CN204267818U - Balance pressure intensity regulator and the equilibrium valve plug assembly for balance pressure intensity regulator - Google Patents
Balance pressure intensity regulator and the equilibrium valve plug assembly for balance pressure intensity regulator Download PDFInfo
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- CN204267818U CN204267818U CN201420075971.8U CN201420075971U CN204267818U CN 204267818 U CN204267818 U CN 204267818U CN 201420075971 U CN201420075971 U CN 201420075971U CN 204267818 U CN204267818 U CN 204267818U
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Abstract
A kind of balance pressure intensity regulator and the equilibrium valve plug assembly for balance pressure intensity regulator.This balance pressure intensity regulator comprises valve body, and valve body has the fluid input and fluid output that are connected by fluid passage.Valve seat is arranged in described fluid passage.Equilibrium valve plug assembly is arranged in described fluid passage, described equilibrium valve plug assembly comprise to coordinate with described valve seat optionally open or closed described fluid passage valve plug, described valve plug is operably connected to valve rod retainer, by cavity and the separated barrier film of described fluid passage, described fluid passage fluid be connected to the intermediate equilibria passage of described cavity and described fluid passage fluid be connected to the peripheral balance passage of described cavity, described peripheral balance passage is between described retainer and described valve plug.
Description
Technical field
The disclosure relates generally to balance pressure intensity regulator, more specifically, relates to a kind of balance pressure intensity regulator with the balanced trim comprising variable pressure induction region.
Background technique
Pressure modulating valve is used to multiple industry and house application, to control the downstream pressure of fluid.Such as, in chemical processing plant (CPP) or oil refinery, pressure modulating valve is used to the fluid of operation flowing to compensate increase or the minimizing of demand, or compensates other load disturbances, makes this fluid pressure be conditioned like this.Equally, pressure modulating valve can be used to plumbing, and to maintain predetermined fluid pressure, the change according to demand of this fluid pressure regulates automatically, such as, anti-scald valve in shower head or water tap.By controlling downstream pressure, pressure modulating valve compensates the change of downstream demand.Such as, when downstream increase in demand, pressure modulating valve is opened to allow more fluid to flow through this pressure modulating valve, therefore maintains the downstream pressure of a relative constancy.On the other hand, when downstream demand reduces, pressure modulating valve cuts out to reduce the amount flowing through the fluid of this pressure modulating valve, again maintains the downstream pressure of a relative constancy.
Pressure modulating valve can be classified as balance type or unbalanced type.Non-equilibrium valve typically has the inlet fluid of High Voltage in the side of valve plug, and has the outlet fluid of low pressure in another example of this valve plug.Non-equilibrium valve is subject to a kind of impact being called as the ill effect of attenuating inlet characteristic.This attenuating inlet characteristic is a kind of phenomenon, and wherein when upstream pressure reduces, non-equilibrium valve experienced by the increase of a kind of and less desirable downstream pressure.Because most pressure modulating valve is attempted to maintain constant downstream pressure, therefore this impact is undesirable.Attenuating inlet characteristic is caused by the hydrodynamic pressure of the High Voltage side of this valve plug, and this hydrodynamic pressure attempts this valve plug mobile to closed position.Therefore, this valve must have certain mechanism to resist this hydrodynamic pressure on this valve plug.Because the mechanism resisting this hydrodynamic pressure typically has a set point, although the hydrodynamic pressure on the inlet side of this valve plug may change (such as, because the supply of inlet fluid reduces, or due to the pressure change of valve upstream), the pressure produced by this mechanism is constant.The application of attenuating inlet characteristic to Limited compression fluid source is even more important, such as gas cylinder, long-tube trailer or preventer (hydril), because in such applications, there is the inlet fluid supply that is fixing, and therefore this inlet fluid pressure reduction when the supply of this inlet fluid reduces.
Non-equilibrium valve is also subject to the impact on the infringement that valve seat produces.In the non-equilibrium valve with high inlet pressure, the fluid pressure acted on large valve opening can damage this valve seat by pressure.Therefore, non-equilibrium valve is undesirable for the application of High Voltage, macropore.
In order to process this attenuating inlet characteristic in higher flow applications, balance pressure intensity regulator is developed.In balance pressure intensity regulator, a part for upstream pressure is transferred the downstream part acting on valve plug.Like this, this valve plug " is balanced ", and identical fluid pressure acts on the upstream and downstream part of this valve plug.By this way, this attenuating inlet characteristic is eliminated (or greatly reducing), because the fluid pressure acted in the valve plug surface of the upstream and downstream of this valve seat does not have difference, this difference can force this valve plug towards closed position.In other words, this valve plug self is very little or do not produce the pressure of opening/closing because fluid pressure creates.
In diaphragm type pressure regulator, similar with balance regulator recited above, from the upstream of valve plug or the High Voltage fluid of inlet side by this valve plug by the opposite side of this barrier film of releasing to balance the pressure on this valve plug.Typically, the balance of this hydrodynamic pressure is by realizing in conjunction with one or more vent pathway or port, and this vent pathway or port extend to the actuator side of this barrier film from inlet side by this valve plug.
Fig. 1 shows a typical edge induction diaphragm type pressure regulator.Pressure regulator 10 comprises valve body 20, and this valve body is with the fluid input 22 fluidly connected by passage 26 and fluid output 24.Passage 26 comprises neck 28, and valve seat 30 is placed in this neck.Bonnet 32 is equipped with spring loaded 34, and spring loaded 34 is connected to valve rod 36.Valve rod 36 is operably connected to valve plug 38.Valve plug 38 and valve seat 30 interact, and flow through valve body 20 to outlet 24 to control fluid from entrance 22.
Barrier film 39 is connected to bonnet 32 and valve plug 38.Passage 26 and the chamber 40 held in the bonnet 32 of spring loaded 34 are separated by barrier film 39.Barrier film 39 is in response to the pressure difference between passage 26 and chamber 40.
Retainer 42 is connected to valve rod 36, and is remained on valve rod 36 by valve plug 38.This retainer can comprise the one or more fastening pieces 44 be connected on valve rod 36.One or more balance channel or path 46 be connecting passage 26 and the cavity 48 that is placed between valve plug 38 and chamber 40 fluidly.Hydrodynamic pressure on valve plug 38 is balanced by the fluid flowing through balance channel 46.In edge induction diaphragm type pressure regulator 10 in FIG, balance channel 46 is arranged radially outwardly from the center of retainer 42.This balance channel 46 can be the path of a series of dispersion or single annular channels.This edge induction diaphragm type regulator bears high pressure-charging (boost) under high inlet pressure, and this causes the undesirable minimizing in high inlet pressure down-off.
Typical middle induction diaphragm type pressure regulator has been shown in Fig. 2.This pressure regulator 110 comprises valve body 120, and this valve body 120 has the fluid input 122 and fluid output 124 that are fluidly connected by passage 126.Passage 126 comprises neck 128, and valve seat 130 is placed in this neck 128.Bonnet 132 holds the spring loaded 134 being connected to valve rod 136.Valve rod 136 is operably connected to valve plug 138.Valve plug 138 and valve seat 130 interact, and flow through valve body 120 to outlet 124 to control fluid from entrance 122.
Barrier film 139 is connected to bonnet 132 and valve plug 138.Passage 126 and the chamber 140 held in the bonnet 132 of spring loaded 134 are separated by barrier film 139.Barrier film 139 is in response to the pressure difference between passage 126 and chamber 140.
Retainer 142 is connected to valve rod 136, and is remained on valve rod 136 by valve plug 138.This retainer can comprise the one or more fastening pieces 144 be connected on valve rod 136.Intermediate equilibria passage or path 146 be connecting passage 126 and the cavity 148 that is placed between valve plug 138 and chamber 140 fluidly.Hydrodynamic pressure on valve plug 138 is balanced by the fluid flowing through balance channel 146.Balance channel 146 is different from the balance channel 46 in Fig. 1, and middle inductance balance path 146 is almost positioned at the center of retainer 142 and only comprises a main balance channel 146.Middle induction diaphragm type balance regulator bears high step-down (droop) under low entry pressure, and this causes the Flux Loss under low entry pressure.
Model utility content
Therefore, edge induction diaphragm type regulator bears high pressure-charging under high inlet pressure, and middle induction diaphragm type balance regulator bears high step-down under low entry pressure, and this all result in the Flux Loss of process-liquid.For this reason, the invention provides a kind of balance pressure intensity regulator with the balanced trim comprising variable pressure induction region.
According to an illustrative aspects of the present utility model, balance pressure intensity regulator comprises valve body, and valve body has the fluid input and fluid output that are connected by fluid passage.Valve seat is arranged in described fluid passage.Equilibrium valve plug assembly is arranged in described fluid passage, described equilibrium valve plug assembly comprise to coordinate with described valve seat optionally open or closed described fluid passage valve plug, described valve plug is operably connected to valve rod retainer, by cavity and the separated barrier film of described fluid passage, the intermediate equilibria passage be connected with described layer Cavity Flow by described fluid passage and the peripheral balance passage that is connected with described layer Cavity Flow by described fluid passage, described peripheral balance passage is between described retainer and described valve plug.
According to another illustrative aspects of the present utility model, equilibrium valve plug assembly comprises: valve plug, and it coordinates with described valve seat optionally opens or closed described fluid passage; Retainer, valve plug is operably connected to valve rod by it; Barrier film, cavity and fluid passage are separated by it; Intermediate equilibria passage, described fluid passage is connected with described layer Cavity Flow by it; And peripheral balance passage, described fluid passage is connected with described layer Cavity Flow by it, and described peripheral balance passage is between described retainer and described valve plug.
Further according to any one or multiple aforesaid aspect, described balance pressure intensity regulator and/or equilibrium valve plug assembly also can comprise any one or multiple following preferred form.
In some preferred forms, described balance pressure intensity regulator and/or equilibrium valve plug assembly can comprise can along the retainer of the longitudinal axis of described valve rod relative to described valve plug movement.
In other preferred form, described retainer is connected to described valve rod by fastening piece.
In other preferred form, described balance pressure intensity regulator and/or equilibrium valve plug assembly can comprise the intermediate equilibria passage extending through described fastening piece.
In other preferred form, described balance pressure intensity regulator and/or equilibrium valve plug assembly can comprise the pressure induction spring be arranged between described retainer and described valve plug.
In other preferred form, described pressure induction spring is biased described retainer away from described valve plug.
In other preferred form, described balance pressure intensity regulator and/or equilibrium valve plug assembly can comprise the valve plug spring seat be arranged between described retainer and described valve plug.
In other preferred form, described valve plug spring seat can comprise balance channel.
In other preferred form, described retainer can comprise outward extending flange.
In other preferred form, described outward extending flange can comprise inclined-plane.
In other preferred form, described valve plug can comprise intermediate hole, and described intermediate hole comprises the first portion with the first diameter and the second portion with Second bobbin diameter, and described first diameter is greater than described Second bobbin diameter.
Any embodiment of balance regulator disclosed herein or equilibrium valve plug assembly all can be used for advantageously providing the low step-down under low entry pressure and the low pressure charging under high inlet pressure, consequently leads to the flow of the increase within the scope of inlet pressure from low to high.
Accompanying drawing explanation
Fig. 1 is the viewgraph of cross-section of the edge inductance balance regulator of prior art;
Fig. 2 is the viewgraph of cross-section of the middle inductance balance regulator of prior art;
Fig. 3 is the viewgraph of cross-section with the balance regulator of variable pressure induction region according to instruction structure of the present disclosure;
Fig. 4 is the valve plug of the balance regulator of Fig. 3 and the perspective view of retainer;
Fig. 5 A is the viewgraph of cross-section with the alternative embodiment of the balance regulator of variable pressure induction region according to instruction structure of the present disclosure;
Fig. 5 B is the viewgraph of cross-section of the alternative embodiment of Fig. 5 A, and wherein intermediate equilibria passage gets clogged; And
Fig. 6 is the valve plug of the balance regulator of Fig. 5 A and the perspective view of retainer;
Although the disclosure is vulnerable to various amendment and alternative constructions, some the illustrative embodiment in them is shown in the drawings, and will be discussed in more detail below.But, it should be understood that the particular form not being intended to go the disclosure to be restricted to disclosed by these, on the contrary, be intended that and be to cover all modifications fallen in spirit and scope of the present utility model, alternative structure and equivalent.
Embodiment
Referring now to accompanying drawing, specifically see Fig. 3-6, balance pressure intensity regulator assembly is marked as numeral 211,311 substantially.Balance pressure intensity regulator assembly 211,311 shown in Fig. 3-6 can be used to the regulator valve with valve body and bonnet similar shown in same Fig. 1 with Fig. 2.When the balance pressure intensity regulator assembly in Fig. 3-6 comprises the parts corresponding with the parts of the balance pressure intensity regulator in Fig. 1 or Fig. 2, these parts will similarly be marked, difference is only that the reference character in Fig. 3-6 increases by 200 or 300 than the parts in Fig. 1, increases by 100 or 200 than the similar parts in Fig. 2.Such as, the mark of the corresponding part in Fig. 3 and Fig. 4 increases by 100 than the corresponding part shown in Fig. 2.Similarly, the mark of the corresponding part in Fig. 5 and Fig. 6 increases by 200 than the corresponding part shown in Fig. 2.
Referring now to Fig. 3 and Fig. 4, balance pressure intensity regulator assembly 211 comprises the valve rod 236 being operably connected to valve plug 238.Valve plug 238 and valve seat interact to control fluid and flow through valve body.
Equilibrium valve plug assembly 211 comprises sleeve 254.Valve plug 238 is operationally fixed to valve rod 236 by retainer 242.Sleeve 254 has intermediate hole 253, and when valve plug 238 to-and-fro motion controls fluid flowing, intermediate hole 253 keeps and guides valve plug 238.Sleeve 254 can have the outer surface 256 of inclination, in order to increase gap in valve body and/or to strengthen the assembling of balance pressure intensity regulator.Sleeve 254 also can comprise one or more outer ring shoulder 258, and it is clamped between bonnet and valve body to be arranged by sleeve 254 and to remain in valve body.
Barrier film 239 is connected to sleeve 254 and valve plug 238.Passage in valve body and the chamber between balance pressure intensity regulator assembly 211 and the bonnet holding spring loaded 234 240 are separated by barrier film 239.Barrier film 239 is in response to the passage in valve body and the pressure difference between chamber 240.
Retainer 242 is connected to valve rod 236, and valve plug 238 is operably connected to valve rod 236.Retainer 242 can comprise one or more fastening piece 244, and such as, nut, these fastening pieces are operably connected to valve rod 236.Intermediate equilibria passage 246a extends through at least one fastening piece 244 and retainer 242, fluid passage fluid to be connected to the cavity 248 between valve plug 238 and chamber 240.One or more peripheral balance passage 246b between retainer 242 and valve plug 238, so that fluid passage fluid is connected to cavity 248.Peripheral balance passage 246b changes size according to inlet pressure, and this will be discussed further below.Hydrodynamic pressure on valve plug 238 balances compared with the fluid in low pressure region by moving to from higher pressure region through balance channel 246a, 246b.
Retainer 242 is connected to fastening piece 244 slidably, makes retainer 242 can longitudinal sliding motion in valve plug 238.Fastening piece 244 comprises annular flange 252, in order to stop retainer 242 from fastening piece 244 landing.Retainer 242 comprises intermediate hole 255, and the size and shape of intermediate hole 255 is suitable for the outer surface holding fastening piece 244.Valve plug spring seat 257 is formed in the cavity 259 between retainer 242 and valve plug 238 between retainer 242 and valve plug 238.Cavity 259 comprises first portion 260 and second portion 262, and first portion 260 has the first diameter, and second portion 262 has the Second bobbin diameter different from the first diameter.In certain embodiments, the first diameter is greater than Second bobbin diameter.Valve plug spring seat 257 is arranged in second portion 262.Although valve plug spring seat 257 is illustrated as the parts be separated with valve plug 238, in other embodiments, valve plug spring seat 257 can form with valve plug 238.
Retainer 242 comprises formation retainer spring seat 264 on its outer surface.Retainer spring seat 264 can be formed by the seat shoulder 266 extended away from intermediate hole 255 outward radial.Pressure induction spring 270 is arranged between valve plug spring seat 257 and retainer spring seat 264.Pressure induction spring 270 bias keeper 242 is away from valve plug spring seat 257.Peripheral annular flange 272 extends radially outwardly away from retainer 242.In certain embodiments, peripheral annular flange 272 comprises inclined-plane 274, and it has the maximum diameter away from valve plug spring seat 257, and the minimum diameter of close valve plug spring seat 257.The maximum diameter of peripheral annular flange 272 equals the first diameter of the first portion 260 of cavity 259 substantially, makes when peripheral annular flange 272 is arranged in first portion 260, stops fluid to flow between retainer 242 and valve plug 238.On the other hand, when peripheral annular flange 272 is positioned at beyond first portion 260 (such as, when pressure induction spring 270 promote retainer 242 leave valve plug 238 time), there is gap between peripheral annular flange 272 and valve plug 238, this gap allows fluid flow through peripheral balance passage 246b and flow into cavity 259.
Pressure induction spring 270 can be configured such that retainer 242 is biased to open position, and at this moment peripheral annular flange 272 is positioned at completely beyond cavity 259 under minimum or low entry pressure.This position corresponds to the fully open position allowing fluid to flow through intermediate equilibria passage 246a and peripheral balance passage 246b, result in the low step-down under low entry pressure.Therefore, disclosed equilibrium valve plug assembly 211 has the fluid displacement of increase under low entry pressure relative to known middle inductance balance pressure regulator.
When the fluid pressure of ingress increases, closing force produces by by the fluid pressure be pressed on the outer surface of retainer 242.When closing force starts to overcome the spring force produced by pressure induction spring 270, beginning is moved towards valve plug spring seat 257 by retainer 242.Along with retainer 242 moves towards valve plug spring seat 257, peripheral annular flange 272 will enter cavity 259 and final against valve plug 238.When peripheral annular flange 272 enters cavity 259, the fluid flowing through peripheral balance passage 246b will reduce, and stop flowing at peripheral annular flange 272 against during valve plug 238.When retainer 242 moves towards operating position, the inclined-plane of peripheral annular flange 272 provides the size reduced gradually of peripheral balance passage 246b.In one embodiment, inclined-plane 274 can tilt 30 ° to 60 ° relative to valve rod 236.In complete operating position, wherein peripheral annular flange 272 is arranged in cavity 259 completely, and fluid is prevented from flowing through peripheral balance passage 246b, and equilibrium valve plug assembly 211 is transformed into inductive component only by this.Therefore, disclosed equilibrium valve plug assembly 211 has low pressure charging under high inlet pressure, provides the fluid flow of increase relative to known edge inductance balance pressure regulator under high inlet pressure.
In certain embodiments, valve plug spring seat 257 can comprise one or more balance channel 280, and it allows fluid to flow into cavity 248 from cavity 259.Similarly, intermediate equilibria passage 246a can be connected to cavity 248 by fluid, flows into cavity 248 to allow fluid.Generally, intermediate equilibria passage 246a always opens, and allows flowing between the path of fluid in valve body and cavity 248 thus, balances fluid pressure in that region.On the other hand, peripheral balance passage 246b can open according to inlet pressure and pressure induction spring 270 or close.
Referring now to Fig. 5 A, 5B and Fig. 6, another embodiment of balance pressure intensity regulator assembly 311 comprises the valve rod 336 being operably connected to valve plug 338.Valve plug 338 and valve seat interact to control fluid and flow through valve body.
Equilibrium valve plug assembly 311 comprises sleeve 354.Valve plug 338 is operationally fixed to valve rod 336 by retainer 342.Sleeve 354 has intermediate hole 353, and when valve plug 338 to-and-fro motion controls fluid flowing, intermediate hole 353 keeps and guides valve plug 338.Sleeve 354 can have the outer surface 356 of inclination, in order to increase gap in valve body and/or to strengthen the assembling of balance pressure intensity regulator.Sleeve 354 also can comprise one or more outer ring shoulder 358, and it is clamped between bonnet and valve body to be arranged by sleeve 354 and to remain in valve body.
Barrier film 339 is connected to sleeve 354 and valve plug 338.Passage in valve body and the chamber between balance pressure intensity regulator assembly 311 and the bonnet holding spring loaded 334 340 are separated by barrier film 339.Barrier film 339 is in response to the passage in valve body and the pressure difference between chamber 340.
Retainer 342 is connected to valve rod 336, and valve plug 338 is operably connected to valve rod 336.Retainer 342 can comprise one or more fastening piece 344, and such as, nut, these fastening pieces are operably connected to valve rod 336.Intermediate equilibria passage 346a extends through at least one fastening piece 344 and retainer 342, fluid passage fluid to be connected to the cavity 348 between valve plug 338 and chamber 340.One or more peripheral balance passage 346b between retainer 342 and valve plug 338, so that fluid passage fluid is connected to cavity 348.Peripheral balance passage 346b changes size according to inlet pressure, and this will be discussed further below.Hydrodynamic pressure on valve plug 338 balances compared with the fluid in low pressure region by moving to from higher pressure region through balance channel 346a, 346b.
Retainer 342 is connected to fastening piece 344 slidably, makes retainer 342 can longitudinal sliding motion in valve plug 338.Fastening piece 344 comprises annular flange 352, in order to stop retainer 342 from fastening piece 344 landing.Retainer 342 comprises intermediate hole 355, and the size and shape of intermediate hole 355 is suitable for the outer surface holding fastening piece 344.Valve plug spring seat 357 is formed in the cavity 359 between retainer 342 and valve plug 338 between retainer 342 and valve plug 338.Cavity 359 comprises first portion 360 and second portion 362, and first portion 360 has the first diameter, and second portion 362 has the Second bobbin diameter different from the first diameter.In certain embodiments, the first diameter is greater than Second bobbin diameter.Although valve plug spring seat 357 is illustrated as the parts be separated with valve plug 338, in other embodiments, valve plug spring seat 357 can form with valve plug 338.
Retainer 342 comprises formation retainer spring seat 364 on its outer surface.Retainer spring seat 364 can be formed by the seat shoulder 366 extended away from intermediate hole 355 outward radial.Pressure induction spring 370 is arranged between valve plug spring seat 357 and retainer spring seat 364.Pressure induction spring 370 bias keeper 342 is away from valve plug spring seat 357.Peripheral annular flange 372 extends radially outwardly away from retainer 342.In certain embodiments, peripheral annular flange 372 comprises inclined-plane 374.The outer diameter of peripheral annular flange 372 equals the first diameter of the first portion 360 of cavity 359 substantially, makes when peripheral annular flange 372 is arranged in first portion 360, stops fluid to flow between retainer 342 and valve plug 338.On the other hand, when peripheral annular flange 372 is positioned at beyond first portion 360 (such as, when pressure induction spring 370 promote retainer 342 leave valve plug 338 time), there is gap between peripheral annular flange 372 and valve plug 338, this gap allows fluid flow betwixt and flow into cavity 359.
Pressure induction spring 370 can be configured such that retainer 342 is biased to open position, and at this moment peripheral annular flange 372 is positioned at completely beyond cavity 359 under minimum or low entry pressure.This position corresponds to the fully open position allowing fluid to flow through intermediate equilibria passage 346a and peripheral balance passage 346b, which results in the low step-down under low entry pressure.Therefore, disclosed equilibrium valve plug assembly 311 has the fluid displacement of increase under low entry pressure relative to known middle inductance balance pressure regulator.
When the fluid pressure of ingress increases, closing force produces by by the fluid pressure be pressed on the outer surface of retainer 342.When closing force starts to overcome the spring force produced by pressure induction spring 370, beginning is moved towards valve plug spring seat 357 by retainer 342.Along with retainer 342 moves towards valve plug spring seat 357, peripheral annular flange 372 will enter cavity 359.When peripheral annular flange 372 enters cavity 359, be arranged in cavity 359 completely along with peripheral annular flange 372 becomes, the fluid flowing through peripheral balance passage 346b will reduce.In complete operating position, wherein peripheral annular flange 372 is arranged in cavity 359 completely, substantially reduces the fluid flowing flowing through peripheral balance passage 346b.Therefore, disclosed equilibrium valve plug assembly 311 has low pressure charging under high inlet pressure, provides the fluid flow of increase relative to known edge inductance balance pressure regulator under high inlet pressure.Although the fluid flowing through peripheral balance passage 346b is minimized under high inlet pressure, but fluid continues flow through peripheral balance passage 346b and intermediate equilibria passage 346a, as long as make peripheral balance passage 346b and intermediate equilibria passage 346a keep not getting clogged, then equilibrium valve plug assembly 311 dual sense.
If intermediate equilibria passage 346a gets clogged or blocked, as shown in Figure 5 B, by allowing fluid to flow through peripheral balance passage 346b, equilibrium valve plug assembly 311 continues to operate under edge inductive mode.Therefore, if intermediate equilibria passage 346a gets clogged or blocked, so the equilibrium valve plug assembly 311 of Fig. 5 A-6 comprises fail-safe operator scheme.
Any embodiment of balance regulator disclosed herein or equilibrium valve plug assembly all can be used for advantageously providing the low step-down under low entry pressure and the low pressure charging under high inlet pressure, consequently leads to the flow of the increase within the scope of inlet pressure from low to high.
Although describe some balance regulator and balance cypriot valve components according to instruction of the present disclosure here, the coverage area of this patent is not limited to this.On the contrary, although illustrated according to various preferred embodiment and described the utility model, clearly, except above-mentioned, can also be carried out some and change and amendment.This patent covers all examples of the disclosure instruction in the scope falling into admissible equivalent.Therefore, of the present disclosurely all changes in order to protect one of ordinary skill in the art to expect and amendment is intended that.
Claims (20)
1. balance pressure intensity regulator, is characterized in that, comprising:
Valve body, it has the fluid input and fluid output that are connected by fluid passage;
Valve seat, it is arranged in described fluid passage;
Equilibrium valve plug assembly, it is arranged in described fluid passage, and described equilibrium valve plug assembly comprises:
Valve plug, it coordinates with described valve seat optionally opens or closed described fluid passage;
Retainer, described valve plug is operably connected to valve rod by it;
Barrier film, cavity and described fluid passage are separated by it;
Intermediate equilibria passage, described fluid passage fluid is connected to described cavity by it; And
Peripheral balance passage, described fluid passage fluid is connected to described cavity by it, and described peripheral balance passage is between described retainer and described valve plug.
2. balance pressure intensity regulator according to claim 1, is characterized in that, described retainer can move along the longitudinal axis of described valve rod relative to described valve plug.
3. balance pressure intensity regulator according to claim 1, is characterized in that, described retainer is connected to described valve rod by fastening piece.
4. balance pressure intensity regulator according to claim 3, is characterized in that, described intermediate equilibria passage extends through described fastening piece.
5. balance pressure intensity regulator according to claim 2, is characterized in that, also comprises the pressure induction spring be arranged between described retainer and described valve plug.
6. balance pressure intensity regulator according to claim 5, is characterized in that, described pressure induction spring is biased described retainer away from described valve plug.
7. balance pressure intensity regulator according to claim 6, is characterized in that, also comprises the valve plug spring seat be arranged between described retainer and described valve plug.
8. balance pressure intensity regulator according to claim 7, is characterized in that, described valve plug spring seat comprises balance channel.
9. balance pressure intensity regulator according to claim 1, is characterized in that, described retainer comprises outward extending flange.
10. balance pressure intensity regulator according to claim 9, is characterized in that, described outward extending flange comprises inclined-plane.
11. balance pressure intensity regulator according to claim 1, is characterized in that, described valve plug comprises intermediate hole, and described intermediate hole comprises the first portion with the first diameter and the second portion with Second bobbin diameter, and described first diameter is greater than described Second bobbin diameter.
12. for the equilibrium valve plug assembly of balance pressure intensity regulator, and it is characterized in that, described equilibrium valve plug assembly comprises:
Retainer, valve plug is operably connected to valve rod by it;
Barrier film, cavity and fluid passage are separated by it;
Intermediate equilibria passage, described fluid passage fluid is connected to described cavity by it; And
Peripheral balance passage, described fluid passage fluid is connected to described cavity by it, and described peripheral balance passage is between described retainer and described valve plug.
13. equilibrium valve plug assemblies according to claim 12, is characterized in that, described retainer can move along the longitudinal axis of described valve rod relative to described valve plug.
14. equilibrium valve plug assemblies according to claim 12, it is characterized in that, described retainer is connected to described valve rod by fastening piece.
15. equilibrium valve plug assemblies according to claim 14, is characterized in that, described intermediate equilibria passage extends through described fastening piece.
16. equilibrium valve plug assemblies according to claim 12, is characterized in that, also comprise the pressure induction spring be arranged between described retainer and described valve plug.
17. equilibrium valve plug assemblies according to claim 16, is characterized in that, described pressure induction spring is biased described retainer away from described valve plug.
18. equilibrium valve plug assemblies according to claim 17, is characterized in that, also comprise the valve plug spring seat be arranged between described retainer and described valve plug.
19. equilibrium valve plug assemblies according to claim 18, is characterized in that, described valve plug spring seat comprises balance channel.
20. equilibrium valve plug assemblies according to claim 12, it is characterized in that, described retainer comprises outward extending flange.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420075971.8U CN204267818U (en) | 2014-02-20 | 2014-02-20 | Balance pressure intensity regulator and the equilibrium valve plug assembly for balance pressure intensity regulator |
| MX2016010711A MX2016010711A (en) | 2014-02-20 | 2015-02-06 | Balanced regulator having a balanced trim including a variable pressure sense area. |
| PCT/US2015/014714 WO2015126634A1 (en) | 2014-02-20 | 2015-02-06 | Balanced regulator having a balanced trim including a variable pressure sense area |
| EP15704919.8A EP3108320B1 (en) | 2014-02-20 | 2015-02-06 | Balanced regulator having a balanced trim including a variable pressure sense area |
| US14/625,006 US9678516B2 (en) | 2014-02-20 | 2015-02-18 | Balanced regulator having a balanced trim including a variable pressure sense area |
| SA516371687A SA516371687B1 (en) | 2014-02-20 | 2016-08-17 | Balanced regulator having a balanced trim including a variable pressure sense area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420075971.8U CN204267818U (en) | 2014-02-20 | 2014-02-20 | Balance pressure intensity regulator and the equilibrium valve plug assembly for balance pressure intensity regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204267818U true CN204267818U (en) | 2015-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420075971.8U Expired - Lifetime CN204267818U (en) | 2014-02-20 | 2014-02-20 | Balance pressure intensity regulator and the equilibrium valve plug assembly for balance pressure intensity regulator |
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| CN (1) | CN204267818U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104864140A (en) * | 2014-02-20 | 2015-08-26 | 艾默生过程管理调节技术公司 | Balancing adjustor provided with balancing valve internal part comprising variable pressure induction area |
-
2014
- 2014-02-20 CN CN201420075971.8U patent/CN204267818U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104864140A (en) * | 2014-02-20 | 2015-08-26 | 艾默生过程管理调节技术公司 | Balancing adjustor provided with balancing valve internal part comprising variable pressure induction area |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20150415 |