CN202814550U - A converter molten steel temperature detector - Google Patents
A converter molten steel temperature detector Download PDFInfo
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- CN202814550U CN202814550U CN 201220156982 CN201220156982U CN202814550U CN 202814550 U CN202814550 U CN 202814550U CN 201220156982 CN201220156982 CN 201220156982 CN 201220156982 U CN201220156982 U CN 201220156982U CN 202814550 U CN202814550 U CN 202814550U
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- molten steel
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Abstract
The utility model discloses a converter molten steel temperature detector comprising an optical telescope, a light filter, a photovoltaic converting unit, and a processor. The optical telescope is connected with the light filter and transmits acquired spectral information to the light filter to be filtered so that filtered spectral information is acquired. The light filter is connected with the photovoltaic converting unit and transmits the filtered spectral information to the photovoltaic converting unit to be converted into an electric signal. The photovoltaic converting unit is connected with the processor and transmits the electric signal to the processor to be calculated so that converter molten steel temperature information corresponding to the electric signal is acquired. The converter molten steel temperature detector acquires spectral information of the flame at the converter mouth at a long distance in real time by the optical telescope and acquires light intensity value corresponding to the spectral information according to the spectral information. As a result, the temperature detector is prevented from bearing a severe environment of the high temperature at the converter mouth so that the service life of the device is prolonged. Being easy to install and maintain, the temperature detector is not limited by the size of the converter and reduces cost effectively.
Description
Technical field
The utility model relates to the temperature detection technical field, particularly relates to a kind of converter molten steel temperature-detecting device.
Background technology
Along with improving constantly of China's industrial level, the output of steel of China is also increasing.The steel output of pneumatic steelmaking accounts for more than 80% of total steel output, occupy an leading position in big-and-middle-sized Key Iron And Steel converter steel output, and the control of steel-making terminal point is one of gordian technique of pneumatic steelmaking in the pneumatic steelmaking.The important operation in pneumatic steelmaking latter stage of the terminal temperature that blows during pneumatic steelmaking control, the temperature that therefore how accurately to obtain molten steel is very important.
Present BOF Steelmaking Endpoint temperature checking method mainly contains hand sampling, sublance point is surveyed and analysis of fumes.Yet the Measuring Time of hand sampling method can not satisfy the requirement of real-time of smelting process control far away, and has the accident of splash when sampling, and potential safety hazard is larger.Sublance method thermometric shoots straight, but expensive, and probe belongs to consumables simultaneously, can not obtain continuously blowing information, and heat size is required height, generally is only suitable for the above converter in 100t.The higher temperature hit rate of spectrometer analysis that the analysis of fumes method is used, the process control ability is strong, but the smelting standard-required is strict, expensive, plant maintenance is difficult to producing.
Therefore, how making the BOF Steelmaking Endpoint temperature detection safer, real-time and cheap, still is the technical barrier of pendulum in face of the research staff of this area.
The utility model content
For solving the problems of the technologies described above, the utility model embodiment provides a kind of converter molten steel temperature-detecting device, and to realize safer, the real-time and cheap purpose of BOF Steelmaking Endpoint temperature detection, technical scheme is as follows:
A kind of converter molten steel temperature-detecting device comprises: optical telescope, filtering apparatus, photoelectric conversion unit and processor,
Described optical telescope is connected with described filtering apparatus, the spectral information that obtains is sent in the described filtering apparatus filter the spectral information after obtaining filtering;
Described filtering apparatus is connected with described photoelectric conversion unit, the spectral information after the described filtration is sent in the described photoelectric conversion unit be converted into electric signal;
Described photoelectric conversion unit is connected with described processor, described electric signal is sent in the described processor calculate, to obtain the temperature information of the converter molten steel corresponding with described electric signal.
Preferably, be connected by optical fiber between described optical telescope and the described filtering apparatus.
Preferably, described filtering apparatus is filter glass.
Preferably, described photoelectric conversion unit comprises: photoelectric switching circuit, filtering and amplifying circuit and A/D change-over circuit,
Described photoelectric switching circuit is connected with described filtering apparatus, and the spectral information after the described filtration is converted to analog electrical signal;
Described filtering and amplifying circuit is connected with described photoelectric switching circuit, described analog electrical signal is amplified process and the filtering processing;
Described A/D change-over circuit is connected with described filtering and amplifying circuit, and the analog electrical signal after described filtering and amplifying circuit is processed is converted into digital electric signal.
Preferably, described photoelectric conversion unit also comprises: sampling hold circuit, described A/D change-over circuit is connected with described filtering and amplifying circuit by described sampling hold circuit.
Preferably, also comprise: output unit and storer, described output unit is connected with described processor, exports the temperature information of the converter molten steel that described processor obtains; Described storer is connected with described processor, stores the temperature information of the converter molten steel that described processor obtains.
Preferably, described photoelectric switching circuit is photoelectric sensor.
Preferably, also comprise: protect described converter molten steel temperature-detecting device not to be subjected to the shielding protector of high temperature injury.
Preferably, described shielding protector comprises: the photoelectric conversion unit installing plate that is used for that the filtering apparatus mount pad of described filtering apparatus is installed and is used for installing described photoelectric conversion unit.
Preferably, also comprise: the temperature control equipment that is connected with described shielding protector is not higher than default temperature threshold for the temperature of controlling described shielding protector.
By using above technical scheme, a kind of converter molten steel temperature-detecting device that the utility model provides, the spectral information that obtains fire door flame by the optical telescope real-time remote, and obtain the light intensity value corresponding with described spectral information according to this spectral information, avoid bearing the rugged surroundings of fire door high-temperature, improved the serviceable life of this device, be convenient to installation and maintenance, be not subjected to the restriction of converter size, can effectively reduce cost.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, the accompanying drawing that the following describes only is some embodiment that put down in writing in the utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The structural representation of a kind of converter molten steel temperature-detecting device that Fig. 1 provides for the utility model embodiment;
The structural representation of a kind of optical telescope that Fig. 2 provides for the utility model embodiment;
The structural representation of photoelectric conversion unit in a kind of converter molten steel temperature-detecting device that Fig. 3 provides for the utility model embodiment;
The structural representation of photoelectric conversion unit in the another kind of converter molten steel temperature-detecting device that Fig. 4 provides for the utility model embodiment;
The structural representation of photoelectric conversion unit in the another kind of converter molten steel temperature-detecting device that Fig. 5 provides for the utility model embodiment;
The structural representation of processor in the another kind of converter molten steel temperature-detecting device that Fig. 6 provides for the utility model embodiment;
The structural representation of the another kind of converter molten steel temperature-detecting device that Fig. 7 provides for the utility model embodiment;
The structural representation of shielding protector in the another kind of converter molten steel temperature-detecting device that Fig. 8 provides for the utility model embodiment.
Embodiment
In order to make those skilled in the art person understand better technical scheme in the utility model, below in conjunction with the accompanying drawing among the utility model embodiment, technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all should belong to the scope of the utility model protection.
As shown in Figure 1, a kind of converter molten steel temperature-detecting device that the utility model embodiment provides can comprise: optical telescope 100, filtering apparatus 200, photoelectric conversion unit 300 and processor 400,
Wherein, can be connected by optical fiber between optical telescope 100 and the filtering apparatus 200.The camera lens of optical telescope 100 can face toward converter mouth, to obtain the spectral information in the converter.
Wherein, the structure of optical telescope 100 can comprise as shown in Figure 2: object lens 11, fixedly trim ring 12 and the lens barrel 13 of object lens 11.Optical telescope 100 can be connected with multi-channel optical fibre 2, can certainly only be connected with one road optical fiber 2.Object lens 11 are specifically as follows two cemented objectives or two not cemented objective.Wherein, two cemented objectives are simple in structure, formed by one positive one negative two lens gummed, have easy for installation, optical energy loss is few, the advantage of easy correction error.But the maximum caliber of two cemented objectives can not surpass 100mm, and bore can cause weight excessive when increasing, thereby the gummed that causes two lens is insecure.The bore of two not cemented objectives is comprised of one positive one negative two lens equally greater than 100mm.But in the middle of the lens airspace is arranged, thereby bore is unrestricted, can utilizes airspace correct residual spherical aberration simultaneously, increase relative aperture.But it has, and optical energy loss increases, the relatively difficult shortcoming that guarantees of coaxiality of difficulty, particularly two lens is installed in processing.The tester can select two cemented objectives or two not cemented objective according to different demands when fire door flame is detected.Wherein, the lens barrel of optical telescope 100 can be metal material.When detecting, optical telescope 100 is placed on the position far away apart from fire door, the spectral information of fire door flame is imaged on the focal plane of object lens on the optical telescope 100, thereby so that this optical telescope 100 just can obtain the spectral information of fire door flame in larger distance, avoid bearing the higher rugged surroundings of fire door flame temperature.
Wherein, the optical fiber between optical telescope 100 and the filtering apparatus 200 can be for being multi-channel optical fibre 2.Optical telescope 100 is connected with multi-channel optical fibre 2 by the multi-channel optical fibre interface, and the end that multi-channel optical fibre 2 links to each other with optical telescope 100 can be arranged into ring optical fiber.Multi-channel optical fibre 2 is the ladder index fiber of identical material, same length and same diameter, and optical fiber adjacent in the multi-channel optical fibre 2 is closely pasted.In practical operation, the tester can paste the end that multi-channel optical fibre 2 is arranged into ring optical fiber with glue.Make the evenly distributed measure of multi-channel optical fibre 2 by above-mentioned, can reach the purpose of the spectral information of the fire door inside that uniform transmission obtains from optical telescope 100.In addition, be set to multichannel by optical fiber, realized the multipath transmission of spectral information, when actual the detection, can select according to actual conditions the concrete way of optical fiber.Generally speaking, can be set to 3 to 10 the tunnel by this optical fiber.Simultaneously, the transmitance of ladder index fiber＞75%, the numerical aperture of optical fiber＞0.6 can be transmitted maximum energy to greatest extent, makes luminous energy can pass through to low-loss optical fiber.
Wherein, filtering apparatus 200 can be filter glass.
The disclosed filter glass of the utility model embodiment equally can be for a plurality of.Wherein, the respectively corresponding filter glass in each road in the multi-channel optical fibre 2, each filter glass can have different optical filtering wave bands.Concrete, when the optical filtering wave band of filter glass between 300-1000nm and peak transmittance＞50% the time, do not need in the filtering spectral information to be convenient to the spectral band that detects, obtain spectral band to be detected.Generally speaking, filter glass can be selected the narrow-band-filter eyeglass.Simultaneously, under the prerequisite that guarantees measurement sensitivity, choose the half-wave zone width of trying one's best little, to guarantee the accuracy of its measurement.Spectral information can convert the monochromatic light of multichannel specified wavelength to through behind the filter glass.
Wherein, as shown in Figure 3, photoelectric conversion unit 300 can comprise: photoelectric switching circuit 310, filtering and amplifying circuit 320 and A/D change-over circuit 330,
Wherein, photoelectric switching circuit 310 can be photoelectric sensor.When filtering apparatus 200 was a plurality of filter glass, photoelectric switching circuit 310 also can be multichannel.Concrete, each road photoelectric switching circuit 310 can with a filter glass correspondence.Photoelectric switching circuit 310 is converted into the analog electrical signal corresponding with spectral band for the spectral band to be detected that the filter glass optical filtering that photoelectric switching circuit is corresponding obtains.
Filtering and amplifying circuit 320 is connected with photoelectric switching circuit 310, analog electrical signal is amplified process and the filtering processing;
Wherein, when photoelectric switching circuit 310 was multichannel, filtering and amplifying circuit 320 also can be multichannel.Concrete, each road photoelectric switching circuit 310 can with one road filtering and amplifying circuit, 320 correspondences.Filtering and amplifying circuit 320 can amplify the analog electrical signal that photoelectric switching circuit 310 obtains according to preset multiple, so that analog electrical signal can meet the requirements of voltage magnitude, and the interference in the analog electrical signal after the filtering amplification.In the testing process of reality, filtering mainly be the noise that produces of photoelectric sensor, noise and the noise of spectral information through producing after the opto-electronic conversion that filtering and amplifying circuit 320 produces.
A/D change-over circuit 330 is connected with filtering and amplifying circuit 320, and the analog electrical signal after filtering and amplifying circuit 320 is processed is converted into digital electric signal.
A/D change-over circuit 330 can change into the digital electric signal corresponding with the analog electrical signal behind the filtering interference signals with the analog electrical signal behind the filtering interference signals that obtains in the filtering and amplifying circuit 320.
In actual applications, photoelectric conversion unit 300 can also comprise: the control circuit that is connected with A/D change-over circuit 330.Because A/D change-over circuit 330 can only be processed one road signal a moment, in order to realize that multiple signals are processed, control circuit can adopt the multichannel handoff technique, the multichannel input signal is switched in turn, within a default time period, only transform one road analog electrical signal so that control circuit has been realized control A/D change-over circuit 330.In the testing process of reality, the testing staff also can be by setting control circuit, and control A/D change-over circuit 330 transforms concrete a certain road analog electrical signal.For example, in first clock period internal conversion first via simulating signal, the second tunnel clock period was changed the second tunnel simulating signal.
Wherein, as shown in Figure 4, photoelectric conversion unit 300 can also comprise: sampling hold circuit 340, A/D change-over circuit 330 is connected with filtering and amplifying circuit 320 by sampling hold circuit 340.
It will be understood by those skilled in the art that, sampling hold circuit is a kind of circuit that is used in analog/digital (A/D) converting system, effect is to gather analog input voltage instantaneous value at a time, and carry out the transition period at analog to digital converter and keep output voltage constant, for analog to digital conversion.
As shown in Figure 5, in the another kind of converter molten steel temperature-detecting device that the utility model embodiment provides, photoelectric conversion unit 300 can also comprise: the processing unit 350 that is connected with A/D change-over circuit 330, processing unit 350 at first screens multiply digital signals, remove abnormal data, then the multi-path digital electric signal after will screening is averaged, and obtain with screen after the corresponding multichannel light intensity value of the mean value of multi-path digital electric signal.In actual testing process, processing unit 350 can be single-chip microcomputer.
Concrete, photoelectric conversion unit 300 can be connected with processor 400 by PORT COM.
Wherein, as shown in Figure 6, processor 400 can specifically comprise: light intensity data processing unit 410, color comparison temperature measurement model unit 420, smelting data capture unit 430 and liquid steel temperature determining unit 440,
Light intensity data processing unit 410 links to each other with PORT COM, receives the corresponding electric signal of light intensity value that photoelectric conversion unit 300 gathers, and sets required light intensity value and it is passed to the color comparison temperature measurement model.
Color comparison temperature measurement model unit 420 is for the temperature of calculating converter mouth flamew.Specifically can be set to:
The wavelength X that passes according to light intensity data processing unit 410
1And λ
2Record down the light intensity value E of same point
λ 1, E
λ 2, according to the ratio of radiation intensity, obtain the temperature of flame:
In the situation of high frequency low temperature, Planck blackbody radiation theorem can be approximate by the Wien theorem, and the radiation power of black matrix is:
C1=3.7418 * 10 wherein
-16Wm
2, be first radiation constant; C2=1.4388 * 10
-2M is second radiation constant.Under certain specific wavelength, the monochromatic irradiation degree is:
ε wherein
λBe monochromatic emissivity.Black matrix monochromatic emissivity under different wave length is all identical, if in wavelength X
1And λ
2Record down the light intensity of same point
Then can obtain the temperature of flame according to the ratio of radiation intensity.
Smelt data capture unit 430, be used for obtaining the converter smelting parameter and sending to the forecast of molten steel temperature model.The converter smelting parameter can have a plurality of, as: steel grade, weight of molten iron, molten iron carbon content, blowing oxygen quantity etc.
Liquid steel temperature determining unit 440 is inputted determined flame temperature and smelting parameter in the predefined forecast of molten steel temperature model, determines the liquid steel temperature of converter.
Be understandable that, when smelting parameter (such as steel grade) not simultaneously, the corresponding liquid steel temperature of flame temperature is also different.
A kind of converter molten steel temperature-detecting device that the utility model provides, the spectral information that obtains fire door flame by the optical telescope real-time remote, and obtain the light intensity value corresponding with described spectral information according to this spectral information, the rugged surroundings of fire door high-temperature have been avoided bearing, improved the serviceable life of this device, be convenient to installation and maintenance, be not subjected to the restriction of converter size, can effectively reduce cost.
Preferably, as shown in Figure 7, a kind of converter molten steel temperature-detecting device that the utility model embodiment provides can also comprise: output unit 500 and storer 600, and output unit 500 is connected with processor 400, exports the temperature information of determined molten steel; Storer 600 is connected with processor 400, the temperature information of storage of processor 400 determined molten steel.Concrete, output unit 500 can be the output devices such as display screen, loudspeaker, LED lamp.
The another kind of converter molten steel temperature-detecting device that the utility model embodiment provides can also comprise: protection converter molten steel temperature-detecting device is not subjected to the shielding protector of high temperature injury.
Wherein, as shown in Figure 8, this shielding protector can comprise: the photoelectric conversion unit installing plate 63 that is used for that the filtering apparatus mount pad 61 of filtering apparatus 200 is installed and is used for installing photoelectric conversion unit 300.What label 62 was indicated among Fig. 6 is optical fiber interface.
Because filtering apparatus 200 and photoelectric conversion unit 300 are placed in the shielding protector, therefore can protect filtering apparatus 200 and photoelectric conversion unit 300 to avoid being subject to the interference of on-the-spot dust and electromagnetism.
In the another kind of converter molten steel temperature-detecting device that the utility model embodiment provides, can also comprise: the temperature control equipment that is connected with shielding protector 600, the temperature that is used for the control shielding protector is not higher than default temperature threshold.
Owing to round the clock, the reasons such as climate change in the four seasons, there is huge gap in the temperature in a kind of converter molten steel temperature-detecting device working environment of the present utility model.And, in this pick-up unit, may adopt photoelectric cell in each circuit, and photoelectric cell exists also very serious temperature to float phenomenon.Illumination is certain, can cause photocurrent to increase when temperature raises, and the precision of this pick-up unit is impacted.When the temperature of temperature control equipment in detecting shielding protector 600 surpasses setting value, will be to shielding protector 600 processings of lowering the temperature, so that its temperature is in the scope of presetting.Concrete, temperature control equipment can be the cooling devices such as fan.
A kind of converter molten steel temperature-detecting device that the utility model provides, the spectral information that obtains fire door flame by the optical telescope real-time remote, and obtain the light intensity value corresponding with described spectral information according to this spectral information, the rugged surroundings of fire door high-temperature have been avoided bearing, improved the serviceable life of this device, be convenient to installation and maintenance, be not subjected to the restriction of converter size, can effectively reduce cost.
Each embodiment in this instructions all adopts the mode of going forward one by one to describe, and identical similar part is mutually referring to getting final product between each embodiment, and each embodiment stresses is difference with other embodiment.
The above only is embodiment of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (10)
1. a converter molten steel temperature-detecting device is characterized in that, comprising: optical telescope, filtering apparatus, photoelectric conversion unit and processor,
Described optical telescope is connected with described filtering apparatus, the spectral information that obtains is sent in the described filtering apparatus filter the spectral information after obtaining filtering;
Described filtering apparatus is connected with described photoelectric conversion unit, the spectral information after the described filtration is sent in the described photoelectric conversion unit be converted into electric signal;
Described photoelectric conversion unit is connected with described processor, described electric signal is sent in the described processor calculate, to obtain the temperature information of the converter molten steel corresponding with described electric signal.
2. device according to claim 1 is characterized in that, is connected by optical fiber between described optical telescope and the described filtering apparatus.
3. device according to claim 1 is characterized in that, described filtering apparatus is filter glass.
4. device according to claim 1 is characterized in that, described photoelectric conversion unit comprises: photoelectric switching circuit, filtering and amplifying circuit and A/D change-over circuit,
Described photoelectric switching circuit is connected with described filtering apparatus, and the spectral information after the described filtration is converted to analog electrical signal;
Described filtering and amplifying circuit is connected with described photoelectric switching circuit, described analog electrical signal is amplified process and the filtering processing;
Described A/D change-over circuit is connected with described filtering and amplifying circuit, and the analog electrical signal after described filtering and amplifying circuit is processed is converted into digital electric signal.
5. device according to claim 4 is characterized in that, described photoelectric conversion unit also comprises: sampling hold circuit, described A/D change-over circuit is connected with described filtering and amplifying circuit by described sampling hold circuit.
6. device according to claim 1 is characterized in that, also comprises: output unit and storer, and described output unit is connected with described processor, exports the temperature information of the converter molten steel that described processor obtains; Described storer is connected with described processor, stores the temperature information of the converter molten steel that described processor obtains.
7. device according to claim 4 is characterized in that, described photoelectric switching circuit is photoelectric sensor.
8. device according to claim 1 is characterized in that, also comprises: protect described converter molten steel temperature-detecting device not to be subjected to the shielding protector of high temperature injury.
9. device according to claim 8 is characterized in that, described shielding protector comprises: the photoelectric conversion unit installing plate that is used for that the filtering apparatus mount pad of described filtering apparatus is installed and is used for installing described photoelectric conversion unit.
10. device according to claim 8 is characterized in that, also comprises: the temperature control equipment that is connected with described shielding protector is not higher than default temperature threshold for the temperature of controlling described shielding protector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220156982 CN202814550U (en) | 2012-04-13 | 2012-04-13 | A converter molten steel temperature detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220156982 CN202814550U (en) | 2012-04-13 | 2012-04-13 | A converter molten steel temperature detector |
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| CN202814550U true CN202814550U (en) | 2013-03-20 |
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| CN 201220156982 Expired - Fee Related CN202814550U (en) | 2012-04-13 | 2012-04-13 | A converter molten steel temperature detector |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111635976A (en) * | 2020-06-30 | 2020-09-08 | 南京宝希智能技术有限公司 | Non-contact converter molten steel temperature continuous measurement system and detection method |
| TWI720855B (en) * | 2020-03-25 | 2021-03-01 | 中國鋼鐵股份有限公司 | Method and system for measuring furnace temperatures |
| CN114438282A (en) * | 2022-02-09 | 2022-05-06 | 广东韶钢松山股份有限公司 | Composite probe, converter sublance and molten steel measuring method |
-
2012
- 2012-04-13 CN CN 201220156982 patent/CN202814550U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI720855B (en) * | 2020-03-25 | 2021-03-01 | 中國鋼鐵股份有限公司 | Method and system for measuring furnace temperatures |
| CN111635976A (en) * | 2020-06-30 | 2020-09-08 | 南京宝希智能技术有限公司 | Non-contact converter molten steel temperature continuous measurement system and detection method |
| CN114438282A (en) * | 2022-02-09 | 2022-05-06 | 广东韶钢松山股份有限公司 | Composite probe, converter sublance and molten steel measuring method |
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