CN1229642C - Steel ladle slag unloading automatic detecting system - Google Patents
Steel ladle slag unloading automatic detecting system Download PDFInfo
- Publication number
- CN1229642C CN1229642C CN 01126918 CN01126918A CN1229642C CN 1229642 C CN1229642 C CN 1229642C CN 01126918 CN01126918 CN 01126918 CN 01126918 A CN01126918 A CN 01126918A CN 1229642 C CN1229642 C CN 1229642C
- Authority
- CN
- China
- Prior art keywords
- sensor
- detecting system
- steel ladle
- ladle slag
- slag unloading
- 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 - Lifetime
Links
Abstract
The present invention relates to an automatic steel ladle slag unloading detection system which comprises a sensor (2), a signal filtering device (14), a preamplifier (10), a connection terminal box (11), a transmitter (12) and a programmable controller (13), wherein the sensor (2) is fixedly connected to a backing ring (61) of a mechanical arm (6); a communication cable (9) of the sensor (2) penetrates through a pipe hole (62) of the mechanical arm (6); detection signals collected by the sensor (2) are filtered to the preamplifier (10) by the signal filtering device (14), and are delivered to the programmable controller by the connection terminal box (11) and the transmitter (12) for processing and calculation so as to give and display alarm signals and control signals. The present invention is suitable for the new technical requirements for manufacturing steel in an electric furnace, and alters a slag unloading detection area. Because the sensor (2) avoids a vacuum degassing furnace, the service life of the sensor (2) is largely prolonged, and the detection accuracy also obtains improvement. The present invention has deep significance for producing clean steel and providing a smelting technical device with less slag.
Description
Technical field
The invention belongs to the Electromagnetic Testing Technology field, the electric furnace ladle roughing slag that particularly has vacuum degassing process detects.
Background technology
Following slag detection system is divided from Fundamentals of Sensors, has that dual coil electromagnetic induction type, unicoil are induction, acoustic frequency vibration formula, Electromagnetically vibrating etc.
At present representative following slag detection system is: the twin coil formula sensor of German AMEPA company; The electromagnetic signal frequency identification formula sensor of U.S. ADVENT company; The ultrasonic sensor of U.S. RADAR company.Domestic Wuhan Metallurgical Science and Technology Univ. has developed slag detection system under the high frequency oscillator formula, a kind of following slag detection system that has the unicoil sensor of Zhejiang University's development; A kind of non electrical quantity detection technique of Taiyuan Iron and Steel Co., Shanxi Prov's development is used for the metallurgical continuous casting process and detects slag device or the like.
Because the electric furnace production technology has pair molten steel to carry out vacuum outgas one ring, and above-mentioned a series of down slag detecting sensor all with the ladle disjunctor, so just make ladle and sensor must together enter vacuum outgas (Vacuum Distillation) stove and reach the purpose of molten steel in the ladle being carried out vacuum outgas; Again because vacuum outgas needs twenties minutes, enter the damage that the sensor of vacuum degassing furnace will be too early together in company with ladle like this.
Summary of the invention
The object of the present invention is to provide a kind of sensor life-time that makes to prolong greatly, the following slag detection system that accuracy of detection also improves.
For achieving the above object, technical solution of the present invention is: steel ladle slag unloading automatic detecting system comprises sensor, prime amplifier, connection terminal case, transmitter, programmable controller PLC; Detection signal by the collection of sensor coil is sent to prime amplifier, then treated signal is delivered to transmitter again, finally is sent to programmable controller PLC; Said sensor is fixedly connected on the mechanical arm backing ring, and sensor always keeps coaxial with backing ring like this, thereby makes that accuracy of detection and work on the spot efficient are guaranteed; The sensor communication cable passes in the mechanical arm pore, and it is easy to operate that this helps the field staff, and this time slag detection means is achieved;
Because sensing station changes, in order to make sensor can successfully obtain down the slag signal, we are the corresponding magnetic medium of cell winding placed around after moving also, this magnetic medium, the one, magnetic conductivity is arranged, the 2nd, partiting thermal insulation is arranged, the ability that can make sensor obtain signal like this strengthens.
Further, because the sensor position changes, add that other can not determine, the for example influence of vibration, strong electromagnetic wave factor, in order to make through the signal behind the prime amplifier to the slag detection is useful down, remove in a jumble, we have added after signal filtering is installed on the sensor coil, on the path before the prime amplifier.
Said magnetic medium is ferromagnetic material or the material that approaches ferromagnetics.
The said sensor outside coats diamagnetic housing, and the one, play diamagnetic effect, the 2nd, be convenient to burn oxygen technology.
Said diamagnetic housing is divided into inside and outside two-layer, and promptly internal layer is a copper material, and skin is a stainless steel.
Advantage of the present invention is: adapt to the requirement of electric furnace steel making new technology, change slag surveyed area down, avoid vacuum degassing furnace, make sensor life-time prolong greatly, make the electric furnace ladle roughing slag realize declaring automatically slag; What do not lose again simultaneously the detection of the steely quantity of slag in the ladle molten steel; And assurance flexible installation long nozzle of field personnel and the operation of other production process.
Description of drawings
The sensor area schematic of Fig. 1 prior art.
Fig. 2 is a sensor area schematic of the present invention.
Fig. 3 is connected schematic cross-section for sensor arrangement among the present invention with carriage.
Fig. 4 is a filter circuit diagram of the present invention.
Fig. 5 constitutes synoptic diagram for prior art system.
Fig. 6 is that system of the present invention constitutes synoptic diagram.
Embodiment
Shown in Fig. 2,3,4,6, steel ladle slag unloading automatic detecting system comprises sensor 2, prime amplifier 10, connection terminal case 11, transmitter 12, programmable controller PLC13 and signal filtering device 14; Signal filtering device 14 is arranged on the path between sensor 2 and the prime amplifier 10, its end points 141,142 is connected with magnetic test coil 21 in the sensor 2, end points 143,144 is connected with magnetic test coil 22, and end points 145,146,147,148 is connected with prime amplifier 10 respectively;
Sensor 2 separates with ladle 1, and sensor 2 is fixedly connected on tundish mechanical arm 6 backing rings 61, and sensor communication cable 9 passes in mechanical arm 6 pores 62; Magnetic test coil 21 is a current coil, and magnetic test coil 22 is a potential winding; Sensor 2 magnetic test coils 21,22 placed around magnetic mediums 23 are as ferromagnetic material, and sensor 2 outsides coat diamagnetic housing, and its internal layer 24 is a copper material, and outer 25 is stainless steel, as shown in Figure 3.
The detection signal of gathering by the magnetic test coil in the sensor 2 21,22 is sent to prime amplifier 10 through 14 filtering of signal filtering device, then treated signal is delivered to transmitter 12 again through connection terminal case 11, finally transmits programmable controller PLC13;
When ladle when preparing casting, provide the sinusoidal current of alternation to the main coil magnetic test coil 21 of sensor 2, be the alternating magnetic field of the same frequency alternating voltage of magnetic test coil 22 inductions at the secondary coil of sensor 2.
When center sensor has when long nozzle 7 flows through to the molten steel 15 of tundish 8 or slag, to cause the variation of field region relative permeability, the slag relative permeability is big, the molten steel relative permeability is little, be directly proportional with relative permeability owing to magnetic induction density again, institute's induced electromotive force is big during slag, and institute's induced electromotive force is little during molten steel.The sensor receiving coil, it is the dregginess size of the size reflection molten steel of the secondary coil induced electromotive force that generates the variation magnetic field, its corresponding relation sees Table 1, and the simulating signal of computing machine autobiography sensor in future is handled to calculate and provided display alarm signal and control signal.
According to the pairing signal number percent control of default slag amount lower skateboard 4.When ladle 1 casting, lower skateboard 4 is opened; When detection molten steel 15 dregginess needed ladle 1 to stop to cast, promptly lower skateboard 4 was closed.No matter whether ladle 1 casts, its upper slide 3 all maintains static.The partiting thermal insulation guard circle 5 that is provided with on backing ring 61 tops plays the partiting thermal insulation effect.
Table 1: the corresponding relation of ladle dregginess and detection signal amount
| Dregginess number percent | Detection signal amount number percent |
| 5％ | 5％ |
| 10％ | 14％ |
| 15％ | 16.5％ |
| 20％ | 26.5％ |
| 25％ | 27.5％ |
| 30％ | 36％ |
| 35％ | 40％ |
| 40％ | 47％ |
| 45％ | 51.5％ |
| 50％ | 58％ |
| 60％ | 71％ |
| 80％ | 91.5％ |
| 100％ | 100％ |
Claims (5)
1. steel ladle slag unloading automatic detecting system comprises sensor (2), prime amplifier (10), connection terminal case (11), transmitter (12), programmable controller (13); Send to prime amplifier (10) by the detection signal that the magnetic test coil in the sensor (2) (21,22) is gathered, then treated signal is delivered to transmitter (12) again, finally be sent to programmable controller (13) through connection terminal case (11); It is characterized in that: said sensor (2) is fixedly connected on tundish mechanical arm (6) backing ring (61), and sensor communication cable (9) passes in mechanical arm (6) pore (62); At said sensor (2) magnetic test coil (21,22) placed around magnetic mediums (23).
2. steel ladle slag unloading automatic detecting system as claimed in claim 1 is characterized in that: also comprise signal filtering device (14), this signal filtering device (14) is arranged on the path between sensor (2) and the prime amplifier (10).
3. steel ladle slag unloading automatic detecting system as claimed in claim 1 is characterized in that: said magnetic medium (23) is a ferromagnetic material.
4. steel ladle slag unloading automatic detecting system as claimed in claim 1 or 2 is characterized in that: said sensor (2) outside coats diamagnetic housing, and it comprises internal layer (24) and outer (25).
5. steel ladle slag unloading automatic detecting system as claimed in claim 4 is characterized in that: said diamagnetic housing, and internal layer (24) is a copper material, outer (25) are stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01126918 CN1229642C (en) | 2001-09-28 | 2001-09-28 | Steel ladle slag unloading automatic detecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01126918 CN1229642C (en) | 2001-09-28 | 2001-09-28 | Steel ladle slag unloading automatic detecting system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1410186A CN1410186A (en) | 2003-04-16 |
| CN1229642C true CN1229642C (en) | 2005-11-30 |
Family
ID=4666921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01126918 Expired - Lifetime CN1229642C (en) | 2001-09-28 | 2001-09-28 | Steel ladle slag unloading automatic detecting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1229642C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1299853C (en) * | 2005-05-11 | 2007-02-14 | 浙江大学 | Continuous casting roughing slag inspection method and device based on vibration monitoring |
| CN101972841B (en) * | 2010-10-18 | 2012-08-01 | 河北钢铁股份有限公司唐山分公司 | Continuous casting ladle slag automatic control system and control method |
| CN102527969A (en) * | 2010-12-23 | 2012-07-04 | 北京中远通科技有限公司 | Automatic ladle slag outflow detection system and method thereof |
| CN102416455B (en) * | 2011-12-15 | 2013-03-13 | 湖南科美达电气股份有限公司 | Electromagnetic roughing slag detecting and controlling system |
| CN103506592B (en) * | 2012-06-29 | 2015-08-26 | 宝山钢铁股份有限公司 | A kind of continuous-casting steel pouring control method and device |
| CN104999043B (en) * | 2014-04-17 | 2017-04-26 | 宝山钢铁股份有限公司 | Online measuring device and method for opening degree of sliding nozzle of continuous casting ladle |
| CN103962516A (en) * | 2014-05-07 | 2014-08-06 | 马钢(集团)控股有限公司 | Steel ladle roughing slag detection system and method |
-
2001
- 2001-09-28 CN CN 01126918 patent/CN1229642C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CN1410186A (en) | 2003-04-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106383146B (en) | A kind of induction reactance formula oil liquid detection system and preparation method thereof | |
| CN1229642C (en) | Steel ladle slag unloading automatic detecting system | |
| CN206863240U (en) | Metallic particles detection means in fluid | |
| CN102243200A (en) | On-line monitoring sensor of lubricating oil | |
| CN110031373A (en) | A kind of multi signal synchronous feedback plant of oil liquid detection | |
| JP2571330B2 (en) | Method and apparatus for measuring dielectric at metal strip position | |
| CN204064443U (en) | Based on the transformer fault prior-warning device of vibration transducer | |
| CN207096309U (en) | A kind of steam turbine generator shaft current and shaft voltage on-Line Monitor Device | |
| US4853634A (en) | Device for crack detection on hot cast billets and suppressing the effects of magnetic regions | |
| CN206740938U (en) | The stator core breakdown judge TT＆C system of small and special electric machine | |
| CN109737310B (en) | Electromagnetic detection system for detecting inside of pipeline | |
| CN203133027U (en) | Casting defect detection device based on pulse vortex | |
| CN101905302B (en) | Slag detection method and detection system for continuous casting ladles | |
| CN103308599A (en) | Steel plate online flaw detecting system utilizing electromagnetic ultrasonic | |
| CN201477423U (en) | Intelligent vibration monitoring and protecting apparatus | |
| CN109520682A (en) | A kind of on-line monitoring system and method applied to air leakage rate of sintering machine | |
| CN203551240U (en) | Detection and protection device of rotating machinery | |
| CN115165684A (en) | Electromagnetic type oil abrasive particle on-line monitoring device | |
| CN206876631U (en) | A kind of eddy current detecting equipment with collection of illustrative plates | |
| CN115372458A (en) | Device and method for dynamically detecting cracks | |
| CN210128615U (en) | Brown alumina dumping furnace smelting safety monitoring system | |
| CN208973850U (en) | A kind of magnetic resonance compatible transfusion system based on faraday cup | |
| CN215812266U (en) | Metal particle detection sensor | |
| CN104451027A (en) | High precision slag carry-over detection device | |
| CN203287098U (en) | Multifunctional vibration transmitter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20051130 |