CN107763269A - A kind of decompression main valve of convenient control gas outlet pressure - Google Patents
A kind of decompression main valve of convenient control gas outlet pressure Download PDFInfo
- Publication number
- CN107763269A CN107763269A CN201610678915.7A CN201610678915A CN107763269A CN 107763269 A CN107763269 A CN 107763269A CN 201610678915 A CN201610678915 A CN 201610678915A CN 107763269 A CN107763269 A CN 107763269A
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- CN
- China
- Prior art keywords
- valve
- valve element
- outlet pressure
- additionally provided
- diaphragm
- 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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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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses a kind of decompression main valve of convenient control gas outlet pressure, including valve body, air admission hole and venthole are provided with the valve body, air admission hole is connected with venthole by relief portion, and the relief portion includes the second valve element and valve seat, and guide plate is additionally provided with the valve body, a plunger shaft is formed between piston portion and valve body, it is additionally provided with second valve element and presses runner, second spring is additionally provided with plunger shaft, outlet pressure trimming part is additionally provided with valve body；The outlet pressure trimming part includes primary diaphragm and secondary diaphragm, and fine setting valve seat is additionally provided between primary diaphragm and secondary diaphragm, and fine setting valve seat includes fine tuning seat and the first valve element, the first spring is additionally provided between the first valve element and valve body.The present invention is simple in construction, outlet pressure accuracy is high, has pressure autostability energy.
Description
Technical field
The present invention relates to compressed gas decompressor field, more particularly to a kind of convenient drop for controlling gas outlet pressure
Press main valve.
Background technology
As natural gas is with more and more extensive, various forms of pressure-reducing valves emerge in an endless stream, to natural gas depressurization valve arrangement
Further optimization will further promote natural gas utilization.By taking environmental consciousness as an example, natural gas is used for the combustion of vehicle motor
Material can greatly reduce Vehicular exhaust pollution, but in order to improve the single aeration stroke using natural gas as the vehicle of fuel, on vehicle
Gas cylinder is provided with to be used to house natural gas, and the gas pressure for being finally introducing cylinder is generally several kPas,
So, the pressure-reducing valve depressurized to high-pressure natural gas is particularly important, while in practice, above decompression valve performance
Stability be also intuitively reacted on the power of vehicle even in traffic safety.
The pressure inside the tank of gas cylinder can reach 20Mpa or higher in the prior art, and high pressure air relief valve is a kind of
For the pressure control device in high-pressure gas pipeline system, its output valve directly influences the running status of follow-up equipment, existing
It is mainly diaphragm type and piston type to have technology mesohigh gas decompression valve arrangement.No matter which kind of structure pressure-reducing valve, due to step-down ratio
Greatly, and diaphragm or spring that two kinds of forms decompression performances are provided with have a great influence, and the presbyopic of diaphragm, spring machining accuracy
And yield deformation, both in use mechanical property change poor controllability, so so that traditional high pressure air reducing
The range of regulation of valve is small, regulation precision is low, stability in use is poor.
The content of the invention
The diaphragm or spring being provided with for above-mentioned existing decompression performance have a great influence, and the presbyopic of diaphragm, bullet
Spring machining accuracy and yield deformation, both in use mechanical property change poor controllability, so so that traditional height
The problem of range of regulation of gas pressure reducer is small, regulation precision is low, stability in use is poor is pressed, the invention provides the convenient control of one kind
The decompression main valve of gas outlet pressure processed.
To solve the above problems, a kind of decompression main valve of convenient control gas outlet pressure provided by the invention pass through it is following
Technical essential solves problem：A kind of convenience controls the decompression main valve of gas outlet pressure, including valve body, is set on the valve body
There are air admission hole and venthole, air admission hole is connected with venthole by relief portion, and the relief portion includes the second valve element and is arranged on
Valve seat on valve body, guide plate is additionally provided with the valve body, pilot hole, the second valve element bag are provided with the guide plate
Include and be oriented to bar portion, decompression conical section and piston portion, the guiding bar portion coordinates with being oriented to interporal lacuna, and decompression conical section is arranged on valve
In seat, a plunger shaft is formed between piston portion and valve body, the equal of connection venthole and plunger shaft is additionally provided with the second valve element
Press runner, the second spring that stress is played for applying to piston portion be additionally provided with plunger shaft, be additionally provided with valve body for
Second valve element applies the outlet pressure trimming part of compression；
The outlet pressure trimming part includes primary diaphragm and secondary diaphragm, and the primary diaphragm and secondary diaphragm are respectively positioned on second
Valve element sets the side for being oriented to bar portion, and plane residing for primary diaphragm and secondary diaphragm and the motion of the second valve element under free state
Direction is vertical, is additionally provided with fine setting valve seat between primary diaphragm and secondary diaphragm, and the front end of the fine setting valve seat is and air admission hole
The lumen communicated, finely tune the rear end of valve seat and epicoele is surrounded by primary diaphragm and secondary diaphragm, fine setting valve seat includes fine tuning seat and the
One valve element, the first spring for realizing fine setting valve base sealing, primary diaphragm and the are additionally provided between the first valve element and valve body
One valve element contacts, and secondary diaphragm is in contact with the second valve element.
Specifically, the relief portion set is used for the circulation passage for forming air admission hole and venthole, and by adjusting the second valve
Gap between core and valve seat reaches the purpose of decompression, and the adjustment in above gap by secondary diaphragm to being oriented on the second valve element
The compression of bar portion end is realized：In the present invention, lumen is applied due to being communicated with air admission hole in primary diaphragm to the first valve element
Pressurize stress when, circulation passage is formed between fine tuning seat and the first valve element, so, internal pressure increases in epicoele, secondary diaphragm with
The braking to the second valve element is realized in pressure in upper；The first spring and second spring set, which is respectively used to apply, realizes that the present invention exists
Relief portion and the compression blocked of fine setting valve seat under dead status.In above structure, because primary diaphragm and secondary diaphragm are equal
Flexible, so, when internal pressure changes in epicoele, primary diaphragm and secondary diaphragm can be adapted to by elastic deformation
The change of intracavitary pressure, so, it is easy to realize the control to the second spool position by the fine setting to internal pressure in epicoele so that this hair
It is bright that there is the output of accurate outlet pressure.
The adjustment for pressing runner to be used for the internal pressure into plunger shaft set, and in the internal pressure and venthole in above plunger shaft
Compression it is directly proportional, while the internal pressure in plunger shaft and secondary diaphragm form reaction force to the compression of the second valve element, this
Sample, in venthole after pressure rise, the end force of piston portion forces an end motion of second valve element towards secondary diaphragm, can
So that the gap between valve seat and decompression conical section diminishes, so that decompression main valve provided by the invention has pressure self-stabilization
Performance.
Further technical scheme is：
To enable the first valve element and the second valve element easy motion, response accuracy and response speed are adjusted beneficial to the pressure of the present invention
The bearing shell coordinated respectively with the second valve element and the first valve element is provided with degree, the relief portion and fine setting valve seat.Due to existing
Canister or metallic conduit can be touched during fuel gas transmission unavoidably, the preferred material of the bearing shell is bearing metal, this
Sample, when having impurity in combustion gas, preferable bearing shell has good wearability.
For ease of improving relief portion and finely tuning the flow rate controllability of valve seat, the sealing surface in the relief portion and fine setting valve seat
It is conical seal (contact) face.
To enable the deformation of secondary diaphragm mutually to be responded with outlet pressure, the pressure of the present invention is improved from constant ability,
Side of the secondary diaphragm away from primary diaphragm communicates with venthole.
Further to improve the controllability of output pressure of the present invention, the side of the plunger shaft is additionally provided with escape orifice, institute
Escape orifice is stated to the negotiability of medium more than negotiability of the runner to medium is pressed, above escape orifice is used to adjust plunger shaft
In pressure.
Further to improve the controllability of output pressure of the present invention, the air pressure in the epicoele is adjustable.
The invention has the advantages that：
1st, the present invention is simple in construction, and processing and manufacturing is easy, and the relief portion of setting is used to form air admission hole and the circulation of venthole is led to
Road, and reach by adjusting the gap between the second valve element and valve seat the purpose of decompression, and the adjustment in above gap passes through second
Diaphragm is realized to the compression that bar portion end is oriented on the second valve element：In the present invention, lumen due to being communicated with air admission hole,
When primary diaphragm applies compression to the first valve element, circulation passage is formed between fine tuning seat and the first valve element, it is so, interior in epicoele
Pressure increases, secondary diaphragm more than in pressure realize braking to the second valve element；The first spring and the second spring difference set
The present invention relief portion and compression blocked of fine setting valve seat under dead status are realized for applying.In above structure, due to
Primary diaphragm and secondary diaphragm are respectively provided with elasticity, and so, when internal pressure changes in epicoele, primary diaphragm and secondary diaphragm can be with
The change of epicoele internal pressure is adapted to by elastic deformation, so, is easy to realize to the second valve by the fine setting to internal pressure in epicoele
The control of core position so that the present invention has the output of accurate outlet pressure.
2nd, the adjustment for pressing runner to be used for the internal pressure into plunger shaft set, and internal pressure and venthole in above plunger shaft
In compression it is directly proportional, while the internal pressure in plunger shaft and secondary diaphragm form reaction force to the compression of the second valve element,
So, in venthole after pressure rise, the end force of piston portion forces an end motion of second valve element towards secondary diaphragm,
It may be such that valve seat and the gap depressurized between conical section diminish, so that decompression main valve provided by the invention has pressure from steady
Qualitative energy.
Brief description of the drawings
Fig. 1 is a kind of knot of decompression one specific embodiment of main valve of convenient control gas outlet pressure of the present invention
Structure schematic diagram.
Scheming acceptance of the bid note is respectively：1st, valve body, 2, air admission hole, 3, piston portion, the 4, first spring, 5, fine tuning seat, the 6, first film
Piece, the 7, first valve element, 8, secondary diaphragm, 9, guide plate, the 10, second valve element, 11, venthole, 12, press runner, the 13, second bullet
Spring, 14, bearing shell, 15, escape orifice, 111, epicoele, 112, lumen.
Embodiment
With reference to embodiment, the present invention is described in further detail, but the present invention structure be not limited only to it is following
Embodiment：
Embodiment 1：
As shown in figure 1, a kind of convenience controls the decompression main valve of gas outlet pressure, including valve body 1, it is provided with the valve body 1
Air admission hole 2 and venthole 11, air admission hole 2 are connected with venthole 11 by relief portion, and the relief portion includes the He of the second valve element 10
The valve seat being arranged on valve body 1, guide plate 9 is additionally provided with the valve body 1, pilot hole is provided with the guide plate 9, it is described
Second valve element 10 includes being oriented to bar portion, decompression conical section and piston portion 3, and the guiding bar portion coordinates with being oriented to interporal lacuna, decompression
Conical section is arranged in valve seat, and a plunger shaft is formed between piston portion 3 and valve body 1, connection is additionally provided with the second valve element 10
The pressure runner 12 of venthole 11 and plunger shaft, the second bullet that stress is played for applying to piston portion 3 is additionally provided with plunger shaft
Spring 13, the outlet pressure trimming part for applying compression to the second valve element 10 is additionally provided with valve body 1；
The outlet pressure trimming part includes primary diaphragm 6 and secondary diaphragm 8, and the primary diaphragm 6 and secondary diaphragm 8 are respectively positioned on
Second valve element 10 sets the side for being oriented to bar portion, and plane residing for primary diaphragm 6 and secondary diaphragm 8 and the second valve under free state
The direction of motion of core 10 is vertical, is additionally provided with fine setting valve seat between primary diaphragm 6 and secondary diaphragm 8, before the fine setting valve seat
The lumen 112 for holding to communicate with air admission hole 2, the rear end for finely tuning valve seat surrounds epicoele 111 by primary diaphragm 6 and secondary diaphragm 8, micro-
Adjust valve seat to include the valve element 7 of fine tuning seat 5 and first, be additionally provided between the first valve element 7 and valve body 1 for realizing fine setting valve base sealing
The first spring 4, primary diaphragm 6 contacts with the first valve element 7, and secondary diaphragm 8 is in contact with the second valve element 10.
In the present embodiment, the relief portion of setting is used for the circulation passage for forming air admission hole 2 and venthole 11, and passes through adjustment
Gap between second valve element 10 and valve seat reaches the purpose of decompression, and the adjustment in above gap by secondary diaphragm 8 to second
The compression for being oriented to bar portion end on valve element 10 is realized：In the present invention, lumen 112 with air admission hole 2 due to communicating, first
When diaphragm 6 applies compression to the first valve element 7, circulation passage is formed between the valve element 7 of fine tuning seat 5 and first, so, epicoele 111
Middle internal pressure increases, secondary diaphragm 8 more than in pressure realize braking to the second valve element 10；The first spring 4 and second set
Spring 13, which is respectively used to apply, realizes the present invention relief portion and compression blocked of fine setting valve seat under dead status.Tie above
In structure, because primary diaphragm 6 and secondary diaphragm 8 are respectively provided with elasticity, so, and when internal pressure changes in epicoele 111, primary diaphragm 6
The change of the internal pressure of epicoele 111 can be adapted to by elastic deformation with secondary diaphragm 8, so, is easy to by epicoele 111
The control to the position of the second valve element 10 is realized in the fine setting of internal pressure so that the present invention has the output of accurate outlet pressure.
The adjustment for pressing runner 12 to be used for the internal pressure into plunger shaft set, and internal pressure and venthole in above plunger shaft
Compression in 11 is directly proportional, while the internal pressure in plunger shaft forms anti-work with secondary diaphragm 8 to the compression of the second valve element 10
Firmly, so, in venthole 11 after pressure rise, the end force of piston portion 3 forces the second valve element 10 towards secondary diaphragm 8
An end motion, may be such that valve seat and depressurize conical section between gap diminish so that decompression main valve provided by the invention
With pressure autostability energy.
Embodiment 2：
The present embodiment is further qualified on the basis of embodiment 1, as shown in figure 1, to cause the first valve element 7 and the second valve element
10 can easy motion, response accuracy and response speed are adjusted beneficial to the pressure of the present invention, in the relief portion and fine setting valve seat
It is provided with the bearing shell 14 coordinated respectively with the second valve element 10 and the first valve element 7.Due to unavoidably can during existing fuel gas transmission
Canister or metallic conduit are touched, the preferred material of the bearing shell 14 is bearing metal, so, has impurity in combustion gas
When, preferable bearing shell 14 has good wearability.
For ease of improving relief portion and finely tuning the flow rate controllability of valve seat, the sealing surface in the relief portion and fine setting valve seat
It is conical seal (contact) face.
To enable the deformation of secondary diaphragm 8 mutually to be responded with outlet pressure, the pressure of the present invention is improved from constant ability,
Side of the secondary diaphragm 8 away from primary diaphragm 6 communicates with venthole 11.
Further to improve the controllability of output pressure of the present invention, the side of the plunger shaft is additionally provided with escape orifice 15,
The escape orifice 15 is more than to the negotiability of medium presses negotiability of the runner 12 to medium, and above escape orifice 15 is used to adjust
Pressure in whole plunger shaft.
Embodiment 3：
The present embodiment is further qualified on the basis of above example, as shown in figure 1, further to improve present invention output
The controllability of pressure, the air pressure in the epicoele 111 is adjustable.
Above content is to combine the further description that specific preferred embodiment is made to the present invention, it is impossible to assert this
The embodiment of invention is confined to these explanations.For general technical staff of the technical field of the invention,
The other embodiment drawn in the case where not departing from technical scheme, should be included within the scope of the present invention.
Claims (6)
1. a kind of decompression main valve of convenient control gas outlet pressure, including valve body（1）, the valve body（1）On be provided with air inlet
Hole（2）And venthole（11）, air admission hole（2）And venthole（11）It is connected by relief portion, the relief portion includes the second valve element
（10）Be arranged on valve body（1）On valve seat, it is characterised in that the valve body（1）On be additionally provided with guide plate（9）, it is described to lead
To plate（9）On be provided with pilot hole, second valve element（10）Including being oriented to bar portion, decompression conical section and piston portion（3）, it is described
It is oriented to bar portion and coordinates with being oriented to interporal lacuna, decompression conical section is arranged in valve seat, piston portion（3）With valve body（1）Between form one
Individual plunger shaft, the second valve element（10）On be additionally provided with connection venthole（11）With the pressure runner of plunger shaft（12）, in plunger shaft
It is additionally provided with and is used for piston portion（3）Apply the second spring for playing stress（13）, valve body（1）On be additionally provided with for the second valve
Core（10）Apply the outlet pressure trimming part of compression；
The outlet pressure trimming part includes primary diaphragm（6）And secondary diaphragm（8）, the primary diaphragm（6）And secondary diaphragm
（8）It is respectively positioned on the second valve element（10）The side for being oriented to bar portion, and primary diaphragm under free state are set（6）And secondary diaphragm（8）
Residing plane and the second valve element（10）The direction of motion it is vertical, primary diaphragm（6）And secondary diaphragm（8）Between be additionally provided with fine setting
Valve seat, the front end of the fine setting valve seat are and air admission hole（2）The lumen communicated（112）, the rear end of valve seat is finely tuned by primary diaphragm
（6）And secondary diaphragm（8）Surround epicoele（111）, finely tuning valve seat includes fine tuning seat（5）With the first valve element（7）, the first valve element（7）
With valve body（1）Between be additionally provided with for realize fine setting valve base sealing the first spring（4）, primary diaphragm（6）With the first valve element
（7）Contact, secondary diaphragm（8）With the second valve element（10）It is in contact.
2. the decompression main valve of a kind of convenient control gas outlet pressure according to claim 1, it is characterised in that described
Relief portion and fine setting valve seat on be provided with respectively with the second valve element（10）With the first valve element（7）The bearing shell of cooperation（14）.
3. the decompression main valve of a kind of convenient control gas outlet pressure according to claim 1, it is characterised in that described to subtract
Sealing surface on splenium and fine setting valve seat is conical seal (contact) face.
4. the decompression main valve of a kind of convenient control gas outlet pressure according to claim 1, it is characterised in that described the
Two diaphragms（8）Away from primary diaphragm（6）Side and venthole（11）Communicate.
A kind of 5. decompression main valve of convenient control gas outlet pressure according to claim 1, it is characterised in that the work
The side of plug chamber is additionally provided with escape orifice（15）, the escape orifice（15）The negotiability of medium is more than and presses runner（12）It is right
The negotiability of medium.
6. according to a kind of convenient decompression main valve for controlling gas outlet pressure any one of in claim 1 to 5, it is special
Sign is, the epicoele（111）In air pressure it is adjustable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610678915.7A CN107763269A (en) | 2016-08-17 | 2016-08-17 | A kind of decompression main valve of convenient control gas outlet pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610678915.7A CN107763269A (en) | 2016-08-17 | 2016-08-17 | A kind of decompression main valve of convenient control gas outlet pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107763269A true CN107763269A (en) | 2018-03-06 |
Family
ID=61261199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610678915.7A Withdrawn CN107763269A (en) | 2016-08-17 | 2016-08-17 | A kind of decompression main valve of convenient control gas outlet pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107763269A (en) |
-
2016
- 2016-08-17 CN CN201610678915.7A patent/CN107763269A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180306 |