CN2603571Y - Explosio-proof frequency transformer - Google Patents
Explosio-proof frequency transformer Download PDFInfo
- Publication number
- CN2603571Y CN2603571Y CNU032286066U CN03228606U CN2603571Y CN 2603571 Y CN2603571 Y CN 2603571Y CN U032286066 U CNU032286066 U CN U032286066U CN 03228606 U CN03228606 U CN 03228606U CN 2603571 Y CN2603571 Y CN 2603571Y
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- China
- Prior art keywords
- explosion
- proof frequency
- transducer
- frequency converter
- module
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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
An anti-explosion transducer includes a transducer, an electrical control device and flameproof cabinet. The inverse IGBT tubes of the transducer in series form each phase inverse circuit and the inverse circuit contains an equalizer circuit, the DC part is of a thin sheet bus structure. The rectifying thyristor module and the inverse IGBT tube module of the transducer are installed to the base plate of the thermal tube radiator seat. The utility model has advantages of simple structure, small occupation, good heat radiation and low cost.
Description
The utility model relates to a kind of explosion-proof frequency converter, is used for the control of inflammable and explosive environment motor, belongs to explosion-proof control panel.
Along with advancing by leaps and bounds of China's science and technology, the motor frequency conversion control technology has been widely used in fields such as machinery, metallurgy, light textile and household electrical appliance.But because frequency-converting control device adopts high-power electric semiconductor as rectification and inversion element, its heat dissipation problem hampers Application of frequency conversion technique in inflammable and explosive environmental areas such as mine, petrochemical industry always, and these fields are being extensive use of high-power high-tension large-size machine, the full torque starting of wherein most of requirement, varying load operation, soft soft stopping, if adopt frequency conversion control technique, these demands all can satisfy, and have energy-saving and cost-reducing advantage.
The utility model is intended to solve rectification and the heat dissipation problem of inversion element in explosion-resistant enclosure, and a kind of explosion-proof type frequency-variable controller that is used for inflammable and explosive environment such as mine, chemical industry is provided.
To achieve these goals, the technical solution of the utility model is: a kind of explosion-proof frequency converter comprises converter plant, electrical control gear and flameproof cabinet.The inversion IGBT pipe of described converter plant adopts the series connection form to form every phase inverter circuit; Comprise an equalizer circuit in the described series IGBT pipe inverter circuit; The direct current component of described converter plant adopts the thin board type bus structure; The rectification thyristor module of described converter plant and inversion IGBT tube module are installed on the heat-pipe radiator seat board.
Advantage of the present utility model: 1) adopt the direct serial connection technology of IGBT, the volume of frequency converter is little, in light weight, cost is low; 2) adopt the thin board type bus structure, stray inductance is little, the reliability height; 3) radiating condition is good.Owing to adopt low-voltage, small-power inverter thyristor serial connection technology, can form multiple spot, thermal source low in calories distributes, it is even relatively that each heat pipe of heat-pipe radiator is heated, and is very advantageous in quick heat radiating; Adopt the thin board type dc bus can effectively suppress to grow inductance between circuit, make each phase inversion module can separate installation, cause between each heat-pipe radiator heat to be interfered and reduce, also help the radiator operate as normal.4) flameproof cabinet intensity height.According to the explosion-proof criteria requirement, the Flameproof box inner chamber must be airtight and can be born the explosive force of certain energy, and casing adopts the steel plate welding to make usually, and heating panel adopts the higher copper coin of thermal conductivity to make more, but the intensity of copper coin is poor than steel plate, can not monoblock make explosion-proof shell coaming plate usefulness in large area.Inversion module is separated installation, can make the heat radiation copper coin correspondingly be divided into plurality of small blocks, be nested between the steel coaming plate, so both solved heat dissipation problem, can satisfy the Flameproof box requirement of strength again.
Fig. 1 is the structural representation of the utility model explosion-proof frequency converter.
Fig. 2 is the utility model explosion-proof frequency converter main circuit schematic diagram.
The utility model is described in further detail below in conjunction with embodiment.Explosion-proof frequency converter shown in Figure 1 is made up of converter plant, electrical control gear and flameproof cabinet, wherein converter plant comprises rectification module 6, filter capacitor 5, thin board type capacitive electrode bus 4, inversion module 3 and out put reactor 9, and flameproof cabinet comprises steel sheel 7, copper heating panel 2 and radiator 8; In the main circuit electrical schematic diagram shown in Figure 2, the IGBT power component of inversion module 3 is composed in series high-voltage bridge arms in twos, then output.
During work, power frequency supply enters thin board type capacitive electrode bus 4 through rectification module 6 rectifications, after filter capacitor 5 copped waves, sends into the electrode tip of inversion module 6 again, and the variable frequency power supply after the inversion is exported after out put reactor 9 filtering again.
Because rectification module and inversion module all are directly installed on the copper heating panel 2, the hear rate that produces when above-mentioned module is worked is spread out of by radiator 8 through the copper heating panel, the hear rate that can suppress these modules is basically imported in the flameproof cabinet, is operated in the IGBT that guarantees inversion module in the temperature environment of regulation.
Claims (4)
1. an explosion-proof frequency converter comprises converter plant, electrical control gear and flameproof cabinet, it is characterized in that: the inversion IGBT pipe of described converter plant adopts the series connection form to form every phase inverter circuit.
2. explosion-proof frequency converter as claimed in claim 1 is characterized in that: comprise an equalizer circuit in the described series IGBT pipe inverter circuit.
3. explosion-proof frequency converter as claimed in claim 1 or 2 is characterized in that: the direct current component of described converter plant adopts the thin board type bus structure.
4. explosion-proof frequency converter as claimed in claim 3 is characterized in that: the rectification thyristor module of described converter plant and inversion IGBT tube module are installed on the heat-pipe radiator seat board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032286066U CN2603571Y (en) | 2003-01-29 | 2003-01-29 | Explosio-proof frequency transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032286066U CN2603571Y (en) | 2003-01-29 | 2003-01-29 | Explosio-proof frequency transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2603571Y true CN2603571Y (en) | 2004-02-11 |
Family
ID=34164420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU032286066U Expired - Fee Related CN2603571Y (en) | 2003-01-29 | 2003-01-29 | Explosio-proof frequency transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2603571Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102075067A (en) * | 2011-03-11 | 2011-05-25 | 阳光电源股份有限公司 | Module power unit of wind power converter |
-
2003
- 2003-01-29 CN CNU032286066U patent/CN2603571Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102075067A (en) * | 2011-03-11 | 2011-05-25 | 阳光电源股份有限公司 | Module power unit of wind power converter |
| CN102075067B (en) * | 2011-03-11 | 2013-04-03 | 阳光电源股份有限公司 | Module power unit of wind power converter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Shanghai Sendy Automation Technology Co., Ltd. Document name: Notice of procedure contract |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |