CN103226101A - High sensitivity flame photometric detector - Google Patents
High sensitivity flame photometric detector Download PDFInfo
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- CN103226101A CN103226101A CN2012100218816A CN201210021881A CN103226101A CN 103226101 A CN103226101 A CN 103226101A CN 2012100218816 A CN2012100218816 A CN 2012100218816A CN 201210021881 A CN201210021881 A CN 201210021881A CN 103226101 A CN103226101 A CN 103226101A
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- photometric detector
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- firing chamber
- light path
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Abstract
The invention discloses a high sensitivity flame photometric detector. The high sensitivity flame photometric detector comprises a shell body, a combustion chamber inside the shell body, a combustion nozzle installed at the bottom of the combustion chamber, a light path inside the shell body and is communicated with the combustion chamber, and a gas channel communicated with the combustion nozzle, wherein the periphery of a nozzle portion of the combustion nozzle inside the combustion chamber is covered by a quartz cover, and the quartz cover situated at the position of flame is a spheroid. The high sensitivity flame photometric detector has the advantages of being high in flame light intensity and high in detection sensitivity.
Description
Technical field
The invention belongs to the detecting instrument technical field, relate to a kind of flame photometric detector (FPD).
Background technology
Flame photometric detector (FPD) is to utilize rich hydrogen flame that the organism of sulfur-bearing, phospha atom is decomposed, and forms excited state molecule, when they get back to ground state, launches the light of certain wavelength.This light intensity is directly proportional with tested component concentration.So he is the mutual relationship of a material and light is the detection method of mechanism, belong to photometry.Because of it is to excite back emission light, so it is the molecular emission detecting device in the photometry.The luminous component structure of flame photometric detector (FPD) is the core of this detecting device, and the performance of it and detecting device is closely related.
At present, the luminous intensity of the measured matter flame of flame photometric detector (FPD) is lower, and detection sensitivity is lower.Want to improve detection sensitivity, must will improve the luminous intensity of measured matter in rich hydrogen flame, promptly must reduce detecting device flame region temperature, improve detecting device mentioned nozzle area temperature.But the raising of flame-thrower nozzle regional temperature can cause the too high and then reduction detector sensitivity of detecting device bulk temperature.
Summary of the invention
For this reason, technical matters to be solved by this invention provides the high flame photometric detector (FPD) of a kind of detection sensitivity, to overcome the deficiency that prior art exists.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of high sensitivity flame photometric detector (FPD), comprise housing, firing chamber in the housing, the burner noz(zle) of being located at the bottom, firing chamber, the light path that is communicated with the firing chamber in the housing and be communicated to the gas circuit of burner noz(zle), it is characterized in that: be covered with quartz cover around the mouth of the inherent burner noz(zle) in described firing chamber, it is spheroidite that described quartz cover is positioned at flame location.
Be covered with quartz cover around the mouth by the inherent burner noz(zle) in firing chamber, and quartz cover is positioned at flame location to be designed to spherical, the quartz cover light that just measured matter flame can be sent gathers like this, thereby the raising luminous intensity helps improving the detection sensitivity of flame photometric detector (FPD).
In addition, for the light that flame can be sent emission light as much as possible is injected in the light path, a described side that is positioned at the relative light path of flame in the firing chamber is provided with the long or specific wavelength reflective membrane of all-wave.
Described reflective membrane is positioned at the inside surface or the outside surface of relative light path one side of the spheroidite of quartz cover.
In the specific embodiment of the present invention, described light path is vertical with gas circuit.
In order further to improve luminous intensity, described housing is positioned at outside the firing chamber and light path is outside equipped with heat radiator spaced apart.
By outside the firing chamber, at interval being distributed with heat radiator, also with regard to the corresponding external surface area that increases the firing chamber, thereby can improve the radiating efficiency of firing chamber, make combustion chamber temperature to distribute as early as possible, the gathering in a large number of unlikely burning indoor temperature.Even owing to can distributing of burning indoor temperature, so at this moment just can improve the luminous intensity of flame.In order further to reduce the influence of high temperature to photo-sensitive cell, being distributed with heat radiator outside light path at interval can also distribute as early as possible so that get temperature on the light path.Through verification experimental verification, detector temperature rises to 400 ℃ does not now have and can cause damage to detecting device.And luminous flame intensity height makes instrument get detection sensitivity and has obtained very big raising.
Therefore, the present invention has luminous flame intensity height, advantage that detection sensitivity is high.
Description of drawings
The present invention is described in detail below in conjunction with the drawings and specific embodiments:
Fig. 1 is a structural representation of the present invention;
Fig. 2 is an exterior perspective view of the present invention.
Among the figure:
The 100-housing, 101-pedestal, 1011-cavity, 102-base, 1021-first intake interface, 1022-second intake interface, 103-lid, 104-light path seat, the 200-firing chamber, 301-throttling pore, 302-carrier gas joint, 3021-carrier gas passage, the 303-tracheae, 3031-gap, 400-burner noz(zle), 401-inner nozzle, the 402-outer nozzle, 403-sleeve, 404-back-up ring, 500-heat radiator, the 600-quartz cover, 601-spheroidite, 602-reflective membrane.
Embodiment
As shown in Figure 1, novel flame photometric detection of the present invention comprises housing 100.Housing 100 is made of pedestal 101, base 102, lid 103, light path seat 104.
Wherein pedestal 101 is a cylindrical structure, has cavity 1011 in it.Pedestal one end is by base 102 shutoff, and the other end is by lid 103 shutoff.Have a throttling pore 301 in the lid 103, throttling pore 301 outsides connect carrier gas joint 302, have the carrier gas passage 3021 of aperture greater than throttling pore 301 in the carrier gas joint 302; One of inboard connection is deep into the tracheae 303 in pedestal 101 cavitys 1011, and the internal orifice dimension of tracheae 303 is consistent with throttling pore 301.Inner nozzle 401 of socket on tracheae 303 terminations also is with an outer nozzle 402 outside the inner nozzle 401, has between the mouth of the mouth of inner nozzle 401 and outer nozzle 402 at interval.The root of outer nozzle 402 extends to base 102 always and is located at cavity interior 1011 interior sleeves 403 and fixes.Periphery at outer nozzle 402 is provided with back-up ring 404.Inner nozzle 401 and outer nozzle 402 have formed burner noz(zle) 400 of the present invention.Inner nozzle 401 is used for the outflow of combustion gas and carrier gas and measured matter, and outer nozzle 402 is used for the outflow of combustion-supporting gas air.The space that is positioned at the burner noz(zle) outside in the cavity 1011 forms firing chamber 200.Carrier gas joint 302, pore 301 and tracheae 303 have formed gas circuit.
On base 102, be positioned at throttling pore both sides and have first intake interface 1021 and second intake interface 1022 respectively.First detects gas interface 1021 is communicated in the carrier gas passage 3021 in throttling pore 301 outsides.Tracheae 303 outside surfaces have gap 3031, and gap 3031 is communicated to the interval between the mouth of the mouth of inner nozzle 401 and outer nozzle 402, and second intake interface 1022 is communicated to gap 3031.First intake interface 1021 is the gas circuit of delivery of fuel gas hydrogen, and second intake interface 1022 is for carrying the gas circuit of combustion-supporting gas air.
Be covered with quartz cover 600 around the mouth of firing chamber 200 inherent burner noz(zle)s 400, it is spheroidite 6001 that quartz cover 600 is positioned at flame location.
Be covered with quartz cover 600 around the mouth by firing chamber 200 inherent burner noz(zle)s 400, and quartz cover 600 is positioned at flame location to be designed to spherical, the quartz cover light that just flame can be sent gathers like this, thereby raising luminous intensity, the light intensity that enters light path like this helps improving the detection sensitivity of flame photometric detector (FPD) just than higher.
For the light that flame can be sent is injected in the light path as far as possible, also spray the reflective membrane 602 of the long or specific wavelength of all-wave at the outside surface of the side (a promptly opposite side) of spheroidite 601 relative light paths with light path.
In addition, the pedestal 102 outside surfaces location interval that is positioned at firing chamber 200 is distributed with the heat radiator 500 of ring-type.The heat radiator 500 of rectangle also is installed on light path seat 104 at interval.
By outside the firing chamber, at interval being distributed with heat radiator, also with regard to the corresponding external surface area that increases the firing chamber, thereby can improve the radiating efficiency of firing chamber, make combustion chamber temperature to distribute as early as possible, the gathering in a large number of unlikely burning indoor temperature.Because burning can in time the distributing of indoor temperature reduced the flame region temperature, so luminous intensity that just can corresponding raising flame.In order further to reduce the influence of high temperature to photo-sensitive cell, outside light path, be distributed with at interval heat radiator can so that the temperature of light path pipe also distribute as early as possible.Through evidence, detector temperature rises to 400 ℃ and also can not cause damage to detecting device now.Luminous flame intensity height makes the detection sensitivity of instrument obtain very big raising.
Therefore, the present invention has luminous flame intensity height, the high advantage that gets of detection sensitivity.
But, those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop in claims scope of the present invention variation, the modification of the above embodiment.
Claims (6)
1. highly sensitive flame photometric detector (FPD), comprise housing, firing chamber in the housing, the burner noz(zle) of being located at the bottom, firing chamber, the light path that is communicated with the firing chamber in the housing and be communicated to the gas circuit of burner noz(zle), it is characterized in that: be covered with quartz cover around the mouth of the inherent burner noz(zle) in described firing chamber, it is spheroidite that described quartz cover is positioned at flame location.
2. highly sensitive flame photometric detector (FPD) according to claim 1 is characterized in that: a described side that is positioned at the relative light path of flame in the firing chamber is provided with reflective membrane.
3. highly sensitive flame photometric detector (FPD) according to claim 2 is characterized in that: described reflective membrane is positioned at the inside surface or the outside surface of relative light path one side of the spheroidite of quartz cover.
4. highly sensitive flame photometric detector (FPD) according to claim 3 is characterized in that: described light path is vertical with gas circuit.
5. according to the described highly sensitive flame photometric detector (FPD) of the arbitrary claim of claim 1-4, it is characterized in that: described housing is positioned at the firing chamber and is outside equipped with heat radiator spaced apart.
6. highly sensitive flame photometric detector (FPD) according to claim 5 is characterized in that: described housing is positioned at light path heat radiator spaced apart also is set outward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100218816A CN103226101A (en) | 2012-01-31 | 2012-01-31 | High sensitivity flame photometric detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100218816A CN103226101A (en) | 2012-01-31 | 2012-01-31 | High sensitivity flame photometric detector |
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| Publication Number | Publication Date |
|---|---|
| CN103226101A true CN103226101A (en) | 2013-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012100218816A Pending CN103226101A (en) | 2012-01-31 | 2012-01-31 | High sensitivity flame photometric detector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111220747A (en) * | 2018-11-27 | 2020-06-02 | 中国科学院大连化学物理研究所 | Sulfur response signal enhancement assembly of flame photometric detector and application thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4939376A (en) * | 1989-04-14 | 1990-07-03 | The United States Of America As Represented By The United States Department Of Energy | Light collection device for flame emission detectors |
| JPH05322769A (en) * | 1992-05-19 | 1993-12-07 | Hitachi Ltd | Flame photometric detector for gas chromatography |
| JPH11237340A (en) * | 1998-02-20 | 1999-08-31 | Shimadzu Corp | Flame photometric detector |
| CN101144801A (en) * | 2007-08-23 | 2008-03-19 | 刘春生 | Gas chromatography double-flame photometric detector |
| CN202599843U (en) * | 2012-01-31 | 2012-12-12 | 上海天美科学仪器有限公司 | High sensitivity flame photometric detector |
-
2012
- 2012-01-31 CN CN2012100218816A patent/CN103226101A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4939376A (en) * | 1989-04-14 | 1990-07-03 | The United States Of America As Represented By The United States Department Of Energy | Light collection device for flame emission detectors |
| JPH05322769A (en) * | 1992-05-19 | 1993-12-07 | Hitachi Ltd | Flame photometric detector for gas chromatography |
| JPH11237340A (en) * | 1998-02-20 | 1999-08-31 | Shimadzu Corp | Flame photometric detector |
| CN101144801A (en) * | 2007-08-23 | 2008-03-19 | 刘春生 | Gas chromatography double-flame photometric detector |
| CN202599843U (en) * | 2012-01-31 | 2012-12-12 | 上海天美科学仪器有限公司 | High sensitivity flame photometric detector |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111220747A (en) * | 2018-11-27 | 2020-06-02 | 中国科学院大连化学物理研究所 | Sulfur response signal enhancement assembly of flame photometric detector and application thereof |
| CN111220747B (en) * | 2018-11-27 | 2022-03-15 | 中国科学院大连化学物理研究所 | Sulfur response signal enhancement assembly of flame photometric detector and application thereof |
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Application publication date: 20130731 |