CN2333117Y - Low inductance content starter of medium-frequency machine - Google Patents
Low inductance content starter of medium-frequency machine Download PDFInfo
- Publication number
- CN2333117Y CN2333117Y CN 98219282 CN98219282U CN2333117Y CN 2333117 Y CN2333117 Y CN 2333117Y CN 98219282 CN98219282 CN 98219282 CN 98219282 U CN98219282 U CN 98219282U CN 2333117 Y CN2333117 Y CN 2333117Y
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- CN
- China
- Prior art keywords
- medium
- model
- utility
- frequency machine
- low inductance
- 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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Abstract
The utility model relates to a low inductance content starter of a medium-frequency machine. The utility model is characterized in that an inductance coil L1 or L2 is connected in parallel with a switch. The utility model can be used for successfully starting a medium-frequency machine in any load, has the advantages of stable operation, strong anti-interference ability, energy saving, efficiency increasing, simple structure, convenient operation, etc., and can be used in metallurgy industry, machinery industry, etc.
Description
The utility model relates to medium frequency equipment and relates in particular to the medium frequency equipment starter.
At present, homemade medium frequency equipment exists (1) to improve its startability when working, and then effective power reduces; (2) improve its effective power, then the startability reduction is equal to topic.For addressing the above problem, people have also taked certain subsidy measure, as: adjust the road current flow angle before starting, recall to again after operation a period of time; Reduce the smelting furnace coil turn and start, when furnace temperature acquires a certain degree, shut down and drop into whole coils.These two kinds of measures have certain effect to startability and the effective power that improves medium frequency equipment, but have the following disadvantages: (1) starts quite difficult after stove is frozen in generation, especially during heavy load, can't start at all; (2) probability of success is low, and is improper when adjusting, when jumping machine fault occurring, and fragile controllable silicon; (3) complex operation.
The purpose of this utility model just provides a kind of new medium frequency equipment starter with low inductance startup.
The utility model is realized after (1) rectification in the inductor coil before the inversion in the following manner, one group of inductance coil place device one switch therein.Medium frequency equipment before starting closes switch, makes the inductance coil short circuit that switch is housed, and immediately switch is disconnected after the startup, full inductance operation.Like this, it is low to start inductance value than former its auto-excitation type during startup, and the DC pulse amount heightens after the rectification, and startability is good; (2) adjust the inductor air gap, because what the utility model was taked is that low inductance starts, only dropped into one group of inductance coil work when promptly starting, the inductor air gap can be transferred to minimum, inductance value heightens during operation, the DC pulse amount reduces, and the antijamming capability of inversion significantly improves, and the effective power of medium frequency equipment also is largely increased.
The utlity model has simple in structure, easy to operate, function admirable, can effectively change the medium frequency equipment startability.The advantage that also has energy efficiency simultaneously.
Below in conjunction with accompanying drawing the utility model is described in further detail.
Fig. 1 is the utility model structural representation
Two groups of coil L1 or L2 place at inductor 2.Install a switch 1, switch 1 is in parallel with L1 or L2.
Claims (1)
1, a kind of medium frequency equipment low inductance starter is characterized in that going up a switch (1) in parallel at the two groups of coil L1 or the L2 of inductor (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98219282 CN2333117Y (en) | 1998-08-17 | 1998-08-17 | Low inductance content starter of medium-frequency machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98219282 CN2333117Y (en) | 1998-08-17 | 1998-08-17 | Low inductance content starter of medium-frequency machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2333117Y true CN2333117Y (en) | 1999-08-11 |
Family
ID=33971405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98219282 Expired - Fee Related CN2333117Y (en) | 1998-08-17 | 1998-08-17 | Low inductance content starter of medium-frequency machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2333117Y (en) |
-
1998
- 1998-08-17 CN CN 98219282 patent/CN2333117Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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 |