CN114985143A - Liquid atomization system, vehicle and liquid atomization method - Google Patents
Liquid atomization system, vehicle and liquid atomization method Download PDFInfo
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- CN114985143A CN114985143A CN202210622804.XA CN202210622804A CN114985143A CN 114985143 A CN114985143 A CN 114985143A CN 202210622804 A CN202210622804 A CN 202210622804A CN 114985143 A CN114985143 A CN 114985143A
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- 238000009688 liquid atomisation Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 203
- 238000007664 blowing Methods 0.000 claims abstract description 57
- 238000001179 sorption measurement Methods 0.000 claims abstract description 52
- 238000010438 heat treatment Methods 0.000 claims description 36
- 238000004891 communication Methods 0.000 claims description 30
- 238000001514 detection method Methods 0.000 claims description 16
- 238000005192 partition Methods 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 6
- 238000005507 spraying Methods 0.000 abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 13
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 12
- 239000001257 hydrogen Substances 0.000 abstract description 12
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 12
- 239000000446 fuel Substances 0.000 abstract description 10
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 238000000889 atomisation Methods 0.000 description 11
- 239000012530 fluid Substances 0.000 description 8
- 238000013461 design Methods 0.000 description 5
- 238000005213 imbibition Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 3
- 238000010926 purge Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000010408 sweeping Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
- B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
- B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
- B05B12/081—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to the weight of a reservoir or container for liquid or other fluent material; responsive to level or volume of liquid or other fluent material in a reservoir or container
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
- H01M8/0662—Treatment of gaseous reactants or gaseous residues, e.g. cleaning
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Jet Pumps And Other Pumps (AREA)
- Special Spraying Apparatus (AREA)
Abstract
The invention belongs to the technical field of hydrogen fuel cell vehicles, and discloses a liquid atomization system, a vehicle and a liquid atomization method. According to the invention, on the basis of the liquid storage device, the negative pressure adsorption device and the positive pressure blowing device are matched with each other, liquid suction operation is carried out through negative pressure, spraying operation is carried out through positive pressure, the energy consumption is lower, and the device is more suitable for a low-temperature environment compared with a water pump drive.
Description
Technical Field
The invention relates to the technical field of hydrogen fuel cell vehicles, in particular to a liquid atomization system, a vehicle and a liquid atomization method.
Background
The hydrogen fuel cell on the hydrogen fuel cell vehicle is a device for generating electric energy through the chemical reaction of hydrogen and oxygen, aiming at the characteristic that the hydrogen and oxygen react to generate water, the tail gas discharge device on the hydrogen fuel cell vehicle is provided with a noise elimination and condensation functional structure, and in the discharge process, water vapor and small liquid drops are condensed into liquid water and discharged to the surrounding environment.
However, when the ambient temperature is low, the hydrogen fuel cell vehicle directly discharges liquid water to the road surface, which may cause the road to freeze, and there is a serious traffic safety hidden danger.
Disclosure of Invention
The invention aims to provide a liquid atomization system, a vehicle and a liquid atomization method, which can adapt to a low-temperature environment and are low in energy consumption.
In order to achieve the purpose, the invention adopts the following technical scheme:
a liquid atomization system comprising:
the liquid storage device is provided with a pressure-bearing chamber and a buffer chamber, and the buffer chamber is configured to receive liquid in the condenser;
the one-way communication assembly is used for enabling the liquid in the buffer chamber to flow to the pressure bearing chamber;
the atomizing spray head is communicated with the pressure bearing chamber;
the pressure-bearing chamber is communicated with the negative pressure adsorption device, and the negative pressure adsorption device can adsorb liquid in the buffer chamber into the pressure-bearing chamber through negative pressure adsorption;
the pressure-bearing chamber is communicated with the positive pressure blowing device, and the positive pressure blowing device can atomize and spray out the liquid in the pressure-bearing chamber through the atomizing nozzle by pressurization.
Preferably, the liquid storage device comprises:
a liquid storage tank;
the partition plate is arranged in the liquid storage tank and divides the inner cavity of the liquid storage tank into the pressure bearing chamber and the cache chamber;
the first liquid level detection device is arranged in the pressure bearing chamber;
and the second liquid level detection device is arranged in the buffer chamber.
Preferably, the liquid storage device further comprises a first heating device, and the first heating device is arranged on the liquid storage tank and can heat the liquid in the liquid storage tank.
Preferably, the one-way communication assembly includes:
the first pipe joint is arranged on the liquid storage device and communicated with the pressure bearing chamber;
the second pipe joint is arranged on the liquid storage device and communicated with the cache chamber;
the two ends of the one-way communication pipeline are respectively communicated with the first pipe joint and the second pipe joint;
and the one-way valve is arranged on the one-way communication pipeline.
Preferably, the negative pressure adsorption device includes:
a vacuum pump;
a vacuum tank;
the two ends of the first vacuum pipeline are respectively communicated with the vacuum pump and the vacuum tank;
the two ends of the second vacuum pipeline are respectively communicated with the vacuum tank and the pressure bearing chamber;
the negative pressure valve is arranged on the second vacuum pipeline, when the negative pressure valve cuts off the second vacuum pipeline, the vacuum pump can vacuumize the vacuum tank, and when the negative pressure valve is switched on the second vacuum pipeline, the vacuum tank can adsorb liquid in the cache chamber to the pressure bearing chamber through negative pressure adsorption.
Preferably, the positive pressure blowing device includes:
the air storage tank is internally stored with compressed air;
the two ends of the first blowing pipeline are respectively communicated with the gas storage tank and the pressure bearing chamber;
and a positive pressure valve disposed on the first purge line.
Preferably, the positive pressure blowing device further includes:
the two ends of the second blowing pipeline are respectively communicated with the atomizing nozzle and the pressure bearing chamber, and the first blowing pipeline is communicated with the pressure bearing chamber through the second blowing pipeline;
and the bypass valve is arranged on the second blowing pipeline and is positioned on one side, facing the atomizing nozzle, of the communication position of the first blowing pipeline and the second blowing pipeline.
Preferably, the atomizing nozzle further comprises an ejection communicating component, the ejection communicating component comprises an ejection pipeline and an ejection valve, two ends of the ejection pipeline are respectively communicated with the atomizing nozzle and the pressure bearing chamber, and the ejection valve is arranged on the ejection pipeline.
A vehicle comprises the liquid atomization system, and the buffer chamber is communicated with a condenser of a tail exhaust pipe of the vehicle.
A liquid atomization method, which uses the liquid atomization system, comprises:
the liquid level in the buffer chamber has a high liquid level and a low liquid level;
when the liquid level of the buffer chamber is not lower than the high liquid level, the negative pressure adsorption device is started, and the liquid in the buffer chamber is adsorbed into the pressure-bearing chamber through negative pressure adsorption;
when the liquid level of the buffer chamber is not higher than the low liquid level, the negative pressure adsorption device is closed.
The invention has the beneficial effects that:
according to the invention, on the basis of the liquid storage device, the negative pressure adsorption device and the positive pressure blowing device are matched with each other, liquid suction operation is carried out through negative pressure, spraying operation is carried out through positive pressure, the energy consumption is lower, and the device is more suitable for a low-temperature environment compared with water pump driving.
Drawings
FIG. 1 is a first schematic diagram of a liquid atomization system according to an embodiment of the present disclosure;
FIG. 2 is a schematic structural diagram of a second liquid atomization system according to an embodiment of the invention;
FIG. 3 is a flow chart of heating control according to an embodiment of the present invention;
FIG. 4 is a first flowchart of negative pressure imbibition control according to an embodiment of the invention;
FIG. 5 is a second flowchart of negative pressure suction control according to an embodiment of the present invention;
FIG. 6 is a flow chart of positive pressure atomization control according to an embodiment of the present invention;
FIG. 7 is a flow chart of drainage control according to an embodiment of the present invention;
fig. 8 is a flow chart of vacuum control according to an embodiment of the present invention.
In the figure:
100. a condenser;
1. a liquid storage device;
11. a liquid storage tank; 111. a pressure bearing chamber; 112. a buffer chamber; 12. a partition plate; 13. a first liquid level detection device; 14. a second liquid level detection device; 15. a first heating device;
2. a one-way communication assembly;
21. a first pipe joint; 22. a second pipe joint; 23. a one-way communication pipeline; 24. a one-way valve;
3. an atomizing spray head;
4. a negative pressure adsorption device;
41. a vacuum pump; 42. a vacuum tank; 43. a first vacuum line; 44. a second vacuum line; 45. a negative pressure valve;
5. a positive pressure blowing device;
51. a gas storage tank; 52. a first blowing pipeline; 53. a positive pressure valve; 54. a second blowing pipeline; 55. a bypass valve;
6. a discharge communicating member;
61. a blow-out line; 62. a blow-out valve; 63. a second heating device;
7. a cache connectivity component; 71. caching a pipeline; 72. a third heating device;
8. a drainage assembly; 81. a drain line; 82. and (6) draining the water valve.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar parts throughout or parts having the same or similar functions. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediary, a connection between two elements, or an interaction between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature being in contact not directly but with another feature therebetween. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
Example one
As shown in fig. 1-2, the present invention provides a liquid atomization system, which includes a liquid storage device 1, a one-way communication component 2, an atomization nozzle 3, a negative pressure adsorption device 4, and a positive pressure blowing device 5. The liquid storage device 1 is provided with a pressure bearing chamber 111 and a buffer chamber 112, the buffer chamber 112 is configured to receive liquid in the condenser 100, the liquid in the buffer chamber 112 can flow to the pressure bearing chamber 111 through the one-way communication assembly 2, the atomizing nozzle 3 is communicated with the pressure bearing chamber 111, the pressure bearing chamber 111 is communicated with the negative pressure adsorption device 4, the negative pressure adsorption device 4 can adsorb the liquid in the buffer chamber 112 to the pressure bearing chamber 111 through negative pressure adsorption, the pressure bearing chamber 111 is communicated with the positive pressure blowing device 5, and the positive pressure blowing device 5 can atomize and eject the liquid in the pressure bearing chamber 111 through the atomizing nozzle 3 through pressurization.
In the invention, on the basis of the liquid storage device 1, the negative pressure adsorption device 4 and the positive pressure blowing device 5 are matched with each other, liquid suction operation is carried out through negative pressure, spraying operation is carried out through positive pressure, the energy consumption is lower, and the device is more suitable for low-temperature environment compared with water pump driving.
Specifically, the liquid storage apparatus 1 includes a liquid storage tank 11, a partition plate 12, a first liquid level detection device 13, and a second liquid level detection device 14. The partition plate 12 is disposed in the liquid storage tank 11, and divides an inner cavity of the liquid storage tank 11 into a pressure bearing chamber 111 and a buffer chamber 112, the first liquid level detection device 13 is disposed in the pressure bearing chamber 111 and is used for monitoring a liquid level in the pressure bearing chamber 111, and the second liquid level detection device 14 is disposed in the buffer chamber 112 and is used for monitoring a liquid level in the buffer chamber 112. The liquid storage tank 11 is matched with the partition plate 12 to combine the pressure bearing chamber 111 and the buffer chamber 112 together, so that the structure is compact.
In this embodiment, the top of the liquid storage tank 11 is provided with a communication port for the pressure-bearing chamber 111 and the buffer chamber 112, respectively, the pressure-bearing chamber 111 is communicated with the negative pressure adsorption device 4 through the communication port, and the buffer chamber 112 is communicated with the outside atmosphere through the communication port; the bottom of the liquid storage tank 11 is provided with a conduction port for the pressure bearing chamber 111 and the buffer chamber 112 respectively, and the conduction port of the pressure bearing chamber 111 is communicated with the conduction port of the buffer chamber 112 through the one-way communication component 2; an external interface is arranged on the upper part of one side of the liquid storage tank 11 and is opposite to the pressure bearing chamber 111, and the pressure bearing chamber 111 is communicated with the positive pressure blowing device 5 through the external interface; an external interface is provided for the buffer chamber 112 at the lower portion of the other side of the liquid storage tank 11, and the buffer chamber 112 is communicated with the buffer chamber of the condenser 100 through the external interface.
More specifically, the first liquid level detection device 13 and the second liquid level detection device 14 are both existing liquid level sensors, and are both connected to a control device, and the control device controls the negative pressure adsorption device 4 and the positive pressure blowing device 5 to act according to the liquid level signals transmitted by the liquid level sensors.
In this embodiment, the liquid storage device 1 further includes a first heating device 15, the first heating device 15 is disposed on the liquid storage tank 11 and can heat the liquid in the liquid storage tank 11, so as to prevent the liquid in the liquid storage tank 11 from freezing and affecting the operation of the negative pressure adsorption device 4 and the positive pressure blowing device 5 when the air temperature is too low.
Specifically, the one-way communication assembly 2 includes a first pipe joint 21, a second pipe joint 22, a one-way communication line 23, and a one-way valve 24. The first pipe joint 21 is arranged on the liquid storage device 1 and communicated with the pressure-bearing chamber 111, the second pipe joint 22 is arranged on the liquid storage device 1 and communicated with the buffer chamber 112, two ends of the one-way communication pipeline 23 are respectively communicated with the first pipe joint 21 and the second pipe joint 22, and the one-way valve 24 is arranged on the one-way communication pipeline 23 and configured to block fluid from flowing into the buffer chamber 112 from the pressure-bearing chamber 111. The device is simple in structure and can safely and reliably achieve the purpose of one-way communication.
More specifically, the first pipe joint 21 is directly fixed at the conduction port of the pressure bearing chamber 111 at the bottom of the liquid storage tank 11 through a fastener, and is provided with a pressure switch or a pressure sensor for detecting the liquid pressure in the pipeline in real time, and the second pipe joint 22 is directly fixed at the conduction port of the buffer chamber 112 at the bottom of the liquid storage tank 11 through a fastener, and is provided with a temperature switch or a temperature sensor for detecting the liquid temperature in the pipeline in real time.
In the present embodiment, the atomizer 3 is a single-fluid nozzle or a two-fluid nozzle.
Specifically, the negative pressure adsorption apparatus 4 includes a vacuum pump 41, a vacuum tank 42, a first vacuum line 43, a second vacuum line 44, and a negative pressure valve 45. The two ends of the first vacuum pipeline 43 are respectively communicated with the vacuum pump 41 and the vacuum tank 42, the two ends of the second vacuum pipeline 44 are respectively communicated with the vacuum tank 42 and the pressure-bearing chamber 111, the negative pressure valve 45 is arranged on the second vacuum pipeline 44, when the negative pressure valve 45 cuts off the second vacuum pipeline 44, the vacuum pump 41 can vacuumize the vacuum tank 42, and when the negative pressure valve 45 is communicated with the second vacuum pipeline 44, the vacuum tank 42 can absorb liquid in the buffer chamber 112 to the pressure-bearing chamber 111 through negative pressure absorption.
In the present embodiment, the negative pressure valve 45 is a two-position two-way electromagnetic valve, the second vacuum line 44 communicates with a communication port at the top of the pressure receiving chamber 111, and the check valve 24 is further provided between the pressure receiving chamber 111 and the negative pressure valve 45 in the second vacuum line 44.
Specifically, the positive pressure blower 5 includes an air tank 51, a first blowing line 52, and a positive pressure valve 53. Wherein, the air storage tank 51 stores compressed air, both ends of the first blowing pipeline 52 are respectively communicated with the air storage tank 51 and the pressure-bearing chamber 111, and the positive pressure valve 53 is arranged on the first blowing pipeline 52 and is used for controlling the on-off of the first blowing pipeline 52. Compressed air is released through the air storage tank 51 to pressurize the pressure bearing chamber 111, liquid in the pressure bearing chamber 111 is blown, energy is saved, efficiency is high, a vehicle braking system can be fully utilized, and the air storage tank 51 is pressurized by the vehicle braking system.
More specifically, the positive pressure blowing device 5 further includes a second blowing line 54 and a bypass valve 55. The two ends of the second blowing pipeline 54 are respectively communicated with the atomizing nozzle 3 and the pressure-bearing chamber 111, the first blowing pipeline 52 is communicated with the pressure-bearing chamber 111 through the second blowing pipeline 54, and the bypass valve 55 is arranged on the second blowing pipeline 54 and is positioned at the side, facing the atomizing nozzle 3, of the communication position of the first blowing pipeline 52 and the second blowing pipeline 54 and used for controlling the on-off of the second blowing pipeline 54. When the atomizer 3 is a two-fluid nozzle, the second blowing line 54 and the bypass valve 55 cooperate with each other, so that the two-fluid nozzle can be matched, and more efficient atomization is realized.
In this embodiment, the positive pressure valve 53 is a two-position two-way solenoid valve, and the bypass valve 55 is an electrically controlled air flow proportional valve, and is normally closed.
Specifically, the atomizing nozzle 3 is communicated with the pressure-bearing chamber 111 through the spraying communicating component 6, the spraying communicating component 6 comprises a spraying pipeline 61 and a spraying valve 62, two ends of the spraying pipeline 61 are respectively communicated with the atomizing nozzle 3 and the pressure-bearing chamber 111, and the spraying valve 62 is arranged on the spraying pipeline 61 and controls the on-off of the spraying pipeline 61. Through setting up blowout intercommunication subassembly 6 for atomizer 3's setting is more nimble.
In the present embodiment, the discharge line 61 is communicated with the pressure receiving chamber 111 through the first pipe joint 21, and the discharge valve 62 is a solenoid valve and is normally closed.
More specifically, the ejection communicating assembly 6 further includes a second heating device 63, and the second heating device 63 is disposed on the ejection pipeline 61 and can heat the liquid in the ejection pipeline 61, so that smooth operation of spraying in a low-temperature environment can be ensured.
Specifically, the buffer chamber 112 and the buffer cavity of the condenser 100 are communicated through the buffer communication assembly 7, the buffer communication assembly 7 includes a buffer pipeline 71, and two ends of the buffer pipeline 71 are respectively communicated with the buffer chamber 112 and the buffer cavity of the condenser 100. The buffer pipeline 71 is arranged, so that the arrangement of the liquid storage tank 11 is more flexible.
In the present embodiment, the buffer pipe line 71 communicates with the buffer chamber 112 through the second pipe joint 22.
More specifically, the buffer communication assembly 7 further includes a third heating device 72, and the third heating device 72 is disposed on the buffer pipeline 71 and can heat the liquid in the buffer pipeline 71, so as to ensure that the fluid in the condenser 100 can be smoothly guided out in the low-temperature environment.
In this embodiment, the first heating device 15, the second heating device 63, and the third heating device 72 are all electric heating films, and are respectively laid on the outer walls of the liquid storage tank 11, the ejection pipeline 61, and the buffer pipeline 71, and are respectively connected to the control device, and the control device controls the start and stop of the first heating device 15, the second heating device 63, and the third heating device 72 according to the ambient temperature obtained by the real-time monitoring of the temperature sensor.
Specifically, liquid atomizing system still includes drainage subassembly 8, and drainage subassembly 8 includes drain pipe 81 and drain valve 82, and drain pipe 81 one end communicates in one-way communication pipeline 23, is located the district section between first coupling 21 and the check valve 24, and the other end is used for the drainage, and drain valve 82 sets up in drain pipe 81 for the break-make of control drain pipe 81, drain valve 82 is the solenoid valve specifically in this embodiment, and the normal close sets up.
Example two
The invention also provides a vehicle which comprises the liquid atomization system, wherein a buffer chamber 112 of a liquid storage device 1 in the liquid atomization system is communicated with a buffer chamber of a condenser 100 of a tail pipe of the vehicle, and an air storage tank 51 of a positive pressure blowing device 5 in the liquid atomization system is pressurized and stored by a vehicle brake system.
The vehicle is a hydrogen fuel cell vehicle, on the basis of the liquid storage device 1, the negative pressure adsorption device 4 and the positive pressure blowing device 5 are matched with each other, liquid suction operation is carried out through negative pressure, spraying operation is carried out through positive pressure, energy consumption is low, the vehicle is more suitable for a low-temperature environment compared with water pump driving, and in addition, the positive pressure blowing device 5 fully utilizes a braking system of the vehicle to carry out pressurization and gas storage, so that the vehicle is more efficient.
In specific design, the hydrogen consumption of the fuel cell stack is about 0.9-1.2g/(min kW), the power of the matched fuel cells of the city bus is 60kW, the hydrogen consumption of the operation peak power is about 60g/min, the generation amount of reaction water per minute is about 540gV 0-0.54L, the hydrogen consumption of the operation average power is about 20g/min, and the generation amount of water per minute is about 180gV 01-0.18L.
The design of the liquid storage tank 11 and the negative pressure adsorption device 4 is carried out by adopting the working condition of peak power.
The volume of the pressure-bearing chamber 111 is set as V1, the volume of the buffer chamber 112 is set as V2, the volume of the buffer cavity of the condenser 100 is set as V3, the volume of the vacuum tank 42 is set as V4, and the bottom surface of the inner cavity of the liquid storage tank 11 is taken as a reference, the highest liquid level height position H1 of V1, the highest liquid level height position H2 of V2, the highest liquid level height position H3 of V3, V2, V1, V2+ V3, H2, H1 and H3 are set as follows.
According to the volume design required by the compact design of the vehicle body arrangement and parts, the following indexes are referred to: v1 is 2-2.5 times of V0; v2 is 1.5-2 times of V0; v3 is 0.6 times of V0; the V4 is 3-4 times of V0.
Taking city public transportation as an example, 60kW fuel cells correspond to design parameters:
volume parameter: 1.2L of V1; taking 1L from V2; taking 0.3L of V3; v4 was 3L.
Efficiency of the vacuum pump 41: 3L of volume, and the time from atmospheric pressure to vacuum degree of-70 kPa is less than or equal to 7 s.
Atomizing parameter selection: the atomization flow is 3L/min, the diameter of the atomized liquid drop is less than 30 μm, and the driving pressure of the liquid is more than or equal to 0.7 MPa.
EXAMPLE III
The invention also provides a liquid atomization method, which uses the liquid atomization system and comprises the following steps: the liquid level in the buffer chamber 112 has a high liquid level and a low liquid level; when the liquid level of the buffer chamber 112 is not lower than the high liquid level, the negative pressure adsorption device 4 is started, and the liquid in the buffer chamber 112 is adsorbed into the pressure-bearing chamber 111 through negative pressure adsorption; when the liquid level of the buffer chamber 112 is not higher than the low liquid level, the negative pressure adsorption device 4 is closed.
In the liquid atomization method, the liquid level in the buffer chamber 112 is subjected to liquid suction operation by the negative pressure adsorption device 4 and spraying operation by the positive pressure blowing device 5, so that the energy consumption is low, the liquid atomization method is more suitable for a low-temperature environment compared with water pump driving, and the liquid in the buffer chamber 112 can be atomized and sprayed in time in the low-temperature environment.
In the present embodiment, the liquid atomization method specifically includes methods of heating control, negative pressure suction control, positive pressure atomization control, drainage control, and vacuum control.
As shown in fig. 3, the specific method of heating control includes the following steps:
step one, judging whether the external environment temperature is less than a first set temperature.
In this step, the negative pressure valve 45, the positive pressure valve 53, the bypass valve 55, the blow-out valve 62, and the drain valve 82 are closed, the first set temperature is 5 ℃, and the outside environment temperature is detected by the outside temperature detecting means, specifically, an environment temperature sensor or a temperature switch.
And step two, when the external environment temperature is lower than the first set temperature, the heating device starts heating.
In this step, the heating device includes a first heating device 15, a second heating device 63 and a third heating device 72, the first heating device 15 is disposed on the liquid storage tank 11, the second heating device 63 is disposed on the ejection pipeline 61, and the third heating device 72 is disposed on the buffer pipeline 71, so that the flow of the condensed water in the liquid atomization system is smoother by activating the heating devices.
And step three, judging whether the liquid temperature in the liquid atomization system is higher than a second set temperature.
The second set temperature is 40 ℃, which is greater than the first set temperature, and in this step, the liquid temperature inside the liquid atomization system is detected by an internal temperature detection device, specifically a temperature switch or a temperature sensor, and the detection of the liquid temperature inside the pipeline is performed by the temperature switch or the temperature sensor in the second pipe joint 22.
And step four, when the temperature of the liquid in the liquid atomization system is higher than a second set temperature, the heating device stops heating.
The negative pressure imbibition control is connected after the heating control, and the specific method comprises the following steps:
the liquid level in the pressure-receiving chamber 111 has a high liquid level, a medium liquid level, and a low liquid level, wherein the high liquid level is H1 described above, the medium liquid level is half of H1, and the first liquid level detection device 13 detects whether the liquid level in the pressure-receiving chamber 111 reaches the high liquid level, the medium liquid level, and the low liquid level described above.
The liquid level in the buffer chamber 112 has a high liquid level and a low liquid level, wherein the high liquid level is H2 as described above, and the second liquid level detection device 14 detects whether the liquid level in the buffer chamber 112 reaches the high liquid level and the low liquid level as described above.
As shown in fig. 4, when the buffer chamber 112 is taken as a reference:
step one, judging whether the liquid level of the buffer chamber 112 is not lower than a high liquid level.
And step two, when the liquid level of the buffer chamber 112 is not lower than the high liquid level, the negative pressure adsorption device 4 is started, and the liquid in the buffer chamber 112 is adsorbed into the pressure-bearing chamber 111 through negative pressure adsorption.
In this step, when the liquid level in the buffer chamber 112 reaches the high liquid level, the positive pressure valve 53, the bypass valve 55, the ejection valve 62, and the drain valve 82 are closed, and the negative pressure adsorption device 4 is activated to perform negative pressure adsorption by opening the negative pressure valve 45, so that the liquid level in the buffer chamber 112 is prevented from being excessively high.
And step three, judging whether the liquid level of the buffer chamber 112 is not higher than the low liquid level.
And step four, when the liquid level of the buffer chamber 112 is not higher than the low liquid level, closing the negative pressure adsorption device 4.
In this step, when the liquid level in the buffer chamber 112 reaches the low liquid level, the negative pressure adsorption device 4 is closed by closing the negative pressure valve 45 to avoid the liquid level in the buffer chamber 112 from being too low.
As shown in fig. 5, when the pressure-containing chamber 111 is taken as a reference:
step one, judging whether the liquid level of the pressure bearing chamber 111 is not higher than the middle liquid level.
And step two, when the liquid level of the pressure-bearing chamber 111 is not higher than the medium liquid level, the negative pressure adsorption device 4 is started, and the liquid in the buffer chamber 112 is adsorbed into the pressure-bearing chamber 111 through negative pressure adsorption.
In this step, the positive pressure valve 53, the bypass valve 55, the discharge valve 62, and the drain valve 82 are closed, and when the liquid level in the pressure receiving chamber 111 reaches the middle liquid level, the negative pressure adsorption device 4 is activated by opening the negative pressure valve 45 to avoid the liquid level in the pressure receiving chamber 111 from being excessively low.
And step three, judging whether the liquid level of the pressure bearing chamber 111 is not lower than the high liquid level.
And step four, when the liquid level of the pressure bearing chamber 111 is not lower than the high liquid level, closing the negative pressure adsorption device 4.
In this step, when the liquid level in the buffer chamber 112 reaches the low liquid level, the negative pressure adsorption device 4 is closed by closing the negative pressure valve 45 to avoid the liquid level in the pressure bearing chamber 111 from being too high.
As shown in fig. 6, the positive pressure atomization control, following the negative pressure imbibition control, includes the following steps:
step one, the positive pressure blowing device 5 is started, and liquid in the pressure-bearing chamber 111 is atomized and sprayed out through the atomizing nozzle 3 by pressurization.
In this step, the negative pressure valve 45, the bypass valve 55, the blow-out valve 62, and the drain valve 82 are closed, and the positive pressure blower 5 is activated by opening the positive pressure valve 53.
And step two, judging whether the liquid driving pressure of the liquid atomization system is less than 0.7 MPa.
In this step, the liquid driving pressure in the communication line in front of the atomizer head 3 is detected by means of an internal pressure measuring device, in particular a pressure switch or a pressure sensor, which detects the driving pressure in the line by means of a pressure switch or a pressure sensor in the first pipe connection 21.
And step three, when the driving pressure of the liquid is not less than 0.7MPa, carrying out spraying operation.
In this step, when the atomizer 3 is a single-fluid nozzle, the spray operation is performed by opening the discharge valve 62, and when the atomizer 3 is a two-fluid nozzle, the spray operation is performed by opening the discharge valve 62 and the bypass valve 55.
And step four, judging whether the liquid level of the pressure bearing chamber 111 is higher than the low liquid level.
And step five, when the liquid level of the pressure-bearing chamber 111 is not higher than the low liquid level, the positive pressure blowing device 5 works for a first set time length in a delayed mode.
In this step, the first set time period is 20S, and after that, the positive pressure blowing device 5 is turned off.
And step six, when the positive pressure blowing device 5 delays the working wire harness, if the positive pressure atomization control of the next round is carried out, the negative pressure imbibition control is firstly operated, and if the positive pressure atomization control of the next round is not carried out, the drainage control is carried out.
As shown in fig. 7, the drainage control, following the positive pressure atomization control, includes the following steps:
step one, the negative pressure adsorption device 4 is started.
After the positive pressure atomization control is finished, the liquid level of the pressure-containing chamber 111 is emptied, and then this step is continued, in which the positive pressure valve 53, the bypass valve 55, the blow-out valve 62, and the drain valve 82 are closed, and the negative pressure adsorption device 4 is started to perform negative pressure adsorption by opening the negative pressure valve 45.
And step two, judging whether the liquid level of the buffer chamber 112 is not higher than the low liquid level.
And step three, when the liquid level of the buffer chamber 112 is not higher than the low liquid level, delaying the imbibition for a second set time, and then closing the negative pressure adsorption device 4.
In this step, the suction is delayed by continuing to start the negative pressure adsorption device 4, the second set time is 10S, and after that, the negative pressure adsorption device 4 is closed.
And step four, judging whether the external environment temperature is not less than the first set temperature.
In this step, the first set temperature is 5 ℃.
And step five, when the external environment temperature is not less than the first set temperature, performing sweeping and blowing in a straight line, and when the external environment temperature is less than the first set temperature, performing positive pressure atomization control and then performing sweeping and blowing.
In this step, the negative pressure valve 45, the bypass valve 55, and the discharge valve 62 are closed, and purging is performed by opening the positive pressure valve 53 and the drain valve 82, and the time for performing one purging is 10S.
When the sweep is performed, the positive pressure blowing device 5 is activated to discharge the liquid in the pressure receiving chamber 111 through the drain unit 8 by pressurization.
As shown in fig. 8, the specific method of vacuum control includes the following steps:
step one, judging whether the pressure in the vacuum tank 42 is larger than a first set pressure.
In this step, the first set pressure was 50 kPa.
And step two, when the pressure in the vacuum tank 42 is greater than the first set pressure, the vacuum pump 41 is started.
And step three, judging whether the pressure in the vacuum tank 42 is not more than a second set pressure.
In this step, the second set pressure is set to be lower than the first set pressure, and is set to be 25kPa
And step four, when the pressure in the vacuum tank 42 is not more than the second set pressure, the vacuum pump 41 is closed.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A liquid atomization system, comprising:
the liquid storage device (1) is provided with a pressure bearing chamber (111) and a buffer chamber (112), and the buffer chamber (112) is configured to bear liquid in the condenser (100);
a one-way communication assembly (2), through which liquid in the buffer chamber (112) can flow to the pressure-bearing chamber (111);
the atomizing nozzle (3), the atomizing nozzle (3) is communicated with the pressure bearing chamber (111);
the negative pressure adsorption device (4), the pressure bearing chamber (111) is communicated with the negative pressure adsorption device (4), and the negative pressure adsorption device (4) can adsorb the liquid in the buffer chamber (112) into the pressure bearing chamber (111) through negative pressure adsorption;
the positive pressure blowing device (5) is communicated with the pressure bearing chamber (111), and the positive pressure blowing device (5) can atomize and spray the liquid in the pressure bearing chamber (111) through the atomizing nozzle (3) by pressurizing.
2. A liquid atomization system according to claim 1, wherein the reservoir (1) includes:
a liquid storage tank (11);
the partition plate (12) is arranged in the liquid storage tank (11) and divides the inner cavity of the liquid storage tank (11) into the pressure bearing chamber (111) and the buffer chamber (112);
a first liquid level detection device (13) disposed in the pressure-bearing chamber (111);
and the second liquid level detection device (14) is arranged in the buffer chamber (112).
3. A liquid atomizing system according to claim 2, characterized in that said liquid storage device (1) further comprises a first heating device (15), said first heating device (15) being disposed on said liquid storage tank (11) and being capable of heating the liquid in said liquid storage tank (11).
4. A liquid atomization system according to claim 1, characterized in that the one-way communication assembly (2) comprises:
a first pipe joint (21) which is arranged on the liquid storage device (1) and is communicated with the pressure bearing chamber (111);
the second pipe joint (22) is arranged on the liquid storage device (1) and communicated with the buffer chamber (112);
a one-way communication pipeline (23) with two ends respectively communicated with the first pipe joint (21) and the second pipe joint (22);
and the one-way valve (24) is arranged on the one-way communication pipeline (23).
5. A liquid atomizing system according to claim 1, characterized in that said negative pressure adsorption means (4) comprise:
a vacuum pump (41);
a vacuum tank (42);
a first vacuum line (43) having both ends respectively connected to the vacuum pump (41) and the vacuum tank (42);
a second vacuum line (44) having both ends respectively connected to the vacuum tank (42) and the pressure receiving chamber (111);
negative pressure valve (45), set up in on second vacuum pipeline (44), negative pressure valve (45) cut off during second vacuum pipeline (44), vacuum pump (41) can be to vacuum tank (42) evacuation, negative pressure valve (45) switch on during second vacuum pipeline (44), vacuum tank (42) can be through negative pressure adsorption with the liquid in buffer memory room (112) adsorbs to in pressure-bearing room (111).
6. Liquid atomization system according to claim 1, characterized in that the positive pressure blowing device (5) comprises:
an air tank (51), wherein compressed air is stored in the air tank (51);
a first blowing pipeline (52) with two ends respectively communicated with the air storage tank (51) and the pressure bearing chamber (111);
a positive pressure valve (53) provided on the first blowing line (52).
7. A liquid atomization system according to claim 6, characterized in that the positive pressure blowing device (5) further comprises:
a second blowing pipe (54) with two ends respectively communicated with the atomizing nozzle (3) and the pressure-bearing chamber (111), wherein the first blowing pipe (52) is communicated with the pressure-bearing chamber (111) through the second blowing pipe (54);
a bypass valve (55) provided on the second blow line (54) at a side of a communication between the first blow line (52) and the second blow line (54) toward the atomizing nozzle (3).
8. The liquid atomizing system according to claim 1, further comprising an ejection communicating assembly (6), wherein the ejection communicating assembly (6) includes an ejection pipe (61) and an ejection valve (62), both ends of the ejection pipe (61) are respectively communicated with the atomizing head (3) and the pressure-bearing chamber (111), and the ejection valve (62) is disposed on the ejection pipe (61).
9. A vehicle comprising a liquid atomization system according to any one of claims 1-8, wherein the buffer chamber (112) is connected to a condenser (100) of a tail pipe of the vehicle.
10. A liquid atomizing method, characterized by using the liquid atomizing system according to any one of claims 1 to 8, comprising:
the liquid level in the buffer chamber (112) has a high liquid level and a low liquid level;
when the liquid level of the buffer chamber (112) is not lower than the high liquid level, the negative pressure adsorption device (4) is started, and the liquid in the buffer chamber (112) is adsorbed into the pressure-bearing chamber (111) through negative pressure adsorption;
when the liquid level of the buffer chamber (112) is not higher than the low liquid level, the negative pressure adsorption device (4) is closed.
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| CN202210622804.XA CN114985143B (en) | 2022-06-01 | 2022-06-01 | Liquid atomization system, vehicle and liquid atomization method |
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| CN202210622804.XA CN114985143B (en) | 2022-06-01 | 2022-06-01 | Liquid atomization system, vehicle and liquid atomization method |
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| CN114985143B CN114985143B (en) | 2024-03-19 |
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| CN114985143B (en) | 2024-03-19 |
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