CN204758558U - A oxygen content monitoring and early warning device for carbide furnace atmoseal section - Google Patents
A oxygen content monitoring and early warning device for carbide furnace atmoseal section Download PDFInfo
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- CN204758558U CN204758558U CN201520232398.1U CN201520232398U CN204758558U CN 204758558 U CN204758558 U CN 204758558U CN 201520232398 U CN201520232398 U CN 201520232398U CN 204758558 U CN204758558 U CN 204758558U
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- oxygen content
- oxygen
- warning device
- signal amplification
- sealing gland
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Abstract
The utility model discloses a be applicable to the oxygen content monitoring and the early warning device that use in the high low temperature carbonization furnace atmoseal section of carbon fiber production line, include: the oxygen sensor is installed on atmoseal section gas vent pipeline for detect by the oxygen content in the sample gas in monitoring district, and convert the oxygen content to the signal of telecommunication, the signal amplification module, instrumentation amplifier component amplifier circuit, the signal amplification module is connected with the oxygen sensor, computer acquisition processing module is connected with the signal amplification module, the collection that digitizes of oxygen content signal that the process sent here the signal amplification module is enlargied to carry out the data operation storage, human -computer interaction operating panel to and, alarm module. Oxygen content monitoring and early warning device detect the oxygen content and the rate of change of combustion gas, according to data and the computation result who records, based on the field operation experience, provide the warning message for the field operation personnel through alarm device, supply operating personnel to judge as the occasion requires to handle and use.
Description
Technical field
The utility model relates to a kind of oxygen content monitoring device, specifically, relates to oxygen content monitoring and the prior-warning device of the gas sealing system design of a kind of high temperature carbonization furnace of using for carbon fiber production line and low temperature carbonization furnace.
Background technology
Domestic carbon fiber production line has had suitable scale, and from hundred tons of lines to kiloton line, quantity increases day by day.High temperature carbonization furnace wherein and low temperature carbonization furnace all have employed a kind of special device--fire door sealing gland section, isolate furnace atmosphere and external environment, its main task is exactly both ensured that extraneous air can not enter in high/low temperature carbide furnace, guarantees that again the gas in stove can not be leaked to the interior space.If enough outside airs enter in stove, fiber product fracture of wire in stove can be caused, whole production line time serious, can be caused to stop.And once the whole line economic loss caused of stopping is huge.
Therefore; if can promptly detect the oxygen content of sealing gland section in real time; and to the potential risk of fracture of wire or parking may be caused to give the alarm to operating personnel in advance; whole line stabilization then can be kept dramatically to run; boost productivity; reduce stop time, greatly improve business efficiency.
For the oxygen content detection technique in carbide furnace, current traditional method is, uses an accurate oxygen analyser to patrol and examine the multiple sampled point of body of heater, and mostly adopts the method for manual switching sampled point to patrol and examine.And this mode of patrolling and examining, there is following shortcoming and operational inconvenience:
1, because oxygen analyser is when starting to carry out sample detecting to each sampled point, first needing first the gas in the sampling pipe between monitoring point to oxygen analyser to be extracted out, then just can measure the gas of monitoring point.Length according to sampling pipe is different, and this interval time can at 30 seconds to 2 minutes not etc.So the real-time of routine inspection mode is not good enough.
2, sampling conduit is easy to blocking.Due to the singularity (containing compositions such as tar) of the atmosphere in stove, sampling pipe easily blocks, so most producer is all the oxygen content numerical value that mode by inspecting a few secondary data every day by random samples checks furnace atmosphere, records of values in tables of data as processing parameter record.
3, this traditional oxygen determination mode cannot carry out absolutely real time on-line monitoring to the oxygen content numerical value of sealing gland section and variation tendency thereof.
How real-time oxygen content monitoring is carried out to sealing gland section, as a technical need, seemed day by day urgent.Some producers are that sealing gland section has installed separately accurate oxygen analyser, but oxygen analyser only just show the oxygen content numerical value recorded, and still requires operating personnel's sampling record at any time, are not real-time monitoring truly.Meanwhile, this kind of design still employs longer sampling pipe and sampling pump, and the real-time of data is not strong.
So real-time oxygen content monitoring system needs to have features:
1, extremely strong real-time sampled measurements, as far as possible short sample lines.
2, according to atmosphere section operating characteristic, the lambda sensor of requirement has higher precision and wider measurement range.
3, software systems should allow operating personnel to arrange in conjunction with the operating experience of oneself strategy of reporting to the police.
Utility model content
The purpose of this utility model is to provide a kind of monitoring of the oxygen content for carbide furnace sealing gland section of design and prior-warning device, survey calculation is carried out to the oxygen content numerical value of carbide furnace sealing gland section and variation tendency, and according to the given alarm limit of operating personnel, provide early warning type alarm to field staff.
The technological means that the utility model solution prior art Problems existing adopts is: a kind of oxygen content monitoring for carbon fibre carbonizing furnace gas envelope section and prior-warning device, be installed in the top vent of carbide furnace sealing gland section, comprise: oxygen sensor, be arranged on sealing gland section exhausr port pipeline, for detecting the oxygen content in the sample gas in monitored district, and convert oxygen content to electric signal; Signal amplification module, instrumentation amplifier composition amplifying circuit, described signal amplification module is connected with oxygen sensor, for being amplified by the electric signal obtained; Computer acquisition processing module, is connected with signal amplification module, and that sends here signal amplification module carries out digital collection through the oxygen content signal amplified, and carries out data operation storage; Man-machine interactive operation panel, shows the data that computer acquisition module transmits, and is responsible for the parameter of operating personnel to be sent to computer acquisition processing module; And alarm module, comprises redness, yellow, green indicating lamp and hummer.
Further, described oxygen sensor is the one in zirconia-type oxygen sensor or oxygen cell type oxygen sensor;
Again further, described computer acquisition disposal system adopts ADUC7060 series A RM single-chip microcomputer to make, and the sampling AD precision that described ADUC7060 series monolithic system carries out sampling is up to 24;
Again further, described man-machine interactive operation panel is made up of commercial HMI unit.
The invention, about the method for the monitoring of the above-mentioned oxygen content for carbide furnace sealing gland section and early warning, comprises step:
1) the sample gas in monitored district is discharged by sealing gland section, enters oxygen sensor, and oxygen sensor converts the oxygen content in sample gas to electric signal;
2) signal of oxygen sensor is connected to signal amplification module, and signal amplification module is by step 1) electric signal that obtains amplifies;
3) the oxygen content signal through amplifying is sent to computer acquisition processing module and carries out digital collection, and carries out data operation storage;
4) computer acquisition processing module is sent to man-machine interactive operation panel operation result in the mode of network communication, and alerting signal is sent to alarm module.
Further, above-mentioned steps 3) in data operation storing process comprise:
1) judge whether the oxygen content numerical value measured exceedes the alarm limit of setting, if so, alarm module red alarm lamp instruction; If not, enter step 2),
2) judge whether instantaneous rate of change exceedes the alarm limit of setting, if so, alarm module yellow alarm lamp instruction;
If not, be judged as that oxygen content data are normal, alarm module green indicating lamp indicates.
The invention is according to the instantaneous rate of change of the oxygen content numerical value detected and numerical value, judge whether tested region has air to enter wherein, first judge whether the oxygen content numerical value measured exceedes the alarm limit of setting, if exceed alarm limit, be then judged as that numerical value transfinites red alarm; Then judge whether instantaneous rate of change exceedes the alarm limit of setting, if overstepped the extreme limit, be then judged as that rate of change exceeds standard Amber alert, if oxygen content numerical value does not exceed standard and instantaneous rate of change does not exceed standard yet, then be judged as that oxygen content data are normal, indicate with green indicating lamp.
Wherein, a condition precedent of correct measurement oxygen content is that sealing gland district internal pressure is normal pressure-fired, and the gas in sealing gland section is discharged to outside stove via warning device; Representing such measurement is accurately.
On the contrary, if the pressure in sealing gland section cannot ensure pressure-fired, air will via gas outlet reverse osmosis to sealing gland section, the oxygen content that will be the air that reverse osmosis is come in that lambda sensor detects, obviously, this measured value will far away higher than micro-oxygen content numerical value normal in sealing gland section.Micro amount of oxygen measurement data in normal sealing gland section is generally at 0 ~ 50ppm., and when there is air reverse osmosis, the data recorded generally will be greater than 1%, i.e. 10000ppm.System is based on such a measured value, and nature can provide red measured value overload alarm.
The course of work of the utility model device is: oxygen content early warning system is arranged on the gas outlet at fire door sealing gland section top, and the gas in sealing gland section is discharged into outside stove via gas outlet and early warning system, is discharged by workshop exhaust system.This device detects and the preheating of prior-warning device probe simultaneously, system initialization self-inspection, when self-inspection is normal, early warning system carries out oxygen content data acquisition with the speed of 10 times/second, stores in system temporarily, and carry out differentiating dV/dt, the oxygen content of gas of discharging and rate of change thereof are detected, according to the data budget result recorded, based on execute-in-place experience, there is provided warning message by warning device to site operation personnel, judge process as the occasion requires for operating personnel.
This prior-warning device is installed on carbide furnace atmosphere section, can provide warning in a case where to field staff:
1, the oxygen content measured transfinites;
2, oxygen content has the trend sharply raised, and namely pace of change transfinites;
3, PD (ratio/differential) warning mode considering oxygen content numerical value and pace of change is reported to the police.
Accompanying drawing explanation
Fig. 1 is oxygen content monitoring and prior-warning device hardware principle block diagram;
Fig. 2 is oxygen content monitoring and prior-warning device process flow diagram.
Embodiment
The utility model is further illustrated below in conjunction with drawings and Examples.
Embodiment 1
As shown in Figure 1 and Figure 2, a kind of oxygen content monitoring for carbon fibre carbonizing furnace gas envelope section and prior-warning device, be installed in the top vent of carbide furnace sealing gland section, comprise: zirconia-type oxygen sensor, be arranged on sealing gland section exhausr port pipeline, for detecting the oxygen content in the sample gas in monitored district, and convert oxygen content to electric signal; Signal amplification module, instrumentation amplifier composition amplifying circuit, signal amplification module is connected with oxygen sensor, for being amplified by the electric signal obtained; Computer acquisition processing module, is connected with signal amplification module, and that sends here signal amplification module carries out digital collection through the oxygen content signal amplified, and carries out data operation storage.Adopt computer acquisition processing module ADUC7060 series A RM single-chip microcomputer to make, the sampling AD precision that ADUC7060 series monolithic system carries out sampling is up to 24; Man-machine interactive operation panel, be made up of commercial HMI unit, it shows the data that computer acquisition module transmits, and is responsible for the parameter of operating personnel to be sent to computer acquisition processing module; And alarm module, comprises redness, yellow, green indicating lamp and hummer.
The step of its monitoring and early warning is:
1) the sample gas in monitored district is discharged by sealing gland section, enters zirconia-type oxygen sensor, and oxygen sensor converts the oxygen content in sample gas to electric signal; 2) signal of oxygen sensor is connected to signal amplification module, and signal amplification module is by step 1) electric signal that obtains amplifies; 3) the oxygen content signal through amplifying is sent to computer acquisition processing module and carries out digital collection, and carries out data operation storage; 4) computer acquisition processing module is sent to man-machine interactive operation panel operation result in the mode of network communication, and alerting signal is sent to alarm module.
Wherein, above-mentioned steps 3) in data operation storing process comprise:
1) judge whether the oxygen content numerical value measured exceedes the alarm limit of setting, if so, alarm module red alarm lamp instruction; If not, enter step 2),
2) judge whether instantaneous rate of change exceedes the alarm limit of setting, if so, alarm module yellow alarm lamp instruction;
If not, be judged as that oxygen content data are normal, alarm module green indicating lamp indicates.
As a kind of configuration of Eco-power high reliability, following configuration is adopted to achieve the model machine of oxygen content early warning system.
1, the sensor of oxygen sensor used in vehicle as oxygen determination of automobile emission gas analyzer is adopted.This sensor directly assigns in a threeway on the gas exhaust duct of sealing gland section, and the exhaust of sealing gland section directly contacts lambda sensor, and such layout will ensure that the oxygen content change of sensor to sealing gland section is reacted rapidly.
2, ADUC7060 Single Chip Microcomputer (SCM) system is adopted to carry out sampling and data processing.ADUC7060 can provide the sampling precision of 24, and system configuration MODBUS communication interface, for carrying out communication with HMI man-machine interface.
3, select the character type HMI module of band MODBUS communication, HMI module carries out data communication by MODBUS agreement and ADUC7060 Single Chip Microcomputer (SCM) system, realizes the display of measurement data, and alarm condition shows, and high alarm setting value is revised, alarm mode setting etc.
4, configure one piece of 8 output relay output board, be connected with Single Chip Microcomputer (SCM) system by data line.Relay exports and is defined as OUT0---red alarm lamp successively
OUT1---yellow alarm lamp
OUT2---green indicating lamp
OUT3---warning horn (sounding alarm)
The output for subsequent use of OUT4---warning red
The output for subsequent use of OUT5---warning yellow
Claims (4)
1., for oxygen content monitoring and the prior-warning device of carbide furnace sealing gland section, be installed in the top vent of carbide furnace sealing gland section, it is characterized in that, comprising:
Oxygen sensor, being arranged on sealing gland section exhausr port pipeline, for detecting the oxygen content in the sample gas in monitored district, and converting oxygen content to electric signal;
Signal amplification module, instrumentation amplifier composition amplifying circuit, described signal amplification module is connected with oxygen sensor, for being amplified by the electric signal obtained;
Computer acquisition processing module, is connected with signal amplification module, and that sends here signal amplification module carries out digital collection through the oxygen content signal amplified, and carries out data operation storage;
Man-machine interactive operation panel, shows the data that computer acquisition module transmits, and is responsible for the parameter of operating personnel to be sent to computer acquisition processing module; And,
Alarm module, comprises red alarm lamp, yellow alarm lamp, green indicating lamp and hummer.
2., according to claim 1 for oxygen content monitoring and the prior-warning device of carbide furnace sealing gland section, it is characterized in that, described oxygen sensor is the one in zirconia-type oxygen sensor or oxygen cell type oxygen sensor.
3. the monitoring of the oxygen content for carbide furnace sealing gland section according to claim 1 and prior-warning device, it is characterized in that, described computer acquisition disposal system adopts ADUC7060 series A RM single-chip microcomputer to make, and the sampling AD precision that described ADUC7060 series monolithic system carries out sampling is up to 24.
4. the monitoring of the oxygen content for carbide furnace sealing gland section according to claim 1 and prior-warning device, it is characterized in that, described man-machine interactive operation panel is made up of commercial HMI unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520232398.1U CN204758558U (en) | 2015-04-17 | 2015-04-17 | A oxygen content monitoring and early warning device for carbide furnace atmoseal section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520232398.1U CN204758558U (en) | 2015-04-17 | 2015-04-17 | A oxygen content monitoring and early warning device for carbide furnace atmoseal section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204758558U true CN204758558U (en) | 2015-11-11 |
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|---|---|---|---|
| CN201520232398.1U Expired - Fee Related CN204758558U (en) | 2015-04-17 | 2015-04-17 | A oxygen content monitoring and early warning device for carbide furnace atmoseal section |
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| CN (1) | CN204758558U (en) |
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2015
- 2015-04-17 CN CN201520232398.1U patent/CN204758558U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151111 Termination date: 20160417 |