CN201414106Y - Frequency converter - Google Patents
Frequency converter Download PDFInfo
- Publication number
- CN201414106Y CN201414106Y CN2009200263730U CN200920026373U CN201414106Y CN 201414106 Y CN201414106 Y CN 201414106Y CN 2009200263730 U CN2009200263730 U CN 2009200263730U CN 200920026373 U CN200920026373 U CN 200920026373U CN 201414106 Y CN201414106 Y CN 201414106Y
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- China
- Prior art keywords
- frequency
- variable
- frequency converter
- radiator
- main control
- Prior art date
- 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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- Dc-Dc Converters (AREA)
- Inverter Devices (AREA)
Abstract
A frequency converter comprises a shell, a control board, a frequency conversion input end, a frequency conversion output end, a built-in main control circuit board, a circuit board, a radiator and afrequency-converter power device; the main control circuit board and the circuit board are fully closed and are completely isolated from the radiator, and the frequency-converter power device and theradiator are mounted in an independent heat-dissipating channel. The frequency converter effectively solves the following problems: the impact of high smoke and dust concentration, high environmentaltemperature and traveling shock in the coking industry on the frequency converter and the high failure rate and easy burnout of the frequency converter caused by the fluctuation of power voltage.
Description
Technical field
The utility model relates to a kind of device that is used for frequency translation, is specifically related to a kind of variable-frequency governor.
Background technology
Existing frequency converter, all be that radiator, power model, drive plate, master control borad are installed in the same shell, and dispel the heat by fan, but when in the bigger environment of flue dust, carrying out work, airborne flue dust can cause corrosion to electronic circuit board, cause that frequency converter failure increases, the shortening in useful life, further can cause the radiating insulating function reduction, these all can have a strong impact on the production and the operation of enterprise.
Variable-frequency governor need be in the flue dust environment for a long time works, and also will face high 10～18 degrees centigrade test of ambient temperature on year-on-year basis; Integrated smoke and dust garage is walked on the furnace roof fixed guide, the high speed rotating of the levelness of guide rail, the error of perpendicularity, gravitation blower fan, all can cause the vibrations of variable-frequency governor self; Integrated smoke and dust car, coal loading, smoke conduction car are to have overhead transmission line to provide power supply through the slip guide block, frequency converter must be installed in coal loading, smoke conduction car or the dust-removing vehicle, because the influence of flue dust, vibrations, humidity, voltage fluctuation certainly will threaten the frequency converter safe operation.Because the characteristics of coking industry and special operational environment, the variable-frequency governor that each manufacturer of present domestic frequency converter produces still is difficult to adapt to the particular surroundings of coking industry.
Summary of the invention
The purpose of this utility model is the deficiencies such as influence that are subject to flue dust, vibrations, humidity, voltage fluctuation at existing variable-frequency governor, and a kind of variable-frequency governor of the influence of a kind of preventing dust, against shock, moisture proof, anti-voltage fluctuation is provided.
The purpose of this utility model realizes by following technological means: a kind of variable-frequency governor includes shell, control board, frequency conversion input, frequency conversion output; With built-in main control board, wiring board, radiator, frequency converter electrical device; Described main control board and wiring board are set to totally-enclosed mode, are set to complete isolated form with radiator, and described frequency converter electrical device and radiator are installed and be arranged in the independent heat dissipation channel.
The bottom of described shell also is provided with the buffer unit of against shock.
Described buffer unit is set to spring or is set to cushion rubber bumper.
Described shell is provided with the dust superficial layer of workmanship of spraying plastics of one deck.
Described main control board and wiring board are set to the low inductance overall structure of laminated dc bus.
Described wiring board is set to three anti-insulation systems through the anti-vibration processing.
Compared with prior art the utlity model has following tangible advantage: 1, the influence of this variable-frequency governor preventing dust, against shock, moisture proof, anti-voltage fluctuation, solved effectively that the coking industry dust concentration is big, ambient temperature is high, the walking vibrations to the impact of frequency converter, and frequency converter failure rate height that mains fluctuations caused, easily burn, have a strong impact on the passive situation that coke oven is produced.2, this variable-frequency governor has higher stability and quicker response, can realize multiple intelligent controls such as automated torque promotes, slip compensation automatically, automatic voltage adjustment, automatic energy saving operation, have the precision height, characteristics such as noise is low, torque is big, dependable performance.
Description of drawings
Fig. 1 is an external form schematic diagram of the present utility model;
Fig. 2 is an internal module structural representation of the present utility model;
Fig. 3 is a frequency converter fundamental diagram of the present utility model.
Among the figure, 1-shell, 2-buffer unit.
Embodiment
The present invention is described in further detail below in conjunction with description of drawings and embodiment:
A kind of variable-frequency governor as depicted in figs. 1 and 2 includes shell 1, control board, frequency conversion input, frequency conversion output; With built-in main control board, wiring board, radiator, frequency converter electrical device; Described main control board and wiring board are set to totally-enclosed mode, are set to complete isolated form with radiator, and independently heat dissipation channel is arranged, and install in independent heat dissipation channel and are provided with frequency converter electrical device and radiator.Preferably resolve the intrusion of flue dust, solved the heat radiation that frequency converter is worked for a long time under hot environment, be convenient to simultaneously finish at short notice frequency converter is carried out dedusting, cleaning is safeguarded.
Described shell 1 is provided with the dust superficial layer of workmanship of spraying plastics of one deck.For eliminating the electric fault that vibrations bring to frequency converter, the bottom of described shell 1 also is provided with the buffer unit 2 of against shock, and described buffer unit 2 is set to spring or is set to cushion rubber bumper.All wiring boards are handled through high temperature resistant, high pressure resistant, moistureproof three anti-insulation and anti-vibration, and reliability is higher.
The wide voltage design of normal operation and the space vector of voltage control mode of optimizing when as shown in Figure 3, described frequency converter input is set to allow three-phase voltage 380V-75%～380V+120%; Described frequency conversion output end voltage is set to the voltage of adjustable three-phase 40%～100%.Described main control board and wiring board are set to the low inductance overall structure of laminated dc bus.Actual conditions according to the easy fluctuation of slip supply power voltage; adopt the design of wide voltage; the operating mode of voltage fluctuation when better adapting to the operation of walking dust-removing vehicle; simultaneously high-power gravitation blower fan is carried out soft start, soft stop and protected the normal operation of equipment also to reduce impact, and can eliminate influence the miscellaneous equipment operate as normal to line voltage.
Input three phase mains 380V-75%～380V+120% imports main control board, promptly passes through rectification circuit and filter circuit successively, and filter circuit can electrochemical capacitor, filtering, absorption release energy; Then; filter circuit a road through power supply with the maintenance circuit be defeated by CPU; PWM control; Switching Power Supply; simultaneously; the single-chip microcomputer of Keyboard Control; promptly also signal is defeated by CPU through the single-chip microcomputer of serial communication control; PWM control; Switching Power Supply; respectively through 12 groups of drive signals; the control power supply; guard signal; 6 groups of driving powers; controlling drive circuit; signal feedback; level conversion; the driver circuit plate that photoelectricity is isolated; be defeated by the signal feedback wiring board; the signal feedback wiring board also is defeated by on another road together with filter circuit; after the signal feedback wiring board was handled, as output, the voltage of promptly adjustable three-phase 40%～100% passed to motor.
The utility model designs at the particular surroundings of present coking industry, is widely used in the frequency conversion speed-adjusting system of integrated walking dust-removing vehicle, wet method, dry method ground station for dust removal blower fan.
This frequency converter is compared with domestic similar frequency converter product, it has effectively solved, and the coking industry dust concentration is big, ambient temperature is high, walking vibrations to the impact of frequency converter, and frequency converter failure rate height that mains fluctuations caused, easily burn, have a strong impact on the passive situation that coke oven is produced.
Claims (6)
1. a variable-frequency governor includes shell, control board, frequency conversion input, frequency conversion output; With built-in main control board, wiring board, radiator, frequency converter electrical device; It is characterized in that: described main control board and wiring board are set to totally-enclosed mode, are set to complete isolated form with radiator, and described frequency converter electrical device and radiator are installed and be arranged in the independent heat dissipation channel.
2, a kind of variable-frequency governor according to claim 1, it is characterized in that: the bottom of described shell also is provided with the buffer unit of against shock.
3, a kind of variable-frequency governor according to claim 2 is characterized in that: described buffer unit is set to spring or is set to cushion rubber bumper.
4, a kind of variable-frequency governor according to claim 1 and 2 is characterized in that: described shell is provided with the dust superficial layer of workmanship of spraying plastics of one deck.
5, a kind of variable-frequency governor according to claim 1 is characterized in that: described main control board and wiring board are set to the low inductance overall structure of laminated dc bus.
6, a kind of according to claim 1 or 5 variable-frequency governor is characterized in that: described wiring board is set to three anti-insulation systems through the anti-vibration processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200263730U CN201414106Y (en) | 2009-05-25 | 2009-05-25 | Frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200263730U CN201414106Y (en) | 2009-05-25 | 2009-05-25 | Frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201414106Y true CN201414106Y (en) | 2010-02-24 |
Family
ID=41715985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200263730U Expired - Fee Related CN201414106Y (en) | 2009-05-25 | 2009-05-25 | Frequency converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201414106Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102951450A (en) * | 2012-11-15 | 2013-03-06 | 中国瑞林工程技术有限公司 | High-temperature smoke dust conveying system and high-temperature smoke dust conveying method |
-
2009
- 2009-05-25 CN CN2009200263730U patent/CN201414106Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102951450A (en) * | 2012-11-15 | 2013-03-06 | 中国瑞林工程技术有限公司 | High-temperature smoke dust conveying system and high-temperature smoke dust conveying method |
| CN102951450B (en) * | 2012-11-15 | 2015-03-18 | 中国瑞林工程技术有限公司 | High-temperature smoke dust conveying system and high-temperature smoke dust conveying method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100224 Termination date: 20100525 |