CN110939862A - Long tube trailer control method and device for hydrogenation station and hydrogenation station - Google Patents
Long tube trailer control method and device for hydrogenation station and hydrogenation station Download PDFInfo
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- CN110939862A CN110939862A CN201811110275.5A CN201811110275A CN110939862A CN 110939862 A CN110939862 A CN 110939862A CN 201811110275 A CN201811110275 A CN 201811110275A CN 110939862 A CN110939862 A CN 110939862A
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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
- F17C13/00—Details of vessels or of the filling or discharging of vessels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/01—Pure fluids
- F17C2221/012—Hydrogen
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- 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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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The embodiment of the invention provides a long tube trailer control method and device for a hydrogenation station and the hydrogenation station, and belongs to the field of hydrogenation stations. The hydrogen station comprises at least one long tube trailer group, the long tube trailer group is used for providing hydrogen to a compressor, each long tube trailer group comprises at least two long tube trailers, and the method comprises the following steps: detecting the current hydrogenation demand; controlling the at least two long-tube trailers to provide hydrogen according to the current hydrogenation demand and the standard hydrogenation demand; and switching the at least two long-tube trailers when the air supply pressure is respectively a first preset pressure, a second preset pressure and an air supply stop pressure. The long tube trailer control method and device for the hydrogen refueling station and the hydrogen refueling station can obviously increase the filling performance of the hydrogen refueling station.
Description
Technical Field
The invention relates to a hydrogenation station, in particular to a long tube trailer control method and device of the hydrogenation station and the hydrogenation station.
Background
The hydrogen energy has the advantages of high energy efficiency, wide sources, renewability, zero pollution of combustion products and the like, and is internationally recognized as a future green energy source. In recent years, hydrogen energy vehicles have been vigorously developed in many countries and regions including the united states, the day, the middle, the korea, and the european union, and hydrogen stations and related hydrogen energy infrastructure have been actively constructed. The hydrogen is taken as power, and becomes an important application direction in the field of new energy. The hydrogen is filled into the fuel cell automobile through a hydrogenation machine of the hydrogenation station and is stored in a vehicle-mounted hydrogen cylinder in a high-pressure mode.
In the prior art, a long tube trailer is usually used as an external hydrogen supply source in the hydrogenation station, the initial pressure is generally 20MPa, and hydrogen is pressurized by a compressor and stored in a storage tank of the hydrogenation station. In the hydrogen supply process of the long-tube trailer, the pressure is gradually reduced, so that the pressurization flow is reduced, and the filling performance of the hydrogen filling station is changed. Because the hydrogenation demand of hydrogenation station constantly changes, when using long tube trailer to supply hydrogen at will, the filling performance of hydrogenation station probably is not fit for current hydrogenation demand, leads to when needing great filling performance to satisfy great hydrogenation demand, and the filling performance of hydrogenation station is not enough on the contrary.
Disclosure of Invention
The invention aims to provide a long-tube trailer 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 long tube trailer control method for a hydrogen refueling station, where the hydrogen refueling station includes at least one long tube trailer group, the long tube trailer group is used for providing hydrogen to a compressor, each long tube trailer group includes at least two long tube trailers, and the method includes: detecting the current hydrogenation demand; controlling the at least two long-tube trailers to provide hydrogen according to the current hydrogenation demand and the standard hydrogenation demand; and switching the at least two long-tube trailers when the air supply pressure is respectively a first preset pressure, a second preset pressure and an air supply stop pressure.
Preferably, the at least two long tube trailers comprise at least a first long tube trailer and a second long tube trailer, wherein the pressure of the first long tube trailer is greater than the pressure of the second long tube trailer, and the controlling the at least two long tube trailers to provide hydrogen according to the current hydrogenation demand and the standard hydrogenation demand comprises: and when the current hydrogenation demand is greater than or equal to the standard hydrogenation demand, controlling the first long-tube trailer to provide hydrogen.
Preferably, the at least two long tube trailers comprise at least a first long tube trailer and a second long tube trailer, wherein the pressure of the first long tube trailer is greater than the pressure of the second long tube trailer, and the controlling the at least two long tube trailers to provide hydrogen according to the current hydrogenation demand and the standard hydrogenation demand comprises: and when the current hydrogenation demand is smaller than the standard hydrogenation demand, controlling the second long-tube trailer to provide hydrogen.
Preferably, the at least two tube trailers comprise at least a first tube trailer and a second tube trailer, and before controlling the at least two tube trailers to provide hydrogen, the method further comprises: detecting the pressure of the at least two tube trailers; wherein, switch when air feed pressure is first preset pressure, second preset pressure and air feed ending pressure respectively two at least long-tube trailers include: controlling the first tube trailer to provide hydrogen; when the pressure of the first tube trailer is equal to the first preset pressure, controlling the second tube trailer to provide hydrogen; when the pressure of the second tube trailer is equal to the second preset pressure, controlling the first tube trailer to provide hydrogen; when the pressure of the first tube trailer is equal to the gas supply cut-off pressure, controlling the second tube trailer to provide hydrogen until the pressure of the second tube trailer is equal to the first preset pressure; judging whether an unused long tube trailer exists or not; when an unused long pipe trailer exists, controlling the unused long pipe trailer to provide hydrogen so as to switch the unused long pipe trailer and the second long pipe trailer; and when the unused long-tube trailer is not used, controlling the second long-tube trailer to provide hydrogen until the gas supply cut-off pressure.
Preferably, the detecting the current hydrogenation demand comprises: detecting the number of vehicles requiring hydrogenation in a preset time; and determining the current hydrogenation demand according to the number of vehicles requiring hydrogenation.
The embodiment of the invention also provides a long tube trailer control device for a hydrogenation station, wherein the hydrogenation station comprises at least one long tube trailer group, the long tube trailer group is used for providing hydrogen to a compressor, each long tube trailer group comprises at least two long tube trailers, and the device comprises: the device comprises a detection unit and a processing unit, wherein the detection unit is used for detecting the current hydrogenation demand; the processing unit is used for controlling the at least two long-tube trailers to provide hydrogen according to the current hydrogenation demand and the standard hydrogenation demand; and switching the at least two long-tube trailers when the air supply pressure is respectively a first preset pressure, a second preset pressure and an air supply stop pressure.
Preferably, the at least two long tube trailers comprise at least a first long tube trailer and a second long tube trailer, wherein the pressure of the first long tube trailer is greater than the pressure of the second long tube trailer, and the controlling the at least two long tube trailers to provide hydrogen according to the current hydrogenation demand and the standard hydrogenation demand comprises: and when the current hydrogenation demand is greater than or equal to the standard hydrogenation demand, controlling the first long-tube trailer to provide hydrogen.
Preferably, the at least two long tube trailers comprise at least a first long tube trailer and a second long tube trailer, wherein the pressure of the first long tube trailer is greater than the pressure of the second long tube trailer, and the controlling the at least two long tube trailers to provide hydrogen according to the current hydrogenation demand and the standard hydrogenation demand comprises: and when the current hydrogenation demand is smaller than the standard hydrogenation demand, controlling the second long-tube trailer to provide hydrogen.
Preferably, the at least two tube trailers comprise at least a first tube trailer and a second tube trailer, and before controlling the at least two tube trailers to provide hydrogen, the detection unit is further configured to: detecting the pressure of the at least two tube trailers; wherein, switch when air feed pressure is first preset pressure, second preset pressure and air feed ending pressure respectively two at least long-tube trailers include: controlling the first tube trailer to provide hydrogen; when the pressure of the first tube trailer is equal to the first preset pressure, controlling the second tube trailer to provide hydrogen; when the pressure of the second tube trailer is equal to the second preset pressure, controlling the first tube trailer to provide hydrogen; when the pressure of the first tube trailer is equal to the gas supply cut-off pressure, controlling the second tube trailer to provide hydrogen until the pressure of the second tube trailer is equal to the first preset pressure; judging whether an unused long tube trailer exists or not; when an unused long pipe trailer exists, controlling the unused long pipe trailer to provide hydrogen so as to switch the unused long pipe trailer and the second long pipe trailer; and when the unused long-tube trailer is not used, controlling the second long-tube trailer to provide hydrogen until the gas supply cut-off pressure.
Preferably, the detecting the current hydrogenation demand comprises: detecting the number of vehicles requiring hydrogenation in a preset time; and determining the current hydrogenation demand according to the number of vehicles requiring hydrogenation.
The embodiment of the invention also provides a hydrogen filling station, which comprises the long-tube trailer control device of the hydrogen filling station.
By adopting the technical scheme, the long tube trailer control method and device for the hydrogen filling station and the hydrogen filling station provided by the invention comprise the following steps: detecting the current hydrogenation demand; and controlling the at least two long-tube trailers to provide hydrogen according to the current hydrogenation demand and the standard hydrogenation demand, and switching the at least two long-tube trailers when the gas supply pressure is respectively a first preset pressure, a second preset pressure and a gas supply cut-off pressure. The invention controls the long tube trailer for providing hydrogen according to the current hydrogenation demand, can use the suitable long tube trailer along with the change of the hydrogenation demand, and switches the long tube trailer, so that the filling performance of the hydrogenation station is obviously improved.
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 without limiting the embodiments of the invention. In the drawings:
fig. 1 is a flowchart of a tube trailer control method of a hydrogen refueling station according to an embodiment of the present invention;
FIG. 2 is a flow chart of a tube trailer control method for a hydrogen refueling station according to another embodiment of the present invention;
FIG. 3 is a flow chart of a tube trailer control method for a hydrogen refueling station according to another embodiment of the present invention;
figure 4 is a schematic diagram of a tube trailer shift control provided by an embodiment of the present invention;
FIG. 5 is a flow chart of a method for detecting a current hydrogenation requirement according to one embodiment of the present invention;
fig. 6A is a schematic view of respective data of a hydrogen refueling station that employs the control method of the invention;
FIG. 6B is a schematic diagram of data from a prior art hydrogen station;
fig. 7A is a schematic view of respective data of a hydrogen refueling station that employs the control method of the invention;
FIG. 7B is a schematic diagram of data from a prior art hydrogen station; and
fig. 8 is a schematic diagram of a tube trailer control device of a hydrogen filling station according to an embodiment of the present invention.
Description of the reference numerals
1 detection unit 2 processing unit
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying 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.
Fig. 1 is a flowchart of a tube trailer control method of a hydrogen refueling station according to an embodiment of the present invention. As shown in fig. 1, the hydrogen plant comprises at least one long-tube train unit for providing hydrogen to a compressor, each long-tube train unit comprising at least two long-tube trailers, the method comprising:
step S11, detecting the current hydrogenation requirement; and
step S12, controlling the at least two long-tube trailers to provide hydrogen according to the current hydrogenation demand and the standard hydrogenation demand; and
and step S13, switching the at least two long-tube trailers when the air supply pressure is respectively a first preset pressure, a second preset pressure and an air supply stop pressure.
The long-tube trailer is usually used as an external hydrogen supply source of a hydrogenation station, the pressure of the long-tube trailer is 20MPa, and hydrogen is pressurized by a compressor and stored in a storage tank of the hydrogenation station. The long tube trailer provides hydrogen for the compressor to compress the hydrogen to the target pressure and then store the hydrogen into the storage tank of the hydrogen filling station. The storage tanks can be provided with a plurality of storage tanks and have different gas storage pressures (for example, 3 storage tanks are divided into three stages of low pressure, medium pressure and high pressure), and when the hydrogenation machine is filled, gas can be sequentially extracted from the low-pressure storage tank, the medium-pressure storage tank and the high-pressure storage tank for filling. The above constitutes the general structure of the hydrogenation station of the long tube trailer-compressor-storage tank-hydrogenation machine.
The long tube trailer is along with going on of supplying hydrogen, and pressure also can reduce thereupon, and the long tube trailer also can have the condition that pressure is different, and the pressure of the long tube trailer along with providing hydrogen is different, and the operating time of compressor also can change, and the speed that hydrogen was deposited in the storage tank can receive the influence, and the whole filling performance at hydrogen station also can change thereupon. According to the embodiment of the invention, according to the difference of the current hydrogenation requirements, the long tube trailers with different pressures are firstly used for supplying hydrogen (and then the long tube trailers are switched), the long tube trailers suitable for the current hydrogenation requirements can be selected, the situation that the long tube trailers are used at will regardless of the current hydrogenation requirements, namely, the long tube trailers with high pressure are used when the current hydrogenation requirements are smaller (smaller than the standard hydrogenation requirements) and the long tube trailers with low pressure are used when the current hydrogenation requirements are larger (larger than or equal to the standard hydrogenation requirements) is avoided, so that unnecessary filling performance is obtained when the current hydrogenation requirements are smaller, and the filling performance of a hydrogen filling station is insufficient when the current hydrogenation requirements are larger.
In an embodiment of the present invention, the standard hydrogenation requirement may preferably be a theoretical average daily hydrogenation amount of the hydrogenation station divided by the number of hours of hydrogenation per day, for example, y hours of hydrogenation per day of the hydrogenation station, x kg of the average daily hydrogenation amount, and then x/y kg/h of the standard hydrogenation requirement. However, the unit is not limited in the present invention, and may be g/min, g/h, or the like.
The current hydrogenation demand is the same as the standard hydrogenation demand, for example, the current hydrogenation demand can also be obtained in kg/h, and the current hydrogenation demand can be obtained in various ways, for example, through historical hydrogenation experience, that is, the hydrogenation station records the hydrogenation data of each day, so that the hydrogenation amount of each time period in hours in the whole day can be obtained, when the current hydrogenation demand needs to be detected, the time period to which the current time belongs is found, and the hydrogenation amount of the time period can be obtained as the current hydrogenation demand.
In addition, the embodiment of the present invention may also estimate the current hydrogenation demand by using the number of vehicles requiring hydrogenation, for example, predicting the number of vehicles requiring hydrogenation for a longer period by using the number of vehicles requiring hydrogenation for a short time, or predicting the number of vehicles requiring hydrogenation at hand, so as to obtain the current hydrogenation demand, for example, as will be described in detail below.
Fig. 2 is a flowchart of a tube trailer control method of a hydrogen filling station according to another embodiment of the present invention. As shown in fig. 2, the hydrogen station comprises at least one long-tube vehicle group, the long-tube trailer group is used for providing hydrogen to the compressor, each long-tube vehicle group comprises at least two long-tube trailers, the at least two long-tube trailers comprise at least a first long-tube trailer and a second long-tube trailer, the pressure of the first long-tube trailer is greater than that of the second long-tube trailer, and the method comprises the following steps:
step S21, detecting the current hydrogenation requirement;
step S22, judging whether the current hydrogenation demand is more than or equal to the standard hydrogenation demand;
step S23, when the current hydrogenation demand is more than or equal to the standard hydrogenation demand, controlling the first long-tube trailer to provide hydrogen; and
and step S24, controlling the second long-tube trailer to provide hydrogen when the current hydrogenation demand is smaller than the standard hydrogenation demand.
In the embodiment of the invention, a technical scheme that hydrogen is supplied by using long tube trailers with different pressures according to different current hydrogenation requirements is provided, namely when the current hydrogenation requirement is more than or equal to the standard hydrogenation requirement, the first long tube trailer is controlled to supply hydrogen; and when the current hydrogenation demand is smaller than the standard hydrogenation demand, controlling the second long-tube trailer to provide hydrogen. The embodiment of the invention can arrange the pressure detection equipment in the first tube trailer and the second tube trailer to detect the pressure of the first tube trailer and the second tube trailer or estimate the pressure of the tube trailer according to the hydrogen supply time of the tube trailer. When current hydrogenation demand is less, at first the less long tube trailer of use pressure supplies hydrogen, even the longer filling that does not influence the hydrogenation station of compressor operating time, can also leave the great long tube trailer of pressure simultaneously and use when current hydrogenation demand is great to overall utilization long tube trailer betterly improves the filling performance with hydrogen peak period hydrogenation station.
After selecting which tube trailer to use to provide hydrogen, next, the embodiment of the present invention switches at least two tube trailers when the supply pressure (the pressure of the tube trailer currently providing hydrogen) is the first preset pressure, the second preset pressure, and the supply cut-off pressure, respectively, to reduce the fluctuation of the hydrogen supply pressure of the tube trailers.
Fig. 3 is a flowchart of a tube trailer control method of a hydrogen filling station according to another embodiment of the present invention. As shown in fig. 3, the hydrogen station comprises at least one long-tube train unit, the long-tube trailer unit is used for providing hydrogen to the compressor, each long-tube train unit comprises at least two long-tube trailers, the at least two long-tube trailers comprise at least a first long-tube trailer and a second long-tube trailer, and the method comprises the following steps:
step S31, detecting the pressure of the at least two pipe trailers;
step S32, when the first tube trailer is used for providing hydrogen, judging whether the pressure of the first tube trailer is equal to the first preset pressure;
step S33, when the pressure of the first tube trailer is equal to the first preset pressure, controlling the second tube trailer to provide hydrogen;
step S34, determining whether the pressure of the second tube trailer is equal to the second preset pressure;
step S35, when the pressure of the second tube trailer is equal to the second preset pressure, controlling the first tube trailer to provide hydrogen;
step S36, judging whether the pressure of the first pipe trailer is equal to the air supply cut-off pressure;
step S37, when the pressure of the first tube trailer is equal to the cut-off pressure of the gas supply, controlling the second tube trailer to provide hydrogen until the pressure of the second tube trailer is equal to the first preset pressure;
step S38, judging whether an unused pipe trailer exists;
step S39, when there is an unused long tube trailer, controlling the unused long tube trailer to provide hydrogen to perform switching between the unused long tube trailer and the second long tube trailer;
and step S310, controlling the second long tube trailer to provide hydrogen until the gas supply cut-off pressure when the unused long tube trailer does not exist.
In an embodiment of the invention, a method of switching at least two tube trailers is provided, wherein the second preset pressure is greater than the first preset pressure, which is greater than the supply cut-off pressure. The embodiment of the invention is applicable to any number of tube trailers, namely when the pressure of the current tube trailer is equal to the first preset pressure, if any tube trailer is not used, the unused tube trailer is controlled to supply air until the second preset pressure, so that the switching between the unused tube trailer and the second tube trailer is performed similarly to the above, and if the tube trailers are used, the air supply of the current tube trailer is continuously controlled until the air supply stop pressure. For example, the following provides a control method for three tube trailers:
fig. 4 is a schematic diagram of the tube trailer switching control provided by the embodiment of the invention. Fig. 4 shows that the tube trailer A, B and C switch, wherein, 1, tube trailer a drops to the first preset pressure from full pressure 20Mpa, 2, switch to tube trailer B for hydrogen supply, until the pressure of tube trailer B drops to the second preset pressure, 3, switch back tube trailer a to make its air supply to air supply cutoff pressure (5Mpa), 4, switch tube trailer B air supply, until its pressure drop is the first preset pressure, 5, switch to tube trailer C, until its pressure drop is the first preset pressure, 6, switch to tube trailer B, tube trailer B uses to air supply cutoff pressure, 7, switch tube trailer C air supply, tube trailer C works until air supply cutoff pressure. The purpose of the control flow is to smooth the flow of the compressor so as to ensure that the hydrogen storage supply in the station is at a relatively constant level, and particularly to avoid transition and overdraft of the filling capacity of the bottle group and remarkable reduction of the filling capacity when the hydrogen supply is carried out for a long time at low pressure and low flow. The steps 2-6 can be repeated for more tube trailer operations. And the same can be said for the case of three or more tube trailers.
In the above-described embodiment, the pressure of the pipe trailers A, B and C is greater than the first preset pressure, and if the pressure is not greater than the first preset pressure, the control may be performed in the same manner as described above, that is, the step 3 is directly performed to supply the air to the air supply cut-off pressure, and then the downward operation is performed.
FIG. 5 is a flow chart of a method for detecting a current hydrogenation requirement according to an embodiment of the present invention. As shown in fig. 5, the method includes:
step S51, detecting the number of vehicles requiring hydrogenation in a preset time; and
and step S52, determining the current hydrogenation demand according to the number of the vehicles requiring hydrogenation.
As described above, the embodiment of the present invention may generally use kg/h as the unit of the current hydrogenation demand, and in the embodiment, the number of vehicles requiring hydrogenation in a predetermined time may be used to predict the number of vehicles requiring hydrogenation in the hour of the predetermined time. For example, the predetermined time is 10 minutes, and may be 8 o 'clock to 8 o' clock 10 minutes, and the number of vehicles requiring hydrogenation in the 10 minutes is 4, then the number of vehicles requiring hydrogenation at 8 o 'clock to 9 o' clock can be predicted to be 24, and then the current hydrogenation demand at 8 o 'clock to 9 o' clock can be determined by multiplying the standard hydrogenation capacity of each vehicle.
In addition, the number of vehicles requiring hydrogenation in a preset time can be detected in a forward-looking manner, that is, the number of the vehicles requiring hydrogenation in the coming time is predicted, so that the current hydrogenation demand is obtained, for example, whether the vehicle requiring hydrogenation is likely to be hydrogenated in the coming time can be judged by collecting the position information and the driving direction of the vehicle requiring hydrogenation, and the hydrogenation cycle of the vehicle requiring hydrogenation can be counted, so that whether the vehicle requiring hydrogenation is close to the hydrogenation station at this time for hydrogenation purpose can be judged, so that the number of the vehicles requiring hydrogenation in the coming time can be predicted more accurately, and the current hydrogenation demand can be obtained immediately.
Specific examples of control methods using the present invention are provided below:
1. fig. 6A is a schematic view of respective data of a hydrogen refueling station that employs the control method of the present invention. Fig. 6B is a schematic diagram of respective data of a hydrogen station of the related art. As shown in fig. 6A-6B, the curves include the pressure of the long-tube trailer of the hydrogen filling station, the flow rate of the compressor, the pressure of the cylinder group, and the filling degree of the fuel cell bus, and in the filling degree curve of the bus, when the filling degree SOC is 100%, the filling is successful, and when the SOC is less than 95%, the filling performance is insufficient.
The hydrogen station adopts 26m3The water volume long tube trailer is externally supplied with hydrogen, the initial pressure is 20MPa, the stop pressure of the supplied gas is 5MPa, the gas discharge amount of the compressor is 135kg/h at the inlet of 30 ℃ and 20MPa, and the low, medium and high pressure three-stage hydrogen storage devices are 6, 6 and 3m3The water volume and the pressure grade are 45MPa, the fuel cell bus with 25kg of hydrogen storage capacity is filled, the switching pressure of the long-tube trailer is set to be 8MPa, the hydrogenation is started at the early 8 th point, the long-tube trailers with higher pressure are used at the 11 th point, 20 th point, 13 th point, 30 th point and 15 th point, 30 th point in the peak period, and the long-tube trailers are switched again at the 16 th point, 17 th point, 30 th point and the like, so that 36 buses can be filled continuously.
In the comparative example, the tube trailer is used randomly, and one tube trailer is directly used for supplying hydrogen until the gas supply cut-off pressure, and switching is not carried out, so that the filling requirement can not be met obviously at about 14 points, and only 25 containers can be filled.
2. Fig. 7A is a schematic view of respective data of a hydrogen refueling station that employs the control method of the present invention. Fig. 7B is a schematic diagram of respective data of a hydrogen station of the related art. As shown in fig. 7A-7B, the curves include the pressure of the long-tube trailer of the hydrogen filling station, the flow rate of the compressor, the pressure of the cylinder group, and the filling degree of the fuel cell bus, and in the filling degree curve of the bus, when the filling degree SOC is 100%, the filling is successful, and when the SOC is less than 95%, the filling performance is insufficient.
The hydrogen station adopts 26m3The water volume long tube trailer is externally supplied with hydrogen, the initial pressure is 20MPa, the stop pressure of the supplied gas is 5MPa, the gas discharge amount of the compressor is 90kg/h at the inlet temperature of 30 ℃ and 20MPa, and the low, medium and high pressure three-stage hydrogen storage devices are 2.7, 2.7 and 1.8m3The water volume and the pressure grade are 45MPa, the fuel cell bus with 13kg of hydrogen storage capacity is filled, the switching pressure of the long-tube trailer is set to be 8MPa, the hydrogenation is started at the early 8 th point, the long-tube trailer with higher pressure is used at the 13 th point of the peak period, the long-tube trailer is switched again at the 17 th point, and 44 buses can be continuously filled.
In the comparative example, the tube trailer was used at will, and a tube trailer was used directly to supply hydrogen gas up to the supply cut-off pressure, without switching, and it was evident that the filling requirements could not be met around 14 o' clock, and only 27 charges could be filled.
Fig. 8 is a schematic diagram of a tube trailer control device of a hydrogen filling station according to an embodiment of the present invention. As shown in fig. 8, an embodiment of the present invention further provides a long tube trailer control device for a hydrogen refueling station, where the hydrogen refueling station includes at least one long tube trailer group for providing hydrogen to a compressor, and each long tube trailer group includes at least two long tube trailers, and the device includes: the device comprises a detection unit 1 and a processing unit 2, wherein the detection unit 1 is used for detecting the current hydrogenation demand; the processing unit 2 is used for controlling the at least two long-tube trailers to provide hydrogen according to the current hydrogenation demand and the standard hydrogenation demand; and switching the at least two long-tube trailers when the air supply pressure is respectively a first preset pressure, a second preset pressure and an air supply stop pressure.
Preferably, the at least two long tube trailers comprise at least a first long tube trailer and a second long tube trailer, wherein the pressure of the first long tube trailer is greater than the pressure of the second long tube trailer, and the controlling the at least two long tube trailers to provide hydrogen according to the current hydrogenation demand and the standard hydrogenation demand comprises: and when the current hydrogenation demand is greater than or equal to the standard hydrogenation demand, controlling the first long-tube trailer to provide hydrogen.
Preferably, the at least two long tube trailers comprise at least a first long tube trailer and a second long tube trailer, wherein the pressure of the first long tube trailer is greater than the pressure of the second long tube trailer, and the controlling the at least two long tube trailers to provide hydrogen according to the current hydrogenation demand and the standard hydrogenation demand comprises: and when the current hydrogenation demand is smaller than the standard hydrogenation demand, controlling the second long-tube trailer to provide hydrogen.
Preferably, the at least two tube trailers comprise at least a first tube trailer and a second tube trailer, and before controlling the at least two tube trailers to provide hydrogen, the detection unit 1 is further configured to: detecting the pressure of the at least two tube trailers; wherein, switch when air feed pressure is first preset pressure, second preset pressure and air feed ending pressure respectively two at least long-tube trailers include: controlling the first tube trailer to provide hydrogen; when the pressure of the first tube trailer is equal to the first preset pressure, controlling the second tube trailer to provide hydrogen; when the pressure of the second tube trailer is equal to the second preset pressure, controlling the first tube trailer to provide hydrogen; when the pressure of the first tube trailer is equal to the gas supply cut-off pressure, controlling the second tube trailer to provide hydrogen until the pressure of the second tube trailer is equal to the first preset pressure; judging whether an unused long tube trailer exists or not; when an unused long pipe trailer exists, controlling the unused long pipe trailer to provide hydrogen so as to switch the unused long pipe trailer and the second long pipe trailer; and when the unused long-tube trailer is not used, controlling the second long-tube trailer to provide hydrogen until the gas supply cut-off pressure.
Preferably, the detecting the current hydrogenation demand comprises: detecting the number of vehicles requiring hydrogenation in a preset time; and determining the current hydrogenation demand according to the number of vehicles requiring hydrogenation.
The embodiment of the invention also provides a hydrogen filling station, which comprises the long-tube trailer control device of the hydrogen filling station.
By adopting the technical scheme, the long tube trailer control method and device for the hydrogen filling station and the hydrogen filling station provided by the invention comprise the following steps: detecting the current hydrogenation demand; and controlling the at least two long-tube trailers to provide hydrogen according to the current hydrogenation demand and the standard hydrogenation demand, and switching the at least two long-tube trailers when the gas supply pressure is respectively a first preset pressure, a second preset pressure and a gas supply cut-off pressure. The invention controls the long tube trailer for providing hydrogen according to the current hydrogenation demand, can use the suitable long tube trailer along with the change of the hydrogenation demand, and switches the long tube trailer, so that the filling performance of the hydrogenation station is obviously improved.
Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, the embodiments of the present invention are not limited to the details of the above embodiments, and various simple modifications can be made to the technical solutions of the embodiments of the present invention within the technical idea of the embodiments of the present invention, and the simple modifications all belong to the protection scope of the embodiments of the present invention.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the embodiments of the present invention do not describe every possible combination.
Those skilled in the art will understand that all or part of the steps in the method according to the above embodiments may be implemented by a program, which is stored in a storage medium and includes several instructions to enable a single chip, a chip, or a processor (processor) to execute all or part of the steps in the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In addition, any combination of various different implementation manners of the embodiments of the present invention is also possible, and the embodiments of the present invention should be considered as disclosed in the embodiments of the present invention as long as the combination does not depart from the spirit of the embodiments of the present invention.
Claims (11)
1. A method of tube trailer control for a hydrogen loading station, the hydrogen loading station comprising at least one set of tube trailers for supplying hydrogen to a compressor, each set of tube trailers comprising at least two tube trailers, the method comprising:
detecting the current hydrogenation demand;
controlling the at least two long-tube trailers to provide hydrogen according to the current hydrogenation demand and the standard hydrogenation demand; and
and switching the at least two long-tube trailers when the air supply pressure is respectively a first preset pressure, a second preset pressure and an air supply stop pressure.
2. The method for controlling the tube trailer of the hydrogen refueling station according to the claim 1, wherein the at least two tube trailers comprise at least a first tube trailer and a second tube trailer, wherein the pressure of the first tube trailer is higher than the pressure of the second tube trailer, and the controlling the at least two tube trailers to provide hydrogen according to the current hydrogenation demand and the standard hydrogenation demand comprises:
and when the current hydrogenation demand is greater than or equal to the standard hydrogenation demand, controlling the first long-tube trailer to provide hydrogen.
3. The method for controlling the tube trailer of the hydrogen refueling station according to the claim 1, wherein the at least two tube trailers comprise at least a first tube trailer and a second tube trailer, wherein the pressure of the first tube trailer is higher than the pressure of the second tube trailer, and the controlling the at least two tube trailers to provide hydrogen according to the current hydrogenation demand and the standard hydrogenation demand comprises:
and when the current hydrogenation demand is smaller than the standard hydrogenation demand, controlling the second long-tube trailer to provide hydrogen.
4. The tube trailer control method of a hydrogen filling station of claim 1, wherein the at least two tube trailers comprise at least a first tube trailer and a second tube trailer, and before controlling the at least two tube trailers to provide hydrogen gas, the method further comprises:
detecting the pressure of the at least two tube trailers;
wherein, switch when air feed pressure is first preset pressure, second preset pressure and air feed ending pressure respectively two at least long-tube trailers include:
controlling the first tube trailer to provide hydrogen;
when the pressure of the first tube trailer is equal to the first preset pressure, controlling the second tube trailer to provide hydrogen;
when the pressure of the second tube trailer is equal to the second preset pressure, controlling the first tube trailer to provide hydrogen;
when the pressure of the first tube trailer is equal to the gas supply cut-off pressure, controlling the second tube trailer to provide hydrogen until the pressure of the second tube trailer is equal to the first preset pressure;
judging whether an unused long tube trailer exists or not;
when an unused long pipe trailer exists, controlling the unused long pipe trailer to provide hydrogen so as to switch the unused long pipe trailer and the second long pipe trailer;
and when the unused long-tube trailer is not used, controlling the second long-tube trailer to provide hydrogen until the gas supply cut-off pressure.
5. The tube trailer control method of a hydrogen refueling station as recited in claim 1, wherein the detecting a current hydrogen refueling demand comprises:
detecting the number of vehicles requiring hydrogenation in a preset time; and
and determining the current hydrogenation demand according to the number of the vehicles requiring hydrogenation.
6. A long tube trailer control device of a hydrogen station, which is characterized in that the hydrogen station comprises at least one long tube trailer group, the long tube trailer group is used for providing hydrogen to a compressor, each long tube trailer group comprises at least two long tube trailers, and the device comprises:
a detection unit and a processing unit, wherein,
the detection unit is used for detecting the current hydrogenation requirement;
the processing unit is used for controlling the at least two long-tube trailers to provide hydrogen according to the current hydrogenation demand and the standard hydrogenation demand; and switching the at least two long-tube trailers when the air supply pressure is respectively a first preset pressure, a second preset pressure and an air supply stop pressure.
7. The tube trailer control arrangement of a hydrogen station of claim 6, wherein the at least two tube trailers comprise at least a first tube trailer and a second tube trailer, wherein the pressure of the first tube trailer is greater than the pressure of the second tube trailer, and wherein the controlling the at least two tube trailers to provide hydrogen gas according to the current hydrogen demand and the standard hydrogen demand comprises:
and when the current hydrogenation demand is greater than or equal to the standard hydrogenation demand, controlling the first long-tube trailer to provide hydrogen.
8. The tube trailer control arrangement of a hydrogen station of claim 6, wherein the at least two tube trailers comprise at least a first tube trailer and a second tube trailer, wherein the pressure of the first tube trailer is greater than the pressure of the second tube trailer, and wherein the controlling the at least two tube trailers to provide hydrogen gas according to the current hydrogen demand and the standard hydrogen demand comprises:
and when the current hydrogenation demand is smaller than the standard hydrogenation demand, controlling the second long-tube trailer to provide hydrogen.
9. The tube trailer control arrangement of a hydrogen station of claim 6, wherein the at least two tube trailers comprise at least a first tube trailer and a second tube trailer, and before controlling the at least two tube trailers to provide hydrogen, the detection unit is further configured to:
detecting the pressure of the at least two tube trailers;
wherein, switch when air feed pressure is first preset pressure, second preset pressure and air feed ending pressure respectively two at least long-tube trailers include:
controlling the first tube trailer to provide hydrogen;
when the pressure of the first tube trailer is equal to the first preset pressure, controlling the second tube trailer to provide hydrogen;
when the pressure of the second tube trailer is equal to the second preset pressure, controlling the first tube trailer to provide hydrogen;
when the pressure of the first tube trailer is equal to the gas supply cut-off pressure, controlling the second tube trailer to provide hydrogen until the pressure of the second tube trailer is equal to the first preset pressure;
judging whether an unused long tube trailer exists or not;
when an unused long pipe trailer exists, controlling the unused long pipe trailer to provide hydrogen so as to switch the unused long pipe trailer and the second long pipe trailer;
and when the unused long-tube trailer is not used, controlling the second long-tube trailer to provide hydrogen until the gas supply cut-off pressure.
10. The tube trailer control arrangement of a hydroprocessing station as recited in claim 6, wherein said detecting a current hydroprocessing requirement comprises:
detecting the number of vehicles requiring hydrogenation in a preset time; and
and determining the current hydrogenation demand according to the number of the vehicles requiring hydrogenation.
11. A hydroprocessing station, characterized in that it comprises a tube trailer control arrangement of a hydroprocessing station according to any one of claims 6-10.
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| CN201811110275.5A CN110939862B (en) | 2018-09-21 | 2018-09-21 | Long tube trailer control method and device for hydrogenation station and hydrogenation station |
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| CN201811110275.5A CN110939862B (en) | 2018-09-21 | 2018-09-21 | Long tube trailer control method and device for hydrogenation station and hydrogenation station |
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Address after: 100011 Beijing Dongcheng District, West Binhe Road, No. 22 Patentee after: CHINA ENERGY INVESTMENT Corp.,Ltd. Patentee after: Beijing low carbon clean energy research institute Address before: 100011 Beijing Dongcheng District, West Binhe Road, No. 22 Patentee before: CHINA ENERGY INVESTMENT Corp.,Ltd. Patentee before: Beijing low carbon clean energy research institute |