WO2002091097A1 - Dispositif pour conduire un fluide sous pression dans un ensemble consommateur - Google Patents

Dispositif pour conduire un fluide sous pression dans un ensemble consommateur Download PDF

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Publication number
WO2002091097A1
WO2002091097A1 PCT/CH2001/000284 CH0100284W WO02091097A1 WO 2002091097 A1 WO2002091097 A1 WO 2002091097A1 CH 0100284 W CH0100284 W CH 0100284W WO 02091097 A1 WO02091097 A1 WO 02091097A1
Authority
WO
WIPO (PCT)
Prior art keywords
channel
pressure
valve
throttle
shut
Prior art date
Application number
PCT/CH2001/000284
Other languages
German (de)
English (en)
Inventor
Reto Seitz
Original Assignee
Valevo 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 Valevo Ag filed Critical Valevo Ag
Priority to EP01925271A priority Critical patent/EP1386204A1/fr
Priority to PCT/CH2001/000284 priority patent/WO2002091097A1/fr
Publication of WO2002091097A1 publication Critical patent/WO2002091097A1/fr

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/04—Control of fluid pressure without auxiliary power
    • G05D16/10—Control of fluid pressure without auxiliary power the sensing element being a piston or plunger
    • 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
    • G05D16/2093—Control of fluid pressure characterised by the use of electric means with combination of electric and non-electric auxiliary power
    • G05D16/2097—Control of fluid pressure characterised by the use of electric means with combination of electric and non-electric auxiliary power using pistons within the main valve

Definitions

  • the invention relates to a device for supplying a pressurized fluid to a consumer unit, with an ⁇ bsperrororgan connectable to a feed unit, which can be adjusted between a closed position and an open position via an actuating device.
  • Rotary actuator actuated ball valve is controlled.
  • the ball valve In many areas of application, especially in systems with high operating pressures and / or with relatively large opening cross-sections, the ball valve must be controlled by hand or, in other versions, gradually adjusted from the closed position to the open position using a correspondingly controllable motor to prevent the formation of a impermissibly high flow velocity at the valve outlet, and thus to prevent the occurrence of pressure surges.
  • the invention has for its object to provide an improved device of the type mentioned, in which the disadvantages mentioned above do not occur,
  • the device designed according to the invention proves to be particularly advantageous in systems for conveying gaseous fluids.
  • a corresponding device can also advantageously be used in systems for conveying liquid media.
  • FIG. 1 is a diagram of a one according to the invention
  • Device comprising a device for feeding a fluid into a consumer
  • FIG. 2 shows a detail of a first embodiment of the device according to the invention according to FIG. 1 in a longitudinal section
  • FIG. 3 shows a second embodiment of the device according to the invention in a longitudinal section
  • FIG. 4 shows a modification of the embodiment according to FIG. 2 in a longitudinal section
  • FIG. 5 shows a detail V of the embodiment according to FIG. 4 in a larger representation
  • FIG. 6 shows a further modification of the embodiment according to FIG. 2 in a longitudinal section
  • the supply unit 1 comprises a supply unit 1 for providing a gaseous fluid compressed to a specific storage pressure and a device 2 for supplying the fluid to a consumer unit 3.
  • the supply device 2 contains a shut-off device 4 connected to the supply unit 1 and this via a Connection piece 5 downstream throttle valve 6, which can be connected to the consumer unit 3 via a feed line 7 with a coupling device 8.
  • the shut-off device 4 is connected via an actuating device 9
  • the shut-off device 4 can be a ball valve that can be operated manually, via a pedal, via a motor, hydraulically or pneumatically.
  • a seat valve which can be actuated by means of an electromagnet.
  • the throttle valve 6 can be connected to the feed unit 1 and connected upstream of the shut-off element 4, which is accordingly connected to the feed line 7.
  • the valve body 10 which has an inlet channel 12, an outlet channel 13 and a bore 14, consists essentially of two housing parts 15 and 16, which are connected by screws 17, the closure part 11, which cooperates with a valve seat 20 delimiting the mouth 19 of the inlet channel 12, is held adjustable in the bore 14 by means of an elastic support arrangement, according to the illustration a spring arrangement 18, between a closed position and an open position.
  • an elastic support arrangement according to the illustration a spring arrangement 18, between a closed position and an open position.
  • a gas spring or the like can also be used as a support arrangement.
  • the inlet channel 12 contains a threaded connection for the connecting piece 5, which is connected at the other end, not shown, to the outlet of the shut-off element 4, the outlet channel 13 is provided with a corresponding one
  • the inlet channel 12 and the outlet channel 13 can also be connected to a distribution unit via correspondingly arranged flange connections, the further flange connections for the inlet and outlet of the shut-off element 4 and for the connection to the Feed unit 1 and can have with the feed line 7.
  • the closure part 11 is a two-stage piston with a first piston section 21, which has a first pressure surface 23 facing the valve seat 20, and a second, stepped piston section 22, which has a correspondingly smaller second pressure surface 24 facing away from the first pressure surface 23.
  • the piston also contains a through bore 25 penetrating it in the direction of its longitudinal axis L and open towards the mouth 19 of the inlet channel 12, with a section for receiving the spring arrangement 18 supported on the valve body 10.
  • the first piston section 21 is provided with a centrally arranged one for contacting the Valve seat 20 certain graduated end portion 26 executed.
  • the first pressure surface 23 essentially consists of a central partial surface 27 formed on this end part 26 and a peripheral partial surface 28 which is set back relative to this and surrounds the end part 26.
  • the first piston section 21 is guided in the lower housing part 15 according to FIG. 2 with a seal 31 in a first section 14a of the bore 14. With the valve seat 20, the first pressure surface 23 delimits a first, lower pressure chamber which is open towards the outlet channel 13
  • the second piston section 22 is guided in the upper housing part 16 with a seal 32 in a correspondingly graduated second section 14b of the bore 14.
  • the second pressure surface 24 delimits a second, upper pressure chamber
  • Pressure chamber 34 is connected to the inlet channel 12 via a connecting channel, not shown, formed in the wall of the valve body 10.
  • the through hole 25 can be omitted.
  • the fluid present in the feed unit 1 is oxygen or a gas fuel which has a storage pressure of, for. B. can be compressed to 350 bar.
  • Closure part 11 of the downstream throttle valve 6 is held on the valve seat 20 in the illustrated closed position by the spring arrangement 18 biased to a specific spring force.
  • the gas flows with an inlet pressure corresponding to the storage pressure via the connecting piece 5 into the inlet channel 12 of the throttle valve 6 and through the open through-bore 25 into the second pressure chamber 34.
  • the closure part 11 is accordingly opened by an additional closing force from the to the second
  • the pressure surfaces 23 and 24 of the closure part 11 are coordinated with one another such that when the limit value of the outlet pressure is reached, the pressure force exerted on the first pressure surface 23 corresponds to the closing force exerted on the second pressure surface 24 by the input pressure. If the reduced outlet pressure rises above this limit value, the closing part 11 is lifted from the closed position restricting the flow by the correspondingly increased pressure force, the full cross section of the valve seat 20 being released and the inlet pressure of the gas thus also acting on the first pressure surface 23. Accordingly, the closure part 11 is automatically adjusted against the spring arrangement 18 with a lifting force determined by the difference between the pressure surfaces 23 and 24, in which the gas with the outlet pressure in the consumer unit 3, which now increases gradually to the level of the full inlet pressure is fed,
  • the shut-off device 4 is closed, the inlet pressure of the gas being reduced accordingly. If the outlet pressure drops below the predetermined limit value, the closing part 11 is automatically reset by the spring arrangement 18 into the closed position which throttles the flow of the gas.
  • the device described allows in a simple manner a safe, automatic control of the flow of the gas to be fed into the consumer unit 3, the throttle valve 6 preventing the creation of impermissible pressure surges and thus avoiding excessive heating of the gas and the installation.
  • An essential advantage of this device is that the throttle valve 6 can be combined with shut-off elements 4 of any type, in particular with valves with short opening times that are common in plant construction.
  • a throttle valve 40 designed according to the invention and a seat valve 41 serving as a shut-off element are arranged in a common valve body 42 along a longitudinal axis L.
  • the valve body 42 essentially consists of a first housing part 43, a second housing part 44 screwed to it and a cover 45 screwed to the first housing part 43.
  • the throttle valve 40 is formed in the housing parts 43 and 44, which is intended for guiding the closure part 11 , contain stepped bore 14, the first housing part 43 contains an inlet duct 46 and the outlet duct 13 for the gas to be conveyed as well as a housing chamber 47 intended for receiving the seat valve 41, which is closed by the cover 45 and which is connected via a through duct 48 to the in the bore 14 formed valve seat 20 is connected.
  • the inlet duct 46 which in this embodiment opens into the housing chamber 47, can be connected to the feed unit 1 via a connecting line or, as assumed in the present example, directly via a coupling element 50,
  • the seat valve 41 which is of a known design, contains a piston 52, which cooperates with a valve seat 54 delimiting the through-channel 48, and which is held adjustable between a closed position and an open position by a prestressed spring element 53 and by means of a solenoid valve 55 attached to the second housing part 44 ,
  • the piston 52 essentially consists of a head part 57 guided in the housing chamber 47 and a shaft 58 which is guided in a bore 56 arranged in the cover 45.
  • the head part 57 has a stepped end portion 59 that can be placed on the valve seat 54 and an annular surface 65 surrounding it and delimits in the housing chamber 47 a first annular space 60 facing the throttle valve 40, which is open towards the inlet channel 46, and a second annular space 61 facing away from the throttle valve 40
  • the shaft 58 delimits a pressure chamber 62 facing away from the throttle valve 40 in the bore 56.
  • the annular spaces 60, 61 and the pressure chamber 62 are communicatively connected to one another in a known manner via bores 63 and 64 arranged in the head part 57 and in the shaft 58,
  • the executed in a known type solenoid valve 55 includes a 42 screwed to the second housing part 44 of the valve body, surrounded by a magnet coil 70 housing 71, a movably arranged therein magnetizable armature 72 and a closing body 73, which is arranged in a Ge 'casing part 44 hole 74 and is movably guided in the housing 71 in the direction of the longitudinal axis L.
  • the closing body 73 limits in the
  • the closing body 73 acts against a valve seat 75 which delimits a passage 76 to the second pressure chamber 34 of the throttle valve 40 in the third annular space 66.
  • the closing body 73 also has a longitudinal bore 77 which is open towards the passage 76 and opens into a conical seat 78 which is intended to interact with the armature 72.
  • the closing body 73 is held on the valve seat 75 by the armature 72 in the closed position shown.
  • the piston 52 of the seat valve 41 is held on the valve seat 54 by the spring element 53 in the closed position shown.
  • the piston 52 of the seat valve 41 is held on the valve seat 54 by the spring element 53 in the closed position shown.
  • the piston 52 is pressed against the valve seat 54 by the storage pressure of the gas with a compressive force determined by the difference between the cross-sectional area and the annular surface 65 of the head part 57.
  • the same accumulator pressure acts in the annular spaces 66, 67 connected via the connecting channel 69 and in the pressure space 68 of the solenoid valve 55.
  • the closing body 73 is determined with a compressive force determined by the difference between the largest cross-sectional area and the annular area of the closing body 73 delimiting the third annular space 66 pressed against the valve seat 75.
  • FIG. 4 shows a throttle valve 80 in which the inlet duct 12 and the outlet duct 13 are connected by a throttle duct 81 which, in contrast to the embodiments described above, is formed in the valve body 10,
  • the throttle channel 81 is formed by two interconnected bores 82 and 83 arranged in the housing part 15.
  • the housing part 15 can contain a means for influencing the flow-through cross section of the throttle duct 81.
  • an adjusting screw 85 arranged in the bore 83 can be provided, which has a conical seat 84 that can be adjusted against a shoulder of the bore 83.
  • a finely adjustable throttling of the fluid flow can be achieved through bores with a relatively large diameter.
  • the device according to the invention can also be designed with two or more throttle valves 6 or 80, which are connected in series with the ⁇ bsperrorgan 4, which allow a corresponding multi-stage increase in the outlet pressure to the level of the storage pressure of the fluid to be conveyed.
  • two throttle valves 6 can be formed in a common valve body 36, which consists of two housing parts 37 and 38.
  • the output is of the first throttle valve 6 connected through a connecting channel 39 to the input of the second throttle valve 6.
  • a reduced, gradually increasing outlet pressure is built up in the manner already described, which is gradually increased to the level of the inlet pressure depending on a predetermined first limit value of, for example, 70-80% of the inlet pressure.
  • a reduced, gradually increasing outlet pressure is also built up at the outlet of the second throttle valve 6 until it corresponds to a predetermined second limit value of, for example, 90% of the inlet pressure of the first throttle valve 6. If the outlet pressure of the fluid exceeds this limit value, the closure part 11 of the second throttle valve 6 is adjusted to the open position, so that the fluid is fed into the consumer unit 3 with the outlet pressure now increasing in steps to the level of the inlet pressure,

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Safety Valves (AREA)

Abstract

L'invention concerne un dispositif qui comprend un organe de blocage (4) qui peut être raccordé à une unité d'alimentation (1) et déplacé par l'intermédiaire d'un dispositif d'actionnement (9), ainsi qu'une soupape d'étranglement (6) qui est montée en aval dudit organe de blocage et peut être raccordée à un ensemble consommateur (3). Cette soupape d'étranglement (6) comporte un siège de soupape (20) disposé entre un canal d'entrée (12) et un canal de sortie (13), une partie de fermeture (11) qui coopère avec ce siège de soupape au moyen d'un dispositif d'appui (18) élastique, et au moins un canal à étranglement (30) qui communique avec le canal d'entrée (12) et avec le canal de sortie (13). La partie de fermeture (11) est maintenue de façon à se déplacer automatiquement, en fonction d'une valeur limite prédéterminée d'une pression du fluide réduite se renforçant peu à peu dans le canal de sortie (13), entre une position de fermeture, dans laquelle le passage du fluide est étranglé, et une position d'ouverture. La pression de sortie du fluide augmente ensuite de façon continue d'une fraction de la valeur de la pression d'entrée, et lorsque la valeur limite est dépassée, jusqu'au niveau de la pression d'entrée, ce qui empêche des à-coups de pression non admissibles.
PCT/CH2001/000284 2001-05-09 2001-05-09 Dispositif pour conduire un fluide sous pression dans un ensemble consommateur WO2002091097A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP01925271A EP1386204A1 (fr) 2001-05-09 2001-05-09 Dispositif pour conduire un fluide sous pression dans un ensemble consommateur
PCT/CH2001/000284 WO2002091097A1 (fr) 2001-05-09 2001-05-09 Dispositif pour conduire un fluide sous pression dans un ensemble consommateur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CH2001/000284 WO2002091097A1 (fr) 2001-05-09 2001-05-09 Dispositif pour conduire un fluide sous pression dans un ensemble consommateur

Publications (1)

Publication Number Publication Date
WO2002091097A1 true WO2002091097A1 (fr) 2002-11-14

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ID=4358204

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH2001/000284 WO2002091097A1 (fr) 2001-05-09 2001-05-09 Dispositif pour conduire un fluide sous pression dans un ensemble consommateur

Country Status (2)

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EP (1) EP1386204A1 (fr)
WO (1) WO2002091097A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3862738A (en) * 1972-04-17 1975-01-28 Hydromatik Gmbh Two-way valve of the seated type
FR2428777A1 (fr) * 1978-06-13 1980-01-11 Poclain Sa Clapet a ouverture commandee et progressive
DE4030159A1 (de) * 1990-09-24 1992-03-26 Teves Gmbh Alfred Stromregelventil

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3862738A (en) * 1972-04-17 1975-01-28 Hydromatik Gmbh Two-way valve of the seated type
FR2428777A1 (fr) * 1978-06-13 1980-01-11 Poclain Sa Clapet a ouverture commandee et progressive
DE4030159A1 (de) * 1990-09-24 1992-03-26 Teves Gmbh Alfred Stromregelventil

Also Published As

Publication number Publication date
EP1386204A1 (fr) 2004-02-04

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