CN114909604A - Hydrogenation control method and device for hydrogenation station and hydrogenation station - Google Patents

Hydrogenation control method and device for hydrogenation station and hydrogenation station Download PDF

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Publication number
CN114909604A
CN114909604A CN202110184525.5A CN202110184525A CN114909604A CN 114909604 A CN114909604 A CN 114909604A CN 202110184525 A CN202110184525 A CN 202110184525A CN 114909604 A CN114909604 A CN 114909604A
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hydrogenation
gas storage
storage bottle
pressure
group
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CN202110184525.5A
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Inventor
何广利
董文平
许壮
杨康
田中辉
董辉
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China Energy Investment Corp Ltd
National Institute of Clean and Low Carbon Energy
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China Energy Investment Corp Ltd
National Institute of Clean and Low Carbon Energy
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Priority to CN202110184525.5A priority Critical patent/CN114909604A/en
Publication of CN114909604A publication Critical patent/CN114909604A/en
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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
    • F17C13/002—Details of vessels or of the filling or discharging of vessels for vessels under pressure
    • 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
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure 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
    • 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
    • F17C2205/01—Mounting arrangements
    • F17C2205/0123—Mounting arrangements characterised by number of vessels
    • F17C2205/013—Two or more 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
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/012—Hydrogen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0107—Single phase
    • F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
    • F17C2225/0107—Single phase
    • F17C2225/0123—Single phase gaseous, e.g. CNG, GNC
    • 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
    • F17C2227/0192—Propulsion of the fluid by using a working fluid
    • 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
    • F17C2227/04—Methods for emptying or filling
    • F17C2227/043—Methods for emptying or filling by pressure cascade
    • 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
    • F17C2250/0615—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
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/06—Controlling or regulating of parameters as output values
    • F17C2250/0605—Parameters
    • F17C2250/0626—Pressure
    • 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
    • F17C2250/0689—Methods for controlling or regulating
    • 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
    • F17C2250/07—Actions triggered by measured parameters
    • F17C2250/072—Action when predefined value is reached
    • 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
    • F17C2260/03—Dealing with losses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2265/00—Effects achieved by gas storage or gas handling
    • F17C2265/06—Fluid distribution
    • F17C2265/065—Fluid distribution for refuelling vehicle fuel tanks
    • 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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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The embodiment of the invention provides a hydrogenation control method and device for a hydrogenation station and the hydrogenation station, and belongs to the technical field of hydrogenation stations. The hydrogenation station comprises at least two stages of gas storage bottle groups and a hydrogenation machine, wherein the at least two stages of gas storage bottle groups comprise a first stage gas storage bottle group and a second stage gas storage bottle group, and the hydrogenation method is characterized by comprising the following steps of: controlling the hydrogenation machine to use the primary gas storage bottle group for hydrogenation; detecting the pressure and instantaneous mass flow rate of the primary group of gas storage cylinders; and when the difference between the pressure of the primary gas storage cylinder group and the pressure of a hydrogenation object is smaller than a first preset pressure difference and the instantaneous mass flow rate is smaller than a first preset mass flow rate, controlling the hydrogenation machine to use the secondary gas storage cylinder group for hydrogenation. The invention can improve the utilization rate of hydrogen and reduce the energy consumption of the compressor.

Description

Hydrogenation control method and device for hydrogenation station and hydrogenation station
Technical Field
The invention relates to a hydrogenation station, in particular to a hydrogenation control method and device for the hydrogenation station and the hydrogenation station.
Background
The hydrogenation station comprises a hydrogen source, a compressor, a gas storage cylinder group, a hydrogenation machine and the like, wherein the gas storage cylinder group is required to provide sufficient filling pressure for the hydrogenation machine. In general, when hydrogen is filled into a vehicle-mounted hydrogen storage bottle, gas is taken from low pressure to high pressure according to a gas storage bottle group, and when the pressure of hydrogen in a certain stage in the gas storage bottle group cannot maintain the pressure difference required by the filling rate of a hydrogenation machine, the next stage of the gas storage bottle group needs to be switched. In actual filling, a faster filling rate is required. In order to achieve a faster filling rate, the pressure difference between the gas cylinder group and the vehicle-mounted hydrogen storage cylinder needs to be large enough to have a large enough driving force. Then, in order to achieve a certain degree of fullness, the upper limit of the working pressure of the gas cylinder set is increased, or the volume of the gas cylinder set is increased, or the hydrogen storage pressure is increased, but these methods all result in that the utilization rate of hydrogen in the gas cylinder set is greatly reduced. Meanwhile, the compressor supplies air for the gas storage cylinder group, and the working energy consumption of the compressor is increased, so that the construction and operation costs of the hydrogenation station are increased.
Disclosure of Invention
The embodiment of the invention aims to provide a hydrogenation control method and device for a hydrogenation station and the hydrogenation station.
In order to achieve the above object, an embodiment of the present invention provides a hydrogenation control method for a hydrogenation station, where the hydrogenation station includes at least two stages of gas cylinder groups and a hydrogenation machine, the at least two stages of gas cylinder groups include a first stage gas cylinder group and a second stage gas cylinder group, and the method includes: controlling the hydrogenation machine to use the primary gas storage bottle group for hydrogenation; detecting the pressure and instantaneous mass flow rate of the primary group of gas storage cylinders; and when the difference between the pressure of the primary gas storage cylinder group and the pressure of a hydrogenation object is smaller than a first preset pressure difference and the instantaneous mass flow rate is smaller than a first preset mass flow rate, controlling the hydrogenation machine to use the secondary gas storage cylinder group for hydrogenation.
Preferably, the at least two-stage gas cylinder group further comprises a three-stage gas cylinder group, and after controlling the hydrogenation machine to use the two-stage gas cylinder group for hydrogenation, the method further comprises: detecting the pressure and instantaneous mass flow rate of the secondary gas storage cylinder group; and when the difference between the pressure of the secondary gas storage bottle group and the pressure of a hydrogenation object is smaller than a second preset pressure difference, and the instantaneous mass flow rate is smaller than a second preset mass flow rate, controlling the hydrogenation machine to use the tertiary gas storage bottle group for hydrogenation.
Preferably, the first preset pressure difference and/or the second preset pressure difference is 1-10 MPa.
Preferably, the first and/or second preset mass flow rate is 0.1-1 kg/min.
Preferably, when the hydrogenation machine is controlled to use the primary gas storage bottle group for hydrogenation, the method further comprises the following steps: when the pressure of the first-stage gas storage bottle group is smaller than the gas taking limit pressure of the gas storage bottle group, controlling the hydrogenation machine to use the second-stage gas storage bottle group for hydrogenation; when the hydrogenation machine is controlled to use the secondary gas storage cylinder group for hydrogenation, the method also comprises the following steps: and when the pressure of the secondary gas storage bottle group is smaller than the gas taking limit pressure of the gas storage bottle group, controlling the hydrogenation machine to use the tertiary gas storage bottle group for hydrogenation.
The embodiment of the invention also provides a hydrogenation control device of a hydrogenation station, the hydrogenation station comprises at least two stages of gas storage bottle groups and a hydrogenation machine, the at least two stages of gas storage bottle groups comprise a first stage gas storage bottle group and a second stage gas storage bottle group, and the device comprises: the control unit is used for controlling the hydrogenation machine to hydrogenate by using the primary gas storage bottle group; the detection unit is used for detecting the pressure and the instantaneous mass flow rate of the primary gas storage bottle group; the control unit is also used for controlling the hydrogenation machine to use the secondary gas cylinder group for hydrogenation when the difference between the pressure of the primary gas cylinder group and the pressure of a hydrogenation object is smaller than a first preset pressure difference and the instantaneous mass flow rate is smaller than a first preset mass flow rate.
Preferably, the at least two-stage gas cylinder group further comprises a three-stage gas cylinder group, and after the hydrogenation machine is controlled to use the two-stage gas cylinder group for hydrogenation, the detection unit is further used for detecting the pressure and the instantaneous mass flow rate of the two-stage gas cylinder group; the control unit is also used for controlling the hydrogenation machine to use the third-stage gas storage bottle group for hydrogenation when the difference between the pressure of the second-stage gas storage bottle group and the pressure of a hydrogenation object is smaller than a second preset pressure difference and the instantaneous mass flow rate is smaller than a second preset mass flow rate.
Preferably, when the hydrogenation machine is controlled to use the primary gas storage bottle group for hydrogenation, the control unit is further configured to: when the pressure of the first-stage gas storage bottle group is smaller than the gas taking limit pressure of the gas storage bottle group, controlling the hydrogenation machine to use the second-stage gas storage bottle group for hydrogenation; when the hydrogenation machine is controlled to use the secondary gas storage bottle group for hydrogenation, the control unit is further used for: and when the pressure of the secondary gas storage bottle group is smaller than the gas taking limit pressure of the gas storage bottle group, controlling the hydrogenation machine to use the tertiary gas storage bottle group for hydrogenation.
Preferably, the first preset pressure difference and/or the second preset pressure difference is 1-10 MPa.
The embodiment of the invention also provides a hydrogenation station, which comprises the hydrogenation control device of the hydrogenation station.
Through the technical scheme, the hydrogenation station comprises at least two stages of gas storage bottle groups and a hydrogenation machine, the at least two stages of gas storage bottle groups comprise a first stage gas storage bottle group and a second stage gas storage bottle group, and the method comprises the following steps: controlling the hydrogenation machine to use the primary gas storage bottle group for hydrogenation; detecting the pressure and instantaneous mass flow rate of the primary group of gas storage cylinders; and when the difference between the pressure of the primary gas storage cylinder group and the pressure of a hydrogenation object is smaller than a first preset pressure difference and the instantaneous mass flow rate is smaller than a first preset mass flow rate, controlling the hydrogenation machine to use the secondary gas storage cylinder group for hydrogenation. The filling time and the filling degree can be accurately controlled, the hydrogen of a hydrogenation object is ensured not to be over-temperature, not over-pressure and not over-filled in the filling process, meanwhile, the working pressure of the gas storage cylinder group can be reduced to a greater degree, the hydrogen utilization rate is improved, and the energy consumption of a compressor is reduced.
Additional features and advantages of embodiments of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention and not to limit the embodiments of the invention. In the drawings:
fig. 1 is a flowchart of a hydrogenation control method of a hydrogenation station according to an embodiment of the present invention;
FIG. 2 is a flow chart of a method for controlling hydrogenation in a hydrogenation station according to another embodiment of the present invention;
FIG. 3A is a schematic view of the filling process of example 1;
FIG. 3B is a schematic illustration of the filling process of comparative example 1;
FIG. 4A is a schematic view of the filling process of embodiment 2;
FIG. 4B is a schematic illustration of the filling process of comparative example 2;
fig. 5 is a block diagram of a hydrogenation control device of a hydrogenation station according to an embodiment of the present invention.
Description of the reference numerals
1 control unit 2 detection unit
Detailed Description
The following describes in detail embodiments of the present invention with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration and explanation only, not limitation.
Generally, the hydrogenation station comprises at least one hydrogen source, at least one compressor, at least two-stage gas cylinder groups and at least one hydrogenation machine, wherein an air inlet of the at least one compressor is connected with the hydrogen source, an outlet of the at least one compressor is connected with the at least two-stage gas cylinder groups and used for compressing hydrogen gas into the at least two-stage gas cylinder groups, and the hydrogenation machine can fill the hydrogen gas in the at least two-stage gas cylinder groups into a hydrogenation object.
Fig. 1 is a flowchart of a hydrogenation control method of a hydrogenation station according to an embodiment of the present invention. As shown in fig. 1, the hydrogenation station includes at least two stages of gas cylinder groups and a hydrogenation machine, the at least two stages of gas cylinder groups include a first stage gas cylinder group and a second stage gas cylinder group, and the method includes:
step S11, controlling the hydrogenation machine to hydrogenate by using the primary gas storage bottle group;
for example, the primary and secondary cylinder banks are determined by the initial pressure of the hydrogenation initiation cylinder bank, with the higher the initial pressure, the greater the number of hydrogen cylinder banks. For example, the pressures of the two-stage gas cylinder set at the beginning of hydrogenation are respectively 30MPa and 45MPa, then the 30MPa hydrogen storage cylinder is the first-stage gas cylinder set, and the 45MPa hydrogen storage cylinder is the second-stage gas cylinder set. When hydrogenation is carried out, the primary grade and the secondary grade of the hydrogen storage bottle group are firstly divided according to the pressure value, and the hydrogenation machine preferentially uses the primary gas storage bottle group for hydrogenation.
Step S12, detecting the pressure and the instantaneous mass flow rate of the primary gas storage bottle group;
for example, during the hydrogenation process using the primary gas cylinder set, the pressure and instantaneous mass flow rate of the primary gas cylinder set are detected in real time for comparison.
And step S13, controlling the hydrogenation machine to use the secondary gas cylinder group for hydrogenation when the difference between the pressure of the primary gas cylinder group and the pressure of a hydrogenation object is smaller than a first preset pressure difference and the instantaneous mass flow rate is smaller than a first preset mass flow rate.
For example, the first predetermined pressure differential may be 1 to 10MPa, more specifically, for example, 3MPa, and then when the difference between the pressure of the primary gas cylinder group and the pressure of the hydrogenation target (for example, an on-board hydrogen storage system) is less than 3MPa, the hydrogenation is continued until the instantaneous mass flow rate is less than the first predetermined mass flow rate (which may be 0.1 to 1kg/min, more specifically, for example, 0.4kg/min), at which time the hydrogenation machine is controlled to perform the hydrogenation using the secondary gas cylinder group. The pressure of the second-level gas storage bottle group can be the same as that of the first-level gas storage bottle group, and can also be higher than that of the first-level gas storage bottle group.
In addition, in the process of hydrogenation by using the primary gas storage bottle group, if the pressure of the primary gas storage bottle group is less than the gas taking limit pressure of the gas storage bottle group, the hydrogenation machine can be directly controlled to use the secondary gas storage bottle group for hydrogenation.
The manner in which the first predetermined pressure differential and the first predetermined mass flow rate are determined may be as follows:
the first predetermined pressure differential is determined by the following equation:
ΔP＝a·(APRR) 3 +b·(APRR) 2 +c·APRR+d；
Δ P is a first predetermined pressure difference in MPa;
APRR is average pressure increasing rate of hydrogenation controlled by a hydrogenation machine, and unit is MPa/min;
the coefficients a, b, c and d are related to the volume of the on-board hydrogen storage system and the resistance of the hydrogenation pipeline, and can be calibrated in advance through experiments.
Wherein,
Figure BDA0002942484710000061
P final the target pressure of the hydrogenation machine after filling is unit MPa;
P start the pressure of a vehicle-mounted hydrogen storage system at the beginning of filling the hydrogenation machine is unit MPa;
dt is the fill time in min taken to expect the target pressure to be reached;
generally speaking, the larger the preset mass flow rate is, the shorter the filling time of the vehicle-mounted hydrogen storage system is, but the utilization rate of the hydrogen storage system in the hydrogen station is reduced; conversely, the smaller the preset mass flow rate, the longer the on-board hydrogen storage system fill time, but the increased in-station hydrogen storage system utilization.
The first preset mass flow rate is determined by the following equation:
F limit ＝Max[A×F 0 ,0.1]；
wherein F limit Is a preset mass flow rate in kg/min;
F 0 is the instantaneous mass flow rate in kg/min which occurs when the filling process is equal to the preset pressure difference;
a is related to factors such as the capacity of a hydrogen storage cylinder group, the volume of a vehicle-mounted hydrogen storage system, the pipeline resistance, the allowable filling time and the like, and can be calibrated in advance through experiments, for example, 0.1-0.9.
Fig. 2 is a flowchart of a hydrogenation control method of a hydrogenation station according to another embodiment of the present invention. As shown in fig. 2, the at least two-stage gas cylinder group further includes a three-stage gas cylinder group, and the method includes:
step S21, controlling the hydrogenation machine to hydrogenate by using the primary gas storage bottle group;
step S22, detecting the pressure and the instantaneous mass flow rate of the primary gas storage bottle group;
and step S23, controlling the hydrogenation machine to use the secondary gas cylinder group for hydrogenation when the difference between the pressure of the primary gas cylinder group and the pressure of a hydrogenation object is smaller than a first preset pressure difference and the instantaneous mass flow rate is smaller than a first preset mass flow rate.
For example, the embodiments of steps S21-S23 are similar to the above, and are not repeated here.
Step S24, detecting the pressure and the instantaneous mass flow rate of the secondary gas storage bottle group;
for example, during hydrogenation using the secondary gas cylinder group, the pressure and instantaneous mass flow rate of the secondary gas cylinder group can also be detected in real time to facilitate subsequent comparison.
And step S25, controlling the hydrogenation machine to use the three-stage gas storage bottle group for hydrogenation when the difference between the pressure of the two-stage gas storage bottle group and the pressure of the hydrogenation object is smaller than a second preset pressure difference and the instantaneous mass flow rate is smaller than a second preset mass flow rate.
For example, the second predetermined pressure differential can likewise be 1-10MPa, more specifically, e.g., 3MPa, and when the difference between the pressure of the secondary gas cylinder set and the pressure of the object of hydrogenation (e.g., an on-board hydrogen storage system) is less than 3MPa, hydrogenation is still continued until the instantaneous mass flow rate is less than the second predetermined mass flow rate (which can be 0.1-1kg/min, more specifically, e.g., 0.3kg/min), at which time the hydrogenation engine is controlled to use the tertiary gas cylinder set for hydrogenation. The pressure of the third-stage gas storage bottle group can be the same as that of the first-stage gas storage bottle group and that of the second-stage gas storage bottle group, and can also be higher than that of the first-stage gas storage bottle group and that of the second-stage gas storage bottle group. The second predetermined pressure difference and the second predetermined mass flow rate can also be obtained by a similar method as the determination of the first predetermined pressure difference and the first predetermined mass flow rate, and are not described herein again.
In addition, in the process of hydrogenation by using the secondary gas storage bottle group, if the pressure of the secondary gas storage bottle group is less than the gas taking limit pressure of the gas storage bottle group, the hydrogenation machine can be directly controlled to use the tertiary gas storage bottle group for hydrogenation.
Specific examples and comparative examples using the control method of the present invention are provided below:
example 1: the total hydrogen storage capacity in the hydrogen filling station is 510kg, and the pressure of a three-level equal-capacity hydrogen storage system, namely a first-level gas storage cylinder group, a second-level gas storage cylinder group and a third-level gas storage cylinder group is 45 MPa. According to the sequence of gas taking from the gas storage cylinder groups and the filling process requirements, the gas taking limit pressures of the primary gas storage cylinder group, the secondary gas storage cylinder group and the tertiary gas storage cylinder group are respectively set to be 20MPa, 20MPa and 20 MPa. The first preset pressure difference and the second preset pressure difference are both 3 MPa. The first predetermined mass flow rate is 0.6kg/min, the second predetermined mass flow rate is 0.6kg/min, and a third predetermined mass flow rate (i.e. the corresponding predetermined mass flow rate when using the three-stage gas cylinder set for hydrogenation, generally speaking, the mass flow rate of the three-stage gas cylinder set will not be lower than the third predetermined mass flow rate before filling the hydrogenation object) is 0.4 kg/min. When a hydrogen fuel cell automobile enters a station to fill hydrogen, the primary gas storage cylinder group is preferentially distributed to fill, when the difference between the pressure of the primary gas storage cylinder group and the pressure of the vehicle-mounted hydrogen storage system is lower than 3MPa, the filling is continued until the mass flow rate is lower than 0.6kg/min or the pressure of the primary gas storage cylinder group is lower than 20MPa, the secondary gas storage cylinder group and the tertiary gas storage cylinder group are sequentially distributed to fill according to the control strategy until the vehicle-mounted hydrogen storage system reaches the rated pressure.
Under the above static filling condition, 14 35MPa logistics vehicles (with a single vehicle filling amount of 10kg) can be filled, at this time, the pressures of the first-stage gas storage bottle group, the second-stage gas storage bottle group and the third-stage gas storage bottle group are respectively 20MPa, 25MPa and 40MPa, and the hydrogen utilization rate is 27.45%.
Comparative example 1:
the total hydrogen storage capacity in the hydrogen filling station is 510kg, and the pressure of a three-stage equal-capacity hydrogen storage system, namely a first-stage gas storage cylinder group, a second-stage gas storage cylinder group and a third-stage gas storage cylinder group is 45 MPa. According to the sequence of gas taking from the gas storage cylinder group and the pressure difference requirement which can meet the requirement of the pressure difference filling rate, the gas taking limit pressures of the hydrogen storage container are respectively set to be 20MPa, 25MPa and 40 MPa. The first preset pressure difference and the second preset pressure difference are both 3 MPa. When a hydrogen fuel cell automobile enters a station to fill hydrogen, the first-stage gas storage bottle group is preferentially distributed to fill, and when the difference between the pressure of the first-stage gas storage bottle group and the pressure of the vehicle-mounted hydrogen storage system is lower than 3MPa or the pressure of the first-stage gas storage bottle group is lower than 20MPa, the second-stage gas storage bottle group and the third-stage gas storage bottle group are sequentially distributed to fill until the vehicle-mounted hydrogen storage system reaches rated pressure.
Under the static filling condition, 8 35MPa logistics vehicles (the filling amount of a single vehicle is 10kg) can be filled, the pressure of the three-stage hydrogen storage container is respectively 25MPa, 37MPa and 43MPa, and the hydrogen utilization rate is 15.69%.
Fig. 3A is a schematic illustration of the filling process of example 1. Fig. 3B is a schematic illustration of the filling process of comparative example 1. As shown in fig. 3A and 3B, the first-stage gas cylinder group, the second-stage gas cylinder group, and the third-stage gas cylinder group with the same pressure of 45MPa can be filled with more hydrogenation targets than in comparative example 1, and the sum of the remaining hydrogen in the first-stage gas cylinder group, the second-stage gas cylinder group, and the third-stage gas cylinder group in example 1 is smaller than the sum of the remaining hydrogen in the first-stage gas cylinder group, the second-stage gas cylinder group, and the third-stage gas cylinder group in comparative example 1, so that the hydrogen utilization rate is higher.
Example 2: the total hydrogen storage capacity in the hydrogen filling station is 340kg, and the pressure of a three-stage equal-capacity hydrogen storage system, namely a first-stage gas storage cylinder group, a second-stage gas storage cylinder group and a third-stage gas storage cylinder group is 45 MPa. According to the sequence of gas taking from the gas storage cylinder groups and the filling process requirements, the gas taking limit pressures of the primary gas storage cylinder group, the secondary gas storage cylinder group and the tertiary gas storage cylinder group are respectively set to be 20MPa, 20MPa and 20 MPa. The first preset pressure difference and the second preset pressure difference are both 3 MPa. The first predetermined mass flow rate is 0.4kg/min, the second predetermined mass flow rate is 0.3kg/min, and a third predetermined mass flow rate (i.e. the corresponding predetermined mass flow rate when using the three-stage gas cylinder set for hydrogenation, generally speaking, the mass flow rate of the three-stage gas cylinder set will not be lower than the third predetermined mass flow rate before filling the hydrogenation object) is 0.2 kg/min. When a hydrogen fuel cell automobile enters a station to fill hydrogen, the primary gas storage cylinder group is preferentially distributed to fill, when the difference between the pressure of the primary gas storage cylinder group and the pressure of the vehicle-mounted hydrogen storage system is lower than 3MPa, the filling is continued until the mass flow rate is lower than 0.4kg/min or the pressure of the primary gas storage cylinder group is lower than 20MPa, the secondary gas storage cylinder group and the tertiary gas storage cylinder group are sequentially distributed to fill according to the control strategy until the vehicle-mounted hydrogen storage system reaches the rated pressure.
Under the static filling condition, 9 35MPa logistics vehicles (the filling amount of a single vehicle is 10kg) can be filled, the pressure of the three-stage hydrogen storage container is respectively 20MPa, 25MPa and 40MPa, and the hydrogen utilization rate is 26.47%.
Comparative example 2: the total hydrogen storage capacity in the hydrogen filling station is 340kg, and the pressure of a three-stage equal-capacity hydrogen storage system, namely a first-stage gas storage cylinder group, a second-stage gas storage cylinder group and a third-stage gas storage cylinder group is 45 MPa. According to the sequence of gas taking from the gas storage cylinder group and the pressure difference requirement required by meeting the pressure difference filling rate, the gas taking limit pressures of the hydrogen storage container are respectively set to be 20MPa, 25MPa and 40 MPa. The first preset pressure difference and the second preset pressure difference are both 3 MPa. When a hydrogen fuel cell automobile enters a station to fill hydrogen, the primary gas storage cylinder group is preferentially distributed to fill, and when the difference between the pressure of the primary gas storage cylinder group and the pressure of the vehicle-mounted hydrogen storage system is lower than 3MPa or the pressure of the primary gas storage cylinder group is lower than 20MPa, the secondary gas storage cylinder group and the tertiary gas storage cylinder group are sequentially distributed to fill until the vehicle-mounted hydrogen storage system reaches the rated pressure.
Under the static filling condition, 5 35MPa logistics vehicles (the filling amount of a single vehicle is 10kg) can be filled, the pressure of the three-stage hydrogen storage container is respectively 25MPa, 38MPa and 44MPa, and the hydrogen utilization rate is 14.7%.
Fig. 4A is a schematic illustration of the filling process of example 2. Fig. 4B is a schematic illustration of the filling process of comparative example 2. As shown in fig. 4A and 4B, the first-stage gas cylinder group, the second-stage gas cylinder group, and the third-stage gas cylinder group with the same pressure of 45MPa can be filled with more hydrogenation targets in example 2 than in comparative example 2, and the sum of the remaining hydrogen in the first-stage gas cylinder group, the second-stage gas cylinder group, and the third-stage gas cylinder group in example 2 is smaller than the sum of the remaining hydrogen in the first-stage gas cylinder group, the second-stage gas cylinder group, and the third-stage gas cylinder group in comparative example 2, so that the hydrogen utilization rate is higher.
Fig. 5 is a block diagram of a hydrogenation control device of a hydrogenation station according to an embodiment of the present invention. As shown in fig. 5, the hydrogenation station includes at least two stages of gas storage bottle groups and a hydrogenation unit, the at least two stages of gas storage bottle groups include a first stage gas storage bottle group and a second stage gas storage bottle group, and the device includes: the device comprises a control unit 1 and a detection unit 2, wherein the control unit 1 is used for controlling the hydrogenation machine to hydrogenate by using the primary gas storage bottle group; the detection unit 2 is used for detecting the pressure and the instantaneous mass flow rate of the primary gas storage bottle group; the control unit 1 is further configured to control the hydrogenation unit to perform hydrogenation by using the second gas cylinder group when a difference between the pressure of the first gas cylinder group and the pressure of the hydrogenation object is smaller than a first preset pressure difference and the instantaneous mass flow rate is smaller than a first preset mass flow rate.
Preferably, the at least two-stage gas cylinder group further comprises a three-stage gas cylinder group, and the detection unit 2 is further configured to detect the pressure and the instantaneous mass flow rate of the two-stage gas cylinder group after controlling the hydrogenation machine to perform hydrogenation by using the two-stage gas cylinder group; the control unit 1 is further configured to control the hydrogenation machine to perform hydrogenation by using the third-stage gas storage cylinder group when a difference between the pressure of the second-stage gas storage cylinder group and the pressure of the hydrogenation object is smaller than a second preset pressure difference and the instantaneous mass flow rate is smaller than a second preset mass flow rate.
Preferably, when the hydrogenation machine is controlled to use the primary gas storage bottle group for hydrogenation, the control unit 1 is further configured to: when the pressure of the first-stage gas storage bottle group is smaller than the gas taking limit pressure of the gas storage bottle group, controlling the hydrogenation machine to use the second-stage gas storage bottle group for hydrogenation; when the hydrogenation machine is controlled to use the secondary gas storage bottle group for hydrogenation, the control unit 1 is further configured to: and when the pressure of the secondary gas storage bottle group is smaller than the gas taking limit pressure of the gas storage bottle group, controlling the hydrogenation machine to use the tertiary gas storage bottle group for hydrogenation.
Preferably, the first preset pressure difference and/or the second preset pressure difference is 1-10 MPa.
The embodiment of the invention also provides a hydrogen filling station, which comprises the hydrogen filling control device of the hydrogen filling station.
The above-described embodiments of the hydrogenation control device and the hydrogenation station of the hydrogenation station are similar to the above-described embodiments of the hydrogenation control method of the hydrogenation station, and are not described herein again.
Through the technical scheme, the hydrogenation station comprises at least two stages of gas storage bottle groups and a hydrogenation machine, the at least two stages of gas storage bottle groups comprise a first stage gas storage bottle group and a second stage gas storage bottle group, and the method comprises the following steps: controlling the hydrogenation machine to use the primary gas storage bottle group for hydrogenation; detecting the pressure and instantaneous mass flow rate of the primary group of gas storage cylinders; and when the difference between the pressure of the primary gas storage bottle group and the pressure of a hydrogenation object is smaller than a first preset pressure difference, and the instantaneous mass flow rate is smaller than a first preset mass flow rate, controlling the hydrogenation machine to use the secondary gas storage bottle group for hydrogenation. The filling time and the filling degree can be accurately controlled, the hydrogen of a hydrogenation object is ensured not to be overtemperature, not to be overpressurized and not to be overcharged in the filling process, meanwhile, the working pressure of the gas storage bottle group can be reduced to a greater degree, the hydrogen utilization rate is improved, and the energy consumption of a compressor is reduced.
The hydrogenation control device of the hydrogenation station comprises a processor and a memory, wherein the control unit, the detection unit and the like are stored in the memory as program units, and the processor executes the program units stored in the memory to realize corresponding functions.
The processor comprises a kernel, and the kernel calls the corresponding program unit from the memory. One or more than one inner core can be arranged, and the hydrogen utilization rate is improved by adjusting the inner core parameters.
The memory may include volatile memory in a computer readable medium, Random Access Memory (RAM) and/or nonvolatile memory such as Read Only Memory (ROM) or flash memory (flash RAM), and the memory includes at least one memory chip.
An embodiment of the present invention provides a storage medium having a program stored thereon, the program implementing the hydrogenation control method of the hydrogenation station when being executed by a processor.
The embodiment of the invention provides a processor, which is used for running a program, wherein the program is used for executing a hydrogenation control method of a hydrogenation station during running.
The embodiment of the invention provides equipment, which comprises a processor, a memory and a program which is stored on the memory and can run on the processor, wherein the processor executes the program and realizes the following steps:
controlling the hydrogenation machine to use the primary gas storage bottle group for hydrogenation; detecting the pressure and instantaneous mass flow rate of the primary group of gas storage cylinders; and when the difference between the pressure of the primary gas storage cylinder group and the pressure of a hydrogenation object is smaller than a first preset pressure difference and the instantaneous mass flow rate is smaller than a first preset mass flow rate, controlling the hydrogenation machine to use the secondary gas storage cylinder group for hydrogenation.
Preferably, the at least two-stage gas cylinder group further comprises a three-stage gas cylinder group, and after controlling the hydrogenation machine to use the two-stage gas cylinder group for hydrogenation, the method further comprises: detecting the pressure and instantaneous mass flow rate of the secondary gas storage cylinder group; and when the difference between the pressure of the secondary gas storage bottle group and the pressure of a hydrogenation object is smaller than a second preset pressure difference, and the instantaneous mass flow rate is smaller than a second preset mass flow rate, controlling the hydrogenation machine to use the tertiary gas storage bottle group for hydrogenation.
Preferably, the first preset pressure difference and/or the second preset pressure difference is 1-10 MPa.
Preferably, the first and/or second preset mass flow rate is 0.1-1 kg/min.
Preferably, when the hydrogenation machine is controlled to use the primary gas storage bottle group for hydrogenation, the method further comprises the following steps: when the pressure of the first-stage gas storage bottle group is smaller than the gas taking limit pressure of the gas storage bottle group, controlling the hydrogenation machine to use the second-stage gas storage bottle group for hydrogenation; when the hydrogenation machine is controlled to use the secondary gas storage bottle group for hydrogenation, the method also comprises the following steps: and when the pressure of the secondary gas storage bottle group is smaller than the gas taking limit pressure of the gas storage bottle group, controlling the hydrogenation machine to use the tertiary gas storage bottle group for hydrogenation.
The device herein may be a server, a PC, a PAD, a mobile phone, etc.
The present application also provides a computer program product adapted to perform a program for initializing the following method steps when executed on a data processing device:
controlling the hydrogenation machine to use the primary gas storage bottle group for hydrogenation; detecting the pressure and instantaneous mass flow rate of the primary reservoir bank; and when the difference between the pressure of the primary gas storage cylinder group and the pressure of a hydrogenation object is smaller than a first preset pressure difference and the instantaneous mass flow rate is smaller than a first preset mass flow rate, controlling the hydrogenation machine to use the secondary gas storage cylinder group for hydrogenation.
Preferably, the at least two-stage gas cylinder group further comprises a three-stage gas cylinder group, and after controlling the hydrogenation machine to perform hydrogenation by using the two-stage gas cylinder group, the method further comprises: detecting the pressure and instantaneous mass flow rate of the secondary gas storage cylinder group; and when the difference between the pressure of the secondary gas storage bottle group and the pressure of a hydrogenation object is smaller than a second preset pressure difference, and the instantaneous mass flow rate is smaller than a second preset mass flow rate, controlling the hydrogenation machine to use the tertiary gas storage bottle group for hydrogenation.
Preferably, the first preset pressure difference and/or the second preset pressure difference is 1-10 MPa.
Preferably, the first and/or second preset mass flow rate is 0.1-1 kg/min.
Preferably, when the hydrogenation machine is controlled to use the primary gas storage bottle group for hydrogenation, the method further comprises the following steps: when the pressure of the first-stage gas storage bottle group is smaller than the gas taking limit pressure of the gas storage bottle group, controlling the hydrogenation machine to use the second-stage gas storage bottle group for hydrogenation; when the hydrogenation machine is controlled to use the secondary gas storage bottle group for hydrogenation, the method also comprises the following steps: and when the pressure of the secondary gas storage bottle group is smaller than the gas taking limit pressure of the gas storage bottle group, controlling the hydrogenation machine to use the tertiary gas storage bottle group for hydrogenation.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). The memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims (10)

1. A hydrogenation control method of a hydrogenation station comprises at least two stages of gas storage bottle groups and a hydrogenation machine, wherein the at least two stages of gas storage bottle groups comprise a first stage gas storage bottle group and a second stage gas storage bottle group, and the method is characterized by comprising the following steps of:
controlling the hydrogenation machine to use the primary gas storage bottle group for hydrogenation;
detecting the pressure and instantaneous mass flow rate of the primary reservoir bank;
and when the difference between the pressure of the primary gas storage cylinder group and the pressure of a hydrogenation object is smaller than a first preset pressure difference and the instantaneous mass flow rate is smaller than a first preset mass flow rate, controlling the hydrogenation machine to use the secondary gas storage cylinder group for hydrogenation.
2. The hydrogenation control method of a hydrogenation station according to claim 1, wherein the at least two-stage gas cylinder group further comprises a three-stage gas cylinder group, and after controlling the hydrogenation machine to perform hydrogenation using the two-stage gas cylinder group, the method further comprises:
detecting the pressure and instantaneous mass flow rate of the secondary reservoir bank;
and when the difference between the pressure of the secondary gas storage bottle group and the pressure of the hydrogenation object is smaller than a second preset pressure difference and the instantaneous mass flow rate is smaller than a second preset mass flow rate, controlling the hydrogenation machine to use the tertiary gas storage bottle group for hydrogenation.
3. The method of claim 2, wherein the first predetermined pressure differential and/or the second predetermined pressure differential is between 1 MPa and 10 MPa.
4. The hydroprocessing control method of claim 2, wherein the first and/or second predetermined mass flow rate is 0.1-1 kg/min.
5. The hydroprocessing method of claim 2,
when the hydrogenation machine is controlled to use the primary gas storage bottle group for hydrogenation, the method also comprises the following steps:
when the pressure of the first-stage gas storage bottle group is smaller than the gas taking limit pressure of the gas storage bottle group, controlling the hydrogenation machine to use the second-stage gas storage bottle group for hydrogenation;
when the hydrogenation machine is controlled to use the secondary gas storage bottle group for hydrogenation, the method also comprises the following steps:
and when the pressure of the secondary gas storage bottle group is smaller than the gas taking limit pressure of the gas storage bottle group, controlling the hydrogenation machine to use the tertiary gas storage bottle group for hydrogenation.
6. The utility model provides a hydrogenation controlling means at hydrogenation station, this hydrogenation station include at least two-stage gas storage bottle group and hydrogenation machine, and this at least two-stage gas storage bottle group includes one-level gas storage bottle group and second grade gas storage bottle group, and its characterized in that, the device includes:
a control unit and a detection unit, wherein,
the control unit is used for controlling the hydrogenation machine to carry out hydrogenation by using the primary gas storage bottle group;
the detection unit is used for detecting the pressure and the instantaneous mass flow rate of the primary gas storage bottle group;
the control unit is also used for controlling the hydrogenation machine to use the secondary gas cylinder group for hydrogenation when the difference between the pressure of the primary gas cylinder group and the pressure of a hydrogenation object is smaller than a first preset pressure difference and the instantaneous mass flow rate is smaller than a first preset mass flow rate.
7. The hydrogenation control device of a hydrogenation station as set forth in claim 6, wherein the at least two-stage gas cylinder group further comprises a three-stage gas cylinder group, and after controlling the hydrogenation machine to perform hydrogenation using the two-stage gas cylinder group,
the detection unit is also used for detecting the pressure and the instantaneous mass flow rate of the secondary gas storage bottle group;
the control unit is also used for controlling the hydrogenation machine to use the third-stage gas storage bottle group for hydrogenation when the difference between the pressure of the second-stage gas storage bottle group and the pressure of a hydrogenation object is smaller than a second preset pressure difference and the instantaneous mass flow rate is smaller than a second preset mass flow rate.
8. The hydrogenation control apparatus of a hydrogenation station according to claim 7,
when the hydrogenation machine is controlled to use the primary gas storage bottle group for hydrogenation, the control unit is further used for: when the pressure of the first-stage gas storage bottle group is smaller than the gas taking limit pressure of the gas storage bottle group, controlling the hydrogenation machine to use the second-stage gas storage bottle group for hydrogenation;
when the hydrogenation machine is controlled to use the secondary gas storage bottle group for hydrogenation, the control unit is further used for: and when the pressure of the secondary gas storage bottle group is smaller than the gas taking limit pressure of the gas storage bottle group, controlling the hydrogenation machine to use the tertiary gas storage bottle group for hydrogenation.
9. The hydrogenation control device of a hydrogenation station according to claim 7, wherein the first predetermined pressure difference and/or the second predetermined pressure difference is 1 to 10 MPa.
10. A hydroprocessing station, characterized in that it comprises a hydroprocessing control arrangement of a hydroprocessing station according to any one of claims 6-9.
CN202110184525.5A 2021-02-08 2021-02-08 Hydrogenation control method and device for hydrogenation station and hydrogenation station Pending CN114909604A (en)

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JP2004293752A (en) * 2003-03-28 2004-10-21 Tokyo Gas Co Ltd Hydrogen filling device and control method therefor
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