CN203632590U - Explosive-proof and intrinsically-safe dual-power source frequency conversion and speed regulation device - Google Patents
Explosive-proof and intrinsically-safe dual-power source frequency conversion and speed regulation device Download PDFInfo
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- CN203632590U CN203632590U CN201320825652.XU CN201320825652U CN203632590U CN 203632590 U CN203632590 U CN 203632590U CN 201320825652 U CN201320825652 U CN 201320825652U CN 203632590 U CN203632590 U CN 203632590U
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- input
- electrically connected
- output
- contactor
- intrinsically safe
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- 238000006243 chemical reaction Methods 0.000 title abstract description 4
- 238000004880 explosion Methods 0.000 claims description 13
- 239000003990 capacitor Substances 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 9
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 230000009977 dual effect Effects 0.000 abstract 1
- 239000003245 coal Substances 0.000 description 6
- 239000002817 coal dust Substances 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Inverter Devices (AREA)
Abstract
The utility model discloses an explosive-proof and intrinsically-safe dual-power source frequency conversion and speed regulation device comprising a main disconnecting switch, an input electric reactor, an alternating current contactor, a power converter, a main controller and a control protection unit. An output end of the main disconnecting switch is electrically connected with an input end of the input electric reactor; an output end of the input electric reactor is electrically connected with an input end of the alternating current contactor; an output end of the alternating current contactor is electrically connected with an input end of the power converter; the output end of the power converter is electrically connected with the control protection unit; and the control protection unit is electrically connected with the main controller. The explosive-proof and intrinsically-safe dual power source frequency conversion and speed regulation device has the advantages of speed regulation, energy conservation and automatic switching control and has the protection functions of overload protection, open-phase protection, short-circuit protection, overvoltage protection and undervoltage protection.
Description
Technical field
The utility model relates to the frequency converter using under coal mine, Flameproof intrinsically safe duplicate supply RHVC for the blower fan particularly using under coal mine.
Background technology
Along with the integration and upgrade of country to colliery, the output in single colliery is increasing, its fully-mechanized mining working, the power of motor that tape transport system uses is also increasing, the direct starting current of motor is large, and electrical network is caused to very large impact, and falling appears in power supply, affect other equipment and normally move, have a strong impact on power supply safety and electric power system reliability.At present, the main equipment in colliery, for example coal-winning machine, development machine and ribbon conveyer, the most of fluid coupling that adopts of its speed governing, or by the speed governing of rotor serializer circuit method, the former is difficult in maintenance, and the latter is step speed regulation, and starting current and gearshift rush of current are large.
Coal quo of local Fan for Mine is generally used for digging laneway, and because digging laneway constantly extends, often roadway distance is short at first, and the air quantity needing is also little, when roadway distance is long, just needs blower fan full speed running.
Digging laneway is if there is gas accumulation, in order to prevent that gas is discharged into main ventilation lane in a large number, cause massive gas to transfinite, often need low velocity discharge, in the situation that guaranteeing that main tunnel gas does not transfinite progressively by complete the drawing-off gas of the digging laneway headwork of carrying out again.
Digging laneway environment is poor, in present low gas situation, suitably reduces ventilation quantity and can reduce coal dust, improves operational environment.
Adopt transducer drive booster can meet above requirement completely, realize automatic drawing-off gas, automatic exhausting control, the functions such as blower fan automatic speed regulation control.
Summary of the invention
The purpose of this utility model is for instructions for use under coal mine; provide one to there is speed governing, energy-conservation and automatically switch and control, and there is overload protection, open phase protection, short-circuit protection, overvoltage, the integrated Flameproof intrinsically safe duplicate supply of the defencive function RHVC such as under-voltage.
The utility model is achieved through the following technical solutions:
Flameproof intrinsically safe duplicate supply RHVC; comprise main isolating switch, input reactance device, A.C. contactor, power inverter, master controller, control protected location; the output of main isolating switch is electrically connected with the input of input reactance device; the output of input reactance device is electrically connected with the input of A.C. contactor; the output of A.C. contactor is electrically connected with the input of power inverter; the output of power inverter is electrically connected with controlling protected location, controls protected location and goes back master controller electrical connection.
Preferably, also comprise an explosion-resistant enclosure, described main isolating switch, input reactance device, A.C. contactor, power inverter, master controller, control protected location are arranged in explosion-resistant enclosure.
Preferably, also comprise a cooling system, this cooling system is arranged on explosion-resistant enclosure.
Preferably, described cooling system is mine anti-explosion large power heat pipe radiator.
Preferably, described power inverter comprises rectifier, filter capacitor and inverter, and the output of rectifier is connected with one end of straight filter capacitor, and the input of the other end inverter of filter capacitor connects.
Preferably, on described master controller, be provided with gas monitor mouth, air quantity monitoring mouth and automatic transfer switch.
Adopted such scheme, the utlity model has variable frequency starting, stop, speed governing operation function, realizes good energy-saving effect, and dustproof, the advantage such as moistureproof, explosion-proof, maintenance is little, adopts numeral to show, has the functions such as far and near control, automatic switchover; There is overload, disconnected phase, short circuit, overvoltage, the defencive function such as under-voltage, overheated.Can be used for having coal dust or gas explosion occasion under coal mine, Coal Mine Ventilator is controlled and protection.
Below in conjunction with accompanying drawing, the utility model is described further.
Accompanying drawing explanation
Fig. 1 is the utility model system forming circuit block diagram;
Fig. 2 is the utility model control system structural representation;
Embodiment
With reference to Fig. 1, three-level inverter static direct current output driving device of the present utility model, comprises main isolating switch, input reactance device, A.C. contactor, power inverter, master controller, control protected location.Main isolating switch is hand switch, and main isolating switch breaks down can not protect time in system, hand off main circuit power.The output of main isolating switch is electrically connected with the input of input reactance device; input reactance device is for reducing input harmonics; the output of input reactance device is electrically connected with the input of A.C. contactor; the output of A.C. contactor is electrically connected with the input of power inverter; the output of power inverter is electrically connected with control protected location; described power inverter comprises rectifier, filter capacitor and inverter; the output of rectifier is connected with one end of straight filter capacitor, and the input of the other end inverter of filter capacitor connects.Control protected location and go back master controller electrical connection.Control protected location according to system mode; control A.C. contactor adhesive and disconnection; to provide or power switched converter main power source; its secondary control system comprises DSP control module and conditioning module, and conditioning module receives unlike signal, and is the signal that DSP control module can receive by circuit conversion; DSP control module is mainly according to (IO) status signal; sampled signal judges system mode, and control contactor starts or stop power inverter.On described master controller, be provided with gas monitor mouth, air quantity monitoring mouth and automatic transfer switch.Also comprise an explosion-resistant enclosure, described main isolating switch, input reactance device, A.C. contactor, power inverter, master controller, control protected location are arranged in explosion-resistant enclosure.Also comprise a cooling system, this cooling system is arranged on explosion-resistant enclosure.Described cooling system is mine anti-explosion large power heat pipe radiator.
Input power is powered to power inverter through main isolating switch, input reactance device, A.C. contactor, power inverter is divided into rectifier, filter capacitor and inverter, three-phase alternating-current supply is transformed to direct current through rectifier, through DC electrolysis capacitor filtering, give inverter power supply, the power supply of inverter output voltage and changeable frequency, controls blower fan starting, moves and stop.
With reference to Fig. 2, control system of the present utility model comprises master controller, relatively independent frequency-changing control system and the man-machine interface of two covers.The master controller control that booster is sent command adapted thereto and realizes to each dsp controller in comprehensive judgement according to external status (gas density and air quantity) and the current internal state of system.
Claims (6)
1. a Flameproof intrinsically safe duplicate supply RHVC; it is characterized in that comprising main isolating switch, input reactance device, A.C. contactor, power inverter, master controller, control protected location; the output of main isolating switch is electrically connected with the input of input reactance device; the output of input reactance device is electrically connected with the input of A.C. contactor; the output of A.C. contactor is electrically connected with the input of power inverter; the output of power inverter is electrically connected with controlling protected location, controls protected location and goes back master controller electrical connection.
2. Flameproof intrinsically safe duplicate supply RHVC according to claim 1; it is characterized in that: also comprise an explosion-resistant enclosure, described main isolating switch, input reactance device, A.C. contactor, power inverter, master controller, control protected location are arranged in explosion-resistant enclosure.
3. Flameproof intrinsically safe duplicate supply RHVC according to claim 1 and 2, is characterized in that: also comprise a cooling system, this cooling system is arranged on explosion-resistant enclosure.
4. Flameproof intrinsically safe duplicate supply RHVC according to claim 3, is characterized in that: described cooling system is mine anti-explosion large power heat pipe radiator.
5. Flameproof intrinsically safe duplicate supply RHVC according to claim 1, it is characterized in that: described power inverter comprises rectifier, filter capacitor and inverter, the output of rectifier is connected with one end of straight filter capacitor, and the input of the other end inverter of filter capacitor connects.
6. Flameproof intrinsically safe duplicate supply RHVC according to claim 1, is characterized in that: on described master controller, be provided with gas monitor mouth, air quantity monitoring mouth and automatic transfer switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320825652.XU CN203632590U (en) | 2013-12-13 | 2013-12-13 | Explosive-proof and intrinsically-safe dual-power source frequency conversion and speed regulation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320825652.XU CN203632590U (en) | 2013-12-13 | 2013-12-13 | Explosive-proof and intrinsically-safe dual-power source frequency conversion and speed regulation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203632590U true CN203632590U (en) | 2014-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320825652.XU Expired - Lifetime CN203632590U (en) | 2013-12-13 | 2013-12-13 | Explosive-proof and intrinsically-safe dual-power source frequency conversion and speed regulation device |
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| Country | Link |
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| CN (1) | CN203632590U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715968A (en) * | 2013-12-13 | 2014-04-09 | 常州联力自动化科技有限公司 | Flameproof double-power-supply variable-frequency speed regulation system |
-
2013
- 2013-12-13 CN CN201320825652.XU patent/CN203632590U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715968A (en) * | 2013-12-13 | 2014-04-09 | 常州联力自动化科技有限公司 | Flameproof double-power-supply variable-frequency speed regulation system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140604 |
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| CX01 | Expiry of patent term |