CN104848681A - Direct temperature measurement device for eccentric sliding ring type rotary kiln - Google Patents
Direct temperature measurement device for eccentric sliding ring type rotary kiln Download PDFInfo
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- CN104848681A CN104848681A CN201510232795.3A CN201510232795A CN104848681A CN 104848681 A CN104848681 A CN 104848681A CN 201510232795 A CN201510232795 A CN 201510232795A CN 104848681 A CN104848681 A CN 104848681A
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- rotary kiln
- telescopic pipe
- temperature measurement
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Abstract
The invention relates to the technical field of rotary kiln temperature measurement and provides a direct temperature measurement device for an eccentric sliding ring type rotary kiln. The direct temperature measurement device for the eccentric sliding ring type rotary kiln comprises a sliding ring unit, a thermocouple and a sleeve tube arranged on the outer side of the thermocouple. The sliding ring unit comprises a fixed annular track eccentrically arranged on an outer ring of the rotary kiln and a sleeve tube positioning part located on the annular track and capable of performing circling motion along the annular track. The sleeve tube positioning part is connected to one end of the sleeve tube, and the other end of the sleeve tube extends into a temperature measurement through hole formed in the side wall of the rotary kiln. The sleeve tube can perform axial motion along the measurement through hole, and the end face of the end close to the kiln center is an open face. The thermocouple is fixedly connected with the rotary kiln, and the sleeve tube, the sleeve tube positioning part and the thermocouple rotate along with the rotary kiln. The direct temperature measurement device can automatically remove materials in the temperature measurement through hole, prevents materials from blocking the temperature measurement through hole and accordingly ensures the service life and temperature measurement accuracy of the thermocouple.
Description
Technical field
The present invention relates to rotary kiln thermometry field, particularly relate to a kind of eccentric sliding ring type rotary kiln direct temperature measurement device.
Background technology
Rotary kiln is widely used in each large industry, and such as, in many production industries such as building materials, metallurgy, chemical industry, environmental protection, rotary kiln is used to carry out machinery, physical or chemical treatment to solid material.Particularly: first, in coloured and iron and steel industry, the metals such as iron, aluminium, copper, zinc, tin, nickel, tungsten, chromium, file take rotary kiln as smelting equipment, sinter, roasting to ore, concentrate, intermediate etc.Wherein, Aluminium hydroxide roasting is become aluminium oxide with rotary kiln in producing by aluminium; The pellet for blast furnace ironmaking is produced with rotary kiln in ironmaking; External SL/RN method, Krupp method rotary kiln carry out direct-reduction to iron ore; Chloridizing volatilization roasting method adopts rotary kiln to extract tin and lead etc.In addition, in ore dressing process, carry out magnetizing roast with rotary kiln to poor iron ore, the weak magnetic making ore original changes into ferromagnetism, is beneficial to magnetic separation.Finally, in chemical industry, produce soda with rotary kiln, calcination phosphate fertilizer, barium sulphide etc.
All the time, the Measurement & Control of kiln temperature is all the difficult problem that insider pays close attention to, how to accurately measure out the real-time production temperature in rotary kiln, thus control each explained hereafter parameter and make it keep optimal state, directly affect the height of rotary kiln energy consumption index and product quality indicator.And for the rotary kiln used in various processes, the object that its thermometric is paid close attention to is also different, such as garbage incinerating kiln is rely on the high temperature in material that material is burnt completely when producing, thus reaches the effect of burning, so more pay close attention to temperature of charge; And acid pellet rotary kiln is rely on kiln atmosphere and temperature flue gas to carry out material roasting, so more pay close attention to atmosphere temperature when producing.
Tradition rotary kiln temp measuring method is divided into direct temperature measurement and the large class of indirect thermometric two.
When using rotary kiln direct temperature measurement method, refer to Fig. 1: on rotary kiln kiln shell 1 and refractory lining 2 correspondence position, offer thermometric through hole, then by securing member 3, thermocouple 4 is installed on outside thermometric through hole, the even head of thermocouple 4 is stretched in thermometric through hole and to keep small distance with kiln inwall.When producing, the high-temperature flue gas in rotary kiln enters in thermometric through hole, and high-temperature flue gas is responded to seizure by thermocouple 4, and then measures the temperature value of rotary kiln inside and be sent to Central Control Room Instructing manufacture.
The shortcoming that rotary kiln direct temperature measurement method exists is: be easy in thermometric through hole enter high temperature granular material, the material of semi-molten state very easily adheres to, once pour out being difficult in access aperture, accumulating over a long period and will form material knurl blocking thermometric through hole, thus significantly reducing temperature measurement accuracy.And if take mode thermocouple 4 being stretched into rotary kiln inside, then the thermocouple 4 of have more than is needed how long extension will be worn and torn by material, loses thermometric ability.
When using rotary kiln Indirect Temperature Measurement, refer to Fig. 2 with Fig. 3: the even head of thermocouple 4 directly contacts with high-temperature flue gas without the need to stretching in rotary kiln, the method of noctovisor scan instrument 5 only need be fixed by scanner support foot rest 6, or thermocouple 4 flush type method, rotary kiln kiln shell 1 when producing or refractory lining 2 temperature are measured, in thermodynamic metering model measured value input system set, extrapolate rotary kiln internal temperature thus Instructing manufacture.
The shortcoming that rotary kiln Indirect Temperature Measurement exists is: certainty of measurement is poor, reaction speed is slow, is difficult to meet technological requirement, and is subject to the impact that ring formation or liner peel off.
Summary of the invention
(1) technical problem that will solve
The technical problem to be solved in the present invention is just to provide and a kind ofly prevents material knurl blocking thermometric through hole, thermocouple long service life, temperature measurement accuracy high and the eccentric sliding ring type rotary kiln direct temperature measurement device that reaction speed is fast, and it is not by the impact that ring formation or liner peel off.
(2) technical scheme
In order to solve the problems of the technologies described above, the invention provides a kind of eccentric sliding ring type rotary kiln direct temperature measurement device, the telescopic pipe comprising slip ring unit, thermocouple and be arranged on outside described thermocouple; Described slip ring unit comprises the fixing circular orbit being eccentrically set on rotary kiln outer ring, and to be positioned on described circular orbit and the telescopic pipe keeper that can move in a circle along described circular orbit; Described telescopic pipe keeper connects one end of described telescopic pipe, and the other end of described telescopic pipe stretches in thermometric through hole that rotary kiln sidewall is offered; Described telescopic pipe can axially move along described thermometric through hole, and its one end end face near the kiln heart is the face of opening; Described thermocouple is fixedly connected with described rotary kiln, and described telescopic pipe, telescopic pipe keeper all rotate with described rotary kiln with thermocouple.
Preferably, described thermocouple is fixedly connected with by securing member with described rotary kiln; Described securing member is through after the elongated hole groove that described telescopic pipe is offered, and its two ends connect thermocouple and rotary kiln respectively; The length direction of described elongated hole groove and the axis being parallel of described telescopic pipe.
Preferably, flexibly connect between described telescopic pipe keeper/telescopic pipe and described rotary kiln, and described telescopic pipe keeper/telescopic pipe is rotated together along with described rotary kiln.
Preferably, on described rotary kiln sidewall, the surrounding of thermometric through hole is provided with bearing member; Described bearing member is connected with the first end of spring; Second end of described spring is connected with described telescopic pipe keeper/telescopic pipe.
Preferably, described bearing member is described securing member.
Preferably, the rotary kiln rotational positioning unit for monitoring described rotary kiln rotational angle is also comprised.
Preferably, described rotary kiln rotational positioning unit comprises limit switch, Contact plate and wireless transmission chip; Described limit switch to be fixed on described rotary kiln sidewall and to rotate with described rotary kiln, and described Contact plate position is fixed; Described rotary kiln often rotates one week described limit switch and contacts once with described Contact plate, and by described limit switch, activation signal being sent to described wireless transmission chip, described activation signal is sent to Central Control Room by rotary kiln PLC signal box by described wireless transmission chip.
Preferably, described slip ring comprises positioning track and lower positioning track; Described telescopic pipe keeper is connected between described upper positioning track and lower positioning track.
Preferably, described telescopic pipe and described thermocouple are coaxially arranged.
(3) beneficial effect
Technical scheme of the present invention has the following advantages: eccentric sliding ring type rotary kiln direct temperature measurement device of the present invention, by the slip ring in rotary kiln arranged outside and rotary kiln bias, make rotary kiln rotation process middle sleeve pipe in thermometric through hole along the radial motion of rotary kiln, thus telescopic pipe can be removed the material entered in thermometric through hole automatically, avoid material knurl blocking thermometric through hole, thus ensure service life and the temperature measurement accuracy of thermocouple.In addition, because thermocouple is fixed on rotary kiln, can ensure that the measurement result of thermocouple in rotary kiln rotation process is accurate.
In preferred version of the present invention, by arranging the rotary kiln rotational positioning unit of monitoring described rotary kiln rotational angle, thus the kiln temperature data perfection recorded can be distinguished into atmosphere temperature data and temperature of charge data.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the eccentric sliding ring type rotary kiln direct temperature measurement device of prior art;
Fig. 2 is the structural representation of the rotary kiln infrared ray indirect temperature measuring device of prior art;
Fig. 3 is the structural representation of the rotary kiln thermocouple flush type indirect temperature measuring device of prior art;
Fig. 4 is the structural representation of eccentric sliding ring type rotary kiln direct temperature measurement device of the present invention;
Fig. 5 is the enlarged diagram at I place in Fig. 4;
Fig. 6 be in Fig. 5 A to schematic diagram;
Fig. 7 is the cross-sectional schematic at B-B place in Fig. 6;
Fig. 8 be in Fig. 5 C to schematic diagram;
In figure: 1, rotary kiln kiln shell; 2, refractory lining; 3, securing member; 4, thermocouple; 5, noctovisor scan instrument; 6, scanner support foot rest; 7, slip ring; 71, upper positioning track; 72, upper positioning track; 73, telescopic pipe keeper; 8, telescopic pipe; 9, limit switch; 10, Contact plate.
Detailed description of the invention
Below in conjunction with drawings and Examples, embodiments of the present invention are described in further detail.Following examples for illustration of the present invention, but can not be used for limiting the scope of the invention.
In describing the invention, it should be noted that, term " " center ", " longitudinal direction ", " transverse direction ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance.
The eccentric sliding ring type rotary kiln direct temperature measurement device of the present embodiment, the telescopic pipe 8 comprising slip ring 7 unit, thermocouple 4 and be arranged on outside described thermocouple 4.Described slip ring 7 unit comprises the fixing circular orbit being eccentrically set on rotary kiln outer ring, and to be positioned on described circular orbit and the telescopic pipe keeper 73 that can move in a circle along described circular orbit.Described telescopic pipe keeper 73 connects one end of described telescopic pipe 8, and the other end of described telescopic pipe 8 stretches in thermometric through hole that rotary kiln sidewall is offered, and described telescopic pipe 8 can along the axially-movable of described thermometric through hole.Described thermocouple 4 is fixedly connected with described rotary kiln, and described telescopic pipe 8, telescopic pipe keeper 73 all rotate with described rotary kiln with thermocouple 4.Due to circular orbit and rotary kiln eccentric setting, obviously in rotary kiln rotation process, telescopic pipe 8 can axially move by relative thermometric through hole, thus can automatically remove the material entered in thermometric through hole.
Due to thermocouple 4 relatively rotary kiln fix, therefore in order to not move interference with thermocouple 4 when ensureing that telescopic pipe 8 axially moves in thermometric through hole, one end end face of close the kiln heart of telescopic pipe 8 is designed to out face, described in the face of opening refers to is exactly that this end is unlimited.When rotary kiln moves to the pericenter of circular orbit, thermocouple exposes telescopic pipe and opens beyond face; When rotary kiln moves to the centre point of circular orbit, thermocouple is positioned at telescopic pipe 8.
It should be noted that and also can ensure not move interference between telescopic pipe and thermocouple 4 by the length increasing telescopic pipe 8.Now, in order to realize the accurate measurement to kiln temperature, thermometric pore can be set in one end of the close kiln heart of telescopic pipe 8.But telescopic pipe 8 is oversize, its distance kiln heart when rotary kiln moves to pericenter may be caused too near, thus telescopic pipe 8 is caused damage.
Refer to Fig. 4, the center of circle of circular orbit and the center of circle of rotary kiln are positioned on same level line, and the left part of circular orbit distance rotary kiln kiln shell 1 is near, and right part distance rotary kiln kiln shell 1 is far away.Circular orbit can certainly be arranged near the right part of rotary kiln, top or bottom, and because thermocouple 4 is fixed on rotary kiln, so the position of the relative thermometric through hole of thermocouple 4 is fixing all the time, thus can not impact the measurement of kiln temperature.
In the present embodiment, because thermocouple 4 is fixedly connected with rotary kiln, and telescopic pipe 8 is set in the outside of thermocouple 4, and thermocouple 4 therefore can be driven in rotary kiln rotation process to rotate, and then drives telescopic pipe 8 to rotate with rotary kiln.It is because the annexation of telescopic pipe 8 and thermometric through hole causes that the reason that certain telescopic pipe 8 rotates is not got rid of yet.On this basis, telescopic pipe keeper 73 rotates with telescopic pipe 8.Again due to circular orbit and rotary kiln eccentric setting, therefore in rotary kiln rotation process, telescopic pipe 8 along the axially-movable of thermometric through hole in thermometric through hole, thus will inevitably be cleared up in thermometric through hole automatically, avoids high-temperature material to pile up and causes material knurl and then blocking thermometric through hole.
Particularly; when rotary kiln turns to the pericenter of slip ring 7 unit, telescopic pipe keeper distance rotary kiln kiln shell 1 recently, thus stretches into thermometric through hole inside with driving telescopic pipe 8 depth capacity; enclose to upper one the material piled up in thermometric through hole and push cleaning, and thermocouple 4 is protected.Meanwhile, because thermocouple is fixed, therefore thermocouple 4 is farthest in telescopic pipe 8 described in indentation, and now thermocouple 4 does not directly contact with material, and what therefore measure is the temperature of flue gas.When rotary kiln turns to the apocenter of slip ring 7 unit, telescopic pipe keeper from rotary kiln kiln shell 1 farthest, thus stretches into thermometric through hole inside with driving telescopic pipe 8 minimum-depth, farthest exposes thermocouple 4.Now, material enters in material through hole, and thermocouple 4 directly contacts with material, obtains temperature of charge.Wherein it should be noted that, " pericenter " and " apocenter " be corresponding " position that circular orbit is nearest with rotary kiln kiln shell " and " circular orbit and rotary kiln kiln shell are apart from position farthest " respectively.
Refer to Fig. 5-Fig. 7, described thermocouple 4 is fixedly connected with by securing member 3 with described rotary kiln; Described securing member 3 is through after the elongated hole groove that described telescopic pipe 8 is offered, and its two ends connect thermocouple 4 and rotary kiln respectively.The length direction of described elongated hole groove and the axis being parallel of described telescopic pipe 8, also be illustrated left and right directions, make described telescopic pipe 8 can do the relative motion in elongated hole slot length direction by relatively described securing member 3, thus make can not interfere between securing member 3 and telescopic pipe 8 in rotary kiln rotation process.Connected mode between certain thermocouple 4 and rotary kiln also can be except diagram beyond method.
Although the weight of telescopic pipe 8 and telescopic pipe keeper 73 can be ignored sometimes, but in order to avoid thermocouple 4 drives telescopic pipe 8 and telescopic pipe keeper 73 to rotate the loss of the thermocouple 4 caused, flexibly connect between described telescopic pipe keeper 73/ telescopic pipe 8 and described rotary kiln, and described telescopic pipe keeper 73/ telescopic pipe 8 is rotated together along with described rotary kiln.Preferably but on rotary kiln sidewall, bearing member must be provided with around thermometric through hole; Described bearing member is connected with the first end of spring; Second end of described spring is connected with described telescopic pipe keeper 73/ telescopic pipe 8.Wherein, described bearing member is preferably above-mentioned securing member, thus need not arrange extra bearing member structure.
Refer to Fig. 8, slip ring 7 comprises two upper positioning tracks 7271 and two lower positioning tracks, and telescopic pipe keeper is connected between positioning track 7271 and lower positioning track.In addition, preferably but not must coaxially not arrange with described thermocouple 4 by telescopic pipe 8.
The eccentric sliding ring type rotary kiln direct temperature measurement device of the present embodiment also comprises the rotary kiln rotational positioning unit for monitoring described rotary kiln rotational angle, thus the kiln temperature data perfection recorded can be distinguished into atmosphere temperature data and temperature of charge data.
Wherein, rotary kiln rotational positioning unit comprises limit switch 9, Contact plate 10 and wireless transmission chip; Described limit switch 9 to be fixed on described rotary kiln sidewall and to rotate with described rotary kiln, and described Contact plate 10 position is fixed; Described rotary kiln often rotates one week described limit switch 9 and contacts once with described Contact plate 10, and by described limit switch 9, activation signal being sent to described wireless transmission chip, described activation signal is sent to Central Control Room by rotary kiln PLC signal box by described wireless transmission chip.
In the present embodiment, in 90 degree of angles between the radius at limit switch 9 and thermometric through hole place.Radius wherein refers to the radius on rotary structure.Half-turn is rotated clockwise to rotary kiln from the position in Fig. 4, in this process, but thermocouple 4 does not directly contact with material in kiln directly contacts with flue gas in kiln, therefore this process is considered to the atmosphere thermometric time period, and the temperature value recorded is included in atmosphere temperature database automatically.And remaining half-turn material can enter in thermometric through hole automatically and and thermocouple 4 come in contact, then this time period is considered to the material thermometric time period, and the temperature value recorded is included in temperature of charge database automatically.Therefore by the mode of mounting limit switch 9 with Contact plate 10, when limit switch 9 turns to Contact plate 10 position time, now system thinks that rotary kiln enters the atmosphere thermometric time period, start to gather thermocouple 4 measured temperature value to be included in atmosphere temperature data and to start self-clocking, after the time exceedes rotary kiln half-turn required time, system thinks that rotary kiln enters the material thermometric time period, starts to gather thermocouple 4 measured temperature value and is included in temperature of charge data.
Wherein it should be noted that, angle between the radius at limit switch 9 and thermometric through hole place is unimportant, and above-mentioned 90 degree of providing are one and represent numeral, in fact, as long as reach when limit switch 9 touches plate 10, this time, thermometric through hole just in time moved on in kiln above material, started to enter atmosphere temperature collection time period, reached this effect, it may be 90 degree, also may be 110 degree, also may be 60 degree, has relation with the highest charge level of material in kiln when producing.
Owing to being direct temperature measurement device, therefore the eccentric sliding ring type rotary kiln direct temperature measurement device of the present embodiment on the test of kiln temperature not by the impact that ring formation or liner peel off.On this basis; this temperature measuring equipment effectively compensate for the defects such as temperature measurement accuracy existing for prior art is poor, device lifetime is low; in the process that rotary kiln is enclosed in rotation one; temperature measuring equipment can realize protection and the value of thermocouple 4 automatically; under the prerequisite that ensure that temperature measurement accuracy, greatly extend the life-span of thermocouple 4, there is very high market using value.
Above embodiment is only for illustration of the present invention, but not limitation of the present invention.Although with reference to embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, various combination, amendment or equivalent replacement are carried out to technical scheme of the present invention, do not depart from the spirit and scope of technical solution of the present invention, all should be encompassed in the middle of right of the present invention.
Claims (9)
1. an eccentric sliding ring type rotary kiln direct temperature measurement device, is characterized in that, the telescopic pipe comprising slip ring unit, thermocouple and be arranged on outside described thermocouple; Described slip ring unit comprises the fixing circular orbit being eccentrically set on rotary kiln outer ring, and to be positioned on described circular orbit and the telescopic pipe keeper that can move in a circle along described circular orbit; Described telescopic pipe keeper connects one end of described telescopic pipe, and the other end of described telescopic pipe stretches in thermometric through hole that rotary kiln sidewall is offered; Described telescopic pipe can axially move along described thermometric through hole, and its one end end face near the kiln heart is the face of opening; Described thermocouple is fixedly connected with described rotary kiln, and described telescopic pipe, telescopic pipe keeper all rotate with described rotary kiln with thermocouple.
2., according to eccentric sliding ring type rotary kiln direct temperature measurement device according to claim 1, it is characterized in that, described thermocouple is fixedly connected with by securing member with described rotary kiln; Described securing member is through after the elongated hole groove that described telescopic pipe is offered, and its two ends connect thermocouple and rotary kiln respectively; The length direction of described elongated hole groove and the axis being parallel of described telescopic pipe.
3. eccentric sliding ring type rotary kiln direct temperature measurement device according to claim 2, it is characterized in that, flexibly connect between described telescopic pipe keeper/telescopic pipe and described rotary kiln, and described telescopic pipe keeper/telescopic pipe is rotated together along with described rotary kiln.
4. eccentric sliding ring type rotary kiln direct temperature measurement device according to claim 3, it is characterized in that, on described rotary kiln sidewall, the surrounding of thermometric through hole is provided with bearing member; Described bearing member is connected with the first end of spring; Second end of described spring is connected with described telescopic pipe keeper/telescopic pipe.
5. eccentric sliding ring type rotary kiln direct temperature measurement device according to claim 4, it is characterized in that, described bearing member is described securing member.
6. eccentric sliding ring type rotary kiln direct temperature measurement device according to claim 1, is characterized in that, also comprises the rotary kiln rotational positioning unit for monitoring described rotary kiln rotational angle.
7. eccentric sliding ring type rotary kiln direct temperature measurement device according to claim 6, it is characterized in that, described rotary kiln rotational positioning unit comprises limit switch, Contact plate and wireless transmission chip; Described limit switch to be fixed on described rotary kiln sidewall and to rotate with described rotary kiln, and described Contact plate position is fixed; Described rotary kiln often rotates one week described limit switch and contacts once with described Contact plate, and by described limit switch, activation signal being sent to described wireless transmission chip, described activation signal is sent to Central Control Room by rotary kiln PLC signal box by described wireless transmission chip.
8. eccentric sliding ring type rotary kiln direct temperature measurement device according to claim 1, it is characterized in that, described slip ring comprises positioning track and lower positioning track; Described telescopic pipe keeper is connected between described upper positioning track and lower positioning track.
9. eccentric sliding ring type rotary kiln direct temperature measurement device according to claim 1, it is characterized in that, described telescopic pipe and described thermocouple are coaxially arranged.
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| CN201510232795.3A CN104848681B (en) | 2015-05-08 | 2015-05-08 | A kind of eccentric sliding ring type rotary kiln direct temperature measurement device |
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| CN201510232795.3A CN104848681B (en) | 2015-05-08 | 2015-05-08 | A kind of eccentric sliding ring type rotary kiln direct temperature measurement device |
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| CN104848681B CN104848681B (en) | 2016-11-02 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105091570A (en) * | 2015-09-08 | 2015-11-25 | 攀钢集团工程技术有限公司 | Sliding ring device used for measuring temperature of rotary kiln |
| CN106679410A (en) * | 2015-11-09 | 2017-05-17 | 中冶长天国际工程有限责任公司 | Temperature detection device for rotary kiln |
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| CN106679410A (en) * | 2015-11-09 | 2017-05-17 | 中冶长天国际工程有限责任公司 | Temperature detection device for rotary kiln |
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| CN104848681B (en) | 2016-11-02 |
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