US3317080A - Tanks for inductive apparatus - Google Patents

Tanks for inductive apparatus Download PDF

Info

Publication number
US3317080A
US3317080A US346224A US34622464A US3317080A US 3317080 A US3317080 A US 3317080A US 346224 A US346224 A US 346224A US 34622464 A US34622464 A US 34622464A US 3317080 A US3317080 A US 3317080A
Authority
US
United States
Prior art keywords
wall
tank
pads
beam member
inductive apparatus
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
US346224A
Inventor
Buttrick Deryck Lelean
Milner Max
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.)
Ferranti International PLC
Original Assignee
Ferranti PLC
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 Ferranti PLC filed Critical Ferranti PLC
Application granted granted Critical
Publication of US3317080A publication Critical patent/US3317080A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/42—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by the mode of stressing
    • F16F1/44—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by the mode of stressing loaded mainly in compression
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating
    • H01F27/10—Liquid cooling
    • H01F27/12—Oil cooling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/33—Arrangements for noise damping
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2236/00—Mode of stressing of basic spring or damper elements or devices incorporating such elements
    • F16F2236/04—Compression

Definitions

  • inductive apparatus contained within a tank may generate noise which is transmitted to the tank.
  • noise is generated by vibration of the core and is transmitted through the oil and the core supports to the walls of the tank.
  • the amplitude of the noise radiated by the tank depends on its mass and stiffness and it is sometimes desirable to reduce the stiffness of the tank walls in order to alter the ratio of mass to stiffness and thereby reduce the amplitude of the noise radiated.
  • At least one wall of a tank for inductive apparatus is provided with one or more stiifeners each comprising a rigid beam loosely secured at intervals along its length to said wall, said beam being spaced from said wall such that said wall is free to vibrate but distortion of said wall is limited by said beam.
  • said beam is spaced from said wall by one or more resilient spacers.
  • FIGURE 1 is an elevation of a transformer tank provided with stiifeners in accordance with the invention.
  • FIGURE 2 is an enlarged section of one wall of the tank shown in FIGURE 1.
  • the transformer tank is provided on each wall 1 with stiffeners each of which comprises a T-sectioned beam 2 loosely secured at intervals along its length to the wall 1 by bolts 3 which pass freely through the beam 2.
  • a resilient layer 4 is interposed between the beam 2 and the wall 1 and steel pads 5 are provided at the ends of the beam 2 which is supported such that there is a small gap between the pads 5 and the wall 1.
  • the beams 2 need not necessarily be T-sectioned as described above, and although the bolts 3 have been 3,317,080 Patented May 2, 1967 shown as being threaded directly into the walls 1, suitable pads may be welded to the walls to receive the bolts if the walls do not have sufiicient thickness. Also, the steel pads 5 may be welded to the wall 1 instead of the beam 2 such that there is a small gap between the pads 5 and the beam 2, and further pads may be provided along the length of the beam 2 such that the stiffeners will also resist distortion due to internal pressure. Furthermore, although the tank in FIGURE 1 has been shown as having only vertical stiifeners, horizontal or angular stiffeners may be provided in addition to or instead of the vertical stiffeners shown. Furthermore, if required, the stiffeners may be continuous around the corners of the tank.
  • a tank for inductive apparatus at least one wall of said tank being provided with one or more stiifeners, said stiffeners each comprising a rigid beam member more rigid than said wall and loosely secured at intervals along its length to said wall, said beam member being spaced from said wall such that said wall is free to vibrate, but distortion of said wall is limited by said beam member, and metallic pads disposedbetween said wall and each said beam member, said metallic pads being secured to one of said wall or said beam member such that said pads are spaced from the other of said wall or said beam member by a small gap.
  • a tank for inductive apparatus as claimed in claim 1 in which said pads are secured to said wall adjacent each said beam, said pads being spaced from each said beam by a small gap.
  • a tank for inductive apparatus as claimed in claim 1 in which said pads are secured to each said beam, said pads being spaced from said wall by a small gap.
  • a tank for inductive apparatus at least one wall of said tank being provided with one or more stiffeners each comprising a rigid beam loosely secured at intervals along its length to said wall, said beam(s) being spaced from said wall by resilient spacing means such that said wall is free to vibrate but distortion of said wall is limited by said beam(s) and metallic pads secured to each said beam, said pads being spaced from said wall by a small gap.
  • a tank for inductive apparatus as claimed in claim 4 in which said pads are secured at the two ends of each said beam.
  • a tank for inductive apparatus at least one wall of said tank being provided with one or more stiifeners, said stiifeners each comprising a rigid beam member more rigid than said wall and loosely secured at intervals along the length of saidwall, said beam member being spaced from said wall such that said wall is free to vibrate, but distortion of said wall is limited by said beam member, a layer of resilient material interposed between said beam member and said wall member and extending along substantially the full length of said beam member, and metallic pads secured between said wall and each beam member adjacent opposite ends of said resilient layer, said pads being spaced from either said wall or said beam member by a small gap.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Child & Adolescent Psychology (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Housings And Mounting Of Transformers (AREA)

Description

May 2, 1967 BUTTRlCK ET AL 3,317,080
TANKS FOR INDUCTIVE APPARATUS Filed Feb. 20, 1964 g 00 oo 00 i Z i OO--- 3---+ O 0o 3 F/GZ.
lnvenlors Attorneys United States Patent 3. 6 Claims. Cl. 220-71 This invention relates to tanks for inductive apparatus.
In operation inductive apparatus contained within a tank may generate noise which is transmitted to the tank. In an oil filled transformer, for example, noise is generated by vibration of the core and is transmitted through the oil and the core supports to the walls of the tank. The amplitude of the noise radiated by the tank depends on its mass and stiffness and it is sometimes desirable to reduce the stiffness of the tank walls in order to alter the ratio of mass to stiffness and thereby reduce the amplitude of the noise radiated. Previously, it has not been possible to reduce the stiffness to the desired extent since a minimum stiffness is required to prevent distortion of the tank walls beyond permissible limits, for example during vacuum processing or during testing of the apparatus under vacuum or pressure.
It is an object of the present invention to provide a tank for inductive apparatus in which the walls of the tank may have a lower stiffness than the walls of previously known tanks used under similar conditions.
According to the present invention at least one wall of a tank for inductive apparatus is provided with one or more stiifeners each comprising a rigid beam loosely secured at intervals along its length to said wall, said beam being spaced from said wall such that said wall is free to vibrate but distortion of said wall is limited by said beam.
Preferably, said beam is spaced from said wall by one or more resilient spacers.
The present invention will now be described by way of example with reference to the accompanying drawings in which:
FIGURE 1 is an elevation of a transformer tank provided with stiifeners in accordance with the invention, and
FIGURE 2 is an enlarged section of one wall of the tank shown in FIGURE 1.
Referring now to the drawings the transformer tank is provided on each wall 1 with stiffeners each of which comprises a T-sectioned beam 2 loosely secured at intervals along its length to the wall 1 by bolts 3 which pass freely through the beam 2. A resilient layer 4 is interposed between the beam 2 and the wall 1 and steel pads 5 are provided at the ends of the beam 2 which is supported such that there is a small gap between the pads 5 and the wall 1.
The core and windings of the transformer are mounted in the tank in the usual manner and when the transformer is energised the noise vibrations transmitted to the tank cause the walls 1 to vibrate, the amplitude of the vibrations being of the order of a thousandth of an inch. These vibrations 'are not transmitted to the beams 2 which therefore add mass to the walls 1 without affecting their stiffness with regard to the noise vibrations. When the tank is evacuated, however, as when vacuum processing the transformer during manufacture, each wall is distorted until the pads 5 engage the wall and further dis tortion is then resisted by the beams 2 which have sufiicient rigidity to limit the distortion to a safe value. Since the distortion of the walls is limited in this manner their stiffness may be reduced to the desired extent.
The beams 2 need not necessarily be T-sectioned as described above, and although the bolts 3 have been 3,317,080 Patented May 2, 1967 shown as being threaded directly into the walls 1, suitable pads may be welded to the walls to receive the bolts if the walls do not have sufiicient thickness. Also, the steel pads 5 may be welded to the wall 1 instead of the beam 2 such that there is a small gap between the pads 5 and the beam 2, and further pads may be provided along the length of the beam 2 such that the stiffeners will also resist distortion due to internal pressure. Furthermore, although the tank in FIGURE 1 has been shown as having only vertical stiifeners, horizontal or angular stiffeners may be provided in addition to or instead of the vertical stiffeners shown. Furthermore, if required, the stiffeners may be continuous around the corners of the tank.
What we claim is:
1. A tank for inductive apparatus, at least one wall of said tank being provided with one or more stiifeners, said stiffeners each comprising a rigid beam member more rigid than said wall and loosely secured at intervals along its length to said wall, said beam member being spaced from said wall such that said wall is free to vibrate, but distortion of said wall is limited by said beam member, and metallic pads disposedbetween said wall and each said beam member, said metallic pads being secured to one of said wall or said beam member such that said pads are spaced from the other of said wall or said beam member by a small gap.
2. A tank for inductive apparatus as claimed in claim 1 in which said pads are secured to said wall adjacent each said beam, said pads being spaced from each said beam by a small gap.
3. A tank for inductive apparatus as claimed in claim 1 in which said pads are secured to each said beam, said pads being spaced from said wall by a small gap.
4. A tank for inductive apparatus, at least one wall of said tank being provided with one or more stiffeners each comprising a rigid beam loosely secured at intervals along its length to said wall, said beam(s) being spaced from said wall by resilient spacing means such that said wall is free to vibrate but distortion of said wall is limited by said beam(s) and metallic pads secured to each said beam, said pads being spaced from said wall by a small gap.
5. A tank for inductive apparatus as claimed in claim 4 in which said pads are secured at the two ends of each said beam.
6. A tank for inductive apparatus, at least one wall of said tank being provided with one or more stiifeners, said stiifeners each comprising a rigid beam member more rigid than said wall and loosely secured at intervals along the length of saidwall, said beam member being spaced from said wall such that said wall is free to vibrate, but distortion of said wall is limited by said beam member, a layer of resilient material interposed between said beam member and said wall member and extending along substantially the full length of said beam member, and metallic pads secured between said wall and each beam member adjacent opposite ends of said resilient layer, said pads being spaced from either said wall or said beam member by a small gap.
"Ice
References Cited by the Examiner UNITED STATES PATENTS 698,497 4/ 1902. Hill 22071 1,359,057 11/1920 Guldaman 22071 1,427,525 8/ 1922 Felten 220-12 2,170,525 8/1939 Ball 22071 2,173,804 9/1939 Hanrahan 220-71 THER-ON E. CONDON, Primary Examiner.
JAMES R. GARRET, Examiner.

Claims (1)

1. A TANK FOR INDUCTIVE APPARATUS, AT LEAST ONE WALL OF SAID TANK BEING PROVIDED WITH ONE OR MORE STIFFENERS, SAID STIFFENERS EACH COMPRISING A RIGID BEAM MEMBER MORE RIGID THAN SAID WALL AND LOOSELY SECURED AT INTERVALS ALONG ITS LENGTH TO SAID WALL, SAID BEAM MEMBER BEING SPACED FROM SAID WALL SUCH THAT SAID WALL IS FREE TO VIBRATE, BUT DISTORTION OF SAID WALL IS LIMITED BY SAID BEAM MEMBER, AND METALLIC PADS DISPOSED BETWEEN SAID WALL AND EACH SAID BEAM MEMBER, SAID METALLIC PADS BEING SECURED TO ONE OF SAID WALL OR SAID BEAM MEMBER SUCH THAT SAID PADS ARE SPACED FROM THE OTHER OF SAID WALL OR SAID BEAM MEMBER BY A SMALL GAP.
US346224A 1963-02-23 1964-02-20 Tanks for inductive apparatus Expired - Lifetime US3317080A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7382/63A GB984626A (en) 1963-02-23 1963-02-23 Improvements relating to tanks for inductive apparatus

Publications (1)

Publication Number Publication Date
US3317080A true US3317080A (en) 1967-05-02

Family

ID=9832060

Family Applications (1)

Application Number Title Priority Date Filing Date
US346224A Expired - Lifetime US3317080A (en) 1963-02-23 1964-02-20 Tanks for inductive apparatus

Country Status (3)

Country Link
US (1) US3317080A (en)
CH (1) CH416820A (en)
GB (1) GB984626A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5183178A (en) * 1990-09-24 1993-02-02 Flemming Elvin Jensen Bulk Containers
DE102009023026A1 (en) * 2009-05-28 2010-12-02 Areva Energietechnik Gmbh Electric transformer or electric reactor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58143510A (en) * 1982-02-20 1983-08-26 Hitachi Ltd Stationally induction electric apparatus

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US698497A (en) * 1901-01-30 1902-04-29 Thomas Hill Ash or refuse can.
US1359057A (en) * 1920-09-08 1920-11-16 Guldaman Lawrence Ash-can or the like
US1427525A (en) * 1920-12-28 1922-08-29 Charles H Felten Disposal can
US2170525A (en) * 1936-10-05 1939-08-22 Frances A Ball Receptacle
US2173804A (en) * 1938-09-07 1939-09-19 Petroleum Iron Works Company O Rubber rolling hoop for steel barrels

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US698497A (en) * 1901-01-30 1902-04-29 Thomas Hill Ash or refuse can.
US1359057A (en) * 1920-09-08 1920-11-16 Guldaman Lawrence Ash-can or the like
US1427525A (en) * 1920-12-28 1922-08-29 Charles H Felten Disposal can
US2170525A (en) * 1936-10-05 1939-08-22 Frances A Ball Receptacle
US2173804A (en) * 1938-09-07 1939-09-19 Petroleum Iron Works Company O Rubber rolling hoop for steel barrels

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5183178A (en) * 1990-09-24 1993-02-02 Flemming Elvin Jensen Bulk Containers
DE102009023026A1 (en) * 2009-05-28 2010-12-02 Areva Energietechnik Gmbh Electric transformer or electric reactor

Also Published As

Publication number Publication date
GB984626A (en) 1965-03-03
CH416820A (en) 1966-07-15

Similar Documents

Publication Publication Date Title
US4371858A (en) Static induction apparatus
US4352643A (en) Structure for vibration isolation in an apparatus with a vacuum system
US3723027A (en) Pumping units
US3317080A (en) Tanks for inductive apparatus
GB1126767A (en) Measuring system
DE3914413A1 (en) METHOD AND ELECTRO-ACOUSTIC TRANSDUCER FOR EMITTING LOW-FREQUENCY SOUND WAVES IN A LIQUID
US3260974A (en) Noise reducing means for electrical apparatus
US2587204A (en) Railroad tank car
US1754308A (en) Machine-unit support
US3007122A (en) Self realigning waveguide support system
GB1036922A (en) Improvements relating to papermaking
GB864945A (en) Arrangement for the magnetic deflection of electron beam in cathode ray tubes, particularly for television purposes
DE4103895A1 (en) SOUND INSULATION FOR CONTAINERS, APPARATUS AND PIPELINES
KR840007478A (en) Method and apparatus for preventing damage caused by vibration of nuclear fuel rods
US3764100A (en) Compound-two-stage resilient isolation mounting for use in attenuating mechanical vibrations
US3184912A (en) Clock hands
US4513906A (en) Liquid tank weld cavitation protection
GB191418401A (en) Improvements in Buffers for Vessels.
ES314724A1 (en) Floating structure
GB574401A (en) Improvement in electrical apparatus adapted to operate at very high frequencies
KR840002412B1 (en) Stationary induction apparatus
DE1233937B (en) Liquid-insulated transformers or reactors with a sound-absorbing boiler cover
US4624388A (en) Liquid tank weld cavitation protection
US2996772A (en) Vacuum casting apparatus
JPS57162312A (en) Soundproofing device for stationary induction apparatus