EP1004776A3 - Process and apparatus for avoiding cavitation in a pump conveying saturated water - Google Patents

Process and apparatus for avoiding cavitation in a pump conveying saturated water Download PDF

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Publication number
EP1004776A3
EP1004776A3 EP99811083A EP99811083A EP1004776A3 EP 1004776 A3 EP1004776 A3 EP 1004776A3 EP 99811083 A EP99811083 A EP 99811083A EP 99811083 A EP99811083 A EP 99811083A EP 1004776 A3 EP1004776 A3 EP 1004776A3
Authority
EP
European Patent Office
Prior art keywords
container
water
saturated water
control unit
temperature
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.)
Withdrawn
Application number
EP99811083A
Other languages
German (de)
French (fr)
Other versions
EP1004776A2 (en
Inventor
Erhard Dr. Liebig
Jens Wötzel
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.)
General Electric Technology GmbH
Original Assignee
ABB Asea Brown Boveri Ltd
Asea Brown Boveri AB
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 ABB Asea Brown Boveri Ltd, Asea Brown Boveri AB filed Critical ABB Asea Brown Boveri Ltd
Publication of EP1004776A2 publication Critical patent/EP1004776A2/en
Publication of EP1004776A3 publication Critical patent/EP1004776A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Reciprocating Pumps (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)

Abstract

Ein Behälter (1) mit Sattwasser (2) ist über eine Saugleitung (4) mit einer Pumpe (5) verbunden. Die Ist-Werte von Druck und/oder Temperatur im Behälter (1) werden durch eine Messeinrichtung (7) erfasst und einem Steuergerät (8) zugeführt, in welchem die Ist-Werte mit festgelegten Werten verglichen werden. In einem Wasserreservoir (9) ist Zumischwasser vorhanden, dessen Temperatur tiefer als die Ist-Temperatur im Behälter (1) ist. Dieses Wasserreservoir (9) steht über eine Zulaufleitung (11) mit der Saugleitung (4) in Verbindung. In der Zulaufleitung (11) ist ein Stellglied (12) angeordnet, das vom Steuergerät (8) angesteuert wird. Wenn die Ist-Werte im Behälter (1) die festgelegten Werte erreichen, so dass die Pumpe (5) kavitieren könnte, wird das Stellglied (12) durch das Steuergerät (8) geöffnet, um Zumischwasser in die Saugleitung (4) einzubringen.

Figure 00000001
A container (1) with saturated water (2) is connected to a pump (5) via a suction line (4). The actual values of pressure and / or temperature in the container (1) are recorded by a measuring device (7) and fed to a control unit (8), in which the actual values are compared with specified values. Mixing water is present in a water reservoir (9), the temperature of which is lower than the actual temperature in the container (1). This water reservoir (9) is connected to the suction line (4) via an inlet line (11). An actuator (12), which is controlled by the control unit (8), is arranged in the inlet line (11). When the actual values in the container (1) reach the specified values, so that the pump (5) could cavitate, the actuator (12) is opened by the control unit (8) in order to introduce admixed water into the suction line (4).
Figure 00000001
EP99811083A 1998-11-25 1999-11-24 Process and apparatus for avoiding cavitation in a pump conveying saturated water Withdrawn EP1004776A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19854383 1998-11-25
DE19854383A DE19854383A1 (en) 1998-11-25 1998-11-25 Process and system for avoiding cavitation in a pump that feeds saturated water

Publications (2)

Publication Number Publication Date
EP1004776A2 EP1004776A2 (en) 2000-05-31
EP1004776A3 true EP1004776A3 (en) 2001-04-18

Family

ID=7888980

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99811083A Withdrawn EP1004776A3 (en) 1998-11-25 1999-11-24 Process and apparatus for avoiding cavitation in a pump conveying saturated water

Country Status (3)

Country Link
US (1) US6398510B1 (en)
EP (1) EP1004776A3 (en)
DE (1) DE19854383A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004016804A1 (en) * 2004-04-06 2005-10-27 Daimlerchrysler Ag Device for measuring structure-borne noise
DE102012209480B4 (en) * 2012-06-05 2013-12-19 Envi Con & Plant Engineering Gmbh High-pressure pumping system for conveying hot media
CN103758740A (en) * 2014-01-20 2014-04-30 兰州理工大学 Pump cavitation control device
CN112443758A (en) * 2020-12-16 2021-03-05 中国海洋石油集团有限公司 LPG pump series control system and control method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1070497B (en) * 1959-12-03
DE3304705A1 (en) * 1983-02-11 1984-08-16 Deutsche Babcock Werke AG, 4200 Oberhausen Method and device for preventing cavitation in the case of centrifugal pumps
EP0321295A2 (en) * 1987-12-18 1989-06-21 Westinghouse Electric Corporation Automatic pump protection system
DE4300560A1 (en) * 1992-01-14 1993-07-22 Samsung Electronics Co Ltd Control for hot water circulating pump - has sensors for input temperature and input pressure to pump and with microprocessor control to prevent cavitation
US5332356A (en) * 1992-02-07 1994-07-26 Guelich Johann Friedrich Process and a device for determining the erosion caused by cavitation in components through which fluid flows

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6014962B2 (en) * 1978-04-05 1985-04-17 株式会社日立製作所 Forced recirculation steam generator
JPS54162039A (en) * 1978-06-14 1979-12-22 Toshiba Corp Pumping-up power plant
US4552099A (en) * 1984-10-25 1985-11-12 Westinghouse Electric Corp. Anticipatory boiler feedpump suction head controller system
US5360057A (en) * 1991-09-09 1994-11-01 Rocky Research Dual-temperature heat pump apparatus and system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1070497B (en) * 1959-12-03
DE3304705A1 (en) * 1983-02-11 1984-08-16 Deutsche Babcock Werke AG, 4200 Oberhausen Method and device for preventing cavitation in the case of centrifugal pumps
EP0321295A2 (en) * 1987-12-18 1989-06-21 Westinghouse Electric Corporation Automatic pump protection system
DE4300560A1 (en) * 1992-01-14 1993-07-22 Samsung Electronics Co Ltd Control for hot water circulating pump - has sensors for input temperature and input pressure to pump and with microprocessor control to prevent cavitation
US5332356A (en) * 1992-02-07 1994-07-26 Guelich Johann Friedrich Process and a device for determining the erosion caused by cavitation in components through which fluid flows

Also Published As

Publication number Publication date
US20020034445A1 (en) 2002-03-21
DE19854383A1 (en) 2000-05-31
EP1004776A2 (en) 2000-05-31
US6398510B1 (en) 2002-06-04

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