Direct conductor seal for submersible pump electrical connector
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H01R-013/52
E21B-047/12
E21B-017/02
출원번호
US-0727319
(2017-10-06)
등록번호
US-10050375
(2018-08-14)
발명자
/ 주소
Semple, Ryan
Tanner, David
출원인 / 주소
Baker Hughes, a GE Company, LLC
대리인 / 주소
Bracewell LLP
인용정보
피인용 횟수 :
0인용 특허 :
13
초록▼
An electrical connector for downhole well equipment has a housing having a cavity. A rigid rearward insulator is sealed within the cavity, the rearward insulator having a rearward insulator passage. An electrical conductor has an insulation layer and extends in a forward direction into the rearward
An electrical connector for downhole well equipment has a housing having a cavity. A rigid rearward insulator is sealed within the cavity, the rearward insulator having a rearward insulator passage. An electrical conductor has an insulation layer and extends in a forward direction into the rearward insulator passage. An electrical connector terminal joins to a tip of the conductor. The insulation layer has a forward end spaced rearward from the connector terminal, defining an exposed portion of the conductor between the forward end of the insulation layer and the connector terminal. A grommet of resilient electrical insulation material within the rearward insulator passage has a grommet passage with a forward passage portion extending around the connector terminal and an intermediate passage portion sealing around the exposed portion. The grommet has an outer surface in sealing engagement with the rearward insulator passage.
대표청구항▼
1. An electrical connector for downhole well equipment, comprising: a housing having a cavity;a rigid rearward insulator sealed within the cavity, the rearward insulator having a rearward insulator passage;an electrical conductor having an insulation layer and extending in a forward direction into t
1. An electrical connector for downhole well equipment, comprising: a housing having a cavity;a rigid rearward insulator sealed within the cavity, the rearward insulator having a rearward insulator passage;an electrical conductor having an insulation layer and extending in a forward direction into the rearward insulator passage;an electrical connector terminal joined to a tip of the conductor, the insulation layer having a forward end spaced a selected distance rearward from the connector terminal, defining an exposed portion of the conductor between the forward end of the insulation layer and the connector terminal; anda grommet of resilient electrical insulation material within the rearward insulator passage, the grommet having a grommet passage with a forward passage portion extending around the connector terminal, an intermediate passage portion sealing around the exposed portion of the conductor, and an outer surface in sealing engagement with the rearward insulator passage. 2. The connector according to claim 1, wherein: the forward passage portion has a larger diameter than the intermediate passage portion. 3. The connector according to claim 1, wherein: the grommet passage has a rearward passage portion that surrounds the insulation layer. 4. The connector according to claim 1, wherein: the grommet passage has a rearward passage portion joining and extending rearward from the intermediate passage portion, the rearward passage portion having a larger diameter than the intermediate passage portion, defining a rearward facing shoulder in the grommet passage at a junction between the rearward passage portion and the intermediate passage portion; anda gap exists between the forward end of the insulation layer and the rearward facing shoulder in the grommet passage. 5. The connector according to claim 1, wherein: the forward passage portion of the grommet passage has a larger diameter than the intermediate passage portion, defining a forward facing shoulder in the grommet passage at a junction between the forward passage portion and the intermediate passage portion; anda gap exists between the forward facing shoulder in the grommet passage and the rearward end of the connector terminal. 6. The connector according to claim 1, wherein: the grommet passage has a rearward passage portion joining and extending rearward from the intermediate passage portion, the rearward passage portion having a larger diameter than the intermediate passage portion and surrounding the insulation layer; andthe forward passage portion has a larger diameter than the intermediate portion. 7. The connector according to claim 1, wherein: the rearward insulator passage has a counterbore on a forward end that surrounds but is not in sealing contact with the outer surface of the grommet. 8. The connector according to claim 1, further comprising: a forward insulator of a rigid electrical insulating material in the cavity, the forward insulator having a forward insulator passage that registers with the rearward insulator passage, the forward insulator having a rearward end adjacent a forward end of the rearward insulator; andan outer insulator sleeve of electrical insulating material surrounding an interface between the rearward end of the forward insulator and the forward end of the rearward insulator. 9. The connector according to claim 1, further comprising: a housing passage of smaller diameter than the cavity and extending rearward from the cavity; whereinthe grommet has an external rearward facing surface;the grommet has a rearward portion extending rearward from the rearward facing surface into but not sealing to the housing passage, the rearward portion of the grommet surrounding the insulation layer of the conductor; andan inner insulation sleeve extends around the rearward portion of the grommet and the insulation layer. 10. The connector according to claim 1, further comprising: a housing passage of smaller diameter than the cavity and extending rearward from the cavity;an external rearward facing surface on the grommet that abuts part of the rearward insulator;a rearward portion of the grommet extending rearward from the rearward facing surface into the housing passage, the rearward portion of the grommet surrounding the insulation layer of the conductor; anda rigid barrier sleeve within the housing passage rearward from the rearward portion of the grommet, the barrier sleeve having an outer surface that seals to the housing passage and a barrier sleeve passage through which the conductor extends. 11. An electrical connector for downhole well equipment, comprising: a housing having a housing passage extending forward into a cavity;a rigid rearward insulator sealed within the cavity, the rearward insulator having a rearward insulator passage that registers with the housing passage;an electrical conductor having an insulation layer and extending through the housing passage into the rearward insulator passage;an electrical connector terminal joined to a tip of the conductor, the insulation layer having a forward end spaced a selected distance rearward from the connector terminal, defining an exposed portion of the conductor between the forward end of the insulation layer and the electrical connector terminal;a grommet of resilient elastomeric material within the rearward insulator passage, the grommet having an outer surface portion in sealing engagement with the rearward insulator passage, the grommet having a rearward portion within the rearward insulator passage and the housing passage; andthe grommet having a grommet passage that registers with the rearward insulator passage, the grommet passage having a forward passage portion extending around the connector terminal, an intermediate passage portion sealing around the exposed portion of the conductor, and a rearward passage portion in the rearward portion of the grommet that surrounds the insulation layer. 12. The connector according to claim 11, wherein: the rearward passage portion of the grommet has a larger diameter than the intermediate passage portion, defining a rearward facing shoulder at a junction between the rearward passage portion and the intermediate passage portion that is spaced from the forward end of the insulation layer by a gap. 13. The connector according to claim 11, wherein: the forward passage portion of the grommet has a larger diameter than the intermediate passage portion, defining a forward facing shoulder at a junction between the forward passage portion and the intermediate passage portion that is spaced from a rearward end of the connector terminal by a gap. 14. The connector according to claim 11, further comprising: an inner insulation sleeve surrounding the rearward portion of the grommet and the insulation layer. 15. The connector according to claim 11, further comprising: a rigid barrier sleeve within the housing passage rearward from the rearward portion of the grommet, the barrier sleeve having an outer surface that seals to the housing passage and a barrier sleeve passage through which the conductor extends. 16. An electrical connector for downhole well equipment, comprising: a housing having a housing passage extending forward into a cavity, the cavity being of larger diameter than the housing passage;a rigid rearward insulator sealed within the cavity, the rearward insulator having a rearward insulator passage, the rearward insulator passage having a forward portion of larger diameter than a rearward portion, defining a forward facing shoulder in the rearward insulator passage;an electrical conductor having an insulation layer and extending through the housing passage into the rearward insulator passage;an electrical connector terminal joined to a tip of the conductor, the insulation layer having a forward end spaced a selected distance rearward from the connector terminal, defining an exposed portion of the conductor between the forward end of the insulation layer and the electrical connector terminal;a grommet of resilient electrical insulation material within the rearward insulator passage, the grommet having a forward facing surface, a rearward facing surface adjacent the forward facing shoulder in the rearward insulator passage, and a rearward portion within the rearward insulator passage;the grommet having a grommet passage having a forward passage portion extending around a rearward portion of the connector terminal, an intermediate passage portion sealing around the exposed portion of the conductor, and a rearward passage portion in the rearward portion of the grommet that surrounds the insulation layer;a forward insulator of a rigid electrical insulating material in the cavity forward of the rearward insulator, the forward insulator having a forward insulator passage that receives a forward portion of the connector terminal; and whereinthe intermediate passage portion has a length less than a distance from a rearward end of the connector terminal to the forward end of the insulation layer. 17. The connector according to claim 16, further comprising: a rigid barrier sleeve within the housing passage rearward from the rearward portion of the grommet, the barrier sleeve having an outer surface that seals to the housing passage and a barrier sleeve passage through which the insulation layer of the conductor extends. 18. The connector according to claim 16, further comprising: an inner insulation sleeve surrounding the rearward portion of the grommet and the insulation layer;a rigid barrier sleeve within the housing passage rearward from the rearward portion of the grommet, the barrier sleeve having an outer surface that seals to the housing passage and a barrier sleeve passage through which the insulation of the conductor extends; andthe barrier sleeve passage having a forward portion larger in diameter than a rearward portion of the barrier sleeve and into which the inner insulation sleeve extends. 19. The connector according to claim 16, further comprising: an outer insulator sleeve of electrical insulating material surrounding an interface between a rearward end of the forward insulator and a forward end of the rearward insulator. 20. The connector according to claim 16, wherein: the intermediate portion of the grommet passage has a smaller diameter than the forward portion and the rearward portion of the grommet passage;a rearward gap exists between a rearward end of the intermediate portion and the forward end of insulation sleeve;an intermediate gap exists between a forward end of the intermediate portion and a rearward end of the connector terminal; anda forward gas exists between a forward end of the grommet and a rearward end of the forward insulator.
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