CN201982707U - Unfurled metal-sealed ball valve - Google Patents
Unfurled metal-sealed ball valve Download PDFInfo
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- CN201982707U CN201982707U CN2010206567338U CN201020656733U CN201982707U CN 201982707 U CN201982707 U CN 201982707U CN 2010206567338 U CN2010206567338 U CN 2010206567338U CN 201020656733 U CN201020656733 U CN 201020656733U CN 201982707 U CN201982707 U CN 201982707U
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Abstract
An unfurled metal-sealed ball valve comprises a sphere, which is in a two-piece structure; the center of the sphere is provided with holes accommodating a valve rod circular conical surface and cooperating with a taper plug; the two taper holes stretch along an identical direction of a passageway; Belleville springs are disposed on the upper end and lower end of the sphere center respectively; the upper end of the sphere is provided with a transverse straight notch for accommodating a pin, which is fixedly connected with a hole in the valve rod circular conical surface; a coiled spring has one end contacted with the Belleville springs through the valve rod and the other end disposed in a step hole in the middle of a valve body; the top of the valve body is an annular boss, which is provided with a through-hole cooperating with a transposition sleeve , a cylinder protruding outward on the edge, and a thread inside for meshing with a plug screw; the periphery of a lower middle portion of the transposition sleeve is provided with ring notches in a symmetrical manner, with the ring notches allowing 90-degree connection with round pins, wherein a range being around 70 degrees is provided with a rectilinear segment and a range being around 20 degrees is provided with a downward oblique line segment; and the upper end of the transposition sleeve is provided with the thread inside for the connection with the thread in the valve body.
Description
Technical field
The invention belongs to ball valve, especially relate to poppet stem and the design that struts the secondary aspect of ball seal.
Background technique
Ball valve has a lot of advantages, mainly is that spool is a spheroid that cavity is arranged, and does 90 ° of rotations by valve rod control spheroid, make valve opening or close because fluid resistance is little, switch rapidly, convenient, long, high having obtained of reliability of life-span used widely.
The seal form of existing ball valve is varied, concludes and gets up roughly to have following two kinds.
1, the common floating ball valve of soft face seal
The characteristics of common valve seat globe valve are: under pretightening force or fluid pressure action, seat material mostly is special plastics, wait as PEEKP (polyether-ether-ketone) PTFE (poly-tetrafluoro hexene) and to make to satisfy serviceability temperature and pressure firmlyer relatively with the bigger plastic materials of rigidity, utilize its intrinsic elastic characteristic and spheroid to compress, and make seat material produce the resilient plastic distortion and reach sealing, its sealing effect depends on valve seat under the effect of hydrodynamic pressure or pretightening force, can compensate the out of roundness of spheroid and the degree of surface microscopic injustice.In addition, after the ball valve assembling and setting is good, pretightening force on the sealing surface is just fixing, its shortcoming mainly is, but after ball valve uses a period of time, because the wearing and tearing of valve seat, and the plasticity residual deformation, the valve seat that fits tightly and spheroid will be gradually lax, seal pressure also will reduce gradually and seepage take place.
Be subjected to the restriction of seat material heatproof, above-mentioned ball valve is generally only used lower pressure (about 1.6Mpa) and lower temperature (below 200 °) work down.
2, stiff dough sealing High Temperature High Pressure ball valve
The characteristics of stiff dough sealing high-temperature ball valve are: valve body, spheroid and valve seat all are to make with metallic material, valve seat is metal or heat resisting alloy, seat material adopts the advantage of metal to metal seal pair to be: the Applicable temperature scope is wide, the thermal expansion coefficient of various metallic material is more or less the same, as long as select for use proper, can reach basically identical, help coordinating temperature deformation.Shortcoming is the metal material hardness height, the specific pressure that reaches sealing is also high, in the lower occasion of pressure, be difficult to reach the effect of sealing by the pressure of fluid, even if adopt pretightening force to reach sealing, but because of seal pressure is bigger, the keying torque of ball valve is also big, the wearing and tearing of sealing pair are fast more, and the working life of valve is not high.
Because the factor that switching torque increases, by manual operation is the thing of comparison difficulty, so above-mentioned ball valve generally mostly is the electronic or pneumatic valve actuator of peripheral hardware, industry personnel know, the meeting that valve actuator has is than valve price height, not every application all needs this equipment, and often sometimes not stinting increases the selection of cost and just do something against one's will.
In addition, ball valve does not make us the adjustability felt quite pleased so far, therefore, when valve seat begins to leak owing to excessive wear, just must change or keep in repair this valve.
Chinese invention patent discloses a kind of " double-wedge type semi-spherical ball valve " 981168000, the Sealing spheroid of this valve is that two wedge-type hemisphere are formed, the wedge-type face that the wedge-type groove and the valve rod on the top of ball are not held cooperates composition, utilize the pressure of the pretightening force of spring and fluid to guarantee the sealability of valve, simple in structure, but, only depend on the pressure of its fluid to guarantee that it is very insecure that the valve long term seal is not leaked sometimes because dielectric gas, liquid, solid etc. are complicated and changeable in the commercial plant pipeline.
Chinese patent application number is that 200310108434.5 publication numbers are that CN1614271A has proposed elastic ball structure ball valve and mainly supports device elastic sphere valve seat combination by the valve rod in the valve pocket and form, there is the runner hole that adapts with the ball valve through hole centre of elastic sphere, under side, locate flexible distortion groove, notch inclines down, there is the disconnection groove upper end, and there is centering spindle the bottom.Elastic sphere holds together device with support and is connected, and support is held together device and is connected with drive unit with the on-off structure of ball valve again.
The top elevator mechanism has been continued to use the screw rod monorail on-off structure in the track ball valve of U.S. track valve company, this structure has been used so far on the ball valve and stopcock the valve industry of China from introducing technology, advantage is conspicuous, but the shortcoming that exists is that the required stroke route of guiding groove is longer, pilot pin through the straight trough mouth when the flex point transition position of bend notch forms the jam phenomenon and take place, the linear surface of contact of the guiding groove of pilot pin cylndrical surface and valve rod is damage mutually easily, has influence on the quality of valve integral body.
Summary of the invention
Therefore, deficiency for existing ball valve technology, the purpose of this invention is to provide a kind of bracing type metal seal ball valve (being designated hereinafter simply as ball valve), and can keep reliability for a long time, the plurality of advantages of its existing existing soft face seal and stiff dough sealing, not only to part can be compensated the condition in gap because the leakage in valve that the prooving of valve seat or boost pressure cause has been created, and reduced the operation moment of torsion of valve.
According to embodiments of the invention, ball valve mainly contains valve body and connecting body, inner chamber at valve has the passage that transmits liquid medium, one has in this path and selectively to rotate between the position of valve opening and closing so that the spheroid that controlling liquid flows, this spheroid is symmetrical two-piece type structure after assembling, with the passage place of the valve body of the both sides of spheroid the sealing surface of the annular flange flange (appellation valve seat usually) that projection is arranged is slightly arranged respectively, to such an extent as to cooperate spheroid thereon pressured.
Connecting body, valve body are if the ring-shaped valve seats of the flange that common carbon steel member forms forms in the mode of built-up welding corrosion resistant material usually, stainless steel then directly processes sealing surface of seat on body, so that the supporting spheroid also seals this valve, spheroid can be smooth periphery, preferably form the metal of can the unnecessary welding unnecessary valuable wear-and corrosion-resistant of flange in both sides, so not only can save the cost of product, and the time that has reduced processing and ground.
Spheroid cuts from the centre in processing back fully, if the spheroid that forges, can for keeping the conformity of all sizes, should use in pairs for about 3～5mm if the width of groove generally can be chosen under the situation of 1～1.5mm precision-investment casting.
In order to guarantee that certain position relation is arranged when spheroid moves in valve body, do not hold in the bottom of valve body and to be provided with round platform, the center that the spheroid path is vertical has and holds conical surface and the following tapered plug that valve rod do not hold and cooperate consistent hole, two taper holes runner direction in the same way extend, and have mirror to feature, the hole of round platform forms mated condition closely in an end of tapered plug and the valve body.
One butterfly spring is located at the upper end of internal conical surface and horizontal straight trough mouth, another butterfly spring contacts with the top of round platform that protrude the valve body bottom with the bottom of tapered plug major part, opening rear spring power at ball valve can up lift spheroid slightly, so that breaking away from spheroid, tapered plug carries out next step closing motion, though being a very small upwards movement, this also can make it be unlikely to lose the proper up and down function that struts, when valve rod moves downward, the circular cone of valve rod head struts spheroid, simultaneously also carry-over moment on spheroid lower cone body, spheroid is returned on the sealing station of setting, and another benefit is that butterfly spring can guarantee that with contacting of spheroid two hemispheres remains a kind of similar complete state when assembling and operate all the time.
In addition, for valve convenient for assembly carries out smoothly, a helical spring contacts with butterfly spring by valve rod one end, and the other end places valve body middle bench hole, and butterfly spring up lifts and can be convenient to another hemispheroidal entering.
The both sides of spheroid upper end internal conical surface are useful on the horizontal straight trough mouth that holds straight pin, and the assembling back cooperatively interacts with rotating sphere with the straight trough mouth on spheroid top, and straight pin does not hold the hole on the conical surface to be connected with valve rod.Pin is not only cylindrical, and also rectangle (not shown) can decide according to the size of ball valve and the size and the purposes of pressure.
The top that valve body makes progress is an annular boss, and this boss wherein has a hole that connects to match with the transposition cover with the central position design that valve rod is connected with spheroid, the cylindrical body that has outside survey to stretch out at circumferential edge, and inner is the screw thread that is meshed with plug screw.
One end of straight pin places the annular groove of transposition cover, and the other end contacts with hole in the plug screw.
In the middle of the transposition cover by under the circumference of part on symmetrical design the orientation that is connected with straight pin be 90 ° of annular groove mouths, on 70 ° of scopes roughly, be a straightway wherein, 20 ° is downward oblique line section, the inside of upper end is the screw thread that is connected with valve rod, and unclamping behind the locking nut promptly can regulating valve stem and the position that seals each other of spheroid.
Two circular cones can make spheroid laterally strut suitable distance of displacement it is fitted tightly on the sealing surface of valve body annular flange flange when valve rod moves downward.
The bind mode of the others of this ball valve and common valve are basic identical, and those skilled in the art person necessarily knows these very much, so here also describe in detail with regard to unnecessary.
Can reach following effect by above-mentioned design
1. bracing type sealing configuration; Reduce the friction and wear of metal and metallic sealing section, can effectively improve the working life of ball valve.
2. simple in structure; The setting of spheroid butterfly spring up and down can make two hemispheres remain whole form, helps operation and sealing.
3. applicability is good, and is cheap for manufacturing cost; The last lower cone hole of spheroid and cooperating of cone, good from the centering performance, processing is comparatively easily convenient.
4. operational torque is little; The straight pin that two symmetries are installed is enclosed within the circular groove in transposition and cooperates for rolling, and friction factor is little.
5. easy to adjust; Need not complicated mechanism, behind valve seat and ball seal surface wear, can suitably regulate desired location by unclamping the upper end locking nut.
Description of drawings
In above-mentioned figure, then represent it is identical effect if any identical label.
Diagram major part sign indicating number number is: 1, valve body 2, connecting body 3, spheroid 4, valve rod 5, transposition cover 6, tapered plug 7, butterfly spring 8, pin 9, helical spring 10, straight pin 11, plug screw 12, handwheel 13, locking nut 14, round nut 15, runner
These and other objects advantage of the present invention is described in detail by following accompanying drawing.
Fig. 1 is the sectional view of bracing type metal seal ball valve of the present invention.
Fig. 2 is the perspective exploded view of Fig. 1.
Embodiment
According to embodiments of the invention, ball valve mainly contains valve body (1) and connecting body (2), inner chamber at valve has the passage (15) that transmits liquid medium, one has in this path and selectively to rotate between the position of valve opening and closing so that the spheroid (3) that controlling liquid flows, this spheroid (3) is symmetrical two-piece type structure, with the passage place of the valve body (1) of the both sides of spheroid (3) sealing surface of the annular flange flange (1-1) (appellation valve seat usually) that projection is arranged is slightly arranged respectively, to such an extent as to cooperate the sealing surface (3-4) of spheroid (3) thereon pressured.
In order to guarantee that certain position relation is arranged when spheroid (3) moves in valve body (1), do not hold in the bottom of valve body (1) and to be provided with round platform (1-2), the vertical center of spheroid (3) has and holds conical surface (4-2) and the tapered plug (6) that valve rod (4) do not hold and cooperate consistent hole (3-3), (3-5), two taper holes runner (3-1) direction in the same way extend, and have mirror to feature, the hole (1-3) of round platform forms mated condition closely in an end of tapered plug (6) and the valve body (1).
One butterfly spring (7) is located at the upper end of internal conical surface (3-3) and horizontal straight trough mouth (3-2), another butterfly spring (7) and the bottom of tapered plug (6-1) major part and top contact of the round platform (1-2) of valve body (1) bottom protrusion, when valve rod (4) when moving downward, the circular cone (4-2) of valve rod (4) head struts spheroid (3), simultaneously also carry-over moment on spheroid (3) lower cone body (6-1).
Helical spring (9) contacts with butterfly spring (7) by valve rod (4) one ends, and the other end places valve body (1) middle bench hole (1-3), and butterfly spring (7) up lifts and can be convenient to entering of second half spheroid (3).
The both sides of spheroid (3) upper end internal conical surface (3-3) are useful on the horizontal straight trough mouth (3-2) that holds pin (8), the assembling back cooperatively interacts with rotating sphere (3) with the straight trough mouth (3-2) on spheroid (3) top, and pin (8) does not hold the hole (4-1) on the conical surface (4-2) to fixedly connected with valve rod (4).
The top that valve body (1) makes progress is annular boss (1-4), the central position design that this boss is connected with spheroid (3) with valve rod (4), wherein there is a hole (5-2) that connects to match with transposition cover (5), the cylindrical body (1-5) that has outside survey to stretch out at circumferential edge, the screw thread (1-6) that inside is and plug screw (11-2) is meshed.
One end of straight pin (10) places the annular groove (5-1,5-3) of transposition cover (5), and the other end contacts with hole (11-1) in the plug screw (11).
In the middle of the transposition cover (5) by under the circumference of part on symmetrical design the orientation that is connected with straight pin (10) be 90 ° of annular groove mouths (5-1) and (5-3), on 70 ° of left and right sides scopes roughly, be a straightway (5-1) wherein, about 20 ° downward oblique line section (5-3), the screw thread (5-5) of the inside of upper end for being connected with screw thread (4-3) on the valve rod (4).
The action of the open and close of ball valve is as follows:
When valve closes: if ball valve is in the position of closing, conical surface (4-2) on this moment valve rod (4) and tapered plug (6-1) contact with conical bore (3-3,3-5) on the spheroid (3) and make spheroid (3) laterally strut suitable distance of displacement, and the ring packing flange (3-4) in its spheroid (3) is fitted tightly on the sealing surface of valve body annular flange flange (1-1).
When valve left: transposition cover (5) acted on the annular straight trough mouth by straight pin (10) when rotating counterclockwise handwheel (12), at first crossing a straightway (5-1), passing through about 20 ° again is downward oblique line section (5-3), after (at this moment sealing surface (3-4) on the spheroid (3) and the sealing surface (1-1) on the valve body (1) have been releasing orientation), when continuing to rotate to 90 ° of positions, ball valve is unlocked.
After ball valve was using sealing surface (3-4) and the wearing and tearing of the sealing surface (1-1) on the valve body (1) on a period of time spheroid (3), by the spanner (4-4) of valve rod (4) upper end, the distance that can regulate screw thread (4-3) and transposition cover (5-5) got final product.
Claims (7)
1. bracing type metal seal ball valve, it is characterized in that: valve body (1), connecting body (2), inner chamber at valve has the passage (15) that transmits liquid medium, one has in this path and selectively to rotate between the position of valve opening and closing so that the spheroid (3) that controlling liquid flows, this spheroid (3) is symmetrical two-piece type structure, with the passage place of the valve body (1) of the both sides of spheroid (3) sealing surface of the annular flange flange (1-1) that projection is arranged is slightly arranged respectively, to such an extent as to cooperate the sealing surface (3-4) of spheroid (3) thereon pressured.
2. bracing type metal seal ball valve according to claim 1, it is characterized in that: do not hold in the bottom of valve body (1) to be provided with round platform (1-2), the vertical center of spheroid (3) has and holds conical surface (4-2) and the tapered plug (6) that valve rod (4) do not hold and cooperate consistent hole (3-3), (3-5), two taper holes runner (3-1) direction in the same way extend, and the hole (1-3) of round platform forms mated condition closely in an end of tapered plug (6) and the valve body (1).
3. bracing type metal seal ball valve according to claim 1, it is characterized in that: a butterfly spring (7) is located at the upper end of internal conical surface (3-3) and horizontal straight trough mouth (3-2), the top contact of the round platform (1-2) that protrude the bottom of another butterfly spring (7) and tapered plug (6-1) major part and valve body (1) bottom.
4. bracing type metal seal ball valve according to claim 1, it is characterized in that: the both sides of spheroid (3) upper end internal conical surface (3-3) are useful on the horizontal straight trough mouth (3-2) that holds pin (8), the assembling back cooperatively interacts with rotating sphere (3) with the straight trough mouth (3-2) on spheroid (3) top, and pin (8) does not hold the hole (4-1) on the conical surface (4-2) to fixedly connected with valve rod (4).
5. bracing type metal seal ball valve according to claim 1 is characterized in that: helical spring (9) contacts with butterfly spring (7) by valve rod (4) one ends, and the other end places valve body (1) middle bench hole (1-3).
6. bracing type metal seal ball valve according to claim 1, it is characterized in that: the top that valve body (1) makes progress is annular boss (1-4), the central position design that this boss is connected with spheroid (3) with valve rod (4), wherein there is a hole (5-2) that connects to match with transposition cover (5), the cylindrical body (1-5) that has outside survey to stretch out at circumferential edge, the screw thread (1-6) that inside is and plug screw (11-2) is meshed.
7. bracing type metal seal ball valve according to claim 1 is characterized in that: an end of straight pin (10) places the annular groove of transposition cover (5) (5-1,5-3), and the other end contacts with hole (11-1) in the plug screw (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206567338U CN201982707U (en) | 2010-12-03 | 2010-12-03 | Unfurled metal-sealed ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206567338U CN201982707U (en) | 2010-12-03 | 2010-12-03 | Unfurled metal-sealed ball valve |
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| Publication Number | Publication Date |
|---|---|
| CN201982707U true CN201982707U (en) | 2011-09-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206567338U Expired - Fee Related CN201982707U (en) | 2010-12-03 | 2010-12-03 | Unfurled metal-sealed ball valve |
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| CN (1) | CN201982707U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102486235A (en) * | 2010-12-03 | 2012-06-06 | 浙江正华阀门厂 | Unfurled metal sealing ball valve |
| CN103133712A (en) * | 2013-03-11 | 2013-06-05 | 大连大洋阀门研究发展有限公司 | Double-wedge type double-ball-clack valve |
| CN106763874A (en) * | 2016-12-28 | 2017-05-31 | 江苏特思克阀门制造有限公司 | A kind of skew ball valve certainly |
| CN112576777A (en) * | 2020-12-18 | 2021-03-30 | 玖隆阀门有限公司 | Novel pneumatic ball valve |
| CN114251478A (en) * | 2021-12-30 | 2022-03-29 | 江苏厚水环保技术有限公司 | Quantitative ball water transfer valve |
| CN114438389A (en) * | 2022-01-27 | 2022-05-06 | 山野控制阀集团有限公司 | Diamond material and diamond composite material ball valve |
-
2010
- 2010-12-03 CN CN2010206567338U patent/CN201982707U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102486235A (en) * | 2010-12-03 | 2012-06-06 | 浙江正华阀门厂 | Unfurled metal sealing ball valve |
| CN103133712A (en) * | 2013-03-11 | 2013-06-05 | 大连大洋阀门研究发展有限公司 | Double-wedge type double-ball-clack valve |
| CN103133712B (en) * | 2013-03-11 | 2017-07-11 | 大连大洋阀门研究发展有限公司 | Double-wedge type double-ball-clack valve |
| CN106763874A (en) * | 2016-12-28 | 2017-05-31 | 江苏特思克阀门制造有限公司 | A kind of skew ball valve certainly |
| CN112576777A (en) * | 2020-12-18 | 2021-03-30 | 玖隆阀门有限公司 | Novel pneumatic ball valve |
| CN114251478A (en) * | 2021-12-30 | 2022-03-29 | 江苏厚水环保技术有限公司 | Quantitative ball water transfer valve |
| CN114251478B (en) * | 2021-12-30 | 2023-08-18 | 江苏厚水环保技术有限公司 | Quantitative ball water regulating valve |
| CN114438389A (en) * | 2022-01-27 | 2022-05-06 | 山野控制阀集团有限公司 | Diamond material and diamond composite material ball valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110921 Termination date: 20131203 |