CN106134408B - A kind of manual plug valve of long handle self-centering that is applicable to space flight air-channel system - Google Patents
A kind of manual plug valve of long handle self-centering that is applicable to space flight air-channel systemInfo
- Publication number
- CN106134408B CN106134408B CN201110011872.4A CN201110011872A CN106134408B CN 106134408 B CN106134408 B CN 106134408B CN 201110011872 A CN201110011872 A CN 201110011872A CN 106134408 B CN106134408 B CN 106134408B
- Authority
- CN
- China
- Prior art keywords
- valve
- spool
- ring
- valve body
- brake hoop
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Mechanically-Actuated Valves (AREA)
Abstract
The manual plug valve of long handle self-centering that is applicable to space flight air-channel system, screw is installed to valve seat, lower brake hoop, spool, upper brake hoop in valve body; Gland is installed to ring, upper sealing ring outer shroud, back-up ring in upper sealing ring in valve body; Locking nut is affixed to handle, spring on spool. Valve body is provided with entrance and exit, has a clear opening on spool, and when clear opening and entry and exit are located on the same line, valve is in opening. Lower brake hoop and upper brake hoop form a pair of nonmetal " bearing ", as being the spacing up and down of spool, make spool possess the function of automatic adjustment centering simultaneously. Sealed by ring, upper sealing ring outer ring wedgewise in gland, back-up ring, upper sealing ring, hold spool tightly, the two ends of spring are fixedly connected with handle with gland respectively, and handle drives Spool rotating. Valve of the present invention has simple in structure, and matter is long-pending than little, good seal performance, and operational torque is little, does not produce fifth wheel, the feature of long service life.
Description
Technical field
The present invention relates to a kind of spacecraft valve.
Background technology
Space flight air-channel system is to provide the pipeline of the supplies such as oxygen, nitrogen, air for other system on spacecraftSystem, comprises various electromagnetism, manually-operated gate. Wherein hand-operated valve, by spacefarer's manual operation, is controlled gas and is situated betweenThe circulation of matter and blocking.
At present, the more use ball valve of hand-operated valve, ball valve sealing performance is good, reliable operation, but because of encapsulantWith the restriction of structure, the working environment that ball valve can not adaptive temperature circulation change; And when ball valve work timesWhen more, because the friction of rotatable parts and packing matcrial may produce fifth wheel, therefore cannot expireThe requirement of foot space flight air-channel system to cleanliness factor.
Granted publication day is on May 13rd, 2009, the Chinese patent that grant number is CN201236958YDisclose a kind of plug valve, comprised valve body, cock, valve gap, potted component and transmission device, valve body and revolvingPlug surface lining is moulded, and cock and valve body form sealing with taper fit. Valve body sealing surface is ring-type convex rib structure,Cock lining is moulded upper back an annular groove, places " O " RunddichtringO in annular groove, has reduced cock sealingFrictional force between face and valve body sealing surface, cock top is added with " O " RunddichtringO and sealing gasket simultaneously, reducesFrictional force between cock upper surface and airtight and watertight padding, there is operation moment of torsion little, good seal performance, workThe advantage such as reliable. But the seal degree of taper fit has direct relation with the rotating torque that opens and closes operation, forRaising sealing property, just need to add the coupling mechanism force of large rotating plug with respect to valve body, must increase valve opening and closing behaviourThe rotating torque of doing, can cause sealing surface excessive wear thus and produce leakage; The wearing and tearing of sealing surface simultaneously alsoCan produce fifth wheel, not meet the requirement of space flight air-channel system cleanliness factor.
National defence research need a kind of life cycle cover ground, transmitting, in-orbit, return to the multiple mechanics such as stageEnvironment, not only matter long-pending than little, temperature range is wide, operation moment of torsion is little, long working life, and adapts to spatial loopBorder, meet the valve of many indexs such as man-machine work efficiency, existing valve mechanism cannot meet this demand.
Summary of the invention
Technology of the present invention is dealt with problems and is: overcome the deficiencies in the prior art, provide one to be applicable to space flightThe manual plug valve of long handle self-centering of air-channel system, this valve mechanism is simple, and matter is long-pending than little, good seal performance,Operational torque is little, does not produce fifth wheel, long service life.
Technical solution of the present invention is: a kind of long handle self-centering that is applicable to space flight air-channel system is manually revolvedPlug valve, comprises valve seat, lower seal, lower brake hoop, radial direction seal ring, spool, valve body, cylinder sealingRing, upper sealing ring outer shroud, back-up ring, gland, handle, spring in circle, upper brake hoop, upper sealing ring; ValveBody is the cavity body structure of hollow, and the outside of valve body is mutually 180 orientation and is respectively equipped with an entrance and an outlet;Spool is step cylinder axis, and thicker one end of cylinder axis is positioned at the inside of valve body, and the other end of cylinder axis is stretchedGo out valve body; In the inside of valve body, the thicker part two ends of cylinder axis are respectively by lower brake hoop and upper brake hoopThe rotation that clamps and feel relieved, lower brake hoop is fixed by valve seat, and lower seal is positioned at valve seat and lower brake hoopBetween, the close lower brake hoop of spool and the position of upper brake hoop are respectively equipped with an annular seal groove, annularRadial direction seal ring is installed in seal groove; On spool, have a clear opening, it is close that the two ends of clear opening are provided with space annularSealing groove, cylinder sealing ring is arranged on described annular seal groove inside, space, when described clear opening and valve bodyOn entrance and exit while being located on the same line valve in opening; Ring, upper close in upper sealing ringSeal outer shroud, back-up ring, gland are arranged on successively brake hoop outside and form wedge-type seal and hold spool tightly; BulletSpring is enclosed within one end of stretching out valve body outside of spool, and the two ends of spring are fixedly connected with handle with gland respectively,Handle drives Spool rotating.
Described cylinder sealing ring and radial direction seal ring are O RunddichtringO.
Described valve body upper end has two U-lags, coordinates with two square boss of handle, at its lower end, realizesHandle spacing.
The present invention's advantage is compared with prior art:
(1) the space dynamic seal ring groove the present invention relates to is by the O shape circle in plane, by certain systemNumber relation stretches and is projected to the profile that space circle cylinder forms, because the design of profile geometric parameter has been consideredThe own distortion of O shape circle, it is firm that O shape circle is installed location in groove, is difficult for deviating from;
(2) the gas channels mouth of the body cavity chamfering of having living space, chamfer angle adopts obtuse angle, but chamfering is at valveThe intersection that intracoelomic cavity cylinder forms, size, within the scope of O shape circle internal diameter size, makes plug valve open or closeIn closed procedure, even Slow Deformation when O shape is enclosed through passway, movable sealing reliability is high, and work times is aobviousWork increases;
(3) dimensional accuracy of sealed groove, mainly controls by the matched in clearance tolerance of external seal face, fromAnd control Compress rate of sealing ring in 15% left and right, can adapt to simultaneously mismachining tolerance, space environment temperature alternating,Seal request under the combining case such as change of pressure, vibratory impulse;
(4) in the little space in valve body chamber, adopt nonmetal " bearing " formula structure, make spool there is automatic tuneThe function of adjusting the heart, ensures that valve all has good sealing property in the time of static or switch motion;
(5) rotating mechanism coordinates by " U " shape groove, realizes the spacing and locking function of handle, Ji NengbaoThe accurate location of card valve indicating positions, can effectively prevent that again spacefarer from opening by mistake or mistake is closed operation;
(6) in the course of the work, there is certain interval between rotatable parts spool and fixed part, no in valveDirectly contact, can not produce fifth wheel because of wearing and tearing.
Brief description of the drawings
Fig. 1 is the overall profile of plug valve of the present invention;
Fig. 2 is that the space annular seal groove of plug valve of the present invention forms schematic diagram.
Detailed description of the invention
As shown in Figure 1, be the overall profile of plug valve of the present invention, comprise sunk screw 1, valve seat 2,Lower seal 3, lower brake hoop 4, radial direction seal ring 5, spool 6, valve body 7, cylinder sealing ring 8, onRing 10 in brake hoop 9, upper sealing ring, upper sealing ring outer shroud 11, back-up ring 12, gland 13, handle 14,Spring 15, locking nut 16; Screw 1 is by valve seat 2, lower seal 3, lower brake hoop 4, radial sealCircle 5, spool 6, cylinder sealing ring 8, upper brake hoop 9 are installed in valve body 7; Gland 13 is by upper sealingIn circle, ring 10, upper sealing ring outer shroud 11, back-up ring 12 are installed in valve body 7; Locking nut 16 is by handle14, spring 15 is affixed on spool 6.
Plug valve of the present invention is 2/2-way structure, valve body 7 be mutually 180 orientation be respectively equipped with an entrance andOne outlet, spool 6 has a clear opening, during in enable possition, is communicated with the entrance of valve body 7 at plug valveAnd outlet, flow is maximized, reduce the pressure loss.
Spool 6 is step cylinder axis, and the face of cylinder is provided with a space annular seal groove, and cylinder is installed in grooveSealing ring 8, when valve is in the closed position, prevents valves leakage; The gas circuit via openings position of spool 6With annular seal groove position, space cross, and outlet opening place has guiding gutter, at plug valve by openingIn the process of closing, ensure that the gas in valve pocket is discharged smoothly.
The primary seal of plug valve is O-ring seals sealing, can adapt to high low temperature and change, ageing-resistant, meets lengthLife-span, hygiene instructions for use.
As shown in Figure 2, for the space annular seal groove of plug valve of the present invention forms schematic diagram.
The central plane XOY enclosing taking valve space O shape, as datum level, sets up right angle and cylindrical coordinate system,As shown in Figure 2 a, the radius that wherein R is valve body, r is that the space O shape that is projected to the valve body face of cylinder is enclosedThe original radius of central axis circle in the time of flat, A is any point on the curve of O shape circle axle center, space.C was the valve body face of cylinder bus of space O shape circle central axis circle+Z-direction peak D, with A point is flat excessivelyRow is in the intersection point of the circle of XOY plane. O1 was the center of circle that A point is parallel to the circle of XOY plane, and θ isThe angle of straight line CO1 and AO1. Space O shape circle is shown laid flat in to the circle of center of circle O2, as shown in Figure 2 b.
Taking θ as independent variable,K is the stretching, extension coefficient of O shape circle distortion.
The chord length AC that launches circle is equivalent to turn on the face of cylinder that radius is R the arc length at θ angle,
OC is z coordinate
The equation in coordinates of any point A on the curve of O shape circle axle center, space, can derive and obtain by geometrical relationship:
Above formula can be used as the general formula that plug valve space groove is selected, segmentation θ value, and by x, y, z sitsIn mark write into Databasce, generate .xls file and import 3D sculpting software, can be painted by software curve functionO shape ring recess between clearancen.
The upper and lower side of spool 6 cylinder axis is respectively provided with an annular seal groove, and radial direction seal ring 5 is installed in groove,During in enable possition, prevent valve leakage out of steam system at valve; On spool 6 tops, by gland 13, back-up ring 12,In upper sealing ring, ring 10, upper sealing ring outer shroud 11 form wedge-type seal, hold spool 6 tightly, in obstruct, leakPassage, as the backup of top radial direction seal ring 5; Spool 6 bottoms are by wedge 2 flange screw lower seal3, intercept lower leakage path, as the backup of bottom radial direction seal ring 5.
Lower brake hoop 4 and upper brake hoop 9 form a pair of nonmetal " bearing ", as the bound of spool 6Position makes spool 6 possess the function of automatic adjustment centering simultaneously, avoid because of the one-sided installation of cylinder sealing ring 8 inclined to one sideThe heart or upper Square handle 14 operate 6 rotations to spool and cause disturbance.
Valve body 7 upper ends have two " U " shape grooves, coordinate with two square boss of handle 14 lower ends, makeHandle 14 can only rotate in 90 scopes, can ensure the accurate location of valve indicating positions, again can be effectivePrevent that spacefarer from opening by mistake or mistake is closed operation.
Handle 14 coordinates with the four directions on spool 6 by square hole, and band movable valve plug 6 rotates. Handle 14 and pressureBetween lid 13, be provided with spring 15, realize the reset of handle 14.
Handle 14 is shaped as long handle " " font, meets ergonomics requirement, facilitates astronaut manualOperation.
When the gateway of the clear opening on spool 6 and valve body 7 is during in straight line, plug valve is in openingPosition. If need valve-off, depress handle 14, until handle 14 lower end square boss touch " U "Shape trench bottom, this state lower spring 15 compresses, and then 90 ° of turning handles 14 make leading directly on spool 6When the gateway axis of hole and valve body 7 is vertical, release handle 14, due to the effect of spring 15, handle 14Reset, realized closing and location, position and locking of plug valve, can avoid maloperation to change valve simultaneouslyDuty.
The content not being described in detail in description of the present invention belongs to those skilled in the art's known technology.
Claims (3)
1. the manual plug valve of long handle self-centering that is applicable to space flight air-channel system, is characterized in that comprising:Valve seat (2), lower seal (3), lower brake hoop (4), radial direction seal ring (5), spool (6), valve body(7), ring (10), upper sealing ring outer shroud in cylinder sealing ring (8), upper brake hoop (9), upper sealing ring(11), back-up ring (12), gland (13), handle (14), spring (15); Valve body (7) is hollowCavity body structure, the outside of valve body (7) is mutually 180 orientation and is respectively equipped with an entrance and an outlet; ValveCore (6) is step cylinder axis, and thicker one end of cylinder axis is positioned at the inside of valve body (7), cylinder axisThe other end stretches out valve body (7); In the inside of valve body (7), the thicker part two ends of cylinder axis respectively byThe rotation that clamps and feel relieved of lower brake hoop (4) and upper brake hoop (9), lower brake hoop (4) passes through valveSeat (2) is fixing, and lower seal (3) is positioned between valve seat (2) and lower brake hoop (4), spool (6)Close lower brake hoop (4) and the position of upper brake hoop (9) be respectively equipped with an annular seal groove, annularRadial direction seal ring (5) is installed in seal groove; Spool has a clear opening on (6), and the two ends of clear opening are provided withSpace annular seal groove, cylinder sealing ring (8) is arranged on described annular seal groove inside, space, when describedClear opening and valve body (7) on entrance and exit while being located on the same line valve in opening;In upper sealing ring, ring (10), upper sealing ring outer shroud (11), back-up ring (12), gland (13) are installed successivelyForm wedge-type seal and hold spool (6) tightly in upper brake hoop (9) outside; Spring (15) is enclosed within spool (6)The one end of stretching out valve body (7) outside, the two ends of spring (15) respectively with gland (13) and handle (14)Be fixedly connected with handle (14) band movable valve plug (6) rotation.
2. a kind of long handle self-centering that is applicable to space flight air-channel system according to claim 1 is manually revolvedPlug valve, is characterized in that: described cylinder sealing ring (8) and radial direction seal ring (5) are the sealing of O typeCircle.
3. a kind of long handle self-centering that is applicable to space flight air-channel system according to claim 1 is manually revolvedPlug valve, is characterized in that: described valve body (7) upper end has two U-lags, under handle (14)Two square boss of end coordinate, and realize the spacing of handle (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110011872.4A CN106134408B (en) | 2011-07-21 | 2011-07-21 | A kind of manual plug valve of long handle self-centering that is applicable to space flight air-channel system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110011872.4A CN106134408B (en) | 2011-07-21 | 2011-07-21 | A kind of manual plug valve of long handle self-centering that is applicable to space flight air-channel system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106134408B true CN106134408B (en) | 2014-08-27 |
Family
ID=57251025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110011872.4A Expired - Fee Related CN106134408B (en) | 2011-07-21 | 2011-07-21 | A kind of manual plug valve of long handle self-centering that is applicable to space flight air-channel system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106134408B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114183554A (en) * | 2021-11-04 | 2022-03-15 | 北京卫星制造厂有限公司 | Plug valve |
-
2011
- 2011-07-21 CN CN201110011872.4A patent/CN106134408B/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114183554A (en) * | 2021-11-04 | 2022-03-15 | 北京卫星制造厂有限公司 | Plug valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR03 | Grant of secret patent right | ||
| GRSP | Grant of secret patent right | ||
| DC01 | Secret patent status has been lifted | ||
| DCSP | Declassification of secret patent | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140827 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |