CN104847941B - A kind of nonmetallic diaphragm pressure reducer of high-barrier - Google Patents
A kind of nonmetallic diaphragm pressure reducer of high-barrier Download PDFInfo
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- CN104847941B CN104847941B CN201510106708.XA CN201510106708A CN104847941B CN 104847941 B CN104847941 B CN 104847941B CN 201510106708 A CN201510106708 A CN 201510106708A CN 104847941 B CN104847941 B CN 104847941B
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- valve
- steel ball
- valve body
- fixedly connected
- nonmetallic
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Classifications
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- 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
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/32—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting on a servo-mechanism or on a catch-releasing mechanism
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Safety Valves (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
The present invention relates to a kind of nonmetallic diaphragm pressure reducer of high-barrier, belong to spacecraft decompressor product scope, the nonmetallic diaphragm pressure reducer of more particularly to a kind of high barrier.The present invention valve seat and valve steel ball between can automatic centering, fully ensured that the sealing of structure；It is assembled on valve body simultaneously as stand-alone assembly, requires beneficial to the cooperation relative position ensured between valve seat and valve steel ball, improves product reseting precision；Reduce valve body requirement on machining accuracy；Kinematic pair is connected with nonmetallic diaphragm and bearing disc, only plays push rod effect in the course of work, and valve steel ball is pushed away valve seat by transmission power；Kinematic pair is individually directed with valve steel ball, good manufacturability, and activity is flexibly, and rub little, valve core reset high precision, beneficial to raising valve port air-tightness and dynamic property.
Description
Technical field
The present invention relates to a kind of nonmetallic diaphragm pressure reducer of high-barrier, belongs to spacecraft decompressor product scope, special
It is not related to a kind of nonmetallic diaphragm pressure reducer of high barrier.
Background technology
Spacecraft decompressor Main Function is that the high-pressure gas medium in gas cylinder is reduced to low pressure, provides for tank relative
Constant pressure.
The fault mode of current spacecraft decompressor product mainly has three：Firstly, since valve seat is contaminated caused
Sealing valve port reduced capability, outlet pressure will be caused to climb, tank pressure is increased up rupturing；Secondly as material, weld seam
The leakage that defect or rupture of diaphragm cause, will cause the improper decline of storage pressure, affect the lifetime of satellite；Finally, valve seat defect
Or larger fifth wheel pollution causes output pressure exception.Once decompressor occurs leakage and output pressure exception, just belong to single-point
Failure, is likely to result in whole star disaster.The reliability of decompressor product directly determines that can spacecraft become rail success, is to affect space flight
Device function and the key of reliability.Therefore, spacecraft decompressor product needed has preferable sealing property and contamination resistance.
Spacecraft is generally close to regulation with the outer leak rate of decompressor product and requires at present, and leakage sealing nargin is poor, and industrial
The sealing structure of product, it is impossible to meet the highly reliable and high-precision requirement of spacecraft.
Therefore, the disadvantage mentioned above for existing with decompressor product for spacecraft, needs to develop a kind of contamination resistance strong, close
The good decompressor product of sealing property.
Content of the invention
The invention aims to overcoming the deficiencies in the prior art, there is provided a kind of high-barrier non-metallic film chip decompression
Device, the decompressor cleanliness factor are high, high without dynamic friction, barrier.
The purpose of the present invention is achieved through the following technical solutions.
A kind of nonmetallic diaphragm pressure reducer of high-barrier of the present invention, including valve body, valve seat, guiding pair, valve steel ball, goes out
Mouthful spigot joint, connection pressure ring, nonmetallic diaphragm, bearing disc, spring base, spring, adjust steel ball, kinematic pair, screw, entrance spigot joint and
Filter assemblies；
The upper end of described bearing disc is fluted；There is the groove with the groove match of bearing disc on spring base；
Described valve seat adopts the nonmetallic F3 of interior hot pressing, valve steel ball to adopt grade for the steel ball of G5 levels, and material is stainless
Steel；
Based on valve body, valve seat fixed placement is in the high pressure chest of valve body；
In the inner chamber of valve seat, valve steel ball is placed on the centre of guiding pair to guiding pair fixed placement, by guiding pair pair
Valve steel ball carries out spacing, allows valve steel ball to move up and down along the axial direction of valve body；
Outlet is spigot joint to be fixedly connected with the outlet of valve body, is fixedly connected mode for electron beam welding；
Entrance is spigot joint to be fixedly connected with the entrance of valve body, is fixedly connected mode for electron beam welding；The porch of valve body has
Filter assemblies, filter assemblies are filtered to the working media from the spigot joint inner chamber to valve body of entrance；Filter assemblies include filtering
Net and skeleton, skeleton and drainage screen pass through together with electron beam welding, and skeleton plays a supportive role to drainage screen；
There is centre bore at the center of nonmetallic diaphragm, is enclosed within kinematic pair by the nonmetallic diaphragm of centre bore；Kinematic pair passes through
Screw thread is fixedly connected with bearing disc；Kinematic pair is placed on after being fixedly connected with bearing disc in the low pressure chamber of valve body, under kinematic pair
End is contacted with valve steel ball, and kinematic pair can move up and down along the axial direction of valve body；
Connection pressure ring is fixedly connected on the upper surface of valve body by screw；
The groove of bearing disc and the groove match placement of spring base, form a spherical hollow space between two grooves, adjust
Section steel ball is placed in formed spherical hollow space, realizes centering of the spring base along valve body axial direction by adjusting steel ball；Spring is solid
Surely it is connected on the convex surface of spring base.
Beneficial effect
The present invention valve seat and valve steel ball between can automatic centering, fully ensured that the sealing of structure；Make simultaneously
It is assembled on valve body for stand-alone assembly, requires beneficial to the cooperation relative position ensured between valve seat and valve steel ball, improves product
Reseting precision；Reduce valve body requirement on machining accuracy；
Kinematic pair is connected with nonmetallic diaphragm and bearing disc, only plays push rod effect in the course of work, transmits power by valve steel
Ball pushes away valve seat；Kinematic pair is individually directed with valve steel ball, good manufacturability, and activity is flexibly, and rub little, valve core reset precision
Height, beneficial to raising valve port air-tightness and dynamic property；
Kinematic pair is coordinated using gap with valve body, realizes product kinematic pair without friction structure.Filter assemblies can lift product
Product assembling, the protection of test process cleanliness factor, improving product contamination resistance；Work come sensitive pressure and is intercepted by nonmetallic diaphragm
Make the leakage of medium, improving product sealing property；
Valve seat realizes product high pressure sealing with valve steel ball using soft-hard sealing means.
Description of the drawings
Fig. 1 is the structural representation of the decompressor of the present invention.
Specific embodiment
The present invention will be further described below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of nonmetallic diaphragm pressure reducer of high-barrier, including valve body 1, valve seat 2, guiding pair 3, valve steel
Ball 4, export spigot joint 5, connection pressure ring 6, nonmetallic diaphragm 7, bearing disc 8, spring base 9, spring 10, adjust steel ball 11, kinematic pair
12nd, screw 13, entrance spigot joint 14 and filter assemblies 15；
The upper end of described bearing disc 8 is fluted；There is the groove with the groove match of bearing disc 8 on spring base 9；
Described valve seat 2 adopts the nonmetallic F3 of interior hot pressing, valve steel ball 4 to adopt grade for the steel ball of G5 levels, and material is not for
Rust steel；
Based on valve body 1,2 fixed placement of valve seat is in the high pressure chest of valve body 1；
In the inner chamber of valve seat 2, valve steel ball 4 is placed on the centre of guiding pair 3 to 3 fixed placement of guiding pair, by being oriented to
Secondary 3 pairs of valve steel balls 4 carry out spacing, allow valve steel ball 4 to move up and down along the axial direction of valve body 1；
Export spigot joint 5 to be fixedly connected with the outlet of valve body 1, mode is fixedly connected for electron beam welding；
Entrance spigot joint 14 is fixedly connected with the entrance of valve body 1, is fixedly connected mode for electron beam welding；The entrance of valve body 1
The working media that there are filter assemblies 15,15 pairs of inner chambers from spigot joint 14 to the valve body 1 of entrance of filter assemblies at place is filtered；Filtration group
Part 15 includes that drainage screen and skeleton, skeleton and drainage screen pass through together with electron beam welding, and skeleton plays a supportive role to drainage screen；
There is centre bore at the center of nonmetallic diaphragm 7, is enclosed within kinematic pair 12 by the nonmetallic diaphragm 7 of centre bore；Kinematic pair
12 are fixedly connected with bearing disc 8 by screw thread；Kinematic pair 12 is placed on after being fixedly connected with bearing disc 8 in the low pressure chamber of valve body 1,
The lower end of kinematic pair 12 is contacted with valve steel ball 4, and kinematic pair 12 can move up and down along the axial direction of valve body 1；
Connection pressure ring 6 is fixedly connected on the upper surface of valve body 1 by screw 13；
The groove of bearing disc 8 and the groove match placement of spring base 9, form a spherical hollow space between two grooves,
Adjust steel ball 11 to be placed in formed spherical hollow space, realize spring base 9 along the right of 1 axial direction of valve body by adjusting steel ball 11
In；Spring 10 is fixedly connected on the convex surface of spring base 9.
Gases at high pressure are entered after the gas particles wherein more than 10 μm are filtered by filter assemblies from the spigot joint access of entrance
To after body cavity, valve steel ball in the presence of kinematic pair and spring starts axially to be moved along valve body, produces to adjusting
The flow and outlet pressure of product, sets up stable equilibrium after low pressure cavity pressure reaches requirement, and low pressure is by exporting spigot joint carrying
Supply downstream uses.
Gases at high pressure working pressure range is 3～32MPa, and outlet gas pressure scope is 1.4～1.8MPa continuously adjustabes,
Metered flow is 0.5g/s.
The undisclosed technology of the present invention belongs to general knowledge as well known to those skilled in the art.
Claims (3)
1. the nonmetallic diaphragm pressure reducer of a kind of high-barrier, it is characterised in that：Including valve body (1), valve seat (2), guiding pair (3),
Valve steel ball (4), outlet spigot joint (5), connection pressure ring (6), nonmetallic diaphragm (7), bearing disc (8), spring base (9), spring
(10), steel ball (11), kinematic pair (12), screw (13), entrance spigot joint (14) and filter assemblies (15) are adjusted；
The upper end of described bearing disc (8) is fluted；There is the groove with the groove match of bearing disc (8) on spring base (9)；
Based on valve body (1), valve seat (2) fixed placement is in the high pressure chest of valve body (1)；
In the inner chamber of valve seat (2), valve steel ball (4) is placed on the centre of guiding pair (3) to guiding pair (3) fixed placement, passes through
Guiding pair (3) carries out spacing to valve steel ball (4), makes valve steel ball (4) move up and down along the axial direction of valve body (1)；
Export spigot joint (5) to be fixedly connected with the outlet of valve body (1), mode is fixedly connected for electron beam welding；
Entrance spigot joint (14) is fixedly connected with the entrance of valve body (1), is fixedly connected mode for electron beam welding；Valve body (1) enters
There are filter assemblies (15) at mouthful, filter assemblies (15) are to carrying out from entrance spigot joint (14) to the working media of the inner chamber of valve body (1)
Filter；
Nonmetallic diaphragm (7) have centre bore, are enclosed within kinematic pair (12) by the nonmetallic diaphragm of centre bore (7)；Kinematic pair (12)
It is fixedly connected with bearing disc (8) by screw thread；Kinematic pair (12) is placed on the low of valve body (1) with bearing disc (8) after being fixedly connected
In pressure chamber, the lower end of kinematic pair (12) is contacted with valve steel ball (4), and kinematic pair (12) can be transported up and down along the axial direction of valve body (1)
Dynamic；
Connection pressure ring (6) is fixedly connected on the upper surface of valve body (1) by screw (13)；
The groove of bearing disc (8) and the groove match placement of spring base (9), form a spherical hollow space between two grooves,
Adjust steel ball (11) to be placed in formed spherical hollow space, realize spring base (9) along valve body (1) axle by adjusting steel ball (11)
To centering；Spring (10) is fixedly connected on the convex surface of spring base (9).
2. the nonmetallic diaphragm pressure reducer of a kind of high-barrier according to claim 1, it is characterised in that：Described valve seat
(2) the nonmetallic F3 of interior hot pressing, valve steel ball (4) is adopted to adopt grade for the steel ball of G5 levels, material is rustless steel.
3. the nonmetallic diaphragm pressure reducer of a kind of high-barrier according to claim 1, it is characterised in that：Filter assemblies (15)
Including drainage screen and skeleton, skeleton and drainage screen are by together with electron beam welding, skeleton plays a supportive role to drainage screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510106708.XA CN104847941B (en) | 2015-03-11 | 2015-03-11 | A kind of nonmetallic diaphragm pressure reducer of high-barrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510106708.XA CN104847941B (en) | 2015-03-11 | 2015-03-11 | A kind of nonmetallic diaphragm pressure reducer of high-barrier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104847941A CN104847941A (en) | 2015-08-19 |
| CN104847941B true CN104847941B (en) | 2017-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510106708.XA Active CN104847941B (en) | 2015-03-11 | 2015-03-11 | A kind of nonmetallic diaphragm pressure reducer of high-barrier |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106168303B (en) * | 2016-08-26 | 2019-03-26 | 北京控制工程研究所 | A kind of micrometeor high-precision lightweight miniaturization pressure maintaining valve |
| CN109404578B (en) * | 2018-12-16 | 2024-05-28 | 山西汾西重工有限责任公司 | Automatic pressure relief and pressure maintaining mechanism and automatic pressure relief and pressure maintaining method for high-pressure gas airtight container |
| CN112555429A (en) * | 2020-12-01 | 2021-03-26 | 上海空间推进研究所 | All-welded zero-leakage-rate pressure reducing valve |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5316961U (en) * | 1976-07-26 | 1978-02-13 | ||
| CN2108834U (en) * | 1991-05-10 | 1992-07-01 | 深圳市蛇口经济发展公司 | Reducing valve of medium-low pressure gas pipe |
| CN102345759B (en) * | 2010-07-30 | 2013-06-19 | 上海微电子装备有限公司 | Vacuum protective valve |
| CN103016807B (en) * | 2012-12-10 | 2014-04-09 | 无锡气动技术研究所有限公司 | Precise pressure regulating valve |
| CN103277553B (en) * | 2013-05-25 | 2016-01-20 | 铜陵市三圆特种铸造有限责任公司 | A kind of large discharge balanced type pressure regulator valve |
| CN203641606U (en) * | 2013-11-19 | 2014-06-11 | 李少锋 | Self-closing and pressure-reducing gas safety valve |
| CN203743548U (en) * | 2013-12-26 | 2014-07-30 | 青岛万力科技有限公司 | Special pressure reducing and stabilizing valve for fire protection |
| CN203784403U (en) * | 2014-01-07 | 2014-08-20 | 天津市易泰柯自动控制设备有限公司 | Flow control valve |
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| CN104847941A (en) | 2015-08-19 |
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