WO2001090613A1 - Robinet avec une ouverture secondaire - Google Patents
Robinet avec une ouverture secondaire Download PDFInfo
- Publication number
- WO2001090613A1 WO2001090613A1 PCT/FR2001/001595 FR0101595W WO0190613A1 WO 2001090613 A1 WO2001090613 A1 WO 2001090613A1 FR 0101595 W FR0101595 W FR 0101595W WO 0190613 A1 WO0190613 A1 WO 0190613A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- plug
- opening
- valve device
- conduit
- valve
- Prior art date
Links
- 239000012530 fluid Substances 0.000 claims abstract description 24
- 238000011144 upstream manufacturing Methods 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- F16K5/08—Details
- F16K5/12—Arrangements for modifying the way in which the rate of flow varies during the actuation of the valve
Definitions
- the present invention relates to a valve device of the ball valve type.
- This type of valve is provided with a plug which closes the duct with a pipe when the valve is in the closed position and which comprises an opening intended to cooperate with the duct when the valve is in the open position.
- FIG. 11a shows, in section, a ball valve device in the closed position.
- the seal between a plug 500 and a valve body (not shown) is ensured by an annular seal 501 which cooperates with these two elements.
- a fluid flow opening 502 of the plug is located substantially perpendicular to the direction of circulation of the fluid indicated by the arrow ⁇ _, that is to say outside the passage defined by the seal 501.
- FIG. 11b illustrates this same device in an open position. In this position, the opening 502 is aligned with the direction of circulation of fluid in the conduit thus authorizing the passage of the fluid from upstream to downstream in the conduit.
- the hydraulic characteristic that is to say the pressure drop coefficient as a function of the valve opening angle, for a ball valve as described above, is shown in Figure 12. D after this figure, the shape of the pressure drop curve 90 is characterized by a sudden drop in the pressure drop coefficient during of the first moments of opening.
- the present invention aims to remedy the aforementioned drawbacks and to produce a valve type valve device which allows control of its hydraulic characteristic in order to obtain several flow phases.
- valve device comprising a valve body delimiting a fluid circulation conduit comprising an upstream portion and a downstream portion between which a plug having a main flow opening is disposed, the plug being movable between a first position in which the main flow opening cooperates with the circulation duct and a second position in which the plug closes said duct, characterized in that the valve device includes a single annular seal ensuring the seal between the duct and the external wall of the plug and in that said plug further comprises at least one secondary flow means offset with respect to said main flow opening so that when the plug is in an intermediate position between the open and closed positions, the fluid circulates in the duct by entering directly through the main flow opening on the side of the upstream portion of the duct and exiting through the secondary flow means on the side of the downstream portion of the conduit.
- the present invention provides a valve device which makes it possible to adapt in a simple and economical manner the hydraulic characteristic of a valve of the bushel type to obtain several flow phases.
- the annular seal can be arranged either between the external wall of the plug and the downstream portion of the duct, or between the external wall of the plug and the upstream portion of the duct.
- the secondary flow means have a shape and a dimension which are calibrated according to the level of pressure drop desired.
- the level of pressure drop of each flow phase can be determined according to the shape and size of the secondary flow means.
- the value of the spacing defined, according to the displacement plane of the plug, between the secondary flow means and the main flow opening is a function of the duration of the flow phase produced by the means d secondary flow.
- the length of the flow phase produced by the secondary flow means can be controlled by the value of the spacing between them and the main opening.
- the secondary flow means comprise an opening disposed between the external surface of the plug and the cavity defined by the main flow opening.
- the secondary flow means comprise first and second openings disposed between the external surface of the plug and the cavity defined by the main opening, the first and second openings being substantially aligned along an axis defined by the diameter of the bushel.
- the secondary flow means comprise at least one opening offset by a length parallel to the main opening of the plug.
- the secondary flow means comprise several openings arranged between the external surface of the plug and the cavity defined by the main opening.
- the secondary flow means are arranged in a plane inclined relative to the plane defined by the main opening.
- the valve device comprises sealing means arranged between the external surface of the plug and the conduit.
- the plug is of spherical, cylindrical or conical shape.
- the valve device comprises means for driving the valve in rotation to move the valve between an open position and a closed position.
- the means for driving the plug in rotation drive said plug in a permanent gyratory direction.
- the plug moves between an open position and a closed position by linear translation.
- the valve device as defined above can be applied to a liquid circulation pipe.
- FIG. 1 is a view schematic in cross section of a valve device according to a first embodiment according to the invention
- FIG. 2 is a schematic sectional view along the plane II-II of FIG. 1 showing a plug of a valve device according to a first embodiment of the invention
- FIGS. 3a, 3b and 3c are schematic sectional views along the plane ll-ll of FIG. 1 showing a plug in different positions according to a first embodiment of the invention
- FIG. 4 is a diagram showing hydraulic characteristics of the valve device according to the invention in correspondence with FIGS. 3a, 3b and 3c,
- FIG. 5a, 5b, 5c and 5d are schematic sectional views showing a plug in different positions according to a second embodiment of the invention
- - Figure 6 is a diagram showing hydraulic characteristics of the valve device according to a second embodiment of the invention
- FIG. 7 is a diagrammatic section view showing a plug according to a third embodiment of the invention
- FIG. 8 is a diagrammatic view of a spherical valve according to a fourth embodiment of the invention
- FIG. 9 is a diagram showing hydraulic characteristics of the valve device according to a fourth embodiment of the invention
- FIG. 10 is a schematic view of a plug for a linear type valve device according to a fifth embodiment of the invention.
- FIG. 11a and 11b are schematic views in longitudinal section of a plug in the open and closed position according to the prior art
- - Figure 12 is a diagram showing a hydraulic characteristic of a valve device bushel type according to the prior art.
- valve device comprises only a single annular seal to ensure the seal between the plug and the valve conduit.
- the characteristics of the present invention will be described below in relation to ball valves in which the seal is disposed between the downstream portion of the conduit and the external wall of the ball.
- FIG. 1 represents, according to a first embodiment of the invention, a valve 1 which comprises a valve body 2 delimiting a conduit 30 for circulation of fluid.
- the duct 30 comprises an upstream portion 31 and a downstream portion 32 separated by a plug 20.
- the plug 20 comprises a main flow opening 21 which is intended to cooperate with the duct in the open position, thus allowing the fluid to flow from the upstream portion 31 to the downstream portion 32 as indicated by the arrow ⁇ .
- the opening 21 is substantially perpendicular to the axis of circulation of the fluid in the conduit preventing the passage of the fluid from the upstream portion 31 towards the downstream portion 32 of the conduit.
- an annular seal 10 which is integral with the valve body 2 is kept in contact against the external surface of the plug when it is in the closed position. The annular seal 10 therefore defines a sealing "border" between the upstream and downstream portion of the conduit.
- the seal 10 as shown in Figure 1, is disposed on the side of the downstream portion 32 of the conduit. It can also be placed on the side of the upstream portion 31 of the conduit to form the sealing border with the plug.
- the plug 20 is integral with a rotary shaft 25 intended to alternately move the plug from a closed position (closed position), in which the opening 21 is outside the interior space delimited by the seal, a position for aligning the opening 21 with the conduit 30 (open position) where one of the ends of the opening is in the interior space of the seal.
- the rotary shaft 25 is driven by an actuator (not shown) which can be manually, electrically, pneumatically or hydraulically operated.
- the plug 20 also comprises a secondary flow opening 22 which is formed between the external surface of the latter and the channel formed by the main opening 21.
- the Figure 2 shows a sectional view of the plug 20 according to the invention.
- the secondary opening 22 forms an angle ⁇ with the main opening 21.
- the secondary opening 22 is here arranged in the same horizontal plane as the opening 21 and is, in the direction of opening of the plug, closer to the sealing "border" delimited by the annular seal 10 that the main opening 21.
- This secondary opening can have very varied shapes and dimensions depending on the desired hydraulic characteristics. However, it is preferable that the dimension of this secondary opening is much smaller than that of the main opening to avoid excessive instantaneous pressure drops.
- the plug 20 comprising a main opening 21 and a secondary opening 22 arranged in an offset manner as illustrated in FIGS. 1 and 2, three phases A, B and C of fluid flow are obtained when the plug is in motion.
- These phases and the operation of the device according to the invention will be described in relation to Figures 3a to 3c and with the curve 40 of hydraulic characteristic shown in Figure 4.
- the curve 40 shown in Figure 4 corresponds to the pressure drop observed in the valve device according to the first embodiment of the invention as a function of the opening angle ⁇ of the plug.
- the values taken by the angle ⁇ are between 80-90 ° (closed position of the plug) and (0 °) (open position of the plug).
- a first phase A corresponding to the first moments of opening of the plug, the secondary opening 22 begins to pass beyond the annular seal 10 as illustrated in FIG. 3a.
- the fluid hitherto blocked in the upstream portion 31 of the conduit 30 begins to circulate between the upstream portion 31 and downstream 32 passing through the main opening 21 on the upstream side and leaving through the secondary opening 22 located on the other side of the seal 10, that is to say on the downstream side 32 of the duct.
- this first phase A corresponds to the start of a pressure drop in the duct which is only due to the secondary opening 22 since at this stage only this opening passes beyond the joint.
- the next phase is a so-called transient opening phase B, where, as shown in FIG. 3b, the opening 22 is completely passed over the other side of the seal 10.
- This flow phase B corresponds to a "bearing" in which the fluid flow is substantially constant.
- the dimension or more precisely in this embodiment the diameter of the opening 22 determines the level of the bearing in terms of pressure drop.
- the length of this bearing is a function of the spacing between the secondary opening 22 and the main opening 21 which in the case of a ball valve such as the valve 20 is expressed by the angle ⁇ formed between the two openings in a plane perpendicular to the axis of rotation of the plug.
- valve device only comprises a single seal between the plug and the fluid circulation duct, a single secondary opening, offset on the plug relative to the main opening, already makes it possible to obtaining a control of the flow rate of the fluid and consequently a flow phase in which the pressure drop is reduced with respect to the pressure drop produced by the main opening.
- the fluid which is present on the upstream side of the duct is also present all around the external wall of the plug which is not included in the space delimited by the seal 10 on the downstream side. The fluid therefore enters the upstream side through the main opening 21 and exits the downstream side only through the secondary opening 22, thereby regulating the flow rate of the fluid in the valve in this opening phase.
- the third phase corresponds to phase C where the main opening 21, as shown in FIG. 3c, which defines a more important than that of the secondary opening 22, passes the annular seal 10. The influence of the flow through the opening 22 then becomes negligible vis-à-vis the main flow through the opening 21.
- the hydraulic characteristic mainly depends on the shape of the main opening 21.
- the hydraulic characteristic of the device according to the invention is controlled, so that several flow phases are obtained between the maximum load level when the valve is in the closed position and the minimum charge level when the valve is open.
- the bearing obtained during the flow phase B is also found during the closing operation of the plug and therefore of the valve.
- the flow phases A, B and C obtained when the valve opens are found inversely when the valve is closed. Consequently, the valve device according to the invention is hydraulically controlled both when it is opened and when it is closed.
- the secondary opening must be arranged the other side of the main opening symmetrically with respect to the axis of the latter so as to obtain the same flow phases as those which have just been described with a valve where the seal is disposed on the downstream side of the conduit .
- the valve device is equipped with a rotary plug which always rotates in the same direction thanks to an electric actuator for example.
- a plug 120 comprises a main opening 121 and a first and second secondary openings 122, 123.
- the first and second openings secondary 122, 123 are substantially aligned on the same axis in the plane of the main opening 121.
- These two secondary openings can be obtained for example from a single bore, which passes right through the plug, passing through the main opening 121.
- the valve device comprises a plug 220 having a main opening 221 and a secondary opening 222 offset by a length L parallel to the main opening 221.
- the characteristic hydraulic obtained during rotation of the plug 220 with respect to the seal 210 is substantially the same as that illustrated in FIG. 4.
- the device according to the invention is not limited to a plug comprising one or two secondary openings situated in a plane equatorial bushel. Indeed, the number, the location relative to the main opening and the shape of the secondary openings are respectively a function of the number of bearings, of the length of each bearing and of the desired pressure drop level. The two embodiments already described can therefore be further modified according to these parameters to obtain particular hydraulic characteristics.
- FIG. 8 shows a ball valve 320 which comprises a main opening 321, a first and second secondary openings 322 and 323 of cylindrical shape, and a third secondary opening 324 of parallelepiped shape.
- FIG. 9 illustrates the various hydraulic characteristics obtained in terms of coefficient K of pressure drop as a function of the angle ⁇ of opening of the plug. It can be seen that the curve 60 in FIG. 9 presents, between a closed position and an open position, three bearings 61 obtained respectively thanks to the secondary openings 322, 323 and 324. The level of these bearings depends on the diameter or the cross-sectional area. presented by each secondary opening.
- the length of the bearings 61 of the curve 60 depends on the spacing, here measured in a plane perpendicular to the axis of rotation, which exists between each opening (secondary or main) and which when the opening or closing of the bushel in the duct, determines the length of a flow phase generated by an opening.
- the various bearings obtained can also be extended by maintaining the plug in an intermediate position between a closed position and an open position so that the fluid circulates only by
- the slope -— can be
- the curve 60 has a strong slope between the two bearings closest to the open position which is due to the passage beyond the joint of the main opening 321 of triangular shape.
- the triangular shape of the main opening 312 makes it possible to reduce or increase the slope of the curve 60 according to the direction of rotation of the plug.
- a "hollow" 62 appears on the curve when the opening angle is close to the closed position of the plug.
- Such a recess in the behavior of the coefficient of 'pressure drop can be obtained, for example, by passing through the opening space defined by the seal opening 323 that is located on a non-equatorial plane to the surface bushel 320.
- the opening 323 which is arranged offset relative to the equatorial plane of the plug in which the main opening 321 is located, appears in the opening space defined by the joint causing a reduction in the pressure drop coefficient K.
- the opening 323 then leaves the opening space while the main opening 321 has not yet appeared in the opening space consequently causing an increase of the coefficient K.
- Such secondary openings can thus be arranged in a non-equatorial plane of the plug, which makes it possible to obtain a change in direction of the hydraulic characteristic such as the "hollow" 62 of the curve 60.
- valve device according to the invention which have just been described are obviously not limiting.
- the number of secondary flow openings will be varied as well as the shape of the flow openings which may be cylindrical, parallelepiped, ovoid, any, etc. or the location of the openings on the bushel.
- the spherical shape of the plug is advantageous, the invention can, without no additional technical difficulties, apply to valve devices comprising a cylindrical, conical or other plug as required.
- Figure 10 shows a plug 420 for closing or opening a conduit in a linear type valve device.
- the plug 420 moves alternately, by a linear translational movement, from a closed position where its solid portion closes the valve duct to an open position in which a main flow opening 421 cooperates with the duct.
- a secondary opening 422, offset by a length L parallel to the main opening 421, makes it possible to control the hydraulic characteristics of the valve device in the same way as with the ball valve devices described above. All the variants envisaged with regard to the characteristics of the secondary openings (location, dimension, shape, number, etc.) for the rotary plug devices are also valid for the linear type valve devices.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
- Lift Valve (AREA)
- Sliding Valves (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01938316A EP1283964B1 (fr) | 2000-05-24 | 2001-05-23 | Robinet avec une ouverture secondaire |
US10/275,986 US6779779B2 (en) | 2000-05-24 | 2001-05-23 | Faucet with secondary opening |
DE60121575T DE60121575T2 (de) | 2000-05-24 | 2001-05-23 | Hahn mit sekundärer öffnung |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR00/06612 | 2000-05-24 | ||
FR0006612A FR2809467B1 (fr) | 2000-05-24 | 2000-05-24 | Dispositif de vanne a caracteristique hydraulique controlee |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001090613A1 true WO2001090613A1 (fr) | 2001-11-29 |
Family
ID=8850552
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2001/001595 WO2001090613A1 (fr) | 2000-05-24 | 2001-05-23 | Robinet avec une ouverture secondaire |
Country Status (5)
Country | Link |
---|---|
US (1) | US6779779B2 (fr) |
EP (1) | EP1283964B1 (fr) |
DE (1) | DE60121575T2 (fr) |
FR (1) | FR2809467B1 (fr) |
WO (1) | WO2001090613A1 (fr) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7104521B2 (en) * | 2004-05-19 | 2006-09-12 | Daniel Industries, Inc. | Dual chamber orifice fitting valve |
WO2007098630A1 (fr) * | 2006-03-01 | 2007-09-07 | Belimo Holding Ag | Soupape de régulation du debit et procede d'elimination des oscillations |
US7695433B2 (en) * | 2007-01-24 | 2010-04-13 | Zeppelin Designs, Inc. | Laryngoscope with disposable blade cover |
US20090032762A1 (en) * | 2007-08-03 | 2009-02-05 | Mogas Industries, Inc. | Flow Control Ball Valve |
US8316880B2 (en) * | 2009-05-08 | 2012-11-27 | Hamilton Sundstrand Corporation | Oil filter bypass valve assembly for a generator |
CN102740810B (zh) * | 2010-01-29 | 2015-06-17 | 医研比赫国际股份公司 | 排液阀及包括所述排液阀的收集袋组件 |
DE102010042021B4 (de) | 2010-10-06 | 2013-02-21 | Maximilian Blomeier | Kugelhahnkugel |
US8534360B2 (en) * | 2012-02-10 | 2013-09-17 | Halliburton Energy Services, Inc. | Debris anti-compaction system for ball valves |
BR112018005859B1 (pt) | 2015-09-28 | 2021-08-24 | Precision Planting Llc | Dispositivo de fluxo para controlar o fluxo durante uma operação agrícola, unidade de controle e monitoramento, e implemento |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2632467A (en) * | 1947-08-30 | 1953-03-24 | Harper Wyman Co | Gas valve |
DE1450552A1 (de) * | 1962-03-07 | 1969-01-16 | Gen Dynamics Corp | Ventil |
EP0843116A2 (fr) * | 1996-11-19 | 1998-05-20 | Stolco Stoltenberg-Lerche GmbH & Co. KG | Robinet à tournant sphérique avec un canal auxiliaire. |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1825512A (en) * | 1929-03-06 | 1931-09-29 | Herbert W Durham | Valve |
US2621012A (en) * | 1947-12-22 | 1952-12-09 | Clifford P Graham | Plug-type valve |
US3386461A (en) * | 1965-07-02 | 1968-06-04 | Texaco Canadian Ltd | Multi-port orifice valve |
US3656711A (en) * | 1970-08-17 | 1972-04-18 | Encon Mfg Co | Thermoset plastic ball valve |
GB1388270A (en) * | 1971-11-11 | 1975-03-26 | Mclelland J D | Valves |
US4655078A (en) * | 1985-01-30 | 1987-04-07 | Johnson Augustus W | Sprinkler drain and test valve |
US5305986A (en) * | 1993-03-31 | 1994-04-26 | Hunt Kevin F | Fluid control valve |
-
2000
- 2000-05-24 FR FR0006612A patent/FR2809467B1/fr not_active Expired - Fee Related
-
2001
- 2001-05-23 WO PCT/FR2001/001595 patent/WO2001090613A1/fr active IP Right Grant
- 2001-05-23 US US10/275,986 patent/US6779779B2/en not_active Expired - Lifetime
- 2001-05-23 DE DE60121575T patent/DE60121575T2/de not_active Expired - Lifetime
- 2001-05-23 EP EP01938316A patent/EP1283964B1/fr not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2632467A (en) * | 1947-08-30 | 1953-03-24 | Harper Wyman Co | Gas valve |
DE1450552A1 (de) * | 1962-03-07 | 1969-01-16 | Gen Dynamics Corp | Ventil |
EP0843116A2 (fr) * | 1996-11-19 | 1998-05-20 | Stolco Stoltenberg-Lerche GmbH & Co. KG | Robinet à tournant sphérique avec un canal auxiliaire. |
Also Published As
Publication number | Publication date |
---|---|
FR2809467A1 (fr) | 2001-11-30 |
DE60121575D1 (de) | 2006-08-31 |
US20040021115A1 (en) | 2004-02-05 |
EP1283964A1 (fr) | 2003-02-19 |
DE60121575T2 (de) | 2007-06-28 |
FR2809467B1 (fr) | 2003-01-31 |
EP1283964B1 (fr) | 2006-07-19 |
US6779779B2 (en) | 2004-08-24 |
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