CN203256313U - Stepping heating furnace steel charging and discharging machine synchronous control system - Google Patents
Stepping heating furnace steel charging and discharging machine synchronous control system Download PDFInfo
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- CN203256313U CN203256313U CN 201320121983 CN201320121983U CN203256313U CN 203256313 U CN203256313 U CN 203256313U CN 201320121983 CN201320121983 CN 201320121983 CN 201320121983 U CN201320121983 U CN 201320121983U CN 203256313 U CN203256313 U CN 203256313U
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Abstract
The utility model belongs to a control technology, and especially relates to a system for improving the slab stepping heating furnace steel charging and discharging machine synchronous control precision. The synchronous control system comprises a basic automation, and a master variable-voltage variable-frequency transmission system and a slave variable-voltage variable-frequency transmission system which parallel with each other, the primary variable-voltage variable-frequency transmission system is connected with a first steel charging and discharging arm stroke measuring device, the auxiliary variable-voltage variable-frequency transmission system is connected with a second steel charging and discharging arm stroke measuring device, and the first steel charging and discharging arm stroke measuring device and the second steel charging and discharging arm stroke measuring device are respectively connected with the basic automation. The synchronous control system realizes the steel charging and discharging machine frequency converter SIMOLINK master-slave control, and can directly measure the practical stroke of the steel charging and discharging machine and transmit the practical stroke to the above transmission systems for correction, so the response speed and the control speed are improved, the interval of the slabs on the stepping beam of a heating furnace is accurately controlled, it is in favor of the heating quality of the slabs in the width direction, and the inclined slab charging or inclined slab discharging, even dropping, in the steel charging and discharging processes can be effectively prevented.
Description
Technical field
The utility model belongs to control techniques, particularly a kind of system for improving slab walking beam furnace dress extractor synchronous control accuracy.
Background technology
Domestic slab walking beam furnace dress extractor is the mode of four motors of configuration mostly, two dress steel machines, two extractors, all adopt variable frequency control, realize synchronization control by upper computer and electromagnetic clutch, synchronous control accuracy is low, and response speed is low, often cause slab dress tiltedly or go out tiltedly, even the slab accident that drops.
As shown in Figure 1, former control method is that dress extractor stroke that one-level will be calculated is converted to speed and issues the transmission of dress extractor, transmission is indirectly measured actual displacement and is sent to one-level by being arranged on encoder on motor, after one-level receives, deviation is issued transmission and realizes synchronization control.Former control method is indirectly to measure by encoder to take on steel arm stroke, in process because mechanical clearance inevitably causes the larger problem of measured deviation.
The utility model content
The purpose of this utility model is to provide a kind of walking beam furnace dress extractor synchronous control system, to solve the low problem of synchronous control accuracy that exists in prior art.
For achieving the above object, the utility model is by the following technical solutions:
A kind of walking beam furnace dress extractor synchronous control system, comprise Basic automation level, main transformer parallel with one another is pressed Variable Frequency Drives and from the variable voltage variable frequency transmission system, main transformer is pressed Variable Frequency Drives to connect first and is taken on steel arm stroke measuring device, connect second from the variable voltage variable frequency transmission system and take on steel arm stroke measuring device, described first takes on steel arm stroke measuring device takes on steel arm stroke measuring device and is connected with Basic automation level respectively with being connected.
The utility model has been realized taking on the dynamo-electric machine frequency transformer of steel SIMOLINK principal and subordinate and has been controlled, directly measure dress extractor traveled distance and be sent to transmission system and proofread and correct, namely improve response speed and improved again control accuracy, can control more accurately the interval of slab on the process furnace walking beam, be conducive to the heating quality on the width of plate slab direction, simultaneously can effectively prevent from taking on steel process slab and fill tiltedly or go out tiltedly, the accident of avoiding dropping occurs.
Description of drawings
Fig. 1 is former control principle sketch;
Fig. 2 is control principle sketch of the present utility model.
In figure, L1: Basic automation level; VVVF: variable voltage variable frequency transmission system; Take on the dynamo-electric machine encoder of steel at 1: the first; Take on the dynamo-electric machine encoder of steel at 2: the second; VVVF master: main transformer is pressed Variable Frequency Drives; VVVF from: from the variable voltage variable frequency transmission system; I: first takes on the dynamo-electric horn encoder of steel or displacement sensor; II: second takes on the dynamo-electric horn encoder of steel or displacement sensor.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
As shown in Figure 2, a kind of walking beam furnace dress extractor synchronous control system comprises Basic automation level, and main transformer parallel with one another is pressed Variable Frequency Drives VVVF
MainWith from variable voltage variable frequency transmission system VVVF
From, main transformer is pressed Variable Frequency Drives VVVF
MainConnect first and take on the dynamo-electric horn encoder of steel or displacement sensor I, from variable voltage variable frequency transmission system VVVF
FromConnect second and take on the dynamo-electric horn encoder of steel or displacement sensor II, first takes on the dynamo-electric horn encoder of steel or displacement sensor I takes on the dynamo-electric horn encoder of steel or the displacement sensor II is connected with Basic automation level respectively with being connected.
Principle of the present utility model is:
1, dress steel machine and extractor are realized master-slave synchronisation control in the frequency transformer level, change the method that realizes at present synchronization control in one-level.New control method of the present utility model is that synchronization control is realized at gear stage fully, the second dress extractor is passed in actual speed or the torque of the first dress extractor, remove from and issue one-level and issued again the process of transmission by one-level, shorten the control response time, improve control accuracy.
2, directly measurement takes on steel arm stroke.New control method of the present utility model is directly to measure to take on steel arm stroke, improves measuring accuracy, speed closed loop is controlled by one-level changed into gear stage control, can again shorten the control response time, improves control accuracy.
The new control response time of controlling after dropping into will be shortened to by original 400ms the 100ms left and right, control accuracy shortens to the 3mm left and right by original 10mm, make the interior slab spacing of process furnace substantially equal, atmosphere on the width of plate slab direction is more stable, and the mass defect that on the width of plate slab direction, the heating reason causes is highly beneficial in theory for eliminating.
Claims (2)
1. a walking beam furnace fills the extractor synchronous control system, comprise Basic automation level, it is characterized in that: comprise also that main transformer parallel with one another is pressed Variable Frequency Drives and from the variable voltage variable frequency transmission system, main transformer is pressed Variable Frequency Drives to connect first and is taken on steel arm stroke measuring device, connect second from the variable voltage variable frequency transmission system and take on steel arm stroke measuring device, described first takes on steel arm stroke measuring device takes on steel arm stroke measuring device and is connected with Basic automation level respectively with being connected.
2. walking beam furnace according to claim 1 dress extractor synchronous control system is characterized in that described first takes on steel arm stroke measuring device and second and take on steel arm stroke measuring device and be motor arm encoder or displacement sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320121983 CN203256313U (en) | 2013-03-18 | 2013-03-18 | Stepping heating furnace steel charging and discharging machine synchronous control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320121983 CN203256313U (en) | 2013-03-18 | 2013-03-18 | Stepping heating furnace steel charging and discharging machine synchronous control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203256313U true CN203256313U (en) | 2013-10-30 |
Family
ID=49468897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320121983 Expired - Fee Related CN203256313U (en) | 2013-03-18 | 2013-03-18 | Stepping heating furnace steel charging and discharging machine synchronous control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203256313U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104878191A (en) * | 2014-02-28 | 2015-09-02 | 宝山钢铁股份有限公司 | Control method for preventing slab from smashing and hitting walking furnace fixation beam |
-
2013
- 2013-03-18 CN CN 201320121983 patent/CN203256313U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104878191A (en) * | 2014-02-28 | 2015-09-02 | 宝山钢铁股份有限公司 | Control method for preventing slab from smashing and hitting walking furnace fixation beam |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131030 Termination date: 20140318 |