EP0018687A1 - Dredge pump set - Google Patents
Dredge pump set Download PDFInfo
- Publication number
- EP0018687A1 EP0018687A1 EP80200375A EP80200375A EP0018687A1 EP 0018687 A1 EP0018687 A1 EP 0018687A1 EP 80200375 A EP80200375 A EP 80200375A EP 80200375 A EP80200375 A EP 80200375A EP 0018687 A1 EP0018687 A1 EP 0018687A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump
- tubular carrier
- shaft
- fastened
- dredge
- 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
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
- E02F3/90—Component parts, e.g. arrangement or adaptation of 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
Definitions
- the invention relates to a dredge pump set for a dredge craft, comprising a tubular carrier for the pump set and the drive set that is connected to the pump shaft, in which the shaft side of the pump body is fastened to the one end of the tubular carrier in which the pump shaft and the drive set are housed, whereas the other end of the tubular carrier can be fastened to a support structure, which tubular carrier has been provided with at least one support element, that extends from the inner wall of the tubular carrier in an inward direction and has a bearing for the pump shaft and the drive set.
- Dredge pump sets of this type are described in "PORTS AND DREDGING", No. 86, 1975, "centrifugal dredge pumps", No. 7, pages 8, 9; fig. 13. There are used mainly in a submerged condition as a part of a suction trailing or towing tube.
- the pump shaft and the motor shaft are unitary whereas the electric motor is mounted on the inside of the tubular carrier, said single shaft being supported in bearings at both ends of the electric motor.
- This structure has the objection, that bending forces on the trailing or towing tube have their effect on the unitary pump-motor shaft, so that the bearings become quickly worn out whereas the removal and replacement of these bearings require considerable labour and result in a certain amount of down time for the dredge pump set and thus the craft that has been equipped therewith.
- the object of the invention is providing an improved dredge pump set of the type described in the preamble, said set having on the one hand such a shaft and bearing construction, that the shaft and bearings are substantially uninfluenced by bending forces on the connected suction tube, and are on the other hand easy replacable so that the labour and the down time for replacement are substantially reduced.
- the drive set comprises two or more bearings for the pump shaft, that are housed in a tubular bearing body of which the ends are sealed, whereas at least two support elements are fastened to the outside of the tubular bearing body, said pump shaft being independent from the motor shaft and said shafts being connected by a coupling.
- the pump shaft and the motor shaft need not be exactly aligned,whereas the bending loads on the suction end of the pump body and other bending forces due to hoi.sting and lowering the suction pipe and to the streaming of the water are not transmitted to the bearings of the pump shaft and the motor shaft, so that the life of these components is substantially enlarged. Furthermore this structure allows an easy and fast replacement of the worn out components.
- the dredge pump set comprises a dredge pump, which is generally indicated with 1, and a tubular carrier, which is generally indicated with 2.
- the dredge pump 1 has been provided with a volute body 3, in which a suitable, rotating impeller 12 is arranged.
- a closing lid 4 is present, with a fastening flange 5, which can be fastened together with the end flange 37 of the tube 38 by means of (non shown) bolts to the edge flange 6 of the volute body 3.
- the closing lid 4 has also been provided with a tube end 7 having a fastening flange 8 for fastening the suction tube 9 of which only the end is shown.
- volute body 3 has also been provided with a fastening flange 10, for the edge flange 11 of the pump lid 13 and the end flange 14 of the tubular carrier 2.
- This tubular carrier consists of the bearing part 15, that is shown at the left side of the drawing and has a continuous,round diameter, and the motor part 16 that is shown at the right side of the drawing, that has at its end being connected to the bearing part,15 a round diameter and at its right outer end an oblong rounded form.
- the impeller 12 the pump shaft 17 is fastened, said shaft extending through the pump lid 13 there having a shaft sealing 18, after which the pump shaft extends through the next shaft sealing 19 through a bearing body 20.
- this bearing body 20 a number of bearings have been fastened, such as the cask bearings 21 and 22, at both sides of the bearing body 20, and the axial thrust bearing 23.
- the bearing body 20 has been fastened by means of the diametral supports 24 and 25 centrally inside the bearing part 15 of the tubular carrier 2.
- the shaft 26 is fastened of the rotating hydraulic motor 27.
- This motor 27 is at its end turned away from the shaft side fastened to a motor support 28, which extends from the right, oblong rounded end flange 29 of the motor part 16 of the tubular carrier to the left side and is reinforced by means of the reinforcement plates 30.
- the pressure outlet tube end 31 of the volute body 3 carries a fastening flange 32, on which the pertaining flange 33 is fastened of a bend piece 34 that is bent in two dimensions, whereas the other end flange 35 of this bend piece 34 lies in the same place as, but at the upper side of the end flange 29 of the motor part 16 of the tubular carrier 2.
- the end flange 29 can be fastened to a carrying piece that is mounted as an extension of a (non shown) pressure tube line, whereas the end flange 35 can be fastened to a (non shown) reducer of this pressure line, of which the axis coincides with that of the motor 27, pump shaft 17 and impeller 12.
- Oblong rounded means two parallel sides with half circles at the end.
- a hydraulic motor instead of a hydraulic motor also an electric or an air motor can be used or another prime mover.
- the dredge set according to the invention is in the first place intended for use in the towing or trailing suction tube of a dredge craft, it can also be applied in the submerged water suction line of a cutter head-suction dredge craft or on board of other dredge crafts.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
- The invention relates to a dredge pump set for a dredge craft, comprising a tubular carrier for the pump set and the drive set that is connected to the pump shaft, in which the shaft side of the pump body is fastened to the one end of the tubular carrier in which the pump shaft and the drive set are housed, whereas the other end of the tubular carrier can be fastened to a support structure, which tubular carrier has been provided with at least one support element, that extends from the inner wall of the tubular carrier in an inward direction and has a bearing for the pump shaft and the drive set.
- Dredge pump sets of this type are described in "PORTS AND DREDGING", No. 86, 1975, "centrifugal dredge pumps", No. 7,
pages 8, 9; fig. 13. There are used mainly in a submerged condition as a part of a suction trailing or towing tube. The pump shaft and the motor shaft are unitary whereas the electric motor is mounted on the inside of the tubular carrier, said single shaft being supported in bearings at both ends of the electric motor. This structure has the objection, that bending forces on the trailing or towing tube have their effect on the unitary pump-motor shaft, so that the bearings become quickly worn out whereas the removal and replacement of these bearings require considerable labour and result in a certain amount of down time for the dredge pump set and thus the craft that has been equipped therewith. - The object of the invention is providing an improved dredge pump set of the type described in the preamble, said set having on the one hand such a shaft and bearing construction, that the shaft and bearings are substantially uninfluenced by bending forces on the connected suction tube, and are on the other hand easy replacable so that the labour and the down time for replacement are substantially reduced.
- This object is reached according to the invention, in that the drive set comprises two or more bearings for the pump shaft, that are housed in a tubular bearing body of which the ends are sealed, whereas at least two support elements are fastened to the outside of the tubular bearing body, said pump shaft being independent from the motor shaft and said shafts being connected by a coupling.
- By application of the invention there is reached, that the pump shaft and the motor shaft need not be exactly aligned,whereas the bending loads on the suction end of the pump body and other bending forces due to hoi.sting and lowering the suction pipe and to the streaming of the water are not transmitted to the bearings of the pump shaft and the motor shaft, so that the life of these components is substantially enlarged. Furthermore this structure allows an easy and fast replacement of the worn out components.
- The invention will now be further elucidated referring to the accompanying drawing of an embodiment.
-
- Fig. 1 shows a longitudinal cross section of the dredge pump set according to the invention.
- Fig. 2 shows a plane view of the dredge pump set according to fig. 1.
- According to the drawing the dredge pump set comprises a dredge pump, which is generally indicated with 1, and a tubular carrier, which is generally indicated with 2. The dredge pump 1 has been provided with a
volute body 3, in which a suitable, rotatingimpeller 12 is arranged. At the inlet side a closing lid 4 is present, with a fastening flange 5, which can be fastened together with the end flange 37 of thetube 38 by means of (non shown) bolts to the edge flange 6 of thevolute body 3. The closing lid 4 has also been provided with a tube end 7 having a fastening flange 8 for fastening thesuction tube 9 of which only the end is shown. At the shaft side thevolute body 3 has also been provided with a fastening flange 10, for the edge flange 11 of thepump lid 13 and the end flange 14 of thetubular carrier 2. This tubular carrier consists of thebearing part 15, that is shown at the left side of the drawing and has a continuous,round diameter, and themotor part 16 that is shown at the right side of the drawing, that has at its end being connected to the bearing part,15 a round diameter and at its right outer end an oblong rounded form. On theimpeller 12 thepump shaft 17 is fastened, said shaft extending through thepump lid 13 there having a shaft sealing 18, after which the pump shaft extends through the next shaft sealing 19 through a bearingbody 20. In this bearing body 20 a number of bearings have been fastened, such as thecask bearings body 20, and the axial thrust bearing 23. The bearingbody 20 has been fastened by means of the diametral supports 24 and 25 centrally inside the bearingpart 15 of thetubular carrier 2. - At the other end of the
pump shaft 17 via theelastic coupling 16 theshaft 26 is fastened of the rotatinghydraulic motor 27. Thismotor 27 is at its end turned away from the shaft side fastened to a motor support 28, which extends from the right, oblongrounded end flange 29 of themotor part 16 of the tubular carrier to the left side and is reinforced by means of thereinforcement plates 30. - The pressure
outlet tube end 31 of thevolute body 3 carries afastening flange 32, on which thepertaining flange 33 is fastened of abend piece 34 that is bent in two dimensions, whereas theother end flange 35 of thisbend piece 34 lies in the same place as, but at the upper side of theend flange 29 of themotor part 16 of thetubular carrier 2. Theend flange 29 can be fastened to a carrying piece that is mounted as an extension of a (non shown) pressure tube line, whereas theend flange 35 can be fastened to a (non shown) reducer of this pressure line, of which the axis coincides with that of themotor 27,pump shaft 17 andimpeller 12. Oblong rounded means two parallel sides with half circles at the end. - The invention is not limited to the shown and described embodiment but covers all variations thereof.
- Instead of a hydraulic motor also an electric or an air motor can be used or another prime mover. Although the dredge set according to the invention is in the first place intended for use in the towing or trailing suction tube of a dredge craft, it can also be applied in the submerged water suction line of a cutter head-suction dredge craft or on board of other dredge crafts.
Claims (9)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL7903272A NL7903272A (en) | 1979-04-25 | 1979-04-25 | DREDGE PUMP AGGREGATE. |
NL7903272 | 1979-04-25 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0018687A1 true EP0018687A1 (en) | 1980-11-12 |
EP0018687B1 EP0018687B1 (en) | 1984-01-18 |
Family
ID=19833053
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP80200375A Expired EP0018687B1 (en) | 1979-04-25 | 1980-04-24 | Dredge pump set |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0018687B1 (en) |
DE (1) | DE3066132D1 (en) |
NL (1) | NL7903272A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106120923B (en) * | 2016-08-24 | 2018-07-20 | 浙江义海航道工程有限公司 | It is a kind of large-scale from boat hydraulic suction dredge |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1638387A (en) * | 1921-01-07 | 1927-08-09 | Baldwin James Edward | Submersible pump |
GB556853A (en) * | 1942-11-11 | 1943-10-25 | William Ernest Wyatt Millingto | Improvements in and relating to centrifugal pumps |
NL6813407A (en) * | 1968-09-19 | 1970-03-23 | ||
FR2056413A5 (en) * | 1969-07-01 | 1971-05-14 | Schaeffler Ohg Industriewerk | |
FR2062226A5 (en) * | 1969-09-16 | 1971-06-25 | Wernert Et Co Kg | |
FR2149867A5 (en) * | 1971-08-05 | 1973-03-30 | Ransome Hoffmann Pollard |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7900925A (en) * | 1979-02-06 | 1980-08-08 | Breejen Beheer | VACUUM DREDGING VESSEL. |
-
1979
- 1979-04-25 NL NL7903272A patent/NL7903272A/en not_active Application Discontinuation
-
1980
- 1980-04-24 DE DE8080200375T patent/DE3066132D1/en not_active Expired
- 1980-04-24 EP EP80200375A patent/EP0018687B1/en not_active Expired
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1638387A (en) * | 1921-01-07 | 1927-08-09 | Baldwin James Edward | Submersible pump |
GB556853A (en) * | 1942-11-11 | 1943-10-25 | William Ernest Wyatt Millingto | Improvements in and relating to centrifugal pumps |
NL6813407A (en) * | 1968-09-19 | 1970-03-23 | ||
FR2056413A5 (en) * | 1969-07-01 | 1971-05-14 | Schaeffler Ohg Industriewerk | |
FR2062226A5 (en) * | 1969-09-16 | 1971-06-25 | Wernert Et Co Kg | |
FR2149867A5 (en) * | 1971-08-05 | 1973-03-30 | Ransome Hoffmann Pollard |
Non-Patent Citations (1)
Title |
---|
PORTS AND DREDGING, No. 86, 1975, No. 7, publ. by. I.H.C. Holland, S. DEBREE: "Centrifugal dredge pumps", pages 4-9. * Pages 8, 9, figuur 13 * * |
Also Published As
Publication number | Publication date |
---|---|
DE3066132D1 (en) | 1984-02-23 |
EP0018687B1 (en) | 1984-01-18 |
NL7903272A (en) | 1980-10-28 |
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