CN110487764B - Manual and automatic sample feeding mode switching device of quantitative fluorescence analyzer - Google Patents
- ️Fri Jun 21 2024
Info
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Publication number
- CN110487764B CN110487764B CN201910812079.0A CN201910812079A CN110487764B CN 110487764 B CN110487764 B CN 110487764B CN 201910812079 A CN201910812079 A CN 201910812079A CN 110487764 B CN110487764 B CN 110487764B Authority
- CN
- China Prior art keywords
- cuvette
- sample
- accommodating groove
- mounting seat
- fluorescence analyzer Prior art date
- 2019-08-30 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/645—Specially adapted constructive features of fluorimeters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
- G01N35/1095—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices for supplying the samples to flow-through analysers
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Optical Measuring Cells (AREA)
Abstract
The invention discloses a hand-automatic sample feeding mode switching device of a quantitative fluorescence analyzer, which comprises a sample cell base provided with a containing groove, a flowing cuvette and a cuvette mounting seat for fixing the flowing cuvette; an optical component is arranged on the side wall of the accommodating groove; the cuvette mounting seat is mounted on the guide mechanism, so that the cuvette mounting seat can drive the flowing cuvette to be inserted into or removed from the accommodating groove. The automatic sample feeding mode switching device for the quantitative fluorescence analyzer can realize the switching between automatic sample feeding and manual sample feeding, has a simple structure and is convenient to operate, and the defect that the quantitative fluorescence analyzer only has an automatic sample feeding or manual sample feeding single mode in the prior art is overcome.
Description
Technical Field
The invention relates to a hand-automatic sample feeding mode switching device of a quantitative fluorescence analyzer, and belongs to the field of oil-gas resource exploration geological logging.
Background
The main component of petroleum is a mixture of various alkanes, cycloalkanes and aromatic hydrocarbons, and is one of the main objects of geological exploration. The aromatic hydrocarbon component contained in the oil-well logging device can be excited and emit fluorescence under ultraviolet irradiation, and the characteristic is utilized to detect whether the stratum contains oil or not and the oil content, so that the oil-well logging device is applied as a special logging technology. The petroleum quantitative fluorescence analyzer is developed from the 90 s of the last century, and has better application effect in the process of oil gas exploration, development and logging, so the petroleum quantitative fluorescence analyzer is popularized and applied in various oil fields and research institutions in China. Before quantitative fluorescence analysis, the sample is required to be soaked, diluted and analyzed by using the n-hexane, so that operators frequently contact the n-hexane reagent, the n-hexane has strong volatility and certain toxicity, can enter a human body through a respiratory tract, skin and other ways, long-term contact is unfavorable for the health of the operators, and the dilution multiple of the sample is difficult to grasp because of more experience, and has higher requirements on the level of the operators. In order to avoid frequent contact between operators and n-hexane, quantitative fluorescence analyzers capable of automatic sample injection are commercially available, for example, a three-dimensional automatic petroleum fluorescence analyzer disclosed in chinese patent document CN206057180U, in which samples are injected into a flow cuvette by a peristaltic pump. However, the automatic quantitative fluorescence analyzer needs to clean the devices through which the whole set of fluid such as a flow cuvette, a hose, a peristaltic pump, an injection needle and the like passes after the analysis is finished, is suitable for continuous analysis operation, is suitable for single sample fluorescence analysis, is also suitable for manually placing the cuvette into a sample cell for analysis, and only cleans the cuvette after the analysis is finished. At present, no quantitative fluorescence analyzer capable of switching between an automatic mode and a manual mode exists.
Disclosure of Invention
Accordingly, an object of the present invention is to provide a switching device capable of switching to an automatic mode or a manual mode to perform analysis work.
In order to achieve the above purpose, the invention provides a hand-automatic sample feeding mode switching device of a quantitative fluorescence analyzer, which comprises a sample cell base provided with a containing groove, a flow cuvette and a cuvette mounting seat for fixing the flow cuvette; an optical component is arranged on the side wall of the accommodating groove; the cuvette mounting seat is mounted on the guide mechanism, so that the cuvette mounting seat can drive the flowing cuvette to be inserted into or removed from the accommodating groove.
The accommodating groove is a through groove, and one end of the flow cuvette is an insertion end and is used for being inserted into the accommodating groove; the insertion end is detachably connected with a sample injection connector.
The hand automatic sample feeding mode switching device of the quantitative fluorescence analyzer further comprises a seal head, and the seal head is detachably connected to the insertion end.
The cuvette mounting seat comprises a shell provided with a mounting groove, the flow cuvette is mounted in the shell, and a window hole is formed in the side wall of the shell for the light path of the optical component to pass through; the housing is insertable into the receiving groove and positions the window in a position corresponding to the optical assembly.
The cuvette mounting seat is provided with a station locking mechanism which is used for locking the cuvette mounting seat when the flowing cuvette is inserted into the accommodating groove for automatic sample injection and locking the cuvette mounting seat when the flowing cuvette is moved out of the accommodating groove for manual sample injection.
One end of the guide mechanism is connected with the sample Chi Ji, the other end of the guide mechanism is connected with the sample cell backing plate, and the sample cell base is fixedly connected with the sample cell backing plate through a sample cell connecting plate; the cuvette mounting socket comprises a support plate for supporting the shell, and the support plate is mounted on the guide mechanism and can move between the sample cell base and the sample cell backing plate; the station locking mechanism comprises a vertical plate arranged on the supporting plate, screw holes are respectively formed in the vertical plate and located on the upper side and the lower side of the supporting plate, a bolt is arranged in each screw hole, a positioning pin head is arranged at the end of each bolt, and positioning pin holes are respectively formed in the sample cell base and the sample cell backing plate.
The guide mechanism is a guide rod.
The optical component comprises an optical fiber coupling lens and two reflectors, wherein the optical fiber coupling lens is in threaded connection with the installation screw hole, and the reflectors are pressed in the reflector grooves through fixing sheets.
By adopting the technical scheme, when the automatic sampling mode is used, the hand automatic sampling mode switching device of the quantitative fluorescence analyzer moves the flow cuvette upwards to enter the accommodating groove, the positioning pin head at the end part of the bolt enters the positioning pin hole on the sample cell base to finish positioning by screwing the bolt positioned at the upper side of the supporting plate, and the insertion end of the flow cuvette is connected with the sampling connector, so that the analysis operation can be started; when the manual sample injection mode is used, the sample injection connector on the flow cuvette is taken down, the flow cuvette is sealed by using the seal head, the flow cuvette is moved downwards to move out of the accommodating groove, the positioning pin head at the end part of the bolt enters into the positioning pin hole on the sample cell backing plate to finish positioning by screwing the bolt positioned at the lower side of the supporting plate, and at the moment, the common cuvette can be manually placed into the accommodating groove to carry out analysis operation. The automatic sample feeding mode switching device for the quantitative fluorescence analyzer can realize the switching between automatic sample feeding and manual sample feeding, has a simple structure and is convenient to operate, and the defect that the quantitative fluorescence analyzer only has an automatic sample feeding or manual sample feeding single mode in the prior art is overcome.
Drawings
Fig. 1 is a schematic diagram of a manual-automatic sample feeding mode switching device of a quantitative fluorescence analyzer in an automatic sample feeding mode.
Fig. 2 is an exploded view of fig. 1.
Fig. 3 is an exploded view of the flow cell and mounting structure of the cell mount of fig. 2.
Fig. 4 is a schematic structural diagram of the manual-automatic sample feeding mode switching device of the quantitative fluorescence analyzer in the manual sample feeding mode.
Fig. 5 is a schematic diagram of the mounting structure of the closure head and the flow cuvette.
Detailed Description
The invention is described in further detail below with reference to the drawings and the detailed description.
As shown in the figure, the hand-automatic sample feeding mode switching device of the quantitative fluorescence analyzer comprises a light source connecting bracket 1, a sample cell base 2, an optical fiber coupling lens 3, a reflecting mirror 4, a sample cell connecting plate 5, a guide rod 6, a cuvette mounting seat 7 and a sample cell backing plate 8. The sample cell base 2 is provided with a containing groove 21, and the containing groove 21 is used for containing a cuvette. One side of the sample cell base 2 is fixed on the light source connecting support 1, emergent light of the light source can pass through the through holes on the side wall of the accommodating groove 21, the optical fiber coupling lens 3 and the two reflectors 4 are respectively arranged on the other three side walls of the accommodating groove 21, the optical fiber coupling lens 3 is in threaded connection in the mounting screw hole, and the reflectors 4 are pressed in the grooves of the reflectors 4 through the fixing sheets 9.
The flow cuvette 10 is fixed in the cuvette mounting socket 7, the cuvette mounting socket 7 comprises a shell 71 provided with a mounting groove 70 and a support plate 72 for supporting the shell 71, and after the flow cuvette 10 is inserted into the mounting groove 70, the flow cuvette 10 is fixedly blocked by an upper end cover 73. The flow cell 10 is located within the housing 71 with apertures 710 provided in the side walls of the housing 71 for the passage of light. The housing 71 can be inserted into the accommodating groove 21, and the window 710 can be positioned at a position corresponding to the optical module constituted by the optical fiber coupling lens 3, the reflecting mirror 4, and the like.
The cuvette mounting seat 7 is mounted on the guide rod 6, so that the cuvette mounting seat 7 can drive the flowing cuvette 10 to be inserted into or removed from the accommodating groove 21. One end of the guide rod 6 is connected with the sample cell base 2, the other end of the guide rod is connected with the sample cell backing plate 8, and the sample cell base 2 and the sample cell backing plate 8 are fixedly connected through the sample cell connecting plate 5. The guide rod 6 passes through the support plate 72 so that the support plate 72 can move between the cuvette base 2 and the cuvette backing plate 8.
The cuvette mounting seat 7 is provided with a station locking mechanism, which is used for locking the cuvette mounting seat 7 when the flowing cuvette 10 is inserted into the accommodating groove 21 for automatic sample injection and locking the cuvette mounting seat 7 when the flowing cuvette 10 is moved out of the accommodating groove 21 for manual sample injection. The station locking mechanism comprises vertical plates 111 arranged on the supporting plate 72, screw holes 112 are respectively arranged on the vertical plates 111 and located on the upper side and the lower side of the supporting plate 72, a bolt 113 is arranged in each screw hole 112, a positioning pin head 114 is arranged at the end part of each bolt 113, and positioning pin holes 115 are respectively arranged on the sample cell base 2 and the sample cell backing plate 8.
The accommodating groove 21 is a through groove, and one end of the flow cuvette 10 is an insertion end for being inserted into the accommodating groove 21; the insertion end of the flow cuvette 10 is detachably screwed with a sample introduction connector 101, and the other end is screwed with a discharge connector 102. The insertion end of the flow cell 10 may also be detachably screwed to a closure 103 for closing it.
With the adoption of the technical scheme, when the automatic sample injection mode is used, the hand automatic sample injection mode switching device of the quantitative fluorescence analyzer moves the flow cuvette 10 upwards to enter the accommodating groove 21, and the positioning pin head 114 at the end part of the bolt 113 enters the positioning pin hole 115 on the sample cell base 2 to finish positioning by screwing the bolt 113 positioned at the upper side of the supporting plate 72, so that the insertion end of the flow cuvette 10 is connected with the sample injection joint 101, and the analysis operation can be started; when the manual sample injection mode is used, the sample injection connector 101 on the flow cuvette 10 is taken down, the flow cuvette 10 is closed by using the seal head, the flow cuvette 10 is moved downwards to move out of the accommodating groove 21, the positioning pin head 114 at the end part of the bolt 113 enters the positioning pin hole 115 on the sample cell backing plate 8 to finish positioning by screwing the bolt 113 positioned at the lower side of the supporting plate 72, and at the moment, the common cuvette can be manually put into the accommodating groove 21 for analysis operation. The automatic sample feeding mode switching device for the quantitative fluorescence analyzer can realize the switching between automatic sample feeding and manual sample feeding, has a simple structure and is convenient to operate, and the defect that the quantitative fluorescence analyzer only has an automatic sample feeding or manual sample feeding single mode in the prior art is overcome.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (4)
1. A hand automatic sample feeding mode switching device of a quantitative fluorescence analyzer is characterized in that: the device comprises a sample pool base provided with a containing groove, a flow cuvette and a cuvette mounting seat for fixing the flow cuvette; an optical component is arranged on the side wall of the accommodating groove; the cuvette mounting seat is mounted on the guide mechanism, so that the cuvette mounting seat can drive the flowing cuvette to be inserted into or removed from the accommodating groove; the cuvette mounting seat comprises a shell provided with a mounting groove, the flow cuvette is mounted in the shell, and a window hole is formed in the side wall of the shell for the light path of the optical component to pass through; the housing is insertable into the receiving groove and positions the window in a position corresponding to the optical component; the cuvette mounting seat is provided with a station locking mechanism which is used for locking the cuvette mounting seat when the flowing cuvette is inserted into the accommodating groove for automatic sample injection and locking the cuvette mounting seat when the flowing cuvette is moved out of the accommodating groove for manual sample injection; one end of the guide mechanism is connected with the sample Chi Ji, the other end of the guide mechanism is connected with the sample cell backing plate, and the sample cell base is fixedly connected with the sample cell backing plate through a sample cell connecting plate; the cuvette mounting seat comprises a support plate for supporting the shell, and the support plate is mounted on the guide mechanism and can move between the sample cell base and the sample cell pad plate; the station locking mechanism comprises a vertical plate arranged on the supporting plate, screw holes are respectively formed in the vertical plate and located on the upper side and the lower side of the supporting plate, a bolt is arranged in each screw hole, a positioning pin head is arranged at the end part of each bolt, and positioning pin holes are respectively formed in the sample cell base and the sample cell backing plate; the guide mechanism is a guide rod; the optical component comprises an optical fiber coupling lens and two reflectors, wherein the optical fiber coupling lens is in threaded connection with the installation screw hole, and the reflectors are pressed in the reflector grooves through fixing sheets; the accommodating groove is a through groove, and one end of the flow cuvette is an insertion end and is used for being inserted into the accommodating groove; the insertion end is detachably connected with a sample injection connector; when the automatic sample injection mode is used, the flow cuvette is moved upwards to enter the accommodating groove, and the insertion end of the flow cuvette is connected with the sample injection connector; when the manual sample injection mode is used, the sample injection connector on the flow cuvette is taken down, the flow cuvette is moved downwards to move out of the accommodating groove, and the common cuvette is manually placed into the accommodating groove for analysis operation.
2. The hand-automated sample-feeding mode switching apparatus of a quantitative fluorescence analyzer of claim 1, wherein: the hand automatic sample feeding mode switching device of the quantitative fluorescence analyzer further comprises a seal head, and the seal head is detachably connected to the insertion end.
3. The hand-automated sample-feeding mode switching apparatus of a quantitative fluorescence analyzer of claim 2, wherein: the seal head and the sample injection connector can be in threaded connection with the flow cuvette.
4. The hand-automated sample-feeding mode switching apparatus of a quantitative fluorescence analyzer of claim 3, wherein: the side of the flow cuvette remote from the insertion end is connected with a discharge connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910812079.0A CN110487764B (en) | 2019-08-30 | 2019-08-30 | Manual and automatic sample feeding mode switching device of quantitative fluorescence analyzer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910812079.0A CN110487764B (en) | 2019-08-30 | 2019-08-30 | Manual and automatic sample feeding mode switching device of quantitative fluorescence analyzer |
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| Publication Number | Publication Date |
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| CN110487764A CN110487764A (en) | 2019-11-22 |
| CN110487764B true CN110487764B (en) | 2024-06-21 |
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| CN201910812079.0A Active CN110487764B (en) | 2019-08-30 | 2019-08-30 | Manual and automatic sample feeding mode switching device of quantitative fluorescence analyzer |
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