CN102691815B - For improving the diaphragm interface of the cycle life of barrier film - Google Patents

Abstract

Describe the diaphragm interface of cycle life for improving barrier film.Example fluid regulator includes the fluid flowing passage between entrance and outlet, and wherein sensing chamber defines a part for described fluid flowing passage.Barrier film senses the pressure in described sensing chamber, and the diaphragm interface being adjacent to described sensing chamber has flexure plane, a part for the described barrier film of movement for contact response pressure change in described sensing chamber.At described fluid conditioner run duration, the impact of described flexure plane is delivered to the amount of the stress of the described part of described barrier film.

Description

For improving the diaphragm interface of the cycle life of barrier film

Cross-Reference to Related Applications

This patent was 12/496,868 as U.S. Patent Application No., on July 2nd, 2009 Submit to, the part continuation application of the U.S. Patent application of entitled " balance valve core ", will at this It is incorporated by reference.

Technical field

This patent generally relates to fluid conditioner, more particularly, to being used for improving barrier film The diaphragm interface of cycle life.

Background technology

Fluid conditioner is commonly distributed throughout in Process Control System, in order to control various fluid Pressure (such as, liquid, gas, etc.).Fluid conditioner is generally used for the pressure of fluid It is adjusted to by force virtually constant value.Specifically, fluid conditioner has generally to receive and is in phase High Voltage is supplied the entrance of fluid, and provides relatively low and substantially permanent in exit Fixed pressure.In order to regulate downstream pressure, fluid conditioner generally includes sensing element or barrier film, Back pressure with sensing with downstream pressure fluid communication.The elastic diaphragm ratio of performance to price is high, and And it is generally used for low pressure applications or non-aggressive process fluid.For high-purity applications, high pressure should With or highly corrosive process fluid, fluid conditioner generally uses metal diaphragm (such as, stainless Steel barrier film).

In order to metal diaphragm is couple to fluid conditioner, traditional fluid conditioner is by metal The peripheral edge of barrier film is clipped between actuator valve body and valve gap.This clamping connect will deformation with And stress is confined on metal diaphragm.Additionally, support to provide to metal diaphragm, fluid is adjusted Joint device generally uses pad, and it has the most flat or smooth contact of jointing metal barrier film Face.But, some metal diaphragms include that convolution or wave-like profile are to increase macrocnemic sensitivity. The pad joint with substantially planar contact surface has the convolution with relatively small contact surface Barrier film, thus increase the stress on metal diaphragm at contact area and concentrate.This transmission (impart) topical application to barrier film concentrates the circulation longevity that can significantly decrease metal diaphragm Life or fatigue life, thus cause maintenance and the expense increased.

Summary of the invention

In one example, fluid conditioner includes the fluid stream between entrance and outlet Dynamic passage, wherein sensing chamber defines a part for described fluid flowing passage.Barrier film senses institute State the pressure in sensing chamber, and the diaphragm interface being adjacent to described sensing chamber have flexure plane, For contact response pressure change in described sensing chamber and one of the described barrier film of movement Point.At described fluid conditioner run duration, the impact of described flexure plane is delivered to described barrier film The amount of the stress of described part.

In another example, fluid conditioner includes diaphragm support, and it is arranged at valve gap and valve Between body, for supporting the moveable part of the barrier film of fluid conditioner.Diaphragm support have with The flexure plane that the flexure plane in the face of the described moveable part of described barrier film is substantially complementary, with Run duration increases the contact surface between described diaphragm support and the moveable part of described barrier film Area.

Accompanying drawing explanation

Figure 1A shows fluid conditioner known to one；

Figure 1B shows the zoomed-in view of a part for the known fluid conditioner of Figure 1A；

Fig. 2 A shows the example fluid regulator with metal diaphragm described herein, It is shown in closed position；

Fig. 2 B shows the example fluid regulator of Fig. 2 A in an open position；

Fig. 3 A is the zoomed-in view of a part for the example fluid regulator of Fig. 2 A and 2B；

Fig. 3 B is another of a part for the example fluid regulator of Fig. 2 A, 2B and 3A Zoomed-in view；

Fig. 4 show the example fluid regulator of Fig. 2 A, 2B, 3A and 3B at this Described example retainer；

Fig. 5 A show the example fluid regulator of Fig. 2 A, 2B, 3A and 3B at this Described exemplary septum plate；

Fig. 5 B is the profile of the diaphragm plate of Fig. 5 A.

Detailed description of the invention

Example fluid regulator described herein substantially improves sensing element or barrier film Cycle life or fatigue life.More specifically, example fluid regulator described herein includes One or more diaphragm interface or diaphragm support, to reduce at described fluid conditioner run duration Local deformation or stress in the part of the barrier film of mobile (such as, flexure or complete song) are concentrated.

Example fluid regulator described herein includes the sensing chamber adjacent to fluid conditioner Diaphragm interface.Diaphragm interface has flexure plane, becomes with contact response pressure in sensing chamber Change and a part for the barrier film of movement.At run duration, what flexure plane impact was delivered to barrier film can The amount of the stress of movable part.Especially, flexure plane described herein joint is this has increase The moveable membrane portions of contact surface area, stress to be dispersed in the major part of barrier film On, thus the stress reducing the local on run duration, the part of the barrier film of movement is concentrated.

In some examples described herein, the flexure plane of diaphragm interface includes face or composition surface, This face or composition surface have the wheel of a part for the barrier film engaged with at run duration diaphragm interface Wide complementary crooked outline.Such as, the diaphragm interface of fluid conditioner described herein includes propping up Support or contact surface, this support or contact surface have the cross sectional shape with barrier film or profile substantially phase As cross sectional shape or profile, substantially to increase the contact surface face between diaphragm interface and barrier film Long-pending.In other words, contact surface is configured or molding is to connect with interface membrane when diaphragm flexes or flexure During mouth, the most matingly interface membrane.Therefore, by the stress being delivered on barrier film is divided It is scattered to larger area or the part of barrier film, increases between diaphragm interface and the barrier film of fluid conditioner Contact surface area decrease stress concentrate.Thus significantly reduce the local of barrier film stress or Fatigue deformation.Therefore, diaphragm interface substantially improves cycle life or the fatigue life of barrier film.

Before example fluid regulator described herein is discussed, carry in Figure 1A with 1B Supply the brief description of a kind of known fluid conditioner 100.With reference to Figure 1A and 1B, example Property fluid conditioner 100 includes valve body 102, and it is threadably couple to valve gap 104, this valve gap 104 define the fluid passage between entrance 106 and outlet 108.Load component 110 is set Put in valve gap 104, and adjustable ground provides load to barrier film 112, wherein loads correspondence In desired fluid outlet pressure.The peripheral edge 114 of barrier film 112 is sandwiched in or is placed on Between valve gap 104 and valve body 102, so that the first side 116 of barrier film 112 and valve body 102 Limiting sensing chamber 118, this sensing chamber 118 is via passage 120 and outlet 108 fluid communication. Additionally, support to provide to barrier film 112, fluid conditioner 100 includes pad 122, its There is the most flat or smooth contact surface 124, this contact surface 124 interface membrane 112 A part for second side 126.Barrier film 112 is metal diaphragm, and it has multiple wave-like profile Or convolution 128, to increase the sensitivity of barrier film 112.Bracket 130 moves relative to valve seat 134 Dynamic, with the flowing of the fluid between regulation or throttling entrance 106 and outlet 108.Biasing element 136 towards valve seat 134 offset bracket 130.Bracket 130 also includes that valve rod 138 is with interface membrane 112 with pad 122.

It is in operation, when exporting first side 116 to barrier film 112 of the fluid pressure at 108 When the power of the second side 126 being more than or equal to be supplied to barrier film 112 by load component 110 is provided, Barrier film 112 moves away from valve rod 138 with pad 122.Therefore, bracket 130 sealingly engages Valve seat 134 is to limit the fluid flowing between entrance 106 and outlet 108.When exporting at 108 Fluid pressure be lowered so that the power of the first side 116 being supplied to barrier film 112 is less than by loading When assembly 110 is supplied to the power of the second side 126 of barrier film 112, barrier film 112 is towards valve body 102 Bending or bend and engage carrier bar 138, this makes bracket 130 move away from valve seat 134, Thus allow the fluid flowing between entrance 106 and outlet 108.Pressure fluid is at entrance 106 And flowing between outlet 108, until the dynamic balance on the both sides 116 and 126 of barrier film 112.

Clearly illustrating as in Figure 1B, the peripheral edge 114 of barrier film 112 is at folder point Or be sandwiched at folder face 140 between valve gap 104 and valve body 102.This clamping connection is unfavorable , because when barrier film 112 is in run duration flexure or bending, this clamping is connected to next-door neighbour Create relatively high stress at the region of folder point 140 or point 142 to concentrate.In other words, at it Concentrated when being affected by relatively high stress, the region 142 of barrier film 112 bends or bends (that is, moving at run duration), this may make region 142 in run duration fracture or tired Labor.Therefore, high concentration or the stress of local can reduce or limit the circulation of barrier film 112 Life-span or fatigue life.

Additionally, although not shown, in some known example, when the relative valve of dividing plate 112 When seat 134 moves, the waveform of smooth contact surface 124 interface membrane 112 of pad 122 Profile 128.Particularly because the contact surface 124 of pad 122 is substantially planar, so connecing Contacting surface 124 is via peak 144 interface membrane 112 of the wave-like profile 128 of barrier film 112. Therefore, pad 122 engages the peak of wave-like profile 128 with relatively small contact surface area. Therefore, pad 122 is so that increase or local stress is concentrated and transmitted via peak 144 To barrier film 112.As above-mentioned, the stress of this local enables to barrier film 112 and ruptures or tired Labor, thus reduce cycle life or the fatigue life of barrier film 112, and increase maintenance cost.

Fig. 2 A and 2B shows example fluid regulator 200 described herein.Fig. 2 A Show the example fluid regulator 200 of in the closed position 202, and Fig. 2 B shows The example fluid regulator 200 of in an open position 204.

With reference to Fig. 2 A and 2B, example fluid regulator 200 includes regulator body, its Including coupling (such as, threadably coupling) to lower body part or the top body of valve body 208 Divide or valve gap 206.Valve body 208 is formed at entrance 210 and the outlet 212 of fluid conditioner 200 Between fluid flow path.Barrier film 214 is arranged between valve body 208 and valve gap 206, So that the first side 216 of barrier film 214 limits with valve gap 206 and is used for accommodating load component 220 Load cell 218.Second side 222 of barrier film 214 limits with the inner surface 224 of valve body 208 Sensing chamber 226.Sensing chamber 226 is fluidly coupled to export 212 via passage 228, and The pressure of the fluid at sensing outlet 212.In the example illustrated, barrier film 214 is by such as The metal diaphragm that rustless steel is made.

Load component 220 is operably coupled to barrier film 214 via diaphragm plate or pad 230, And provide reference load or load (such as, pre set force) to barrier film 214.In this example, Load component 220 includes the biasing element 232 (such as, spring) being arranged in load cell 218, It provides load via pad 230 to barrier film 214.(such as, spring-loaded governor 234 regulates Increasing or reduce) biasing element 232 is applied to the pre set force on the first side 216 of barrier film 214 Or the amount of load.As it can be seen, spring-loaded governor 234 includes control handle (control knob), It is locked in and is threadably couple to valve gap 206 and engages the screw of adjustable spring base 238 236.Control knob with first direction (such as, clockwise) or second direction (such as, The decrement rotating change biasing element 232 counterclockwise) (such as, is compressed or reduces pressure Biasing element 232), and thus change be applied on the first side 216 of barrier film 214 negative The amount carried.

Valve gear or core assembly 240 are arranged in the vestibule 242 of valve body 208, this hole Chamber 242 limits the inlet 244 being fluidly coupled to entrance 210.Valve gear 240 includes torr Frame 246, when fluid conditioner 200 in the closed position 202, this bracket 246 is towards valve seat 248 move the fluid flowing being limited between entrance 210 and outlet 212.Work as fluid regulation During device 200 in an open position 204, bracket 246 moves to allow entering away from valve seat 248 Fluid flowing between mouth 210 and outlet 212.Biasing element 250 is towards valve seat 248 biasing torr Frame 246.Sealing member 252 (such as, O) is arranged on the valve of fluid conditioner 200 Between body 208 and valve gear 240, to provide close between sensing chamber 226 and inlet 244 Envelope.

Being in operation, example fluid regulator 200 is fluidly coupled to via entrance 210, Such as, it is provided that the upstream pressure source of relatively high pressure fluid (such as, gas), and warp It is fluidly coupled to by outlet 212, such as, the upstream device of low pressure or system.Fluid is adjusted The back pressure flowing through the fluid of fluid conditioner 200 is adjusted to and by scalable by joint device 200 The corresponding desired pressure of default load that load component 220 provides.

In order to reach desired back pressure, rotary control knob is (such as, with clockwise Or counterclockwise) it is applied to the first of barrier film 214 by biasing element 232 to be increased or decreased Load on side 216.The load provided by biasing element 232 is adjusted to corresponding to desired Back pressure.According to the reference pressure set, sensing chamber 22 senses via passage 228 The pressure of the pressure fluid at mouth 212, this makes barrier film 214 in response in sensing chamber 226 Pressure change and move.

Such as, when fluid flowing between entrance 210 and outlet 212, export at 212 Fluid pressure increase.When the pressure of the pressure fluid in sensing chamber 226 increases, fluid Pressure on the second side 222 of barrier film 214, apply power, so that barrier film 214 and biasing unit Part 232 moves with the linear movement away from valve body 208.Then, the biasing unit of valve gear 240 Part 250 makes bracket 246 move towards valve seat 248, to be limited in entrance 210 and outlet 212 Between fluid flowing.The pressure of the fluid in sensing chamber 226 is in the second side 222 of barrier film 214 The power of upper applying is applied to the reference on the first side 216 of barrier film 214 more than load component 220 Pressure or power, this makes pad 230 move away from valve body 208, thus allows bracket 246 close Feud engages valve seat 248 so that stream by fluid conditioner 200 is restricted or prevented as shown in Figure 2 Body flows.

When the pressure of the pressure fluid in sensing chamber 226 is less than being applied to by biasing element 232 When reference pressure on the first side 216 of barrier film 214 or power, barrier film 214 moves towards valve body 208 Move, bend or bend.Then, pad 230 engages the bar part 254 of bracket 246, with far From valve seat 248 movable support bracket 246, thus allow or increase between entrance 210 and outlet 212 Fluid flowing.(that is, the sensing chamber 226 when the pressure reduction on barrier film 214 is substantially close to zero In the pressure of fluid be adjusted to generate the load being substantially equal to be provided by load component 220 The pressure of power), bracket 246 towards valve seat 248 move to prevent or be limited in entrance 210 with Fluid flowing between outlet 212.

At the run duration as shown in Fig. 2 A Yu 2B, barrier film 214 in fig. 2 shown in Bracket 246 is shifted to the primary importance of closed position 202 with shown in Fig. 2 B by bracket 246 Shift to move, bend or bend between the second position of open position 204.

Fig. 3 A and 3B shows the amplifier section of the fluid conditioner 200 of Fig. 2 A Yu 2B. As most clearly shown in Fig. 3 A Yu 3B, the barrier film 214 of shown example includes Peripheral edge 302, middle body 304, between peripheral edge 302 and middle body 304 Middle, removable or elastic part 306.In peripheral edge 302 and middle body 304 Each has substantially planar or flat surface.Mid portion 306 has outside multiple waveform Shape or convolution 308, when barrier film 214 is in first and second position as shown in Fig. 2 A Yu 2B Between when moving, multiple wave-like profile or convolution 308 can bend or bend.Especially, in Between part 306 profile 308 in each include projection or flexure plane 310 and recessed Fall into part or flexure plane 312, which constitute continuous print smooth curve or wave-like profile or convolution 308.Each in projection 310 and/or female 312 can have substantially phase As radius of curvature maybe can have the radius of curvature of change.Such as, the first of profile 308a Projection 310a and/or female 312a can have a first curvature radius, and profile The second projection 310b of 308b and/or female 312b can have and is different from first The second curvature radius of radius of curvature.Profile 308 significantly increases the sensitivity of barrier film 214, So that fluid conditioner 200 can have more close out-to-out (dimensional envelope).Barrier film 214 is made up of the most stainless metal material.

In order to the stress reduced on the mid portion 306 of barrier film 214 is concentrated, fluid regulation Device 200 include one or more diaphragm interface adjacent with sensing chamber 226 or supporting surface 314, 316 and/or 318.Each in diaphragm interface 314,316 and/or 318 adds barrier film The cycle life of 214 or fatigue life.Especially, diaphragm interface 314,316 and/or 318 In each essentially add the contact surface area when engaging with barrier film 214, thus subtract Stress on little run duration barrier film 214 is concentrated.In some instances, fluid conditioner is only Use in diaphragm interface 314,316 or 318.However, it is possible to use interface 314, The combination in any of 316 and 318.

In the example illustrated, diaphragm interface 314 is integrally formed as list with valve body 208 Formula part or unitary construction.As it can be seen, valve body 208 has annular wall 320, its with interior table Diaphragm interface 314 is limited at the top edge of the annular wall 320 that face 224 is adjacent or part 322. The diaphragm interface 314 of valve body 208 includes annular seating or diaphragm support 324, to keep, to accommodate Or the peripheral edge 324 of interface membrane 214.Annular seating 324 include bending, oblique or The surface 326 tilted, it includes the circle adjacent with diaphragm support 324 or radioactive limit Edge 326a, for being supported on the barrier film that fluid conditioner 200 run duration moves or bends The mid portion 306 of 214 and/or a part for peripheral edge 302.

Diaphragm support 324 has substantially planar or flat surface, to accommodate or interface membrane The peripheral edge 302 of 214.As it can be seen, diaphragm support 324 is substantially perpendicular to inner surface 224.Sloping portion 326 is arranged on diaphragm support 324 with interior with radioactive edge 326a Between surface 224.Sloping portion 326 can include the flexure plane with identical radius of curvature, Or have change radius of curvature, formed continuous tilt part multiple flexure planes.When every When film 214 is coupled to fluid conditioner 200, sloping portion 326 and/or diaphragm support 324 Metal to metal seal substantially closely is provided.In some instances, for the ease of metal pair Metal sealing, the shoulder of the diaphragm support 324 adjacent with the scalariform annular wall 327 of valve body 208 325 are biased (such as, 0.015 inch of biasing) (such as, at figure by opposed beveled portion 326 Less than sloping portion 326 in the orientation of 3A).By this way, it is couple to when valve gap 206 During valve body 208, the torque being applied on the sloping portion 326 of valve body 208 makes inclined plane 236 At least some of deformation or smooth, thus provide metal to metal seal substantially closely. Valve body 208 can be made up of the material softer than the material of barrier film 214.

Being in operation, sloping portion 326 makes the barrier film 214 adjacent with peripheral edge 302 A part can bend along sloping portion 326 or crimp.Such as, when barrier film 214 with The mid portion 306 that peripheral edge 302 is adjacent moves towards valve body 298 or bends to the second position Time (such as, the position of Fig. 2 B), the mid portion 306 adjacent with peripheral edge 302 The sloping portion 326 of the second side 222 engagement valve body 208.Sloping portion 326 add in Between contact surface area between part 306 and valve body 208, thus spread more evenly across or reduce It is delivered in engagement angled part 326 or the region of the barrier film 214 around sloping portion 326 curling Or the stress of the mid portion 306 in part.In other words, tilt or flexure plane 326 make with The mid portion 306 that peripheral edge 302 is adjacent can bend or bend, and is substantially reduced Pressure concentrate impact.

Such as, contrary with the known fluid conditioner 100 of Figure 1A and 1B, valve body 208 Diaphragm interface 314 or sloping portion 326 substantially reduce or eliminate valve body 208 and valve gap Folder point between 206 or folder face (such as, the folder point 140 of Figure 1A Yu 1B).Sloping portion 326 major parts adjacent with peripheral edge 302 making barrier film 214 or region can be with phases Compare the folder in Figure 1B and put 140 less rigidity (rigidity) or rigidity (stiffness) around inclining Tiltedly part 326 crimps or bends, thus by that stress is scattered in barrier film 214 and periphery sides Reduce stress on the bigger contact surface area that edge 302 is adjacent to concentrate.In other words, barrier film 214 To be delivered to the fluid conditioner of Figure 1A Yu 1B with when barrier film 112 is around folder point 140 flexure The compressive stress of the barrier film 112 of 100 is less compared with tensile stress is delivered to the second of barrier film 214 The compressive stress of side 222 and the tensile stress of less the first side 216 being delivered to barrier film 214 around Sloping portion 326 bends.Therefore, sloping portion 326 adds valve body 208 and mid portion Contact surface area between 306, thus decrease barrier film 214 with peripheral edge 302 phase The adjacent stress on mid portion 306 is concentrated.Sloping portion 326 can via machining, Casting or arbitrarily other one or more manufacturing process being suitable for are formed.As it can be seen, in order to Redundant seal is provided when need not metal to metal seal substantially closely and/or is easy to assemble, Diaphragm interface 314 or diaphragm support 324 can include alternatively for accommodating O 330 Recess 328, with between valve body 208 and valve gap 206 provide seal (such as, redundancy is close Envelope).O 330 can so that assemble, this is because compared to provide metal to metal close Torque needed for envelope, O 330 needs the less torque for sealing.

In the example shown, fluid conditioner 200 uses annular holder or keeper 332 Barrier film 214 is kept or is clipped between valve gap 206 and valve body 208.Further, keeper 332 Limit and provide, to the mid portion 306 adjacent with peripheral edge 302, the diaphragm interface 316 supported. Diaphragm interface 316 includes barrier film clamping part 334 and adjacent with this barrier film clamping part 334 Diaphragm support portion 336.

As it can be seen, the barrier film that the peripheral edge 302 of barrier film 214 is sandwiched in valve body 208 props up Between frame 324 and barrier film clamping part 334.Especially, it is couple to valve gap 206 when valve body 208 Time, the barrier film clamping part 334 of keeper 332 transfers load to the outer part of barrier film 214 Divide 302, when applying a torque on valve gap 206 during assembling with valve body 208 at valve gap 206 Time, help to provide metal to metal seal between barrier film 214 and valve body 208.When being couple to During valve body 208, valve gap 206 carries to the peripheral edge 302 of barrier film 214 via keeper 332 For compressive load.In this example, keeper 332 by, such as, the most stainless gold Belong to material make, with keeper 332, valve body 208, valve gap 206 and barrier film 214 it Between provide metal to metal contact.

The diaphragm support portion 336 of diaphragm interface 316 includes bending or arcuate surface 336a, its Deviate from barrier film clamping part 334 to highlight, and inside towards sensing chamber 226 from peripheral edge 302 Prominent.Such as, diaphragm support portion 336 extends beyond or exceedes the annular wall 320 of valve body 208 Inner surface 224 or top edge 322.This extension makes diaphragm support portion 336 to connect Close the first side 216 of the mid portion 306 adjacent with peripheral edge 302, to support barrier film 214. Especially, the profile 308 of the first side 216 of diaphragm support portion 336 interface membrane 214 At least some of the 337 of female 310.Therefore, keeper 332 or diaphragm interface 316 With opposite face or the side 216 that sloping portion 326 or diaphragm interface 314 distinguish interface membrane 214 With 222.Additionally, as it can be seen, in Fig. 3 A Yu 3B, flexure plane 336a has essence On similar in appearance to the shape of mid portion 306 adjacent with peripheral edge 302 or the shape of profile or Profile, so that this flexure plane matingly engages the mid portion adjacent with peripheral edge 302 306。

Fig. 4 shows the cross section of the keeper 332 of Fig. 3 A and 3B.Again referring to Fig. 4, Keeper 332 is the annular holder 402 having external diameter 404 with internal diameter 406.Such as, external diameter 402 can be about 64.5 millimeters, and internal diameter 406 is about 44.5 millimeters.At this example In, barrier film clamping part 334 has length 408, and diaphragm support portion 336 has length 410.Such as, length 408 is about 5.25 millimeters, and length 410 is about 4.75 millimeters. But, other length and/or radius can be used for meeting the needs of application-specific.

Further, in an example shown, the curvature of the flexure plane of diaphragm support portion 336 half Footpath 412 is substantially similar to the radius of curvature of the mid portion 306 adjacent with peripheral edge 302. Therefore, the crooked outline of flexure plane 336a can be complementary to adjacent with peripheral edge 302 in Between the crooked outline of part 306.Such as, the radius 412 of flexure plane is about 8.5 millimeters. But, radius of curvature can be as desired to change with the needs meeting application-specific.

By this way, flexure plane 336a is with the fluid compared to such as Figure 1A and 1B The biggest contact surface area of actuator 100 engages the centre adjacent with peripheral edge 302 Part 306, thus when moving between first and second positions at run duration barrier film 214 Reduce and be adjacent to the concentration of the stress at the mid portion 306 of peripheral edge 302.Such as, phase Than in the fluid conditioner being delivered to Figure 1A and 1B when barrier film 112 is around folder point 140 flexure The compressive stress of the barrier film 112 of 100 and tensile stress, when pressure or power apply via sensing chamber 226 Time on the second side 222 of barrier film 214, keeper 332 significantly decreases barrier film 214 High pressure stress concentration on first side 216 and the Gao Zhangying on the second side 222 of barrier film 214 Power is concentrated.Therefore, diaphragm interface 316 significantly improves the cycle life of barrier film 214 or tired The labor life-span.In other examples, flexure plane 336a can have and the pars intermedia of barrier film 214 The radius of curvature that the radius of curvature of points 306 is different.

Although not shown, but keeper 332 and/or diaphragm interface 316 or diaphragm support portion Divide 336 can be integrally formed as unitary piece or structure with valve gap 206.In other words, barrier film props up Support part divides 336 can extend from the inner surface of valve gap 206, and keeper 332 can be omited Go.

Fig. 5 A and 5B shows the pad 230 of fluid conditioner 200.With reference to Fig. 2 A, 2B, 3A, 5A and 5B, pad 230 includes diaphragm interface or supporting surface 318, for engage or Support barrier film 214.Pad 230 has cylindrical body section 502, and it has for accommodating negative Carry the chamber 504 of the biasing element 232 of assembly 220.As it can be seen, diaphragm interface 318 includes Bent support face or face 506, for increasing the contact surface face between barrier film 214 and pad 230 Long-pending.In the example illustrated, the diaphragm interface 318 of pad 230 includes substantially planar or flat Composition surface 508, for the middle body 304 (Fig. 3 A) of interface membrane 214.

Bent support face or face 506 have the portion of the barrier film 214 being complementary to joint sheet 320 The crooked outline of the profile divided.By this way, bent support face 506 provides relatively large Contact surface area come profile 308 or the mid portion 306 of interface membrane 214.Illustrate In example, bent support face 506 includes the curved of the depression adjacent with protruding sweep 512 Bent portions 510, to provide smooth continuous print waveform bent support face.In other words, bending The cross sectional shape of support section 506 is substantially similar to the cross section shape of the profile 308 of barrier film 214 Shape.Such as, outside the depression sweep 510 in bent support face 506 has with barrier film 214 The radius of curvature that the radius of curvature of the bossing 310 of shape 308 is the most similar.Similarly, The protruding sweep 512 in bent support face 506 has the profile 308 with barrier film 214 The radius of curvature that the radius of curvature of female 312 is the most similar.

Further, the first depression sweep 510a in bent support face 506 can have with curved The song that the radius of curvature of the second depression sweep 510b of bent supporting surface 506 is different or similar Rate radius.Such as, the range of curvature radius of depression sweep 510 is at 6.0 and 8.0 millimeters Between.Similarly, the first convex curved portion 512a in bent support face 506 can have The radius of curvature different or similar from the radius of curvature of the second convex curved portion 512b.Such as, The range of curvature radius of convex curved portion 512 is between 8.0 and 10.0 millimeters.

Therefore, contrary with the pad 122 of Figure 1A, the diaphragm interface 318 of pad 230 is real The mid portion 306 of matingly interface membrane 214 in matter, with at pad 230 and barrier film 214 Between the contact surface area of increase is provided, its impact (or reduction) is delivered in response to sensing chamber Pressure change in 226 and the amount of the stress of the mid portion 306 of the barrier film 214 of movement.? In this example, diaphragm support surface 506 reduces the stress of the local on barrier film 214 and concentrates.Example As, when barrier film 214 moves between the position shown in the position shown in Fig. 2 A and Fig. 2 B, Pad 230 engages (such as, matingly engaging) barrier film 214 with relatively large contact surface area Mid portion 306.Therefore, local stress concentrate reduction significantly improve or add every The cycle life of film 214 or fatigue life.

In other examples, the diaphragm interface 318 of pad 230 includes and the shape of barrier film 214 Shape, profile or the cross section that shape, profile or cross section are different.Such as, the profile 308 of barrier film 214 Can be different from the radius of curvature between bent support face 506, so that barrier film 214 is unpaired Ground joint sheet 230, but the contact surface that the pad relative to Figure 1A Yu 1B increases still is provided Area.

Therefore, fluid conditioner 200 described herein include diaphragm interface 314,316 and/ Or 318, it can be configured with the most similar to the shape of barrier film 214 or profile Shape or profile, to increase between diaphragm interface 314,316 and/or 318 and barrier film 214 Contact surface area.Such as, each in diaphragm interface 314,316 and/or 318 can include Respective flexure plane or part to increase contact surface area when being engaged by barrier film 214, thus The stress of the part that reduction is delivered to the barrier film 214 of movement at run duration is concentrated.In some examples In son, the supporting surface of diaphragm interface 314,316 and/or 318 has and the cross section of barrier film 214 Shape or the most similar cross sectional shape of profile or profile, so that diaphragm interface 314,316 And/or 318 matingly interface membrane 214 at least some of.Therefore, diaphragm interface 314, 316 and/or 318 decrease the stress concentration being delivered to barrier film 214, thus add barrier film 214 Cycle life or fatigue life.Such as, the cycle life of barrier film 214 about 85000 is followed Ring, and the cycle life of the barrier film 112 of Figure 1A Yu 1B is about 10000 circulations.One In a little examples, fluid conditioner 200 can be only with in diaphragm interface 314,316 and/or 318 A realization, or can be real with the combination in any of diaphragm interface 314,316 and/or 318 Existing.

Although have been described with some illustrative methods, equipment and goods, the application at this Coverage be not limited thereto.On the contrary, the application covers from literal or in doctrine of equivalents Under fall completely within all methods, equipment and the goods of scope.

Claims (15)

1. a fluid conditioner, including:

Fluid flowing passage, it is between entrance and outlet；

Sensing chamber, it limits a part for described fluid flowing passage；

Barrier film, it is arranged to sense the pressure in described sensing chamber；And

First diaphragm interface and the second diaphragm interface, it is adjacent to described sensing chamber, and wherein said first Diaphragm interface includes that annular holder, described annular holder include clamping part and support section, described folder Tightly it is partially configured as keeping the peripheral edge of described barrier film, described support section to include the first flexure plane, Wherein said second diaphragm interface includes the diaphragm plate being arranged in load cell relative to described sensing chamber, Described diaphragm plate includes the surface with the second flexure plane,

Wherein said first flexure plane and second flexure plane contact response pressure in described sensing chamber Change and the Part I of the described barrier film of movement and Part II, described first flexure plane and second curved Each of curved surface is respectively provided with the described Part I with described barrier film and the bend wheel of Part II Wide complementary profile, is thus delivered to the institute of described barrier film in the minimizing of described fluid conditioner run duration State the amount of the stress of Part I and Part II.

Fluid conditioner the most according to claim 1, it is characterised in that also include the 3rd every Film interface, described 3rd diaphragm interface includes annular seating, its periphery being arranged to keep described barrier film Edge, and wherein said annular seating includes that the 3rd flexure plane, described 3rd flexure plane include described ring The radiant type inward flange of shape seat, the contact of this radiant type inward flange moves at described fluid conditioner run duration The Part III of dynamic described barrier film.

Fluid conditioner the most according to claim 2, it is characterised in that described annular holder Described first flexure plane protrude inwardly from from the described peripheral edge of described barrier film, and adjust at described fluid Joint device run duration only contacts the side of the described Part I of described barrier film.

Fluid conditioner the most according to claim 2, it is characterised in that adjust at described fluid Joint device run duration, described first flexure plane of described annular holder and the described radiation of described annular seating Formula inward flange contacts the opposite face of described barrier film.

Fluid conditioner the most according to claim 1, it is characterised in that described first bending Face and the second flexure plane increase described first diaphragm interface and the second diaphragm interface and described barrier film respectively Described Part I and Part II between contact surface area.

Fluid conditioner the most according to claim 1, it is characterised in that also include being arranged on Biasing element in the described load cell of described fluid conditioner, described biasing element be configured to via Described diaphragm plate provides offset load to described barrier film.

7. a fluid conditioner, including:

First diaphragm support and the second diaphragm support, it is arranged between valve gap and valve body, is used for supporting The moveable part of barrier film, wherein said first diaphragm support includes that annular retainer, described annular are protected Holder includes barrier film clamping part and is adjacent to the diaphragm support portion of described barrier film clamping part, described Barrier film clamping is partially configured as keeping the peripheral edge of described barrier film, and described diaphragm support portion includes First flexure plane, wherein said second diaphragm support includes the load cell being arranged in described fluid conditioner Interior pad, described pad has the supporting surface including the second flexure plane,

Wherein said first flexure plane and the second flexure plane respectively with the described movable part of described barrier film Point the first flexure plane and the second flexure plane the most complementary, with run duration increase described first every Film supports connecing between each and the described moveable part of described barrier film of the second diaphragm support Contacting surface area.

Fluid conditioner the most according to claim 7, it is characterised in that also include valve body, It has the diaphragm support of the inner surface being adjacent at least partially define sensing chamber, wherein said valve body There is between described diaphragm support and described inner surface angled surface, described angled surface Deviate from the one side of described diaphragm support and described barrier film and extend.

Fluid conditioner the most according to claim 8, it is characterised in that described diaphragm support Part deviate from described barrier film clamping part with described of described barrier film and extend.

Fluid conditioner the most according to claim 9, it is characterised in that when described valve body coupling When receiving described valve gap, described annular retainer transfers load to the described peripheral edge of described barrier film.

11. fluid conditioners according to claim 7, it is characterised in that the institute of described pad State supporting surface and engage the one side of described barrier film.

12. fluid conditioners according to claim 7, it is characterised in that the institute of described pad State supporting surface include the middle body with substantially planar supporting surface and be adjacent to described central authorities The outside of part, described outside has corrugated profile.

13. fluid conditioners according to claim 12, it is characterised in that described barrier film sets Being placed between described valve body and described valve gap, described barrier film has middle body, peripheral edge and sets Be placed in the mid portion between described middle body and described peripheral edge, wherein said peripheral edge with Each in described middle body includes substantially planar surface, and wherein said mid portion Including multiple corrugated profiles, for increasing the sensitivity of described barrier film.

14. fluid conditioners according to claim 13, it is characterised in that described pad Described middle body is configured to engage the described middle body of described barrier film, and the of described pad Two flexure planes are arranged to engage the described mid portion being adjacent to described middle body of described barrier film Substantially complementary wave-like profile.

15. fluid conditioners according to claim 13, it is characterised in that described pad The wave-like profile of the described supporting surface of bending includes the wave of the described mid portion with described barrier film The radius of curvature that the radius of curvature of shape profile is the most similar.