EP2143841A2 - Système de refroidissement - Google Patents

Système de refroidissement Download PDF

Info

Publication number
EP2143841A2
EP2143841A2 EP09163601A EP09163601A EP2143841A2 EP 2143841 A2 EP2143841 A2 EP 2143841A2 EP 09163601 A EP09163601 A EP 09163601A EP 09163601 A EP09163601 A EP 09163601A EP 2143841 A2 EP2143841 A2 EP 2143841A2
Authority
EP
European Patent Office
Prior art keywords
water
cooling
heat
circuit
return
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Withdrawn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
EP09163601A
Other languages
German (de)
English (en)
Other versions
EP2143841A3 (fr
Inventor
Martin Trittler
Rainer Müller
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.)
Voith Patent GmbH
Original Assignee
Voith Patent 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 Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of EP2143841A2 publication Critical patent/EP2143841A2/fr
Publication of EP2143841A3 publication Critical patent/EP2143841A3/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/20—Waste heat recovery

Definitions

  • the invention relates to a cooling circuit for removing excess process and / or machine heat, such as in a paper, board or Tissuemaschine.
  • cooling liquid that performs cooling tasks on the machine are mostly oily, oily or other liquids with special properties, such as e.g. that they have a high boiling point and should take over simultaneous lubrication tasks or at least protect against corrosion.
  • a cooling system of this kind is used in the EP1048781B1 described.
  • the contamination of the process water is prevented by a closed primary circuit, a closed secondary circuit and a tertitiärer cooling water line for process water heating are available.
  • a disadvantage of this cooling system is that the waste heat can be transmitted to the tertiary cooling water circuit only to a certain extent by the secondary heat exchanger. Thus, only a part of the potential energy for the heating of the process water is available.
  • Another disadvantage is the increased water consumption due to the higher amount of cooling water that must flow through the heat exchanger and causes more water to evaporate in the cooling tower.
  • the secondary circuit of this cooling system is therefore an open system.
  • An oil - water separation device in the cooling water tank prevents oil from getting into the process water in the event of a leak at the oil coolers.
  • the waste heat of the secondary circuit is thus directly, without the detour via e.g. a heat exchanger used.
  • the object is achieved by means of the cooling system with the features of claim 1 or by means of a cooling method with the features of claim 8.
  • a cooling system for removing excess process and / or engine heat that at least one closed primary cooling circuit (primary circuit), which dissipates excess heat, per primary circuit at least one primary fluid / water heat exchanger to transfer the heat to at least one secondary cooling circuit (secondary circuit), each secondary circuit at least one cooling water tank with a device for separating oil, a removal point for process water, a cooling water drain, a cooling device for obtaining flow cooling water and min. A fresh water inlet.
  • primary circuit closed primary cooling circuit
  • secondary circuit secondary circuit
  • each secondary circuit at least one cooling water tank with a device for separating oil, a removal point for process water, a cooling water drain, a cooling device for obtaining flow cooling water and min.
  • the at least one cooling return water container has two regions, a first region and a second region, which can be separated from one another by means of a separating device.
  • This design of the cooling system ensures that even in the event of an accident, e.g. leakage of a primary heat exchanger, the cooling fluid (e.g., oil) coming from the primary circuit can not get into the process water and / or auxiliary water, and the paper machine need not be shut down in the event of an accident.
  • the cooling fluid e.g., oil
  • the separating device preferably consists of a partition wall, a pipe connection between the first region and the second region and a valve which is closed in the event of a malfunction and thus reliably prevents cooling water from passing from one region to the other.
  • the separator may also be a slider in the partition.
  • the secondary cooling water return coming from the heat exchangers, introduces the heated secondary return cooling water into the first region of the recirculating water tank in front of the oil separator, and the cooling water drain and the process water is withdrawn in an area behind the oil separator. Wherein the cooling water drainage takes place in the first area and the process water is removed from the second area of the cooling water return tank.
  • the secondary cooling water flows to the cooling device, preferably a cooling tower which releases the excess heat to the ambient air.
  • the water flow of the cooling water feed / cooling water return is divided in the cooling water return tank into the process water flow and the cooling water outflow stream and in the cooling tower into a cooling water flow and a steam flow.
  • To compensate for the diverted amounts of cooling water fresh water must be supplied to the cooling system according to the amount of process water withdrawn and the evaporation losses in the secondary cooling circuit.
  • the diversion of the process water causes the performance of the cooling tower can be made smaller. On the one hand, the amount of water to be cooled is lower, on the other hand there is an additional temperature reduction by the fresh water inlet, which compensates for the amount of process water taken.
  • the machine according to the invention must not be shut down forcibly, since in an interruption of the secondary circuit can be controlled independently of the process water extraction. So that the process water continues to have a certain temperature, the required heat energy is supplied from the outside. This can be done to some extent by the heating of the fresh water in the cooling of the ancillaries.
  • the excess process and / or engine heat of the secondary circuit must be dissipated in an interruption to 100% through the cooling device.
  • FIG. 1 shows a cooling system according to the invention a paper machine with three parallel primary circuits, each with a flow 3.1 - 3.3 and return 3.4 -3.6, the devices 3.7 - 3.9 (eg bearings, press rolls, other machine parts, etc.) by means of a flowing fluid - here oil - cool.
  • each primary fluid / water heat exchanger 2.1 - 2.3 In the primary circuits are located between the headers 3.1 - 3.3 and the return runs 3.4 - 3.6 each primary fluid / water heat exchanger 2.1 - 2.3, with the aid of which the waste heat is transferred to another secondary cooling circuit 2.
  • the primary cooling circuit 3 forms a closed circuit with respect to the secondary cooling circuit 2, only with the heat exchanger is there an indirect contact point.
  • the primary heat exchangers 2.1 - 2.3 are connected in parallel to each other and connected to each other via the flow 4 and the return 5.
  • the heated cooling water is introduced via the return line 5 into the upper region of a cooling water reservoir 6.
  • the cooling water return container 6 is subdivided into two subregions 6a, 6b, wherein a device for separating off oil is integrated in the first region 6a.
  • the two areas 6a, 6b are normally connected to one another and can be separated from one another in the event of a fault, for example if the cooling water is contaminated with oil become.
  • the separating device can consist of a dividing wall 12 in the cooling water reservoir 6 and a pipe connection 16 with a valve 17.
  • a closable opening in the partition wall is conceivable or a pumping device which pumps the cooling water from the first area 6a into the second area 6b.
  • the process water 10 is withdrawn from the second sub-area 6b, wherein hot cooling water flows in accordance with the withdrawn amount of process water via the connection of the areas 6a, 6b.
  • the required cooling water for the secondary circuit is taken from the first area 6a of the recirculating water tank 6 and from there to a cooling device, here a cooling tower 8 with a fan to support the cooling air flow, pumped. From there it reaches the heat exchangers 2.1 - 2.3 via the cooling water supply. Between the cooling tower 8 and the heat exchangers 2.1 - 2.3 is usually still a cooling water circulation tank 19 with fresh water inlet 15, a Pumpe18 and a filter.
  • the cooling tower releases the excess heat in the form of steam to the environment, the resulting loss of water is compensated via the fresh water inlet 15.
  • the withdrawn amount of process water is compensated in normal operation via the fresh water inlet 15.
  • the recirculating water tank 6 is provided in the second area 6b with a fresh water inlet 14 to compensate for the removal of the process water 10 with the valve 17 closed.
  • the waste heat from various units can still be used before running in, eg compressors, pumps, etc
  • the residual heat of the cooling water can be used on the way to the cooling tower. This plays a role especially if the direct Use of the return energy from the return 5 in case of failure can not be used.

Landscapes

  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
EP09163601.9A 2008-07-07 2009-06-24 Système de refroidissement Withdrawn EP2143841A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008040216A DE102008040216A1 (de) 2008-07-07 2008-07-07 Kühlsystem

Publications (2)

Publication Number Publication Date
EP2143841A2 true EP2143841A2 (fr) 2010-01-13
EP2143841A3 EP2143841A3 (fr) 2013-11-06

Family

ID=41134540

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09163601.9A Withdrawn EP2143841A3 (fr) 2008-07-07 2009-06-24 Système de refroidissement

Country Status (2)

Country Link
EP (1) EP2143841A3 (fr)
DE (1) DE102008040216A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102513334A (zh) * 2011-12-31 2012-06-27 珠海新市节能环保科技有限公司 用于垃圾处理设备的冷却水循环系统
AT13592U1 (de) * 2012-02-14 2014-04-15 Metso Paper Inc System zum Kühlen eines elektrischen Geräts in einer Faserbahnmaschine
EP2835467A3 (fr) * 2013-08-09 2015-03-11 KÜHNE + VOGEL Prozessautomatisierung Antriebstechnik GmbH Réfrigérant comme source de chaleur

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1048781B1 (fr) 1999-04-30 2005-11-09 Voith Paper Patent GmbH Système de refroidissement pour une machine à papier ou carton

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3837133C1 (fr) * 1988-11-02 1990-04-12 Tch Thermo-Consulting-Heidelberg Gmbh, 6900 Heidelberg, De
DE19511086A1 (de) * 1995-03-25 1996-09-26 Schwaebische Huettenwerke Gmbh Dampfbeheizte Walze mit Kühlung
FI102625B (fi) * 1997-05-30 1999-01-15 Valmet Corp Menetelmä ja laite lämmön talteenottamiseksi paperikoneen tai vastaava n tyhjöjärjestelmän poistoilmasta
DE19731852A1 (de) * 1997-07-24 1999-01-28 Asea Brown Boveri Generatorkühlsystem

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1048781B1 (fr) 1999-04-30 2005-11-09 Voith Paper Patent GmbH Système de refroidissement pour une machine à papier ou carton

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102513334A (zh) * 2011-12-31 2012-06-27 珠海新市节能环保科技有限公司 用于垃圾处理设备的冷却水循环系统
CN102513334B (zh) * 2011-12-31 2015-03-25 胡昀 用于垃圾处理设备的冷却水循环系统
AT13592U1 (de) * 2012-02-14 2014-04-15 Metso Paper Inc System zum Kühlen eines elektrischen Geräts in einer Faserbahnmaschine
EP2835467A3 (fr) * 2013-08-09 2015-03-11 KÜHNE + VOGEL Prozessautomatisierung Antriebstechnik GmbH Réfrigérant comme source de chaleur

Also Published As

Publication number Publication date
DE102008040216A1 (de) 2010-01-14
EP2143841A3 (fr) 2013-11-06

Similar Documents

Publication Publication Date Title
DE102006012866B4 (de) Verfahren zur Abtrennung leichtflüchtiger Komponenten aus einem Stoffgemisch sowie Vorrichtung zur Durchführung dieses Verfahrens
DE2046750A1 (de) Kuhlsystem fur Modulbausteine
DE10354454B4 (de) Temperiervorrichtung für Druckmaschinen
DE60308234T2 (de) Schmierungssystem und Verfahren zur Modifizierung
EP1060881A1 (fr) Dispositif et procédé pour lubrifier et refroidir un palier à roulement
DE102014107294A1 (de) Zentrifuge
DE2160120A1 (de) Dampfrückgewinnungssystem
DE3750099T2 (de) Anlage zur Übertragung der Wärme zwischen einer Flüssigkeit und einem Organ zum Abkühlen oder zum Erwärmen durch Herabsetzen des Drucks der Flüssigkeit in Bezug auf den atmosphärischen Druck.
DE1937122A1 (de) Rohrfoermige Waermeuebertragungsvorrichtung
EP2143841A2 (fr) Système de refroidissement
DE19812149A1 (de) Kühlwalze
DE60307456T2 (de) Verbessertes reinigungssystem
DE202015106919U1 (de) Umrichterkühlsystem
EP2299186B1 (fr) Procédé de transport d'énergie calorifique dans une canalisation d'eaux usées
DE2626788A1 (de) Kondensatoranlage, insbesondere vorrichtung zum kondensieren des abdampfes eines kraftwerkes
DE2700893A1 (de) Waermepumpe
DE3507798A1 (de) Verfahren zum transport von waerme in gebaeuden
DE69209365T2 (de) Schutzvorrichtung gegen Verstopfungen von Platten-Wärmetauschern
EP1048781B1 (fr) Système de refroidissement pour une machine à papier ou carton
DE4337944C2 (de) Verfahren zum Betreiben eines Siphons sowie Siphon für die Papierindustrie
AT516700B1 (de) Anordnung aus wenigstens einem Schneid- oder Bohrwerkzeug, insbesondere Diamantwerkzeug, für die Betonbearbeitung und wenigstens einer Kühleinheit
WO2008095628A1 (fr) Procédé et dispositif de récupération de chaleur
DE1285456B (de) Waermeaustauscher und Gasabscheider zur Abfuehrung der Waerme und Entfernung der Gaseinschluesse aus Schmieroel
DE102022114408B3 (de) Anlage und Verfahren zur Versorgung einer Schmierstelle mit Schmieröl
DE2626787A1 (de) Kondensatoranlage, insbesondere vorrichtung zum kondensieren des abdampfes eines kraftwerkes

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR

RIC1 Information provided on ipc code assigned before grant

Ipc: H02K 9/00 20060101ALI20130930BHEP

Ipc: D21F 5/20 20060101AFI20130930BHEP

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20140507