CN102080932A - Gas online detection device in protective gas heat treatment furnace - Google Patents
Gas online detection device in protective gas heat treatment furnace Download PDFInfo
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- CN102080932A CN102080932A CN 201010569039 CN201010569039A CN102080932A CN 102080932 A CN102080932 A CN 102080932A CN 201010569039 CN201010569039 CN 201010569039 CN 201010569039 A CN201010569039 A CN 201010569039A CN 102080932 A CN102080932 A CN 102080932A
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Abstract
The invention discloses a gas online detection device in a protective gas heat treatment furnace, comprising a sampling port, a gas analysis and control part, an alarm device, a nitrogen gas supply device, a hydrogen gas supply device and a flow control device, wherein the sampling port comprises a first sampling port positioned at a preheat channel area, a second sampling port positioned at a heating chamber area, a third sampling port positioned at a jet flow cooling area and a fourth sampling port positioned at a cooling channel area; the gas analysis and control part comprises a hydrogen gas analyzer, an oxygen gas analyzer for analyzing oxygen gas content, a water analyzer for analyzing water content and a control unit; the control unit acquires analysis data of the hydrogen gas analyzer, the oxygen gas analyzer and the water analyzer and compares the data with preset values; and the nitrogen gas supply device and the hydrogen gas supply device are controlled by the control unit. The gas online detection device disclosed by the invention has a plurality of sampling points, meanwhile, online detection and analysis are carried out on multiple elements, corresponding measures are made according to a corresponding analysis result to ensure high stability of the protective gas in the furnace, and the production safety and the processing quality of workpieces are improved.
Description
Technical field
The present invention relates to a kind of protective gas heat treatment furnace gas on-line measuring device.
Background technology
The protective gas heat-treatment furnace is in operation and will notes the safety of gas circuit, circuit and water system, especially will prevent the air that bleeds, in order to avoid cause high temperature hydrogen, oxygen mixing spontaneous combustion explosion accident.In addition, furnace atmosphere may be contaminated at any time and have influence on the brightness of workpiece and increase air consumption.It is most important how protective gas in the stove (oxygen, water, compositions such as hydrogen) to be implemented reliable online detection, analysis, control.
Summary of the invention
Technical problem to be solved by this invention provides a kind of on-line measuring device that is exclusively used in protective gas heat-treatment furnace furnace gas; it can carry out online detection, analysis and control to protective gas heat-treatment furnace composition of gases within, guarantees the highly stable of the interior protective gas of stove.
For solving above technical problem, the present invention takes following technical scheme:
A kind of protective gas heat treatment furnace gas on-line measuring device, it comprises:
Sample tap, it comprises first sample tap in the preheating channel zone that is positioned at the protective gas heat-treatment furnace, second sample tap that is positioned at the oven area of protective gas heat-treatment furnace, the 3rd sample tap of jet flow cooling zone that is positioned at the protective gas heat-treatment furnace and the 4th sample tap that is positioned at the zone, cooling duct of protective gas heat-treatment furnace;
The gas analysis control part, it comprises the hydrogen analyzer that is used for detecting the gas hydrogen content, the oxygen analyser that is used for detecting the gas oxygen content, the water analyzer that is used for detecting the gas water content, control module, described control module is gathered the analysis data of described hydrogen analyzer, oxygen analyser and water analyzer, and these data and predefined value are compared;
Warning device, it is connected with described control module, and it sends corresponding prompt when oxygen or water content are higher and when hydrogen content is on the low side;
The nitrogen feedway, it comprises source nitrogen, linking to each other with source nitrogen is used for the nitrogen pipeline that confession nitrogen passes through, by the control of described control module and be arranged in magnetic valve on the described nitrogen pipeline, when oxygen content or water content surpass setting value in detecting furnace gas, described control module control magnetic valve is opened, and replenishes nitrogen by nitrogen pipeline in the protective gas heat-treatment furnace;
Hydrogen gas supplying apparatus, it comprises sources of hydrogen, link to each other with sources of hydrogen and to be used for the Hydrogen Line that hydrogen supply gas passes through, by the control of described control module and be arranged in magnetic valve on the described Hydrogen Line, when hydrogen content is lower than setting value in detecting stove, magnetic valve is opened, by Hydrogen Line hydrogen make-up in hydrogen furnace;
Volume control device, it is used for controlling the flow of pipeline gas.
According to the present invention, described first sample tap, second sample tap, the 3rd sample tap and the 4th sample tap are connected to comprehensive sample pipe by arm respectively, this comprehensive sample pipe all is connected with hydrogen analyzer, oxygen analyser and water analyzer, and this can realize by 3 triple valves are set.
Preferably, on described comprehensive sample pipe, be provided with condenser and filter.Described nitrogen pipeline all is connected with described first sample tap, second sample tap, the 3rd sample tap and the 4th sample tap.
Because the utilization of technique scheme, the present invention compared with prior art has following advantage:
Checkout gear of the present invention has a plurality of sampled points (comprising preheating channel, heating clamber, jet flow cooling zone and discharging cooling duct); simultaneously multielement (is comprised water; oxygen; hydrogen) carry out online detection; analyze; regular purges pipeline, and makes relative measures according to corresponding analysis result and guarantee the highly stable of protective gas in the stove, improves production security and pipe fitting crudy.
Description of drawings
Fig. 1 is an operation principle schematic diagram of the present invention.
Fig. 2 is a side schematic diagram of the present invention;
Wherein: 1, first sample tap; 2, second sample tap; 3, the 3rd sample tap; 4, the 4th sample tap; 5, nitrogen pipeline; 6, magnetic valve; 7, concentrate delivery pipe.
The specific embodiment
Below in conjunction with specific embodiment and accompanying drawing the present invention is further described, but the invention is not restricted to this embodiment.
As illustrated in fig. 1 and 2; action principle according to the protective gas heat treatment furnace gas on-line measuring device of present embodiment is; first sample tap 1 from the preheating channel zone that is positioned at protective gas heat-treatment furnace stove; be positioned at second sample tap 2 of the oven area of protective gas heat-treatment furnace; the 4th sample tap 4 that is arranged in the 3rd sample tap 3 of jet flow cooling zone and is positioned at the zone, cooling duct of protective gas heat-treatment furnace is collected sample gas; after the mixing; filter through condenser cooling and filter, under the effect of aspiration pump, enter water analyzer (CI2000-DP) respectively; oxygen analyser (CI2000-DH) and hydrogen analyzer (CI2000-RQD) are analyzed.All can be transported to control module through the data after each Instrumental Analysis, control module is the PLC controller, and it compares data and a preset value of collecting, and makes respective reaction.In this example, the PLC controller is controlled warning device, nitrogen supply (NS) device and hydrogen feeding mechanism.Specific as follows:
When the PLC controller surpasses preset value at oxygen content or water content, send signal and give warning device, the correspondence indication alarm lamp of warning device is bright, simultaneously, the magnetic valve of PLC control nitrogen supply (NS) device is opened, and feeds a large amount of nitrogen by nitrogen supply (NS) device (liquid nitrogen) by each sample tap in hydrogen furnace, thereby reduce the content of oxygen in the gas rapidly, when not working to alarm lamp, the nitrogen supply (NS) device stops for nitrogen, and it is normal that the furnace gas composition recovers.
The PLC controller is at hydrogen content (furnace pressure) when being lower than preset value, send signal and give warning device, the correspondence indication alarm lamp of warning device is bright, simultaneously, the magnetic valve of PLC control hydrogen feeding mechanism is opened,, do not worked until alarm lamp by each sample tap hydrogen make-up in hydrogen furnace by hydrogen feeding mechanism (preparing hydrogen by ammonia decomposition), it is normal that furnace pressure recovers.
The sample gas of obtaining from each sample tap is after analyzing through each analytical instrument, from concentrating delivery pipe 7 dischargings.It will be understood by those skilled in the art that in the place of needs flowmeter can be set controls gas flow.
Checkout gear of the present invention has a plurality of sampled points (comprising preheating channel, heating clamber, jet flow cooling zone and discharging cooling duct), simultaneously multielement (is comprised water, oxygen; hydrogen) carry out online detection; analyze, can guarantee the highly stable of the interior protective gas of stove, guarantee to produce and carry out smoothly.
The foregoing description only is explanation technical conceive of the present invention and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All equivalences that spirit essence is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (5)
1. protective gas heat treatment furnace gas on-line measuring device, it is characterized in that: described checkout gear comprises:
Sample tap, it comprises first sample tap in the preheating channel zone that is positioned at described protective gas heat-treatment furnace, second sample tap that is positioned at the oven area of described protective gas heat-treatment furnace, the 3rd sample tap of jet flow cooling zone that is positioned at the protective gas heat-treatment furnace and the 4th sample tap that is positioned at the zone, cooling duct of protective gas heat-treatment furnace;
The gas analysis control part, it comprises the hydrogen analyzer that is used for detecting the gas hydrogen content, the oxygen analyser that is used for detecting the gas oxygen content, the water analyzer that is used for detecting the gas water content, control module, described control module is gathered the analysis data of described hydrogen analyzer, oxygen analyser and water analyzer, and these data and predefined value are compared;
Warning device, it is connected with described control module, and it sends corresponding prompt when oxygen or water content are higher and when hydrogen content is on the low side;
The nitrogen feedway, it comprises source nitrogen, linking to each other with source nitrogen is used for the nitrogen pipeline that confession nitrogen passes through, by the control of described control module and be arranged in magnetic valve on the described nitrogen pipeline, when oxygen content or water content surpass setting value in detecting furnace gas, described control module control magnetic valve is opened, and replenishes nitrogen by nitrogen pipeline in the protective gas heat-treatment furnace;
Hydrogen gas supplying apparatus, it comprises sources of hydrogen, link to each other with sources of hydrogen and to be used for the Hydrogen Line that hydrogen supply gas passes through, by the control of described control module and be arranged in magnetic valve on the described Hydrogen Line, when hydrogen content is lower than setting value in detecting stove, magnetic valve is opened, by Hydrogen Line hydrogen make-up in the protective gas heat-treatment furnace;
Volume control device, it is used for controlling the flow of pipeline gas.
2. protective gas heat treatment furnace gas on-line measuring device according to claim 1; it is characterized in that: described first sample tap, second sample tap, the 3rd sample tap and the 4th sample tap are connected to comprehensive sample pipe by arm respectively, and described comprehensive sample pipe all is connected with described hydrogen analyzer, oxygen analyser and water analyzer.
3. protective gas heat treatment furnace gas on-line measuring device according to claim 2 is characterized in that: be provided with condenser and filter on described comprehensive sample pipe.
4. protective gas heat treatment furnace gas on-line measuring device according to claim 2 is characterized in that: described nitrogen pipeline all is connected with described first sample tap, second sample tap, the 3rd sample tap and the 4th sample tap.
5. protective gas heat treatment furnace gas on-line measuring device according to claim 1, it is characterized in that: described sources of hydrogen is the preparing hydrogen by ammonia decomposition device.
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| CN 201010569039 CN102080932A (en) | 2010-12-02 | 2010-12-02 | Gas online detection device in protective gas heat treatment furnace |
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| CN 201010569039 CN102080932A (en) | 2010-12-02 | 2010-12-02 | Gas online detection device in protective gas heat treatment furnace |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879155A (en) * | 2012-09-28 | 2013-01-16 | 武汉钢铁(集团)公司 | Online leakage detection method and device for non-oxidation furnace radiant tube containing shielding hydrogen gas |
| CN103134328A (en) * | 2011-11-25 | 2013-06-05 | 无锡市凯天环保科技有限公司 | Method and device for industrial furnace atmosphere automatic combustion control |
| CN103526139A (en) * | 2013-09-24 | 2014-01-22 | 苏州新长光热能科技有限公司 | Nitrogen supply and control device and method of aluminum annealing furnace |
| CN107812899A (en) * | 2016-09-13 | 2018-03-20 | 宝钢特钢有限公司 | On-line checking molds the device and detection method of argon gas protecting effect |
| CN109355503A (en) * | 2018-10-24 | 2019-02-19 | 江苏钛谷科技有限公司 | A kind of method and system preparing hydrogen reducing metal oxide ore using constituents |
| CN110260670A (en) * | 2019-06-21 | 2019-09-20 | 中材科技股份有限公司 | A kind of control device and its control method of the interior fusing atmosphere of electric smelter furnace |
| CN110806463A (en) * | 2019-10-29 | 2020-02-18 | 首钢京唐钢铁联合有限责任公司 | Method and system for detecting atmosphere in annealing furnace |
| CN112180046A (en) * | 2020-09-30 | 2021-01-05 | 张家港扬子江冷轧板有限公司 | Galvanizing furnace nose atmosphere on-line measuring device |
| CN117269429A (en) * | 2023-09-21 | 2023-12-22 | 中科卓异环境科技(东莞)有限公司 | Furnace atmosphere detection system and detection method |
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| CN201892428U (en) * | 2010-12-02 | 2011-07-06 | 苏州中门子科技有限公司 | On-line detection device for gas in protective gas heat treatment furnace |
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| US5795147A (en) * | 1995-11-27 | 1998-08-18 | The Boc Group, Inc. | Furnace having regulated flow rate of inerting gas |
| CN101364115A (en) * | 2008-09-23 | 2009-02-11 | 熊猫电子集团有限公司 | Nitrogen closed-loop control method and system |
| CN201311197Y (en) * | 2008-11-05 | 2009-09-16 | 锦州航星真空设备有限公司 | Hydrogen gas sintering furnace gas circuit automatic control system |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103134328A (en) * | 2011-11-25 | 2013-06-05 | 无锡市凯天环保科技有限公司 | Method and device for industrial furnace atmosphere automatic combustion control |
| CN102879155A (en) * | 2012-09-28 | 2013-01-16 | 武汉钢铁(集团)公司 | Online leakage detection method and device for non-oxidation furnace radiant tube containing shielding hydrogen gas |
| CN103526139A (en) * | 2013-09-24 | 2014-01-22 | 苏州新长光热能科技有限公司 | Nitrogen supply and control device and method of aluminum annealing furnace |
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| CN107812899A (en) * | 2016-09-13 | 2018-03-20 | 宝钢特钢有限公司 | On-line checking molds the device and detection method of argon gas protecting effect |
| CN109355503A (en) * | 2018-10-24 | 2019-02-19 | 江苏钛谷科技有限公司 | A kind of method and system preparing hydrogen reducing metal oxide ore using constituents |
| CN110260670A (en) * | 2019-06-21 | 2019-09-20 | 中材科技股份有限公司 | A kind of control device and its control method of the interior fusing atmosphere of electric smelter furnace |
| CN110260670B (en) * | 2019-06-21 | 2024-03-12 | 南京玻璃纤维研究设计院有限公司 | Control device and control method for melting atmosphere in electric melting furnace |
| CN110806463A (en) * | 2019-10-29 | 2020-02-18 | 首钢京唐钢铁联合有限责任公司 | Method and system for detecting atmosphere in annealing furnace |
| CN112180046A (en) * | 2020-09-30 | 2021-01-05 | 张家港扬子江冷轧板有限公司 | Galvanizing furnace nose atmosphere on-line measuring device |
| CN117269429A (en) * | 2023-09-21 | 2023-12-22 | 中科卓异环境科技(东莞)有限公司 | Furnace atmosphere detection system and detection method |
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Application publication date: 20110601 |