CN201682270U - Overvoltage absorption device of special frequency converter of mine hoist - Google Patents
Overvoltage absorption device of special frequency converter of mine hoist Download PDFInfo
- Publication number
- CN201682270U CN201682270U CN2010201584248U CN201020158424U CN201682270U CN 201682270 U CN201682270 U CN 201682270U CN 2010201584248 U CN2010201584248 U CN 2010201584248U CN 201020158424 U CN201020158424 U CN 201020158424U CN 201682270 U CN201682270 U CN 201682270U
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- busbar
- bus
- mine hoist
- negative
- frequency converter
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Abstract
The utility model belongs to the technical field of frequency conversion of a mine hoist, and mainly relates to an overvoltage absorption device of a special frequency converter of a mine hoist, which comprises a positive bus (3), a negative bus (2) and a non-polar capacitor (1), wherein the positive bus (3) is fixed on the '+' polar bus, the negative bus (2) is fixed on the '-' polar bus, and the non-polar capacitor (1) is connected with the positive bus and the negative bus via a welding pad (5). The overvoltage absorption device has the advantages of simple and reasonable design, the creepage distance inside the frequency converter is ensured by bending the positive bus and the negative bus towards the direction of the fixed capacitor. Grooves of the positive bus and the negative bus on the periphery of the fixed capacitor can prevent heat of a welding torch from being absorbed by the buses fast during a process of welding the non-polar capacitor, the non-polar capacitor is stably connected with the positive bus and the negative bus, and overvoltage can be effectively absorbed, thereby ensuring safe and reliable running of the mine hoist.
Description
Technical field
The utility model belongs to mine hoist converter technique field, relates generally to a kind of overvoltage absorption plant of mine hoist special converter.
Background technology
At present, traditional mine hoist frequency converter uses discrete capacitor to be connected to the emitter and collector two ends of DC master row two ends or IGBT as surge absorber, so that the overvoltage in the absorption frequency converter, thereby protected power device IGBT to avoid over-voltage breakdown, but thisly mainly have following shortcoming with discrete capacitor as surge absorber: 1) mounting structure of discrete capacitor is uncertain, the distributed capacitance value and the distributed inductance value that produce are uncertain, influence the stable operation of frequency converter; 2) superpotential assimilation effect is poor, can't avoid causing because of overvoltage the punch through damage of IGBT effectively; 3) mine hoist is transferred in the process in negative power moderating process or weight, need be by frequency converter to the electrical network feedback electric energy, in frequency converter, can produce the overvoltage that is several times as much as line voltage, this overvoltage can cause the damage of frequency converter, influence the safe and reliable operation of mine hoist, this overvoltage only depends on discrete capacitor effectively to absorb.
Summary of the invention
The purpose of this utility model is the overvoltage absorption plant that proposes a kind of mine hoist special converter, be used to improve the reliability of frequency converter work and make more advantages of simple of its structure, use discrete capacitor as the existing shortcoming of surge absorber thereby overcome.
The utility model is finished the technical scheme that its invention task taked: a kind of overvoltage absorption plant of mine hoist special converter, comprise positive busbar, negative busbar and be arranged on positive busbar and negative busbar between one group of non-polar condenser, described positive busbar is fixed on "+" level busbar of frequency converter, and negative busbar is fixed on "-" utmost point busbar of frequency converter.
The edge that is connected with non-polar condenser on described positive busbar, the negative busbar is twice vertical bending structure, and the direction of each bending is towards the electrodeless electric capacity device.
The edge that is connected with non-polar condenser on described positive busbar, the negative busbar is provided with a plurality of Baltimore grooves, and the projection between every adjacent two Baltimore grooves is provided with the fixedly pad of non-polar condenser; Described one group of non-polar condenser links together by pad and positive busbar, negative busbar.
Described a plurality of Baltimore groove on the edge of positive busbar, negative busbar for equidistant be interrupted arrange and the area of each Baltimore groove greater than the area that is arranged on the pad on the projection.
The utility model proposes a kind of overvoltage absorption plant of mine hoist special converter, have simplicity of design, rational characteristics.Being converted into directly curved toward the fixed capacitor direction positive and negative busbar is to stay suitable space for the pad of giving capacitor, the creepage distance of guaranteeing frequency converter inside meets relevant national standard, the edge of positive and negative busbar fixed capacitor is provided with the Baltimore groove of alternately arranging with pad, and the area of Baltimore groove is greater than the area of pad, can make in the process of welding capacitor, the heat of welding gun can not absorbed rapidly by busbar, guarantees the quality of solder joint.Make overvoltage effectively be absorbed, guaranteed the safe and reliable operation of mine hoist.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the structure chart of the negative busbar of the utility model.
Fig. 4 is the left view of Fig. 3.
Fig. 5 is the structure chart of the positive busbar of the utility model.
Fig. 6 is the left view of Fig. 5.
Among the figure: 1, non-polar condenser, 2, negative busbar, 3, positive busbar, 4, the busbar installing hole, 5, pad.
Embodiment
In conjunction with the accompanying drawings the utility model embodiment is illustrated:
As shown in Figure 1, a kind of overvoltage absorption plant of mine hoist special converter, comprise positive busbar 3, negative busbar 2 and be arranged on positive busbar and negative busbar between one group of non-polar condenser 1; Described positive busbar 2 is connected with "+" level busbar of frequency converter by the installing hole on the frequency converter 4, and negative busbar is connected with "-" utmost point busbar of frequency converter by the installing hole on the frequency converter 4; The edge that is connected with non-polar condenser on described positive busbar 3, the negative busbar 2 is twice vertical bending structure, the direction of each bending is towards non-polar condenser, have a plurality of Baltimore grooves on positive busbar 3, the negative busbar 2 with on the edge that non-polar condenser is connected, described Baltimore groove is to arrange equidistant the interruption, has projection between every two adjacent Baltimore grooves, be welded with a pad 5 on each projection, thereby non-polar condenser 1 is welded on the pad 5 non-polar condenser 1 and positive busbar 3, negative busbar 2 is being linked together; The area of described pad 5 is less than the area of the Baltimore groove on positive busbar, the negative busbar; The edge that positive busbar 3, negative busbar 2 are connected with non-polar condenser is that twice vertical bending structure leaves certain space for the pad 5 of welding capacitor, guarantee the inner creepage distance of frequency converter, positive busbar 3, negative busbar 2 relative two edges are provided with the Baltimore groove of regular shape, because the area of Baltimore groove is greater than the area of pad 5, thereby the heat of welding gun in the process of welding can not absorbed apace by busbar, guarantee the quality of solder joint, reduce frequency converter internal electromagnetic annoyance level.
Claims (4)
1. overvoltage absorption plant that is used for the mine hoist special converter, it is characterized in that: comprise positive busbar (3), negative busbar (2) and be arranged on positive busbar and negative busbar between one group of non-polar condenser (1), described positive busbar (3) is fixed on "+" level busbar of frequency converter, and negative busbar (2) is fixed on "-" utmost point busbar of frequency converter.
2. a kind of overvoltage absorption plant that is used for the mine hoist special converter according to claim 1, it is characterized in that: the edge that described positive busbar (3), negative busbar (2) are connected with non-polar condenser (1) is twice vertical bending structure, and the direction of each bending is towards non-polar condenser.
3. a kind of overvoltage absorption plant that is used for the mine hoist special converter according to claim 1, it is characterized in that: have a plurality of Baltimore grooves on described positive busbar (3), negative busbar (2) and the edge that non-polar condenser (1) is connected, whenever the projection between adjacent two Baltimore grooves is provided with the fixedly pad of non-polar condenser (5); Described non-polar condenser links together by pad (5) and positive busbar (3), negative busbar (2).
4. a kind of overvoltage absorption plant that is used for the mine hoist special converter according to claim 3 is characterized in that: described Baltimore groove is for equidistantly being interrupted the area of arrangement and each Baltimore groove greater than the area that is arranged on the pad (5) on the projection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201584248U CN201682270U (en) | 2010-04-14 | 2010-04-14 | Overvoltage absorption device of special frequency converter of mine hoist |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201584248U CN201682270U (en) | 2010-04-14 | 2010-04-14 | Overvoltage absorption device of special frequency converter of mine hoist |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201682270U true CN201682270U (en) | 2010-12-22 |
Family
ID=43347303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201584248U Expired - Fee Related CN201682270U (en) | 2010-04-14 | 2010-04-14 | Overvoltage absorption device of special frequency converter of mine hoist |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201682270U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103701300A (en) * | 2013-12-10 | 2014-04-02 | 深圳市正弦电气股份有限公司 | Laminated busbars and frequency converter |
-
2010
- 2010-04-14 CN CN2010201584248U patent/CN201682270U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103701300A (en) * | 2013-12-10 | 2014-04-02 | 深圳市正弦电气股份有限公司 | Laminated busbars and frequency converter |
| CN103701300B (en) * | 2013-12-10 | 2016-06-08 | 深圳市正弦电气股份有限公司 | A kind of laminated bus bars and converter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101222 Termination date: 20180414 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |