EP0857256A1 - Convertisseur pneumo-hydraulique pour accumuler l'energie - Google Patents

Convertisseur pneumo-hydraulique pour accumuler l'energie

Info

Publication number
EP0857256A1
EP0857256A1 EP96934298A EP96934298A EP0857256A1 EP 0857256 A1 EP0857256 A1 EP 0857256A1 EP 96934298 A EP96934298 A EP 96934298A EP 96934298 A EP96934298 A EP 96934298A EP 0857256 A1 EP0857256 A1 EP 0857256A1
Authority
EP
European Patent Office
Prior art keywords
pneumo
spaces
pressure
hydraulic converter
converter according
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
EP96934298A
Other languages
German (de)
English (en)
Other versions
EP0857256B1 (fr
Inventor
Ivan Cyphelly
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0857256A1 publication Critical patent/EP0857256A1/fr
Application granted granted Critical
Publication of EP0857256B1 publication Critical patent/EP0857256B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/06—Servomotor systems without provision for follow-up action; Circuits therefor involving features specific to the use of a compressible medium, e.g. air, steam
    • F15B11/072—Combined pneumatic-hydraulic systems
    • F15B11/0725—Combined pneumatic-hydraulic systems with the driving energy being derived from a pneumatic system, a subsequent hydraulic system displacing or controlling the output element
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F5/00—Elements specially adapted for movement
    • 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
    • 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
    • F15B2211/20546—Type of pump variable capacity
    • 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
    • F15B2211/20569—Type of pump capable of working as pump and 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
    • F15B2211/21—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge
    • F15B2211/214—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge the pressure sources being hydrotransformers
    • 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
    • F15B2211/21—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge
    • F15B2211/216—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge the pressure sources being pneumatic-to-hydraulic converters
    • 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
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
    • 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
    • F15B2211/625—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
    • F15B2211/80—Other types of control related to particular problems or conditions
    • F15B2211/88—Control measures for saving energy

Definitions

  • a pneumo-hydraulic converter with a reciprocating double piston which connects a compressed air reservoir with a hydraulic circuit with the best possible efficiency, such that
  • Energy in the storage f Hessen can (charging) or can be drawn from the storage (discharging).
  • the purpose of the invention is to achieve good efficiency while increasing the clock frequency.
  • This heat exchanger can either run with the reciprocating piston set or remain fixed.
  • the moving heat exchanger requires about a third fewer sliding seals and, in addition, the tubular bundle significantly increases the kink and buckling resistance of the piston set, the description will be limited to the representation of the converter with the moving heat exchanger: the desired increase in the clock frequency forces a radical Dead space-reducing workspace arrangement which causes high buckling forces, which leads to buckling strength extremely important constructive factor, which must also be taken into account in the arrangement of the valves.
  • the valve sets each side must - consisting j in each case from high-pressure valve, exchange valve and low-pressure valve forced to be controlled, said low pressure valve may be coupled in their movement under certain conditions, exchange and.
  • the design of these valves must also meet the topological requirements of the heat exchanger
  • FIG. 1 shows a longitudinal section through the axis of the four cylindrical
  • FIG. 2 shows a section transverse to the axis of FIG. l through the high-pressure chamber and through the heat exchanger tube bundle, and finally
  • FIG. 3 illustrates the same section as FIG. 2, but with bridged bundle tubes.
  • the converter in its high-pressure version consists of three coaxial cylindrical tube sections of approximately the same length, the upstream pressure tube (1) surrounding the upstream pressure piston (2) having a much larger diameter than the two high-pressure chamber tubes (3a / 3b) arranged symmetrically with respect to the upstream pressure tube (1) ), which also contain the longitudinally symmetrical high pressure pistons Ua / 4b). Since the moving parts as well as the fixed parts are mirror-symmetrical with respect to their long center, the upstream pressure pipe (1) is connected via valve flanges (5a / 5b) to the two screwed-in high-pressure chamber pipes (3a / 3b), each of which is attached by means of screw caps ( 6a / 6b ) attached connection cover (7a / 7b) must be completed.
  • the outside world communicates with the pre-pressure spaces (lla / llb) via the low pressure valves (13a / 13b) and the air reservoir (K) can the air high pressure spaces (lOa / lOb) via the high pressure valves (15a / 15b) act on, which are supplied from the air reservoir (U) through the supply lines (I6a / l6b) via the connections (17a / 17b).
  • FIG. 1 A possible configuration of the pilot control by means of hydraulic loading is shown in FIG. 1 shown on the high pressure valves (15a / 15b), the pressure chambers (I8a / 18b) each from the one
  • Pressure source (19) connected electrical 2-way
  • Pilot valves (20a / 20b) are either released or pressurized, thereby moving the valve pistons (21a / 21b), which are connected to the high-pressure valves (15a / l5b) via the rods (22a / 22b) with nuts (23a / 23b) .
  • Similar devices can also be provided for the exchange valves (12a / 12b) and the low pressure valves (13a / 13b), only their actuating rods (24a / 24b) and (25a / 25b) being shown here.
  • a wiring option of the converter is shown, with supply lines (27a / 27b) to a -V-way valve (28), which is a variable hydrostatic unit (29) with a flywheel ( 30 ) and an electric motor / generator (31) acted upon.
  • the exchange circuit begins with the feed pump (32), which the exchange liquid through the external Insert exchanger (33) via the connection (34b) in the connection cover (7b) and via the feed pipe (35b) into the pipe rod (8). Since this pipe rod (8) is closed in the plane of the pre-pressure piston (2) by a conical stopper (36), the exchange liquid is pressed back through the annular space between the feed pipe (35b) and the pipe rod (8) to the high-pressure piston, in which
  • Radial bores (37b) are fed to the exchanger bundle tubes (38), thus also the high-pressure piston (4a) - via the radial bores (37a) the tube rod (8) is in turn reached; the circuit back to the feed pump (32) is closed via the feed pipe (35a) and the connection (34a).
  • the exchanger seals (41a / 41b) and (42a / 42b) are loaded with a full pressure difference throughout the piston movement: this is the actual technological challenge of the concept, especially if the tube bundle design is designed to bypass the bundle tube (43) in order to increase the kink resistance and heat transfer (43). 3 provides. Only the sliding seal ( 44) of the upstream pressure piston (2) is spared from the high pressures, since it is only exposed to the upstream pressure. The remaining seals, not specified, are only subjected to static or short-stroke loads.
  • topological configuration shown is part of the invention and fits particularly well with the described, repetitive thermodynamic process, especially since the pressure chamber and exchanger arrangement selected enables the dead space-free shuttle valve design, with which the concept of conversion with the highest possible Efficiency stands and falls.
  • the 4-way changeover valve (28) must either be automatically synchronized (by the pressure peak at the stop) or by means of a proximity switch with the converter stroke; for simple compression tasks (e.g. for cooling circuits), the compressor can also be designed without a pre-pressure cylinder: the shell-and-tube heat exchanger can be either fixed or rotating, since there are no buckling forces.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Thermal Sciences (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Reciprocating Pumps (AREA)
  • Hydrogen, Water And Hydrids (AREA)
EP96934298A 1995-11-03 1996-11-01 Convertisseur pneumo-hydraulique pour accumuler l'energie Expired - Lifetime EP0857256B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH311495 1995-11-03
CH3114/95 1995-11-03
PCT/CH1996/000386 WO1997017546A1 (fr) 1995-11-03 1996-11-01 Convertisseur pneumo-hydraulique pour accumuler l'energie

Publications (2)

Publication Number Publication Date
EP0857256A1 true EP0857256A1 (fr) 1998-08-12
EP0857256B1 EP0857256B1 (fr) 1999-03-31

Family

ID=4248922

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96934298A Expired - Lifetime EP0857256B1 (fr) 1995-11-03 1996-11-01 Convertisseur pneumo-hydraulique pour accumuler l'energie

Country Status (8)

Country Link
US (1) US6145311A (fr)
EP (1) EP0857256B1 (fr)
JP (1) JP3194047B2 (fr)
AT (1) ATE178389T1 (fr)
CA (1) CA2236746A1 (fr)
DE (1) DE59601569D1 (fr)
OA (1) OA10682A (fr)
WO (1) WO1997017546A1 (fr)

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CN102135080A (zh) * 2011-03-02 2011-07-27 浙江杭钻机械制造股份有限公司 一种转阀换向的液压两缸单作用往复泵驱动系统

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Publication number Priority date Publication date Assignee Title
CN102135080A (zh) * 2011-03-02 2011-07-27 浙江杭钻机械制造股份有限公司 一种转阀换向的液压两缸单作用往复泵驱动系统

Also Published As

Publication number Publication date
JPH11501387A (ja) 1999-02-02
CA2236746A1 (fr) 1997-05-15
WO1997017546A1 (fr) 1997-05-15
ATE178389T1 (de) 1999-04-15
US6145311A (en) 2000-11-14
DE59601569D1 (de) 1999-05-06
OA10682A (en) 2001-05-03
EP0857256B1 (fr) 1999-03-31
JP3194047B2 (ja) 2001-07-30

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