CN204389063U - A kind of melting liquid temperature continuous measurement device - Google Patents
A kind of melting liquid temperature continuous measurement device Download PDFInfo
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- CN204389063U CN204389063U CN201520046743.2U CN201520046743U CN204389063U CN 204389063 U CN204389063 U CN 204389063U CN 201520046743 U CN201520046743 U CN 201520046743U CN 204389063 U CN204389063 U CN 204389063U
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Abstract
The utility model discloses a kind of melting liquid temperature continuous measurement device, comprise sensor, analysis meter, described sensor comprises the temperature tube closed one end open one end, the connecting pipe be connected with temperature tube, temperature probe; Described measurement mechanism comprises further: locating module, described sensor through and coordinate with sliding between described locating device or roll; Level sensing module, described liquid detecting module detects the liquid level of described melt liquid; Driver module, described driver module is used for the Output rusults according to described level sensing module and drives described sensor, and the degree of depth making described temperature tube insert melt liquid is not less than set depth.The utility model thermometric cost is low, temperature measurement accuracy is high, is applied in the continuously measuring temperature of the melt liquids such as molten steel.
Description
Technical field
The utility model relates to black body cavity radiation pyrometry, particularly a kind of device for continuous coverage melt liquid temperature.
Background technology
In the industries such as metallurgical and glass production, to realize the continuous coverage of motlten metal, glass equitemperature adjustment production technology, reduce energy consumption, raising quality is significant.
US Patent No. 5180228 discloses method and the device of a kind of molten iron or liquid steel temperature measurement, as shown in Figure 1, this technical scheme utilizes black body cavity radiation thermometry, concrete scheme is: the temperature tube 11 of one end open inserts in molten iron or molten steel 14, molten iron or molten steel 14 surface flotation slag 13, temperature tube 11 upper end connects connecting pipe 12.Working method is: temperature tube 11 inserts in molten iron or molten steel 14, insertion depth is greater than 10 with the ratio of temperature tube 11 internal diameter, now temperature tube 11 is close to a blackbody cavity, the temperature of bottom perception molten iron or molten steel 14 also sends radiation, receive described radiation, obtain the temperature of molten iron or molten steel 14 by analysis.Temperature tube 11 uses zirconium system pottery, and cost is high.In order to improve the serviceable life of expensive temperature tube 11; the ring protection device 15 that can float on slag 13 is provided with outside described temperature tube 11; slag 13 and temperature tube 11 are kept apart, avoids slag 13 in thermometric process and corrode described temperature tube 11, substantially increase the serviceable life of temperature tube 11.Technique scheme achieves the continuous coverage to molten iron or liquid steel temperature, but also has following deficiency: 1, complex structure, needs special outfit new parts: ring protection device, 2, temperature measurement accuracy is low, owing to being utilize blackbody cavity technology to carry out radiation temperature measurement, therefore requirement is had to the insertion degree of depth of liquid level with the ratio of the internal diameter of temperature tube: be usually greater than a certain particular value, and in whole thermometric process, liquid level is constantly fluctuation, cause temperature tube insertion depth can fluctuate along with the fluctuation of liquid level, but be again the position of fixing temperature tube in technique scheme, therefore, when liquid level declines, when wrapping greatly as changed in steel-making continuous casting technique, Metal in Tundish liquid level has decline by a relatively large margin usually, there will be insertion depth deficiency, now temperature tube can not be regarded as blackbody cavity, and then cause temperature measurement accuracy degradation.
Jap.P. JP7-12650 discloses a kind of radiation temperature counter device for motlten metal continuous temperature measurement, as shown in Figure 2, this device is also utilize black body cavity radiation thermometry, and concrete technical scheme is: this device comprises temperature tube 23 and temperature probe, analysis meter 24.Working method is: temperature tube 23 inserts certain depth in the motlten metal 22 in molten bath 21, make temperature tube 23 close to a black matrix, the bottom perception molten metal temperature of temperature tube 23 also sends radiation, temperature probe receives described radiation signal, obtains the temperature of motlten metal 22 after described analysis meter 24 is analyzed.The arrangement achieves the continuous coverage to molten metal temperature, but also have following deficiency:
1, temperature tube cost is high, embody in the following areas: first, in thermometric process, the position of temperature tube is fixed, insert the limited length (temperature tube meets blackbody cavity needs) of motlten metal, the temperature tube length on liquid level longer (especially when liquid level declines), and this part temperature tube does not play thermometric effect, waste this part temperature tube, improve thermometric cost.Second, in order to meet the requirement of blackbody cavity, temperature tube insertion depth must be greater than a certain particular value with the ratio of internal diameter, and due to mould restriction (temperature tube is longer, and required interior cavity mould is also longer, be ensure mould strength, the diameter of mould just must be larger), this type of temperature tube intracavity diameter is usually larger, and therefore insertion depth is also just larger, causes temperature tube total length larger.Normally used temperature tube length is about 1100mm, if adopt cheap alumina-carbon material, weigh 15 kilograms, and alumina-carbon material price is 30000 yuan/ton, and therefore the cost of every root temperature tube is about 450 yuan, adopts the temperature tube price of zirconium system pottery higher.3rd, melt liquid such as molten steel surface has the very strong slag of one deck aggressivity, and therefore, temperature tube is often in the fracture of slag line place, and serviceable life declines greatly.Slag line process means have two kinds: a kind of is strengthen the wall thickness of temperature tube in slag line position, and another kind is the material (cost of reinforcement material very high) of strengthening temperature tube in slag line position.For the temperature tube that position is fixing, liquid level slag line fluctuates, and different application occasion slag line position is different, so temperature tube to carry out slag line process, then must process very long its universality of scope (such as 200mm) guarantee.The increase of temperature tube wall thickness improves the quality of temperature tube: can bring up to 16 kilograms from 15 kilograms, as adopted cheap aluminium carbon pipe, change a temperature tube every day, the consumptive material expense that then each point of application is annual is just more than 170,000 yuan, therefore, the operating cost reducing thermometric has become industry urgent problem.
2, temperature tube difficult processing, because the temperature tube used in such scheme is longer, and will process less internal diameter and be difficult in longer temperature tube, also high to the requirement of mould.
3, temperature measurement accuracy is low, owing to being utilize blackbody cavity technology to carry out radiation temperature measurement, therefore requirement is had to the insertion degree of depth of liquid level with the ratio of the internal diameter of temperature tube: be usually greater than a certain particular value, and in whole thermometric process, liquid level is constantly fluctuation, cause temperature tube insertion depth can fluctuate along with the fluctuation of liquid level, but be again the position of fixing temperature tube in technique scheme, therefore, when liquid level declines, there will be insertion depth deficiency, now temperature tube can not be regarded as blackbody cavity, thus causes temperature measurement accuracy degradation.
As shown in Figure 3, Chinese patent CN1116593C discloses the similar liquid steel temperature method for continuous measuring of a kind of and above-mentioned Jap.P. and temperature tube.Also have and morely patent document discloses the method and apparatus similar with technique scheme, 4-166730 as flat in Jap.P., Russ P RU2150091C1, Chinese patent CN2788937Y and CN101071079A etc., but all there is the deficiency identical with said method and device.
Utility model content
The purpose of this utility model solves above-mentioned deficiency of the prior art, provides the melting liquid temperature continuous measurement device that a kind of cost is low, component processing is easy, temperature measurement accuracy is high.
For achieving the above object, the utility model is by the following technical solutions:
A kind of melting liquid temperature continuous measurement device, comprise sensor, analysis meter, described sensor comprises the temperature tube closed one end open one end, the connecting pipe be connected with temperature tube, temperature probe; Described measurement mechanism also comprises further:
Locating module, described sensor through and coordinate with sliding between described locating device or roll;
Level sensing module, described liquid detecting module detects the liquid level of described melt liquid;
Driver module, described driver module is used for the Output rusults according to described level sensing module and drives described sensor, and the degree of depth making described temperature tube insert melt liquid is not less than set depth.
Ultimate principle of the present utility model is: driven by design level sensing and temperature tube, thus makes temperature tube insert set depth, and the proportionate relationship of set depth and temperature tube internal diameter meets the needs of temperature tube close to blackbody cavity, if ratio is 14; When liquid fluctuating, go to detect level fluctuation by level sensing module, thus by driving sensor, the degree of depth making temperature tube insert melt liquid keeps being not less than set depth, makes temperature tube all the time close to blackbody cavity.
Compared with prior art, the utility model has following beneficial effect:
1, temperature tube cost is low, embody in the following areas: first, no matter how liquid level fluctuates, the insertion depth of temperature tube is not less than set depth, can fixed value be set as, there will not be superfluous situation (insertion depth and temperature tube internal diameter ratio very large time there is no better effect yet), therefore, decrease the waste of the following temperature tube of liquid level while ensureing blackbody cavity to greatest extent, thus provide cost savings; Second, compared with the temperature tube that traditional position is fixing, length more than temperature tube liquid level described in the utility model is fixed, therefore, only need to stretch out liquid level comparatively short distance (such as 150mm) and thermometric demand can be met, therefore, the temperature tube cost more than liquid level is reduced to greatest extent; 3rd, temperature tube overall length is shorter, therefore can the internal diameter of temperature tube be done very little in process, length (insertion depth of temperature tube and internal diameter meet certain proportion just can make temperature tube close to blackbody cavity) below the insertion liquid level that correspondingly can shorten again temperature tube, reduces the quality of temperature tube; 4th, the position of described temperature tube contact slag line is fixed, and only needs the wall thickness of the very short part making contact slag line to strengthen (such as 50mm), reduces the quality of temperature tube, reduce cost.In general, when ensureing that temperature tube does not reduce serviceable life, the length of temperature tube can shorten about 50%, and temperature tube holistic cost also can reduce about 50%.
2, temperature tube length is short, processes little internal diameter easy.
3, temperature measurement accuracy is high, and owing to being make sensor insert in melt liquid, and its degree of depth inserting melt liquid is fixed, therefore, the fluctuation of melt liquid liquid level can not affect the degree of depth that temperature tube inserts melt liquid, thus makes temperature tube meet the needs of blackbody cavity all the time, improves temperature measurement accuracy.
Accompanying drawing explanation
Fig. 1 is a kind of existing molten iron or liquid steel temperature measurement mechanism structural representation;
Fig. 2 is a kind of structural representation of the existing radiation temperature counter device for motlten metal continuous temperature measurement;
Fig. 3 is a kind of structural representation of existing liquid steel temperature continuous measuring device;
Fig. 4 is the structural representation of a kind of melting liquid temperature continuous measurement device of the present utility model;
Fig. 5 is the partial structurtes schematic diagram of measurement mechanism in Fig. 4.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described in detail.
Embodiment:
As shown in Figure 4, a kind of melting liquid temperature continuous measurement device, is applied in liquid steel temperature continuous coverage, comprises sensor, analysis meter 6 and locating device 8.Described sensor comprises temperature tube 3, connecting pipe 4 and temperature probe 5.
Described connecting pipe 4 adopts metal material, for connecting described temperature tube 3 and temperature probe 5, wherein, uses bolt to fix described connecting pipe 4 and temperature tube 3.Described connecting pipe 4 also and between locating device 8 is slidably matched through locating device 8, and length is 600mm; In order to avoid whole sensor enters in container, also in order to avoid the blind end of the temperature tube 3 touching bottom of container and cracked when the liquid level of molten steel 2 declines, described connecting pipe 4 is provided with locating device 8 with the use of stop means 41.As shown in Figure 5, in connecting pipe 4, be provided with cooled gas path 42, between described connecting pipe 4 and temperature tube 3, be provided with exhaust passage 43.Described locating device 8 quality is comparatively large, moves up and down therein for limiting connecting pipe 4.
Described temperature tube 3 one end open, one end is closed, adopt cheap alumina-carbon material, length is 500mm, internal diameter is 20mm, and the thickness of its sidewall is greater than the thickness of blind end: side thickness 30mm, wherein from blind end distance be the 290mm vicinity 31 (part of contact slag 1 during thermometric, length is 50mm) wall thickness be 70mm, the thick 10mm of blind end.The blind end of described temperature tube 3 insert molten steel 2 for set depth be 290mm.
Level sensing module, described level sensing module detects the liquid level of molten steel in ladle, thus monitors the fluctuation of molten steel liquid level in real time.As by ladle bottom setting pressure sensor, by pressure sensor senses pressure, utilize the mapping relations between pressure and liquid level, draw liquid level;
Driver module, described driver module drives described connecting pipe to move up and down, and amount of exercise equals the fluctuating range of described molten steel liquid level: when liquid level declines, sensor moves downward same magnitude; When liquid level rises, sensor moves upward same magnitude, thus makes no matter how liquid level fluctuates, and temperature tube insertion depth is always set depth, thus meets the needs of blackbody cavity.Driver module can adopt stepper motor, goes to drive connecting pipe to move up and down, and amount of exercise is determined according to the change of liquid level.
The present embodiment further discloses a kind of liquid steel temperature method for continuous measuring, comprises the following steps:
Be arranged on by locating device 8 on connecting pipe 4, one end of described connecting pipe 4 connects temperature probe 5, and be connected with described connecting pipe 4 by temperature tube 3, described connecting pipe 4 coordinates with described locating device 8;
Be seated in by described locating device 8 in the container cover 7 of molten steel 2 ullage, the blind end of described temperature tube 3 inserts in molten steel 2 through slag 1, and the wall thickness major part 31 on temperature tube 3 contacts slag 1, resists the erosion of slag 1;
Level sensing module detects the liquid level of molten steel in ladle, thus monitors the fluctuation of molten steel liquid level in real time.As by ladle bottom setting pressure sensor, by pressure sensor senses pressure, utilize the mapping relations between pressure and liquid level, draw liquid level;
Driver module goes to drive described connecting pipe to move up and down according to the liquid level that described detection module records, and amount of exercise equals the fluctuating range of described molten steel liquid level: when liquid level declines, sensor moves downward same magnitude; When liquid level rises, sensor moves upward same magnitude, thus makes no matter how liquid level fluctuates, and temperature tube insertion depth is always set depth, thus meets the needs of blackbody cavity.Driver module can adopt stepper motor, goes to drive connecting pipe to move up and down, and amount of exercise is determined according to the change of liquid level.
The degree of depth that temperature tube 3 inserts molten steel 2 maintains about 290mm all the time, makes described temperature tube 3 close to blackbody cavity; Refrigerating gas 9 as the nitrogen of cleaning from as described in flow from top to down in connecting pipe 4, and to discharge from the exhaust passage 43 between connecting pipe 4 and temperature tube 3, reduce the temperature of connecting pipe 4;
The temperature of the blind end perception molten steel 2 of temperature tube 3 also sends radiation 10;
By the quick flowing of refrigerating gas 9, reduce the temperature of described connecting pipe 4, make the thermal deformation of described connecting pipe 4 minimum, thus ensure that the radiation 10 that the blind end of temperature tube 3 sends accurately can be received by temperature probe 5, and after described analysis meter 6 is analyzed, obtain the temperature of molten steel 2, achieve the continuous coverage to molten steel 2 temperature.
As mentioned above, the length of temperature tube of the present utility model is less than the half of existing temperature tube length, the wall thickness of temperature tube contact slag part is done thicker, oeverall quality is 7.5 kilograms, cost is about 225 yuan, and connecting pipe can reuse, so, if every day is also replacing temperature tube, the consumptive material expense that each point of application is saved every year is just more than 80,000 yuan, and there is the point of application of 900 steel industries in the whole of China, and the aluminium water of counting applied by supersteel iron far away, the molten metal temperature measurement points such as copper water, this technical scheme visible has good market popularization value.
It is pointed out that above-mentioned embodiment should not be construed as the restriction to the utility model protection domain.As, can also be roll to coordinate between connecting pipe with locating device.Exhaust passage can also be the vent port be located on temperature tube.Key of the present utility model is, by the design quality of sensor and the length of temperature tube, the blind end that the gravity that sensor is subject to equals temperature tube is inserted in melt liquid the buoyancy be subject to when drafting the degree of depth, thus the degree of depth making temperature tube insert melt liquid is fixed (making temperature tube meet the needs of blackbody cavity), can not fluctuate with the fluctuation of melt liquid liquid level, greatly reduce length and the quality of temperature tube, when temperature tube does not shorten serviceable life, for melt liquid thermometric saves the consumptive material expense of half, and handling ease, temperature measurement accuracy is high.When not departing from the utility model spirit, all should fall within protection domain of the present utility model any type of change that the utility model is made.
Claims (4)
1. a melting liquid temperature continuous measurement device, comprises sensor, analysis meter, and described sensor comprises the temperature tube closed one end open one end, the connecting pipe be connected with temperature tube, temperature probe; It is characterized in that: described measurement mechanism comprises further:
Locating module, described sensor through and coordinate with sliding between described locating device or roll;
Level sensing module, described liquid detecting module detects the liquid level of described melt liquid;
Driver module, described driver module is used for the Output rusults according to described level sensing module and drives described sensor, and the degree of depth making described temperature tube insert melt liquid is not less than set depth.
2. measurement mechanism according to claim 1, is characterized in that: described set depth is more than or equal to 14 with the ratio of temperature tube internal diameter.
3. measurement mechanism according to claim 1 and 2, is characterized in that: be provided with gas passage in described connecting pipe, and described temperature tube is provided with exhaust passage.
4. measurement mechanism according to claim 3, is characterized in that: described connecting pipe also arranges stop means.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520046743.2U CN204389063U (en) | 2015-01-23 | 2015-01-23 | A kind of melting liquid temperature continuous measurement device |
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| CN201520046743.2U CN204389063U (en) | 2015-01-23 | 2015-01-23 | A kind of melting liquid temperature continuous measurement device |
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| CN204389063U true CN204389063U (en) | 2015-06-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568223A (en) * | 2015-01-23 | 2015-04-29 | 海宁艾可炫照明电器有限公司 | Continuous measurement method and device for temperature of molten liquid |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568223A (en) * | 2015-01-23 | 2015-04-29 | 海宁艾可炫照明电器有限公司 | Continuous measurement method and device for temperature of molten liquid |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150610 Termination date: 20160123 |
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| EXPY | Termination of patent right or utility model |