EP0802329A2 - Dispositif pour l'aération d'un réservoir - Google Patents

Dispositif pour l'aération d'un réservoir Download PDF

Info

Publication number
EP0802329A2
EP0802329A2 EP97105577A EP97105577A EP0802329A2 EP 0802329 A2 EP0802329 A2 EP 0802329A2 EP 97105577 A EP97105577 A EP 97105577A EP 97105577 A EP97105577 A EP 97105577A EP 0802329 A2 EP0802329 A2 EP 0802329A2
Authority
EP
European Patent Office
Prior art keywords
storage tank
inlet
air
compressed air
pressure regulator
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
EP97105577A
Other languages
German (de)
English (en)
Other versions
EP0802329B1 (fr
EP0802329A3 (fr
Inventor
Alfred Gröner
Gerhard Steiner
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.)
Mahle Filtersysteme GmbH
Original Assignee
Knecht Filterwerk GmbH
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 Knecht Filterwerk GmbH filed Critical Knecht Filterwerk GmbH
Publication of EP0802329A2 publication Critical patent/EP0802329A2/fr
Publication of EP0802329A3 publication Critical patent/EP0802329A3/fr
Application granted granted Critical
Publication of EP0802329B1 publication Critical patent/EP0802329B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/26—Supply reservoir or sump assemblies
    • F15B1/265—Supply reservoir or sump assemblies with pressurised main reservoir
    • 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
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F15B21/044—Removal or measurement of undissolved gas, e.g. de-aeration, venting or bleeding

Definitions

  • the invention relates to a device for venting a storage tank of a system operating with hydraulic fluid, in which changes in the level of the liquid occur in the storage tank, the latter having an inlet for dried air above the level of the liquid.
  • the object of the invention is to provide dried air without using a special air dryer.
  • the air entering the storage tank is dried in that the moisture is precipitated anyway when compressed air is generated.
  • the pressure regulator By means of the pressure regulator, the compressed air is expanded to approximately atmospheric pressure and in this state is fed to the storage tank, in which a slight excess pressure can form.
  • the inflow of relaxed air is therefore limited to the amount of liquid withdrawn from the storage tank.
  • the compressed air source is designed as a branch from a compressed air generation system required outside the system. This can be particularly useful if the system is located in a device, for example a mobile construction machine with a compressed air braking device, in which a compressed air generation system must be present anyway.
  • the inlet can also serve as an outlet for excess air in the storage tank. When liquid flows back into the storage tank, the excess air can escape in this way.
  • an aerosol separator is inserted between the pressure regulator and the inlet.
  • the aerosol separator can also be connected downstream of the outlet in order to filter out contaminants that are entrained in the liquid.
  • a compact design of the device results from the fact that the pressure regulator, a compressed air inlet connection connected to the compressed air source, a connection serving as the inlet and outlet of the storage tank and an exhaust air outlet opening with an upstream pressure relief valve are combined in a unit which can be mounted on the storage tank.
  • the device can thus be installed fully assembled in the system.
  • a first check valve connected between the pressure regulator and the connection to the storage tank can also be provided in the structural unit, with the inflow of air bypassing the aerosol separator, and / or one between the connection to the storage tank and another Exhaust air outlet switched second check valve may be provided, in the open position of which outflowing air bypasses the aerosol separator.
  • Another possibility using compressed air from a compressed air source in such storage tanks to avoid the formation of condensed water and the consequent premature aging of the liquid, corrosion, increased wear and, at appropriate temperatures, icing is by means of a compressed air operated ejector in the storage tank above it Outlet to a negative pressure generate, whereby air is sucked out of the storage tank, and connected in parallel to vent the inlet of the storage tank via a pressure regulator from the compressed air source.
  • the negative pressure in the storage tank causes a lowering of the water vapor partial pressure and thus outgassing of the liquid.
  • the air sucked out of the storage tank can contain aerosols which are separated out in an aerosol separator connected downstream of the ejector, which is followed by an exhaust air outlet opening.
  • the storage tank is also ventilated via the pressure regulator via a vacuum relief valve, which prevents excessive vacuum from developing in the storage tank.
  • a pressure relief valve leading to the exhaust air outlet can also be connected directly or indirectly to the storage tank, which, if a large amount of liquid suddenly flows back, allows air to flow out of the storage tank and thus prevents an undesirable increase in the pressure in the storage tank.
  • a connection from the compressed air source, the pressure regulator, the vacuum relief valve, the ejector, the aerosol separator and the pressure relief valve can be combined to form one structural unit.
  • a pressure regulator 2 is connected downstream of a compressed air source 1.
  • an aerosol separator 3 which is connected via a line connection to an inlet 4 of a storage tank 5.
  • the inlet 4 serves at the same time as the outlet of the storage tank 5, which is connected via the line connection and the aerosol separator 3 to a pressure relief valve 6, to which an exhaust air outlet opening 7 connects. Liquid is withdrawn from the storage tank 5 and liquid flows back into it, as indicated by arrows.
  • the assembly 11 shown in FIG. 2 has in a housing 8 a compressed air inlet connection 9 which is connected to the compressed air source 1 and which is connected via the pressure regulator 2 to a space in the housing 8 enclosing the aerosol separator 3.
  • the space formed within the aerosol separator 3 opens at the bottom into a connection 10 which serves as an inlet 4 to the storage tank 5 and also as an outlet from the storage tank 5.
  • the space enclosing the aerosol separator 3 in the housing 8 is connected to the exhaust air outlet opening 7 via the pressure relief valve 6.
  • a first check valve 12 is connected between the space enclosing the aerosol separator 3 in the housing 8 and the connection 10, and air flowing in bypasses the aerosol separator 3 when it is in the open position.
  • a second check valve 14 is connected, in the open position of which air flowing out bypasses the aerosol separator 3.
  • a compressed air source 21 is followed by a pressure regulator 22.
  • This is followed by an ejector 23, which in turn is followed by an aerosol separator 24 and finally by an exhaust air outlet opening 27.
  • a line connection branches off, which leads via a vacuum relief valve 31 to an inlet 25 of a storage tank 26.
  • a pressure relief valve 28 is connected, which leads to an exhaust air outlet 29.
  • an outlet 30 of the storage tank 26 is connected to the ejector 23, namely at its suction connection, via a further line connection. Liquid is withdrawn from the storage tank 26 and liquid flows back into it, as indicated by arrows.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
EP97105577A 1996-04-19 1997-04-04 Dispositif pour l'aération d'un réservoir Expired - Lifetime EP0802329B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19615475 1996-04-19
DE19615475A DE19615475A1 (de) 1996-04-19 1996-04-19 Einrichtung zur Belüftung eines Vorratstanks

Publications (3)

Publication Number Publication Date
EP0802329A2 true EP0802329A2 (fr) 1997-10-22
EP0802329A3 EP0802329A3 (fr) 1998-02-11
EP0802329B1 EP0802329B1 (fr) 2001-08-01

Family

ID=7791734

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97105577A Expired - Lifetime EP0802329B1 (fr) 1996-04-19 1997-04-04 Dispositif pour l'aération d'un réservoir

Country Status (2)

Country Link
EP (1) EP0802329B1 (fr)
DE (2) DE19615475A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102357974A (zh) * 2011-09-28 2012-02-22 无锡锦和科技有限公司 自封式大通流量排气罐
WO2016097512A1 (fr) * 2014-12-17 2016-06-23 Technoboost Circuit hydraulique comprenant un reservoir tres basse pression mis en depression
CN120887127A (zh) * 2025-09-30 2025-11-04 苏州杜尔气体化工装备有限公司 一种具有过滤干燥功能的储罐吸阀补气系统及其储罐

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10002118A1 (de) * 2000-01-20 2001-07-26 Mann & Hummel Filter Ausgleichsbehälter eines Hydrauliksystems
RU2241865C2 (ru) * 2002-12-31 2004-12-10 Открытое акционерное общество "Красноярский проектно-конструкторский технологический институт комбайностроения" Гидробак
DE102007052023A1 (de) * 2007-10-31 2009-05-07 Trw Automotive Gmbh Hydraulikfluidspeicher sowie hydraulisches Servolenksystem mit einem solchen Hydraulikfluidspeicher

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2208451A (en) * 1938-11-18 1940-07-16 Gen Electric Hydraulic mechanism
GB580604A (en) * 1944-06-19 1946-09-13 Automotive Prod Co Ltd Improvements in or relating to liquid circulating systems
DE2618372A1 (de) * 1976-04-27 1977-11-17 Franz Walter Kontinuierlich arbeitender druckmittelwandler
DE2650802C2 (de) * 1976-11-03 1981-10-08 Borsig Gmbh, 1000 Berlin Gas-Öl-Antrieb
US4827719A (en) * 1983-11-14 1989-05-09 Paoluccio John A Closed hydraulic system with drying means
DE8511057U1 (de) * 1985-04-16 1985-10-03 Bodendorfer, Gerhard, 7505 Ettlingen Druckhaltekopf
HU201705B (en) * 1988-11-04 1990-12-28 Autoipari Kutato Fejlesztoe Vehicle air dryer with control gear particularly for pressure air systems
DE4031494C2 (de) * 1990-10-05 1994-07-21 Bundesrep Deutschland Hydraulikölbehälter

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102357974A (zh) * 2011-09-28 2012-02-22 无锡锦和科技有限公司 自封式大通流量排气罐
CN102357974B (zh) * 2011-09-28 2016-02-03 无锡锦和科技有限公司 自封式大通流量排气罐
WO2016097512A1 (fr) * 2014-12-17 2016-06-23 Technoboost Circuit hydraulique comprenant un reservoir tres basse pression mis en depression
FR3030650A1 (fr) * 2014-12-17 2016-06-24 Technoboost Circuit hydraulique comprenant un reservoir tres basse pression mis en depression
CN107107727A (zh) * 2014-12-17 2017-08-29 技术推进公司 包括处于负压的极低压容器的液压回路
CN107107727B (zh) * 2014-12-17 2020-08-07 技术推进公司 包括处于负压的极低压容器的液压回路
CN120887127A (zh) * 2025-09-30 2025-11-04 苏州杜尔气体化工装备有限公司 一种具有过滤干燥功能的储罐吸阀补气系统及其储罐

Also Published As

Publication number Publication date
EP0802329B1 (fr) 2001-08-01
EP0802329A3 (fr) 1998-02-11
DE59704163D1 (de) 2001-09-06
DE19615475A1 (de) 1997-10-23

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