CN107763263A - A kind of No leakage gas pressure reducingequipment - Google Patents
A kind of No leakage gas pressure reducingequipment Download PDFInfo
- Publication number
- CN107763263A CN107763263A CN201610678914.2A CN201610678914A CN107763263A CN 107763263 A CN107763263 A CN 107763263A CN 201610678914 A CN201610678914 A CN 201610678914A CN 107763263 A CN107763263 A CN 107763263A
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- valve
- piston
- work
- valve element
- valve body
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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
- F16K17/02—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
- F16K17/06—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 special arrangements for adjusting the opening pressure
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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 No leakage gas pressure reducingequipment, including valve body, access road and exit passageway are provided with the valve body, has relief portion in valve body, the relief portion includes valve element and valve seat, wedge is also threaded with valve body, 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, and the port of export of bleeder valve is connected with exit passageway.The present invention is simple in construction, and outlet pressure regulation precision is high, beneficial to economizing on gas and realize safety gas.
Description
Technical field
The present invention relates to compressed gas decompressor field, more particularly to a kind of No leakage gas pressure reducingequipment.
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 No leakage gas pressure reducingequipment.
To solve the above problems, a kind of No leakage gas pressure reducingequipment provided by the invention is solved by following technical essential
Certainly problem：A kind of No leakage gas pressure reducingequipment, including valve body, access road and exit passageway, valve are provided with the valve body
There is the relief portion of connection access road and exit passageway in vivo, the relief portion includes valve element and the valve seat being arranged on valve body,
Wedge is also threaded with valve body, is provided with spring between wedge and valve element, in addition to regulating valve and is arranged in valve body
Plunger shaft, the plunger shaft are arranged on relief portion and piston, the piston are additionally provided with the side of exit passageway, plunger shaft
The side of valve element is provided with connecting rod for being fixedly connected with piston and valve element, the inlet end of regulating valve by inlet connection with
Access road is communicated, and the outlet side of regulating valve is connected by discharge connection with plunger shaft, and piston is located at discharge connection and piston
Between the tie point and exit passageway of chamber, exit passageway is located at piston between one end of valve element and valve element, and the outlet connects
Bleeder valve is additionally provided with pipe, the port of export of the bleeder valve is connected on exit passageway.
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 spring of setting is used to change the compression of spring by wedge
The decrement of spring, reach and change purpose of the spring to valve element compression size, the regulating valve of setting is for defeated into plunger shaft
The source of the gas for entering to promote 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 spring of setting
For transmitting adjustment of the wedge position to valve element compression size, so, by Multiple factors, the pressure of above-mentioned source of the gas, piston
The gas pressure of opposite side, spring, the both sides air pressure collective effect of valve element to position position of the valve element relative to valve seat, reach into
The goal of the invention of the accurate relief portion aperture of one step.
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 1% or so, and high pressure of the prior art
Gas pressure reducer pressure regulation precision is generally 10% or so；By the way that the port of export of bleeder valve is connected on exit passageway so that
The present invention without gas overflowing, is advantageous to economize on gas and with gas safety during pressure adjustment or under running status.
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 are communicated with straight open-work, and the valve element, spring, piston, connecting rod and plunger shaft are respectively positioned on directly
In 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
Close to the side of access road, outlet side and the connection end of straight open-work are located at valve seat close to the side of access road.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 and piston by relief portion
Both sides 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 1:0.45-0.7 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 spring of setting is used for the decrement for changing spring to the compression of spring by wedge, reaches
Change purpose of the spring to valve element compression size, the regulating valve of setting is used for the input into plunger shaft and promotes piston to be transported towards valve seat
Dynamic source of the gas, the bleeder valve of setting are used for the pressure size for adjusting above-mentioned source of the gas, and the spring of setting is used to transmit wedge position pair
The adjustment of valve element compression size, so, by Multiple factors, the pressure of above-mentioned source of the gas, the gas pressure of piston opposite side, bullet
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 spring
Or part is small to pressure-reducing valve outlet pressure influence factor, present invention controllable dot during pressure regulation is more, may be such that going out for the present invention
Atmospheric pressure regulation precision reaches 1% or so, and high pressure air relief valve pressure regulation precision of the prior art is generally 10% left side
It is right；By the way that the port of export of bleeder valve is connected on exit passageway so that the present invention pressure adjustment during or running status
Lower no gas overflowing, be advantageous to economize on gas and with gas safety.
Brief description of the drawings
Fig. 1 is a kind of structural representation of one specific embodiment of No leakage gas pressure reducingequipment of the present invention.
Scheming acceptance of the bid note is respectively：1st, valve seat, 2, wedge, 3, spring, 4, valve element, 5, access road, 6, exit passageway, 7, let out
Put valve, 8, piston, 9, valve body, 10, end cap, 11, plunger shaft, 12, discharge connection, 13, regulating valve, 14, inlet connection, 15, even
Bar.
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 No leakage gas pressure reducingequipment, including valve body 9, it is provided with access road 5 on the valve body 9 and goes out
Mouthful passage 6, there is the relief portion of connection access road 5 and exit passageway 6 in valve body 9, and the relief portion includes valve element 4 and is arranged on
Valve seat 1 on valve body 9, wedge 2 is also threaded with valve body 9, spring 3 is provided between wedge 2 and valve element 4, in addition to adjust
Section valve and the plunger shaft 11 being arranged in valve body 9, the plunger shaft 11 is arranged on relief portion close to the side of exit passageway 6, living
Piston 8 is additionally provided with plug chamber 11, the piston 8 is provided with for being fixedly connected with piston 8 and valve element 4 close to the side of valve element 4
Connecting rod 15, the inlet end of regulating valve communicated by inlet connection 14 with access road 5, and the outlet side of regulating valve is connect by outlet
Pipe 12 is connected with plunger shaft 11, and piston 8 is located between discharge connection 12 and the tie point and exit passageway 6 of plunger shaft 11, goes out
Mouth passage 6 is located at piston 8 between one end of valve element 4 and valve element 4, and bleeder valve 7, institute are additionally provided with the discharge connection 12
The port of export for stating bleeder valve 7 is connected on exit passageway 6.
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 spring 3 of setting is used for by wedge 2 to spring
3 compression changes the decrement of spring 3, reaches and changes spring 3 to the purpose of the compression size of valve element 4, the regulating valve of setting
For the source of the gas that input promotion piston 8 moves towards valve seat 1 into plunger shaft 11, the bleeder valve 7 of setting is used to adjust above-mentioned source of the gas
Pressure size, the spring 3 of setting is used to transmit adjustment of the position of wedge 2 to the compression size of valve element 4, so, by multiple
Factor, the pressure of above-mentioned source of the gas, the gas pressure of the opposite side of piston 8, spring 3, the both sides air pressure collective effect of valve element 4 are to position
Valve element 4 reaches further the accurately goal of the invention of relief portion aperture relative to the position of valve seat 1.
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 1% or so, and high pressure of the prior art
Gas pressure reducer pressure regulation precision is generally 10% or so；By the way that the port of export of bleeder valve 7 is connected on exit passageway 6, make
It is of the invention during pressure adjustment or under running status without gas overflowing, be advantageous to economize on gas and with gas safety.
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, spring 3, piston 8, the and of connecting rod 15
Plunger shaft 11 is respectively positioned in straight open-work, and the inlet end of regulating valve and outlet side are connected with straight open-work, and inlet end and straight open-work
Connection end be located at valve seat 1 close to the side of access road 5, outlet side and the connection end of straight open-work are located at valve seat 1 close to entrance
The side of passage 5.Preferably, internal thread is set on valve element 4 using being threadedly coupled between valve element 4 and connecting rod 15
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 0.45-0.7.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
7 flow tuning performance, the regulating valve and bleeder valve 7 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 No leakage gas pressure reducingequipment, including valve body（9）, the valve body（9）On be provided with access road（5）And outlet
Passage（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
It is provided with spring（3）, it is characterised in that also including regulating valve（13）Be arranged on valve body（9）Interior plunger shaft（11）, the work
Fill in chamber（11）Relief portion is arranged on close to exit passageway（6）Side, be additionally provided with piston in plunger shaft（8）, the piston（8）
Close to valve element（4）Side be provided with for being fixedly connected with piston（8）And valve element（4）Connecting rod（15）, regulating valve（13）Enter
Gas end passes through inlet connection（14）With access road（5）Communicate, regulating valve（13）Outlet side pass through discharge connection（12）With work
Fill in chamber（11）It is connected, and piston（8）Positioned at discharge connection（12）With plunger shaft（11）Tie point and exit passageway（6）Between,
Exit passageway 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
Bleeder valve（7）, the bleeder valve（7）The port of export be connected to exit passageway（6）On.
A kind of 2. No leakage gas pressure reducingequipment 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. No leakage gas pressure reducingequipment according to claim 1, it is characterised in that the valve body（9）Upper setting
There are straight open-work, the valve seat（1）For the variable-diameter structure on straight open-work, the threaded one end connection wedge of straight open-work（2）, straight open-work
The other end by with valve body（9）The end cap of threaded connection（10）Sealing, access road（5）And exit passageway（6）With straight open-work
Communicate, the valve element（4）, spring（3）, piston（8）, connecting rod（15）And plunger shaft（11）It is respectively positioned in straight open-work, regulating valve
（13）Inlet end and outlet side be connected with straight open-work, and the connection end of inlet end and straight open-work is located at valve seat（1）Close to enter
Mouth passage（5）Side, the connection end of outlet side and straight open-work is located at valve seat（1）Close to access road（5）Side.
A kind of 4. No leakage gas pressure reducingequipment according to claim 1, it is characterised in that the piston（8）Thickness
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 bearing air pressure,
Piston（8）Axial direction on produce thrust area ratio between 1:Between 0.45-0.7.
5. according to a kind of No leakage gas pressure reducingequipment any one of in Claims 1-4, it is characterised in that described
Regulating valve（13）And bleeder valve（7）It is stop valve.
A kind of 6. No leakage gas pressure reducingequipment according to claim 5, it is characterised in that the sealing surface of the stop valve
For taper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610678914.2A CN107763263A (en) | 2016-08-17 | 2016-08-17 | A kind of No leakage gas pressure reducingequipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610678914.2A CN107763263A (en) | 2016-08-17 | 2016-08-17 | A kind of No leakage gas pressure reducingequipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107763263A true CN107763263A (en) | 2018-03-06 |
Family
ID=61261293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610678914.2A Withdrawn CN107763263A (en) | 2016-08-17 | 2016-08-17 | A kind of No leakage gas pressure reducingequipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107763263A (en) |
-
2016
- 2016-08-17 CN CN201610678914.2A patent/CN107763263A/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 |