CN105587909B - A kind of multistage pressure leading gas pressure reducer - Google Patents
A kind of multistage pressure leading gas pressure reducer Download PDFInfo
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- CN105587909B CN105587909B CN201410557378.1A CN201410557378A CN105587909B CN 105587909 B CN105587909 B CN 105587909B CN 201410557378 A CN201410557378 A CN 201410557378A CN 105587909 B CN105587909 B CN 105587909B
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- pressure
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- spool
- valve seat
- gas circuit
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Abstract
The invention discloses a kind of multistage pressure leading gas pressure reducers, a kind of multistage pressure leading gas pressure reducer, including shell, one upper lateral part of shell installs first handle, the first pressure spring is installed in the downside of first handle, and case inside is located at the first pressure spring lower part installation diaphragm, and mandril is installed in the lower part of diaphragm, case inside, which is located at mandril, opens up flow cavity, and the first valve seat is installed in the lower part that case inside is located at mandril.The present invention is ultralow pressure 0.04MPa ± 3% using pressure, and precision is higher, and the success or failure of system have second depressurized decision, and general pressure reducer is difficult to realize keep the stability of outlet pressure under the conditions ofs harsh environment temperature, vibration etc..
Description
Technical field
The present invention relates to a kind of gas pressure reducer, specifically a kind of multistage pressure leading gas pressure reducer.
Background technique
With the development that deepens continuously of China Aerospace technology, valve manufacture industry has also obtained unprecedented development.In various types
Number pipe-line system mesohigh gas source and demand that low pressure uses is increasing, that is to say, that the high pressure gas that will be come out in high pressure gas cylinder
Body meets the requirement of ultralow pressure, small amount of fuel system after pressure reducer depressurizes.And pressure reducer is required to can be realized
Under harsh Space-Work environment, by the pressure of system media, stability of flow in certain accuracy rating.For high pressure
The gas pressure reducer of 40MPa is applied in system, and two independent pressure reducers of typically connecting realize secondary pressure function, is accounted for
Larger with space, control precision is lower, and appearance is big and stupid.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the defects of the prior art, provide a kind of multistage pressure leading gas
Pressure reducer.
In order to solve the above-mentioned technical problems, the present invention provides the following technical solutions:
A kind of multistage pressure leading gas pressure reducer of the present invention, including shell, one upper lateral part of shell install first handle,
The first pressure spring is installed in the downside of first handle, and case inside is located at the first pressure spring lower part and installs diaphragm, under diaphragm
Mandril is installed in portion, and case inside, which is located at mandril, opens up flow cavity, and the first valve seat is installed in the lower part that case inside is located at mandril, the
The first spool is installed in the inside of one valve seat, and another upper lateral part of shell installs second handle, and the lower part installation second of second handle is adjusted
Pressing spring, case inside are located at the lower part installation baffle of the second pressure spring, and film is installed in the lower part that case inside is located at baffle
Piece, case inside are located at the lower part setting nozzle of upper diaphragm, and enclosure interior is located at nozzle side and opens up feedback duct, case inside
Lower diaphragm is set positioned at nozzle lower part, case inside is located at lower diaphragm lower part and the second valve seat, the inside installation of the second valve seat is arranged
Second spool, lower part of the housing are located at the first valve seat side and open up level-one arrival end, and level-one arrival end is communicated with the first spool, shell
Lower part opens up air channel between the first spool and the second spool, and lower part of the housing is located at the second spool side and opens up secondary exit port
End, secondary exit port end is communicated with the second spool.
In order to further realize the purpose of the present invention, following technical scheme can also be used: first valve seat and first
First balanced seal circle is set between spool.Second balanced seal circle is set between second valve seat and the second spool.
The present invention has the advantages that the present invention is ultralow pressure 0.04MPa ± 3% using pressure, and precision is higher, system
Success or failure have second depressurized decision, general pressure reducer is difficult to realize keep out under the conditions ofs harsh environment temperature, vibration etc.
The stability of mouth pressure.The invention second-level inner guide balance type structure increases than level-one direct acting balance type structure as shown in Figure 1
Nozzle, serial number, the nozzle of fixed orifice composition and baffle highly sensitive amplifying element.When between nozzle and baffle away from
It when from small variation occurs, will make air chamber pressure that apparent variation occur, after upper diaphragm and lower diaphragm experience pressure, lead to
Crossing feedback duct causes diaphragm and lower diaphragm to have biggish displacement, to go moving up and down for the second spool of control, makes the second valve
Core is opened big or is turned down, and the sensitivity to spool control, intrinsic higher regulation precision are improved.This internal pilot balanced type knot
Structure, when admission pressure variation is ± 0.1MPa, outlet pressure changes less than 0.5%；When rate of discharge is in 5%~100% model
When enclosing interior fluctuation, outlet pressure changes less than 0.5%.And the pressure reducer outlet pressure variation of conventional direct dynamic structure is greater than
5%~10%, therefore, such present invention is a kind of high-accuracy type pressure reducer.The present invention also have it is simple for structure it is compact, manufacture at
This is cheap and uses easy advantage.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the structural diagram of the present invention.
Mark explanation: 12 first pressure spring of first handle, 3 diaphragm, 4 mandril, 5 first valve seat, 6 first spool 7 stream
Dynamic 8 first balanced seal circle of chamber, 9 air channel, 10 fixed orifice, 11 12 second pressure spring of second handle, 13 baffle 14
15 nozzle 16 of upper diaphragm feeds back lower 18 second valve seat of diaphragm, 19 second spool, the 20 second balanced seal circle 21 1 in duct 17
22 secondary exit port end of grade arrival end, 23 shell.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
A kind of multistage pressure leading gas pressure reducer, as shown in Figure 1, including shell 23, the installation of 23 1 upper lateral part of shell
First handle 1, the downside of first handle 1 install the first pressure spring 2, are located at 2 lower part of the first pressure spring on the inside of shell 23 and pacify
Diaphragm 3 is filled, the lower part of diaphragm 3 installs mandril 4, is located at mandril 4 on the inside of shell 23 and opens up flow cavity 7, be located on the inside of shell 23
The first valve seat 5 is installed in the lower part of mandril 4, and the first spool 6 is installed in the inside of the first valve seat 5, another upper lateral part of shell 23 installation the
Two handles 11, the lower part of second handle 11 are installed the second pressure spring 12, are located under the second pressure spring 12 on the inside of shell 23
Baffle 13 is installed in portion, and upper diaphragm 14 is installed in the lower part that baffle 13 is located on the inside of shell 23, is located at upper diaphragm 14 on the inside of shell 23
Nozzle 15 is arranged in lower part, and shell 23 is internally located at 15 side of nozzle and opens up feedback duct 16, is located under nozzle 15 on the inside of shell 23
Lower diaphragm 17 is arranged in portion, lower 17 lower part of diaphragm is located on the inside of shell 23, the second valve seat 18, the inside installation of the second valve seat 18 is arranged
Second spool 19,23 lower part of shell are located at 5 side of the first valve seat and open up level-one arrival end 21, level-one arrival end 21 and the first spool
6 communicate, and 23 lower part of shell opens up air channel 9 between the first spool 6 and the second spool 19, and 23 lower part of shell is located at the second valve
19 side of core opens up secondary exit port end 22, and secondary exit port end 22 is communicated with the second spool 19.First valve seat 5 and the first spool
First balanced seal circle 8 is set between 6.Second balanced seal circle 20 is set between second valve seat 18 and the second spool 19.
At work, level-one arrival end 21 is passed through the bleed pressure of P1=40MPa to the present invention, rotational handle 1 slowly, adjusts
Pressing spring 2 is compressed, and pushes mandril 4 to move downward spool 6 and 5 sealing surfaces of lifting off a seat are to certain Lift, high pressure gas
When body flows through the gap between 5 sealing surface of the first spool 6 and the first valve seat, a part of pressure energy, the pressure drop of gas are had lost
As low as achieving the purpose that decompression.
Then, the gas flow flow cavity 7 after pressure reduction, diaphragm 3 experience pressure, at the same with 2 phase of the first pressure spring
Balance, achievees the purpose that pressure stabilizing.Meanwhile the gas after pressure reduction is after 6 centre bore of the first spool reaches 6 lower part of the first spool
The counteracted by pressure a part at 8 both ends of the first balanced seal circle, reduces and changes the inclined of gas outflow pressure because of gas pressure fluctuation
Difference achievees the purpose that equalization vent pressure, and then improves the precision of voltage regulation.
After the gas depressurized by the first spool 6 is by entering air channel 9, it is divided into two-way: all the way through the second spool 19
Gap to secondary exit port end 22 between the second valve seat 18；Another way enters intermediate gas through fixed orifice fixed orifice 10
Room feeds back to lower chamber through nozzle 15, baffle 13 and feedback duct 16.When rotating clockwise second handle 11, the second pressure regulation bullet
Spring 12 is compressed to certain position, and making the spacing of nozzle 15 and baffle 13, the second spool 19 enters work shape in working range
State.The pressure of middle gas chamber increases with the reduction of spacing, lower diaphragm 17 experience pressure and push the second spool 19 downward away from
The certain Lift of second valve seat, 18 sealing surface, low-pressure gas flow through the seam between 18 sealing surface of the second spool 19 and the second valve seat
When gap, a part of pressure energy is had lost, the pressure reduction of gas achievees the purpose that decompression to lower degree.
Then, the gas after decompression arrives upper chamber through feedback duct 16 feedback, and upper diaphragm 14 experiences pressure and the second pressure regulation
The spring force of spring 12 balances each other, and achievees the purpose that pressure stabilizing.When input gas pressure fluctuates, nozzle 15 and baffle 13 are leaned on
The amplification and force balance principle stabilization of export pressure of amplifying element remain unchanged.If 21 gas pressure of level-one arrival end is instantaneous
It increases, 22 gas pressure of secondary exit port end also increases.The raising of 22 gas pressure of secondary exit port end will make air chamber pressure also successive
It increases, and baffle 13 is made to move up a slight distance in company with upper diaphragm 14, and air chamber pressure is caused significantly to decline, make the second valve
Core 19 is moved up in company with lower diaphragm 17, until the oral area of the second spool 19 turns down, declines 22 pressure of secondary exit port end, and steady
It is fixed to arrive originally numerically.Similarly, if secondary exit port end 22 instantaneously declines, the amplification through nozzle 15, baffle 13 can also cause gas
Chamber pressure significantly increases, and moves down the second spool 19, and the oral area of the second spool 19 is opened greatly, and 22 pressure of secondary exit port end is made
Rise, and be stabilized to original numerically, achievees the purpose that pressure stabilizing.It is rung in short, air chamber pressure forms a closed loop by feedback duct
It answers, to stablize the size of 22 gas pressure of secondary exit port end.
The present invention is ultralow pressure 0.04MPa ± 3% using pressure, and precision is higher, and the success or failure of system have second depressurized
It determines, general pressure reducer is difficult to realize keep the stability of outlet pressure under the conditions ofs harsh environment temperature, vibration etc..By
The invention second-level inner guide balance type structure known to Fig. 1 increases nozzle 15 than level-one direct acting balance type structure, serial number 13, consolidates
Determine the nozzle of the composition of throttle orifice 10 and the highly sensitive amplifying element of baffle.When the generation of the distance between nozzle and baffle is small
When variation, it will make air chamber pressure that apparent variation occur and pass through feedback hole after upper diaphragm 14 and lower diaphragm 17 experience pressure
Road 16 causes diaphragm 14 and lower diaphragm 17 to have biggish displacement, to go moving up and down for the second spool 19 of control, makes the second valve
Core 19 is opened big or is turned down, and the sensitivity to spool control, intrinsic higher regulation precision are improved.This internal pilot balanced type
Structure, when admission pressure variation is ± 0.1MPa, outlet pressure changes less than 0.5%；When rate of discharge is 5%~100%
In range when fluctuation, outlet pressure changes less than 0.5%.And the pressure reducer outlet pressure variation of conventional direct dynamic structure is greater than
5%~10%, therefore, such present invention is a kind of high-accuracy type pressure reducer.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (1)
1. a kind of multistage pressure leading gas pressure reducer, it is characterised in that: including shell (23), (23) one upper lateral part of shell peace
It fills first handle (1), the first pressure spring (2) are installed in the downside of first handle (1), and the first pressure regulation bullet is located on the inside of shell (23)
Diaphragm (3) are installed in spring (2) lower part, and mandril (4) are installed in the lower part of diaphragm (3), are located at mandril (4) on the inside of shell (23) and open up stream
The first valve seat (5) are installed in dynamic chamber (7), the lower part that mandril (4) are located on the inside of shell (23), the inside installation of the first valve seat (5) the
One spool (6), another upper lateral part installation second handle (11) of shell (23), the second pressure regulation bullet is installed in the lower part of second handle (11)
Spring (12), the lower part that shell (23) inside is located at the second pressure spring (12) install baffle (13), are located on the inside of shell (23) and keep off
Upper diaphragm (14) are installed in the lower part of plate (13), and nozzle (15) are arranged in the lower part that upper diaphragm (14) are located on the inside of shell (23), shell
(23) inside opens up feedback duct (16) positioned at nozzle (15) side, is located at nozzle (15) lower part on the inside of shell (23) and lower film is arranged
Piece (17), shell (23) inside are located at lower diaphragm (17) lower part setting the second valve seat (18), the inside installation of the second valve seat (18)
Second spool (19), shell (23) lower part are located at the first valve seat (5) side and open up level-one arrival end (21), level-one arrival end (21)
It being communicated with the first spool (6), shell (23) lower part opens up air channel (9) between the first spool (6) and the second spool (19),
Shell (23) lower part is located at the second spool (19) side and opens up secondary exit port end (22), secondary exit port end (22) and the second spool
(19) it communicates, the first valve seat (5) has prolonging along the vertical direction for the lower part for installing the first spool (6) top and mandril (4)
The pilot hole stretched, the gas circuit also flowed through with supplied gas in the first valve seat (5), pilot hole are provided separately with gas circuit；The guiding
Hole includes major diameter section and path section, and major diameter section and the first spool (6) tip clearance cooperate, the top of the first spool (6) and mandril
(4) lower part is oriented in path section and is engaged；Gap between major diameter section and the first spool (6) is connected to gas circuit, described
Gas circuit are as follows: the right level that the upper end of left horizontal gas circuit, major diameter section that the upper end of major diameter section extends to form to the left extends to form to the right
The vertical gas circuit in the left side to be formed is upwardly extended in the middle part of gas circuit, Zuo Shuiping gas circuit, right horizontal gas circuit middle part upwardly extends the right side to be formed and erects
Straight gas circuit；After the gas depressurized by the first spool enters air channel (9), be divided into two-way: all the way through the second spool (19) with
Gap to secondary exit port end (22) between second valve seat (18)；Another way enters middle gas chamber, warp through fixed orifice (10)
Nozzle (15), baffle (13) and feedback duct (16) feed back to lower chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410557378.1A CN105587909B (en) | 2014-10-16 | 2014-10-16 | A kind of multistage pressure leading gas pressure reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410557378.1A CN105587909B (en) | 2014-10-16 | 2014-10-16 | A kind of multistage pressure leading gas pressure reducer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105587909A CN105587909A (en) | 2016-05-18 |
| CN105587909B true CN105587909B (en) | 2019-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410557378.1A Active CN105587909B (en) | 2014-10-16 | 2014-10-16 | A kind of multistage pressure leading gas pressure reducer |
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| CN (1) | CN105587909B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107514320B (en) * | 2017-07-10 | 2019-05-24 | 北京控制工程研究所 | A kind of micromass culture modular structure based on high pressure frontier technology |
| CN109538798B (en) * | 2018-11-29 | 2020-08-14 | 河南航天液压气动技术有限公司 | Pressure reducing valve |
| CN111219512B (en) * | 2019-05-27 | 2021-09-03 | 绍兴天喆能源科技有限公司 | Pressure reducing and stabilizing valve applied to preparation of fuel cell |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2125762U (en) * | 1992-05-30 | 1992-12-23 | 天津市减压器厂 | Two-stage pressure reducer for air pipe line |
| CN202867968U (en) * | 2012-10-12 | 2013-04-10 | 宁波亚德客自动化工业有限公司 | Accurate pressure regulating valve |
| CN203082301U (en) * | 2012-12-17 | 2013-07-24 | 中冶焊接科技有限公司 | Gas pressure reducer for mass flow |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101446363B (en) * | 2008-12-29 | 2011-01-26 | 北京航天万源煤化工工程技术有限公司 | Metallic film type reducing valve |
| CN202302161U (en) * | 2011-11-11 | 2012-07-04 | 宁波市华益气动工程有限公司 | Pressure-regulating and pressure-stabilizing mechanism of pilot-type pressure reducing valve |
| US9091360B2 (en) * | 2012-04-09 | 2015-07-28 | II Lawrence L. Frahm | Pressure limiting valve and alternative method for testing a backflow preventer using the same |
| CN204176068U (en) * | 2014-10-16 | 2015-02-25 | 河南航天液压气动技术有限公司 | A kind of multistage pressure leading gas decompressor |
-
2014
- 2014-10-16 CN CN201410557378.1A patent/CN105587909B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2125762U (en) * | 1992-05-30 | 1992-12-23 | 天津市减压器厂 | Two-stage pressure reducer for air pipe line |
| CN202867968U (en) * | 2012-10-12 | 2013-04-10 | 宁波亚德客自动化工业有限公司 | Accurate pressure regulating valve |
| CN203082301U (en) * | 2012-12-17 | 2013-07-24 | 中冶焊接科技有限公司 | Gas pressure reducer for mass flow |
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| Publication number | Publication date |
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| CN105587909A (en) | 2016-05-18 |
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