CN206862872U - Sample cell - Google Patents
Sample cell Download PDFInfo
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- CN206862872U CN206862872U CN201720795541.7U CN201720795541U CN206862872U CN 206862872 U CN206862872 U CN 206862872U CN 201720795541 U CN201720795541 U CN 201720795541U CN 206862872 U CN206862872 U CN 206862872U
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- window
- sample
- sample cell
- distance piece
- upper lid
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Abstract
A kind of sample cell is the utility model is related to, prior art is mainly solved and the problem of measurement process is cumbersome, and measurement efficiency is low be present.The utility model is by using including pond body, Shang Gai, upper window, lower window, rubber blanket, packing ring and distance piece；The pond body is that a cylinder is connected on cuboid, and rubber blanket, lower window, distance piece, upper window, packing ring are sequentially placed above cylinder；Cylinder outer wall has external screw thread, is connected through a screw thread with upper lid, preferably solves the problem with the technical scheme that this forms the thin-layer sample chamber that can accommodate testing sample between upper and lower window.The utility model assembling is simple, easy to use, it is possible to achieve continuous several times measure, and improve detection efficiency.
Description
Technical field
It the utility model is related to a kind of sample cell, more particularly to a kind of sample cell for fluid infrared spectrum analysis.
Background technology
Infrared spectrum is one of material chemical structure analysis and authentication method of classics, is widely used in current various scientific researches
And production field.On the one hand, infrared spectrum can provide the chemical structure information for the molecule functional group that material is included, infrared light
Absworption peak in spectrum, correspond respectively to the absorption of some in molecule or some groups；On the other hand, the different material of chemical constitution
With different infrared spectrums, thus the infrared spectrum of material has fingerprint characteristic.Material is after infra-red radiation irradiates, because dividing
The infra-red radiation of sub-resonance Absorption Characteristics wavelength, form the infrared absorption spectroscopy with the structure of matter and composition characteristic.From sample
Infrared spectrogram on, the general type of unknown mixture can be inferred according to the location and shape of absworption peak, according to feature
The intensity of absworption peak determines the content of certain component in mixture.
Infrared spectrum analysis is an important means of oil liquid monitoring.Have using infrared spectrum technology to analyze in lubricating oil
The unit structure of machine compound, the type of base oil can be differentiated, the refined degree of base oil is judged；Pass through
New and old oily infrared absorption, can monitor base oil and additive component situation of change；Using infrared spectrum technology to
It is measured with the oxidation number of oil, nitration value, sulfonation value, moisture, fuel dilution, soot, ethylene glycol etc., obtains oil samples qualitative change
Information in terms of change, monitors the decay process of lubricating oil, and reference frame is provided for lube drain and equipment fault diagnosis.
The method of preparing sample that infrared spectrum analysis is carried out to fluid mainly uses liquid cell method, the thickness and window of liquid cell
Between collimation on infrared spectrum quality influence it is very big, especially on quantitative determination influence can it is very big, liquids in general sample is all put
It is measured in the liquid tank that light path is 0.01~1mm.
Document CN105758797A discloses a kind of liquid-film method that is applied to and carries out infrared spectrum analysis to corrosive liquids
Sample cell, its mainly include pond body, end cap, the first Infrared Lens, the second Infrared Lens, wherein pond body is cylindrical, end cap with
The outer wall of the pond body is connected through a screw thread, and first, second Infrared Lens and annular gasket is sealed and is connected by screwing end cap
Fixation is connect, takes this to form a thin layer confined air that can accommodate fluid sample between the first Infrared Lens and the second Infrared Lens
Between.Lower end and pond body upper end at the top of the end cap are equipped with elastic washer, when by screw end cap make it is first, second infrared
When lens and annular gasket are connected, elastic washer can play a part of sealing.
By analyzing above sample cell every time, it is found that it need to take liquid cell apart, then in determination sample
Testing sample is instilled, then is measured after upper lid is installed, measure also needs to take apart sample cell to clean after completing every time,
Especially when carrying out quantitative analysis, due to the reason compressed when installing every time, the thickness of liquid cell can be different, therefore, make
Also need first to measure its accurate thickness with interference fringe method with preceding.As can be seen here, it is more numerous to there is measurement process in above-mentioned sample cell
It is trivial, the problem of measurement efficiency is low.
The content of the invention
Technical problem to be solved in the utility model is that prior art has that measurement process is cumbersome, and measurement efficiency is low to ask
A kind of topic, there is provided new sample cell.The sample cell has the characteristics of assembling is simple, easy to use, and energy continuous several times measure.
In order to solve the above technical problems, the technical solution adopted in the utility model is as follows：A kind of sample cell, its feature exist
In, including pond body, Shang Gai, upper window, lower window, rubber blanket, packing ring and distance piece；
The pond body is to connect a cylinder on cuboid, be sequentially placed above cylinder rubber blanket, lower window, distance piece, on
Window, packing ring；Cylinder outer wall has external screw thread, is connected through a screw thread with upper lid, formed with this between upper and lower window can accommodate it is to be measured
The thin-layer sample chamber of sample.
In above-mentioned technical proposal, upper lid top dead center position is provided with light hole.
In above-mentioned technical proposal, upper caping end is provided with two through hole, available for connection injection port and outlet.
In above-mentioned technical proposal, it is provided with packing ring and upper window and injection port and outlet concentric co-axial two through hole.
In above-mentioned technical proposal, distance piece is provided with a light hole, and this light hole and upper lid top dead center position thang-kng
Hole concentric co-axial.
In above-mentioned technical proposal, when pond body is connected through a screw thread with upper lid, two pilot pins of setting inside upper lid, and
Packing ring, upper window, distance piece, lower window, through hole is set on rubber blanket, by the pilot pin insertion through hole inside upper lid, be allowed to
It is fixed.
In above-mentioned technical proposal, the thin-layer sample chamber optical path length formed between upper and lower window can be adjusted by the thickness of distance piece
Section, its thickness is 0.01~1mm.
Described window up and down through the zinc selenide or KBr of infrared light by can be prepared.
Described distance piece is polytetrafluoroethylmaterial material.
Described rubber blanket is neoprene pad.
Described packing ring is polytetrafluoroethylene gasket.
Prior art is different from, the utility model sample cell when in use, after the completion of once building, can directly lead to
Cross lid and oil sample to be measured is added by the injection port on top, after the completion of measure, cleaning solvent is injected by injection port with syringe, makes it
Slowly extract out through attractor via outlet, clean repeatedly, then dry up, and by the cooperation of injection port and outlet, can be with
Oil sample to be measured is injected after sample cell has been cleaned, then by injection port, is measured so as to continuous several times, improves detection effect
Rate.
Brief description of the drawings
Fig. 1 is dimensional structure diagram of the present utility model.
Fig. 2 is three-dimensional internal anatomy of the present utility model.
Fig. 3 is diagrammatic cross-section of the present utility model.
In Fig. 1~Fig. 3,1 is pond body, and 2 be upper lid, and 3b is upper window, and 3a is lower window, and 4 be neoprene pad, between 5 are
Partition, 6 be polytetrafluoroethylene gasket.
Coordinate accompanying drawing that the utility model is described in detail below.
Embodiment
The sample cell for fluid infrared spectrum analysis provided by the utility model being used continuously, including pond body 1, on
Lid 2, upper window 3b, lower window 3a, neoprene pad 4, distance piece 5, polytetrafluoroethylene gasket 6.
The bottom surface of the pond body 1 is grown for a 75mm, and 50mm is wide, cuboid aluminum plate thick 3mm, is connected always on bottom surface
Footpath is 34mm aluminum cylinders, and its wall thickness is 3mm, and cylinder outer wall has external screw thread；Upper lid 2 is a diameter 40mm aluminum round barrel covers,
An a diameter of 16mm light holes are provided with its top center, the upper inwall processing of lid 2 has internal thread, can with outside the cylinder in pond body 1
Wall is connected through a screw thread.The neoprene pad 4, distance piece 5, polytetrafluoroethylene gasket 6 are also provided with a diameter of 16mm light holes,
Ensure that infrared light can pass through sample cavity.
There are wide, the high 2mm necks of a 3mm long side both sides of the bottom surface of the pond body 1 respectively, can be with the sample on instrument
The truss plug of product pond coordinates；Two through hole is also drilled with the top of upper lid 2, is respectively used to connect injection port and outlet.For conducting
Sample cavity, equally polytetrafluoroethylene gasket 6, on be drilled with concentric co-axial two through hole on window 3b, lead to window 3a, 3b and interval
The space that piece 5 is formed, sample then import sample cavity via injection port.
When pond body 1 and upper lid 2 are connected through a screw thread, for make the injection port on the upper top of lid 2 and outlet and distance piece 5 and on
The position of two through hole is not deviateed, inside upper lid 2 set two pilot pins, and polytetrafluoroethylene gasket 6, on window
3b, distance piece 5, lower window 3a, two through hole is drilled with neoprene pad 4, by the pilot pin insertion through hole inside upper lid 2, make
Fixation.
The build process of the sample cell is：By being sequentially placed neoprene pad 4, lower window above the cylinder of pond body 1
Piece 3a, distance piece 5, upper window 3b, polytetrafluoroethylene gasket 6, then upper lid 2 is positioned over above pond body, inside upper lid 2
Pilot pin is inserted in the through hole of polytetrafluoroethylene gasket 6, upper window 3b, distance piece 5, lower window 3a, neoprene pad 4, is screwed
Upper lid 2 makes window and pad compress mutually, forms the thin-layer sample chamber that can accommodate testing sample between upper and lower window with this.
In use, testing sample is injected into sample cavity by syringe via injection port, and with plastic cap by sample introduction
Mouth and outlet are clogged, and form closed structure, then sample cell is inserted on the sample cell truss in infrared spectrometer, are carried out infrared
Detection.
(such as 1~2 week) should redeterminate thickness to the sample cell at regular intervals in use, with procuratorial work sample cell
Whether thickness changes, and whether collimation changes between window, and this is to quantitatively critically important.
Claims (7)
1. a kind of sample cell, it is characterised in that including pond body, Shang Gai, upper window, lower window, rubber blanket, packing ring and distance piece；
The pond body is to connect a cylinder on cuboid, be sequentially placed above cylinder rubber blanket, lower window, distance piece, upper window,
Packing ring；Cylinder outer wall has external screw thread, is connected through a screw thread with upper lid, testing sample can be accommodated by being formed with this between upper and lower window
Thin-layer sample chamber.
2. sample cell according to claim 1, it is characterised in that upper lid top dead center position is provided with light hole.
3. sample cell according to claim 1, it is characterised in that upper caping end is provided with two through hole, available for connect into
Sample mouth and outlet.
4. sample cell according to claim 1, it is characterised in that be provided with packing ring and upper window and injection port and go out sample
Mouth concentric co-axial two through hole.
5. sample cell according to claim 1, it is characterised in that distance piece is provided with a light hole, and this light hole with
Upper lid top dead center position light hole concentric co-axial.
6. sample cell according to claim 1, it is characterised in that when pond body is connected through a screw thread with upper lid, in upper lid
Portion sets two pilot pins, and packing ring, on window, distance piece, lower window, through hole is set on rubber blanket, inside upper lid
In pilot pin insertion through hole, it is allowed to fixed.
7. sample cell according to claim 1, it is characterised in that the thin-layer sample chamber optical path length formed between upper and lower window
It can be adjusted by the thickness of distance piece, its thickness is 0.01~1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720795541.7U CN206862872U (en) | 2017-07-03 | 2017-07-03 | Sample cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720795541.7U CN206862872U (en) | 2017-07-03 | 2017-07-03 | Sample cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206862872U true CN206862872U (en) | 2018-01-09 |
Family
ID=60829187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720795541.7U Active CN206862872U (en) | 2017-07-03 | 2017-07-03 | Sample cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206862872U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110261364A (en) * | 2019-05-15 | 2019-09-20 | 河北伊诺光学科技股份有限公司 | Sample bottle fixes device, handheld Raman spectrometer and detection method |
| CN114323819A (en) * | 2021-12-17 | 2022-04-12 | 上海航天化工应用研究所 | Device and method for collecting precipitated gas in solid propellant aging process |
-
2017
- 2017-07-03 CN CN201720795541.7U patent/CN206862872U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110261364A (en) * | 2019-05-15 | 2019-09-20 | 河北伊诺光学科技股份有限公司 | Sample bottle fixes device, handheld Raman spectrometer and detection method |
| CN114323819A (en) * | 2021-12-17 | 2022-04-12 | 上海航天化工应用研究所 | Device and method for collecting precipitated gas in solid propellant aging process |
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