CN110319688A - A kind of sintering pallet inside bed of material negative pressure field detecting method and device - Google Patents
A kind of sintering pallet inside bed of material negative pressure field detecting method and device Download PDFInfo
- Publication number
- CN110319688A CN110319688A CN201810272104.6A CN201810272104A CN110319688A CN 110319688 A CN110319688 A CN 110319688A CN 201810272104 A CN201810272104 A CN 201810272104A CN 110319688 A CN110319688 A CN 110319688A
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- pressure
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- side plate
- negative pressure
- detection device
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
- F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
- F27B9/26—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace on or in trucks, sleds, or containers
- F27B9/262—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace on or in trucks, sleds, or containers on or in trucks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
- F27B9/40—Arrangements of controlling or monitoring devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D21/00—Arrangements of monitoring devices; Arrangements of safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D21/00—Arrangements of monitoring devices; Arrangements of safety devices
- F27D21/0014—Devices for monitoring temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D21/00—Arrangements of monitoring devices; Arrangements of safety devices
- F27D2021/0007—Monitoring the pressure
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a kind of detection method and device of bed of material negative pressure field inside sintering pallet, this method comprises: the temperature T of detection bed of material inside different locationt；Detect the pressure P of different location or more instrument connectionA、PB；And the pressure differential deltap P formed according to upper and lower instrument connection, the gas flow rate V of different location is calculated using Bernoulli's theoremt.The technical issues of present invention is solved since sinter bed inner transverse and longitudinal upper negative pressure are unevenly distributed, and caused energy consumption and discharge amount of exhaust gas increase.The method of the present invention is not only easy to operate, and testing cost is relatively low, and test device can be recycled for multiple times, but also the reliability of data can be improved by numerical value such as a large amount of survey calculation temperature, pressure difference, gas flow rates.
Description
Technical field
The present invention relates to SINTERING TECHNOLOGY field, in particular to bed of material negative pressure field detecting side inside a kind of sintering pallet
Method and device detect temperature, the negative pressure, gas flow rate of each sintering region different location in sintering process.
Background technique
Every metallurgical performance of sinter, especially high temperature melt-dropping property will be got well compared with pellet, lump ore, can improve blast furnace
Gas permeability facilitates smooth operation of furnace, promotes blast fumance index, therefore, in Bf Burden wishes that sinter ratio reaches
70%~80% level.Blast furnace is larger to the demand of sinter in smelter at present, how in sintering high production rate item
Optimal control sintering process negative pressure under part reduces energy consumption, and reducing discharge amount of exhaust gas is worth us to go further to study.
In recent years, due to the gradually application of new process new equipment, so that the various quality index of China's sintering machine gradually obtain
Calendar operating rate to improvement, sintering machine is promoted steadily year by year, and sinter strength and qualification rate are also higher and higher, solid burnup by
Year decline, productivity of sintering machine and basicity tends towards stability, and illustrates that the quality of China's sinter gradually improves, and energy consumption index by
Year decline, but the usage factor of domestic sintering machine and South Korea's Pu item, modern times have a certain gap.
Country's sintering negative pressure only has the description of theoretical property to the influence of red flame layer thickness and migration velocity etc., and there are no do
Cross research in detail.Forefathers were once the ventilative rate for improving grid section, were examined to sintering pallet bed of material bottom grid section zone negative pressure
It surveys, solves to be unable to test the technical problem for leading to not determine whether fire grate bar width is suitable due to grid section zone negative pressure.Due to
The reason of gas permeability, negative pressure value is higher than grid section zone negative pressure value in the bed of material, refers to sintering production energy consumption index and sinter quality
Indicate more serious influence.But the device at present about negative pressure in detection sinter bed is incomplete, the position of detection is compared
Fixed, test point is relatively fewer, and negative pressure solenoid field can not be formed inside the bed of material, cannot further study negative pressure uniformity to burning
The influence of knot process.
Summary of the invention
The purpose of the present invention is to provide bed of material negative pressure field detecting method and devices inside a kind of sintering pallet, can measure
Each position temperature, pressure difference, gas flow rate data provide effective measurement means inside the bed of material, and solve due in sinter bed
Portion's negative pressure is unevenly distributed, and the thickness and migration velocity bring to flourishing layer influence, and then lead to energy consumption and discharge amount of exhaust gas
The technical issues of increase.
In order to achieve the above objectives, the technical scheme is that
A kind of detection method of sintering pallet inside bed of material negative pressure field comprising following steps:
A) interval is uniformly arranged three instrument connections along its length respectively on the side plate of sintering pallet two sides, and, side
For three instrument connections on plate along short transverse arranged for interval, the position of three instrument connections respectively corresponds sintering ore bed, burning in advance
Thermosphere and excessive moistening layer；
B) it is inserted into detection device respectively in the instrument connection, the detection device includes:
Ontology is a cylindrical body, interior to set a central passage along central axis, on the central passage front end or front
The lower guide hole for symmetrically respectively setting one and being connected to outside this body sidewall, as upper and lower part pressure test hole；
One Pitot tube is inserted in respectively in the body central channel, and front end respectively corresponds upper and lower part pressure test
Hole；
Pressure sensor is set to the Pitot tube rear end；
One thermocouple is inserted in the body central channel, and front end is located between the pressure test hole of upper and lower part, and
Connect a moisture recorder；
Computing controller, the pressure sensor and moisture recorder are electrically connected the computing controller；
Pressure sensor is measured in real time by pressure of the Pitot tube to detection device upper and lower ends；Pass through built-in heat
Galvanic couple measurement enters the gas temperature in detection device, and is continuously saved using moisture recorder to data；
C) negative pressure and temperature data in detection device detection sinter bed transverse direction；Be blown into gas inside the bed of material pass through it is upper
Portion pressure test hole enters detection device, and forms pressure difference, upper and lower part pressure test with the gas of low pressure instrument connection sucking
The pressure in hole is recorded in real time by pressure sensor；The gas temperature for entering detection device simultaneously is transferred to temperature by thermocouple
Recorder is continuously recorded；Then it by the pressure value in the upper and lower part pressure test hole measured by Pitot tube, is exerted using uncle
Sharp theorem calculates the air velocity of bed of material different location.
Preferably, according to the pressure value P in the upper and lower part pressure test hole of pressure sensor recordA、PB, fixed using Bernoulli Jacob
Reason calculates the air velocity V of bed of material different locationt, formula is as follows:
Wherein, Vt- air velocity, m/s；
PA- upper pressure tests pore pressure force, kgf/cm2；
PB- low pressure tests pore pressure force, kgf/cm2；
ρ-fluid density, g/cm3。
Preferably, when detecting sinter bed temperature, negative pressure, transverse test position is adjusted by detection device insertion depth
Section.
Preferably, three instrument connections, that is, upper, middle and lower instrument connection setting on the side plate of the sintering pallet side are as follows:
Upper instrument connection positioned at side plate top is apart from 200 ± 2mm of side plate upper edge, apart from 150 ± 2mm of side plate left margin；Positioned at side plate
The middle instrument connection at middle part is apart from side plate 710 ± 2mm of left margin, apart from 345 ± 2mm of side plate lower edge；Under side plate lower part
Apart from side plate, right, lower edge is 150 ± 2mm respectively to instrument connection.
Preferably, the instrument connection on the side plate is ellipse hole.
Detection device of the present invention for the detection method of bed of material negative pressure field inside sintering pallet comprising: ontology,
For a cylindrical body, in along central axis set a central passage, the central passage front end or front it is symmetrical above and below respectively set one with
The guide hole being connected to outside this body sidewall, as upper and lower part pressure test hole；It is logical to be inserted in the body central respectively for one Pitot tube
In road, front end respectively corresponds upper and lower part pressure test hole；Pressure sensor is set to the Pitot tube rear end；One thermoelectricity
It is even, it is inserted in the body central channel, front end is located between the pressure test hole of upper and lower part, and connects a thermograph
Instrument；Computing controller, the pressure sensor and moisture recorder are electrically connected the computing controller.
Preferably, the ontology front end is the cone head facilitated insertion into inside the bed of material.
The present invention establishes the negative pressure field of the bed of material, and root by the negative pressure of each position of the bed of material inside detection sintering pallet
Gas flow rate is calculated according to Bernoulli's theorem, by analyzing above data, it may be determined that influence the factor of negative pressure uniformity and bear
Uniformity is pressed to eventually find the measure of optimal control negative pressure field to the influence of sintering overall target.
The present invention has the advantages that
1. the present invention designs instrument connection in sintering pallet side plate, on the one hand such distribution mode is able to observe that entire
It is sintered the variation of each bed of material in operational process, on the other hand ensure that the uniformity of data measured distribution.
2. apparatus of the present invention are easy to operate, the continuous dynamic detection being suitble in sintering production process.
3. apparatus of the present invention can be recycled for multiple times, testing cost is relatively low.
4. the reliability that the data such as temperature, pressure difference, gas flow rate can be improved by a large amount of data measureds by the present invention.
Detailed description of the invention
Fig. 1 is the distribution map of sintering pallet side plate instrument connection of the present invention.
Fig. 2 is the structure sectional view of the detection device of bed of material negative pressure field inside sintering pallet of the present invention.
Specific embodiment
Referring to Fig.1, Fig. 2, the detection method of a kind of sintering pallet inside bed of material negative pressure field of the invention comprising as follows
Step:
A) on sintering pallet two sides side plate 100 respectively along its length interval be uniformly arranged three instrument connections 101,
102,103, and, three instrument connections 101,102,103 on side plate along short transverse arranged for interval, three instrument connections 101,
102,103 position respectively corresponds sintering ore bed, burning preliminary heating zone and excessive moistening layer；
B) it is inserted into detection device 200 respectively in the instrument connection, the detection device 200 includes:
Ontology 1 is a cylindrical body, in along central axis set a central passage 11,11 front end of central passage or
The front guide hole symmetrical above and below for respectively setting one and being connected to outside 1 side wall of ontology, as upper and lower part pressure test hole 12,13；
One Pitot tube 2 is inserted in respectively in 1 central passage 11 of ontology, and front end respectively corresponds the survey of upper and lower part pressure
Prospect hole 12,13；
Pressure sensor 3 is set to 2 rear end of Pitot tube；
One thermocouple 4 is inserted in the body central channel 11, and front end is located at upper and lower part pressure test hole 12,13
Between, and connect a moisture recorder 5；
Computing controller, the pressure sensor and moisture recorder are electrically connected the computing controller；
Pressure sensor is measured in real time by pressure of the Pitot tube to detection device upper and lower ends；Pass through built-in heat
Galvanic couple measurement enters the gas temperature in detection device, and is continuously saved using moisture recorder to data；
C) negative pressure and temperature data in detection device detection sinter bed transverse direction；Be blown into gas inside the bed of material pass through it is upper
Portion pressure test hole enters detection device, and forms pressure difference, upper and lower part pressure test with the gas of low pressure instrument connection sucking
The pressure in hole is recorded in real time by pressure sensor；The gas temperature for entering detection device simultaneously is transferred to temperature by thermocouple
Recorder is continuously recorded；Then it by the pressure value in the upper and lower part pressure test hole measured by Pitot tube, is exerted using uncle
Sharp theorem calculates the air velocity of bed of material different location.
Preferably, according to the pressure value P in the upper and lower part pressure test hole of pressure sensor recordA、PB, fixed using Bernoulli Jacob
Reason calculates the air velocity V of bed of material different locationt, formula is as follows:
Wherein, Vt- air velocity, m/s；
PA- upper pressure tests pore pressure force, kgf/cm2；
PB- low pressure tests pore pressure force, kgf/cm2；
ρ-fluid density, g/cm3。
Preferably, when detecting sinter bed temperature, negative pressure, transverse test position is adjusted by detection device insertion depth
Section.
Preferably, three tests on sintering pallet side side plate 100 (by taking side side plate 100 as an example, similarly hereinafter)
Hole 101~103 be upper, middle and lower instrument connection setting are as follows: positioned at side plate top upper instrument connection apart from side plate upper edge 200 ±
2mm, apart from 150 ± 2mm of side plate left margin；Middle instrument connection in the middle part of side plate is apart from side plate 710 ± 2mm of left margin, distance
345 ± 2mm of side plate lower edge；Apart from side plate, right, lower edge is 150 ± 2mm respectively to lower instrument connection positioned at side plate lower part.
Preferably, the instrument connection 101~103 on the side plate 100 is ellipse hole.
Referring to fig. 2, detection device 200 of the present invention for the detection method of bed of material negative pressure field inside sintering pallet,
Include:
Ontology 1 is a cylindrical body, in along central axis set a central passage 11,11 front end of central passage or
The front guide hole symmetrical above and below for respectively setting one and being connected to outside 1 side wall of ontology, as upper and lower part pressure test hole 12,13；
One Pitot tube 2 is inserted in respectively in 1 central passage 11 of ontology, and front end respectively corresponds the survey of upper and lower part pressure
Prospect hole 12,13；
Pressure sensor 3 is set to 2 rear end of Pitot tube；
One thermocouple 4 is inserted in the body central channel 11, and front end is located at upper and lower part pressure test hole 12,13
Between, and connect a moisture recorder 5；
Computing controller (not shown), the pressure sensor and moisture recorder are electrically connected the computing controller.
Preferably, the ontology front end is the cone head facilitated insertion into inside the bed of material, inside the equipment insertion bed of material.
Measurement method is as follows:
It will test device to be inserted into inside sinter bed by instrument connection, detect the negative pressure and temperature number in sinter bed transverse direction
According to the depth for being inserted into the bed of material by changing detection device is realized；The longitudinal negative pressure of the bed of material and temperature data are detected, then is needed
It is realized by changing the position of instrument connection；It is blown into gas inside the bed of material and pipeline is entered by upper pressure instrument connection, and with
The gas of low pressure instrument connection sucking forms pressure difference, and the pressure of two instrument connections is recorded in real time by pressure sensor；Together
When enter pipeline the temperature of gas can be transferred to moisture recorder by the thermocouple of steel pipe center, continuously remembered
Record；Then it by the pressure value of the instrument connection up and down of Pitot tube measurement, utilizes Bernoulli's theorem: calculating the gas velocity of different location
Degree；It is saturating that negative pressure, temperature and the gas flow rate data being calculated obtained by measurement constructs the bed of material based on negative pressure variation
Gas model determines the influence of the factor for influencing negative pressure uniformity and negative pressure uniformity to sintering overall target, finds optimization control
The measure of negative pressure field processed.
Claims (7)
1. the detection method of bed of material negative pressure field inside a kind of sintering pallet, which comprises the steps of:
A) interval is uniformly arranged three instrument connections along its length respectively on the side plate of sintering pallet two sides, and, on side plate
Three instrument connections along short transverse arranged for interval, the position of three instrument connections respectively correspond sintering ore bed, burning preliminary heating zone with
And excessive moistening layer；
B) it is inserted into detection device respectively in the instrument connection, the detection device includes:
Ontology is a cylindrical body, interior to set a central passage along central axis, right above and below the central passage front end or front
Claim the guide hole for respectively setting one with being connected to outside this body sidewall, as upper and lower part pressure test hole；
One Pitot tube is inserted in respectively in the body central channel, and front end respectively corresponds upper and lower part pressure test hole；
Pressure sensor is set to the Pitot tube rear end；
One thermocouple is inserted in the body central channel, and front end is located between the pressure test hole of upper and lower part, and connects
One moisture recorder；
Computing controller, the pressure sensor and moisture recorder are electrically connected the computing controller；
Pressure sensor is measured in real time by pressure of the Pitot tube to detection device upper and lower ends；Pass through built-in thermocouple
Measurement enters the gas temperature in detection device, and is continuously saved using moisture recorder to data；
C) negative pressure and temperature data in detection device detection sinter bed transverse direction；The gas inside the bed of material is blown into press by top
Power instrument connection enters detection device, and forms pressure difference with the gas of low pressure instrument connection sucking, upper and lower part pressure test hole
Pressure is recorded in real time by pressure sensor；The gas temperature for entering detection device simultaneously is transferred to thermograph by thermocouple
Instrument is continuously recorded；Then fixed using Bernoulli Jacob by the pressure value in the upper and lower part pressure test hole measured by Pitot tube
Adjust out the air velocity of bed of material different location.
2. the detection method of bed of material negative pressure field inside sintering pallet as described in claim 1, which is characterized in that according to pressure
The pressure value P in the upper and lower part pressure test hole of sensor recordA、PB, using Bernoulli's theorem, calculate the gas of bed of material different location
Flow velocity degree Vt, formula is as follows:
Wherein, Vt- air velocity, m/s；
PA- upper pressure tests pore pressure force, kgf/cm2；
PB- low pressure tests pore pressure force, kgf/cm2；
ρ-fluid density, g/cm3。
3. the detection method of bed of material negative pressure field inside sintering pallet as described in claim 1, which is characterized in that detection sintering
When material layer temperature, negative pressure, transverse test position is adjusted by detection device insertion depth.
4. the detection method of bed of material negative pressure field inside sintering pallet as described in claim 1, which is characterized in that the sintering
The setting of three instrument connections on the side plate of machine trolley side are as follows: positioned at side plate top instrument connection apart from side plate upper edge 200 ±
2mm, apart from 150 ± 2mm of side plate left margin；Instrument connection in the middle part of side plate is apart from side plate 710 ± 2mm of left margin, apart from side
345 ± 2mm of plate lower edge；Apart from side plate, right, lower edge is 150 ± 2mm respectively to instrument connection positioned at side plate lower part.
5. the detection method of bed of material negative pressure field inside sintering pallet as claimed in claim 1 or 3, which is characterized in that described
Instrument connection on side plate is ellipse hole.
6. special for the detection device of the detection method of bed of material negative pressure field inside sintering pallet as described in claim 1
Sign is, comprising:
Ontology is a cylindrical body, interior to set a central passage along central axis, right above and below the central passage front end or front
Claim the guide hole for respectively setting one with being connected to outside this body sidewall, as upper and lower part pressure test hole；
One Pitot tube is inserted in respectively in the body central channel, and front end respectively corresponds upper and lower part pressure test hole；
Pressure sensor is set to the Pitot tube rear end；
One thermocouple is inserted in the body central channel, and front end is located between the pressure test hole of upper and lower part, and connects
One moisture recorder；
Computing controller, the pressure sensor and moisture recorder are electrically connected the computing controller.
7. the detection device of the detection method of bed of material negative pressure field, feature exist inside sintering pallet as claimed in claim 6
In the ontology front end is the cone head facilitated insertion into inside the bed of material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810272104.6A CN110319688B (en) | 2018-03-29 | 2018-03-29 | Method and device for detecting negative pressure field of material layer in sintering machine trolley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810272104.6A CN110319688B (en) | 2018-03-29 | 2018-03-29 | Method and device for detecting negative pressure field of material layer in sintering machine trolley |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110319688A true CN110319688A (en) | 2019-10-11 |
| CN110319688B CN110319688B (en) | 2021-01-12 |
Family
ID=68110880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810272104.6A Active CN110319688B (en) | 2018-03-29 | 2018-03-29 | Method and device for detecting negative pressure field of material layer in sintering machine trolley |
Country Status (1)
| Country | Link |
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| CN (1) | CN110319688B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114965575A (en) * | 2022-04-24 | 2022-08-30 | 北京智冶互联科技有限公司 | Sintering uniformity identification method and system based on thermal imaging |
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| DE4436205C1 (en) * | 1994-09-29 | 1996-01-18 | Ernst Dr Ing Ulrich | Differentiated carbon analyser |
| CN101354290A (en) * | 2008-09-08 | 2009-01-28 | 中冶长天国际工程有限责任公司 | Device for detecting temperature of sintered trolley and use method thereof, and sintered trolley |
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| CN114965575A (en) * | 2022-04-24 | 2022-08-30 | 北京智冶互联科技有限公司 | Sintering uniformity identification method and system based on thermal imaging |
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| CN110319688B (en) | 2021-01-12 |
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