EP2224132B1 - Pumpvorrichtung - Google Patents

Pumpvorrichtung Download PDF

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Publication number
EP2224132B1
EP2224132B1 EP10152003.9A EP10152003A EP2224132B1 EP 2224132 B1 EP2224132 B1 EP 2224132B1 EP 10152003 A EP10152003 A EP 10152003A EP 2224132 B1 EP2224132 B1 EP 2224132B1
Authority
EP
European Patent Office
Prior art keywords
plunger
pumping device
fluid
cylinder
booster
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.)
Active
Application number
EP10152003.9A
Other languages
English (en)
French (fr)
Other versions
EP2224132A3 (de
EP2224132A2 (de
Inventor
Johann Carl Rudolf Van Der Hart
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.)
Jcr Van Der Hart Holding Bv
Original Assignee
Jcr Van Der Hart Holding Bv
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 Jcr Van Der Hart Holding Bv filed Critical Jcr Van Der Hart Holding Bv
Priority to EP11183329.9A priority Critical patent/EP2405138B1/de
Publication of EP2224132A2 publication Critical patent/EP2224132A2/de
Publication of EP2224132A3 publication Critical patent/EP2224132A3/de
Application granted granted Critical
Publication of EP2224132B1 publication Critical patent/EP2224132B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • 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
    • F04B49/08—Regulating by delivery 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
    • 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
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • F04B53/162—Adaptations of cylinders

Definitions

  • the invention relates to a pumping device. Especially for pumping fluids which have been purified often membrane pumps are applied.
  • the advantage of a membrane pump is that there is a gas tight separation from the surrounding; because of this no contamination by foreign (gas) molecules will occur.
  • positive displacement pumps may be applied.
  • Known in the art are amongst others the DLE series pumps from the company Maximator, or pumps from Haskel.
  • the plunger in these plunger pumps or booster pumps due to the reciprocating movement of the plunger in these plunger pumps or booster pumps, alternatingly underpressure and overpressure will occur. There is a real possibility that this underpressure will draw in unwanted molecules via the plunger sealings and past the cylinder sealings. It is even very well possible to draw in air, which in combination with highly ignitable media may lead to a potential risk of explosion.
  • a liquid and/or gas booster pump which works according to the plunger principle generates heat at the compression cycle. When pumping larger molecules, so much heat is even generated that overheating can lead to very unwanted situations.
  • a lubrication film which may be present in order to protect sealing rings may burn, resulting in the break-down of amongst others the plunger sealing, cylinder sealing, damage to the plunger and the cylinder wall, check valves, and the like. Furthermore, the combustion products will gas out in the medium which is to be pumped and lead to contamination. With heavy loads on the booster pump, this risk will increase even further.
  • booster pumps are equipped with cooling ribs or the cycle-air of the booster is led into a double wall around the high pressure cylinder wall which causes it to cool down. Under standard circumstances this can be sufficient and the operational temperatures of those systems are set to remain within a bandwidth of 30 to 90 degrees Celsius.
  • an active control of the compression chamber temperature and also of the medium to be pumped is important. One might think of a medium which becomes instable at a higher temperature, which can reach an ignition temperature or which can go outside set boundaries.
  • the invention seeks to provide an improved pumping device.
  • the invention further or additionally aims to provide a pumping device which is suitable for pumping purified fluids like gases.
  • the invention to this end provides a pumping device according to claim 1.
  • the basic principle of the plunger booster pump is a composition of two rod coupled plungers, in which a large compressed air driven plunger drives the coupled smaller cylinder.
  • the amplification of the compression force is used to pump medium at the other side of the booster.
  • this chamber is in a pressure controlled manner coupled to the fluid that is to be pumped.
  • plunger booster pump The basic principle of the pumping device, here also called plunger booster pump, comprises, as already explained, an assembly of two rod coupled plungers, in which a larger, compressed air driven (“low pressure”) plunger drives a smaller, coupled (“high pressure”) plunger.
  • the amplified compression force that is in this manner generated during operation is used to pump a fluid of the pumping device.
  • a breathing segment is provided between both systems.
  • a second leaking in could be possible because of failure of sealings at the compression side of the high pressure cylinder tube, and due to this false air can be sucked in.
  • a controller may also be included which monitors whether the set pressure values in the breathing segments of the double cylinder wall of the high pressure cylinder do not become too high or too low. This can indicate a starting sealing problem and can be reported before an unwanted situation occurs.
  • This modification will therefore not only provide a preservation of the purity of the medium to be pumped, it also prevents potentially dangerous mixtures (which will furthermore be compressed), it allows to monitor and report the mechanical status of the plunger booster pump.
  • An active temperature control will allow a broader application of these pumping systems.
  • a cooling spiral around the high pressure cylinder This cooling spiral will be able to actively cool the compression chamber and the plunger.
  • the end part of the high pressure cylinder comprises a plate with several additional channels which are provided by us and through which (with the help of some special coupling pieces, we can lead a second cooling conduit; also the high pressure exit path can be cooled because of this.
  • the first mentioned inner spiral cooling is to be applied tightly around the inner tube, in order to improve transmission of heat.
  • a temperature sensor (and possible redundant second sensor) has been inserted. This will control a cooling valve in order to maintain the desired operating temperature, by means of a programmable temperature controller.
  • cooling machine for the completion of the cooling system there is a (locally provided) cooling machine; in an example which is not part of the claimed subject-matter it thus provides a stand alone cooling application or cooling device and does not need to be connected to an external cooling.
  • An example further relates to a temperature control device for a pumping device as described above, but which is outside of the scope of the present claims.
  • this device provides a conversion kit for an existing pump of the described type.
  • This kit comprises a cooling spiral, a casing for the high pressure cylinder, a temperature sensor and a control- or monitoring unit as described above. By means of the casing it is easy to notice leakage in the pump.
  • Figure 1 shows a schedule of a pumping device with a cooling provision.
  • a first low pressure plunger pump is provided with a first plunger in a first cylinder which is here mechanically coupled to a second plunger with a smaller surface area and which is moveable in the second cylinder.
  • the casing of the second cylinder is provided with a casing. This casing is provided with an inlet for the fluid which need to be pumped, usually a gas, under pressure.
  • the end part of the high pressure cylinder comprises a plate in which a number of additional channels, as is shown in Figures 5 and 10 , are provided by us through which we (using special coupling parts, see Figure 14 ) can lead a second cooling conduit, as is shown in Figure 8 and 7 .
  • the high pressure outlet can be cooled by this as well.
  • the aforementioned inner cooling spiral is in an embodiment provided tightly around the inner tube or inner housing, see Figures 13 and 11 , in order to optimize heat transmission.
  • a temperature sensor (and possibly a redundant second sensor for securing purposes) have been provided, see Figure 3 and 9 .
  • This will, through a programmable temperature controller, control a cooling valve in order to maintain the desired operational temperature.
  • a small (locally provided) cooling device is provided; this thus relates to a stand alone cooling device and needs no connection to an external cooling, see Figure 4 .
  • the mentioned gas ballast can facilitate gas qualities up to 6.0 (99,9999%) purity.
  • the end plate can be provided with a circumferential groove that is provided with a sealing ring, for instance made of PTFE.
  • the rim of the outer tube can be provided with a groove which connects to the sealing ring.
  • one of the parts of the plate or outer tube can be provided with a sharp edge which, when the parts are screwed or drawn, e.g. using the pull rods (see for instance Fig. 9 ), tight to each other, cut into the other part and thus provide a sealing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Compressor (AREA)
  • Reciprocating Pumps (AREA)

Claims (5)

  1. Pumpvorrichtung, umfassend einen ersten Niederdruck-Pumpkolben (LP) mit einem ersten Pumpkolbenflächenbereich und der in einem ersten Zylinder nach oben und unten bewegbar ist, und einen funktional verbundenen, zweiten Hochdruck-Pumpkolben (HP) mit einem zweiten kleineren Pumpkolbenbereich und der in einem zweiten Zylinder bewegbar ist, wobei der zweite Zylinder einen Fluideinlass (2) und einen Fluidauslass (3) für ein zu pumpendes Fluid aufweist, der erste Pumpkolben bei Betrieb den zweiten Pumpkolben antreiben soll, der bei Betrieb eine Verstärkung einer Kompressionskraft zum Pumpen des Fluids bewirkt, wobei des Weiteren zwischen beiden Pumpkolben ein Ventilationssegment vorgesehen ist,
    dadurch gekennzeichnet, dass ein Zwischenraum des Ventilationssegments in fluidleitender Verbindung mit dem Einlass (2) des zu pumpenden Fluids über einen Regler (5) gekoppelt ist, der angepasst ist, bei Betrieb einen kleinen Überdruck an dem Ventilationssegment aufrechtzuerhalten.
  2. Pumpvorrichtung nach Anspruch 1, des Weiteren umfassend ein Ausdehnungsgefäß (4), welches ein Speicherbehälter ist, wobei sich das Ventilationssegment in fluidleitender Verbindung mit dem Ausdehnungsgefäß (4) befindet, um bei Betrieb Druckschwankungen aufzunehmen, wobei das Ausdehnungsgefäß des Weiteren sich mit dem Regler in fluidleitender Verbindung befindet.
  3. Pumpvorrichtung nach Anspruch 2, in welcher der zweite Zylinder mit einem zweiten Mantelrohr versehen ist, welches an einem Ende verschlossen ist, womit eine Kammer bereitgestellt wird, die sich mit dem Speicherbehälter in fluidleitender Verbindung befindet.
  4. Pumpvorrichtung nach Anspruch 3, des Weiteren umfassend eine Steuereinrichtung zur Überwachung, ob ein eingestellter Druckwert in dem Ventilationssegment und/oder einem eingefassten Raum des Ventilationssegments innerhalb von Grenzwerten bleibt.
  5. Pumpvorrichtung nach einem der Ansprüche 1 - 3, des Weiteren umfassend eine Steuereinrichtung zur Überwachung, ob ein eingestellter Druckwert in dem Ventilationssegment innerhalb von Grenzwerten bleibt.
EP10152003.9A 2009-01-28 2010-01-28 Pumpvorrichtung Active EP2224132B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11183329.9A EP2405138B1 (de) 2009-01-28 2010-01-28 Pumpvorrichtung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL2002460 2009-01-28

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP11183329.9A Division EP2405138B1 (de) 2009-01-28 2010-01-28 Pumpvorrichtung
EP11183329.9A Division-Into EP2405138B1 (de) 2009-01-28 2010-01-28 Pumpvorrichtung

Publications (3)

Publication Number Publication Date
EP2224132A2 EP2224132A2 (de) 2010-09-01
EP2224132A3 EP2224132A3 (de) 2011-03-23
EP2224132B1 true EP2224132B1 (de) 2020-01-08

Family

ID=42282846

Family Applications (2)

Application Number Title Priority Date Filing Date
EP10152003.9A Active EP2224132B1 (de) 2009-01-28 2010-01-28 Pumpvorrichtung
EP11183329.9A Not-in-force EP2405138B1 (de) 2009-01-28 2010-01-28 Pumpvorrichtung

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP11183329.9A Not-in-force EP2405138B1 (de) 2009-01-28 2010-01-28 Pumpvorrichtung

Country Status (1)

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EP (2) EP2224132B1 (de)

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US519225A (en) * 1894-05-01 Washinqton
GB190421436A (en) * 1904-10-06 1905-08-17 William Henry Northcott Improved Machinery for Compressing Gases and in connection therewith.
GB190823886A (en) * 1908-11-07 1909-03-11 Defries & Sons Ltd J Improvements in and relating to Compressors for Air and other Fluids.
GB191311996A (en) * 1913-05-22 1914-05-22 British Thomson Houston Co Ltd Improvements in and relating to Air and the like Compressors.
US1185412A (en) * 1913-07-29 1916-05-30 Gen Electric Compressor.
US2427616A (en) * 1944-10-05 1947-09-16 William F Mohler Fluid pressure system
US3405522A (en) * 1964-11-25 1968-10-15 Toyoda Machine Works Ltd Hydraulic motor control circuit
US4588424A (en) * 1984-10-16 1986-05-13 Heath Rodney T Fluid pumping system
ATE68037T1 (de) * 1985-10-10 1991-10-15 Anton Braun Rotationsgeschwindigkeitskontrolleinrichtung fuer maschinen mit veraenderlichem hub.
US4955195A (en) * 1988-12-20 1990-09-11 Stewart & Stevenson Services, Inc. Fluid control circuit and method of operating pressure responsive equipment
DE4411533C1 (de) * 1994-04-02 1995-04-06 Draegerwerk Ag Anästhesiegerät
GB0300018D0 (en) * 2003-01-02 2003-02-05 Uws Ventures Ltd Gas control

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP2405138A3 (de) 2012-10-03
EP2224132A3 (de) 2011-03-23
EP2405138B1 (de) 2015-03-11
EP2405138A2 (de) 2012-01-11
EP2224132A2 (de) 2010-09-01

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