CN2490167Y - Dew-point detecting device of continuous annealing furnace - Google Patents
Dew-point detecting device of continuous annealing furnace Download PDFInfo
- Publication number
- CN2490167Y CN2490167Y CN 01249882 CN01249882U CN2490167Y CN 2490167 Y CN2490167 Y CN 2490167Y CN 01249882 CN01249882 CN 01249882 CN 01249882 U CN01249882 U CN 01249882U CN 2490167 Y CN2490167 Y CN 2490167Y
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- China
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- dew point
- annealing furnace
- way connection
- continuous annealing
- pump
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Abstract
The utility model relates to a dew-point detecting device of continuous annealing furnace, comprising a sampling tube(1). The sampling tube(1) is respectively connected with a three-way tube(2), a four-way connector(5) and a pump(6). The four-way connector(5) and the pump are arranged inside a gauge box(7). A dew-point probe(9) is arranged between a detecting room(8) which is connected with one outlet of the four-way connector(5) and a dew-point device(10). One outlet of the four-way connector(5) which is positioned between the pump(6) and the four-way connector(5) is provided with a temperature sensor(11). A temperature control device(12) is connected with the temperature sensor(11). The outer layer of the sampling tube(1) is coated with a hot mixing band(14). One end of the hot mixing band(14) is fixed on the outlet of a heating furnace(15), while the other end is fixed on an interface of the four-way connector(5). The two sides of the heating furnace(15) are provided with a protective gas tube(17), and the protective gas tube(17) is provided with a humidity controller(18).
Description
The utility model relates to proofing unit, especially belongs to the device that dew point in the steel plate continuous annealing furnace is detected.
During cold-rolled steel sheet annealing, the carbon amount and the surface oxidation degree thereof of steel plate are subjected to the influence of dew point in the annealing furnace very big.Therefore, dew point control accurately is very important to performance behind the steel plate annealing and surface quality.Before this, limited by state of the art, can not measure dew point in the annealing furnace continuously exactly, when annealing temperature reaches 800 ℃ of enforcements, general transmitter just can't directly have been installed.Owing to gas easily condensation in pipeline, the variation of surrounding environment also can cause the detection error simultaneously, and conventional dew point detecting instrument can't accurately detect true dew point in the stove, has influenced plate quality, does not satisfy user's requirement.
The purpose of this utility model is to overcome above-mentioned deficiency, and a kind of energy on-line continuous and the accurate continuous annealing furnace dew point proofing unit that detects dew point in the steel plate annealing stove are provided.
The purpose of this utility model is achieved in that continuous annealing furnace dew point proofing unit mainly comprises stopple coupon, for on-line continuous also accurately detecting dew point in the annealing furnace, on stopple coupon, connect Y-tube respectively, flowrate control valve, rate of flow meter, four-way connection and pump, four-way connection and pump are installed in the instrument box, the sensing chamber and the lead between the dew point hygrometer that are connected an exit of four-way connection are provided with the dew point probe, temperature sensor is equipped with in an exit of the four-way connection between pump and four-way connection, temperature controller and dew point hygrometer common source, temperature controller is connected on the temperature sensor with lead, mix the torrid zone at the stopple coupon outer packaging, an end of mixing the torrid zone is fixed on the exit of process furnace, the other end is fixedly connected on the interface of four-way connection, and there is thermal insulation layer on the surface of mixing the torrid zone.For adjusting certain humidity of input protection gas, the interior dew point of annealing furnace is controlled in the processing requirement scope, in process furnace two sides the shielding gas pipe is housed, on the shielding gas pipe, humidity regulator is housed.
Principle of work: pop one's head in by measuring chamber and dew point from the gas that stopple coupon comes, produce a capacitance signal, this signal changes with humidity, variation at this capacitance signal of dew point transmitter converts frequency variation signal to by a special oscillator in the dew point transmitter, because the dew point probe changes in capacitance that humidity changes and causes makes the concussion frequency of special oscillator change.The variation of this frequency detects by the clock input of the microprocessor in the dew point transmitter, and digitized humidity current signal is provided for this microprocessor.Current signal is delivered to computer and is shown signal numerical value, simultaneously according to manufacturing technique requirent, adjusts humidity regulator and shielding gas pipe and mixes tropical temperature, and the humidity of input gas is controlled in the target zone, thus accurately control
The dew point of shielding gas in the system annealing furnace.
For avoiding gas at the sampling in-tube condensation, mix the torrid zone and thermal insulation layer so stopple coupon outside, twine, so that the temperature in the stopple coupon is when hanging down, controls by temperature controller and to heat up to mixing the torrid zone automatically.By rate of flow meter and flow control valve, the flow of gas in the control stopple coupon.For avoiding sensing chamber (4) internal cause to have water to influence the measuring accuracy of dew point probe, thus below four-way connection connection condensate drain hole,
This device is owing to adopt infrared heating and higher sampler, transmitter and the shielding gas humidity regulator of precision; guaranteed the stable of the interior dew point of annealing furnace; make it solve the problem that conventional dew point detector can't be measured true dew point in the annealing furnace exactly, plate surface quality and performance are improved.
Description of drawings is as follows:
Fig. 1 is a continuous annealing furnace dew point proofing unit structural representation
Fig. 2 detects and the control device synoptic diagram for the continuous annealing furnace dew point
Be described in further detail as follows below in conjunction with accompanying drawing:
Continuous annealing furnace dew point proofing unit mainly comprises stopple coupon (1), for on-line continuous also accurately detecting dew point in the annealing furnace, on stopple coupon (1), connect Y-tube (2), flowrate control valve (3), rate of flow meter (4), four-way connection (5) and pump (6) according to ordinary method respectively.Four-way connection (5) and pump (6) are installed in the instrument box (7), but and do not have interconnected relationship between the instrument box (7).On the lead between the sensing chamber (8) in an exit that is connected four-way connection (5) and the dew point hygrometer (10), be connected dew point probe (9) by lead.The fixing interlocking in an exit of the four-way connection (5) between pump (6) and four-way connection (5) temperature sensor (11), temperature controller (12) is connected on the common source (13) by lead with dew point hygrometer (10).Temperature controller (12) is connected on the temperature sensor (11) with lead.Mix the torrid zone (14) at stopple coupon (1) outer packaging, an end of mixing the torrid zone (14) is fixed on the exit of process furnace (15), and the other end is fixedly connected on the interface of four-way connection (5), and there is thermal insulation layer (16) on the surface of mixing the torrid zone (14).Mix the power supply heating of the torrid zone (14), to regulate its temperature by being attached thereto.For adjusting certain humidity of input protection gas; the interior dew point of annealing furnace is controlled in the processing requirement scope; adopt screw thread or welded and installed shielding gas pipe (17) in process furnace (15) two sides, go up at shielding gas pipe (17) and adopt screw thread or welded and installed humidity regulator (18).
The temperature controller (22) of shielding gas thermal insulation layer and dew point control are controlled by special-purpose computer (21) in the input annealing furnace.
Principle of work: the gas that comes from stopple coupon (1) passes through measuring chamber (8) and dew point probe (9), produce a capacitance signal, this signal changes with humidity, variation at this capacitance signal of dew point transmitter (10) converts frequency variation signal to by a special oscillator in the dew point transmitter (10), because dew point probe (9) changes in capacitance that humidity changes and causes makes the concussion frequency of special oscillator change.The variation of this frequency detects by the clock input of the microprocessor in the dew point transmitter (10), and digitized humidity current signal is provided for this microprocessor.Current signal is delivered to computer (21) and is shown signal numerical value; simultaneously according to manufacturing technique requirent; adjust humidity regulator (18) and shielding gas pipe (17) and mix the temperature of the torrid zone (14); the humidity of input gas is controlled in the target zone, thus the dew point of (15) the interior shielding gas of accurately controlling annealing furnace.
For avoiding gas condensation in stopple coupon (1), mix the torrid zone (14) and thermal insulation layer (16) so outside stopple coupon (1), twine, so that the temperature in the stopple coupon (1) when low, is heated up to mixing the torrid zone (14) automatically by temperature controller (12) control.By rate of flow meter (4) and flow control valve (3), the flow of the interior gas of control stopple coupon (1).For avoiding sensing chamber (4) internal cause to have water to influence the measuring accuracy of dew point probe (9), so connect condensate drain hole (19) in the below of four-way connection (5).
Claims (6)
1; continuous annealing furnace dew point proofing unit; comprise stopple coupon (1); it is characterized in that on stopple coupon (1), connecting respectively Y-tube (2); flowrate control valve (3); rate of flow meter (4); four-way connection (5) and pump (6); four-way connection (5) and pump are installed in the instrument box (7); the sensing chamber (8) and the lead between the dew point hygrometer (10) that are connected an exit of four-way connection (5) are provided with dew point probe (9); temperature sensor (11) is equipped with in an exit of the four-way connection (5) between pump (6) and four-way connection (5); temperature controller (12) and dew point hygrometer (10) common source (13); temperature controller (12) is wired on the temperature sensor (11); mix the torrid zone (14) at stopple coupon (1) outer packaging; an end of mixing the torrid zone (14) is fixed on the exit of process furnace (15); the other end is fixedly connected on the interface of four-way connection (5); there is thermal insulation layer (16) on the surface of mixing the torrid zone (14); in process furnace (15) two sides shielding gas pipe (17) is housed, humidity regulator (18) is housed on shielding gas pipe (17).
2,, it is characterized in that mixing and after connecting in the torrid zone (14) its joint is inserted on temperature controller (12) according to the described continuous annealing furnace dew point of claim 1 proofing unit.
3, continuous annealing furnace dew point proofing unit according to claim 1 is characterized in that at one of them interface of four-way connection (5) condensate drain valve (19) being housed.
4, continuous annealing furnace dew point proofing unit according to claim 1 is characterized in that being connected with vapor pipe (20) on pump (6).
5, continuous annealing furnace dew point proofing unit according to claim 1 is characterized in that between dew point hygrometer (10) and humidity regulator (18) computer (21) being housed.
6, continuous annealing furnace dew point proofing unit according to claim 1 is characterized in that being equipped with on shielding gas pipe (17) and mixes the torrid zone (14) and temperature controller (22), and temperature controller (22) is connected with computer (21) by lead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01249882 CN2490167Y (en) | 2001-06-20 | 2001-06-20 | Dew-point detecting device of continuous annealing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01249882 CN2490167Y (en) | 2001-06-20 | 2001-06-20 | Dew-point detecting device of continuous annealing furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2490167Y true CN2490167Y (en) | 2002-05-08 |
Family
ID=33660157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01249882 Expired - Lifetime CN2490167Y (en) | 2001-06-20 | 2001-06-20 | Dew-point detecting device of continuous annealing furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2490167Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101988150A (en) * | 2010-08-31 | 2011-03-23 | 吕军 | Detection system for detecting oil content in gas in continuous annealing furnace on line |
| CN101988151A (en) * | 2010-08-31 | 2011-03-23 | 吕军 | Continuous annealing furnace gas cleanliness detecting system |
| CN102021308A (en) * | 2010-08-31 | 2011-04-20 | 吕军 | Method for detecting oil content in gas in continuous annealing furnace on line |
| CN102876864A (en) * | 2012-09-25 | 2013-01-16 | 攀钢集团西昌钢钒有限公司 | Control system and closed-loop control method for hearth atmosphere of annealing furnace and closed-loop control method |
| CN103900859A (en) * | 2012-12-26 | 2014-07-02 | 上海巴斯夫聚氨酯有限公司 | Device and method for sampling toxic gas during isocyanate production process |
| CN104775013A (en) * | 2015-04-13 | 2015-07-15 | 艾伯纳工业炉(太仓)有限公司 | Dew-point control system of thermal-forming heating furnace |
-
2001
- 2001-06-20 CN CN 01249882 patent/CN2490167Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101988150A (en) * | 2010-08-31 | 2011-03-23 | 吕军 | Detection system for detecting oil content in gas in continuous annealing furnace on line |
| CN101988151A (en) * | 2010-08-31 | 2011-03-23 | 吕军 | Continuous annealing furnace gas cleanliness detecting system |
| CN102021308A (en) * | 2010-08-31 | 2011-04-20 | 吕军 | Method for detecting oil content in gas in continuous annealing furnace on line |
| CN101988151B (en) * | 2010-08-31 | 2012-06-06 | 吕军 | Continuous annealing furnace gas cleanliness detecting system |
| CN102021308B (en) * | 2010-08-31 | 2012-11-21 | 吕军 | Method for detecting oil content in gas in continuous annealing furnace on line |
| CN102876864A (en) * | 2012-09-25 | 2013-01-16 | 攀钢集团西昌钢钒有限公司 | Control system and closed-loop control method for hearth atmosphere of annealing furnace and closed-loop control method |
| CN103900859A (en) * | 2012-12-26 | 2014-07-02 | 上海巴斯夫聚氨酯有限公司 | Device and method for sampling toxic gas during isocyanate production process |
| CN103900859B (en) * | 2012-12-26 | 2016-03-16 | 上海巴斯夫聚氨酯有限公司 | A kind of isocyanates produce in the sampler of toxic gas and method |
| CN104775013A (en) * | 2015-04-13 | 2015-07-15 | 艾伯纳工业炉(太仓)有限公司 | Dew-point control system of thermal-forming heating furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20110620 Granted publication date: 20020508 |