WO2011128345A1 - Ensemble comprenant un régulateur de position électropneumatique et un entraînement pneumatique et dispositif d'arrêt pour un tel ensemble - Google Patents

Ensemble comprenant un régulateur de position électropneumatique et un entraînement pneumatique et dispositif d'arrêt pour un tel ensemble Download PDF

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Publication number
WO2011128345A1
WO2011128345A1 PCT/EP2011/055739 EP2011055739W WO2011128345A1 WO 2011128345 A1 WO2011128345 A1 WO 2011128345A1 EP 2011055739 W EP2011055739 W EP 2011055739W WO 2011128345 A1 WO2011128345 A1 WO 2011128345A1
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WO
WIPO (PCT)
Prior art keywords
shut
interface
pneumatic
positioner
drive
Prior art date
Application number
PCT/EP2011/055739
Other languages
German (de)
English (en)
Inventor
Jochen Gareis
Original Assignee
Siemens Aktiengesellschaft
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 Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2011128345A1 publication Critical patent/WO2011128345A1/fr

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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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/202—Externally-operated valves mounted in or on the actuator

Definitions

  • Pneumatic actuators are used to control of process valves often used, in which a valve to an actuator, for example, a closing body of a control, acting diaphragm by means of a gaseous Medi ⁇ killed, for in this application, the general term "air "is used, is pressurized and thus directed from ⁇ .
  • the application of the membrane with a variable pressure can be carried out on one side, wherein the membrane on the other side is loaded with a spring, or it may be two-sided, with different pressures on both
  • the pressure is controlled by an electropneumatic positioner in which an electrically controllable valve distributes pressurized supply air to the two membrane sides in the actuator via two exhaust ports, depending on the control.
  • EP 1632679 Bl is an electro-STEL lung regulator known, which is provided to a pneumatic actuator with a pneumatic interface to the pipe connection without having a supply air connection and two Abluftan ⁇ connections. Such an interface between actuator and positioner is in the directive
  • VDI / VDE 3847 specified.
  • the attachment of the positioner he ⁇ follows, for example, from the front of a vertical, provided with air ⁇ channels and fastening threads and a coding pin surface on the lantern of a linear actuator. Through the air ducts, both the supply of supply air and the connection with single or double-acting actuators takes place.
  • the interface is thus a tubeless connection of the Positioner suitable for the actuator.
  • the air ducts are open at the pneumatic interface of the control device.
  • supply air can escape from the supply air duct, on the other hand, the pressure in the working chambers of the drive changes to ambient pressure. This can disadvantageously lead to an adjustment of the actuator.
  • the escape of air supply could be verhin ⁇ changed, for example, by a toy in the supply air supply air valve is closed.
  • Such supply valves are usually arranged remotely in process equipment, since they also serve for the shutdown of a whole group of actuators.
  • the drive can in some cases be blocked with additional aids, for example blocks, while the positioner is being changed. Replacement of the positioner, however, would often involve stopping the process that takes place in the process plant.
  • the invention has for its object to provide an arrangement with an electropneumatic positioner and with a pneumatic drive, in which the replacement of the electropneumatic positioner can be performed comparatively one ⁇ fold.
  • the invention has the advantage that air ducts between the electro-pneumatic drive and positioner when needed, that is, for example, to replace the positioner, can be locked directly on site.
  • the drive maintains disassembly of the positioner in its last position when shut-off valves are arranged in all the air passages of the shut-off device, so that all shipska ⁇ ducts may be blocked prior to disassembly of the positioner.
  • An exchange of positioner is then no longer associated with a costly interruption of a process that runs on a process engineering system in which the assembly is installed.
  • no blocking of the drive with additional aids is more necessary.
  • shut-off valves are adjustable together by a single actuator.
  • the shut-off valves are designed as ball valves with a common axis of rotation.
  • Such shut-off valves are characterized by ei ⁇ NEN particularly low flow resistance when open to stand ⁇ because the air flow is straight through the air duct and at most small turbulences occur.
  • the ball valves can be advantageously provided in each case with a seal which is pressed by a spring against the switching ball, which is a spherical closing body. Occurs on the sealing surface wear, so the seal is pushed by the spring and it is thus reliably prevented that over the Radiodau ⁇ he the shut-off device in the sealing area creates a gap, which could lead to leakage currents.
  • such an embodiment leads to lower requirements with respect to the manufacturing tolerances and thus to lower manufacturing costs of the shut-off device.
  • the shut-off can advantageously be screwed on one hand to a corresponding interface of a drive and on the other hand on its gegenü ⁇ opposite side exactly this interface again to Ver ⁇ addition, so that the positioner can be mounted on this.
  • a "sandwich" - construction of the arrangement is advantageously obtained, in which the shut-off device between the pneumatic actuator and the electropneumatic positioner, each having to VDI / VDE 3847 compliant interfaces, is located.
  • FIG. 4 is a sectional view of a shut-off device
  • FIG. 5 shows an attachment of an adapter for linear actuators
  • Figure 6 is a perspective view of an adapter for
  • Figure 7 shows an attachment with adapter for quarter-turn actuators
  • Figure 8 is a perspective view of an adapter for
  • a new shut-off device 1 in "sandwich" construction between a first pneumatic interface 2 of an electropneumatic positioner 3 and a second pneumatic interface 4 of a pneumatic ⁇ tica drive 5 is arranged.
  • the shut-off device is provided with a third interface which corresponds to the first interface 2 and is connected thereto, and with a fourth interface which corresponds to the second interface 4 and is connected thereto.
  • the first, second, third and fourth interface have to ⁇ circuit pattern on according to the VDI / VDE 3847th It would thus be possible alternatively waiving the shut-off and associated with this advantages, the electropneumatic positioner 3 with its pneumatic interface 2 directly on the pneumatic
  • the shut-off device 1 which is located in the "sandwich"
  • FIG. 2 shows a perspective view of the shut-off device 1, in which the fourth interface 20, which serves for connection to the second interface (4 in FIG. 1) of the pneumatic drive, is clearly visible.
  • a supply air duct 21 ends as well as ⁇ two control air ducts 22 and 23, which are in the open state of ⁇ in the shut-off device 1 shut-off valves are passed straight through the shut-off device 1.
  • a bore 24 serves to receive a coding pin according to the guideline VDI / VDE 3847.
  • To fasten ⁇ tion of the shut-off device 1 on the second interface (4 in Figure 1) of the pneumatic drive (5 in Figure 1) serve two mounting screws 25 and 26th In the perspective view of the shut-off device 1 according to FIG.
  • a coding pin 31 is used for the exact positioning of the positioner, which has a corres ⁇ dierende bore.
  • threaded bores 32 and 33 can be screwed for mounting the positioner fixing screws that correspond to the mounting screws 25 and 26 in Figure 2.
  • the third interface 30 comprises a fourth interface (20 in Figure 2) aptchanli ⁇ ches connection pattern. Due to the configuration of the third and fourth interface of the shut-off device 1, a rotation of the shut-off device 1 by 180 ° is advantageously possible if required, for example if the actuating device 6 would otherwise be difficult to access.
  • the sectional view of Figure 4 shows the internal structure of
  • shut-off device 1 Three ball valves 40, 41 and 42, the switching balls are rotatable upon actuation of the actuator 6 about a common axis of rotation 48, serve for Absper ⁇ tion of the air channels 21, 22 and 23 through the course of the air ducts 21 to 23 is in advantageously allows a straight flow of air, which at most low vortex he testifies ⁇ . As a result, the air channels 21 to 23 have a comparatively low flow resistance.
  • the structure of the seals of the shut-off valves 40 to 42 are identical, so that it suffices to explain in the following only the seal structure of the shut-off valve 42 in more detail.
  • a sealing insert 43 which is displaceable perpendicular to the axis of rotation 48 of the actuating device 6, is provided on its side facing the switching ball 44 with a metallic sealing surface 45 corresponding to the shape of the switching ball 44, which is pressed against the switching ball 44 by a spring 46.
  • Ver ⁇ wear of the sealing surfaces of the sealing insert 43 is thus nachgeschoben, so that a gap formation and thus a due to wear resulting leakage can be largely avoided.
  • the seal is provided with a circumferential O-ring seal 47.
  • shut-off device is in a "sandwich" design between the electropneumatic
  • Positioner 3 and the pneumatic drive 5 arranged. Compared to an assembly of the positioner on the drive without intervening shut-off device so that the interface for mounting a displacement sensor on the electro-pneumatic positioner 3 is shifted by a distance corresponding to the thickness of the shut-off device. This distance can be bridged in a simple manner in a linear actuator by an adapter 50 shown in Figures 5 and 6. The height of the adapter 50 corresponds to the thickness of the shut-off device in "sandwich" design
  • the adapter 50 is fixed at the same point at which the transducer of the electropneumatic ⁇ rule positioner 3 would be attached without the use of a shut-off device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

L'invention concerne un ensemble comprenant un régulateur de position électropneumatique (3), un dispositif d'arrêt (1) et un entraînement pneumatique (5, 70). Le dispositif d'arrêt (1) est disposé dans une forme structurale « en sandwich » entre le régulateur de position (3) et l'entraînement (5, 70). Une soupape d'arrêt (40, 41, 42) permettant de fermer facilement le conduit d'air avant un démontage du régulateur de position (3) est montée dans au moins un des conduits d'air (21, 22, 23) traversant le dispositif d'arrêt (1) pour relier les raccords pneumatiques de façon linéaire. De préférence, une soupape d'arrêt (40, 41, 42) se situe dans chacun des conduits d'air (21, 22, 23) de manière à éviter simultanément une fuite de l'air amené et une modification de la position de l'entraînement pneumatique (5, 70). Par conséquent, il est possible de remplacer facilement un régulateur de position (3) dans une installation technique sans qu'il soit nécessaire pour cela d'interrompre fréquemment un processus se déroulant sur l'installation avec l'ensemble.
PCT/EP2011/055739 2010-04-12 2011-04-12 Ensemble comprenant un régulateur de position électropneumatique et un entraînement pneumatique et dispositif d'arrêt pour un tel ensemble WO2011128345A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010014629.3 2010-04-12
DE102010014629A DE102010014629A1 (de) 2010-04-12 2010-04-12 Anordnung mit einem elektropneumatischen Stellungsregler und mit einem pneumatischem Antrieb sowie Absperreinrichtung für eine derartige Anordnung

Publications (1)

Publication Number Publication Date
WO2011128345A1 true WO2011128345A1 (fr) 2011-10-20

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PCT/EP2011/055739 WO2011128345A1 (fr) 2010-04-12 2011-04-12 Ensemble comprenant un régulateur de position électropneumatique et un entraînement pneumatique et dispositif d'arrêt pour un tel ensemble

Country Status (2)

Country Link
DE (1) DE102010014629A1 (fr)
WO (1) WO2011128345A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105422951A (zh) * 2016-01-05 2016-03-23 北航温州研究院 一种圆形智能阀门定位器的气动单元装置
US10670054B2 (en) 2017-10-25 2020-06-02 Dresser, Llc Constructing valve positioners for hazardous areas
US11306748B2 (en) 2017-10-25 2022-04-19 Dresser, Llc Constructing valve positioners for hazardous areas

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014013391B4 (de) * 2014-09-11 2019-07-04 Festo Ag & Co. Kg Ventilbetätigungssystem
US10711907B2 (en) 2017-11-07 2020-07-14 Black Diamond Engineering, Inc. Line replaceable control valve positioner/controller system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6354327B1 (en) * 2000-07-31 2002-03-12 Virginia Valve Company Automatic position-control valve assembly
EP1632679A1 (fr) * 2004-09-06 2006-03-08 Siemens Aktiengesellschaft Controleur de position électropneumatique
WO2010129669A1 (fr) * 2009-05-08 2010-11-11 Siemens Industry, Inc. Appareil et procédé d'isolation de positionneur de valve de système de commande de fluide compressible

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29613138U1 (de) * 1996-07-29 1997-09-04 Siemens Ag Pneumatischer Regelantrieb sowie Verblockventil für einen derartigen pneumatischen Regelantrieb

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6354327B1 (en) * 2000-07-31 2002-03-12 Virginia Valve Company Automatic position-control valve assembly
EP1632679A1 (fr) * 2004-09-06 2006-03-08 Siemens Aktiengesellschaft Controleur de position électropneumatique
EP1632679B1 (fr) 2004-09-06 2008-03-26 Siemens Aktiengesellschaft Controleur de position électropneumatique
WO2010129669A1 (fr) * 2009-05-08 2010-11-11 Siemens Industry, Inc. Appareil et procédé d'isolation de positionneur de valve de système de commande de fluide compressible

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"VDI/VDE 3847 Blatt 2: Industrial process control valves - Interface between valve and positioner - Control valves with rotary actuator [Stellgeräte für die Prozessregelung - Schnittstelle zwischen Ventil und Stellungsregler - Stellgeräte mit Schwenkantrieb]", no. VDI/VDE 3847 Blatt 2, 1 September 2004 (2004-09-01), pages 1 - 4, XP008140879, Retrieved from the Internet <URL:http://www.vdi.de/401.0.html?&tx_vdirili_pi2[showUID]=91093> [retrieved on 20110810] *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105422951A (zh) * 2016-01-05 2016-03-23 北航温州研究院 一种圆形智能阀门定位器的气动单元装置
CN105422951B (zh) * 2016-01-05 2018-01-12 康赛特阀门集团有限公司 一种圆形智能阀门定位器的气动单元装置
US10670054B2 (en) 2017-10-25 2020-06-02 Dresser, Llc Constructing valve positioners for hazardous areas
US11306748B2 (en) 2017-10-25 2022-04-19 Dresser, Llc Constructing valve positioners for hazardous areas

Also Published As

Publication number Publication date
DE102010014629A1 (de) 2011-10-13

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