FR2665377A1 - CENTRIFUGAL DECANTER WITH ENERGY RECOVERY. - Google Patents

CENTRIFUGAL DECANTER WITH ENERGY RECOVERY. Download PDF

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Publication number
FR2665377A1
FR2665377A1 FR9009898A FR9009898A FR2665377A1 FR 2665377 A1 FR2665377 A1 FR 2665377A1 FR 9009898 A FR9009898 A FR 9009898A FR 9009898 A FR9009898 A FR 9009898A FR 2665377 A1 FR2665377 A1 FR 2665377A1
Authority
FR
France
Prior art keywords
main
frequency converter
bowl
frequency
centrifugal
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
FR9009898A
Other languages
French (fr)
Other versions
FR2665377B1 (en
Inventor
Gay Daniel
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.)
Guinard Centrifugation
Original Assignee
Guinard Centrifugation
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 Guinard Centrifugation filed Critical Guinard Centrifugation
Priority to FR9009898A priority Critical patent/FR2665377B1/en
Priority to EP19910401881 priority patent/EP0469944B1/en
Priority to DE1991610210 priority patent/DE69110210T2/en
Priority to JP3213024A priority patent/JPH04229098A/en
Publication of FR2665377A1 publication Critical patent/FR2665377A1/en
Application granted granted Critical
Publication of FR2665377B1 publication Critical patent/FR2665377B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
    • B04B1/2016—Driving control or mechanisms; Arrangement of transmission gearing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B9/00—Drives specially designed for centrifuges; Arrangement or disposition of transmission gearing; Suspending or balancing rotary bowls
    • B04B9/02—Electric motor drives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
    • B04B2001/2075—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl with means for recovering the energy of the outflowing liquid

Abstract

a) Décanteuse centrifuge. b) Les deux moteurs 1 et 6 du bol 5 et de la vis 8 sont reliés par des variateurs de fréquence 9 et 10 dont les circuits de courant continu sont reliés entre eux. c) Industrie chimique.a) Decanter centrifuge. b) The two motors 1 and 6 of the bowl 5 and of the screw 8 are connected by frequency variators 9 and 10 whose direct current circuits are connected to each other. c) Chemical industry.

Description

Décanteuse centrifuge à récupération d'énergie.Centrifugal decanter with energy recovery.

La présente invention se rapporte aux décanteuses centrifuge comprenant une vis convoyeuse contenue dans un bol, notamment cylindroconique, de même axe principal que la vis Le bol est entraîné en rotation par un moteur électrique principal à une vitesse différente de la vis qui est entraî-  The present invention relates to centrifugal decanters comprising a conveyor screw contained in a bowl, in particular cylindroconic bowl, having the same main axis as the screw. The bowl is rotated by a main electric motor at a speed different from the screw which is driven.

née en rotation par un moteur électrique secondaire et par un réducteur Une partie de l'énergie d'entraînement correspon- dant au freinage de l'arbre d'entrée du réducteur est dissi-10 pée et est donc perdue.  A part of the drive energy corresponding to the braking of the input shaft of the gearbox is dissipated and is thus lost.

L'invention pallie cet inconvénient par une décan-  The invention overcomes this disadvantage by a decan-

teuse centrifuge comprenant des variateurs de fréquence prin-  centrifugal machine comprising primary frequency converters

cipal et secondaire dont les sorties sont reliées respective-  and secondary school, the outputs of which are respectively connected

ment aux moteurs principal et secondaire Les circuits de  primary and secondary engines.

courant continu des deux variateurs sont reliés électrique- ment entre eux.  two drives are electrically connected to each other.

Grâce au couplage des circuits continus des varia-  Thanks to the coupling of the continuous circuits of the varia-

teurs de fréquence, on récupère l'énergie du moteur secon-  frequency, the energy of the secondary motor is recovered.

daire travaillant en frein et on transmet cette énergie au  working in brake and this energy is transmitted

moteur principal.main engine.

Une diode est montée entre le variateur de fré-  A diode is connected between the frequency converter

quence secondaire et le variateur de fréquence principal de  secondary frequency and the main frequency converter

manière à interdire le passage du courant continu du varia-  in order to prevent the passage of the direct current of the varia-

teur de fréquence principal au variateur de fréquence secon-  main frequency converter to the frequency converter

daire et à ne permettre le passage du courant que dans le  to allow the passage of the current only in the

sens opposé.opposite.

Au dessin annexé, donné uniquement à titre  In the attached drawing, given only for

d'exemple:For example:

La figure unique est un schéma d'une décanteuse  The single figure is a diagram of a decanter

centrifuge suivant l'invention.centrifuge according to the invention.

La décanteuse centrifuge comprend un moteur princi- pal 1 entraînant par une courroie 2 un arbre principal 3 en rotation L'arbre fait tourner la couronne extérieure d'un réducteur 4 et entraîne ainsi un bol 5 cylindroconique en ro- tation.10 Un moteur secondaire 6 entraîne un arbre secondaire 7 qui, par l'intermédiaire du réducteur 4, entraîne une vis 8  The centrifugal decanter comprises a main motor 1 driving by a belt 2 a main shaft 3 in rotation The shaft rotates the outer ring of a gearbox 4 and thus drives a cylindroconic bowl rotationally rotating. 6 drives a secondary shaft 7 which, via the gearbox 4, drives a screw 8

à l'intérieur du bol cylindroconique à une vitesse de rota-  inside the cylindroconic bowl at a rotational speed

tion supérieure à celle à laquelle tourne le bol 5 La sortie  higher than that at which the bowl rotates

d'un variateur de fréquence principal 9 est reliée électri-  of a main frequency converter 9 is electrically connected

quement au moteur principal 1 La sortie d'un variateur de fréquence secondaire 10 est reliée électriquement au moteur électrique secondaire 6 Les bornes positives et négatives  The output of a secondary frequency converter 10 is electrically connected to the secondary electric motor 6 The positive and negative terminals

des circuits de courant continu des deux variateurs de fré-  DC circuits of both frequency converters

quence 9 et 10 sont reliées entre elles, une diode 11 étant montée entre les deux bornes positives de manière à autoriser le passage du courant continu du variateur de fréquence 10 au  9 and 10 are connected to each other, a diode 11 being connected between the two positive terminals so as to allow the direct current of the frequency converter 10 to pass through.

variateur de fréquence 9, mais à l'interdire en sens opposé.  frequency variator 9, but to prohibit it in the opposite direction.

En fonctionnement, l'énergie de freinage récupérée par le variateur de fréquence 10 est transmise par l'intermédiaire du variateur de fréquence 9 au moteur 1, au  In operation, the braking energy recovered by the frequency converter 10 is transmitted via the frequency converter 9 to the motor 1, the

lieu d'avoir à être dissipée dans des résistances ou autres.  instead of having to be dissipated in resistances or others.

Claims (2)

REVENDICATIONS 1 Décanteuse centrifuge à bol ( 5) entraîné en rotation par un moteur électrique principal ( 1) et à vis ( 8) entraîné en rotation et par un moteur électrique secondaire ( 6) et par un réducteur ( 4) à une vitesse différente de celle du bol ( 5), caractérisée par des variateurs de fréquence principal ( 9) et secondaire ( 10) dont les sorties sont reliées respectivement aux moteurs principal ( 1) et secondaire ( 6), les circuits de  1 Centrifugal bowl centrifugal decanter (5) driven in rotation by a main electric motor (1) and screw (8) driven in rotation and by a secondary electric motor (6) and by a gearbox (4) at a speed different from that of the bowl (5), characterized by main (9) and secondary (10) frequency converters whose outputs are respectively connected to the main (1) and secondary (6) motors, the courant continu des deux variateurs ( 9,10) étant reliés élec-  direct current of the two drives (9,10) being electrically connected triquement entre eux.between them. 2 Décanteuse centrifuge selon la revendication 1,  Centrifugal decanter according to Claim 1, caractérisée par une diode ( 11) entre le variateur de fré-  characterized by a diode (11) between the frequency converter quence secondaire ( 10) et le variateur de fréquence principal ( 9) montée de manière à interdire le passage du courant continu du variateur de fréquence principal ( 9) au variateur  secondary phase (10) and the main frequency converter (9) mounted so as to prevent the direct current flow from the main frequency converter (9) to the drive de fréquence secondaire ( 10).secondary frequency (10).
FR9009898A 1990-08-02 1990-08-02 CENTRIFUGAL DECANTER WITH ENERGY RECOVERY. Expired - Fee Related FR2665377B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR9009898A FR2665377B1 (en) 1990-08-02 1990-08-02 CENTRIFUGAL DECANTER WITH ENERGY RECOVERY.
EP19910401881 EP0469944B1 (en) 1990-08-02 1991-07-08 Energy recovery for a decanter centrifuge
DE1991610210 DE69110210T2 (en) 1990-08-02 1991-07-08 Decanter centrifuge with energy recovery.
JP3213024A JPH04229098A (en) 1990-08-02 1991-07-31 Centrifugal decounter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9009898A FR2665377B1 (en) 1990-08-02 1990-08-02 CENTRIFUGAL DECANTER WITH ENERGY RECOVERY.

Publications (2)

Publication Number Publication Date
FR2665377A1 true FR2665377A1 (en) 1992-02-07
FR2665377B1 FR2665377B1 (en) 1993-09-03

Family

ID=9399363

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9009898A Expired - Fee Related FR2665377B1 (en) 1990-08-02 1990-08-02 CENTRIFUGAL DECANTER WITH ENERGY RECOVERY.

Country Status (4)

Country Link
EP (1) EP0469944B1 (en)
JP (1) JPH04229098A (en)
DE (1) DE69110210T2 (en)
FR (1) FR2665377B1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5203762A (en) * 1990-12-20 1993-04-20 Alfa-Laval Separation, Inc. Variable frequency centrifuge control
US5681256A (en) * 1994-11-10 1997-10-28 Nkk Corporation Screw decanter centrifuge having a speed-torque controller
DE19806374C1 (en) * 1998-02-17 1999-07-01 Westfalia Separator Ag Split drive for large centrifugal decanter
US6981940B2 (en) * 2003-06-23 2006-01-03 Abb Inc. Centrifuge control system with power loss ride through
ES2532538T3 (en) * 2010-09-13 2015-03-27 Hiller Gmbh Drive device in an endless screw centrifuge
DE102016116391B3 (en) * 2016-09-01 2018-02-01 Gea Mechanical Equipment Gmbh Method for monitoring a worm centrifuge

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2867378A (en) * 1954-09-16 1959-01-06 Int Combustion Holdings Ltd Centrifuging machines
FR2218142A1 (en) * 1973-02-19 1974-09-13 Robatel Slpi Asynchronous motor drive for centrifugal dryer - with frequency changer to facilitate starting and vary speed
FR2399151A1 (en) * 1971-01-05 1979-02-23 Dornier Ag ELECTRICAL DEVICE FOR DRIVING HIGH ROTATION SPEED APPLIANCES SUCH AS ULTRACENTRIFUGE GAS

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4141488A (en) * 1977-08-18 1979-02-27 Koninklijke Nederlandse Papierfabrieken N.W. Centrifuge
DE3313167A1 (en) * 1983-04-12 1984-10-25 Mantec Gesellschaft für Automatisierungs- und Handhabungssysteme mbH, 8510 Fürth INDUSTRIAL ROBOT WITH ELECTRIC THREE-PHASE INDIVIDUAL DRIVES
DE3641569C1 (en) * 1986-12-05 1988-03-24 Skf Textilmasch Komponenten Circuit arrangement for spinning or twisting machines

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2867378A (en) * 1954-09-16 1959-01-06 Int Combustion Holdings Ltd Centrifuging machines
FR2399151A1 (en) * 1971-01-05 1979-02-23 Dornier Ag ELECTRICAL DEVICE FOR DRIVING HIGH ROTATION SPEED APPLIANCES SUCH AS ULTRACENTRIFUGE GAS
FR2218142A1 (en) * 1973-02-19 1974-09-13 Robatel Slpi Asynchronous motor drive for centrifugal dryer - with frequency changer to facilitate starting and vary speed

Also Published As

Publication number Publication date
DE69110210D1 (en) 1995-07-13
FR2665377B1 (en) 1993-09-03
EP0469944A3 (en) 1992-05-06
EP0469944B1 (en) 1995-06-07
EP0469944A2 (en) 1992-02-05
DE69110210T2 (en) 1995-10-26
JPH04229098A (en) 1992-08-18

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