CN104847941A - High-resistance non-metal membrane type pressure reducer - Google Patents
High-resistance non-metal membrane type pressure reducer Download PDFInfo
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- CN104847941A CN104847941A CN201510106708.XA CN201510106708A CN104847941A CN 104847941 A CN104847941 A CN 104847941A CN 201510106708 A CN201510106708 A CN 201510106708A CN 104847941 A CN104847941 A CN 104847941A
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- valve
- steel ball
- valve body
- fixedly connected
- pressure reducer
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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 invention belongs to the field of pressure reducer products for spaceflights and particularly relates to a high-resistance non-metal membrane type pressure reducer. According to the high-resistance non-metal membrane type pressure reducer, automatic centering between a valve seat and a valve steel ball can be achieved, so the sealing performance of the structure is fully guaranteed; meanwhile, the pressure reducer can be assembled on a valve body as an independent component, so the relative position requirements of matching between the valve seat and the valve steel ball can be guaranteed beneficially, and reset accuracy of a product is improved; the machining accuracy requirements of the valve body are reduced; a kinematic pair is connected with a non-metal membrane and a pressure-bearing disc, and only plays a role of a push rod in the working process and transmits force to push the valve steel ball away from the valve seat; the kinematic pair and the valve steel ball are guided respectively, so the pressure reducer is good in technological performance, flexible to move, small in friction, high in valve element resetting accuracy and beneficial to improvement of valve port airtightness and dynamic performance.
Description
Technical field
The present invention relates to the nonmetal diaphragm pressure reducer of a kind of high-barrier, belong to astrovehicle decompressor product scope, particularly the nonmetal diaphragm pressure reducer of a kind of high barrier.
Background technique
Astrovehicle decompressor Main Function is that the high-pressure gas medium in gas cylinder is reduced to low pressure, for tank provides the pressure of relative constancy.
The fault mode of current astrovehicle decompressor product mainly contains three: first, and due to the contaminated caused sealing valve port reduced capability of valve seat, outlet pressure will be caused to climb, and tank pressure increases until break; Secondly, what cause due to material, weld defect or rupture of diaphragm leaks outside, and will cause the improper decline of storage pressure, and affect the lifetime of satellite; Finally, valve seat defect or larger fifth wheel pollute and cause delivery pressure abnormal.Once decompressor leaks outside and delivery pressure is abnormal, just belong to Single Point of Faliure, whole star disaster may be caused.The reliability of decompressor product directly determines that can astrovehicle become rail success, is the key affecting astrovehicle function and reliability.Therefore, astrovehicle decompressor product needed has good sealability and contamination resistance.
The outer leak rate of current astrovehicle decompressor product is general close to regulation requirement, and the sealing nargin that leaks outside is poor, and the sealing configuration of industrial products, cannot meet the highly reliable and high-precision requirement of astrovehicle.
Therefore, for the above shortcoming that astrovehicle decompressor product exists, need to develop that a kind of contamination resistance is strong, the decompressor product of good seal performance.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, providing a kind of high-barrier nonmetal diaphragm pressure reducer, this decompressor cleanliness is high, high without kinetic friction, barrier.
The object of the invention is to be achieved through the following technical solutions.
The nonmetal diaphragm pressure reducer of a kind of high-barrier of the present invention, comprises valve body, valve seat, guiding pair, valve steel ball, outlet connects mouth, connects pressure ring, nonmetal diaphragm, bearing disc, spring seat, spring, adjustment steel ball, kinematic pair, screw, entrance connect mouth and filter assemblies;
The upper end of described bearing disc is fluted; Spring seat there is the groove with the groove match of bearing disc;
The nonmetal F3 of hot pressing in described valve seat adopts, valve steel ball employing grade is the steel ball of G5 level, and material is stainless steel;
Take valve body as matrix, valve seat fixed placement is in the hyperbaric chamber of valve body;
Guiding pair fixed placement is in the inner chamber of valve seat, and valve steel ball is placed on the centre of guiding pair, carries out spacing by guiding pair to valve steel ball, and valve steel ball can be moved up and down along the axis of valve body;
Outlet connects mouth and is fixedly connected with the outlet of valve body, and the mode of being fixedly connected with is electron beam welding;
Entrance connects mouth and is fixedly connected with the entrance of valve body, and the mode of being fixedly connected with is electron beam welding; There is filter assemblies the ingress of valve body, and filter assemblies filters connecing the working medium of mouth to the inner chamber of valve body from entrance; Filter assemblies comprises filter screen and skeleton, and skeleton and filter screen are connected together by electron beam welding, and skeleton plays a supportive role to filter screen;
There is center hole at the center of nonmetal diaphragm, is enclosed within kinematic pair by the nonmetal diaphragm of center hole; Kinematic pair is fixedly connected with bearing disc by screw thread; Be placed on after kinematic pair is fixedly connected with bearing disc in the low-pressure cavity of valve body, the lower end of kinematic pair contacts with valve steel ball, and kinematic pair can move up and down along the axis of valve body;
Connect pressure ring is fixedly connected on valve body upper-end surface by screw;
The groove of bearing disc and the groove match of spring seat are placed, and form a spherical hollow space between two grooves, regulate steel ball to be placed in formed spherical hollow space, realize the centering of spring seat along valve body axis by regulating steel ball; Spring is fixedly connected on the convex surface of spring seat.
Beneficial effect
Can automatic centering between valve seat of the present invention and valve steel ball, fully ensure that the sealing of structure; Simultaneously be assembled on valve body as stand-alone assembly, be beneficial to and ensure valve seat and coordinate relative position requirement between valve steel ball, improve product reseting precision; Reduce valve body requirement on machining accuracy;
Kinematic pair is connected with bearing disc with nonmetal diaphragm, only plays push rod effect in working procedure, and valve steel ball is pushed away valve seat by transmitting force; Kinematic pair and valve steel ball lead respectively, good manufacturability, and flexibly movable, and rub little, valve core reset precision is high, are beneficial to and improve valve port tightness and dynamic performance;
Kinematic pair and valve body adopt Spielpassung, realize product kinematic pair without friction structure.Filter assemblies can improving product assembling, test process cleanliness protection, improving product contamination resistance; Carry out sensitive pressure by nonmetal diaphragm and intercept leaking outside of working medium, improving product sealability;
Valve seat and valve steel ball adopt soft-hard sealing means, realize product high pressure sealing.
Accompanying drawing explanation
Fig. 1 is the structural representation of decompressor of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
As shown in Figure 1, the nonmetal diaphragm pressure reducer of a kind of high-barrier, comprises valve body 1, valve seat 2, guiding pair 3, valve steel ball 4, outlet connects mouth 5, connects pressure ring 6, nonmetal diaphragm 7, bearing disc 8, spring seat 9, spring 10, regulates steel ball 11, kinematic pair 12, screw 13, entrance to connect mouth 14 and filter assemblies 15;
The upper end of described bearing disc 8 is fluted; Spring seat 9 there is the groove with the groove match of bearing disc 8;
Described valve seat 2 adopts the nonmetal F3 of interior hot pressing, and valve steel ball 4 adopts grade to be the steel ball of G5 level, and material is stainless steel;
With valve body 1 for matrix, valve seat 2 fixed placement is in the hyperbaric chamber of valve body 1;
Guiding pair 3 fixed placement is in the inner chamber of valve seat 2, and valve steel ball 4 is placed on the centre of guiding pair 3, is undertaken spacing by guiding pair 3 pairs of valve steel balls 4, and valve steel ball 4 can be moved up and down along the axis of valve body 1;
Outlet connects mouth 5 and is fixedly connected with the outlet of valve body 1, and the mode of being fixedly connected with is electron beam welding;
Entrance connects mouth 14 and is fixedly connected with the entrance of valve body 1, and the mode of being fixedly connected with is electron beam welding; There is filter assemblies 15 ingress of valve body 1, and the working medium of filter assemblies 15 to the inner chamber connecing mouth 14 to valve body 1 from entrance filters; Filter assemblies 15 comprises filter screen and skeleton, and skeleton and filter screen are connected together by electron beam welding, and skeleton plays a supportive role to filter screen;
There is center hole at the center of nonmetal diaphragm 7, is enclosed within kinematic pair 12 by the nonmetal diaphragm 7 of center hole; Kinematic pair 12 is 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 cavity of valve body 1, and the lower end of kinematic pair 12 contacts with valve steel ball 4, and kinematic pair 12 can move up and down along the axis of valve body 1;
Connect pressure ring 6 is fixedly connected on valve body 1 upper-end surface by screw 13;
The groove of bearing disc 8 and the groove match of spring seat 9 are placed, and form a spherical hollow space between two grooves, regulate steel ball 11 to be placed in formed spherical hollow space, realize the centering of spring seat 9 along valve body 1 axis by regulating steel ball 11; Spring 10 is fixedly connected on the convex surface of spring seat 9.
Pressurized gas connect mouth access from entrance, after entering into body cavity after the gas particles being wherein greater than 10 μm being filtered by filter assemblies, valve steel ball starts axially to move along valve body under the effect of kinematic pair and spring, to regulating flow and the outlet pressure of product, reach after requirement until low-pressure cavity pressure and set up stable equilibrium, low pressure connects mouth by outlet and is supplied to downstream use.
Pressurized gas range of working pressure is 3 ~ 32MPa, and outlet gas pressure scope is 1.4 ~ 1.8MPa continuously adjustabe, and rated flow is 0.5g/s.
The unexposed technology of the present invention belongs to general knowledge as well known to those skilled in the art.
Claims (3)
1. the nonmetal diaphragm pressure reducer of high-barrier, is characterized in that: comprise valve body (1), valve seat (2), guiding pair (3), valve steel ball (4), outlet connect mouth (5), connect pressure ring (6), nonmetal diaphragm (7), bearing disc (8), spring seat (9), spring (10), regulate steel ball (11), kinematic pair (12), screw (13), entrance connect mouth (14) and filter assemblies (15);
The upper end of described bearing disc (8) is fluted; Spring seat (9) there is the groove with the groove match of bearing disc (8);
With valve body (1) for matrix, valve seat (2) fixed placement is in the hyperbaric chamber of valve body (1);
Guiding pair (3) fixed placement is in the inner chamber of valve seat (2), valve steel ball (4) is placed on the centre of guiding pair (3), carry out spacing by guiding pair (3) to valve steel ball (4), valve steel ball (4) can be moved up and down along the axis of valve body (1);
Outlet connects mouth (5) and is fixedly connected with the outlet of valve body (1), and the mode of being fixedly connected with is electron beam welding;
Entrance connects mouth (14) and is fixedly connected with the entrance of valve body (1), and the mode of being fixedly connected with is electron beam welding; There is filter assemblies (15) ingress of valve body (1), and filter assemblies (15) filters connecing the working medium of mouth (14) to the inner chamber of valve body (1) from entrance;
Nonmetal diaphragm (7) has center hole, is enclosed within kinematic pair (12) by the nonmetal diaphragm of center hole (7); Kinematic pair (12) is fixedly connected with bearing disc (8) by screw thread; Kinematic pair (12) is placed in the low-pressure cavity of valve body (1) after being fixedly connected with bearing disc (8), the lower end of kinematic pair (12) contacts with valve steel ball (4), and kinematic pair (12) can move up and down along the axis of valve body (1);
Connect pressure ring (6) is fixedly connected on valve body (1) upper-end surface by screw (13);
The groove of bearing disc (8) and the groove match of spring seat (9) are placed, a spherical hollow space is formed between two grooves, regulating steel ball (11) to be placed in formed spherical hollow space, realizing the centering of spring seat (9) along valve body (1) axis by regulating steel ball (11); Spring (10) is fixedly connected on the convex surface of spring seat (9).
2. the nonmetal diaphragm pressure reducer of a kind of high-barrier according to claim 1, is characterized in that: the nonmetal F3 of hot pressing in described valve seat (2) adopts, and valve steel ball (4) employing grade is the steel ball of G5 level, and material is stainless steel.
3. the nonmetal diaphragm pressure reducer of a kind of high-barrier according to claim 1, is characterized in that: filter assemblies (15) comprises filter screen and skeleton, and skeleton and filter screen are connected together by electron beam welding, and skeleton plays a supportive role to filter 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 |
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| 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 |
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| CN104847941A true CN104847941A (en) | 2015-08-19 |
| CN104847941B CN104847941B (en) | 2017-03-15 |
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| 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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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106168303A (en) * | 2016-08-26 | 2016-11-30 | 北京控制工程研究所 | A kind of micrometeor high accuracy lightweight miniaturization pressure maintaining valve |
| CN109404578A (en) * | 2018-12-16 | 2019-03-01 | 山西汾西重工有限责任公司 | High pressure gas closed container releasing pressure automatically pressure-keeping mechanism and releasing pressure automatically pressure maintaining method |
| 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 |
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| US4112704A (en) * | 1976-07-06 | 1978-09-12 | Kabushiki Kaisha Saginomiya Seisakusho | Pilot valve-type evaporating pressure-regulating valve used in refrigerators |
| 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 |
| CN102345759A (en) * | 2010-07-30 | 2012-02-08 | 上海微电子装备有限公司 | Vacuum protective valve |
| CN103016807A (en) * | 2012-12-10 | 2013-04-03 | 无锡气动技术研究所有限公司 | Precise pressure regulating valve |
| CN103277553A (en) * | 2013-05-25 | 2013-09-04 | 铜陵市三圆特种铸造有限责任公司 | Mass-flow balanced type pressure regulating 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 |
-
2015
- 2015-03-11 CN CN201510106708.XA patent/CN104847941B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4112704A (en) * | 1976-07-06 | 1978-09-12 | Kabushiki Kaisha Saginomiya Seisakusho | Pilot valve-type evaporating pressure-regulating valve used in refrigerators |
| 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 |
| CN102345759A (en) * | 2010-07-30 | 2012-02-08 | 上海微电子装备有限公司 | Vacuum protective valve |
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| CN103277553A (en) * | 2013-05-25 | 2013-09-04 | 铜陵市三圆特种铸造有限责任公司 | Mass-flow balanced type pressure regulating 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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106168303A (en) * | 2016-08-26 | 2016-11-30 | 北京控制工程研究所 | A kind of micrometeor high accuracy lightweight miniaturization pressure maintaining valve |
| CN109404578A (en) * | 2018-12-16 | 2019-03-01 | 山西汾西重工有限责任公司 | High pressure gas closed container releasing pressure automatically pressure-keeping mechanism and releasing pressure automatically pressure maintaining method |
| 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 |
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| Publication number | Publication date |
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| CN104847941B (en) | 2017-03-15 |
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