CN203014476U - Emergency explosion-proof frequency converter for dealing with coal mine power failure - Google Patents
Emergency explosion-proof frequency converter for dealing with coal mine power failure Download PDFInfo
- Publication number
- CN203014476U CN203014476U CN 201220636671 CN201220636671U CN203014476U CN 203014476 U CN203014476 U CN 203014476U CN 201220636671 CN201220636671 CN 201220636671 CN 201220636671 U CN201220636671 U CN 201220636671U CN 203014476 U CN203014476 U CN 203014476U
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- China
- Prior art keywords
- frequency converter
- explosion
- coal mine
- power failure
- proof frequency
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model provides an emergency explosion-proof frequency converter for dealing with coal mine power failure and belongs to explosion-proof electric devices. According to the utility model, a battery pack, a selector switch and a power failure emergency master control unit are added on a basis of a common explosion-proof frequency converter. Therefore, the emergency explosion-proof frequency converter for dealing with coal mine power failure can be used even when preceding-stage power supply of the emergency explosion-proof frequency converter for dealing with coal mine power failure is cut off, and requirements for non-stop speed-regulating operation of an underground variable-frequency ventilator of a coal mine is satisfied.
Description
Technical field
The utility model relates to a kind of colliery current failure emergency explosion-proof frequency converter, belongs to explosion-proof electric apparatus, is applicable to explosive gas atmosphere.
Background technology
As everyone knows, the key element of coal mine downhole safety production most critical is to ventilate.The down-hole still has a lot of tunnels need adopt local variable-frequency ventilation machine to ventilate at present.Along with continuing to increase of mine scale, the coal-face of single mine also constantly increases, and makes the use of local variable-frequency ventilation machine also increase thereupon.Existing variable-frequency ventilation machine adopts the allocation plan of duplicate supply, bi-motor and dual frequency converter speed governing.This scheme can prevent to overlap because of one road power supply, a cover frequency converter or a shutdown that electrical fault causes; but when the two-way power supply all during fault; the variable-frequency ventilation machine just can not work on, and interruption duration is slightly long, and this airway all personnel must withdraw to guarantee safety immediately.
Summary of the invention
In order to ensure the two-way power supply all during fault, the variable-frequency ventilation machine still can work on, and the utility model provides a kind of colliery current failure emergency explosion-proof frequency converter, belongs to explosion-proof electric apparatus.Colliery current failure emergency explosion-proof frequency converter is on the basis of common explosion-proof frequency converter; by increasing large-capacity battery pack, diverter switch and current failure emergency main control unit; realization is in the situation that explosion-proof frequency converter prime power cut-off; explosion-proof frequency converter still can continue to use, and does not shut down speed governing operation with what satisfy coal mine down-conversion ventilation blower.
The technical scheme that its technical problem that solves the utility model adopts is: on the basis of common explosion-proof frequency converter, the DC loop of frequency converter is by the diverter switch battery pack that increases in parallel, by current failure emergency master control unit frequency converter, battery pack and diverter switch being monitored and controlled.The quantity of battery pack can be determined according to power failure length running time.The current failure emergency explosion-proof frequency converter provides power supply by rectifier bridge to inverter and motor in when normal operation, and current failure emergency master control simultaneously unit need to judge whether charging by the electric weight that detects battery.When needs charge, charge the battery by dc charger, until be full of standby.All during fault, the closed battery pack of current failure emergency master control unit controls diverter switch continues to provide power supply to inverter and motor when level power supply before two-way.
The beneficial effects of the utility model: reduce the variable-frequency ventilation machine that causes because of power failure and shut down, strengthen the stability of colliery underground ventilating.
Description of drawings
Fig. 1 is explosion-resistant enclosure structure chart of the present utility model.
Fig. 2 is electrical schematic diagram of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated.
As shown in Figure 1, the utility model colliery current failure emergency explosion-proof frequency converter is comprised of man-machine interface 1, inlet-outlet line device 2, control button 3, control change over switch 4, wire connection cavity 5 and equipment cavity 6, explosion-proof frequency converter is formed by Plate Welding, be divided into 2 independently equipment cavity and 2 wire connection cavities independently, all chambers are equipped with respectively the door closure that can open, door closure and casing are carved tightly with bolted or with buckle, require a gap less than 0.3 millimeter, carry out circuit with explosion-proof binding post between two equipment cavities and connect, cable entry 2 is installed on the wire connection cavity wall; Radiator is arranged on the outward flange of anti-explosion box body back.Whole product processing and fabricating is observed the relevant regulations of " safety regulations in coal mine " and GB3836-2010 fully.
As shown in Figure 2, colliery current failure emergency explosion-proof frequency converter inside is comprised of rectification unit, capacitance group, inversion unit, control unit, battery pack, diverter switch and current failure emergency master control unit.Under the normal power source electric power thus supplied, diode bridge rectification three phase mains provides DC power supply by K1 and K2 to frequency converter, simultaneously by charger to batteries charging.The frequency converter inversion unit effect that consists of with IGBT generates three-phase symmetrical alternating voltage driving variable-frequency ventilation machine.In the situation of power failure, the master control unit disconnects K1 and K2, and connects K3, by battery pack to inverter supply.The master control unit is monitored and is controlled battery pack in real time except controlling frequency converter, diverter switch normal operation.When battery pack was owed electricity, the connection charger was batteries charging.When battery pack is full of, control charger and stop batteries charging, to prevent the transition of charging, affect battery.To be the user be connected the connection bridge with the master control unit with frequency converter in man-machine interface, in order to monitoring with control master control unit and frequency converter.
Claims (2)
1. colliery current failure emergency explosion-proof frequency converter, it is characterized in that: described colliery current failure emergency explosion-proof frequency converter is comprised of explosion-proof frequency converter, battery pack, diverter switch and current failure emergency main control unit.
2. colliery according to claim 1 current failure emergency explosion-proof frequency converter, it is characterized in that: diverter switch adopts IGBT as switching device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220636671 CN203014476U (en) | 2012-11-28 | 2012-11-28 | Emergency explosion-proof frequency converter for dealing with coal mine power failure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220636671 CN203014476U (en) | 2012-11-28 | 2012-11-28 | Emergency explosion-proof frequency converter for dealing with coal mine power failure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203014476U true CN203014476U (en) | 2013-06-19 |
Family
ID=48606033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220636671 Expired - Fee Related CN203014476U (en) | 2012-11-28 | 2012-11-28 | Emergency explosion-proof frequency converter for dealing with coal mine power failure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203014476U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114793014A (en) * | 2022-04-29 | 2022-07-26 | 中信重工开诚智能装备有限公司 | Mining explosion-proof frequency converter with emergency power supply and control method |
| CN114884204A (en) * | 2022-06-21 | 2022-08-09 | 中信重工开诚智能装备有限公司 | High-voltage high-capacity mining explosion-proof emergency power supply and control method |
-
2012
- 2012-11-28 CN CN 201220636671 patent/CN203014476U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114793014A (en) * | 2022-04-29 | 2022-07-26 | 中信重工开诚智能装备有限公司 | Mining explosion-proof frequency converter with emergency power supply and control method |
| CN114884204A (en) * | 2022-06-21 | 2022-08-09 | 中信重工开诚智能装备有限公司 | High-voltage high-capacity mining explosion-proof emergency power supply and control method |
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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: 20130619 Termination date: 20191128 |