CN1493804A - Axial rotating separate type venturi tube valve with improved flow quantity - Google Patents

Abstract

The present invention provides an axially-rotated valve which permits increased flow rates and lower pressure drop (characterized by a lower loss coefficient) by using an axial eccentric split venturi with two portions where at least one portion is rotatable with respect to the other portion. The axially-rotated valve typically may be designed to avoid flow separation and/or cavitation at full flow under a variety of conditions. Similarly, the valve is designed, in some embodiments, to produce streamlined flow within the valve. A typical cross section of the eccentric split venturi may be non-axisymmetric such as a semicircular cross section which may assist in both throttling capabilities and in maximum flow capacity using the design of the present invention. Such a design can include applications for freeze resistant axially-rotated valves and may be fully-opened and fully-closed in one-half of a complete rotation.

Description

A kind of axial rotating separate type venturi tube valve that improves flow

Technical field

The present invention relates to a kind of improved Flow valve system and valve, particularly axial rotary valve, and comprise apparatus and method.Especially, the present invention is that preferred occasion has applicability at frost valve.

Background technique

Since many centuries, valve is used to various purposes.Along with the development of technology, had been found that the more complicated application of valve.For example, various improvement on the actuating mode of valve, have been carried out.Some comprises that motor driven activates, Electromagnetically actuated and nearest computer control activates or the like in these modes.Yet the main fluidal texture of valve is still being followed four kinds of conventional constructions and is relatively being remained unchanged.

The type of a kind of valve that is adopted is a gate valve.Its simple in structure, low price, and can be used for various purposes.Gate valve generally includes a disk that is called gate, and this disk laterally is installed on a pipeline or the pipe and engages with a valve seat and is used for cutout or throttling.Those skilled in the art know that gate valve is relatively poor except control flow rate effect on the position standard-sized sheet or the complete shut-down position at it usually.Interface between gate and its valve seat weathers usually and often needs repairing.

Another kind of typical valve is called globe valve.Those skilled in the art know that it is in throttling effectively except the position of standard-sized sheet or complete shut-down.In people's such as Nakajima U.S. Patent No. 4,066,090, disclosed an example.As can be seen, flow path is a bit tortuous, causes higher friction loss, non-laminar flow usually, and may cause flow separation and/or air pocket prematurely.Therefore, the flow when flow can be less than the gate valve standard-sized sheet, the flow path of fluid tend to cause wearing and tearing, and globe valve is because its intrinsic structure can cause loose.

The third type is a ball valve.The advantage that this ball valve can provide many flows that are better than globe valve to increase.The valve actuator that should link to each other with ball is perpendicular to the flow direction.When valve is opened, ball rotation and with center hole in the ball and pipe alignment by valve.This ball valve has a bit loose gradually, uses two seat abutment surface on any side that is positioned at ball usually, and makes and get up to want expensive.

The 4th kind of valve is referred to as butterfly valve.This butterfly valve has an inner valve seat, the common transversal piping erection of this valve seat.A common outer valve stem is rotated the disk of a transversal pipeline, and the disk engage valve seat is flowed to block fluid.Butterfly valve has higher flows usually and needs less maintenance.Yet it keeps this typical structure that has with the horizontal installation valve of horizontal valve rod.Although valve rod can carry out long-range actuating by motor or other device known to those of skill in the art, but it both can not be suitable for obtaining resulting structure may needing that valve, remote actuator and ducted valve seat are surrounded the airtight installation of carrying out fully, also was unsuitable for being installed in the sidewall structure that a kind of passage that leads to actuator is restricted owing to this crosswise fixed.

Root problem in the various design proposals of valve is the equilibrium problem between low friction loss, high flow capacity and the restriction characteristic.That other consideration comprises is freeze proof, simplification, manufacture cost and other possible concrete purposes of structure.Although had above-mentioned various types of valve, still need to provide a kind of the improvement to flow, hang down the valve of friction.This is need be along particularly useful in the application of the long-range actuating of central axis.Usually these structures relate to freeze proof structure.

With regard to antifreeze or freeze proof, the effort of being done all concentrates on the stopper that makes globe valve and is positioned at away from the external environment that causes the solidifying position far away.Fig. 7 of U. S. Patent № 4,532,954 has expressed a typical example.By stopper being placed position far away, can make fluid, water normally, be flowing in pipe or the pipeline with outside ice-cold environment and separate certain distance.Because from the intrinsic difficulty of pipe interior actuating gate valve, those skilled in the art concentrates on focus on the valve seat of globe valve type usually.In this structure, nose cone part engages with valve seat any flowing is sealed in away from the disadvantageous external environment condition position far away.As shown in FIG., nose cone engages flowing with restriction water by aperture with valve seat.This remote arrangement can be kept apart water and ice-cold external environment condition valuably.Yet it can produce other problem.Wear surface is easy to be subjected to the corrosion of water and the impurity in the surface meeting of the going up connate water.And in order to obtain suitable seal, the mechanical advantage of the bolt of valve rod can pushed the tip of nose cone part through after repeatedly using.In case nose cone is squeezed or is out of shape, it just requires nose cone to have strict more sealing, and this finally can cause leaking (being exactly famous " drip drip ").And the intrinsic structure of the nose cone that matches with aperture part has caused a great pressure drop, as those of ordinary skill in the art can recognize immediately.This great pressure drop meeting reduces flow.After reducing, wants flow proportional increase pipeline, valve or other device size, so that obtain required flow.In addition, the use of nose cone parts means the valve seat that will change the globe valve type, and this needs many turnings to come suitably fluid-encapsulated.Equally, the valve controlling rod moves at longitudinal direction usually--and it is not fixed with respect to pipeline or pipe that it is installed in wherein.Therefore, not only rotatablely move but also the motion of the longitudinal direction when it engages with those parts of valve seat all can cause the increase of wearing and tearing and keeping in repair.Although the increase of the size of conventional valve can obtain essential flow usually, since size, cost and with the compatibility of other element of pipe-line system, this is not a feasible scheme.

Therefore, the existing attempt idea that remotely seals current or other fluid can cause higher pressure drop, lower flow and technical maintenance.Flow particular importance when the design sprinkler system.For given typical sizes, household and commercial sprinkler system all need to be higher than the flow of traditional gate valve or globe valve output quantity.Therefore, a kind of device can not use the typical valve configuration of the antifreeze fire hydrant of a kind of tradition-opposite, and its needs the straight coupling with perfect valve control on a kind of pipeline that be connected to other.Have the people recognized of sprinkler system knowledge as those, this perfect valve configurations needs expensive control, maintenance, emptying, place and national mark and other problem dull season therebetween using.

The picture above-mentioned and other caused further complicated as the same axial rotary valve of the valve in people's such as Samuelsen the U.S. Pat 3,848,806.The valve rod that this actuating has been expressed on this axial rotary valve is positioned at flow path before this always.Till the present invention, those of skill in the art think always, on so axial rotary valve, partly are coupled in the aperture in order to make nose cone in place far away, valve rod need be placed in the flow path.Yet, caused the resistance and the friction of extra loss in efficiency, increase and less flow by extra turbulent flow that valve rod caused in the flow path and the volume amounted to.

Therefore, as system become more improve, also need a kind of valve, this valve can carry out long-range actuating by the internal structure away from adverse environment of valve, and low price, be easy to install, have the diameter identical or approximate, and still keep higher flows and lower pressure drop with existing pipe-line system.If can obtain a system with fire hydrant of high flow, and this fire hydrant can repack group shot and water bolt into, and this will have a kind of market advantage.This will be highly beneficial to resident family aspect reducing cost, and this will help builder or setter and satisfy construction that outside tap is installed simply and require and also can reequip sprinkler system with least cost.

Many mode of executions pass through as the U.S. Patent application № 08/637 at Robert K.Burgess, 203 promptly now are disclosed in U.S. Patent number № 5, institute's acquisition valve has demonstrated a kind of great improvement in 718,257, and this patent has required a priority date according to above-mentioned application.In that patent, recognize, fixedly lengthwise position with axial rotation can obtain higher flows and lower pressure drop and friction loss and the least possible maintenance and since its tightness can install with lower cost.In that patent, this invention provides a kind of valve of special construction, this valve has a rotatable seal element that is fixed on appropriate location in the pipeline along the longitudinal direction, and the sealing element engages with the valve base element that is fixed on the interior appropriate location of pipeline equally along the longitudinal direction.This position can place apart, and for example, adverse environment has one section sufficient length or distance, so that can will flow and the hostile environments seal isolation comes.This valve was greatly improving flow at that time for the known situation in this field.Test result shows that for a given flow, globe valve may almost reach the pressure loss of the twice of Burgess invention.Equally, Burgess invention appears its friction loss ' structure shown in 954 is approximately little five times than above-cited.This invention also needs 1/4th to change from the standard-sized sheet to the complete shut-down.Because the increase of its flow can be felt, a valve with suitable flow will be provided, the needs of more demand sprinkler systems can be installed and also satisfy to this valve with the size that is equal to conventional pipelines.Yet with other thing, the sort of valve has kept the traditional valve rod that places flow path.

The present invention proposes one and have very big improved example aspect pressure drop, Fig. 1 a has expressed the function of flow of the pressure drop of the axial rotation frost valve that obtains on the various markets.Fig. 1 b has expressed a chart that measured loss coefficient is the function of reynolds' number, and the axial rotation frost valve that obtains on the present invention and some market and the valve of other type are compared, further to demonstrate great improvement of the present invention.Article two, be Competitor's valve shown in the curve of top, as for high flow design on the supply system of sprinkling water.Although ' 203 valves seem to have great improvement with respect to prior art at that time, shown a bigger flow for given pressure drop the present invention, perhaps conversely, under a given flow condition, have a lower pressure drop.When with the pressure drop under the certain flow condition being benchmark when comparing, the present invention may have four times improvement with respect to many contrast persons.

Another reference, promptly people's such as Vadersen U. S. Patent № 286,508 discloses a kind of for a kind of early stage idea of axial rotation frost valve is provided.Owing to many reasons, this mode of execution is not accepted by market obviously.Perhaps there are two reasons.First, as those of ordinary skill in the art have realized that, valve plate (G) with aperture (H) with hole (T) in valve (K) when aliging, will cause non-laminar flow to flow, increase friction loss, flow separation and possible air pocket depend on the vapor pressure of fluid under that temperature.The second, valve rod is placed in the flow path.This is and the of the present invention direct contrast of using a kind of axial rotation Venturi tube with the problem in the reference of being avoided Vadersen in many examples.Therefore, seem all to be considered to suitable from the small improvement in the period of of the present invention 114 of the reference of Vadersen along this distinct line.

The present invention has exceeded the invention of this early stage valve, and even has exceeded U.S. Patent application № 08/637,203.For a given supply pressure, the present invention brings up to flow several times of ' 203 inventions.The existing axial rotary valve of its loss coefficient ratio is low.Tested out its loss coefficient and its loss coefficient is approximately 50% of conventional axial rotary valve.Its structure is simpler, particularly can avoid valve rod to place flow path, and restriction characteristic preferably can be provided.And can keep higher flows for giving constant pressure drop.Such valve can be suitable for various uses widely, comprises that pumping, oil field boring purposes, the water valve of cryogenics, oil field gas and liquid disposes, sprinkles water and irrigate and other.

Therefore, exist always a kind of feel for a long time but unsatisfied needs to the invention that can satisfy and address the above problem.The present invention has set forth next step that seek low friction, high flow and throttling performance preferably, particularly need carry out in the use of long-range actuating axial rotary valve.Can both obtain although realize element, other people's invention direction and the present invention are from must be far away.The effort that they have been done mainly concentrates on the nose cone or other seal element that vertically move forward or backward and leans on the valve seat that contains a hole usually.This has just caused the problems referred to above, for example less flow.Those skilled in the art knows and exists a problem and attempt to adopt patent US4, and the technology that discloses in 532,954 solves this problem.Even adopt the improvement technology of the invention of U. S. application № ' 203, still exist for given pressure drop this problem less than optimal flux.Perhaps, those skilled in the art can accept extra installation, complicated valve configurations and other is for the extra-pay as the necessary demand of sprinkler system simply.The guidance that total thinking provides all departs from the direction that the present invention proposes.May be unforeseeable be that valve can either have bigger high flow capacity and the fluid of the pipeline that also can remotely control or block to have the same or similar size of finding in conventional construction or pipe flows and a kind of solution of economy still can be provided.Till the present invention, seem that those skilled in the art does not consider the technological scheme that the present invention proposes.

Summary of the invention

A main target of the present invention is to make axial rotary valve improve the scheme of flow in order to provide a kind of.It also can be applied to those and adopt in antifreezing valve device and the sprinkler system.By understanding and all the different designs that utilize valve and the advantage of structure, this valve has just been realized its purpose.

The invention provides a kind of axial rotary valve, this valve obtains the flow of increase and lower pressure drop by using a kind of axial eccentric Venturi tube, and this Wen's pipe has two-part, and wherein at least a portion is rotated with respect to another part.(as known to related domain has the personnel of ordinary skill, a kind of traditional Venturi tube is a kind ofly to have a taper and shrink the pipeline that and then expands, and fluid flows through this pipeline.Venturi tube normally is used to measure the high efficiency device of the flow of fluid, referring to Beckwith, and Thomas, Marangoni, Roy, Lienhard V, John, Mechanical Measurements be (Addeson-WesleyPubl.Co.5th ed.1993) p.617).Axially rotary valve can design to such an extent that can avoid flow separation and/or air pocket when circulating fully under various conditions usually.In many examples, this valve can design to such an extent that can delay the transformation of laminar flow at least at the some parts of separate type venturi tube.A kind of traditional transverse section of this eccentric separate type venturi tube can be the non-axisymmetric transverse section as the semicircle transverse section, uses this section of structure of the present invention both can help to improve throttling capacity and also can make the flow maximization.A scheme like this can be used for antifreeze axial rotary valve and can be in half way around complete opening or close fully.Usually the inside ancon that links to each other with the rotatable portion of eccentric Venturi tube can help to flow with lower frictional loss and pressure drop guiding.One valve actuator can axial manner activates, and the outside that can place the axial flow road individually is with further reduction frictional loss.In other embodiments, an outlet end of axially aligning also can increase flow.Can between these two-part, use a Sealing, sealing part can have in same plane one circumferentially and radial seal.One hermetic separation device can increase the working life of the Sealing between standing part and the rotating part.

Can predict the present invention can be used on the civilian and commercial device that can reduce the freezing possibility of valve economically.Such application also can relate to sprinkler system, both can underground also can be on the ground.Only progressively be better than the prior art system in performance and configuration aspects except providing a kind of, the present invention has also utilized a kind of technology, and it has great improvement with respect to prior art on performance.This valve of the present invention has satisfied one of standard by means of cheap manufacture cost, and higher flows, good maintenance, lower pressure drop and throttling performance also are provided.This valve also can be used for many other occasions, some special occasion, for example cryogenics, oil field and other.

The present invention has a great advantage in the size of valve and pipe aspect determining.The desirability of the quick opening and closing till it has kept from the standard-sized sheet to the complete shut-down.In many examples, under circulation condition fully, the present invention manage to keep a kind of do not have air pocket, Laminar Flow, and keep certain Laminar Flow in some embodiments.This may cause less turbulent flow and reduce friction loss.The present invention solution have be installed in the flow path and axial rotary valve that streamwise activates along the longitudinal axis of the central shaft that is parallel to valve difficult aspect useful especially.

Another target of the present invention is for a kind of scheme that is used for a kind of axial rotary valve is provided, and this valve utilizes a kind of axial eccentric separate type venturi tube to make flow increase pressure drop to reduce, and this Venturi tube has two-part, and at least a portion can be rotated with respect to another part.An object of this purpose provide an axial rotor with rotation in two-part at least one part and in flow path axial rotor do not have substantial contact.Another purpose is for the separate type venturi tube of an off-centre is provided, and it is similar to semi-circular transverse cross-section on the direction perpendicular to flow path shape adopts this structure of the present invention can help to improve its throttling performance and also can make the flow maximization.Such scheme relates to the purpose that an antifreeze axial rotary valve is provided.It has part, the especially downstream part that a length is at least 6 times of this part internal diameters (reasonable is 7 or 8 times), so that help to provide in separate type venturi tube transition stably to flow.Another purpose can provide a bobbin assembly, and this assembly comprises part valve at least, thereby it can retreat at an easy rate and inject in the pipeline of valve.Such structure can be in half way around standard-sized sheet and complete shut-down.Although this drive may not resemble invention ' rapid the embodiment shown in 203, can believe that fast like this rotation will be satisfied the target and the objective requirement in market.And the present invention can comprise a drain hole, and this drain hole is used for opening and makes drains when valve is in to small part closed position and usually complete closed position.By using a separate type venturi tube, the fluid of separate type venturi tube suction side can reduce gradually along with the pressure that its fluid enters first portion's fluid of separate type venturi tube and simultaneously the speed of fluid increase.Separate section between first and second parts of separate type venturi tube or interface place, fluid increases simultaneously gradually and underspeeds along with its second portion that flows through separate type venturi tube arrives certain outlet pressure.In many cases, external environment condition may be such, and promptly pipeline self may provide one to lead to harmful external environment condition, freezing point temperature for example, pathway.Under these circumstances, just have to be beneficial to and make pipeline split and cause thermal boundary between the two-part at pipeline at least, thereby energy just can not be lost in harmful external environment condition and do not go in iced areas.Can use a Sealing at the interface place at first portion and second portion rear portion.Such Sealing can seal the circumferential of interface, and can carry out radial seal in many cases, as following will further the discussion.Radial seal can be rectilinear, or adopts the curvilinerar figure of certain form.In many examples, pipeline can not be a rigidity, can a part not be at least.For example pipeline can comprise flexible pipe.A kind of suitable location can be such, i.e. sealing between first and second parts can not produce interference.The present invention also can comprise a coupling sleeve that surrounds first portion's (normally fixing) and second portion (normally rotatable).This coupling sleeve can be so that fixing the biasing each other with rotating part also can not established external pipe.This coupling sleeve can turn round together in a hermetic separation device, thereby standing part is separated with Sealing between rotating part.This technical characteristics can reduce the wearing and tearing to Sealing.And the present invention can comprise an outlet end of axially aligning that substitutes traditional dihedral outlet end.Because this unique design of the present invention, this axially aligns outlet can further promote the increase of flow and the reduction of flow resistance.The actuator of axially aligning can turn round with rotatable portion, and is positioned at the flow path outside with further raising flow.

Another object of the present invention provides a kind of valve, and this valve comprises a separate type venturi tube with first and second parts, is nonaxisymmetrical with respect to central shaft between these parts.Up to now, the structure of conventional venturi tube is coaxial, and therefore, for any given transverse section, the outer periphery equates apart from the distance of central shaft.The present invention puts into practice completely different owing to have a kind of nonaxisymmetrical or eccentric Venturi tube that is divided into two parts with these standardization.These two-part stream each other link to each other, fluid with very little variation among interface advances another part from a flow separation.And such flow path can be semicircular.By being separated from the standardization practice of axisymmetric Venturi tube, the present invention can utilize its unique opening and closing performance preferably.Another object of the present invention is to comprise at least the inner ancon of rotation that links to each other with a part in two-part, and therefore along with the rotation of this part, inner ancon is guided into valve outlet port end with fluid.

Another object of the present invention is to comprise that one uses the axial rotary valve of separate type venturi tube, this Wen's pipe has first and second parts, wherein has at least the part can be outside and flow coefficient is not had the axial rotor of substantial effect and rotates by being positioned at flow path.Another purpose of this target is for a kind of axial rotary valve is provided, and this valve is designed to provide laminar flow (that is, under various conditions, avoiding flow separation and/or air pocket under the current intelligence fully).

Certainly, other purposes of the present invention are disclosed in the every other part of specification or claims.And these targets and purpose reflect various other targets and purpose among the various embodiment in the mode of independence or subordinate.

Description of drawings

Shown in Fig. 1 a is the chart of pressure drop of the present invention as the test result of flow function, by with some markets on the axial rotary valve that obtains compare to demonstrate significant improvement of the present invention.

Shown in Fig. 1 b is the chart of measured loss coefficient of the present invention as the function of reynolds' number, by with some markets on the axial rotary valve that obtains compare and demonstrate great improvement of the present invention once more.

Shown in Figure 2 is along the sectional view of standard-sized sheet direction from a side perspective.

Shown in Figure 3 is along the sectional view of complete shut-down direction from a side perspective.

Shown in Figure 4 is the end view of the first portion (8) among the nonaxisymmetrical eccentric embodiment of shown in Fig. 3.

Shown in Figure 5 is the end view of the second portion (18) among the nonaxisymmetrical eccentric embodiment of shown in Fig. 3.

Shown in Figure 6 is the end view of the Sealing at the interface place between first and second parts.

Shown in Figure 7 is as the end view of the Sealing at the interface place between first and second parts of the alternate embodiments of Fig. 6.

Shown in Figure 8 is the perspective section view of an alternative embodiment of the invention, has a coupling sleeve that surrounds the part of first and second parts.

Shown in Figure 9 is a perspective view of coupling sleeve.

Shown in Figure 10 is a side view of coupling sleeve.

Shown in Figure 11 is cross-section profile shown in Figure 10.

Shown in Figure 12 is perspective assembled view shown in Figure 8.

Shown in Figure 13 is is equipped with a housing, an ABAP Adapter and is axially aligned another embodiment that outlet end and is axially aligned actuator.

Shown in Figure 14 is Figure 13 side view.

Shown in Figure 15 is has the view of detailed structure of the second portion (18) of groove, floor and a clamp holder.

The view of the detailed structure of the first portion (8) that shown in Figure 16 is has groove, floor and retainer.

The embodiment of the valve on shown in Figure 17 the is outer side surface that can be installed in sidewall or surface.

Shown in Figure 180 is the sectional view of Figure 17, has valve and the associated components under assembled state followed.

Shown in Figure 19 is the semi-section view of axially aligning the alternative embodiment of actuator.

Embodiment

As previously mentioned, the present invention includes the various purposes that can realize as required and with the various parts that are used in combination.The present invention includes the various embodiments of axial rotary valve.Especially, design the present invention is mainly used to utilize low friction loss, high efficiency, the high flow capacity of the separate type venturi tube that passes the special and novel off-centre of structure, and make up and improve according to the needs to different shape, size and orientation, this will explain it when the explanation accompanying drawing in more detail.Distinguishing out parts, function and the technology of characteristics of the present invention will point out in suitable place.

Understand easily, basic design of the present invention can embody in every way.It not only comprises method but also comprise the device of realizing proper method.In this patent, the partial results that method realizes with various described devices and when using intrinsic step come open.They just utilize the inevitable outcome of described device.In addition, when disclosing some devices, can think that they not only realize some method, and can change in every way.Importantly, with regard to foregoing, all these aspects should be believed to comprise within the disclosure.

Fig. 2 shows the sectional side view of the axial rotary valve of the eccentric split type Wen of a standard-sized sheet.One fluid (4) begins to enter valve from the left side of valve (2).Valve can have a central axis (6), and this central axis (6) can play the effect of the center line of valve for traditional valve.When fluid (4) entered valve (2), this flow may at first be run into a first portion (8) with one first longitudinal axis (10) and one first flow path (12).Fluid (4) can be passed in interface (14) in the transition flow region (16) along a first-class rotation axis (11) and advance and enter a second portion (18).Second portion (18) can have its oneself second flow axes (21), one second longitudinal axis (20), one second flow path (22), and a diameter (24).Along with moving on of this flow, this flow can pass an outlet (26) and go out.This outlet in certain embodiments can comprise an inner ancon (28), so that help fluid (4) is directed in the valve outlet port end (30).

First portion (8) can be a fixed muffle in valve (2) inside.What is called is fixed, and is the gyrobearing that means in use that usually first portion generally remains unchanged with respect to valve.First portion (8) can pull down or can be connected more firmly from valve, for example makes itself and valve make an integral body, welding, brazing filler metal, bonding, pressure assembling or the like, and this is known for a person skilled in the art.A scheme of first portion (8) is that it can be a bobbin assembly that can disassemble in order to keep in repair or to change.As a bobbin assembly, it can be included in the bobbin Sealing (32) at all places place, and this is suitable and known for a person skilled in the art.

First portion (8) can comprise the eccentric part of a separate type venturi tube.Venturi tube commonly used comprises one from a major diameter to a minor diameter and then to a large diameter section of seamlessly transitting.One of the special use of this valve is divided into two-part at least Venturi tube.Locate at split type, interface (14) has formed a transition flow region (16) that is reduced to cross sectional area increase from a cross sectional area.Use the first portion (8) of work generally to have an eccentric separate type venturi tube with second portion (18) (will be described in more detail below), therefore,, fluid (4) is ended by rotating second portion.

When fluid (4) when first portion (8) moves on and contact separate type venturi tube (34), it will run into an inlet inclined-plane (36).The inclined-plane (36) that enters the mouth in certain embodiments can constitute a cone-shaped that has the identical gradient with respect to longitudinal axis around the flow path periphery.Yet in a preferred embodiment, this inclined-plane can form an eccentric inclined-plane.So-called eccentric, mean that it relates to an inclined-plane along a vertical perspective view, and can comprise inclined-plane as shown in Figure 2 that wherein this flow path can have different ramp rates around the periphery of flow path.This will comprise that the center that makes fluid (4) deflects into first-class rotation axis (11) from longitudinal axis (10).Similarly, an eccentric inclined-plane meeting deflection flow path makes its second flow axes (21) along the center pass second portion (18), then to second longitudinal axis (20).First-class rotation axis (11) and second flow axes (21) are to pass the central axis of the flow path of first portion (8) and second portion (18), and reach first inclined-plane (36) and enter when forwarding inclined-plane (40) then downwards in the separate type venturi tube (34) when flow upwards forwards to, can change relative height with respect to central axis (6).First longitudinal axis (10) and second longitudinal axis (20) can coincide with the central axis that passes valve (6) in a preferred embodiment.When flow towards transition flow region (16) when moving on, the gradient can reduce.In a preferred embodiment, this inclined-plane can be a flat slope, that is to say, the cross sectional area that the interface (14) in transition flow region (16) is located neither reduces also not increase.In a preferred embodiment, the inclined-plane in the first portion (8) it seems that the inclined-plane that does not have second portion on (18) is steep.Thereby these inclined-planes can be different.Inclined-plane in the first portion can be about 5-15 degree, and other angle also is fit to, and for some embodiments, the inclined-plane of 9-11 degree may be suitable.

Except the off-centre of separate type venturi tube, the cross sectional area that is passed in the flow path that illustrates more accurately among Fig. 3 can be nonaxisymmetrical, for example approximate half-circular.So-called semicircle, and do not mean that accurate 180 ° that are not limited to full circle; It can have different shape, these shapes can comprise remove as shown in Figure 6 and Figure 7 to along the area of passage of the flow path of fluid (4) outside the requirement of diametric sealing approximate half.The non-axisymmetric scheme of Fig. 4 is relevant with the transverse section area of passage.For example, first-class rotation axis (11) is presented at the center of cross sectional area, and wherein this central representation is to the mid point of the distance of periphery.In other words, the point on the periphery of area of passage is not equidistant apart from first-class rotation axis (11).Similarly, in Fig. 5, second portion (18) can have a transverse section area of passage around the respective shapes of second flow axes (21), so that consistent with the cross sectional area and the flow path of first portion (8).

Turn back to Fig. 2 again, when flow passed the interface (14) that is positioned at transition flow region (16), this flow entered second portion (18).Those skilled in the art will appreciate that in the transition flow region, because the characteristic of separate type venturi tube, may be minimum by the pressure that this fluid forms.Yet,, can on the interface (14) that is positioned between first portion (8) and the second portion (18), exert pressure such as the static pressure of the material of fluid closed position (in Fig. 3, illustrating in greater detail).If necessary, one first Sealing (38) can be set in interface (14).

When fluid passed second portion (18) and flows, the pressure of this fluid increased gradually and speed descends.Test result shows that for the flow characteristic of the best, and in order to obtain littler friction loss and the flow of Geng Gao, the inclined-plane (40) of second portion (18) may be more important than first inclined-plane (36).Inclined-plane (40) can be with the angle tilt of an about 5-15 degree, and in a preferred embodiment, is approximately the 7-8 degree.Slenderness ratio can be 6: 1 at least, and preferably at least 8: 1.In other words, the diameter (24) that the length of second portion in the preferred embodiment (18) cans be compared to second portion (18) most is to six times of the youthful and the elderlys, so that obtain the best flow characteristic that reduces pressure drop and raising flow velocity under given pressure and diameter.See that in many cases, this inclined-plane can be avoided the air pocket of flow separation and/or fluid at fluid when first portion flows into second portion and pass second portion.Air pocket and flow separation will be discussed below in more detail.

On some positions of second portion (18), fluid (4) can pass an outlet (26) and go out.In order to help to reduce the pressure drop of fluid, seamlessly transit more desirable.The section of seamlessly transitting in the outlet (26) can comprise an inner ancon (28).This inside ancon can be connected with second portion (18) stream or be in aggregates with second portion (18).In many examples, ancon in aggregates can be connected with first portion (8) stream.When fluid passes outlet and may pass inner ancon (28) and when going out, bootable this fluid passes valve outlet port end (30).In certain embodiments, it may be useful the exit seal spare (42) that an outlet interface (44) that is positioned between outlet (26) and the valve outlet port end (30) locates being set.This exit seal spare (42) can further be strengthened the sealability that specific use may need.Valve outlet port end (30) can comprise hose connector commonly used, hose cock or the like, and later on the people in the industrial production with common general knowledge.For further assistance fluid outflow exit region and by the valve outlet port end, inner ancon can be round shape (according to the semi-circular cross-section of preferred embodiment) by moulding (for example casting, molded, machining or the like), thereby make fluid can continue to enter the valve outlet port end shape of the known general circle of the people of related domain, for example a hose cock.

In a preferred embodiment, a valve actuator (48) can be done vertically in order to rotation second portion (18), and wherein second portion (18) can be called as a rotatable sleeve.As previously discussed, axially one of pressure loss of rotary valve (reach the pressure loss about 20%) has valve rod in flow path.As can be seen, the valve actuator (48) that moves in axial mode is positioned at the flow path outside in Fig. 2.Valve break among Fig. 2 can directly be connected on the rotatable sleeve of second portion (18) effect, also can be in aggregates with this rotatable sleeve.Thereby and such as in U.S. Patent No. 4,532, the disclosed typical shaft that is positioned at is compared to the valve break of the flow path with fluid (4) of rotary valve in 954, and valve break (48) does not produce or produce hardly the pressure loss.In order to make this valve events, only need the valve break from fully open position to the about half-turn of complete shut-down rotated position.Those skilled in the art knows that sealing gasket or other seal element (46) can be used for sealing this valve to avoid along the internal leakage in the zone of valve break (48).

Similar with the first portion (8) in being included in as a bobbin, second portion (18) can be a bobbin similarly also.If in more lasting mode first portion (8) is fixed on the appropriate location, this may be suitable especially.Thereby if want to change and maintenance, the bobbin assembly can comprise other parts of valve break, inner ancon, outlet and second portion (18), even may comprise first Sealing (38), keeps in repair thereby can finish quick and be easy to.

In order to help the sealing of first portion (8) and second portion (18), an axial compression element (50) can be set.For example, in a preferred embodiment, axial compression element (50) can be a spring or Bellville ring, and this is known for a person skilled in the art, perhaps can be other biasing member.

This axial compression element design also has an extra benefit.Those of ordinary skill in the art knows, in pipe-line system, owing to " water hammer " that have water or other fluid to produce is a general problem.In fact, the rapid variation of fluid flow can produce very big momentum.If do not absorb this energy method, water hammering can make pipeline advance to split.Sometimes, pipe-line system compensates this water hammer effect by the obstructed extension part of an end that pipeline is set, and this extension part has contained the accumulation air of pressurized gas effect.Use the present invention of this axial compression element to eliminate or reduced this requirement at least.For example, when the valve quick acting when blocking flow, may produce water hammer effect at ducted fluid mass, and the valve member in upstream or downstream or other ductwork components are applied power.Elastic reaction by compressing member can sponge the rapid variation of fluid momentum and the energy that is produced vertically.When water hammer effect took place, the axial compression element can compress, and can absorb some energy at least.

Another aspect of the present invention can comprise an exhaust-valve (52) is set.Exhaust-valve (52) can comprise an emptying plug (54), an emptying biasing element (56) and an emptying seat (58).For example an exhaust-valve actuator (60) that is positioned on the second portion (18) can be pushed emptying plug (54) to emptying seat (58) when being transferred to an appropriate location, and makes the evacuation port sealing when having flow condition.When forwarding the exhaust-valve actuator to a deviation position, this emptying biasing element (56) makes emptying plug (54) depart from emptying seat (58), and allows the drainage of proper volume.

In the disadvantageous occasion of environmental conditions, microthermal climate for example, it is reasonable that a thermal boundary is set in pipeline.Pipeline (62) can be the exterior section of valve body.Usually, it can contain some metallic materials, for example brass, iron and steel, copper, bronze or the like, and this it is known to those skilled in the art that.Because metal generally is the conductor relative with insulator, pipe surface is exposed to and can impels valve to freeze under the hostile environment condition.In this occasion, a thermal boundary (64) preferably is set and pipeline is divided into first conduit component (66) and second conduit component (68) at least.This thermal boundary can be can stop adverse environment to be transmitted to the element of pipeline downwards as the material of non heat conductivity plastics, insulator or any other.One of scheme of this valve is that it can be so that thermal boundary be positioned at different positions.

Shown in Figure 3 is to be in the locational valve of complete shut-down.It is motionless that first portion (8) keeps, and in this case, second portion (18) has rotated 180 degree around its longitudinal axis.In the preferred embodiment, the longitudinal axis and central shaft (6) are overlapping.Yet it also is possible that other embodiment changes this alignment.Can imagine to obtain that in many cases, the longitudinal axis is substantially parallel with central shaft (6) at least.So-called parallel, except as otherwise noted, mean to comprise the substantially parallel of about at most 30 deviations of spending.

As shown in Figure 3, inner ancon can forward the position of non-alignment with respect to valve outlet port end (30) to.As shown in Figure 2, between the inside ancon (28) located of outlet interface (44) and valve outlet port end (30), a Sealing is arranged.Therefore, in some embodiments, can there be first Sealing (38).And as shown in Figure 3, valve actuator (48) has rotated about 180 degree or half way around simply to realize the throttling of convection cell (4).This close apace or throttling can be used for many kinds of situations.Also expressed the exhaust-valve actuator (60) that is positioned at away from the rotational position of exhaust-valve (52) among Fig. 3, be subjected to bias voltage at this rotational position emptying plug (54) and leave emptying seat (58).

As previously mentioned, Fig. 2 and 3 has expressed first Sealing (38).Fig. 3,6 and 7 has expressed circumferential seal (70) and radial seal (72) (being equivalent to a lineal shape radial seal (76) and a curve radial seal (82)).When second portion (18) and first portion (8) when forcing together each other, first Sealing (38) that works by circumferential seal (70) and radial seal (72) can limit fluid (4) leak into the second portion (18) from first portion (8).It also can limit in the space (74) that leaks between pipeline (62) and first and second part.

Term " sealing " is a functional term.Therefore, the element of a separation is not necessary.For example, many test results show that many materials just can have sealability originally and needn't need an independent Sealing.Derlin for example ^TMUsually be considered to a kind of duroplasts, and seem also enough soft (hardness is about 80), therefore with regard to its function, can realize sealing.Such sealing can be by being strengthened first portion (8) and the coarctate each other axial compression element of second portion (18) (50).Derlin ^TMAnother advantage well as if it still be a self-lubricating plastic.In other words, when rotating before and after it, it can also prevent to scratch.Other material that possibility can be provided is other polymer, pottery, various metals or the like.Can change suitable material according to specific purposes.For example, well-known is that softer material prevents that the wearing and tearing of abrasive material are better than hard material.Therefore, just as known to persons skilled in the art, those materials that have than low hardness are more suitable for multiple situation.And although pipeline (62) is described with metallic forms, it is complete feasible adopting the pipeline that has as other material of plastics etc.In many cases, pipeline even can be made of flexible pipe at least can be like this in a part.

And, just as known to persons skilled in the art, can adopt the Justified flanged pipe that between first portion (8) and second portion (18), perhaps has two Sealings in certain embodiments.Certainly, also can adopt other mode of execution.In many cases, whether Sealing even be not too important is arranged between first and second parts.Come concrete change according to market and the commercial problem of paying close attention to.

Having expressed valve rotor (48) links to each other with second portion (18).Certainly, other mode of execution also is possible.For example, because the sealing of the relative space of fluid (74) between first and second parts can be rotated second portion (18) so can pass the valve actuator of installing the side of pipeline (62).Because in fact it can even can be positioned at the outside of the flow path of fluid (4) around second longitudinal axis (20) rotation second portion (18), so such valve actuator also can be counted as an axial rotor.

Shown in Figure 6 is the end view of first Sealing (38).As mentioned above, first Sealing (38) can be replaced by first portion (8) or second portion (18) or both special materials with regard to function.First Sealing (38) can comprise a circumferential seal (70).This circumferential seal shown in Fig. 2 and 3 can seal the outer periphery of first and second parts.First Sealing (38) also can comprise a radial seal (72), and expression is rectilinear radial seal (76) substantially more significantly in Fig. 6.As shown in Figures 2 and 3, radial seal (72) can be positioned at the junction point of first and second parts that rotate relative to one another around separately longitudinal axis.As shown in Figure 3, can make the thickness of radial seal and width and the cross sectional area that is drawn when second portion rotates to throttle position, can bear whole pressure of fluid (4).This can relate to the factor known to intensity, pressure, diameter and other those skilled in the art of material usually.So-called radially, this term mean comprise various picture circles, eccentric circular, rectangle, foursquare transverse section and other cross-sectional area.In test result, as if the area of passage of Fig. 4 (78) corresponding with the opening area of Sealing in Fig. 6, therefore, locate such as diameter (24) with area of passage, area of passage (78) may be not less than flow path in the preferred embodiment 40% (various percentages of in this patent, describing and element be similar to and can change according to the flow quantity of certain conditions and needs.)。Lineal shape radial seal (76) shown in Fig. 6 and circumferential seal (70) are basically in same plane.

Shown in Figure 7 is an alternative embodiment of radial seal (72).Although it is rectilinear radial seal substantially that Fig. 6 has expressed one, the present invention is not restricted like this.It can comprise the Sealing of radial form.Sealing comprises the curvilinerar figure radial seal (82) shown in the image pattern 7 like this.In many cases, in the place that needs high flow capacity, minimum throttling meeting is relatively good.Therefore, the cross sectional area of radial seal preferably minimizes to obtain higher flows.

The objective of the invention is for the pressure drop by valve is minimized, even also be like this under higher flows.The increase that may cause pressure drop by turbulent flow, the separation of flowing and/or air pocket.Its feature that flows in the conduit component (comprising valve) is loss coefficient usually, and this coefficient is directly proportional with pressure drop by element, and is inversely proportional to the density of fluid, with square being inversely proportional to of liquid speed.Flow coefficient can be by formula $K_L=\mathrm{\&Delta;P}/1/2\mathrm{\&rho;}{\mathrm{<figure-callout\; id="2"\; label="V"\; filenames="A0315621300401.png"\; state="\{\{state\}\}">V</figure-callout>}}^2$ Represent, wherein K _LThe expression flow coefficient, Δ P represents pressure drop, ρ represents the density of fluid, and V represents the mean velocity of fluid in the nominal pipeline.

By processing and be used for the inclined-plane (40) of aforesaid eccentric separate type venturi tube, even may be by using an inner ancon (28), loss coefficient just can minimize (apparent, can take in addition and other steps that replace, these steps can cause low loss coefficient.)。This may obtain to have the valve than low pressure loss under the high flow condition.Test result has shown that loss coefficient of the present invention is less than those existing axial rotary valves.The scope of the loss coefficient of such valve is around 4 or littler (obviously, this numerical value is to be used for covering approximating 4 scope rather than being accurate to 4.000, and this sets up too to other expressed in this application numerical value.)。For preferred embodiment, scope can be 3.5 or littler.By relatively, resemble that ' loss coefficient of the axial rotary valve of disclosed other types has been measured as 15 in 954 under comparable flow condition at above-mentioned reference.The present invention has the littler loss coefficient of axial brake valve loss coefficient than the other types that are used for market.As known to the those of skill in the art, the loss coefficient on the certain limit flow can be constant relatively, and therefore improvement of the present invention can be used widely.

Another scheme of the present invention relates to flow separation.When fluid is flowed through an incomplete fairshaped sharp-pointed object, just flow separation may take place.When flow became enough big, the streamline of the liquid stream of this object of flowing through was just no longer identical with the borderline phase of liquid stream.In fact, in fact fluid can turn at separated region, and in fact this reduced an effective area of section of closing pipeline.(referring to Munson, Bruce, Young, Donald, Okiishi, Theodore, Fundamentals of Fluid Mechanics, p.558 (John Wiley ﹠amp; Sons 2d.ed.1994)) therefore, the liquid flow point causes higher loss coefficient on the whole from causing higher pressure drop.Design the present invention for this reason so that the liquid flow point from minimize or eliminate the liquid flow point from.

A further object of the invention is to have flowing of no air pocket in certain embodiments.Particularly the embodiment described in Fig. 2 and 3 can help the realization of this purpose.Usually, transition flow region (16) is an important zone that helps avoid air pocket.Just as known to persons skilled in the art, when flow characteristic produced pressure gradient and surpasses the vapor pressure of given fluid under predetermined temperature, air pocket will take place.In many cases, by processing and be used for the transition flow region of above-mentioned eccentric separate type venturi tube, under complete circulation status, in this zone of valve, can avoid air pocket to take place at least.Usually, in a preferred embodiment, this zone should be as far as possible greatly with consistent with target of the present invention and purpose suitably to alleviate the air pocket problem.

In many examples, liquid stream also can be laminar flow to a certain degree.Such just as known for those skilled in the art, although may not be the border laminar flow of laminar flow from the microcosmic existence, the present invention also may obtain the laminar flow on the microcosmic.Laminar flow is exactly the fluidised form that a kind of fluid flows with laminated form.May there be the mixing of macroscopic view between the adjacent fluid layer.For example, can see laminar flow by somewhere a kind of stain being introduced in a fluid stream to produce a streamline, this streamline flow is crossed the part of valve and is not had variation in fact.In this case, for the valve of certain size, under given pressure condition, laminar flow can be represented by hanging down the mobile smoothness that frictional loss and high flow form.Such just as known for those skilled in the art, laminar flow characteristics is relevant with reynolds' number.Therefore by selecting a kind of suitable curve, this curve can comprise the above-mentioned the sort of type in slope (40) that is used for eccentric separate type venturi tube, can control caliber (being the area of section at any set point place in the Venturi tube) and mean velocity carefully, so that can not surpass suitable reynolds' number and flow in the some parts of separate type venturi tube also is to a certain extent laminar flow, and can comprise the major component of second portion (18).(discussion of flow separation, air pocket and laminar flow aspect needn't comprise flowing by outlet and inner ancon.)

About restriction characteristic, can see, in a preferred embodiment, owing to adopt the eccentric separate type venturi tube of semicircle to rotate the rotation of first portion (8) and second portion (18), when valve was closed, a very little area of the flow path of first portion (78) was corresponding with one of the flow path of second portion very little area.In other words be exactly, use sub-fraction radially " cake " come the less change of control flow rate.

Shown in Figure 8 is an alternative embodiment of the invention, although adopt the variation of pipeline may accomplish generally there is not pipeline (68) beyond doubt.First portion (8) and second portion (18) have on its outer surface a bit improve (although can realize the improvement of inside) so that and coupling sleeve (90) suitable.Shown in Fig. 2 and 3, wherein a part is a fixed element usually, and as first portion, and another part is a rotatable element.Therefore, coupling sleeve (90) can be gone up sealing by the interface (14) between two-part, and makes the rotatable member that has or do not have external pipe (68) rotate.For coupling sleeve is remained on interface region, can adopt first block (94) in the first portion (8) and second block (92) on the second portion (18).Perimeter seal recited above (70) can be lived any fluid-tight to prevent that it from leaking in the coupling sleeve and arrive in the surrounding environment.Perhaps, (not shown go out) coupling sleeve self can have its self-Sealing, O RunddichtringO or the like for example, thus any side sealing of interface (14) can be lived, this interface can be with perimeter seal (70) running, or running alone.

Shown in Figure 8 is further improvement of the present invention.Coupling sleeve can be used for helping rotatable portion is transformed into various orientation.Coupling sleeve (90) can comprise an indexing clamp holder (104), and this clamp holder has more detailed diagram in Fig. 9-12.This indexing clamp holder can turn round with indexing positioning work piece (96), thereby valve rotates to appointed positions.Shown in the indexing positioning work piece is to link to each other with second block, but it also can be positioned at other place, for example on first block or What is more is independent of any one block, and can contain ratchet and positions.This used term " connection " or its derivative be used for comprising fixing or connect or even become one, decide according to the needs of concrete application and market and manufacturing.Because in a preferred embodiment, valve runs to standard-sized sheet from complete shut-down in half way around, and these indexing parts can match with this two-part relative position.Similarly, can comprise a lot of indexing positioning work pieces (for example, changeing distribution), thereby valve has a plurality of blocks or ratchet and a plurality of dislocation with 1/8th.

The another kind that adopts Fig. 9-11 to carry out the embodiment shown in Fig. 8 and 12 of detailed icon improves and comprises a hermetic separation element or mechanism.In many purposes, the Sealing in interface region may owing to each other or the contact friction that spreads all on the surface of revolution of valve cause premature wear.The present invention can comprise the hermetic separation element, in case the rotation at the beginning, this element with Sealing separate with reduce wearing and tearing.In the preferred embodiment, the hermetic separation element can use with Placement or as the part of the structure of indexing positioning work piece and indexing clamp holder.It also is possible adopting other structure.Usually, Sealing can seal (or by utilizing some indexing clamp holders or like to arrive some other positions that need) when valve is positioned at closed position, that is, Sealing can work in common mode by sealing or seal some surfaces each other.On this position, indexing positioning work piece (96) can mesh in the indexing clamp holder (104).When rotating, the end face of coupling sleeve can be on the indexing positioning work piece, axially mobile coupling sleeve, and pass coupling sleeve, interface (14).Therefore, Sealing can temporarily separate.

In order to regulate this separation structure.Can carry out various adjustings at end face.Detailed structure is shown among Fig. 9-11 in conjunction with the assembly thematic map among Figure 12.One longer surface is used for controlling separates, so employing is controlled the axial displacement that is used to separate than the interaction of the axial length of length surface and indexing positioning work piece.Illustrate short face (100) equally, this shorter surface is used for being controlled at the sealing of the different amount position of valve in rotary course.For example, may need one 90 or 180 sealings of spending, needed size is processed into vertically with indexing positioning work piece (96) in short surface (100) at this place, so Sealing has just been realized sealing in that part of rotary course.Certainly, the present invention can comprise various resolution element.In one embodiment, Sealing is once opening almost separation immediately and then sealing back together when valve is in full open position.The length surface structure is a stepped surfaces example of structure that can be referred to as to have ladder together; Other examples comprise having a transition cone structure, and this structure can utilize cone mechanism that Sealing is sealed on the indexing positioning work piece gradually or promptly once rotating.

In order to help to separate (or other suitable position), can limit but mobile rotatably coupling sleeve with the first and second section axial ground at the interface place.When coupling sleeve combines with indexing positioning work piece (96) and disengagement and when changing axial displacement, first and second parts also can change its displacement to axial.In order to realize that by axial displacement this separation, valve can comprise the one first coupling sleeve spill clamp holder (106) and the first coupling sleeve convex clamp holder (112).For example, the convex clamp holder can be positioned at that first portion (8) goes up and the spill clamp holder is positioned on the coupling sleeve, but these clamp holders that yes is oppositely relative.A kind of similar structure can be restricted to coupling sleeve on the second portion (18) by using the second coupling sleeve spill clamp holder (108) and the second coupling sleeve convex clamp holder (110).At least in the concave/convex shape clamp holder can so that coupling sleeve have arrive first or some of the matching surface of second portion relatively move so that wearing and tearing of compensation sealing part and various manufacturing tolerances are referred to herein as the slip clamping.This respect compare with the respective width of the second coupling sleeve convex clamp holder (110) at the second coupling sleeve spill clamp holder (108) of a broad and embody (can use in protruding/spill clamp holder one or two all use).Therefore, the spill clamp holder can promote and separate Sealing when it is meshed with the convex clamp holder.Yet the difference of relative width has been considered the variation aspect axial dimension and has also been considered sealing.The axial compression element (50) that discusses above can keep the Sealing bias voltage to sealing surfaces, and can be along with the running together that moves axially of first and second parts.In a preferred embodiment, for fear of the coupling sleeve external leaks, can provide other Sealing.This can be and the similar cover of above-mentioned ducted O RunddichtringO.And the pipeline of coupling sleeve shown in can Fig. 2 uses together, and pipeline can provide the sealing of pipeline outer periphery or sealing is not provided when proposing concrete environment.

In the embodiment of Fig. 2, outlet can contain an inner ancon (28) helps guide fluid (4) to enter valve outlet port end (30).An angled outlet end is a kind of structure more generally.Yet, can obtain improved flow characteristic by other structure.Just express a kind of scheme in Figure 13 and 14, had an outlet end of axially aligning (118).It also can contain the actuator of axially aligning (116), for example a handwheel that links to each other with second portion.Because Sealing is the upstream that is positioned at outlet, for example be positioned near the interface, be possible so adopt such alternative structure.In this embodiment, in most of valves, one has an outlet of flowing of aliging with the longitudinal axis does not need to change flow direction, therefore, and can the augmented flow coefficient.

The embodiment of Figure 13 and 14 also illustrates a housing (114), an ABAP Adapter (134) and an assembling nut (136).Housing (114) can link to each other with coupling sleeve or standing part, and therefore, coupling sleeve (90) and/or standing part can keep static when rotating rotating part.Housing also can increase the stability and the rigidity of valve assembly.ABAP Adapter (134) can be used for valve is connected on the piping of running system.It can adopt engage thread, welding manner or with the Placement known to multiple those skilled in the art.Assembling nut (136) can link to each other with ABAP Adapter also can provide a kind of traditional approach of standing valve, is connected on the pipe-line system simultaneously.And, in order further to implement sealing, can have an additional encryption sealing (120).

Figure 15 and 16 has expressed the details of first and second parts of valve.In a preferred embodiment, adopt die casting process, certain floor (124) and groove (122) can reduce cost of material, have reduced the difficulty of die casting, and have alleviated weight.And as previously mentioned, the convex clamp holder (110) and (112) that are used for coupling sleeve is fixed to various piece can be molded into that part of.Yet, as discussed above, turn around, with the spill die casting advance first or second portion in and advance in the coupling sleeve convex die casting also passable.In the zone that Sealing between first and second parts is placed usually, for example at the interface place, the casting surplus that also can have some to be used for sealing supporting (126) and (130), sealing supporting structure can support when flow is subjected to throttling between first flow region (132) and second flow region (128) to improve sealing effect.Certainly, any amount of these elements can form by the processes that is different from die casting, so above-mentioned example should not constitute (to of the present invention) restriction.

Shown in Figure 17 and 18 (being the sectional view that has associated components of Figure 17) is an embodiment of valve platform (140), and this valve platform can be used for the outside of wall or other installation surface.Valve platform (140) can casting processing form.The valve platform can be used as the housing of actuator, backflow protection device, valve outlet port end and other associated components.The valve platform can also have an actuator channel (142), can arrive actuator (156) and rotate this actuator by this passage.Valve platform (140) can also comprise an installation outlet (144), by this outlet, can arrive backflow protection device (146), and with this backflow protection device with axially align the valve outlet port end of outlet end (118) or the outlet of another kind of form couples together as above-mentioned.The backflow protection device Sealing (148) of one this installation outlet of sealing can be used for multiple situation, and prevents the backflow protection device rotation when rotatable sleeve (18) rotates.One backflow protection device Sealing (150) can help the internal surface of this backflow protection device and the sealing between the turnbarrel when turnbarrel rotates.The valve platform can also have a drain hole (152).In this embodiment, owing to seal in the upstream of these parts, so drain hole can be simplified.Therefore, when valve is in the closed position, the emptying that this embodiment can only need once align and be trapped in the fluid in the turnbarrel (18) to finish between drain hole (152) and emptying opening (153).Another Sealing (154) can be used to seal turnbarrel and valve platform (140).(the many effects that can when rotary component rotates, play lubricated supporting and lubricated sleeve in these Sealings.)

Also expressed an actuator engages element (158) in Figure 18, this element links to each other with actuator (156).In this embodiment, actuator is positioned at the outside of streamline, and this is that the present invention thinks favourably of.The one turnbarrel engaged element (160) that links to each other with rotatable element (18) accordingly matches with the actuator joint element to assist to rotate rotatable sleeve.These engaged elements can be chain drive mechanism, gear drive, pinion and rack, cam mechanism and other various mechanism.What do not show is that these engaged elements have the stroke that some blocks are assisted limiting actuator at various diverse locations.

Shown in Figure 19 is a substitute of axially aligning actuator (162), and a semi-section has a gearing.Rotor (164) can be a handle or some other suitable devices that has the mechanization rotor.In this embodiment, the internal surface of rotor matches to form a pinion and rack with a gear.Therefore gear ring (166) is meshed with first gear (168), and first gear links to each other with axle (170).Axle links to each other with second gear again, and this second gear is meshed with second gear ring (174), thereby rotates rotatable shaft (18).Certainly, for the portability of rotational velocity or rotation, can adopt different gear rings and/or gear ratio to adjust velocity ratio.

In many examples, compare with other conventional valve with valve gap, valve seat, threaded joint, the actuator that links to each other with rotatable portion with axial manner can alleviate the complexity of valve.In many cases, actuator only need rotate with the control valve fluid, and in the preferred embodiment, actuator only needs approximately to rotate half way around to move to the complete shut-down position from standard-sized sheet.Directly compare with the above-mentioned valve that other has the valve rod that is positioned at flow path, this actuator can be positioned at outside the flow path substantially.

Very natural, can change to realize target and the purpose identical top alternative embodiment with these embodiments, this all comprises within the scope of the present invention.For example, internal structure can change.Housing (114) can form one with coupling sleeve (90).For different purposes, can be with or without the indexing element.This indexing element can be positioned at position far away, or can shape, position, quantity or the like represented aspect change.Many embodiments can not have first and second blocks on first and second parts, and convex and the spill clamp holder structure of other embodiment shown in can not having.And spill and convex structure can place conversely and form convex and concave structure on the opposed member.First portion can be a rotatable sleeve and second portion can be a fixed muffle, and perhaps two-part can both rotate, or be fixed with some on two-part can be at other parts of these partial interiors rotations.Some can have the element of avoiding flow producing flow separation and/or air pocket, other then can not have such element.Some can have various Sealings, and other just can not have these Sealings, and the certain optimal flow length of can having of other is also arranged simultaneously, other then need not be concerned about very much optimal flow length.Therefore, various changes can be arranged, and all consistent with the creative scheme of this patent.The problem that market and manufacturing are paid close attention to has determined corresponding mode of execution of the present invention.

The discussion of front and following claim only are the descriptions to the preferred embodiments of the present invention.Particularly with regard to claim, should be clear and definite be under the situation that does not break away from essence of the present invention, to have many kinds to change.About this point, intention obtains identical in fact result's change to a certain extent in identical in fact mode, all will fall within the scope of the present invention.

Although comprised the different details of the method for the system that relates to, but still comprised the original rights requirement of valve.Certainly, those claims have and are used for desired various other the many purposes of method and apparatus of whole patent.The ins and outs of disclosed device or method are enough to support to have axial rotary valve, drain hole, non-axisymmetric Venturi tube.The four corner of the method and apparatus claim of inner ancon, the no cavitation layer flow structure of nothing separation etc.Can clearly comprise such details although increase these, the formation that vested in possession requires can comprise each other global schema.Under unconfined condition, the disclosure should comprise dependent claims, comprises the method or the device of some embodiment in aforesaid each other global schema.In addition, anyly utilize the modification of essence of the present invention all can fall among the protection domain that surrounds by the present invention naturally to a certain extent.Because it is conceived substantially and understands and can use widely, this is consistent especially with the present invention.

As previously described, the present invention can implement in every way.In addition, each in the various elements of the present invention and claims also can obtain in every way.The disclosure should be understood to include each such change, and it is an embodiment's of any device embodiment, method or process implementing example variation, perhaps or even a kind of conversion of these embodiments' element.It needs to be noted, when the disclosure relates to element of the present invention, even being used for the word of each element can be represented by the term or the method term of equality unit-function or come to the same thing also passable only.Like this be equal to, generality or more general term should think and be enclosed within the explanation of every kind of element or action.Such term can make clearly local substitute (these words) of implicit relative broad range word used in the present invention at needs.For example such example it should be understood that all actions can be expressed as one and are used for carrying out the device of that action or produce the element of that action.Equally, the tangible element of disclosed each all should be understood that to comprise the disclosure of the action that this tangible element finishes.About last aspect, for example the implication of " Sealing " should comprise disclosure to " sealing " This move-no matter whether touched upon clearly-and, conversely, iff disclosing " sealing " This move, a kind of so open also should being believed to comprise discloses a kind of " Sealing ".Such change and replacement term should be understood that clearly to be included in the specification.

In claims all possible mode of execution of the present invention being described not is simple possible, this usually with can be independently or jointly comprise the present invention of the scheme as axial rotary valve and target of the present disclosure and purpose and be consistent and realize.Clearly comprise such details although can increase these, the formation of existing claim should comprise such scheme.Although desired in the present invention method is not further discussed such degree, they all are the derivation of the nature of system or equipment claim.Therefore, when the step of they rather than claim the system or equipment claim use and make in when being self-evident, method is carried out special or further discusses just to appear to there is no need.And, organize step with form than logic; Yet other operation also may and can occur really.Therefore, claim to a method should not constitute and only comprises the operation that occurred and the order of step.In addition, should be noted that, term " by ... form " mean to have a kind of meaning that comprises and not a kind of exclusive meaning.Thereby should explain and to provide the wideest lawful scope to this application people with its maximum extension form.Therefore, for example Australian in foreign country, this term does not think to have the meaning a kind of exclusiveness or that further limit.

And, be set forth in the reference in any information disclosure of the application's initial application in any reference that the application that request patents mentions and all and all be used by reference thus.Yet inconsistent although some statement may be considered to the behavior that patents with application of the present invention, such statement obviously can be considered to be made by the claimant.

Claims (83)

1. valve with the periphery in valve flow road and described valve flow road comprises:

One has the rotatable Venturi tube of Venturi tube flow path;

One Venturi tube part of described rotatable Venturi tube, its can around the rotation of the longitudinal axis of described valve and

One Venturi tube periphery of described rotatable Venturi tube, it is arranged to comprise the part of the described periphery in described valve flow road.

2. valve as claimed in claim 1 is characterized in that, described rotatable Venturi tube can axially rotate.

3. valve as claimed in claim 2 is characterized in that, the described Venturi tube that can axially rotate is basically parallel to described flow path rotation.

4. valve as claimed in claim 2 is characterized in that, but the described Venturi tube that can axially rotate comprises an axial rotating separate type venturi tube.

5. valve as claimed in claim 1 is characterized in that, described rotatable Venturi tube comprises an axial eccentric Venturi tube.

6. valve as claimed in claim 2 is characterized in that, the described Venturi tube that can axially rotate comprises an axial eccentric Venturi tube that can axially rotate.

7. valve as claimed in claim 1, it is characterized in that, described rotatable Venturi tube comprises first Venturi tube part and the second Venturi tube part, and this first Venturi tube partly has first flow path and the first flow path periphery, and this second Venturi tube partly has second flow path and the second flow path periphery.

8. valve as claimed in claim 7 is characterized in that, at least a portion of each described first Venturi tube part and second Venturi tube part is nonaxisymmetrical with respect to the central shaft of described valve.

9. valve as claimed in claim 8 is characterized in that, the described first and second venturi portion branches comprise an eccentric flow surface.

10. valve as claimed in claim 8 is characterized in that, the described non-axisymmetric part of described first and second Venturi tubes part respectively comprises an eccentric semicircle.

11. valve as claimed in claim 7 is characterized in that, at least a portion of at least one in the described Venturi tube part comprises an eccentric part.

12. valve as claimed in claim 11 is characterized in that, described eccentric part comprises a semicircle eccentric part.

13. valve as claimed in claim 7 is characterized in that, described venturi portion branch is arranged to axially align.

14. valve as claimed in claim 13 is characterized in that, described venturi portion branch is arranged to axially align with complete currency structure.

15. valve as claimed in claim 7 is characterized in that, at least one in the described Venturi tube part is arranged to prevent substantially that the gamut inner fluid in described part from separating.

16. valve as claimed in claim 15 is characterized in that, at least one in the described Venturi tube part is arranged to prevent separate starting from the gamut inner fluid of described part at interface place between described first and second parts.

17. valve as claimed in claim 15 is characterized in that, described venturi portion branch comprise one fairshaped flow domatic.

18. valve as claimed in claim 17 is characterized in that, the described domatic slope that comprises an about 7-8 degree of flowing.

19. valve as claimed in claim 7 is characterized in that, the described second Venturi tube part is rotatable.

20. valve as claimed in claim 19 is characterized in that, described second venturi portion is divided rotatable with respect to the described first Venturi tube part, thereby control flows is through the flow of described valve.

21. valve as claimed in claim 19 is characterized in that, the described flow path by described second portion comprises a nonaxisymmetrical flow path with respect to described central shaft.

22. valve as claimed in claim 21 is characterized in that, the described flow path by described first portion comprises a nonaxisymmetrical flow path with respect to described central shaft.

23. valve as claimed in claim 22 is characterized in that, described nonaxisymmetrical flow path comprises semicircular nonaxisymmetrical flow path.

24. valve as claimed in claim 7 is characterized in that, also comprises an axial rotor, this rotor is used for rotating one of described Venturi tube part and do not have substantial the contact with the described part of described Venturi tube part in the described flow path.

25. valve as claimed in claim 24 is characterized in that, described axial rotor is arranged on the outside of described flow path.

26. valve as claimed in claim 24 is characterized in that, described axial rotor with respect to the position of described flow path inside to the influence of flow coefficient less than 20%.

27. valve as claimed in claim 24 is characterized in that, the longitudinal axis that described axial rotor is arranged to be used for around described Venturi tube part axially rotates described Venturi tube part.

28. valve as claimed in claim 7 is characterized in that, described rotatable Venturi tube comprises an axial eccentric Venturi tube.

29. valve as claimed in claim 28 is characterized in that, described axial eccentric Venturi tube comprises a basic semicircle eccentric Venturi tube near described interface.

30. valve as claimed in claim 7 is characterized in that, also comprises the transition flow region of described valve, and first Sealing in the transition flow region between described first and second parts.

31. valve as claimed in claim 7 is characterized in that, also comprises an inside ancon that is provided with in described Venturi tube part.

32. valve as claimed in claim 7 is characterized in that, also comprises the axial compression element that is used at the corresponding relation bias voltage of described Venturi tube part.

33. valve as claimed in claim 7 is characterized in that, one in the described Venturi tube part is rotatable.

34. valve as claimed in claim 33 is characterized in that, described rotatable venturi portion branch is arranged to be used for preventing from substantially to produce air pocket in the gamut of described Venturi tube part.

35. valve as claimed in claim 34 is characterized in that, described rotatable Venturi tube is arranged to prevent from substantially to produce air pocket in the gamut of the described rotatable Venturi tube that starts from the interface place between described part.

36. valve as claimed in claim 33 is characterized in that, described rotatable venturi portion branch comprises having a length, and this length is enough to fundamentally eliminate the flow separation through described rotatable Venturi tube part.

37. valve as claimed in claim 33 is characterized in that, described rotatable venturi portion branch comprises having than the bigger length of another Venturi tube part.

38. valve as claimed in claim 42 is characterized in that, but described valve be arranged in described rotatable Venturi tube part half cycle change within complete opening and closing fully.

39. valve as claimed in claim 1 is characterized in that, it is 4 or littler loss coefficient that described valve is suitable for producing quantity.

40. the method that flows of valve is passed through in an improvement, this valve has the periphery in valve flow road and described valve flow road, may further comprise the steps:

Longitudinal axis rotation around described valve has the part of the rotatable Venturi tube of a Venturi tube flow path,

The Venturi tube that rotates described rotatable Venturi tube is peripheral to a part that comprises described valve flow road periphery, and

Improve flowing of described fluid by described valve.

41. improvement as claimed in claim 40 is by the method that flows of valve, described rotatable Venturi tube comprises a first portion and a second portion, and is further comprising the steps of: in described first portion, reduce the pressure of described fluid, increase the speed of described fluid; And in described second portion, increase the pressure of described fluid, reduce the pressure of described fluid.

42. improvement as claimed in claim 40 also comprises the step that prevents described fluid flow separation substantially by the method that flows of valve.

43. improvement as claimed in claim 40 is further comprising the steps of by the method that flows of valve:

Limit the described fluid that flows through from described valve at least in part;

Rotate to the small part enable possition around the part of the described longitudinal axis described rotatable Venturi tube; And

Described fluid is flowed.

44. improvement as claimed in claim 40 is characterized in that by the method that flows of valve described rotation step comprises a part that adopts an axial rotor to rotate described rotatable Venturi tube, described axial rotor is in the outside of the described flow path of described valve.

45. improvement as claimed in claim 44 is by the method that flows of valve, it is characterized in that the step that adopts an axial rotor to rotate the part of described rotatable Venturi tube comprises: adopt a part that does not have an axial rotor of materially affect to rotate described rotatable Venturi tube to flow coefficient.

46. improvement as claimed in claim 45 is characterized in that by the method that flows of valve, adopts the part that influence is rotated described rotatable Venturi tube less than an axial rotor of 20% to flow coefficient.

47. improvement as claimed in claim 43 is characterized in that by the method that flows of valve described step to the small part restriction comprises: around the described longitudinal axis described rotatable Venturi tube is rotated to the small part closed position.

48. improvement as claimed in claim 40 is characterized in that by the method that flows of valve, described rotation step is included in described rotatable Venturi tube half cycle and described Venturi tube is partly rotated to complete opening within changeing and close fully.

49. improvement as claimed in claim 40 is characterized in that by the method that flows of valve the step of the part of the described rotatable valve of described rotation comprises the fixedly lengthwise position of keeping described part.

50. improvement as claimed in claim 41 is characterized in that by the method that flows of valve described rotation step comprises a part that adopts an axial rotor to rotate described rotatable Venturi tube, described axial rotor is in the outside of the described flow path of described valve; The step that described employing one axial rotor rotates the part of described rotatable Venturi tube comprises that employing does not have an axial rotor of materially affect to rotate the second portion of described rotatable Venturi tube to flow coefficient.

51. improvement as claimed in claim 40 is characterized in that by the method that flows of valve the step of the part of the described rotatable Venturi tube of described rotation comprises: rotate the part of described rotatable Venturi tube but flow coefficient is not produced substantial influence.

52. improvement as claimed in claim 41 is by the method that flows of valve, it is characterized in that the step of the part of the described rotatable Venturi tube of described rotation comprises: rotate the second portion of described rotatable Venturi tube but flow coefficient is not produced substantial influence.

53. improvement as claimed in claim 40 is characterized in that by the method that flows of valve described rotation step comprises a part of axially rotating described rotatable Venturi tube.

54. improvement as claimed in claim 53 is characterized in that by the method that flows of valve, the described step of axially rotating comprises and is basically parallel to the part that described flow path rotates described rotatable Venturi tube.

55. improvement as claimed in claim 53 is characterized in that by the method that flows of valve the described step of axially rotating comprises that the central axis that is basically parallel to described valve rotates the part of described rotatable Venturi tube.

56. improvement as claimed in claim 40 is characterized in that by the method that flows of valve, comprises that also the loss coefficient that the described valve of flowing through forms is 4 or littler.

57. improvement as claimed in claim 41 is by the method that flows of valve, it is characterized in that the described step that reduces described pressure, increases described speed and increase described pressure, reduces described speed comprises: little by little reduce described pressure and increase described speed and little by little increase described pressure and reduce described speed.

58. improvement as claimed in claim 41 is characterized in that by the method that flows of valve the step of the part of the described rotatable Venturi tube of described rotation comprises the described second portion of rotation.

59. improvement as claimed in claim 58 is characterized in that by the method that flows of valve the step of the described second portion of described rotation comprises the inside ancon that rotates described second portion.

60. improvement as claimed in claim 58 is characterized in that by the method that flows of valve, also comprises the angle of changing described second portion corresponding to described first portion.

61. improvement as claimed in claim 58 is characterized in that by the method that flows of valve the step of described rotation second portion comprises that employing one axial alignment actuator rotates described second portion.

62. improvement as claimed in claim 61 is by the method that flows of valve, it is characterized in that the step that described employing one axial alignment actuator rotates described second portion comprises: employing one is positioned at described flow path outside, does not have the axial alignment actuator of materially affect to rotate described second portion to flow coefficient.

63. improvement as claimed in claim 41 is characterized in that by the method that flows of valve, also comprises the step that prevents substantially in the fluid flow separation of described second portion.

64., it is characterized in that the described step that prevents flow separation substantially comprises provides one streamlined mobile domatic as the method that flows of the described improvement of claim 63 by valve.

65., it is characterized in that the described step of flow separation that prevents substantially comprises a length that flows through described second portion as the method that flows of the described improvement of claim 63 by valve.

66. improvement as claimed in claim 41 is characterized in that by the method that flows of valve, the described pressure that reduces described fluid in first portion, the step that increases the speed of described fluid comprise: provide a gradient to be approximately the domatic of 7-8 degree.

67. improvement as claimed in claim 41 is by the method that flows of valve, it is characterized in that, also comprise and adopt an outer circumferentially Sealing and to be located substantially on the step that radial seal in the described outer circumferentially same plane of Sealing comes described first and second parts of plane sealing.

68. improvement as claimed in claim 41 is by the method that flows of valve, it is characterized in that the described step that reduces described pressure and increase described speed comprises: in nonaxisymmetrical flow path, reduce described pressure and increase described speed with respect to the central axis of described valve.

69. as the method that flow of the described improvement of claim 68 by valve, it is characterized in that the described step that reduces described pressure and increase described speed comprises: in nonaxisymmetrical flow path, increase described pressure and reduce described speed with respect to the central axis of described valve.

70. as the method that flow of the described improvement of claim 69 by valve, it is characterized in that, describedly in nonaxisymmetrical flow path, reduce described pressure and increase described speed and the step that increases described pressure and reduce described speed in nonaxisymmetrical flow path comprises: in the eccentric nonaxisymmetrical flow path of semicircle, reduce described pressure and increase described speed, and in the eccentric nonaxisymmetrical flow path of semicircle, increase described pressure and reduce described speed.

71. improvement as claimed in claim 41 is by the method that flows of valve, it is characterized in that the described step that reduces described pressure and increase described speed comprises: in an eccentric flow path, reduce described pressure and increase described speed with respect to the central axis of described valve.

72. as the method that flow of the described improvement of claim 71 by valve, it is characterized in that the described step that reduces described pressure and increase described speed comprises: in an eccentric flow path, increase described pressure and reduce described speed with respect to the central axis of described valve.

73. as the method that flow of the described improvement of claim 72 by valve, it is characterized in that, describedly in an eccentric flow path, reduce described pressure and increase described speed and the step that increases described pressure and reduce described speed in an eccentric flow path comprises: in a semicircle eccentric non-axisymmetric runner, reduce described pressure and increase described speed, and in a semicircle eccentric non-axisymmetric runner, increase described pressure and reduce described speed.

74. the method that flows of valve is passed through in improvement as claimed in claim 41, it is characterized in that, also is included in the step that increases described pressure and reduce described speed to keep streamline flow.

75. as the method that flow of the described improvement of claim 74, it is characterized in that, also be included in the step that reduces described pressure and increase described speed and keep streamline flow by valve.

76. as the method that flow of the described improvement of claim 75, it is characterized in that, also be included in the step that reduces described pressure and increase described speed and prevent the step that air pocket flows substantially by valve.

77. improvement as claimed in claim 41 is characterized in that by the method that flows of valve, also is included in the step that reduces described pressure and increase described speed and prevents the step that air pocket flows substantially.

78. improvement as claimed in claim 41 is characterized in that by the method that flows of valve, also is included in the step that increases described pressure and reduce described speed and prevents the step that air pocket flows substantially.

79. improvement as claimed in claim 41 is characterized in that by the method that flows of valve, also comprises an interface that flows through between described first and second parts.

80., it is characterized in that the described step that flows through interface comprises that flowing through a semicircle eccentric flow moves the road as the method that flows of the described improvement of claim 79 by valve.

81. as the method that flow of the described improvement of claim 79 by valve, it is characterized in that described interface to small part seals, also being included as described sealing interface increases by an axial pressure element.

82. improvement as claimed in claim 41 is characterized in that by the method that flows of valve, also comprises and utilize an axial compression element to compensate water hammer effect.

83. improvement as claimed in claim 40 is characterized in that by the method that flows of valve the step of the described part of the described rotatable Venturi tube of described rotation comprises: rotate described part to axially aligning with the second portion of described rotatable Venturi tube.

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