CN101488673A - DC electric power system used for converter accident tilting, and oxygen sublance accident lifting - Google Patents
DC electric power system used for converter accident tilting, and oxygen sublance accident lifting Download PDFInfo
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- CN101488673A CN101488673A CNA2009100463587A CN200910046358A CN101488673A CN 101488673 A CN101488673 A CN 101488673A CN A2009100463587 A CNA2009100463587 A CN A2009100463587A CN 200910046358 A CN200910046358 A CN 200910046358A CN 101488673 A CN101488673 A CN 101488673A
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- accident
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- power supply
- sublance
- oxygen
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Abstract
The invention relates to a DC electrical source power system which is used for tilting converter accident and promoting oxygen sublance accident. The power system adopts an AC frequency conversion speed regulating device and is connected with a rectifier to convert the alternating current into direct current by a public DC bus; a plurality of inverters are hung under the DC bus and respectively drive motors connected with the inverters. A DC electrical source is connected with the DC bus of the inverters by a high-power diode. When the electrical source is normal, the DC electrical source does not discharge towards the DC bus; when the normal electrical source is in failure, the voltage of the DC bus is reduced to be lower than the design voltage of the DC electrical source, the diode is conducted, and the DC electrical source discharges towards the DC bus; when the voltage of the DC bus is maintained to be constant, the inverters still work normally, thus tilting converter accident and promoting oxygen sublance accident. The invention adopts the DC electrical source as a power source when the accidents happen, so as to simplify the mechanical design, lower the price and reduce the maintaining workload.
Description
Technical field
The present invention relates to the converter of metallurgy industry, the DC power supply dynamical system that particularly a kind ofly be used for that the converter accident is fascinated, oxygen sublance accident promotes.
Background technology
Have all in the domestic and international large and medium-sized converter at present that the converter accident is fascinated, oxygen sublance accident elevator system, the power that is adopted is mainly:
One, the converter accident employing hydraulic system of fascinating, oxygen rifle, sublance accident promote and adopt air motor.
Two, converter accident is fascinated and oxygen rifle, sublance accident promote and all adopt air motor.
The major defect of these two kinds of power schemes is:
1, no matter adopt which kind of power, converter inclining and oxygen sublance elevating mechanism transmission reduction box all will adopt nonstandard design, and design is comparatively complicated with manufacturing.
2, because the characteristic of the potential energy load of issuable negative moment of converter and oxygen sublance, when design hydraulic pressure and pneumatic system, must realize following function with hydraulic pressure or pneumatic element: set up moment during startup earlier, open band-type brake again, close earlier when stopping band-type brake, after stop the hydropneumatic motor, so gas circuit or Hydraulic Circuit Design complexity, the element that adopts is many, is easy to generate fault.
3, if two converters are arranged, then every converter all will design the hydropneumatic emergency system respectively.
4, hydraulic pump, air motor and hydropneumatic components cost an arm and a leg.
5, must routine test hydraulic pressure or pneumatic system, so that guarantee under the accident condition can operate as normal, like this, the workload of regular maintenance is big.
Summary of the invention
In order to solve above shortcoming and problem, task of the present invention provides a kind of DC power supply dynamical system that the converter accident is fascinated, oxygen sublance accident promotes that is used for, and adopts DC power supply as the converter accident is fascinated, oxygen sublance accident promotes power.
Technical solution of the present invention is as follows:
The DC power supply dynamical system that a kind ofly be used for that the converter accident is fascinated, oxygen sublance accident promotes, converter inclining, oxygen sublance promote and adopt AC frequency control apparatus, and the connection rectifier is converted to direct current with alternating current, pass through common DC bus, this dc bus is hung several inverters down, and each inverter drives continuous motor respectively;
DC power supply links to each other with the dc bus of inverter by a heavy-duty diode;
When power supply just often, DC power supply can not discharged to dc bus, when fault of normal power supply, DC bus-bar voltage descends, when dropping to the design voltage that is lower than DC power supply, and diode current flow, DC power supply is discharged to dc bus, it is constant to keep DC bus-bar voltage, and inverter is operate as normal still, and the accident of finishing converter is fascinated and the accident of oxygen sublance promotes.
The voltage of described DC power supply designs lowlyer than DC bus-bar voltage.
During described DC power supply dynamical system operate as normal, the charger of DC power supply carries out floating charge to storage battery.
The main feature and the advantage of the DC power supply dynamical system that of the present inventionly be used for that the converter accident is fascinated, oxygen sublance accident promotes are as follows:
Power source when 1, adopting DC power supply as accident has been simplified Machine Design thus widely, and the reduction box in the design can be selected the reduction box of standard for use.
2, owing to adopt the direct current emergency power supply, so the design sequence when all sequence of movement is all according to normal power source during accident is carried out.
3, a cover DC power supply can be used as the emergency power supply of two converters.
4, DC power supply low price, installation and debugging easily, its price only is 1/3rd of hydraulic pressure or a pneumatic scheme.
5, used storage battery is maintenance-free battery, and DC power supply employing system controlled by computer, and the attendant can monitor the state of DC power supply at any time, does not almost safeguard the workload of aspect.
Therefore, adopt the DC power supply method to fascinate and the accident of oxygen sublance is very suitable promoting as the converter accident.
Description of drawings
Accompanying drawing is a kind of line map that is used for the DC power supply dynamical system that the converter accident is fascinated, oxygen sublance accident promotes of the present invention.
Embodiment
Referring to accompanying drawing, the present invention is a kind of DC power supply dynamical system that the converter accident is fascinated, oxygen sublance accident promotes that is used for.Converter inclining, oxygen sublance promote and adopt AC frequency control apparatus, and adopt the scheme of common DC bus.
The AC power of system connects rectifier 1, and alternating current is converted to direct current, and by common DC bus 2, this dc bus is hung several inverters 3 for 2 times, and each inverter 3 drives the motor 4 that links to each other respectively.Number in the figure 41 is a tilting motor, and 42 is No. two tilting motor, and 43 is No. three tilting motor, and 44 is No. four tilting motor, and 45 is the first oxygen rifle, and 46 is the second oxygen rifle, and 47 is sublance.
DC power supply 5 links to each other with the dc bus 2 of inverter by a heavy-duty diode.The voltage of DC power supply 5 designs more lower slightlyly than dc bus 2 voltages, and as shown in FIG., the voltage of DC power supply 5 is 500V, and dc bus 2 voltages then are 510V.Dc bus 2 can connect an above brake resistance 6.
When power supply just often, DC power supply can not discharged to dc bus; When fault of normal power supply, DC bus-bar voltage can descend, when dropping to the design voltage that is lower than DC power supply, diode current flow, DC power supply is discharged to dc bus, and it is constant to keep DC bus-bar voltage, but inverter is operate as normal still, and the accident of finishing converter is fascinated and the accident of oxygen sublance promotes.
During DC power supply dynamical system operate as normal, the charger of DC power supply carries out floating charge to storage battery.
Certainly, those skilled in the art in the present technique field will be appreciated that, the foregoing description only is to be used for illustrating the present invention, and be not as limitation of the invention, as long as in connotation scope of the present invention, all will drop in the scope of claim of the present invention conversion, the modification of the foregoing description.
Claims (3)
1. one kind is used for the DC power supply dynamical system that the converter accident is fascinated, oxygen sublance accident promotes, it is characterized in that, converter inclining, oxygen sublance promote and adopt AC frequency control apparatus, and the connection rectifier is converted to direct current with alternating current, pass through common DC bus, this dc bus is hung several inverters down, and each inverter drives continuous motor respectively;
DC power supply links to each other with the dc bus of inverter by a heavy-duty diode;
When power supply just often, DC power supply can not discharged to dc bus, when fault of normal power supply, DC bus-bar voltage descends, when dropping to the design voltage that is lower than DC power supply, and diode current flow, DC power supply is discharged to dc bus, it is constant to keep DC bus-bar voltage, and inverter is operate as normal still, and the accident of finishing converter is fascinated and the accident of oxygen sublance promotes.
2. the DC power supply dynamical system that according to claim 1ly be used for that the converter accident is fascinated, oxygen sublance accident promotes is characterized in that the voltage of described DC power supply designs lowlyer than DC bus-bar voltage.
3. the DC power supply dynamical system that according to claim 1ly be used for that the converter accident is fascinated, oxygen sublance accident promotes is characterized in that, during described DC power supply dynamical system operate as normal, the charger of DC power supply carries out floating charge to storage battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100463587A CN101488673A (en) | 2009-02-19 | 2009-02-19 | DC electric power system used for converter accident tilting, and oxygen sublance accident lifting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100463587A CN101488673A (en) | 2009-02-19 | 2009-02-19 | DC electric power system used for converter accident tilting, and oxygen sublance accident lifting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101488673A true CN101488673A (en) | 2009-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100463587A Pending CN101488673A (en) | 2009-02-19 | 2009-02-19 | DC electric power system used for converter accident tilting, and oxygen sublance accident lifting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101488673A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102021268A (en) * | 2010-12-27 | 2011-04-20 | 中国恩菲工程技术有限公司 | Tilting control method of converter accidents |
| CN111668915A (en) * | 2020-05-19 | 2020-09-15 | 株洲航发动科南方燃气轮机有限公司 | Integrated low-voltage power distribution system applied to small and medium-sized generator sets |
-
2009
- 2009-02-19 CN CNA2009100463587A patent/CN101488673A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102021268A (en) * | 2010-12-27 | 2011-04-20 | 中国恩菲工程技术有限公司 | Tilting control method of converter accidents |
| CN111668915A (en) * | 2020-05-19 | 2020-09-15 | 株洲航发动科南方燃气轮机有限公司 | Integrated low-voltage power distribution system applied to small and medium-sized generator sets |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| ASS | Succession or assignment of patent right |
Owner name: BAOSTEEL ENGINEERING + TECHNOLOGY GROUP CO., LTD Free format text: FORMER OWNER: BAOGANG ENGINEERING TECHN CO., LTD., SHANGHAI Effective date: 20100720 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20100720 Address after: 201900 Shanghai city Baoshan District Tieli Road No. 2510 Applicant after: Baosteel Engeneering &Technology Group Co., Ltd. Address before: 201900 Shanghai city Baoshan District Tieli Road No. 2510 Applicant before: Shanghai Baogang Engineering Technology Co., Ltd. |
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20090722 |