CN110360356A - A kind of hydrogen safety valve - Google Patents
A kind of hydrogen safety valve Download PDFInfo
- Publication number
- CN110360356A CN110360356A CN201910655302.5A CN201910655302A CN110360356A CN 110360356 A CN110360356 A CN 110360356A CN 201910655302 A CN201910655302 A CN 201910655302A CN 110360356 A CN110360356 A CN 110360356A
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- China
- Prior art keywords
- block
- pressure release
- elastic component
- binding face
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000001257 hydrogen Substances 0.000 title claims abstract description 38
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 38
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 239000007789 gas Substances 0.000 claims abstract description 48
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 28
- 230000006835 compression Effects 0.000 claims description 16
- 238000007906 compression Methods 0.000 claims description 16
- 230000006641 stabilisation Effects 0.000 abstract description 5
- 238000011105 stabilization Methods 0.000 abstract description 5
- 230000035945 sensitivity Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000036316 preload Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a kind of hydrogen safety valves, including pressure release block；Valve body, valve body are closed hollow structure, are bonded on the inside of valve body with pressure release block portion point, and valve body includes: abutting block, and pushing against block is the inwardly protruding formation of inner wall in the middle part of valve body, push against block and pressure release block lower part fits closely to form the first binding face；Gas storage portion, gas storage portion are the first binding face side and the hollow cavity that valve interior wall is formed, and gas storage portion is connected to gas source；Leakage port, leakage port are the first binding face other side and the hollow cavity that valve interior wall is formed.Pressure release block is set in valve body by the present invention, influences pressure release block by extraneous factor small, to the high sensitivity of pressure medium, safety valve is made to have stable set-pressure.It pushes against block and pressure release block fits closely, valve inner is divided into gas storage portion and leakage port two parts, medium can be effectively prevent to reveal；Block and the fitting contact of pressure release block are pushed against, when the air pressure of gas storage portion is excessive, pressure release portion and abutting block are separable, discharge part medium, to guarantee the stabilization and safety of medium overall pressure.
Description
Technical field
The present invention relates to security appliance fields, are related specifically to a kind of hydrogen safety valve.
Background technique
Automobile also produces many danger as one of the present age widest vehicles while offering convenience to the mankind
Evil, the Tail Gas that internal combustion motor vehicle emission goes out have seriously polluted the environment.Fuel-cell vehicle grows up therewith, as electric vehicle
One kind, the energy of fuel-cell vehicle battery are generated by the chemical action of hydrogen and oxygen, not by burning, so nothing
Poison is harmless pollution-free.But the big technical problem that fuel electric car faces is to need to use high pressure compressed Gaseous Hydrogen, close to improve energy
Degree.Hydrogen is easily protected from environmental phenomena such as exploding, institute as a kind of inflammable and explosive gas, and by high pressure compressed
Sealed reliable is required with hydrogen medium.
Currently, fuel-cell vehicle does not develop the safety valve specially designed for high pressure hydrogen also, and existing safety valve tune
Regulating device setting in exposed face, suffered by pressure be easy to be influenced by many factors, cause set-pressure unstable, can not
Vehicular vibration is violent when stablizing and open, and using, and valve, which is easy to loosen, to be caused to leak, and the safety valve sealing effect after discharge is not
It is good, also it is also easy to produce leakage.Therefore, the safety valve for inventing a kind of stable high pressure hydrogen not leaked of set-pressure is to be badly in need of instantly
The technical issues of solution.
Summary of the invention
One of the object of the invention is to provide a kind of hydrogen safety valve, to solve safety valve set pressure in the prior art
The technical issues of unstable easy loosening leaks.
The second object of the present invention is to provide a kind of pressure releasing method of hydrogen safety valve, to realize the adjusting pressure of safety valve
Power stabilization does not leak, and stablizes pressure release.
One of in order to achieve the above objectives, the invention adopts the following technical scheme:
A kind of hydrogen safety valve, including pressure release block, the pressure release block is for controlling medium outflow；Valve body, the valve body
For closed hollow structure, the valve body inside is bonded with the pressure release block portion point, and the valve body includes: abutting block, described to support
Tight block is the inwardly protruding formation of inner wall in the middle part of the valve body, and the abutting block and pressure release block lower part fit closely to form first
Binding face, first binding face will be for that will prevent medium from flowing out；Gas storage portion, the gas storage portion are first binding face side
The hollow cavity formed with the valve interior wall, the gas storage portion are connected to gas source, and the gas storage portion is used for storage medium；Lose heart
Mouthful, the leakage port is first binding face other side and the hollow cavity that the valve interior wall is formed, and the leakage port is used
In discharge medium.In the present embodiment, the abutting block and the pressure release block fit closely, by valve inner be divided into gas storage portion and
Leakage port two parts can effectively prevent medium to reveal；The abutting block and pressure release block fitting contact, when the gas storage portion
When air pressure is excessive, the pressure release portion and the abutting block are separable, discharge part medium, to guarantee the stabilization of medium overall pressure
And safety.The pressure release block is located in valve body, is influenced by extraneous factor small, to the high sensitivity of pressure medium, is conducive to protection
The safety of medium.
Further, in embodiments of the present invention, limited block is equipped with above the pressure release block, the limited block is equipped with opposite side
Structure, the opposite side structure includes bonding structure and gap structure.The bonding structure and leakage port inner wall fitting, it is described
It is not fitted with gap between gap structure and the leakage port, the discharge amount of safety valve can be increased, conducive to Jie in gas storage portion
The fast quick-recovery normal pressure of matter guarantees the safety of medium entirety.
Further, in embodiments of the present invention, the opposite side structure includes arc structure and short side structure, the length
Arc dia is slightly less than or is equal to the leakage port diameter, and the long arc and leakage port inner wall fitting, the comparison structure are
Symmetrical structure guarantees that the limited block and the pressure release block move up in the valve body in designated parties, and the long arc and
Frictional force between the leakage port inner wall is small, makes sensitive reaction to stress conducive to the limited block, guarantees safety；Two is long
It is equipped with short side structure between arc structure, forms big gap between the short side structure and the leakage port inner wall, is keeping limiting
Block position it is firm while increase discharge amount.
Further, in embodiments of the present invention, the abutting block includes the first guide surface, first guide surface position
In the abutting block top, first guide surface is horizontally disposed, and the limited block lower wall and first guide surface closely paste
It closes and forms the second binding face of energy.The limited block and first guide surface are fitted closely the limited block and the pressure release block
Position restriction with it is described abutting block fitting position, avoid occur strenuous vibration when the pressure release block and the abuttings block mistake
Position, avoids medium from revealing.
Further, in embodiments of the present invention, the abutting block further includes the second guide surface, second guide surface position
In the abutting block lower part, second guide surface and the pressure release block side wall fit closely to form the first binding face, and described
Two guide surfaces are vertically arranged.Second guide surface and the pressure release block are bonded vertically, make the pressure release block in the vertical direction
It can be moved along second guide surface, flexibly realize the switch of safety valve.
Further, in embodiments of the present invention, it is equipped with compression piece below the abutting block, the compression piece includes: rigid
Property block, the Stiff Block and the pressure release block vertically connect；Elastic component, the elastic component are located in the gas storage portion, described rigid
Property block passes perpendicularly through the elastic component；Fixing piece, the fixing piece are located at below the elastic component, the elastic component and it is described just
Property block vertically connects.The fixing piece is connected with the Stiff Block, and the elastic component is compressed in the abutting block and described solid
Determine between part, the elastic force to rebound to two sides is generated to the abutting block and the fixing piece after the elastic component compression, in elastic force
Under the action of the fixing piece generate to the trend mobile far from first binding face direction, pass through the rigidity to drive
The pressure release block that block is connect with the fixing piece generates the trend mobile to first binding face, force the pressure release block and
The abutting portion fits closely.The Stiff Block and the pressure release block, the fixing piece vertically connect, and the Stiff Block is vertically worn
Cross the elastic component, keep the active force of spring consistent with the trend of the Stiff Block, make the pressure release block in the valve body only
It is mobile that direction initialization can be prolonged.When pressure medium is higher than set-pressure, the medium power that the pressure release block is subject to is greater than pretightning force, institute
It is mobile to the direction far from first binding face under the action of medium power to state pressure release block, to drive the Stiff Block and institute
It is mobile to state fixing piece, the distance between the fixing piece and first binding face reduce, i.e., the described elastic component is compressed, described
The value of elastic of elastic component increases；Due to being moved outside the pressure release block, do not reclosed between the pressure release block and the abutting block, medium
The leakage port is flowed to from the gas storage portion in the position where first binding face, to reduce Jie in the gas storage portion
The pressure of matter to less than or be equal to set-pressure, at this point, the elastic force of the elastic component be greater than medium power, in elastic force under the action of institute
It states pressure release block and quickly recoils to the position being bonded with the abutting block, force the pressure release block and the abutting block tightly closely connected again
It closes.
Further, in embodiments of the present invention, the first mounting base is equipped with below the elastic component；First convex block, institute
The first convex block is stated as ring-type, first convex block is located at the first mounting base middle part, elastic component inside, the Stiff Block
Outside.First convex block is located on the inside of the elastic component to be connected with first mounting base, by the horizontal position of the elastic component
Set control in designated position, and by the compression of the elastic component with rebound direction be limited in it is consistent with the Stiff Block extending direction
Direction on, avoid the elastic component compress rebound or shock conditions under deviate, cause the pressure release block stress resultant force
The direction vertical with first binding face is deviateed in direction, avoids revealing.
Further, in embodiments of the present invention, first mounting base is equipped at least three half slots.The semicircle
Slot includes groove and tongue, the tongue and the fitting of gas storage portion inner wall, keeps hanging down for the Stiff Block and the elastic component
It is direct-connected to connect；Sector channel is formed between the groove and gas storage portion inner wall, increases media discharge amount.
Further, in embodiments of the present invention, supporting pad, the supporting pad position are equipped with above first mounting base
On the outside of first convex block, immediately below the elastic component, the supporting pad is ring-type.The elastic component lower wall is located at the branch
In support member, the lower wall of the elastic component is made entirely to be supported, increases the forced area when elastic component is compressed.The branch
Support member is ring-type, increases discharge amount on the basis of guaranteeing that the supporting element supports the elastic component completely.
Further, in embodiments of the present invention, it is equipped with sealing ring below first binding face, the sealing ring is located at
Below first binding face, the sealing ring and first binding face are fitted close the sealing effect for reinforcing safety valve.
Further, in embodiments of the present invention, the sealing ring is suitable hydrogen material, avoids sealing ring that hydrogen embrittlement occurs existing
As causing, sealing ring sealing effect is reduced, service life shortens.
Further, in embodiments of the present invention, the second mounting base, second installation are equipped with below the sealing ring
Seat is that middle part has the second convex block, and second convex block is located on the inside of the sealing ring.Second mounting base is by the sealing
The position restriction of circle avoids revealing below the abutting block and the pressure release block veneer.
In order to achieve the above objectives two, the invention adopts the following technical scheme:
A kind of pressure releasing method of hydrogen safety valve, includes the following steps:
It pre-tightens, the pre compressed magnitude of elastic component is determined according to set-pressure, is fixed the elastic component with fixing piece；The bullet
Property part the elastic force that rebound to two sides generated by compression, the fixing piece stress generates the movement tendency of separate first binding face, band
It moves the Stiff Block and generates the movement tendency far from first binding face, the pressure release block is driven to generate to first fitting
The trend of face movement, the abutting power of pretightning force and abutting block application that the pressure release block is applied by elastomer block, forces described let out
Briquetting and the abutting block fit closely；
Pressure accumulation, pressure medium increase but are less than or equal to set-pressure, and medium is flowed by the first mounting base and supporting pad
Gas storage portion generates to the pressure release block and pushes against the consistent medium power in power direction, and the abutting power for being subject to the pressure release block reduces,
The medium power that the pressure release block is subject to is less than pretightning force, and the pressure release block still by power is pushed against, forces the pressure release block and described
Block is pushed against still to keep fitting closely；
Pressure release, pressure medium are greater than set-pressure, and the medium power that the pressure release block is subject to is greater than pretightning force, the abutting block
Abutting power to the pressure release block is 0, and the pressure release block and the block that pushes against is forced to separate to separate first binding face
Direction is mobile, and the pressure release block drives the elastic component to be compressed again, and the elastic force that the elastic component generates increases, and makes described let out
The pretightning force that briquetting is subject to increase to it is equal with medium power, medium at first binding face from the gas storage portion flow direction lose heart
Mouthful.
It playbacks, the pressure medium in the gas storage portion decreases below set-pressure, the pretightning force that the pressure release block is subject to
Much larger than medium power, the direction where forcing the pressure release block to first binding face is mobile, the pressure release block and described supports
Tight block fits closely again.
The utility model has the advantages that
The present invention realizes the preload to pressure release block by setting elastic component, forces pressure release block and pushes against and closely pastes between block
It closes, is also not easy to reveal under strenuous vibration；Medium needs compression elastic piece when discharge, makes pressure release block and push against to separate between block, bullet
Property part compression after elastic force increase, after discharge pressure medium deteriorate to less than or be equal to set-pressure, and the decrement of elastic component increase
Add, so that the elastic force that pressure release block is subject to is much larger than medium power, pressure release block returning quickly under the action of elastic force, to the pressure for pushing against block
Power is high, makes pressure release block and push against to fit closely again between block, poor sealing effect after avoiding safety valve from discharging.
The present invention realizes the control to the pre compressed magnitude of elastic component by setting fixing piece, to realize to set-pressure
Control, since pressure release block and fixing piece are respectively positioned in valve body, and fixing piece and Stiff Block vertically connect, and make fixing piece to elasticity
The precommpression of part is extremely firm, and outside can not be adjusted, to guarantee the stabilization of set-pressure.
The present invention by setting limited block and the first mounting base, realize to elastic component, pressure release block it is bidirectionally limited, make elasticity
Part can only be compressed or be rebounded in Stiff Block extending direction, broken to keep pressure release block mobile in Stiff Block extending direction, make pressure release block
The direction of motion and the first binding face where plane remain vertically, make safety valve have good sealing effect.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is a kind of schematic perspective view of hydrogen safety valve of the present invention.
Fig. 2 is a kind of the schematic diagram of the section structure of hydrogen safety valve of the present invention.
Fig. 3 is a kind of bottom view of the flap of hydrogen safety valve of the present invention.
Fig. 4 is a kind of schematic diagram of the mounting base of hydrogen safety valve of the present invention.
Fig. 5 is a kind of schematic diagram of second of mounting base of hydrogen safety valve of the present invention.
Fig. 6 is a kind of schematic diagram of the third mounting base of hydrogen safety valve of the present invention.
Fig. 7 is a kind of schematic diagram of 4th kind of mounting base of hydrogen safety valve of the present invention.
In attached drawing
1, fixing piece 2, the first mounting base 2.1, half slot
3, supporting element 4, elastic component 5, the second mounting base
6, sealing ring 6.1, the first binding face 6.2, the second binding face
7, compression piece 7.1, limited block 7.2, pressure release block
7.3, Stiff Block 8, valve body 8.1, the first guide surface
8.2, the second guide surface 8.3, abutting block 8.4, gas storage portion
8.5, leakage port
Specific embodiment
The purpose of the present invention, technical solution are clearly and completely described and advantage is more clearly understood in order to make, with
The embodiment of the present invention is further elaborated in lower combination attached drawing.It should be appreciated that specific embodiment described herein is
A part of the embodiment of the present invention is only used to explain the embodiment of the present invention instead of all the embodiments, is not used to limit this
Inventive embodiments, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " center ", " in " "upper", "lower", "left", "right",
The orientation or positional relationship of the instructions such as "inner", "outside", "top", "bottom", " side ", "vertical", "horizontal" is based on the figure
Orientation or positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device of indication or suggestion meaning or
Element must have a particular orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.This
Outside, term " one ", " first ", " second ", " third ", " the 4th ", " the 5th ", " the 6th " are used for description purposes only, and cannot manage
Solution is indication or suggestion relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
For concise and explanation purpose, the principle of embodiment is described by referring mainly to example.In the following description,
Many details are suggested to provide a thorough understanding of embodiments.It will however be evident that.For ordinary skill
Personnel, these embodiments can be not limited to these details in practice.In some instances, it does not describe in detail known
Method and structure, to avoid unnecessarily making these embodiments become difficult to understand.In addition, all embodiments can be combined with each other
It uses.
Embodiment 1:
As shown in Figure 1 and Figure 2, a kind of hydrogen safety valve, including pressure release block 7.2, pressure release block 7.2 is for controlling medium flow field
Out；Valve body 8, valve body 8 are closed hollow structure, and 8 inside of valve body is bonded with 7.2 part of pressure release block, and valve body 8 includes: abutting block
8.3, abutting block 8.3 is the 8 inwardly protruding formation of middle part inner wall of valve body, pushes against block 8.3 and 7.2 lower part of pressure release block fits closely to be formed
First binding face 6.1, the first binding face 6.1 will be for that will prevent medium from flowing out；Gas storage portion 8.4, gas storage portion 8.4 are the first binding face
The hollow cavity that 6.1 sides and 8 inner wall of valve body are formed, gas storage portion 8.4 are connected to gas source, and gas storage portion 8.4 is used for storage medium；It lets out
Port 8.5, leakage port 8.5 are 6.1 other side of the first binding face and the hollow cavity that 8 inner wall of valve body is formed, and leakage port 8.5 is used for
Medium is discharged.It pushes against block 8.3 and pressure release block 7.2 fits closely, gas storage portion 8.4 and leakage port 8.5 two will be divided into inside valve body 8
Point, medium can be effectively prevent to reveal；Block 8.3 and the fitting contact of pressure release block 7.2 are pushed against, when 8.4 air pressure of gas storage portion is excessive, is let out
Splenium and abutting block 8.3 are separable, discharge part medium, to guarantee the stabilization and safety of medium overall pressure.Pressure release block 7.2
It is small in being influenced by extraneous factor in valve body 8, to the high sensitivity of pressure medium, conducive to the safety of protection medium.
As shown in Figure 1 and Figure 2, limited block 7.1 is equipped with above pressure release block 7.2, limited block 7.1 is equipped with opposite side structure, opposite side knot
Structure includes bonding structure and gap structure.Bonding structure and the fitting of 8.5 inner wall of leakage port, between gap structure and leakage port 8.5
It is not fitted with gap, the discharge amount of safety valve can be increased, conducive to the fast quick-recovery normal pressure of medium in gas storage portion 8.4, is protected
Demonstrate,prove the safety of medium entirety.
As shown in figure 3, opposite side structure includes arc structure and short side structure, long arc dia is slightly less than or is equal to leakage port
8.5 diameters, long arc and the fitting of 8.5 inner wall of leakage port, comparison structure is symmetrical structure, guarantees that limited block 7.1 and pressure release block 7.2 exist
Is moved up in designated parties in valve body 8, and the frictional force between 8.5 inner wall of long arc and leakage port is small, be conducive to limited block 7.1 to by
Masterpiece goes out sensitive reaction, guarantees safety；Short side structure, 8.5 inner wall of short side structure and leakage port are equipped between two long arc structures
Between form big gap, keep 7.1 position of limited block it is firm while increase discharge amount.
As shown in Figure 1 and Figure 2, pushing against block 8.3 includes the first guide surface 8.1, and the first guide surface 8.1, which is located at, to be pushed against on block 8.3
Portion, the first guide surface 8.1 is horizontally disposed, and 7.1 lower wall of limited block and the first guide surface 8.1 fit closely to form the second binding face of energy
6.2.Limited block 7.1 and the first guide surface 8.1 fit closely by the position restriction of limited block 7.1 and pressure release block 7.2 and push against
The position that block 8.3 is bonded avoids occurring pressure release block 7.2 when strenuous vibration and pushes against the dislocation of block 8.3, medium is avoided to reveal.
As shown in Figure 1 and Figure 2, pushing against block 8.3 further includes the second guide surface 8.2, and the second guide surface 8.2, which is located at, pushes against block 8.3
Lower part, the second guide surface 8.2 and 7.2 side wall of pressure release block fit closely to form the first binding face 6.1, and the second guide surface 8.2 is vertical
Setting.Second guide surface 8.2 and pressure release block 7.2 are bonded vertically, make pressure release block 7.2 in the vertical direction can be along the second guide surface
8.2 is mobile, flexibly realizes the switch of safety valve.
By be arranged the first guide surface 8.1, the second guide surface 8.2, make pressure release block 7.2 in the horizontal direction, vertical direction and
It pushes against block 8.3 to fit closely, the laminating degree for guaranteeing pressure release block 7.2 and pushing against between block 8.3 is high, also limits from both direction
Position of the pressure release block 7.2 in leakage port 8.5 keeps pressure release block 7.2 mobile in assigned direction, to guarantee safety valve
Leakproofness.
As shown in Figure 1 and Figure 2, it pushes against and is equipped with compression piece 7 below block 8.3, compression piece 7 includes: Stiff Block 7.3, Stiff Block
7.3 and pressure release block 7.2 vertically connect；Elastic component 4, elastic component 4 are located in gas storage portion 8.4, and Stiff Block 7.3 passes perpendicularly through elastic component
4；Fixing piece 1, fixing piece 1 are located at 4 lower section of elastic component, and elastic component 4 and Stiff Block 7.3 vertically connect.Fixing piece 1 and Stiff Block
7.3 connections, elastic component 4 is compressed in and is pushed against between block 8.3 and fixing piece 1, elastic component 4 compress after to pushing against block 8.3 and fixed
Part 1 generates the elastic force to rebound to two sides, and fixing piece 1 is generated to mobile far from 6.1 direction of the first binding face under the action of elastic force
Trend, move so that the pressure release block 7.2 being connect with fixing piece 1 by Stiff Block 7.3 be driven to generate to the first binding face 6.1
Trend forces pressure release block 7.2 and abutting portion to fit closely.Stiff Block 7.3 and pressure release block 7.2, fixing piece 1 vertically connect, rigidity
Block 7.3 passes perpendicularly through elastic component 4, keeps the active force of spring consistent with the trend of Stiff Block 7.3, makes pressure release block 7.2 in valve body 8
It is mobile that direction initialization can only be prolonged.When pressure medium is higher than set-pressure, the medium power that pressure release block 7.2 is subject to is greater than pretightning force,
Pressure release block 7.2 moves under the action of medium power to the direction far from the first binding face 6.1, to drive Stiff Block 7.3 and consolidate
It is mobile to determine part 1, the distance between fixing piece 1 and the first binding face 6.1 reduce, i.e., elastic component 4 is compressed, the elastic force of elastic component 4
Value increases；Due to being moved outside pressure release block 7.2, do not reclosed between pressure release block 7.2 and abutting block 8.3, medium is in the first binding face 6.1
The position at place flows to leakage port 8.5 from gas storage portion 8.4, to reduce the pressure of the medium in gas storage portion 8.4 to less than or wait
In set-pressure, at this point, the elastic force of elastic component 4 is greater than medium power, pressure release block 7.2 is quickly recoiled to and is supported under the action of elastic force
The position that tight block 8.3 is bonded forces pressure release block 7.2 and pushes against the tight conjunction closely connected again of block 8.3.
Elastic component 4 has good sensitivity compared to rigid objects, by the way that elastic component 4 is arranged, makes elastic component 4 to medium
Pressure makes rapid reaction, and acts on pressure release block 7.2, so that it is sensitive anti-to make that pressure release block 7.2 to pressure medium
It answers, to realize the protective effect of safety valve.
By reducing the diameter in gas storage portion 8.4, the stress of elastic component 4 can be made to reduce, so that the force value of elastic component 4 be made to subtract
It is small, improve the service life of elastic component 4 and safety valve.By reducing the diameter of leakage port 8.5, the Lift of pressure release block 7.2 can be made
Reach and be greater than d/4, to increase the discharge capacity of safety valve.
As shown in Figure 1 and Figure 2, the first mounting base 2 is equipped with below elastic component 4；First convex block, the first convex block is cyclic annular, and first
Convex block is located at 2 middle part of the first mounting base, 4 inside of elastic component, 7.3 outside of Stiff Block.First convex block is located at 4 inside of elastic component, and
The connection of first mounting base 2, the horizontal position of elastic component 4 is controlled in designated position, and by the compression of elastic component 4 and rebound direction
It is limited in and on the consistent direction of 7.3 extending direction of Stiff Block, avoids elastic component 4 inclined under compression or rebound or shock conditions
It moves, leads to the deviation of stress resultant direction and the vertical direction of the first binding face 6.1 of pressure release block 7.2, avoid revealing.
As shown in figs. 4-7, the first mounting base 2 is equipped at least three half slots 2.1.Half slot 2.1 includes groove and tongue,
Tongue and the fitting of 8.4 inner wall of gas storage portion, keep the vertical connection of Stiff Block 7.3 and elastic component 4；8.4 inner wall of groove and gas storage portion
Between form sector channel, increase media discharge amount.By the way that the achievable control to discharge amount of different 2.1 numbers of half slot is arranged
System can select suitable 2.1 numbers of half slot according to the property of medium and the pressure of medium.
As shown in Figure 1 and Figure 2, supporting pad is equipped with above the first mounting base 2, supporting pad is located at the first convex block outside, elastic component
Immediately below 4, supporting pad is ring-type.First mounting base 2 is equipped at least three half slots 2.1, elastic component 4 and the first mounting base 2
Contact area it is small, be unfavorable for the compression to spring, by the way that supporting pad is arranged, 4 lower wall of elastic component is located on supporting element 3, makes bullet
Property part 4 lower wall be entirely supported, increase forced area of the elastic component 4 when being compressed.It is ring-type by setting supporting element 3,
Increase discharge amount on the basis of guaranteeing that supporting element 3 supports elastic component 4 completely.
As shown in Figure 1 and Figure 2, sealing ring 6 is equipped with below the first binding face 6.1, sealing ring 6 is located under the first binding face 6.1
Side.By the way that sealing ring 6 is arranged, so that the gap of the first binding face 6.1 can not be connected to gas storage portion 8.4, to reinforce safety valve
Sealing effect.It is suitable hydrogen material by setting sealing ring 6, avoiding sealing ring 6 that Hydrogen Brittleness Phenomena occurs leads to the sealing effect of sealing ring 6
Fruit reduces, service life shortens.
As shown in Figure 1 and Figure 2, the second mounting base 5 is equipped with below sealing ring 6, the second mounting base 5 is that middle part is convex with second
Block, the second convex block are located at 6 inside of sealing ring.The position restriction of sealing ring 6 is being pushed against block 8.3 and pressure release block by the second mounting base 5
Below 7.2 veneers, avoid revealing.
A kind of pressure releasing method of hydrogen safety valve, includes the following steps:
It pre-tightens, the pre compressed magnitude of elastic component 4 is determined according to set-pressure, it is with fixing piece 1 that elastic component 4 is fixed；Elastic component 4
The elastic force to rebound to two sides is generated by compression, 1 stress of fixing piece generates the movement tendency far from the first binding face 6.1, drives rigid
Property block 7.3 generate the movement tendency far from the first binding face 6.1, drive pressure release block 7.2 to generate and move to the first binding face 6.1
Trend, the abutting power of pretightning force and the abutting application of block 8.3 that pressure release block 7.2 is applied by elastomer block, forces pressure release block 7.2 and supports
Tight block 8.3 fits closely；
Pressure accumulation, pressure medium increase but are less than or equal to set-pressure, and medium is flowed by the first mounting base 2 and supporting pad
Gas storage portion 8.4, generates pressure release block 7.2 and pushes against the consistent medium power in power direction, and the abutting power for being subject to pressure release block 7.2 subtracts
Small, the medium power that pressure release block 7.2 is subject to is less than pretightning force, and pressure release block 7.2 forces pressure release block 7.2 and push against still by power is pushed against
Block 8.3 still keeps fitting closely；
Pressure release, pressure medium are greater than set-pressure, and the medium power that pressure release block 7.2 is subject to is greater than pretightning force, and it is right to push against block 8.3
The abutting power of pressure release block 7.2 is 0, and pressure release block 7.2 and abutting block 8.3 is forced to separate and move to the direction far from the first binding face 6.1
Dynamic, pressure release block 7.2 drives elastic component 4 to be compressed again, and the elastic force that elastic component 4 generates increases, the preload for being subject to pressure release block 7.2
Power increases to equal with medium power, and medium flows to leakage port 8.5 from gas storage portion 8.4 at the first binding face 6.1.
It playbacks, the pressure medium in gas storage portion 8.4 decreases below set-pressure, and the pretightning force that pressure release block 7.2 is subject to is remote
Greater than medium power, the direction where forcing pressure release block 7.2 to the first binding face 6.1 is mobile, and pressure release block 7.2 and abutting block 8.3 are again
It is secondary to fit closely.
Embodiment 2:
A kind of hydrogen-storing device, hydrogen-storing device include the technical solution of any one hydrogen safety valve in above-described embodiment 1.
Embodiment 3:
A kind of fuel-cell vehicle, fuel-cell vehicle include the hydrogen-storing device in above-described embodiment 2.
Although the illustrative specific embodiment of the present invention is described above, in order to the technology of the art
Personnel are it will be appreciated that the present invention, but the present invention is not limited only to the range of specific embodiment, to the common skill of the art
For art personnel, as long as long as various change the attached claims limit and determine spirit and scope of the invention in, one
The innovation and creation using present inventive concept are cut in the column of protection.
Claims (10)
1. a kind of hydrogen safety valve, including
Pressure release block；
Valve body, the valve body are closed hollow structure, are bonded on the inside of the valve body with the pressure release block portion point, the valve body packet
It includes:
Push against block, the abuttings block is the valve body middle part inwardly protruding formation of inner wall, under the abutting block and the pressure release block
Portion fits closely to form the first binding face；
Gas storage portion, the gas storage portion are first binding face side and the hollow cavity that the valve interior wall is formed, the storage
Gas portion is connected to gas source；
Leakage port, the leakage port are first binding face other side and the hollow cavity that the valve interior wall is formed.
2. a kind of hydrogen safety valve according to claim 1, wherein limited block is equipped with above the pressure release block, it is described
Limited block is equipped with opposite side structure, and the opposite side structure includes bonding structure and gap structure.
3. a kind of hydrogen safety valve according to claim 2, wherein the opposite side structure includes arc structure and short side
Structure.
4. a kind of hydrogen safety valve according to claim 2, wherein the abutting block includes the first guide surface, described
First guide surface is located at the abutting block top, and first guide surface is horizontally disposed, the limited block lower wall and described first
Guide surface fits closely to form the second binding face.
5. a kind of hydrogen safety valve according to claim 1, wherein the abutting block further includes the second guide surface, institute
It states the second guide surface and is located at the abutting block lower part, second guide surface and the pressure release block side wall fit closely to form first
Binding face, second guide surface are vertically arranged.
6. a kind of hydrogen safety valve according to claim 1, wherein compression piece is equipped with below the abutting block, it is described
Compression piece includes:
Stiff Block, the Stiff Block and the pressure release block vertically connect；
Elastic component, the elastic component are located in the gas storage portion, and the Stiff Block passes perpendicularly through the elastic component；
Fixing piece, the fixing piece are located at below the elastic component, and the elastic component and the Stiff Block vertically connect.
7. a kind of hydrogen safety valve according to claim 6, wherein be equipped with below the elastic component
First mounting base；
First convex block, first convex block are ring-type, and first convex block is located at the first mounting base middle part, the elastic component
On the outside of inside, the Stiff Block.
8. a kind of hydrogen safety valve according to claim 7, wherein first mounting base is equipped at least three semicircles
Slot.
9. a kind of hydrogen safety valve according to claim 7, wherein supporting pad is equipped with above first mounting base,
The supporting pad is located on the outside of first convex block, immediately below the elastic component, and the supporting pad is ring-type.
10. a kind of hydrogen safety valve according to claim 1, wherein sealing ring is equipped with below first binding face,
The sealing ring is located at below first binding face.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910655302.5A CN110360356A (en) | 2019-07-19 | 2019-07-19 | A kind of hydrogen safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910655302.5A CN110360356A (en) | 2019-07-19 | 2019-07-19 | A kind of hydrogen safety valve |
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| CN110360356A true CN110360356A (en) | 2019-10-22 |
Family
ID=68220842
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| CN201910655302.5A Pending CN110360356A (en) | 2019-07-19 | 2019-07-19 | A kind of hydrogen safety valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111720598A (en) * | 2020-06-30 | 2020-09-29 | 蜂巢能源科技有限公司 | Explosion-proof valve of battery pack and battery pack |
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