WO2018224309A1 - Pompe centrifuge servant à refouler des milieux très chauds - Google Patents

Pompe centrifuge servant à refouler des milieux très chauds Download PDF

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Publication number
WO2018224309A1
WO2018224309A1 PCT/EP2018/063495 EP2018063495W WO2018224309A1 WO 2018224309 A1 WO2018224309 A1 WO 2018224309A1 EP 2018063495 W EP2018063495 W EP 2018063495W WO 2018224309 A1 WO2018224309 A1 WO 2018224309A1
Authority
WO
WIPO (PCT)
Prior art keywords
centrifugal pump
module
housing
bearing
shaft
Prior art date
Application number
PCT/EP2018/063495
Other languages
German (de)
English (en)
Inventor
Hermann Wiesner
Rudolf ENS
Original Assignee
KSB SE & Co. KGaA
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 KSB SE & Co. KGaA filed Critical KSB SE & Co. KGaA
Priority to CN201880037812.XA priority Critical patent/CN110709609B/zh
Priority to EP18726981.6A priority patent/EP3635259B1/fr
Publication of WO2018224309A1 publication Critical patent/WO2018224309A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/046—Bearings
    • F04D29/0462—Bearing cartridges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/10—Shaft sealings
    • F04D29/12—Shaft sealings using sealing-rings
    • F04D29/126—Shaft sealings using sealing-rings especially adapted for liquid 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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid 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
    • F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
    • F04D7/06—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metals

Definitions

  • the invention relates to a centrifugal pump for conveying hot media with at least one impeller, which is arranged in a pump housing and is connected via a shaft with a drive in connection, wherein the pump housing a housing arrangement for heat dissipation connects and the shaft with at least one mechanical seal and at least one storage is provided.
  • Such pumps are also referred to as hot water or heat transfer pumps. They are used, for example, for circulating hot water or heat carriers in a heating system. Since the temperature of a heat transfer oil can be up to 400 ° C, the temperature must be reduced by a special housing arrangement for heat dissipation, which is arranged between the pump housing and the shaft seal, so far that conveyed medium lubricated bearings or
  • centrifugal pumps Since the thermal and usually also chemical loads in the promotion of hot water and heat transfer are high, such centrifugal pumps have a special choice of materials already in the selection of materials for the media and components stressed on the pressure side, such as housing, impeller and split rings on these high loads are aligned. Of particular importance is the housing arrangement for heat dissipation, which serves as a distance distance for temperature reduction.
  • EP 0 327 549 B1 describes a centrifugal pump for conveying hot media.
  • the centrifugal pump has a pump housing, which consists of a spiral housing and a housing cover. In the pump housing, an impeller is arranged on a shaft. The exit of the shaft from the housing is sealed by a mechanical seal.
  • the shaft is mounted on the one hand in a roller bearing arranged outside of the pump housing and on the other hand, a sliding bearing arranged within the pump housing. Between these camps and one
  • Mechanical seal is formed as a distance distance, tubular part of the housing cover, which surrounds the pump shaft with a narrow gap.
  • the mechanical seal is located in a sealing space within a seal housing having a venting device.
  • the seal housing for mechanical seals, in particular of centrifugal pumps for conveying hot liquids.
  • the seal housing communicates with a higher pressure space containing the fluid through a gap surrounding a shaft.
  • Within a sealing chamber enclosed by the seal housing means for generating a liquid circulation are provided. There is a flushing of the sliding surface region of the mechanical seal.
  • a partition wall is arranged in the seal housing.
  • the partition wall forms an outer area and an inner area in the sealing space.
  • Within the inner area a mechanical seal is arranged.
  • the mechanical seal seals an area exposed to pressure and temperature from the atmosphere. Through a gap, which is arranged between the shaft and a thermal barrier, hot liquid enters the seal chamber.
  • EP 2 245 312 B1 describes a degassing device for a centrifugal pump.
  • the degassing device is arranged in a housing and has a space with a shaft arranged therein. On the shaft a mechanical seal is formed.
  • the shaft held in the bearings penetrates a pump cover and carries an impeller of the centrifugal pump. Fluid in the centrifugal pump flows along the shaft into the space of the degassing device.
  • Such centrifugal pumps for the conveyance of hot media - such as hot water - must be designed with a "thermal barrier.” In the shaft seal and axial duct area, this will result in a temperature reduction that is sufficient to ensure sufficient uptime without additional cooling equipment
  • the convection of ambient air to a housing arrangement for heat dissipation or the additional use of a fan dissipates heat from the shaft seal chamber and the bearing area.
  • the temperature-sensitive components such as the shaft seal and the rolling bearing are kept at a distance from the hot pump housing, which usually consists of a
  • the aim is to minimize the heat flow from the pump housing to the shaft seal space.
  • the shaft seal in such pumps often consists of a mechanical seal, which is usually a single-acting seal However, it is also conceivable to use a tandem mechanical seal.
  • the radial bearing of such pumps is usually in the range of the impeller and is designed by design as conveying medium lubricated sliding bearing.
  • a thrust bearing is usually a rolling bearing with a permanent grease lubrication used.
  • the mechanical seal and the thrust bearing are wear parts that must be replaced regularly.
  • the object of the invention is to provide a centrifugal pump in which the wear parts can be replaced as quickly as possible.
  • the pump should be as easy to service as possible.
  • the pump should be characterized by a reliable mode of operation, in particular a high tightness and the highest possible efficiency.
  • the pump should have the highest possible life and be relatively inexpensive to purchase. This object is achieved by a centrifugal pump with the features of claim 1. Preferred variants can be found in the subclaims, the description and the drawings.
  • the centrifugal pump has a compact module as an assembly unit, which comprises at least one mechanical seal with at least one bearing.
  • the module forms a "service unit" in which at least one mechanical seal and at least one bearing are combined, thus creating an assembly-friendly unit with which the most important wearing parts such as the mechanical seal and bearing can be exchanged quickly and in a service-friendly way.
  • the module is arranged on a coupling side for the drive.
  • the assembly or disassembly of the module can be made from the cold pump side.
  • the invention makes it possible to install and remove the module without having to disassemble the bearing carrier itself from the pump housing. Due to the construction according to the invention, the insulation does not have to be removed during disassembly and can thus be replaced on site. stay.
  • the time required for the cooling of the heated components in such pumps can be significantly reduced because the bearing carrier on the coupling side is significantly less hot than the pump cover.
  • the assembly or disassembly is carried out from the cold side, the coupling side of the pump, in order to minimize the time required for the necessary cooling.
  • the pump cover can remain in the pump housing.
  • the housing assembly which serves to dissipate heat, has an insertion opening in which the module is placed.
  • the compact service module is pushed onto the coupling on the shaft and inserted into the insertion opening.
  • the module can be connected to the housing assembly.
  • the housing assembly is designed for heat dissipation as a distance distance and serves a temperature reduction.
  • the module comprises a sleeve which is pushed onto the shaft.
  • the sleeve serves to form a unit of mechanical seal and storage of the module.
  • the sleeve has a radial projection, which preferably serves as a stop for a further component of the module.
  • the module has a socket to form a unit.
  • the mechanical seal and the bearing are preferably arranged around the sleeve and are held together by the sleeve in one unit. It proves to be advantageous if the storage between the socket and the sleeve is placed.
  • the bushing preferably has, on the motor side, a first cylindrical area with an outer diameter that is larger than the outer diameter of a second pump-side area.
  • the bushing has at least one bore through which a leakage flow can flow.
  • the module may have a bearing cap. After insertion of the module in the insertion opening of the housing assembly, the module is fixed by means of fastening elements, such as screws, on the housing assembly.
  • the housing arrangement for heat dissipation has a space, the space may be a sealing space, which is provided with a vent.
  • the bearing fixed in the module is preferably a thrust bearing, which is preferably designed as a roller bearing.
  • a roller bearing with a grease lubrication is a particularly advantageous variant of the invention.
  • FIG. 1 shows a perspective view of the centrifugal pump for conveying hot media
  • FIG. 2 shows a sectional view through the centrifugal pump shown in FIG. 1,
  • FIG. 1 shows a centrifugal pump for conveying hot media with a pump housing 1.
  • the pump housing 1 comprises a spiral housing 2 and a housing cover 3.
  • the housing 1 is adjoined to the pump housing 1 for heat release.
  • the housing assembly 4 is equipped with cooling fins 5.
  • the housing arrangement 4 forms a distance distance, which serves as a thermal barrier for lowering the temperature of the hot pump housing 1 to the shaft outlet 6.
  • the shaft 7 is provided with a coupling end 8 for the drive.
  • FIG. 2 shows a sectional view through the centrifugal pump shown in FIG. The cut passes through the cooling ribs 5 shown in FIG.
  • an impeller 9 is arranged, which is rotatably mounted on the shaft 7.
  • the housing assembly 4 connects.
  • a bearing 10 is arranged between the shaft 7 and the housing arrangement 4.
  • the bearing 10 is designed as a radial bearing.
  • the radial bearing in the exemplary embodiment is a sliding bearing.
  • a throttle gap 11 is formed, flows through the hot fluid from the interior 12 of the pump housing to a chamber 13 as a leakage current when the pump is filled and a vent 14 is open.
  • the formed in the housing assembly 4 chamber 13 is formed as a sealing space for collecting cooled conveying liquid and has the vent 14 on.
  • the chamber 13 is preferably formed as a closed space for supplying the Gleitring- sealing arrangement 26 and can be vented.
  • the housing arrangement 4 On the coupling side, the housing arrangement 4 has an insertion opening into which a module 15, which forms an assembly unit, is pushed onto the shaft 7.
  • the module 15 is shown in perspective in FIG.
  • the module 15 comprises a bushing 16, which has a flange 17 for connection to a bearing cap 18.
  • the bushing 16 has on the motor side a first cylindrical region 19 with a large outer surface. During mismesser and pump side, a second region 20 with a smaller outer diameter. In the area 20 holes 21 are arranged. These are leakage bores.
  • FIG. 3 shows that the module 15 is a compact unit that can be completely assembled and disassembled.
  • the module 15 has for this purpose a central opening 22 in order to push it onto the shaft 7 in the insertion opening of the housing assembly 4.
  • FIG. 4 shows a sectional view through the module 15 shown in FIG. 3.
  • the module 15 comprises a sleeve 23, which sits on the shaft 7.
  • the sleeve 23 has a hollow-cylindrical shape and has a radial projection 24.
  • the radial projection 24 has an L-shaped profile in the sectional view and serves as a stop for an inner wall of the bushing 16.
  • the bushing 16 comprises a bearing 25.
  • the bearing 25 is formed in the embodiment as an axial roller bearing, which preferably operates in a permanent grease lubrication ,
  • the module 15 additionally comprises a mechanical seal assembly 26.
  • the Gleitringdichtungsanord- tion 26 and the bearing 25 is connected in one unit.
  • the module 15 is fixed to the shaft 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

L'invention concerne une pompe centrifuge servant à refouler des milieux très chauds. La pompe centrifuge comprend au moins une roue mobile (9) qui est disposée dans un carter (1) de pompe. La roue mobile (9) est amenée en rotation par un entraînement par l'intermédiaire d'un arbre (7). Un ensemble (4) de carter servant à la dissipation de chaleur est raccordé au carter (1) de pompe. L'arbre (7) est pourvu d'un ensemble d'étanchéité à bagues de glissement (16). Par ailleurs, l'arbre (7) est soutenu avec au moins un palier de support (10, 25). Selon l'invention, la pompe centrifuge comprend un module (15) compact, qui est réalisé sous la forme d'une unité de montage. Le module (15) comprend au moins un ensemble d'étanchéité à bagues de glissement (26) et au moins un palier de support (25).
PCT/EP2018/063495 2017-06-09 2018-05-23 Pompe centrifuge servant à refouler des milieux très chauds WO2018224309A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201880037812.XA CN110709609B (zh) 2017-06-09 2018-05-23 用于输送热介质的离心泵
EP18726981.6A EP3635259B1 (fr) 2017-06-09 2018-05-23 Pompe centrifuge servant à refouler des milieux très chauds

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017209803.1 2017-06-09
DE102017209803.1A DE102017209803A1 (de) 2017-06-09 2017-06-09 Kreiselpumpe zur Förderung heißer Medien

Publications (1)

Publication Number Publication Date
WO2018224309A1 true WO2018224309A1 (fr) 2018-12-13

Family

ID=62244489

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2018/063495 WO2018224309A1 (fr) 2017-06-09 2018-05-23 Pompe centrifuge servant à refouler des milieux très chauds

Country Status (4)

Country Link
EP (1) EP3635259B1 (fr)
CN (1) CN110709609B (fr)
DE (1) DE102017209803A1 (fr)
WO (1) WO2018224309A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020133832A1 (de) 2020-12-16 2022-06-23 KSB SE & Co. KGaA Laterne mit Elementen zur Wärmeableitung
DE102021129695A1 (de) 2021-11-15 2023-05-17 KSB SE & Co. KGaA Kreiselpumpe mit Kühleinsatz
DE102022001479A1 (de) 2022-04-27 2023-11-02 KSB SE & Co. KGaA Kreiselpumpenanordnung

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1057454B (de) * 1956-10-22 1959-05-14 Sulzer Ag Zentrifugalpumpe
FR2525699A1 (fr) * 1982-04-26 1983-10-28 Largeaud Paul Machine rotative - telle une pompe centrifuge - avec organe d'etancheite facilement demontable
EP0327549B1 (fr) 1986-10-17 1990-08-08 SIHI GmbH & Co KG Pompe centrifuge pour milieux chauds
US5409350A (en) * 1993-10-29 1995-04-25 Caterpillar Inc. Water pump bearing and seal cartridge
DE10013154A1 (de) 2000-03-17 2001-09-20 Ksb Ag Wellenabdichtung
WO2003091572A1 (fr) * 2002-04-26 2003-11-06 Allweiler Ag Pompe centrifuge, en particulier a boitier en spirale, pour un milieu caloporteur
EP2245312B1 (fr) 2008-11-12 2011-11-30 KSB Aktiengesellschaft Dispositif de dégazage pour espaces remplis de liquide avec des composants rotatifs

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102606534A (zh) * 2012-03-27 2012-07-25 上海阿波罗机械股份有限公司 一种核电站用余热排出泵
JP2017078460A (ja) * 2015-10-20 2017-04-27 イーグルブルグマンジャパン株式会社 メカニカルシール

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1057454B (de) * 1956-10-22 1959-05-14 Sulzer Ag Zentrifugalpumpe
FR2525699A1 (fr) * 1982-04-26 1983-10-28 Largeaud Paul Machine rotative - telle une pompe centrifuge - avec organe d'etancheite facilement demontable
EP0327549B1 (fr) 1986-10-17 1990-08-08 SIHI GmbH & Co KG Pompe centrifuge pour milieux chauds
US5409350A (en) * 1993-10-29 1995-04-25 Caterpillar Inc. Water pump bearing and seal cartridge
DE10013154A1 (de) 2000-03-17 2001-09-20 Ksb Ag Wellenabdichtung
WO2003091572A1 (fr) * 2002-04-26 2003-11-06 Allweiler Ag Pompe centrifuge, en particulier a boitier en spirale, pour un milieu caloporteur
EP2245312B1 (fr) 2008-11-12 2011-11-30 KSB Aktiengesellschaft Dispositif de dégazage pour espaces remplis de liquide avec des composants rotatifs

Also Published As

Publication number Publication date
EP3635259C0 (fr) 2023-07-26
DE102017209803A1 (de) 2018-12-13
CN110709609B (zh) 2021-03-09
EP3635259A1 (fr) 2020-04-15
CN110709609A (zh) 2020-01-17
EP3635259B1 (fr) 2023-07-26

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