CN203082275U - High-temperature low-flow-resistance selection vale of Y-type channel - Google Patents
High-temperature low-flow-resistance selection vale of Y-type channel Download PDFInfo
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- CN203082275U CN203082275U CN 201320004846 CN201320004846U CN203082275U CN 203082275 U CN203082275 U CN 203082275U CN 201320004846 CN201320004846 CN 201320004846 CN 201320004846 U CN201320004846 U CN 201320004846U CN 203082275 U CN203082275 U CN 203082275U
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Abstract
The utility model relates to a high-temperature low-flow-resistance selection vale of a Y-type channel and belongs to the technical field of industrial valves, wherein the selection valve is particularly applied to multi-path selection places of an aerospace gas path system. The selection valve comprises a small disc spring, a metal gasket, packing, a valve body, a check ring, a valve seat, an abrasion-preventing gasket, a valve rod, a valve element, a large disc spring, an inlet/outlet connector, a press nut, an O-shaped sealing ring, screws and a flat gasket. A spherical sealing structure is adopted in the selection valve, a flow channel of the selection valve is modified into a Y shape, the entire pressure drop is reduced, and small flow resistance is obtained. All key components of the selection valve are made of materials with a low thermal-expansion coefficient, so that when the selection valve is used under a high-temperature condition, a gap between sealing pairs can be kept within a reasonable value all the time, elastic elements are adopted for supplying sealing force and elastic compensation for spherical sealing and sealing of the valve rod of the selection rod and are used as complementation and reservation of sealing performance of the selection valve, and the sealing performance and operation reliability of the selection valve are improved.
Description
Technical field
The high temperature low the flow resistance selector valve, the particularly multichannel of space flight air-channel system that the present invention relates to a kind of Y type passage are selected occasion, belong to industrial valve technology field.
Background technique
The space flight air-channel system is for other system on the astrovehicle provides the pipe-line system of supplies such as oxygen, nitrogen, air, comprises various solenoid valves and manually operated valve.
At present, selector valve more application ball valve, its good seal performance, reliable operation.But dead band, basin in the valve pocket appears more in conventional ball valve runner on the one hand right angle runners that adopt easily, makes its flow resistance bigger.Conventional ball valve causes its sealability to descend when higher temperature works long hours on the other hand.Make it can not satisfy the life requirements of space flight air-channel system.
Chinese patent publication number CN1904428A, on open January 31 2007 date, name is called " multiposition multipath cock valve ", adopts the hollow type tap structure, by the quantity of the outlet on spool outlet and the valve body and the various combination of position, realize how logical the multidigit of various ways is.Cock and valve body constitute sealing with taper fit, and the compressive strain by the O RunddichtringO provides conical surface seal power, and compensates conical surface wearing and tearing automatically.Advantages such as that this multiposition multipath cock valve has is simple in structure, easy to adjust, processing ease, but the seal degree of taper fit has direct relation with the moment of rotation that opens and closes operation, in order to improve sealability, just need add the coupling mechanism force of large rotating plug with respect to valve body, must increase the moment of rotation of valve opening and closing operation, can cause the sealing surface excessive wear and produce leakage, the wearing and tearing of sealing surface simultaneously also can produce fifth wheel, do not satisfy the requirement of space flight air-channel system cleanliness.
National defence research need a kind of life cycle cover ground, emission, at rail, return multiple mechanical environment such as stage, not only need matter long-pending than little, temperature range is wide, little, the long working life of operation moment of torsion, and can adapt to space environment, meet the valve of many indexs such as man-machine work efficiency and cleanliness, above-mentioned two kinds of structures can't meet the demands.
Summary of the invention
The objective of the invention is in order to overcome the deficiencies in the prior art, a kind of low flow resistance selector valve of high temperature of Y type passage is provided, this selector valve can be realized the multichannel selection function of space flight air-channel system, and simple in structure, matter is long-pending than little, good seal performance, little, the long service life of work moment.
The objective of the invention is to be achieved through the following technical solutions.
The high temperature of a kind of Y type passage of the present invention hangs down the flow resistance selector valve, and this selector valve comprises saucer spring, metallic shim, filler A, valve body, back-up ring, valve seat, antifriction pad, filler B, valve rod, spool, video disc spring, imports and exports joint, gland nut, O RunddichtringO A, O RunddichtringO B, screw and flat gasket;
The PTFE of valve rod place filler A is fitted along bevel direction by the PTFE material seal spare of two triangular-sections and is formed by stacking up and down, and the axial force that provides by the saucer spring makes the PTFE of valve rod place filler A produce radial deformation, thereby realizes seal request;
Valve body has three equally distributed flange-interface integral body to be Y type layout, and the axis of three flange-interfaces is on the plane; All have dovetail groove on three flange-interface planes, the central position of three flange-interfaces all has intercommunicating pore, and three intercommunicating pores interconnect; The valve body central position has cylindrical hole;
Valve seat has three, and the main body of each valve seat is a hollow cylinder, and is circumferentially fluted at the outer surface of hollow cylinder, and the internal surface of hollow cylinder is a sphere, is parallel to Normal direction in sphere centre and has dovetail groove;
Valve rod is the big cylindrical stock of the little lower end diameter of a upper end diameter, and the end that diameter is big is the boss of the cut both sides of a hemisphere;
Spool is a spheroid, and ball centre has a circular arc passage; On this passage Normal direction, a curve bath is arranged;
Importing and exporting joint is three, imports and exports joint and is connected with the flange-interface of valve body; Match with the through hole of valve body in the upper end of valve rod, and between filler A and metallic shim are arranged; Between the boss of valve rod and valve body, the antifriction pad is arranged; Gland nut adopts with the upper end of valve rod and is threaded; The saucer spring is housed between metallic shim and the gland nut;
Spool is packed in the intercommunicating pore of valve body; The curve bath of spool matches with the boss of valve rod lower end, and leaves floating space;
Valve seat is packed in the intercommunicating pore of valve body, and the sphere of valve seat contacts with the outer surface of spool; Two back-up rings and O RunddichtringO A are housed between the groove of valve seat and the intercommunicating pore of valve body; Between the dovetail groove of valve seat and the outer surface of spool filler B is housed;
Import and export joint and adopt screw peace spacers to be connected, and seal with O RunddichtringO B with the flange-interface of valve body; Import and export between joint and the valve seat two video disc springs that are installed in parallel are housed.
Above-mentioned filler A and filler B all adopt the PTFE material;
O RunddichtringO A and O RunddichtringO B all adopt silicone rubber, can adapt to high low temperature and change, and be ageing-resistant, meets long lifetime, hygiene usage requirement;
This selector valve is the two-bit triplet structure;
The runner of this selector valve is designed to " Y shape " form.The right angle section of conventional ball valve runner is improved to the arc transition section, fully reduces the dead zone range in the basin, reduce the pressure loss, reduce flow resistance.
The medium of this selector valve is a high temperature fluid, and key components and partss such as this valve body, spool, valve seat are selected the lower material of thermal expansion coefficient for use, for example titanium alloy; The little material of each sealing pair material selection difference of thermal expansion coefficient;
The antifriction pad adopts polyimide material, and surface of contact is processed as arc surface, effectively reduces the surface friction drag between the kinematic pair, has reduced the operational torque of selector valve.
The present invention's advantage compared with prior art is:
(1) selector valve adopts ball face sealing structure, and on the basis of conventional ball valve, the runner of selector valve improved becomes Y shape form; Realize no dead band in the basin perimeter, reduce whole pressure drop, obtain less flow resistance;
(2) each key components and parts of selector valve is selected the lower material of thermal expansion coefficient for use, chooses the difference of thermal expansion coefficient materials with smaller between each sealing pair; Make when selector valve is worked under the condition of high temperature, guarantee that the gap remains within the rational numerical between the sealing pair;
(3) sealing at the ball face sealing of selector valve and valve rod place all adopts elastic element that sealing force and elastic compensating are provided, and does for the sealability of selector valve and replenishes with standby, improves the sealability and the functional reliability of selector valve.
Description of drawings
Fig. 1 is the plan view of selector valve of the present invention;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the structural representation of valve rod;
Wherein, 1-saucer spring, 2-metallic shim, 3-filler A, 5-valve body, 6-back-up ring, the 7-valve seat, 8-antifriction pad, 9-filler B, 10-valve rod, 11-spool, 12-video disc spring, 13-imports and exports joint, 14-gland nut, 15-O RunddichtringO A, 16-O RunddichtringO B, 17-screw, 18-flat gasket.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
Embodiment
A kind of high temperature of Y type passage hangs down the flow resistance selector valve, as depicted in figs. 1 and 2, this selector valve comprises saucer spring 1, metallic shim 2, filler A3, valve body 5, back-up ring 6, valve seat 7, antifriction pad 8, filler B9, valve rod 10, spool 11, video disc spring 12, imports and exports joint 13, gland nut 14, O RunddichtringO A15, O RunddichtringO B16, screw 17 and flat gasket 18; Metallic shim 2 is the aluminum alloy pad;
Filler A3 is fitted along bevel direction by the PTFE material seal spare of two triangular-sections and is formed by stacking up and down, and the axial force that provides by saucer spring 1 makes filler A3 produce radial deformation, thereby realizes seal request;
Valve body 5 has three equally distributed flange-interface integral body to be Y type layout, and the axis of three flange-interfaces is on the plane; All have dovetail groove on three flange-interface planes, the central position of three flange-interfaces all has intercommunicating pore, and three intercommunicating pores interconnect; Valve body 5 central positions have cylindrical hole;
Valve seat 7 has three, and the main body of each valve seat 7 is a hollow cylinder, and is circumferentially fluted at the outer surface of hollow cylinder, and the internal surface of hollow cylinder is a sphere, is parallel to Normal direction in sphere centre and has dovetail groove;
Valve rod 10 is the big cylindrical stock of the little lower end diameter of a upper end diameter, and the end that diameter is big is the boss of the cut both sides of a hemisphere; As shown in Figure 3;
Spool 11 is a spheroid, and ball centre has a circular arc passage; On this passage Normal direction, a curve bath is arranged;
Importing and exporting joint 13 is three, imports and exports joint 13 and is connected with the flange-interface of valve body 5; Match with the through hole of valve body 5 in the upper end of valve rod 10, and between filler A3 and metallic shim 2 are arranged; Between the boss of valve rod 10 and valve body 5, antifriction pad 8 is arranged; Gland nut 14 adopts with the upper end of valve rod 10 and is threaded; Between metallic shim 2 and the gland nut 14 saucer spring 1 is housed;
Spool 11 is packed in the intercommunicating pore of valve body 5; The curve bath of spool 11 matches with the boss of valve rod 10 lower ends, and leaves floating space;
Valve seat 7 is packed in the intercommunicating pore of valve body 5, and the sphere of valve seat 7 contacts with the outer surface of spool 11; Two back-up rings 6 and O RunddichtringO A15 are housed between the intercommunicating pore of the groove of valve seat 7 and valve body 5; Filler B9 is housed between the outer surface of the dovetail groove of valve seat 7 and spool 11;
Import and export joint 13 and adopt screw 17 to fixedly connected, and seal with O RunddichtringO B16 with flat gasket 18 with the flange-interface of valve body 5; Import and export between joint 13 and the valve seat 7 two video disc springs 12 that are installed in parallel are housed.
Above-mentioned filler A3, filler B9 and back-up ring 6 all adopt the PTFE material;
O RunddichtringO A15 and O RunddichtringO B16 all adopt silicone rubber, can adapt to high low temperature and change, and be ageing-resistant, meets long lifetime, hygiene usage requirement;
Valve body 5, valve seat 7, screw 17 and spool 11 all adopt titanium alloy; Valve rod 10, flat gasket 18 and gland nut 14 all adopt stainless steel;
Antifriction pad 8 adopts polyimide material.
The content that is not described in detail in the specification of the present invention belongs to related domain professional and technical personnel's known technology.
Claims (1)
1. the low flow resistance selector valve of the high temperature of a Y type passage, it is characterized in that: this selector valve comprises saucer spring (1), metallic shim (2), filler A(3), valve body (5), back-up ring (6), valve seat (7), antifriction pad (8), filler B(9), valve rod (10), spool (11), video disc spring (12), import and export joint (13), gland nut (14), O RunddichtringO A(15), O RunddichtringO B(16), screw (17) and flat gasket (18);
Filler A(3) the PTFE material seal spare by two triangular-sections is formed by stacking up and down along the bevel direction applying, and the axial force that provides by saucer spring (1) makes filler A(3) produce radial deformation, realize seal request;
Valve body (5) has three equally distributed flange-interface integral body to be Y type layout, and the axis of three flange-interfaces is on the plane; All have dovetail groove on three flange-interface planes, the central position of three flange-interfaces all has intercommunicating pore, and three intercommunicating pores interconnect; Valve body (5) central position has cylindrical hole;
Valve seat (7) has three, and the main body of each valve seat (7) is a hollow cylinder, and is circumferentially fluted at the outer surface of hollow cylinder, and the internal surface of hollow cylinder is a sphere, is parallel to Normal direction in sphere centre and has dovetail groove;
Valve rod (10) is the big cylindrical stock of the little lower end diameter of a upper end diameter, and the end that diameter is big is the boss of the cut both sides of a hemisphere;
Spool (11) is a spheroid, and ball centre has a circular arc passage; On this passage Normal direction, a curve bath is arranged;
Importing and exporting joint (13) is three, imports and exports joint (13) and is connected with the flange-interface of valve body (5); Matching with the through hole of valve body (5) in the upper end of valve rod (10), between valve rod (10) and the valve body (5) filler A(3 is arranged) and metallic shim (2); Between the boss of valve rod (10) and valve body (5), antifriction pad (8) is arranged; Gland nut (14) adopts with the upper end of valve rod (10) and is threaded; Between metallic shim (2) and the gland nut (14) saucer spring (1) is housed;
Spool (11) is packed in the intercommunicating pore of valve body (5); The curve bath of spool (11) matches with the boss of valve rod (10) lower end, and leaves floating space;
Valve seat (7) is packed in the intercommunicating pore of valve body (5), and the sphere of valve seat (7) contacts with the outer surface of spool (11); Two back-up rings (6) and O RunddichtringO A(15 are housed) between the intercommunicating pore of the groove of valve seat (7) and valve body (5); Between the outer surface of the dovetail groove of valve seat (7) and spool (11) filler B(9 is housed);
Import and export joints (13) and fixedly connected with flat gasket (18) with the flange-interface employing screw (17) of valve body (5), and with O RunddichtringO B(16) seal; Import and export between joint (13) and the valve seat (7) two video disc springs (12) that are installed in parallel are housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320004846 CN203082275U (en) | 2013-01-05 | 2013-01-05 | High-temperature low-flow-resistance selection vale of Y-type channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320004846 CN203082275U (en) | 2013-01-05 | 2013-01-05 | High-temperature low-flow-resistance selection vale of Y-type channel |
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| Publication Number | Publication Date |
|---|---|
| CN203082275U true CN203082275U (en) | 2013-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320004846 Expired - Lifetime CN203082275U (en) | 2013-01-05 | 2013-01-05 | High-temperature low-flow-resistance selection vale of Y-type channel |
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| CN (1) | CN203082275U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109296763A (en) * | 2017-07-24 | 2019-02-01 | 费希尔控制产品国际有限公司 | Seal assembly for fluid valve |
| CN112253791A (en) * | 2020-10-29 | 2021-01-22 | 上海沪东造船阀门有限公司 | Double-sealing ball valve with compensation valve seat |
-
2013
- 2013-01-05 CN CN 201320004846 patent/CN203082275U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109296763A (en) * | 2017-07-24 | 2019-02-01 | 费希尔控制产品国际有限公司 | Seal assembly for fluid valve |
| CN112253791A (en) * | 2020-10-29 | 2021-01-22 | 上海沪东造船阀门有限公司 | Double-sealing ball valve with compensation valve seat |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130724 |