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EP3012453A2 - Hydraulic drive for a pressure tranducer - Google Patents

Hydraulic drive for a pressure tranducer Download PDF

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Publication number
EP3012453A2
EP3012453A2 EP15455007.3A EP15455007A EP3012453A2 EP 3012453 A2 EP3012453 A2 EP 3012453A2 EP 15455007 A EP15455007 A EP 15455007A EP 3012453 A2 EP3012453 A2 EP 3012453A2
Authority
EP
European Patent Office
Prior art keywords
pressure
working fluid
booster
pressure booster
hydraulic
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.)
Granted
Application number
EP15455007.3A
Other languages
German (de)
French (fr)
Other versions
EP3012453B1 (en
EP3012453A3 (en
Inventor
Franz Trieb
Rene Stühlinger
Rene Moderer
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.)
BFT GmbH
Original Assignee
BHDT GmbH
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Filing date
Publication date
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Application filed by BHDT GmbH filed Critical BHDT GmbH
Priority to PL15455007T priority Critical patent/PL3012453T3/en
Publication of EP3012453A2 publication Critical patent/EP3012453A2/en
Publication of EP3012453A3 publication Critical patent/EP3012453A3/en
Application granted granted Critical
Publication of EP3012453B1 publication Critical patent/EP3012453B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
    • F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
    • F04B9/109—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers
    • F04B9/111—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers with two mechanically connected pumping members
    • F04B9/113—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers with two mechanically connected pumping members reciprocating movement of the pumping members being obtained by a double-acting liquid 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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/149—Fluid interconnections, e.g. fluid connectors, passages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F3/00—Severing by means other than cutting; Apparatus therefor
    • B26F3/004—Severing by means other than cutting; Apparatus therefor by means of a fluid jet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B23/00—Pumping installations or systems
    • F04B23/02—Pumping installations or systems having reservoirs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B23/00—Pumping installations or systems
    • F04B23/04—Combinations of two or more pumps
    • F04B23/06—Combinations of two or more pumps the pumps being all of reciprocating positive-displacement type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/02—Stopping, starting, unloading or idling control
    • F04B49/022—Stopping, starting, unloading or idling control by means of pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/20—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by changing the driving speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/08—Cooling; Heating; Preventing freezing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F3/00—Severing by means other than cutting; Apparatus therefor
    • B26F3/004—Severing by means other than cutting; Apparatus therefor by means of a fluid jet
    • B26F2003/006—Severing by means other than cutting; Apparatus therefor by means of a fluid jet having a shutter or water jet deflector
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2201/00—Pump parameters
    • F04B2201/02—Piston parameters
    • F04B2201/0201—Position of the piston
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2205/00—Fluid parameters
    • F04B2205/06—Pressure in a (hydraulic) circuit
    • 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
    • F15B3/00—Intensifiers or fluid-pressure converters, e.g. pressure exchangers; Conveying pressure from one fluid system to another, without contact between the fluids

Definitions

  • the invention relates to a hydraulic drive for a pressure booster in a fluid high-pressure device, in particular for a plant for water jet cutting, consisting essentially of a hydraulic pump, which per revolution promotes a constant volume of working fluid, driven by an electric servo drive, operatively connected to a rule by means of measuring signals and / or switchable power supply.
  • Hydraulic actuators for pressure intensifiers which are driven by a controllable servo drive, are state of the art.
  • a hydraulic drive which comprises a constant-flow pump with a controllable servo drive, by which constant-flow pump by means of a switching block, a two plungers having pressure booster can be acted upon with working fluid.
  • Switching over a loading of the respective working piston surfaces with a working fluid takes place, as stated above, by means of a switching block or switching block.
  • a switching block for alternately acting on the working piston surfaces of the pressure booster on the one hand represents a high constructional effort and on the other hand can introduce shocks into the hydraulic high-pressure system, in particular when switching the pressurized working fluid, which thereby causes a superimposed mechanical peak stress of the parts in addition to the static base load.
  • the servo drive is formed bidirectionally, that is to say as a reversible motor, and such an actuation of the pressure booster can be reversed with working fluid, wherein a control of the control parameters and / or the switching parameters of the electric supply of the servo drive is checked for signals from measuring devices of pressure and / or pressure curve of the working fluid and / or pressure and / or pressure curve of the high-pressure fluid and / or based on the position of the plunger in the pressure booster.
  • a switching of a pressurized working fluid by means of a switching block according to the prior art, which can naturally cause shocks is thus circumvented and according to the invention each gentle pressure build-up in the working fluid at the start of a servo drive in milliseconds or small periods accomplished.
  • Another advantage is the simplicity of the mechanical design, the high reliability and economy of such high pressure equipment seen.
  • a particularly advantageous embodiment of the drive according to the invention for a pressure booster is achieved if at least one heat exchanger in the conducting means and / or in the vessel for adjusting the temperature of the working fluid in the region of the line of the working fluid between the hydraulic pump and pressure booster and / or in the area of provision in a vessel is positioned.
  • the conducting means or lines between the hydraulic pump and the pressure booster respectively have means for feeding working fluid into the system of the hydraulic drive, in each case a return of working fluid from the pressure booster to the hydraulic pump in this one can be set with respect to the environment low pressure.
  • optimum output conditions can be set in each case for the pressure side of the hydraulic drive or the pump.
  • Low overpressure values of from 0 to about 5 bar have proven useful, possibly to prevent gas formation.
  • Fig. 1 shows a fluid high-pressure device with a hydraulic drive 1 for a pressure booster second
  • a constant flow pump 11 is driven by a servo drive 12.
  • a controlled supply 15 of the servo motor 12 controls its rotation parameter and its shutdown.
  • a feed system 4 for working fluid has, for example, a feed pump with a drive motor 40, which is connected via check valves 41, 42 to the respective guide means between the hydraulic pump 11 and pressure booster 2.
  • Such a feed system can also have a heat exchanger 5, by means of which the temperature of the working fluid inriadsgefäß is einregelbar.
  • Fig. 2 essentially shows parts of a hydraulic drive 1 for a pressure booster 2 Fig. 1
  • a heat exchanger 51 for the working fluid can be arranged in the region of a supply vessel 10 and / or the conducting means from the hydraulic pump 11 to the pressure booster 2 each have a heat exchanger 52, 53.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

Die Erfindung betrifft einen Hydraulikantrieb für einen Druckübersetzer einer Hochdruckeinrichtung, insbesondere für eine Anlage zum Wasserstrahlschneiden, bestehend im Wesentlichen aus einer Hydraulikpumpe, welche je Umdrehung ein konstantes Volumen an Arbeitsfluid fördert, angetrieben von einem elektrischen Servoantrieb, wirkverbunden mit einer durch Messsignale regel-und/oder schaltbaren elektrischen Versorgung. Um einen Hydraulikantrieb für einen Druckübersetzer einer Fluid-Hochdruckeinrichtung zu schaffen, welcher geringe Druckschwankungen und Stöße im Hochdrucksystem verursacht und derart die Spitzen der Materialbelastungen verringert und höhere Sicherheit gewährleistet sowie die Anlagenkonzeption vereinfacht und wirtschaftliche Vorteile aufweist, ist erfindungsgemäß vorgesehen, dass der Servoantrieb für die Hochdruckpumpe bidirektional, also als reversibler Motor gebildet und derart eine Beaufschlagung des Druckübersetzers mit Arbeitsfluid umsteuerbar ist, wobei eine Steuerung der Regelungs-und/oder die Schaltparameter der elektrischen Versorgung des Servoantriebs auf Signale von Messeinrichtungen von Druck-und/oder Druckverlauf des Arbeitsfluids und/oder Druck-und Druckverlauf des Hochdruckfluids und/oder von der Position des Plungerkolbens im Druckübersetzer basiert.The invention relates to a hydraulic drive for a pressure booster of a high-pressure device, in particular for a system for water jet cutting, consisting essentially of a hydraulic pump, which promotes per revolution a constant volume of working fluid, driven by an electric servo drive, operatively connected to a by measuring signals rule and / or switchable electrical supply. In order to provide a hydraulic drive for a pressure booster of a fluid high-pressure device, which causes low pressure fluctuations and shocks in the high pressure system and thus reduces the peaks of material loads and ensures greater safety and simplifies the plant design and has economic advantages, the invention provides that the servo drive for High-pressure pump bidirectional, that is formed as a reversible motor and such a pressurization of the pressure booster with working fluid is reversible, with a control of the control and / or the switching parameters of the electrical supply of the servo drive to signals from measuring devices of pressure and / or pressure curve of the working fluid and / or pressure and pressure curve of the high-pressure fluid and / or based on the position of the plunger in the pressure booster.

Description

Die Erfindung betrifft einen Hydraulikantrieb für einen Druckübersetzer in einer Fluid-Hochdruckeinrichtung, insbesondere für eine Anlage zum Wasserstrahlschneiden, bestehend im Wesentlichen aus einer Hydraulikpumpe, welche je Umdrehung ein konstantes Volumen an Arbeitsfluid fördert, angetrieben von einem elektrischen Servoantrieb, wirkverbunden mit einer mittels Messsignalen regel-und/oder schaltbaren Stromversorgung.The invention relates to a hydraulic drive for a pressure booster in a fluid high-pressure device, in particular for a plant for water jet cutting, consisting essentially of a hydraulic pump, which per revolution promotes a constant volume of working fluid, driven by an electric servo drive, operatively connected to a rule by means of measuring signals and / or switchable power supply.

Hydaulikantriebe für Druckübersetzer, die mit einem regelbaren Servoantrieb angetrieben werden, sind Stand der Technik.Hydraulic actuators for pressure intensifiers, which are driven by a controllable servo drive, are state of the art.

In der AT 512 322 B1 ist beispielsweise ein Hydraulikantrieb offenbart, welcher eine Konstant-Förderstrom-Pumpe mit einem steuerbaren Servoantrieb, umfasst, durch welche Konstant-Förderstrom-Pumpe mittels eines Schaltblockes ein zwei Plungerkolben aufweisender Druckübersetzer mit Arbeitsfluid beaufschlagbar ist.In the AT 512 322 B1 For example, a hydraulic drive is disclosed, which comprises a constant-flow pump with a controllable servo drive, by which constant-flow pump by means of a switching block, a two plungers having pressure booster can be acted upon with working fluid.

Eine Umschaltung einer Beaufschlagung der jeweiligen Arbeitskolbenflächen mit einem Arbeitsfluid, welches in der Regel mit einem Druck von etwa 300 bar von der Pumpe bereitgestellt wird, erfolgt, wie oben dargelegt, mittels eines Schaltblockes bzw. Umschaltblockes.Switching over a loading of the respective working piston surfaces with a working fluid, which is usually provided by the pump at a pressure of about 300 bar, takes place, as stated above, by means of a switching block or switching block.

Ein Schaltblock zur abwechselnden Beaufschlagung der Arbeitskolbenflächen des Druckübersetzers stellt einerseits einen hohen bautechnischen Aufwand dar und kann andererseits insbesondere bei einer Umschaltung des unter Druck stehenden Arbeitsfluids Stöße in das hydraulische Hochdrucksystem einbringen, welche dadurch zusätzlich zur statischen Grundbelastung eine überlagerte mechanische Spitzenbeanspruchung der Teile bewirkt.A switching block for alternately acting on the working piston surfaces of the pressure booster on the one hand represents a high constructional effort and on the other hand can introduce shocks into the hydraulic high-pressure system, in particular when switching the pressurized working fluid, which thereby causes a superimposed mechanical peak stress of the parts in addition to the static base load.

Es ist nun Aufgabe der Erfindung, einen Hydraulikantrieb für einen Druckübersetzer einer Fluid-Hochdruckeinrichtung der eingangs genannten Art zu schaffen, welcher zu geringen Druckschwankungen im Hochdrucksystem führt, derart die Spitzen der Materialbelastungen verringert und höhere Sicherheit gewährleistet, sowie die Anlagenkonzeption vereinfacht und wirtschaftliche Vorteile aufweist.It is an object of the invention to provide a hydraulic drive for a pressure booster of a fluid high pressure device of the type mentioned, which leads to low pressure fluctuations in the high pressure system, such as the tips of Reduced material loads and ensures greater safety, as well as simplifies the plant design and has economic benefits.

Diese Aufgabe wird dadurch gelöst, dass der Servoantrieb bidirektional, also als reversibler Motor gebildet und derart eine Beaufschlagung des Druckübersetzers mit Arbeitsfluid umsteuerbar ist, wobei eine Steuerung der Regelungs-und/oder die Schaltparameter der elektrischen Versorgung des Servoantriebs auf Signale von Messeinrichtungen von Druck-und/oder Druckverlauf des Arbeitsfluids und/oder Druck-und/oder Druckverlauf des Hochdruckfluids und/oder von der Position des Plungerkolbens im Druckübersetzer basiert.This object is achieved in that the servo drive is formed bidirectionally, that is to say as a reversible motor, and such an actuation of the pressure booster can be reversed with working fluid, wherein a control of the control parameters and / or the switching parameters of the electric supply of the servo drive is checked for signals from measuring devices of pressure and / or pressure curve of the working fluid and / or pressure and / or pressure curve of the high-pressure fluid and / or based on the position of the plunger in the pressure booster.

Die mit der Erfindung erreichten Vorteile sind insbesondere dadurch gegeben, dass eine alternative Beaufschlagung der jeweiligen Arbeitskolbenfläche eines Druckübersetzers mit Arbeitsfluid direkt von einer Hydraulikpumpe mit Konstant-Volumenförderung je Umdrehung, bidirektional angetrieben von einem Servoantrieb, erfolgt.The advantages achieved by the invention are in particular given by the fact that an alternative loading of the respective working piston surface of a pressure booster with working fluid directly from a hydraulic pump with constant volume delivery per revolution, bidirectionally driven by a servo drive, takes place.

Eine Umschaltung eines unter Druck stehenden Arbeitsfluids mittels eines Schaltblockes gemäß dem Stand der Technik, welche naturgemäß Schläge verursachen kann, wird somit umgangen und erfindungsgemäß jeweils ein schonender Druckaufbau im Arbeitsfluid beim Anlauf eines Servoantriebs im Millisekunden oder geringen Zeitspannen bewerkstelligt.A switching of a pressurized working fluid by means of a switching block according to the prior art, which can naturally cause shocks is thus circumvented and according to the invention each gentle pressure build-up in the working fluid at the start of a servo drive in milliseconds or small periods accomplished.

Als weiterer Vorteil wird die Einfachheit der mechanischen Konzeption, die hohe Betriebssicherheit und Wirtschaftlichkeit derartiger Hochdruckeinrichtungen gesehen.Another advantage is the simplicity of the mechanical design, the high reliability and economy of such high pressure equipment seen.

Eine besonders vorteilhafte Ausführungsform des erfindungsgemäßen Antriebes für einen Druckübersetzer wird erreicht, wenn im Bereich der Leitung des Arbeitsfluids zwischen Hydraulikpumpe und Druckübersetzer und/oder im Bereich einer Bereitstellung in einem Gefäß mindestens ein Wärmetauscher im Leitmittel und/oder im Gefäß zur Einstellung der Temperatur des Arbeitsfluids positioniert ist.A particularly advantageous embodiment of the drive according to the invention for a pressure booster is achieved if at least one heat exchanger in the conducting means and / or in the vessel for adjusting the temperature of the working fluid in the region of the line of the working fluid between the hydraulic pump and pressure booster and / or in the area of provision in a vessel is positioned.

Derart können für einen schweren Betrieb eines Druckübersetzers gewünschte bzw. optimale Temperaturen des Arbeitsfluids eingeregelt werden.In this way, desired or optimum temperatures of the working fluid can be adjusted for heavy operation of a pressure booster.

Wenn gemäß der Erfindung die Leitmittel bzw. Leitungen zwischen Hydraulikpumpe und Druckübersetzer jeweils Mittel zur Einspeisung von Arbeitsfluid in das System des Hydraulikantriebes aufweisen, kann jeweils bei einer Rückführung von Arbeitsfluid vom Druckübersetzer zur Hydraulikpumpe in diesem ein gegenüber der Umgebung geringer Überdruck eingestellt werden. Dadurch sind jeweils für die Druckseite des Hydraulikantriebes bzw. der Pumpe optimale Ausgangsbedingungen einstellbar. Geringe Überdruckwerte von 0 bis etwa 5 bar haben sich, gegebenenfalls zur Verhinderung einer Gasbildung, bewährt.If, according to the invention, the conducting means or lines between the hydraulic pump and the pressure booster respectively have means for feeding working fluid into the system of the hydraulic drive, in each case a return of working fluid from the pressure booster to the hydraulic pump in this one can be set with respect to the environment low pressure. As a result, optimum output conditions can be set in each case for the pressure side of the hydraulic drive or the pump. Low overpressure values of from 0 to about 5 bar have proven useful, possibly to prevent gas formation.

Beispiele der Erfindung, welche lediglich einen Ausführungsweg derselben darstellen sind in den Zeichnungen gezeigt und werden nachfolgend beschrieben.Examples of the invention, which merely illustrate an embodiment thereof, are shown in the drawings and will be described below.

Es zeigen

  • Fig. 1 einen Hydraulikantrieb eines Druckübersetzers mit Mittel zur Einspeisung von Arbeitsfluid in das System
  • Fig. 2 einen Hydraulikantrieb für einen Druckübersetzer mit Wärmetauscher
Show it
  • Fig. 1 a hydraulic drive of a pressure booster with means for feeding working fluid into the system
  • Fig. 2 a hydraulic drive for a pressure booster with heat exchanger

Zur leichteren Zuordnung der Teile und Komponenten in den Darstellungen soll die nachfolgende Bezugszeichenliste dienen.

1
Hydraulikantrieb
10
Arbeitsfluid
11
Pumpe
12
elektrischer Servoantrieb
13
Niederdruck-Messwertgeber
14
Hochdruck-Messwertgeber
15
Elektrische Anspeisung und Steuerung
16
Plungerkolbenkolbenwegermittler
2
Druckübersetzer
21
Versorgungseinrichtung für Hochdruckfluid
3
Hochdruckleitung
31
Pulsationsdämpfer
32
Druckentlastungsventil
4
Einspeiseanlage von Arbeitsfluid
40
Antriebsmotor der Einspeisepumpe
41
Einspeisemittel mit Rückschlagventil
42
Einspeisemittel mit Rückschlagventil
5
Wärmetauscher in der Einspeiseanlage
51
Wärmetauscher im Bereitstellungsgefäß
52
Wärmetauscher im Leitmittel
53
Wärmetauscher im Leitmittel
For ease of assignment of the parts and components in the illustrations, the following list of reference numerals should serve.
1
hydraulic drive
10
working fluid
11
pump
12
electric servo drive
13
Low pressure transducer
14
High-pressure transducer
15
Electrical supply and control
16
Plungerkolbenkolbenwegermittler
2
Pressure intensifier
21
Supply device for high-pressure fluid
3
High-pressure line
31
pulsation dampers
32
Pressure relief valve
4
Feed system of working fluid
40
Drive motor of the feed pump
41
Feed with check valve
42
Feed with check valve
5
Heat exchanger in the feed system
51
Heat exchanger in the supply vessel
52
Heat exchanger in the conducting agent
53
Heat exchanger in the conducting agent

Fig. 1 zeigt eine Fluid-Hochdruckeinrichtung mit einem Hydraulikantrieb 1 für einen Druckübersetzer 2. Fig. 1 shows a fluid high-pressure device with a hydraulic drive 1 for a pressure booster second

Eine Konstant-Förderstrom-Pumpe 11 ist von einem Servoantrieb 12 antreibbar. Eine gesteuerte Anspeisung 15 des Servomotors 12 regelt dessen Rotationsparameter und dessen Stillsetzung.A constant flow pump 11 is driven by a servo drive 12. A controlled supply 15 of the servo motor 12 controls its rotation parameter and its shutdown.

Unter Verwendung von Niederdruck-Messwertgeber 13 und/oder Hochdruck-Messwertgeber 14 und/oder Kolbenwegermittler 16 vom Druckübersetzer 2 wird der Motorbetrieb und derart die Förderung von Arbeitsfluid der Pumpe 11 und somit eine Beaufschlagung der jeweiligen Arbeitskolbenfläche des Druckübersetzers 2 programmgesteuert.Using low-pressure transducer 13 and / or high-pressure transducer 14 and / or Kolbenwegermittler 16 from the pressure booster 2, the engine operation and thus the promotion of working fluid of the pump 11 and thus an application of the respective working piston surface of the pressure booster 2 programmatically.

Eine Einspeiseanlage 4 für Arbeitsfluid weist beispielsweise eine Einspeisepumpe mit einem Antriebsmotor 40 auf, welche über Rückschlagventile 41, 42 mit den jeweiligen Leitmitteln zwischen der Hydraulikpumpe 11 und Druckübersetzer 2 verbunden ist.A feed system 4 for working fluid has, for example, a feed pump with a drive motor 40, which is connected via check valves 41, 42 to the respective guide means between the hydraulic pump 11 and pressure booster 2.

Eine derartige Einspeiseanlage kann auch einen Wärmetauscher 5 aufweisen, mittels welchen die Temperatur des Arbeitsfluids im Bereitstellungsgefäß einregelbar ist.Such a feed system can also have a heat exchanger 5, by means of which the temperature of the working fluid in Einstellungsgefäß is einregelbar.

Fig. 2 zeigt im Wesentlichen Teile eines Hydraulikantriebes 1 für einen Druckübersetzer 2 nach Fig. 1 Fig. 2 essentially shows parts of a hydraulic drive 1 for a pressure booster 2 Fig. 1

Allerdings ist für eine erfindungsgemäße Kühlung des Arbeitsfluids eine unterschiedliche Ausführungsform dargestellt.However, a different embodiment is shown for cooling the working fluid according to the invention.

Ein Wärmetauscher 51 für das Arbeitsfluid kann im Bereich eines Bereitstellungsgefäßes 10 angeordnet sein und/oder die Leitmittel von der Hydraulikpumpe 11 zum Druckübersetzer 2 weisen jeweils einen Wärmetauscher 52, 53 auf.A heat exchanger 51 for the working fluid can be arranged in the region of a supply vessel 10 and / or the conducting means from the hydraulic pump 11 to the pressure booster 2 each have a heat exchanger 52, 53.

Claims (3)

Hydraulikantrieb (1) für einen Druckübersetzer (2) einer Hochdruckeinrichtung, insbesondere für eine Anlage zum Wasserstrahlschneiden, bestehend im Wesentlichen aus einer Hydraulikpumpe (11), welche je Umdrehung ein konstantes Volumen an Arbeitsfluid fördert, angetrieben von einem elektrischen Servoantrieb (12), wirkverbunden mit einer durch Messsignale regel- und/oder schaltbaren elektrischen Versorgung (15), dadurch gekennzeichnet, dass der Servoantrieb (12) für die Hydraulikpumpe (11) bidirektional, also als reversibler Motor gebildet und derart eine Beaufschlagung des Druckübersetzers (2) mit Arbeitsfluid umsteuerbar ist, wobei eine Steuerung der Regelungs- und/oder die Schaltparameter der elektrischen Versorgung (15) des Servoantriebs (12) auf Signale von Messeinrichtungen (13,14,16) von Druck- und/oder Druckverlauf des Arbeitsfluidsund/oder Druck-und/oder Druckverlauf des Hochdruckfluids und/oder von der Position des Plungerkolbens im Druckübersetzer (2) basiert.Hydraulic drive (1) for a pressure booster (2) of a high-pressure device, in particular for a system for water jet cutting, consisting essentially of a hydraulic pump (11), which per revolution promotes a constant volume of working fluid, driven by an electric servo drive (12), operatively connected with a by measuring signals regulated and / or switchable electrical supply (15), characterized in that the servo drive (12) for the hydraulic pump (11) bidirectional, so formed as a reversible motor and such a pressurization of the pressure booster (2) reversible with working fluid is, wherein a control of the control and / or the switching parameters of the electrical supply (15) of the servo drive (12) to signals from measuring devices (13,14,16) of pressure and / or pressure curve of the working fluid and / or pressure and / or or pressure curve of the high-pressure fluid and / or the position of the plunger in the pressure booster (2) based. Hydraulikantrieb nach Anspruch 1, dadurch gekennzeichnet, dass im Bereich der Leitung des Arbeitsfluids zwischen Hydraulikpumpe (11) und Druckübersetzer (2) und/oder im Bereich einer Bereitstellung desselben in einem Gefäß (10) mindestens ein Wärmetauscher (W) (51,52,53) im Leitmittel und/oder im Gefäß (10) zur Einstellung der Temperatur des Arbeitsfluids positioniert ist.Hydraulic drive according to claim 1, characterized in that in the region of the line of the working fluid between the hydraulic pump (11) and pressure booster (2) and / or in the region of providing the same in a vessel (10) at least one heat exchanger (W) (51,52, 53) is positioned in the conducting means and / or in the vessel (10) for adjusting the temperature of the working fluid. Hydraulikantrieb nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Leitmittel von Arbeitsfluid zwischen Hydraulikpumpe (11) und Druckübersetzer (2) jeweils Mittel (41,42) zur Einspeisung von Arbeitsfluid in das System des Hydraulikantriebes (1) aufweisen.Hydraulic drive according to claim 1 or 2, characterized in that the guide means of working fluid between the hydraulic pump (11) and pressure booster (2) each have means (41,42) for feeding working fluid into the system of the hydraulic drive (1).
EP15455007.3A 2014-10-20 2015-10-02 Hydraulic drive for a pressure transducer Active EP3012453B1 (en)

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AT515937B1 (en) 2016-01-15
PL3012453T3 (en) 2022-07-11
CA2905976A1 (en) 2016-04-20
AT515937A4 (en) 2016-01-15
EP3012453B1 (en) 2022-02-16
RU2618744C2 (en) 2017-05-11
RU2015144390A (en) 2017-04-21
US20160108939A1 (en) 2016-04-21
EP3012453A3 (en) 2016-06-15
CA2905976C (en) 2017-09-12
KR20160046303A (en) 2016-04-28

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