CN218208988U - Valve precooling device for quickly filling hydrogen - Google Patents
Valve precooling device for quickly filling hydrogen Download PDFInfo
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- CN218208988U CN218208988U CN202222526138.8U CN202222526138U CN218208988U CN 218208988 U CN218208988 U CN 218208988U CN 202222526138 U CN202222526138 U CN 202222526138U CN 218208988 U CN218208988 U CN 218208988U
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- end pipe
- hydrogen
- temperature sensor
- heat exchanger
- flow valve
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
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Abstract
The utility model discloses a valve precooling apparatus for filling hydrogen fast. The system comprises a hydrogen flow valve, a vortex tube, a coiled heat exchanger, a first temperature sensor, a condenser, a cooling liquid flow valve, a controller and a second temperature sensor; the outlet end pipe of the pressurizer is connected with the inlet end pipe of the vortex tube after passing through the hydrogen flow valve, the heat outlet end pipe of the vortex tube is connected with the inlet end pipe of the coil tube type heat exchanger, the coil tube type heat exchanger is connected with the condenser through the cooling liquid flow valve, the outlet end pipe of the coil tube type heat exchanger is connected with the cold outlet end pipe of the vortex tube and then connected with the inlet end pipe of the hydrogen storage bottle, the heat outlet end pipe of the vortex tube is provided with a second temperature sensor, the inlet end pipe of the hydrogen storage bottle is provided with a first temperature sensor, the second temperature sensor and the cooling liquid flow valve are connected with the controller. The utility model discloses can reduce hydrogen temperature fast, and then realize that hydrogen fills into fast to reduce the precooling cost.
Description
Technical Field
The utility model relates to a valve precooling apparatus, concretely relates to valve precooling apparatus for filling hydrogen fast.
Background
The composite material gas cylinder has the advantages of high pressure bearing capacity and light weight, is more and more widely applied to the existing high-pressure gas storage technology, and becomes the mainstream of research, development and application. Because the composite material gas cylinder has high working pressure and is easily influenced by temperature, the working medium is usually inflammable and explosive, and leakage and explosion accidents are very easy to happen when the gas cylinder is damaged and the safety performance is reduced in the process of quick inflation; therefore, the safety service performance is the research direction of the important concern. In the case of hydrogen, to meet market demand, hydrogen cylinders require a rapid pressure rise to a rated value in about 3 to 5 minutes. In the process of quickly charging hydrogen into the gas cylinder, severe temperature change caused by a temperature rise effect generates larger temperature difference stress between layers of the composite material, so that the mechanical property of a resin matrix is influenced, and the fatigue life of the gas cylinder is reduced; the highest temperature rise of the hydrogen can reach more than 130 ℃, and the safety performance of the epoxy resin used by the composite material gas cylinder is influenced when the working temperature of the epoxy resin exceeds 100 ℃; therefore, the index of the temperature rise of the hydrogen in the gas cylinder in the process of quick filling needs to be controlled by a precooling system, and the maximum temperature is limited to be below 85 ℃. The rapid hydrogen charging process in the vehicle-mounted gas cylinder hydrogen circulation fatigue test system is in a complex working condition of variable temperature and variable flow, and the key step of the hydrogen charging process is how to effectively control the temperature in the gas cylinder under the working condition.
The precooling device is one of core devices of a 70MPa hydrogenation station, and ensures that the hydrogenation temperature of the hydrogenation station meets the standard requirement. Currently, there are 2 common precooling modes. The liquid nitrogen precooling device directly cools the high-pressure hydrogen by taking liquid nitrogen as cooling liquid. The heat exchanger adopts a double-pipe heat exchanger, low-temperature liquid in the liquid nitrogen storage tank enters the outer pipe of the double-pipe heat exchanger under the action of gravity, and high-pressure hydrogen in the inner pipe is cooled, so that the structure is complex. The refrigerating unit precooling device system comprises a first heat exchanger, a second heat exchanger and 1 refrigerating unit. The low-temperature refrigerant of the refrigerating unit firstly cools the condensing agent in the second heat exchanger, the cooling liquid in the cooling pipe of the condensing agent flows into the first heat exchanger through the pipeline after being cooled by the second heat exchanger, and the high-pressure hydrogen is cooled. Wherein the cooling liquid is ethanol or a mixed solution of glycol and water. Many applicable scenes exist, but the initial cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model provides a weak point to above precooling scheme, the utility model provides a valve precooling apparatus for filling hydrogen fast. The utility model discloses a cooperation design of parts such as vortex tube, coil heat exchanger, temperature sensor, flow valve and singlechip can reduce the hydrogen temperature fast, and then realizes that hydrogen fills fast into to reduce the precooling cost.
The technical scheme of the utility model as follows:
the utility model comprises a hydrogen flow valve, a vortex tube, a coiled heat exchanger, a first temperature sensor, a condenser, a cooling liquid flow valve, a controller and a second temperature sensor;
the outlet end pipe of the pressurizer is connected with the inlet end pipe of the vortex tube after passing through the hydrogen flow valve, the heat outlet end pipe of the vortex tube is connected with the inlet end pipe of the coil tube type heat exchanger, the coil tube type heat exchanger is connected with the condenser through the cooling liquid flow valve, the outlet end pipe of the coil tube type heat exchanger is connected with the cold outlet end pipe of the vortex tube and then connected with the inlet end pipe of the hydrogen storage bottle, the heat outlet end pipe of the vortex tube is provided with a second temperature sensor, the inlet end pipe of the hydrogen storage bottle is provided with a first temperature sensor, the second temperature sensor and the cooling liquid flow valve are connected with the controller.
The cooling liquid in the coil type heat exchanger is a mixture of ethanol and water or a mixture of glycol and water.
And the inlet of the coil type heat exchanger is connected with the inlet of the condenser through a cooling liquid flow valve.
The number of the first temperature sensor and the second temperature sensor is 1 or more.
And the outlet end pipe of the coil pipe type heat exchanger, the cold outlet end pipe of the vortex pipe and the inlet end pipe of the hydrogen storage bottle are communicated through a three-way joint.
The utility model has the advantages that:
the utility model discloses can reduce hydrogen temperature fast, and then realize that hydrogen fills into fast, traditional cooling method compares, and the structure is simpler to reduce the precooling cost.
Drawings
Fig. 1 is a schematic view of the structure of the device of the present invention.
In the figure: 1. a hydrogen station; 2. a press; 3. a hydrogen flow valve; 4. a vortex tube; 5. a coil heat exchanger; 6. a first temperature sensor; 7. a hydrogen storage bottle; 8. a condenser; 9. a coolant flow valve; 10. a controller; 11. a second temperature sensor.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific embodiments:
as shown in fig. 1, the system comprises a hydrogen filling station 1, a pressurizer 2, a hydrogen flow valve 3, a vortex tube 4, a coiled heat exchanger 5, a first temperature sensor 6, a hydrogen storage bottle 7, a condenser 8, a cooling liquid flow valve 9, a controller 10 and a second temperature sensor 11;
add hydrogen station 1 and add the entry end of press 2 and link to each other, the export end pipe of press 2 links to each other with the entry end pipe of vortex tube 4 behind hydrogen flow valve 3, the hot export end pipe of vortex tube 4 links to each other with the entry end pipe of coiled heat exchanger 5, the entry and the export of coiled heat exchanger 5 link to each other with the both ends of condensing engine 8 respectively, coiled heat exchanger 5 links to each other with condensing engine 8 through coolant flow valve 9, the export end pipe of coiled heat exchanger 5 links to each other with the entry end pipe of hydrogen storage bottle 7 again after the cold export end pipe of vortex tube 4 links to each other, specifically, the export end pipe of coiled heat exchanger 5, communicate through three way connection between the cold export end pipe of vortex tube 4 and the entry end pipe of hydrogen storage bottle 7. The second temperature sensor 11 is installed at the hot outlet end pipe of the vortex tube 4, the first temperature sensor 6 is installed at the inlet end pipe of the hydrogen storage bottle 7, and the first temperature sensor 6, the second temperature sensor 11 and the cooling liquid flow valve 9 are all connected with the controller 10. The device is used for providing a precooling effect for hydrogen passing through the gas charging valve when the hydrogen storage bottle is rapidly charged.
The cooling liquid in the coil type heat exchanger 5 is a mixture of ethanol and water or a mixture of glycol and water. In the mixture, the ratio of ethanol to water is 7.
The inlet of the coil heat exchanger 5 is connected to the inlet of the condenser 8 via a coolant flow valve 9.
The number of the first temperature sensor 6 and the second temperature sensor 11 is 1 or more.
The working process of the utility model is as follows:
the hydrogen is led out from the hydrogen station 1 and the pressure of the hydrogen is increased to a suitable extent via a compressor 2. The hydrogen then passes through a flow valve 3 into a vortex tube 4. At the moment, the hydrogen is divided into two paths, the upper end is the cold-end hydrogen, and the cold-end hydrogen is lower in temperature and reaches the temperature meeting the requirement of inflating the hydrogen storage bottle. The hot end is at a temperature higher than normal temperature and is therefore introduced into the coil heat exchanger 5 for cooling. The cooling liquid in the coil type heat exchanger is a mixture of ethanol and water, and the mixing ratio is 7. First temperature sensor 6 and second temperature sensor 11 gather the temperature of corresponding position and then send temperature signal to controller 10, and controller 10 adjusts coolant flow valve 9's aperture according to temperature signal, and then control the coolant flow, and the velocity of flow is faster, and the radiating rate is faster, controls the temperature of hydrogen to reach the purpose of hot junction hydrogen cooling to target temperature.
Claims (5)
1. A valve precooling device for quick hydrogen filling is characterized by comprising a hydrogen flow valve (3), a vortex tube (4), a coil heat exchanger (5), a first temperature sensor (6), a condenser (8), a cooling liquid flow valve (9), a controller (10) and a second temperature sensor (11);
the outlet end pipe of pressurizer (2) links to each other with the inlet end pipe of vortex tube (4) behind hydrogen flow valve (3), the hot outlet end pipe of vortex tube (4) links to each other with the inlet end pipe of coiled heat exchanger (5), coiled heat exchanger (5) link to each other with condensing engine (8) through coolant flow valve (9), the outlet end pipe of coiled heat exchanger (5) links to each other with the inlet end pipe of hydrogen storage bottle (7) again after linking to each other with the cold outlet end pipe of vortex tube (4), second temperature sensor (11) are installed to the hot outlet end pipe department of vortex tube (4), first temperature sensor (6) are installed to the inlet end pipe department of hydrogen storage bottle (7), first temperature sensor (6), second temperature sensor (11) and coolant flow valve (9) all link to each other with controller (10).
2. The valve precooling apparatus for rapid hydrogen charging according to claim 1, wherein the coolant in the coil heat exchanger (5) is a mixture of ethanol and water or a mixture of ethylene glycol and water.
3. A valve pre-cooling device for rapid hydrogen charging according to claim 1, characterized in that the inlet of the coil heat exchanger (5) is connected to the inlet of the condenser (8) via a coolant flow valve (9).
4. A valve pre-cooling device for quick hydrogen filling according to claim 1, wherein the number of the first temperature sensor (6) and the second temperature sensor (11) is 1 or more.
5. The valve precooling apparatus for quick hydrogen charging according to claim 1, wherein the outlet end pipe of the coil heat exchanger (5), the cold outlet end pipe of the vortex tube (4) and the inlet end pipe of the hydrogen storage bottle (7) are communicated through a tee joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222526138.8U CN218208988U (en) | 2022-09-23 | 2022-09-23 | Valve precooling device for quickly filling hydrogen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222526138.8U CN218208988U (en) | 2022-09-23 | 2022-09-23 | Valve precooling device for quickly filling hydrogen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218208988U true CN218208988U (en) | 2023-01-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222526138.8U Active CN218208988U (en) | 2022-09-23 | 2022-09-23 | Valve precooling device for quickly filling hydrogen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218208988U (en) |
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2022
- 2022-09-23 CN CN202222526138.8U patent/CN218208988U/en active Active
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