CN109708000A - A kind of L-CH2 type hydrogenation stations heat management system - Google Patents
A kind of L-CH2 type hydrogenation stations heat management system Download PDFInfo
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- CN109708000A CN109708000A CN201910135867.0A CN201910135867A CN109708000A CN 109708000 A CN109708000 A CN 109708000A CN 201910135867 A CN201910135867 A CN 201910135867A CN 109708000 A CN109708000 A CN 109708000A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/34—Hydrogen distribution
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Abstract
The present invention discloses a kind of L-CH2 type hydrogenation stations heat management system.The liquid outlet of the low pressure liquid hydrogen storage tank of the inlet connection hydrogenation stations of first vaporizer；The tube side of Intermediate Heat Exchanger is accessed between the gas outlet of first vaporizer and the air inlet of the second vaporizer, the gas outlet of the second vaporizer is connected to the first interface of gas mixer；The second interface of gas mixer is connected with hydrogenation stations high-pressure hydrogen storage adapter tube, and third interface is connected with the hydrogen inlet of hydrogen forecooler, and the hydrogen outlet of hydrogen forecooler is connected to high pressure hydrogen air filling gun；The shell side of Intermediate Heat Exchanger is accessed between the pre- cold liquid inlet and pre- cold liquid outlet of hydrogen forecooler, the pre-cooling liquid flowed out by hydrogen forecooler flows back into hydrogen forecooler and recycled after the cooling of low temperature hydrogen in Intermediate Heat Exchanger.The present invention carries cooling capacity using liquid hydrogen and carries out high pressure hydrogen pre-cooling without cold energy recovery technology, saves the pre-cooling energy consumption when filling of traditional L-CH2 type hydrogenation stations high pressure hydrogen.
Description
Technical field
The present invention relates to new energy fields, more particularly to a kind of L-CH2 type hydrogenation stations heat management system.
Background technique
Hydrogen Energy has many advantages, such as green, renewable, from a wealth of sources.To solution " traditional fossil energy shortage " and " car tail
Gas pollution " is of great significance.In recent years, hydrogen cell automobile is environmentally protective with its, filling is quick, the hydrogen fuel cell energy
The advantages that high conversion efficiency, causes the great attention of countries in the world.Currently, fuel cell car mostly uses 35MPa or 70MPa
The high-pressure hydrogen storing technology of pressure rating, correspondingly, also mostly using high pressure hydrogen for the hydrogenation stations that fuel cell car supplements fuel
Form filled.The hydrogen source of hydrogenation stations mainly includes stand interior hydrogen manufacturing, long-tube trailer hydrogen supply, liquid hydrogen tank car hydrogen supply (L-CH2
Type hydrogenation stations) etc. several ways.Wherein, L-CH2 type hydrogenation stations liquid hydrogen tank car hydrogen supply, in the form of high pressure hydrogen be fuel
Fuel cell vehicle adds hydrogen, has apparent cost advantage, benefit farther out plus in the biggish situation of hydrogen amount in hydrogenation stations and hydrogen place of production distance
It is that hydrogenation stations hydrogen supply can effectively solve the problem that hydrogen source and the inconsistent problem in user location with liquid hydrogen tank car.
When hydrogenation stations are that fuel cell car fills high pressure hydrogen, due to the throttling temperature-rise effect meeting of pinch effect and hydrogen
Significant temperature rise is generated in vehicle-mounted high-pressure hydrogen storing gas cylinder, and once 85 DEG C safety temperature of the hydrogen temperature higher than such gas cylinder in bottle
The upper limit is spent, the destruction of cylinder material is just likely to result in, causes serious safety problem.For this purpose, American Automobile Association is formulated
High pressure hydrogen filling standard in require filling when must carry out precooling processing to high pressure hydrogen.
Low pressure liquid hydrogen is transported to hydrogenation stations by liquid hydrogen tank car by conventional L-CH2 type hydrogenation stations, and by unloading, hose will
Liquid hydrogen in tank car is unloaded to low pressure liquid hydrogen storage tank in hydrogenation stations, using liquid hydrogen booster pump and liquid hydrogen vaporizer by institute in liquid hydrogen storage tank
Liquid storage hydrogen is pressurized and is vaporized, and the normal temperature high voltage hydrogen after vaporization heating flows into hydrogenation stations in high-pressure hydrogen storage, is utilized
Pressure difference in standing between high-pressure hydrogen storage and fuel cell car vehicle-mounted high-pressure hydrogen storing gas cylinder, through pressure regulator valve and equipped with refrigeration system
The high pressure hydrogen forecooler of system is that fuel cell car fills high pressure hydrogen.Wherein, high pressure hydrogen pre-cooling needs to consume centainly
Energy consumption for cooling.For L-CH2 type hydrogenation stations, sent out although cold energy recovery technology can be used using the cooling capacity carried in liquid hydrogen
Electricity, recycle caused by electric energy for high pressure hydrogen precooling process provide energy, but cold energy recyclable device need to expend it is huge
Cost of investment.Therefore, for L-CH2 type hydrogenation stations, still lack a kind of can substantially reduce even without high pressure hydrogen at present
Energy consumption and lower-cost heat management system is pre-chilled.
Summary of the invention
The object of the present invention is to provide a kind of L-CH2 type hydrogenation stations heat management systems, without cold energy recovery technology
Under the premise of, cooling capacity is carried using liquid hydrogen and carries out high pressure hydrogen pre-cooling, to reduce the height for even saving traditional L-CH2 type hydrogenation stations
Press hydrogen that energy consumption is pre-chilled.
To achieve the above object, the present invention provides following schemes:
A kind of L-CH2 type hydrogenation stations heat management system, comprising: the first vaporizer, Intermediate Heat Exchanger, the second vaporizer, gas
Body mixing arrangement and hydrogen forecooler；The low pressure liquid hydrogen storage tank of the inlet connection hydrogenation stations of first vaporizer goes out liquid
Mouthful, first vaporizer is used to be vaporized liquid hydrogen and tentatively overheat；The gas outlet of first vaporizer and described the
The tube side of the Intermediate Heat Exchanger is accessed between the air inlet of two vaporizers, the gas outlet of second vaporizer is connected to gas
The first interface of mixing arrangement；The second interface of the gas mixer is connected with the adapter tube of hydrogenation stations high-pressure hydrogen storage
It connects；The third interface of the gas mixer is connect with the hydrogen inlet of the hydrogen forecooler, the hydrogen forecooler
Hydrogen outlet is connected to high pressure hydrogen air filling gun, when vehicle fills hydrogen, from the gas mixer third interface
Hydrogen fills after the hydrogen forecooler is cooling into vehicle；The pre- cold liquid inlet and pre- cold liquid outlet of the hydrogen forecooler
Between access the shell side of the Intermediate Heat Exchanger, by the pre-cooling liquid of hydrogen forecooler outflow by the Intermediate Heat Exchanger
After the cooling of hydrogen, flows back into the hydrogen forecooler and recycled.
Optionally, comprising: bypass line, the entrance of the bypass line are connected to gas outlet and the institute of first vaporizer
It states on the pipeline between the hydrogen inlet of Intermediate Heat Exchanger, the outlet of the bypass path is connected to the hydrogen of the Intermediate Heat Exchanger
On pipeline between outlet and the air inlet of second vaporizer, the tube side of the bypass line and the Intermediate Heat Exchanger is logical
Road forms parallel connection.
Optionally, when no vehicle fills hydrogen, the bypass line connection, the tube side access of the Intermediate Heat Exchanger breaks
It opens.
Optionally, further includes: continuous reversing arrangement, the continuous reversing arrangement are connected to the bypass line entrance and described
The upstream junction of the hydrogen inlet of Intermediate Heat Exchanger；When there is vehicle to fill hydrogen, the continuous reversing arrangement passes through adjusting
The ratio between the discharge coefficient of the Intermediate Heat Exchanger tube side access and the bypass line flows through the Intermediate Heat Exchanger pipe to adjust
The hydrogen flowing quantity of journey.
Optionally, further includes: the adjustable throttling set of discharge coefficient, the throttling set are set to the bypass line
On, for adjusting the hydrogen flowing quantity for flowing through the Intermediate Heat Exchanger tube side.
Optionally, further includes: circulating pump, the circulating pump are connected between the Intermediate Heat Exchanger and the hydrogen forecooler
Pre-cooling liquid circulation line on, for realizing circulation of the pre-cooling liquid between the hydrogen forecooler and the Intermediate Heat Exchanger.
Optionally, the circulating pump is frequency conversion type circulating pump, and the frequency conversion type circulating pump is pre- to adjust by adjusting revolving speed
The circular flow of cold liquid, to adjust the hydrogen temperature of the hydrogen forecooler outlet.
Optionally, further includes: the first temperature sensor, second temperature sensor, third temperature sensor and flowmeter；Institute
It states the first temperature sensor to be set on the outlet pipe of first vaporizer, for measuring the outlet of first vaporizer
The hydrogen temperature of pipeline；The second temperature sensor is set to the pre-cooling liquid entrance of the Intermediate Heat Exchanger, for measuring
The pre-cooling liquid feed liquor temperature of the Intermediate Heat Exchanger；The third temperature sensor is set to the pre-cooling liquid of the Intermediate Heat Exchanger
Exit flows out the pre-cooling liquid of the Intermediate Heat Exchanger and goes out liquid temperature for detecting；The flowmeter is set to the centre and changes
On pre-cooling liquid circulation line between hot device and the hydrogen forecooler, the pre-cooling liquid for detecting the Intermediate Heat Exchanger is recycled
Flow.
Optionally, first vaporizer and second vaporizer are air temperature type vaporizer.
The specific embodiment provided according to the present invention, the invention discloses following technical effects:
Heat exchanger of the invention is pre-chilled high pressure hydrogen using the low temperature hydrogen that liquid hydrogen is formed after the vaporization of the first vaporizer
Liquid is cooled down, and can utilize the reality of cooling capacity entrained by low temperature hydrogen itself under the premise of without complicated cold energy recyclable device
Now is eliminated by high pressure hydrogen pre-cooling energy consumption, is effectively mentioned without being equipped with refrigeration system for forecooler for the pre-cooling of high pressure hydrogen
The high efficiency of L-CH2 type hydrogenation stations.And the invention is simple and feasible, it is at low cost.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without any creative labor, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the structural schematic diagram of L-CH2 type hydrogenation stations heat management system embodiment 1 of the present invention；
Fig. 2 is the structure chart of L-CH2 type hydrogenation stations heat management system embodiment 2 of the present invention；
Fig. 3 is the structure chart of L-CH2 type hydrogenation stations heat management system embodiment 3 of the present invention.
Label in Fig. 1 are as follows: 101 first vaporizers；102 Intermediate Heat Exchangers；103 second vaporizers；104 hydrogen forecoolers；
105 low pressure liquid hydrogen storage tanks；106 high-pressure hydrogen storages, 107 high pressure hydrogen air filling guns；108 bypass lines；109 gas mixings dress
It sets；
Label in Fig. 2 and Fig. 3 are as follows: 1 low pressure liquid hydrogen storage tank；2 liquid hydrogen storage tank outlet tube roads；3 liquid hydrogen booster pump feed liquor hoses；
4 liquid hydrogen booster pump inlets；5 liquid hydrogen booster pumps；6 liquid hydrogen booster pump gas returning ports；7 liquid hydrogen booster pump return-air hoses；8 liquid hydrogen storage tanks
Return line；9 liquid hydrogen booster pump outlet tube roads；The pressurization of 10 liquid hydrogen pumps out liquid check valve；11 liquid hydrogen vaporizer first order inlet tubes
Road；The 12 liquid hydrogen vaporizer first order；13 liquid hydrogen vaporizer first order outlet pipes；14 continuously adjustable type automatic diverter valves；15 liquid
Heat exchanger hydrogen feed line between hydrogen vaporizer grade；Heat exchanger between 16 liquid hydrogen vaporizer grades；Heat exchanger between 17 liquid hydrogen vaporizer grades
Hydrogen effuser road；Heat exchanger bypass pipeline between 18 liquid hydrogen vaporizer grades；19 liquid hydrogen vaporizer second level air inlet pipelines；20 liquid hydrogen
The vaporizer second level；21 liquid hydrogen vaporizer second level outlet pipes；22 tonifying Qi automatic diverter valves；23a, 23b and 23c are gas
Mixing arrangement air inlet pipeline；24a, 24b and 24c are hydrogenation stations high-pressure hydrogen storage adapter tube；25a, 25b and 25c are to add hydrogen
It stands high-pressure hydrogen storage；26a, 26b and 26c are gas mixer outlet pipe；27 take gas automatic diverter valve；28 hydrogenation stations
High-pressure hydrogen storage takes gas general pipeline；29 automatic stop valves；It is taken between 30 automatic stop valves and pressure regulator valve；31 automatic pressure regulators；32
High pressure hydrogen forecooler hydrogen inlet；33 high pressure hydrogen forecoolers；34 high pressure hydrogen forecooler hydrogen outlets；35 charging line lists
To valve；36 flexible hose for loading interfaces；37 high pressure hydrogen flexible hose for loading；38 high pressure hydrogen air filling guns；It exchanges heat between 39 liquid hydrogen vaporizer grades
The pre-cooling liquid outlet tube road of device；The pre-cooling liquid of heat exchanger goes out liquid check valve between 40 liquid hydrogen vaporizer grades；41 pre-cooling liquid circulation lines；
42 pre-cooling liquid circulating pump inlet pipes；43 pre-cooling liquid circulating pumps；44 pre-cooling liquid circulating pump outlet tube roads；45 pre-cooling liquid circulations are with certainly
Dynamic shut-off valve；Liquid inlet pipe is pre-chilled in 46 high pressure hydrogen forecoolers；Liquid outlet tube road is pre-chilled in 47 high pressure hydrogen forecoolers；48 liquid hydrogen
The pre-cooling liquid feed liquor check valve of heat exchanger between vaporizer grade；The pre-cooling liquid inlet pipe of heat exchanger between 49 liquid hydrogen vaporizer grades；50
Liquid charging line is pre-chilled；51 hand stop valves；52 pre-cooling liquid fill interface；53a, 53b and 53c are high pressure hydrogen mixing dress
It sets；54a, 54b and 54c are hydrogen temperature sensor；55 hydrogen gas pressure sensors；56 hydrogen flowmeters；57a and 57b are
Liquid temperature sensor is pre-chilled；58 pre-cooling flow meters；59 automatic adjustable type throttling sets.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Currently, L-CH2 type hydrogenation stations can not carry out High Pressure Hydrogen using the cooling capacity that liquid hydrogen carries by simple and effective method
Pre-cooling when gas fills results in the waste of energy to need to expend additional compression energy consumption for cooling.Main mesh of the invention
Be overcome deficiency in the prior art, for the pre-cooling energy consumption problem of L-CH2 type hydrogenation stations, recycled without cold energy
Under the premise of technology, the simple and easy low pre-cooling energy consumption that cooling capacity progress high pressure hydrogen pre-cooling is carried using liquid hydrogen of one kind is provided
L-CH2 type hydrogenation stations heat management system.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
Fig. 1 is the structural schematic diagram of L-CH2 type hydrogenation stations heat management system embodiment 1 of the present invention.As shown in Figure 1, described
L-CH2 type hydrogenation stations heat management system includes with flowering structure: the first vaporizer 101, heat exchanger 102, the second vaporizer 103, hydrogen
Gas forecooler 104 and gas mixer 109.The low pressure liquid hydrogen storage of the inlet connection hydrogenation stations of first vaporizer 101
The liquid outlet of tank 105, first vaporizer 101 carry out just for being vaporized to liquid hydrogen, and to the low temperature hydrogen after vaporization
Step heating.The heat exchanger is accessed between the gas outlet of first vaporizer 101 and the air inlet of second vaporizer 103
102 tube side, the gas outlet of second vaporizer 103 are connected to gas mixing at the high-pressure hydrogen storage 106 of hydrogenation stations and fill
Set 109 first interface (air inlet)；The second interface of gas mixer 109 is connected with the adapter tube of high-pressure hydrogen storage 106
It connects, the third interface (gas outlet) of the gas mixer 109 is connect with the hydrogen inlet of the hydrogen forecooler 104, institute
The hydrogen outlet for stating hydrogen forecooler 104 is connected to high pressure hydrogen air filling gun 107, when vehicle fills hydrogen, comes from the gas
The hydrogen of 109 gas outlet of body mixing arrangement fills after the hydrogen forecooler 104 is cooling into vehicle；The hydrogen forecooler
The shell side of the Intermediate Heat Exchanger 102, the hydrogen forecooler 104 are accessed between 104 pre- cold liquid inlet and pre- cold liquid outlet
The pre-cooling liquid of outflow flows into the hydrogen forecooler 104 after the low temperature hydrogen in 102 tube side of Intermediate Heat Exchanger is cooling
Inside recycled.
It is passed through the tube side of Intermediate Heat Exchanger 102 by the low temperature hydrogen that the first vaporizer 101 flows out, enables hydrogen forecooler 104
High pressure hydrogen pre-cooling liquid stream enter the shell side of the Intermediate Heat Exchanger 102, liquid is pre-chilled to high pressure hydrogen using the Intermediate Heat Exchanger 102
It is cooled down；The high pressure hydrogen that pre-cooling liquid after cooling is passed through 104 pairs of high pressure hydrogen forecooler filling again is pre-chilled.By this
The low temperature hydrogen that Intermediate Heat Exchanger 102 is formed after the vaporization of the first vaporizer 101 using liquid hydrogen carries out high pressure hydrogen pre-cooling liquid
It is cooling, it can be realized using cooling capacity entrained by low temperature hydrogen itself to high pressure under the premise of without complicated cold energy recyclable device
The pre-cooling of hydrogen eliminates high pressure hydrogen pre-cooling energy consumption, effectively increases L- without being equipped with refrigeration system for forecooler
The efficiency of CH2 type hydrogenation stations.
The heat transfer area of first vaporizer 101 is suitably lower than high pressure hydrogen precooling temperature by its exporting hydrogen temperature and is set
Meter, the heat transfer area of the second vaporizer 103 according between the first vaporizer 101, the second vaporizer 103 without Intermediate Heat Exchanger 102
When the second vaporizer 103 exporting hydrogen temperature be designed close to environment temperature.In this way, when no vehicle fills, i.e., without height
Hydrogen pre-cooling is pressed, and when the high-pressure hydrogen storage 106 in hydrogenation stations needs to fill high pressure hydrogen (tonifying Qi), pass through the first vaporizer
101 and second vaporizer 103 liquid hydrogen can be inherently heated to be to the hydrogen of environment temperature, be the high-pressure hydrogen storage in hydrogenation stations
106 carry out tonifying Qi.
Preferably, the L-CH2 type hydrogenation stations heat management system further include: bypass line 108, the bypass line 108
Entrance be connected on the pipeline between 102 hydrogen inlet of 101 gas outlet of the first vaporizer and the Intermediate Heat Exchanger, it is described
The outlet of bypass path 108 is connected between 102 hydrogen outlet of Intermediate Heat Exchanger and 103 air inlet of the second vaporizer
On pipeline, the bypass line 108 forms in parallel with the tube side access of the Intermediate Heat Exchanger 102.When there is vehicle fueling,
When needing to carry out high pressure hydrogen pre-cooling, the bypass line 108 is disconnected, 102 tube side access of Intermediate Heat Exchanger is connected to, passes through centre
High pressure hydrogen pre-cooling liquid is cooled to required temperature (such as -50~-35 DEG C) by heat exchanger 102, when for high pressure hydrogen filling
Pre-cooling.When no vehicle fills, 102 tube side access of Intermediate Heat Exchanger is disconnected, bypass line 108 is connected to, so that the first vaporizer
101 and second vaporizer 103 be connected directly, at this time no longer to high pressure hydrogen pre-cooling liquid cool down.
Preferably, the L-CH2 type hydrogenation stations heat management system further include: continuous reversing arrangement, the continuous commutation dress
It sets and is connected to 108 entrance of bypass line with the upstream junction of 102 hydrogen inlet of Intermediate Heat Exchanger, the continuous commutation
Device adjusts the ratio between the discharge coefficient of the bypass line 108 and 102 tube side access of the Intermediate Heat Exchanger by continuously commutation,
To adjust the hydrogen flowing quantity for flowing through the Intermediate Heat Exchanger tube side, the automatic continuous tune of realization 102 hydrogen flowing quantity of Intermediate Heat Exchanger
Section carries out the outlet temperature of high pressure hydrogen pre-cooling liquid effective so as to successfully manage the variation of environment temperature and pre- refrigeration duty
Control.
Alternatively, the section that the L-CH2 type hydrogenation stations heat management system can also automatically continuously be adjusted using discharge coefficient
It flows device and replaces the continuous reversing arrangement, the throttling set is set on the bypass line 108, for continuously adjusting
The ratio between the discharge coefficient of bypass line 108 Yu the 102 tube side access of Intermediate Heat Exchanger is stated, realizes 102 hydrogen of Intermediate Heat Exchanger
The automatic continuous adjusting of flow reaches effect identical with continuous reversing arrangement.
Preferably, the L-CH2 type hydrogenation stations heat management system further include: circulating pump, the circulating pump are connected in described
Between between 102 shell side of heat exchanger and the pre-cooling liquid channel of the hydrogen forecooler 104, for complete pre-cooling liquid it is pre- in the hydrogen
Circulation between cooler 104 and the Intermediate Heat Exchanger 102.Circulating pump preferentially uses variable ratio frequency changer type.When head for precooling load and ring
When the temperature change of border, change the circular flow of pre-cooling liquid by adjusting the revolving speed of pre-cooling liquid circulating pump, it can be fast and effeciently
The variation for adapting to pre- refrigeration duty and environment temperature, by the control of forecooler exporting hydrogen temperature in the range of requiring, while can be with
Pre-cooling liquid internal circulating load is avoided to be greater than pre-cooling liquid circulating pump energy dissipation caused by actual needs value.The reality of liquid circulating pump is pre-chilled
Working frequency is adjusted according to the hydrogen out temperature of the high pressure hydrogen flow and forecooler that are filled.
Preferably, the L-CH2 type hydrogenation stations heat management system further include: the first temperature sensor, second temperature sensing
Device, third temperature sensor and flowmeter；First temperature sensor is set on the outlet pipe of first vaporizer,
For measuring the hydrogen temperature on 101 outlet pipe of the first vaporizer；The second temperature sensor is set in described
Between heat exchanger 102 pre-cooling liquid entrance, for measuring the pre-cooling liquid temperature for flowing into the Intermediate Heat Exchanger 102；The third
Temperature sensor is set to the pre-cooling liquid exit of the Intermediate Heat Exchanger 102, flows out the Intermediate Heat Exchanger 102 for detecting
Pre-cooling liquid temperature；The flowmeter is set to the pre-cooling liquid between the Intermediate Heat Exchanger 102 and the hydrogen forecooler 104
On circulation line, for detecting the pre-cooling liquid recycle stream amount of the Intermediate Heat Exchanger 102.According to pre-cooling liquid present flow rate, described
The pre-cooling liquid liquid in-out temperature of Intermediate Heat Exchanger 102, the first vaporizer outlet pipe hydrogen temperature judge Intermediate Heat Exchanger 102
Hydrogen flowing quantity needed for tube side, and the movement of continuous reversing arrangement is adjusted accordingly, the liquid temperature control that goes out that liquid is pre-chilled set
Definite value.
The first vaporizer 101 and second vaporizer 103 constitute two-stage hydrogen vaporizer, the first vaporization in the present embodiment
Device 101 is used to be vaporized liquid hydrogen and tentatively overheat, and the second vaporizer 103 through the first vaporizer 101 for will tentatively overheat
Low temperature hydrogen be heated to close to environment temperature, air temperature can be used in first vaporizer 101 and second vaporizer 103
Formula vaporizer, so as to avoid the energy consumption in liquid hydrogen vaporization and heating process.
Embodiment 2:
Fig. 2 is the structure chart of L-CH2 type hydrogenation stations heat management system embodiment 2 of the present invention, and the L-CH2 type of the present embodiment adds
Hydrogen station heat management system is based on continuous directional valve, as shown in Fig. 2, control system, liquid hydrogen tank car, liquid hydrogen tank car are omitted in Fig. 2
Into hydrogenation stations, low temperature liquid hydrogen storage tank unloads the pipeline of liquid.Liquid hydrogen from low pressure liquid hydrogen storage tank 1 is successively through liquid hydrogen storage tank outlet tube
Road 2, liquid hydrogen booster pump feed liquor hose 3, liquid hydrogen booster pump inlet 4, which enter in liquid hydrogen booster pump 5, to be pressurized, pressurized height
Hydraulic fluid hydrogen is through liquid hydrogen booster pump outlet tube road 9 (pipeline 9 is equipped with liquid hydrogen pressurization and pumps out liquid check valve 10), liquid hydrogen vaporizer first
Grade inlet pipe 11 is sent to the liquid hydrogen vaporizer first order 12 (being equivalent to the first liquid hydrogen gasifier in embodiment 1), in liquid hydrogen vapour
Change the device first order 12 in be vaporized with a degree of heating, be formed by low temperature hydrogen pneumatic transmission to the liquid hydrogen vaporizer first order and go out
Air pipe 13.
When no vehicle fills, i.e., without pre-cooling demand when, control continuously adjustable type automatic diverter valve 14 and make liquid hydrogen vaporizer
Heat exchanger hydrogen feed line is in an off state between grade, and heat exchanger bypass pipeline 18 is in connection completely between liquid hydrogen vaporizer grade
State.At this point, the low temperature hydrogen from the liquid hydrogen vaporizer first order 12 is through liquid hydrogen vaporizer first order outlet pipe 13, liquid hydrogen vapour
Heat exchanger bypass pipeline 18, liquid hydrogen vaporizer second level air inlet pipeline 19 are directly entered the liquid hydrogen vaporizer second level 20 between change device grade
(being equivalent to the second liquid hydrogen gasifier in embodiment 1), further heats low temperature hydrogen in the liquid hydrogen vaporizer second level 20
Extremely close to room temperature.Room temperature hydrogen after heating is through liquid hydrogen vaporizer second level outlet pipe 21, by controlling tonifying Qi automatic reverse
Valve 22 makes gas mixer air inlet pipe according to the tonifying Qi priority height of hydrogenation stations high-pressure hydrogen storage 25a, 25b and 25c
A wherein branch in road 23a, 23b and 23c is in connected state, and two other branch is in an off state, and is most passed through afterwards
Hydrogenation stations high-pressure hydrogen storage adapter tube 24 is some or one group of container in hydrogenation stations high-pressure hydrogen storage 25a, 25b and 25c
Carry out tonifying Qi.Wherein, height is suitably lower than according to its exporting hydrogen temperature in the heat transfer area of the design liquid hydrogen vaporizer first order 12
Pressure hydrogen precooling temperature is designed, and the heat transfer area of the liquid hydrogen vaporizer second level 20 is according to its exporting hydrogen temperature close to environment
Temperature is designed.Therefore, when without pre- refrigeration duty, system can still convert liquid hydrogen to the hydrogen of environment temperature.
When having vehicle filling, that is, there is pre-cooling demand, control system (being not drawn into figure) is according to the hydrogen temperature received
Spend sensor 54b, 54c signal (into and out of the hydrogen temperature of forecooler) and hydrogen flowmeter 56 signal (charging line
Hydrogen flowing quantity), current pre- refrigeration duty is calculated according to the following formula:
In formula,For unit time pre- refrigeration duty,For high pressure hydrogen mass flow, C measured by hydrogen flowmeter 56p
For hydrogen specific heat at constant pressure, Tin、ToutTo be respectively forecooler import and export hydrogen that hydrogen temperature sensor 54b and 54c are measured
Temperature.
Control system is based on carrying out using revolving speed (flow) of formula (1) the counted pre- refrigeration duty to pre-cooling liquid circulating pump 43
It adjusts, the temperature of temperature sensor 54c is controlled in set range.At the same time, control system is according to receiving
Signal (the pre-cooling liquid out temperature of heat exchanger between liquid hydrogen vaporizer grade) and the pre-cooling of liquid temperature sensor 57a, 57b is pre-chilled
The signal (pre-cooling liquid recycle stream amount) of flow meters 58, in conjunction with signal (the liquid hydrogen vaporizer first order of hydrogen temperature sensor 54a
Hydrogen outlet temperature), the state by controlling continuously adjustable type automatic diverter valve 14 (is managed where heat exchanger between liquid hydrogen vaporizer grade
Relative opening degree between road 15 and its bypass line 18) come adjust flow through liquid hydrogen vaporizer grade between pipeline 15 where heat exchanger it is low
Warm hydrogen flowing quantity, so that the temperature value that pre-cooling liquid temperature sensor 57b is measured is controlled in set range.
Pre-cooling liquid charging line 50, hand stop valve 51 and pre-cooling liquid filling interface 52 are used to fill pre-cooling liquid circulation line
Dress pre-cooling liquid.It can be pre-cooling liquid circulation line supplement by opening hand stop valve 51 when hydrogenation stations are in non-operating state
Liquid is pre-chilled.
Embodiment 3
Fig. 3 is the structure chart of L-CH2 type hydrogenation stations heat management system embodiment 3 of the present invention.The L-CH2 type of the present embodiment adds
Hydrogen station heat management system is throttled based on bypass line, as shown in figure 3, control system, liquid hydrogen tank car, liquid are equally omitted in Fig. 3
Hydrogen tank car low temperature liquid hydrogen storage tank into hydrogenation stations unloads the pipeline of liquid.This example and example 2 are the difference is that using automatically may be used
Regulation type throttling device 59 replaces continuously adjustable type automatic diverter valve 14, by adjust automatic adjustable type throttling set 59 come
Flow resistance of the bypass line 18 relative to pipeline 15 is controlled, to control the low temperature hydrogen air-flow between liquid hydrogen vaporizer grade in heat exchanger
Amount achievees the purpose that control heat exchanger pre-cooling liquid outlet temperature.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
Used herein a specific example illustrates the principle and implementation of the invention, and above embodiments are said
It is bright to be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, foundation
Thought of the invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification is not
It is interpreted as limitation of the present invention.
Claims (9)
1. a kind of L-CH2 type hydrogenation stations heat management system characterized by comprising the first vaporizer, Intermediate Heat Exchanger, second
Vaporizer, gas mixer and hydrogen forecooler；The low pressure liquid hydrogen storage of the inlet connection hydrogenation stations of first vaporizer
The liquid outlet of tank, first vaporizer are used to be vaporized liquid hydrogen and tentatively overheat；The gas outlet of first vaporizer
The tube side of the Intermediate Heat Exchanger is accessed between the air inlet of second vaporizer, the gas outlet of second vaporizer connects
It is connected to the first interface of gas mixer；The second interface of the gas mixer connects with hydrogenation stations high-pressure hydrogen storage
Pipe is connected；The third interface of the gas mixer is connect with the hydrogen inlet of the hydrogen forecooler, and the hydrogen is pre-
The hydrogen outlet of cooler is connected to high pressure hydrogen air filling gun, when vehicle fills hydrogen, comes from the gas mixer third
The hydrogen of interface fills after the hydrogen forecooler is cooling into vehicle；The pre- cold liquid inlet and pre-cooling of the hydrogen forecooler
The shell side that the Intermediate Heat Exchanger is accessed between liquid outlet is changed by the pre-cooling liquid of hydrogen forecooler outflow by the centre
In hot device after the cooling of hydrogen, flows back into the hydrogen forecooler and recycled.
2. L-CH2 type hydrogenation stations heat management system according to claim 1 characterized by comprising bypass line, institute
The entrance for stating bypass line is connected to pipe between the gas outlet of first vaporizer and the hydrogen inlet of the Intermediate Heat Exchanger
On the road, the outlet of the bypass path be connected to the Intermediate Heat Exchanger hydrogen outlet and second vaporizer air inlet it
Between pipeline on, the bypass line forms in parallel with the tube side access of the Intermediate Heat Exchanger.
3. L-CH2 type hydrogenation stations heat management system according to claim 2, which is characterized in that when no vehicle fills hydrogen
When, the bypass line connection, the tube side access of the Intermediate Heat Exchanger disconnects.
4. L-CH2 type hydrogenation stations heat management system according to claim 3, which is characterized in that further include: continuous commutation dress
It sets, the continuous reversing arrangement is connected to the bypass line entrance and connects with the upstream of the hydrogen inlet of the Intermediate Heat Exchanger
Place；When there is vehicle to fill hydrogen, the continuous reversing arrangement is by adjusting the Intermediate Heat Exchanger tube side access and the side
The ratio between the discharge coefficient on siphunculus road flows through the hydrogen flowing quantity of the Intermediate Heat Exchanger tube side to adjust.
5. L-CH2 type hydrogenation stations heat management system according to claim 2, which is characterized in that further include: discharge coefficient can
The throttling set of tune, the throttling set are set on the bypass line, flow through the Intermediate Heat Exchanger tube side for adjusting
Hydrogen flowing quantity.
6. L-CH2 type hydrogenation stations heat management system according to claim 1, which is characterized in that further include: circulating pump, institute
It states on the pre-cooling liquid circulation line that circulating pump is connected between the Intermediate Heat Exchanger and the hydrogen forecooler, for realizing pre-cooling
Circulation of the liquid between the hydrogen forecooler and the Intermediate Heat Exchanger.
7. L-CH2 type hydrogenation stations heat management system according to claim 6, which is characterized in that the circulating pump is frequency conversion
Type circulating pump, the frequency conversion type circulating pump adjusts the circular flow of pre-cooling liquid by adjusting revolving speed, pre- to adjust the hydrogen
The hydrogen temperature of cooler outlet.
8. L-CH2 type hydrogenation stations heat management system according to claim 7, which is characterized in that further include: the first temperature passes
Sensor, second temperature sensor, third temperature sensor and flowmeter；First temperature sensor is set to first vapour
On the outlet pipe for changing device, the hydrogen temperature of the outlet pipe for measuring first vaporizer；The second temperature sensing
Device is set to the pre-cooling liquid entrance of the Intermediate Heat Exchanger, for measuring the pre-cooling liquid feed liquor temperature of the Intermediate Heat Exchanger；
The third temperature sensor is set to the pre-cooling liquid exit of the Intermediate Heat Exchanger, for detecting the outflow intermediate heat exchange
The pre-cooling liquid of device goes out liquid temperature；The flowmeter is set to the pre-cooling liquid between the Intermediate Heat Exchanger and the hydrogen forecooler
On circulation line, for detecting the pre-cooling liquid recycle stream amount of the Intermediate Heat Exchanger.
9. L-CH2 type hydrogenation stations heat management system according to claim 8, which is characterized in that first vaporizer and
Second vaporizer is air temperature type vaporizer.
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| CN201910135867.0A CN109708000B (en) | 2019-02-25 | 2019-02-25 | L-CH2 type hydrogen station heat management system |
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| CN113074315A (en) * | 2021-03-01 | 2021-07-06 | 国网浙江省电力有限公司电力科学研究院 | Heat management system and heat management control method of hydrogen station |
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| CN117570361B (en) * | 2023-12-13 | 2024-06-07 | 烟台东德实业有限公司 | Liquid hydrogen station hydrogenation system with high heat energy utilization rate |
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