CN207178805U - A kind of high-precision absolute pressure pressure reducer - Google Patents
A kind of high-precision absolute pressure pressure reducer Download PDFInfo
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- CN207178805U CN207178805U CN201720952233.0U CN201720952233U CN207178805U CN 207178805 U CN207178805 U CN 207178805U CN 201720952233 U CN201720952233 U CN 201720952233U CN 207178805 U CN207178805 U CN 207178805U
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Abstract
A kind of high-precision absolute pressure pressure reducer of two-stage is the utility model is related to, its agent structure is divided into two-stage, and one-level is positive plunger-type structure, and two level is positive big diaphragm type structure.Its function is decompression and voltage stabilizing.When high-pressure gas flow crosses pressure reducer opening and closing element（Valve assembly）During the narrow gap formed between valve seat, gas is throttled, to realize the function of decompression.Pressure reducer constantly changes with flow system flow, by the regulation of valve opening, to realize Stress control.
Description
Technical field
A kind of high-precision absolute pressure pressure reducer is the utility model is related to, belongs to valve type field.
Background technology
Pressure reducer extensive use in various pneumatic systems.With the continuous development of technology, input pressure is high, flow span
Big and output pressure precision height is the important development direction of pressure reducer class product from now on, R ＆ D design high accuracy pressure reducer have compared with
Wide market background.
Pressure reducer of the prior art, because diaphragm sensitive area is smaller, cause output pressure precision relatively low.
The content of the invention
The utility model is directed to above-mentioned problems of the prior art, there is provided a kind of high-precision absolute pressure pressure reducer, solves
The problem of pressure reducer output pressure is low in the prior art, precision is low.
The utility model technical solution：
A kind of high-precision absolute pressure pressure reducer, including the one-level housing in hollow structure and the secondary shell in hollow structure, one
Connected between level housing and secondary shell；Described one-level housing sets air inlet ozzle, air inlet ozzle with one-level housing
Chamber connects, and described secondary shell sets gas outlet ozzle, and gas outlet ozzle connects with secondary shell inner chamber；Described one-level shell
The inner chamber of body, which is slided, sets one-level valve, and the bottom of described one-level housing sets adjustment swivel nut, one-level valve and adjustment swivel nut
Between set one-level main spring, one-level valve and adjustment swivel nut between form atmosphere chamber, shape between one-level valve and one-level housing
Into feedback cavity；The inner chamber of described secondary shell, which is slided, sets two level valve, and secondary bullet is set between two level valve and secondary shell
Spring, the bottom of described secondary shell set chassis, and the top on chassis sets diaphragm, and diaphragm offsets with two level valve, chassis
Bottom sets adjusting screw, and two level main spring is set between adjusting screw and diaphragm, and feedback is formed between two level valve and diaphragm
Chamber, atmosphere chamber is formed between chassis and diaphragm.
Described air inlet ozzle is provided with filter.
O-ring seal I is provided between described one-level housing and one-level valve, is provided between one-level housing and adjustment swivel nut
O-ring seal II.
The outer cover of described adjusting screw is equipped with nut, and O-ring seal III is provided between nut and chassis.
O-ring seal IV is provided between described secondary shell and two level valve.
The beneficial effect of the utility model compared with prior art：
The utility model gases at high pressure are depressurized by being formed at one-level valve, after decompression gas feedback to one-level low pressure chamber,
And act on one-level valve and balanced each other with one-level main spring pretightning force, one-level is exported steady pressure.One-level exports voltage stabilizing gas
Body is by forming secondary pressure at two level valve, by gas feedback after decompression to low pressure chamber, low-pressure gas acts on diaphragm unit
It is upper to be balanced each other with two level main spring pretightning force, the ultralow steady pressure of final output.When outlet pressure because inlet pressure change and
When producing change, because the larger reaction of diaphragm unit sensitive area is sensitive, the change that valve opening changes spring force can be adjusted immediately
Change, it is achieved that pressure reducer reaches high-precision requirement under conditions of low output pressure.
Housing, cushion rubber and adjustment swivel nut form sealing, make one-level main spring cavity and isolated from atmosphere, avoid ambient pressure
The output pressure changed for pressure reducer has an impact.
Nut, cushion rubber and chassis form sealing, make two level main spring cavity and isolated from atmosphere, avoid the change of ambient pressure
Had an impact for the output pressure of pressure reducer.
Brief description of the drawings
Fig. 1 is the utility model structure diagram.
In figure, 1, one-level housing, 2, one-level valve, 3, filter, 4, air inlet ozzle, 5, cushion rubber I, 6, cushion rubber II, 7,
One-level main spring, 8, adjustment swivel nut, 9, nut, 10, cushion rubber III, 11, adjusting screw, 12, chassis, 13, two level main spring, 14,
Diaphragm group, 15, cushion rubber IV, 16, gas outlet ozzle, 17, two level valve, 18, auxiliary spring, 19, secondary shell.
Embodiment
Referring to the drawings, in conjunction with specific embodiments, the utility model is described in detail.
As illustrated, a kind of high-precision absolute pressure pressure reducer, including in the one-level housing 1 of hollow structure and two in hollow structure
Level housing 19, is connected between one-level housing and secondary shell；Described one-level housing sets air inlet ozzle 4, air inlet ozzle
Provided with filter 3, air inlet ozzle connects with one-level housing cavity, and described secondary shell sets gas outlet ozzle 16, outlet
Mouth ozzle connects with secondary shell inner chamber；The inner chamber of described one-level housing, which is slided, sets one-level valve 2, described one-level housing
Bottom adjustment swivel nut 8 is set, one-level main spring 7, one-level valve and adjustment swivel nut are set between one-level valve and adjustment swivel nut
Between form atmosphere chamber, form feedback cavity between one-level valve and one-level housing；The inner chamber of described secondary shell, which is slided, to be set
Two level valve 17, auxiliary spring 18 is set between two level valve and secondary shell, the bottom of described secondary shell sets chassis 12,
The top on chassis sets diaphragm 14, and diaphragm offsets with two level valve, and the bottom on chassis sets adjusting screw 11, adjusting screw and film
Two level main spring 13 is set between piece, feedback cavity is formed between two level valve and diaphragm, atmosphere chamber is formed between chassis and diaphragm.
O-ring seal I is provided between described one-level housing and one-level valve, is provided between one-level housing and adjustment swivel nut
O-ring seal II, one-level housing 1, O-ring seal II6 and adjustment swivel nut 8 form sealing, make one-level main spring cavity and big air bound
From to avoid influence of the change of ambient pressure for the output pressure of pressure reducer.
The outer cover of described adjusting screw is equipped with nut, and O-ring seal III is provided between nut and chassis；Described two
O-ring seal IV is provided between level housing and two level valve；Nut 9, cushion rubber III10 and chassis 12 form sealing, make the main bullet of two level
Spring cavity and isolated from atmosphere, to avoid influence of the change of ambient pressure for the output pressure of pressure reducer.
In given inlet pressure P1, turn adjustment swivel nut 8, make that one-level main spring 7 is compressed, and spring-force driven dual is in one-level
On valve 2, one-level valve 2 is set to open certain altitude, gases at high pressure are sealed by one-level valve 2 and one-level housing 1 between sword side
The ring-shaped throttling area of formation, gas is throttled after decompression and establishes outlet pressure P2 into low pressure chamber, and exports metered flow gas
Body, and stable one-level output pressure.Then one-level output pressure enters at two level valve, and now turn adjusting screw 11, makes
Two level main spring 13 is compressed, and spring-force driven dual makes two level valve 17 open certain altitude, gases at high pressure on two level valve 17
By the ring-shaped throttling area formed between two level valve 17 and the sword side of secondary shell 19, enter low pressure chamber after being throttled decompression,
And act on diaphragm unit 14, balanced each other with the power of two level main spring 13, export steady pressure.
A kind of big diaphragm pressure reducer of described absolute pressure, operating pressure 35MPa~4MPa, outlet pressure 0.1MPa ~ 0.15MPa
（Absolute pressure）, flow 0.2L/s ~ 1.5L/s.
The technical principle described above for being specific embodiment of the utility model and being used, it is any to be based on the utility model
Equivalent transformation on the basis of technical scheme, is belonged within the scope of protection of the utility model.
The utility model unspecified part is known to the skilled person technology.
Claims (5)
1. a kind of high-precision absolute pressure pressure reducer, it is characterised in that including the one-level housing in hollow structure and the two level in hollow structure
Housing, connected between one-level housing and secondary shell；Described one-level housing sets air inlet ozzle, air inlet ozzle and one-level
Housing cavity connects, and described secondary shell sets gas outlet ozzle, and gas outlet ozzle connects with secondary shell inner chamber；Described
The inner chamber of one-level housing, which is slided, sets one-level valve, and the bottom of described one-level housing sets adjustment swivel nut, and one-level valve is with adjusting
One-level main spring is set between whole swivel nut, atmosphere chamber, one-level valve and one-level housing are formed between one-level valve and adjustment swivel nut
Between form feedback cavity；The inner chamber of described secondary shell, which is slided, sets two level valve, is set between two level valve and secondary shell
Auxiliary spring is put, the bottom of described secondary shell sets chassis, and the top on chassis sets diaphragm, and diaphragm offsets with two level valve,
The bottom on chassis sets adjusting screw, and two level main spring, shape between two level valve and diaphragm are set between adjusting screw and diaphragm
Into feedback cavity, atmosphere chamber is formed between chassis and diaphragm.
2. a kind of high-precision absolute pressure pressure reducer according to claim 1, it is characterised in that described air inlet ozzle was provided with
Filter.
3. a kind of high-precision absolute pressure pressure reducer according to claim 1, it is characterised in that described one-level housing is lived with one-level
O-ring seal I is provided between door, O-ring seal II is provided between one-level housing and adjustment swivel nut.
A kind of 4. high-precision absolute pressure pressure reducer according to claim 1, it is characterised in that the outer cover of described adjusting screw
Equipped with nut, O-ring seal III is provided between nut and chassis.
5. a kind of high-precision absolute pressure pressure reducer according to claim 1, it is characterised in that described secondary shell is lived with two level
O-ring seal IV is provided between door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720952233.0U CN207178805U (en) | 2017-08-02 | 2017-08-02 | A kind of high-precision absolute pressure pressure reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720952233.0U CN207178805U (en) | 2017-08-02 | 2017-08-02 | A kind of high-precision absolute pressure pressure reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207178805U true CN207178805U (en) | 2018-04-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720952233.0U Active CN207178805U (en) | 2017-08-02 | 2017-08-02 | A kind of high-precision absolute pressure pressure reducer |
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| Country | Link |
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| CN (1) | CN207178805U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110748679A (en) * | 2019-11-18 | 2020-02-04 | 沈阳航天新光集团有限公司 | Pressure reducer with pressure relief function |
| CN113685593A (en) * | 2021-08-20 | 2021-11-23 | 沈阳航天新光集团有限公司 | Gas explosion type pressure reducing module |
-
2017
- 2017-08-02 CN CN201720952233.0U patent/CN207178805U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110748679A (en) * | 2019-11-18 | 2020-02-04 | 沈阳航天新光集团有限公司 | Pressure reducer with pressure relief function |
| CN113685593A (en) * | 2021-08-20 | 2021-11-23 | 沈阳航天新光集团有限公司 | Gas explosion type pressure reducing module |
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