CN205534435U - Be favorable to improving step -down main valve of pressure adjustment precision of giving vent to anger - Google Patents
Be favorable to improving step -down main valve of pressure adjustment precision of giving vent to anger Download PDFInfo
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- CN205534435U CN205534435U CN201620264206.XU CN201620264206U CN205534435U CN 205534435 U CN205534435 U CN 205534435U CN 201620264206 U CN201620264206 U CN 201620264206U CN 205534435 U CN205534435 U CN 205534435U
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- spool
- diaphragm
- valve body
- valve seat
- valve
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Abstract
The utility model discloses a be favorable to improving step -down main valve of pressure adjustment precision of giving vent to anger, which comprises the following components: a valve body, be provided with inlet port and venthole on the valve body, inlet port and venthole pass through depressurization portion and link to each other, depressurization portion includes second case and disk seat, still be provided with the deflector on the valve body, be provided with the second spring between spring holder and the valve body, still be provided with out atmospheric pressure fine setting portion on the valve body, going out atmospheric pressure fine setting portion and including and first diaphragm and second diaphragm still are provided with the fine setting disk seat between first diaphragm and the second diaphragm, the micro -adjustable valve stationary ladle is drawn together and is finely tuned and first case, still is provided with first spring between first case and the valve body. The utility model discloses the height can be dispatched to simple structure, play atmospheric pressure accuracy.
Description
Technical field
This utility model relates to compressed gas decompressor field, particularly relates to a kind of blood pressure lowering main valve being conducive to improving outlet pressure degree of regulation.
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 which kind of structure pressure-reducing valve, owing to step-down ratio is big, and two kinds of form decompression performances are affected bigger by the diaphragm being provided with or spring, and the presbyopia of diaphragm, spring machining accuracy and yield deformation, both mechanical property change poor controllability in 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
Affected bigger for above-mentioned existing decompression performance by the diaphragm being provided with or spring, and the presbyopia of diaphragm, spring machining accuracy and yield deformation, both mechanical property change poor controllability in 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 blood pressure lowering main valve being conducive to improving outlet pressure degree of regulation.
nullFor solving the problems referred to above，What this utility model provided a kind of is conducive to the blood pressure lowering main valve improving outlet pressure degree of regulation to solve problem by techniques below main points: a kind of blood pressure lowering main valve being conducive to improving outlet pressure degree of regulation，Including valve body，Air inlet and venthole it is provided with on described valve body，Air inlet is connected by relief portion with venthole，Described relief portion includes the second spool and the valve seat being arranged on valve body，It is additionally provided with guide plate on described valve body，It is provided with pilot hole on described guide plate，Described second spool includes guide post portion、Decompression conical section and spring base，Described guide post portion and pilot hole matched in clearance，Decompression conical section is arranged in valve seat，The second spring for applying to play stress to spring base it is additionally provided with between spring base and valve body，The outlet pressure trimming part for applying compressive stress to the second spool it is additionally provided with on valve body；
Described outlet pressure trimming part includes primary diaphragm and secondary diaphragm, described primary diaphragm and secondary diaphragm are respectively positioned on the second spool and arrange the side in guide post portion, and plane residing for primary diaphragm and secondary diaphragm is vertical with the direction of motion of the second spool under free state, fine setting valve seat it is additionally provided with between primary diaphragm and secondary diaphragm, the front end of described fine setting valve seat is the lumen communicated with air inlet, the rear end of fine setting valve seat is surrounded epicoele by primary diaphragm and secondary diaphragm, fine setting valve seat includes fine tuning seat and the first spool, the first spring for realizing finely tuning valve base sealing it is additionally provided with between first spool and valve body, primary diaphragm and the contact of the first spool, secondary diaphragm and the second spool contact.
Concrete, the relief portion arranged is for forming the circulation passage of air inlet and venthole, and the purpose of decompression is reached by adjusting the gap between the second spool and valve seat, and the compressive stress of end, guide post portion on the second spool is realized by the adjustment in above gap by secondary diaphragm: in this utility model, lumen is owing to communicating with air inlet, when primary diaphragm applies compressive stress to the first spool, circulation passage is formed between fine tuning seat and the first spool, so, intrinsic pressure in epicoele increasing, secondary diaphragm is the pressure realization braking to the second spool in above；The first spring arranged and the second spring are respectively used to apply to realize this utility model relief portion and compressive stress blocked of fine setting valve seat under dead status.In above structure, owing to primary diaphragm and secondary diaphragm are respectively provided with elasticity, so, when intrinsic pressure change in epicoele, primary diaphragm and secondary diaphragm all can adapt to, by elastic deformation, the change that epicoele is intrinsic pressure, so, it is simple to by fine setting intrinsic pressure in epicoele is realized the control to the second spool position so that this utility model has the output of accurate outlet pressure.
Further technical scheme is:
For make the first spool and the second spool can easy motion, pressure the most of the present utility model adjusts and is provided with, on response accuracy and response speed, described relief portion and fine setting valve seat, the bearing shell coordinated with the second spool and the first spool respectively.Owing to can touch canister or metallic conduit during existing fuel gas transmission unavoidably, the preferred material of described bearing shell is bearing metal, and so, when having impurity in combustion gas, preferred bearing shell has good wearability.
It is conical seal (contact) face for ease of improving the sealing surface on relief portion and the flow rate controllability of fine setting valve seat, described relief portion and fine setting valve seat.
For making the deformation of secondary diaphragm can respond mutually with outlet pressure, improve pressure of the present utility model and communicate with venthole away from the side of primary diaphragm from constant ability, described secondary diaphragm.
For ease of processing and manufacturing of the present utility model, I& M, described air inlet, venthole and valve seat are formed by many sector holes are crossing, the most threaded on the opening in the hole at valve seat axis place have end cap, and the two ends of described second spring are respectively acting on spring base and end cap.The end cap of arrangement above also helps the original compression amount to the second spring and is adjusted, and finally reaches the purpose adjusting atmospheric pressure.
For improving the controllability of this utility model output pressure further, the air pressure in described epicoele is adjustable.
This utility model has the advantages that
This utility model simple in construction, processing and manufacturing is easy, the relief portion arranged is for forming the circulation passage of air inlet and venthole, and the purpose of decompression is reached by adjusting the gap between the second spool and valve seat, and the compressive stress of end, guide post portion on the second spool is realized by the adjustment in above gap by secondary diaphragm: in this utility model, lumen is owing to communicating with air inlet, when primary diaphragm applies compressive stress to the first spool, circulation passage is formed between fine tuning seat and the first spool, so, intrinsic pressure in epicoele increase, secondary diaphragm pressure in above realizes the braking to the second spool；The first spring arranged and the second spring are respectively used to apply to realize this utility model relief portion and compressive stress blocked of fine setting valve seat under dead status.In above structure, owing to primary diaphragm and secondary diaphragm are respectively provided with elasticity, so, when intrinsic pressure change in epicoele, primary diaphragm and secondary diaphragm all can adapt to, by elastic deformation, the change that epicoele is intrinsic pressure, so, it is simple to by fine setting intrinsic pressure in epicoele is realized the control to the second spool position so that this utility model has the output of accurate outlet pressure.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation being conducive to improving one specific embodiment of blood pressure lowering main valve of outlet pressure degree of regulation described in the utility model.
Figure acceptance of the bid note is respectively as follows: 1, valve body, and 2, air inlet, 3, spring base, 4, the first spring, 5, fine tuning seat, 6, primary diaphragm, 7, the first spool, 8, secondary diaphragm, 9, guide plate, 10, the second spool, 11, venthole, 12, end cap, 13, the second spring, 14, bearing shell, 111, epicoele, 112, lumen.
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:
As shown in Figure 1, a kind of blood pressure lowering main valve being conducive to improving outlet pressure degree of regulation, including valve body 1, air inlet 2 and venthole 11 it is provided with on described valve body 1, air inlet 2 is connected by relief portion with venthole 11, described relief portion includes the second spool 10 and the valve seat being arranged on valve body 1, it is additionally provided with guide plate 9 on described valve body 1, it is provided with pilot hole on described guide plate 9, described second spool 10 includes guide post portion, decompression conical section and spring base 3, described guide post portion and pilot hole matched in clearance, decompression conical section is arranged in valve seat, the second spring 13 for applying to play stress to spring base 3 it is additionally provided with between spring base 3 and valve body 1, the outlet pressure trimming part for applying compressive stress to the second spool 10 it is additionally provided with on valve body 1；
Described outlet pressure trimming part includes primary diaphragm 6 and secondary diaphragm 8, described primary diaphragm 6 and secondary diaphragm 8 are respectively positioned on the second spool 10 and arrange the side in guide post portion, and plane residing for primary diaphragm 6 and secondary diaphragm 8 is vertical with the direction of motion of the second spool 10 under free state, fine setting valve seat it is additionally provided with between primary diaphragm 6 and secondary diaphragm 8, the front end of described fine setting valve seat is the lumen 112 communicated with air inlet 2, the rear end of fine setting valve seat is surrounded epicoele 111 by primary diaphragm 6 and secondary diaphragm 8, fine setting valve seat includes fine tuning seat 5 and the first spool 7, the first spring 4 for realizing finely tuning valve base sealing it is additionally provided with between first spool 7 and valve body 1, primary diaphragm 6 contacts with the first spool 7, secondary diaphragm 8 contacts with the second spool 10.
In the present embodiment, the relief portion arranged is for forming air inlet 2 and the circulation passage of venthole 11, and the purpose of decompression is reached by adjusting the gap between the second spool 10 and valve seat, and the compressive stress of end, guide post portion on the second spool 10 is realized by the adjustment in above gap by secondary diaphragm 8: in this utility model, lumen 112 is owing to communicating with air inlet 2, when primary diaphragm 6 applies compressive stress to the first spool 7, circulation passage is formed between fine tuning seat 5 and the first spool 7, so, intrinsic pressure in epicoele 111 increase, secondary diaphragm 8 pressure in above realizes the braking to the second spool 10；The first spring 4 arranged and the second spring 13 are respectively used to apply to realize this utility model relief portion and compressive stress blocked of fine setting valve seat under dead status.In above structure, owing to primary diaphragm 6 and secondary diaphragm 8 are respectively provided with elasticity, so, when intrinsic pressure change in epicoele 111, primary diaphragm 6 and secondary diaphragm 8 all can adapt to, by elastic deformation, the change that epicoele 111 is intrinsic pressure, so, it is simple to by fine setting intrinsic pressure in epicoele 111 is realized the control to the second spool 10 position so that this utility model has the output of accurate outlet pressure.
Embodiment 2:
The present embodiment is further qualified on the basis of embodiment 1, as shown in Figure 1, for making the first spool 7 and the second spool 10 can easy motion, being beneficial to pressure of the present utility model and adjust response accuracy and response speed, described relief portion is provided with, on fine setting valve seat, the bearing shell 14 coordinated respectively with the second spool 10 and the first spool 7.Owing to can touch canister or metallic conduit during existing fuel gas transmission unavoidably, the preferred material of described bearing shell 14 is bearing metal, and so, when having impurity in combustion gas, preferred bearing shell 14 has good wearability.
It is conical seal (contact) face for ease of improving the sealing surface on relief portion and the flow rate controllability of fine setting valve seat, described relief portion and fine setting valve seat.
For making the deformation of secondary diaphragm 8 can respond mutually with outlet pressure, improve pressure of the present utility model and communicate with venthole 11 away from the side of primary diaphragm 6 from constant ability, described secondary diaphragm 8.
For ease of processing and manufacturing of the present utility model, I& M, described air inlet 2, venthole 11 and valve seat are formed by many sector holes are crossing, the most threaded on the opening in the hole at valve seat axis place have end cap 12, and the two ends of described second spring 13 are respectively acting on spring base 3 and end cap 12.The end cap 12 of arrangement above also helps the original compression amount to the second spring 13 and is adjusted, and finally reaches the purpose adjusting atmospheric pressure.
Embodiment 3:
The present embodiment is further qualified on the basis of above example, as it is shown in figure 1, be the controllability improving this utility model output pressure further, the air pressure in described epicoele 111 is adjustable.
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. the blood pressure lowering main valve being conducive to improving outlet pressure degree of regulation，Including valve body (1)，Air inlet (2) and venthole (11) it is provided with on described valve body (1)，Air inlet (2) is connected by relief portion with venthole (11)，Described relief portion includes the second spool (10) and the valve seat being arranged on valve body (1)，It is characterized in that，Guide plate (9) it is additionally provided with on described valve body (1)，Described guide plate is provided with pilot hole on (9)，Described second spool (10) includes guide post portion、Decompression conical section and spring base (3)，Described guide post portion and pilot hole matched in clearance，Decompression conical section is arranged in valve seat，The second spring (13) for applying to play stress to spring base (3) it is additionally provided with between spring base (3) and valve body (1)，The outlet pressure trimming part for applying compressive stress to the second spool (10) it is additionally provided with on valve body (1)；nullDescribed outlet pressure trimming part includes primary diaphragm (6) and secondary diaphragm (8)，Described primary diaphragm (6) and secondary diaphragm (8) are respectively positioned on the second spool (10) and arrange the side in guide post portion，And plane residing for primary diaphragm (6) and secondary diaphragm (8) is vertical with the direction of motion of the second spool (10) under free state，It is additionally provided with fine setting valve seat between primary diaphragm (6) and secondary diaphragm (8)，The front end of described fine setting valve seat is the lumen (112) communicated with air inlet (2)，The rear end of fine setting valve seat is surrounded epicoele (111) by primary diaphragm (6) and secondary diaphragm (8)，Fine setting valve seat includes fine tuning seat (5) and the first spool (7)，The first spring (4) for realizing finely tuning valve base sealing it is additionally provided with between first spool (7) and valve body (1)，Primary diaphragm (6) contacts with the first spool (7)，Secondary diaphragm (8) contacts with the second spool (10).
- A kind of blood pressure lowering main valve being conducive to improving outlet pressure degree of regulation the most according to claim 1, it is characterised in that be provided with, in described relief portion and fine setting valve seat, the bearing shell (14) coordinated respectively with the second spool (10) and the first spool (7).
- A kind of blood pressure lowering main valve being conducive to improving outlet pressure degree of regulation the most according to claim 1, it is characterised in that the sealing surface in described relief portion and fine setting valve seat is conical seal (contact) face.
- A kind of blood pressure lowering main valve being conducive to improving outlet pressure degree of regulation the most according to claim 1, it is characterised in that described secondary diaphragm (8) communicates with venthole (11) away from the side of primary diaphragm (6).
- A kind of blood pressure lowering main valve being conducive to improving outlet pressure degree of regulation the most according to claim 1, it is characterized in that, described air inlet (2), venthole (11) and valve seat are formed by many sector holes are crossing, the most threaded on the opening in the hole at valve seat axis place have end cap (12), and the two ends of described second spring (13) are respectively acting on spring base (3) and end cap (12).
- 6. according to a kind of blood pressure lowering main valve being conducive to improving outlet pressure degree of regulation any one of in claim 1 to 5, it is characterised in that the air pressure in described epicoele (111) is adjustable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620264206.XU CN205534435U (en) | 2016-04-01 | 2016-04-01 | Be favorable to improving step -down main valve of pressure adjustment precision of giving vent to anger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620264206.XU CN205534435U (en) | 2016-04-01 | 2016-04-01 | Be favorable to improving step -down main valve of pressure adjustment precision of giving vent to anger |
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| Publication Number | Publication Date |
|---|---|
| CN205534435U true CN205534435U (en) | 2016-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620264206.XU Expired - Fee Related CN205534435U (en) | 2016-04-01 | 2016-04-01 | Be favorable to improving step -down main valve of pressure adjustment precision of giving vent to anger |
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| Country | Link |
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| CN (1) | CN205534435U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673898A (en) * | 2016-04-01 | 2016-06-15 | 成都科盛石油科技有限公司 | Pressure-dropping main valve capable of improving outlet gas pressure regulating precision |
-
2016
- 2016-04-01 CN CN201620264206.XU patent/CN205534435U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673898A (en) * | 2016-04-01 | 2016-06-15 | 成都科盛石油科技有限公司 | Pressure-dropping main valve capable of improving outlet gas pressure regulating precision |
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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 |