CN1195029A - Method for continuously detecting burning loss of blast furnace lining - Google Patents
Method for continuously detecting burning loss of blast furnace lining Download PDFInfo
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- CN1195029A CN1195029A CN97103824A CN97103824A CN1195029A CN 1195029 A CN1195029 A CN 1195029A CN 97103824 A CN97103824 A CN 97103824A CN 97103824 A CN97103824 A CN 97103824A CN 1195029 A CN1195029 A CN 1195029A
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- transmission line
- blast furnace
- furnace lining
- burn
- continuously detecting
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- 238000000034 method Methods 0.000 title claims abstract description 50
- 230000005540 biological transmission Effects 0.000 claims abstract description 94
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 45
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 28
- 229910052742 iron Inorganic materials 0.000 claims description 14
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- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 9
- 229910052750 molybdenum Inorganic materials 0.000 claims description 9
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- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 5
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- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 239000011651 chromium Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
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- 238000005303 weighing Methods 0.000 claims 1
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- 238000013461 design Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
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- 229910000679 solder Inorganic materials 0.000 description 1
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Abstract
A method for continuously detecting the ablated condition of blast furnace liner features that a group of heat resisting transmission lines in different lengthes are embedded in the liner to be detected. Each transmission line is connected to one solid relay. All the solid relays are controlled by single-chip microcomputer system to sequentially operate in order to cyclically detect the "on" or "off" state of each transmission line. The "on" or "off" state is converted into digital signal, which is sent to computer system to determine the ablated condition of liner. Its advantages are high reliability and measurement precision, and convenient implementation.
Description
The present invention relates to a kind of measuring method, particularly a kind of automatic testing method to burning loss of blast furnace lining situation continuous detecting.
Accurately detecting continuously of burning loss of blast furnace lining state to instructing blast furnace operating, improved ironmaking efficient and guaranteed production safety and prolong blast furnace campaign, and be all significant.
In order to solve the continuous detecting problem of burning loss of blast furnace lining state, the normal both at home and abroad method that adopts has the thermopair method, ultrasonic method, TDR (TIME DOMAIN REFLECTION) method.The thermopair method is easy, and measuring accuracy is lower, and sensing range is limited and failure rate is higher, though ultrasonic method and TDR method measuring accuracy are higher, but equipment is complicated, and maintenance is big and can not be used for the position that cupola well, furnace bottom have molten iron.Consult United States Patent (USP) 4,269,397.May 26,1981, and METHOD FOR MEAS-URI NG THE THICKNESS OF A REFRACTORY IN A METALLURGICAL APPARATUS (smelting furnace refractorily lined thickness detecting method) has described the TDR method; United States Patent (USP) 4,510,793, Apr.16,1985, METHOD OF MONITORING THE WEAR OF A REFRACTORY LINING OFA METALLURGICAL FURNACE WALL (smelting furnace refractorily lined scaling loss detection method) has described ultrasonic method; Chinese patent 94228802.5, the blast furnace lining thickness gauge has been described the detector of ultrasonic method.In order to overcome the problems referred to above, the present invention has designed a kind of transmission line method of continuous detecting burning loss of blast furnace lining state.It adopts the different high temperature resistant conduction transmission line of a group length, with its " lead to ", " breaking " as status signal, form easy, reliable transmission line transmitter and be embedded in the furnace body, promptly each layer is buried the 4-16 point underground in the horizontal direction, buries the 2-8 layer underground in vertical direction.All transmission line signal of sensor are connected in the peripheral hardware computer system through shielding cable, and peripheral hardware computer system real-time rendering goes out to reflect the longitudinal and transverse sectional view of whole body of heater furnace lining state, but prediction converter life again.
The purpose of this invention is to provide a kind of easyly, reliable, the maintenance of the equipment amount is few, enough measuring accuracy is arranged and can be applicable to the method for continuously detecting burning loss of blast furnace lining at any position of blast furnace.
The present invention adopts such method to realize: adopt the different high temperature resistant conduction transmission line of a group length, " lead to " with it, " break " as status signal, form easy, 8-64 cover transmission line transmitter is embedded in the furnace body reliably, promptly each layer is buried the 4-16 point underground in the horizontal direction, bury the 2-8 layer underground in vertical direction, all transmission line signal of sensor are connected in the peripheral hardware computer system through shielding cable, peripheral hardware computer system real-time rendering goes out to reflect the vertical of whole body of heater lining operation, drawing in side sectional elevation, both can monitor the body of heater running status, but prediction converter life again.Along with burn-back, transmission line, will be blown to the shortest successively from the longest.Therefore, as long as record the sequence number of the transmission line that is blown, promptly know the position that burn-back arrives.At this moment accuracy of detection is the difference Δ lm of the built-in length of adjacent two transmission lines.General blast furnace stack is 500-800mm with the lining thickness of upper part, by 800mm, as adopts 8 transmission lines and uniform distribution, and then the difference of the built-in length of two adjacent transmission lines is Δ lm=100mm, and this measuring accuracy is lower.As adopt 64 transmission lines and uniform distribution, and then the difference of the built-in length of two adjacent transmission lines is Δ lm=12.5mm, it is sufficiently high that this measuring accuracy detects burn-back.But the complexity of equipment change at this moment, sensor bulk become big, trouble are installed, reliability decrease.The present invention adopts peripheral hardware department of computer science to unify and works out the fuzzy control application software for this reason, to being equivalent to the burn-back in the Δ lm scope, carry out continuously fuzzy prediction, only use under 8 transmission lines and the equally distributed situation, the burn-back that 800mm is thick is implemented continuous detecting, and its accuracy of detection can reach ± 20mm or higher.On the basis of analyzing the burning loss of blast furnace lining rule and the summing up experience fact, can set up the mathematical model of following prediction scaling loss.
Electrical isolation between the transmission line is to solve like this.Adopt special high temperature resistant, anti abrasive high purity aluminium oxide sleeve pipe, give on the sleeve pipe and stay the aperture that can insert transmission line.Design the high purity aluminium oxide sleeve pipe of several different lengthss, transmission line is inserted to give accordingly stay aperture also to cement and seal with the high temperature inorganic adhesive.
Single chip microcomputer minimum system up, design has n signal input P0, P
l... Pn can connect n root conduction transmission line L0, L1, L2, Ln also has n control delivery port A0, A1 ... An can control and corresponding n the relay R L0 that links to each other of n root conduction transmission line, RL1 ... RLn, under the instruction control of single chip microcomputer minimum system uP, rly. is connected in order.When RLm connected, uP tested corresponding input aperture Pm, confirmed that the transmission line Lm that is attached thereto is " leading to " or " breaking ", and promptly whether Lm connects with power supply Vc.Because of burn-back is slow process, thus needn't be very frequent to the loop test of transmission line, and the loop test cycle can be defined as 1 second or longer.But should limit very short the time of setting up a call of rly., so that save power supply.Because rly. is in the frequent movement state for a long time, thus must select for use the life-span long, operating frequency height, the solid state relay of no electrical contact.Single chip microcomputer minimum system uP, also have a photoelectricity to isolate and can drive the communication delivery port SIG of long line, the transmission line sequence number of burn-back in-position will be characterized, convert standard communication coding signal to, be connected to and be separated by peripheral hardware computer system in the machine room far away of body of heater through 3 core shielding cables, standoff distance is not more than 500m, and 1 of 3 core shielding cables is signal and communication line SIG, and two are+5V supply lead Vc and ground wire GND in addition.
1 single chip microcomputer minimum system uP, n root conduction transmission line and high purity aluminium oxide sleeve pipe, a n solid state relay and 13 core shielding cable are formed 1 cover transmission line transmitter.8-64 cover transmission line transmitter is embedded on the blast furnace, and every suit transmission line signal of sensor is all received the multiple signals interface message processor (IMP) through 3 core cables.The multiple signals interface message processor (IMP) is a MUX, and 64 input apertures and 1 delivery port are arranged, and regularly exports 64 cover transmission line signal of sensor in order, inserts the RS232 input aperture of peripheral hardware computer system.The peripheral hardware computer system receives 8-64 cover transmission line signal of sensor, and by the fuzzy control application software, real-time rendering goes out to reflect the longitudinal and transverse sectional view of whole body of heater burn-back state and gives the newspaper converter life at any time.The data of burn-back situation deposit floppy disk in per diem, monthly, per year, set up the technology files in the whole lifetime of blast furnace, as the valuable experience material of updating and improve the fuzzy control application software.
The present invention compared with prior art has easy to be reliably, and the maintenance of equipment amount is few, and function is many and be not subjected to the advantage of application site restriction.This method can be applicable to shaft, the cupola well of blast furnace, the burn-back of furnace bottom all sites detects and the converter life prediction, also can be used for the scaling loss detection and the converter life prediction of High Temperature Furnaces Heating Apparatus refractorily lineds such as glass cellar for storing things, cement kiln.
Specific implementation method of the present invention and embodiment are provided by the following drawings.
Fig. 1 is a general arrangement schematic of the present invention;
Fig. 2 is the transmission line of the present invention method electrical schematic diagram that opens circuit;
Fig. 3 is a transmission line short-circuit method electrical schematic diagram of the present invention;
Fig. 4 is transmission line transmitter of the present invention and scheme of installation thereof;
Fig. 5 is the transmission line of the present invention method high purity aluminium oxide insulation thimble synoptic diagram that opens circuit;
Fig. 6 is a transmission line short-circuit method high purity aluminium oxide insulation thimble synoptic diagram of the present invention;
Fig. 7 is that the A of Fig. 5 of the present invention is to view;
Fig. 8 is that the B of Fig. 6 of the present invention is to view.
Below in conjunction with accompanying drawing the specific embodiment of the invention is done with further instruction:
See shown in Figure 1: 1-0,1-1 ... 1-62,1-63 are embedded in 64 on the body of heater to overlap independently transmission line transmitter, 2-0,2-1 ..., 2-62,2-63 is 64 3 core shielding cables, and every length all is connected in the multiple signals interface message processor (IMP) 3 in the control machine room less than 500m, multiple signals interface message processor (IMP) 3 is a MUX, can select output certain 1 road input signal wherein from 64 road input signals, and by 0,1 ... 62,63 sequential loop is selected output, and loop cycle is decided to be 30-60 minute and is advisable.The output of multiple signals interface message processor (IMP) 3 promptly is the transmission line sequence number of the representative burn-back in-position of every suit transmission line transmitter output, inserts off-design peripheral hardware computer system 4 and carries out fuzzy control operation.
See shown in Figure 2: transmission line L0-Ln comes and goes double structure, constitutes the transmission line method transmitter that opens circuit.One end of every transmission line is the common-battery source, promptly all is connected on the power supply Vc.Inductance L and capacitor C
1, C
2Play pressure stabilization function to power supply Vc.The other end of transmission line is respectively through relay R L
0-RL
nReceive the input aperture P0-Pn of single-chip minimum system uP, the control end of each rly. is received the control delivery port A0-An of uP.UP is cyclical operation control delivery port A0-An in order, and loop cycle is 1 second or longer, when operation A m, and relay R Lm adhesive, if transmission line Lm is not blown, then P0 communicates with power supply Vc, uP measures state and " leads to ", and remembers its sequence number m.Otherwise if Lm is blown, then P0 and Vc are obstructed, and uP measures state and " breaks ", and remembers sequence number m equally.When burn-back arrives position between transmission line Lm-1 and the transmission line Lm, promptly arrive Δ lm-
1In the time of in the scope, sequence number is less than the transmission line L0-Lm-of m
1All rubbed by scaling loss.Therefore the maximum sequence number in the transmission line that changes of state, the position of promptly representing burn-back to arrive, this sequence number is compiled into the standard communication coding by single-chip minimum system uP, isolates and after buffering drives, by the SIG line output of 3 core cables through photoelectricity.Frame of broken lines 1a partly inserts in the high purity aluminium oxide insulation thimble, and frame of broken lines 1b is partly with 5 sealings of iron casket.Conduction transmission line L0-Ln must adopt resistant to elevated temperatures metal tungsten wire or molybdenum filament, or adopts the alloy silk of tungsten, molybdenum, chromium.The fusing point of molybdenum is 2600 ℃, substantially exceeds 1700 ℃ of the interior top temperatures of State of Blast Furnace, and conductivity is better than iron wire, and hardness is 1/2 of tungsten filament, is suitable for present method.
See shown in Figure 3: transmission line L0-Ln is a single line one way structure, constitutes transmission line short-circuit method transmitter, can be applicable to the position that cupola well, furnace bottom have molten iron.Blast-melted resistivity is 7-10 times of normal temperature pure iron resistivity, remains the good conductor of electricity, and the molten iron resistance of the 100mm distance of being separated by is not more than 1 Europe.Therefore, in case burn-back arrives transmission line Lm-
1And position between the Lm, promptly reach Δ lm-
1In the time of in the scope, transmission line L0-Lm-
1Communicated with Lc by molten iron short circuit in the stove, promptly communicate with power supply.And transmission line Lm-Ln still keeps initially " breaking " state.
See shown in Figure 4: 1a and 1b are the transmission line transmitters, and 2 is 3 core shielding cables, the 3rd, and the multiple signals interface message processor (IMP), the 4th, the peripheral hardware computer system, the 5th, sealing iron casket, the 6th, hollow water flowing cooled enclosure, the 7th, water inlet pipe, the 8th, rising pipe, the 9th, transmitter is steel pipe fixedly, and the 10th, blast furnace iron shell, the 11st, solder joint, the 12nd, the blast furnace refractorily lined, the 13rd, for being installed, the transmission line transmitter bores good open holes in advance.
Easily solve the water coolant water source on the blast furnace, hollow water flowing cooling jacket 6 both can prevent the detrimentally affect of envrionment temperature to single-chip minimum system 1b, can protect transmitter again.When burying transmission line underground and opening circuit the method transmitter, the front end of transmitter stays Δ ls at interval apart from the stove inwall, as the initial scaling loss speed of furnace lining
To substitute fs burn-back speed
, this is beneficial to the useful length that makes full use of transmitter.
See shown in Fig. 5,7: the 14th, the high purity aluminium oxide sleeve pipe, be by the special same outer diameter as of more piece (∮ 24), the short sleeve of different conductor hole count combines, after interspersed good line directly is the molybdenum filament transmission line of ∮ 0.8, cement with the refractory inorganic adhesive binding agent between the high purity aluminium oxide short sleeve, fully coat high temperature inorganic glue binding agent on the molybdenum filament, a certain proportion of high purity aluminium oxide powder that also can mix in case of necessity is so that the gap between sealing ∮ 0.8 molybdenum filament and ∮ 1 aperture.The high purity aluminium oxide short sleeve has three kinds of different length, promptly 50,100,200mm, so that be complementary with different lining thicknesses, is convenient to the accuracy of detection that emphasis guarantees privileged sites again.Short sleeve length is short more, then just easy more assurance of this interval accuracy of detection.The general transmission line method high purity aluminium oxide short sleeve that opens circuit can save with 8, the lead hole count of each joint should be respectively 2,4,6 ... 14,16, if adopt 8 joint 200mm short sleeves, and adopt 200 long initial Δ ls, then maximum detection range is 200 * 9=1800mm.
See shown in Fig. 6,8: transmission line short-circuit method high purity aluminium oxide insulation thimble physical dimension and the transmission line method high purity aluminium oxide insulation thimble that opens circuit is identical, and short sleeve also is divided into 50,100,200mm3 kind length.Just the lead hole count of each joint short sleeve distributes differently, be respectively 1,2,3 ... 16,17.Short sleeve can adopt 17 joints, if adopt the 200mm short sleeve, then maximum detection range is 200 * 17=3400mm.Because of this transmitter is to be used in blast furnace the cupola well of molten iron, furnace bottom position are arranged,, should strict press the sequence number check mark plug-in mounting of wire guide during composition so should be specifically noted that the gap that seals between ∮ 0.8 molybdenum filament and ∮ 1 wire guide.
Claims (8)
1, a kind of to method for continuously detecting burning loss of blast furnace lining, it is characterized in that: it adopts the different high temperature resistant conduction transmission line of a group length, " lead to " with it, " break " as status signal, form easy, 8-64 cover transmission line transmitter is embedded in the furnace body reliably, promptly each layer is buried the 4-16 point underground in the horizontal direction, weighing Nogata to burying the 2-8 layer underground, all transmission line signal of sensor are connected in the peripheral hardware computer system through shielding cable, peripheral hardware computer system real-time rendering goes out to reflect the vertical of whole body of heater lining operation, drawing in side sectional elevation, both can monitor the body of heater running status, but prediction converter life again.
2, by the described method for continuously detecting burning loss of blast furnace lining of claim 1, it is characterized in that: every suit transmission line transmitter comprises the different high temperature resistant conduction transmission line of a group length, 8-16 root transmission line can be arranged, furnace lining is thick more, and transmission line should be many more, one group of transmission line from the longest to the shortest, compile in order with 0,1 ..., m-1, m,, n-1, n sequence number, to represent it in the residing geometric position of lining thickness direction, " lead to " or " breaking " represents its state with it, along with burn-back, transmission line from the longest to the shortest, will be successively by scaling loss, therefore, as long as record, promptly know the position that burn-back arrives by the sequence number of the transmission line of scaling loss, the geometric position of every transmission line representative, it is good to demarcate in advance when designing and burying transmitter underground.
3, by the described method for continuously detecting burning loss of blast furnace lining of claim 1, it is characterized in that: the difference Δ lm of the built-in length of every adjacent two transmission lines in the transmission line, adopt peripheral hardware department of computer science to unify and work out the fuzzy control application software, to being equivalent to the burn-back in the Δ lm scope, carry out continuously fuzzy prediction.
4, by the described method for continuously detecting burning loss of blast furnace lining of claim 1: it is characterized in that: shaft adopts the transmission line breaking method with the upper part, and promptly the original state of transmission line is " leading to ", and the state after changing along with burn-back is " breaking ".But the position that cupola well, furnace bottom is had molten iron, adopt the transmission line short-circuit method, the original state that is transmission line is " breaking ", and the state after changing along with burn-back is " leading to ", the position that on behalf of burn-back, the sequence number of the transmission line that state changes promptly arrive.
5, by the described method for continuously detecting burning loss of blast furnace lining of claim 2, it is characterized in that: the 8-16 root conduction transmission line of transmission line transmitter is to adopt high-melting point metal tungsten filament or molybdenum filament, or the alloy conductive silk of tungsten, molybdenum, chromium.
6, by claim 1,2 described method for continuously detecting burning loss of blast furnace lining, it is characterized in that: 8-16 root conduction transmission line is to check the number to insert in special high temperature resistant, the anti abrasive high purity aluminium oxide telescopic respective wire hole.
7, by the described method for continuously detecting burning loss of blast furnace lining of claim 1, it is characterized in that: 1 single chip microcomputer minimum system and 8-16 rly., 8-16 root conduction transmission line and the suitable high purity aluminium oxide sleeve pipe of working as of an assembly, form 1 cover transmission line transmitter, with sealing iron casket 5 and water flowing cooling jacket 6 and fixedly steel pipe 9 fit together, directly be weldingly fixed on the furnace shell 10.
8, by the described method for continuously detecting burning loss of blast furnace lining of claim 1, it is characterized in that: peripheral hardware computer system 4 and multiple signals interface message processor (IMP) 3, can place apart from the body of heater control machine room far away, standoff distance is not more than 500m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97103824A CN1063227C (en) | 1997-04-02 | 1997-04-02 | Method for continuously detecting burning loss of blast furnace lining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97103824A CN1063227C (en) | 1997-04-02 | 1997-04-02 | Method for continuously detecting burning loss of blast furnace lining |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1195029A true CN1195029A (en) | 1998-10-07 |
| CN1063227C CN1063227C (en) | 2001-03-14 |
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ID=5166905
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97103824A Expired - Fee Related CN1063227C (en) | 1997-04-02 | 1997-04-02 | Method for continuously detecting burning loss of blast furnace lining |
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| Country | Link |
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| CN (1) | CN1063227C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103322794A (en) * | 2013-06-26 | 2013-09-25 | 中冶长天国际工程有限责任公司 | Method and device for detecting changes of rotary kiln lining |
| CN111154935A (en) * | 2020-01-06 | 2020-05-15 | 广西柳钢东信科技有限公司 | Device and system for detecting corrosion degree of molten iron runner based on cable fusing characteristic |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4269397A (en) * | 1979-08-24 | 1981-05-26 | Bethlehem Steel Corporation | Method for measuring the thickness of a refractory in a metallurgical apparatus |
| NL183317C (en) * | 1982-06-03 | 1988-09-16 | Hoogovens Groep Bv | MAIN OVEN WALL. |
| CN1018481B (en) * | 1991-02-04 | 1992-09-30 | 冶金工业部钢铁研究总院 | Device and method for measuring thickness of liner in blast furnace and industrial furnace |
| CN2220630Y (en) * | 1994-06-07 | 1996-02-21 | 鞍山市超声仪器厂 | Detecting instrument for blast furnace lining thickness |
| CN2235603Y (en) * | 1995-03-11 | 1996-09-18 | 包头钢铁学院 | On-line means for measuring thinkniss of lining of blast furnace |
-
1997
- 1997-04-02 CN CN97103824A patent/CN1063227C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103322794A (en) * | 2013-06-26 | 2013-09-25 | 中冶长天国际工程有限责任公司 | Method and device for detecting changes of rotary kiln lining |
| CN111154935A (en) * | 2020-01-06 | 2020-05-15 | 广西柳钢东信科技有限公司 | Device and system for detecting corrosion degree of molten iron runner based on cable fusing characteristic |
| CN111154935B (en) * | 2020-01-06 | 2023-05-12 | 广西柳钢东信科技有限公司 | Device and system for detecting erosion degree of molten iron runner based on cable fusing characteristics |
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| CN1063227C (en) | 2001-03-14 |
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Effective date of registration: 20041105 Address after: 114014 Yongning Street, Anshan Economic Development Zone, Liaoning, 9 Patentee after: Meisi Crack Detection Equipment Co Ltd, Anshan Address before: 114013, building two, Yongning Street Economic Development Zone, Tiexi District, Liaoning, Anshan Patentee before: Lu Mingxi |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20010314 Termination date: 20100402 |