CN110388489A - A kind of pressure reducer of integrated overpressure protection function - Google Patents
A kind of pressure reducer of integrated overpressure protection function Download PDFInfo
- Publication number
- CN110388489A CN110388489A CN201910807211.9A CN201910807211A CN110388489A CN 110388489 A CN110388489 A CN 110388489A CN 201910807211 A CN201910807211 A CN 201910807211A CN 110388489 A CN110388489 A CN 110388489A
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- China
- Prior art keywords
- main valve
- valve
- piston
- protection function
- overpressure protection
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- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 29
- 238000009423 ventilation Methods 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims description 7
- 210000000214 mouth Anatomy 0.000 claims 1
- 230000002159 abnormal effect Effects 0.000 abstract description 3
- 230000006870 function Effects 0.000 description 15
- 230000033001 locomotion Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009993 protective function Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
Abstract
The invention discloses a kind of pressure reducers of integrated overpressure protection function, belong to pressure reducer technical field, including valve body, main valve plug, main spool spring, piston, command spool, command valve spring, adjust bar, adjust spring, adjusting screw, main valve seat, Main valve outlet chamber, main valve back pressure cavity, main valve inlet chamber, internal ventilation channel, piston back pressure cavity, command valve outlet plenum and commander's valve chamber, the adjusting screw is mounted on the top of valve body external shell, the main valve inlet chamber is connected to commander's valve chamber by internal ventilation channel, run through on the main valve plug and offers venthole, the Main valve outlet chamber is connected with main valve back pressure cavity by the venthole on main valve plug.It is not high that the present invention solves existing pressure reducer precision, and the problem of without overpressure protection function, the damage for effectively avoiding downstream work from may cause when occurring abnormal to pressure reducer, has the characteristics that precision height, safe and reliable.
Description
Technical field
The present invention relates to pressure reducer technical field more particularly to a kind of pressure reducers of integrated overpressure protection function.
Background technique
Pressure reducer is that high pressure gas is reduced to low-pressure gas and keeps the pressure of output gas and flow basicly stable constant
Regulating device.Currently, pressure reducer is widely used in industrial high pressure gas cylinder and pipe-line system, it is the indispensability pneumatically adjusted
Accessory, main function are the pressures by gas source and are stabilized to a definite value, in order to be able to obtain stable gas source power
It is controlled for adjusting.Existing pressure reducing valve product generally can be divided into Direct Action Type and pilot-operated type, and a local resistance generally is arranged can
With the restricting element of variation, i.e., by changing orifice size, changes the kinetic energy of flow velocity and fluid, different pressure is caused to damage
It loses, to achieve the purpose that decompression.Then by the adjusting of control and regulating system, make the fluctuation of downstream pressure and spring force phase
Balance, keeps constant downstream pressure in certain error range.
Existing pressure reducer product degree of regulation is all relatively low.When upstream pressure variation span is larger, downstream pressure fluctuation
It is larger.And there is no overpressure protection function, once downstream operation irregularity, may cause pressure reducer damage, therefore need design one
The pressure reducer of the integrated overpressure protection function of kind.
Summary of the invention
The purpose of the present invention is to solve disadvantages existing in the prior art, such as: existing pressure reducer precision is not high, and
The problem of without overpressure protection function.
To achieve the goals above, present invention employs following technical solutions:
A kind of pressure reducer of integrated overpressure protection function, including valve body, main valve plug, main spool spring, piston, commander spool,
Command valve spring, adjustment bar, adjustment spring, adjusting screw, main valve seat, Main valve outlet chamber, main valve back pressure cavity, main valve inlet chamber,
Internal ventilation channel, piston back pressure cavity, command valve outlet plenum and commander's valve chamber, the adjusting screw are mounted on valve body external shell
Top, the main valve inlet chamber is connected to commander's valve chamber by internal ventilation channel, run through on the main valve plug offer it is logical
Stomata, the Main valve outlet chamber are connected with main valve back pressure cavity by the venthole on main valve plug, and the valve inner is close to finger
The position for waving valve spring is provided with gas passage, and the command valve outlet plenum is connected to by gas passage with piston back pressure cavity, institute
It states and is provided with superpressure exhaust passage on valve body.
Preferably, to be threadedly coupled between the adjusting screw and valve body external shell, and the adjusting screw can lead to
It crosses and is threadedly engaged opposite valve body up and down motion.
Preferably, piston seal there are two being symmetrically fixedly attached on the piston.
Preferably, the top fixing sleeve of the adjustment bar is connected to adjustment bar sealing ring.
Preferably, the overpressure protection function between main valve plug and piston for integrated outlet is arranged in the superpressure exhaust passage
Energy.
Preferably, the superpressure exhaust passage is forge piece of step type structure, and the tip portion of the main valve plug is located at superpressure row
The underface in gas channel.
Compared with prior art, the beneficial effects of the present invention are:
1, the present invention after actual measurement, when pressure reducer inlet upstream pressure changes in 7~35MPa pressure limit, press by outlet
Power accurately controls within the scope of 5 ± 0.5MPa.Meanwhile overpressure protection function is it is possible to prevente effectively from when downstream work occurs abnormal
The damage that pressure reducer may cause；
2, the movement of present invention setting command valve regulating piston, the Fine design area matched pass of all inlet channels
System, so that the control accuracy of outlet pressure of pressure reducer is high；
3, the present invention integrates outlet overpressure protection function by the way that superpressure exhaust passage is arranged in main valve plug and piston space.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the pressure reducer of integrated overpressure protection function proposed by the present invention；
Fig. 2 is schematic enlarged-scale view at the A of Fig. 1.
In figure: 1 valve body, 2 main valve plugs, 3 main spool springs, 4 pistons, 5 commander's spools, 6 commander's valve springs, 7 adjustment bars, 8 are adjusted
Whole spring, 9 adjusting screws, 10 piston seals, 11 adjustment bar sealing rings, 12 main valve seats, 13 Main valve outlet chambers, 14 main valve back pressures
Chamber, 15 main valve inlet chambers, 16 internal ventilation channels, 17 piston back pressure cavities, 18 superpressure exhaust passages, 19 command valve outlet plenums, 20
Command valve chamber.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
In the description of the present invention, it is to be understood that, term " on ", "lower", "front", "rear", "left", "right", "top",
The orientation or positional relationship of the instructions such as "bottom", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, merely to just
In description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with
Specific orientation construction and operation, therefore be not considered as limiting the invention.
Referring to Fig.1-2, a kind of pressure reducer of integrated overpressure protection function, including valve body 1, main valve plug 2, main spool spring 3, work
Plug 4, commander spool 5, commander valve spring 6, adjustment bar 7, adjustment spring 8, adjusting screw 9, main valve seat 12, Main valve outlet chamber 13,
Main valve back pressure cavity 14, main valve inlet chamber 15, internal ventilation channel 16, piston back pressure cavity 17, command valve outlet plenum 19 and command valve
Chamber 20, adjusting screw 9 are mounted on the top of 1 external shell of valve body, and main valve inlet chamber 15 and commander's valve chamber 20 pass through internal ventilation
Channel 16 is connected to, and through venthole is offered on main valve plug 2, Main valve outlet chamber 13 and main valve back pressure cavity 14 pass through on main valve plug 2
Venthole be connected, the inside of valve body 1 is provided with gas passage close to the position of commander's valve spring 6, and command valve outlet plenum 19 is logical
It crosses gas passage to be connected to piston back pressure cavity 17, superpressure exhaust passage 18 is provided on valve body 1, superpressure exhaust passage 18 is located at master
Between spool 2 and piston 4.
It should be noted that the direction of venthole is different, the three-dimensional structure dimensional properties of structure are taken full advantage of, are adjusted
Whole screw 9 can be slided up and down with respect to valve body 1, and pressure reducer is normally closed type, work of the main valve plug 2 in main spool spring 3 under original state
It is sealed with lower realized with main valve seat 12, adjusts bar 7 under the action of adjusting spring 8, open commander's certain aperture of spool 5, this is opened
Degree can adjust by adjusting the up and down motion of screw 9, and piston 4 can slide up and down realization in valve body 1 and be vented to superpressure
The selectivity in channel 18 is closed；
Wherein, to be threadedly coupled between adjusting screw 9 and 1 external shell of valve body, and adjusting screw 9 can be matched by screw thread
Opposite valve body 1 is closed to move up and down；
It should be noted that adjusting screw 9 can be adjusted by being threadedly engaged the connection of realization Yu valve body 1 by turn
Screw 9 realizes the up and down motion of opposite valve body 1, to realize to commander's spool 5 and adjust the adjusting of aperture between bar 7；
Wherein, piston seal 10 there are two being symmetrically fixedly attached on piston 4；
It should be noted that ensure that sealing performance of the piston 4 in 1 internal slide of valve body by piston seal 10；
Wherein, the top fixing sleeve for adjusting bar 7 is connected to adjustment bar sealing ring 11；
It should be noted that ensure that the sealing performance of adjustment 7 installation site of bar by adjusting bar sealing ring 11；
Wherein, the overpressure protection function between main valve plug 2 and piston 4 for integrated outlet is arranged in superpressure exhaust passage 18
Energy；
It should be noted that when 15 pressure superelevation of Main valve outlet chamber, piston 4 is pushed upwardly when outlet downstream occurs abnormal
Dynamic, until piston 4 and main valve plug 2 disengage, superpressure exhaust passage 18 is opened at this time, and the gas of Main valve outlet chamber 15 can pass through
Superpressure exhaust passage 18 is discharged into atmosphere, realizes overpressure protection function.After downstream pressure recovery is normal, piston 4 move downward and
Main valve plug 2 blocks superpressure exhaust passage 18 on contacting again again；
Wherein, superpressure exhaust passage 18 is forge piece of step type structure, and the tip portion of main valve plug 2 is located at superpressure exhaust passage 18
Underface；
It should be noted that can realize superpressure by the part on 2 top of main valve plug when main valve plug 2 is close to piston 4
The ventilation of superpressure exhaust passage 18 also may be implemented when main valve plug 2 is detached from piston 4 in the closing of exhaust passage 18.
In the present invention, when user uses the device: pressure reducer is normally closed type, and main valve plug 2 is in main valve bullet under original state
It realizes and seals with main valve seat 12 under the action of spring 3, adjust bar 7 under the action of adjusting spring 8, open commander's spool 5 and centainly open
Degree, the aperture can adjust by adjusting the up and down motion of screw 9.When main valve inlet chamber 13 leads to high pressure, high pressure gas passes through
1 internal ventilation channel 16 of valve body reaches commander's valve chamber 20, enters command valve outlet plenum 19 further through the aperture of command valve, then pass through
Gas passage enters piston back pressure cavity 17, and piston 4 is pushed to move downward, and then pushes main valve open, gas from valve export into
Enter downstream.Superpressure exhaust passage 18 between piston 4 and main valve plug 2 is blocked, and 13 gas of Main valve outlet chamber can not be discharged.
When main valve inlet 13 pressure rise of chamber, 20 pressure rise of valve chamber is commanded, commander's spool 5 is increased by upward power
Add, the loading force of adjustment spring 8 is overcome to move upwards, the aperture of command valve reduces, command valve outlet plenum 19 and piston back pressure cavity
17 pressure reduction, piston 4 are reduced by downward opening force, and stress balance is broken, and piston 4 moves upwards, main valve plug 2 with
Move upwards, main valve aperture reduce, guarantee 15 pressure of Main valve outlet chamber stabilization.Conversely, working as 13 pressure drop of main valve inlet chamber
When low, command 20 pressure reduction of valve chamber, commander's spool 5 is reduced by upward power, under the loading force effect of adjustment spring 8 to
The aperture of lower movement, command valve increases, and the pressure rise of command valve outlet plenum 19 and piston back pressure cavity 17, piston 4 is by downward
Opening force increase, stress balance is broken, and piston 4 moves downward, and main valve plug 2 moves downward therewith, and main valve aperture increases, and protects
Demonstrate,prove the stabilization of 15 pressure of Main valve outlet chamber.
When outlet downstream appearance exception, 15 pressure superelevation of Main valve outlet chamber, piston 4 is pushed upwardly, until 4 He of piston
Main valve plug 2 disengages, and superpressure exhaust passage 18 is opened at this time, and the gas of Main valve outlet chamber 15 can pass through superpressure exhaust passage 18
It is discharged into atmosphere, realizes overpressure protection function.After downstream pressure recovery is normal, piston 4 is moved downward to be contacted again with main valve plug 2
On, superpressure exhaust passage 18 is blocked again.
The present invention takes full advantage of the three-dimensional knot of structure by the way that the venthole in multiple and different directions is arranged inside valve body 1
Structure dimensional properties realize the cavity of internal multiple and different pressure.And then pass through the aperture regulation piston back pressure cavity 17 of command valve
Pressure, so that the aperture quick response of main valve, the Fine design area matched relationship of all inlet channels, so that pressure reducer
Control accuracy of outlet pressure is high.And by the way that superpressure exhaust passage 18 is arranged between main valve plug 2 and piston 4, superpressure guarantor is realized
Protective function.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (6)
1. a kind of pressure reducer of integrated overpressure protection function, including valve body (1), main valve plug (2), main spool spring (3), piston (4),
Commander spool (5), commander valve spring (6), adjustment bar (7), adjustment spring (8), adjusting screw (9), main valve seat (12), main valve go out
Oral cavity (13), main valve back pressure cavity (14), main valve inlet chamber (15), internal ventilation channel (16), piston back pressure cavity (17), command valve
Outlet plenum (19) and commander valve chamber (20), which is characterized in that the adjusting screw (9) is mounted on the top of valve body (1) external shell
Portion, the main valve inlet chamber (15) and commander valve chamber (20) are connected to by internal ventilation channel (16), are passed through on the main valve plug (2)
It wears and offers venthole, the Main valve outlet chamber (13) is connected with main valve back pressure cavity (14) by the venthole on main valve plug (2)
Logical, the internal position close to commander valve spring (6) of the valve body (1) is provided with gas passage, the command valve outlet plenum (19)
It is connected to by gas passage with piston back pressure cavity (17), is provided with superpressure exhaust passage (18) on the valve body (1).
2. a kind of pressure reducer of integrated overpressure protection function according to claim 1, which is characterized in that the adjusting screw
(9) to be threadedly coupled between valve body (1) external shell, and the adjusting screw (9) can be by being threadedly engaged opposite valve body
(1) it moves up and down.
3. a kind of pressure reducer of integrated overpressure protection function according to claim 1, which is characterized in that the piston (4)
On be symmetrically fixedly attached there are two piston seal (10).
4. a kind of pressure reducer of integrated overpressure protection function according to claim 1, which is characterized in that the adjustment bar
(7) top fixing sleeve is connected to adjustment bar sealing ring (11).
5. a kind of pressure reducer of integrated overpressure protection function according to claim 1, which is characterized in that the superpressure exhaust
The overpressure protection function for integrated outlet is arranged between main valve plug (2) and piston (4) in channel (18).
6. a kind of pressure reducer of integrated overpressure protection function according to claim 1, which is characterized in that the superpressure exhaust
Channel (18) is forge piece of step type structure, and the tip portion of the main valve plug (2) is located at the underface of superpressure exhaust passage (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910807211.9A CN110388489A (en) | 2019-08-29 | 2019-08-29 | A kind of pressure reducer of integrated overpressure protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910807211.9A CN110388489A (en) | 2019-08-29 | 2019-08-29 | A kind of pressure reducer of integrated overpressure protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110388489A true CN110388489A (en) | 2019-10-29 |
Family
ID=68289478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910807211.9A Pending CN110388489A (en) | 2019-08-29 | 2019-08-29 | A kind of pressure reducer of integrated overpressure protection function |
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| Country | Link |
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| CN (1) | CN110388489A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111216926A (en) * | 2019-11-29 | 2020-06-02 | 天津航宇卓然科技有限公司 | Cold air propulsion system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2264283Y (en) * | 1996-05-13 | 1997-10-08 | 杨永祥 | Guide piston pressure reducing valve |
| CN106870784A (en) * | 2015-12-11 | 2017-06-20 | 李福来 | Guide's balanced high pressure pneumatic proportional pressure-reducing valve |
| CN206617631U (en) * | 2017-03-10 | 2017-11-07 | 浙江超众阀门制造有限公司 | HTHP guide piston pressure reducing valve |
| CN107894788A (en) * | 2017-11-20 | 2018-04-10 | 北京宇航系统工程研究所 | A kind of high-precision continuously adjustabe electronic control pressure reducing device |
| CN208237165U (en) * | 2018-04-28 | 2018-12-14 | 河南航天液压气动技术有限公司 | Guide's pressure reducing valve |
| CN210423863U (en) * | 2019-08-29 | 2020-04-28 | 天津航宇卓然科技有限公司 | Pressure reducer integrating overpressure protection function |
-
2019
- 2019-08-29 CN CN201910807211.9A patent/CN110388489A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2264283Y (en) * | 1996-05-13 | 1997-10-08 | 杨永祥 | Guide piston pressure reducing valve |
| CN106870784A (en) * | 2015-12-11 | 2017-06-20 | 李福来 | Guide's balanced high pressure pneumatic proportional pressure-reducing valve |
| CN206617631U (en) * | 2017-03-10 | 2017-11-07 | 浙江超众阀门制造有限公司 | HTHP guide piston pressure reducing valve |
| CN107894788A (en) * | 2017-11-20 | 2018-04-10 | 北京宇航系统工程研究所 | A kind of high-precision continuously adjustabe electronic control pressure reducing device |
| CN208237165U (en) * | 2018-04-28 | 2018-12-14 | 河南航天液压气动技术有限公司 | Guide's pressure reducing valve |
| CN210423863U (en) * | 2019-08-29 | 2020-04-28 | 天津航宇卓然科技有限公司 | Pressure reducer integrating overpressure protection function |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111216926A (en) * | 2019-11-29 | 2020-06-02 | 天津航宇卓然科技有限公司 | Cold air propulsion system |
| CN111216926B (en) * | 2019-11-29 | 2021-04-06 | 天津航宇卓然科技有限公司 | Cold air propulsion system |
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