CN2120330U - Low-temp. in-situ laser raman spectrum sample cell - Google Patents
Low-temp. in-situ laser raman spectrum sample cell Download PDFInfo
- Publication number
- CN2120330U CN2120330U CN 92207874 CN92207874U CN2120330U CN 2120330 U CN2120330 U CN 2120330U CN 92207874 CN92207874 CN 92207874 CN 92207874 U CN92207874 U CN 92207874U CN 2120330 U CN2120330 U CN 2120330U
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- sample
- laser raman
- raman spectrum
- sample cell
- low temperature
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Abstract
The utility model discloses a sample cell for insitu laser Raman spectrum with low temperature, relating to a component of a laser Raman spectrum device. The utility model can be used for testing insitu spectrum with the low temperature and can be matched with a laser Raman spectrograph to process the spectroscopic study under reaction conditions. The sample cell for the insitu laser Raman spectrum with the low temperature is mainly composed of a quartz tube with a vacuum jacket, an electrothermal element, a sample heating mantle, a thermocouple, a metal coat with a light passing hole, an upper end cap, a base, a soleplate, an O type sealing ring, a pressure ring, binding screws, etc. The utility model is suitable for the special requirement of the use in the low temperature. Temperature can be continuously adjusted by beginning from the temperature of liquid nitrogen (or dry ice), and precision is about 1DEG. C.
Description
The utility model relates to a kind of parts of laser Raman spectrum device.
The design people proposes a kind of boiling type in situ laser Raman spectrum specimen pool in the CN91105112.0 patented claim, it comprises sample hose, microporosity separator, heating, thermopair and has the parts such as metal cap of light hole, and, constitute a complete airtight current system by O-ring seal, pressure ring, fastening nut and pedestal connection.This sample cell can not only reduce the decomposition destruction to sample and attachment thereof of the heat, luminous effect of laser beam to greatest extent, and can improve the detection sensitivity of laser Raman spectrum significantly.But it can not be worked under low-temperature condition, and at this moment the sample hose outer wall will be enclosed water membrane thereby overslaugh spectrum test.
The purpose of this utility model aims to provide a kind of improved, is applicable to the sample cell of low-temperature in-site laser Raman spectrum test; The backreflection annex of it and Raman spectrometer is used.
The utility model comprises the parts such as metal-coating of sample hose, heating, thermopair, band light hole, and by O-ring seal, pressure ring, tighten up screw and be connected with upper end cap and pedestal.Said sample hose adopts the quartz ampoule of band vacuum jacket.The sample heating mantles is established at the middle part in addition in quartz ampoule, and there is the thermocouple hole of placing thermopair on its top, and there is a sample disc of placing sample the side.Quartz ampoule is fixed by upper end cap and pedestal, and adds a metallic sheath that has a light hole between upper end cap and pedestal.Heating and thermopair place the two ends of quartz ampoule respectively.
Because the utility model uses the quartz ampoule of band vacuum jacket to replace common column type hollow specimen pipe, layer vacuum about 10
-5Pa, so just reduced the heat interchange of sample heating mantles and surrounding environment to greatest extent, when under liquid nitrogen temperature, using, the unlikely moisture film of enclosing of the outer wall of quartz ampoule light transmission part, thereby can the overslaugh spectrum test, can be used with the backreflection annex of Raman spectrometer.
Accompanying drawing is the structural drawing of low-temperature in-site laser Raman spectrum specimen pool.
Embodiment: as shown in the figure, sample cell comprises quartz ampoule (2), heating (11), the thermopair (8) of being with region of no pressure (4) chuck (3), the metallic sheath parts such as (1) of being with light hole (5).Sample heating mantles (6) has a placement thermopair on the top of sample heating mantles thermocouple hole (18) is established at the middle part in addition in quartz ampoule, and there is a sample disc (7) of placing sample the side.The two ends of quartz ampoule are by O RunddichtringO (14), pressure ring (13) and tighten up screw (12) and upper end cap (10) and pedestal (16) is fixed, and form a closed system.Carrier gas imports from draft tube (15), is drawn by efferent duct (9).The whole sample pond places on the base (17).
The flow process of said apparatus is: sample places sample disc, and unstripped gas then imports from air intake opening.The effect of heating is that sample temperature can be begun continuously from liquid nitrogen (or dry ice) temperature is adjustable, precision ± 1 ℃.Temperature is controlled by thermocouple measurement and by temperature controller.The low temperature source of the gas can adopt steel cylinder nitrogen or inert gas by placing the brass coiled pipe in liquid nitrogen (or dry ice) cold-trap, introduces from air intake opening again.
Quartz ampoule useable glass or other spectrum transparent materials of band vacuum jacket substitute.
Claims (3)
1, a kind of low-temperature in-site laser Raman spectrum specimen pool, the metal-coating that comprises sample hose, heating, thermopair, band light hole, and by O-ring seal, pressure ring, tighten up screw and be connected with upper end cap and pedestal, it is characterized in that said sample hose adopts the quartz ampoule of band vacuum jacket, the sample heating mantles is established at the middle part in quartz ampoule, there is the thermocouple hole of putting the cover thermopair on the top of heating mantles, and there is a sample disc of placing sample the side.
2, sample cell as claimed in claim 1 is characterized in that heating and thermopair place the two ends of quartz ampoule respectively.
3, sample cell as claimed in claim 1 is characterized in that replacing with quartz ampoule useable glass or other spectrum transparent materials of vacuum jacket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92207874 CN2120330U (en) | 1992-04-19 | 1992-04-19 | Low-temp. in-situ laser raman spectrum sample cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92207874 CN2120330U (en) | 1992-04-19 | 1992-04-19 | Low-temp. in-situ laser raman spectrum sample cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2120330U true CN2120330U (en) | 1992-10-28 |
Family
ID=4953497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92207874 Granted CN2120330U (en) | 1992-04-19 | 1992-04-19 | Low-temp. in-situ laser raman spectrum sample cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2120330U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100373151C (en) * | 2005-01-13 | 2008-03-05 | 上海众毅工业控制技术有限公司 | Laser Raman sample pool for gas analysis |
| CN102426164A (en) * | 2011-08-22 | 2012-04-25 | 东南大学 | Method for collecting and detecting material decomposition product or material transformation product under strong laser irradiation |
| CN108375491A (en) * | 2018-01-23 | 2018-08-07 | 中国石油天然气股份有限公司 | Micro- visual fluid mothballed plant and assay method |
| CN110031444A (en) * | 2019-04-22 | 2019-07-19 | 金华职业技术学院 | A kind of method for measuring Raman spectrum under cryogenic conditions |
| CN111272654A (en) * | 2018-12-04 | 2020-06-12 | 中国科学院大连化学物理研究所 | Low-temperature to high-temperature controllable-temperature infrared in-situ reaction tank based on high vacuum condition |
-
1992
- 1992-04-19 CN CN 92207874 patent/CN2120330U/en active Granted
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100373151C (en) * | 2005-01-13 | 2008-03-05 | 上海众毅工业控制技术有限公司 | Laser Raman sample pool for gas analysis |
| CN102426164A (en) * | 2011-08-22 | 2012-04-25 | 东南大学 | Method for collecting and detecting material decomposition product or material transformation product under strong laser irradiation |
| CN108375491A (en) * | 2018-01-23 | 2018-08-07 | 中国石油天然气股份有限公司 | Micro- visual fluid mothballed plant and assay method |
| CN111272654A (en) * | 2018-12-04 | 2020-06-12 | 中国科学院大连化学物理研究所 | Low-temperature to high-temperature controllable-temperature infrared in-situ reaction tank based on high vacuum condition |
| CN111272654B (en) * | 2018-12-04 | 2021-02-26 | 中国科学院大连化学物理研究所 | Low-temperature to high-temperature controllable-temperature infrared in-situ reaction tank based on high vacuum condition |
| CN110031444A (en) * | 2019-04-22 | 2019-07-19 | 金华职业技术学院 | A kind of method for measuring Raman spectrum under cryogenic conditions |
| CN110031444B (en) * | 2019-04-22 | 2023-08-15 | 金华职业技术学院 | Raman spectrum measuring method under low temperature condition |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |