CN114216048A - Air leakage device for safely discharging hydrogen of vehicle-mounted hydrogen storage cylinder and using method - Google Patents
Air leakage device for safely discharging hydrogen of vehicle-mounted hydrogen storage cylinder and using method Download PDFInfo
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- CN114216048A CN114216048A CN202111574981.7A CN202111574981A CN114216048A CN 114216048 A CN114216048 A CN 114216048A CN 202111574981 A CN202111574981 A CN 202111574981A CN 114216048 A CN114216048 A CN 114216048A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/002—Details of vessels or of the filling or discharging of vessels for vessels under pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
- F17C13/026—Special adaptations of indicating, measuring, or monitoring equipment having the temperature as the parameter
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/12—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures
- F17C13/123—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures for gas bottles, cylinders or reservoirs for tank vehicles or for railway tank wagons
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0107—Single phase
- F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
- F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
- F17C2225/0107—Single phase
- F17C2225/0123—Single phase gaseous, e.g. CNG, GNC
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/01—Propulsion of the fluid
- F17C2227/0192—Propulsion of the fluid by using a working fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/04—Methods for emptying or filling
- F17C2227/046—Methods for emptying or filling by even emptying or filling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/06—Controlling or regulating of parameters as output values
- F17C2250/0605—Parameters
- F17C2250/0631—Temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2260/00—Purposes of gas storage and gas handling
- F17C2260/04—Reducing risks and environmental impact
- F17C2260/042—Reducing risk of explosion
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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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/34—Hydrogen distribution
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention relates to a gas release device for safely releasing hydrogen of a vehicle-mounted hydrogen storage cylinder and a use method thereof, wherein the hydrogen storage cylinder comprises a cylinder body, a temperature sensor, a cylinder opening valve and a throttle valve, a hydrogen storage space is formed inside the cylinder body, a cylinder opening communicated with the hydrogen storage space is formed at one end of the cylinder body, the cylinder opening valve is hermetically arranged at the cylinder opening, the throttle valve is connected with the cylinder opening valve, the temperature sensor is arranged in the hydrogen storage space, two contacts of the temperature sensor extend out of the cylinder opening, and the gas release device comprises a detection unit and a gas release unit. According to the air release device for safely releasing the hydrogen of the vehicle-mounted hydrogen storage cylinder and the using method thereof, the detection unit is arranged to indirectly detect the temperature inside the cylinder body, if the temperature inside the cylinder body is about to reach the temperature corresponding to the designed pressure bearing capacity of the valve or the steel pipe, the release of the hydrogen can be stopped through the air release unit, and the valve and the steel pipe have no risk of explosion, so that the hydrogen of the vehicle-mounted hydrogen storage cylinder can be safely released.
Description
Technical Field
The invention relates to the technical field of hydrogen energy vehicles, in particular to a gas leakage device for safely discharging hydrogen of a vehicle-mounted hydrogen storage cylinder and a using method.
Background
The hydrogen storage cylinder is hydrogen storage equipment on a hydrogen energy automobile and is mainly used for storing and releasing hydrogen, and the scrapped hydrogen energy automobile needs to discharge the hydrogen in the vehicle-mounted hydrogen storage cylinder before disassembly. Before hydrogen is released, a main circuit on the scrapped hydrogen energy automobile must be disconnected, so that a temperature sensor arranged in a bottle mouth valve on the hydrogen cylinder cannot feed back the temperature change in the releasing process.
It is known from the prior art references that the temperature of a 70Mpa vehicle-mounted hydrogen storage cylinder rapidly decreases, even as low as-100 c, during rapid discharge. The pressure bearing capacity of the valve and the steel pipe of the discharge device mainly made of stainless steel materials is greatly influenced by temperature, and when the temperature is reduced, the pressure bearing strength is reduced. If the temperature in the hydrogen storage cylinder is lower than the temperature corresponding to the designed pressure bearing capacity of the valve or the steel pipe, the risk of explosion exists in the valve and the steel pipe. For example, the minimum working temperature of-40 ℃ is specified on a mark plate of a medium flow valve connected with a mouth valve of a hydrogen storage cylinder on a Korsada hydrogen energy automobile, and when the temperature is lower than-40 ℃, the explosion risk exists, so that it is necessary to monitor the temperature change inside the hydrogen storage cylinder in the process of discharging hydrogen from the hydrogen storage cylinder.
Therefore, the invention provides a gas leakage device for safely discharging hydrogen of a vehicle-mounted hydrogen storage cylinder and a using method thereof.
Disclosure of Invention
The invention provides an air release device for safely releasing hydrogen of a vehicle-mounted hydrogen storage cylinder and a using method thereof, aiming at the condition of the prior art, the detection unit is arranged to indirectly detect the temperature inside a bottle body, if the temperature inside the bottle body is about to reach the temperature corresponding to the designed pressure bearing capacity of a valve or a steel pipe, the air release unit can stop releasing the hydrogen, and the valve and the steel pipe have no risk of explosion, so that the hydrogen of the vehicle-mounted hydrogen storage cylinder can be safely released, and the air release device for safely releasing the hydrogen of the vehicle-mounted hydrogen storage cylinder can effectively solve the problems in the prior art.
The invention is realized by the following technical scheme:
the invention provides a gas release device for safely releasing hydrogen of a vehicle-mounted hydrogen storage cylinder, wherein the hydrogen storage cylinder comprises a cylinder body, a temperature sensor, a cylinder opening valve and a throttle valve, a hydrogen storage space is formed in the cylinder body, a cylinder opening communicated with the hydrogen storage space is formed at one end of the cylinder body, the cylinder opening valve is arranged at the cylinder opening in a sealing mode, the throttle valve is connected with the cylinder opening valve, the temperature sensor is arranged in the hydrogen storage space, two contacts of the temperature sensor extend out of the cylinder opening, and the gas release device comprises a detection unit and a gas release unit.
The detection unit is electrically connected with the temperature sensor through the two contacts and is used for detecting the resistance value of the temperature sensor so as to detect the temperature inside the bottle body.
The gas release unit is communicated with the middle flow valve, hydrogen in the bottle body can be discharged through the bottleneck valve, the middle flow valve and the gas release unit in sequence, and the gas release unit is used for adjusting the gas outlet pressure of the hydrogen and releasing the hydrogen.
Furthermore, the detection unit comprises a power supply, a protection resistor and a universal meter, wherein one interface of the power supply is sequentially electrically connected with the universal meter and one contact, the other interface of the power supply is electrically connected with the other contact, the two interfaces of the power supply are respectively electrically connected with the two interfaces of the protection resistor in a one-to-one correspondence manner, and the universal meter is used for detecting the current of the temperature sensor so as to detect the resistance value of the temperature sensor and the temperature inside the bottle body.
Further, the detecting unit includes a power supply, a protection resistor and a universal meter, an interface of the power supply sequentially with the protection resistor and one the contact electric connection, another interface of the power supply and another the contact electric connection, two interfaces of the universal meter respectively with two the contact one-to-one electric connection, the universal meter is used for detecting temperature sensor's voltage, in order to supply to detect temperature sensor's resistance reaches the inside temperature of bottle.
Further, it includes relief pressure valve and row's hydrogen pipeline to lose the gas unit, the one end of relief pressure valve with well flow valve is linked together, the other end of relief pressure valve with row's hydrogen pipeline is linked together, the relief pressure valve is used for adjusting hydrogen pressure of giving vent to anger and releases hydrogen, row's hydrogen pipeline is used for discharging hydrogen.
Furthermore, an air outlet pressure gauge is arranged at an air outlet of the pressure reducing valve.
Further, an air inlet pressure gauge is arranged at an air inlet of the pressure reducing valve.
Furthermore, the resistance value of the protection resistor can be adjusted.
Further, the range of the multimeter is adjustable.
Further, the output voltage of the power supply is adjustable.
The use method of any one of the air leakage devices for safely discharging the hydrogen of the vehicle-mounted hydrogen storage cylinder comprises the following steps:
s1: acquiring the resistance value of the temperature sensor, and acquiring the real-time temperature inside the bottle body according to the parameter change relation between the temperature of the temperature sensor and the resistance value;
s2: when the temperature in the bottle body is higher than a set value, adjusting the gas outlet pressure of the hydrogen and releasing the hydrogen;
s3: when the temperature in the bottle body reaches a set value, the hydrogen is stopped to be released;
s4: repeating the steps of S2 and S3 until the resistance value of the temperature sensor is detected not to be changed any more and the hydrogen release from the bottle body is completed.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the invention provides a gas release device for safely releasing hydrogen of a vehicle-mounted hydrogen storage cylinder, in the using process, when the cylinder does not start to release hydrogen, a detection unit can detect the resistance value of a temperature sensor, the temperature inside the cylinder can be obtained according to the parameter change relation between the temperature of the temperature sensor and the resistance value, when the temperature inside the cylinder does not reach a set value, the gas release pressure of hydrogen can be adjusted through the gas release unit to release hydrogen, along with the release of hydrogen, the detection unit detects the change of the resistance value of the temperature sensor, the temperature inside the cylinder is obtained again, when the temperature inside the cylinder does not reach the set value, the release of hydrogen is continued, when the temperature inside the cylinder reaches the set value, the release of hydrogen can be stopped through the gas release unit, after a period of time, detecting the resistance value of the temperature sensor by observing the detection unit, obtaining the temperature inside the bottle body again until the temperature inside the bottle body does not reach a set value, repeating the air leakage step again when the temperature inside the bottle body does not reach the set value until the detection unit detects that the resistance value of the temperature sensor does not change any more and the hydrogen release of the bottle body is finished; according to the air release device for safely releasing the hydrogen of the vehicle-mounted hydrogen storage cylinder and the using method thereof, the detection unit is arranged to indirectly detect the temperature inside the cylinder body, if the temperature inside the cylinder body is about to reach the temperature corresponding to the designed pressure bearing capacity of the valve or the steel pipe, the release of the hydrogen can be stopped through the air release unit, and the valve and the steel pipe have no risk of explosion, so that the hydrogen of the vehicle-mounted hydrogen storage cylinder can be safely released.
Drawings
FIG. 1 is a schematic plan view of an embodiment of a safety venting device for venting hydrogen from a vehicle-mounted hydrogen storage cylinder according to the present invention, wherein the safety venting device is a voltmeter;
FIG. 2 is a schematic plan view of an embodiment of a safety vent device for venting hydrogen from a vehicle-mounted hydrogen storage cylinder according to the present invention, wherein the safety vent device is a multimeter;
fig. 3 is a graph showing a variation of the temperature and the resistance of the temperature sensor according to an embodiment of the present invention.
Reference numerals: 1. a hydrogen storage cylinder; 11. a bottle body; 12. a temperature sensor; 121. a contact; 13. a bottleneck valve; 14. a mid-stream valve; 2. a detection unit; 21. a power source; 22. a protection resistor; 23. a universal meter; 3. a gas release unit; 31. a pressure reducing valve; 32. a hydrogen discharge pipeline.
Detailed Description
The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form a part hereof, and which are used to illustrate, but not to limit the invention.
As shown in fig. 1 to 3, a device of losing heart of on-vehicle hydrogen storage cylinder hydrogen of safe discharge, hydrogen storage cylinder 1 includes bottle 11, temperature sensor 12, bottleneck valve 13 and flow valve 14, bottle 11 inside be formed with hydrogen storage space and its one end seted up with the bottleneck that hydrogen storage space is linked together, bottleneck valve 13 is sealed to be located bottleneck department, flow valve 14 links to each other with bottleneck valve 13, temperature sensor 12 locates in the hydrogen storage space and its two contacts 121 stretch out the bottleneck, it includes detecting element 2 and loses heart unit 3 to lose heart the device.
The detection unit 2 is electrically connected to the temperature sensor 12 through the two contacts 121, and the detection unit 2 is configured to detect a resistance value of the temperature sensor 12, so as to detect the temperature inside the bottle 11.
The gas release unit 3 is communicated with the middle flow valve 14, hydrogen in the bottle body 11 can be discharged through the bottleneck valve 13, the middle flow valve 14 and the gas release unit 3 in sequence, and the gas release unit 3 is used for adjusting the gas outlet pressure of the hydrogen and releasing the hydrogen.
In the using process of the air release device for safely releasing the hydrogen of the vehicle-mounted hydrogen storage cylinder 1, when the cylinder 11 does not start to release the hydrogen, the detection unit 2 can detect the resistance value of the temperature sensor 12, and can obtain the temperature inside the cylinder 11 according to the parameter change relationship between the temperature of the temperature sensor 12 and the resistance value, when the temperature inside the cylinder 11 does not reach the set value, the air release unit 3 can adjust the gas outlet pressure of the hydrogen and release the hydrogen, and along with the release of the hydrogen, the detection unit 2 detects the change of the resistance value of the temperature sensor 12 and obtains the temperature inside the cylinder 11 again, when the temperature inside the cylinder 11 does not reach the set value, the release of the hydrogen is continued, when the temperature inside the cylinder 11 reaches the set value, the release of the hydrogen can be stopped through the air release unit 3, after a period of time, observing that the detection unit 2 detects the resistance value of the temperature sensor 12, and obtaining the temperature inside the bottle body 11 again until the temperature inside the bottle body 11 does not reach a set value, and when the temperature inside the bottle body 11 does not reach the set value, repeating the air leakage step again until the detection unit 2 detects that the resistance value of the temperature sensor 12 does not change any more and the hydrogen release of the bottle body 11 is completed; according to the air release device for safely releasing the hydrogen of the vehicle-mounted hydrogen storage cylinder 1 and the using method thereof, the detection unit 2 is arranged to indirectly detect the temperature inside the bottle body 11, if the temperature inside the bottle body 11 is about to reach the temperature corresponding to the designed pressure bearing capacity of the valve or the steel pipe, the release of the hydrogen can be stopped through the air release unit 3, and the risk of explosion does not exist in the valve and the steel pipe, so that the hydrogen of the vehicle-mounted hydrogen storage cylinder 1 can be safely released.
Since the model and name plate parameters of the temperature sensor 12 are known, the parameter change relationship between the temperature of the temperature sensor 12 and the resistance value is known, and when the detection unit 2 detects that the resistance value of the temperature sensor 12 changes, the temperature inside the bottle body 11 can be calculated, so that when the temperature inside the bottle body 11 does not reach a set value, hydrogen can be continuously and safely discharged.
Wherein, the temperature inside the bottle body 11 does not reach the set value: the temperature in the bottle body 11 is normal, the valve and the steel pipe are free from the risk of explosion, and hydrogen can be continuously and safely discharged; the temperature inside the bottle body 11 reaching the set value means: the temperature inside the bottle body 11 is abnormal, and the valve and the steel pipe have the risk of blasting, and hydrogen can not be discharged at the moment.
The above-mentioned set value is generally higher than the actual lowest working temperature, for example, the minimum working temperature is specified to be-40 ℃ on the name plate of the central flow valve 14 connected with the mouth valve 13 of the hydrogen storage cylinder 1 of the costa hydrogen energy vehicle, when the temperature is lower than-40 ℃, the explosion risk exists, therefore, the set value can be set to be-38 ℃ or higher, when the temperature inside the cylinder 11 reaches the set value, the risk of explosion does not exist between the valve and the steel pipe, then the releasing of hydrogen gas is stopped by the gas release unit 3, then the temperature inside the cylinder 11 rises under the action of the ambient temperature after a period of time, and then the hydrogen gas can be released continuously by the gas release unit 3.
Wherein, the valve or the steel pipe is an air leakage structure of the hydrogen energy automobile.
In another preferred embodiment, the detecting unit 2 includes a power source 21, a protection resistor 22 and a multimeter 23, one interface of the power source 21 is electrically connected to the multimeter 23 and one of the contacts 121 in sequence, the other interface of the power source 21 is electrically connected to the other contact 121, the two interfaces of the power source 21 are electrically connected to the two interfaces of the protection resistor 22 in a one-to-one correspondence manner, and the multimeter 23 is configured to detect the current of the temperature sensor 12, so as to detect the resistance of the temperature sensor 12 and the temperature inside the bottle 11. The detecting unit 2 comprises a power supply 21, a protective resistor 22 and a universal meter 23, an interface of the power supply 21 sequentially communicates with the protective resistor 22 and one of the contacts 121, another interface of the power supply 21 communicates with another of the contacts 121, two interfaces of the universal meter 23 respectively communicate with the two contacts 121 in a one-to-one correspondence manner, and the universal meter 23 is used for detecting the voltage of the temperature sensor 12 so as to detect the resistance of the temperature sensor 12 and the temperature inside the bottle body 11. Since the actual operating principle of the multimeter 23 is the same when it is used for detecting the current or voltage of the temperature sensor 12, the following specific embodiment mainly takes the example that the multimeter 23 is used for detecting the voltage of the temperature sensor 12 as an example.
In another preferred embodiment, the gas release unit 3 comprises a pressure reducing valve 31 and a hydrogen discharge pipe 32, one end of the pressure reducing valve 31 is communicated with the central flow valve 14, the other end of the pressure reducing valve 31 is communicated with the hydrogen discharge pipe 32, the pressure reducing valve 31 is used for adjusting the gas outlet pressure of hydrogen and releasing hydrogen, and the hydrogen discharge pipe 32 is used for discharging hydrogen. An air outlet pressure gauge is arranged at an air outlet of the pressure reducing valve 31. And an air inlet pressure gauge is arranged at an air inlet of the pressure reducing valve 31. This is designed to facilitate detection of the inlet pressure and outlet pressure of the pressure reducing valve 31, and the outlet pressure of hydrogen gas can be adjusted by the pressure reducing valve 31.
In another preferred embodiment, the resistance of the protection resistor 22 is adjustable. The range of the multimeter 23 is adjustable. The output voltage of the power supply 21 is adjustable. Because the hydrogen energy automobile parts of different brands are not completely the same, namely the temperature sensors 12 in the hydrogen storage cylinder 1 can be of different models or different brands, in order to adapt to different temperature sensors 12 to a greater extent and to detect the resistance value of the specific temperature sensor 12 so as to obtain the temperature in the hydrogen storage cylinder 1, the resistance value of the protection resistor 22, the measuring range of the multimeter 23 and the output voltage of the power supply 21 can be adjusted to adapt to different application situations, and the universality is strong.
The use method of the air leakage device for safely discharging the hydrogen of the vehicle-mounted hydrogen storage cylinder 1 in any embodiment comprises the following steps:
s1: acquiring the resistance value of the temperature sensor 12, and acquiring the real-time temperature inside the bottle body 11 according to the parameter variation relation between the temperature of the temperature sensor 12 and the resistance value;
s2: when the temperature in the bottle body 11 is higher than a set value, adjusting the outlet pressure of the hydrogen and releasing the hydrogen;
s3: when the temperature inside the bottle body 11 reaches a set value, the release of hydrogen is stopped;
s4: the steps of S2 and S3 are repeated until it is detected that the resistance value of the temperature sensor 12 is not changed any more and the hydrogen gas release from the bottle 11 is completed.
In a specific embodiment, for example, the minimum operating temperature of-40 ℃ is specified in the name plate of the center flow valve 14 connected to the mouth valve 13 of the hydrogen storage cylinder 1 of a Korsak hydrogen energy automobile, and when the temperature sensor 12 is a certain type of temperature sensor 12, the parameter changes of the temperature and the resistance value of the temperature sensor 12 are shown in Table 1, wherein T represents the temperature, and R represents the temperaturetRepresents the resistance value:
| T/℃ | Rt/ |
| 30 | 5.90747002766677 |
| 20 | 9.16129032258064 |
| 10 | 14.5932992089344 |
| 0 | 23.9428208386277 |
| -10 | 40.5947467166979 |
| -20 | 71.2122571001495 |
| -30 | 129.664961636829 |
| -40 | 247.215962441314 |
TABLE 1
A variation curve of the temperature sensor 12 and the resistance value (as shown in fig. 3) can be drawn according to table 1, and when the resistance value of the temperature sensor 12 is detected by the detecting unit 2, the temperature inside the bottle 11 can be obtained according to the variation curve shown in fig. 3.
Specifically, before the hydrogen gas is discharged, the pressure reducing valve 31 is closed, when the multimeter 23 is a voltmeter, the range of the voltmeter is adjusted to a 20V gear, the power supply 21 is a 5V direct current power supply 21, the resistance value of the protection resistor 22 is 11k omega, one end of the power supply 21 is electrically connected with the protection resistor 22 and the contact 121 in sequence, the other end of the power supply 21 is electrically connected to another contact 121, the two interfaces of the multimeter 23 are electrically connected to the two contacts 121 one by one, the voltmeter is used for detecting the voltage of the temperature sensor 12 so as to detect the resistance value of the temperature sensor 12 and the temperature inside the bottle body 11, corresponding to the parameters in the above embodiment, the relationship between the temperature T of the temperature sensor 12 and the voltage indicating number U can be obtained, as shown in table 2 below:
| T/℃ | U/ |
| 30 | 1.747 |
| 20 | 2.272 |
| 10 | 2.851 |
| 0 | 3.426 |
| -10 | 3.934 |
| -20 | 4.331 |
| -30 | 4.609 |
| -40 | 4.787 |
TABLE 2
As can be seen from tables 1 and 2, the temperature T of the temperature sensor 12 can be estimated from the voltage indicating number U.
Therefore, after combining the application parameters in the above embodiments, the use method of the gas leakage device for safely discharging the hydrogen gas from the vehicle-mounted hydrogen storage cylinder 1 according to an embodiment of the present invention is as follows:
when the bottle body 11 does not start to discharge hydrogen, the voltage indication displayed on the multimeter 23 is 2.2V, the temperature T of the temperature sensor 12 is calculated through the meter 2, the corresponding temperature T is about 20 ℃, the temperature sensor 12 is judged to be normal by comparing with the current ambient temperature (21 ℃), the bottle mouth valve 13 and the throttle valve 14 on the bottle body 11 are opened, the indication on the inlet pressure gauge of the pressure reducing valve 31 is 1.4Mpa (wherein, the pressure reducing valve 31 is provided with an inlet pressure gauge and an outlet pressure gauge, whether the indication on the inlet pressure gauge of the pressure reducing valve 31 is abnormal is generally considered that the inlet pressure of the pressure reducing valve 31 is lower than 1.6Mpa is normal by observing whether the indication on the inlet pressure gauge of the pressure reducing valve 31 is abnormal, the pressure reducing valve 31 is opened slowly after confirmation, the outlet pressure gauge of the pressure reducing valve 31 is observed, the outlet pressure is generally adjusted to be lower than 0.6Mpa, and the hydrogen storage is started to be discharged from the gas bottle 1), because 1.4Mpa is less than 1.6Mpa, judge that the registration on the inlet pressure gauge of relief pressure valve 31 is normal, adjust 31 outlet pressure of relief pressure valve to 0.6Mpa and release hydrogen, observe simultaneously universal meter 23 voltage registration appears in the release process universal meter 23 voltage registration and increases when 4V, the safety is the purpose, closes 31 relief pressure valve, when 23 voltage registration of universal meter shows at 3V or is less than 3V, adjust 31 outlet pressure of relief pressure valve to 0.6Mpa and continue to release hydrogen, it finishes until hydrogen releases.
Compared with the prior art, the air leakage device for safely discharging the hydrogen of the vehicle-mounted hydrogen storage cylinder 1 and the use method thereof have the following beneficial effects:
set up detecting element 2 can indirectly detect the inside temperature of bottle 11, if the inside temperature of bottle 11 will reach the temperature that valve or steel pipe design bearing capacity correspond soon, then the accessible unit 3 that loses heart stops releasing hydrogen, and valve and steel pipe just do not have the risk of blasting then, can safely discharge the hydrogen of on-vehicle hydrogen storage gas cylinder 1.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are within the scope of the present invention.
Claims (10)
1. The gas release device for safely releasing hydrogen of the vehicle-mounted hydrogen storage cylinder comprises a cylinder body, a temperature sensor, a cylinder opening valve and a throttle valve, wherein a hydrogen storage space is formed inside the cylinder body, a cylinder opening communicated with the hydrogen storage space is formed at one end of the cylinder body, the cylinder opening valve is arranged at the cylinder opening in a sealing manner, the throttle valve is connected with the cylinder opening valve, the temperature sensor is arranged in the hydrogen storage space, and two contacts of the temperature sensor extend out of the cylinder opening;
the detection unit is electrically connected with the temperature sensor through the two contacts and is used for detecting the resistance value of the temperature sensor so as to detect the temperature in the bottle body;
the gas release unit is communicated with the middle flow valve, hydrogen in the bottle body can be discharged through the bottleneck valve, the middle flow valve and the gas release unit in sequence, and the gas release unit is used for adjusting the gas outlet pressure of the hydrogen and releasing the hydrogen.
2. The leak device of safe discharging vehicle-mounted hydrogen storage cylinder according to claim 1, wherein the detection unit comprises a power supply, a protection resistor and a universal meter, one interface of the power supply is sequentially electrically connected with the universal meter and one contact, the other interface of the power supply is electrically connected with the other contact, the two interfaces of the power supply are respectively electrically connected with the two interfaces of the protection resistor in a one-to-one correspondence manner, and the universal meter is used for detecting the current of the temperature sensor so as to detect the resistance value of the temperature sensor and the temperature inside the bottle body.
3. The leak device of safe discharging vehicle-mounted hydrogen storage cylinder according to claim 1, characterized in that, the detecting unit comprises a power supply, a protection resistor and a multimeter, one interface of the power supply sequentially connects with the protection resistor and one contact electrically, the other interface of the power supply connects with the other contact electrically, two interfaces of the multimeter respectively connect with two contacts one-to-one electrically, the multimeter is used for detecting the voltage of the temperature sensor, so as to detect the resistance of the temperature sensor and the temperature inside the bottle body.
4. The leak device of safe discharge on-vehicle hydrogen storage cylinder hydrogen of claim 3, characterized in that, the unit of disappointing includes relief pressure valve and row hydrogen pipeline, the one end of relief pressure valve with well flow valve is linked together, the other end of relief pressure valve with row hydrogen pipeline is linked together, the relief pressure valve is used for adjusting hydrogen pressure of giving vent to anger and release hydrogen, row hydrogen pipeline is used for discharging hydrogen.
5. The gas release device for safely releasing hydrogen gas from a vehicle-mounted hydrogen storage cylinder according to claim 4, wherein a gas outlet pressure gauge is provided at a gas outlet of the pressure reducing valve.
6. The gas release device for safely releasing hydrogen gas from a vehicle-mounted hydrogen storage cylinder according to claim 5, wherein a gas inlet pressure gauge is provided at a gas inlet of the pressure reducing valve.
7. The gas release device for safely releasing hydrogen gas from a vehicle-mounted hydrogen storage cylinder according to claim 6, wherein the protection resistor has an adjustable resistance.
8. The gas release device for safely releasing hydrogen gas from a vehicle-mounted hydrogen storage cylinder according to claim 6, wherein the range of the multimeter is adjustable.
9. The gas release device for safely releasing hydrogen gas from a vehicle-mounted hydrogen storage cylinder according to claim 6, wherein the output voltage of the power supply is adjustable.
10. The use method of the air-release device for safely releasing the hydrogen gas from the vehicle-mounted hydrogen storage cylinder according to any one of claims 1 to 9, characterized in that the use method comprises the following steps:
s1: acquiring the resistance value of the temperature sensor, and acquiring the real-time temperature inside the bottle body according to the parameter change relation between the temperature of the temperature sensor and the resistance value;
s2: when the temperature in the bottle body is higher than a set value, adjusting the gas outlet pressure of the hydrogen and releasing the hydrogen;
s3: when the temperature in the bottle body reaches a set value, the hydrogen is stopped to be released;
s4: repeating the steps of S2 and S3 until the resistance value of the temperature sensor is detected not to be changed any more and the hydrogen release from the bottle body is completed.
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| CN114216048B (en) | 2023-07-28 |
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