CN111934475B - Flattened stator junction box - Google Patents
Flattened stator junction box Download PDFInfo
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- CN111934475B CN111934475B CN202010551258.6A CN202010551258A CN111934475B CN 111934475 B CN111934475 B CN 111934475B CN 202010551258 A CN202010551258 A CN 202010551258A CN 111934475 B CN111934475 B CN 111934475B
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- junction box
- motor
- terminal block
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
- H02K5/225—Terminal boxes or connection arrangements
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- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The invention belongs to the field of wind driven generators, and particularly relates to a flattened stator junction box. The stator junction box comprises a junction box body, an insulating device and a junction device, wherein the insulating device and the junction device are positioned in the junction box body; the lower bottom plate is adhered with a lower bottom plate sealing gasket and fixed with the lower end surface of the junction box shell through bolts, and the junction device comprises a plurality of conductive bar assemblies; the insulating device comprises an insulating plate, and a plurality of lead holes are formed in the insulating plate. The stator junction box can effectively reduce the use space of the motor in the cabin.
Description
Technical Field
The invention belongs to the field of wind driven generators, and particularly relates to a flattened stator junction box.
Background
At present, doubly-fed wind power generators increasingly tend to develop in the direction of single machine high power, and the size of the motors is increased. However, users are pursuing low-cost, high-reliability and compact cabins, so that cabin space in a wind generating set is smaller and smaller, and the method is particularly important for high-power and small-volume design of a motor. The stator junction box is positioned on the side surface of the motor, and the size of the stator junction box directly influences the installation space of the motor in the engine room, so that the flattened design of the stator junction box of the motor becomes a difficult problem.
The motor manufacturers mostly adopt the step arrangement copper bars, because U-phase, V-phase and W-phase copper bars are rectangular structures, the copper bars and the insulating plates can only be arranged front and back, the stator outgoing lines are led out from the insulating plates right opposite to the back of the copper bars and are respectively connected with the upper surface and the lower surface of the copper bars, and the user wiring is that the side edges are perpendicular to the direction of the conductive bars. The stator junction box has the advantages that the internal space of the stator junction box is large, more materials are used, unnecessary waste is caused, the design cost of the motor is increased, the installation position of the motor in the engine room is limited, and the motor is not easy to operate.
Disclosure of Invention
The object of the present invention is to overcome the above-mentioned drawbacks of the prior art and to provide a flattened stator terminal box.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the flat stator junction box comprises a junction box body, an insulation device and a junction device, wherein the insulation device and the junction device are positioned in the junction box body, the junction box body is fixed on a motor side wall, and the insulation device and the junction device are arranged on the outer side of the motor side wall; the wiring device comprises a plurality of conductive bar assemblies.
Further, the number of the conducting bar assemblies is 3, and the conducting bar assemblies are arranged in vertical rows;
the conducting bar assembly comprises a Z-shaped conducting bar, a wiring hole, a long wiring post and a short wiring post, wherein the conducting bar comprises a first surface and a second surface, the wiring hole is formed in the first surface, and the long wiring post and the short wiring post are fixed on the second surface through brazing.
Further, the junction box body comprises a junction box shell, a cover plate and a lower bottom plate which are fixedly connected with the side wall of the motor, wherein a cover plate sealing gasket is adhered to the cover plate, and the cover plate is fixed with the upper surface of the junction box shell through bolts; the lower bottom plate is bonded with a lower bottom plate sealing gasket and is fixed with the lower end face of the junction box shell through bolts, and a handle is arranged in the middle of the cover plate.
Further, the insulating device comprises an insulating plate, and a plurality of lead holes are formed in the insulating plate.
Further, the lead hole is fitted with a nylon sheath.
Further, the junction box shell is of a semi-closed structure or a frame structure;
the junction box shell is of a semi-closed structure, a side plate is arranged on one surface of the junction box shell, which contacts with the side wall of the motor, and the insulating device and the junction device are fixed on the inner side of the side plate;
the terminal box casing is the frame structure, and the terminal box casing contacts the one side and the opposite face of motor lateral wall are open structure, insulating device with termination is fixed in the outside of motor lateral wall.
Further, the conducting bars are fixed with insulators through bolt groups, and the insulators are fixed on side plates of the junction box shell or side walls of the motor through studs.
Further, the lower bottom plate is provided with a plurality of assembly holes for connecting waterproof joints, and the waterproof joints are fixed on the assembly holes through self-locking nuts.
Further, the motor also comprises an equipotential grounding block and a grounding post, wherein the grounding post is welded on a side plate or a motor side wall of the junction box shell.
Further, the junction box shell is provided with 3 equipotential grounding blocks which are respectively connected with the equipotential grounding blocks arranged on the cover plate, the equipotential grounding blocks arranged on the lower bottom plate and the equipotential grounding blocks arranged on the side wall of the motor through grounding wires.
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
the invention can provide a design thought for the stator junction box of the doubly-fed wind driven generator of the same type, and particularly provides a novel stator junction box structure aiming at the problems of narrow installation space, difficult wiring of the stator outgoing lines and the like. The motor design cost can be saved by adopting the junction box, the operation of workers is easy, and the use space of the motor in the engine room can be reduced after the stator junction box is subjected to flattening treatment.
Drawings
FIG. 1 is a schematic view of a junction box according to the present invention;
FIG. 2 is a front view of the junction box of the present invention;
FIG. 3 is a side cross-sectional view of the junction box of the present invention;
FIG. 4 is a bottom view of the junction box of the present invention;
FIG. 5 is a schematic view of a conductive bar assembly according to the present invention;
FIG. 6 is a top view of the conductor bar assembly of the present invention;
FIG. 7 is a schematic diagram of a busbar assembly layout of the present invention;
FIG. 8 is a schematic diagram of example 1 of the present invention;
fig. 9 is a schematic diagram of embodiment 2 of the present invention.
Wherein: 1 is a junction box body; 2 is an insulating device; 3 is a wiring device; 4 is the side wall of the motor; 5 is an equipotential grounding block; 6 is a grounding column; 11 is a junction box housing; 12 is a cover plate; 13 is a lower bottom plate; 14 is a lower plate gasket; 15 is a cover plate sealing gasket; 21 is an insulating plate; 22 is a nylon sheath; 31 is a conductive bar assembly; 51 is a ground wire; 131 is an assembly hole; 132 waterproof joints; 211 is a lead hole; 311 is a conductive bar; 312 is a wiring hole; 313 is a long post; 314 is a short post; 315 is a first surface; 316 is a second surface; 317 is an insulator.
Detailed Description
The invention is described in further detail below with reference to the attached drawing figures:
example 1
Referring to fig. 1-8, a flattened stator terminal block includes a terminal block body 1 and insulation means 2 and wiring means 3 located within the terminal block body 1, the wiring means 3 including 3 sets of conductor bar assemblies 31; the insulating device 2 includes an insulating plate 21, and the insulating plate 21 is provided with 28 lead holes 211.
The junction box body 1 comprises a junction box shell 11 fixedly connected with the side wall 4 of the motor, a cover plate 12 and a lower bottom plate 13, wherein the junction box shell 11 is of a closed structure in the embodiment, the back of the junction box shell 11 is provided with a side plate, opposite surfaces of the side plate are hollow, the insulating device 2 and the junction device 3 are fixed on the inner side of the side plate through bolts, and the cover plate 12 is adhered with a cover plate sealing gasket 15 and is fixed with the upper surface of the junction box shell 11 through bolts; the lower bottom plate 13 is adhered with a lower bottom plate sealing gasket 14 and is fixed with the lower end face of the junction box shell 11 through bolts, and two handles are arranged in the middle of the cover plate 12.
Further, the lead holes 211 are sleeved with the nylon sheath 22, and the nylon sheath 22 can play an insulating protection and dustproof role on the stator outgoing line.
Further, the conductive bar assemblies 31 are a U-phase conductive bar assembly, a V-phase conductive bar assembly, and a W-phase conductive bar assembly, respectively, and the three conductive bar assemblies 31 are arranged in a stepped vertical row.
The conductive bar assembly 31 comprises a Z-shaped conductive bar 311, wiring holes 312, a long wiring post 313 and a short wiring post 314, wherein the conductive bar 311 comprises a first surface 315 and a second surface 316, the wiring holes 312 are arranged on the first surface 315, and the number of the wiring holes 312 is 4; the long post 313 and the short post 314 are fixed to the second surface 316 by brazing, and the number of the long post 313 and the short post 314 is two, respectively, arranged side by side.
Further, the second surface 316 of the conductive bar 311 is provided with 6 threaded holes, and is fixed to the insulator 317 by a bolt set, and the insulator 317 is fixed to the motor sidewall 4 by a stud.
Further, 14 assembly holes 131 for connecting the waterproof joint 132 are formed in the lower base plate 13, and the waterproof joint 132 is fixed to the assembly holes 131 through a self-locking nut.
Further, the junction box device further comprises an equipotential grounding block 5 and a grounding post 6, and the grounding post 6 is welded on a side plate of the junction box shell 11.
Further, the junction box housing 11 is provided with 3 equipotential grounding blocks 5, which are connected with the equipotential grounding blocks 5 provided on the cover plate 12, the equipotential grounding blocks 5 provided on the lower bottom plate 13, and the equipotential grounding blocks 5 provided on the motor side wall 4 through grounding wires.
The installation steps and the using method of the embodiment are as follows:
the installation step comprises the following steps:
s1: the side plate on the junction box shell 11 is fixed with the motor side wall 4 through bolts, the nylon sheath 22 is sleeved on the lead hole 211 on the insulating plate 21, and the insulating plate 21 is fixed on the side plate on the junction box shell 11 through a bolt set;
s2: the long binding post 313 and the short binding post 314 are welded on the conducting bar 311 to form a conducting bar assembly 31, the conducting bar assembly 31 is fixed with an insulator 317 through a bolt group, and the insulator 317 is fixed with a side plate on the wire box shell 11 through a stud;
s3: the cover plate 12 is adhered with a cover plate sealing gasket 14 and is fixed with the upper surface of the junction box shell 11 through bolts; the lower bottom plate 13 is adhered with a lower bottom plate sealing gasket 14 and is fixed with the lower end surface of the junction box shell 11 through bolts, and the waterproof joint 132 is fixed with an assembly hole 131 on the lower bottom plate 13 through a self locking nut;
s4: the grounding post 6 is welded in the position shown in fig. 1, the junction box housing 11 is welded with 3 equipotential grounding blocks 5, and the cover plate 12, the lower bottom plate 13 and the motor side wall 4 are respectively welded with one equipotential grounding block 5.
The using method comprises the following steps:
s1: the stator lead wires are led out from the inside of the motor and pass through the nylon sheath 22 and the lead holes 211 on the insulating plate 21;
s2: the stator lead wires passing through the lead holes 211 of the insulating plate 21 are connected with the wiring holes 312 of the conductive bar assembly 31;
s3: the user cable passes through the waterproof connector 132, and the wiring terminals are connected with the long wiring post 313 and the short wiring post 314 of the conducting bar assembly 31;
s4: the user grounding cable is connected with the grounding post 6;
s5: the 3 equipotential grounding blocks 5 arranged on the junction box shell 11 are respectively connected with the equipotential grounding blocks 5 arranged on the cover plate 12, the equipotential grounding blocks 5 arranged on the lower bottom plate 13 and the equipotential grounding blocks 5 arranged on the motor side wall 4 through the grounding wires 51.
Example 2
On the basis of embodiment 1, the junction box housing 11 has a frame structure, one surface of the junction box housing 11 contacting the motor side wall 4 and the opposite surface are both in an open structure, and the insulating device 2 and the junction device 3 are fixed on the outer side of the motor side wall 4, and the inner side of the junction box housing 11.
The installation steps and the application method of the embodiment are as follows
The installation step comprises the following steps:
s1: the long binding post 313 and the short binding post 314 are welded on the conducting bar 311 to form a conducting bar assembly 31, and the insulator 317 is fixed with the side wall 4 of the motor through a stud; the conductive bar assembly 31 is fixed with the insulator 317 by a bolt group;
s2: nylon sheath 22 is sleeved on lead hole 211 on insulating plate 21, insulating plate 21 is fixed on motor side wall 4 by bolt group;
s3: the frame of the junction box shell 11 is fixed with the side wall 4 of the motor through bolts; ensuring that the conductor bar assembly 31 and the insulating plate 21 are positioned inside the junction box housing 11;
s4: the cover plate 12 is adhered with a cover plate sealing gasket 14 and is fixed with the upper surface of the junction box shell 11 through bolts; the lower bottom plate 13 is adhered with a lower bottom plate sealing gasket 14 and is fixed with the lower end surface of the junction box shell 11 through bolts, and the waterproof joint 132 is fixed with an assembly hole 131 on the lower bottom plate 13 through a self locking nut;
s5: the grounding column 6 is welded on the side wall of the motor, 3 equipotential grounding blocks 5 are welded on the junction box shell 11, and one equipotential grounding block 5 is welded on the cover plate 12, the lower bottom plate 13 and the side wall 4 of the motor respectively.
The method of use is the same as in example 1.
Claims (9)
1. The flattened stator junction box is characterized by comprising a junction box body (1), and an insulating device (2) and a junction device (3) which are positioned in the junction box body (1), wherein the junction box body (1) is fixed on a motor side wall (4), and the insulating device (2) and the junction device (3) are arranged outside the motor side wall (4); the wiring device (3) comprises 3 conducting bar assemblies (31) which are a U-phase conducting bar assembly, a V-phase conducting bar assembly and a W-phase conducting bar assembly respectively, and the 3 conducting bar assemblies (31) are arranged in a stepped vertical row;
each conducting bar assembly (31) comprises a Z-shaped conducting bar (311), a wiring hole (312), a long wiring post (313) and a short wiring post (314), the conducting bar (311) comprises a first surface (315) and a second surface (316), the wiring hole (312) is arranged on the first surface (315), the long wiring post (313) and the short wiring post (314) are fixed on the second surface (316) through brazing, a user cable is led out through being connected with the long wiring post (313) and/or the short wiring post (314), the cable led out from the inside of the motor is connected with the wiring hole (312) on the first surface (315), and the height of the first surface (315) is higher than the height of the top surface of the long wiring post (313) brazed on the second surface (316).
2. The flattened stator terminal block according to claim 1, wherein the terminal block body (1) comprises a terminal block housing (11) fixedly connected with a motor side wall (4), a cover plate (12) and a lower bottom plate (13), wherein a cover plate sealing gasket (15) is adhered to the cover plate (12) and is fixed with the upper surface of the terminal block housing (11) through bolts; the lower bottom plate (13) is adhered with a lower bottom plate sealing gasket (14) and is fixed with the lower end face of the junction box shell (11) through bolts, and a handle is arranged in the middle of the cover plate (12).
3. A flattened stator terminal block as claimed in claim 1 wherein the insulating means (2) comprises an insulating plate (21), the insulating plate (21) having a plurality of lead holes (211) provided therein.
4. A flattened stator terminal block as recited in claim 3 wherein said lead aperture (211) is fitted with a nylon jacket (22).
5. A flattened stator terminal block according to claim 2, wherein the terminal block housing (11) is of semi-closed or bezel construction;
the junction box shell (11) is of a semi-closed structure, a side plate is arranged on one surface of the junction box shell (11) contacting the side wall (4) of the motor, and the insulating device (2) and the junction device (3) are fixed on the inner side of the side plate;
the terminal box casing (11) is frame structure, and the one side and the opposite face of terminal box casing (11) contact motor lateral wall (4) are open structure, insulating device (2) with termination (3) are fixed in the outside of motor lateral wall (4).
6. A flattened stator terminal as claimed in claim 1 wherein the conductor bars (311) are secured to insulators (317) by bolt sets, the insulators (317) being secured to side plates of the terminal block housing (11) or to the motor side walls (4) by studs.
7. The flattened stator terminal block of claim 5, wherein the lower plate (13) is provided with a plurality of fitting holes (131) for connecting waterproof joints (132), and the waterproof joints (132) are fixed to the fitting holes (131) by self-locking nuts.
8. A flattened stator terminal as claimed in claim 1 further comprising an equipotential grounding block (5) and a grounding post (6), the grounding post (6) being welded to a side plate or motor side wall (4) of the terminal housing (11).
9. The flattened stator terminal block according to claim 8, wherein the terminal block housing (11) is provided with 3 equipotential grounding blocks (5) connected to the equipotential grounding blocks (5) provided on the cover plate (12), the equipotential grounding blocks (5) provided on the lower plate (13), and the equipotential grounding blocks (5) provided on the motor side wall (4) through ground wires (51), respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010551258.6A CN111934475B (en) | 2020-06-17 | 2020-06-17 | Flattened stator junction box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010551258.6A CN111934475B (en) | 2020-06-17 | 2020-06-17 | Flattened stator junction box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111934475A CN111934475A (en) | 2020-11-13 |
| CN111934475B true CN111934475B (en) | 2023-06-06 |
Family
ID=73317581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010551258.6A Active CN111934475B (en) | 2020-06-17 | 2020-06-17 | Flattened stator junction box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111934475B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0193784A2 (en) * | 1985-03-04 | 1986-09-10 | Siemens Aktiengesellschaft | Connecting device for a high-tension machine |
| JPH10201182A (en) * | 1997-01-17 | 1998-07-31 | Fuji Electric Co Ltd | Terminal box of motor fitted with electromagnetic brake |
| CN203151297U (en) * | 2013-03-29 | 2013-08-21 | 上海电气集团上海电机厂有限公司 | Conjunction box of wind driven generator |
| CN110868003A (en) * | 2019-11-29 | 2020-03-06 | 上海电气集团上海电机厂有限公司 | Wire outlet device for DC motor |
-
2020
- 2020-06-17 CN CN202010551258.6A patent/CN111934475B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0193784A2 (en) * | 1985-03-04 | 1986-09-10 | Siemens Aktiengesellschaft | Connecting device for a high-tension machine |
| JPH10201182A (en) * | 1997-01-17 | 1998-07-31 | Fuji Electric Co Ltd | Terminal box of motor fitted with electromagnetic brake |
| CN203151297U (en) * | 2013-03-29 | 2013-08-21 | 上海电气集团上海电机厂有限公司 | Conjunction box of wind driven generator |
| CN110868003A (en) * | 2019-11-29 | 2020-03-06 | 上海电气集团上海电机厂有限公司 | Wire outlet device for DC motor |
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| Publication number | Publication date |
|---|---|
| CN111934475A (en) | 2020-11-13 |
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