CN205534434U - Air valve - Google Patents
Air valve Download PDFInfo
- Publication number
- CN205534434U CN205534434U CN201620264201.7U CN201620264201U CN205534434U CN 205534434 U CN205534434 U CN 205534434U CN 201620264201 U CN201620264201 U CN 201620264201U CN 205534434 U CN205534434 U CN 205534434U
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- China
- Prior art keywords
- valve
- piston
- spool
- work
- valve seat
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses an air valve, which comprises the following components: a valve body, be provided with access road and exit channel on the valve body, have depressurization portion in the valve body, depressurization portion includes case and disk seat, and it has the seat of pressure to go back threaded connection on the valve body, presses to be provided with first spring between seat and the case, still includes governing valve and piston chamber, still is provided with the piston in the piston chamber, one side that the piston is close to the case is provided with the connecting rod, on taking over, the export still is provided with the bleeder valve, still be provided with between disk seat and the piston both ends respectively with disk seat and piston contact's second spring. The utility model discloses simple structure, it is high to go out atmospheric pressure regulation precision.
Description
Technical field
This utility model relates to compressed gas decompressor field, particularly relates to a kind of air valve.
Background technology
Along with natural gas uses more and more extensive, various forms of air relief valve emerge in an endless stream, and optimizing further of natural gas depressurization valve arrangement will be promoted the utilization of natural gas further.As a example by environmental consciousness, natural gas can be greatly reduced Vehicular exhaust pollution for the fuel of vehicle motor, but in order to improve the single aeration stroke of the vehicle with natural gas as fuel, gas cylinder it is provided with for housing natural gas on vehicle, and the gas pressure being finally introducing cylinder is generally several kPas, so, the air relief valve reducing pressure high-pressure natural gas is particularly important, simultaneously in practice, the stability of above air relief valve performance has been reacted on the power of vehicle even in traffic safety the most intuitively.
The pressure inside the tank of prior art mesohigh gas cylinder can reach 20Mpa or higher, high pressure air relief valve is a kind of pressure control device in high-pressure gas pipeline system, its output valve directly influences the running status of follow-up equipment, and prior art mesohigh gas decompression valve arrangement is mainly diaphragm type and piston type.No matter the decompression performance of which kind of structure pressure-reducing valve is affected bigger by the spring being provided with, and the mechanical property change poor controllability during spring machining accuracy, unit deformation elastic force size, use, so so that the range of regulation of traditional high pressure air relief valve is little, regulation precision is low, stability in use is poor.
Utility model content
Decompression performance for above-mentioned existing no matter which kind of structure pressure-reducing valve is affected bigger by the spring being provided with, and the mechanical property change poor controllability during spring machining accuracy, use, so, making the problem that range of regulation is little, regulation precision is low, stability in use is poor of traditional high pressure air relief valve, this utility model provides a kind of air valve.
nullFor solving the problems referred to above，A kind of air valve that this utility model provides solves problem by techniques below main points: a kind of air valve，Including valve body，Access road and exit passageway it is provided with on described valve body，Connection access road and the relief portion of exit passageway is had in valve body，Described relief portion includes spool and the valve seat being arranged on valve body，The most threaded on valve body have wedge，The first spring it is provided with between wedge and spool，Also include the plunger shaft regulating valve and being arranged in valve body，Described plunger shaft is arranged on the relief portion side near exit passageway，Plunger shaft is additionally provided with piston，Described piston is provided with for fixing connection piston and the connecting rod of spool near the side of spool，The inlet end of regulation valve is communicated with access road by inlet connection，The outlet side of regulation valve is connected with plunger shaft by discharge connection，And piston is between discharge connection and the junction point of plunger shaft and exit passageway，Exit passageway at piston near between one end and spool of spool，It is additionally provided with bleeder valve on described discharge connection；
Be additionally provided with between described valve seat and piston two ends respectively with valve seat and the second spring of piston contact.
Concrete, the access road and the exit passageway that arrange are respectively used to connect original high pressure gas source capsule and post-decompression gas source pipe, the relief portion arranged is decompression member of the present utility model, i.e. reaches adjustment by the gap between spool and valve seat and is reached the purpose of decompression by the throughput of access road to exit passageway.The first spring arranged for changing the decrement of the first spring by wedge to the compressive stress of the first spring, reach the purpose changing the first spring to spool compressive stress size, the regulation valve arranged promotes, for input in plunger shaft, the source of the gas that piston moves towards valve seat, the bleeder valve arranged is for adjusting the pressure size of above-mentioned source of the gas, the first spring arranged is for transmitting the adjustment to spool compressive stress size of the wedge position, the second spring arranged is for transmitting the size of power between valve seat and piston, so, by multiple factors, the pressure of above-mentioned source of the gas, the gas pressure of piston opposite side, first spring and the second spring, the both sides air pressure of spool acts on normal valve core jointly relative to the position of valve seat, reach the goal of the invention of the most accurately relief portion aperture.
Pass through arrangement above, owing to single spring or parts are little to air relief valve outlet pressure influence factor, this utility model controllable dot during pressure regulation is many, outlet pressure regulation precision of the present utility model can be made to reach about 0.5%, and high pressure air relief valve pressure regulation precision of the prior art is generally about 10%.
Further technical scheme is:
For reducing the aisle spare pace of change that spool circulates between spool and valve seat in motor process for gas, i.e. improve the controllability of circulation passage area, the cross section of described valve seat and spool is the most tapered, and valve seat and the larger-size one end of spool are near access road.Above structure is also convenient for this utility model in the sealing blocking state bottom spool and valve seat.
For ease of processing of the present utility model, I& M, straight open-work it is provided with on described valve body, described valve seat is the variable-diameter structure on straight open-work, the threaded one end of straight open-work connects wedge, the other end of straight open-work is by the end cap seal being connected with valve body screw thread, access road and exit passageway all communicate with straight open-work, described spool, first spring, piston, connecting rod and plunger shaft are respectively positioned in straight open-work, the inlet end of regulation valve is all connected with straight open-work with outlet side, and the end that connects of inlet end and straight open-work is positioned at the valve seat side near access road, outlet side is positioned at the valve seat side near access road with the end that connects of straight open-work.Preferably, use between spool with connecting rod and threaded, internal thread hole is i.e. set on spool, spool and piston are respectively charged in straight open-work by the both sides of relief portion.
As the above analysis, piston is because of factors such as the air-flow at relief portion, impurity attachments, stress is complicated, for the sealing property between optimization piston and plunger shaft, the thickness of described piston is not less than 1.5cm, and one end that piston is near valve seat and the one end away from valve seat are respectively for bearing air pressure, produce the area ratio of thrust in the axial direction of piston between 1:0.45-0.8.The selection of described area ratio is intended to improve output pressure scope of the present utility model.
For optimizing pressure regulator valve and the flow tuning performance of bleeder valve, described regulation valve and bleeder valve are stop valve.
For optimizing above-mentioned flow tuning performance further, the sealing surface of described stop valve is taper.
This utility model has the advantages that
nullThis utility model simple in construction，The first spring arranged for changing the decrement of the first spring by wedge to the compressive stress of the first spring，Reach the purpose changing the first spring to spool compressive stress size，The regulation valve arranged promotes, for input in plunger shaft, the source of the gas that piston moves towards valve seat，The bleeder valve arranged is for adjusting the pressure size of above-mentioned source of the gas，The first spring arranged is for transmitting the adjustment to spool compressive stress size of the wedge position、The second spring arranged is for transmitting the size of power between valve seat and piston，So，By multiple factors，The pressure of above-mentioned source of the gas、The gas pressure of piston opposite side、First spring and the second spring、The both sides air pressure of spool acts on normal valve core jointly relative to the position of valve seat，Pass through arrangement above，Owing to single spring or parts are little to air relief valve outlet pressure influence factor，This utility model controllable dot during pressure regulation is many，Outlet pressure regulation precision of the present utility model can be made to reach about 0.5%，And high pressure air relief valve pressure regulation precision of the prior art is generally about 10%.
Accompanying drawing explanation
Fig. 1 is the structural representation of one specific embodiment of a kind of air valve described in the utility model.
Figure acceptance of the bid note is respectively as follows: 1, valve seat, and 2, wedge, the 3, first spring, 4, spool, 5, access road, 6, exit passageway, 7, the second spring, 8, piston, 9, valve body, 10, end cap, 11, plunger shaft, 12, discharge connection, 13, regulation valve, 14, inlet connection, 15, connecting rod, 16, bleeder valve.
Detailed description of the invention
Below in conjunction with embodiment, the utility model is described in further detail, but structure of the present utility model is not limited only to following example:
Embodiment 1:
nullAs shown in Figure 1，A kind of air valve，Including valve body 9，Access road 5 and exit passageway 6 it is provided with on described valve body 9，Connection access road 5 and the relief portion of exit passageway 6 is had in valve body 9，Described relief portion includes spool 4 and the valve seat 1 being arranged on valve body 9，The most threaded on valve body 9 have wedge 2，The first spring 3 it is provided with between wedge 2 and spool 4，Also include the plunger shaft 11 regulating valve and being arranged in valve body 9，Described plunger shaft 11 is arranged on the relief portion side near exit passageway 6，Plunger shaft 11 is additionally provided with piston 8，Described piston 8 is provided with the connecting rod 15 for fixing connection piston 8 and spool 4 near the side of spool 4，The inlet end of regulation valve is communicated with access road 5 by inlet connection 14，The outlet side of regulation valve is connected with plunger shaft 11 by discharge connection 12，And piston 8 is between discharge connection 12 and the junction point of plunger shaft 11 and exit passageway 6，Exit passageway 6 at piston 8 near between one end of spool 4 and spool 4，It is additionally provided with bleeder valve 16 on described discharge connection 12；
The second spring 7 that two ends contact respectively it is additionally provided with valve seat 1 and piston 8 between described valve seat 1 and piston 8.
In the present embodiment, the access road 5 and the exit passageway 6 that arrange are respectively used to connect original high pressure gas source capsule and post-decompression gas source pipe, the relief portion arranged is decompression member of the present utility model, i.e. reaches adjustment by the gap between spool 4 and valve seat 1 and is reached the purpose of decompression by the throughput of access road 5 to exit passageway 6.The first spring 3 arranged for changing the decrement of the first spring 3 by wedge 2 to the compressive stress of the first spring 3, reach the purpose changing the first spring 3 to spool 4 compressive stress size, the regulation valve arranged promotes, for input in plunger shaft 11, the source of the gas that piston 8 moves towards valve seat 1, the bleeder valve 16 arranged is for adjusting the pressure size of above-mentioned source of the gas, the first spring 3 arranged is for transmitting the adjustment to spool 4 compressive stress size of wedge 2 position, the second spring 7 arranged is for transmitting the size of power between valve seat 1 and piston 8, so, by multiple factors, the pressure of above-mentioned source of the gas, the gas pressure of piston 8 opposite side, first spring 3 and the second spring 7, the both sides air pressure of spool 4 acts on normal valve core 4 jointly relative to the position of valve seat 1, reach the goal of the invention of the most accurately relief portion aperture.
Pass through arrangement above, owing to single spring or parts are little to air relief valve outlet pressure influence factor, this utility model controllable dot during pressure regulation is many, outlet pressure regulation precision of the present utility model can be made to reach about 0.5%, and high pressure air relief valve pressure regulation precision of the prior art is generally about 10%.
Embodiment 2:
The present embodiment is further qualified on the basis of embodiment 1, as shown in Figure 1, for reducing the aisle spare pace of change that spool 4 circulates between spool 4 and valve seat 1 in motor process for gas, i.e. improve the controllability of circulation passage area, the cross section of described valve seat 1 and spool 4 is the most tapered, and valve seat 1 and the larger-size one end of spool 4 are near access road 5.Above structure is also convenient for this utility model in the sealing blocking state bottom spool 4 and valve seat 1.
For ease of processing of the present utility model, I& M, it is provided with straight open-work on described valve body 9, described valve seat 1 is the variable-diameter structure on straight open-work, the threaded one end of straight open-work connects wedge 2, the other end of straight open-work is sealed by the end cap 10 threadeded with valve body 9, access road 5 and exit passageway 6 all communicate with straight open-work, described spool 4, first spring 3, piston 8, connecting rod 15 and plunger shaft 11 are respectively positioned in straight open-work, the inlet end of regulation valve is all connected with straight open-work with outlet side, and the end that connects of inlet end and straight open-work is positioned at the valve seat 1 side near access road 5, outlet side is positioned at the valve seat 1 side near access road 5 with the end that connects of straight open-work.Preferably, use between spool 4 with connecting rod 15 and threaded, i.e. internal thread hole is set on spool 4, spool 4 and piston 8 are respectively charged in 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, stress is complicated, for the sealing property between optimization piston 8 and plunger shaft 11, the thickness of described piston 8 is not less than 1.5cm, and piston 8 near one end of valve seat 1 with away from one end of valve seat 1 respectively for bearing air pressure, the axial direction of piston 8 produces the area ratio of thrust between 1:0.45-0.8.The selection of described area ratio is intended to improve output pressure scope of the present utility model.
Embodiment 3:
The present embodiment is further qualified on the basis of above example, as it is shown in figure 1, for optimizing pressure regulator valve 13 and the flow tuning performance of bleeder valve 16, described regulation valve and bleeder valve 16 are stop valve.
For optimizing above-mentioned flow tuning performance further, the sealing surface of described stop valve is taper.
Above content is to combine the further description that this utility model is made by concrete preferred implementation, it is impossible to assert that detailed description of the invention of the present utility model is confined to these explanations.For this utility model person of an ordinary skill in the technical field, other embodiments drawn under without departing from the technical solution of the utility model, should be included in protection domain of the present utility model.
Claims (6)
- null1. an air valve，Including valve body (9)，Access road (5) and exit passageway (6) it is provided with on described valve body (9)，Connection access road (5) and the relief portion of exit passageway (6) is had in valve body (9)，Described relief portion includes spool (4) and the valve seat (1) being arranged on valve body (9)，Valve body (9) is the most threaded wedge (2)，The first spring (3) it is provided with between wedge (2) and spool (4)，It is characterized in that，Also include the plunger shaft (11) regulating valve (13) and being arranged in valve body (9)，Described plunger shaft (11) is arranged on the relief portion side near exit passageway (6)，Plunger shaft is additionally provided with piston (8)，Described piston (8) is provided with the connecting rod (15) for fixing connection piston (8) and spool (4) near the side of spool (4)，The inlet end of regulation valve (13) is communicated with access road (5) by inlet connection (14)，The outlet side of regulation valve (13) is connected with plunger shaft (11) by discharge connection (12)，And piston (8) is positioned between discharge connection (12) and the junction point of plunger shaft (11) and exit passageway (6)，Exit passageway is positioned at piston (8) between one end and the spool (4) of spool (4)，Bleeder valve (16) it is additionally provided with on described discharge connection (12)；The second spring (7) that two ends contact respectively it is additionally provided with valve seat (1) and piston (8) between described valve seat (1) with piston (8).
- A kind of air valve the most according to claim 1, it is characterised in that the cross section of described valve seat (1) and spool (4) is the most tapered, and valve seat (1) and spool (4) larger-size one end are near access road (5).
- A kind of air valve the most according to claim 1, it is characterized in that, described valve body is provided with straight open-work on (9), described valve seat (1) is the variable-diameter structure on straight open-work, the threaded one end of straight open-work connects wedge (2), the other end of straight open-work is sealed by the end cap (10) threadeded with valve body (9), access road (5) and exit passageway (6) all communicate with straight open-work, described spool (4), first spring (3), piston (8), connecting rod (15) and plunger shaft (11) are respectively positioned in straight open-work, the inlet end of regulation valve (13) is all connected with straight open-work with outlet side, and inlet end is positioned at the side of the close access road (5) of valve seat (1) with the connection end of straight open-work, outlet side is positioned at the valve seat (1) side near access road (5) with the connection end of straight open-work.
- A kind of air valve the most according to claim 1, it is characterized in that, the thickness of described piston (8) is not less than 1.5cm, and piston (8) near one end of valve seat (1) with away from one end of valve seat (1) respectively for bearing air pressure, in the upper area ratio of thrust that produces of piston (8) between 1:0.45-0.8.
- 5. according to a kind of air valve any one of in Claims 1-4, it is characterised in that described regulation valve (13) and bleeder valve (16) are stop valve.
- A kind of air valve the most according to claim 5, it is characterised in that the sealing surface of described stop valve is taper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620264201.7U CN205534434U (en) | 2016-04-01 | 2016-04-01 | Air valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620264201.7U CN205534434U (en) | 2016-04-01 | 2016-04-01 | Air valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205534434U true CN205534434U (en) | 2016-08-31 |
Family
ID=56786426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620264201.7U Expired - Fee Related CN205534434U (en) | 2016-04-01 | 2016-04-01 | Air valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205534434U (en) |
-
2016
- 2016-04-01 CN CN201620264201.7U patent/CN205534434U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160831 Termination date: 20170401 |