CN203587531U - Paramagnetic oxygen analyzer - Google Patents
Paramagnetic oxygen analyzer Download PDFInfo
- Publication number
- CN203587531U CN203587531U CN201320582376.9U CN201320582376U CN203587531U CN 203587531 U CN203587531 U CN 203587531U CN 201320582376 U CN201320582376 U CN 201320582376U CN 203587531 U CN203587531 U CN 203587531U
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- oxygen
- nitrogen
- channel
- circuit module
- controller
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The utility model provides a paramagnetic oxygen analyzer. The paramagnetic oxygen analyzer comprises a box body, wherein the box body is internally provided with an oxygen channel, a nitrogen channel and a controller, wherein the oxygen channel and the nitrogen channel are both connected with the controller; a first ball valve, a first pressure reduction valve, a first pressure meter, a first oxygen and nitrogen mass flow controller and a first unidirectional valve are sequentially arranged between an outlet and an inlet of the oxygen channel; a second ball valve, a second pressure reduction valve, a second pressure meter, a second oxygen and nitrogen mass flow controller and a second unidirectional valve are sequentially arranged between an outlet and an inlet of the nitrogen channel; the outlets of the oxygen channel and the nitrogen channel are connected with an inlet of a gas mixing cylinder; an outlet of the gas mixing cylinder is connected with a combustion cylinder; the gas mixing cylinder is connected with a paramagnetic oxygen sensor. The paramagnetic oxygen analyzer provided by the utility model is simple in structure, high in data measurement precision, good in stability, rapid in response, and long in service life.
Description
Technical field
The utility model relates to a kind of analyser, particularly a kind of along magnetic oxygen analyzer.
Background technology
Any material, under the effect of external magnetic field, all can be magnetized, and presents certain magnetic characteristic.In material outside magnetic field, be magnetized, itself can produce a complementary field, complementary field is identical with outer magnetic field direction, and this material is attracted, and shows as paramagnetism; Opposite direction, this material is ostracised, and shows as diamagnetism.Gas medium also can be magnetized in magnetic field, and also shows respectively paramagnetism or diamagnetism according to the difference of gas.If oxygen, nitrogen monoxide, nitrogen dioxide etc. are paramagnetism gas, hydrogen, nitrogen, carbon dioxide, methane etc. are diamagnetism gas.Along magnetic oxygen analyzer, be more much higher than general gas flow according to the volume susceptibility of oxygen, in magnetic field, there is the analytical instrument of oxygen level in a kind of measurement gas that the principle of high paramagnetic characteristic makes.
Existing critical oxygen index analyser, reasonable not owing to arranging, thereby exist following some problem: (1) is to adopt to reach mixed effect at the little fine sand stone of the bottom of combustion barrel lay to the mixing of oxygen and nitrogen, thereby can cause undercompounding, the accuracy that impact is measured, causes result accuracy poor.(2) control of oxygen and nitrogen flow is mainly contained to two kinds of modes: the first is to utilize a glass rotameter to control the total flow of oxygen, nitrogen mixture, by regulating the pressure of oxygen, nitrogen to change the oxygen concentration of mixed gas; The second is to utilize two glass rotameters to control respectively the flow of oxygen, nitrogen, regulates the flow of mixed gas, thereby regulates the concentration of oxygen in mixed gas; These two kinds of modes regulate coarse, and poor accuracy will reach a stable concentration very difficult, and the accuracy of measurement is on duty mutually; The control out of true of oxygen, nitrogen flow, can affect the accuracy of measurement result, causes result accuracy poor.(3) be not provided with along magnetic oxygen transducer, thereby the whole process response time is excessively slow, precision is not high enough, and also fall short of serviceable life.
Utility model content
The technical problems to be solved in the utility model is the defect that overcomes prior art, provide a kind of simple in structure, measurement data accurately, the suitable magnetic oxygen analyzer of good stability.
In order to solve the problems of the technologies described above, the utility model provides following technical scheme:
The utility model is a kind of comprises casing along magnetic oxygen analyzer, is provided with oxygen channel, channel of nitrogen, controller in described casing, and described oxygen channel is all connected with described controller with channel of nitrogen;
Between the outlet of described oxygen channel and entrance, be provided with successively the first ball valve, the first reduction valve, the first tensimeter, the first oxygen nitrogen mass flow controller and the first retaining valve;
Between the outlet of described channel of nitrogen and entrance, be provided with successively the second ball valve, the second reduction valve, the second tensimeter, the second oxygen nitrogen mass flow controller and the second retaining valve;
The outlet of described oxygen channel and channel of nitrogen is all connected the entrance of gas mixing drum, and the outlet of described gas mixing drum connects combustion barrel.Described gas mixing drum is connected with along magnetic oxygen transducer.
Further, described oxygen nitrogen mass flow controller comprises oxygen nitrogen mass flow sensor and flow control electromagnetic proportional valve, described oxygen nitrogen mass flow sensor connects signal conditioning circuit module, described signal conditioning circuit module connects signal controlling algorithm circuit module, described signal controlling algorithm circuit module connects signal output driving circuit module, described signal output driving circuit module connection traffic is controlled electromagnetic proportional valve, described signal conditioning circuit module connects signal output apparatus module, described signal controlling algorithm circuit module connection control signal input circuit module.
Further, described controller is programmable controller PLC and expansion module.
The beneficial effect that the utility model reaches is:
(1) in the prime of combustion barrel, increase the gas mixing drum of one-level special use, can make oxygen, nitrogen fully mix, thereby solve because oxygen, nitrogen mix the inaccurate problem of the inhomogeneous measurement result causing.
(2) on gas mixing drum, be provided with along magnetic oxygen transducer, thereby can control more accurately oxygen, nitrogen ratio, increase the degree of accuracy of measurement result.
(3) the utility model can be according to the oxygen nitrogen mass rate setting value receiving, and by the accurate mass rate setting value of controlling as receiving of the oxygen nitrogen mass rate of instrument, precision is high, good stability, antijamming capability are strong.Can export the voltage signal of monitored mass rate, be convenient to transfer to host computer or master controller and carry out screen display.
(4) critical oxygen index instrument provided by the utility model, has improved test efficiency, shortened the test duration of a style, and test result is visual, accurate.
(5) by arranging along magnetic oxygen transducer, improved the response time, owing to disturbing without background gas, thereby measurement result precision is higher, and serviceable life is restriction not.
(6) the utility model is simple in structure, easy to operate, stability is strong, and measuring result error is little.
Accompanying drawing explanation
Accompanying drawing is used to provide further understanding of the present utility model, and forms a part for instructions, is used from explanation the utility model with embodiment mono-of the present utility model, does not form restriction of the present utility model.In the accompanying drawings:
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of oxygen nitrogen mass flow controller.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described, should be appreciated that preferred embodiment described herein is only for description and interpretation the utility model, and be not used in restriction the utility model.
As depicted in figs. 1 and 2, a kind of critical oxygen index analyser that is provided with oxygen nitrogen mass flow controller of the utility model, comprise casing, be provided with oxygen channel, channel of nitrogen, controller in described casing, described oxygen channel is all connected with described controller with channel of nitrogen; Between the outlet of described oxygen channel and entrance, be provided with successively the first ball valve 1, the first reduction valve 2, the first tensimeter 3, the first oxygen nitrogen mass flow controller 4 and the first retaining valve 5; Between the outlet of described channel of nitrogen and entrance, be provided with successively the second ball valve 6, the second reduction valve 7, the second tensimeter 8, the second oxygen nitrogen mass flow controller 9 and two retaining valves 10; The outlet of described oxygen channel and channel of nitrogen is all connected the entrance of gas mixing drum 19, and the outlet of described gas mixing drum 19 connects combustion barrel 11.Before described oxygen channel and channel of nitrogen, be all provided with successively gas gauge, gas cylinder reduction valve, described gas cylinder reduction valve is connected respectively at welding bottle, nitrogen cylinder.Described gas mixing drum 19 is connected with along magnetic oxygen transducer 20.
Described two oxygen nitrogen mass flow controllers include oxygen nitrogen mass flow sensor 12 and flow control electromagnetic proportional valve 13, described oxygen nitrogen mass flow sensor 12 connects signal conditioning circuit module 14, described signal conditioning circuit module 14 connects signal controlling algorithm circuit module 15, described signal controlling algorithm circuit module 15 connects signal output driving circuit module 16, described signal output driving circuit module 16 connection traffics are controlled electromagnetic proportional valve 13, described signal conditioning circuit module 14 connects signal output apparatus module 17, described signal controlling algorithm circuit module 15 connection control signal input circuit modules 18.Consider the stability of system, each part is screwed in mechanical framework structure, between each module, by connecting plug-in unit, is electrically connected.Air-flow is first through peroxide nitrogen mass flow sensor 12, oxygen nitrogen mass flow sensor 12 output monitoring voltage signals are to control circuit, by control circuit output corresponding signal, drive flow control electromagnetic proportional valve 13, by controlling the different opening size of flow control electromagnetic proportional valve 13, reach the object of controlling oxygen nitrogen mass rate.
Described controller is programmable controller PLC and expansion module.
Controller is oxygen concentration, the nitrogen gas concn setting value that this analyser is set from man-machine interface, calculating converts flow to, pass through again expansion module, digital control amount is changed into analog output to oxygen nitrogen mass flow controller, by analog to digital converter, actual flow is fed back to PLC, last by PLC by detected value digital output the man-machine interface to critical oxygen index analyser.
The utility model increases the gas mixing drum of one-level special use by the prime at combustion barrel, can make oxygen, nitrogen fully mix, thereby solves because oxygen, nitrogen mix the inaccurate problem of the inhomogeneous measurement result causing.On gas mixing drum, be provided with along magnetic oxygen transducer, thereby can control more accurately oxygen, nitrogen ratio, increase the degree of accuracy of measurement result.By oxygen nitrogen mass flow controller is set, improved test efficiency, shortened the test duration of a sample, and test result is visual, accurate.In addition, the utility model is simple in structure, easy to operate, stability is strong, and measuring result error is little.
The utility model is in use:
1, oxygen index analyser is placed on workbench and (is preferably placed in fuming cupboard) and fixes steadily.With random subsidiary connecting pipe and source of the gas joint component, by oxygen, nitrogen interface after instrument, connect with corresponding oxygen, nitrogen cylinder interface respectively; Use again the nylon tube one termination combustion barrel base of random arrangement, another termination instrument back side nitrogen and oxygen interface.
2, power-on, waits for the touch-screen starting of analyser.Open oxygen and nitrogen, pressure is transferred to 0.1Mpa; Valve cancel key on point touching screen cleans oxygen valve and nitrogen valve afterwards.
3, select initial oxygen concentration.By observing the aerial ignition conditions of sample, if sample burns rapidly, select initial oxygen concentration about 18%(volume fraction); If sample smoulder or unstable combustion, the initial oxygen concentration of selection is about 21%(volume fraction); If sample is discontinuous burning in air, the initial oxygen concentration of selection is at least 25%(volume fraction), this depends on the complexity of lighting or extinguishes the length of front burning time.
4, guarantee that combustion barrel is in plumbness.Sample is vertically mounted on to the center of described combustion barrel, the top that makes sample is lower than combustion barrel top mouth 100mm at least, and the expose portion of the minimum point of sample will be higher than the end face 100mm of the gas dispersion apparatus of combustion barrel pedestal simultaneously.
5, oxygen, nitrogen start to flow into mixing chamber, and oxygen concentration reaches setting value, before lighting sample, at least with mixed gas, rinse combustion barrel 30s.Guarantee to light and sample main combustion period between gas flow rate constant.
Finally it should be noted that: the foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, although the utility model is had been described in detail with reference to previous embodiment, for a person skilled in the art, its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (3)
1. along a magnetic oxygen analyzer, comprise casing, in described casing, be provided with oxygen channel, channel of nitrogen, controller, it is characterized in that:
Described oxygen channel is all connected with described controller with channel of nitrogen;
Between the outlet of described oxygen channel and entrance, be provided with successively the first ball valve, the first reduction valve, the first tensimeter, the first oxygen nitrogen mass flow controller and the first retaining valve;
Between the outlet of described channel of nitrogen and entrance, be provided with successively the second ball valve, the second reduction valve, the second tensimeter, the second oxygen nitrogen mass flow controller and the second retaining valve;
The outlet of described oxygen channel and channel of nitrogen is all connected the entrance of gas mixing drum, and the outlet of described gas mixing drum connects combustion barrel.
Described gas mixing drum is connected with along magnetic oxygen transducer.
2. according to claim 1 a kind of along magnetic oxygen analyzer, it is characterized in that: described oxygen nitrogen mass flow controller comprises oxygen nitrogen mass flow sensor and flow control electromagnetic proportional valve, described oxygen nitrogen mass flow sensor connects signal conditioning circuit module, described signal conditioning circuit module connects signal controlling algorithm circuit module, described signal controlling algorithm circuit module connects signal output driving circuit module, described signal output driving circuit module connection traffic is controlled electromagnetic proportional valve, described signal conditioning circuit module connects signal output apparatus module, described signal controlling algorithm circuit module connection control signal input circuit module.
3. a kind of along magnetic oxygen analyzer according to claim 1, it is characterized in that: described controller is programmable controller PLC and expansion module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320582376.9U CN203587531U (en) | 2013-09-18 | 2013-09-18 | Paramagnetic oxygen analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320582376.9U CN203587531U (en) | 2013-09-18 | 2013-09-18 | Paramagnetic oxygen analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203587531U true CN203587531U (en) | 2014-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320582376.9U Expired - Fee Related CN203587531U (en) | 2013-09-18 | 2013-09-18 | Paramagnetic oxygen analyzer |
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| Country | Link |
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| CN (1) | CN203587531U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106623886A (en) * | 2016-11-25 | 2017-05-10 | 上海意硕工程设备有限公司 | Continuous casting tundish stopper rod nitrogen-argon mixed blowing device |
| CN114002311A (en) * | 2021-11-03 | 2022-02-01 | 江苏舒茨测控设备股份有限公司 | Low-drift paramagnetic oxygen sensor |
| CN114354739A (en) * | 2021-12-24 | 2022-04-15 | 江苏舒茨测控设备股份有限公司 | Magnetic sound oxygen sensor |
-
2013
- 2013-09-18 CN CN201320582376.9U patent/CN203587531U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106623886A (en) * | 2016-11-25 | 2017-05-10 | 上海意硕工程设备有限公司 | Continuous casting tundish stopper rod nitrogen-argon mixed blowing device |
| CN114002311A (en) * | 2021-11-03 | 2022-02-01 | 江苏舒茨测控设备股份有限公司 | Low-drift paramagnetic oxygen sensor |
| CN114002311B (en) * | 2021-11-03 | 2022-09-13 | 江苏舒茨测控设备股份有限公司 | Low-drift paramagnetic oxygen sensor |
| CN114354739A (en) * | 2021-12-24 | 2022-04-15 | 江苏舒茨测控设备股份有限公司 | Magnetic sound oxygen sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20140507 Termination date: 20170918 |