US3255298A - Terminal member for liquid cooled rotor winding - Google Patents

Terminal member for liquid cooled rotor winding Download PDF

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Publication number
US3255298A
US3255298A US322488A US32248863A US3255298A US 3255298 A US3255298 A US 3255298A US 322488 A US322488 A US 322488A US 32248863 A US32248863 A US 32248863A US 3255298 A US3255298 A US 3255298A
Authority
US
United States
Prior art keywords
tubular
fitting
spring
liquid cooled
cooled rotor
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
US322488A
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English (en)
Inventor
Meyer Eugen
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.)
BBC Brown Boveri AG Germany
Original Assignee
Bbc Brown Boveri & Cie
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 Bbc Brown Boveri & Cie filed Critical Bbc Brown Boveri & Cie
Application granted granted Critical
Publication of US3255298A publication Critical patent/US3255298A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating

Definitions

  • the present invention relates to apparatus for supplying a liquid coolant to hollow conductor structures for electric machinery.
  • An example of such liquid cooling is the hollow conductor structure for the stationary, stator winding of turbo-generators wherein conventional tubing is used for the terminal or connecting piece to .convey the liquid coolant to and from the hollow conductor structure.
  • the purpose of the invention is therefore to provide an improved construction for a hollow terminal or connecting piece through which the liquid coolant can be passed into and out of the hollow conductor structure, and particularly for application to the rotary field structure of synchronous machines with salient poles, such as hydroelectric generating apparatus.
  • the terminal or connecting piece is characterized by a flexible part including at least one helically wound spring made from me'tallic tubing so as to establish a fluid passageway therethrough from one end to the other, the metallic tubing being secured at its opposite ends to tubular end fittings, the interiors of which communicate with the interior of the metallic tubing from which the spring is made, one of these tubular end fittings being attached to one end of a tubular metallically reinforced electrically insulating memher and in fluid communication therewith.
  • the helically coiled hollow spring may be composed of one spring, or a plurality of helical springs which may be arranged either in parallel or concentrically, one within the other.
  • the electrically insulating part features a glass fiber sleeve surrounded by a tubular part made from a casting resin and which is reinforced mechanically by a metallic insert.
  • the terminal piece for connection to the lead-in or lead-out end of the hollow conductor coil on the field pole of the rotor structure is seen to be comprised of a flexible part 1 which is secured to a rigid, electrically insulating part 2.
  • the flexible part 1 is comprised of one or more helically wound springs made from metal- I lie tubing so as to establish a fluid passageway through the metal of the spring itself from one end to the other for the fluid coolant.
  • two Ice such springs are used and these are arranged in parallel so to speak.
  • a plurality of such springs may be arranged concentrically one within the other. The number of springs, and the number of turns for each spring will very, dependent upon the elasticity required for the particular application.
  • the electrically insulating part 2 is comprised of an inner glass fiber sleeve 3 surrounded by a tubular housing 4 made from a suitable casting resin and which is mechanically reinforced by means of one or more metallic inserts.
  • these inserts shown at 5 and 5' are each seen to be comprised of a an annular base portion into which a corresponding end of the glass fiber sleeve 3 is fitted and an annular sleeve portion 5a which is cast-in with the resin body 4.
  • the upper end of the helically wound tubular spring 1 is secured fast by welding within an annular recess 6a in the lower face of a tubular end fitting 6 and the-latter is provided with an upwardly facing peripheral flange 6b which is welded to the peripheral part of the reinforcing insert 5'.
  • the lower end of tubular spring l is similarly secured fast by welding within an annular recess 6a in the upper face of another tubular end fitting 6 andthe latter is provided with a downwardly facing peripheral flange 6b which is welded to a peripheral part of a tubular coupling or union 7.
  • a similar tubular coupling or union 8 is provided at the opposite end of the terminal piece and one part of the union 8 is welded to the base portion of the upper metallic reinforcing insert 5.
  • the improved flexible and composite terminal structure for the rotor winding is comprised of the hollow unions 7 and 8, the tubular end fittings 6 and 6', the helically wound metallic tubing 1, and the tubular metallically reinforced electrical insulating member 2.
  • a composite tubular terminal piece for liquid cooled rotor windings of electrical machines which comprises a flexible part constituted by a helical spring made from metallic tubing such as to establish a fluid passageway through the metal of the spring itself from one thereof to the other, a tubular fitting at each end of said helical spring, each said fitting being connected to the corresponding end of said helical spring so as to establish a fluid communication between the interior of said fitting and said fluid passageway through said spring, a tubular metallically reinforced electrically insulating member having one end thereof connected to one of said tubular end fittings and in fluid communication therewith, and a further tubular fitting connected to the opposite end of said tubular insulating member and in fluid communication References Cited by the Examiner therewith.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Windings For Motors And Generators (AREA)
  • Motor Or Generator Frames (AREA)
US322488A 1962-12-14 1963-11-08 Terminal member for liquid cooled rotor winding Expired - Lifetime US3255298A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1471362A CH397054A (de) 1962-12-14 1962-12-14 Anschlusstück für flüssigkeitsgekühlte Rotorwicklungen

Publications (1)

Publication Number Publication Date
US3255298A true US3255298A (en) 1966-06-07

Family

ID=4403222

Family Applications (1)

Application Number Title Priority Date Filing Date
US322488A Expired - Lifetime US3255298A (en) 1962-12-14 1963-11-08 Terminal member for liquid cooled rotor winding

Country Status (3)

Country Link
US (1) US3255298A (de)
AT (1) AT239363B (de)
CH (1) CH397054A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3404218A (en) * 1966-12-21 1968-10-01 Sprague Electric Co Weldable high voltage terminal
US4502529A (en) * 1981-09-30 1985-03-05 Varney Paul R Heat recovery system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1208938A (en) * 1914-08-18 1916-12-19 Emory D Finch Automobile-signal.
CH236471A (de) * 1939-03-11 1945-02-15 Suhner & Co Isoliermuffe zum Fernhalten von Streuströmen von unterirdischen metallenen Leitungen und Kabeln.
US2542841A (en) * 1946-02-18 1951-02-20 Rca Corp High-frequency coupling apparatus
US3163209A (en) * 1960-06-07 1964-12-29 United Aircraft Corp Heat storage unit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1208938A (en) * 1914-08-18 1916-12-19 Emory D Finch Automobile-signal.
CH236471A (de) * 1939-03-11 1945-02-15 Suhner & Co Isoliermuffe zum Fernhalten von Streuströmen von unterirdischen metallenen Leitungen und Kabeln.
US2542841A (en) * 1946-02-18 1951-02-20 Rca Corp High-frequency coupling apparatus
US3163209A (en) * 1960-06-07 1964-12-29 United Aircraft Corp Heat storage unit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3404218A (en) * 1966-12-21 1968-10-01 Sprague Electric Co Weldable high voltage terminal
US4502529A (en) * 1981-09-30 1985-03-05 Varney Paul R Heat recovery system

Also Published As

Publication number Publication date
AT239363B (de) 1965-04-12
CH397054A (de) 1965-08-15

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