CN101265986B - Low pressure drop high-temperature gas changing-over valve sealing structure - Google Patents
Low pressure drop high-temperature gas changing-over valve sealing structure Download PDFInfo
- Publication number
- CN101265986B CN101265986B CN2008100668652A CN200810066865A CN101265986B CN 101265986 B CN101265986 B CN 101265986B CN 2008100668652 A CN2008100668652 A CN 2008100668652A CN 200810066865 A CN200810066865 A CN 200810066865A CN 101265986 B CN101265986 B CN 101265986B
- Authority
- CN
- China
- Prior art keywords
- valve
- sealing
- air outlet
- hole
- temperature gas
- 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
Links
Images
Landscapes
- Lift Valve (AREA)
Abstract
The invention relates to a sealing structure of a low pressure high temperature gas change valve, which comprises an air inlet on one end thereof, an valve body of two air outlets thereof, a valve rod arranged rotationally in the valve body, a valve cover connected on the valve rod, rotating with the valve rod, and sealed on the air inlet corresponding to the valve rod, and an inwardly convex sealing step is arranged on the place where the valve cover and the air outlet are hermetically matched on the inner side wall of the air outlet. The outer edge of the valve is matched with the sealing step to form a sealing surface, the sealing surface of the outer edge of the valve is designed as a sealing conical surface; and the sealing surface of the sealing step is designed a spherical surface matched with the sealing conical surface. The sealing structure by contacting the conical surface and the spherical surface in line contact type between the outer edge of the valve cover and the sealing step on the air inlet enables the sealing between the valve cover and the sealing surface to be quite reliable. The sealing structure is simple and has not many requirements for the processing performance of high temperature resistant materials, thereby having a large selection range.
Description
Technical field
The present invention relates to a kind of high-temperature gas valve, more particularly, relate to a kind of sealing configuration of low pressure drop high-temperature gas changing-over valve
Background technique
In the prior art, traditional selector valve generally includes valve body, valve gap and rotating shaft, comprises suction port and air outlet on the valve body, and rotating shaft is installed in the upper end of valve gap, rotating shaft can be realized the opening and closing of valve body, but there is bigger flow resistance in this valve convection cell.
Usually adopt resistant to elevated temperatures ball valve when controlling for high-temperature gas, materials such as the resistant to elevated temperatures stainless steel of the common use of the spool of ball valve are made.When needs commutate to high-temperature gas, usually adopt following tracheae linkage structure, promptly utilize a three-way pipe that gas is divided into two branch roads, on two branch roads, resistant to elevated temperatures ball valve is set respectively, control the spool of two ball valves respectively, realize control each tracheae bypass flow.
In this design, single ball valve can't realize shunting the function of commutation, can produce bigger flow path resistance during the structure fluid flow of a plurality of ball valves, makes that the gas energy loss is bigger, and this has the fluid of being strict with for pressure drop, is difficult to accept; And the overall structure of this design is complicated unusually.
For this reason, the inventor discloses a kind of high-temperature gas changing-over valve in Chinese patent application CN200810066723.6, and the applying date is on April 17th, 2008.This selector valve comprises valve body, valve rod and two valve gaps that are provided with a suction port and two air outlets, and valve gap seals two air outlets respectively when rotating in valve body with valve rod, thereby uses a valve just can commutate to high-temperature gas.Because the fluid that passes through in this valve is a high-temperature gas, and the resistance to high temperature of Sealing commonly used is relatively poor, therefore, adopts conventional sealing configuration can't reach good sealing effect, is easy to generate leakage.
Summary of the invention
The technical problem to be solved in the present invention is, the problems referred to above at sealing between the valve gap of the selector valve of prior art and the valve body exists provide a kind of simple in structure, reliable sealing low pressure drop high-temperature gas changing-over valve sealing configuration.
The technical solution adopted for the present invention to solve the technical problems is: the sealing configuration of constructing a kind of low pressure drop high-temperature gas changing-over valve, comprise valve body that an end is provided with suction port, a other end and is provided with two air outlets, rotate the valve rod that is arranged in the valve body, two be connected on the valve rod and and rotate salable valve gap at corresponding with it place, air outlet with valve rod, described air outlet madial wall is positioned at valve gap and the place of being sealed and matched, air outlet is provided with an inwardly protruded sealed step; The outer rim of the described valve gap formation sealing surface that matches with described sealed step, the sealing surface of described valve gap outer rim is set to the O-ring conical surface; The sealing surface at described sealed step place is set to the sealing sphere that is complementary with the described O-ring conical surface; The link that described valve gap comprises that the center is provided with that the end cover of through hole, afterbody pass that described through hole is fixedlyed connected with described valve rod and head and end cover flexibly connect, be fixed on the end cover and the capping of the head seal of described link in described through hole; The outer rim of described end cover matches with described sealed step and forms the described O-ring conical surface.
In the sealing configuration of high-temperature gas changing-over valve of the present invention, described sealed step is formed by the seal ring that detachably is fixed on the madial wall of valve body air outlet, and described sealing sphere is arranged on the seal ring on the end face of described valve gap one end.
In the sealing configuration of high-temperature gas changing-over valve of the present invention, described seal ring is fixed on the madial wall of air outlet by the locking collar that is arranged on the place, air outlet.
In the sealing configuration of high-temperature gas changing-over valve of the present invention, the head of described link is provided with the shaft shoulder that is complementary with described through hole, is positioned at the through hole between described capping and the end cover and is provided with the chamber that supplies described link head movement.
In the sealing configuration of high-temperature gas changing-over valve of the present invention, described link afterbody is connected with described threaded stem.
In the sealing configuration of high-temperature gas changing-over valve of the present invention, described valve rod and described link afterbody fixed connection place be set to through hole be complementary spherical.
Implement the sealing configuration of high-temperature gas changing-over valve of the present invention, has following beneficial effect: by an inwardly protruded sealing surface is set on the madial wall that is positioned at the air outlet in valve body, the sealing face formation sealing surface that matches with the outer rim of valve gap, it is the O-ring conical surface that the valve gap outer rim wherein is set, it is the sealing sphere that is complementary with the described O-ring conical surface that sealing surface is set, like this, when valve gap turns to place, corresponding with it air outlet with valve rod, valve gap shelters from the air outlet at the sealing surface place, and the O-ring conical surface of valve gap outer rim embeds in the sealing surface, and the line that forms the conical surface and sphere with the sealing sphere of sealing surface contacts.This line contact makes the sealing between valve gap and the sealing surface become very reliable.Because valve gap is arranged in the valve body and between suction port and air outlet, then the gas that enters from suction port can produce certain pressure to valve gap, this pressure acts on valve gap and is pressed on the direction of sealing surface, can no longer apply very big moment of torsion as long as make after applying less moment of torsion on the valve rod turns to valve gap on the step in valve body, only need utilize locating piece such as self-locking nut can with valve bonnet seal on the sealing surface of air outlet, make operation become very convenient quick the valve rod positioning instant.
By the link that is provided with that valve gap comprises that the center is provided with that the end cover of through hole, afterbody pass that described through hole is fixedlyed connected with described valve rod and head and end cover flexibly connect, be fixed on the end cover and with the capping of the head seal of described link in described through hole; Described end cover is sealed on the sealing surface of described air outlet, and its outer rim is provided with the described O-ring conical surface.Because the afterbody of link is fixed on the valve rod, makes valve gap can not break away from valve rod, can rotate in valve body with valve rod; Because the head of link and end cover flexibly connect, make end cover to produce certain rotating simultaneously relative to valve rod.When the end cover of valve rod drive valve gap turned to the air outlet, because the machining error of accumulation, the center of the O-ring conical surface not necessarily just faced the center of the sealing sphere (real is rounded surface) on the air outlet on the end cover; At this moment, because end cover is connected with valve handle activity, end cover carries out adaptive adjustment, as the center line inclination several angle of end cover with respect to the air outlet, Line of contact between the O-ring conical surface and the sealing sphere will become an ellipse, can reach good sealing effect this moment equally, further improved the reliability of sealing, avoids gas to reveal away from the sealing surface between end cover and the seal ring.
In the sealing configuration of high-temperature gas changing-over valve of the present invention, because interior valve gap of valve body and place, air outlet sealing surface is simple in structure, less demanding to the processibility of exotic material, the scope that its material is selected strengthens, and then makes its Applicable scope wider.
The invention will be further described below in conjunction with drawings and Examples.
Description of drawings
Fig. 1 is the sealed structural representation of high-temperature gas changing-over valve of the present invention;
Fig. 2 is the linkage structure schematic representation of valve gap and valve rod in the sealing configuration of high-temperature gas changing-over valve of the present invention;
Fig. 3 is the I portion enlarged diagram among Fig. 1;
Fig. 4 is the II portion enlarged diagram among Fig. 2;
Fig. 5 is the another kind of linkage structure schematic representation of valve gap and valve rod in the sealing configuration of high-temperature gas changing-over valve of the present invention.
Embodiment
As shown in Figure 1, in the high-temperature gas changing-over valve, comprise valve body 10, valve rod 20 and two valve gaps 30,40.Be to adapt to the hot environment of high-temperature gas, valve body 10, valve rod 20 and valve gap 30,40 all adopt resistant to elevated temperatures material to make, as stainless steel etc.Shown in Fig. 1,3, one end of valve body 10 is provided with a suction port 11, and the other end is provided with two air outlets 12,13, and the sectional area of each air outlet all equates with the sectional area of suction port, after guaranteeing the shunting commutation, the air displacement of the air outlet of exhaust is identical with the air inflow of suction port.The sectional shape of air outlet 12,13 and suction port 11 preferably is set to circle, because this shape can be born bigger gas pressure.Valve rod 20 and valve gap 30,40 all are arranged in the valve body 10.Wherein, valve rod 20 can rotate with respect to valve body 10.Two valve gap 30,40 connections are arranged on the valve rod 20 also corresponding with two air outlets 12,13 respectively.Two valve gaps 30,40 can seal and be arranged on 12,13 places, air outlet.
As shown in Figure 1, 2, 3, in the preferred embodiment of the sealing configuration of high-temperature gas changing-over valve of the present invention, the madial wall of air outlet 12 is provided with the sealed step 55 of a convex, and sealing step 55 can match with the outer rim of corresponding valve gap 30 and form sealing surface P.
Shown in Fig. 2,4, in this preferred embodiment, valve gap 30 comprises end cover 31, capping 32 and link 33.Wherein the shape of end cover 31 and air outlet 12 shapes are complementary, and the sealing end cap matches with sealed step 55, can seal corresponding with it air outlet 12 after making sealing end cap 31 rotate in valve body 10.The centre of end cover 31 is provided with a through hole 34, and the afterbody 35 of link 33 passes through hole 34 and is fixed together with valve rod 20, and the afterbody 35 of preferred link is fixed on the valve rod 20 by being threaded.The head 36 of link preferably is provided with a shaft shoulder 39, and this shaft shoulder 39 is stuck on the end cover 31 apart from the valve rod 20 side side far away.So just end cover 31 is flexibly connected and be arranged on the valve rod 20.Capping 32 is fixed on end cover 31 by fastening piece (as screw etc.) 37 and is provided with on the side side of link head 36, and will cover through hole 34, avoids gas to flow out from the through hole.
Shown in Fig. 1,3, in this preferred embodiment, the outer rim that end cover 31 preferably is set is the O-ring conical surface 53; Sealed step 55 is provided with rounded surface 54 towards a side of valve gap 30, the sealing cone 53 common sealing surface P that form between valve gap and the air outlet of this rounded surface 54 and end cover, thereby the sealing between realization valve gap 30 and the air outlet 12.Concrete, rounded surface 54 on the sealed step is the sealing sphere, when the end cover on the valve gap 31 turns to sealed step 55 places of air outlet madial wall with valve rod 20, the O-ring conical surface 53 on the end cover is embedded in the sealed step 55 of air outlet inwall, makes to form the line contact between the O-ring conical surface 53 and the sealing sphere 54.If the center of the O-ring conical surface 53 and the central lines of air outlet, then the Line of contact between the O-ring conical surface 53 and the sealing sphere 54 is a circle, makes end cover 31 to be sealed in reliably on the sealed step 55.
But, when the end cover 31 of valve rod 20 drive valve gaps turns to sealed step 55 places of air outlet, because the machining error of accumulation, the center of the O-ring conical surface 53 not necessarily just faces the center of the sealing sphere (real is rounded surface) 54 on the air outlet on the end cover; At this moment, because end cover 31 flexibly connects with valve rod 20, end cover 31 can carry out adaptive adjustment, as the center line inclination several angle of end cover 31 with respect to air outlet 12, Line of contact between the O-ring conical surface 53 and the sealing sphere 54 will become an ellipse, can reach good sealing effect this moment equally, further improved the reliability of sealing.
Shown in Fig. 2,3, in above preferred embodiment, a chamber 38 can be set between capping 32 and end cover 31, the head 36 of link is positioned at this chamber 38, and the head 36 of this link is movable in this chamber 38, can form flexible connection with valve rod 20 thereby form end cover 31.This chamber 38 can be the groove of offering in capping 32, also can be to be positioned at the through hole counterbore that through hole 34 places are provided with on the end cover.Because capping 32 sealings are arranged on through hole 34 places, make gas can not leak from the gap of connecting screw rod.
Flexible connection between link head 36 and the end cover 31 can also be other structural types, as shown in Figure 5, through hole is not set on the end cover 31, but capping 32 is fixedly installed on the end cover 31 near on the side of valve rod 20 1 sides, through hole 34 is set in the center of capping 32; The through hole 34 that the tail end 35 of link is passed in the capping is fixedly connected on the valve rod 20, be provided with the chamber 38 of ccontaining link head 36 between same capping 32 and the end cover 31, because link head 36 sizes are greater than through hole 34 apertures, the head 36 of link just is limited in activity in the chamber 38 like this, make end cover 31 and link 33 flexibly connect, promptly flexibly connect with valve rod 20.Can utilize this flexible connection to realize the self adaption adjustment of end cover equally, reach the reliable sealing effect.
In the above-described embodiments, owing to be mingled with a lot of fine particles in the high-temperature gas usually, these fine particles are easy to be brought into gap between chamber 38, link 33 and the through hole 34 between end cover and the capping by gas.And when end cover 31 was pressed on sealed step 55 places of air outlet inwall by the side 25 of valve rod, valve rod side 25 was pressed on through hole 34 the other ends.The size that the valve rod side is set makes valve rod side 25 can cover through hole 34 greater than through hole 34 apertures, prevents that fine particle from entering in the through hole.Valve rod side 25 preferably is set for spherical, makes to form the line contact between valve rod side 25 and the through hole 34.When the center line of through hole 34 and valve rod side 25 decentraction, spherical surface still can form circular Line of contact with through hole.When valve rod passes torque to end cover 31, the Line of contact of this circle make end cover stressed evenly, thereby can be sealed in the place, air outlet more reliably.
In the above-described embodiments, preferably will a seal ring 14 that detachably is fixed on 12 madial walls of air outlet be set on the air outlet 12, sealing ring 14 is an annular, its internal diameter size is identical with the air outlet, and the size less than the madial wall of the chamber of confession valve gap rotation in the valve body forms above-mentioned sealed step 55.At seal ring 14 the sealing sphere 54 that the O-ring conical surface 53 with valve gap matches and forms sealing surface is set on the end face of an end of valve gap.Sealing ring 14 can be set to be fixed on 12 madial walls of air outlet by a locking collar 15, particularly as Fig. 1, shown in 3, valve body air outlet 12 is set to step hole, promptly the hole wall near the valve gap place is provided with step 16, the maximum inner diameter of this step hole 16 and seal ring 14 external diameters are complementary, make seal ring 14 just in time can put into this step 16 from the air outlet, the minimum diameter of this step hole 16 is greater than the internal diameter of seal ring 14, making sealing sphere 54 on the seal ring 14 can exceed the valve body madial wall at step hole 16 places matches with the O-ring conical surface 53 on the valve gap, locking collar 15 outer surfaces are set to be threaded with the air outlet madial wall, and the diameter of bore that should lock collar is identical with the internal diameter of seal ring, seal ring 14 is put into air outlet 12, and reinstalling locking collar 15 can be fixed on seal ring 14 in the air outlet firmly.When valve body used the back that wearing and tearing take place for a long time, removable locking collar was changed seal ring, to reach reliable sealing effect.
The above embodiment has only expressed several mode of execution of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (6)
1. the sealing configuration of a low pressure drop high-temperature gas changing-over valve, comprise valve body that an end is provided with suction port, a other end and is provided with two air outlets, rotate the valve rod that is arranged in the valve body, two be connected on the valve rod and and rotate salable valve gap at corresponding with it place, air outlet with valve rod, it is characterized in that described air outlet madial wall is positioned at valve gap and the place of being sealed and matched, air outlet is provided with an inwardly protruded sealed step; The outer rim of the described valve gap formation sealing surface that matches with described sealed step, the sealing surface of described valve gap outer rim is set to the O-ring conical surface; The sealing surface at described sealed step place is set to the sealing sphere that is complementary with the described O-ring conical surface; The link that described valve gap comprises that the center is provided with that the end cover of through hole, afterbody pass that described through hole is fixedlyed connected with described valve rod and head and end cover flexibly connect, be fixed on the end cover and the capping of the head seal of described link in described through hole; The outer rim of described end cover matches with described sealed step and forms the described O-ring conical surface.
2. according to the sealing configuration of the described low pressure drop high-temperature gas changing-over valve of claim 1, it is characterized in that, described sealed step is formed by the seal ring that detachably is fixed on the madial wall of valve body air outlet, and described sealing sphere is arranged on the seal ring on the end face of described valve gap one end.
3. according to the sealing configuration of the described low pressure drop high-temperature gas changing-over valve of claim 2, it is characterized in that, the O-ring conical surface place of corresponding valve gap is provided with step hole on the madial wall of described valve body air outlet, and described seal ring is fixed on described step hole place by the locking collar that is arranged on the place, air outlet.
4. according to the sealing configuration of the described low pressure drop high-temperature gas changing-over valve of claim 1, it is characterized in that, the head of described link is provided with the shaft shoulder that is complementary with described through hole, is positioned at the through hole between described capping and the end cover and is provided with the chamber that supplies described link head movement.
5. according to the sealing configuration of the described low pressure drop high-temperature gas changing-over valve of claim 4, it is characterized in that described link afterbody is connected with described threaded stem.
6. according to the sealing configuration of the described low pressure drop high-temperature gas changing-over valve of claim 4, it is characterized in that, described valve rod and described link afterbody fixed connection place be set to through hole be complementary spherical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100668652A CN101265986B (en) | 2008-04-25 | 2008-04-25 | Low pressure drop high-temperature gas changing-over valve sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100668652A CN101265986B (en) | 2008-04-25 | 2008-04-25 | Low pressure drop high-temperature gas changing-over valve sealing structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101265986A CN101265986A (en) | 2008-09-17 |
| CN101265986B true CN101265986B (en) | 2010-08-25 |
Family
ID=39988584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100668652A Expired - Fee Related CN101265986B (en) | 2008-04-25 | 2008-04-25 | Low pressure drop high-temperature gas changing-over valve sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101265986B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014106010A1 (en) | 2014-04-29 | 2015-10-29 | Sig Technology Ag | Device for controlling or regulating the flow rate and / or flow direction of fluids |
| CN104896138A (en) * | 2015-06-10 | 2015-09-09 | 天津禾田电器有限公司 | Gas source distributor |
-
2008
- 2008-04-25 CN CN2008100668652A patent/CN101265986B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101265986A (en) | 2008-09-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3213809U (en) | Self-compensated sealed conical valve core and assembled valve as a set | |
| CN101265986B (en) | Low pressure drop high-temperature gas changing-over valve sealing structure | |
| WO2021023006A1 (en) | Water segregator | |
| CN207701898U (en) | Flow-rate adjustment static balancing valve | |
| CN201606504U (en) | Hard sealing angle valve | |
| CN100561025C (en) | Low pressure drop high-temperature gas changing-over valve | |
| CN209800775U (en) | Safe sealing angle valve | |
| CN202371180U (en) | Ultrahigh pressure detecting stop valve | |
| CN201487239U (en) | right-angle valve | |
| CN208619707U (en) | A kind of cone sealing stop valve | |
| CN206290725U (en) | Four eccentric sealed butterfly valve constructions | |
| CN203743447U (en) | Stop valve | |
| CN109654244A (en) | Mud overflow valve | |
| CN201273377Y (en) | Gas valve | |
| CN206347116U (en) | Stop valve is opened soon | |
| CN102563091A (en) | Ultrahigh pressure detection stop valve | |
| CN210218836U (en) | Self-closing valve | |
| CN210600307U (en) | Y-shaped two-opening steam valve | |
| CN220540366U (en) | Multidirectional switching valve | |
| CN218510191U (en) | Needle valve | |
| CN219639449U (en) | Anti-scouring stop valve with double sealing effect | |
| CN215334572U (en) | Water stop valve with excellent sealing performance | |
| CN214404708U (en) | Indoor fire hydrant of rotation type decompression steady voltage | |
| CN217683718U (en) | Universal angle valve without valve core | |
| CN215486909U (en) | Emergency three-way joint for cylinder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHENZHEN VICKERY INVESTMENT ADVISORY CO., LTD. Free format text: FORMER OWNER: LANGDA TECHNOLOGY (SHENZHEN) CO., LTD. Effective date: 20121122 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 518107 SHENZHEN, GUANGDONG PROVINCE TO: 518000 SHENZHEN, GUANGDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20121122 Address after: 518000 Guangdong city of Shenzhen province Futian District news Road and King Road Interchange orpine name Park (two) 3 804 Patentee after: Shenzhen Weikerui Investment Consulting Co., Ltd. Address before: 518107, Guangdong Province, Shenzhen, Gongming Town, Baoan District Village building, Ming Road junction Chen Chen Industrial Park, B3 building, 2 floor Patentee before: Guide Trend Technology (Shenzhen) Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100825 Termination date: 20130425 |