Connection system for condenser and steam turbine and methods of assembling the same

{
  "publication_number": "US10570781B2",
  "country": "US",
  "kind": "B2",
  "title": "Connection system for condenser and steam turbine and methods of assembling the same",
  "abstract": "A connection system for coupling a steam turbine to a condenser is provided. The connection system includes a dog-bone connector, a first clamp, and a second clamp. The dog-bone connector includes a first end, a second end opposite the first end with respect to the third direction, and a body extending therebetween. The first clamp includes a first portion, a second portion coupled to the first portion, and a first retention cavity defined therebetween. The first clamp is configured to couple to one of the steam turbine and the condenser such that the first portion is movable relative to the second portion along the third direction. The second clamp is configured to couple to the other of the steam turbine and the condenser and includes a third portion, a fourth portion coupled to the third portion, and a second retention cavity defined therebetween.",
  "claims": [
    "1. A connection system for coupling a steam turbine to a condenser, said connection system defining a first direction, a second direction, and a third direction, the three directions orthogonal to each other, said connection system comprising: a resiliently deformable dog-bone connector comprising a curvilinear symmetrical first end, a second end opposite said first end with respect to the third direction, and a body extending therebetween; a first clamp comprising a first portion, a second portion coupled to said first portion, and a first retention cavity defined therebetween, wherein said first portion comprises a first curvilinear retention surface contoured complementary to a portion of said dog-bone connector first end and said second portion comprises a flat second retention surface which facilitates deforming another portion of the first end such that the deformed portion of the first end is contoured complimentary to the second retention surface, wherein said first and second retention surfaces cooperate to define said first retention cavity, and wherein said first clamp is configured to couple to one of the steam turbine and the condenser such that said first portion is movable relative to said second portion along the third direction and said first end is configured to slide in the third direction along said second retention surface; and a second clamp configured to couple to the other of the steam turbine and the condenser and comprising a third portion, a fourth portion coupled to said third portion, and a second retention cavity defined therebetween, wherein said second retention cavity is contoured complementarily to said second end of said dog-bone connector.",
    "2. The connection system according to claim 1, wherein said first portion comprises a first through-hole extending therethrough in the second direction and elongated in the third direction, and said first clamp further comprises a first fastener configured to be received through said first through-hole such that said first clamp and the one of the steam turbine and the condenser are coupled together.",
    "3. The connection system according to claim 1, wherein said second end is symmetrical, said third portion comprises a third retention surface contoured complementary to a portion of said dog-bone connector second end, and said fourth portion comprises a fourth retention surface contoured complementary to another portion of said dog-bone connector second end, and wherein said third and fourth retention surfaces cooperate to define said second retention cavity.",
    "4. The connection system according to claim 1, wherein said first portion comprises a fixation shoulder extending from said first portion towards said second portion, said fixation shoulder configured to interface with said first end of said dog-bone connector such that movement of said dog-bone connector relative to said first clamp is inhibited.",
    "5. The connection system according to claim 1 further comprising: a first spacer positioned between said first portion and said second portion, wherein said first spacer is configured to facilitate maintaining a first gap between said first portion and said second portion, and wherein said first spacer is configured to facilitate maintaining a parallel relationship between said first portion and said second portion; and a second spacer positioned between said third portion and said fourth portion, wherein said second spacer is configured to facilitate maintaining a second gap between said third portion and said fourth portion, and wherein said second spacer is configured to facilitate maintaining a parallel relationship between said third portion and said fourth portion.",
    "6. The connection system according to claim 1 further comprising a shield fixedly coupled to one of said first and second clamps and extending along the third direction between said first and second clamps, said shield coupled to the other of said first and second clamps for movement in the third direction with respect to said other of said first and second clamps.",
    "7. A steam turbine system comprising: a steam turbine; a condenser configured to receive steam exhausted from said steam turbine, said condenser comprising a condenser neck; and a connection system for coupling said steam turbine to said condenser neck, said connection system defining a first direction, a second direction, and a third direction, the three directions orthogonal to each other, said connection system comprising: a resiliently deformable dog-bone connector comprising a curvilinear symmetrical first end, a second end opposite said first end with respect to the third direction, and a body extending therebetween; a first clamp coupled to one of said steam turbine and said condenser neck, said first clamp comprising a first portion, a second portion coupled to said first portion, and a first retention cavity defined therebetween, wherein said first end of said dog-bone connector is retained in said first retention cavity, wherein said first portion comprises a first curvilinear retention surface contoured complementary to a portion of said dog-bone connector first end and said second portion comprises a flat second retention surface which facilitates deforming another portion of the first end such that the deformed portion of the first end is contoured complimentary to the second retention surface, wherein said first and second retention surfaces cooperate to define said first retention cavity, and wherein said first portion is movable relative to said second portion along the third direction and said first end is configured to slide in the third direction along said second retention surface; and a second clamp coupled to the other of said steam turbine and said condenser neck and comprising a third portion, a fourth portion coupled to said third portion, and a second retention cavity defined therebetween, wherein said second end of said dog-bone connector is retained in said second retention cavity.",
    "8. The steam turbine system according to claim 7, wherein said first portion comprises a first through-hole extending therethrough in the second direction and elongated in the third direction, and said first clamp further comprises a first fastener received through said first through-hole such that said first clamp and said one of said steam turbine and said condenser neck are coupled together.",
    "9. The steam turbine system according to claim 7, wherein said second end is symmetrical, said third portion comprises a third retention surface contoured complementary to a portion of said dog-bone connector second end, and said fourth portion comprises a fourth retention surface contoured complementary to another portion of said dog-bone connector second end, and wherein said third and fourth retention surfaces cooperate to define said second retention cavity.",
    "10. The steam turbine system according to claim 7, wherein said first portion comprises a fixation shoulder extending from said first portion towards second portion, said fixation shoulder configured to interface with said first end of said dog-bone connector such that movement of said dog-bone connector relative to said first clamp is inhibited.",
    "11. The steam turbine system according to claim 7 further comprising: a first spacer positioned between said first portion and said second portion, wherein said first spacer is configured to facilitate maintaining a first gap between said first portion and said second portion, and wherein said first spacer is configured to facilitate maintaining a parallel relationship between said first portion and said second portion; and a second spacer positioned between said third portion and said fourth portion, wherein said second spacer is configured to facilitate maintaining a second gap between said third portion and said fourth portion, and wherein said second spacer is configured to facilitate maintaining a parallel relationship between said third portion and said fourth portion.",
    "12. The steam turbine system according to claim 7 further comprising a shield fixedly coupled to one of said first and second clamps and extending along the third direction between said first and second clamps, said shield coupled to the other of said first and second clamps for movement in the third direction with respect to said other of said first and second clamps.",
    "13. A method of coupling a steam turbine to a condenser using a connection system, the connection system defining a first direction, a second direction, and a third direction, the three directions orthogonal to each other the said method comprising: coupling a first clamp to one of the steam turbine and the condenser, wherein the first clamp includes a first portion, a second portion coupled to the first portion, and a first retention cavity defined therebetween, and wherein the first portion is movable relative to the second portion along the third direction; coupling a second clamp to the other of the steam turbine and the condenser, wherein the second clamp includes a third portion, a fourth portion coupled to the third portion, and a second retention cavity defined therebetween; retaining a second end of a resiliently deformable dog-bone connector within the second retention cavity, wherein the dog-bone connector further includes a curvilinear symmetrical first end opposite the second end with respect to the third direction, and a body extending therebetween; and retaining the first end of the dog-bone connector in the first retention cavity; wherein said first portion comprises a first curvilinear retention surface contoured complementary to a portion of said dog-bone connector first end and said second portion comprises a flat second retention surface which facilitates deforming another portion of the first end such that the deformed portion of the first end is contoured complementary to the second retention surface, wherein said first and second retention surfaces cooperate to define said first retention cavity and said first end is configured to slide in the third direction along said second retention surface.",
    "14. The method according to claim 13, wherein coupling the first clamp to the one of the steam turbine and the condenser comprises installing a first fastener, wherein the first fastener is received through a first through-hole, the first through-hole extending through the first portion in the second direction and elongated in the third direction.",
    "15. The method according to claim 13 further comprising: positioning a first spacer between the first portion and the second portion, wherein the first spacer is configured to facilitate maintaining a first gap between said first portion and the second portion, and wherein the first spacer is configured to facilitate maintaining a parallel relationship between the first portion and the second portion; and positioning a second spacer between the third portion and the fourth portion, wherein the second spacer is configured to facilitate maintaining a second gap between the third portion and the fourth portion, and wherein the second spacer is configured to facilitate maintaining a parallel relationship between the third portion and the fourth portion.",
    "16. The method of claim 13 further comprising: fixedly coupling a shield to one of the first and second clamps such that the shield extends along the third direction between the first and second clamps; and coupling the shield to the other of the first and second clamps for movement in the third direction with respect to the other of the first and second clamps."
  ],
  "description_excerpt": "The field of the disclosure relates generally to connection systems for steam turbine systems, and more particularly to systems for connecting a steam turbine to a condenser.\n\nAt least some known steam turbine systems include a condenser coupled in downstream flow communication with a steam turbine. For example, at least some known steam turbine systems include a steam turbine that is assembled on a steam turbine table and coupled to a condenser positioned below the table. In at least some cases, a final step in coupling the condenser to the steam turbine includes welding a neck of the condenser to an outer casing of the turbine. However, tolerance stack-up and/or weld shrinkage may cause vertical misalignment of the condenser and turbine casing. In some cases, the condenser, which may have considerable bulk, must be jacked up and levelled to enable the final welding of the joint.\n\nMoreover, the final welding of the joint typically must be performed from inside the joint. Additional work on the steam turbine installation that depends upon the final levelling of the condenser, such as pouring of additional elements of the foundation under the steam turbine table, must be delayed to enable connection of the condenser in the adjusted vertical alignment beneath the turbine. For example, it may require several weeks for elements of the foundation, poured after the coupling of the condenser, to become capable of receiving loading.\n\nIn one aspect, a connection system for coupling a steam turbine to a condenser is provided.",
  "cpc": [
    "F01K 11/02",
    "F01K 9/003",
    "F16B 2/065",
    "F16B 2/10",
    "F16B 3/00",
    "F16B 5/0052",
    "F16B 5/065",
    "F16B 5/0692",
    "F28B 3/04",
    "F28B 9/00",
    "F28F 2275/14",
    "F28F 2275/20",
    "F28F 9/0246",
    "F28F 9/26"
  ],
  "ipc": [
    "F01K 11/02",
    "F01K 9/00",
    "F16B 2/06",
    "F16B 5/06",
    "F28B 3/04"
  ],
  "assignees": [
    "General Electric Technology GmbH"
  ],
  "inventors": [
    "Alessandro SGAMBATI",
    "Thomas Griesser"
  ],
  "filing_date": "2018-03-15",
  "publication_date": "2020-02-25",
  "grant_date": "2020-02-25",
  "priority_date": "2018-03-15",
  "application_number": "US-201815922464-A",
  "family_id": "67774801",
  "cited_by_count": 0,
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    "US20050198939A1",
    "US20080229682A1",
    "US20100050638A1",
    "WO2009082372A1",
    "US8286430B2",
    "US8850816B2",
    "US9206708B2",
    "US20150001814A1",
    "US20140373533A1"
  ]
}