CN105927742B - A kind of low-pressure gas pressure reducing valve - Google Patents
A kind of low-pressure gas pressure reducing valve Download PDFInfo
- Publication number
- CN105927742B CN105927742B CN201610534198.0A CN201610534198A CN105927742B CN 105927742 B CN105927742 B CN 105927742B CN 201610534198 A CN201610534198 A CN 201610534198A CN 105927742 B CN105927742 B CN 105927742B
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- Prior art keywords
- spool
- valve
- diaphragm
- valve body
- spring
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Classifications
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- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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- 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
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
- F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
- F16K17/30—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
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- 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/12—Covers for housings
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- 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
- F16K7/00—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves
- F16K7/12—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
The invention discloses a kind of low-pressure gas pressure reducing valves, including valve body, valve deck, spool, spiral shell seat, screw press, compress spring and spring base, spool is vertically arranged in installation cavity, upper chamber is formed between the top of installation cavity and valve deck, diaphragm is provided between the top surface and valve deck of upper chamber, cavity is provided in valve deck, screw press is threadedly coupled with the top of cavity, compression spring is arranged in cavity, lower chambers are provided between the lower end of spool and valve body, middle chamber is provided between the upper end of spool and valve body, spring socket sleeve is on spool, spiral shell seat is arranged between upper chamber and middle chamber, the through hole of connection upper chamber and middle chamber is provided in spiral shell seat, the upper end of spool is resisted against diaphragm downside through through hole.Low-pressure gas pressure reducing valve of the present invention uses structure as diaphragm type, and sealing can carry out decrement, rubber hardness at low pressure seal corresponding design, diaphragm seal uses spherical sealed, and valve repair sealing is avoided to be unable to sealing problem using rubber seal.
Description
Technical field
The present invention relates to a kind of pressure reducing valve more particularly to a kind of low-pressure gas pressure reducing valves.
Background technology
CNG gas pressure reducers it is complicated, automobile accelerate air demand requirement need to set surge chamber greatly, although setting surge chamber,
It is many that CNG fuel vehicle expends fuel in climbing and startup, and it is inadequate also to be easy to cause fuel supplement, because valve itself design structure is determined
Extremely.Brittleness variation is greatly when diaphragm is rubber, ageing of rubber and diaphragm low temperature, acid and alkali-resistance do not depressurizing by force, along with diaphragm
Fine motion is frequent in journey, and it is low that this results in service life；In addition its housing structure is complicated, and maintenance and debugging needs professional equipment.
In new clean energy vehicle field, it is energy saving, reduces the discharge of Automobile emission, proposes new hydrogen combustion
Expect battery car, while the field valve product is required to use pressure height, Hydrogen Energy distance travelled of filling and regular fuel vapour
Quite etc., this results in various performance parameters of raw natural gas automobile using pressure reducing valve and is no longer applicable in vehicle distance travelled.
The content of the invention
The purpose of the present invention is that solve the above-mentioned problems and provides a kind of low-pressure gas pressure reducing valve.
The present invention is achieved through the following technical solutions above-mentioned purpose：
A kind of low-pressure gas pressure reducing valve, including valve body, valve deck, spool, spiral shell seat, screw press, compression spring and spring base,
Installation cavity is provided in the valve body, the spool is vertically arranged in the installation cavity, and the valve deck is mounted on the valve body
Upper end, form upper chamber between the top of the installation cavity and the valve deck, the top surface of the upper chamber and the valve deck it
Between be provided with diaphragm, cavity is provided in the valve deck, the screw press is threadedly coupled with the top of the cavity, the pressure
Contracting spring is arranged in the cavity, it is described compression spring both ends respectively with the upper side of the diaphragm and the screw press
Lower end be fixedly connected, be provided with lower chambers between the lower end of the spool and the valve body, the upper end of the spool with it is described
Middle chamber is provided between valve body, the spring socket sleeve is on the spool, and its both ends is born against in the spool
Upper end and the lower end of the installation cavity, the spiral shell seat are arranged between the upper chamber and the middle chamber and consolidate with the valve body
It is fixed to connect, the through hole for connecting the upper chamber and the middle chamber is provided in the spiral shell seat, the upper end of the spool passes through institute
It states through hole and is resisted against the diaphragm downside, the top of the spool is resisted against the lower end of the through hole of the spiral shell seat, the spool
Middle part is provided with the through hole connected with the lower chambers, is provided with air inlet and gas outlet on the valve body, the air inlet with
The middle chamber connection, the gas outlet is connected with the upper chamber.
Specifically, upper spring seat is provided between the upper end of the compression spring and the lower end of the screw press, it is described
It compresses and lower spring cup is provided between the lower end of spring and the diaphragm, the diaphragm is mounted on the valve by the diaphragm frame
Between body and the valve deck, O-shaped spring washer is provided between the diaphragm and the lower spring cup.
Specifically, gap, lower end and the valve of the spiral shell seat are provided between the upper end of the spiral shell seat and the diaphragm
Sealing ring is provided between the upper end of core, dustband is provided between the lower end of the spring base and the lower chambers.
Further, the pressure reducing valve further includes screw plug, and the gas vent connected with the upper chamber is provided on the valve body,
The screw plug is mounted on the outer end of the gas vent.
Further, be set with locking nut between the outer end of the screw press and the valve deck, the valve deck it is outer
End is provided with installation nut and gasket.
The beneficial effects of the present invention are：
Low-pressure gas pressure reducing valve of the present invention uses structure as diaphragm type, i.e., using depressurize valve outlet pressure variation and bullet
The relations such as the variation of spring force line style, diaphragm compensation control, and sealing, can to decrement, rubber at low pressure seal using rubber seal
Glue hardness carries out corresponding design, and diaphragm seal uses spherical sealed, and valve repair sealing is avoided to be unable to sealing problem.
Description of the drawings
Fig. 1 is a kind of main sectional view of low-pressure gas pressure reducing valve of the present invention；
Fig. 2 is a kind of sectional view of low-pressure gas pressure reducing valve of the present invention.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings：
As depicted in figs. 1 and 2, a kind of low-pressure gas pressure reducing valve of the present invention, including valve body 18, valve deck 20, spool 12, spiral shell seat
7th, screw press 1, screw plug 10, compression spring 5 and spring base 11 are provided with installation cavity in valve body 18, and spool 12 is vertically arranged in
In installation cavity, valve deck 20 is mounted on the upper end of valve body 18, and upper chamber 13, upper chamber are formed between the top of installation cavity and valve deck 20
Diaphragm 19 is provided between 13 top surface and valve deck 20, cavity, the top screw thread of screw press 1 and cavity are provided in valve deck 20
Connection, compression spring 5 be arranged in cavity, compress spring 5 both ends respectively under the upper side of diaphragm 19 and screw press 1
End is fixedly connected, and lower chambers 16 are provided between the lower end of spool 12 and valve body 18, are set between the upper end of spool 12 and valve body 18
Middle chamber 14 is equipped with, spring base 11 is sleeved on spool 12, and its both ends is born against in the upper end of spool 12 and installation cavity
Lower end, spiral shell seat 7 are arranged between upper chamber 13 and middle chamber 14 and are fixedly connected with valve body 18, be provided in spiral shell seat 7 in connection
The through hole of chamber 13 and middle chamber 14, the upper end of spool 12 are resisted against 19 downside of diaphragm through through hole, and the top of spool 12 is supported
The lower end of the through hole of spiral shell seat 7 is leaned against, 12 middle part of spool is provided with the through hole connected with lower chambers 16, air inlet is provided on valve body 18
Mouthfuls 15 and gas outlet 17, air inlet 15 connected with middle chamber 14, gas outlet 17 is connected with upper chamber 13, be provided on valve body 18 and
The gas vent that upper chamber 13 connects, screw plug 10 are mounted on the outer end of gas vent.
It compresses and upper spring seat 23 is provided between the upper end of spring 5 and the lower end of screw press 1, compress the lower end of spring 5
Lower spring cup 21 is provided between diaphragm 19, diaphragm 19 is mounted on by diaphragm frame 22 between valve body 18 and valve deck 20, diaphragm
O-shaped spring washer 6 is provided between 19 and lower spring cup 21, is provided with gap between the upper end of spiral shell seat 7 and diaphragm 19, under spiral shell seat 7
Sealing ring 8 is provided between end and the upper end of spool 12, dustband 9 is provided between the lower end of spring base 11 and lower chambers 16,
Locking nut 2 is set between the outer end of screw press 1 and valve deck 20, the outer end of valve deck 20 is provided with installation nut 3 and gasket
4。
A kind of operation principle of low-pressure gas pressure reducing valve of the present invention is as follows：
Spool 12 and the conical surface of sealing ring 8 is allowed to maintain a gap always after pressure is adjusted, under the action of spring force.
Gas passes through air inlet 15, by the inclined hole between air inlet 15 and middle chamber 14, into spool 12 at middle chamber 14, quickly into
Enter 8 conical surface gap of spool 12 and sealing ring, be flowed into upper chamber 13；At the same time, entered further through the through hole on spool 12
Lower chambers 16, at this moment, gas are acted in 13 pressure of upper chamber on diaphragm 19 and compression spring 5, and gas is acted in lower chambers 16
Under the action of the frictional force on spool 12, between 12 body of spool and lumen, make the pressure balance of the upper chamber 13 of pressure reducing valve
Stablize.Meet the stabilization of outlet pressure.That is the variation of inlet pressure cannot influence the variation of outlet pressure.It is mounted on
The outlet pressure variation of high-pressure pressure-reducing valve in Hydrogen Fuel-cell Vehicles, does not influence to depressurize the variation of valve outlet pressure, keeps upper chamber
13 pressure are constant.So as to ensure that decompression valve outlet pressure is basicly stable.In order to ensure the stability of valve, increase in the lower part of spool 12
Add dustband 9, and spiracle is provided on valve deck 20.
Technical scheme is not limited to the limitation of above-mentioned specific embodiment, and every technique according to the invention scheme is done
The technology deformation gone out, each falls within protection scope of the present invention.
Claims (5)
1. a kind of low-pressure gas pressure reducing valve, it is characterised in that：Including valve body, valve deck, spool, spiral shell seat, screw press, compression spring
And spring base, installation cavity is provided in the valve body, and the spool is vertically arranged in the installation cavity, and the valve deck is mounted on
The upper end of the valve body forms upper chamber, the top surface of the upper chamber and institute between the top of the installation cavity and the valve deck
It states and is provided with diaphragm between valve deck, cavity is provided in the valve deck, the top screw thread of the screw press and the cavity connects
Connect, it is described compression spring be arranged in the cavity, it is described compression spring both ends respectively with the upper side of the diaphragm and institute
The lower end for stating screw press is fixedly connected, and lower chambers are provided between the lower end of the spool and the valve body, the spool
Middle chamber is provided between upper end and the valve body, the spring socket sleeve is on the spool, and its both ends is born against
The lower end of the upper end of the spool and the installation cavity, the spiral shell seat be arranged between the upper chamber and the middle chamber and with
The valve body is fixedly connected, and the through hole for connecting the upper chamber and the middle chamber is provided in the spiral shell seat, the spool
Upper end is resisted against the diaphragm downside through the through hole, and the top of the spool is resisted against under the through hole of the spiral shell seat
End, the spool middle part are provided with the through hole connected with the lower chambers, air inlet and gas outlet, institute are provided on the valve body
It states air inlet to connect with the middle chamber, the gas outlet is connected with the upper chamber.
2. a kind of low-pressure gas pressure reducing valve according to claim 1, it is characterised in that：The upper end of the compression spring and institute
It states and upper spring seat is provided between the lower end of screw press, lower bullet is provided between the lower end of the compression spring and the diaphragm
Spring abutment, the diaphragm are mounted on by the diaphragm frame between the valve body and the valve deck, the diaphragm and the lower spring
O-shaped spring washer is provided between seat.
3. a kind of low-pressure gas pressure reducing valve according to claim 1, it is characterised in that：The upper end of the spiral shell seat and the film
Gap is provided between piece, sealing ring is provided between the lower end of the spiral shell seat and the upper end of the spool, the spring base
Dustband is provided between lower end and the lower chambers.
4. a kind of low-pressure gas pressure reducing valve according to claim 1, it is characterised in that：Screw plug is further included, on the valve body
The gas vent connected with the upper chamber is provided with, the screw plug is mounted on the outer end of the gas vent.
5. a kind of low-pressure gas pressure reducing valve according to claim 1, it is characterised in that：The outer end of the screw press and institute
It states and locking nut is set between valve deck, the outer end of the valve deck is provided with installation nut and gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610534198.0A CN105927742B (en) | 2016-07-08 | 2016-07-08 | A kind of low-pressure gas pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610534198.0A CN105927742B (en) | 2016-07-08 | 2016-07-08 | A kind of low-pressure gas pressure reducing valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105927742A CN105927742A (en) | 2016-09-07 |
| CN105927742B true CN105927742B (en) | 2018-05-18 |
Family
ID=56827861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610534198.0A Active CN105927742B (en) | 2016-07-08 | 2016-07-08 | A kind of low-pressure gas pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105927742B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111140667B (en) * | 2018-11-05 | 2024-05-24 | 上海气立可气动设备有限公司 | Two-section type air inlet and two-section type air exhaust structure of electric control proportional valve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1818455A (en) * | 2005-12-29 | 2006-08-16 | 周继光 | Air pressure reducer |
| CN203297704U (en) * | 2012-12-31 | 2013-11-20 | 宁波市华益气动工程有限公司 | Reducing valve used for air feeding system of natural gas driven automobile |
| CN203868441U (en) * | 2014-03-05 | 2014-10-08 | 浙江元曜阀业有限公司 | Corrugated pipe pressure-relief valve |
| CN205278479U (en) * | 2015-11-20 | 2016-06-01 | 重庆山能仪表有限公司 | Formula of relying on oneself fuel pressure regulation valve |
| CN105673900A (en) * | 2016-02-23 | 2016-06-15 | 上海井和海船用阀门有限公司 | Air reducing valve used for ships |
| CN205780945U (en) * | 2016-07-08 | 2016-12-07 | 成都航天烽火精密机电有限公司 | A kind of low-pressure gas air relief valve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9074703B2 (en) * | 2008-10-28 | 2015-07-07 | GM Global Technology Operations LLC | Pressure regulator for hydrogen storage system |
-
2016
- 2016-07-08 CN CN201610534198.0A patent/CN105927742B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1818455A (en) * | 2005-12-29 | 2006-08-16 | 周继光 | Air pressure reducer |
| CN203297704U (en) * | 2012-12-31 | 2013-11-20 | 宁波市华益气动工程有限公司 | Reducing valve used for air feeding system of natural gas driven automobile |
| CN203868441U (en) * | 2014-03-05 | 2014-10-08 | 浙江元曜阀业有限公司 | Corrugated pipe pressure-relief valve |
| CN205278479U (en) * | 2015-11-20 | 2016-06-01 | 重庆山能仪表有限公司 | Formula of relying on oneself fuel pressure regulation valve |
| CN105673900A (en) * | 2016-02-23 | 2016-06-15 | 上海井和海船用阀门有限公司 | Air reducing valve used for ships |
| CN205780945U (en) * | 2016-07-08 | 2016-12-07 | 成都航天烽火精密机电有限公司 | A kind of low-pressure gas air relief valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105927742A (en) | 2016-09-07 |
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