CN205956418U - Fluid control valve and be used for fluid control valve's internals subassembly - Google Patents
Fluid control valve and be used for fluid control valve's internals subassembly Download PDFInfo
- Publication number
- CN205956418U CN205956418U CN201620719564.5U CN201620719564U CN205956418U CN 205956418 U CN205956418 U CN 205956418U CN 201620719564 U CN201620719564 U CN 201620719564U CN 205956418 U CN205956418 U CN 205956418U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve plug
- cypriot
- plug
- components
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model provides a fluid control valve, has main part, seating ring, the valve cage adjacent with the seating ring, sets up the first valve plug subassembly in the valve cage and set up the second valve plug subassembly in the axial hole of first valve plug subassembly. First valve plug subassembly has: radial hole, radial hole and axial hole fluid intercommunication, and first valve plug, first valve plug includes axial hole and the throttle port that communicates with this axial hole fluid. First valve plug subassembly can and the closed position of seating ring joint and opening of separating of seating ring remove between the position. Second valve plug subassembly has a second valve plug, the second valve plug can and the closed position of first valve plug joint and opening of separating of first valve plug remove between the position.
Description
Technical field
Put it briefly, present disclosure is related to control valve for fluids, specifically, present disclosure relates to fluid control
The controlled trim assemblies of cascade of valve.
Background technology
In specific applications it may be necessary to have the control valve for fluids of high flow capacity control range.For example, in low discharge shape
Control valve for fluids may be needed in the case of pressure drop is larger under condition, and pressure drop is less under high flow capacity situation.Due to
The big port sizes of larger control valve for fluids, traditional control valve for fluids can not meet these demands.
A kind of possible mode solving these application-specific is to use the big control valve for fluids of the valve cage with feature.These
Valve cage in control valve for fluids is characterised by multistage (multistage) at low row journey, to resist under high pressure during low discharge
Fall.In consideration of it, control valve for fluids must be bigger than typical control valve for fluids, to provide larger flow control capability.But,
Larger control valve for fluids generally has larger port sizes, so this control valve can not control low discharge or low-down
Flow.
The another way solving these applications is using two detached valves.By using two valves, can make
Controlled with minor valve have high pressure decline low discharge, and can control using big valve have low-pressure decline
High flow capacity controls.But, the use of two separation valves increased cost and space requirement required for specific installation.
Utility model content
In view of traditional control valve for fluids can not meet pressure drop under low discharge situation larger and in high flow capacity situation
The problem accurately controlling is provided, illustrative aspects of the present utility model provide one kind in the case of lower pressure drop is less
Control valve for fluids, including main body, seat ring, is set to the valve cage adjacent with described seat ring, the first valve being arranged in described valve cage
Plug assembly and be arranged on the second cypriot valve components in described first cypriot valve components.Described main body limit entrance, outlet and
Passage between described entrance and described outlet, and described seat ring is arranged in described passage.Described valve cage is arranged on institute
State between entrance and described outlet and include multiple radial openings.Described first cypriot valve components include multiple radial holes and first
Valve plug, described first valve plug has the axial hole being in fluid communication with described radial hole and the throttling being in fluid communication with described axial hole
Port.Described first valve plug can move between closing position and open position, wherein in described closing position, described first
Valve plug is engaged with described seat ring, and in described open position, described first valve plug and described seat ring are separated.Described second valve plug group
Part is arranged on the described axial in the hole of described first cypriot valve components, and includes the second valve plug, and described second valve plug can be in institute
State in the first cypriot valve components and move between closing position and open position, wherein in described closing position, described second valve plug
Engage with described first valve plug, in described open position, described second valve plug is separated with described first valve plug.
Further according to any one or more aspects in aforementioned exemplary aspect of the present utility model, control valve for fluids
Any one or more preferred forms in any combination in following preferred form can also be included.
In a preferred form, the plurality of radial hole passes through described first valve plug to be formed.
In another preferred form, described first cypriot valve components include keeper and spring, and described keeper is fixed to
Described first valve plug, described spring is arranged in described keeper and between described first valve plug and described second valve plug, its
In, described second valve plug is biased away from described first valve plug by described spring, and the plurality of radial hole passes through described holding
Part and formed.
In another preferred form, described spring is isolated with process fluid.
In another preferred form, described first valve plug includes tapering point.
In another preferred form, described second cypriot valve components include described second valve plug is connected to the valve of actuator
Bar.
In another preferred form, described second valve plug includes the one or more holes through this second valve plug, so that
Described second valve plug pressure balance.
In another preferred form, described second valve plug includes：Part I, Part II and seating face, described
The diameter with diameter greater than described throttle port of Part I, the diameter of described Part II is less than the described of described throttle port
Diameter, described seating face makes described first valve plug engage with described second valve plug in described closing position.
In another preferred form, described second valve plug includes：From described Part II extend conical portion and
The Part III extending from described conical portion, and described Part III has part and the planar portions of generic cylindrical
Point.
In another preferred form, described second valve plug includes the Part III extending from described Part II, and
Described Part III is generic cylindrical and includes one or more grooves.
In another preferred form, described first valve plug includes multiple co-annular passages, the plurality of annular concentric
Passage is axially aligned with around described throttle port, and described second valve plug includes multiple annular concentric protuberances, described many
Individual annular concentric protuberance is configured to be received in corresponding passage.
In another preferred form, each passage has width, wherein, the described width of each passage be less than closer to
The width of the adjacency channel of described throttle port, and the plurality of protuberance is respectively provided with identical width.
According to another illustrative aspects of the present utility model, a kind of trim assemblies for control valve for fluids, described interior
Part assembly includes：Seat ring, be set to the valve cage adjacent with described seat ring, the first cypriot valve components being arranged in described valve cage, with
And it is arranged on the second cypriot valve components in described first cypriot valve components.Described valve cage be arranged on the entrance of described control valve for fluids with
Between outlet and include multiple radial openings.Described first cypriot valve components include multiple radial holes and the first valve plug, and described
One valve plug has the axial hole being in fluid communication with described radial hole and the throttle port being in fluid communication with described axial hole.Described
One valve plug can move between closing position and open position, wherein in described closing position, described first valve plug with described
Seat ring engages, and in described open position, described first valve plug and described seat ring are separated.Described second cypriot valve components are arranged on institute
State the described axial in the hole of the first cypriot valve components, and include the second valve plug, described second valve plug can be in described first valve plug
Move between closing position and open position in assembly, wherein in described closing position, described second valve plug and described first
Valve plug engages, and in described open position, described second valve plug is separated with described first valve plug.
Further according to any one or more aspects in aforementioned exemplary aspect of the present utility model, for fluid control
The trim assemblies of valve processed can also include any one or more preferred forms in any combination in following preferred form.
In a preferred form, the plurality of radial hole passes through described first valve plug to be formed.
In another preferred form, described first cypriot valve components include keeper and spring, and described keeper is fixed to
Described first valve plug, described spring is arranged in described keeper and between described first valve plug and described second valve plug.Institute
State spring and described second valve plug is biased away from described first valve plug, and the plurality of radial hole passes through described keeper and shape
Become.
In another preferred form, described spring is isolated with process fluid.
In another preferred form, described second cypriot valve components include described second valve plug is connected to the valve of actuator
Bar.
In another preferred form, described second valve plug includes the one or more holes through this second valve plug, so that
Described second valve plug pressure balance.
In another preferred form, described second valve plug includes：Part I, Part II and seating face, described
The diameter with diameter greater than described throttle port of Part I, the diameter of described Part II is less than the described of described throttle port
Diameter, described seating face makes described first valve plug engage with described second valve plug in described closing position.
In another preferred form, described first valve plug includes multiple co-annular passages, the plurality of annular concentric
Passage is axially aligned with around described throttle port, and each passage has width.The described width of each passage be less than closer to
The width of the adjacency channel of described throttle port.Described second valve plug includes multiple annular concentric protuberances, the plurality of concentric
Annular protrusion is configured to be received in corresponding passage, and each protuberance has identical width.
According to the utility model, single, less, provide in compact control valve for fluids and there is high flow capacity control model
The control valve for fluids enclosing.Additionally, control valve for fluids described herein and trim assemblies can be provided for less flow of fluid
More accurately control.
Brief description
Fig. 1 is the sectional view of the control valve for fluids with exemplary cascade trim assemblies；
Fig. 2A is the partial enlarged drawing of the cascade trim assemblies of Fig. 1；
Fig. 2 B is the partial enlarged drawing of a part for cascade trim assemblies of Fig. 2A；
Fig. 3 A is the sectional view of the cascade trim assemblies of Fig. 1, and the wherein first and second cypriot valve components are in the close position；
Fig. 3 B is the sectional view of the cascade trim assemblies of Fig. 1, and the wherein first cypriot valve components are in the close position, the second valve
Plug assembly is in a fully open position；
Fig. 3 C is the sectional view of the cascade trim assemblies of Fig. 1, and the wherein first cypriot valve components are in a partly opened position, the
Two cypriot valve components are in a fully open position；
Fig. 3 D is the sectional view of the cascade trim assemblies of Fig. 1, and the wherein first and second cypriot valve components are in an open position；
Fig. 4 is the enlarged side view of a part for exemplary second valve plug for second cypriot valve components of Fig. 1；
Fig. 5 is putting of a part for another kind of exemplary second valve plug used in second cypriot valve components of Fig. 1
Big side view；
Fig. 6 is putting of a part for another kind of exemplary second valve plug used in second cypriot valve components of Fig. 1
Big side view；
Fig. 7 is the sectional view of the control valve for fluids with another kind of exemplary cascade trim assemblies；
Fig. 8 is the partial enlarged drawing of a part for cascade trim assemblies of Fig. 7；And
Fig. 9 is the sectional view of the control valve for fluids with another kind of exemplary cascade trim assemblies.
Specific embodiment
Example fluid control valve described herein and trim assemblies provide two controlled valve plugs cascading, and they are single
, provide in less, compact control valve for fluids there is the control valve for fluids of high flow capacity control range.First larger valve plug
Big flow of fluid can be controlled with valve cage, and the second less valve plug can control little flow of fluid exactly.Therefore,
Because the second less valve plug needs less port sizes, so control valve for fluids described herein and trim assemblies can carry
For more accurately controlling for less flow of fluid.
Referring to Fig. 1,2A and Fig. 2 B, a kind of example fluid control valve 10 generally includes main body 20, which defines entrance 22,
Export 24 and be arranged on the passage 26 between entrance 22 and outlet 24.Trim assemblies 100 are arranged in main body 20, and example
As valve gap 30 being fixed to main body 20 using screwing element 40 and nut 42, so that trim assemblies 100 are maintained in main body 20.
Trim assemblies 100 generally include seat ring 110, valve cage 120, the first cypriot valve components 200 and the second cypriot valve components 300.
Seat ring 110 is standard cylindrical well known in the art or annular seat ring, and seat ring 110 is arranged on main body 20
In passage 26, between entrance 22 and outlet 24, to provide for the seating face being engaged with the first cypriot valve components 200.
Valve cage 120 is standard cylindrical valve cage well known in the art, and valve cage 120 be arranged on entrance 22 and outlet 24 it
Between and adjacent with seat ring 110 it is possible to for seat ring 110 is fixed in passage 26.Formed many by the wall 124 of valve cage 120
Individual opening 122 generally diametrically, to allow process fluid to flow to outlet 24 from entrance 22 by valve cage 120.Depending on tool
The application of body, can form radial opening 122 with any size, shape and/or pattern.
First cypriot valve components 200 are arranged in valve cage 120 so that the first cypriot valve components 200 can in valve cage 120 axially
(along longitudinal axis A) is mobile.First cypriot valve components 200 include the first valve plug 210, and it can be at closing position (Fig. 1,2A, 3A and 3B)
Move and partial open position (Fig. 3 C) and open position (Fig. 3 D) between, wherein in closing position, the first valve plug 210 sealing connects
Close seat ring 110 and stop process fluid flowing by the radial opening 122 in valve cage 120, in partial open position, the first valve plug
210 are separated with seat ring 110, and it allows a part by radial opening 122 for the process fluid flowing, and stops process fluid stream
Dynamic another part by radial opening 122, in open position, the first valve plug 210 and seat ring 110 are separated, and allow process
Flow of fluid passes through radial opening 122.
Form axial hole 212 in the side of the first valve plug 210, and axial hole 212 extends longitudinally into the first valve plug 210
In.Throttle port 214 extends lengthwise through the first valve plug 210, coaxial with axial hole 212, and with axial hole 212 fluid even
Logical.Additionally, the first cypriot valve components 200 include the multiple radial holes 202 being in fluid communication with axial hole 212.In Fig. 1, Fig. 2A and Tu
In example shown by 2B, extend radially through the first valve plug 210 and form radial hole 202.Alternatively, as the example institute in Fig. 9
Show, radial hole 202 can also pass through the keeper of the first cypriot valve components 200 to be formed, rather than passes through the first valve plug 210.
First cypriot valve components 200 can also have and are fixed to first via screw thread 232 or any other suitable unit
The keeper 230 of valve plug 210.Keeper 230 provides the stroke of the axial movement of the second valve plug 310 to stop (travel stop),
And there is the opening 234 of the valve rod 360 for receiving the second cypriot valve components 300, as discussed below.First valve plug 210,
Keeper 230 forms the cavity 236 for receiving spring 240 or other biasing member together with the second valve plug 310.Spring
240 are arranged in keeper 230, and between the first valve plug 210 and the second valve plug 310, the second valve plug 310 are biased away from
First valve plug 210, and make spring 240 and process fluid isolation, outside spring 240 is maintained at the flow channel of process fluid.
The impact to flow channel for the spring-compressed is avoided outside flow channel spring 240 being maintained at process fluid.For example, if
Spring 240 is among flow channel, then will be reduced by compression with spring 240 by the flow region of spring 240.This
Outward, can avoid or reduce the flow-induced corrosion of spring 240.When the pressure drop on the second valve plug 310 is higher, fluid velocity
Become higher.The high-velocity fluid corrosion to spring 140 is avoided, this extends bullet outside spring 240 is maintained at flow channel
The service life of spring 240.As set forth above, it is possible to observe in fig .9, the radial hole 202 of the first cypriot valve components 200 can be with footpath
Pass through keeper 230 to be formed to ground, rather than pass through the first valve plug 210 to be formed.
Additionally, as institute's optimal viewing in Fig. 2 B, the first valve plug 210 can have with the end of the first valve plug 210 (its with
Seat ring 110 engages) adjacent tapering point 216, to guarantee not having flow dead, and guarantee from through the first of throttle port 214
Cascading flow passage is smoothly converted to cascade flow channel by valve cage 120 and the first valve plug 210 are formed second, as following institute
Discussed in detail.
Second cypriot valve components 300 are arranged in the axial hole 212 of the first valve plug 210 so that the second cypriot valve components 300 can be
In the axial hole 212 of the first cypriot valve components 200, axially (along longitudinal axis A) is mobile.Second cypriot valve components 300 include the second valve plug
310, the second valve plug 310 can in the first cypriot valve components 200 closing position (Fig. 1 and Fig. 3 A) and open position (Fig. 2A, 3B,
3C and Fig. 3 D) between move, wherein in closing position, the second valve plug 310 sealingly engages the first valve plug 210 and stops process streams
The throttle port 214 by the first valve plug 210 for the body flowing, in open position, the second valve plug 310 is separated with the first valve plug 210
And allow process fluid flowing to pass through throttle port 214.Second valve plug 310 is guided by the interior diameter of the first valve plug 210, at some
In example, by the interior diameter guiding of keeper 230, to guarantee the proper alignment of the second valve plug 310 and throttle port 214, Yi Ji
Excellent sealing between two valve plugs 310 and the first valve plug 210.
Valve rod 360 extends through opening 234 in keeper 230 and by the opening in valve gap 30, so that by the second valve
Plug 310 is connected to standard actuator (not shown), so that the second valve plug 310 is moved between the open and the closed positions
Dynamic.Second valve plug 310 can also have one or more holes 312 of Longitudinal extending, so that when the second valve plug 310 and the first valve plug
210 when separating, and makes the second valve plug 310 pressure balance, when the second valve plug 310 and the first valve plug 210 are separated and the first valve
When plug 210 and seat ring 110 are separated, make the second valve plug 310 and the equal pressure balance of the first valve plug 210, so that the second valve plug 310
It is easier to control with the first valve plug 210.
Referring to Fig. 4, the valve tip 314 of the second valve plug 310 includes the Part I with the generic cylindrical of diameter D1
320, wherein diameter D1 are more than the diameter of throttle port 214.The Part II 325 of generic cylindrical has diameter D2, wherein
Diameter D2 is less than the diameter of throttle port 214 so that Part II 325 can be received among throttle port 214.Seating face
330 make Part I 320 and Part II 325 be connected with each other, and make the first valve plug 210 and the second valve plug 310 in closing position
Engage.In the example shown, seating face 330 is generally taper.Additionally, valve most advanced and sophisticated 314 and by valve tip
The seating face of the first valve plug 210 of 314 joints can be made up of hardened material, to avoid valve most advanced and sophisticated 314 and the first valve plug
210 corrosion.
In order to provide more accurately the controlling of very little flowing of the process fluid through throttle port 214 for the convection current, the second valve
Plug 310 can also be micro- most advanced and sophisticated (Micro Tip), or can control the tip of any other type of microfluidic, such as Fig. 5
Shown in valve tip 314A.Similar to valve tip 314, the valve tip 314A of replacement includes the Part I with diameter D1
320 are more than the diameter of throttle port 214 with the Part II 325 with diameter D3, wherein diameter D1, and diameter D3 is less than throttling end
The diameter of mouth 214.Seating face 330A makes Part I 320 and Part II 325 be connected with each other, and makes the first valve plug 210 and
Two valve plugs 310 engage in closing position.Different from valve tip 314, the seating face 330A of valve tip 314A generally with first
Points 320 and Part II 325 perpendicular.Additionally, valve tip 314A includes：Extend from Part II 325 and enter throttle port
214 conical portion 340, and extend from conical portion 340 and enter the Part III 350 of throttle port 214.3rd
Part 350 includes the part 352 of generic cylindrical and the angled planar section extending downwardly along cylindrical part 352
354.When the second valve plug 310 is retracted from the first valve plug 210, valve tip 314A allows the flowing of process fluid little by little to increase
Plus.
Micro- top of replacement is shown in Fig. 6.Similar to valve tip 314, the valve tip 314B of replacement is included with diameter
The Part I 320 of D1 and the Part II 325A with diameter D4, wherein diameter D1 is more than the diameter of throttle port 214, directly
Footpath D4 is less than the diameter of throttle port 214.Seating face 330B is generally taper, makes Part I 320 and Part II
325A is connected with each other, and so that the first valve plug 210 is engaged in closing position with the second valve plug 310.Different from valve tip 314, valve
Most advanced and sophisticated 314B includes：Extend from Part II 325A and enter the conical portion 340A of throttle port 214, and from cone
Part 340A extends and enters the Part III 350A of throttle port 214.Part III 350A is generally cylindrical, and wraps
Include one or more grooves 356 that size can increase.When the second valve plug 310 is retracted from the first valve plug 210, valve is most advanced and sophisticated
314B allows the flowing of process fluid to be incrementally increased.As stated above for valve tip 314, valve tip 314B can be by
Hardened material or non-hardened material system are made.Additionally, valve tip 314B can be weldment or individual construction.
At fully closed position (referring to Fig. 3 A), actuator makes valve rod 360 mobile towards passage 26, and this makes the second valve plug
310 are moved to and are sealingly engaged with the first valve plug 210, and make the first valve plug 210 move to sealingly engage with seat ring 110.Cause
This is it is therefore prevented that process fluid passes through the radial opening 122 in valve cage 120 and passes through the throttle port 214 in the first valve plug 210
It flow to outlet 24 from entrance 22.
When actuator starts to make valve rod 360 move away passage 26 that (it makes the second valve plug 310 from closing position (Fig. 3 A)
Move to open position (Fig. 3 B)) when, realize the first cascading flow and control.When valve rod 360 and the second valve plug 310 move away
During one valve plug 210, spring 240 continues to provide power between the second valve plug 310 and the first valve plug 210, and this keeps the first valve plug 210
Hermetically contact with seat ring 110.Spring force required for spring 240 depends on required structure and load.In Fig. 2A
Shown by arrow, in the case that the second valve plug 310 is in an open position and the first valve plug 210 is in the close position, mistake
Cheng Liuti by a part for the radial opening 122 in valve cage 120, and can pass through the radial direction in the first cypriot valve components 200
Hole 202, flow to axial hole 212 from entrance 22.Process fluid can be from axial hole 212 flowing be by the second valve plug 310
Hole 312 so that the second valve plug 310 pressure balance, and outlet 24 is flow to by throttle port 21.When the second valve plug 310 is mobile
Leave the back pressure set up during the first valve plug 210 and can protect the tip of the first valve plug 210 from infringement.When the second valve plug 310 is complete
Entirely open and the first valve plug 210 closure when, process fluid can flow by throttle port 214.Process fluid can be in valve
Downstream part on set up back pressure so that the pressure drop on the first valve plug 210 becomes less.Therefore, when the first valve plug 210 is opened
Begin when opening, pressure drop is less and speed of process fluid is lower, which reduces for the first valve plug 210 and seat ring 110
Flow-induced corrosion, therefore can extend shutoff the life-span.
Once the second valve plug 310 is in a fully open position (Fig. 3 B), the second valve plug 310 just top with keeper 230
Contact.Once the holding of the top contact of the second valve plug 310 and keeper 230, valve rod 360 and the second valve plug 310 leaving channel 26
Continuous movement also will make the first cypriot valve components 200 move away passage 26, and therefore make the first valve plug 210 move away passage
26.When the first valve plug 210 begins to move off passage 26 entering part open position (Fig. 3 C), realize the second cascading flow control
System, the first valve plug 210 will be departed from seat ring 110, and move to the relation separated with seat ring, and this allows process fluid directly to flow
All cross the another part of radial opening 122 in valve cage 120, pass through passage 26, and flow to outlet 24.When the first valve plug
210 when moving away passage, by the first cascading flow of the radial hole 202 in the first cypriot valve components 200 and throttle port 214
To become less, till of completely closed.When the first valve plug 210 moves away seat ring 110, process fluid can flow logical
Cross the hole 312 in throttle port 200 and the second valve plug 310, so that the first cypriot valve components 200 and the second cypriot valve components 300 1
Play pressure balance, this can make them be easier to control, and allows using less actuator.
Valve rod 360 will continue to make the first and second cypriot valve components 200,300 move away passage 26, until they reach volume
Till determining stroke or fully open position (Fig. 3 D), for example, till the top of keeper 230 reaches valve gap 30.When first
Valve plug, when partial open position advances to fully open position, there will be no the first cascading flow by throttle port 214
Flowing, and maximum be will be added to by the second cascading flow of the radial opening 122 in valve cage 120.
When control valve for fluids 10 moves back to fully closed position (Fig. 3 A) from fully open position (Fig. 3 D), the first He
Second cypriot valve components 200,300 will be mobile towards passage 26 first, until the first valve plug 210 moves to seat ring 110 hermetically
Till engaging (referring to Fig. 3 B).When this occurs, decrease process fluid and pass through the radial opening 122 in valve cage 120
Flowing, and therefore there is not the flowing by throttle port 214.During this is mobile, the first and second cypriot valve components
200th, 300 remain pressure balanced.
Once the first valve plug 210 is in the sealing engagement with seat ring 110, valve rod 360 will continue to make the second valve plug 310 court
Passage 26 mobile.When this occurs, process fluid can pass through the radial opening valve cage 120 from entrance 22 flowing
122 part, and entered in axial hole 212 by the radial hole 202 in the first cypriot valve components 200.Process fluid is permissible
From axial hole 212 flowing by the hole 312 the second valve plug 310 so that the second valve plug 310 pressure balance, and pass through throttle port
214 flow to outlet 24.During this is mobile, the second valve plug 310 remains pressure balanced.
Once the second valve plug 310 and the first valve plug 210 sealing engagement, it is prevented from process fluid and flow to outlet from entrance 22
24, and the first and second cypriot valve components 200,300 are no longer pressure balanced.Therefore, in the first cypriot valve components 200 and valve cage
Soft seal part is not needed between 120.This allows in the high temperature with tight shutoff demand is applied using trim assemblies 100.
Referring to Fig. 7 and Fig. 8, show another kind of example fluid control valve 10A, it can be used for declining with high pressure
Application with low flowing.Control valve for fluids 10A and control valve for fluids 10 described above have identical main body 20 and valve gap
30.Additionally, the trim assemblies 100A of control valve for fluids 10A is similar to trim assemblies 100, and include identical seat ring 110 and valve
Cage 120.Although most of element of the first cypriot valve components 200A and the second cypriot valve components 300A and the first cypriot valve components 200 and
Two cypriot valve components 300 are identical, but main difference is that the composition surface between the first valve plug 210A and the second valve plug 310A.
In the first cypriot valve components 200A, include multiple same around the surface 220 of the first valve plug 210A of throttle port 214
Heart circular passage 218, these co-annular passages 218 are axially aligned with around throttle port 214.Each passage 218 can have
There is identical width, or as shown in the example in Fig. 8, the width of each passage 218 can be different.In this specific example
In son, the width of each passage is less than the width of the adjacency channel closer to throttle port 214.Therefore, closest to throttle port
The width W1 of 214 passage 218 is more than the width W2 of the passage 218 farther away from throttle port 214.The table of the second valve plug 310A
Face 375 also includes multiple annular protrusion 370, and it is received in corresponding passage 218, to help provide the first valve plug 210A
And second sealing engagement between valve plug 310A.But, different from passage 218, each protuberance has identical width.With
Passage is identically formed many closer to throttle port 214, width W1, W2 increase of passage 218, and the width of protuberance 370
Level passage, wherein, flows towards throttle port 214 with process fluid, the size of flow channel continues to increase.Shown in Fig. 8
Example in, flow channel A be less than flow channel B, flow channel B be less than flow channel C.This results in the flow channel of increase
Region, to keep optimal pressure drop in each stage.
Fig. 9 shows another kind of example fluid control valve providing design more simpler than control valve for fluids 10
10B.In control valve for fluids 10B, the radial hole 202 of trim assemblies 100B passes through the keeper 230B of the first cypriot valve components 200B
And formed, rather than pass through the first valve plug 210B to be formed, and simplify the second valve plug 310B of the second cypriot valve components 300B,
So that when the second valve plug 310B is in the closing position with the first valve plug 210B sealing engagement, the second valve plug 310B will not stop
Radial hole 202.
Although described above is various embodiments, present disclosure is not intended to be limited to this.Can be to disclosed
Embodiment makes a change, and these changes still fall within the protection domain of appended claims.
Claims (20)
1. a kind of control valve for fluids is it is characterised in that include：
Main body, described main body limits entrance, outlet and the passage between described entrance and described outlet；
Seat ring, described seat ring is arranged in described passage；
Valve cage, described valve cage is arranged between described entrance and described outlet and adjacent with described seat ring, and described valve cage includes many
Individual radial opening；
First cypriot valve components, described first cypriot valve components are arranged in described valve cage, and described first cypriot valve components include multiple footpaths
To hole and the first valve plug, described first valve plug have with described radial hole be in fluid communication axial hole and with described axial hole fluid
The throttle port of connection, wherein, described first valve plug can move between closing position and open position, wherein closes described
Close position, described first valve plug is engaged with described seat ring, and in described open position, described first valve plug is separated with described seat ring
Open；And
Second cypriot valve components, described second cypriot valve components are arranged on the described axial in the hole of described first cypriot valve components, and described
Two cypriot valve components include the second valve plug, and described second valve plug can be in closing position and open position in described first cypriot valve components
Move between putting, wherein in described closing position, described second valve plug is engaged with described first valve plug, in described open position,
Described second valve plug is separated with described first valve plug.
2. control valve for fluids according to claim 1 is it is characterised in that the plurality of radial hole passes through described first valve plug
And formed.
3. control valve for fluids according to claim 1 it is characterised in that：
Described first cypriot valve components include keeper and spring, and described keeper is fixed to described first valve plug, and described spring sets
Put in described keeper and between described first valve plug and described second valve plug, described second valve plug is biased by described spring
Leave described first valve plug；And
The plurality of radial hole passes through described keeper to be formed.
4. control valve for fluids according to claim 3 is it is characterised in that described spring is isolated with process fluid.
5. control valve for fluids according to claim 1 is it is characterised in that described first valve plug includes tapering point.
6. control valve for fluids according to claim 1 is it is characterised in that described second cypriot valve components are included described second
Valve plug is connected to the valve rod of actuator.
7. control valve for fluids according to claim 1 is it is characterised in that described second valve plug is included through this second valve plug
One or more holes so that described second valve plug pressure balance.
8. control valve for fluids according to claim 1 it is characterised in that described second valve plug include Part I, second
Part and seating face, the diameter with diameter greater than described throttle port of described Part I, the diameter of described Part II is little
In the described diameter of described throttle port, described seating face makes described first valve plug and described second valve plug in described closing position
Engage.
9. control valve for fluids according to claim 8 is it is characterised in that described second valve plug is included from described Part II
The conical portion extending and the Part III extending from described conical portion, described Part III has generic cylindrical
Part and planar section.
10. control valve for fluids according to claim 8 is it is characterised in that described second valve plug is included from described second
Divide the Part III extending, described Part III is generic cylindrical and includes one or more grooves.
11. control valves for fluids according to claim 1 it is characterised in that：
Described first valve plug includes multiple co-annular passages, and the plurality of co-annular passages are around described throttle port axially
Ground alignment；And
Described second valve plug includes multiple annular concentric protuberances, and the plurality of annular concentric protuberance is configured to be received in
In corresponding passage.
12. control valves for fluids according to claim 11 it is characterised in that：
Each passage has width, and wherein, the described width of each passage is less than the adjacency channel closer to described throttle port
Width；And
The plurality of protuberance is respectively provided with identical width.
A kind of 13. trim assemblies for control valve for fluids are it is characterised in that described trim assemblies include：
Seat ring；
Valve cage, described valve cage is arranged between the entrance of described control valve for fluids and outlet and, described valve adjacent with described seat ring
Cage includes multiple radial openings；
First cypriot valve components, described first cypriot valve components are arranged in described valve cage, and described first cypriot valve components include multiple footpaths
To hole and the first valve plug, described first valve plug have with described radial hole be in fluid communication axial hole and with described axial hole fluid
The throttle port of connection, wherein, described first valve plug can move between closing position and open position, wherein closes described
Close position, described first valve plug is engaged with described seat ring, and in described open position, described first valve plug is separated with described seat ring
Open；And
Second cypriot valve components, described second cypriot valve components are arranged on the described axial in the hole of described first cypriot valve components, and described
Two cypriot valve components include the second valve plug, and described second valve plug can be in closing position and open position in described first cypriot valve components
Move between putting, wherein in described closing position, described second valve plug is engaged with described first valve plug, in described open position,
Described second valve plug is separated with described first valve plug.
14. trim assemblies according to claim 13 are it is characterised in that the plurality of radial hole passes through described first valve plug
And formed.
15. trim assemblies according to claim 13 it is characterised in that：
Described first cypriot valve components include keeper and spring, and described keeper is fixed to described first valve plug, and described spring sets
Put in described keeper and between described first valve plug and described second valve plug, described second valve plug is biased by described spring
Leave described first valve plug；And
The plurality of radial hole passes through described keeper to be formed.
16. trim assemblies according to claim 15 are it is characterised in that described spring is isolated with process fluid.
17. trim assemblies according to claim 13 are it is characterised in that described second cypriot valve components are included described second
Valve plug is connected to the valve rod of actuator.
18. trim assemblies according to claim 13 are it is characterised in that described second valve plug is included through this second valve plug
One or more holes so that described second valve plug pressure balance.
19. trim assemblies according to claim 13 it is characterised in that described second valve plug include Part I, second
Part and seating face, the diameter with diameter greater than described throttle port of described Part I, the diameter of described Part II is little
In the described diameter of described throttle port, described seating face makes described first valve plug and described second valve plug in described closing position
Engage.
20. trim assemblies according to claim 13 it is characterised in that：
Described first valve plug includes multiple co-annular passages, and the plurality of co-annular passages are around described throttle port axially
Ground alignment, each passage has width, and wherein, the described width of each passage is less than and leads to closer to the adjacent of described throttle port
The width in road；And
Described second valve plug includes multiple annular concentric protuberances, and the plurality of annular concentric protuberance is configured to be received in
In corresponding passage, each protuberance has identical width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620719564.5U CN205956418U (en) | 2016-07-08 | 2016-07-08 | Fluid control valve and be used for fluid control valve's internals subassembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620719564.5U CN205956418U (en) | 2016-07-08 | 2016-07-08 | Fluid control valve and be used for fluid control valve's internals subassembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205956418U true CN205956418U (en) | 2017-02-15 |
Family
ID=57969746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620719564.5U Active CN205956418U (en) | 2016-07-08 | 2016-07-08 | Fluid control valve and be used for fluid control valve's internals subassembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205956418U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107588204A (en) * | 2016-07-08 | 2018-01-16 | 艾默生过程管理(天津)阀门有限公司 | Cascade controlled fluid control valve and the trim for control valve for fluids |
| CN110381784A (en) * | 2017-03-09 | 2019-10-25 | 阿尔弗雷德·卡赫欧洲两合公司 | Improvement related with robot cleaner system and its robot |
-
2016
- 2016-07-08 CN CN201620719564.5U patent/CN205956418U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107588204A (en) * | 2016-07-08 | 2018-01-16 | 艾默生过程管理(天津)阀门有限公司 | Cascade controlled fluid control valve and the trim for control valve for fluids |
| CN110381784A (en) * | 2017-03-09 | 2019-10-25 | 阿尔弗雷德·卡赫欧洲两合公司 | Improvement related with robot cleaner system and its robot |
| CN110381784B (en) * | 2017-03-09 | 2022-03-25 | 阿尔弗雷德·卡赫欧洲两合公司 | Improvements relating to robotic cleaning systems and robots therefor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107588204A (en) | Cascade controlled fluid control valve and the trim for control valve for fluids | |
| US5431188A (en) | Flow trim for choke | |
| US9151407B2 (en) | Valve cage having zero dead band between noise abatement and high capacity flow sections | |
| CN207112082U (en) | Valve cage and cage device | |
| US9383035B2 (en) | Flow control valve | |
| CN106122585B (en) | Valve trim apparatus having multiple fluid flow control members | |
| JP2013532805A (en) | Valve seat device for use with fluidic valves | |
| US11376532B2 (en) | Fluid flow control device having a particle catcher | |
| US10094489B2 (en) | Axial resistance valve trim design | |
| EP2226536A1 (en) | A control ball valve | |
| CN205956418U (en) | Fluid control valve and be used for fluid control valve's internals subassembly | |
| CN108368954A (en) | Multistage anti-surge valve | |
| WO2007046379A1 (en) | Cage valve | |
| US10359118B2 (en) | Valve with integral balancing passage | |
| CN109404606A (en) | Pressure balance type high-precision high voltage difference control valve | |
| JPS60231073A (en) | High pressure fluid control valve | |
| CA2119633C (en) | Flow trim for choke | |
| US11566714B2 (en) | Fluid flow control devices and related systems and methods | |
| CN220488361U (en) | Guide valve suitable for main pressure distribution valve of high-flow water turbine speed regulator | |
| CN205446762U (en) | Multistage single track step -down valve structure | |
| US10436330B2 (en) | Non-rising stem globe valve | |
| RU2372539C1 (en) | Control unit | |
| CN112460277A (en) | Conical anti-cavitation valve cage | |
| CN115388176A (en) | Valve body structure suitable for high-pressure-drop small-flow regulating valve | |
| EP2292955A1 (en) | Gate valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |