US3873052A - Supporting structure for motors of vertical centrifugal pumps - Google Patents

Supporting structure for motors of vertical centrifugal pumps Download PDF

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Publication number
US3873052A
US3873052A US343757A US34375773A US3873052A US 3873052 A US3873052 A US 3873052A US 343757 A US343757 A US 343757A US 34375773 A US34375773 A US 34375773A US 3873052 A US3873052 A US 3873052A
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US
United States
Prior art keywords
frame
supporting structure
foundation
opening
frame members
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.)
Expired - Lifetime
Application number
US343757A
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English (en)
Inventor
Guenter Bockau
Horst Schaefer
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.)
Klein Schanzlin and Becker AG
Original Assignee
Klein Schanzlin and Becker AG
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 Klein Schanzlin and Becker AG filed Critical Klein Schanzlin and Becker AG
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Publication of US3873052A publication Critical patent/US3873052A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/605—Mounting; Assembling; Disassembling specially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M5/00—Engine beds, i.e. means for supporting engines or machines on foundations

Definitions

  • ABSTRACT A supporting structure for the transmissions and/or electric motors of vertical centrifugal pumps wherein the foundation is formed with a polygonal opening and carries support points each of which is recessed into the foundation midway between two corner portions of the opening.
  • a metallic frame of polygonal outline consists of profiled frame members which support and extend tangentially of a ring-shaped flange for connection to the motor of a centrifugal pump. The corners of the frame rest on and are secured to the support points so that the frame is angularly offset relative to the surfaces flanking the opening in the foundation. This reduces the length and weight of the frame members as well as the magnitude of bending stresses.
  • the natural frequency of the frame is higher than the exciter frequency when the motor which is carried by the supporting structure is in actual use.
  • the present invention relates to improvements in supporting structures for prime movers of fluidoperated machines, especially vertical centrifugal pumps. More particularly, the invention relates to improvements in supporting structures for the transmissions and/or electric motors which serve to drive vertical centrifugal pumps.
  • An object of the invention is to provide a novel and improved supporting structure for prime movers of hydraulic machines, especially for transmissions and/or electric motors which are used to drive vertical centrifugal pumps for the circulation of coolant, clean water, waste water and/or other liquids.
  • Another object of the invention is to provide a sup porting structure whose behavior in actual use can be calculated in advance with a high degree of accuracy a polygonal opening and the support points are reand whose natural frequency can be made so high that it invariably exceeds the normal exciter frequencies.
  • a further object of the invention is to provide a supporting structure consisting of a foundation and a metallic frame wherein the parts of the frame are subjected to negligible torsional stresses and to bending stresses which are much lower than the bendingv stresses upon theframe parts of conventional supporting structures.
  • An additional object of the invention is to provide a supportin g structure wherein the static and dynamic forces are transmitted to the foundation by way of bending moments and free of torsion.
  • Stillanother object of the invention is to provide a novel and improved mounting of the frame on the foundation of a supporting structure for the electric motors of vertical centrifugal pumps.
  • the invention is embodied in a supporting structure for prime movers of hydraulic machines, especially for transmissions and/or electric motors of vertical centrifugal pumps.
  • the supporting structure comprises a foundation which may constitute the floor or roof of a plant, at least three spaced-apart support points provided on or in the foundation, a polygonal frame including a plurality of preferably profiled metallic frame members which are rigidly connected (preferably welded) to each other at the corners of the frame, and a substantially annular motorcarrier (preferably a ringshaped flange) which is supported by the frame so that the frame members are disposed substantially tangentially of the carrier.
  • Each of the support points in or on the foundation serves as a rest for a different corner of the frame so that, when the motor which is supported by the carrier is in use, the static and dynamic forces to which the frame members are subjected are transcessed into the foundation in such a way that each thereof is located intermediate (preferably exactly midway) between two corner portions of the opening.
  • the opening and the frame have a square outline, the frame can be angularly offset by relative to the opening.
  • FIG. 1 is a plan view of a supporting structure which embodies the invention.
  • FIG. 2 is a vertical sectional view as seen in the direction of arrows from the line A-B of FIG. 1.
  • the supporting structure which is best shown in FIGS. 1 and 2 comprises a foundation 5 having a polygonal opening 4, here shown as a square opening 4.
  • the foundation 5 is provided with four built-in or recessed support points 6' each of which is adjacent to the opening 4 and is located intermediate, preferably exactly midway, between two neighboring corner portions of the opening.
  • the supporting structure further comprises a metallic frame I which is also of polygonal outline and is shown in the form of a square including four welded-together profiled metallic frame members 2 which extend tangentially of and support a round carrier or flange 3 for the transmission and/or electric motor (not shown) which drives a vertical centrifugal pump, not shown.
  • the foundation 5 may constitute the floor or the roof of a shop where the centrifugal pump is mounted to circulate liquid coolant, fresh water or waste water.
  • the frame members 2 meet at the four corners 6 of the frame 1 and each of the four corners 6 is supported by and is secured to one of the support points 6' in the foundation 5. Due to the fact that the profiled frame members 2 extend tangentially or substantially tangentially of the flange 3, the weight of the parts which are secured to the flange 3 and the exciting forces which develop when the centrifugal pump is in use produce stresses which are transmitted to the frame 1 in such a way that the frame is not subjected to any torsional stresses and only to moderate bending stresses. It will be noted that the members 2 of the frame 1 form a square which is angularly offset by 90 relative to the side surfaces of the foundation which surround the opening 4.
  • the frame members of the frame are parallel to the surfaces bounding the opening in the foundation.
  • An advantage of the improved supporting structure is that the length of the frame members 2 can be reduced to approximately 70 percent of the length of frame members in conventional supporting structures. The weight of the bending moment upon the frame members is also reduced to 70 percent. The extent of flexing in the central portions of frame members 2 is reduced to 35 percent of the extent of flexing of frame members in conventional supporting structures. This results in a rise of natural frequency to about l70 percent of natural frequency of conventional supporting structures.
  • the improved supporting structure provides a superior, safer and vibration-free carriage for the transmissions and/or electric motors of centrifugal pumps. All static and dynamic forces are transmitted directly to the frame 1 with accurately determinable bending moments and free of torsion. The savings in material are substantial even though the weight of the frame is less and its rigidity is higher than that of frames in conventional supporting structures.
  • the frame can be provided at little additional cost with reinforcing or stiffening means (not shown) to further increase the natural frequency.
  • a supporting structure as defined in claim I wherein said frame has a substantially rectangular outline and the number of said support points is'four so that each of said support points serves as a rest for a different corner of said frame.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Motor Or Generator Frames (AREA)
US343757A 1972-03-22 1973-03-22 Supporting structure for motors of vertical centrifugal pumps Expired - Lifetime US3873052A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2213852A DE2213852C3 (de) 1972-03-22 1972-03-22 Antriebsmaschinenträger für vertikale Kreiselpumpen

Publications (1)

Publication Number Publication Date
US3873052A true US3873052A (en) 1975-03-25

Family

ID=5839740

Family Applications (1)

Application Number Title Priority Date Filing Date
US343757A Expired - Lifetime US3873052A (en) 1972-03-22 1973-03-22 Supporting structure for motors of vertical centrifugal pumps

Country Status (8)

Country Link
US (1) US3873052A (ja)
JP (1) JPS6014199B2 (ja)
AT (1) AT317684B (ja)
DE (1) DE2213852C3 (ja)
FR (1) FR2177383A5 (ja)
GB (1) GB1399951A (ja)
IT (1) IT981455B (ja)
NL (1) NL156794B (ja)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4156706A (en) * 1978-01-16 1979-05-29 The Marley Cooling Tower Company Fan cylinder having invisible eased inlet
US5339652A (en) * 1993-09-17 1994-08-23 Tecumseh Products Company Sound and vibration absorbing damper
CN102242646A (zh) * 2010-05-13 2011-11-16 上海电气电站设备有限公司 汽轮机的低压外缸下半的低压钢架的布置结构
CN102777425A (zh) * 2012-08-25 2012-11-14 中国石化集团胜利石油管理局供水公司 大型离心泵叶轮拆装平台

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2533664A1 (fr) * 1982-09-24 1984-03-30 Robatel Slpi Dispositif de machine tournante supportee par une dalle de beton ou analogue
JPS62228600A (ja) * 1986-03-31 1987-10-07 株式会社ブリヂストン 止水材
CN108150765A (zh) * 2017-12-24 2018-06-12 吴宗泽 一种农业灌溉用潜水泵支架
DE102021103066A1 (de) 2021-02-10 2022-08-11 Viessmann Climate Solutions Se Wärmepumpe

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1476062A (en) * 1920-03-18 1923-12-04 Westinghouse Electric & Mfg Co Means for supporting and for connecting bodies, machines, or other apparatus
US1882347A (en) * 1928-12-14 1932-10-11 Glascote Company Apparatus for making glass-coated pipe coils
US2126660A (en) * 1934-08-29 1938-08-09 Gen Motors Corp Spring type vibration isolating apparatus
US3145910A (en) * 1961-06-05 1964-08-25 Nutone Inc Spring mount for fan motor of ventilating equipment
US3520634A (en) * 1966-12-02 1970-07-14 Bbc Brown Boveri & Cie Exhaust steam housing for low pressure steam turbines
US3659817A (en) * 1969-03-31 1972-05-02 Shell Oil Co Tank for liquid cargo

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1476062A (en) * 1920-03-18 1923-12-04 Westinghouse Electric & Mfg Co Means for supporting and for connecting bodies, machines, or other apparatus
US1882347A (en) * 1928-12-14 1932-10-11 Glascote Company Apparatus for making glass-coated pipe coils
US2126660A (en) * 1934-08-29 1938-08-09 Gen Motors Corp Spring type vibration isolating apparatus
US3145910A (en) * 1961-06-05 1964-08-25 Nutone Inc Spring mount for fan motor of ventilating equipment
US3520634A (en) * 1966-12-02 1970-07-14 Bbc Brown Boveri & Cie Exhaust steam housing for low pressure steam turbines
US3659817A (en) * 1969-03-31 1972-05-02 Shell Oil Co Tank for liquid cargo

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4156706A (en) * 1978-01-16 1979-05-29 The Marley Cooling Tower Company Fan cylinder having invisible eased inlet
US5339652A (en) * 1993-09-17 1994-08-23 Tecumseh Products Company Sound and vibration absorbing damper
CN102242646A (zh) * 2010-05-13 2011-11-16 上海电气电站设备有限公司 汽轮机的低压外缸下半的低压钢架的布置结构
CN102242646B (zh) * 2010-05-13 2014-09-03 上海电气电站设备有限公司 汽轮机的低压外缸下半的低压钢架的布置结构
CN102777425A (zh) * 2012-08-25 2012-11-14 中国石化集团胜利石油管理局供水公司 大型离心泵叶轮拆装平台

Also Published As

Publication number Publication date
NL7304062A (ja) 1973-09-25
NL156794B (nl) 1978-05-16
DE2213852B2 (de) 1974-06-06
JPS6014199B2 (ja) 1985-04-11
FR2177383A5 (ja) 1973-11-02
DE2213852C3 (de) 1975-01-23
AT317684B (de) 1974-09-10
JPS4913703A (ja) 1974-02-06
GB1399951A (en) 1975-07-02
DE2213852A1 (de) 1973-09-27
IT981455B (it) 1974-10-10

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