CN206708472U - A kind of high pressure hydrogen pressure-reducing valve - Google Patents
A kind of high pressure hydrogen pressure-reducing valve Download PDFInfo
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- CN206708472U CN206708472U CN201720429482.1U CN201720429482U CN206708472U CN 206708472 U CN206708472 U CN 206708472U CN 201720429482 U CN201720429482 U CN 201720429482U CN 206708472 U CN206708472 U CN 206708472U
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- cavity
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- reducing valve
- flap
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Abstract
A kind of high pressure hydrogen pressure-reducing valve has been the utility model is related to, has mainly solved the problems, such as that the one-level decompression present in prior art to hydrogen-storing device is difficult to reach fuel cell pressure.The utility model is by using a kind of high pressure hydrogen pressure-reducing valve, valve body and bonnet including interconnection, the valve body forms cavity one with the bonnet, spring is provided with the cavity one, spring base positioned at spring top and the piston seat positioned at spring bottom, the groove for installing flap is offered on the valve body of the bottom of cavity one, cavity two is offered below the flap, the technical scheme that valve element is located in the cavity two and contacted simultaneously with the piston seat bottom through the flap, preferably solves the problem, depressurized available for high pressure hydrogen.
Description
Technical field
It the utility model is related to a kind of high pressure hydrogen pressure-reducing valve.
Background technology
The power of automobile generally uses fuel oil at present, and because petroleum resources are limited, people have to seek new replacement energy
Source, such as electric energy, solar energy etc..As the substitute of vehicle fuel, including known liquefied petroleum gas and liquefied natural gas.
Pernicious gas using the motor vehicle emission of these substitutes is relatively fewer, but still fails to fundamentally solve the energy and pollution
The problem of, at present, hydrogen is to store the energy that is most abundant and most cleaning in the world, is the optimum fuel of fuel cell, as vapour
A kind of new energy in turner industry because its aboundresources, high-efficiency environment friendly by various countries attention and greatly develop.Fuel cell etc.
Element pressure-bearing is relatively low, and hydrogen-storing device pressure is of a relatively high, and pipeline can be caused longer for second depressurized and increase vehicle load, increase
Cost.
Utility model content
Technical problem to be solved in the utility model is to depressurize hardly possible to the one-level of hydrogen-storing device present in prior art
The problem of to reach fuel cell pressure, it is proposed that a kind of new high pressure hydrogen pressure-reducing valve, the high pressure hydrogen have with pressure-reducing valve
Have and realize that the one-level decompression to hydrogen-storing device can reach fuel cell pressure, and simplify, lightweight onboard system, with filtering
Effect, the characteristics of service life is high.
It is as follows to solve above-mentioned technical problem the technical solution adopted in the utility model：A kind of high pressure hydrogen pressure-reducing valve,
Valve body and bonnet including interconnection, the valve body form cavity one with the bonnet, spring, position are provided with the cavity one
Spring base in spring top and the piston seat positioned at spring bottom, offer and be used on the valve body of the bottom of cavity one
The groove of flap is installed, cavity two is offered below the flap, valve element is located in the cavity two and passes through the valve
Valve contacts with the piston seat bottom simultaneously.
Preferably, the valve core upper sleeve is provided with back-moving spring and packing ring two, packing ring below the back-moving spring
One and O-ring one.
Preferably, the side of cavity two is connected to air inlet port, and screen pack, the mistake are laid with the air inlet port
Fixed between filter screen surrounding and the side wall of the air inlet by packing ring three and retaining ring sealing.
Preferably, two another side lower part of cavity connection air outlet, the air outlet simultaneously with the cavity one
Connection.
Preferably, the flap bottom is provided with sealing gasket.
Preferably, O-ring two is arranged with the piston seat.
It is preferably located at the adjusting screw being provided with the top of the bonnet with the spring base top contact, the bonnet top
Portion is additionally provided with coordinates fixed nut with the adjusting screw.
The valve body for being preferably located at the side of cavity one is provided with floss hole.
Preferably, the piston seat bottom is recessed.
Pressure-reducing valve of the present utility model can bear at least 35MPa pressure and be decompressed to 0.1Mpa~3Mpa, pass through setting
Floss hole can discharge superpressure pressure when O-ring two fails by floss hole；
In the utility model, sealing gasket and valve element linear sealing, both materials are different, good seal performance, and the life-span is high；
In the utility model, after adjusting screw pressure setting, locking nut, pressure change is prevented；
In the utility model, screen pack is installed in the air inlet port of valve body, prevents impurity from entering in valve body, improves reliability
And service life；
In the utility model, air outlet is connected to the bottom of cavity two, the pressure of gas after valve can be passed through into cavity two
Bottom sends valve element to and then sends piston cap and spring to, so as to can more improve pressure when setting the decrement of spring
The sensitivity of regulation.
Brief description of the drawings
Fig. 1 is a kind of sectional view of high pressure hydrogen pressure-reducing valve of the utility model；
In accompanying drawing：
1st, valve body 2, packing ring 1, O-ring one
4th, packing ring 25, back-moving spring 6, sealing gasket
7th, flap 8, piston seat 9, spring
10th, bonnet 11, nut 12, adjusting screw
13rd, spring base 14, O-ring 2 15, valve element
16th, screen pack 17, packing ring 3 18, back-up ring
19th, air inlet port 20, air outlet 21, floss hole
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, with reference to embodiments, to this
Utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining this practicality
It is new, it is not used to limit the utility model.
【Embodiment 1】
A kind of high pressure hydrogen pressure-reducing valve, include the valve body 1 and bonnet 10 of interconnection, the valve body 1 and the bonnet
10 are connected using spiral so as to form cavity one, in the cavity one provided with spring 9, positioned at the top of spring 9 spring base 13 with
And the piston seat 8 positioned at the bottom of spring 9, the annular for placing spring 9 is all provided with the spring base 13 and the piston seat 8
Groove, it is firm to ensure that spring 9 is placed；
The groove for installing flap 7 is offered on the valve body 1 of the bottom of cavity one, the bottom of flap 7 is provided with
Sealing gasket 6, cavity two is offered positioned at the lower section of flap 7, valve element 15 is located in the cavity two and same through the flap 7
When contacted with the bottom of piston seat 8, the bottom of piston seat 8 is recessed, be arranged with the valve element 15 back-moving spring 5 with
And packing ring 24, packing ring 1 and O-ring 1 positioned at the lower section of the back-moving spring 5, valve element 15 include through flap 7 simultaneously with
The top of the bottom of piston seat 8 contact, the middle part for blocking flap 7 can be contacted with the sealing gasket 6 and is cased with successively
Back-moving spring 5, packing ring 24, the bottom of packing ring 1 and O-ring 1；Top is preferably thinner bar shape, and middle part is preferably to justify
Mesa-shaped, bottom are preferably thicker bar shape, and back-moving spring 5 can make the resilient movement of valve element 15 by autogenous shrinkage and extension,
The effect for closing pressure-reducing valve is played in the sealing gasket 6 of the bottom of flap 7 and the middle part of valve element 15 when contacting；
The side of cavity two is connected to air inlet port 19, is laid with screen pack 16 in the air inlet port 19, passed through
The port 19 in the recent period is divided and is less than outside for inner side air inlet port and outside air inlet port, the inner side air inlet port by filter screen 16
Sealed between the side wall of air inlet port, the surrounding of screen pack 16 and the outside air inlet port by packing ring 3 17 and back-up ring 18
Fixed, two another side lower part of cavity connects air outlet 20, and the air outlet 20 connects with the cavity one simultaneously, even
Logical is opened in the side wall of the bottom of cavity one；
Further, the gas outlet of the inner side air inlet port is opened in packing ring 24, packing ring 1 and the top of O-ring 1
Cavity two side wall on；The air inlet of two another side lower part of cavity connection air outlet 20 is opened in packing ring 24, packing ring
1 and the lower section of O-ring 1 cavity two side wall on；By packing ring 24, packing ring 1 and O-ring 1 by the and of air inlet port 19
Air outlet 20 seals isolation and got up；
O-ring 2 14 is arranged with the piston seat 8, so that being boundary line by top and the bottom cavity with O-ring 2 14
One is sealed, and the adjusting screw 12 with the top contact of spring base 13, the bonnet are provided with positioned at the top of bonnet 10
10 tops are additionally provided with the nut 11 for coordinating fixation with the adjusting screw 12, on the valve body 1 of the side of cavity one
Provided with floss hole 21.
Operation principle：Air inlet port 19 is connected with hydrogen cylinder, air outlet 20 is connected with using equipment, in use,
Hydrogen cylinder valve is opened, then rotates clockwise adjusting screw 12, adjusting screw 12 pushes spring base 13, spring 9 and piston seat
8 so that spring 9 compresses downwards, set by the decrement of spring 9 after high pressure air reducing needed for pressure value, while piston
Seat 8 pulls down valve element 15 so that valve element 15 is moved down under the compression of back-moving spring 5 so as to not contacted with flap 7, so as to beat
Reduce pressure valve；
High pressure hydrogen enters into and through the filtering of screen pack 16 from air inlet port 19 and entered in cavity two, passes through cavity two and chamber
The stop of flap 7 between body one so that the pressure of high pressure hydrogen is decayed, and the hydrogen after decay is then passed through flap 7 and entered
In the cavity one of the bottom of piston seat 8, then the entrance air outlet 20 of cavity one by the bottom of piston seat 8, enter from air outlet 20
Use (gas flowing path refers to Fig. 1) in equipment；
When the gas pressure change after valve is big, the piston seat 8 can be promoted to move upwardly so that spring 9 compresses upwards, made
The spring force up and down that must be acted on spring 9 produces counteracting, because piston seat 8 moves up so that is touched with the bottom connection of piston seat 8
Valve element 15 moves up under the tension force of back-moving spring 5 so that the open degree of flap 7 diminishes, and the flow resistance of gas becomes big so that gas
Body pressure diminishes；When the gas pressure change after valve is small, piston seat 8 can move down and press against valve element 15 and move down again, make
The open degree for obtaining flap 7 becomes big, and the flow resistance of gas diminishes so that gas pressure becomes big, goes round and begins again, reaches gas after venting valve
The purpose of pressure, when downstream pressure is equal to the pressure that initial regulation spring 12 is set, pressure-reducing valve is closed.
In addition to the implementation, the utility model can also have other embodiment.It is all to use equivalent substitution or equivalent change
The technical scheme to be formed is changed, all falls within the protection domain of the requires of the utility model.
Claims (9)
1. a kind of high pressure hydrogen pressure-reducing valve, include the valve body (1) and bonnet (10) of interconnection, it is characterised in that the valve
Body (1) forms cavity one with the bonnet (10), and spring (9), the spring base at the top of spring (9) are provided with the cavity one
(13) and the piston seat (8) positioned at spring (9) bottom, offered on the valve body (1) of the bottom of cavity one for installing
The groove of flap (7), offers cavity two below the flap (7), and valve element (15) is located in the cavity two and passed through
The flap (7) while contacted with the piston seat (8) bottom.
2. a kind of high pressure hydrogen pressure-reducing valve according to claim 1, it is characterised in that be arranged with the valve element (15)
Back-moving spring (5) and packing ring two (4), packing ring one (2) and 0 type circle one (3) below the back-moving spring (5).
3. a kind of high pressure hydrogen pressure-reducing valve according to claim 1, it is characterised in that the side of cavity two is connected to
Air inlet port (19), the air inlet port (19) is interior to be laid with screen pack (16), screen pack (16) surrounding and the air inlet
Pass through packing ring three (17) between the side wall of mouth and back-up ring (18) sealing is fixed.
A kind of 4. high pressure hydrogen pressure-reducing valve according to claim 1, it is characterised in that two another side lower part of cavity
Air outlet (20) is connected, the air outlet (20) while is connected with the cavity one.
5. a kind of high pressure hydrogen pressure-reducing valve according to claim 1, it is characterised in that flap (7) bottom is provided with
Sealing gasket (6).
6. a kind of high pressure hydrogen pressure-reducing valve according to claim 1, it is characterised in that be arranged on the piston seat (8)
There is O-ring two (14).
7. a kind of high pressure hydrogen pressure-reducing valve according to claim 1, it is characterised in that at the top of the bonnet (10)
Provided with the adjusting screw (12) with the spring base (13) top contact, it is additionally provided with and the regulation spiral shell at the top of the bonnet (10)
Follow closely (12) and coordinate fixed nut (11).
8. a kind of high pressure hydrogen pressure-reducing valve according to claim 1, it is characterised in that positioned at the side of cavity one
The valve body (1) is provided with floss hole (21).
9. a kind of high pressure hydrogen pressure-reducing valve according to claim 1, it is characterised in that piston seat (8) bottom is in
Recess.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720429482.1U CN206708472U (en) | 2017-04-21 | 2017-04-21 | A kind of high pressure hydrogen pressure-reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720429482.1U CN206708472U (en) | 2017-04-21 | 2017-04-21 | A kind of high pressure hydrogen pressure-reducing valve |
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| Publication Number | Publication Date |
|---|---|
| CN206708472U true CN206708472U (en) | 2017-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720429482.1U Active CN206708472U (en) | 2017-04-21 | 2017-04-21 | A kind of high pressure hydrogen pressure-reducing valve |
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| Country | Link |
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| CN (1) | CN206708472U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360356A (en) * | 2019-07-19 | 2019-10-22 | 张家港富瑞阀门有限公司 | A kind of hydrogen safety valve |
| CN111306337A (en) * | 2020-03-04 | 2020-06-19 | 苏州苏氢制氢设备有限公司 | Hydrogen differential pressure regulating valve of hydrogen production machine |
| CN113790295A (en) * | 2021-09-10 | 2021-12-14 | 张家港富瑞阀门有限公司 | Pressure reducing valve and pressure reducing method for liquid hydrogen |
-
2017
- 2017-04-21 CN CN201720429482.1U patent/CN206708472U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360356A (en) * | 2019-07-19 | 2019-10-22 | 张家港富瑞阀门有限公司 | A kind of hydrogen safety valve |
| CN111306337A (en) * | 2020-03-04 | 2020-06-19 | 苏州苏氢制氢设备有限公司 | Hydrogen differential pressure regulating valve of hydrogen production machine |
| CN113790295A (en) * | 2021-09-10 | 2021-12-14 | 张家港富瑞阀门有限公司 | Pressure reducing valve and pressure reducing method for liquid hydrogen |
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