CN203399022U - Explosion-suppression and intrinsically-safe low-frequency soft-starting apparatus for mine - Google Patents
Explosion-suppression and intrinsically-safe low-frequency soft-starting apparatus for mine Download PDFInfo
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- CN203399022U CN203399022U CN201320094809.6U CN201320094809U CN203399022U CN 203399022 U CN203399022 U CN 203399022U CN 201320094809 U CN201320094809 U CN 201320094809U CN 203399022 U CN203399022 U CN 203399022U
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- thyristor
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- frequency power
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- Control Of Conveyors (AREA)
- Motor And Converter Starters (AREA)
Abstract
An explosion-suppression and intrinsically-safe low-frequency soft-starting apparatus for a mine comprises a three-phase half-wave thyristor circulating-current-free low-frequency power supply and a thyristor alternating-current voltage-regulating soft starter. The power supply side of the three-phase half-wave thyristor circulating-current-free low-frequency power supply and the power supply side of the thyristor alternating-current voltage-regulating soft starter are connected in parallel, while the load sides of the both are connected with output in parallel. The three-phase half-wave thyristor circulating-current-free low-frequency power supply and the thyristor alternating-current voltage-regulating soft starter are effectively combined, thereby not only reserving the advantages of the soft starter, but also overcoming the problem of difficulty of heavy load start. At the same time, on-load full-speed operation and no-load low-speed operation are realized, thereby achieving an obvious energy saving effect. Machine faults are reduced and the maintenance is convenient.
Description
Technical field
The utility model relates to a kind of mine flameproof and intrinsic safety low frequency soft starting device.
Background technology
Three-phase AC asynchronous motor is simple in structure owing to having, control easy to maintenance, stable performance, efficiency advantages of higher, be applied to widely in the links of coal production, scratch board conveyor wherein, belt conveyer is transporting equipment main in coal production process, and this kind equipments of great majority adopt the control mode of soft starts a few days ago, although relatively directly start, there is the impact reducing electrical network and equipment, starting current can limit, starting device is level and smooth, put into practice the advantages such as controlled, but still there is heavy load starting difficult problem, although there are many producers also to adopt some ways, or can not solve heavy load starting problem.
Summary of the invention
The purpose of this utility model is to provide a kind of mine flameproof and intrinsic safety low frequency soft starting device, to solve the problem of mine scratch board conveyor and belt conveyer heavy load starting difficulty, can realize and carry full speed running simultaneously, unloaded low cruise, and then it is remarkable to realize energy-saving effect.Reduce mechanical fault, convenient maintenance.
The utility model is to address the above problem the technical scheme of taking to be: mine flameproof and intrinsic safety low frequency soft starting device described in the utility model comprises that three-phase semiwave thyristor is without circulation low-frequency power and thyristor alternating-current pressure regulation soft start.Described three-phase semiwave thyristor is connected in parallel without the mains side of circulation low-frequency power mains side and thyristor alternating-current pressure regulation soft start, the output that is connected in parallel of their load side.
The beneficial effects of the utility model are: three-phase semiwave thyristor is without circulation low-frequency power and the effective combination of thyristor alternating-current pressure regulation soft start, the advantage that not only retains soft start, but also overcome the problem of heavy load starting difficulty, can realize and carry full speed running simultaneously, unloaded low cruise, and then it is remarkable to realize energy-saving effect.Reduce mechanical fault, convenient maintenance, therefore says that mine flameproof and intrinsic safety low frequency soft starting device is mine scratch board conveyor and the desirable selection of belt conveyer, has filled up domestic vacancy.
Accompanying drawing explanation:
Fig. 1 is the electrical schematic diagram of mine flameproof and intrinsic safety low frequency soft starting device.
Embodiment
One of embodiment: in conjunction with Fig. 1, present embodiment is described, mine flameproof and intrinsic safety low frequency soft starting device comprises that three-phase semiwave thyristor is without circulation low-frequency power and thyristor alternating-current pressure regulation soft start described in present embodiment.
Two of embodiment: present embodiment is described in conjunction with Fig. 1, three-phase semiwave thyristor described in present embodiment in mine flameproof and intrinsic safety low frequency soft starting device is connected in parallel without the mains side of circulation low-frequency power mains side and thyristor alternating-current pressure regulation soft start, the output that is connected in parallel of their load side.
Claims (1)
1. a mine flameproof and intrinsic safety low frequency soft starting device, is characterized in that, it comprises that three-phase semiwave thyristor is without circulation low-frequency power (1) and thyristor alternating-current pressure regulation soft start (2);
Described three-phase semiwave thyristor is connected in parallel without the mains side of circulation low-frequency power (1) mains side and thyristor alternating-current pressure regulation soft start (2), the output that is connected in parallel of their load side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320094809.6U CN203399022U (en) | 2013-03-03 | 2013-03-03 | Explosion-suppression and intrinsically-safe low-frequency soft-starting apparatus for mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320094809.6U CN203399022U (en) | 2013-03-03 | 2013-03-03 | Explosion-suppression and intrinsically-safe low-frequency soft-starting apparatus for mine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203399022U true CN203399022U (en) | 2014-01-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320094809.6U Expired - Fee Related CN203399022U (en) | 2013-03-03 | 2013-03-03 | Explosion-suppression and intrinsically-safe low-frequency soft-starting apparatus for mine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203399022U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017103140A3 (en) * | 2015-12-18 | 2017-07-27 | Fairford Electronics Limited | Parallel use of soft starters |
-
2013
- 2013-03-03 CN CN201320094809.6U patent/CN203399022U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017103140A3 (en) * | 2015-12-18 | 2017-07-27 | Fairford Electronics Limited | Parallel use of soft starters |
| US10804836B2 (en) | 2015-12-18 | 2020-10-13 | Motortronics Uk Limited | Parallel use of soft starters |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140115 Termination date: 20160303 |