged through algorithm comparison.
S 4 : judgment formulaIs it true? If so, go to step S 5 The method comprises the steps of carrying out a first treatment on the surface of the If not, go to step S 6 ；
S 5 : judging whether all the primary compression overflow valves and the secondary compression overflow valves are opened or not;
S 6 : and judging whether all the primary compression relief valves and the secondary compression relief valves are closed.
Further, in step S 5 The specific steps of judging whether all the primary compression relief valves and the secondary compression relief valves are opened include:
S 51 : if not, one of the first-stage compression overflow valves is opened;
S 52 : duration of timeAfter that, the formula +.>Is it true? If so, go to step S 53 The method comprises the steps of carrying out a first treatment on the surface of the If not, go to step S 6 ；
S 53 : opening one of the two-stage compression relief valves and transitioning to step S 4 。
Further, in step S 6 The specific step of judging whether all overflow valves are closed comprises the following steps:
S 61 : if not, closing one of the first-stage compression overflow valves;
S 62 : duration T 1 Then, the temperature of the hydrogen storage bottle group of the gas equipment is collected again' and pressure->' and calculating the temperature difference of the hydrogen storage bottle group +.>And pressure difference>；
S 63 : judgment formulaIs it true? If so, go to step S 5 The method comprises the steps of carrying out a first treatment on the surface of the If not, go to step S 64 ；
S 64 : closing one of the two-stage compression relief valves and turning to step S 3。
Further, the time isThe range of the value of (2) is 8-12 seconds. As the present embodimentTime +.>Taking 10 seconds to reach the optimal utilization state.
When the air source in the station is sufficient, the pressure discharge of the compressor is increased, overtemperature is easily caused, and at the moment, the control system stops the work of the corresponding cylinders by opening the overflow valves of the primary compression cylinder and the secondary compression cylinder one by one, so that the displacement of the compressor is reduced.
When the temperature rising trend of the rear-end hydrogen storage bottle group or the fuel cell vehicle is reduced and overtemperature is not caused, the control system can automatically close the corresponding overflow valves one by one, so that the displacement of the compressor is gradually increased, and the filling speed is improved. By the adjusting mode, the compressor can maintain the optimal displacement and improve the filling speed on the premise of ensuring that the rear-end equipment is not overtemperature.
In addition, in the working process of the compressor, when a certain compression oil cylinder fails, an overflow valve of the oil cylinder can be opened to stop the work of the oil cylinder, so that the whole compressor can still work continuously and is not stopped.
Therefore, through the adjustment of dynamic change of the compressor oil cylinder, each compression oil cylinder can work in turn, and the working mode can effectively reduce the action times of a single compression oil cylinder, so that the service life of the equipment is prolonged as a whole.
Although the present disclosure is described above, the scope of protection of the present disclosure is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of the invention.
Claims (4)
1. The control method of the hydrogen compressor control system based on the multistage hydraulic drive is characterized in that the hydrogen compressor control system based on the multistage hydraulic drive comprises the following steps:
the compression oil cylinders comprise a plurality of primary compression oil cylinders and a plurality of secondary compression oil cylinders which are in one-to-one correspondence with each primary compression oil cylinder, and each primary compression oil cylinder and each secondary compression oil cylinder are arranged in series through a gas pipeline;
the air supply source is used for independently providing power for the primary compression oil cylinder and the secondary compression oil cylinder respectively;
the first heat exchangers are respectively connected in series between the primary compression oil cylinder and the secondary compression oil cylinder;
a first-stage reversing valve and a first-stage compression overflow valve are connected in series between each first-stage compression oil cylinder and a corresponding access port of the hydraulic station, and a second-stage reversing valve and a second-stage compression overflow valve are connected in series between each second-stage compression oil cylinder and a corresponding access port of the hydraulic station;
the gas utilization device is connected to the tail end of the secondary compression cylinder and comprises an in-station hydrogen storage container and/or a fuel cell vehicle;
the second heat exchanger is connected in series between each secondary compression oil cylinder and the gas utilization equipment;
the control method comprises the following steps:
S 1 : the hydrogen compressor obtains the filling instruction to start working and records the initial temperature of the hydrogen storage bottle group of the gas equipmentInitial pressure->And target pressure->；
S 2 : closing all the primary compression overflow valves and the secondary compression overflow valves, reversing all the primary reversing valves and the secondary reversing valves, and starting the hydrogen compressor to perform external compression work output;
S 3 : at intervals ofCollecting the temperature of the hydrogen storage bottle group of the gas utilization equipment>And pressure->And calculates the temperature difference of the hydrogen storage bottle group +.>And pressure difference>；
S 4 : judgment formulaIs it true? If so, go to step S 5 The method comprises the steps of carrying out a first treatment on the surface of the If not, go to step S 6 ；
S 5 : judging whether all the primary compression overflow valves and the secondary compression overflow valves are opened or not;
S 6 : and judging whether all the primary compression relief valves and the secondary compression relief valves are closed.
2. The control method of a multistage hydraulic drive-based hydrogen compressor control system according to claim 1, characterized in that in step S 5 The specific steps of judging whether all the primary compression relief valves and the secondary compression relief valves are opened include:
S 51 : if not, one of the first-stage compression overflow valves is opened;
S 52 : duration of timeAfter that, the formula +.>Is it true? If so, go to step S 53 The method comprises the steps of carrying out a first treatment on the surface of the If not, go to step S 6 ；
S 53 : opening one of the two-stage compression relief valves and transitioning to step S 4 。
3. The control method of a multistage hydraulic drive-based hydrogen compressor control system according to claim 1, characterized in that in step S 6 The specific step of judging whether all overflow valves are closed comprises the following steps:
S 61 : if not, closing one of the first-stage compression overflow valves;
S 62 : duration T 1 Then, the temperature of the hydrogen storage bottle group of the gas equipment is collected again' and pressure->' and calculating the temperature difference of the hydrogen storage bottle group +.>And pressure difference>；
S 63 : judgment formulaIs it true? If so, go to step S 5 The method comprises the steps of carrying out a first treatment on the surface of the If not, go to step S 64 ；
S 64 : closing one of the two-stage compression relief valves and turning to step S 3。
4. The control method of a multistage hydraulic drive-based hydrogen compressor control system according to claim 1, wherein the timeThe range of the value of (2) is 8-12 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210281598.0A CN114738334B (en) | 2022-03-22 | 2022-03-22 | Control method of hydrogen compressor control system based on multistage hydraulic drive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210281598.0A CN114738334B (en) | 2022-03-22 | 2022-03-22 | Control method of hydrogen compressor control system based on multistage hydraulic drive |
Publications (2)
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| CN108757422A (en) * | 2018-05-07 | 2018-11-06 | 杰瑞石油天然气工程有限公司 | A kind of multi-stage compression unit discharge capacity adjusting method |
| CN210218052U (en) * | 2019-08-09 | 2020-03-31 | 尹智 | Electric liquid driven piston type hydrogen compressor |
| CN111765064A (en) * | 2020-07-08 | 2020-10-13 | 北京普发动力控股股份有限公司 | Quick start and stop system of hydrogen compressor |
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| CN108757422A (en) * | 2018-05-07 | 2018-11-06 | 杰瑞石油天然气工程有限公司 | A kind of multi-stage compression unit discharge capacity adjusting method |
| CN210218052U (en) * | 2019-08-09 | 2020-03-31 | 尹智 | Electric liquid driven piston type hydrogen compressor |
| CN111765064A (en) * | 2020-07-08 | 2020-10-13 | 北京普发动力控股股份有限公司 | Quick start and stop system of hydrogen compressor |
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