CN108467034A - A kind of novel graphite crystal derivatization device - Google Patents
A kind of novel graphite crystal derivatization device Download PDFInfo
- Publication number
- CN108467034A CN108467034A CN201810121635.5A CN201810121635A CN108467034A CN 108467034 A CN108467034 A CN 108467034A CN 201810121635 A CN201810121635 A CN 201810121635A CN 108467034 A CN108467034 A CN 108467034A
- Authority
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- China
- Prior art keywords
- graphite crystal
- shielding core
- graphite
- cylinder
- mounting cap
- Prior art date
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 83
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 83
- 239000010439 graphite Substances 0.000 title claims abstract description 83
- 239000013078 crystal Substances 0.000 title claims abstract description 62
- 238000001212 derivatisation Methods 0.000 title claims abstract description 20
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 15
- 239000010937 tungsten Substances 0.000 claims abstract description 15
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 4
- 238000005520 cutting process Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012805 post-processing Methods 0.000 description 3
- 229910001369 Brass Inorganic materials 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002149 energy-dispersive X-ray emission spectroscopy Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000002285 radioactive effect Effects 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 229910052770 Uranium Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000011041 smoky quartz Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 description 1
- 238000004876 x-ray fluorescence Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/20—Graphite
- C01B32/21—After-treatment
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/22—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material
- G01N23/223—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material by irradiating the sample with X-rays or gamma-rays and by measuring X-ray fluorescence
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Inorganic Chemistry (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
The present invention relates to a kind of novel graphite crystal derivatization devices, including graphite crystal cylinder, tungsten shielding core and shielding core mounting cap；The graphite crystal cylinder is integrally formed for graphite crystal；The shielding core mounting cap is detachably connected with the graphite crystal cylinder；And the shielding core mounting cap is fixedly connected and described shield after core mounting cap is connect with the graphite crystal cylinder makes the tungsten shield the center that core is in the graphite crystal cylinder by shielding core support line for the tungsten shielding core.Beneficial effects of the present invention are as follows：The diffractometer of the present invention eliminates graphite cutting bonding process, reduces loss using the graphite crystal cylinder formed inside metallic cylinder is deposited directly to；Diffractometer main body is changed to one by two sections, keeps the integrality of graphite crystal, and the mounting means for shielding core is changed to one end installation, has not only maintained the optimum state of graphite, but also facilitate the installation of shielding core.
Description
Technical field
The invention belongs to material analysis fields, and in particular to a kind of novel graphite crystal derivatization device.
Background technology
The pre- diffracting X-rays luminoscope of graphite crystal is the dedicated analysis instrument in post-processing production and research.
Conventional energy-dispersive X-ray fluorescence (EDXRF) analyzer (XRF) is generally by X-ray tube, detector, spectrometer system and data
Reason system forms.When the stronger post-processing sample of measurement radioactivity, the radioactivity of sample itself can greatly increase the sheet of spectrogram
Bottom seriously affects the sensitivity of measurement.
Earliest Russian scientist has developed the pre- diffracting X-rays luminoscope of graphite crystal, solves sample radioactivity influence
Problem.Atomic energy institute had developed the pre- diffracting X-rays luminoscope of graphite crystal in 2007, and applied in the post-processing in China
Try factory.Its core component is graphite crystal diffractometer, and first generation graphite diffractometer structure is as shown in Figure 1：
One layer of graphite crystal 2 is pasted in cylindric 1 inner wall of brass shell to support with finer wire in cylinder center position,
One tungsten shielding core 3 is installed, when ray injects diffractometer from one end, direct light (radioactive ray for containing sample itself) is shielded
Core stops, and the diffraction that the X-ray of specific wavelength then passes through graphite enters detector, plays the work for reducing radioactive background
With.
Graphite crystal is very fragile, it is difficult to be machined, since shielding core is mounted on cylindrical center, to manufacture and the side of assembly
Just diffractometer is made two sections, is connected with screw, shielding core support line 4 is secured in a press.There is a rectangular slab of stone among diffractometer in this way
Black gap 5, and the gap is on the best geometric position of diffraction, is had an adverse effect to diffracting effect.First generation diffraction
Device uses graphite planar, cuts into the slice of 2mm wide, splices in brass barrel, and cutting, bonding needs are very fine, due to
Graphite is frangible, often there is 10% or so loss.
Invention content
In view of the deficiencies in the prior art, the object of the present invention is to provide a kind of novel graphite crystal derivatization devices, until
Influence of the graphite gap of splicing to diffracting effect can be solved the problems, such as less.
Technical scheme is as follows：
A kind of novel graphite crystal derivatization device, including graphite crystal cylinder, tungsten shielding core and shielding core mounting cap；The stone
Smoky quartz body cylinder is integrally formed for graphite crystal；The shielding core mounting cap is detachably connected with the graphite crystal cylinder；Institute
State tungsten shielding core by shield core support line be fixedly connected with the shielding core mounting cap and the shielding core mounting cap with it is described
The tungsten shielding core is set to be in the center of the graphite crystal cylinder after the connection of graphite crystal cylinder.
Further, above-mentioned novel graphite crystal derivatization device, the graphite crystal outer layer are provided with shell, the shell
It is detachably connected with the shielding core mounting cap.
Further, above-mentioned novel graphite crystal derivatization device is provided with internal thread on the shielding core mounting cap, described
The external screw thread with the screw-internal thread fit is provided on shell.
Further, above-mentioned novel graphite crystal derivatization device, the shell are copper shell.
Further, the quantity of above-mentioned novel graphite crystal derivatization device, the shielding core support line is no less than 3.
Further, the data of above-mentioned novel graphite crystal derivatization device, the shielding core support line are 4.
Beneficial effects of the present invention are as follows：
The diffractometer of the present invention eliminates graphite using the graphite crystal cylinder formed inside metallic cylinder is deposited directly to
Bonding process is cut, loss is reduced；Diffractometer main body is changed to one by two sections, keeps the integrality of graphite crystal, shields core
Mounting means be changed to one end installation, not only maintained the optimum state of graphite, but facilitate shielding core installation.
Description of the drawings
Fig. 1 is the structural schematic diagram of the graphite crystal derivatization device in background technology.
Fig. 2 is the structural schematic diagram of the shielding core mounting cap of the novel graphite crystal derivatization device of the present invention.
In above-mentioned attached drawing, 1, shell；2, graphite crystal；3, tungsten shields core；4, shielding core supports line；5, graphite gap；6、
Shield core mounting cap；7, internal thread.
Specific implementation mode
The present invention is described in detail below with reference to the accompanying drawings and embodiments.
As shown in Fig. 2, the present invention provides a kind of novel graphite crystal derivatization devices, including graphite crystal cylinder is (in Fig. 2 not
Show), tungsten shielding core 3 and shielding core mounting cap 6；The graphite crystal cylinder is integrally formed for graphite crystal；The shielding core
Mounting cap 6 is detachably connected with the graphite crystal cylinder；The tungsten shielding core 3 supports line 4 and the shielding by shielding core
Core mounting cap 6 is fixedly connected and the shielding core mounting cap 6 connect with the graphite crystal cylinder after make at tungsten shielding core 3
In the center of the graphite crystal cylinder.
Graphite crystal outer layer is provided with shell (not shown), and the shell is detachable with the shielding core mounting cap 6
Connection.The connection type of mounting cap and shell, which can be bolt, to be threadedly coupled, and can also be clamping, and the present embodiment provides
Be the example being threadedly coupled, be provided with internal thread on the shielding core mounting cap, be provided on the shell and the interior spiral shell
The external screw thread of line cooperation.
The shell outside graphite crystal cylinder in the present embodiment can form graphite crystal circle for depositing graphite crystal
Cylinder at metallic cylinder (such as copper cylinder).
In order to ensure that tungsten shields the stabilization of core 3, shielding core supports the quantity of line to be no less than 3 in the present embodiment, preferably
It is 4.
The diffractometer of the present invention eliminates graphite using the graphite crystal cylinder formed inside metallic cylinder is deposited directly to
Bonding process is cut, loss is reduced；Diffractometer main body is changed to one by two sections, keeps the integrality of graphite crystal, shields core
Mounting means be changed to one end installation, not only maintained the optimum state of graphite, but facilitate shielding core installation.
First generation diffractometer (concrete structure is described referring to background technology) uses plate graphite crystal, cuts into the thin of 2mm
Strip is divided into two-section and is bonded among cylinder, and graphite itself is more crisp, and the high graphite of crystallinity is very easy to layering and crushes, whole
A process requires very stringent.Graphite cutting step is omitted using cylindric graphite crystal in novel graphite diffractometer
Suddenly, as a result of the thinking for installing shield from one end, graphite itself need not be cut into two sections, enormously simplify graphite diffraction
The processing of device, installation process.
Through experiment, the automatic x-ray fluorescence analysis device of novel graphite diffractometer design processing using the present invention,
Under the conditions of 45kV, 4mA, the precision 1.2% of uranium, 0.15 μ g/mL of detection limit are measured.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and range.If in this way, belonging to the model of the claims in the present invention and its equivalent technology to these modifications and changes of the present invention
Within enclosing, then the present invention is also intended to include these modifications and variations.
Claims (6)
1. a kind of novel graphite crystal derivatization device, it is characterised in that：Including graphite crystal cylinder, tungsten shielding core (3) and shielding core
Mounting cap (6)；The graphite crystal cylinder is integrally formed for graphite crystal；The shielding core mounting cap (6) and the graphite wafer
Body cylinder is detachably connected；The tungsten shielding core (3) supports line (4) fixed with the shielding core mounting cap (6) by shielding core
Connection and the shielding core mounting cap (6) make the tungsten shielding core be in the graphite wafer after being connect with the graphite crystal cylinder
The center of body cylinder.
2. novel graphite crystal derivatization device as described in claim 1, it is characterised in that：The graphite crystal outer layer is provided with outer
Shell, the shell are detachably connected with the shielding core mounting cap (6).
3. novel graphite crystal derivatization device as claimed in claim 2, it is characterised in that：It is provided on the shielding core mounting cap
Internal thread (7) is provided with the external screw thread with the screw-internal thread fit on the shell.
4. novel graphite crystal derivatization device as claimed in claim 2, it is characterised in that：The shell is copper shell.
5. the novel graphite crystal derivatization device as described in claim 1-4 is any, it is characterised in that：The shielding core supports line
(4) quantity is no less than 3.
6. novel graphite crystal derivatization device as claimed in claim 5, it is characterised in that：The number of the shielding core support line (4)
According to being 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810121635.5A CN108467034B (en) | 2018-02-07 | 2018-02-07 | Graphite crystal derivatizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810121635.5A CN108467034B (en) | 2018-02-07 | 2018-02-07 | Graphite crystal derivatizer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108467034A true CN108467034A (en) | 2018-08-31 |
| CN108467034B CN108467034B (en) | 2024-05-14 |
Family
ID=63266212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810121635.5A Active CN108467034B (en) | 2018-02-07 | 2018-02-07 | Graphite crystal derivatizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108467034B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109709125A (en) * | 2019-01-10 | 2019-05-03 | 中国原子能科学研究院 | A kind of shuttle-type shielding graphite crystal diffractometer |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB855886A (en) * | 1957-10-26 | 1960-12-07 | Centre Nat Rech Scient | Improvements in x-ray diffractograph devices |
| CN106342216B (en) * | 2005-11-07 | 2010-11-10 | 中国原子能科学研究院 | Energy-dispersive X-ray fluorescence (EDXRF) analytical system |
| CN208103943U (en) * | 2018-02-07 | 2018-11-16 | 中国原子能科学研究院 | A kind of novel graphite crystal derivatization device |
-
2018
- 2018-02-07 CN CN201810121635.5A patent/CN108467034B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB855886A (en) * | 1957-10-26 | 1960-12-07 | Centre Nat Rech Scient | Improvements in x-ray diffractograph devices |
| CN106342216B (en) * | 2005-11-07 | 2010-11-10 | 中国原子能科学研究院 | Energy-dispersive X-ray fluorescence (EDXRF) analytical system |
| CN208103943U (en) * | 2018-02-07 | 2018-11-16 | 中国原子能科学研究院 | A kind of novel graphite crystal derivatization device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109709125A (en) * | 2019-01-10 | 2019-05-03 | 中国原子能科学研究院 | A kind of shuttle-type shielding graphite crystal diffractometer |
| CN109709125B (en) * | 2019-01-10 | 2024-05-14 | 中国原子能科学研究院 | Shuttle-type shielding graphite crystal diffractometer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108467034B (en) | 2024-05-14 |
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