WO2015022060A1 - Désinfection dans une pompe centrifuge ou dans un système de pompage contenant au moins une pompe centrifuge - Google Patents

Désinfection dans une pompe centrifuge ou dans un système de pompage contenant au moins une pompe centrifuge Download PDF

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Publication number
WO2015022060A1
WO2015022060A1 PCT/EP2014/002139 EP2014002139W WO2015022060A1 WO 2015022060 A1 WO2015022060 A1 WO 2015022060A1 EP 2014002139 W EP2014002139 W EP 2014002139W WO 2015022060 A1 WO2015022060 A1 WO 2015022060A1
Authority
WO
WIPO (PCT)
Prior art keywords
pump
centrifugal pump
medium
pump system
temperature
Prior art date
Application number
PCT/EP2014/002139
Other languages
German (de)
English (en)
Inventor
Martin Schwarz
Daniel BÜNING
Original Assignee
Wilo Se
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 Wilo Se filed Critical Wilo Se
Priority to EP14747841.6A priority Critical patent/EP3033575A1/fr
Publication of WO2015022060A1 publication Critical patent/WO2015022060A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/0073—Arrangements for preventing the occurrence or proliferation of microorganisms in the water
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D1/06—Multi-stage pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D9/00—Priming; Preventing vapour lock
    • F04D9/004—Priming of not self-priming pumps
    • F04D9/005—Priming of not self-priming pumps by adducting or recycling liquid
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/02—Temperature
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/04—Disinfection

Definitions

  • the invention relates to a method for thermal disinfection in a drinking / drinking water, wastewater or other liquid media promotional
  • Centrifugal pump or pump system with at least one centrifugal pump which / has an opening to the suction side of the centrifugal pump or the pump system suction port and opening to the pressure side pressure port.
  • the media used in the pump or in the pump system may be, for example, drinking or service water,
  • Disinfection method disadvantageous that the materials / components can be chemically attacked in the pump or in the pump system. This can lead to material damage, leaks and shortened life. In addition, unwanted and harmful chemical
  • the object of the invention is to provide a method for disinfection in centrifugal pumps and pump systems with at least one centrifugal pump, which is technically less expensive and requires no chemicals.
  • the medium via a the pressure side with the suction side hydraulically temporarily short-circuiting within the centrifugal pump or the pump system befindliches connection such in circulation promotes that the medium and thereby the media-contacting parts of the centrifugal pump or the pump system to a predetermined, disinfecting temperature, e.g. 70 ° C is heated, and this unfolds over a certain exposure time in particular of at least 3 minutes, a disinfecting effect.
  • a predetermined, disinfecting temperature e.g. 70 ° C
  • shut-off valves are located directly on the pump in order to ensure convenient removal during servicing.
  • Typical elements are valves, especially shut-off valves for simplified service work, control valves or also pressure reducing valves, furthermore non-return valves, especially gravity brakes or
  • Membrane filter furthermore sensor technology, especially pressure or flow sensors or water meter.
  • the warm-up time is significantly shortened because of the high
  • the maximum temperature achievable by the process is increased because the shortened warm-up time does not heat the entire casing of the centrifugal pump or the pump system, but instead
  • the temperature distribution through the promotion in the circulation is much more homogeneous, so that a more uniform heating of the medium and the media-contacting pump part takes place. Accordingly, the effect of the later disinfection is also more uniform, and the more secure the detection of the medium temperature is with e.g. only one measuring point.
  • the proposed method can be applied to all centrifugal pumps such as single-stage horizontal pumps and pump systems with at least one centrifugal pump, such as pressure booster systems with multistage vertical centrifugal pumps. It is advantageous if suction and pressure side are spatially close to each other, because then the connection between the two can be made relatively easy. Preferably, this connection between the pressure and the suction side is an externally operable shut-off device for opening and closing the connection.
  • the obturator in be stored a pump outer wall of the pump housing of the centrifugal pump, as shown in FIG. 1.
  • the medium may be a specially introduced for the process medium such as demineralized water or disinfectant or cleaning solution, for. when heating, to increase the disinfecting effect or to achieve positive side effects. This is particularly advantageous when the
  • the medium delivered in normal operation of the centrifugal pump or the pump system can also be used, or a mixture of both. If necessary, therefore, the centrifugal pump or the pump system must be closed both at the suction connection and at the pressure connection, a part of the medium conveyed in normal operation be drained off, and optionally the desired medium be introduced simultaneously.
  • the temperature of the medium is detected, whether by direct measurement via a sensor in the medium or on the pump casing, be it an observed quantity such as the power consumption and a fluid temperature calculation model or an estimated value.
  • the detection is set up only temporarily, e.g. for the period of the procedure with a contact sensor.
  • a measuring point is preferably selected which has a high heat transfer from the medium to the measuring point.
  • a measuring point which receives a high heat transfer from the medium to this measuring point by special design and appropriate choice of materials. This results in a reliable measurement result.
  • This detected temperature value is included in a control of the pump operation, so that the predetermined temperature of, for example, 70 ° C complied becomes.
  • the speed is selected depending on the difference between the detected temperature and the predetermined temperature; During warm-up, therefore, the maximum speed is selected in order to introduce as much heat as possible into the medium. If there is no speed control, eg a two-point control can be realized by switching the centrifugal pump on and off.
  • a temporal temperature profile is then created from predetermined temperatures or detected temperatures, such as e.g. a recorded media temperature of 70 ° C over a period of at least 3 minutes, see Fig. 2.
  • this method is a proof of the
  • This proof can therefore be in the form of a protocol in which the recorded temperature profile is displayed.
  • a material is used that changes its state as a result of the influence of temperature over the necessary period of time. This can e.g. a coating or even a sticker that discolors. The position of this material is selected analogously to the measuring point so that a high heat transfer from the medium to the measuring point is ensured.
  • Subsequent cooling of the reaction space takes place e.g. by draining the heated medium and flowing cold medium, for. B. by opening a drain valve, which is preferably the shut-off valve simultaneously.
  • this also takes place in the circulation within the centrifugal pump or the pump system, so that a uniform cooling is achieved by homogeneous temperature distribution, and thus the temperature detection works more reliable.
  • the heat transfer to the medium is kept low, z. B. by an intermittent operation by turning on and off the centrifugal pump or by speed control of
  • Centrifugal pump at low speeds For the protection of the operator and the pump material is preferably waited until the medium, e.g. cooled to 40 ° C, see Fig. 2.
  • the opening of the short-circuiting connection and the start of the control operation along the temperature profile is not done manually, but is automated.
  • This requires in particular an electric valve in place of the shut-off valve, as well as automated devices for
  • Fig. 2 is a temperature / time diagram.
  • a one, two or more stages engine centrifugal pump 1 has in
  • the pump shaft is from one above the pump 1
  • Pump shaft is connected or merges coaxially into the pump shaft, possibly via a coupling.
  • the suction side 1 has a suction chamber, which is connected to the suction nozzle 13. Further, located above the uppermost stage housing 6, a pressure chamber 0 with a pressure port, wherein the drinking or service water is conveyed from the pressure chamber via the annular space 9 down to the pressure port.
  • the annular space 9 also surrounds the lower suction chamber 11, wherein the
  • Suction chamber is separated from the annular space by a cylindrical wall in which there is a connection opening which forms a connection 15 between the annular space 9 and the suction chamber 11. If the connection 15 or the connection opening is opened, then the pumped medium flows in the circuit through the pump according to the three arrows 17.
  • these check valves are located directly on the pump to be in
  • shut-off (check valve) 18 To close the connection 15 and the connection opening is a shut-off (check valve) 18 with a locking member, which in the
  • Rotary adjustment is brought into the connection opening to close the connection 15 for normal operation.
  • the medium circulation enabling connection 15 may instead of a
  • Connection opening also be formed by a connecting channel. This depends on the design of the pump.
  • a check valve is then arranged in the connecting channel, which can be actuated from the outside.
  • the shut-off valve 18 and the locking member is electrically actuated.
  • the pressure-side service valve is closed to prevent water loss.
  • a circuit in the pump is made possible by opening the connection 15, eg by unscrewing the locking member. Compared to heating without circulation, the following values are increased:
  • the circulating in the pump water is preferably heated to 70 ° C.
  • the achieved water temperature of> 70 ° C for e.g. held for three minutes by the heat supply is controlled by the pump speed and thereby the pump is disinfected, as shown in FIG. 2.
  • this process is monitored, in particular via temperature sensors.
  • the compliance with these specifications is preferably documented directly on the basis of a proof. This document may include a graph of the temperature history over time.
  • the heated water is drained directly via the drain plug and the pump is flushed with cold fresh water.
  • the internal circulation is preferably used, and with low speeds to increase the heat transfer from steel to water. This is called
  • the short-circuiting connection is preferably equipped with sensors such as temperature and flow meter.
  • sensors such as temperature and flow meter.
  • the detection of the fluid temperature is carried out by direct measurement via a sensor in the fluid, or indirect measurement via a sensor on the pump jacket or bleed screw or an observed quantity such as the power consumption and a fluid temperature calculation model.
  • an external heat source is arranged such.
  • Immersion heater which accelerates the heating process.
  • drainage nozzles are recommended on the beams or
  • Detection and drainage of the water are analogous to the single pump.
  • a targeted operation of the centrifugal pump (s) for adjusting the detected fluid temperature can be done by two-step control by switching on and off the centrifugal pump or by speed control of the centrifugal pump by a frequency converter.
  • a subsequent cooling of the reaction space is carried out by draining the heated fluid and subsequent flow of cooler fluid, eg. B. by completely opening the screw.
  • cooler fluid eg. B.
  • a subsequent cooling of the reaction space is carried out by draining the heated fluid and subsequent flow of cooler fluid, eg. B. by completely opening the screw.
  • cooler fluid eg. B.
  • a storage of the detected measured values is preferably provided for the detection of the performed thermal disinfection, z. B. as a protocol with a diagram of the temperature or as a sticker with the function to prove the thermal disinfection over discoloration with sufficiently long heating.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Physics & Mathematics (AREA)
  • Combustion & Propulsion (AREA)
  • Thermal Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Sustainable Development (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)

Abstract

L'invention concerne un procédé permettant une désinfection thermique dans une pompe centrifuge ou un système de pompage pourvu d'au moins une pompe centrifuge refoulant de l'eau potable, de l'eau non potable, des eaux usées ou d'autres milieux liquides. La pompe centrifuge ou le système de pompage comprennent un raccord d'aspiration débouchant en direction du côté d'aspiration de la pompe centrifuge ou du système de pompage et un raccord de pression débouchant en direction du côté de pression. La pompe centrifuge ou le système de pompage, lorsque le raccord d'aspiration est fermé et/ou que le raccord de pression est fermé, refoule le milieu dans le circuit par l'intermédiaire d'une liaison court-circuitant par intermittence et de manière hydraulique le côté de pression avec le côté d'aspiration et située à l'intérieur de la pompe centrifuge ou du système de pompage, de telle manière que le milieu, et donc les pièces de la pompe centrifuge ou du système de pompage en contact avec le milieu, sont réchauffés à une température désinfectante.
PCT/EP2014/002139 2013-08-13 2014-08-04 Désinfection dans une pompe centrifuge ou dans un système de pompage contenant au moins une pompe centrifuge WO2015022060A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14747841.6A EP3033575A1 (fr) 2013-08-13 2014-08-04 Désinfection dans une pompe centrifuge ou dans un système de pompage contenant au moins une pompe centrifuge

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013013543.5 2013-08-13
DE102013013543.5A DE102013013543B4 (de) 2013-08-13 2013-08-13 Desinfektion in einer Kreiselpumpe oder in einem mindestens eine Kreiselpumpe enthaltenen Pumpensystem

Publications (1)

Publication Number Publication Date
WO2015022060A1 true WO2015022060A1 (fr) 2015-02-19

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2014/002139 WO2015022060A1 (fr) 2013-08-13 2014-08-04 Désinfection dans une pompe centrifuge ou dans un système de pompage contenant au moins une pompe centrifuge

Country Status (3)

Country Link
EP (1) EP3033575A1 (fr)
DE (1) DE102013013543B4 (fr)
WO (1) WO2015022060A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110307635A (zh) * 2019-07-05 2019-10-08 华帝股份有限公司 可提高增压效果的燃气热水器

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3862570A1 (fr) * 2020-02-06 2021-08-11 Husqvarna Ab Pompe de jardin ayant un revêtement thermosensible
CN113428928A (zh) * 2021-06-28 2021-09-24 同济大学 一种活链续接型不间断高盐废水净化方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3701562A1 (de) * 1986-03-12 1987-09-17 Oplaender Wilo Werk Gmbh Spaltrohrkreiselpumpe
EP0347533A2 (fr) * 1988-06-22 1989-12-27 WILO-Werk GmbH & Co. Pumpen- und Apparatebau Pompe à gaine
DE4415157A1 (de) * 1994-05-02 1995-11-09 Klein Schanzlin & Becker Ag Selbstansaugende mehrstufige Kreiselpumpe
DE19932795A1 (de) * 1999-07-14 2001-01-18 Kemper Gebr Gmbh & Co Kg Verfahren zum Desinfizieren von Wasserbehandlungsanlagen und verfahrensgemäß betriebene Wasserbehandlungsanlage
DE20303047U1 (de) * 2002-09-05 2003-11-27 Engels, Karl Heinz Warmwasserboiler
EP1693344A1 (fr) * 2005-02-18 2006-08-23 Sirius 12 GmbH Dispositif pour la désinfection thermique des installations d'alimentation d'eau potable

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004035167A1 (de) * 2004-07-20 2006-02-16 Wilo Ag Verfahren im Warmwasserkreislauf
DE102008053522A1 (de) * 2008-10-28 2010-04-29 Oerlikon Leybold Vacuum Gmbh Verfahren zum Reinigen einer Vakuumpumpe
DE102011101471A1 (de) * 2011-05-13 2012-11-15 Airbus Operations Gmbh Dynamisches Desinfektionsverfahren für einen Fahrzeugtrinkwassertank

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3701562A1 (de) * 1986-03-12 1987-09-17 Oplaender Wilo Werk Gmbh Spaltrohrkreiselpumpe
EP0347533A2 (fr) * 1988-06-22 1989-12-27 WILO-Werk GmbH & Co. Pumpen- und Apparatebau Pompe à gaine
DE4415157A1 (de) * 1994-05-02 1995-11-09 Klein Schanzlin & Becker Ag Selbstansaugende mehrstufige Kreiselpumpe
DE19932795A1 (de) * 1999-07-14 2001-01-18 Kemper Gebr Gmbh & Co Kg Verfahren zum Desinfizieren von Wasserbehandlungsanlagen und verfahrensgemäß betriebene Wasserbehandlungsanlage
DE20303047U1 (de) * 2002-09-05 2003-11-27 Engels, Karl Heinz Warmwasserboiler
EP1693344A1 (fr) * 2005-02-18 2006-08-23 Sirius 12 GmbH Dispositif pour la désinfection thermique des installations d'alimentation d'eau potable

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110307635A (zh) * 2019-07-05 2019-10-08 华帝股份有限公司 可提高增压效果的燃气热水器

Also Published As

Publication number Publication date
EP3033575A1 (fr) 2016-06-22
DE102013013543A1 (de) 2015-02-19
DE102013013543B4 (de) 2023-11-02

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