CN101938174A - Insulating joint of inner cooled hollow lead wire - Google Patents
Insulating joint of inner cooled hollow lead wire Download PDFInfo
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- CN101938174A CN101938174A CN 201010239987 CN201010239987A CN101938174A CN 101938174 A CN101938174 A CN 101938174A CN 201010239987 CN201010239987 CN 201010239987 CN 201010239987 A CN201010239987 A CN 201010239987A CN 101938174 A CN101938174 A CN 101938174A
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- joint
- hollow lead
- ceramic insulator
- copper sleeve
- copper
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Abstract
The invention relates to an insulating joint of an inner cooled hollow lead wire. The insulating joint is used for the insulation connection between a hollow lead wire and a cooling system and is provided with a stainless steel joint, a ceramic insulator and a copper joint, wherein a through hole communicated with a pipeline of the cooling system is reserved in the stainless steel joint; the two ends of the ceramic insulator are respectively connected with the stainless steel joint and the cupper joint; an axial through hole communicated with the through hole of the stainless steel joint is reserved in the ceramic insulator; the end of the copper joint is provided with one or more than two oval foramens, into which the hollow lead wire is inserted radially; an axial blind hole communicated with the inner core of the hollow lead wire is arranged in the copper joint; one end of the axial blind hole is communicated with the through hole of the ceramic insulator; and the conductor of the hollow lead wire is electrically connected with the copper joint. By using the insulating joint, the electric connection between lead wires of a motor winding is stable and reliable; a cooling medium is not easy to leak; and simultaneously, the stable operation of a motor cooling system can be ensured.
Description
Technical field
The present invention relates to a kind of insulating joint of inner-cooled hollow lead, in particular for the insulating joint that connects between the winding of inner-cooled wind-driven generator and the cooling system.
Background technology
Adopt the generator of the inner-cooled type of cooling, its stator winding adopts the hollow lead, not only switches on but also lead to coolant in lead, and this just requires being connected of winding and cooling system that reliable insulation must be arranged, and the leakage of coolant can't take place.
At present, both at home and abroad the inner-cooled motor the coolant of normal employing water and oil are arranged, but no matter adopt which kind of medium, the inner-cooled stator coil all will use insulating joint.Existing joint mainly is divided into three types, and a kind of is at end nose water power separately, is electrically connected a dependence and a copper bar and realizes.Second kind is at nose all hollow leads of single line rod to be turned to extract out, puts water swivel after the soldering and sealing, and solid copper wire is by the root butt joint.The third is water swivel directly to be overlapped on the online excellent termination once welding.As shown in Figure 1, water swivel is exactly the big flood box of a forging, is respectively equipped with water swivel and Electricity Federation contact pin above.But these connecting mode majorities only are applicable to large-scale water-cooled generator.
Domestic application for a patent for invention ZL94115324.X " a kind of machinery and electrical connection arrangement that is used to carry and discharge the conductor element of cooling fluid " discloses a kind of jockey of inner-cooled coil, be fixed on together on the metalwork at this device hollow core conductor and solid conductor, this metalwork is connected with a hydroecium, the connector that is used to carry and discharge cooling fluid is housed on this hydroecium successively, and metalwork, hydroecium and connector are then contained by an insulating case, wherein, this insulating case is made up of the insulating part of single part or a plurality of parts, this insulating part comes down to be pushed into metalwork with its inboard, on hydroecium and the connector, and go up diametrically and axially they covered, and wherein be provided be used to be filled near the metalwork place and between near the metalwork at connector place and insulating part the filling piece in space between space or connector and the insulating part.This installs convenient disassembly, but structure is comparatively complicated.
Summary of the invention
The technical problem to be solved in the present invention is: overcome the deficiencies in the prior art, a kind of insulating joint of inner-cooled hollow lead is provided, make being connected of the winding of inner-cooled generator and cooling system simple and reliable, not only be electrically connected reliable and stable between the lead of motor windings, and coolant is difficult for leaking, and the while can guarantee the stable operation of motor cooling system.
The technical solution adopted for the present invention to solve the technical problems is: a kind of insulating joint of inner-cooled hollow lead, being used for the hollow lead is connected with the insulation of cooling system, described insulating joint has stainless joint, ceramic insulator and copper sleeve, described stainless joint inside has the through hole that is communicated with the pipeline of cooling system, fixedly connected with copper sleeve with stainless joint respectively in the ceramic insulator two ends, ceramic insulator inside is provided with the axially extending bore that is communicated with the through hole of stainless joint, described copper sleeve end has one or more and is used for the oval foramen that the hollow lead radially inserts, described copper sleeve inside is provided with the axial blind hole that is communicated with hollow lead inner core, axial blind hole one end is communicated with the axially extending bore of ceramic insulator, and the conductor of described hollow lead is electrically connected with copper sleeve.
Further, described copper sleeve is made by fine copper or copper alloy, and described ceramic insulator is made by ceramic material.
The mode that the conductor of described hollow lead is electrically connected with copper sleeve is: the conductor and the copper sleeve of described hollow lead are welded to connect.Because good fine copper or the copper alloy of the preferred electric conductivity of copper sleeve, and be welded to connect solid and reliablely, therefore guaranteed that the electrical connection between the hollow lead is reliable and stable.
Further, described ceramic insulation sub-surface symmetry has the groove that a side does not connect more than two, the opening direction of corresponding two grooves is opposite, place trip bolt in the groove, ceramic insulator is fixedlyed connected with the copper sleeve ring flange of copper sleeve by the trip bolt in the groove, and ceramic insulator is fixedlyed connected with the stainless joint ring flange of stainless joint by the trip bolt in the corresponding recesses.
Further, described ceramic insulator is external diameter and the corresponding cylinder of copper sleeve ring flange, and described trip bolt is a soket head cap screw, and described groove has the cavity that can hold the screwing tool that is used to screw soket head cap screw.Adopt ceramic insulator that copper sleeve and stainless joint are isolated, well realized insulation, adopt the soket head cap screw connection simultaneously, not only connect fasteningly, and dismantle easy to maintenance.
Further, the axially extending bore both sides of described ceramic insulator are provided with sealed step, place metallic packing ring in the sealed step, and the height of metallic packing ring is higher than the degree of depth of sealed step under the nature.
Further, described metallic packing ring adopts the alloy material with plastic property to make.Metallic packing ring can bear bigger pressure, also is difficult for impairedly or aging under higher temperature conditions, has guaranteed the sealing property of insulating joint.
Be connected with cooling system when described stainless joint uses, be connected reliably with the pipeline of cooling system by the mode of welding or be threaded.
The invention has the beneficial effects as follows: stainless joint of the present invention is connected with cooling system, the through hole of stainless joint inside is communicated with cooling pipe, the axial blind hole of copper sleeve is the runner of coolant, the through hole of coolant through the axially extending bore of the axial blind hole of copper sleeve, ceramic insulator, stainless joint inside flows out or enters hollow lead inner core, the heat that produces in the winding work with hollow lead composition is taken out of, realizes the cooling of winding.The present invention is simple in structure, technology is convenient to operation, pressure, the reliability that owing to adopted metallic packing ring, make that the insulating joint sealing property is reliable, long service life, inside can be born higher coolant are better.The present invention makes being connected of the winding of inner-cooled generator and cooling system simple and reliable, not only is electrically connected reliable and stablely between the lead of motor windings, and coolant is difficult for leaking, and the while can guarantee the stable operation of motor cooling system.
Description of drawings
The present invention is further described below in conjunction with accompanying drawing.
Fig. 1 is the prior art constructions schematic diagram;
Fig. 2 is a structural representation of the present invention;
Fig. 3 is the cross-sectional schematic of Fig. 2;
Fig. 4 is the enlarged diagram at A place among Fig. 3;
Wherein: 1. stainless joint, 1-1. stainless joint ring flange, 2. metallic packing ring, 3. ceramic insulator, 3-2. sealed step, 3-3. axially extending bore, 4. soket head cap screw, 5. hollow lead, 6. copper sleeve, 6-1. oval foramen, 6-2. axial blind hole, 6-3. copper sleeve ring flange.
Embodiment
Insulating joint as Fig. 2 Fig. 3 a kind of inner-cooled hollow lead shown in Figure 4, the hollow lead 5 that is used for winding is connected with the insulation of cooling system, insulating joint has stainless joint 1, ceramic insulator 3 and copper sleeve 6, stainless joint 1 inside has the through hole that is communicated with the pipeline of cooling system, ceramic insulator 3 inside are provided with the axially extending bore 3-3 that is communicated with the through hole of stainless joint 1, copper sleeve 6 ends have two and are used for the oval foramen 6-1 that hollow lead 5 radially inserts, copper sleeve 6 inside are provided with the axial blind hole 6-2 that is communicated with hollow lead 5 inner cores, and axial blind hole 6-2 one end is communicated with the axially extending bore 3-3 of ceramic insulator 3.The conductor of hollow lead 5 and copper sleeve 6 are welded to connect, and have guaranteed that the electrical connection between the hollow lead 5 is reliable and stable.Copper sleeve 6 is made by electric conductivity good fine copper or copper alloy, and ceramic insulator 3 is made by the good ceramic material of insulation property.
The axially extending bore 3-3 both sides of ceramic insulator 3 are provided with sealed step 3-2, place metallic packing ring 2 in the sealed step 3-2, and the height of metallic packing ring 2 is higher than the degree of depth of sealed step 3-2 under the nature.Metallic packing ring 2 adopts the good alloy material of plastic property to make.Metallic packing ring 2 can bear bigger pressure, also is difficult for impairedly or aging under higher temperature conditions, has guaranteed the sealing property of insulating joint.
Be connected with cooling system when stainless joint 1 uses, be connected reliably with the pipeline of cooling system by the mode of welding or be threaded.
The concrete connection when using, stainless joint 1 is connected with cooling system, the through hole of stainless joint 1 inside is communicated with cooling pipe, the axial blind hole 6-2 of copper sleeve 6 is the runner of coolant, the through hole of coolant through the axially extending bore 3-3 of the axial blind hole 6-2 of copper sleeve 6, ceramic insulator 3, stainless joint 1 inside flows out or enters hollow lead 5 inner cores, the heat that produces in the winding work with hollow lead 5 compositions is taken out of, realizes the cooling of winding.
The present invention is simple in structure, technology is convenient to operation, make being connected of the winding of inner-cooled generator and cooling system simple and reliable, not only be electrically connected reliable and stablely between the lead of motor windings, and coolant is difficult for leaking, and the while can guarantee the stable operation of motor cooling system.
Claims (7)
1. the insulating joint of an inner-cooled hollow lead, being used for hollow lead (5) is connected with the insulation of cooling system, it is characterized in that: described insulating joint has stainless joint (1), ceramic insulator (3) and copper sleeve (6), described stainless joint (1) inside has the through hole that is communicated with the pipeline of cooling system, fixedly connected with copper sleeve (6) with stainless joint (1) respectively in ceramic insulator (3) two ends, ceramic insulator (3) inside is provided with the axially extending bore (3-3) that is communicated with the through hole of stainless joint (1), described copper sleeve (6) end has one or more and is used for the oval foramen (6-1) that hollow lead (5) radially inserts, described copper sleeve (6) inside is provided with the axial blind hole (6-2) that is communicated with hollow lead (5) inner core, axial blind hole (6-2) end is communicated with the axially extending bore (3-3) of ceramic insulator (3), and the conductor of described hollow lead (5) is electrically connected with copper sleeve (6).
2. the insulating joint of a kind of inner-cooled hollow lead according to claim 1 is characterized in that: described copper sleeve (6) is made by fine copper or copper alloy, and described ceramic insulator (3) is made by ceramic material.
3. the insulating joint of a kind of inner-cooled hollow lead according to claim 1 is characterized in that: the conductor of described hollow lead (5) with the mode that copper sleeve (6) is electrically connected is: the conductor of described hollow lead (5) and copper sleeve (6) are welded to connect.
4. the insulating joint of a kind of inner-cooled hollow lead according to claim 1, it is characterized in that: the surperficial symmetry of described ceramic insulator (3) has the groove that a side does not connect more than two, the opening direction of corresponding two grooves is opposite, place trip bolt in the groove, ceramic insulator (3) is fixedlyed connected with the copper sleeve ring flange (6-3) of copper sleeve (6) by the trip bolt in the groove, and ceramic insulator (3) is fixedlyed connected with the stainless joint ring flange (1-1) of stainless joint (1) by the trip bolt in the corresponding recesses.
5. the insulating joint of a kind of inner-cooled hollow lead according to claim 4, it is characterized in that: described ceramic insulator (3) is external diameter and the corresponding cylinder of copper sleeve ring flange (6-3), described trip bolt is soket head cap screw (4), and described groove has the cavity that can hold the screwing tool that is used to screw soket head cap screw (4).
6. the insulating joint of a kind of inner-cooled hollow lead according to claim 1, it is characterized in that: axially extending bore (3-3) both sides of described ceramic insulator (3) are provided with sealed step (3-2), place metallic packing ring (2) in the sealed step (3-2), the height of metallic packing ring under the nature (2) is higher than the degree of depth of sealed step (3-2).
7. the insulating joint of a kind of inner-cooled hollow lead according to claim 6 is characterized in that: described metallic packing ring (2) adopts the alloy material with plastic property to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010239987 CN101938174B (en) | 2010-07-28 | 2010-07-28 | Insulating joint of inner cooled hollow lead wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010239987 CN101938174B (en) | 2010-07-28 | 2010-07-28 | Insulating joint of inner cooled hollow lead wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101938174A true CN101938174A (en) | 2011-01-05 |
| CN101938174B CN101938174B (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010239987 Active CN101938174B (en) | 2010-07-28 | 2010-07-28 | Insulating joint of inner cooled hollow lead wire |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5261701A (en) * | 1975-11-15 | 1977-05-21 | Hitachi Ltd | Connector for rotor lead wires |
| CN1108823A (en) * | 1993-09-20 | 1995-09-20 | Abb管理有限公司 | Device for the electrical and mechanical connection of the component conductors for supplying and removing the coolant |
| EP0688090A1 (en) * | 1994-06-13 | 1995-12-20 | ABB VERKEHRSTECHNIK Gesellschaft m.b.h. | Motor cooling system |
| US6084319A (en) * | 1996-10-16 | 2000-07-04 | Canon Kabushiki Kaisha | Linear motor, and stage device and exposure apparatus provided with the same |
| JP2005094902A (en) * | 2003-09-17 | 2005-04-07 | Canon Inc | Shifter |
| CN101183808A (en) * | 2007-11-16 | 2008-05-21 | 中国科学院电工研究所 | Stator structure of inner cooling type self-circulation vaporization cooling wind power generator |
| CN201774334U (en) * | 2010-07-28 | 2011-03-23 | 江苏新誉重工科技有限公司 | Insulating joint of inner cooled hollow wire |
-
2010
- 2010-07-28 CN CN 201010239987 patent/CN101938174B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5261701A (en) * | 1975-11-15 | 1977-05-21 | Hitachi Ltd | Connector for rotor lead wires |
| CN1108823A (en) * | 1993-09-20 | 1995-09-20 | Abb管理有限公司 | Device for the electrical and mechanical connection of the component conductors for supplying and removing the coolant |
| EP0688090A1 (en) * | 1994-06-13 | 1995-12-20 | ABB VERKEHRSTECHNIK Gesellschaft m.b.h. | Motor cooling system |
| US6084319A (en) * | 1996-10-16 | 2000-07-04 | Canon Kabushiki Kaisha | Linear motor, and stage device and exposure apparatus provided with the same |
| JP2005094902A (en) * | 2003-09-17 | 2005-04-07 | Canon Inc | Shifter |
| CN101183808A (en) * | 2007-11-16 | 2008-05-21 | 中国科学院电工研究所 | Stator structure of inner cooling type self-circulation vaporization cooling wind power generator |
| CN201774334U (en) * | 2010-07-28 | 2011-03-23 | 江苏新誉重工科技有限公司 | Insulating joint of inner cooled hollow wire |
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| Publication number | Publication date |
|---|---|
| CN101938174B (en) | 2013-03-27 |
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