CN203307368U - Auxiliary boosting circuit of oxygen lances of converter - Google Patents
Auxiliary boosting circuit of oxygen lances of converter Download PDFInfo
- Publication number
- CN203307368U CN203307368U CN2013200608268U CN201320060826U CN203307368U CN 203307368 U CN203307368 U CN 203307368U CN 2013200608268 U CN2013200608268 U CN 2013200608268U CN 201320060826 U CN201320060826 U CN 201320060826U CN 203307368 U CN203307368 U CN 203307368U
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- lifting
- circuit
- standby
- lifting motor
- frequency transformer
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Abstract
The utility model relates to an auxiliary boosting circuit of oxygen lances of a converter. The auxiliary boosting circuit comprises a first boost-buck circuit and a second boost-buck circuit, wherein the first boost-buck circuit comprises a first frequency transformer and a first lifting motor, and the second boost-buck circuit comprises a second frequency transformer and a second lifting motor; the first lifting motor and the second lifting motor respectively control the lifting of a first oxygen lance and a second oxygen lance. The auxiliary boosting circuit also comprises a standby circuit which comprises a charger, a battery pack, a standby frequency transformer and a standby lifting motor. The mains supply is connected with the input end of the charger, and the output end of the charger is connected with the battery pack in parallel and is also connected with the input end of the standby frequency transformer. The output end of the standby frequency transformer is connected with the standby lifting motor, and the standby lifting motor controls the lifting of the first oxygen lance or the second oxygen lance through a transducer. The auxiliary boosting circuit has the advantages of simple structure, low cost and reliability in operation. When a mains supply circuit is in a power failure, the standby lifting circuit supplies an emergent lifting power supply for the oxygen lances to ensure the safe and reliable operation of the whole lifting power system of the oxygen lances.
Description
Technical field
The utility model relates to a kind of pilot circuit of metallurgy industry converter, particularly a kind of circuit of controlling the oxygen lance lifting in converter.
Background technology
The oxygen lance lifting circuit of traditional control converter generally comprises the first lifting circuit and the second lifting circuit of oxygen lance lifting, the first lifting circuit includes the first frequency transformer and the first lifting motor, and civil power forms and is electrically connected to the first lifting motor by the first frequency transformer; The second lifting circuit includes the second frequency transformer and the second lifting motor, and civil power forms and is electrically connected to the second lifting motor by the second frequency transformer; The first lifting motor and the second lifting motor are all controlled the lifting of oxygen rifle by switching platform; In each lifting circuit, all be furnished with charger, series of cells and isolating diode, as shown in Figure 2.The principle of work of the first lifting circuit is: when civil power is normal, the alternating-current of 380V is given the first frequency transformer and charger power supply simultaneously, the first frequency transformer is exported to the first lifting motor power supply, the first lifting motor is being controlled the lifting of oxygen rifle, charger is to batteries charging simultaneously, series of cells access frequency changer direct current bus end, between the two through diode-isolated, the effect of diode is to prevent that the DC bus-bar voltage of frequency transformer from adding to series of cells and damaging battery.The principle of work of the second lifting circuit is identical with the second lifting circuit.The first lifting circuit and the second lifting circuit are used alternatingly, and realize the control to oxygen lance lifting.When line failure, by series of cells separately, powered respectively respectively, guarantee when line failure, the lifting of oxygen rifle to be controlled reliably.The shortcoming of this circuit is:
1, be furnished with two cover chargers and series of cells as Power supply, more because of parts, failure rate is higher, thereby has reduced reliability of operation.
2, the series of cells busbar voltage is limited, and battery voltage is too high, and when civil power was normal, battery also can be to the frequency transformer bussed supply, and at this moment series of cells will be in discharge condition for a long time, affects battery quality; As too low as battery voltage, the low-voltage protection point that easily reaches frequency transformer during the municipal power failure battery discharge causes low-voltage variation.
Summary of the invention
The purpose of this utility model just is to provide a kind of service hoisting circuit of simple in structure, with low cost and reliable converter oxygen gun, it is to utilize two cover lifting circuit cycles alternately for the oxygen rifle, to provide the lifting drive power supply, when line generation power failure, by standby lifting circuit, provide emergent lifting electrical source of power for the oxygen rifle, guarantee whole oxygen lance lifting power system safe and reliable operation.
The purpose of this utility model is to realize by such technical scheme, it includes the first lifting circuit and the second lifting circuit of oxygen lance lifting, the first lifting circuit includes the first frequency transformer and the first lifting motor, and civil power forms and is electrically connected to the first lifting motor by the first frequency transformer; The second lifting circuit includes the second frequency transformer and the second lifting motor, and civil power forms and is electrically connected to the second lifting motor by the second frequency transformer; The first lifting motor and the second lifting motor are controlled respectively the lifting of the first oxygen rifle, the second oxygen rifle, also include a stand-by circuit, stand-by circuit includes charger, series of cells, standby variable frequency device and standby lifting motor, civil power is connected with the charger input terminus, the charger output terminal also is connected to series of cells, this output terminal also is connected with standby variable frequency device input terminus, standby variable frequency device output terminal is connected with standby lifting motor, and standby lifting motor is by the lifting of convertor controls the first oxygen rifle or the second oxygen rifle.
The principle of work of the first lifting circuit is: the alternating-current of 380V drives the first lifting motor work through the first frequency transformer, and the first lifting motor is being controlled the lifting of the first oxygen rifle.The principle of work of the second lifting circuit is identical with the first lifting circuit.Two cover circuit are all by switching platform, to control, and corresponding with converter; Only have the electric energy of circuit kit to export to oxygen rifle separately, in order to guarantee the normal operation of converter, used two cover circuit cycles to be used alternatingly, can guarantee like this reliability and the wearing quality of circuit.The principle of work of stand-by circuit is: when civil power is normal, the alternating-current of 380V is exported to batteries charging through charger, the dc bus that the series of cells bus accesses the standby variable frequency device simultaneously makes the standby variable frequency device be in holding state, when the first lifting circuit or the second lifting circuit break down, series of cells is powered to the standby variable frequency device, the output of standby variable frequency device drives standby lifting motor and rotates, and through umformer, drives the lifting of corresponding the first oxygen rifle or the second oxygen rifle, realizes the lifting of oxygen rifle is controlled.
Owing to having adopted technique scheme, the utlity model has following advantage:
1, three cover Power supplies, reliability is high;
2, stand-by circuit can be simultaneously standby as the first lifting circuit and the second lifting circuit, and standby variable frequency device and capacity motor are 1/4 of frequency transformer in the first lifting circuit or the second lifting circuit and motor, simultaneously, a set of series of cells, charger and frequency transformer have only been adopted, therefore, reduced significantly cost.
3, charger, series of cells, standby variable frequency device are three-in-one, simple in structure.
The accompanying drawing explanation
Accompanying drawing of the present utility model is described as follows.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of prior art.
In figure: 1. the first frequency transformer; 2. the first lifting motor; 3. the second frequency transformer; 4. the second lifting motor; 5. switching platform; 6. the first oxygen rifle; 7. charger; 8. series of cells; 9. standby variable frequency device; 10. standby lifting motor; 11. umformer; 12. converter; 13. the second oxygen rifle.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
As shown in Figure 1, the utility model includes the first lifting circuit and the second lifting circuit of oxygen lance lifting, and the first lifting circuit includes the first frequency transformer 1 and the first lifting motor 2, and civil power forms and is electrically connected to the first lifting motor 2 by the first frequency transformer 1; The second lifting circuit includes the second frequency transformer 3 and the second lifting motor 4, and civil power forms and is electrically connected to the second lifting motor 4 by the second frequency transformer 3; The first lifting motor 2 and the second lifting motor 4 are controlled respectively the lifting of the first oxygen rifle 6, the second oxygen rifle 13; Also include a stand-by circuit, stand-by circuit includes charger 7, series of cells 8, standby variable frequency device 9 and standby lifting motor 10, civil power is connected with charger 7 input terminuss, 7 device output terminals be connected to series of cells 8 charge, this output terminal also is connected with standby variable frequency device 9 input terminuss, standby variable frequency device 9 output terminals are connected with standby lifting motor 10, and standby lifting motor 10 is controlled the lifting of the first oxygen rifle 6 or the second oxygen rifle 13 by umformer 11.
The principle of work of the first lifting circuit is: the alternating-current of 380V drives the first lifting motor 2 work through the first frequency transformer 1, and the first lifting motor 2 is being controlled the lifting of the first oxygen rifle 6.The principle of work of the second lifting circuit is identical with the first lifting circuit.Two cover circuit are all by switching platform 5, to control, and corresponding with converter 12; Only have the electric energy of circuit kit to export to oxygen rifle separately, in order to guarantee the normal operation of converter 12, used two cover circuit cycles to be used alternatingly, can guarantee like this reliability and the wearing quality of circuit.The principle of work of stand-by circuit is: when civil power is normal, the alternating-current of 380V is exported to series of cells 8 chargings through charger 7, the dc bus that series of cells 8 buses access standby variable frequency device 9 simultaneously makes standby variable frequency device 9 be in holding state, when the first lifting circuit or the second lifting circuit break down, series of cells 8 gives the standby variable frequency device 9 power supplies, 9 outputs of standby variable frequency device drive standby lifting motor 10 and rotate, through umformer 11, drive the lifting of corresponding the first oxygen rifle 6 or the second oxygen rifle 13, realize the lifting of oxygen rifle is controlled.
Claims (1)
1. the service hoisting circuit of a converter oxygen gun, include the first lifting circuit and the second lifting circuit of oxygen lance lifting, the first lifting circuit includes the first frequency transformer (1) and the first lifting motor (2), and civil power forms and is electrically connected to the first lifting motor (2) by the first frequency transformer (1), the second lifting circuit includes the second frequency transformer (3) and the second lifting motor (4), and civil power forms and is electrically connected to the second lifting motor (4) by the second frequency transformer (3), the first lifting motor (2) and the second lifting motor (4) are controlled respectively the first oxygen rifle (6), the lifting of the second oxygen rifle (13), it is characterized in that: also include a stand-by circuit, stand-by circuit includes charger (7), series of cells (8), standby variable frequency device (9) and standby lifting motor (10), civil power is connected with charger (7) input terminus, charging (7) device output terminal also is connected to series of cells (8), this output terminal also is connected with standby variable frequency device (9) input terminus, standby variable frequency device (9) output terminal is connected with standby lifting motor (10), standby lifting motor (10) is controlled the lifting of the first oxygen rifle (6) or the second oxygen rifle (13) by umformer (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200608268U CN203307368U (en) | 2013-02-04 | 2013-02-04 | Auxiliary boosting circuit of oxygen lances of converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200608268U CN203307368U (en) | 2013-02-04 | 2013-02-04 | Auxiliary boosting circuit of oxygen lances of converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203307368U true CN203307368U (en) | 2013-11-27 |
Family
ID=49613590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013200608268U Expired - Lifetime CN203307368U (en) | 2013-02-04 | 2013-02-04 | Auxiliary boosting circuit of oxygen lances of converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203307368U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111082639A (en) * | 2019-12-13 | 2020-04-28 | 首钢京唐钢铁联合有限责任公司 | Pre-charging control method and system of frequency converter |
| CN111100966A (en) * | 2019-12-12 | 2020-05-05 | 首钢京唐钢铁联合有限责任公司 | Converter sublance lifting control system and method |
| CN111707387A (en) * | 2020-06-24 | 2020-09-25 | 广东韶钢松山股份有限公司 | Refining furnace temperature measuring gun lifting device and method |
-
2013
- 2013-02-04 CN CN2013200608268U patent/CN203307368U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111100966A (en) * | 2019-12-12 | 2020-05-05 | 首钢京唐钢铁联合有限责任公司 | Converter sublance lifting control system and method |
| CN111100966B (en) * | 2019-12-12 | 2021-11-19 | 首钢京唐钢铁联合有限责任公司 | Converter sublance lifting control system and method |
| CN111082639A (en) * | 2019-12-13 | 2020-04-28 | 首钢京唐钢铁联合有限责任公司 | Pre-charging control method and system of frequency converter |
| CN111082639B (en) * | 2019-12-13 | 2021-08-20 | 首钢京唐钢铁联合有限责任公司 | Pre-charging control method and system of frequency converter |
| CN111707387A (en) * | 2020-06-24 | 2020-09-25 | 广东韶钢松山股份有限公司 | Refining furnace temperature measuring gun lifting device and method |
| CN111707387B (en) * | 2020-06-24 | 2022-06-10 | 广东韶钢松山股份有限公司 | Refining furnace temperature measuring gun lifting device and method |
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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: 20131127 |
|
| CX01 | Expiry of patent term |