CN107763232A - A kind of air valve structure - Google Patents
A kind of air valve structure Download PDFInfo
- Publication number
- CN107763232A CN107763232A CN201610678906.8A CN201610678906A CN107763232A CN 107763232 A CN107763232 A CN 107763232A CN 201610678906 A CN201610678906 A CN 201610678906A CN 107763232 A CN107763232 A CN 107763232A
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- CN
- China
- Prior art keywords
- valve
- piston
- work
- valve seat
- access road
- 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.)
- Withdrawn
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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
- 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
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
-
- 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
- F16K1/54—Arrangements for modifying the way in which the rate of flow varies during the actuation of the valve
-
- 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
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
-
- 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
- F16K17/044—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 with more than one spring
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses a kind of air valve structure, including valve body, access road and exit passageway are provided with the valve body, there is relief portion in valve body, the relief portion includes valve element and valve seat, wedge is also threaded with valve body, the first spring, in addition to regulating valve and plunger shaft are provided between wedge and valve element, piston is additionally provided with plunger shaft, the piston is provided with connecting rod close to the side of valve element, and bleeder valve is additionally provided with the discharge connection；Second spring of the both ends respectively with valve seat and piston contact is additionally provided between the valve seat and piston.The present invention is simple in construction, and outlet pressure regulation precision is high.
Description
Technical field
The present invention relates to compressed gas decompressor field, more particularly to a kind of air valve structure.
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 the decompression performance of which kind of structure pressure-reducing valve by
The spring being provided with has a great influence, and the mechanical property during spring machining accuracy, unit deformation elastic force size, use
Change poor controllability, so so that the range of regulation of traditional high pressure air relief valve is small, regulation precision is low, stability in use
Difference.
The content of the invention
For it is above-mentioned it is existing no matter the spring that the decompression performance of which kind of structure pressure-reducing valve is provided with has a great influence, and
Mechanical property change poor controllability during spring machining accuracy, use, so so that traditional high pressure air relief valve
The problem of range of regulation is small, regulation precision is low, stability in use is poor, the invention provides a kind of air valve structure.
To solve the above problems, a kind of air valve structure provided by the invention solves problem by following technical essential：One
Kind of air valve structure, including valve body, be provided with access road and exit passageway on the valve body, have in valve body connection access road and
The relief portion of exit passageway, the relief portion include valve element and the valve seat being arranged on valve body, pressure are also threaded with valve body
Seat, the first spring, in addition to regulating valve and the plunger shaft being arranged in valve body, the plunger shaft are provided between wedge and valve element
It is arranged on relief portion and piston is additionally provided with the side of exit passageway, plunger shaft, the piston is set close to the side of valve element
The connecting rod for being fixedly connected with piston and valve element is equipped with, the inlet end of regulating valve is communicated by inlet connection with access road, is adjusted
The outlet side of section valve is connected by discharge connection with plunger shaft, and piston is located at tie point and the outlet of discharge connection and plunger shaft
Between passage, exit passageway is located at piston between one end of valve element and valve element, is additionally provided with and releases on the discharge connection
Valve；
Second spring of the both ends respectively with valve seat and piston contact is additionally provided between the valve seat and piston.
Specifically, the access road and exit passageway that set are respectively used to connect the gas after original high pressure gas source capsule and decompression
Source capsule, the relief portion of setting is the decompression member of the present invention, i.e., reaches adjustment by entrance by the gap between valve element and valve seat
The throughput of passage to exit passageway reaches the purpose of decompression.The first spring set is used for the pressure to the first spring by wedge
The decrement of the spring of stress changes first, reach and change the first spring to the purpose of valve element compression size, the regulating valve of setting
For the source of the gas that input promotion piston moves towards valve seat into plunger shaft, the bleeder valve of setting is used for the pressure for adjusting above-mentioned source of the gas
Size, the first spring of setting is used to transmitting adjustment of the wedge position to valve element compression size, the second spring that sets is used for
The size of power between valve seat and piston is transmitted, so, by Multiple factors, the pressure of above-mentioned source of the gas, the gas of piston opposite side
Pressure, the first spring and second spring, the both sides air pressure collective effect of valve element are reached with positioning position of the valve element relative to valve seat
The further goal of the invention of accurate relief portion aperture.
By arrangement above, because single spring or part are small to pressure-reducing valve outlet pressure influence factor, the present invention is adjusting
Controllable dot is more during pressure, may be such that the outlet pressure regulation precision of the present invention reaches 0.5% or so, and height of the prior art
Pressure gas pressure reducer pressure regulation precision is generally 10% or so.
Further technical scheme is：
It is used for the aisle spare pace of change of gas circulation between valve element and valve seat to reduce valve element in motion process, that is, improves
The controllability of circulation passage area, the section of the valve seat and valve element is tapered, and valve seat and the larger-size one end of valve element
Close to access road.Above structure is also convenient for the present invention and is blocking the sealing of state bottom spool and valve seat.
For ease of the processing of the present invention, I＆ M, straight open-work is provided with the valve body, the valve seat is straight open-work
On variable-diameter structure, the threaded one end connection wedge of straight open-work, the other end of straight open-work passes through the end cap that is connected with valve body screw thread
Sealing, access road and exit passageway communicate with straight open-work, the valve element, the first spring, piston, connecting rod and the equal position of plunger shaft
In in straight open-work, the inlet end of regulating valve and outlet side are connected with straight open-work, and the connection end of inlet end and straight open-work is located at
Valve seat is located at valve seat close to the side of access road close to the side of access road, outlet side and the connection end of straight open-work.As
Preferred scheme, using being threadedly coupled between valve element and connecting rod, i.e., internal thread hole is set on valve element, by valve element with piston by depressurizing
The both sides in portion are respectively charged into straight open-work.
As the above analysis, piston is because of factors such as the air-flow at relief portion, impurity attachments, and stress is complicated, for optimization
Sealing property between piston and plunger shaft, the thickness of the piston is not less than 1.5cm, and piston is close to one end of valve seat and far
From one end of valve seat respectively for air pressure is born, the area ratio of thrust is produced in the axial direction of piston between 1:0.45-0.8 it
Between.The selection of the area ratio is intended to improve the output pressure scope of the present invention.
For the flow tuning performance of optimization pressure regulator valve and bleeder valve, the regulating valve and bleeder valve are stop valve.
Further to optimize above-mentioned flow tuning performance, the sealing surface of the stop valve is taper.
The invention has the advantages that：
The present invention is simple in construction, and the first spring of setting is used to change the first spring to the compression of the first spring by wedge
Decrement, reaches and changes purpose of first spring to valve element compression size, and the regulating valve of setting is used to input into plunger shaft
The source of the gas for promoting piston to be moved towards valve seat, the bleeder valve of setting are used for the pressure size for adjusting above-mentioned source of the gas, the first bullet of setting
Spring is used to transmitting adjustment of the wedge position to valve element compression size, the second spring set is used to transmit between valve seat and piston
The size of power, so, by Multiple factors, the pressure of above-mentioned source of the gas, the gas pressure of piston opposite side, the first spring and second
Spring, the both sides air pressure collective effect of valve element are to position position of the valve element relative to valve seat, by arrangement above, due to single bullet
Spring or part are small to pressure-reducing valve outlet pressure influence factor, and present invention controllable dot during pressure regulation is more, may be such that the present invention's
Outlet pressure regulation precision reaches 0.5% or so, and high pressure air relief valve pressure regulation precision of the prior art is generally
10% or so.
Brief description of the drawings
Fig. 1 is a kind of structural representation of one specific embodiment of air valve structure of the present invention.
Scheming acceptance of the bid note is respectively：1st, valve seat, 2, wedge, the 3, first spring, 4, valve element, 5, access road, 6, exit passageway,
7th, second spring, 8, piston, 9, valve body, 10, end cap, 11, plunger shaft, 12, discharge connection, 13, regulating valve, 14, inlet connection,
15th, connecting rod, 16, bleeder valve.
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 air valve structure, including valve body 9, access road 5 and exit passageway 6, valve are provided with the valve body 9
There is the relief portion of connection access road 5 and exit passageway 6 in body 9, the relief portion includes valve element 4 and is arranged on valve body 9
Valve seat 1, be also threaded with wedge 2 on valve body 9, be provided with the first spring 3 between wedge 2 and valve element 4, in addition to regulating valve and
The plunger shaft 11 being arranged in valve body 9, the plunger shaft 11 are arranged on relief portion close to the side of exit passageway 6, plunger shaft 11
In be additionally provided with piston 8, the piston 8 is provided with the connecting rod for being fixedly connected with piston 8 and valve element 4 close to the side of valve element 4
15, the inlet end of regulating valve is communicated by inlet connection 14 with access road 5, the outlet side of regulating valve by discharge connection 12 with
Plunger shaft 11 is connected, and piston 8 is located between discharge connection 12 and the tie point and exit passageway 6 of plunger shaft 11, exit passageway 6
Positioned at piston 8 between one end of valve element 4 and valve element 4, bleeder valve 16 is additionally provided with the discharge connection 12；
The second spring 7 that both ends contact with valve seat 1 and piston 8 respectively is additionally provided between the valve seat 1 and piston 8.
In the present embodiment, the access road 5 and exit passageway 6 of setting are respectively used to connect original high pressure gas source capsule and decompression
Gas source pipe afterwards, the relief portion of setting is the decompression member of the present invention, i.e., reaches tune by the gap between valve element 4 and valve seat 1
The whole throughput by access road 5 to exit passageway 6 reaches the purpose of decompression.The first spring 3 set is used for right by wedge 2
The compression of first spring 3 changes the decrement of the first spring 3, reaches and changes mesh of first spring 3 to the compression size of valve element 4
, the regulating valve of setting is used for the input into plunger shaft 11 and promotes the source of the gas that piston 8 moves towards valve seat 1, the bleeder valve 16 of setting
For adjusting the pressure size of above-mentioned source of the gas, the first spring 3 of setting is used to transmit the position of wedge 2 to the compression size of valve element 4
Adjustment, the second spring 7 that sets be used to transmit the size of power between valve seat 1 and piston 8, it is so, above-mentioned by Multiple factors
The pressure of source of the gas, the gas pressure of the opposite side of piston 8, the first spring 3 and second spring 7, the both sides air pressure collective effect of valve element 4
To position position of the valve element 4 relative to valve seat 1, reach the goal of the invention of further accurate relief portion aperture.
By arrangement above, because single spring or part are small to pressure-reducing valve outlet pressure influence factor, the present invention is adjusting
Controllable dot is more during pressure, may be such that the outlet pressure regulation precision of the present invention reaches 0.5% or so, and height of the prior art
Pressure gas pressure reducer pressure regulation precision is generally 10% or so.
Embodiment 2：
The present embodiment is further qualified on the basis of embodiment 1, as shown in figure 1, to reduce the valve in motion process of valve element 4
It is used for the aisle spare pace of change of gas circulation between core 4 and valve seat 1, that is, improves the controllability of circulation passage area, it is described
The section of valve seat 1 and valve element 4 is tapered, and valve seat 1 and 4 larger-size one end of valve element are close to access road 5.Above structure
It is also convenient for the present invention and is blocking the sealing of state bottom spool 4 and valve seat 1.
For ease of the processing of the present invention, I＆ M, straight open-work is provided with the valve body 9, the valve seat 1 is straight saturating
Variable-diameter structure on hole, the threaded one end connection wedge 2 of straight open-work, the other end of straight open-work with valve body 9 by being threadedly coupled
End cap 10 seals, and access road 5 and exit passageway 6 communicate with straight open-work, the valve element 4, the first spring 3, piston 8, connecting rod
15 and plunger shaft 11 be respectively positioned in straight open-work, the inlet end of regulating valve and outlet side are connected with straight open-work, and inlet end with it is straight
The connection end of open-work is located at valve seat 1 close to the side of access road 5, and it is close that the connection end of outlet side and straight open-work is located at valve seat 1
The side of access road 5.Preferably, use and be threadedly coupled between valve element 4 and connecting rod 15, i.e., on valve element 4 in setting
Screwed hole, valve element 4 and piston 8 are respectively charged into straight open-work by the both sides of relief portion.
As the above analysis, piston 8 is because of factors such as the air-flow at relief portion, impurity attachments, and stress is complicated, for optimization
Sealing property between piston 8 and plunger shaft 11, the thickness of the piston 8 is not less than 1.5cm, and piston 8 is close to the one of valve seat 1
End, respectively for air pressure is born, produces the area ratio of thrust between 1 with one end away from valve seat 1 in the axial direction of piston 8:
Between 0.45-0.8.The selection of the area ratio is intended to improve the output pressure scope of the present invention.
Embodiment 3：
The present embodiment is further qualified on the basis of above example, as shown in figure 1, being optimization pressure regulator valve 13 and bleeder valve
16 flow tuning performance, the regulating valve and bleeder valve 16 are stop valve.
Further to optimize above-mentioned flow tuning performance, the sealing surface of the stop valve is taper.
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 air valve structure, including valve body（9）, the valve body（9）On be provided with access road（5）And exit passageway（6）, valve
Body（9）Inside there is connection access road（5）And exit passageway（6）Relief portion, the relief portion includes valve element（4）Be arranged on valve
Body（9）On valve seat（1）, valve body（9）On be also threaded with wedge（2）, wedge（2）With valve element（4）Between be provided with first
Spring（3）, it is characterised in that also including regulating valve（13）Be arranged on valve body（9）Interior plunger shaft（11）, the plunger shaft
（11）Relief portion is arranged on close to exit passageway（6）Side, be additionally provided with piston in plunger shaft（8）, the piston（8）It is close
Valve element（4）Side be provided with for being fixedly connected with piston（8）And valve element（4）Connecting rod（15）, regulating valve（13）Inlet end
Pass through inlet connection（14）With access road（5）Communicate, regulating valve（13）Outlet side pass through discharge connection（12）With plunger shaft
（11）It is connected, and piston（8）Positioned at discharge connection（12）With plunger shaft（11）Tie point and exit passageway（6）Between, outlet
Passage is located at piston（8）Close to valve element（4）One end and valve element（4）Between, the discharge connection（12）On be additionally provided with and release
Valve（16）；
The valve seat（1）With piston（8）Between be additionally provided with both ends respectively with valve seat（1）And piston（8）The second spring of contact
（7）.
A kind of 2. air valve structure according to claim 1, it is characterised in that the valve seat（1）And valve element（4）Section
It is tapered, and valve seat（1）And valve element（4）Larger-size one end is close to access road（5）.
A kind of 3. air valve structure according to claim 1, it is characterised in that the valve body（9）On be provided with straight open-work, institute
State valve seat（1）For the variable-diameter structure on straight open-work, the threaded one end connection wedge of straight open-work（2）, the other end of straight open-work passes through
With valve body（9）The end cap of threaded connection（10）Sealing, access road（5）And exit passageway（6）Communicated with straight open-work, the valve
Core（4）, the first spring（3）, piston（8）, connecting rod（15）And plunger shaft（11）It is respectively positioned in straight open-work, regulating valve（13）Air inlet
End and outlet side are connected with straight open-work, and the connection end of inlet end and straight open-work is located at valve seat（1）Close to access road（5）'s
Side, outlet side and the connection end of straight open-work are located at valve seat（1）Close to access road（5）Side.
A kind of 4. air valve structure according to claim 1, it is characterised in that the piston（8）Thickness be not less than
1.5cm, and piston（8）Close to valve seat（1）One end with away from valve seat（1）One end respectively for air pressure is born, in piston（8）
Axial direction on produce thrust area ratio between 1:Between 0.45-0.8.
5. according to a kind of air valve structure any one of in Claims 1-4, it is characterised in that the regulating valve（13）
And bleeder valve（16）It is stop valve.
6. a kind of air valve structure according to claim 5, it is characterised in that the sealing surface of the stop valve is taper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610678906.8A CN107763232A (en) | 2016-08-17 | 2016-08-17 | A kind of air valve structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610678906.8A CN107763232A (en) | 2016-08-17 | 2016-08-17 | A kind of air valve structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107763232A true CN107763232A (en) | 2018-03-06 |
Family
ID=61260430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610678906.8A Withdrawn CN107763232A (en) | 2016-08-17 | 2016-08-17 | A kind of air valve structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107763232A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112377297A (en) * | 2020-11-16 | 2021-02-19 | 四川莱克斯流体控制设备有限公司 | Multifunctional universal adjustable exhaust valve |
-
2016
- 2016-08-17 CN CN201610678906.8A patent/CN107763232A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112377297A (en) * | 2020-11-16 | 2021-02-19 | 四川莱克斯流体控制设备有限公司 | Multifunctional universal adjustable exhaust valve |
| CN112377297B (en) * | 2020-11-16 | 2022-05-27 | 四川莱克斯流体控制设备有限公司 | Multifunctional universal adjustable exhaust valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180306 |
|
| WW01 | Invention patent application withdrawn after publication |