FR2552827A1 - HYDROSTATIC MACHINE (PUMP OR MOTOR) - Google Patents

HYDROSTATIC MACHINE (PUMP OR MOTOR) Download PDF

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Publication number
FR2552827A1
FR2552827A1 FR8415194A FR8415194A FR2552827A1 FR 2552827 A1 FR2552827 A1 FR 2552827A1 FR 8415194 A FR8415194 A FR 8415194A FR 8415194 A FR8415194 A FR 8415194A FR 2552827 A1 FR2552827 A1 FR 2552827A1
Authority
FR
France
Prior art keywords
temperature
machine
pump
motor
hydrostatic machine
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.)
Pending
Application number
FR8415194A
Other languages
French (fr)
Inventor
Wilhelm Dworak
Martin Fader
Willy Mahl
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of FR2552827A1 publication Critical patent/FR2552827A1/en
Pending 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
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B51/00—Testing machines, pumps, or pumping installations
    • 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
    • F04B2205/00—Fluid parameters
    • F04B2205/10—Inlet temperature
    • 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
    • F04B2205/00—Fluid parameters
    • F04B2205/11—Outlet temperature

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Rotary Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Hydraulic Motors (AREA)

Abstract

DES APPAREILS DE MESURE DE TEMPERATURE A, B SONT MONTES RESPECTIVEMENT SUR LE COTE D'ENTREE ET SUR LE COTE DE SORTIE D'UNE MACHINE HYDROSTATIQUE. EN SE BASANT SUR LA DIFFERENCE DE TEMPERATURE, ON PEUT CALCULER LE RENDEMENT A PARTIR DUQUEL ON PEUT CALCULER L'ETAT D'USURE DE LA MACHINE.A, B TEMPERATURE MEASURING DEVICES ARE MOUNTED RESPECTIVELY ON THE ENTRY SIDE AND ON THE EXIT SIDE OF A HYDROSTATIC MACHINE. BASED ON THE TEMPERATURE DIFFERENCE, THE EFFICIENCY CAN BE CALCULATED FROM WHICH WE CAN CALCULATE THE STATE OF WEAR OF THE MACHINE.

Description

L'état d'usure d'une machine hydrostatique estThe state of wear of a hydrostatic machine is

révélé par son rendement Ce rendement peut à son tour être mesuré en se basant sur la différence de température entre le côté d'entrée et le côté de sortie Ceci 5 constitue un moyen très simple et peu coûteux de déceler et de mesurer l'état d'usure et le rendement d'une machine hydrostatique.  revealed by its efficiency This efficiency can in turn be measured on the basis of the temperature difference between the inlet side and the outlet side. This is a very simple and inexpensive means of detecting and measuring the state of wear and performance of a hydrostatic machine.

Les thermo-éléments sont particulièrement bien  Thermo elements are particularly good

appropriés pour être utilisés comme appareils de mesure 10 de la température La différence de température est avantageusement indiquée sur un afficheur à cristaux liquides (LCD) fixé au corps de la pompe.  suitable for use as temperature measuring devices The temperature difference is advantageously indicated on a liquid crystal display (LCD) fixed to the pump body.

D'autres caractéristiques et avantages de l'invention seront mieux compris à la lecture de la descrip15 tion qui va suivre, d'un exemple de réalisation et en se référant aux dessins annexés sur lesquels, la figure 1 représente une pompe à engrenage en coupe;  Other characteristics and advantages of the invention will be better understood on reading the description which follows, of an exemplary embodiment and with reference to the appended drawings in which, FIG. 1 represents a gear pump in section ;

la figure 2 est une vue de dessus d'une pompe à 20 engrenage.  Figure 2 is a top view of a gear pump.

Sur la figure 1, on a désigné par 10 le corps d'une pompe à engrenage dans lequel est ménagée une cavité de corps 11 qui est formée par deux perçages sécants 12, 13 Dans la cavité 11 du corps, sont logés deux pi25 gnons 14, 15 qui sont en prise par engrènement extérieur Ces pignons aspirent un fluide sous pression à travers un perçage d'entrée 16 et le refoulent dans un perçage de sortie 17 Un thermo-élément A ou A' est disposé dans le perçage d'entrée 16, soit à l'extrémité de 30 la conduite d'aspiration, soit immédiatement avant la région d'engrènement, et un deuxième thermo-élément B ou B' est disposé dans le perçage de sortie, soit à la sortie du corps, soit immédiatement à la suite de la région d'engrènement. L'état d'usure de la machine peut être révélé par son rendement A son tour, ce rendement peut être mesuré sur la base de la différence de température entre le perçage d'entrée 16 et le perçage de sortie 17 Lorsque l'usure s'accentue, une partie croissante de la puissance fournie à la machine est transformée en chaleur. 5 La température est mesurée par les thermo-éléments précités L'usure peut ensuite être calculée, soit empiriquement, par exemple à l'aide de courbes comparatives, soit  In FIG. 1, the body of a gear pump has been designated by 10 in which a body cavity 11 is formed which is formed by two intersecting bores 12, 13 In the cavity 11 of the body, two pi25 pins 14 are housed , 15 which are engaged by external meshing These pinions suck a pressurized fluid through an inlet bore 16 and discharge it into an outlet bore 17 A thermo-element A or A 'is arranged in the inlet bore 16 , either at the end of the suction pipe, or immediately before the engagement region, and a second thermo-element B or B ′ is placed in the outlet hole, either at the outlet of the body, or immediately following the region of meshing. The state of wear of the machine can be revealed by its efficiency In turn, this efficiency can be measured on the basis of the temperature difference between the inlet hole 16 and the outlet hole 17 When the wear s 'accentuated, an increasing part of the power supplied to the machine is transformed into heat. 5 The temperature is measured by the aforementioned thermo-elements. The wear can then be calculated, either empirically, for example using comparative curves, or

encore par un calcul mathématique.again by a mathematical calculation.

L'appareil de mesure est avantageusement consti10 tué par un afficheur 19 à cristaux liquides collé sur le  The measuring device is advantageously constructed by a liquid crystal display 19 stuck on the

corps ou par une bande colorée qui varie avec la différence de température L'intégration des éléments de mesure thermique du rendement dans la pompe supprime la nécessité de prévoir des organes additionnels En princi15 pe, ce procédé peut être utilisé sur n'importe quelle machine hydrostatique.  body or by a colored strip which varies with the temperature difference The integration of the thermal performance measurement elements in the pump eliminates the need to provide additional members In principle, this process can be used on any hydrostatic machine .

Bien entendu, diverses modifications pourront  Of course, various modifications may

être apportées par l'homme de l'art au dispositif qui vient d'être décrit uniquement à titre d'exemple non li20 mitatif sans sortir du cadre de l'invention.  be made by those skilled in the art to the device which has just been described solely by way of non-limiting example without departing from the scope of the invention.

Claims (4)

REVENDICATIONS 1 Machine hydrostatique (pompe ou moteur), caractérisée en ce qu'à son entrée et à sa sortie ( 16, 17), sont montés respectivement des appareils de mesure de la température (A, A'; B, B'), qui captent la diffé5 rence de température.  1 Hydrostatic machine (pump or motor), characterized in that at its inlet and at its outlet (16, 17), temperature measurement devices (A, A '; B, B') are mounted respectively, which capture the difference in temperature. 2 Machine selon la revendication 1, caractérisée en ce que, sur cette machine, est monté un appareil indicateur de température ( 19) qui indique la différence  2 Machine according to claim 1, characterized in that, on this machine, is mounted a temperature indicator device (19) which indicates the difference de température.of temperature. 3 Machine selon l'une des revendications 1 et  3 Machine according to one of claims 1 and 2, caractérisée en ce que les appareils de mesure de la  2, characterized in that the devices for measuring the température sont des thermo-éléments.  temperature are thermo-elements. 4 Machine selon la revendication 2, caractérisée en ce que l'appareil indicateur de température est 15 un afficheur à cristaux liquides ( 19).  4 Machine according to claim 2, characterized in that the temperature indicating device is a liquid crystal display (19).
FR8415194A 1983-10-03 1984-10-03 HYDROSTATIC MACHINE (PUMP OR MOTOR) Pending FR2552827A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19833335862 DE3335862A1 (en) 1983-10-03 1983-10-03 HYDROSTATIC MACHINE (PUMP OR MOTOR)

Publications (1)

Publication Number Publication Date
FR2552827A1 true FR2552827A1 (en) 1985-04-05

Family

ID=6210807

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8415194A Pending FR2552827A1 (en) 1983-10-03 1984-10-03 HYDROSTATIC MACHINE (PUMP OR MOTOR)

Country Status (5)

Country Link
JP (1) JPS6061487U (en)
DE (1) DE3335862A1 (en)
FR (1) FR2552827A1 (en)
GB (1) GB2147951B (en)
IT (1) IT8423328V0 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6038114A (en) * 1983-08-12 1985-02-27 Yokohama Rubber Co Ltd:The Sealer for kneader
DE4129854A1 (en) * 1991-09-07 1993-03-11 Teves Gmbh Alfred GEAR PUMP WITH A NON-LINEAR SUPPLY QUANTITY

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2372422A1 (en) * 1976-11-30 1978-06-23 Hofflinger Werner EQUIPMENT FOR MEASURING THE PERFORMANCE OF HYDROSTATIC DEVICES
DE3025767A1 (en) * 1980-07-08 1982-02-04 Robert Bosch Gmbh, 7000 Stuttgart Opto-electronic display incorporating touch control switch - has spaced transparent electrodes applied to finger depression in front surface of display
US4406550A (en) * 1981-01-26 1983-09-27 Lane S. Garrett Temperature monitoring and utilization system
EP0100210A2 (en) * 1982-07-26 1984-02-08 Honeywell Inc. Coefficient of performance measuring device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1065218A (en) * 1965-09-04 1967-04-12 Vilter Manufacturing Corp Compressor protection system
JPS5783687A (en) * 1980-11-13 1982-05-25 Nachi Fujikoshi Corp Efficiency measurement unit for hydraulic pump or motor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2372422A1 (en) * 1976-11-30 1978-06-23 Hofflinger Werner EQUIPMENT FOR MEASURING THE PERFORMANCE OF HYDROSTATIC DEVICES
DE3025767A1 (en) * 1980-07-08 1982-02-04 Robert Bosch Gmbh, 7000 Stuttgart Opto-electronic display incorporating touch control switch - has spaced transparent electrodes applied to finger depression in front surface of display
US4406550A (en) * 1981-01-26 1983-09-27 Lane S. Garrett Temperature monitoring and utilization system
EP0100210A2 (en) * 1982-07-26 1984-02-08 Honeywell Inc. Coefficient of performance measuring device

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
\LHYDRAULIK UND PNEUMATIK, vol. 24, no. 6, juin 1980, pages 471-476, Mainz, DE; P. NENTWIG: "Thermodynamische Wirkungsgradmessung an Hydroaggregaten im Einbauzustand" *
FUNKSCHAU, no. 23, novembre 1980, pages 133-134, Munich, DE; R. BROCKMANN: "Differenztemperatur-Messger{t" *
ISA TRANSACTIONS, vol. 9, no. 3, 1970, pages 189-195; T.R. FOORD: "The application of a transformer bridge to the thermodynamic method of measuring hydraulic efficiency" *
TECHNIQUES CEM., no. 94, 1976, pages 29-35, Paris, FR; R. DRIEU et al.: "Application des sondes de démarrage à la conduite des turbines à resurchauffe" *

Also Published As

Publication number Publication date
GB2147951A (en) 1985-05-22
GB2147951B (en) 1987-07-22
IT8423328V0 (en) 1984-09-26
DE3335862A1 (en) 1985-04-18
JPS6061487U (en) 1985-04-30
GB8424941D0 (en) 1984-11-07

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