CN104165235B - A kind of ball valve metal seat valve with elastic compensating function - Google Patents
A kind of ball valve metal seat valve with elastic compensating function Download PDFInfo
- Publication number
- CN104165235B CN104165235B CN201410373769.8A CN201410373769A CN104165235B CN 104165235 B CN104165235 B CN 104165235B CN 201410373769 A CN201410373769 A CN 201410373769A CN 104165235 B CN104165235 B CN 104165235B
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- China
- Prior art keywords
- valve
- supporter
- spheroid
- sealing
- valve seat
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Classifications
-
- 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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0605—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor with particular plug arrangements, e.g. particular shape or built-in means
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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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
-
- 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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
- F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
- F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
- F16K5/201—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces with the housing or parts of the housing mechanically pressing the seal against the plug
- F16K5/202—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces with the housing or parts of the housing mechanically pressing the seal against the plug with conical surfaces
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses a kind of ball valve metal seat valve with elastic compensating function, its major technique it is critical only that：Outlet valve seat component includes that valve body and supporter, valve body and supporter are combined with screw thread and weld seam；It is provided with valve body and bends towards that supporter direction, thickness is moderately thinning and elastic wall that there is certain elastic deformability, elastic wall outwards has tapered extension, sealing surface is provided with, when the supporter front end on rear side of tapered extension is provided with the supporting conical surface and free state fitted with tapered extension from outside to inside, has the middle cone of smaller spacing and tapered extension between.Its advantage is：Outlet valve seat sealing surface position has stronger elastic compensating ability, and enough compensation can be provided when spheroid precision has error, uneven wear, high temperature deformation, and can be by pressure medium auxiliary seal；Lasting, reliable sealing property that valve has, while also reducing the processing of sphere difficulty and manufacturing cost.
Description
Technical field
The present invention relates to a kind of valve mechanism, and in particular to a kind of metal seat valve structure of hard seal ball valve.
Background technology
Ball valve is the class valve using widely, and with opening and closing that speed is fast, after valve opening, flow resistance and crushing are little, close
Front cover will not be washed away by flow media in opening, sealing surface has the advantages that self-purification capacity when closing.It is special at some
When operating mode, such as worst hot case and medium are rich in hard particles, use requirement can not be met using valve seat made by engineering plastics
And need to adopt metal seat valve, this kind of hard seal ball valve supporting demand in recent years is more and more, application is more and more extensive, such as exists
In Large Copacity thermal power generation unit, the hard seal ball valve using metal seat valve is hydrophobic in main steam, reheated steam, to idle discharge vapour,
The aspects such as feedwater, desuperheating water cut-off, stove water row Mian, steam superpressure safety relief have relatively broad application.This kind of hard sealing
Some products in ball valve, with more harsh operating mode use requirement：Operating pressure is high and valve is mostly in High Pressure Difference
Normally off；Open and close number of times more or even more frequent.Due to closed mode often in High Pressure Difference, therefore have very high to valve
Seal request, because valve once has leakage be formed more serious erosion damage, some applying working conditions quickly to sealing surface
Cavitation damage can also be produced after lower generation leakage；Open and close and relatively frequently then the wear-resistant of use reliability and sealing surface of valve is resisted
Scratch ability proposes higher requirement.
Existing hard seal ball valve product, the metal seat valve of outlet side generally individually using all-in-one-piece full rigidity structure (see
Fig. 1).As the valve seat of this full rigidity structure does not have any compensation ability, therefore in order that valve to the identical property of sealing pair
Door can reach seal request after closing, need to make spheroid include that the aspects such as circularity, dimensional accuracy reach very in machining accuracy
High requirement, and the facing-up of carefulness need to be carried out before assembly to spheroid and sealing surface of seat.What power plant was used at present is this kind of hard
Seal ball-valve product, can substantially meet use requirement, the product of mainly external several brands.From the manufacture of product and
From the point of view of the situation of use, there are following several weak points in this kind of hard seal ball valve product：1st, because all-in-one-piece complete
Rigid metal valve seat itself does not have compensation ability, therefore the processing of spheroid and valve seat needs to reach very high precision, this nothing
Doubting to increase manufacture difficulty and production cost, and the accuracy of manufacture of engineering goods is difficult to ceaselessly improve, then good
, can all there is trueness error in the part processed by manufacturing process and equipment；2nd, the spheroid and sealing surface of seat of ball valve is being opened and closed
During, be different in the differing heights andfrictional conditions of vertical direction, i.e. the abrasion of spheroid and sealing surface of seat is uneven
Even abrasion；Although in addition, the position that spheroid is matched with sealing surface of seat when closed is carried out with sealing surface of seat before assembling
Facing-up, but still also there is certain error in remaining position of spherome surface, and this also causes spheroid and sealing surface of seat opening and closing entirely
The abrasion of process becomes uneven wear.Uneven wear will cause valve, and sealing property declines even in use for some time
There is more serious leakage；3rd, in for small-bore hard seal ball valve, as the rigidity of valve seat is big therefore which is to sealing
The error of secondary identical property does not have compensation ability, when valve is used in worst hot case, even if valve seat and spheroid are because of high temperature
Produced deformation is more small, it is also possible to valve can be caused leakage occur；4th, when leaking occurs in sealing pair somewhere, let out
, because of the volume sealing surface temperature drop that drastically swelling heat absorption can make near leakage point, unbalanced temperature change is again for the medium for spilling
Sealing surface can be caused to produce inhomogeneous deformation so as to aggravate leakage, this is the relief valve or even some used under current worst hot case
The reason for sealing surface of the stop valve of worst hot case will adopt the thermal balance valve flap structure with compensation ability, for worst hot case
For the hard seal ball valve for using, this problem is equally existed；5th, later stage Jing of the valve seat and spheroid of hard seal ball valve in processing
Went through thermal spray process --- sealing surface supersonic spray coating tungsten carbide, can there is certain internal stress, therefore reenter high temperature
The probability that stress discharges and produces certain deformation during state is larger.
The structure that a kind of above-mentioned weak point for existing for prior art is improved is as shown in Fig. 2 which is carried out
Improvement be：An annular groove is provided with sealing surface in the endoporus of outlet valve seat (6), valve seat to be allowed near sealing surface
Position there is certain elastic compensating ability.From the point of view of practical application effect, this structure fails to generation and disclosure satisfy that make
With the compensation ability and effect that need, its reason is：In order to ensure the intensity of valve seat and use reliability, need on the left of elastic groove
Keep enough thickness, the depth of groove can not be too deep, therefore the position on the left of valve seat elastic groove near sealing surface is difficult to obtain
Enough to elastic deformation and compensation ability；Further, since the arc sealing surface of valve seat by sealing surface outer diameter zone relative to
Its bending moment arm of elastic groove bottom is close to zero, almost can not be deformed completely and displacement, and which is to the drag foot produced by spheroid
So that spheroid is difficult to produce opposite displacement and makes the inner side of sealing surface of seat produce flexural deformation, thus this structure with it is aforementioned
All-in-one-piece full rigidity valve seat construction it is not significantly different in using effect.Moreover, it is assumed that this valve seat construction
It is to produce diastrophic after sealing surface position is pressurized, but this diastrophic result will cause the identical shape of sealing pair
State deteriorates：Face contact becomes linear contact lay, and the linear contact lay fit-state of the high specific pressure of sealing pair is to hard seal ball valve sealing surface
Injury will be that therefore the tungsten carbide strengthening layer of fatal spherome surface spraying easily produces destruction or peel off, cause valve
It is quickly invalidated.
The content of the invention
For the above-mentioned weak point for overcoming prior art and existing for structure, the present invention propose it is a kind of have it is enough
Elastic deformation and compensation ability, the sealing property of valve can be effectively improved, the hard sealing of more lasting sealing life is kept
The metallic elastic valve seat construction of ball valve.
To achieve these goals, the present invention is employed the following technical solutions：
A kind of ball valve metal seat valve with elastic compensating function, the innovation for being carried out and improvement are mainly for outlet valve
, its main technical schemes is：Outlet side adopts outlet valve seat component, described outlet valve seat component to include valve body and support
The part of the revolution build that line overlaps centered on body, valve body and supporter, position relationship is inside and outside configuration, valve body are located at
Inner side, supporter be located at outside, both with threaded engagement, and the end away from spheroid direction be provided with welding will both
The weld seam being combined as a whole；In the side of the close spheroid of valve body, be provided with bend towards supporter direction, thickness it is moderately thinning and
Elastic wall with certain elastic deformability, elastic wall are stretched out with certain taper, in the close ball of the tapered extension
, there is a sealing convex portion for protruding from tapered extension surface in the stage casing of body side, the surface of the sealing convex portion after mounting with spheroid
Fit, be the sealing surface of outlet valve seat component；The opposite side of the outside tapered extension of elastic wall is that face is only leaned in taper, is being propped up
Outermost of the support body near taper only by face one end, is had the one section of conical surface-supporting conical surface only fitted by face with taper, and is being supported
On body, the inner side of the supporting conical surface, the dorsal part of sealing convex portion, separately have the one section of conical surface-middle cone, when outlet valve seat component is not
During the free state assembled with spheroid and other parts, described middle cone and taper only by have between face it is less between
Away from.
As the refinement to above-mentioned technical proposal, the present invention additional following technical scheme：On supporter, uniform point
Cloth several squeeze on cylindrical, through holes of cavity that is leading between elastic wall and supporter；In the outer end of through hole, supporter
It is cylindrical on, be provided with a ring groove, the outside opening of all through holes is respectively positioned in the annular groove.
In order to further improve product performance, the present invention also adds following technical schemes：In the back of the body of import valve seat
Side is provided with the sealing ring of single wedge shape, and the cylindrical and valve body inner bore of sealing ring coordinates, sealing ring towards spheroid direction one end with
Fitted with taper seat between import valve seat, the other end of sealing ring is provided with pressure ring, and a side end face of pressure ring is pressed on sealing ring
On end face, pressure ring other end planar outboard is provided with disk spring.
The invention has the beneficial effects as follows：By the application of above-mentioned technical proposal, have can outlet sealing surface of seat position
There are enough elastic deformations and compensation ability, there is certain error, open and close certain number of times rear valve base and ball in the spheroid accuracy of manufacture
There is the benefit that satisfaction needs can be provided when uneven wear, worst hot case lower valve base and spheroid have certain deformation in body surface face
Repay, and can be by pressure medium auxiliary seal, while also reducing the processing of sphere difficulty and manufacturing cost；In addition by improve into
The sealability of mouth side valve seat location, can make valve obtain more lasting, reliable sealing property.
Description of the drawings
Fig. 1 is prior art --- hard seal ball valve schematic diagram of the outlet valve seat using all-in-one-piece full rigidity structure.
Fig. 2 is prior art --- outlet valve seat endoporus increases the hard seal ball valve schematic diagram of elastic groove.
Fig. 3 is the schematic diagram of the embodiment of the present invention.
Fig. 4 is the partial enlarged drawing of outlet valve seat component left end before valve assembling of Fig. 3.
In figure, 1, valve body；2nd, import valve seat；3rd, disk spring；4th, spheroid；5th, valve rod；6th, outlet valve seat；7th, outlet valve seat
Component；7-1, valve body；7-1-1, sealing convex portion；7-1-2, elastic wall；7-1-3, taper are only by face；7-2, supporter；7-2-
1st, middle cone；7-2-2, the supporting conical surface；8th, pressure ring；9th, sealing ring.
Specific embodiment
With reference to the accompanying drawings and examples technical scheme is further elaborated.
It is the schematic diagram of the present embodiment as shown in Figure 3.Valve rod (5) is connected with spheroid (4) by flat gesture, a left side for spheroid (4)
Side is import valve seat (2), and right side is outlet valve seat component (7)；The sphere and outlet valve seat component (7), import valve seat of spheroid (4)
(2) through surface Hardening Treatment, the wherein surface of spheroid (4) adopts supersonic spray coating tungsten carbide to the sealing surface on.Described
Outlet valve seat component (7) is made up of valve body (7-1) and supporter (7-2) two parts, valve body (7-1) and supporter (7-2)
Centered on line overlap, position relationship be inside and outside configuration revolution build part, valve body (7-1) is positioned at inner side supporter
(7-2) positioned at outside, both with threaded engagement, and both away from the right-hand member in spheroid (4) direction carry out seal weld and by two
Person is combined as a whole.In the side of the close spheroid (4) of valve body (7-1), it is provided with and bends towards supporter (7-2) direction, thickness
Appropriateness is thinning and elastic wall (7-1-2) that have certain elastic deformability, and elastic wall (7-1-2) is with cone that semi-cone angle is 45 °
Shape stretches out, and in the stage casing of close spheroid (4) side of the tapered extension, has the sealing for protruding from tapered extension surface
Convex portion (7-1-1), the surface of the sealing convex portion (7-1-1) are fitted with spheroid (4) after mounting, are outlet valve seat component (7)
Sealing surface, be the spherical zone surface that can be matched with spheroid (4) surface after sealing surface processing, before valve assembling can by its with
Spheroid (4) for assembling carries out appropriate facing-up using technique spheroid, to improve the sealing surface goodness of fit and roughness；Elastic wall
(7-1-2) opposite side of outside tapered extension only depends on face (7-1-3) for the taper that semi-cone angle is 45 °, at supporter (7-2)
Near taper outermost only by face (7-1-3) one end, there is the one section of conical surface-support cone only fitted by face (7-1-3) with taper
Face (7-2-2), and on supporter (7-2) inner side of the supporting conical surface (7-2-2), sealing convex portion (7-1-1) dorsal part, separately have
The one section of conical surface-middle cone (7-2-1), when outlet valve seat component (7) do not assembled with spheroid (4) and other parts from
By (as shown in Figure 4) during state, described middle cone (7-2-1) and taper only by have between face (7-1-3) t=0.07～
The gap of 0.10mm.
In the structure of the outlet valve seat component (7) proposed by above-mentioned technical proposal, the elastic wall of valve body (7-1) left end
(7-1-2) with its tapered extension, the statically indeterminate beam that two ends are supported by, the body on the right side of valve body (7-1) can be regarded as
Point constitute the fixing end of the statically indeterminate beam, and the supporting conical surface (7-2-2) of supporter (7-2) left end then to constitute the statically indeterminate beam another
The movable hinged shoe of one end；Valve in working order when, the thrust of disk spring (3) is acted on spheroid (4) plus medium
The load that formed of pressure, promote spheroid (4) by seal convex portion (7-1-1) act on can make on the statically indeterminate beam its to
Middle cone (7-2-1) direction of supporter (7-2) deforms, so that outlet valve seat component (7) is provided with satisfaction sealing
The elastic compensating ability of needs.
In the prior art (Fig. 2) of the elastic groove that annular is arranged on outlet valve seat endoporus, in order to prevent on the left of elastic groove
Excessive plastic bending modification is produced when stress is larger to sealing surface region makes valve seat fail, and needs between sealing surface on the left of groove
Keep the depth of enough thickness and groove also relatively shallower, thus sealing surface of seat position be difficult to obtain enough elastic deformations and
Compensation ability, makes elastic compensating structure play a role.And in the present invention, as the taper of valve body (7-1) is only by face
(7-1-3) gap (0.07～0.10mm) for arranging and the middle cone (7-2-1) of supporter (7-2) between has defined valve
Maximum distortion displacement of the sealing convex portion (7-1-1) of pedestal (7-1) when pressurized, it is impossible to occur more than predetermined deformation amount
Excessive deformation and destruction, therefore outlet valve seat component (7) can be according to the bullet most effectively provided required for guarantee permanent seal
Property deformation and the requirement of compensation ability determining the suitable thickness and size at sealing surface position so that valve obtains reliable close
Sealing property.Valve seat has stronger elastic compensating ability, except the sealing property of valve can be significantly enhanced, spheroid system is reduced
Outside manufacturing accuracy is required, for the valve for opening and closing more abrasion and uneven wear that number of times relatively frequently causes sealing pair comes
Say, the stronger elastic compensating ability of valve seat also contributes to the sealing life that valve remains more lasting.
Why to also be welded in right-hand member in addition to threaded connection between valve body (7-1) and supporter (7-2),
It is because for outlet valve seat component (7), the gap between valve body (7-1) and supporter (7-2) is that a leakage is logical
Road, it is therefore desirable to carry out seal weld.
In the technical scheme of the present embodiment, also it is uniformly arranged on supporter (7-2) several squeezing on cylindrical, logical
To the through hole of the cavity between elastic wall (7-1-2) and supporter (7-2)；The outer end of through hole, supporter (7-2) it is cylindrical
On, a ring groove is set, the outside opening of all through holes is respectively positioned in the annular groove.After valve closing, medium passes through supporter (7-
2) cavity that the annular groove and through hole on is entered between elastic wall (7-1-2) and supporter (7-2), pressure medium act on elastic arm
(7-1-2) and taper only by the thrust produced by face (7-1-3) surface can auxiliary valve seat sealing surface reach better seal shape
State.
Additionally, the sealing property in order to improve valve, arranges the soft graphite pressure of single wedge shape in the dorsal part of import valve seat (2)
The sealing ring (9) of system, cylindrical and valve body (1) inner hole of sealing ring (9), the one end of sealing ring (9) towards spheroid (4) direction
Fitted with taper seat between import valve seat (2), the other end of sealing ring (9) is provided with pressure ring (8), a side of pressure ring (8)
Face is pressed on sealing ring (9) end face, and pressure ring (8) other end planar outboard is provided with disk spring (3).
In Fig. 1, Fig. 2, not using the sealing structure at import valve seat as inlet side designing, inlet side and lumen are simultaneously
Do not separate completely, the sealing of valve ensures completely by outlet side valve seat；And in the present invention, in the dorsal part of import valve seat (2)
Sealing ring (9) is set, valve inlet passage and lumen is separated by the sealing surface and sealing ring (9) of import valve seat (2), is made to lead to
Cross sealing surface only possible kiss for producing micro-leakage or even sealing surface and spheroid (4) in import valve seat (2) from import to lumen
Conjunction property is reached entirely without leak condition when preferable, so that import valve seat and outlet valve seat can constitute the dual fail-safe of valve seal,
Greatly improve the sealing property and sealing reliability of valve.
Technical scheme is made to illustrate above in association with drawings and Examples, but these explanations can not have been managed
Solve to limit the scope of the present invention.Those skilled in the art should know, the present invention does not receive above-described embodiment and attached
The restriction of figure, its protection domain are defined by appending claims, any without departing from claims of the present invention institute circle
The technical scheme formed by various changes in fixed scope, modification, all without departing from the spirit and technical spirit of the present invention, still
Can so belong within scope of the presently claimed invention.
Claims (3)
1. a kind of ball valve metal seat valve with elastic compensating function, it includes spheroid (4), outlet valve seat component (7), spheroid
(4) the sealing surface on sphere and outlet valve seat component (7) is the hardened surface through surface Hardening Treatment, it is characterised in that：
Described outlet valve seat component (7) includes that valve body (7-1) and supporter (7-2), valve body (7-1) and supporter (7-2) are
The part of the revolution build that centrage overlaps, position relationship is inside and outside configuration, valve body (7-1) is positioned at inner side, supporter (7-
2) positioned at outside, both with threaded engagement, and the end away from spheroid (4) direction be provided with welding both are combined into
The weld seam of one；In the side of the close spheroid (4) of valve body (7-1), be provided with bend towards supporter (7-2) direction, thickness fit
Elastic wall (7-1-2) thinning and that there is certain elastic deformability is spent, elastic wall (7-1-2) is stretched out with certain taper,
In the stage casing of close spheroid (4) side of the tapered extension, there is the sealing convex portion (7-1- for protruding from tapered extension surface
1), the surface of the sealing convex portion (7-1-1) is fitted with spheroid (4) after mounting, is the sealing surface of outlet valve seat component (7)；
The opposite side of the outside tapered extension of elastic wall (7-1-2) is that taper only depends on face (7-1-3), in supporter (7-2) near cone
Shape outermost only by face (7-1-3) one end, has the one section of conical surface-supporting conical surface (7-2- only fitted by face (7-1-3) with taper
2) inner side of the supporting conical surface (7-2-2), the dorsal part of sealing convex portion (7-1-1), separately have one section of cone, and on supporter (7-2)
Face-middle cone (7-2-1), when outlet valve seat component (7) is in the free state do not assembled with spheroid (4) and other parts
When, described middle cone (7-2-1) and taper are only by having less spacing between face (7-1-3).
2. the ball valve metal seat valve with elastic compensating function according to claim 1, it is characterised in that：In supporter
(7-2), on, several cavitys squeezing on cylindrical, leading between elastic wall (7-1-2) and supporter (7-2) are uniform-distribution with
Through hole；The outer end of through hole, supporter (7-2) it is cylindrical on, be provided with a ring groove, the equal position of the outside opening of all through holes
In the annular groove.
3. the ball valve metal seat valve with elastic compensating function according to claim 1, it is characterised in that：In import valve seat
(2) dorsal part is provided with the sealing ring (9) of single wedge shape, cylindrical and valve body (1) inner hole of sealing ring (9), sealing ring (9) court
To being fitted with taper seat between the one end in spheroid (4) direction and import valve seat (2), the other end of sealing ring (9) is provided with pressure ring
(8), a side end face of pressure ring (8) is pressed on sealing ring (9) end face, and pressure ring (8) other end planar outboard is provided with dish-shaped bullet
Spring (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410373769.8A CN104165235B (en) | 2014-07-31 | 2014-07-31 | A kind of ball valve metal seat valve with elastic compensating function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410373769.8A CN104165235B (en) | 2014-07-31 | 2014-07-31 | A kind of ball valve metal seat valve with elastic compensating function |
Publications (2)
| Publication Number | Publication Date |
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| CN104165235A CN104165235A (en) | 2014-11-26 |
| CN104165235B true CN104165235B (en) | 2017-04-05 |
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| CN201410373769.8A Expired - Fee Related CN104165235B (en) | 2014-07-31 | 2014-07-31 | A kind of ball valve metal seat valve with elastic compensating function |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105526376B (en) * | 2016-02-01 | 2018-02-06 | 无锡智能自控工程股份有限公司 | Fixing ball valve dynamic load closed type bivalve holder structure |
| CN105508647A (en) * | 2016-02-01 | 2016-04-20 | 无锡智能自控工程股份有限公司 | Elastic-seal valve seat structure of fixed ball valve |
| JP2017173200A (en) * | 2016-03-25 | 2017-09-28 | 矢崎エナジーシステム株式会社 | Straight tube type gas meter |
| DE102016223498A1 (en) * | 2016-11-28 | 2018-05-30 | Volkswagen Aktiengesellschaft | Sealing package and valve assembly with such a sealing package |
| JP7574010B2 (en) * | 2020-07-29 | 2024-10-28 | 株式会社ミクニ | Rotary Valve Device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4262688A (en) * | 1979-05-25 | 1981-04-21 | Acf Industries, Incorporated | Metal seat assemblies for valves |
| US5259590A (en) * | 1992-07-20 | 1993-11-09 | Grove Valve & Regulator Company | Valve seat for high temperature valve |
| CN201787120U (en) * | 2010-09-28 | 2011-04-06 | 浙江中德自控阀门有限公司 | High temperature ball valve packing seal structure |
| CN102155555A (en) * | 2011-04-19 | 2011-08-17 | 浙江超达阀门股份有限公司 | Valve seat structure of metal hard sealing ball valve |
| CN102853104A (en) * | 2012-08-11 | 2013-01-02 | 张业宝 | Metal hard sealing ball valve base |
| CN203146888U (en) * | 2013-01-24 | 2013-08-21 | 上海纳福希阀门有限公司 | Valve seat for metal-seated ball valve with sealing face of lip-type elastic compensation structure |
| CN203189780U (en) * | 2013-05-02 | 2013-09-11 | 陈少梅 | High-pressure self-sealing spherical valve |
| CN204083340U (en) * | 2014-07-31 | 2015-01-07 | 章华 | A kind of ball valve metal seat valve with elastic compensating function |
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- 2014-07-31 CN CN201410373769.8A patent/CN104165235B/en not_active Expired - Fee Related
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