CN202188203U

CN202188203U - Actuator for fluid control device with fluid flow control components

Info

Publication number: CN202188203U
Application number: CN2011202976246U
Authority: CN
Inventors: R·安亚格诺斯
Original assignee: Fisher Controls International LLC
Current assignee: Fisher Controls International LLC
Priority date: 2011-08-11
Filing date: 2011-08-11
Publication date: 2012-04-11
Anticipated expiration: 2021-08-11

Abstract

The utility model describes an actuator for a fluid control device having a plurality of fluid flow control members, which includes a first cavity, which includes a first rotary actuator assembly, which includes at least one first rotary diaphragm plate a divider; and a first actuator rod coupled to the at least one first rotary diaphragm plate at a first end and coupled to a second valve plug at a second end; the actuator also Including a second chamber comprising: a second rotary actuator assembly including at least one second rotary diaphragm plate; a divider; and a second actuator rod coupled at a first end to the at least one a second rotary diaphragm plate and is coupled to the first valve plug at the second end; the actuator also includes a main body including a first yoke coupled to the valve and the first yoke coupled to the main body A second yoke between the chamber and the second chamber, and the body defines an aperture such that the first and second actuator rods extend into the first and second chambers and to the valve.

Description

Be used to have the actuator of the fluid control device of a plurality of fluid FLOW CONTROL members

Technical field

This patent relates to actuator, more specifically, relates to the actuator of the fluid control device that is used to have a plurality of fluid FLOW CONTROL members.

Background technique

Process control system uses various field apparatuss to come the control procedure parameter.In some instances, single-acting and/or the double-acting actuator fluid that is used to control through valve flows.

The model utility content

Disclose a kind of actuator that is used to comprise the valve of first valve plug, second valve plug and bonnet, comprised first chamber, said first chamber comprises the first rotary actuator assembly, and it comprises at least one first rotary diaphragm plate; Separator; And first actuator rod, it is coupled to said at least one first rotary diaphragm plate at first end, and is coupled to said second valve plug at second end; Said actuator also comprises second chamber, and said second chamber comprises: the second rotary actuator assembly, and it comprises at least one second rotary diaphragm plate; Separator; And second actuator rod, it is coupled to said at least one second rotary diaphragm plate at first end, and is coupled to said first valve plug at second end; Said actuator also comprises main body; It comprises first yoke that is coupled to said valve and is coupled in said first chamber of said main body and second yoke between second chamber; And said main part limitation eyelet is so that said first and second actuator rods put in said first and second chambeies and extend said valve; Wherein, said at least one the first rotary diaphragm plate and the second rotary diaphragm plate are divided into a plurality of chambers with its said first chamber and second chamber separately, and each said chamber holds barrier film, air bag or actuating component.

For movable and rotary type diaphragm plate and actuator rod independently accordingly; Air and/or control signal can increase the pressure and the pressure that reduces in other chambers in some chambers; Thus (for example with specific direction; Clockwise direction, counterclockwise) driven rotary type diaphragm plate, and moving of control valve plug thus.

Description of drawings

Fig. 1 shows known actuator;

Fig. 2 shows the exemplary twin-tub actuator that is coupled to exemplary three-way valve;

Fig. 3 shows one sectional drawing of the example actuator cylinder of the Fig. 2 that comprises exemplary septum;

Fig. 4 shows one sectional drawing of the example actuator cylinder of Fig. 2 that exemplary septum is removed;

Fig. 5 shows the stereogram and the fragmentary cross-sectional view of the exemplary twin-tub actuator of Fig. 2;

Fig. 6 shows another stereogram of the twin-tub actuator of Fig. 2;

Fig. 7 shows exemplary three cylinder actuators that are coupled to exemplary four-way valve;

Fig. 8 shows the sectional drawing of exemplary three cylinder actuators of Fig. 7;

Fig. 9 shows the stereogram of exemplary three cylinder actuators of Fig. 7.

Embodiment

Some examples are shown in the above-mentioned figure and describe in detail below.In describing these examples, similar or identical reference character is used to identify common or similar elements.From clear and/or succinct purpose, these figure might not be in proportion, and some characteristic of figure may illustrated on the ratio or in schematic representation with some view large.Additionally, in the whole specification several examples have been described.Any characteristic in any example can attach, substitute other characteristics in other examples or combine with other characteristics in other examples.

Said example relates to the example actuator of the valve that is used to have a plurality of fluid FLOW CONTROL members (for example, valve plug).Example actuator can or be used with exemplary three-way valve, exemplary four-way valve and control independently any other fluid control device that fluid flows and/or the fluid of control through a plurality of holes flows more than a fluid FLOW CONTROL member and use.Because said example comprises a plurality of actuating component in single actuator body, so can reduce the complexity and the system length (that is pipeline length) of the control system that is included in this described example.

When example actuator is used to exemplary three-way valve, particularly, when being used for rotary three-way valve, actuator body can comprise the chamber of separation, and rotatable actuator is positioned in those chambeies.Can be with similar or different diameters and/or similar or the cylindrical landform coelosis of different height.The rotary diaphragm plate of rotatable actuator (for example, two boards) can be divided into a plurality of chambers (for example, each diaphragm plate is separated two chambers) with its chamber separately, and each chamber can hold barrier film, air bag or actuating component.For movable and rotary type diaphragm plate and actuator rod independently accordingly; Air and/or control signal can increase the pressure in some barrier films and reduce the pressure in other barrier films; Thus with specific direction (for example, clockwise direction, counterclockwise) driven rotary type diaphragm plate.Alternatively, the edge of rotary diaphragm plate or part can be slidably and/or are engaged the internal surface in corresponding chamber hermetically.For movable and rotary type diaphragm plate and actuator rod independently accordingly; Air and/or control signal can increase the pressure and the pressure that reduces in other chambers in some chambers; Thus with specific direction (for example, clockwise direction, counterclockwise) driven rotary type diaphragm plate.

In these examples, the first rotary diaphragm plate limits eyelet with its corresponding first actuator rod, and second actuator rod passes this eyelet, so that second actuator rod stretches into valve body (for example, rotary three-way valve).Adjustable valve packing can be positioned between bonnet and first actuator rod of rotary valve and/or between first and second actuator rod.First actuator rod can be coupled to be controlled through the first mobile rotary valve plug of the fluid of first port, and second actuator rod can be coupled to control through the second mobile rotary valve plug of the fluid of second port.

When example actuator was used to exemplary four-way valve, except two chambeies that are mounted with rotatable actuator, actuator body can comprise the 3rd chamber, and sliding bar or linear piston assembly are positioned in the 3rd chamber.Control signal can be applied in linear piston to move linear piston and actuator rod separately independently, controls through the fluid of the 3rd port mobile.Spring return (for example, single-acting) or another control signal (for example, double-action) can be used to linear piston is back to neutral gear or failure safe position.

In those examples, the first rotary diaphragm plate can limit eyelet with its corresponding first actuator rod, and second actuator rod passes this eyelet, so that second actuator rod stretches into valve body.Additionally, the second rotary diaphragm plate limits eyelet with its corresponding second actuator rod, and the 3rd actuator rod passes this eyelet, so that the 3rd actuator rod extends into valve body.The 3rd actuator rod is corresponding to linear piston.Adjustable valve packing can be positioned between the bonnet and first actuator rod of valve, between first and second actuator rod and/or between the second and the 3rd actuator rod.First actuator rod can be coupled to control through the first mobile rotary valve plug of the fluid of first port; Second actuator rod can be coupled to be controlled through the second mobile rotary valve plug of the fluid of second port, and the 3rd actuator rod can be coupled to control through the fluid of the 3rd port mobile linearity or sliding bar valve plug.

Fig. 1 shows known rotary actuator 100.Actuator 100 comprises the main body 102 that limits port one 04, to receive supply pressure and/or control signal.Actuator 100 also comprises chamber 106, and barrier film 108, diaphragm plate 110, spring 112 and actuator rod 114 are placed in the chamber 106 at least in part.Be in operation, the control signal that receives through port one 04 acts on first side 116 of barrier film 108, and spring 112 acts on second side 118 of barrier film 108 via diaphragm plate 110.If the power that is applied to barrier film 108 by control signal is greater than the power that is applied to barrier film 108 by spring 112; Then actuator rod 114 to be being moved by arrow 120 indicated directions haply, and be coupled to the lever or the connection set 122 of actuator stem 114 maybe be counterclockwise to move.Yet, if the power that is applied to barrier film 108 by control signal less than the power that is applied to barrier film 108 by spring 112, actuator rod 114 is moving haply with by the opposite direction of arrow 120 indicated directions, and lever 122 possibly move in a clockwise direction.The configuration of the valve that couples according to actuator 100, shift lever 122 maybe can increase fluid through the valve fluid that maybe can reduce through valve that flows and flows in a clockwise direction.

Fig. 2 shows the example actuator 200 that is coupled to exemplary three-way valve 202.Example actuator 200 can be used to independently to move first and

second valve plugs

204 and 206 with respect to separately hole or

seating plane

208 and 210, flows with the fluid of control through it.Actuator 200 comprises main body 212, and it comprises the yoke 214 that is coupled to valve 202, and is coupled in second yoke 215 between first and

second chamber

216 and 218 of main body 212.The first and second

rotary actuator assemblies

220 and 222 can be placed in respectively in first and

second chambeies

216 and 218.

First actuator 220 can comprise first rotatable or rotary piston, diaphragm plate or the blade 224 (in Fig. 3, more being clearly shown that), and it is divided into first Room or chamber 302, second Room or chamber 304, the 3rd Room or chamber 306 and fourth ventricle or chamber 308 with first chamber 216.Barrier film, air bag or actuating component 310-316 can be positioned among the 302-308 of chamber.

In order to rotate the first rotary diaphragm plate 224; Barrier film 310-316 can receive the control signal that increases and/or reduce the pressure among the barrier film 310-316 separately; Promote the first rotary diaphragm plate 224 with specific direction (for example, clockwise direction, counterclockwise) thus.Particularly,, reduce the pressure in

barrier film

312 and 316, and increase the pressure in

barrier film

310 and 314 in order to rotate in a counter-clockwise direction the first rotary diaphragm plate 224.Increase pressure in the

barrier film

310 and 314 and cause that

barrier film

310 and 314 expands and act on the separator 318 and the first rotary diaphragm plate 224 of main body 212.Because separator 318 is static and/or fixing with respect to main body 212, so promote the first rotary diaphragm plate 224 by the expansion applied force of

barrier film

310 and 314 with counter clockwise direction.In order to rotate first diaphragm plate 224 in a clockwise direction, reduce the pressure in

barrier film

310 and 314, and increase the pressure in barrier film 312 and 316.Increase barrier film 312 and pressure in 316 and cause that

barrier film

312 and 316 expands and act on the separator 318 and the first rotary diaphragm plate 224.Because separator 318 is static and/or fixing with respect to main body 212, so promote the first rotary diaphragm plate 224 in a clockwise direction by the power on the diaphragm plate that expansion is applied to 224 of

barrier film

312 and 316.

First actuator 220 can comprise first actuator rod 226, and it is coupled to the first rotary diaphragm plate 224 at first end 228, and is coupled to second valve plug 206 at second end 230.In some instances, first actuator rod 226 can comprise spline, projection, tooth or surface structure 232 and 234, and it couples respectively or cooperates the first rotary diaphragm plate 224 and second valve plug 206.

Second actuator 222 can comprise second rotatable or rotary piston, diaphragm plate or the blade 236; Second chamber 218 is divided into the chamber for it or the chamber is (not shown; But the 302-308 similar in appearance to the chamber), it holds barrier film, air bag or actuating component (not shown, but similar in appearance to barrier film 310-316).Second actuator 222 can comprise second actuator rod 238, and it is coupled to the second rotary diaphragm plate 236 at first end 240, and is coupled to first valve plug 204 at second end 242.In some instances, second actuator rod 238 can comprise spline or

surface structure

244 and 246, and it couples respectively or cooperates the second rotary diaphragm plate 236 and first valve plug 204.

Yoke 214 and 215 limits eyelet or opening 248 and 250, so that can approaching and adjusting packing nut 252 and 254.Packing nut 252 can engage (for example, directly engage or operationally engage) valve packing 256, and it is positioned between the bonnet 258 and second actuator rod 238 of valve 202.Packing nut 254 can engage (for example, directly engage or operationally engage) valve packing 260, and it is positioned between first and second actuator rod 226 and 238.Second actuator rod 238 can be around at least a portion of first actuator rod 226.

Be in operation, control independently moving of

rotary diaphragm plate

224 and 236 via the pressure reduction between the chamber (for example, chamber 302-308) of the vicinity of each rotary diaphragm plate 224 and 236.More specifically, control moving of the first rotary diaphragm plate 224 through making fluid (for example, air, hydraulic fluid) inflow and the 302-308 of delivery chamber and/or barrier film 310-316, and control moving of second valve plug 206 thus.Similarly, through making moving of fluid (for example, air, hydraulic fluid) inflow and delivery chamber and/or barrier film (not shown, but be similar to chamber 302-308 and barrier film 308-316) the control second rotary diaphragm plate 236, and control moving of first valve plug 204 thus.

Fig. 3 shows the sectional drawing of first chamber 216 and first actuator 220.As shown in the figure, the separator 318 and the first rotary diaphragm plate 224 are divided into chamber 302-308 with first chamber 216, and barrier film 310-316 separately is positioned among the 302-308 of chamber.

Fig. 4 shows first chamber 216 that barrier film 310-316 is removed and the sectional drawing of first actuator 220.As shown in the figure, main body 212 can limit a plurality of eyelets or port 402-408, so that control signal can by barrier film 310-316 reception and/or so that the part of chamber 302-308 can be in for example atmospheric pressure.Though do not illustrate, each among the 302-308 of chamber can comprise one or more ports and/or portal.

Fig. 5 shows the sectional drawing of the part of example actuator 200.As shown in the figure, second chamber 218 can limit a plurality of eyelets and/or

port

502 and 504, so that control signal can (for example, 310-316) be received and/or (for example, 302-308) part can be in for example atmospheric pressure so that the chamber by barrier film.Though do not illustrate, each chamber in second chamber 218 can comprise one or more ports and/or portal.

Fig. 6 shows the stereogram of the example actuator 200 that comprises eyelet or port 402,404,502 and 504.As shown in the figure, main body 212 limits eyelets 602,604 and 606, so that

actuator rod

226 and 238 puts in

chamber

216 and 218 and extend valve 202.

Fig. 7 shows the example actuator 700 that is coupled to exemplary four-way valve 702.Example actuator 700 can be rotary and linear actuators.Except moving first and

second valve plugs

204 and 206 with respect to

seating plane

208 and 210 independently, example actuator 700 can also move the 3rd valve plug 704 with respect to the 3rd hole or seating plane 706 independently.Valve

plug

204 and 206 can be rotary valve plug, and valve plug 704 can be linear valve plug.Actuator 700 comprises main body 707, it comprise the yoke 214 that is coupled to valve 702, be coupled in second yoke 215 between first and second chambeies 216 and be coupled in second chamber 218 and the 3rd chamber 710 between the 3rd yoke 708.First and

second actuators

220 and 222 can be positioned in first and

second chambeies

216 and 218, and combine Fig. 2 to move as described above, and the 3rd piston assembly 712 can be positioned in the 3rd chamber 710.

The 3rd piston assembly 712 can comprise linearity or sliding bar piston 714, and it limits groove 716, and groove 716 holds Sealing and/or O-encircles 718 with sealing and/or the slip joint of realization with the internal surface 720 in the 3rd chamber 710.The 3rd piston assembly 712 also comprises the 3rd actuator rod 722, and it is coupled to piston 714 at first end 724, and is coupled to the 3rd valve plug 704 at second end 726.

Yoke 214,215 and 708 limits eyelet or opening 248,250 and 728, so that can approaching and adjusting packing nut 252,254 and 730.Packing nut 252 can engage (for example, directly engage or operationally engage) valve packing 256, and it is positioned between second actuator rod 734 of bonnet 732 and second actuator 222 of valve 702.Packing nut 254 can engage (for example, directly engage or operationally engage) valve packing 260, and it is positioned between first actuator rod 736 and second actuator rod 734.Packing nut 730 can engage (for example, directly engage or operationally engage) valve packing 740, and it is between first actuator rod 736 and the 3rd actuator rod 722.Second actuator rod 734 can center at least a portion of the first and the

3rd actuator rod

736 and 722, and first actuator rod 736 can be positioned between the second and the

3rd actuator rod

734 and 722.

Fig. 8 shows the sectional drawing of actuator 700.As shown in the figure, the 3rd chamber 710 limits

port

802 and 804, and fluid (for example, air, hydraulic fluid) flows through

port

802 and 804 to create the pressure reduction on the linear piston 714.More specifically, flow into and

outflow port

802 and 804, come moving of control piston 714, and therefore control moving of the 3rd valve plug 704 through making streaming flow (for example, air, hydraulic fluid).

Fig. 9 shows the stereogram of the example actuator 700 that comprises eyelet or port 402,404,502 and 504.As shown in the figure, main body 707 limits eyelet 602,604,606 and 902, so that actuator rod 722,734 and 736 stretches into chamber 216,218 and 710 separately, and extends to valve 202.

Though described some illustrative methods, device and product herein, the coverage area of this patent is not limited thereto.On the contrary, this patent is contained all on literal or under doctrine of equivalents, drop on method, device and the product in the scope of accompanying claims in fact.

Claims

1. An actuator for a valve comprising a first valve plug, a second valve plug and a bonnet, comprising:

First cavity, including:

A first rotary actuator assembly including:

at least one first rotating diaphragm plate;

dividers; and

a first actuator rod coupled at a first end to the at least one first rotary diaphragm plate and at a second end to the second valve plug;

Second cavity, including:

A second rotary actuator assembly including:

at least one second rotating diaphragm plate;

dividers; and

a second actuator rod coupled at a first end to the at least one second rotary diaphragm plate and at a second end to the first valve plug;

a body including a first yoke coupled to the valve and a second yoke coupled between the first and second cavities of the body and defining an aperture such that the first and a second actuator rod extending into said first and second chambers and to said valve;

wherein said at least one first and second rotating diaphragm plates divide their respective first and second chambers into a plurality of chambers, each chamber containing a diaphragm, air bag or actuator member.

2. The actuator of claim 1, wherein an edge or portion of said at least one first and second rotary diaphragm plates slidingly and/or sealingly engages a corresponding said The inner surfaces of the first cavity and the second cavity.

3. The actuator of claim 1, wherein the first actuator rod includes splines, protrusions, teeth, or surface structures that couple or engage the at least one first rotary actuator, respectively. diaphragm plate and said second valve plug, and wherein said second actuator stem includes splines, protrusions, teeth or surface features that couple or engage said at least one second rotating diaphragm plate and said second valve plug, respectively. Describe the first valve plug.

4. Actuator according to claim 1, characterized in that the cavities are formed cylindrically with similar or different diameters and/or similar or different heights.

5. The actuator of claim 1 , further comprising an adjustable valve packing disposed between the bonnet of the valve and the second actuator stem and and/or between said first and second actuator rods.

6. The actuator of claim 1, wherein the second actuator rod surrounds at least a portion of the first actuator rod.

7. The actuator of claim 1, further comprising a packing nut engaging said valve cap disposed between said valve cap and said second actuator stem. The valve packing, and another packing nut engaging the valve packing disposed between the first and second actuator rods.

8. The actuator of claim 1, wherein the yoke defines an aperture or opening to enable access and adjustment of the packing nut.

9. The actuator of claim 1, wherein the body defines a plurality of apertures or ports to enable control signals to be received by the diaphragm and/or to enable portions of the chamber to be at atmospheric pressure powerful.

10. The actuator of claim 1, wherein the second chamber defines a plurality of apertures and/or ports to enable control signals to be received by the diaphragm and/or to enable portions of the chamber to At atmospheric pressure.

11. The actuator of claim 1, wherein each chamber includes one or more ports and/or exit holes.

12. An actuator according to any one of the preceding claims, wherein the valve further comprises a third valve plug, and the actuator further comprises a third chamber, the third piston assembly being housed In said third chamber, wherein said third piston assembly comprises a linear or sliding rod piston and a third actuator rod coupled to said piston at a first end and coupled at a second end to the third valve plug, and the third chamber is coupled to the first chamber via a third yoke, and the body defines an aperture such that the three actuator rods protrude into the third cavity and extends to the valve.

13. The actuator of claim 12, wherein the linear or sliding rod piston defines a groove that accommodates a seal and/or an O-ring to achieve a seal with the inner surface of the third chamber and/or slip joints.

14. The actuator of claim 12, further comprising a valve packing between the first actuator stem and the third actuator stem, and comprising engaging the valve Packed packing nut.

15. The actuator of claim 12, wherein the third yoke defines an aperture or opening to enable access and adjustment between the first actuator rod and the third actuator rod. the packing nut between the rods.

16. The actuator of claim 12, wherein said second actuator rod surrounds at least a portion of said first and third actuator rods, and said first actuator rod is positioned between the second and third actuator rods.

17. The actuator of claim 12, wherein the third chamber defines a port through which fluid flows to create a pressure differential across the piston.