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NZ728806B2 - Proportional pressure controller with isolation valve assembly - Google Patents

Proportional pressure controller with isolation valve assembly

Info

Publication number
NZ728806B2
NZ728806B2 NZ728806A NZ72880617A NZ728806B2 NZ 728806 B2 NZ728806 B2 NZ 728806B2 NZ 728806 A NZ728806 A NZ 728806A NZ 72880617 A NZ72880617 A NZ 72880617A NZ 728806 B2 NZ728806 B2 NZ 728806B2
Authority
NZ
New Zealand
Prior art keywords
valve
isolation valve
exhaust
isolation
fluid
Prior art date
Application number
NZ728806A
Other versions
NZ728806A (en
Inventor
Richardson Joseph
C Williams Kevin
Neff Matthew
Robert H Neff
Original Assignee
Mac Valves Inc
Filing date
Publication date
Priority claimed from US15/052,307 external-priority patent/US9903395B2/en
Application filed by Mac Valves Inc filed Critical Mac Valves Inc
Publication of NZ728806A publication Critical patent/NZ728806A/en
Publication of NZ728806B2 publication Critical patent/NZ728806B2/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/0401—Valve members; Fluid interconnections therefor
    • F15B13/0402—Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/0401—Valve members; Fluid interconnections therefor
    • F15B13/0405—Valve members; Fluid interconnections therefor for seat valves, i.e. poppet valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/042—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure
    • F15B13/0426—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with fluid-operated pilot valves, i.e. multiple stage valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/042—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure
    • F15B13/043—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with electrically-controlled pilot valves
    • F15B13/0431—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with electrically-controlled pilot valves the electrical control resulting in an on-off function
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • F15B13/08—Assemblies of units, each for the control of a single servomotor only
    • F15B13/0803—Modular units
    • F15B13/0807—Manifolds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • F15B13/08—Assemblies of units, each for the control of a single servomotor only
    • F15B13/0803—Modular units
    • F15B13/0878—Assembly of modular units
    • F15B13/0896—Assembly of modular units using different types or sizes of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B2013/002—Modular valves, i.e. consisting of an assembly of interchangeable components
    • F15B2013/004—Cartridge valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/80—Other types of control related to particular problems or conditions
    • F15B2211/885—Control specific to the type of fluid, e.g. specific to magnetorheological fluid
    • F15B2211/8855—Compressible fluids, e.g. specific to pneumatics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
    • F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/04—Construction of housing; Use of materials therefor of sliding valves
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D11/00—Control of flow ratio
    • G05D11/02—Controlling ratio of two or more flows of fluid or fluent material
    • G05D11/13—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/20—Control of fluid pressure characterised by the use of electric means
    • G05D16/2006—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means
    • G05D16/2013—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means

Abstract

proportional pressure controller includes a body (12'') having inlet (28), outlet (30''), and exhaust ports (32''). A fill valve (54) communicates with pressurized fluid in the inlet port (28). A dump valve (56) communicates with pressurized fluid from the fill valve (54). An inlet poppet valve (36) opens by pressurized fluid through the fill valve (54). An exhaust poppet valve (80) when closed isolates pressurized fluid from the exhaust port (32''). An outlet flow passage (34) communicates with pressurized fluid when the inlet poppet valve (36) is open, and communicates with the outlet port (30'') and an exhaust/outlet common passage (86). An isolation valve assembly (110'') selectively isolates fluid flow to and from the inlet port (28) or the exhaust port (32'') to achieve a zero pressure condition. The isolation valve assembly (110'') is an isolation valve cartridge (152) received in the central body portion (22'') of the body (12'').

Claims (19)

1. A proportional pressure controller, comprising: a body having an inlet flow passage, an outlet flow passage, an exhaust/outlet common passage, and an exhaust flow passage; an inlet port in the body that opens to the inlet flow passage; an outlet port in the body that opens to the outlet flow passage and the exhaust/outlet common passage; an exhaust port in the body that opens to the exhaust flow passage; an inlet valve cavity in the body connecting the inlet flow passage and the outlet flow passage; an inlet poppet valve slidably disposed in the inlet valve cavity that is operable to control fluid flow between the inlet flow passage and the outlet flow passage; an exhaust valve cavity in the body connecting the exhaust/outlet common passage and the exhaust flow passage; an exhaust poppet valve slidably disposed in the exhaust valve cavity that is operable to control fluid flow between the exhaust/outlet common passage and the exhaust flow passage, wherein the inlet port and the outlet port are each created in a central body portion of the body; an isolation valve assembly integrated into the body of the proportional pressure controller, wherein the isolation valve assembly is defined as an isolation valve cartridge received in the central body portion of the body, the isolation valve cartridge including an isolation valve cavity in fluid communication with the outlet port and an isolation valve member slidably disposed in the isolation valve cavity, the isolation valve member being movable between an isolation valve closed position and an isolation valve open position; and wherein the proportional pressure controller further comprises an actuator controlling movement of the isolation valve member between the isolation valve closed position and the isolation valve open position; wherein the isolation valve member prevents fluid from flowing through the outlet port when the isolation valve member is in the isolation valve closed position and permits fluid flow through the outlet port when the isolation valve member is in the isolation valve open position; wherein the isolation valve cavity is defined by a cavity wall that is formed in the isolation valve cartridge and wherein the isolation valve cavity has a first end and a second end that is opposite the first end , and wherein the isolation valve assembly includes: first and second seat members disposed along the cavity wall of the isolation valve cavity , the second seat member being longitudinally spaced from the first seat member ; an intake port disposed in fluid communication with the outlet port in the housing such that the intake of the isolation valve assembly is operable to receive fluid from the outlet flow passage and the exhaust/outlet common passage through the outlet port ; a first discharge port that is positioned longitudinally between the first seat member and the second seat member ; a second discharge port , the intake port and the second discharge port being positioned on longitudinally opposite sides of the first discharge port ; and first and second seat engagement members extending outwardly from the isolation valve member at longitudinally spaced locations, wherein in the isolation valve closed position, the first seat engagement member contacts the first seat member such that the pressurized fluid in the intake port cannot flow to the first or second discharge ports and the second seat engagement member is spaced from the second seat member such that any fluid that is present at the first discharge port is exhausted or expelled through the second discharge port.
2. The proportional pressure controller of Claim 1, wherein the first seat engagement member of the isolation valve member contacts the first seat member when the isolation valve member is in the isolation valve closed position to fluidly isolate the intake port from the first and second discharge ports.
3. The proportional pressure controller of Claim 1, wherein the first seat engagement member of the isolation valve member is displaced away from the first seat member to permit fluid flow from the intake port, through the isolation valve cavity, and to the first discharge port and wherein the second seat engagement member of the isolation valve member contacts the second seat member when the isolation valve member is in the isolation valve open position to fluidly isolate the second discharge port from the first discharge port.
4. The proportional pressure controller of any one of Claims 1 to 3, wherein the isolation valve assembly includes: a first isolation valve piston positioned along the isolation valve member such that the first isolation valve piston is slidably disposed within the first end of the isolation valve cavity, the first seat engagement member being positioned longitudinally along the isolation valve member between the first isolation valve piston and the second seat engagement member; and a second isolation valve piston positioned along the isolation valve member such that the second isolation valve piston is opposite the first isolation valve piston and is slidably disposed within the second end of the isolation valve cavity, the second seat engagement member being positioned longitudinally along the isolation valve member between the second isolation valve piston and the first seat engagement member.
5. The proportional pressure controller of any one of Claims 1 to 4, wherein the isolation valve assembly further includes an isolation valve pressurization chamber that is open to the first end of the isolation valve cavity and wherein the actuator includes an actuator valve and an actuator valve passage, the actuator valve arranged in fluid communication with the inlet flow passage and the isolation valve pressurization chamber, the actuator valve operable to receive fluid from the inlet flow passage and pressurize the isolation valve pressurization chamber by supplying the fluid to the isolation valve pressurization chamber, and the actuator valve passage extending between the actuator valve and the isolation valve pressurization chamber for communicating the fluid from the actuator valve to the isolation valve pressurization chamber.
6. The proportional pressure controller of Claim 5, wherein the isolation valve member is biased to the isolation valve closed position and pressurization of the isolation valve pressurization chamber by the actuator valve operably moves the isolation valve member to the isolation valve open position.
7. The proportional pressure controller of any one of Claims 1 to 6, wherein the isolation valve assembly further comprises a vent passageway extending through the isolation valve member such that the first end of the isolation valve cavity remains in constant fluid communication with the second discharge port.
8. The proportional pressure controller of any one of Claims 1 to 7, further comprising: a cylinder cavity in the body disposed adjacent the inlet valve cavity; and a piston slidably disposed in the cylinder cavity and arranged in contact the inlet poppet valve such that displacement of the piston within the cylinder cavity causes movement the inlet poppet valve within the inlet valve cavity.
9. The proportional pressure controller of Claim 8, further comprising: a piston pressurization chamber in the body that is open to the cylinder cavity; and a fill valve arranged in fluid communication with the inlet flow passage and the piston pressurization chamber, the fill valve operable to receive fluid from the inlet flow passage and pressurize the piston pressurization chamber by supplying the fluid to the piston pressurization chamber; wherein the fluid supplied to the piston pressurization chamber is operable to exert a first force on the piston such that the piston is displaced within the cylinder cavity and moves the inlet poppet valve when the fill valve pressurizes the piston pressurization chamber.
10. The proportional pressure controller of Claim 9, further comprising: an exhaust valve pressurization chamber in the body that is open to the exhaust valve cavity; wherein the fill valve is arranged in fluid communication with the exhaust valve pressurization chamber and the fill valve is operable to pressurize the exhaust valve pressurization chamber by supplying the fluid to the exhaust valve pressurization chamber; wherein the fluid supplied to the exhaust valve pressurization chamber is operable to exert a second force on the exhaust poppet to hold the exhaust poppet valve closed.
11. The proportional pressure controller of Claim 10, further comprising: a fill inlet passage in the body that extends between the inlet flow passage and the fill valve for communicating the fluid from the inlet flow passage to the fill valve; a fill valve discharge passage in the body that extends between the fill valve, the piston pressurization chamber, and the exhaust valve pressurization chamber for communicating the fluid from the fill valve to the piston pressurization chamber and the exhaust valve pressurization chamber.
12. The proportional pressure controller of Claim 11, further comprising: a dump valve arranged in fluid communication with the fill valve discharge passage and the exhaust flow passage, the dump valve operable to direct the fluid in the fill valve discharge passage to the exhaust flow passage such that fluid pressure in the fill valve discharge passage, the piston pressurization chamber, and the exhaust valve pressurization chamber is reduced when the dump valve is actuated.
13. The proportional pressure controller of Claim 12, further comprising: a dump valve passage in the body that extends between the dump valve and the exhaust flow passage for communicating the fluid from the dump valve to the exhaust flow passage.
14. The proportional pressure controller of Claim 12, further comprising: a dump valve passage in the body that extends between the dump valve and a dump valve exhaust port that opens to an outer surface of the body.
15. The proportional pressure controller of Claim 12, further comprising: a dump valve passage in the body that extends between the dump valve and the second discharge port of the isolation valve assembly.
16. The proportional pressure controller of Claim 12, wherein the reduction in fluid pressure in the piston pressurization chamber caused by actuation of the dump valve operably relieves the first force from the piston.
17. The proportional pressure controller of Claim 12, wherein the reduction in fluid pressure in the piston pressurization chamber caused by actuation of the dump valve operably relieves the second force from the exhaust poppet valve allowing the exhaust poppet valve to open in response to a third force exerted on the exhaust poppet valve by fluid in the exhaust/outlet common passage of the body.
18. The proportional pressure controller of any one of Claims 12 to 17, further including: a first pressure signaling device positioned in the fill valve discharge passage that is operable to output a first pressure signal; and a control system electrically connected to the first pressure signaling device that is operable to receive the first pressure signal from the first pressure signaling device and control actuation of the fill valve, the dump valve, and the actuator valve in response to the first pressure signal.
19. The proportional pressure controller of Claim 18, further including: a second pressure signaling device positioned in the outlet flow passage that is operable to output a second pressure signal, the second pressure signaling device electrically connected to the control system such that the control system is operable to receive the second pressure signal from the second pressure signaling device and control actuation of the fill valve, the dump valve, and the actuator valve in response to both the first pressure signal from the first pressure signaling device and the second pressure signal from the second pressure signaling device.
NZ728806A 2017-02-02 Proportional pressure controller with isolation valve assembly NZ728806B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15/052,307 US9903395B2 (en) 2016-02-24 2016-02-24 Proportional pressure controller with isolation valve assembly

Publications (2)

Publication Number Publication Date
NZ728806A NZ728806A (en) 2024-04-26
NZ728806B2 true NZ728806B2 (en) 2024-07-30

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