WO2005059413A2 - Bus de systeme de commande par fluides - Google Patents

Bus de systeme de commande par fluides Download PDF

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Publication number
WO2005059413A2
WO2005059413A2 PCT/US2004/041624 US2004041624W WO2005059413A2 WO 2005059413 A2 WO2005059413 A2 WO 2005059413A2 US 2004041624 W US2004041624 W US 2004041624W WO 2005059413 A2 WO2005059413 A2 WO 2005059413A2
Authority
WO
WIPO (PCT)
Prior art keywords
fluid
fluid control
bus
signal line
conduit
Prior art date
Application number
PCT/US2004/041624
Other languages
English (en)
Other versions
WO2005059413A3 (fr
Inventor
Richard A. Ales
William H. Glime
Original Assignee
Swagelok Company
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Swagelok Company filed Critical Swagelok Company
Publication of WO2005059413A2 publication Critical patent/WO2005059413A2/fr
Publication of WO2005059413A3 publication Critical patent/WO2005059413A3/fr

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
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/08—Servomotor systems incorporating electrically operated control means
    • F15B21/085—Servomotor systems incorporating electrically operated control means using a data bus, e.g. "CANBUS"
    • 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
    • F15B13/0814—Monoblock 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
    • F15B13/0821—Attachment or sealing of modular units to each other
    • 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
    • F15B13/0846—Electrical details
    • F15B13/0857—Electrical connecting means, e.g. plugs, sockets
    • 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
    • F15B13/0885—Assembly of modular units using valves combined with other components
    • F15B13/0892—Valves combined with fluid components
    • 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

Definitions

  • the present invention relates generally to fluid control arrangements.
  • the invention relates to a fluid control arrangement bus that provides two or more mediums to fluid control devices.
  • Some fluid systems or fluid control assemblies include devices that have pneumatically operated actuators, for which a supply of instrument air (shop air) under pressure is needed. Some systems may also include devices for which an electrical connection to a distant (remote) location is needed, either for supplying electric power and/or for communication. The devices may be distributed throughout a manufacturing facility or may be located adjacent to each other. Typically, individual instrument air lines are routed from the source of shop air to each [0004] pneumatically operated device of the fluid control assembly. Individual electrical lines are routed from a source of electrical power to each component that requires electrical power.
  • US Published Application 2002/0000256 Al discloses an example of one fluid control system. The entire disclosure of US Published Application 2002/0000256 Al is hereby incorporated by reference in its entirety. US Published Application 2002/0000256 Al discloses
  • fluid control systems including a plurality of surface mounted components, or “down mount” components, mounted on a base or substrate.
  • process and purge fluids are directed by the substrate between various ones of the surface mounted components, which control the flow of process fluid through the substrate.
  • Such systems are typically used in the semiconductor manufacturing industry, but may find application elsewhere such as, for example, analytical instrumentation.
  • the present invention is directed broadly to the provision of two or more mediums, such as, for example, pneumatic and electrical connections to fluid control devices.
  • the invention is directed to the provision of pneumatic and electrical connections to distributed components of the type described above.
  • the present invention provides a dual medium trunk line or bus.
  • the bus may be used to supply shop air to one or more components and also provide an electric connection to one or more component.
  • one fluid control system or arrangement bus provides fluid under pressure and data signals, such as control signals to a plurality of fluid control devices in a fluid control arrangement.
  • the fluid control arrangement bus includes an elongated tube or conduit and an elongated control signal line.
  • the elongated conduit is used to supply a source of pressurized fluid to a plurality of fluid control devices.
  • the elongated control signal line is integrally formed with the elongated conduit and is used to provide control signals to the plurality of fluid control devices.
  • the elongated control signal line may talce a variety of different forms.
  • the elongated control signal line provides both electrical power and digital or analog communications with the components.
  • the elongated control signal line could also be an optical signal line, for example, an optical fiber that can establish either optical communication or electrical communication along an optical fiber.
  • an insulation jacket surrounds the conduit and the elongated control signal line.
  • a separate connection to the bus line may be made at each component.
  • a plurality of connectors may be disposed along a length of the bus for coupling the conduit and the control signal line to the plurality of fluid control devices.
  • the connectors may take a variety of different forms.
  • the connector may include a fluid tee for coupling the fluid carrying conduit to a fluid control device.
  • the connector may include an insulation displacement pin for coupling the control signal line to a fluid control device.
  • the connection may, alternatively, be made with a connector that is part of the component itself, for example, a valve having a pneumatically operated actuator that is controlled by an electrically controlled pilot valve may include its own connector. Other connection techniques may be used as required for particular system designs.
  • the bus is configured to ensure proper alignment with a connector.
  • the elongated conduit may include a keyway for aligning the elongated control signal line with a connector control signal conductor.
  • the control signal conductor may be integral with a fluid tee that includes a key.
  • co-action of a fluid tee key and an elongated conduit keyway aligns the control signal line with the fluid tee conductor.
  • One fluid control system or arrangement includes a source of fluid pressure, a control unit, a plurality of fluid control devices, and a bus.
  • the bus includes an elongated tube or conduit that couples the source of fluid pressure to the fluid control devices, and an elongated control signal line integrally formed with the elongated conduit that links the control unit to fluid control devices.
  • the fluid control unit provides control signals to the plurality of fluid control devices.
  • one or more of the fluid control devices includes an electrically controlled interface that is controlled by signals provided by the signal line.
  • one or more of the fluid control devices may include an electrically controlled pilot or solenoid valve that is controlled by signals provided by the signal line.
  • One or more of the fluid control devices may be pneumatic valves that are controlled by controlling a pilot or solenoid valve. The state of a pneumatic valve may be changed by momentarily communicating fluid under pressure to a pilot or solenoid valve or venting a pilot or solenoid valve.
  • fluid under pressure and control signals are provided to a plurality of fluid control devices in a fluid control system or arrangement over a single bus.
  • a tube or conduit of a fluid and control signal bus is coupled to a source of fluid pressure.
  • a control signal line of the bus is coupled to a control unit.
  • Fluid inputs of the plurality fluid control devices are coupled to the conduit and signal inputs of the plurality fluid control devices are coupled to the signal line.
  • Fluid under pressure is provided from the source of fluid pressure through the conduit to the fluid control devices.
  • Control signals are provided from the control unit over the signal line to the fluid control devices.
  • the invention is thus applicable to and useful for, among others, fluid control systems using components that have self-contained pilot valves or pilot controls for control of the constant supply of pressurized gas that is provided by the bus.
  • the bus is preferably, but not necessarily, positioned, or runs along, the top of the components.
  • Figure 1 is a perspective view of a fluid control system that includes devices that are coupled to a bus;
  • Figure 2 is a top view of a fluid control system that includes devices coupled to a bus;
  • Figure 3 is a sectional view taken along the plane indicated by lines 3—3 in Figure 2;
  • Figure 4A is an enlarged exploded portion of the view of Figure 3 indicated by reference character 4 A in Figure 3;
  • Figure 4B is an exploded sectional view of a bus connector;
  • Figure 5 is a perspective view of a bus connector component
  • Figure 6 is a top view of a bus connector component, illustrating coupling of a conduit to the bus connector component
  • Figure 7 is a top view of a bus coupled to a bus connector component
  • Figure 8 is a top view of a bus connector
  • Figure 9 is a side elevation view of the bus connector illustrated by Figure 8.
  • Figure 10 is a sectional view taken along the plane indicated by lines 10—10 in Figure 9;
  • Figure 11 is a schematic illustration of a fluid control system
  • Figure 12 is an illustration of a pneumatic valve that includes a pilot valve.
  • the present invention is directed broadly to the provision of two or more mediums, such as, for example, pneumatic and electrical connections to fluid control devices 12 in a fluid control arrangement, such as the illustrated fluid control system 8.
  • the present invention provides a dual medium trunk line or bus 10.
  • Figures 1 and 2 illustrate an example of a fluid control system 8.
  • the fluid system 8 includes a plurality of surface mounted devices 12.
  • the bus 10 interconnects some of the devices 12.
  • the bus 10 has an end portion 14 that connects, to a source 16 of shop air, to a source of electric power 18, and to a digital communications component 20 or network (see Figure 11).
  • the fluid control system bus 10 provides fluid under pressure and control signals to a plurality of fluid control devices 12 in the fluid control system 8.
  • One bus provides fluid under pressure and control signals to a plurality of fluid control devices.
  • the fluid control devices are serially connected by a single bus.
  • the bus 10 includes an elongated tube or conduit 22 and an elongated control or data signal line 24.
  • the elongated conduit 22 supplies pressurized fluid from the source of pressurized fluid 16 ( Figure 11) to a plurality of fluid control devices 12.
  • the elongated control signal line 24 is integrally formed with the elongated conduit.
  • the elongated control signal line 24 provides data signals, such as control signals to the plurality of fluid control devices 12.
  • the control signal line 24 and the conduit 22 are encased in an insulation jacket 120.
  • a passage is included in the insulation jacket to define the conduit 24.
  • the tube or conduit can take a variety of different forms.
  • the pneumatic conduit 22 is adapted for carrying a flow of shop air to the devices 12.
  • the pneumatic conduit 22 may be made from rubber or another suitable material. Referring to Figures 4A, 4B and 10, the pneumatic conduit 22 has a central passage 128 through which shop air flows from the source and is available to the devices 12.
  • the illustrated pneumatic conduit 22 is completely encased in the insulation jacket 120.
  • the signal line 24 can take a variety of different forms.
  • the signal line could be an optical fiber line or an electrically conductive wire.
  • the signal line comprises a negative conductor 124, and a positive conductor 126.
  • the negative conductor 124 and the positive conductor 126 are encased in the insulation jacket 120.
  • the signal line 24 could comprise a single conductor.
  • a ground could be provided by a substrate 28 ( Figure 1) that the fluid control devices 12 are mounted upon.
  • a single conductor could provide power and control signals to the fluid control devices 12. The ground or return would be provided through the substrate.
  • the illustrated negative conductor 124 is made from metal, such as a flexible or stranded wire or cable.
  • the negative conductor 124 is electrically insulated from the pneumatic conduit 22 by the insulation jacket 120.
  • the positive conductor 126 is made from metal, such as a flexible or stranded wire or cable, and preferably the same material as the negative conductor 124.
  • the positive conductor 26 is electrically insulated from the negative conductor 124 and from the pneumatic conduit 22 by the insulation jacket 120.
  • the conduit 22 and the control signal line 24 can be arranged in a variety of different configurations.
  • the present invention is not limited to the disclosed configurations but also is applicable to arrangements of conductors and pneumatic conduits having different configurations.
  • the pneumatic conduit 22 and the two conductors 124 and 126 have circular cross-sections.
  • the two conductors 124 and 126 extend parallel to the pneumatic conduit 22 but n are spaced off to one side of the pneumatic conduit, all in one linear array.
  • the negative conductor 124 is disposed between the pneumatic conduit 22 and the positive conductor 126.
  • Figure 10 illustrates another tube or conduit and control signal line configuration.
  • the bus 10 includes a conduit 22, a positive conductor 126, a negative conductor 124, and an insulation jacket 120.
  • the elongated conduit 22 includes a keyway 23 for aligning the positive conductor 126 and the negative conductor 124 with positive and negative connector conductors 40, 38 (See Figures 8 and 9).
  • the positive conductor 126 and the negative conductor 124 are diametrically opposed on an outer surface 42 of the conduit 22.
  • the insulation jacket surrounds the conduit 22, the negative conductor 124, and the positive conductor 126.
  • the negative conductor 124 and the positive conductor 126 are disposed between the insulation jacket and the conduit 22.
  • the invention is not limited to the disclosed arrangements but instead is applicable to conductors and pneumatic conduits disposed in a variety of different arrangements. More than two conductors or one conductor can be included in the bus 10.
  • a plurality of connectors 130 are disposed along the length of the bus 10 for coupling the tube or conduit 22 and the control signal line 24 to the plurality of fluid control devices 12.
  • the connectors 130 are associated in a one to one relationship with the devices 12 to be connected.
  • FIG. 4A One example of a connector 130 is illustrated by Figure 4A.
  • the connector illustrated by Figure 4B includes a first part 132 and a second part 134.
  • the first part 132 of the connector 130 is mounted on, or formed with, the device 12 and includes a hollow needle 136 that projects upwardly from a recess 138 in a base 139 of the connector.
  • the needle 136 has a sharp upper end portion 140 that is adapted to pierce the insulation jacket 120 and the pneumatic conduit 22 to provide fluid communication between the fluid passage 128 in the pneumatic conduit and the interior of the needle.
  • the needle 136 has a lower end portion 142 that is connected in fluid communication with the air-actuated portion of the device 12.
  • the interface between the needle 136 and the insulation jacket 120 may be sealed by an appropriate seal 144.
  • the first part 132 of the connector 130 also includes a positive insulation displacement pin 150 that projects upwardly from a recess 151 in the base 139.
  • the positive insulation displacement pin 150 has a sharp upper end 152 portion that is adapted to pierce the insulation jacket 120 to make an electrical connection with the positive conductor 126 of the bus 10.
  • the positive insulation displacement pin 150 has a lower end portion 154 that is electrically connected with the electrically operated portion of the device 12.
  • the first part 132 of the connector 130 also includes a negative insulation displacement pin 156 that projects upwardly from a recess 157 in the base 139.
  • the negative insulation displacement pin 156 has a sharp upper end portion 158 that is adapted to pierce the insulation jacket 120 to make an electrical connection with the negative conductor 124 of the bus 10.
  • the negative insulation displacement pin 156 has a lower end portion 60 that is electrically connected with the electrically operated portion of the device 12.
  • the second part 134 of the connector (shown schematically at 130) includes three adjacent recesses 162, 164 and 166.
  • the recesses 162, 164 and 166 are, together with the recesses 138, 151 and 157 in the first part 132, adapted to enclose the three portions 22, 124 and 126 of the bus.
  • the second part 134 of the connector 130 can be clamped or otherwise secured to the first part 132 of the connector, with the bus 10 captured between the first and second parts.
  • the needle 136 makes a pneumatic connection between the device 12 and the pneumatic passage 128 in the pneumatic conduit 22; the positive insulation displacement pin 152 makes an electrical connection between the device and the positive conductor 126 of the bus 10; and the negative insulation displacement pin 156 makes an electrical connection between the device and the negative conductor 124 of the bus.
  • Figures 4B, 5, 6 and 7 illustrates a second example of a bus connector 130 that is similar to the connector illustrated by Figure 4A.
  • the connector 130 illustrated by Figures 4B, 5, 6 and 7 includes a bottom portion 132 and a top portion 134 (Illustrated by Figure 4B).
  • the bottom portion of the connector, located on top of the fluid control device 12, includes a tee connector 163 for a pneumatic tube or conduit, and two insulation displacement pins for the negative and positive bus conductors 124, 126.
  • the pneumatic conduit is cut and the cut ends are and bent back during installation. The ends are fitted on to the ends of the tee connector 163.
  • the insulation pins engage the conductors in the same manner as the connector illustrated by Figure 4A.
  • Figures 8 and 9 illustrate a third example of a bus connector 130.
  • the connector 130 illustrated by Figures 8 and 9 is used to couple the example of the bus 10 illustrated by Figure 10 to the devices.
  • the connector illustrated by Figures 8 and 9 comprises a fluid tee 170, a positive conductor 40, a positive conductor clip 174, a negative conductor 38, and a negative conductor clip 178.
  • the tee 170 includes first and second push-on fittings 180, 182 for the conduit 22. Each push-on fitting includes a key 184 that corresponds to the keyway 23 defined by the conduit 22.
  • the co-action of the key 184 and the keyway 23 aligns the positive conductor 126 and the negative conductor 124 with positive and negative connector conductor clips 174, 178 respectively.
  • the positive conductor clip 174 and the negative conductor clip are pressed through the insulation jacket 120 to couple the negative conductor 38 and the positive conductor 40 to the negative bus conductor 124 and the positive bus conductor 126 respectively.
  • the negative conductor 38 and the positive conductor 40 are disposed on opposite sides of the tee 170. hi one embodiment, the positive and negative conductors 40, 38 are electrically isolated from the tee 170.
  • the tee 170 includes a third fitting 190 that couples the tee to the device.
  • the negative conductor 38 and the positive conductor 40 electrically connect the bus 10 to the device 12.
  • Each of the disclosed connectors allow the device 12 to receive shop air via the pneumatic conduit 22 and electrically connect the device 12 in the system. Operating power can be supplied to the device 12 over the positive and negative conductors 124 and 126 of the bus 10. In addition, two-way digital communication with the devices 12 can be established over the conductors 124 and 126, and/or additional conductor(s), for control of the devices 12 and/or for sensor or feedback readings from the devices 12.
  • the connectors 130 can be placed at any location along the length of the bus 10.
  • Figure 2 shows a top view with three equally spaced devices 12 connected with the bus 10 by three connectors 130 that are spaced equally along the bus.
  • Fig. 1 shows a plurality of devices 12 that are connected at non-regular locations along a bus 10.
  • the insulation jacket 120 and the pneumatic conduit 22 can be made from a rubber or plastic material that is easily repairable using common electrically insulating and leak-stop sealants, such as RTV silicone rubber, i the embodiment illustrated by Figure 4A, after a connection is made with the needle 136, the bus 10 can later be removed from the connector 130 for repositioning, and the bus is still usable.
  • the sealing material prevents most leakage from the pneumatic conduit 22. Any leakage that might occur would be inconsequential leakage of shop air at a relatively low pressure.
  • the insulating nature of the sealant maintains the electrical isolation of the positive and negative electrical conductors 126 and 124 when the connector 130 is removed from the bus 10.
  • FIG 11 is a schematic illustration of a fluid control system 8 in accordance with the present invention.
  • the illustrated fluid control system 8 includes a source of fluid pressure 16, a control unit 200, a plurality of fluid control devices 12, and a bus 10 that couples the source of fluid pressure to the fluid control devices and links the control unit 200 to fluid control devices.
  • the fluid control devices are a pneumatic valve 202, a pressure regulator 204, and a plow indicator 206.
  • the control unit 200 provides power and communication signals to the fluid control devices 12.
  • the control signals from the control unit 200 control operation of the fluid control devices.
  • the source of fluid pressure 16 provides pressurized fluid, such as air to the fluid control devices.
  • the fluid control devices 12 each include an embedded electrically controlled interface 208.
  • the embedded electrically controlled interface allows the control unit 200 to control the fluid control devices 12 and allows the fluid control devices to provide feedback signals, such as status signals back to the control unit 12.
  • the signals sent back to the control unit 200 from the interface are processed by the control unit 200 and used to adjust the control the fluid control devices.
  • the fluid controlled valve or pneumatic valve 202 may include one or more electrically controlled pilot or solenoid valves 212 that are controlled by signals provided by the signal line.
  • the integral pilot or solenoid valve provides electro- pneumatic control capabilities on the pneumatic valve, allow a single bus 10 to control multiple pneumatic valves 202, and improves valve actuation speed, and improves repeatability.
  • the pneumatic valve 202 includes a diaphragm valve 214, a pneumatic actuator 216, and a pilot or solenoid valve 212.
  • the pneumatic actuator 216 regulates flow of a process fluid through the diaphragm valve 214.
  • Pneumatic actuator uses air pressure to open and/or close the valve, thereby controlling the flow of fluid within and through the valve 214.
  • the pilot or solenoid valve 212 is controlled by the control unit 212 via the bus 10 to control the air pressure in the actuator 216, to thereby regulate the flow of the process fluid through the diaphragm valve.
  • the state of a pneumatic valve may be changed by controlling the pilot or solenoid valve 212 to momentarily apply pressure to the actuator 216 or momentarily vent the actuator.
  • an embedded electrically controlled interface 208 controls an actuator fill solenoid valve 220 and an actuator vent solenoid valve 222.
  • the pneumatic valve 202 may be opened by momentarily opening the fill solenoid valve 220 to pressurize the actuator 216.
  • the pneumatic valve 202 may be closed by momentarily opening the vent solenoid valve to vent the actuator 216.
  • the pneumatic valve includes a pressure sensor 230 that is coupled to the embedded interface unit 208.
  • the interface unit 208 provides pressure feedback signals to the control unit that are used to control the pneumatic valve.
  • the pressure source 16 includes a safety valve 240.
  • the safety valve closes the air supply 16 and vents the bus 10 in case of a failure. Venting the bus 10 allows any pressurized pneumatic valves to vent back through the fill solenoid valve.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)

Abstract

La présente invention concerne une ligne omnibus multi-milieu permettant de fournir plusieurs milieux à des dispositifs dans un système de commande par fluides. Ainsi, ce bus peut assurer des liaisons pneumatiques et électriques servant à commander des dispositifs de commande par fluides d'un système de commande par fluides.
PCT/US2004/041624 2003-12-11 2004-12-13 Bus de systeme de commande par fluides WO2005059413A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US48177303P 2003-12-11 2003-12-11
US60/481,773 2003-12-11

Publications (2)

Publication Number Publication Date
WO2005059413A2 true WO2005059413A2 (fr) 2005-06-30
WO2005059413A3 WO2005059413A3 (fr) 2005-09-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/041624 WO2005059413A2 (fr) 2003-12-11 2004-12-13 Bus de systeme de commande par fluides

Country Status (1)

Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2241765A1 (fr) * 2009-04-17 2010-10-20 HAWE Hydraulik SE Batterie de soupape dotée d'une soupape de dérivation à bus CAN

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020000256A1 (en) 1998-03-05 2002-01-03 Eidsmore Paul G. Modular surface mount manifold assemblies

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0803653B1 (fr) * 1996-04-26 2000-08-02 Hygrama Ag Système pneumatique de commande
DE19942508A1 (de) * 1999-09-07 2001-03-15 Festo Ag & Co Verfahren und Vorrichtung zur Übertragung von Steuer- und/oder Sensorsignalen
US6748968B1 (en) * 2000-06-16 2004-06-15 Arichell Technologies, Inc. Method and apparatus for combined conduit/electrical-conductor junction installation
DE10217504C1 (de) * 2002-04-19 2003-10-30 Festo Ag & Co Anschlussstück für flexible Kunststoffleitungen mit Sensoranordnung

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020000256A1 (en) 1998-03-05 2002-01-03 Eidsmore Paul G. Modular surface mount manifold assemblies

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2241765A1 (fr) * 2009-04-17 2010-10-20 HAWE Hydraulik SE Batterie de soupape dotée d'une soupape de dérivation à bus CAN
WO2010118887A1 (fr) * 2009-04-17 2010-10-21 Hawe Hydraulik Se Batterie de vannes avec vanne de dérivation à bus can

Also Published As

Publication number Publication date
WO2005059413A3 (fr) 2005-09-22

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