GB2242932A - Centrifugal pump unit with support cage - Google Patents
Centrifugal pump unit with support cage Download PDFInfo
- Publication number
- GB2242932A GB2242932A GB9107288A GB9107288A GB2242932A GB 2242932 A GB2242932 A GB 2242932A GB 9107288 A GB9107288 A GB 9107288A GB 9107288 A GB9107288 A GB 9107288A GB 2242932 A GB2242932 A GB 2242932A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cage
- centrifugal pump
- motor
- pump unit
- parting line
- 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
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
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/021—Units comprising pumps and their driving means containing a coupling
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Saccharide Compounds (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Medicinal Preparation (AREA)
Abstract
In a centrifugal pump unit of vertical construction, in which a cage (3) provides a connection between a motor casing (7) and the pump casing (1), a horizontal parting line (6) is provided between two parts of the cage or between the cage and a flange (8) of the motor casing, the parting line (6) being between the input and output shaft ends, which ends are connected by a removable shaft coupling. This construction enables the motor to be separated from the pump, in restricted space conditions, by removing the shaft coupling separating the two parts of the structure along said parting line (6) and displacing one of said two parts relative to the other, parallel with said parting line. <IMAGE>
Description
DESCRIPTION OF INVENTION
Title: UCentrifugal Pump Unit with Support Cage" THIS INVENTION relates to a centrifugal pump unit of vertical construction, in which a one-part or multi-part support cage is disposed between the motor and the centrifugal pump, access apertures to a shaft coupling being provided in the cage.
Units of this kind may be equipped with various types of support cages. For example DE-OS 2301961 shows an embodiment in which a bearing casing provided with an intermediate shaft is disposed inside a two-part support cage. The ends of the intermediate shaft are connected to the pump input shaft end by a f ixed coupling and to the motor output shaft end by a flexible coupling. After the fixed coupling has been dismantled, the intermediate shaft can be moved vertically upwards inside the bearing casing. In this way a free space is created inside the support cage to enable the pump shaft seal to be rapidly and easily changed. An alternative solution to this is shown in DE-PS 2261643 in which, instead of moving the shaft, the entire bearing casing with the intermediate shaft is moved. In both solutions work on the pump shaft bearing requires the motor to be lifted and the motor shaft end to be lifted out of the cage.
DE-AS 2262017 shows a one-part support cage on which the motor directly rests and projects into the cage by the end of its output shaft. In this a coupling provides a connection to the input shaft end. The pumps shown in the technical dictionary Europump, 1st Edition, Chapter 2.1, Figures 19 to 22, also have support cages in 2 which, f or access to the bearings disposed inside the cage, the motor together with its output shaft end has to be lifted to a very considerable extent to allow free access to the input shaft end. This already causes considerable difficulties in cases in which the space conditions are inadequate for removal of the motor. This applies particularly to ships and offshore oil rig platforms, in which space conditions are very restricted owing to the deck heights. The pump unit dimensions then make it impossible in some cases for the units to be erected vertically to save space, since space conditions prevent this.
An object of the invention, therefore, is to develop, for vertically disposed pump units, the possibility of an assembly which allows removal of the motor from a cage under restricted space conditions.
According to one aspect of the invention, there is provided a centrifugal ump unit of vertical construction, in which a one-part or multi-part support cage is disposed between the motor and the centrifugal pump, access apertures to a shaft coupling being provided in the cage, in which a horizontal parting line between the motor and the cage is provided between the input shaft end and the output shaft end.
Where a one-part support cage is used, the provision of the horizontal parting line between the input and output shaft ends allows very easy dismantling of the motor. In this way, the motor connection flange is moved into or beneath its output shaft end. After the two shaft ends have been disconnected, e.g. by releasing a shaft coupling through the access apertures in the cage and releasing the connection between the motor and the cage, i 4 1 3 the motor can be removed with minimal lifting. All that is required, therefore, is, as it were, to lift the motor from its support surface and then move it aside.
According to another aspect of the invention, there is provided a centrifugal pump unit in which, in a multipart cage, a horizontal parting line between the cage parts is provided between the input shaft end and the output shaft end.
This solution is advantageous where a conventional motor is used. In one embodiment of the invention in its last-noted aspect, the motor output shaft end projects beyond the motor flange. In this case, for example, if the support cage is split, the projecting motor shaft end can be bridged by a part of the cage. Assembly and dismantling may then be carried out similarly to the case, noted above, in which a one-part support cage is used. After release of a coupling connecting the shaft ends, and release of the connection between the cage parts along the parting line between the input and output shaft ends the motor can be swung aside after it has been slightly lifted. In that case the individual cage parts remain connected to the motor and pump.
Preferably, the horizontal parting line is disposed in the plane of the input shaft end of the pump. This feature offers the advantage that assembly time is reduced for any dismantling of the pump. For example, to reduce the time required for removing a pump from a pot casing, the connection between the support cage and the pump is advantageously left. Bearings or seals accommodated in the cage can thus remain in the assembled state and their settings unchanged. It has been found advantageous for the horizontal parting line to be moved into the area of the 4 pump shaft end. As a result, despite the cage part mounted on the pump, the length of the unit requiring to be moved is not increased as compared with the pump on its own.
Exemplified embodiments of the invention are described in detail below with reference to the drawings wherein:
FIGURE 1 shows a pump unit connected to a motor with the interposition of a two-part cage; FIGURE 2 shows a pump unit with a one-part cage and FIGURE 3 shows a dismantling operation.
Figure 1 shows a pump 1 vertically disposed on a floor 2. A two-part cage 3 connects the pump to a motor 4 flanged on the cage 3. The end 5 of the output shaft of the motor 4 projects conventionally into the cage 3. The provision of a horizontal parting line 6 in the cage 3 enables the motor to be swung away to the side after a short lifting movement, as shown in Figure 3, after a shaft coupling (not shown) has been released or removed and after the connection of the two parts of the cage has been broken along the parting line 6.
Figure 2 shows an embodiment in which a motor 7 is provided with a fixing flange 8 which projects beyond the end 9 of the pump motor output shaft. The input shaft end 10 of the pump 1 - which is in this case situated beneath the horizontal parting line 6 - does not obstruct a movement for swinging the motor aside.
Referring to Figure 3. after the connections, (between the two parts of the two-part cage or between the t Z fixing flange 8 and the cooperating flange of the one-part cage). have been released, all that is required is a short lifting movement of the motor in order to swing it aside. A hoist 11 is used for the lifting movement. - f e, 6
Claims (6)
1. A centrifugal pump unit of vertical construction in which a one-part or multi-part support cage is disposed between the motor and the centrifugal pump, access apertures to a shaft coupling being provided in the cage, in which a horizontal parting line (6) between the motor (4, 7) and the cage (3) is provided between the input shaft end (10) and the output shaft end (5, g).
2. A centrifugal pump unit according to the preamble to claim 1, in which, in a multi-part cage (3), a horizontal parting line (6) between the cage parts is provided between the input shaft end (10) and the outut shaft end (5, 9).
3. A centrifugal pump unit according to claim 1 or 2, in which the horizontal parting line (6) is disposed in the plane of the input shaft end (10) of the pump (1).
4. A centrifugal pump unit substantially as hereinbefore described with reference to and as shown in Figure 1 of the accompanying drawings.
5. A centrifugal pump unit substantially as hereinbefore described with reference to and as shown in Figure 2 of the accompanying drawings.
6. Any novel feature or combination of features described herein.
Published 1991 at The Patent Office. Concept House. Cardiff Road. Newport. Gwent NP9 I RH. Further copies may be obtained from Sales Branch. Unit 6. Nine Mile Point. CAmfelinfach. Cross Keys. Newport. NP1 7HZ. Printed ky Multiplex techniques ltd. St Mary Cray. Kent.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4011477A DE4011477C2 (en) | 1990-04-09 | 1990-04-09 | Lantern |
Publications (3)
Publication Number | Publication Date |
---|---|
GB9107288D0 GB9107288D0 (en) | 1991-05-22 |
GB2242932A true GB2242932A (en) | 1991-10-16 |
GB2242932B GB2242932B (en) | 1994-05-11 |
Family
ID=6404080
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9107288A Expired - Fee Related GB2242932B (en) | 1990-04-09 | 1991-04-08 | Centrifugal pump unit with support cage |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE4011477C2 (en) |
GB (1) | GB2242932B (en) |
NO (1) | NO173406C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5332373A (en) * | 1993-07-30 | 1994-07-26 | Baker Hughes Incorporated | Vertical pump and method for accessing same |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4211033C2 (en) * | 1992-04-02 | 2000-08-03 | Ksb Ag | Centrifugal pump unit |
AT412664B (en) * | 1998-04-27 | 2005-05-25 | Andritz Ag Maschf | STORAGE FOR A PUMP, ESPECIALLY MAIN COOLANT PUMP |
US11428270B2 (en) * | 2018-08-17 | 2022-08-30 | Itt Manufacturing Enterprises Llc | Rotating equipment having static torque coupling between driver and driven |
DE102021121654B3 (en) | 2021-08-20 | 2023-01-19 | Herborner Pumpentechnik Gmbh & Co Kg | Pump device, method for carrying out a service on a pump device |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB911769A (en) * | 1960-02-08 | 1962-11-28 | Jonkopings Mek Werkstads Aktiebolag | Improvements in centrifugal liquid or gas pump units |
DE2262017A1 (en) * | 1972-12-19 | 1974-06-20 | Wernert & Co Kg H | VERTICAL HANGING CENTRIFUGAL PUMP |
DE2261643A1 (en) * | 1972-12-16 | 1974-06-27 | Klein Schanzlin & Becker Ag | VERTICAL CENTRIFUGAL PUMP |
GB2010965A (en) * | 1977-12-22 | 1979-07-04 | Westinghouse Electric Corp | Nuclear reactor coolant pump having a tooling boom |
EP0042797A1 (en) * | 1980-06-20 | 1981-12-30 | Framatome | Centrifugal pump with dismountable diffusor |
US4669956A (en) * | 1984-08-03 | 1987-06-02 | Pompes Salmson | Multicellular pump with removable cartridge |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE636539C (en) * | 1934-12-23 | 1936-10-12 | Siemens Schuckertwerke Akt Ges | Electrically driven submersible pump set with stuffing boxes intended for use in salt water or other alkalis |
US2947260A (en) * | 1958-11-17 | 1960-08-02 | Ingersoll Rand Co | Centrifugal pumps |
DE2301961A1 (en) * | 1973-01-16 | 1974-07-18 | Klein Schanzlin & Becker Ag | VERTICAL CENTRIFUGAL PUMP WITH SEPARABLE SHAFT |
DD241286A1 (en) * | 1985-09-25 | 1986-12-03 | Pumpen & Verdichter Veb K | VERTICAL CIRCULAR PUMP WITH SEPARATE WAVE |
-
1990
- 1990-04-09 DE DE4011477A patent/DE4011477C2/en not_active Expired - Fee Related
-
1991
- 1991-03-14 NO NO911007A patent/NO173406C/en unknown
- 1991-04-08 GB GB9107288A patent/GB2242932B/en not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB911769A (en) * | 1960-02-08 | 1962-11-28 | Jonkopings Mek Werkstads Aktiebolag | Improvements in centrifugal liquid or gas pump units |
DE2261643A1 (en) * | 1972-12-16 | 1974-06-27 | Klein Schanzlin & Becker Ag | VERTICAL CENTRIFUGAL PUMP |
DE2262017A1 (en) * | 1972-12-19 | 1974-06-20 | Wernert & Co Kg H | VERTICAL HANGING CENTRIFUGAL PUMP |
GB2010965A (en) * | 1977-12-22 | 1979-07-04 | Westinghouse Electric Corp | Nuclear reactor coolant pump having a tooling boom |
US4181471A (en) * | 1977-12-22 | 1980-01-01 | Westinghouse Electric Corp. | Nuclear reactor coolant pump having a tooling boom |
EP0042797A1 (en) * | 1980-06-20 | 1981-12-30 | Framatome | Centrifugal pump with dismountable diffusor |
US4669956A (en) * | 1984-08-03 | 1987-06-02 | Pompes Salmson | Multicellular pump with removable cartridge |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5332373A (en) * | 1993-07-30 | 1994-07-26 | Baker Hughes Incorporated | Vertical pump and method for accessing same |
Also Published As
Publication number | Publication date |
---|---|
NO173406C (en) | 1993-12-08 |
GB2242932B (en) | 1994-05-11 |
DE4011477A1 (en) | 1991-10-10 |
NO173406B (en) | 1993-08-30 |
NO911007D0 (en) | 1991-03-14 |
NO911007L (en) | 1991-10-10 |
GB9107288D0 (en) | 1991-05-22 |
DE4011477C2 (en) | 1997-04-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20000408 |