EP0390628B1 - Pumpenaggregat mit einem Temperaturschalter auf dem Druckstutzen - Google Patents

Pumpenaggregat mit einem Temperaturschalter auf dem Druckstutzen Download PDF

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Publication number
EP0390628B1
EP0390628B1 EP19900400654 EP90400654A EP0390628B1 EP 0390628 B1 EP0390628 B1 EP 0390628B1 EP 19900400654 EP19900400654 EP 19900400654 EP 90400654 A EP90400654 A EP 90400654A EP 0390628 B1 EP0390628 B1 EP 0390628B1
Authority
EP
European Patent Office
Prior art keywords
motor
discharge pipe
pump unit
pump
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.)
Expired - Lifetime
Application number
EP19900400654
Other languages
English (en)
French (fr)
Other versions
EP0390628A1 (de
Inventor
Jacques Berthon
Christian Mabillot
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.)
KSB SAS
Original Assignee
KSB SAS
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 KSB SAS filed Critical KSB SAS
Publication of EP0390628A1 publication Critical patent/EP0390628A1/de
Application granted granted Critical
Publication of EP0390628B1 publication Critical patent/EP0390628B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • F04B49/10—Other safety measures

Definitions

  • the present invention relates to pump sets, according to the preamble of claim 1.
  • DE-A-2925830 describes a device for protecting against dry running for pumps, which comprises a probe for measuring the resistance between the pump body and the liquid.
  • the probe enters the liquid circuit.
  • An electrical circuit is used to stop the engine in response to the signal from the probe. This does not detect a temperature, but the resistance of the liquid which passes through the piping, which requires to provide an additional crossing in the piping.
  • JP-58 20 982 having the characteristics of the preamble of claim 1, the sum of the temperature rises of the pump body and motor flange would be detected. It is not proposed to detect the temperature of the discharge piping.
  • the invention overcomes this drawback of dry running by a pump unit as defined in claim 1.
  • the temperature detector stops the pump set.
  • the detection of the temperature of the discharge piping is much more precise than that of an entire pump body and even more of both it and the associated motor, because its calorific capacity is much lower and there is no produces no local overheating due to the mechanical action of the moving parts of the pump.
  • the signal supplied by the temperature detector is then very sensitive, since the latter is subjected on the one hand to a cooling effect due to the heat exchange relationship with the discharge piping through which cold liquid passes and to a heating effect due to its heat exchange relationship with the heat source that is the dissipator.
  • the temperature sensor stops the pump set.
  • the two sources fail and combine their effects.
  • the temperature detector is interposed between the discharge pipe and the heat sink of the control circuit.
  • the heat sink is in heat exchange relation with the discharge pipe, which means that it is mounted directly on the discharge pipe or that it is mounted in the immediate vicinity thereof.
  • the pump set includes a motor 1 driving a pump 2 in rotation on the discharge pipe 3 from which is mounted, in heat exchange relationship because in contact with the discharge pipe 3, the heat sink 4 of the power stage of the speed controller 5 of the motor 1.
  • the speed controller 5 controls the motor 1 by a conductor 6.
  • thermoelectric transducer 9 which by a conductor 10 opens the electrical circuit 5, 6 of the motor 1, when the temperature detected by the detector 7 exceeds a given threshold.

Landscapes

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

Claims (3)

  1. Pumpenaggregat, bestehend aus einer Pumpe (2) mit einer Druckleitung (3), einem Elektromotor (1) zum Antrieb der Pumpe (2), einem elektrischen Betätigungsstromkreis (5, 6) des Motors und einem Wärmemelder (7), der ein der Temperatur entsprechendes Signal an einen thermoelektrischen Signalumformer (9) übermittelt, der den elektrischen Betätigungsstromkreis (5, 6) des Motors (1) unterbricht, wenn die erfaßte Temperatur einen vorgegebenen Wert überschreitet, dadurch gekennzeichnet, daß der elektrische Betätigungsstromkreis einen Kühlkörper (4) aufweist, an welchem das Fördermedium vorbeiströmt, und daß der Wärmemelder (7) so angeordnet ist, daß er die Temperatur der Druckleitung (3) erfaßt und der Wärmemelder (7) wärmeleitend mit der Druckleitung (3) und dem Kühlkörper (4) verbunden ist.
  2. Pumpenaggregat nach Anspruch 1, dadurch gekennzeichnet, daß der Wärmemelder (7) zwischen der Druckleitung (3) und dem Kühlkörper (4) angeordnet ist.
  3. Pumpenaggregat nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß der Kühlkörper (4) wärmeleitend mit der Druckleitung (3) verbunden ist.
EP19900400654 1989-03-31 1990-03-13 Pumpenaggregat mit einem Temperaturschalter auf dem Druckstutzen Expired - Lifetime EP0390628B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8904244A FR2645212A1 (fr) 1989-03-31 1989-03-31 Groupe motopompe a detecteur de temperature sur la tuyauterie de refoulement
FR8904244 1989-03-31

Publications (2)

Publication Number Publication Date
EP0390628A1 EP0390628A1 (de) 1990-10-03
EP0390628B1 true EP0390628B1 (de) 1993-07-14

Family

ID=9380252

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900400654 Expired - Lifetime EP0390628B1 (de) 1989-03-31 1990-03-13 Pumpenaggregat mit einem Temperaturschalter auf dem Druckstutzen

Country Status (3)

Country Link
EP (1) EP0390628B1 (de)
DE (1) DE69002179T2 (de)
FR (1) FR2645212A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4103857C2 (de) * 1991-02-08 1994-05-05 Willi Hacker Vorrichtung zur Pumpensteuerung
DE10054091A1 (de) * 2000-11-01 2002-05-16 Grundfos As Verfahren zur Ermittlung mindestens einer Eigenschaft eines im Förderweg eines Pumpenaggregats befindlichen Mediums
CN104653443A (zh) * 2015-01-20 2015-05-27 湖南五新重型装备有限公司 速凝剂泵保护装置及车载式湿喷机
CN104712561B (zh) * 2015-01-22 2017-05-31 晋州市水泵厂 一种潜水泵缺水自动保护控制装置及使用方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH267182A (fr) * 1939-03-28 1950-03-15 Airseco Societe A Responsabili Installation à air comprimé.
DE2925830A1 (de) * 1979-06-27 1981-01-15 Rudolf Steffan Trockenlaufschutz fuer pumpen aller art
JPS57131887A (en) * 1981-02-07 1982-08-14 Hitachi Ltd Electric well pump
JPS5820982A (ja) * 1981-07-29 1983-02-07 Hitachi Ltd 電動機付ポンプ
JPS59155584A (ja) * 1983-02-24 1984-09-04 Atsugi Motor Parts Co Ltd コンプレツサの温度制御装置

Also Published As

Publication number Publication date
DE69002179T2 (de) 1994-02-03
DE69002179D1 (de) 1993-08-19
EP0390628A1 (de) 1990-10-03
FR2645212A1 (fr) 1990-10-05

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