CN201892582U - Compound continuous molten metal temperature measurement system - Google Patents

Compound continuous molten metal temperature measurement system Download PDF

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Publication number
CN201892582U
CN201892582U CN2010206239653U CN201020623965U CN201892582U CN 201892582 U CN201892582 U CN 201892582U CN 2010206239653 U CN2010206239653 U CN 2010206239653U CN 201020623965 U CN201020623965 U CN 201020623965U CN 201892582 U CN201892582 U CN 201892582U
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China
Prior art keywords
interface
infrared probe
circuit
probe
temperature measurement
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Expired - Lifetime
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CN2010206239653U
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Chinese (zh)
Inventor
叶俊林
夏清甫
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KEHAI LONGHUA INDUSTRY AUTOMATION INSTRUMENT Co Ltd BEIJING
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KEHAI LONGHUA INDUSTRY AUTOMATION INSTRUMENT Co Ltd BEIJING
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Abstract

The utility model relates to a compound continuous molten metal temperature measurement system. The system comprises a thermodetector and an infrared probe; a signal cable of the infrared probe is connected to an infrared probe interface of the thermodetector, a protective tube is arranged outside the signal cable of the infrared probe, wherein the protective tube is a stainless steel flexible tube, the thermodetector is also provided with a thermocouple probe interface, an RS484 interface and a standard signal interface of 4mA to 20mA, the thermocouple probe interface is connected with a thermocouple probe, the RS484 interface is connected with a large-screen display, and the standard signal interface of 4mA to 20mA is connected to a computer. The utility model has the beneficial effects that: after the stainless steel flexible tube is adopted as the protective tube, the arrangement of the system is flexible; since the thermodetector of the system is provided with the infrared probe interface and the thermocouple probe interface at the same time, temperature can be measured in two ways at the same time, and by comparing the results of the two temperature measurement methods, the system enhances the reliability of practical temperature measurement; the structure of the system is simple, and the system is convenient to operate.

Description

A kind of composite metal liquation continuous temperature measurement system
Technical field
The utility model belongs to metallurgical furnace thermal technology temp measuring system, particularly a kind of composite metal liquation continuous temperature measurement system.
Background technology
Present metal smelting liquation temp measuring system, particularly the continuous temperature measurement system all is to use infrared probe to measure usually, in order to protect the common way of temperature probe is in the outside of probe and the cable arranged outside of transmission signals sheath to be arranged, the nitrogen that is blown into that continues in sheath cools off, sheath in the past mostly adopts steel pipe, because steel pipe is not flexible to have guaranteed the unimpeded of refrigerating gas, but too inflexible steel pipe has limited the flexible topology of system; The temperature measurer of present in addition temp measuring system can only carry out a kind of measurement of single mode, since measure field working condition complexity, the therefore on-the-spot temp measuring system that also needs one cover of configuration in addition to use the quick temperature measurement thermopair.
Summary of the invention
The purpose of this utility model is to propose a kind of composite metal liquation continuous temperature measurement systems technology scheme, this scheme possesses the function that infrared probe and thermopair are measured simultaneously, this scheme has adopted the sheath of snakeskin hose as the transmission signals cable outside, system layout is flexible, can use two kinds of methods to the molten metal thermometric simultaneously.
For achieving the above object, the technical solution of the utility model is: a kind of composite metal liquation continuous temperature measurement system comprises temperature measurer and infrared probe; The signal wire of infrared probe is connected to temperature measurer infrared probe interface, and the signal wire arranged outside of described infrared probe has pillar, and described pillar is provided with the cold gas input interface at temperature measurer infrared probe interface; Wherein, described pillar is the stainless steel snakeskin hose, and described temperature measurer also is provided with thermocouple probe interface, RS485 interface and 4-20mA standard signal interface; The thermocouple probe interface connects a thermocouple probe, the RS485 interface connects a large screen display, the 4-20mA standard signal interface is connected to computing machine, and corresponding infrared probe of described temperature measurer and thermocouple probe are respectively arranged with infrared probe test circuit and thermocouple probe test circuit.
Described thermocouple probe test circuit comprises Temperature Measure Control circuit, A/D change-over circuit and school zero-compensation circuit; Described Temperature Measure Control circuit comprises two-way multi-position switch and reference power supply, and wherein reference power supply provides the standard correction full scale current potential and the zero potential of thermopair; Described two-way multi-position switch is that two-way four selects a non-contact switch circuit, wherein the selecting side X of a way switch connects the thermopair input, another selecting side, road Y is connected to the A/D change-over circuit through amplifier, have at least the active pull-up of leading up to dividing potential drop to insert a current potential in the four tunnel selected ends of selecting side X, the four tunnel selected ends of selecting side Y wherein one the tunnel connect reference power supply, and the four tunnel selected ends of selecting side Y wherein connect thermopair in another road; Described school zero-compensation circuit comprises a multidigit selector switch and voltage divider, described multidigit selector switch is that two-way four selects a non-contact switch circuit, two-way four selects a road of a non-contact switch circuit to select the reference potential input end of the described amplifier of termination, and the selected then end of the multichannel of one tunnel selecting side connects the partial pressure potential of voltage divider respectively.
Described voltage divider is to be connected to form with power supply by a plurality of resistance series connection.
The beneficial effects of the utility model are: system layout was flexible after the utility model pillar used the stainless steel snakeskin hose; System is provided with infrared probe interface and thermocouple probe interface simultaneously on temperature measurer, can realize two kinds of methods thermometrics simultaneously, and the temperature results of two kinds of thermometrics is compared, and has improved the reliability of actual thermometric; The utility model is simple in structure, and is easy to operate.
Below in conjunction with drawings and Examples the utility model being done one describes in detail.
Description of drawings
Fig. 1 is the utility model system architecture synoptic diagram;
Fig. 2 is the utility model infrared probe test circuit and thermocouple probe test circuit block diagram;
Fig. 3 is the utility model thermocouple probe test circuit synoptic diagram.
Embodiment
Embodiment:
A kind of composite metal liquation continuous temperature measurement system embodiment, referring to Fig. 1, Fig. 2 and Fig. 3, described system comprises temperature measurer 1 and infrared probe 2; The signal wire 2-1 of infrared probe is connected to temperature measurer infrared probe interface 1-1, and the signal wire arranged outside of described infrared probe has pillar 3, and described pillar is provided with cold gas input interface 3-1 at temperature measurer infrared probe interface; Wherein, described pillar is the stainless steel snakeskin hose, and described temperature measurer also is provided with thermocouple probe interface 1-2, RS485 interface 1-3 and 4-20mA standard signal interface 1-4; The thermocouple probe interface connects a thermocouple probe 4, and the RS484 interface connects a large screen display 5, and the 4-20mA standard signal interface is connected to computing machine 6.Infrared probe described in the figure inserts temperature tube 7, and the front end of temperature tube stretches in the molten metal 8, and the rear end of temperature tube is fixed on by foundary weight 10 on the clad 9 of molten metal bag, and pail 11 fastens foundary weight and prevents foreign material collision infrared probe.
Corresponding infrared probe of temperature measurer described in the embodiment and thermocouple probe are respectively arranged with infrared probe test circuit and thermocouple probe test circuit, described infrared probe test circuit comprises prime amplifier 12 and ambient temperature compensation circuit 13, and described thermocouple probe test circuit comprises Temperature Measure Control circuit 14, A/D change-over circuit 15 and school zero-compensation circuit 16; The signal output of infrared probe test circuit and thermocouple probe test circuit is connected signal processing circuit 17, and signal processing circuit connects large screen display and computing machine.
Described Temperature Measure Control circuit comprises two-way multi-position switch 14-1 and reference power supply 14-2, and wherein reference power supply provides the standard correction full scale current potential and the zero potential of thermopair; Described two-way multi-position switch is that two-way four selects a non-contact switch circuit, wherein the selecting side X of a way switch connects the thermopair input, another selecting side, road Y is connected to A/D change-over circuit 15 through amplifier 18, have at least the active pull-up of leading up to dividing potential drop to insert a current potential (being connected the power supply dividing potential drop after passing through resistance R 1 among the embodiment and R1 connecting) in the four tunnel selected ends of selecting side X, the four tunnel selected ends of selecting side Y wherein one the tunnel connect reference power supply, and the four tunnel selected ends of selecting side Y wherein connect thermopair 4 in another road; Described school zero-compensation circuit comprises a multidigit selector switch 16-1 and voltage divider 16-2, described multidigit selector switch is that two-way four selects a non-contact switch circuit, two-way four selects a road of a non-contact switch circuit to select the reference potential input end of the described amplifier of termination, the selected then end of the multichannel of one tunnel selecting side connects the partial pressure potential of voltage divider respectively, and described voltage divider is to connect to form (being to connect and power supply connects to form by R3 R4, R5 among the embodiment) with power supply by a plurality of resistance series connection.The school zero-compensation circuit working principle that adopts is: when the inclined to one side negative value of current potential at zero point, by the reference potential that changes amplifier make its zero point drift on the occasion of, carry out digital school zero by program then, solved when zero point, current potential was negative value, though can the school zero by numeral, when measuring, can produce the zero crossing nonlinearity erron during current potential, with zero deviation be modulated on the occasion of, make its measured value be in linearity all the time, reduced measuring error.
What the microprocessor 17-1 described in the embodiment in the signal processing circuit selected for use is ATMEGA162 eight bit microprocessors, what the A/D converter of described A/D change-over circuit was selected for use is 18 A/D converters of MAX132, and what described two-way multi-position switch and multidigit selector switch were selected for use is that 4052 two-ways four select a noncontacting switch.
To be calibration number number be the 33mv of WRe thermopair for the 16.777mv of S or R or B thermopair or 18mv or calibration to described thermopair standard correction full scale current potential.
The control end of the multidigit selector switch in the two-way multidigit selector switch in the described Temperature Measure Control circuit and the described school zero-compensation circuit is connected with the control of A/D change-over circuit output, 18 A/D converters of MAX132 have four control outputs among the embodiment, per two with four control outputs connect two multidigit selector switch respectively, therefore artificial circuit part does not have data line in wiring board, and data line only is connected to A/D converter, reduce the phase mutual interference of digital-to-analogue, improved the stability and the reliability of measuring process.

Claims (3)

1. a composite metal liquation continuous temperature measurement system comprises temperature measurer and infrared probe; The signal wire of infrared probe is connected to temperature measurer infrared probe interface, and the signal wire arranged outside of described infrared probe has pillar, and described pillar is provided with the cold gas input interface at temperature measurer infrared probe interface; It is characterized in that described pillar is the stainless steel snakeskin hose, described temperature measurer also is provided with thermocouple probe interface, RS485 interface and 4-20mA standard signal interface; The thermocouple probe interface connects a thermocouple probe, the RS485 interface connects a large screen display, the 4-20mA standard signal interface is connected to computing machine, and corresponding infrared probe of described temperature measurer and thermocouple probe are respectively arranged with infrared probe test circuit and thermocouple probe test circuit.
2. a kind of composite metal liquation continuous temperature measurement according to claim 1 system is characterized in that described thermocouple probe test circuit comprises Temperature Measure Control circuit, A/D change-over circuit and school zero-compensation circuit; Described Temperature Measure Control circuit comprises two-way multi-position switch and reference power supply, and wherein reference power supply provides the standard correction full scale current potential and the zero potential of thermopair; Described two-way multi-position switch is that two-way four selects a non-contact switch circuit, wherein the selecting side X of a way switch connects the thermopair input, another selecting side, road Y is connected to the A/D change-over circuit through amplifier, have at least the active pull-up of leading up to dividing potential drop to insert a current potential in the four tunnel selected ends of selecting side X, the four tunnel selected ends of selecting side Y wherein one the tunnel connect reference power supply, and the four tunnel selected ends of selecting side Y wherein connect thermopair in another road; Described school zero-compensation circuit comprises a multidigit selector switch and voltage divider, described multidigit selector switch is that two-way four selects a non-contact switch circuit, two-way four selects a road of a non-contact switch circuit to select the reference potential input end of the described amplifier of termination, and the selected then end of the multichannel of one tunnel selecting side connects the partial pressure potential of voltage divider respectively.
3. a kind of composite metal liquation continuous temperature measurement according to claim 2 system is characterized in that described voltage divider is to be connected to form with power supply by a plurality of resistance series connection.
CN2010206239653U 2010-11-25 2010-11-25 Compound continuous molten metal temperature measurement system Expired - Lifetime CN201892582U (en)

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Application Number Priority Date Filing Date Title
CN2010206239653U CN201892582U (en) 2010-11-25 2010-11-25 Compound continuous molten metal temperature measurement system

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Application Number Priority Date Filing Date Title
CN2010206239653U CN201892582U (en) 2010-11-25 2010-11-25 Compound continuous molten metal temperature measurement system

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104568197A (en) * 2015-02-10 2015-04-29 上海庆晖科技有限公司 Transformer substation hot-spot detection sensor device
CN112074735A (en) * 2018-05-08 2020-12-11 普锐特冶金技术奥地利有限公司 Spray gun probe for outputting reference voltage
CN114011527A (en) * 2021-11-23 2022-02-08 湖南长仪微波科技有限公司 Drum-type microwave high-temperature roasting ball mill for industrial production
CN114042507A (en) * 2021-11-23 2022-02-15 湖南长仪微波科技有限公司 Microwave high-temperature roasting planetary ball mill

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104568197A (en) * 2015-02-10 2015-04-29 上海庆晖科技有限公司 Transformer substation hot-spot detection sensor device
CN112074735A (en) * 2018-05-08 2020-12-11 普锐特冶金技术奥地利有限公司 Spray gun probe for outputting reference voltage
CN112074735B (en) * 2018-05-08 2022-12-13 普锐特冶金技术奥地利有限公司 Spray gun probe for outputting reference voltage
CN114011527A (en) * 2021-11-23 2022-02-08 湖南长仪微波科技有限公司 Drum-type microwave high-temperature roasting ball mill for industrial production
CN114042507A (en) * 2021-11-23 2022-02-15 湖南长仪微波科技有限公司 Microwave high-temperature roasting planetary ball mill
CN114011527B (en) * 2021-11-23 2022-11-29 湖南长仪微波科技有限公司 Drum-type microwave high-temperature roasting ball mill for industrial production
CN114042507B (en) * 2021-11-23 2022-11-29 湖南长仪微波科技有限公司 Microwave high-temperature roasting planetary ball mill

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Granted publication date: 20110706

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