EP2930410A1 - Système d'entraînement de soupape - Google Patents

Système d'entraînement de soupape Download PDF

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Publication number
EP2930410A1
EP2930410A1 EP14164028.4A EP14164028A EP2930410A1 EP 2930410 A1 EP2930410 A1 EP 2930410A1 EP 14164028 A EP14164028 A EP 14164028A EP 2930410 A1 EP2930410 A1 EP 2930410A1
Authority
EP
European Patent Office
Prior art keywords
medium
volume flow
valve
drive system
line
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP14164028.4A
Other languages
German (de)
English (en)
Inventor
Jan Kahl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to EP14164028.4A priority Critical patent/EP2930410A1/fr
Priority to CN201520210995.4U priority patent/CN204922171U/zh
Publication of EP2930410A1 publication Critical patent/EP2930410A1/fr
Withdrawn legal-status Critical Current

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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
    • F15B7/00—Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors
    • F15B7/005—With rotary or crank input
    • F15B7/006—Rotary pump input
    • 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
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/20507—Type of prime mover
    • F15B2211/20515—Electric motor
    • 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
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20561—Type of pump reversible
    • 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
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/27—Directional control by means of the pressure source
    • 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
    • F15B2211/30—Directional control
    • F15B2211/315—Directional control characterised by the connections of the valve or valves in the circuit
    • F15B2211/31505—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source and a return line
    • F15B2211/31511—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source and a return line having a single pressure source
    • 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
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40515—Flow control characterised by the type of flow control means or valve with variable throttles or orifices
    • 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
    • F15B2211/40—Flow control
    • F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
    • F15B2211/41563—Flow control characterised by the connections of the flow control means in the circuit being connected to a pressure source and a return line
    • 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/61—Secondary circuits
    • F15B2211/611—Diverting circuits, e.g. for cooling or filtering
    • 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/615—Filtering means
    • 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/62—Cooling or heating means
    • 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/625—Accumulators
    • 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/665—Methods of control using electronic components
    • F15B2211/6651—Control of the prime mover, e.g. control of the output torque or rotational speed
    • 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
    • F15B2211/875—Control measures for coping with failures
    • F15B2211/8752—Emergency operation mode, e.g. fail-safe operation mode

Definitions

  • the invention relates to a drive system comprising a valve with a transferable via a medium drive forces valve body and a medium volume flow source for generating the driving force, wherein the medium volume flow source is designed such that the valve body via the medium volume flow source is driven, wherein the medium Volumetric flow source comprises a first medium volume flow line and a second medium volume flow line, which are designed to transmit the transmissible via a medium driving forces.
  • the invention further relates to a method for operating a drive system for a valve.
  • Valves are used in various technical fields, such as in power plant construction. Particularly in power plant construction, the valves used there are designed to be bulky and generally have a comparatively high mass. Essentially, a valve comprises a valve housing and a valve plug, which must be moved by high forces. In general, these high forces, which are also referred to as driving forces, realized with a medium transferable forces, such as hydraulic forces.
  • the fluid volume flow source is used almost digitally. This means that the fluid volume flow source has a plurality of operating states, wherein in one operating state the fluid volume flow source is quasi off and has no rotational speed. This, however, is unfavorable for the fluid volume flow source.
  • the invention seeks to remedy the situation and offer a drive system that has better availability.
  • a drive system comprising a valve with a valve body that can be driven by drive forces and a medium volume flow source for generating the drive force, wherein the medium volume flow source is designed such that the valve body can be driven via the medium volume flow source, wherein the medium Volumetric flow source having a first medium-volume flow line and a second medium-volume flow line, which are designed for transmitting the transmittable via a medium driving forces, wherein the first medium-volume flow line with the second medium-volume flow line is fluidly connected to each other via a bypass line.
  • the drive system is characterized in that with the bypass line always a portion of the medium is diverted and thus the medium volume flow source always has a speed. With the drive system according to the invention high forces can be transmitted and are always available.
  • a throttle element for reducing the pressure of the medium is arranged in the bypass line. This ensures that a part of the medium not only flow to the valve, but a part is necessarily branched off into the bypass line, so that always a minimum volume flow of the medium volume flow source is guaranteed to allow the lubrication of the volume flow source.
  • the throttle body is designed as a throttle valve or expansion valve.
  • a cooling device for cooling the medium is arranged in the bypass line. This allows the heat to be released from the drive at high ambient temperatures.
  • a filter for filtering the medium is arranged in the bypass line. As a result, the medium is advantageously cleaned.
  • a shut-off device is arranged in the bypass line before and after the filter for this purpose.
  • the filter can be replaced during operation.
  • a valve device is provided in the first medium-volume flow line, which in a first position passes the medium through the medium volume flow line and in a second position prevents backflow of the medium from the medium volume flow source and at the same time a fluidic connection between the medium volume flow source and the bypass line manufactures.
  • valve device If the valve position on the valve is held for a longer time, the valve device is thus switched so that the medium can not escape from the drive system. At the same time, the medium volume flow source pumps through the cooling device and the filter almost without pressure.
  • a 3-way valve is provided in the bypass line, wherein in a position of the 3-way valve, a fluidic connection with a memory can be produced and thus an environment of the nursing bypass is possible.
  • the medium can be diverted and maintenance work can be performed casually.
  • a second bypass line which fluidly connects the first medium volume flow line and the second medium volume flow line to one another, wherein a pressure limiting valve is arranged in the second bypass line.
  • the pressure relief valve protects the drive system against impermissible pressures in case of malfunction of the medium volume flow source.
  • a third bypass line is formed, which connects the first medium volume flow line and the second medium volume flow line fluidly, wherein in the third bypass line, a check valve is arranged.
  • the non-return valve parallel to the medium volumetric flow source protects the drive system in case of malfunction of the direction of rotation of the medium volumetric flow source. As a result, the suction side is protected from pressure.
  • the invention is also characterized by a method for operating a drive system, wherein a portion of the medium is passed in continuous operation to the bypass line.
  • a throttle body is adjusted so that always flows a minimum medium volume flow.
  • Figure 1 is a schematic representation of the drive system.
  • the figure shows a drive system 1.
  • the drive system 1 comprises a valve 2 which has a valve inlet 3 and a valve outlet 4.
  • a valve cross-section 5 in the valve 2 is changed via a valve body 6.
  • the valve body 6 has a valve spindle 7, which can be moved via a medium unit 8 in a linear direction 9.
  • the medium unit 8 may be a hydraulic cylinder 12 having a first chamber 10 and a second chamber 11.
  • a piston 13 is arranged, which separates the first chamber 10 from the second chamber 11.
  • the first chamber 10 is fluidically connected to a first medium volume flow line 14.
  • the second chamber 11 is fluidically connected to a second medium volume flow line 15.
  • a medium can be moved.
  • the inflows and outflows in the first chamber 10 and the second chamber 11 leads to a movement of the piston 13 and thereby the spindle 7 in the linear direction 9.
  • the valve body 6 moves to the left when in the second medium Volume flow line 15 flows to the medium and in contrast flows out of the first chamber 10 via the first medium volume flow line 14 again.
  • a movement of the valve body 6 to the right takes place in that the medium flows into the first chamber 10 via the first medium volume flow line 14 and the medium flows out of the second chamber 11 via the second medium volume flow line 15.
  • the drive system 1 is shown schematically in the figure in the lower left corner in the figure.
  • the reference symbols T and P in this case denote a not-shown fluidic Connection between the drive system 1 and the hydraulic cylinder 12.
  • the hydraulic cylinder 12 further includes an electro-hydraulic quick-release release 16, which ensures that the drive is closed in any position by a spring force of a return spring 17.
  • the drive system 1 has a medium volume flow source 18, which comprises a speed-controlled pump 19, wherein the direction of rotation can be in both directions.
  • the speed-controlled pump 19 is driven by a servo motor 20.
  • the pump 19 is fluidically connected to the first medium-volume flow line 14.
  • the pump 19 is fluidically connected with its second output to the second medium volume flow line 15.
  • the medium volume flow source 18 is in this case designed such that the valve body 6 can be driven via the medium volume flow source 18.
  • the first medium volume flow line 14 and the second medium volume flow line 15 are designed to transmit the transferable via a medium driving forces.
  • the first medium volume flow line 14 is fluidly connected to the second medium volume flow line 15 via a bypass line 21. This is done in a first branch 22 in the first medium volume flow line 14.
  • a throttle member 23 is first arranged to reduce the pressure of the medium in the bypass line 21.
  • the throttle member 23 may be formed here as a throttle valve or as an expansion valve.
  • a 3-way valve 24 is arranged, which establishes a fluidic connection to a memory 26 in a position via a storage line 25.
  • a cooling device 27 for cooling the medium is arranged in the bypass line 21.
  • the cooling device 27 comprises a cooler 28 arranged in the bypass line 21 and a fan 29 driven by a motor 29.
  • the fan 30 generates the cooling effect on the radiator 28.
  • a filter 31 is arranged in the bypass line 21, wherein a 3-way valve 32 is arranged in front of the filter 31.
  • a check valve 34 is arranged.
  • the check valve 34 protects the filter 31 against reverse flow.
  • the radiator 28 releases the heat generated by the system.
  • the 3-way valve is used to change the filter 31.
  • the 3-way valve 24 in front of the radiator 28 serves to bypass the radiator 28 and the filter 31 for maintenance.
  • the 3-way valve 24 is connected so that the medium bypasses the radiator 28 and the 3-way valve 24.
  • the medium is flowed via the first medium volume flow line 14 to the hydraulic cylinder 12 and into the first chamber 10 via the servo motor 20 and the pump 19 and at the same time the medium is via the second chamber 11 and the second medium volume flow line 15 to the pump 19 streamed back.
  • a part of the medium is guided at the branch 22 to the bypass line 21.
  • the throttle member 23 is adjusted so that always flows a minimum volume flow of the medium.
  • a valve device 35 can be provided, which in a first position 36 passes the medium through the first medium volume flow line 14 and in a second position 37 prevents backflow of the medium in the first medium volume flow line 14 and at the same time a fluidic connection 38 between the first medium volume flow line 14 and the bypass line 21 produces.
  • the first medium-volume flow line 14 is fluidly connected via a second bypass line 39 to the second medium-volume flow line 15.
  • a pressure limiting valve 40 is arranged in the second bypass line 39.
  • the pressure relief valve 40 secures the system against impermissible pressures in case of malfunction of the medium volume flow source 18.
  • first medium volume flow line 14 is fluidically connected via a third bypass line 41 to the second medium volume flow line 15.
  • a check valve 42 is arranged in the third bypass line 41.
  • the check valve 42 parallel to the medium volume flow source 18 protects the drive system in case of malfunction of the direction of rotation of the medium volume flow source 18th
  • the drive system 1 is operated such that a portion of the medium is conducted in continuous operation to the bypass line 21.
  • the throttle member 23 is adjusted such that a minimum volume flow flows through the bypass line 21.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
EP14164028.4A 2014-04-09 2014-04-09 Système d'entraînement de soupape Withdrawn EP2930410A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP14164028.4A EP2930410A1 (fr) 2014-04-09 2014-04-09 Système d'entraînement de soupape
CN201520210995.4U CN204922171U (zh) 2014-04-09 2015-04-09 驱动系统

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14164028.4A EP2930410A1 (fr) 2014-04-09 2014-04-09 Système d'entraînement de soupape

Publications (1)

Publication Number Publication Date
EP2930410A1 true EP2930410A1 (fr) 2015-10-14

Family

ID=50473105

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14164028.4A Withdrawn EP2930410A1 (fr) 2014-04-09 2014-04-09 Système d'entraînement de soupape

Country Status (2)

Country Link
EP (1) EP2930410A1 (fr)
CN (1) CN204922171U (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180172177A1 (en) * 2015-07-31 2018-06-21 Voith Patent Gmbh Hydraulic drive for executing a linear movement
JP2021042745A (ja) * 2019-09-13 2021-03-18 日本ムーグ株式会社 蒸気タービン向け電動油圧アクチュエータシステムの油圧回路、及びそれを含む蒸気タービンシステム

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5410842A (en) * 1993-11-12 1995-05-02 Asi Technologies, Inc. Two speed hydraulic door operator
WO2012122159A2 (fr) * 2011-03-07 2012-09-13 Moog Inc. Système d'activation sous-marin
US20130098464A1 (en) * 2011-10-21 2013-04-25 Michael L. Knussman Closed-Loop Hydraulic System Having Regeneration Configuration
EP2620655A1 (fr) 2012-01-30 2013-07-31 Siemens Aktiengesellschaft Système d'entraînement pour une soupape

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5410842A (en) * 1993-11-12 1995-05-02 Asi Technologies, Inc. Two speed hydraulic door operator
WO2012122159A2 (fr) * 2011-03-07 2012-09-13 Moog Inc. Système d'activation sous-marin
US20130098464A1 (en) * 2011-10-21 2013-04-25 Michael L. Knussman Closed-Loop Hydraulic System Having Regeneration Configuration
EP2620655A1 (fr) 2012-01-30 2013-07-31 Siemens Aktiengesellschaft Système d'entraînement pour une soupape

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180172177A1 (en) * 2015-07-31 2018-06-21 Voith Patent Gmbh Hydraulic drive for executing a linear movement
US10578227B2 (en) * 2015-07-31 2020-03-03 Voith Patent Gmbh Hydraulic drive for executing a linear movement
JP2021042745A (ja) * 2019-09-13 2021-03-18 日本ムーグ株式会社 蒸気タービン向け電動油圧アクチュエータシステムの油圧回路、及びそれを含む蒸気タービンシステム
US11808158B2 (en) 2019-09-13 2023-11-07 Moog Japan Ltd. Electrohydrostatic actution system, hydraulic circuit of electrohydrostatic actution system, and steam turbine system including same

Also Published As

Publication number Publication date
CN204922171U (zh) 2015-12-30

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