CN109004250B - Device and method for rapidly adjusting temperature and humidity of pipeline gas - Google Patents
Device and method for rapidly adjusting temperature and humidity of pipeline gas Download PDFInfo
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- CN109004250B CN109004250B CN201811058474.6A CN201811058474A CN109004250B CN 109004250 B CN109004250 B CN 109004250B CN 201811058474 A CN201811058474 A CN 201811058474A CN 109004250 B CN109004250 B CN 109004250B
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- 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
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04701—Temperature
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- 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
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
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- 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
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04828—Humidity; Water content
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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
- Y02E60/50—Fuel cells
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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Abstract
A device and a method for adjusting pipeline gas, in particular to a technology for rapidly adjusting the temperature and humidity of the pipeline gas, which belongs to the field of fuel cells. The device comprises a gas and steam mixing system and a temperature regulating system, wherein the gas and steam mixing system is respectively provided with two pipelines of gas and steam, the two pipelines are converged at a nozzle, the mixture is continuously mixed and regulated after being sprayed out of the nozzle and then is output, and the temperature regulating system achieves the aim of regulating the temperature in a jacket by regulating the proportion of a heating agent and a cooling agent entering the jacket. The invention can improve the response speed and reduce the thermal hysteresis, and particularly provides the rapid change control of the temperature and humidity flow in the rated range for the humidifying device.
Description
Technical Field
The invention belongs to the field of fuel cells, and particularly relates to a device and a method for quickly adjusting the temperature and humidity of pipeline gas.
Background
Some industrial processes require warming and humidification of gases, such as pipeline gases with pressure. Particularly, the humidification of the gas supplied by the proton exchange membrane fuel cell test platform needs to be quickly adjusted according to the gas flow, pressure and temperature of different working conditions of the electric pile.
The test of the fuel cell stack requires controlling the temperature, pressure, humidity and flow of the air supply to detect various performance performances of the stack and find out the optimized conditions. Wherein the humidification of the air is mainly realized by bubbling, spray spraying, membrane exchange, steam and the like. However, the current technology has the defect of quick response to simultaneous changes of temperature, pressure, humidity and flow, and further progress is still needed to meet the technical development requirements. In a humidifying device of specific specification, the conventional technology is easy to cause the change of the state of gas in a pile due to the heat dissipation of a container, a pipe fitting, a valve, a detector and the like of the testing device when the flow in the range is low, particularly when the temperature and the humidity are high, and the state of water drops and the like are mainly represented by the decrease of the temperature and the humidity.
The bubbling type humidifying device has larger volume, needs high-power support if the self temperature needs to be quickly regulated, and adopts a peripheral high-temperature low-temperature two-fluid supply source method to increase the temperature regulation speed, but the total volume and the power are more huge in practice. And is generally applicable only to low power devices.
As in patent CN101076910a, by bubbling and temperature regulation, precise control of the temperature and humidity after humidification can be achieved. However, the bulk of the bubbling device is a characteristic, even if the pressure is not changed, for temperature change, for example, from the highest temperature to the lowest temperature, a larger peripheral cold and heat source is needed as heat exchange support, and the device is not suitable for a rapid temperature and humidity regulation mode.
For example, patent CN101829511a employs a two-way gas control, one that humidifies and one that does not humidify, controls flow by using two sets of flow control systems, but does not provide rapid regulation of temperature.
The spray type improves the contact effect of the humidified gas and liquid, and a heat exchanger is generally used for preheating air, then spraying and humidifying, and finally exchanging heat for the mixed gas of gas and water mist.
For example, the CN206115313U patent adopts preheating, split flow, partial humidification, mixing, temperature control, and can accelerate the control of temperature and humidity changes. The heating depends on circulating water, a large-area heat exchanger is needed, the volume and the weight of the large-area heat exchanger are large, and the characteristics of large heat capacity, large power and slow temperature change of a system of the device are determined.
In addition, most of the current humidity sensors have the defect that once the probe is stained with condensed water, measurement fails, and particularly when the flow rate is low, the temperature is changed from low to high, and the condensed water is more likely to appear on the probe. In the quick adjustment operation, if the humidity measurement result is used as a control condition, such humidity data may affect the accuracy and feedback speed of the control adjustment, which is disadvantageous for the quick adjustment.
In the existing fuel cell development test system, the problems of huge equipment volume, slow temperature and humidity change response, poor control precision and the like are generally existed, and the problems are to be solved.
Disclosure of Invention
In order to solve the problems of slow temperature and humidity change response and poor control precision of the fuel cell stack testing device, the invention provides a method for quickly adjusting the temperature and humidity of the pipeline gas.
The invention adopts the technical scheme that: a device for quickly regulating the temperature and humidity of pipeline gas is composed of a gas-steam mixing system and a temp regulating system. The gas and steam mixing system is sequentially connected with the gas source port, the temperature and humidity pressure detector A, the gas flow controller and the mixed heat exchange system; the mixing heat exchange system comprises a jacket, a preheater, a nozzle, a mixer and a temperature regulator, wherein the preheater, the nozzle, the mixer and the temperature regulator are sequentially connected, a steam inlet, a steam temperature pressure detector and a steam flow controller are connected with the nozzle, and the jacket is arranged at the outer sides of the preheater, the nozzle, the mixer and the temperature regulator or at the outer sides of the nozzle, the mixer and the temperature regulator; a temperature and humidity pressure detector B is also arranged on the connecting pipeline of the temperature regulator and the output port; the temperature regulating system comprises: the mixing valve, the hot agent heater and the cold water machine of parallel connection, refrigerant pump, the cold water machine is connected with the refrigerant pump.
During operation, air obtained from an air source port passes through the temperature and humidity pressure detector A, the air flow controller controls the flow, the target temperature and humidity pressure data is compared, the added water quantity is calculated, the air enters the nozzle after being preheated by the preheater, steam enters the nozzle through the steam inlet, the steam temperature and pressure detector detects the steam, the steam flow controller controls the flow and enters the nozzle, the gas sprayed by the nozzle is further mixed in the mixer and then enters the temperature regulator, the temperature-regulated gas passes through the temperature and humidity pressure detector B and is discharged through the output port, and the temperature regulating system achieves the aim of regulating the heat tracing temperature in the jacket by regulating the proportion of the coolant entering the jacket.
The invention has the beneficial effects that:
the invention can improve the response speed and reduce the thermal hysteresis, and particularly provides the rapid change control of the temperature and humidity flow in the rated range for the humidifying device.
The invention establishes the jacket outside the gas path component to make temperature synchronous regulation, and aims to provide a same-temperature environment, avoid heat exchange between the target gas and the pipe wall flowing through the circuit and the inner wall of the container as much as possible, and the jacket only provides a fast-changing same-temperature environment for the inner-layer gas flow, so that the wall temperature change is fast and uniform, a high-power cooling and heating system is not needed to support the fast-speed regulation change of the temperature, and resources are saved.
The jacket provided by the invention can realize dual functions of heating and cooling, and improves the working efficiency.
Drawings
FIG. 1 is a schematic view of the construction of example 1 of the apparatus of the present invention.
FIG. 2 is a schematic view of the construction of example 2 of the apparatus of the present invention.
The following figures are shown: 01. air source port, 02, temperature and humidity pressure sensor A2, 03, gas flow controller, 04, jacket, 05, preheater, 06, nozzle, 07, mixer, 08, attemperator, 09, temperature and humidity pressure sensor B9, 10, mixing valve, 11, thermic three-way valve, 12, thermic heater, 13, thermic pump, 14, thermic storage tank, 15, chiller, 16, coolant pump, 17, coolant storage tank, 18, coolant three-way valve, 19, outlet, 20, steam inlet, 21, steam temperature and pressure sensor, 22, steam flow controller, 23, pre-heater proportional control valve, 24, pre-chiller proportional control valve, 25, circulating liquid storage tank.
Detailed Description
Example 1
The gas and steam mixing system is formed by sequentially connecting a gas source port 1, a temperature and humidity pressure detector A2, a gas flow controller 3, a preheater 5 and a nozzle 6, wherein the nozzle 6 is in contact with the mixer 7 and partially stretches into one end of the mixer 7, the other end of the mixer 7 is sequentially connected with a temperature regulator 8, a temperature and humidity pressure detector B9 and an output port 19, a branch is additionally arranged, a steam inlet 20, a steam temperature and pressure detector 21 and a steam flow controller 22 are sequentially connected with the nozzle 6, the same jacket 4 is sleeved outside the preheater 5, the nozzle 6, the mixer 7 and the temperature regulator 8, the inlet of the jacket 4 is connected with one end of a mixing valve 10, the other two ends of the mixing valve 10 are respectively connected with one end of a hot agent three-way valve 11 and one end of a cold agent three-way valve 18, the other two ends of the hot agent three-way valve 11 are respectively connected with a hot agent heater 12 and a hot agent storage tank 14, the hot agent heater 12 and a hot agent pump 13 are respectively connected with the hot agent storage tank 14, the hot agent storage tank 14 is sequentially connected with the jacket 4, the other two ends of the cold agent three-way valve 18 are respectively connected with one end of a cold water machine 15 and a cold agent storage tank 17, and the cold agent storage tank 16 and the cold agent 17 are respectively connected with the cold agent storage 17 sequentially.
The air obtained from the air source port 1 passes through the temperature and humidity pressure detector A2, the air flow controller 3 controls the flow, the target temperature and humidity pressure data is compared, the added water quantity is calculated, the air enters the nozzle 6 after being preheated by the preheater 5, the steam enters the nozzle 6 after being detected by the steam inlet 20, the steam enters the nozzle 6 after being controlled by the steam flow controller 22, the air sprayed by the nozzle 6 enters the temperature regulator 8 after being further mixed in the mixer 7, the air regulated by the temperature regulator 8 passes through the temperature and humidity pressure detector B9 and is discharged from the output port 19, the heating agent heater 12 heats the heating agent under the driving of the heating agent pump 13, the heating agent comprising the heating agent storage tank 14 heats the heating agent under the control of the heating agent three-way valve 11, and the heating is stopped when the required temperature is reached. The temperature is higher than the target gas temperature, generally 5-15 ℃ higher than the target gas temperature, the cold water machine 15 cools the refrigerant under the driving of the refrigerant pump 16, the refrigerant comprising the refrigerant storage tank 17 is cooled under the control of the refrigerant three-way valve 18, and the cooling is stopped when the required temperature is reached. The temperature is lower than the target temperature of the gas, preferably lower than the ambient temperature, higher than the freezing point, generally 5-10 ℃ higher than the freezing point, the mixing valve 10 mixes the hot agent and the cold agent and then injects the mixed hot agent into the jacket 4, the liquid in the jacket 4 exchanges heat with the preheater 5, the nozzle 6, the mixer 7 and the temperature regulator 8 and then flows back into the hot agent storage tank 14 and the cold agent storage tank 17 through the outlet pipelines, and the mixing ratio of the hot agent and the cold agent is changed by adjusting the mixing valve 10 or by adjusting the frequency of the hot agent pump 13 and the cold agent pump 16.
Example 2
The gas and steam mixing system is formed by sequentially connecting a gas source port 1, a temperature and humidity pressure detector A2, a gas flow controller 3, a preheater 5 and a nozzle 6, sequentially connecting the nozzle 6, a mixer 7, a temperature regulator 8, a temperature and humidity pressure detector B9 and an output port 19, and further arranging a branch, wherein a steam inlet 20, a steam temperature and pressure detector 21 and a steam flow controller 22 are sequentially connected with the nozzle 6, the same jacket 4 is sleeved outside the nozzle 6, the mixer 7 and the temperature regulator 8, the inlet of the jacket 4 is connected with one end of a mixing valve 10 through a pipeline, the other two ends of the mixing valve 10 are respectively connected with a hot agent heater 12 and a cold water machine 15, the hot agent heater 12, a proportional control valve 23 before the heater, a cold agent pump 16 are connected with a circulating liquid storage tank 25, the circulating liquid storage tank 25 is connected with the jacket 4, and the cold water machine 15, the proportional control valve 24 before the heater, the proportional control valve 23 before the cold water machine are sequentially connected with the cold agent pump 16.
The air obtained from the air source port 1 passes through a temperature and humidity pressure detector A2, a gas flow controller 3 controls the flow, target temperature and humidity pressure data are compared, the calculated added water quantity is calculated, the air enters a nozzle 6 after being preheated by a preheater 5, steam enters from a steam inlet 20, the steam is detected by a steam temperature and pressure detector 21, the steam flow controller 22 controls the flow and enters the nozzle 6, the gas sprayed by the nozzle 6 is further mixed in a mixer 7 and enters a temperature regulator 8, the gas regulated by the temperature regulator 8 passes through a temperature and humidity pressure detector B9 and is discharged through an output port 19, a refrigerant pump 16 provides flow power, circulating liquid enters a hot agent heater 12 from a proportional regulating valve 23 before heating and a proportional regulating valve 24 before cooling to be heated to be higher than the target temperature of 5-10 ℃ of the gas and the cooling machine 15 to be higher than the freezing point of 5-10 ℃ respectively, the mixed liquid enters a jacket 4 for heat exchange by the mixing valve 10, and flows back to a circulating liquid storage tank 25 through an outlet pipeline of the jacket 4.
The above-described embodiments are intended to be examples and illustrations of the present invention only and are not intended to limit the inventive concepts to the described embodiments. In addition, those skilled in the art will appreciate that the present invention is not limited to the embodiments described above, and that many variations and modifications are possible in light of the teachings of the invention, which variations and modifications are within the scope of the invention as claimed.
Claims (8)
1. The device is characterized by comprising a gas and steam mixing system and a temperature regulating system, wherein the gas and steam mixing system is sequentially connected with a gas source port (1), a temperature and humidity pressure detector A (2), a gas flow controller (3) and a mixed heat exchange system through pipelines; the mixing heat exchange system comprises a jacket (4), a preheater (5), a nozzle (6), a mixer (7) and a temperature regulator (8), wherein the preheater (5), the nozzle (6), the mixer (7) and the temperature regulator (8) are sequentially connected, a steam inlet (20), a steam temperature and pressure detector (21), a steam flow controller (22) and the nozzle (6) are sequentially connected, and the jacket (4) is arranged on the outer sides of the preheater (5), the nozzle (6), the mixer (7) and the temperature regulator (8) or on the outer sides of the nozzle (6), the mixer (7) and the temperature regulator (8); a temperature and humidity pressure detector B (9) is also arranged on the connecting pipeline of the temperature regulator (8) and the output port (19); the temperature regulating system comprises: the heating device comprises a mixing valve (10), a heating agent heater (12), a cold water machine (15) and a refrigerant pump (16), wherein the heating agent heater (12), the cold water machine (15) and the refrigerant pump (16) are connected in parallel, and the mixing valve (10) is used for mixing the heating agent and the refrigerant and then injecting the mixture into a jacket (4).
2. The device for quickly adjusting the temperature and humidity of the gas in the pipeline according to claim 1, wherein the temperature adjusting system is connected in a manner that an inlet of a jacket (4) is connected with one end of a mixing valve (10), the other two ends of the mixing valve (10) are respectively connected with one end of a hot agent three-way valve (11) and one end of a cold agent three-way valve (18), the other two ends of the hot agent three-way valve (11) are respectively connected with a hot agent heater (12) and a hot agent storage tank (14), the hot agent heater (12) and a hot agent pump (13) are sequentially connected with the hot agent storage tank (14), the hot agent storage tank (14) is sequentially connected with an outlet pipeline of the jacket (4), the other two ends of the cold agent three-way valve (18) are respectively connected with a cold water machine (15) and a cold agent storage tank (17), the cold water machine (15) and the cold agent pump (16) are sequentially connected with the cold agent storage tank (17), and the cold agent storage tank (17) is sequentially connected with the outlet pipeline of the jacket (4).
3. The device for quickly adjusting the temperature and humidity of the pipeline gas according to claim 1, wherein the temperature adjusting system is connected in a manner that an inlet of a jacket (4) is connected with one end of a mixing valve (10), the other two ends of the mixing valve (10) are respectively connected with a hot agent heater (12) and a cold water machine (15), the hot agent heater (12), a proportional adjusting valve (23) before the heater, a refrigerant pump (16) are sequentially connected with a circulating liquid storage tank (25), the circulating liquid storage tank (25) is connected with an outlet of the jacket (4), and the cold water machine (15) is sequentially connected with a refrigerant pump (16) of a proportional adjusting valve (24) before the cold water machine.
4. A method for rapidly adjusting the temperature and humidity of gas in a pipeline by adopting the device according to claim 1, characterized in that air is fed from an air source port (1) and passes through a temperature and humidity pressure detector A (2), a gas flow controller (3) controls the flow, target temperature and humidity pressure data are compared, the added water quantity is calculated, the air enters a nozzle (6) after being preheated by a preheater (5), steam enters a steam inlet (20), a steam temperature pressure detector (21) detects the air, a steam flow controller (22) controls the flow and then enters the nozzle (6), the gas sprayed by the nozzle (6) enters a temperature regulator (8) after being further mixed in a mixer (7), the gas regulated by the temperature regulator (8) is discharged through a temperature and humidity pressure detector B (9) by an output port (19), and a temperature regulating system changes the temperature of liquid in a jacket (4) by regulating the ratio of a refrigerant and a heating agent.
5. The method for quickly adjusting the temperature and the humidity of the pipeline gas according to claim 4, wherein the circulating agent is driven by a thermic pump (13), the thermic heater (12) heats the thermic agent, and the heating agent comprising the thermic storage tank (14) is heated by the control of the thermic three-way valve (11) and stops heating when the required temperature is reached; the temperature is higher than the target temperature of gas, the cold water machine (15) cools the refrigerant under the driving of the refrigerant pump (16), the refrigerant comprising the refrigerant storage tank (17) is cooled under the control of the refrigerant three-way valve (18), the cooling is stopped when the required temperature is reached, the temperature is lower than the target temperature of the gas, the mixing valve (10) mixes the hot agent and the refrigerant and then injects the hot agent into the jacket (4), and the liquid in the jacket (4) exchanges heat with the preheater (5), the nozzle (6), the mixer (7) and the temperature regulator (8) and then flows back into the hot agent storage tank (14) and the refrigerant storage tank (17) through the outlet pipeline.
6. The method for quickly regulating the temperature and humidity of the pipeline gas according to claim 4, wherein the refrigerant pump (16) provides flow power, circulating liquid enters the hot agent heater (12) and the cold water machine (15) from the pre-heating proportional regulating valve (23) and the pre-cold water machine proportional regulating valve (24) respectively, so that the hot agent is heated to be higher than the target gas temperature, the cold agent is refrigerated to be higher than the freezing point, the mixing valve (10) mixes the hot agent and the cold agent and then enters the jacket (4) to exchange heat with the nozzle (6), the mixer (7) and the thermostat (8), and then flows back to the circulating liquid storage tank (25) through an outlet pipeline of the jacket (4).
7. The method for rapidly adjusting the temperature and humidity of a pipeline gas according to claim 4, wherein the thermic heater (12) heats the circulating liquid to a temperature 5-10 ℃ higher than the target temperature of the gas, and the chiller (15) refrigerates the circulating liquid to a temperature 5-10 ℃ higher than the freezing point.
8. Method for rapid adjustment of the temperature and humidity of a pipeline gas according to claim 5, characterized in that the adjustment of the hot and cold agent is carried out by means of a mixing valve (10) or by means of the frequency adjustment of the hot agent pump (13) and the cold agent pump (16) to change the mixing ratio of the hot agent and cold agent.
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| CN201811058474.6A CN109004250B (en) | 2018-09-11 | 2018-09-11 | Device and method for rapidly adjusting temperature and humidity of pipeline gas |
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| CN201811058474.6A CN109004250B (en) | 2018-09-11 | 2018-09-11 | Device and method for rapidly adjusting temperature and humidity of pipeline gas |
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| CN109004250B true CN109004250B (en) | 2023-05-05 |
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Families Citing this family (4)
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| CN109757919B (en) * | 2019-01-09 | 2022-10-28 | 青岛海尔空调器有限总公司 | Control method of energy system |
| CN111707942A (en) * | 2020-06-30 | 2020-09-25 | 上海捷氢科技有限公司 | Air inlet system of fuel cell stack test bench |
| CN111722121A (en) * | 2020-06-30 | 2020-09-29 | 上海捷氢科技有限公司 | Anti-condensation air inlet pipeline of fuel cell stack test board and control method |
| CN112462814B (en) * | 2021-01-22 | 2021-10-08 | 四川莱峰流体设备制造有限公司 | Humidity, temperature and flow rate automatic control calibration device |
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