CN205426778U - Flame atomic absorption spectrophotometer - Google Patents
Flame atomic absorption spectrophotometer Download PDFInfo
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- CN205426778U CN205426778U CN201520975879.1U CN201520975879U CN205426778U CN 205426778 U CN205426778 U CN 205426778U CN 201520975879 U CN201520975879 U CN 201520975879U CN 205426778 U CN205426778 U CN 205426778U
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- flame
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Abstract
The utility model provides a definite the atomic absorption spectrophotometer that midway extinguishes of perception flame. It constitutes for including: sample mixing section (16), it will survey sample atomizing and the leading -in gas of supplying with and combustion -supporting gas with the adjustment mixed sample, combustion section (2), it lights gas and combustion -supporting gas in the mixed sample in order to form flame, light source (8), its to by flame (5) atomization the survey sample survey light jets out, survey optical detection sensor (13), its luminous intensity to surveing light detects, and survey portion (41), the absorbance is calculated out to its light intensity meter based on survey light. Atomic absorption spectrophotometer includes: flame optical detection sensor (14), its luminous intensity to the flame that follow flame (5) jetted out detects, environment optical detection sensor (15), its luminous intensity to environment light detects, and flame supervision portion (42), its luminous intensity based on flame light judges whether form flame (5) with the luminous intensity of environment light.
Description
Technical field
This utility model relates to a kind of flame atomic absorption spectrophotometer.Relate to the flame atomic absorption spectrophotometer that a kind of absorbance to utilizing flame and atomizing mensuration sample is measured in more detail.
Background technology
Flame atomic absorption spectrophotometer, by the mensuration sample of liquid is atomized and is imported in flame, will measure sample atomization, thus measure the light intensity measuring light through atomizing mensuration sample.Now, measure light from light source to the injection of atomizing mensuration sample, detect through the light intensity measuring light measuring sample by measuring light detecting sensors.
This flame atomic absorption spectrophotometer will measure the atomizing flame of sample owing to being formed, it is therefore desirable to burner (combustion section) supply air (combustion-supporting gas) and acetylene gas (combustion gas).Again by lighting the mixed gas of supplied air and acetylene gas, above burner head, form flame.
Also, flame atomic absorption spectrophotometer has the optical transistor (flame light detecting sensors) (referring for example to patent documentation 1) that perception flame midway is extinguished.As the example constituted, to arrange the optical transistor of detection flame light light intensity in the way of being formed at the flame on burner head, by the emitter terminal ground connection of this optical transistor, and load resistance is utilized to pull up (pull-up) collector terminal.Thus, in the case of forming flame, electric current circulates (optical transistor ON) in optical transistor, and collector terminal becomes the degree of " L " level (low level).On the other hand, in the case of not forming flame, electric current does not circulates (optical transistor OFF) in optical transistor, and collector terminal becomes the degree of " H " level (high level).Therefore, by the reference potential T by the current potential of collector terminal Yu setting1But (H < T1< L) compare, it is determined that the presence or absence of flame.That is, by utilizing the light intensity of flame light that optical transistor detects, during perception Specimen Determination, the midway of flame is extinguished.
Further, it is also known that a kind of flame atomic absorption spectrophotometer, have: the flame light detecting sensors configured near the position of the flame being formed on burner head；And when flame light intensity A is less than threshold value T1Time be judged to not form flame, when flame light intensity is in threshold value T1It is judged to be formed the flame monitoring portion (referring for example to patent documentation 2) of flame time above.Thus, after igniting, flame light intensity A becomes less than threshold value T1Time, it is determined that occur midway to extinguish for flame, thus stop supplying acetylene gas.
But, flame atomic absorption spectrophotometer incides above burner head due to ambient light, regardless of whether form flame, flame light intensity A that flame light detecting sensors is detected could possibly be higher than threshold value T1(with reference to (b) of Fig. 3).
Therefore, the light intensity produced by the ambient light detected by flame light detecting sensors is confirmed before igniting, when this ambient light intensity is in threshold value T1Time above, by being not into " ignition procedure ", prevent from detecting the generation of the state of affairs that flame midway is extinguished.
Prior art literature
Patent documentation
Patent documentation 1: Japanese Patent Laid-Open 11-23453 publication
Patent documentation 2: Japanese Patent Laid-Open 2009-281770 publication
Utility model content
The problem that utility model is to be solved
But, when using atomic absorption spectrophotometer as described above, flame light intensity A that flame light detecting sensors is detected before ignition is even below threshold value T1(with reference to (a) of Fig. 2), during igniting, the light quantity of ambient light increases, when the light intensity of only ambient light is just in threshold value T1In the case of above (sun tilts and direct sunlight is irradiated in device (combustor) etc.), even if occurring the midway of flame to extinguish, flame light intensity A detected by flame light detecting sensors is in threshold value T1Above, user cannot perception flame midway extinguish, there is the problem that acetylene gas continues to flow out.(with reference to (b) of Fig. 3).
Means for solving the above
The present utility model person for solve the problems referred to above, to can definitely perception flame midway extinguish method discussed.In the case of carrying out perception ambient light merely with flame light detecting sensors as in the past, owing to during igniting, flame light intensity accounts for leading and the power of ambient light is failed to understand, and flame light intensity also changes because of the difference of test sample, the most more difficulty.Consequently found that following methods: at the position not observing flame, environment light detecting sensors is additionally set in addition to flame light detecting sensors, based on flame light intensity A detected by flame light detecting sensors and ambient light B detected by environment light detecting sensors, it is determined that whether form flame on burner head.
That is, flame atomic absorption spectrophotometer of the present utility model has: fuel gas supply portion, the supply combustion gas of described fuel gas supply portion；Combustion-supporting gas supply unit, described combustion-supporting gas supply unit supplies combustion-supporting gas；Sample mixed portion, described sample mixed portion, by being atomized measuring sample and import in supplied combustion gas and combustion-supporting gas, adjusts composite sample；Combustion section, described combustion section lights the combustion gas in described composite sample and combustion-supporting gas to form flame；Light source, described light source measures light to the mensuration sample injection by described flame atomization；Measuring light detecting sensors, described mensuration light detecting sensors detects having passed through the light intensity that described mensuration sample measures light；And determination part, described determination part light intensity meter based on described mensuration light calculates the absorbance of described mensuration sample, described flame atomic absorption spectrophotometer has: flame light detecting sensors, and the light intensity of the described flame light detecting sensors flame light to penetrating from described flame detects；Environment light detecting sensors, the flame light penetrated from described flame is not detected by described environment light detecting sensors, and detects the light intensity of ambient light；And the light intensity of flame monitoring portion, described flame monitoring portion light intensity based on flame light and ambient light, it is determined whether form flame.
Utility model effect
According to the atomic absorption spectrophotometer involved by this utility model, when around brightening during lighting, environment light detecting sensors is judged to the midway of perception flame " cannot extinguish ", and flame monitoring portion is by automatically digesting or prompting the user with precarious position, it can be ensured that the safety of user.
(other means for solving the above and effect)
Again, atom of the present utility model display spectrophotometer can also work as the light intensity of described flame light more than first threshold and described ambient light light intensity less than Second Threshold time, described flame monitoring portion is judged to form flame, on the other hand, when the light intensity of described flame light less than the light intensity of first threshold or described ambient light more than Second Threshold time, described flame monitoring portion it is determined that the probability not forming flame.
Here, " first threshold " refers to, designer or user etc. the light intensity being used for utilizing flame light detecting sensors to determine whether to be formed flame set.
Also, " Second Threshold " refers to, whether it is incident in the light intensity of flame light detecting sensors for being determined to be the superfluous ambient light judged with presence or absence of interference flame.Due to the position of flame light detecting sensors and the position of environment light detecting sensors from, designer or user etc. are preferably considering that flame light detecting sensors suitably determines after the position relationship of environment light detecting sensors.
Accompanying drawing explanation
Fig. 1 is the schematic configuration diagram of the example illustrating the flame atomic absorption spectrophotometer involved by this utility model.
Fig. 2 is the explanatory diagram less Light intensity of ambient light intensity being described with the relation of threshold value, wherein, (a) of Fig. 2 is the explanatory diagram prefiring light intensity being described with the relation of threshold value, (b) of Fig. 2 is explanatory diagram normal ignition Light intensity being described with the relation of threshold value, and (c) of Fig. 2 is that the explanatory diagram that Light intensity and the relation of threshold value are extinguished in midway is described.
Fig. 3 is the explanatory diagram bigger Light intensity of ambient light intensity being described with the relation of threshold value, wherein (a) of Fig. 3 is explanatory diagram normal ignition Light intensity being described with the relation of threshold value, and (b) of Fig. 3 is that the explanatory diagram that Light intensity and the relation of threshold value are extinguished in midway is described.
Detailed description of the invention
Hereinafter, referring to the drawings embodiment of the present utility model is illustrated.It addition, this utility model is not limited to embodiment as described below, undoubtedly comprise the various embodiments in the range of without departing from purport of the present utility model.
Fig. 1 is the schematic configuration diagram of an example of the flame atomic absorption spectrophotometer being shown as embodiment of the present utility model.Also, Fig. 2 and Fig. 3 is the explanatory diagram of the relation illustrating ambient light intensity and threshold value, Fig. 2 illustrate ambient light intensity, hour, Fig. 3 illustrates when ambient light intensity is big.
Flame atomic absorption spectrophotometer 1 has: burner (combustion section) 2, and described burner (combustion section) 2 forms flame 5；Combustion-supporting gas supply unit 12, described combustion-supporting burning supply unit 12 supply air；Fuel gas supply portion 11, described fuel gas supply portion 11 supplies acetylene gas；Light source 8, the injection of described light source 8 measures light；Measuring light detecting sensors 13, described mensuration light detecting sensors 13 detects the light intensity measuring light；Flame light detecting sensors 14, described flame light detecting sensors 14 detects flame light intensity A；Environment light detecting sensors 15, described environment light detecting sensors 15 detects light intensity B of ambient light；Flame chamber (sample mixed portion) 16, described flame chamber (sample mixed portion) 16 adjusts composite sample by being atomized and import mensuration sample；Combustor 17；And control portion 20, described control portion 20 is made up of computer.
Combustion-supporting gas supply unit 11 has: the electromagnetic valve 11a of switch air supply pipe 31, and adjusts the both air flow modulation portion 11b of air mass flow.And, combustion-supporting gas supply unit 11, with flow based on the control signal sent by control portion 20, supplies air to flame chamber 16.
Fuel gas supply portion 12 has: the electromagnetic valve 12a of switch gas supply pipe 32, and adjusts the gas flow regulation portion 12b of acetylene flow.And, fuel gas supply portion 12, with flow based on the control signal sent by control portion 20, supplies acetylene gas to flame chamber 16.
Flame chamber 16 has: aerosol apparatus 3, and sample suction tube 4.Thus, after mensuration sample is imported aerosol apparatus 3 by user by sample suction tube 5, the mensuration sample becoming vaporific is admitted to burner 2 with acetylene gas and air after flame chamber 16 is mixed.During it addition, mensuration sample is not imported into aerosol apparatus 3, only acetylene gas is admitted to burner 2 with air after flame chamber 16 is mixed.During it is to say, mensuration sample is not imported into, the mixed gas not containing mensuration sample is admitted to burner 2.
The mixed gas supplied by flame chamber 16 is released from the elongated gap of burner head by burner 2, based on the control signal sent by control portion 20, lights mixed gas to form flame 5 on burner head, or extinguishes established flame 5.Therefore, in the case of forming flame 5 when being supplied the composite sample containing mensuration sample by flame chamber 16, the mensuration sample in composite sample is become atom vapor by flame 5 atomization.
Measure light detecting sensors 13 to configure to ground with light source 8, beam splitter (not shown) is utilized to will transmit through by the mensuration light light splitting of flame 5 atomizing mensuration sample, detect the mensuration light intensity after light splitting, and would indicate that the detection signal output measuring light intensity is to the determination part 41 in control portion 20 described later.
Flame light detecting sensors 14 be configured in not with light source 8 to and optical transistor near the position being formed at flame 5 on burner head.By the emitter terminal ground connection of this optical transistor, and load resistance is utilized to pull up collector terminal.Thus, flame light detecting sensors 14 detects flame light intensity A penetrated by flame 5, and would indicate that the detection signal of flame light intensity A exports to control portion 20.
Environment light detecting sensors 15 as flame light detecting sensors 14, be configured in not with light source 8 to and optical transistor near the position being formed at flame 5 on burner head.By the emitter terminal ground connection of this optical transistor, and load resistance is utilized to pull up collector terminal.Thus, environment light detecting sensors 14 is not the ambient light intensity B that the flame light that penetrated by flame 5 of detection and only detecting has been injected in combustor 15, will illustrate that the detection signal of ambient light intensity B exports to control portion 20.
Control portion 20 has the CPU21 carrying out various control and calculation process, further, connects and has input equipment 22, display device 23 and memorizer 24.Also, the process performed by CPU21 is divided into each functional module illustrate then have: calculate the determination part 41 of the absorbance measuring sample, and judge the flame monitoring portion 42 whether flame 5 is formed.Further, memorizer 21 prestores first threshold T for judging flame light intensity A that whether flame 5 formed1Second Threshold T with the light intensity of ambient light intensity B2。
Determination part 41 measures based on the expression sent by input equipment 22 etc./measure complete operation signal, control signal is exported respectively to burner 2, light source 8, combustion-supporting feeder 11 and fuel gas supply portion 12, afterwards, based on by measuring the detection signal that light detecting sensors 13 sends, carry out calculating the control of the absorbance by flame 5 atomizing mensuration sample.
Such as, when receiving the operation signal the expression mensuration sent by input equipment 22 etc., the detection signal sent by flame light detecting sensors 14 is received.And, when being judged to that flame light intensity A is less than first threshold T1Time, enter " ignition procedure ", controlling combustion-supporting gas supply unit 11 makes air mass flow adjust to 15.0L/min (for measuring the setting flow of beginning), and control fuel gas supply portion 12 makes acetylene gas flow adjust to 2.0L/min (for measuring the setting flow of beginning) (with reference to (a) of Fig. 2).And, burner 2 is lighted the control of air and the mixed gas of acetylene gas, and controls light source 8 with injection mensuration light.Afterwards, receive by measuring the detection signal that light detecting sensors 13 sends, calculate by the absorbance of flame 5 atomizing mensuration sample.
Again, when receiving the expression sent by input equipment 22 etc. and measuring complete operation signal, controlling combustion-supporting gas supply unit 11 makes air mass flow adjust while 0.0L/min (for measuring complete setting flow), controls fuel gas supply portion 12 and makes acetylene gas flow adjust to 0.0L/min (for measuring complete setting flow).And, control burner 2 is with knock down the flame 5, and the light source 8 controlled measures light to stop injection.
Flame portion monitoring unit 42, when entering " ignition procedure ", respectively detects signal based on sent by flame light detecting sensors 14 and environment light detecting sensors 15, is made to determine whether to be formed the control of flame 5.
Such as, when receive by flame light detecting sensors 14 send " flame light intensity A be less than first threshold T1" detection signal time, it is determined that do not form flame and (with reference to (c) of Fig. 2, show the miscue information of " flame extinguishes " in display device 23.And, control combustion-supporting gas supply unit 11 and make air mass flow adjust to 0.0L/min, and control fuel gas supply portion 12 makes the flow of acetylene gas adjust to 0.0L/min.
Also, when receive by environment light detecting sensors 15 send " ambient light intensity B is at Second Threshold T2During above " detection signal, it is determined that there is the probability (with reference to Fig. 3) not forming flame, show the miscue information of " there is the extinct probability of flame " in display device 23.Confirm the user of this miscue information, it is appreciated that the sun tilts and direct sunlight is irradiated to combustor 17, and the countermeasure of the shutter of window of taking to leave behind.
On the other hand, when flame light intensity A, more than first threshold and ambient light intensity B is less than Second Threshold T2Time, it is determined that normally form flame 5 (with reference to (b) of Fig. 2), in display device 23 not display reminding information.
As above, according to flame atomic absorption spectrophotometer 1 of the present utility model, when lighting period, when around brightening, judge environment light detecting sensors 15 become cannot the state extinguished of the midway of perception flame 5, its danger is prompted to user by flame monitoring portion 42, it may thereby be ensured that the safety of user.Itself as a result, it is possible to definitely perception flame 5 as shown by (c) of Fig. 2 and (b) of Fig. 2 midway extinguish.
Other embodiment
(1) when using above-mentioned flame atomic absorption spectrophotometer 1, when ambient light intensity B is at Second Threshold T2Time above, it is shown that miscue information is shown in display device 23 to notify the composition of user.Replace, it is also possible to take, as automatically controlled combustion-supporting gas supply unit 11 and fuel gas supply portion 12, to stop air and constitute as the supply of acetylene gas.
(2) in above-mentioned flame atomic absorption spectrophotometer 11, take and prestore first threshold T at memorizer 241With Second Threshold T2Composition, it is also possible to take as set first threshold T by user to measuring every time1With Second Threshold T2Composition.
Industrial applicability
This utility model may be used for the flame atomic absorption spectrophotometer being measured the absorbance utilizing flame and atomizing mensuration sample.
The explanation of symbol
1 flame atomic absorption spectrophotometer
2 burners (combustion section)
5 flames
8 light sources
11 combustion-supporting gas supply units
12 fuel gas supply portions
13 measure light detecting sensors
14 flame light detecting sensors
15 environment light detecting sensors
16 flame chambers (sample mixed portion)
41 determination parts
42 flame monitoring portions.
Claims (2)
1. a flame atomic absorption spectrophotometer, it has:
Fuel gas supply portion, the supply combustion gas of described fuel gas supply portion；
Combustion-supporting gas supply unit, described combustion-supporting gas supply unit supplies combustion-supporting gas；
Sample mixed portion, described sample mixed portion, by being atomized measuring sample and import in supplied combustion gas and combustion-supporting gas, adjusts composite sample；
Combustion section, described combustion section lights the combustion gas in described composite sample and combustion-supporting gas to form flame；
Light source, described light source measures light to the mensuration sample injection by described flame atomization；
Measuring light detecting sensors, described mensuration light detecting sensors detects having passed through the light intensity that described mensuration sample measures light；And
Determination part, described determination part light intensity meter based on described mensuration light calculates the absorbance of described mensuration sample,
Described flame atomic absorption spectrophotometer is characterised by having:
Flame light detecting sensors, the light intensity of the described flame light detecting sensors flame light to penetrating from described flame detects；
Environment light detecting sensors, the flame light penetrated from described flame is not detected by described environment light detecting sensors, and detects the light intensity of ambient light；And
The light intensity of flame monitoring portion, described flame monitoring portion light intensity based on flame light and ambient light, it is determined whether form flame.
Flame atomic absorption spectrophotometer the most according to claim 1, it is characterised in that
When the light intensity of described flame light more than first threshold and the light intensity of described ambient light less than Second Threshold time, described flame monitoring portion is judged to form flame,
On the other hand, when the light intensity of described flame light less than the light intensity of first threshold or described ambient light more than Second Threshold time, described flame monitoring portion it is determined that the probability not forming flame.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-004845 | 2015-09-25 | ||
| JP2015004845U JP3201420U (en) | 2015-09-25 | 2015-09-25 | Flame atomic absorption photometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205426778U true CN205426778U (en) | 2016-08-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520975879.1U Expired - Fee Related CN205426778U (en) | 2015-09-25 | 2015-11-30 | Flame atomic absorption spectrophotometer |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3201420U (en) |
| CN (1) | CN205426778U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110832303A (en) * | 2017-07-10 | 2020-02-21 | 株式会社岛津制作所 | Flame atomic absorption spectrophotometer |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112179857A (en) * | 2020-09-22 | 2021-01-05 | 杭州启绿科技有限公司 | Atomic absorption spectrometer and energy compensation method |
-
2015
- 2015-09-25 JP JP2015004845U patent/JP3201420U/en active Active
- 2015-11-30 CN CN201520975879.1U patent/CN205426778U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110832303A (en) * | 2017-07-10 | 2020-02-21 | 株式会社岛津制作所 | Flame atomic absorption spectrophotometer |
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| Publication number | Publication date |
|---|---|
| JP3201420U (en) | 2015-12-10 |
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Legal Events
| 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 |
Granted publication date: 20160803 Termination date: 20211130 |
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| CF01 | Termination of patent right due to non-payment of annual fee |