EP2672081A2 - Système de pompage haute pression pour l'acheminement de fluides chauds - Google Patents

Système de pompage haute pression pour l'acheminement de fluides chauds Download PDF

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Publication number
EP2672081A2
EP2672081A2 EP13169518.1A EP13169518A EP2672081A2 EP 2672081 A2 EP2672081 A2 EP 2672081A2 EP 13169518 A EP13169518 A EP 13169518A EP 2672081 A2 EP2672081 A2 EP 2672081A2
Authority
EP
European Patent Office
Prior art keywords
pump
hot
pressure pump
medium
pressure
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Withdrawn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
EP13169518.1A
Other languages
German (de)
English (en)
Other versions
EP2672081A3 (fr
Inventor
Jürgen GANSER
Harald Moosandl
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.)
Envi Con Bavaria GmbH
Original Assignee
Envi Con Plant Engineering 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 Envi Con Plant Engineering GmbH filed Critical Envi Con Plant Engineering GmbH
Publication of EP2672081A2 publication Critical patent/EP2672081A2/fr
Publication of EP2672081A3 publication Critical patent/EP2672081A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K13/00—General layout or general methods of operation of complete plants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D11/00—Feed-water supply not provided for in other main groups
    • F22D11/02—Arrangements of feed-water pumps

Definitions

  • the invention relates to a high-pressure pumping system for conveying hot media with the features specified in the preamble of claim 1.
  • Such a high-pressure pumping system as used in plant and power plant construction, comprises as a basic components a storage tank for storing a hot medium, such as hot water, and a high pressure pump for this hot medium, in a main line between the storage tank and a with the hot medium to be supplied process is arranged.
  • a hot medium such as hot water
  • high pressure pumps e.g. In the water-steam cycle of power plants are used, are usually made of thick-walled components.
  • the usual process parameters namely pressure and temperature have been increased in recent years. This leads to larger wall thicknesses of the pump components.
  • hot and cold running devices are known for large power plants, which dissipate by opening a valve on the pressure side of the pump medium in a decompressor. This creates a flow through the pump in the direction of the expander. The flow, however, depends on the pressure in the feed tank.
  • cold condensate for temperature control is fed directly into the main line of the pump.
  • a defined mixture of the cold condensate in the main line is not given, since the dimensions of the main line are large compared to the supplied mass flow of medium for tempering.
  • the invention is based on the object to improve a high-pressure pumping system for conveying hot media so that the pump is effectively protected against critical system conditions.
  • the invention is therefore characterized in that the pump acting as a separate hot and cold running pump generates a forced flow of the warm or cold-running pump with a correspondingly tempered medium.
  • the tempering medium defined by a mixture of cold and hot medium can be appropriately tempered. The medium for cold and warm up of the pump remains in the system and does not have to be removed.
  • an inflow line for a cold medium in the Temperier effetszweig be provided, which is preferably provided with an inflow control for the defined mixing of cold medium in the hot medium in the Temperier effetszweig.
  • the temperature control medium can be optimally adapted in its temperature to the hot or cold running process.
  • a temperature-control branch preferably opens between the main pump and the main pump.
  • FIG. 1 shown high-pressure pumping system for conveying hot media for conveying hot media, such as water at a temperature of 130 ° C and a pressure of 2.7 bar
  • hot media such as water at a temperature of 130 ° C and a pressure of 2.7 bar
  • a storage tank 1 in which the hot medium is stored, for example, for the water-steam cycle of power plants.
  • the return line 2 is shown, via which the steam supplied by the steam turbine is introduced via a steam feed 3 into the feed tank 1.
  • From the storage tank 1 performs a designated as a whole with 4, reinforced in the drawing shown main line via a shut-off valve 5, a high-pressure pump 6 to promote the hot medium and another shut-off valve 7 back to the process.
  • a media line 10 leads from the storage tank 1 to two parallel hot and cold water pumps 11.1, 11.2, the output again to a common Media line 12 is united.
  • a volume flow meter 13 for determining the volume flow in the Temperier effetszweig 9 is used.
  • the media line 12 branches into a first line branch 14, which opens in the conveying direction of the high-pressure pump 6 in front of this in the main line 4.
  • the second line branch 15 opens into the main line 4 after the high-pressure pump 6.
  • an electromotive-operated gate valve unit 16 is used for opening and closing the line branch 14.
  • the second line branch 15 sits a quick-closing unit 17th
  • a safety valve 18 is connected to the media line 12 between the volume flow meter 13 and the outgoing line branches 14, 15.
  • tempering For temperature control of the funded by the Temperierpumpsystem 8 tempering serves a temperature control 19, which has an opening into the media line 10 between feed tank 1 and hot and cold driving pump assembly 11.1, 11.2 inflow line 20. This leads to cold tempering, such as cold water from a reservoir not shown to the Temperierpumpsystem 8 zoom.
  • temperature sensor 21 To regulate the temperature of the temperature control in the Temperierpumpsystem 8 supplied temperature sensor 21 is connected to the media line 12, which controls the flow of cold medium via a control valve 22 in the inflow line 20.
  • a flow meter 23 is connected downstream.
  • the Temperierpumpsystem 8 an independent circuit is constructed, the pumps 11.1, 11.2 as a hot and cold traction pump promote the temperature control with a constant flow rate before and behind the high-pressure pump.
  • the cold-adjusted temperature control medium can quickly reach all relevant points of the high-pressure pump 6.
  • the time available is determined by the operation of the system after a failure of the high-pressure pump 6 and must be such that a pressure drop in the feed tank 1, which is a mixed preheater in the boiling state in the example shown, does not lead to evaporation of the pump contents.
  • the temperature control 19 By admixing cold condensate via the inflow line 20 while the temperature control is brought to a desired temperature. This is done by the temperature control 19, the temperature sensor 21 and the hot and cold driving pumps 11.1, 11.2, which act simultaneously as a conveyor and as a mixer. As a result, the desired temperature of the temperature control medium is already set reliably before being fed to the main line 4 of the high-pressure pump 6.
  • the Temperierpumpsystem 8 Since the Temperierpumpsystem 8 is acted upon by the high-pressure pump 6 in normal operation with the full discharge pressure of the high-pressure pump 6, the Temperierpumpsystem 8 by means of a pressure switch triggered quick-closing unit 17 and the residual safety valve 18 against the calculation pressure of the system behind the high-pressure pump 6 hedged.
  • Fig. 2 illustrated embodiment of the high-pressure pumping system differs from that of Fig. 1 explained configuration only in that the high-pressure pump 6 functioning as the main pump is supplemented by a roughing pump 30 arranged upstream in the main line 4 upstream.
  • High-pressure pump 6 and backing pump 30 are actuated by a common drive 31, wherein between the drive 31 and the backing pump 30, a reduction gear 32 is turned on.
  • the first line branch 14 opens in this embodiment in the main line 4 between forepump 30 and high-pressure pump 6. All remaining components of the system correspond to those of the embodiment according to Fig. 1 and are provided with identical reference numerals. To the description can be referred to the appropriate remarks in connection with the Fig. 1 to get expelled.
  • the feeding of the temperature control medium between forepump 30 and high-pressure pump 6 serves to effectively protect the high-pressure pump 6, since the temperature control can thereby quickly reach the high-pressure pump without delay.
  • cool temperature control medium is first conveyed backwards through the high-pressure pump 6 via the temperature-control pump system 8, and the temperature of the temperature-control medium is adjusted by adjusting the temperature control 19 the mixture ratio of the hot medium from the storage tank 1 and the cold medium from the inflow line 20 is raised until a housing temperature of about 95 to 100 ° C is reached. Subsequently, the high-pressure pump 6 can be put into its normal operating state.
  • hot medium from the feed tank 1 is first passed through the high-pressure pump 6 via the tempering pump system 8 and the temperature of the tempering medium of initially estimated at 200 ° C. and 18 bar through gradually stronger admixing of cool medium via the inflow line 20 lowered to cold driving conditions, for example, 100 ° C.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Reciprocating Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP13169518.1A 2012-06-05 2013-05-28 Système de pompage haute pression pour l'acheminement de fluides chauds Withdrawn EP2672081A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012209480A DE102012209480B4 (de) 2012-06-05 2012-06-05 Hochdruck-Pumpsystem zur Förderung heißer Medien

Publications (2)

Publication Number Publication Date
EP2672081A2 true EP2672081A2 (fr) 2013-12-11
EP2672081A3 EP2672081A3 (fr) 2017-07-19

Family

ID=48576741

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13169518.1A Withdrawn EP2672081A3 (fr) 2012-06-05 2013-05-28 Système de pompage haute pression pour l'acheminement de fluides chauds

Country Status (2)

Country Link
EP (1) EP2672081A3 (fr)
DE (1) DE102012209480B4 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108266346A (zh) * 2018-03-09 2018-07-10 北京首航艾启威节能技术股份有限公司 一种熔盐塔式光热电站汽动冷盐泵系统

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1426442B2 (de) * 1962-05-15 1973-11-22 Siemens Ag, 1000 Berlin U. 8000 Muenchen Wärmekraftanlage
US3467069A (en) * 1967-12-26 1969-09-16 Combustion Eng Recirculating type steam generator and pump arrangement
GB1510094A (en) * 1977-01-27 1978-05-10 Teplotekh Nii Im Dzerzhin V Steam turbine plant regenerative system
DE3304705A1 (de) * 1983-02-11 1984-08-16 Deutsche Babcock Werke AG, 4200 Oberhausen Verfahren und vorrichtung zur vermeidung der kavitation bei kreiselpumpen
DE4302486A1 (de) * 1993-01-29 1994-08-04 Abb Patent Gmbh Verfahren und Vorrichtung zum Betrieb des Wasser-Dampf-Kreislaufs eines Wärmekraftwerkes
DE19512466C1 (de) * 1995-04-03 1996-08-22 Siemens Ag Verfahren zum Betreiben eines Abhitzedampferzeugers sowie danach arbeitender Abhitzedampferzeuger
DE29607301U1 (de) * 1996-04-11 1996-07-11 Veag Vereinigte Energiewerke Ag, 12681 Berlin Anordnung zum Vorwärmen einer im Verbund betriebenen Pumpe, insbesondere einer Kesselspeisepumpe, wobei eine Anwärmleitung in die Pumpe eingebunden ist
DE19854383A1 (de) * 1998-11-25 2000-05-31 Asea Brown Boveri Verfahren und Anlage zur Vermeidung von Kavitation in einer Sattwasser fördernden Pumpe
DE10253640A1 (de) * 2002-11-14 2004-05-27 Vattenfall Europe Generation Ag & Co. Kg Verfahren und Anordnung zur Reduzierung der Speisewassertemperatur in einem Speisewasserbehälter eines Dampferzeugers
EP2211029A1 (fr) * 2008-04-22 2010-07-28 Siemens Aktiengesellschaft Installation à turbines à gaz et à vapeur

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Also Published As

Publication number Publication date
DE102012209480B4 (de) 2013-12-19
EP2672081A3 (fr) 2017-07-19
DE102012209480A1 (de) 2013-12-05

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