US3723027A - Pumping units - Google Patents

Pumping units Download PDF

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Publication number
US3723027A
US3723027A US00175357A US3723027DA US3723027A US 3723027 A US3723027 A US 3723027A US 00175357 A US00175357 A US 00175357A US 3723027D A US3723027D A US 3723027DA US 3723027 A US3723027 A US 3723027A
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US
United States
Prior art keywords
box
pump
tank
liquid
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
US00175357A
Inventor
T Montelius
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Imo Industri AB
Original Assignee
Imo Industri AB
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Publication date
Application filed by Imo Industri AB filed Critical Imo Industri AB
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Publication of US3723027A publication Critical patent/US3723027A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/008—Reduction of noise or vibration
    • 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
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S60/00—Power plants
    • Y10S60/916—Unitary construction

Definitions

  • the box-like members are made from sheet metal coated with foam rubber or other soundabsorbing material.
  • the present invention relates to an improvement in pumping units comprising a pump and a motor which are immersed below the liquid level in a liquid tank.
  • the object of the invention is to provide an improved dampening of noise in such a unit.
  • an improved absorption of noise is achieved by providing within the tank a shield enclosing the pump and motor and consisting wholly or partly of sound absorbing material.
  • This shield is arranged so that free circulation of the fluid between the spaces within and outside .of the shield is possible.
  • the numeral 1 designates an oil tank having a cover 2.
  • a pump 3 together with a driving motor 4 is arranged so that both the pump and the motor are below the normal liquid level 5.
  • the pump and the motor are suspended by cables 6 in vibration dampers 7 of rubber.
  • a valve means 8 is positioned on the cover 2 and communicates with the pump outlet through a conduit 9.
  • a return conduit 10 extends from the valve to the interior of the tank. Further, conduits (notshown) extend from the valve for connection to other parts of the hydraulic installation, which are to be operated by hydraulic fluid.
  • a shield 11 enclosing the pump 3 and motor 4, in the embodiment shown, constructed as an open box having the open side facing downwards.
  • the box may be made from sheet metal coated with foam' rubber or other sound absorbing material. It is disposed by means of attachment members (not shown) so that its bottom edge is spaced a short distance above the tank bottom, whereby oil from the space outside of the box can enter the space within the box.
  • Thebox has suitable openings through which the above-mentioned conduits and cables extend.
  • the shape of the shield is unimportant, as long as it essentially encloses the pump and motor assembly, preferably both upwardly and laterally.
  • box 12 enclosing the pump motor assembly from below, i.e. having its open side at the top.
  • This box is made with somewhat larger dimensions than shield 11 and disposed so that it partly encloses box 11 with-a sufficient space therebetween to permit 'free circulation of liquid alternatively, box 11 could be made with dimensions such that it partly encloses box 12.
  • a pumping unit comprising a tank for containing a I liquid to be pumped, a pump 'and motor assembly.
  • pump and motor assembly comprising first and second box-like members, each made at least 'in part from sound-absorbing material, and each having one open

Abstract

Sound generated by a submerged motor-pump unit and transmitted through the liquid in which the unit is submerged is attenuated by shielding means comprising a first box-like member having a downwardly facing opening and a second box-like member having an upwardly facing opening and overlapping the first box-like member. The box-like members are made from sheet metal coated with foam rubber or other sound-absorbing material.

Description

United States Patent 1191 Related US. Application Data Montelius 1 1 Mar. 27,1973
54 PUMPING UNITS 3,087,578 4/1963 Reed et al ..1s1/33 K 3,102,246 11 1970 Honey et al. [75] Inventor g Montehus Djurslwlm 3,294,025 12 1966 Niemeyer et al. ..3 10/87 we 1,610,774 12/1926 Hanson ..417 312 73 A e: Akt'ebl t Imo-Industr', 1
[ 1 6 zf fi FOREIGN PATENTS OR APPLICATIONS g 448,08l 4/1948 Canada ..l8l/33.4 I 971,765 10 1964 Great Britain .....181 33.4
[21] Appl. No.: 175,357 1,114,626 12 1955 France ..181/33.4
Primary ExaminerCarlton R. Croyle Assistant Examiner-Richard E. Gluck AttorneyBusser, Smith and Harding [57] ABSTRACT Sound generated by a submerged motor-pump unit and transmitted through the liquid in which the .unit is upwardly facing opening and overlapping the first boxlike member. The box-like members are made from sheet metal coated with foam rubber or other soundabsorbing material.
1 Claim, 1 Drawing Figure PATENTEDHARZTIHB 3,728,027
INVENTOR TORSTEN MONTELIUS ATTORNEYS PUMPING UNITS This application is a continuation of Ser. No. 883,559 filed Dec. 9, 1969, now abandoned.
The present invention relates to an improvement in pumping units comprising a pump and a motor which are immersed below the liquid level in a liquid tank. The object of the invention is to provide an improved dampening of noise in such a unit.
It is known in hydraulic installations to dispose the main feeding pump of the installation together with its driving motor immersed in a hydraulic fluid tank. This has several advantages, inter alia that the motor and pump construction can be considerably simplified. However, difficult problems of preventing noise are encountered. Some of them can be solved by suspending the pump and motor assembly in vibration dampening members arranged in a suitable manner. However, vibrations from the pump may still be transmitted through the fluid to the tank walls and result in disturbing noise.
According to the present invention, an improved absorption of noise is achieved by providing within the tank a shield enclosing the pump and motor and consisting wholly or partly of sound absorbing material. This shield is arranged so that free circulation of the fluid between the spaces within and outside .of the shield is possible.
An embodiment of the invention is illustrated on the accompanying drawing.
Referring to the drawing, the numeral 1 designates an oil tank having a cover 2. A pump 3 together with a driving motor 4 is arranged so that both the pump and the motor are below the normal liquid level 5. In the embodiment illustrated, the pump and the motor are suspended by cables 6 in vibration dampers 7 of rubber. A valve means 8 is positioned on the cover 2 and communicates with the pump outlet through a conduit 9. A return conduit 10 extends from the valve to the interior of the tank. Further, conduits (notshown) extend from the valve for connection to other parts of the hydraulic installation, which are to be operated by hydraulic fluid.
According to this invention, there is provided a shield 11 enclosing the pump 3 and motor 4, in the embodiment shown, constructed as an open box having the open side facing downwards. The box may be made from sheet metal coated with foam' rubber or other sound absorbing material. It is disposed by means of attachment members (not shown) so that its bottom edge is spaced a short distance above the tank bottom, whereby oil from the space outside of the box can enter the space within the box. Thebox has suitable openings through which the above-mentioned conduits and cables extend.
The shape of the shield is unimportant, as long as it essentially encloses the pump and motor assembly, preferably both upwardly and laterally.
In order to further improve the dampening of noise, it is possible to provide a similar box 12 enclosing the pump motor assembly from below, i.e. having its open side at the top. This box is made with somewhat larger dimensions than shield 11 and disposed so that it partly encloses box 11 with-a sufficient space therebetween to permit 'free circulation of liquid alternatively, box 11 could be made with dimensions such that it partly encloses box 12.
I claim:
1. A pumping unit comprising a tank for containing a I liquid to be pumped, a pump 'and motor assembly.
disposed in the tank below the normal liquid level therein, andshielding means essentially enclosing the.
pump and motor assembly comprising first and second box-like members, each made at least 'in part from sound-absorbing material, and each having one open

Claims (1)

1. A pumping unit comprising a tank for containing a liquid to be pumped, a pump and motor assembly disposed in the tank below the normal liquid level therein, and shielding means essentially enclosing the pump and motor assembly comprising first and second box-like members, each made at least in part from sound-absorbing material, and each having one open end, said members having their open ends facing in opposite directions and being so arranged that one at least partially encloses the other with a space between their walls to allow circulation of liquid between the spaces within and outside of the shielding means.
US00175357A 1968-12-13 1971-08-26 Pumping units Expired - Lifetime US3723027A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE17112/68A SE328481B (en) 1968-12-13 1968-12-13

Publications (1)

Publication Number Publication Date
US3723027A true US3723027A (en) 1973-03-27

Family

ID=20303257

Family Applications (1)

Application Number Title Priority Date Filing Date
US00175357A Expired - Lifetime US3723027A (en) 1968-12-13 1971-08-26 Pumping units

Country Status (10)

Country Link
US (1) US3723027A (en)
CH (1) CH501979A (en)
DE (2) DE6948299U (en)
DK (1) DK126270B (en)
FI (1) FI51632C (en)
FR (1) FR2026115A1 (en)
GB (1) GB1255376A (en)
NO (1) NO129969B (en)
PL (1) PL69745B1 (en)
SE (1) SE328481B (en)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3789954A (en) * 1973-06-19 1974-02-05 Graco Inc Air motor noise suppressor
US3851725A (en) * 1973-09-17 1974-12-03 Continental Can Co Noise reduction kit for can closing machine
US4055173A (en) * 1975-04-21 1977-10-25 Knab James V Surgical masking and ventilating system
US4064903A (en) * 1976-07-06 1977-12-27 Towmotor Corporation Noise enclosure for hydraulic valve
US4149382A (en) * 1977-09-30 1979-04-17 Houston Elevator Service, Inc. Hydraulic elevator power assembly
US4347042A (en) * 1980-06-02 1982-08-31 Carrier Corporation Motor compressor unit and a method of reducing noise transmitted therefrom
US4657290A (en) * 1984-10-03 1987-04-14 Linden Craig L Co-generation plant module system
US4696626A (en) * 1985-02-08 1987-09-29 Nippon Air Brake Co., Ltd. Railroad car air compressor unit
US4736111A (en) * 1984-10-03 1988-04-05 Linden Craig L Cogeneration system
US4888003A (en) * 1988-02-29 1989-12-19 Johnson Gerald W Vacuum apparatus
EP0503329A1 (en) * 1991-03-14 1992-09-16 GMV MARTINI S.p.A. Acoustic insulator applicable in particular to hydraulic passenger and/or freight elevator pumps
US5346371A (en) * 1991-09-20 1994-09-13 Otis Elevator Company Hydraulic elevator oil tank
US5725361A (en) * 1993-02-02 1998-03-10 Mannesmann Rexroth Gmbh Hydraulic unit
US6393839B1 (en) * 1998-11-17 2002-05-28 Luk Fahrzeug-Hydraulik Gmbh & Co. Kg Pressurized medium delivery device
US20020185499A1 (en) * 2001-01-09 2002-12-12 Harrelson Glenn R. Carton with an improved dispensing feature
CN104047930A (en) * 2014-06-16 2014-09-17 刘坚 High integrated hydraulic pump station
US20150375966A1 (en) * 2014-06-30 2015-12-31 Thyssenkrupp Elevator Corporation Noise Abatement for Elevator Submersible Power Units
US20180055681A1 (en) * 2015-03-16 2018-03-01 Aliasghar Hariri Apparatuses and methods for disrupting and preventing snore
US10955168B2 (en) * 2017-06-13 2021-03-23 Enginuity Power Systems, Inc. Methods systems and devices for controlling temperature and humidity using excess energy from a combined heat and power system
US11352930B2 (en) * 2019-02-21 2022-06-07 Enginuity Power Systems, Inc. Muffler and catalytic converters for combined heating and power systems
US20220260064A1 (en) * 2019-12-13 2022-08-18 Kti Hydraulics Inc. Hydraulic Power Units with Submerged Motors

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4201523A (en) * 1978-01-23 1980-05-06 Olofsson Bjorn O E Device for cooling and silencing of noise of a compressor or vacuum pump
DE4406233A1 (en) * 1994-02-25 1995-08-31 Wilo Gmbh Device with an electric motor operated pump
DE19960224A1 (en) * 1999-12-14 2001-06-28 Mannesmann Rexroth Ag Arrangement for damping the sound emanating from a motor / pump unit

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1610774A (en) * 1924-11-28 1926-12-14 Motor Player Corp Suction-producing apparatus
CA448081A (en) * 1948-04-27 Philip Paxman Edward Sound insulating and absorbing means for internal combustion engines
FR1114626A (en) * 1954-11-19 1956-04-16 Silent engine cover
US3021914A (en) * 1958-07-11 1962-02-20 Wilson Albert Gerald Acoustical panel
US3087578A (en) * 1961-03-20 1963-04-30 Gates Acoustinet Inc Acoustical cabinet for office business machines
US3102246A (en) * 1958-12-17 1963-08-27 Mc Graw Edison Co Noise reducing means for transformer
GB971765A (en) * 1961-03-20 1964-10-07 Parsons C A & Co Ltd Improvements in and relating to sound insulation
US3294025A (en) * 1965-08-06 1966-12-27 Acf Ind Inc Electric centrifugal in-the-tank pump

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA448081A (en) * 1948-04-27 Philip Paxman Edward Sound insulating and absorbing means for internal combustion engines
US1610774A (en) * 1924-11-28 1926-12-14 Motor Player Corp Suction-producing apparatus
FR1114626A (en) * 1954-11-19 1956-04-16 Silent engine cover
US3021914A (en) * 1958-07-11 1962-02-20 Wilson Albert Gerald Acoustical panel
US3102246A (en) * 1958-12-17 1963-08-27 Mc Graw Edison Co Noise reducing means for transformer
US3087578A (en) * 1961-03-20 1963-04-30 Gates Acoustinet Inc Acoustical cabinet for office business machines
GB971765A (en) * 1961-03-20 1964-10-07 Parsons C A & Co Ltd Improvements in and relating to sound insulation
US3294025A (en) * 1965-08-06 1966-12-27 Acf Ind Inc Electric centrifugal in-the-tank pump

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3789954A (en) * 1973-06-19 1974-02-05 Graco Inc Air motor noise suppressor
US3851725A (en) * 1973-09-17 1974-12-03 Continental Can Co Noise reduction kit for can closing machine
US4055173A (en) * 1975-04-21 1977-10-25 Knab James V Surgical masking and ventilating system
US4064903A (en) * 1976-07-06 1977-12-27 Towmotor Corporation Noise enclosure for hydraulic valve
US4149382A (en) * 1977-09-30 1979-04-17 Houston Elevator Service, Inc. Hydraulic elevator power assembly
US4347042A (en) * 1980-06-02 1982-08-31 Carrier Corporation Motor compressor unit and a method of reducing noise transmitted therefrom
US4657290A (en) * 1984-10-03 1987-04-14 Linden Craig L Co-generation plant module system
US4736111A (en) * 1984-10-03 1988-04-05 Linden Craig L Cogeneration system
US4924818A (en) * 1984-10-03 1990-05-15 Linden Craig L Insulated engine
US4696626A (en) * 1985-02-08 1987-09-29 Nippon Air Brake Co., Ltd. Railroad car air compressor unit
US4888003A (en) * 1988-02-29 1989-12-19 Johnson Gerald W Vacuum apparatus
EP0503329A1 (en) * 1991-03-14 1992-09-16 GMV MARTINI S.p.A. Acoustic insulator applicable in particular to hydraulic passenger and/or freight elevator pumps
US5346371A (en) * 1991-09-20 1994-09-13 Otis Elevator Company Hydraulic elevator oil tank
US5725361A (en) * 1993-02-02 1998-03-10 Mannesmann Rexroth Gmbh Hydraulic unit
US6393839B1 (en) * 1998-11-17 2002-05-28 Luk Fahrzeug-Hydraulik Gmbh & Co. Kg Pressurized medium delivery device
US20020185499A1 (en) * 2001-01-09 2002-12-12 Harrelson Glenn R. Carton with an improved dispensing feature
CN104047930A (en) * 2014-06-16 2014-09-17 刘坚 High integrated hydraulic pump station
CN104047930B (en) * 2014-06-16 2016-04-06 刘坚 A kind of high integrated hydraulic pump station
US20150375966A1 (en) * 2014-06-30 2015-12-31 Thyssenkrupp Elevator Corporation Noise Abatement for Elevator Submersible Power Units
US20180055681A1 (en) * 2015-03-16 2018-03-01 Aliasghar Hariri Apparatuses and methods for disrupting and preventing snore
US10335310B2 (en) * 2015-03-16 2019-07-02 Aliasghar Hariri Apparatuses and methods for disrupting and preventing snore
US10434005B2 (en) 2015-03-16 2019-10-08 Aliasghar Hariri Apparatuses and methods for disrupting and preventing snore
US11318039B2 (en) 2015-03-16 2022-05-03 Aliasghar Hariri Apparatuses and methods for disrupting and preventing snore
US10955168B2 (en) * 2017-06-13 2021-03-23 Enginuity Power Systems, Inc. Methods systems and devices for controlling temperature and humidity using excess energy from a combined heat and power system
US11352930B2 (en) * 2019-02-21 2022-06-07 Enginuity Power Systems, Inc. Muffler and catalytic converters for combined heating and power systems
US20220260064A1 (en) * 2019-12-13 2022-08-18 Kti Hydraulics Inc. Hydraulic Power Units with Submerged Motors

Also Published As

Publication number Publication date
NO129969B (en) 1974-06-17
FI51632C (en) 1977-02-10
DK126270B (en) 1973-06-25
SE328481B (en) 1970-09-14
FR2026115A1 (en) 1970-09-11
FI51632B (en) 1976-11-01
DE6948299U (en) 1970-03-26
CH501979A (en) 1971-01-15
GB1255376A (en) 1971-12-01
DE1962667A1 (en) 1970-07-09
PL69745B1 (en) 1973-08-31

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