CN202103566U - Mine explosion-proof intrinsic safety-typed alternative-current frequency converter - Google Patents
Mine explosion-proof intrinsic safety-typed alternative-current frequency converter Download PDFInfo
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- CN202103566U CN202103566U CN 201120217621 CN201120217621U CN202103566U CN 202103566 U CN202103566 U CN 202103566U CN 201120217621 CN201120217621 CN 201120217621 CN 201120217621 U CN201120217621 U CN 201120217621U CN 202103566 U CN202103566 U CN 202103566U
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Abstract
The utility model relates to a mine explosion-proof intrinsic safety-typed alternative-current frequency converter, which comprises a main wire connecting cavity and a main cavity, which are sequentially arranged in the vertical direction, wherein a plurality of main circuit leading-in wire connecting poles, a plurality of main circuit leading-out wire connecting poles and a plurality of nine-core control wire connecting terminals are arranged inside the main wire connecting cavity; two sides of the main wire connecting cavity are provided with a main circuit cable lead-in device and a control cable lead-in device, and the front side surface of the main wire connecting cavity is provided with a plurality of control cable lead-in devices; and the front end part of the main cavity is provided with a main cavity door, a door opening mechanism is arranged between one side of the main cavity and the main cavity door, and the joint surface between the main cavity and the main cavity door is an explosion-proof joint surface. The direct torque control technology is adopted, and the speed of an alternative-current motor can be smoothly adjusted, so the speed adjusting performance of the alternative-current motor can be competitive with that of a direct-current motor, the starting torque is large, the starting rotating speed is low, the running of the motor can also be monitored in the whole process, and the functions such as energy conservation, adjustment of motor power output, change of motor running direction, change of speed and the like can be realized.
Description
Technical field
The utility model relates to the technical field of AC converter, specifically is a kind of mine flameproof and intrinsic safety type AC converter.
Background technology
Mining AC converter is had relatively high expectations to fail safe and reliability.Therefore,, be the technical problem that this area will solve how through a kind of simple in structure, easy for installation and reliability mine flameproof and intrinsic safety type AC converter preferably.
The utility model content
The technical problem that the utility model will solve provides a kind of simple in structure, simple in structure, easy for installation and reliability mine flameproof and intrinsic safety type AC converter preferably.
In order to solve the problems of the technologies described above; The utility model provides a kind of mine flameproof and intrinsic safety type AC converter; It comprises: the main electrical scheme chamber and the main chamber that are provided with up and down are provided with a plurality of major loop inlet wire binding posts, a plurality of major loop outlet binding post and a plurality of nine cores control binding post in the main electrical scheme chamber; The both sides in main electrical scheme chamber are provided with main loop cabling introducing device, control cable introducing device, and the leading flank in main electrical scheme chamber is provided with a plurality of control cable introducing devices; The leading section in main chamber is provided with main chamber door, is provided with door-opening mechanism between a side in main chamber and the main chamber door, and the composition surface between main chamber and the main chamber door is a flameproof joint.
Further; Said main chamber door is provided with and is used to show that the operational factor of frequency converter and log are observation windows, and the lower end of observation window is provided with in parameter and button, function setting button, start button, stop button is set, resets and change over switch that two are used to select to move working method.
Further, be provided with frequency converter assembly, control circuit, control transformer, intrinsically safe circuit plate, isolating switch and vacuum contactor in the said main chamber.
The technique scheme of the utility model is compared prior art and had the following advantages: the mine flameproof and intrinsic safety type AC converter of (1) the utility model adopts direct moment control technology; Can carry out stepless speed control to alternating current machine; The speed adjusting performance of alternating current machine can be compared favourably with the DC motor speed-regulating performance: starting torque is big, starting speed is low; Can carry out complete monitoring to the motor operation simultaneously, reach energy-conservation, regulate power of motor output, change functions such as motor traffic direction, speed.Its core component such as rectification, inverter power element, DSP microprocessor and control unit all adopt the original-pack ABB product of import.Adopt new and high technologies such as advanced DSP microprocessor and power electronic technology and digital no velocity control, low pressure inductance busbar, the automatic commutation of AFE, electronic filtering, power model heat pipe heat radiation, thoroughly machinery and the electrical impact in the abatement apparatus start-up course.The heat pipe heat radiation technology is adopted in the heat radiation of power component, has solved a heat dissipation technology difficult problem of moving when high-power flame proof frequency converter is grown.It also has defencive functions such as overvoltage, under-voltage, overcurrent, overload, overheated, phase shortage in addition, and various faults all can show and supply through LCD check that at any time the automatic record trouble of computer makes things convenient for fault inquiry and processing.(2) the mine flameproof and intrinsic safety type AC converter of the utility model is applicable to the colliery of containing damp (methane) and coal dust.Exchanging 0 to 60Hz; In the voltage 660V electric power system; Power 250KW and following AC induction motor are carried out controls such as frequency modulation soft start, speed governing, switching-over, the output of adjusting power of motor, inertia parking, soft stop; And circuit and motor carried out integrated protection, also can carry out the chain control of equipment of many same models.Can satisfy the control requirement of different loads characteristics such as blower fan, water pump, sealing-tape machine, scraper plate machine, compressor, different loads object.This product adopts diode rectification, can only make machine operation at motoring condition.(3) there is an observation window in the front, main chamber of this AC converter, can observe each operational factor of frequency converter, check various records.Two row's buttons are arranged, seven buttons of first row below the observation window: be respectively fast rise, reduce soon, raise slowly, reduce slowly, affirmation, parameter, benchmark, carry out parameter setting and function setting with them.Second row has three buttons: start, stop, resetting, two change over switches are arranged below, be used for selecting the operation working method.Parts such as frequency converter assembly, control circuit, control transformer, intrinsically safe circuit plate, isolating switch, vacuum contactor are arranged in the main chamber.(4) this frequency converter adopts direct moment control technology, reduces supply voltage and frequency during electric motor starting in proportion simultaneously, and the frequency during electric motor starting is low more, and motor speed is just low more, and mechanical shock is more little.Frequency is low to moderate 1-2Hz, can thoroughly eliminate mechanical shock.Because supply voltage and frequency reduce simultaneously, motor gas-gap main flux ф keeps constant when quickening; Directly the moment control technology also can make the real component of motor stator, rotor current when quickening, keep constant simultaneously; Can know by formula three; Motor electromagnetic moment M can export high torque (HT) when quickening (that is: electromagnetic torque M did not only descend when motor electromagnetic moment M compared its normal operation during startup, increased to some extent on the contrary.) directly the moment control technology can make the real component of motor stator, rotor current when quickening, keep constant in; Reduce its idle component value; So just greatly reduce the starting current of motor; Make the starting current of motor be no more than 1.5 times of motor rated current usually, the electrical impact phenomenon when thoroughly having eliminated electric motor starting is very favourable to electric equipment.
Description of drawings
For the content that makes the utility model is more clearly understood, below basis specific embodiment and combine accompanying drawing, the utility model is done further detailed explanation, wherein
Fig. 1 is the structural representation of the mine flameproof and intrinsic safety type AC converter among the embodiment;
Fig. 2 is the sectional structure chart of the mine flameproof and intrinsic safety type AC converter among the embodiment.
Embodiment
See Fig. 1-2; The mine flameproof and intrinsic safety type AC converter of present embodiment; It comprises: the main electrical scheme chamber 1 and the main chamber 2 that are provided with up and down are provided with a plurality of major loop inlet wire binding posts, a plurality of major loop outlet binding post and a plurality of nine cores control binding post in the main electrical scheme chamber 1; The both sides in main electrical scheme chamber 1 are provided with main loop cabling introducing device, control cable introducing device, and the leading flank in main electrical scheme chamber 1 is provided with a plurality of control cable introducing devices; The leading section in main chamber 2 is provided with main chamber door 23, is provided with door-opening mechanism 24 between a side in main chamber 2 and the main chamber door 23, and the composition surface between main chamber 2 and the main chamber door 23 is a flameproof joint.
Said main chamber door 23 is provided with and is used to show that the operational factor of frequency converter and log are observation windows 21, and the lower end of observation window 21 is provided with in parameter and button, function setting button, start button, stop button is set, resets and change over switch 22 that two are used to select to move working method.
Be provided with frequency converter assembly, control circuit, control transformer, intrinsically safe circuit plate, isolating switch and vacuum contactor in the said main chamber 2.
This frequency converter has three kinds of operational modes available:
Mode one: varying frequency starting converting operation
This mode is a normal operating mode, and starting torque is big, does not have machinery, electrical impact, and mechanical characteristics of motor is adjustable.KM2 is closed, and KM1 breaks off.
Mode two: varying frequency starting power frequency operation
Under this mode, starting torque is big, does not have machinery, electrical impact.
Frequency converter is received initiating signal and is started by setup parameter, and motor begins to start under Frequency Converter Control, and after motor reached rated speed, frequency converter quit work, and KM2 breaks off, and after 1 second of delaying time again, KM1 is closed, motor operation under KM1 control.
Mode three: (the direct operation under the frequency converter failure situation) bypass operation
After frequency converter breaks down, can adopt this kind operational mode.
At this moment KM2 breaks off, directly control KM1 deciliter, the operation of control motor.
According to on-site actual situations, select a kind of working method through the working mode selection switch.
Obviously, the foregoing description only be for explain clearly that the utility model does for example, and be not to be qualification to the execution mode of the utility model.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here need not also can't give exhaustive to all execution modes.And conspicuous variation that these spirit that belong to the utility model are extended out or change still are among the protection range of the utility model.
Claims (3)
1. mine flameproof and intrinsic safety type AC converter; It is characterized in that comprising: the main electrical scheme chamber (1) and main chamber (2) that are provided with up and down are provided with a plurality of major loop inlet wire binding posts, a plurality of major loop outlet binding post and a plurality of nine cores control binding post in main electrical scheme chamber (1); The both sides in main electrical scheme chamber (1) are provided with main loop cabling introducing device, control cable introducing device, and the leading flank of main electrical scheme chamber (1) is provided with a plurality of control cable introducing devices;
The leading section in main chamber (2) is provided with main chamber door (23), is provided with door-opening mechanism (24) between a side of main chamber (2) and the main chamber door (23), and the composition surface between main chamber (2) and the main chamber door (23) is a flameproof joint.
2. a kind of mine flameproof and intrinsic safety type AC converter according to claim 1; It is characterized in that: said main chamber door (23) is provided with and is used to show that the operational factor of frequency converter and log are observation window (21), and the lower end of observation window (21) is provided with in parameter and button, function setting button, start button, stop button is set, resets and change over switch (22) that two are used to select to move working method.
3. a kind of mine flameproof and intrinsic safety type AC converter according to claim 2 is characterized in that: be provided with frequency converter assembly, control circuit, control transformer, intrinsically safe circuit plate, isolating switch and vacuum contactor in the said main chamber (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120217621 CN202103566U (en) | 2011-06-24 | 2011-06-24 | Mine explosion-proof intrinsic safety-typed alternative-current frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120217621 CN202103566U (en) | 2011-06-24 | 2011-06-24 | Mine explosion-proof intrinsic safety-typed alternative-current frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202103566U true CN202103566U (en) | 2012-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120217621 Expired - Fee Related CN202103566U (en) | 2011-06-24 | 2011-06-24 | Mine explosion-proof intrinsic safety-typed alternative-current frequency converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202103566U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103414319A (en) * | 2013-08-30 | 2013-11-27 | 电光防爆科技（上海）有限公司 | Mining explosive-proof and intrinsically-safe alternating-current converter |
-
2011
- 2011-06-24 CN CN 201120217621 patent/CN202103566U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103414319A (en) * | 2013-08-30 | 2013-11-27 | 电光防爆科技（上海）有限公司 | Mining explosive-proof and intrinsically-safe alternating-current 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120104 Termination date: 20170624 |