CN104320039A - Drive control method and device of final dusting high-voltage motor of steel mill - Google Patents
Drive control method and device of final dusting high-voltage motor of steel mill Download PDFInfo
- Publication number
- CN104320039A CN104320039A CN201410614770.5A CN201410614770A CN104320039A CN 104320039 A CN104320039 A CN 104320039A CN 201410614770 A CN201410614770 A CN 201410614770A CN 104320039 A CN104320039 A CN 104320039A
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- Prior art keywords
- motor
- cabinet
- disconnecting link
- frequency converter
- water resistance
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- 238000010410 dusting Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 23
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 17
- 239000010959 steel Substances 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 238000002955 isolation Methods 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Control Of Multiple Motors (AREA)
Abstract
The invention discloses a drive control method and device of a final dusting high-voltage motor of a steel mill. When a frequency converter serves as main drive, an outgoing line of the frequency converter is connected with an inlet line of the motor, and a secondary line of the motor is in short connection in the working process. When the motor breaks down, the outgoing line of the frequency converter and the inlet line of the motor are disconnected, the power frequency is connected to the inlet line of the motor, the secondary line of the motor is connected with a water resistance cabinet, the resistance value of the water resistance is reduced through a pole plate of the water resistance cabinet, the running speed of the motor is increased, and when the running speed of the motor reaches the full gear, the secondary line of the motor is separated from the water resistance cabinet, and the secondary line of the motor is in short connection. The frequency converter is used for driving the final dusting high-voltage motor, the running speed of the final dusting high-voltage motor can be adjusted, the purpose of saving electric energy is achieved, and when the frequency converter serves as the main drive, the water resistance standby drive is added, and it is guaranteed that when the main drive breaks down, the high-voltage motor can normally run.
Description
Technical field
The present invention relates to the drived control field of steel mill high-tension motor, particularly relate to a kind of drived control method and apparatus of steel mill final dusting high-tension motor.
Background technology
final dusting is the flue dust utilizing large fan, cleaning shaft, on-the-spot dedusting valve trapping production scene generation, carries out the process equipment of gas cleaning through low pressure pulse bag filter.Large fan provides necessary draft for dust pelletizing system, and Fan Equipment is shut down and will directly be caused Environmental Protection at Steel Works index exceeding standard, and form environmental protection accident, serious meeting causes complete plant shutdown; Blower fan is again big power consumer simultaneously, and its power consumption Zhan Quan factory power consumption more than 60%, directly affects energy consumption index.
Former fan electromotor adopts Water resistance soft starting mode to drive, and blower fan cannot speed governing, causes serious waste of energy.For realizing economize on electricity object, transform motor driven as variable frequency control.Original like this water resistance will become useless equipment, cause scrapping electric equipment in advance, cost of idleness.Meanwhile, when the drive unit fault of final dusting high-tension motor, final dusting high-tension motor cannot normally run.
Summary of the invention
The present invention is directed to defect of the prior art, provide a kind of drived control method and apparatus of steel mill final dusting high-tension motor, the running speed realizing final dusting high-tension motor is adjustable, simultaneously for final dusting high-tension motor provides actuation redundancy system.
The technical solution adopted for the present invention to solve the technical problems is: a kind of drived control method of steel mill final dusting high-tension motor, the method comprises the following steps, 1) outlet of frequency converter is connected with motor lambda line, its secondary line short circuit in the motor course of work.2) if motor fault, cut off the connection between the outlet of frequency converter and motor lambda line, power frequency is accessed motor lambda line, motor secondary line connects with water resistance cabinet, by pole plate effect in water resistance cabinet, the resistance value of water resistance is reduced, the increasing motor speed of service, when motor operating speed reaches full gear, motor secondary line and water resistance cabinet disconnect, by motor secondary line short circuit.
By technique scheme, in described step 1), frequency converter is by disconnecting link K
1access 10KV high-tension electricity.
By technique scheme, described motor lambda line is by single-pole double throw isolation switch K
2switch between the outlet and power frequency of frequency converter.
By technique scheme, described step 2) in, motor secondary line is connected with water resistance cabinet by disconnecting link QS.
By technique scheme, described step 2) in, by motor secondary line short circuit, be specially motor secondary line and be connected with asterism cabinet by disconnecting link 2QF.
A driving control device for steel mill final dusting high-tension motor, this device comprises frequency converter, frequency converter switches cabinet, disconnecting link cabinet, soft-start cabinet, and wherein frequency converter switching cabinet comprises disconnecting link K
1, single-pole double throw isolation switch K
2, disconnecting link cabinet comprises disconnecting link QS
1with disconnecting link QS
2, QS
1not moved end asterism short circuit, soft-start cabinet comprises asterism cabinet, water resistance cabinet, isolation cabinet, disconnecting link 2QF, disconnecting link QS for asterism cabinet and water resistance cabinet being carried out isolating; The lambda line of frequency converter and disconnecting link K
1be connected, K
2not moved end be connected with the lambda line of motor, K
2moved end be connected with power frequency with the leading-out terminal of frequency converter respectively, the outlet of motor connects disconnecting link QS simultaneously
1with disconnecting link QS
2moved end, QS
2not moved end be connected with the not moved end of disconnecting link 2QF, disconnecting link QS simultaneously, the moved end of 2QF is connected with asterism cabinet, and the moved end of QS is connected with water resistance cabinet.
By technique scheme, also comprising programmable logic controller (PLC), switching the signal of the auxiliary point arranged in cabinet and disconnecting link cabinet and chain for safety closing for being received in frequency converter.
The beneficial effect that the present invention produces is: use transducer drive final dusting high-tension motor, the running speed realizing final dusting high-tension motor is adjustable, realize the object of saves energy, simultaneously with frequency converter for main driving time, increase water resistance driving for subsequent use, ensure that high-tension motor also can normally run when main driving is broken down.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the structural representation of the embodiment of the present invention;
Fig. 2 is frequency converter Electric Appliance Cabinet potential indicator and switching state indicator light schematic diagram;
Fig. 3 is the chain schematic diagram of safety closing.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As shown in Figure 1, for final dusting high-tension motor, under transducer drive mode, pass through K
1closed, K
2get to frequency conversion position, i.e. K
2moved end be connected with the leading-out terminal of frequency converter, simultaneously QS
1closed, QS
2disconnect, and the secondary line short circuit of motor, after high voltage source is closed a floodgate, frequency converter is in ready status, and the lambda line access 10KV high pressure of final dusting high-tension motor, clicking motor after starting can run according to command speed.
Under power frequency mode, pass through K
1disconnect, K
2get to power frequency position, i.e. K
2moved end be connected with power frequency, simultaneously QS
1disconnect, QS
2closed, by the secondary line of final dusting high-tension motor access water resistance system.After high voltage source is closed a floodgate, 2QF disconnects, and QS closes, motor secondary line asterism is opened (namely secondary line shunt contact disconnects), seals in water resistance, along with the action of water resistance pole plate, the resistance value of water resistance reduces, and motor operating speed progressively rises, after final resistance value zero, electrical motors is to full gear, QS disconnects simultaneously, and 2QF closes, and namely disconnects water resistance, motor secondary line is in short circuit state again, and motor full gear is run.
As shown in Figure 2, be the charged indicator light on the cabinet door of the driving control device of final dusting high-tension motor and switching state indicator light.When final dusting high-tension motor inlet wire access 10KV high pressure, charged flash lights, reminds high pressure to access, and forbids to operate disconnecting link everywhere.Switching state indicator light only has after frequency conversion or power frequency handover operation are correct, just can light, instruction current handoff state, reminds operating personnel to operate accordingly.
As shown in Figure 3, for the schematic diagram that the safety closing of driving control device necessity of final dusting high-tension motor is chain, the operation of high tension loop just can must be carried out when high voltage source inlet wire 10KV disconnects, switch cabinet at disconnecting link cabinet and frequency converter and be designed with auxiliary point, access PLC control system, i.e. programmable logic controller (PLC), only have when correct disconnecting link closes a floodgate or disconnection, auxiliary some signal is correct, just allows to carry out high pressure combined floodgate, guarantees Field Force and device security.When system is in transducer drive state, 1# fan frequency conversion status signal is 1, and the 1# fan operation trip protection signal introduced from disconnecting link cabinet is 0, and frequency converter allows high pressure to close a floodgate; When system is in power frequency state, 1# fan frequency conversion status signal is 0, and the 1# fan operation trip protection signal introduced from disconnecting link cabinet is 1, requires that air door is closed simultaneously, now allows power frequency high voltage to close a floodgate.
In the present embodiment, switch handle push rod designs one to one, the disconnecting link operated is needed in handoff procedure, the wedge mouth of its handle push rod is all unique, namely each disconnecting link all needs to insert corresponding correct handle push rod ability operational motion, emphasize that operating personnel confirm errorless rear proper operation, stop operate miss.
The driving control device of embodiment of the present invention steel mill final dusting high-tension motor, for realizing final dusting high-tension motor redundancy control system, need design disconnecting link frequency converter and power frequency operation mode to be isolated, design the switching that disconnecting link cabinet carries out motor secondary line simultaneously.Cabinet design K is switched at frequency converter
1, K
2two disconnecting links, K
1for responsible frequency converter inlet wire disconnecting link, K
2be responsible for switching between the leading-out terminal and power frequency of frequency converter.The driving control device of final dusting high-tension motor comprises frequency converter, frequency converter switches cabinet, disconnecting link cabinet, soft-start cabinet, and wherein frequency converter switching cabinet comprises disconnecting link K
1, single-pole double throw isolation switch K
2, disconnecting link cabinet comprises disconnecting link QS
1with disconnecting link QS
2, QS
1not moved end asterism short circuit, soft-start cabinet comprises asterism cabinet, water resistance cabinet, isolation cabinet, disconnecting link 2QF, disconnecting link QS for asterism cabinet and water resistance cabinet being carried out isolating; The lambda line of frequency converter and disconnecting link K
1be connected, K
2not moved end be connected with the lambda line of motor, K
2moved end be connected with power frequency with the leading-out terminal of frequency converter respectively, the outlet of motor connects disconnecting link QS simultaneously
1with disconnecting link QS
2moved end, QS
2not moved end be connected with the not moved end of disconnecting link 2QF, disconnecting link QS simultaneously, the moved end of 2QF is connected with asterism cabinet, and the moved end of QS is connected with water resistance cabinet.This device also comprises programmable logic controller (PLC), switches the signal of the auxiliary point arranged in cabinet and disconnecting link cabinet and chain for safety closing for being received in frequency converter.
In the process of final dusting high-tension motor frequency converter transformation, invent a kind of high-tension motor actuation redundancy system, for when frequency converter failure, frequency converter can be switched fast to flexible starter of hydro-resistance, ensure fan operation, shorten fault handling time.Through rigging up and debugging, running situation is good, and the water resistance function for subsequent use as redundancy is normal, Water resistance soft starting can be switched to fast under meeting frequency converter failure situation, and effectively can cut off high tension loop, safe handling frequency converter failure, shortens fault handling time.Through data statistics, 3 hours frequency converter failure process off-times before transformation, the operation switching drive system after transformation only needs 10 minutes, greatly reduces fault handling time.
Should be understood that, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection range that all should belong to claims of the present invention.
Claims (7)
1. a drived control method for steel mill final dusting high-tension motor, it is characterized in that, the method comprises the following steps, and 1) outlet of frequency converter is connected with motor lambda line, its secondary line short circuit in the motor course of work; 2) if motor fault, cut off the connection between the outlet of frequency converter and motor lambda line, power frequency is accessed motor lambda line, motor secondary line connects with water resistance cabinet, by pole plate effect in water resistance cabinet, the resistance value of water resistance is reduced, the increasing motor speed of service, when motor operating speed reaches full gear, motor secondary line and water resistance cabinet disconnect, by motor secondary line short circuit.
2. the drived control method of steel mill final dusting high-tension motor according to claim 1, is characterized in that, in described step 1), frequency converter is by disconnecting link K
1access high-tension electricity.
3. the drived control method of steel mill final dusting high-tension motor according to claim 1 and 2, is characterized in that, described step 2) in, described motor lambda line is by single-pole double throw isolation switch K
2switch between the outlet and power frequency of frequency converter.
4. the drived control method of steel mill final dusting high-tension motor according to claim 1 and 2, is characterized in that, described step 2) in, motor secondary line is connected with water resistance cabinet by disconnecting link QS.
5. the drived control method of steel mill final dusting high-tension motor according to claim 1 and 2, is characterized in that, described step 2) in, by motor secondary line short circuit, be specially motor secondary line and be connected with asterism cabinet by disconnecting link 2QF.
6. a driving control device for steel mill final dusting high-tension motor, is characterized in that, this device comprises frequency converter, frequency converter switches cabinet, disconnecting link cabinet, soft-start cabinet, and wherein frequency converter switching cabinet comprises disconnecting link K
1, single-pole double throw isolation switch K
2, disconnecting link cabinet comprises disconnecting link QS
1with disconnecting link QS
2, QS
1not moved end asterism short circuit, soft-start cabinet comprises asterism cabinet, water resistance cabinet, isolation cabinet, disconnecting link 2QF, disconnecting link QS for asterism cabinet and water resistance cabinet being carried out isolating; The lambda line of frequency converter and disconnecting link K
1be connected, K
2not moved end be connected with the lambda line of motor, K
2moved end be connected with power frequency with the leading-out terminal of frequency converter respectively, the outlet of motor connects disconnecting link QS simultaneously
1with disconnecting link QS
2moved end, QS
2not moved end be connected with the not moved end of disconnecting link 2QF, disconnecting link QS simultaneously, the moved end of 2QF is connected with asterism cabinet, and the moved end of QS is connected with water resistance cabinet.
7. the driving control device of steel mill final dusting high-tension motor according to claim 6, it is characterized in that, also comprising programmable logic controller (PLC), switching the signal of the auxiliary point arranged in cabinet and disconnecting link cabinet and chain for safety closing for being received in frequency converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410614770.5A CN104320039A (en) | 2014-10-31 | 2014-10-31 | Drive control method and device of final dusting high-voltage motor of steel mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410614770.5A CN104320039A (en) | 2014-10-31 | 2014-10-31 | Drive control method and device of final dusting high-voltage motor of steel mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104320039A true CN104320039A (en) | 2015-01-28 |
Family
ID=52375236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410614770.5A Pending CN104320039A (en) | 2014-10-31 | 2014-10-31 | Drive control method and device of final dusting high-voltage motor of steel mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104320039A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106325060A (en) * | 2016-11-04 | 2017-01-11 | 新兴铸管股份有限公司 | High-voltage motor closing control method and system |
| CN110174616A (en) * | 2019-04-30 | 2019-08-27 | 首钢京唐钢铁联合有限责任公司 | Method and system for detecting liquid resistance state |
| CN112713761A (en) * | 2021-01-05 | 2021-04-27 | 邯郸钢铁集团有限责任公司 | Method and device for rapidly switching power unit of large-scale synchronizer |
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| CN201369491Y (en) * | 2009-01-21 | 2009-12-23 | 安徽长风电缆集团有限公司 | General-purpose buffer type high-voltage switch cabinet for high-voltage frequency converter |
| CN203399041U (en) * | 2013-06-30 | 2014-01-15 | 白银有色集团股份有限公司 | Frequency conversion speed regulating device of high-power alternating-current winding motor |
| CN203840239U (en) * | 2014-05-26 | 2014-09-17 | 湖北鑫达电气有限公司 | High pressure liquid water resistance soft starting cabinet water resistance temperature closed-loop control instrument |
-
2014
- 2014-10-31 CN CN201410614770.5A patent/CN104320039A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201369491Y (en) * | 2009-01-21 | 2009-12-23 | 安徽长风电缆集团有限公司 | General-purpose buffer type high-voltage switch cabinet for high-voltage frequency converter |
| CN203399041U (en) * | 2013-06-30 | 2014-01-15 | 白银有色集团股份有限公司 | Frequency conversion speed regulating device of high-power alternating-current winding motor |
| CN203840239U (en) * | 2014-05-26 | 2014-09-17 | 湖北鑫达电气有限公司 | High pressure liquid water resistance soft starting cabinet water resistance temperature closed-loop control instrument |
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| 李长利: "320m2烧结主抽风机同步电机高压变频调速系统", 《设备管理与维修》 * |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106325060A (en) * | 2016-11-04 | 2017-01-11 | 新兴铸管股份有限公司 | High-voltage motor closing control method and system |
| CN106325060B (en) * | 2016-11-04 | 2023-06-20 | 新兴铸管股份有限公司 | High-voltage motor closing control method and system |
| CN110174616A (en) * | 2019-04-30 | 2019-08-27 | 首钢京唐钢铁联合有限责任公司 | Method and system for detecting liquid resistance state |
| CN112713761A (en) * | 2021-01-05 | 2021-04-27 | 邯郸钢铁集团有限责任公司 | Method and device for rapidly switching power unit of large-scale synchronizer |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150128 |
|
| RJ01 | Rejection of invention patent application after publication |