CN204434646U - A kind of can Real-Time Monitoring blast furnace charge level change radar scanner - Google Patents
A kind of can Real-Time Monitoring blast furnace charge level change radar scanner Download PDFInfo
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- CN204434646U CN204434646U CN201420853174.8U CN201420853174U CN204434646U CN 204434646 U CN204434646 U CN 204434646U CN 201420853174 U CN201420853174 U CN 201420853174U CN 204434646 U CN204434646 U CN 204434646U
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Abstract
A kind of can Real-Time Monitoring blast furnace charge level change radar scanner, the real-time and verity that ensure that charge level imaging are in place set, radar scanner is goed deep into high furnace interior, by the rotation of Machine Design transmission mechanism control antenna, realize at select location, by the consideration of optimum angular field of view and optimum finding range, realize the scanning to blast furnace half charge level.
Description
Technical field
The utility model relates to field of metallurgy and uses microwave technology to carry out the occasion of shape of charge level measurement, has been applied to the severe environment such as high temperature in industrial production, high pressure, high dust at present, has been specially adapted to the measurement of shape of charge level under blast furnace ironmaking environments in metallurgy industry.
Background technology
The process of blast-furnace smelting in Iron And Steel Industry, constantly add the process that furnace charge carries out melting continuously, wherein the control of roof material distributing shape is very important step, therefore shape of charge level information in blast furnace is obtained real-time and accurately, for adjustment distributing mode, the distribution of control blast furnace gas, judge that the working of a furnace has very important effect, and then, make Active hearth condition, smooth operation of furnace, reduction coke ratio, save energy, stablize high yield, reduce furnace wall erosion and extend blast furnace campaign, improve blast furnace ironmaking productivity effect.
China is big steel country, and the development of metallurgy industry to country is significant.Blast furnace internal work environment is extremely severe: high temperature, high pressure and high dust, makes its internal work mechanism become black box always, is not understood by people.In blast furnace, the distribution shape of charge level is to energy-saving and emission-reduction in blast fumance, improve production capacity, efficiency utilization resource and safety in production etc. have important guiding value, therefore obtain charge surface shape in blast information accurately in real time, for adjustment distributing mode, the distribution of control blast furnace gas, judge that the working of a furnace has important effect.
The measurement of current blast furnace in metallurgical industry charge level mainly adopts three kinds of methods: the indirect method of measurement; Direct contact measuring method; Direct noncontact measuring method.
The method of indirect inspection charge level mainly contains cross temperature method and infrared thermography.Cross temperature method is by the distribution of the monitoring of different positions mounting temperature sensor on thermometric cross bar coal gas, and indirectly infer according to temperature information and shape of charge level, shortcoming is that Measuring Time is long, and measuring error is large; Infrared thermal imaging technique extrapolates charge level information by measuring the distribution of charge level surface heat, but comparatively large by baneful influence in blast furnace, cannot work long hours.
What traditional mechanical stock rod adopted charge level is contact type measurement, and mechanical stock rod is installed in the position different blast furnace roof three, and shortcoming is bulky, can only reflect the dot information of charge level height, can not show the shape of charge level in real time.
Mainly adopt two kinds of direct non-contact measurement methods both at home and abroad at present: laser method and microwave method.Laser has very strong directivity and coherency, therefore during vertical incidence, reflected signal strength is high, but have that the reflected signal when certain incident angle is very weak does not have even reflected signal to receive, and in blast furnace in high dust situation Laser Measuring obtain charge level information and have very large deviation and cost is higher.
Another kind is microwave radar level gage, and high-frequency microwave signal has the features such as the little and immunity from interference of good directionality, emission angle is strong, and current radar level gauge adopts spot measurement can not draw the multidimensional information of charge level.
The utility model devises a kind of new mechanical scanning type radar, radar scanner is goed deep into high furnace interior, by the rotation of Machine Design transmission mechanism control antenna, realizes at select location, by the consideration of optimum angular field of view and optimum finding range, realize the scanning to blast furnace half charge level.
Technology relevant to this patent is both at home and abroad as follows:
Chinese invention patent 01126452.7, " blast furnace top full-charge-level millimeter-wave three-dimensional imaging instrument ", Baogang Stocks Trading Co. of applying unit, is characterized in: adopt stove to install outward, add lens wave transparent, there is window easily contaminated, the problem that scanning angle is limited.This patent is installed outward at stove, and the design installs in stove, and environment is relatively more severe, and irradiating angle increases, and can increase scanning area coverage, and antenna can be retracted, and effectively extends the work-ing life of radar scanner while opening smaller hole.
Chinese invention patent: 200910089676.1, " a kind of device of itinerantly measuring blast furnace charge level ", applying unit's Shoudu Iron and Steel Co share, adopt the method for the cross rod movement of two-dimentional machinery scanning, being arranged on can along on the brace of certain some rotation on anchor, utilize the mobile rotation etc. of mechanism to enable radar measure each point of blast furnace charge level, advantage is the shape of charge level and the lowering speed that utilize a radargrammetry to go out blast furnace radial direction.
Chinese invention patent: 200620150006.8, " a kind of radar stock rod for measuring charge level height in blast furnace ", Tianjin iron and steel stock company of applying unit; Adopt the minute movement of corrugated tube to regulate radargrammetry angle, the scope of adjustable angle is quite limited, cannot accomplish that large-scale charge level scans.
Chinese invention patent: 200920014534.4, " a kind of radar measuring device in blast furnace burden surface shape ", applying unit's Anshan iron and steel plant share.Adopt universal spherical tightness system two-dimensional measurement shape of charge level, simple and reasonable, but do not have the automatic system of radar to protect.
Chinese invention patent: 200710064497.3, " charge surface shape in blast dynamic solid Monitoring systems and detection method ", that applicant is after compared for multiple patented method, a kind of new detection method proposed, be characterized in: in Top of BF, multiple stage radar is installed and charge surface shape in blast is detected, the charge level altitude information radargrammetry distributed with involute urve gone out is benchmark, again with the dynamic charge level curve of corresponding algorithm matching, dynamic shape of charge level preferably can be simulated, but the method radar is the fixed installation of several radar, without moving-member.
Chinese invention patent 201010554129.9, " measuring system for charge level of permanent type blast furnace ", Zhongguo Iron & Steel Co., Ltd. of applying unit.This patent and the utility model contrast as follows:
(1) power unit of this measurement system comprises power set, actuated element and movable bridge joint group.This power set connects antenna by slide bar, slide block, connecting rod three part, and this patent adopts the swivel block of particular design to be directly enclosed within antenna, and eliminate shaft portion, structure is simpler.In addition, the integrated radar of range cells of this measurement system, integral-rotation is heavier, promotes inertia larger.This patent range-only radar adopts split-type structural, and independently metallurgy high temperature dedicated antenna and Microwave emission box are arranged on antenna top, rotate around multi-directional ball.Other Radar Signal Processing plate box, is fixed on rotation table device, does feeding movement with driven by motor leading screw.
(2) in this system, refrigerating unit is just purged in blast furnace by nitrogen, and adopt nitrogen cooling device hydrous water device for cooling in this patent, cooling effect is obvious.And, this patent nitrogen directly passes into from the air inlet port of sleeve cap, two production wells lay respectively at sleeve bottommost and microwave channel, size is 1:1, suitably can certainly adjust the ratio of two perforate sizes, object ensures that guarantee the unobstructed of antenna microwave passage, the production well of sleeve bottommost can take away the heat in cylinder simultaneously by inner antenna to blast furnace internal sweep.
(3) likely there is rotation phenomenon in the multi-directional ball in this system, is difficult to the movement effects reaching expection.In this patent, improvement and design is carried out to multi-directional ball or slide block, the hidden danger that rotation brings can be prevented.
Chinese invention patent application number: CN201210404903.7, " a kind of mechanical scan radar set of novel measurement charge surface shape in blast ", University of Science & Technology, Beijing of applying unit, device is containing a mechanical rotation The Cloud Terrace, The Cloud Terrace there is the Mechanical Moving of two vertical direction, antenna is moved with three-dimensional Arbitrary Rotation.Its physical construction is comparatively complicated, adds and controls difficulty and maintenance cost.
HOII P NL-7707-178 " Device for determining charging distribution in blast furnace ", for double-antenna structure, be arranged on spherical joint, antenna direction can rotate with blast-furnace rotating distributor, have and measure shape of charge level and the dynamic ability of sedimentation, be applicable to rotary distributing type blast furnace.But be reflected into charge level because radar points to chute, belong to radar wave and be refracted on charge level by rotating equipment, a kind of method of indirect calculation charge level height.
European patent ER G017-664 " Mounting Radar Antenna on Shaft Furnace ".For double-antenna structure, be arranged on bottom pipe.Measurement is that pipe passes in shaft sidewall horizontal radial direction insertion stove, and make beam of an antenna in stove, form one dimension radial scan by the rotation of pipe, do not possess full-charge-level imaging shape ability, and pipe is heavy, the contraction time of pipe is long.
Other both at home and abroad also have class Laser Scannings, and as " method and system of laser detection of shape of charge level ", (200810240835.9) obtain shape of charge level based on the method for laser and image procossing, different with microwave method principle of the present utility model.
As can be seen from the domestic and international Patents be associated with this patent, the utility model has the advantage of:
The imaging that 1 only installs a radar on blast furnace, a motor can complete charge level.The angle of rotation of combine antenna, cover the scope of charge level and the installation of high furnace interior chute and cross temperature or movement position, offset from perpendicular 0-12 °, Rational choice radar sleeve tilts to install, and directly over the radial center of radius of blast furnace, ensure real-time and the verity of the imaging of charge level.
The special spline design of 2 antennas, i.e. the particular design of multi-directional ball and slide block, all can avoid the rotation phenomenon that may occur during antenna radial motion.Thus Microwave emission box can directly be connected with microwave channel, save microwave wire loop joint, improve microwave utilization ratio; And prevent the collision between other devices or wire being wound, ensure the reliability of system.
3 sealing rotation table devices, motor and leading screw combine and seal by this device, form a set of motor module, prevent leading screw from entering ash and occurring the mechanical faults such as stuck.And in turntable outside, optoelectronic switch is installed, accurately can judges the zero-bit of antenna, be convenient to the debugging that resets.
4 mechanical drives, the swivel block of particular design directly connects antenna microwave passage, and motor leading screw rotation table device does axial feed motion by slide bar band movable slider, and antenna does radial scan campaign with swivel block simultaneously.
Utility model content
Radar scanner is goed deep into high furnace interior by the utility model, by the rotation of Machine Design transmission mechanism control antenna, realizes at select location, by the consideration of optimum angular field of view and optimum finding range, realizes the scanning to blast furnace half charge level.
Concrete technical scheme is as follows:
A kind of can Real-Time Monitoring blast furnace charge level change radar scanner, it is characterized in that, this radar scanner installation position selection near blast furnace fan housing upper position, ensure vertical incidence charge level time, the left and right angle of its mechanical scanning is equal or close, and vertical angle controls within ± 30 degree; This radar scanner comprises radar fixed support sleeve, mechanical scanning radar body; Wherein, described mechanical scanning radar body comprises: radar body sleeve and refrigerating unit, mechanical scanner; Described radar body sleeve is the notch cuttype cylindrical structure of upper and lower two cylinders, top is large cylinder, and bottom is little cylinder, solid mechanical transmission mechanism bottom large cylinder, radar scanner gos deep into high furnace interior by bottom little cylinder, and radar body sleeve and high furnace interior are isolated by rotary joint; Described radar scanner includes antenna spline structure, this antenna spline structure by transforming multi-directional ball or slide block, to prevent antenna rotation; Described mechanical drive structure is that swivel block inside being inlayed PTFE material directly matches with the external diameter of radar scanner, does axial feed motion by slide bar band movable slider, and antenna does radial scan campaign with slide block simultaneously; Described radar scanner also comprises monitoring device, and this monitoring device comprises video acquisition device and temperature collecting device.
Wherein, adopt multi-directional ball to prevent the structure of antenna rotation from being: the symmetrical both sides of multi-directional ball process two and pick up the ears, and pick up the ears to coordinate with universal joint with upper cover plate slot respectively in lower tray, restriction universal joint rotates in blast furnace radial scan direction thus; Or, directly a part is cut away to universal joint upper part, and process mating surface on upper cover plate, ensure that universal joint only rotates in blast furnace radial scan direction.
Wherein, adopt slide block to prevent the structure of antenna rotation from being: on slide block, increase a spline projection or sunk structure, antenna microwave passage direction of motion fixed, namely antenna can only rotate along the direction fixed, and oneself can not rotate around antenna axle center.
Wherein, described radar fixed support sleeve design top is notch cuttype, and bottom is that shape of a hoof carbon steel stop sleeve is welded on blast furnace, and notch cuttype sleeve weld gusset improves bearing stress intensity and coordinates to install with radar body sleeve saves space; Shape of a hoof sleeve gos deep into high furnace interior 30-50mm and parallel with blast furnace inwall.
Wherein, weld two rectangular box in described large cylinder both sides, install servomotor and radar hardware circuit respectively, rectangular box and radar sleeve inner adopt sealing method to completely cut off.
Wherein, described mechanical drive and radar scanner, be arranged in sleeve, antenna is connected with high temperature leading screw with web plate by slide block, leading screw is fixed on two ends on rail plate slide block and is supported by bearing and bearing support, realized left and right feeding movement and antenna slide block the sliding up and down along microwave channel of rail plate slide block by servo motor transmission moment, thus drive antenna to carry out radial scan to charge level.
Wherein, described leading screw and motor combination are sealed, form a set of motor module rotation table device, dust can not only be blocked, leading screw is effectively protected, and at its outside installation optoelectronic switch, the zero-bit of marker antenna can be carried out, this rotation table device is conducive to reducing fault, ensureing leading screw precision, and is convenient to the debugging of motor.
Wherein, described video acquisition device adopts the camera with night vision function, the kinestate of Real Time Observation radar inner mechanism, and mechanism has trouble free etc.; In addition, coordinated by video signal acquisition device refrigerating unit to be installed on bottom little cylinder, towards high furnace interior, pass high furnace interior chute and charge level video image back.
Wherein, described temperature collecting device at the inner mounting temperature sensor of radar body sleeve, the working temperature of real-time police radar signal pickup assembly, when temperature is too high, motor returns stop bit, systemic protective power-off; In addition, temperature sensor is placed in bottom little cylinder, can Real-Time Monitoring furnace roof blast furnace internal temperature information.
Wherein, described refrigerating unit comprises nitrogen cooling device and water cooling plant; Described nitrogen cooling device is blown into nitrogen by radar sleeve flange dish, high temperature leading screw and bearing are directly purged and realizes cooling, radar sleeve is tightness system, and nitrogen is blown into box horn inside via the hole on microwave channel and realizes lowering the temperature and being finally blown into high furnace interior to antenna; Little cylinder inside water jacket is cooled whole metallic cavity by described water cooling plant, comprises the cooling to multi-directional ball, prevents the generation of hot metal expansion locking phenomenon.
Accompanying drawing explanation
Fig. 1 radar installation site schematic diagram
The assembling of Fig. 2 radar and schematic internal view
The rotary seal of Fig. 3 universal joint and water-cooled schematic diagram
Fig. 4 universal joint modification scheme
Fig. 5 mechanical scanning mechanism schematic diagram
Fig. 6 mechanical scanning slipper schematic diagram
Fig. 7 mechanical drive general illustration
Fig. 8 microwave channel slide block
Fig. 9 slipper bearing retaining element
Figure 10 radar dedicated antenna schematic diagram
Figure 11 water cooling box
[main element nomenclature]
1 radar socket cover
2 large cylinders
3 little cylinders
4 radar welded sleeves
5 high temperature antennas
6 multi-directional ball
7 water jackets
At the bottom of 8 sleeves
9 lower trays
10 upper cover plates
11 flutings
Ear on the left of in the of 12
Ear on the right side of in the of 13
14 groovings
15 high temperature leading screws
16 leading screw bearings
17 bearing supports
18 turret base
19 rail plates
20 sliding sliders
21 web plate mounting blocks
22 antenna slide blocks
23 leading screw mounting flanges
24 motor mounting flanges
25 servomotors
26 fixing seal blocks
27 web plates
28 bearing support mounting blocks
29 slipper bearings
30 microwave channels
31 sealing rotation table devices
32 signal-processing board boxes
33 Microwave emission boxes
34 slide bars
35 slip recess
36 microwave channel top union levers
37 microwave channel glissile segments
38 PTFE microwave-medium fasteners
39 microwave channel extension tubes
40 box horns
41 nitrogen pores
42 water jacket shells
43 cooling water inlet pipes
44 universal ball covers
45 cooling water outlet pipes.
Embodiment
Roughly set forth in all its bearings below and inventive concept of the present utility model be described:
Select mechanical scanning radar installation site
A position of blast furnace roof is selected to install, selected location according to being: and current existing single-point blast furnace radar is installed difference and is: ordinary blast radar to be arranged on sealing cover near mechanical stock rod, measure the material level change of a point, and mechanical scanning radar is also arranged on sealing cover, but position must be selected with charge level vertical irradiation to the center position along blast furnace radius, ensure that the overlay area left and right angle of incident angle to charge level of perforate is equal, the stove heart and position, furnace wall can be scanned.The setting angle of radar also can be selected and charge level vertical angle 0-12 degree, and object prevents from mechanism and shell of blast furnace from interfering with each other to run into, and rational installation site is equal with the incident angle of left and right radar wave is good.Blast furnace upcast also should be avoided in installation site, large square hole and manhole, is beating near blast furnace fan housing uppermost position the hole that diameter is 300-500mm.
Mechanical scanning radar comprises following two integral parts: radar fixed support sleeve, mechanical scanning radar body.
Radar fixed support sleeve design top is notch cuttype, bottom is that shape of a hoof carbon steel stop sleeve is welded on blast furnace, and notch cuttype sleeve weld gusset improves bearing stress intensity and can coordinate with radar body sleeve to install saves space; Shape of a hoof sleeve gos deep into high furnace interior 30-50mm and parallel with blast furnace inwall, and its stress intensity does not more stretch in stove and improves three times.Stop sleeve and blast furnace welding process are that full weld prevents gas overflowing in blast furnace, and interior welds barb is used for smearing fire-proof mud and prevents sleeve to be subject to Thermal cracking.
Mechanical scanning radar body comprises: radar body sleeve and refrigerating unit, mechanical scanner, data communication apparatus.
Radar body sleeve structure: cylinder is the notch cuttype design of upper and lower two cylinders, is large cylinder above, is convenient to the installation mechanical scanner that has living space, bottom is little cylinder, and be connected with the pairing of radar fixed muffle flange, little cylinder size is little, bore size like this on blast furnace is also little, reduces danger coefficient.Large sleeve bottom solid mechanical transmission mechanism, radar scanner is by going deep into high furnace interior bottom small sleeve, and sleeve and high furnace interior are isolated by rotary joint; 3-6 kilogram of nitrogen is filled with in sleeve, cooling mechanical rotary device, and via microwave channel, nitrogen is blown to antenna, PTFE rod is microwave transmission medium and plays pressure-bearing effect, nitrogen cooled and purges box horn inside, preventing high furnace gas from entering sleeve inner blocking antenna.
The structure of large cylinder: weld two rectangular box in cylinder both sides, installs servomotor and radar hardware circuit respectively, and rectangular box and radar sleeve inner adopt sealing method to completely cut off, and object is overflowed for preventing nitrogen and completely cuts off high temperature; At the bottom position of large cylinder, can install mechanical drive, comprise high temperature leading screw, bearing and bearing support, above-mentioned mechanism achieves the reciprocation cycle scanning of antenna.
Fit structure between mechanical rotary device and the microwave channel of antenna: design a kind of motor axial reciprocating and move the physical construction becoming and rotate, i.e. leading screw feeding movement, through the swivel block of particular design, PTFE material is inlayed for lubrication block in slide block inside, match with the external diameter of antenna microwave passage, making to-and-fro movement become antenna is that fulcrum does radial scan rotation at high furnace interior with multi-directional ball, the horizontal reciprocating movement of general selection 0.2-0.4 rice, is converted to and is less than ± the rotary scanning motion of 30 degree.
Antenna spline structure: the feature of two kinds of elimination antenna rotation designs of multi-directional ball: scheme one, the symmetrical both sides of multi-directional ball process two and pick up the ears, and pick up the ears to coordinate with universal joint with upper cover plate is slotted respectively in lower tray, limit universal joint thus and only rotate in blast furnace radial scan direction; Scheme two, directly cuts away a part to universal joint upper part, and process mating surface on upper cover plate, ensures that universal joint only rotates in blast furnace radial scan direction.The feature of the elimination antenna rotation design of slide block: scheme three, increases projection or the sunk structure of a spline, can be designed to different shape, as long as play the object preventing circular antenna rotation inside the circular rotatable slide block through particular design.Owing to adding spline structure design, Microwave emission box just can directly be connected with microwave channel, and the link of microwave line in the middle of reducing, also can the problem such as solving device frictional impact and wire being wound.
Radar machinery reciprocator: adopt sealing rotation table device, motor and leading screw are made into a set of module, stop foreign matter by sealing, keep the precision of leading screw, reduce mechanical fault.And in turntable outside, optoelectronic switch is installed, solves and search the problem such as zero point and radar scanner reset in the non-disconnectable situation of sealing.
The overall cooling structure of radar body construction: the utility model adopts nitrogen purging hydrous water device for cooling to realize cooling to mechanical scanning radar, ensures that machinery and radar normally work.3-6 kilogram of pressure nitrogen gas is blown into by radar sleeve flange dish, high temperature leading screw and bearing are directly purged and realizes cooling, radar sleeve is tightness system, and nitrogen is blown into box horn inside via the hole on microwave channel and realizes lowering the temperature and being finally blown into high furnace interior to antenna; Little cylinder inside water jacket cools whole metallic cavity, especially to the cooling of multi-directional ball, prevents the generation of hot metal expansion locking phenomenon.
Video monitoring apparatus on large cylinder position: adopt the camera with night vision function, or the camera of known any video monitoring function, after radar bonnet seals completely, extract vision signal, can the kinestate of Real Time Observation radar inner mechanism, mechanism has trouble free etc.
Video monitoring apparatus: coordinated by video signal acquisition device refrigerating unit to be installed on bottom little cylinder, towards high furnace interior, passes high furnace interior chute and charge level video image back.
Radar body sleeve is installed temperature signal measurement device: the utility model radar sleeve inner installs 2-3 road temperature sensor, be arranged on motor box and radar sleeve inner respectively, the working temperature of real-time police radar signal pickup assembly, temperature is higher than auto-breaking after the machine operation upper limit and report to the police, and prevents motor damaged; In addition, temperature sensor is placed in bottom little cylinder, can Real-Time Monitoring furnace roof blast furnace internal temperature information.
Below in conjunction with the drawings and specific embodiments, the technical solution of the utility model is described in detail.
Fig. 1 is the installation site of radar on blast furnace and angle, and radar is arranged on the example outside blast furnace.Furnace roof perforate is by the perforate of overall blast furnace installation plan, through hole between diameter of phi 300-600m, position of opening is: be highly along 1650mm under furnace roof, horizontal direction is positioned at apart from gas up take 800mm place on the left of large manhole opposite, and luffing angle θ calculates by field requirement and is defined as 133 ° (be 9 ° with vertical direction angles).
Fig. 2 is mechanical scanning radar system basic comprising, mainly comprises: radar body sleeve (comprising large cylinder 2 and little cylinder 3), radar welded sleeve 4, physical construction and field control case.Radar welded sleeve is welded on blast furnace roof punching place, and welding process is full weld, prevents gas overflowing in blast furnace; Radar sleeve inner has water-cooled and air cooling structure device, nitrogen is blown into radar sleeve inner by being arranged on pore on ring flange, venting hole via microwave channel place is blown into high furnace interior, realize lowering the temperature to radar body sleeve and antenna 5, and on antenna carry out purging prevent blocking and affect signal quality, at little cylinder bottom design water jacket 7, be mainly used in the cooling to rotary sealing appts multi-directional ball 6, prevent metallic high temperature expansion locking phenomenon.
Fig. 3 is multi-directional ball rotary seal and water cooling plant, multi-directional ball 6 is stainless steel, because multi-directional ball sense of rotation does not have the restriction of degree of freedom, in actual production, the multi-directional ball Microwave emission box 33 that antenna drives in the meeting of rotation of unwanted direction is to Fig. 7 produces the hidden danger of collision and wire being wound.Therefore carry out the Curve guide impeller of scheme: scheme one, the symmetrical both sides of multi-directional ball process two and pick up the ears 12,13, and 11 pick up the ears to coordinate with universal joint with upper cover plate 10 is slotted respectively in lower tray 9, and restriction multi-directional ball is rotated in blast furnace radial scan direction thus; Scheme two, directly cuts away a part to multi-directional ball upper part, forms grooving 14, and process mating surface on upper cover plate, and ensure that multi-directional ball is only rotated in blast furnace radial scan direction, Fig. 4 is shown in the transformation of two schemes to multi-directional ball.Scheme three, increases the structure of a spline, can be designed to different shape, the high temperature antenna of pairing also design identical shape, only plays the object preventing circular antenna rotation inside the antenna slide block of the circular rotatable through particular design.
Adopt lower tray 9, the mode of upper cover plate 10 is fixed sealing, at cover plate and pallet and universal joint contact position machined grooves filled high-temperature lubricant medium PTFE, and ensure the gap between metal; Upper cover plate 10 is designed to water jacket, for going deep into the little cylinder partial warm down of high furnace interior, especially to the cooling at multi-directional ball place, coordinating prevent high temperature locking double insurance with high temperature lubricating packing ring PTFE.
Fig. 5 is mechanical transmission structure and high temperature antenna, is arranged in radar sleeve.Antenna is connected with high temperature leading screw 15 with web plate 27 by slide block 22, leading screw is fixed on two ends on rail plate slide block 19,20 and is supported by bearing 16 and bearing support 17, realized left and right feeding movement and antenna slide block 22 the sliding up and down along microwave channel of rail plate slide block 19,20 by servomotor 25 driving torque, thus drive antenna to carry out radial scan to charge level.Actual machine drive mechanism finished product is the sealing and dustproof rotation table device that motor and leading screw combine, safeguards system reliability of operation and stability.
Fig. 6 is the design of antenna swivel block, and web plate moving belt movable slider 22 slides up and down on microwave channel 30, and slide block 22 is fixed on bearing 29 by bearing support mounting block 28, finally realizes the radial scan of antenna in blast furnace.
Fig. 7 is mechanical drive general illustration, and 31 is sealing rotation table device cross section, and signal-processing board box 32 is fixed on turntable top, does the feeding movement in vertical paper direction with leading screw 15.Microwave emission box 33 is fixed on the top of antenna microwave passage 30, is directly connected with microwave channel, does the rotary motion in vertical paper direction, be connected with signal-processing board box 32 by control line with antenna.Slide bar 34 is connected with swivel block 22, and swivel block 22 is fixed on antenna microwave passage, and motor leading screw does the feeding movement in vertical paper direction with movable slider 22 by slide bar 34, thus drives antenna to rotate along vertical paper direction.Such as, when leading screw moves to the direction entering paper, antenna microwave passage is positioned at the part on multi-directional ball 6 top to the direction motion entering paper, and the part being positioned at multi-directional ball 6 bottom is moved to the direction away from paper, drives antenna to realize shuttle-scanning.
Fig. 8 is slide block schematic diagram, the embedded PTFE material of its further groove 35, PTFE material directly and microwave channel 30 contact friction slide, prevent direct friction generation high temperature locking phenomenon between metal.Another kind of method of design: remove the PTFE material that groove 35 is embedded, now there will be the space of 0.5-1mm between microwave channel glissile segment 37 and bearing support mounting block, under not being the extra high situation of requirement to scanning accuracy requirement, occur little space, motor runs and also can finish the work steadily in the long term.Fig. 9 is bearing support mounting block.
Mechanical scanning high temperature radar scanner is as Figure 10, and consider antenna microwave passageway machining difficulty problem, microwave channel is extended for three sections: microwave channel glissile segment 37, multi-directional ball part 6 and microwave channel extension tube 39; 38 is PTFE microwave-medium fastener, improves microwave signal quality and prevents blast furnace internal gas from overflowing in microwave channel; 41 is that radar sleeve is sealed structure at sustained height nitrogen pore incident at a certain angle, and nitrogen can only rotate blowout from nitrogen pore, cooled microwave passage antenna and carry out purging dedusting to antenna.
The specific design of water jacket is shown in Figure 11, and water jacket is that radar scanner has reserved scanning pattern, designs universal ball cover 44 at the bottom of water tank, and edge fluting Filled PTEF medium, is fixed on bottom little cylinder; Water coolant enters water tank around multi-directional ball by water inlet pipe 43, and cools radar body sleeve, flows out water tank by by rising pipe 45, plays the object cooled.The size of water jacket suitably can change according to the size of little cylinder.
The utility model disclose a kind of can Real-Time Monitoring blast furnace charge level change radar scanner, solving shape of charge level under blast fumance state can not the problem of Real-Time Monitoring, for blast fumance cloth control provides visual reference frame, thus realize the efficiency utilization of resource in blast fumance, the object of energy-saving and emission-reduction.
The utility model is not limited to aforesaid embodiment.The utility model expands to any new feature of disclosing in this manual or any combination newly, and the step of the arbitrary new method disclosed or process or any combination newly.
Claims (10)
1. one kind can Real-Time Monitoring blast furnace charge level change radar scanner, it is characterized in that, this radar scanner installation position selection near blast furnace fan housing upper position, ensure vertical incidence charge level time, the left and right angle of its mechanical scanning is equal or close, and vertical angle controls within ± 30 degree; This radar scanner comprises radar fixed support sleeve, mechanical scanning radar body; Wherein, described mechanical scanning radar body comprises: radar body sleeve and refrigerating unit, mechanical scanner; Described radar body sleeve is the notch cuttype cylindrical structure of upper and lower two cylinders, top is large cylinder, and bottom is little cylinder, solid mechanical transmission mechanism bottom large cylinder, radar scanner gos deep into high furnace interior by bottom little cylinder, and radar body sleeve and high furnace interior are isolated by rotary joint; Described radar scanner includes antenna spline structure, this antenna spline structure by transforming multi-directional ball or slide block, to prevent antenna rotation; Described mechanical drive structure is that swivel block inside being inlayed PTFE material directly matches with the external diameter of radar scanner, does axial feed motion by slide bar band movable slider, and antenna does radial scan campaign with slide block simultaneously; Described radar scanner also comprises monitoring device, and this monitoring device comprises video acquisition device and temperature collecting device.
2. radar scanner as claimed in claim 1, it is characterized in that, multi-directional ball is adopted to prevent the structure of antenna rotation from being: the symmetrical both sides of multi-directional ball process two and pick up the ears, and pick up the ears to coordinate with universal joint with upper cover plate is slotted respectively in lower tray, limit universal joint thus and only rotate in blast furnace radial scan direction; Or, directly a part is cut away to universal joint upper part, and process mating surface on upper cover plate, ensure that universal joint only rotates in blast furnace radial scan direction.
3. radar scanner as claimed in claim 1, it is characterized in that, slide block is adopted to prevent the structure of antenna rotation from being: on slide block, increase a spline projection or sunk structure, antenna microwave passage direction of motion is fixed, namely antenna can only rotate along the direction fixed, and oneself can not rotate around antenna axle center.
4. the radar scanner as described in one of claim 1-3, it is characterized in that, described radar fixed support sleeve design top is notch cuttype, bottom is that shape of a hoof carbon steel stop sleeve is welded on blast furnace, and notch cuttype sleeve weld gusset improves bearing stress intensity and coordinates to install with radar body sleeve saves space; Shape of a hoof sleeve gos deep into high furnace interior 30-50mm and parallel with blast furnace inwall.
5. the radar scanner as described in one of claim 1-3, is characterized in that, welds two rectangular box in described large cylinder both sides, installs servomotor and radar hardware circuit respectively, and rectangular box and radar sleeve inner adopt sealing method to completely cut off.
6. the radar scanner as described in one of claim 1-3, it is characterized in that, described mechanical drive and radar scanner, be arranged in sleeve, antenna is connected with high temperature leading screw with web plate by slide block, leading screw is fixed on two ends on rail plate slide block and is supported by bearing and bearing support, is realized left and right feeding movement and antenna slide block the sliding up and down along microwave channel of rail plate slide block by servo motor transmission moment, thus drives antenna to carry out radial scan to charge level.
7. radar scanner as claimed in claim 6, it is characterized in that, described leading screw and motor combination are sealed, form a set of motor module rotation table device, can not only dust be blocked, leading screw is effectively protected, and can at its outside installation optoelectronic switch, carry out the zero-bit of marker antenna, this rotation table device is conducive to reducing fault, ensureing leading screw precision, and is convenient to the debugging of motor.
8. the radar scanner as described in one of claim 1-3, is characterized in that, described video acquisition device adopts the camera with night vision function, the kinestate of Real Time Observation radar inner mechanism, and mechanism has trouble free etc.; In addition, coordinated by video signal acquisition device refrigerating unit to be installed on bottom little cylinder, towards high furnace interior, pass high furnace interior chute and charge level video image back.
9. the radar scanner as described in one of claim 1-3, it is characterized in that, described temperature collecting device at the inner mounting temperature sensor of radar body sleeve, the working temperature of real-time police radar signal pickup assembly, when temperature is too high, motor returns stop bit, systemic protective power-off; In addition, temperature sensor is placed in bottom little cylinder, can Real-Time Monitoring furnace roof blast furnace internal temperature information.
10. the radar scanner as described in one of claim 1-3, is characterized in that, described refrigerating unit comprises nitrogen cooling device and water cooling plant; Described nitrogen cooling device is blown into nitrogen by radar sleeve flange dish, high temperature leading screw and bearing are directly purged and realizes cooling, radar sleeve is tightness system, and nitrogen is blown into box horn inside via the hole on microwave channel and realizes lowering the temperature and being finally blown into high furnace interior to antenna; Little cylinder inside water jacket is cooled whole metallic cavity by described water cooling plant, comprises the cooling to multi-directional ball, prevents the generation of hot metal expansion locking phenomenon.
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| CN201420853174.8U CN204434646U (en) | 2014-12-29 | 2014-12-29 | A kind of can Real-Time Monitoring blast furnace charge level change radar scanner |
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| CN201420853174.8U CN204434646U (en) | 2014-12-29 | 2014-12-29 | A kind of can Real-Time Monitoring blast furnace charge level change radar scanner |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104611494A (en) * | 2014-12-29 | 2015-05-13 | 北京科技大学 | Radar scanning device capable of monitoring change of charge level of blast furnace in real time |
| CN105571684A (en) * | 2016-01-28 | 2016-05-11 | 江苏润东仪表科技有限公司 | Intelligent radar level instrument |
| CN105571677A (en) * | 2016-03-15 | 2016-05-11 | 山东钢铁股份有限公司 | Molten iron liquid level meter |
| CN105695652A (en) * | 2016-04-21 | 2016-06-22 | 上海中冶横天自动化工程有限公司 | Contourgraph for detecting contour shape of blast furnace top charge surface and blast furnace control system |
| CN107502693A (en) * | 2017-09-28 | 2017-12-22 | 北京科技大学 | A kind of blast furnace radar scanner of electromechanical separation |
| CN108732541A (en) * | 2018-06-13 | 2018-11-02 | 安徽尼古拉电子科技有限公司 | A kind of multifunctional testing radar |
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2014
- 2014-12-29 CN CN201420853174.8U patent/CN204434646U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104611494A (en) * | 2014-12-29 | 2015-05-13 | 北京科技大学 | Radar scanning device capable of monitoring change of charge level of blast furnace in real time |
| CN105571684A (en) * | 2016-01-28 | 2016-05-11 | 江苏润东仪表科技有限公司 | Intelligent radar level instrument |
| CN105571677A (en) * | 2016-03-15 | 2016-05-11 | 山东钢铁股份有限公司 | Molten iron liquid level meter |
| CN105695652A (en) * | 2016-04-21 | 2016-06-22 | 上海中冶横天自动化工程有限公司 | Contourgraph for detecting contour shape of blast furnace top charge surface and blast furnace control system |
| CN105695652B (en) * | 2016-04-21 | 2017-10-20 | 上海中冶横天自动化工程有限公司 | Contourgraph and high furnace control system for detecting material top surface in top of blast furnace contour shape |
| CN107502693A (en) * | 2017-09-28 | 2017-12-22 | 北京科技大学 | A kind of blast furnace radar scanner of electromechanical separation |
| CN107502693B (en) * | 2017-09-28 | 2019-02-15 | 北京科技大学 | A kind of blast furnace radar scanner of electromechanical separation |
| CN108732541A (en) * | 2018-06-13 | 2018-11-02 | 安徽尼古拉电子科技有限公司 | A kind of multifunctional testing radar |
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