CN111478258A - Wind-powered electricity generation bus duct connector - Google Patents
Wind-powered electricity generation bus duct connector Download PDFInfo
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- CN111478258A CN111478258A CN202010208155.XA CN202010208155A CN111478258A CN 111478258 A CN111478258 A CN 111478258A CN 202010208155 A CN202010208155 A CN 202010208155A CN 111478258 A CN111478258 A CN 111478258A
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- insulating
- plate
- conductive
- bus duct
- bar
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G5/00—Installations of bus-bars
- H02G5/06—Totally-enclosed installations, e.g. in metal casings
- H02G5/08—Connection boxes therefor
Abstract
A wind power bus duct connector comprises a wind power bus duct connector installation fixing set consisting of each fixing bolt, an insulating sleeve, a fixing nut and two circular pads, wherein each insulating partition comprises an edge insulating partition and a middle insulating partition. The side surface of the edge insulating plate close to the middle insulating plate and the left and right side surfaces of the middle insulating plate are provided with positioning convex columns, and correspondingly, the conducting bar is provided with positioning holes. And a positioning convex strip is arranged on the other side of the edge insulating plate. And the section plate, the conductive bar and the insulating partition plate are all provided with sleeve through holes. A conducting bar group is arranged between two adjacent insulating partition plates, a conducting strip is clamped between two conducting bars in the conducting bar group, and an intermediate insulating partition plate is arranged between two adjacent conducting bars in the two adjacent conducting bar groups. The fixing bolt firstly passes through the corresponding circular pad and then passes through the insulating sleeve. The insulating sleeve is inserted into the sleeve through hole, and the fixing bolt penetrates through the main body of the section plate on the other side, penetrates through the corresponding circular pad and then is in threaded connection with the fixing nut.
Description
Technical Field
The invention relates to a bus connector, in particular to a wind power bus duct connector.
Background
Bus duct connectors at the joints of vertical sections of bus ducts and vertical sections of bus ducts in the wind power industry are prone to faults caused by over-temperature or large vibration. Especially, the wind turbine generator system is developed to 3MW and above from 750kW in the early stage, the height of the wind turbine generator system is also extended to 90m, even 100m and 120m and above from 60m, and based on the above conditions, the current between a generator and a converter is increasingly large, and the vertical section of a tower of the wind turbine generator system is also greatly shaken, so that the shutdown condition of the wind turbine generator system caused by the fault of a bus duct connector is more serious, and the power generation loss is serious.
Patent documents entitled "bus connector for wind power bus duct reinforcing anti-loose insulation" with application number 201320394031.0, grant publication number CN 203398677U, disclose a bus connector for wind power bus duct: comprises connector side plate assemblies arranged at two sides of a connector body and a plurality of connector middle plate assemblies arranged between the connector side plate assemblies at two sides, the connector is provided with an insulating screw assembly, the anti-loose washer is embedded in the nut corresponding to the insulating screw component, when the insulating screw component is screwed in or out of the nut, the external thread of the insulating screw component and the anti-loose washer generate strong friction force to effectively prevent the screw from loosening, the square nut structure is matched with the clamping groove of the section plate to limit the relative rotation of the insulating screw assembly and the nut, thereby achieving good loosening effect, in addition, a drainage groove is added on the connector side plate, the connector side plate and the connector middle plate are provided with a plurality of groups of groove boss structures and lip structures, thereby enhancing the condensation prevention function, meanwhile, the creepage distance is increased, and an excellent insulation safety system is formed by matching with an insulation screw assembly. The invention aims to provide a bus connector for reinforcing anti-loose insulation of a wind power bus duct, which can be used in environments with high altitude, high temperature, high humidity and high altitude, so that a bus duct system can operate safely and stably. But the problem that the fault is caused by the over-temperature due to the small effective contact resistance when the conventional bus duct connector runs under the conditions of full power generation, high-power running and vibration of a wind turbine generator is not solved. In addition, the structure is complicated, and the processing and manufacturing difficulty is high.
Disclosure of Invention
The invention mainly aims to provide a wind power bus duct connector which is simple in structure and can reduce effective contact resistance.
The technical scheme adopted by the invention is as follows: a wind power bus duct connector comprises a fixing bolt, a section plate, a conductive bar, an insulating sleeve, an insulating partition plate, a fixing nut, a circular pad and a conductive sheet. One side of the section plate main body is provided with a clamping groove, the other side of the section plate main body is provided with an isolation convex strip, and the groove width of the clamping groove is larger than the diameter of the circular pad. Each fixing bolt, one insulating sleeve, one fixing nut and two circular pads form a wind power bus duct connector mounting and fixing set, and two or more wind power bus duct connector mounting and fixing sets are formed in total. The insulating partition plates comprise two edge insulating partition plates and a plurality of middle insulating partition plates. The side surface of the side insulating plate close to the middle insulating plate and the left side surface and the right side surface of the middle insulating plate are provided with positioning convex columns with the same number as the fixing bolts, correspondingly, the conducting bar is provided with positioning holes matched with the positioning convex columns, the height of each positioning convex column is larger than the thickness of the conducting bar, and the sum of the heights of the two positioning convex columns is smaller than the sum of the thicknesses of the two conducting bars and one conducting strip. The other side of the edge insulating plate, which is back to the positioning convex column on the edge insulating plate, is provided with a positioning convex strip. The profile plate, the conductive bar and the insulating partition plate are all provided with bushing holes which are equal to the number of the mounting and fixing groups of the wind-electricity bus duct connectors and are matched with the insulating bushings, and the connecting line of the bushing hole centroids on the profile plate, the conductive bar and the insulating partition plate is collinear with the centroid connecting line of the positioning convex column. Two conductive bars are arranged between two adjacent insulating partition plates, the two conductive bars form a conductive bar group, a conductive sheet is respectively clamped between the upper half part and the lower half part of each of the two conductive bars in the conductive bar group, and an intermediate insulating partition plate is arranged between the two adjacent conductive bars in the two adjacent conductive bar groups. The number of the conductive row groups is more than or equal to two. The clamping grooves of the left and right section plates are positioned on the outer side. The circular pad is arranged in the clamping groove of the section plate, and the fixing bolt firstly penetrates through the corresponding circular pad and then penetrates through the insulating sleeve. The insulating sleeves are sequentially inserted into the profile plate, the conductive bars in each conductive bar group and sleeve through holes matched with the insulating sleeves, which are formed in the insulating partition plates, and the fixing bolts penetrate through the main body of the profile plate on the other side, penetrate through the corresponding circular pads and are in threaded connection with the fixing nuts.
The profile plate is here an electrical conductor. The two conducting strips are used for power transmission from a generator of the wind generating set to the vertical section of the tower frame between the converters. The conducting bar and the conducting sheet have simple integral structure and easy processing and manufacturing, and can effectively reduce the processing and manufacturing cost. Two or more than two wind power bus duct connectors are adopted to install and fix the groups, so that the installation speed, the stability and the reliability of the connectors can be improved.
Preferably, the grounding device further comprises a grounding bar, and the grounding bar is clamped between one of the section plates and the corresponding insulating partition plate, or the grounding bar is clamped between the two section plates and the corresponding insulating partition plate. The optimal scheme is favorable for improving the use safety of the wind power bus duct connector;
further preferably, the ground row sandwiched between the profile plate and the corresponding insulating spacer is composed of two upper and lower tapped ground rows. The preferred scheme is convenient for processing, manufacturing and installing the grounding bar;
still further preferably, the projection of the positioning convex column is located in the projection of the positioning convex strip, and the height of the positioning convex strip is smaller than that of the positioning convex column. This preferred scheme is favorable to improving the convenience and the reliability of the installation of ground bar.
Preferably, the edges of the conductive bars are rounded. According to the preferred scheme, compared with a square chamfer, the contact area between the bus duct vertical section conducting bar and the connector conducting bar can be increased to the maximum extent, and the effective contact resistance between the bus duct vertical section conducting bar and the bus duct connector conducting bar is reduced.
Preferably, the insulating sleeve is a polygonal sleeve, and the corresponding sleeve through hole is also a polygonal hole. This preferred scheme, the installation location of the section bar board of being convenient for, electrically conductive row, insulating barrier.
Preferably, the surfaces of the conductive bar, the conductive sheets or both are plated with silver or coated with a layer of conductive paste, so as to increase the effectiveness and reliability of the contact between the corresponding conductors.
Preferably, the circular pad is a belleville spring pad.
In conclusion, the invention has the advantages of simple structure, easy processing and manufacturing of parts, convenient and fast installation and high use safety.
Drawings
FIG. 1: the invention has a structure schematic diagram;
FIG. 2: the structure of the present invention is illustrated in exploded view.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
As shown in fig. 1 and 2, the invention comprises two fixing bolts 1, two section plates 2, six conductive bars 3, two insulating sleeves 4, four insulating partition plates 5, two fixing nuts 6, four circular pads 7 (a butterfly spring pad), six conductive sheets 8, and two groups of grounding bars 9 consisting of two upper and lower tapping grounding bars 9.1 which are not connected together;
the two profile plates 2 are oppositely arranged left and right, one side (namely the side with a longer distance between the two profile plates 2) of the profile plate 2 main body is provided with a clamping groove 2.1, the other side is provided with an isolation raised line 2.2, and the groove width of the clamping groove 2.1 is larger than the diameter of the circular pad 7;
each fixing bolt 1, an insulating sleeve 4, a fixing nut 6 and two circular pads 7 form a wind power bus duct connector mounting and fixing group, so that two wind power bus duct connector mounting and fixing groups are formed;
the four insulating partition plates 5 comprise two edge insulating partition plates 51 and two middle insulating partition plates 52;
the main body of the section plate 2, the conducting bar 3 and the insulating partition plate 5 are all provided with sleeve through holes which are matched with the insulating sleeves 4 and have the same number as the wind power bus duct connector mounting and fixing groups; the sleeve through holes are symmetrically arranged front and back and are respectively symmetrical about the symmetrical horizontal planes of the main body of the corresponding section plate 2, the conductive bar 3 and the insulating partition plate 5, the centroid connecting line of each front sleeve through hole is collinear with the axis of the fixing bolt 1 of the front wind power bus duct connector mounting and fixing group, and the centroid connecting line of each rear sleeve through hole is collinear with the axis of the fixing bolt 1 of the rear wind power bus duct connector mounting and fixing group;
the side surface of the edge insulating plate 51 close to the middle insulating plate 52 and the left and right side surfaces of the middle insulating plate are provided with positioning convex columns 5.1 with the same number as the fixing bolts 1, correspondingly, the conducting bar 3 is provided with positioning holes matched with the positioning convex columns 5.1, the height of the positioning convex columns 5.1 is larger than the thickness of the conducting bar 3, the height of the two positioning convex columns 5.1 is smaller than the sum of the thicknesses of the two conducting bars 3 and one conducting strip 8, and thus, the clamping of the two conducting bars 5 to the corresponding conducting strips 8 is facilitated. The other side of the edge insulating plate 51, which is opposite to the positioning convex column 5.1 on the edge insulating plate, is provided with a positioning convex strip 5.2, and the height of the positioning convex strip 5.2 is smaller than that of the positioning convex column 5.1. The distance between the upper and lower sides of the positioning convex column 5.1 is greater than the diameter of the through hole of the sleeve, the distance between the upper and lower sides of the isolation convex strip 2.2 is greater than the distance between the upper and lower sides of the positioning convex column 5.1, and the distance between the upper and lower sides of the positioning convex strip 5.2 is greater than the distance between the upper and lower sides of the isolation convex strip 2.2, so that the projection area of the positioning convex strip 5.2 is greater than the projection area of the positioning convex column 5.1.
The height of the separating ribs 2.2 is less than the thickness of the grounding row 9 (i.e. less than the sub-grounding rows 9.1) in order to facilitate the clamping of the respective sub-grounding row 9.1 by the edge insulating plate 51 and the respective profile plate 2. The distance between the upper side surface of the upper conducting strip 8 and the lower side surface of the lower conducting strip 8 is greater than the distances between the upper end and the lower end of the main body of the edge insulating plate 51, the middle insulating plate 52 and the profile plate 2, so that the conducting strips 8 can be connected with corresponding members; similarly, the distance between the upper end of the upper ground bar 9.1 and the lower end of the lower ground bar 9.1 is greater than the distance between the upper and lower ends of the side insulating plates 51, the middle insulating plate 52 and the main body of the profile plate 2, so as to facilitate the ground connection of the ground bar 9.1. Two conductive bars 3 are arranged between two adjacent insulating partition plates 5, the two conductive bars 3 form a conductive bar group, a conductive sheet 8 is respectively clamped between the upper half part and the lower half part of each of the two conductive bars 3 in the conductive bar group, and an intermediate insulating partition plate 52 is arranged between the two adjacent conductive bars 3 in the two adjacent conductive bar groups; the number of the conductive row groups is three. The clamping grooves 2 and 1 of the left and right section plates 2 are positioned at the outer sides; the round pads 7 are arranged in the clamping grooves 2.1 of the section plates 2, and the fixing bolts 1 firstly penetrate through the corresponding round pads 7 and then penetrate through the insulating sleeves 4; the insulating sleeves 4 are sequentially inserted into the main body of the section plate 2, the conductive bars 3 in each conductive bar group and sleeve through holes matched with the insulating sleeves 4, which are formed in the insulating partition plates 5, and the fixing bolt 1 penetrates through the main body of the section plate 2 on the other side, then penetrates through the corresponding circular pad 7 and then is in threaded connection with the fixing nut 6. The grounding bar 9 is sandwiched between one of the profile plates 2 and the corresponding insulating partition plate 5, or the grounding bar 9 is sandwiched between the two profile plates 2 and the corresponding insulating partition plate 5, and the grounding bar 9 is sandwiched between the two profile plates 2 and the corresponding insulating partition plate 5.
Preferably, the edge of the conductive bar 3 is rounded, so that compared with a square chamfer, the contact area between the conductive bar of the vertical segment of the bus duct and the conductive bar of the connector can be increased to the maximum, and the effective contact resistance between the conductive bar of the vertical segment of the bus duct and the conductive bar of the connector of the bus duct is reduced. The insulating sleeve 4 is a polygonal sleeve, and corresponding sleeve through holes are polygonal holes, so that the installation and positioning of the section bar plate 2, the conductive bar 3 and the insulating partition plate 5 are facilitated. Preferably, the surfaces of the conductive bar 3, the conductive sheets 8 or both the conductive bar 3 and the conductive sheets 8 are plated with silver at the same time to increase the effectiveness of the contact between the conductors; or the surfaces of the conductive bar 3, the conductive sheet 8 or the conductive bar 3 and the conductive sheet 8 are coated with a layer of conductive paste which is non-liquid and non-oily, which is beneficial to improving the contact resistance between the conductive bars.
The above embodiments are merely preferred embodiments of the present invention, and not intended to limit the structure and scope of the invention. Indeed, many equivalent variations in the shapes, constructions and design objectives of the devices according to the present invention are possible. Therefore, all equivalent changes in the shapes, structures and design objectives of the present invention are intended to be covered by the present invention, and all such equivalent changes are intended to be protected by the present invention.
Claims (10)
1. A wind power bus duct connector comprises a fixing bolt (1), a section plate (2), a conductive bar (3), an insulating sleeve (4), an insulating partition plate (5), a fixing nut (6), a circular pad (7) and a conductive sheet (8); one side of the section plate main body is provided with a clamping groove (2.1), the other side of the section plate main body is provided with an isolation raised line (2.2), and the groove width of the clamping groove is larger than the diameter of the circular pad; the method is characterized in that: each fixing bolt, one insulating sleeve, one fixing nut and two circular pads form a wind power bus duct connector mounting and fixing group, and two or more wind power bus duct connector mounting and fixing groups are formed; the insulating partition plates comprise two side insulating partition plates (51) and a plurality of middle insulating partition plates (52); the side surface of the side insulating plate close to the middle insulating plate and the left and right side surfaces of the middle insulating plate are provided with positioning convex columns (5.1) with the same number as the fixing bolts, the conducting bars are correspondingly provided with positioning holes matched with the positioning convex columns, the height of the positioning convex columns is larger than the thickness of the conducting bars, and the sum of the heights of the two positioning convex columns is smaller than the sum of the thicknesses of the two conducting bars and one conducting plate; the other side of the edge insulating plate, which is opposite to the positioning convex column on the edge insulating plate, is provided with a positioning convex strip (5.2); the profile plate, the conductive bar and the insulating partition plate are respectively provided with sleeve through holes which are equal to the number of the mounting and fixing groups of the wind-electricity bus duct connectors and are matched with the insulating sleeves, and the connecting line of the centers of the sleeve through holes on the profile plate, the conductive bar and the insulating partition plate is collinear with the center connecting line of the positioning convex column; two conductive bars are arranged between two adjacent insulating partition plates, the two conductive bars form a conductive bar group, a conductive sheet is respectively clamped between the upper half part and the lower half part of each of the two conductive bars in the conductive bar group, and an intermediate insulating partition plate is arranged between the adjacent conductive bars of the two adjacent conductive bar groups; the number of the conductive row groups is more than or equal to two; the clamping grooves of the left and right section plates are positioned at the outer sides; the round pads are arranged in the clamping grooves of the section plates, and the fixing bolts firstly penetrate through the corresponding round pads and then penetrate through the insulating sleeves; the insulating sleeves are sequentially inserted into the main body of the section plate, the conductive bars in each conductive bar group and sleeve through holes matched with the insulating sleeves, which are formed in the insulating partition plates, and the fixing bolts penetrate through the main body of the section plate on the other side, penetrate through the corresponding circular pads and then are connected with the fixing nuts.
2. The wind power bus duct connector as set forth in claim 1, wherein: the insulating partition board is characterized by further comprising a grounding bar (9), wherein the grounding bar (9) is clamped between one of the section plates (2) and the corresponding insulating partition board (5), or the grounding bar (9) is clamped between the two section plates (2) and the corresponding insulating partition board (5).
3. The wind power bus duct connector as set forth in claim 2, wherein: the grounding bar (9) clamped between the section bar plate (2) and the corresponding insulating partition plate (5) consists of an upper sub grounding bar and a lower sub grounding bar (9.1).
4. The wind power bus duct connector as set forth in claim 2, wherein: the projection of the positioning convex column (5.1) is positioned in the projection of the positioning convex strip (5.2).
5. The wind power bus duct connector as set forth in claim 2, wherein: the height of the positioning convex strip (5.2) is less than that of the positioning convex column (5.1).
6. The wind power bus duct connector as set forth in claim 1, wherein: the edge of the conductive bar (3) is rounded.
7. The wind power bus duct connector as set forth in claim 1, wherein: the insulating sleeve (4) is a polygonal sleeve, and the corresponding sleeve through hole is also a polygonal hole.
8. The wind power bus duct connector as set forth in claim 1, wherein: the surfaces of the conductive bar (3), the conductive sheets (8) or the conductive bar (3) and the conductive sheets (8) are simultaneously plated with silver.
9. The wind power bus duct connector as set forth in claim 1, wherein: the surfaces of the conductive bar (3), the conductive sheet (8) or the conductive bar (3) and the conductive sheet (8) are coated with a layer of conductive paste.
10. The wind power bus duct connector as set forth in claim 1, wherein: the circular pad (7) is a butterfly spring pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010208155.XA CN111478258A (en) | 2020-03-23 | 2020-03-23 | Wind-powered electricity generation bus duct connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010208155.XA CN111478258A (en) | 2020-03-23 | 2020-03-23 | Wind-powered electricity generation bus duct connector |
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| Publication Number | Publication Date |
|---|---|
| CN111478258A true CN111478258A (en) | 2020-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010208155.XA Pending CN111478258A (en) | 2020-03-23 | 2020-03-23 | Wind-powered electricity generation bus duct connector |
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| CN (1) | CN111478258A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114427055A (en) * | 2022-01-26 | 2022-05-03 | 阳光电源股份有限公司 | Aluminum alloy material, conductive bar and calculation method of creep residual life of conductive bar |
-
2020
- 2020-03-23 CN CN202010208155.XA patent/CN111478258A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114427055A (en) * | 2022-01-26 | 2022-05-03 | 阳光电源股份有限公司 | Aluminum alloy material, conductive bar and calculation method of creep residual life of conductive bar |
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