CN108870072B - Controllable steering pressure relief device of new energy automobile high-pressure hydrogen storage system - Google Patents
Controllable steering pressure relief device of new energy automobile high-pressure hydrogen storage system Download PDFInfo
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- CN108870072B CN108870072B CN201810567566.0A CN201810567566A CN108870072B CN 108870072 B CN108870072 B CN 108870072B CN 201810567566 A CN201810567566 A CN 201810567566A CN 108870072 B CN108870072 B CN 108870072B
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- Prior art keywords
- steering
- pressure relief
- pressure
- storage system
- new energy
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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
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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
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/05—Size
- F17C2201/056—Small (<1 m3)
-
- 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
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/01—Pure fluids
- F17C2221/012—Hydrogen
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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
- F17C2270/00—Applications
- F17C2270/01—Applications for fluid transport or storage
- F17C2270/0165—Applications for fluid transport or storage on the road
- F17C2270/0184—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
- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention provides a controllable steering pressure relief device of a high-pressure hydrogen storage system of a new energy automobile, and belongs to the technical field of machinery. It has solved the safety problem that current fixed orientation pressure release technique exists, has realized reliable on-vehicle high pressure hydrogen pressure release and has turned to the function. This pressure relief device includes hot melt relief valve, guiding tube and steering tube, above-mentioned guiding tube is connected and both are linked together with hot melt relief valve, above-mentioned steering tube is L shape, the inner cover of steering tube links firmly in guiding tube outer end and both axial, above-mentioned steering tube department has locking structure, steering tube outer end is perpendicular downwards during initial state, and above-mentioned steering tube is fixed a position under locking structure's effect, still include a driving piece, above-mentioned driving piece can drive steering tube swing 40 ~ 60 degrees and can be fixed a position the steering tube after the swing through above-mentioned locking structure. This pressure relief device compact structure stability is high, turns to the accident hazard that the function can show to alleviate the pressure release and arouse through reliable pressure release, improves the security of on-vehicle high pressure hydrogen storage system.
Description
Technical Field
The invention belongs to the technical field of machinery, and relates to a controllable steering pressure relief device of a high-pressure hydrogen storage system of a new energy automobile.
Background
New energy automobiles are a strategic emerging industry which is mainly supported and developed in China. Among them, the hydrogen fuel cell vehicle has a good development trend due to its significant advantages of high energy efficiency, zero emission, and the like.
However, the safety problem is one of obstacles hindering the popularization of hydrogen fuel cell vehicles. The properties of high-pressure storage, easy leakage, flammability, explosiveness and the like of the hydrogen enable the vehicle-mounted high-pressure hydrogen to become a dangerous source, and different types of accident consequences can be generated under different conditions.
Hydrogen is typically stored at high pressures on fuel cell vehicles, up to 35MPa to 70 MPa. The experimental data of catastrophic explosion experiments of 35MPa vehicle-mounted high-pressure hydrogen storage bottles in American Pacific laboratories show that the diameter of a fireball reaches 24 meters, and the ejection of fragments reaches 104 meters.
In order to avoid the result of the catastrophic accident, the vehicle-mounted high-Pressure hydrogen storage system must be equipped with a hot-melt Pressure Relief valve TPRD (thermal-activated Pressure Relief Device), under the fire environment, the plug is melted, and the hot-melt Pressure Relief valve is opened so that the Pressure in the hydrogen storage bottle can be released in time, thereby avoiding the occurrence of the result of the catastrophic explosion accident.
Although the TPRD has avoided the storage cylinder catastrophic explosion, the current on-vehicle high pressure stores up hydrogen hot melt relief valve and is the design of fixed orientation, and the valve is ordinary fixed structure, and flame surrounds the vehicle when the pressure release takes place, brings great risk to personnel's in the car flee for one's life, leads to its safety of fleing than relatively poor.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provide a controllable steering pressure relief device of a high-pressure hydrogen storage system of a new energy automobile, which has a compact structure and high stability.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides a controllable pressure relief device that turns to of new energy automobile high pressure hydrogen storage system, the last gas bomb that is used for storing hydrogen that has of new energy automobile, the pressure release mouth has on the gas bomb, this pressure relief device connects in pressure release mouth department, a serial communication port, this device includes hot melting relief valve, guiding tube and steering tube, above-mentioned guiding tube is connected with hot melting relief valve and both are linked together, above-mentioned steering tube is L shape, the inner pot head of steering tube links firmly in guiding tube outer end and both axial, above-mentioned steering tube department has locking structure, steering tube outside end is perpendicular downwards during initial state, and above-mentioned steering tube is fixed a position under locking structure's effect, still include a driving piece, above-mentioned driving piece can drive steering tube swing 40 ~ 60 degrees and can be fixed a position the steering tube after the swing through.
Pressure relief is divided into two cases:
firstly, when people exist in the vehicle and no other people or vehicles exist behind the vehicle, the driving piece drives the steering tube to swing by 40-60 degrees, and then the steering tube is positioned under the action of the locking structure. And then the hot-melting pressure relief valve is opened, and hydrogen in the gas storage cylinder is discharged to the rear of the vehicle through the hot-melting pressure relief valve, the guide pipe and the steering pipe in sequence.
In the process, the combustion hydrogen discharged downwards in a downward inclination manner is positioned at the rear part outside the vehicle body, so that the escape of a driver at the front door and passengers at the rear door of the vehicle body is not influenced;
and secondly, when no person exists in the vehicle and other persons and vehicles exist outside the vehicle, the driving part does not act, and at the moment, the outer port of the rotating pipe is vertically downward. And opening the hot-melting pressure release valve, and discharging the hydrogen in the gas storage cylinder outwards through the hot-melting pressure release valve, the guide pipe and the steering pipe in sequence.
The combustion hydrogen gas which is vertically discharged downwards out of the vehicle body in the process is limited near the vehicle, and the injury to people around the vehicle is reduced to the minimum.
In the controllable steering pressure relief device of the new energy automobile high-pressure hydrogen storage system, the outlet of the hot-melting pressure relief valve is provided with a straight-section buffer zone communicated with the outlet of the hot-melting pressure relief valve, and the inner end of the guide pipe is fixedly connected to the buffer zone.
In the controllable steering pressure relief device of the new energy automobile high-pressure hydrogen storage system, the buffer area is cylindrical, and the guide pipe is perpendicular to the buffer area.
In the controllable steering pressure relief device of the new energy automobile high-pressure hydrogen storage system, the inner end of the buffer area is fixedly connected with the hot-melting pressure relief valve, the outer end of the buffer area is closed, and the buffer area is internally provided with the buffer structure.
The guide tube can be stably connected with the buffer zone. Meanwhile, the plug on the hot-melt pressure relief valve can be popped up under the action of high pressure after the hot-melt pressure relief valve is opened. The impact force of the plug during ejection can be borne by the buffer structure in the buffer area.
In the controllable steering pressure relief device of the new energy automobile high-pressure hydrogen storage system, the buffer structure comprises a flexible buffer cylinder, and the buffer cylinder is matched with the buffer area.
In the controllable steering pressure relief device of the new energy automobile high-pressure hydrogen storage system, the buffer cylinder is made of foamed aluminum.
In the controllable steering pressure relief device of the new energy automobile high-pressure hydrogen storage system, the driving piece is a servo motor, the steering pipe is fixedly connected with a driven wheel, the servo motor is fixedly connected to the automobile body, a rotating shaft of the servo motor is fixedly connected with a driving wheel, and the driving wheel is meshed with the driven wheel.
In the process that the servo motor drives the driving wheel to rotate, the position of the steering tube is correspondingly changed while the driven wheel rotates stably.
In the controllable steering pressure relief device of the new energy automobile high-pressure hydrogen storage system, the locking structure comprises two U-shaped buckles, the buckles have elasticity, the size of the end openings of the buckles is smaller than the middle size of the buckles, one of the buckles is positioned right below the steering tube, the other buckle is positioned on the side part of the steering tube, and the steering tube can be embedded into any one buckle after swinging.
The included angle between the two buckles is 40-60 degrees, and when the steering tube is connected with the buckle right below the steering tube, the outer end of the steering tube is vertically downward and positioned; when another buckle of the steering tube is connected, the steering tube swings by 40-60 degrees and the swung steering tube is positioned by the other buckle. The two buckles are fixedly connected to the vehicle body.
In the controllable steering pressure relief device of the high-pressure hydrogen storage system of the new energy automobile, the swing amplitude of the steering pipe is 45 degrees.
In the controllable steering pressure relief device of the new energy automobile high-pressure hydrogen storage system, the buffer area and the guide pipe are of an integrated structure.
This improves the compactness of the entire device.
In the controllable steering pressure relief device of the new energy automobile high-pressure hydrogen storage system, the ratio of the inner diameter of the steering tube to the inner diameter of the pressure relief opening is 1: 1.5 to 1.6.
In the controllable steering pressure relief device of the high-pressure hydrogen storage system of the new energy automobile, the ratio value between the length of the steering pipe and the inner diameter of the steering pipe is 1: 5-10.
And through calculation of hydrodynamic resistance loss, the steering tube with the proportional size is the optimal design parameter. The original pressure relief function can be ensured to be intact, and the pressure relief efficiency is optimal.
In the controllable steering pressure relief device of the new energy automobile high-pressure hydrogen storage system, the automobile body is fixedly connected with a protective shell with a cavity inside, the servo motor is connected in the protective shell, and a rotating shaft of the servo motor extends out of the protective shell to be connected with the driving wheel.
The protective shell is made of a material with good fire resistance, such as: high temperature resistant ceramic material adopts the protective housing can have and avoids servo motor to receive too high temperature to guarantee that servo motor can stable operation.
Compared with the prior art, steerable guide hot melt relief valve of steering tube leaks directional unmanned area in this device, and fast and stable carries out the pressure release operation to the gas bomb, turns to the accident hazard that can show to alleviate the pressure release and arouse through reliable pressure release, reduces the inside and outside personnel's of car risk level, improves on-vehicle high pressure hydrogen storage system's security.
Meanwhile, the pressure relief stability of the device can be effectively ensured under the action of the locking structure, the buffer area and the protective shell.
Drawings
Fig. 1 is a schematic structural diagram of a controllable steering pressure relief device of the new energy automobile high-pressure hydrogen storage system.
Fig. 2 is a schematic structural diagram of a buckle in a controllable steering pressure relief device of a high-pressure hydrogen storage system of a new energy automobile.
In the figure, 1a, a gas cylinder; 2. a hot-melt pressure relief valve; 3. a guide tube; 4. a steering tube; 5. a buffer area; 6. a buffer cylinder; 7. a servo motor; 8. a driving wheel; 9. a driven wheel; 10. buckling; 11. a protective shell.
Detailed Description
The new energy automobile is provided with a gas storage bottle 1a used for storing hydrogen, the gas storage bottle 1a is provided with a pressure relief opening, and the pressure relief device is connected to the pressure relief opening.
As shown in fig. 1 and fig. 2, the controllable steering pressure relief device of the new energy automobile high-pressure hydrogen storage system comprises a hot-melting pressure relief valve 2, a guide tube 3 and a steering tube 4, wherein the guide tube 3 is connected with the hot-melting pressure relief valve 2 and communicated with the hot-melting pressure relief valve 2, the steering tube 4 is in an L shape, the inner end of the steering tube 4 is sleeved at the outer end of the guide tube 3 and is fixedly connected with the outer end of the guide tube in the axial direction, the steering tube 4 is provided with a locking structure, the outer end of the steering tube 4 is vertically downward in an initial state, the steering tube 4 is positioned under the action of the locking structure, and the controllable steering pressure relief device further comprises a driving piece, the driving piece can drive.
The outlet of the hot-melting pressure release valve 2 is provided with a buffer zone 5 which is communicated with the outlet and is in a straight section shape, and the inner end of the guide pipe 3 is fixedly connected on the buffer zone 5.
The buffer area 5 is cylindrical, and the guide tube 3 is perpendicular to the buffer area 5.
The inner end of the buffer area 5 is fixedly connected with the hot-melting pressure release valve 2, the outer end of the buffer area 5 is closed, and a buffer structure is arranged in the buffer area 5.
The buffer structure comprises a flexible buffer cylinder 6, and the buffer cylinder 6 is matched with the buffer area.
The buffer cylinder 6 is made of foamed aluminum material.
The driving piece is a servo motor 7, a driven wheel 9 is fixedly connected to the steering tube 4, the servo motor 7 is fixedly connected to the vehicle body 1, a rotating shaft of the servo motor 7 is fixedly connected with a driving wheel 8, and the driving wheel 8 is meshed with the driven wheel 9.
The locking structure comprises two U-shaped buckles 10, the buckles 10 have elasticity, the size of the end opening of each buckle 10 is smaller than the size of the middle of each buckle, one buckle 10 is located right below the steering tube 4, the other buckle 10 is located on the side of the steering tube 4, and the steering tube 4 can be embedded into any buckle 10 after swinging.
The swing amplitude of the steering tube 4 is 45 degrees.
In this embodiment, a ratio value between the inner diameter of the steering pipe and the inner diameter of the pressure relief port is 1: 1.5 to 1.6. The ratio value between the length of the steering tube and the inner diameter of the steering tube is 1: 5-10.
The automobile body is fixedly connected with a protective shell 11 with a cavity inside, the servo motor 7 is connected in the protective shell 11, and a rotating shaft of the servo motor 7 extends out of the protective shell 11 to be connected with the driving wheel 8.
The buffer area 5 and the guide pipe 3 are of an integrated structure.
Claims (10)
1. The utility model provides a controllable pressure relief device that turns to of new energy automobile high pressure hydrogen storage system, the gas bomb that is used for saving hydrogen has on the new energy hydrogen fuel automobile, the pressure release mouth has on the gas bomb, this pressure relief device connects in pressure release mouth department, a serial communication port, this device includes hot melt relief valve, guiding tube and steering tube, above-mentioned guiding tube is connected with hot melt relief valve and both are linked together, above-mentioned steering tube is L shape, the inner pot head of steering tube links firmly in guiding tube outer end and both axial, above-mentioned steering tube department has locking structure, steering tube outside end is perpendicular downwards during initial state, and above-mentioned steering tube is fixed a position under locking structure's effect, still include a driving piece, above-mentioned driving piece can drive steering tube swing 40 ~ 60 degrees and can be fixed a position the steering tube after the swing through above.
2. The controllable steering pressure relief device of the new energy automobile high-pressure hydrogen storage system according to claim 1, wherein an outlet of the hot-melt pressure relief valve is provided with a straight buffer zone communicated with the outlet, and an inner end of the guide pipe is fixedly connected to the buffer zone.
3. The controllable steering pressure relief device of the new energy automobile high-pressure hydrogen storage system according to claim 2, wherein the buffer area is cylindrical, and the guide pipe is perpendicular to the buffer area.
4. The controllable steering pressure relief device of the new energy automobile high-pressure hydrogen storage system according to claim 3, wherein the inner end of the buffer zone is fixedly connected with the hot-melting pressure relief valve, the outer end of the buffer zone is closed, and the buffer zone is internally provided with a buffer structure.
5. The controllable steering pressure relief device of the new energy automobile high-pressure hydrogen storage system according to claim 4, wherein the buffer structure comprises a flexible buffer cylinder, the buffer cylinder is matched with the buffer area, and the buffer material is foamed aluminum.
6. The controllable steering pressure relief device of the new energy automobile high-pressure hydrogen storage system according to claim 5, wherein the driving member is a servo motor, the steering pipe is fixedly connected with a driven wheel, the servo motor is fixedly connected to the automobile body, a rotating shaft of the servo motor is fixedly connected with a driving wheel, and the driving wheel is meshed with the driven wheel.
7. The controllable steering pressure relief device of the new energy automobile high-pressure hydrogen storage system according to claim 6, wherein the locking structure comprises two U-shaped buckles, the buckles have elasticity, and the size of the buckle port is smaller than the middle size of the buckle, one buckle is located right below the steering tube, the other buckle is located at the side of the steering tube, and the steering tube can be embedded in any buckle after swinging.
8. The controllable steering pressure relief device of the new energy automobile high-pressure hydrogen storage system according to claim 7, wherein a ratio value between the inner diameter of the steering pipe and the inner diameter of the pressure relief port is 1: 1.5 to 1.6.
9. The controllable steering pressure relief device of the new energy automobile high-pressure hydrogen storage system according to claim 8, wherein the ratio of the length of the steering pipe to the inner diameter of the steering pipe is 1: 5-10.
10. The controllable steering pressure relief device of the new energy automobile high-pressure hydrogen storage system according to claim 6, wherein the body is fixedly connected with a protection shell with a cavity inside, the servo motor is connected in the protection shell, and a rotating shaft of the servo motor extends out of the protection shell and is connected with the driving wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810567566.0A CN108870072B (en) | 2018-06-05 | 2018-06-05 | Controllable steering pressure relief device of new energy automobile high-pressure hydrogen storage system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810567566.0A CN108870072B (en) | 2018-06-05 | 2018-06-05 | Controllable steering pressure relief device of new energy automobile high-pressure hydrogen storage system |
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| Publication Number | Publication Date |
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| CN108870072A CN108870072A (en) | 2018-11-23 |
| CN108870072B true CN108870072B (en) | 2020-08-18 |
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| CN201810567566.0A Active CN108870072B (en) | 2018-06-05 | 2018-06-05 | Controllable steering pressure relief device of new energy automobile high-pressure hydrogen storage system |
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| CN113833975B (en) * | 2020-06-23 | 2023-09-22 | 未势能源科技有限公司 | Gas storage bottle for vehicle and vehicle with gas storage bottle |
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| US6286536B1 (en) * | 1999-03-16 | 2001-09-11 | Vti Ventil Technikgmbh | Safety device for a vessel under gas pressure |
| JP2003342666A (en) * | 2002-03-20 | 2003-12-03 | Hamai Industries Ltd | Lead-free and cadmium-free low melting point alloy, temperature sensitive safety valve and fuse element |
| JP2009162255A (en) * | 2007-12-28 | 2009-07-23 | Toyota Motor Corp | Safety valve device, valve device, high-pressure gas tank and vehicle |
| CN201982022U (en) * | 2010-12-28 | 2011-09-21 | 舒雨聪 | Safe welding, pressure-releasing and flow-guiding pipe |
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| CN202900392U (en) * | 2012-10-30 | 2013-04-24 | 浙江吉利汽车研究院有限公司杭州分公司 | Automobile exhaust emission device |
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2018
- 2018-06-05 CN CN201810567566.0A patent/CN108870072B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10281398A (en) * | 1997-04-07 | 1998-10-23 | Neriki:Kk | Gas transfer unit, and safety valve used in this gas transfer unit |
| US6286536B1 (en) * | 1999-03-16 | 2001-09-11 | Vti Ventil Technikgmbh | Safety device for a vessel under gas pressure |
| JP2003342666A (en) * | 2002-03-20 | 2003-12-03 | Hamai Industries Ltd | Lead-free and cadmium-free low melting point alloy, temperature sensitive safety valve and fuse element |
| JP2009162255A (en) * | 2007-12-28 | 2009-07-23 | Toyota Motor Corp | Safety valve device, valve device, high-pressure gas tank and vehicle |
| CN201982022U (en) * | 2010-12-28 | 2011-09-21 | 舒雨聪 | Safe welding, pressure-releasing and flow-guiding pipe |
| CN202300605U (en) * | 2011-11-15 | 2012-07-04 | 河南奔马股份有限公司 | Silencer capable of regulating direction of exhaust tail pipe |
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| CN108870072A (en) | 2018-11-23 |
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