CN102338787A - UV-visible detector flow-through cell - Google Patents
UV-visible detector flow-through cell Download PDFInfo
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- CN102338787A CN102338787A CN2010102354055A CN201010235405A CN102338787A CN 102338787 A CN102338787 A CN 102338787A CN 2010102354055 A CN2010102354055 A CN 2010102354055A CN 201010235405 A CN201010235405 A CN 201010235405A CN 102338787 A CN102338787 A CN 102338787A
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- flow cell
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Abstract
The invention discloses an UV-visible detector flow-through cell, which comprises a flow-through cell body and front and rear clamping plates connected on the flow-through cell body. pads are disposed between the flow-through cell body and the front clamping plate and between the flow-through cell body and the rear clamping plate; the flow-through cell body, the front and rear clamping plates and corresponding position of the pads are provided with location holes, inside which positioning pins are disposed; and quartz glass window on the front and rear clamping plates is provided with pressed nuts through a gasket. According to the UV-visible detector flow-through cell provided by the invention, the pressed nuts are used to tightly press the quartz glass window on the front and rear clamping plates onto the pads through the gasket, so as to enhance compressive strength of the flow-through cell, prevent a liquid from flowing out along the contact surface of the pads and the flow-through cell body and solve the problem of liquid leakage caused by poor compressive strength of a present flow-through cell.
Description
Technical field
The present invention relates to the liquid-phase chromatographic analysis technical field, more particularly, relate to a kind of ultraviolet-visible detecting device flow cell.
Background technology
The ultraviolet-visible detecting device; Be based on the detecting device that solute molecule absorbs the principle design of ultraviolet-visible light, promptly when the ultraviolet-visible segment beam sees through flow cell, if the moving phase absorbing light; At this moment, its absorbance log is directly proportional with the optical path length of extinction component concentrations and flow cell.At present, the ultraviolet-visible detecting device is most widely used detecting device, it have highly sensitive, noise is low, the range of linearity is wide, to advantage such as flow velocity and temperature be all insensitive, can be used for analysis, preparative chromatography and microanalysis.
Wherein: ultraviolet-visible detecting device flow cell is one of core component of this detecting device; It mainly acts on and provides the passage that a light beam and moving phase cross; The very little moving phase of irradiation pulsation that the ultraviolet-visible segment beam is continued; Produce light absorption, thereby realize the quantitative test of various samples.
Have high pressure owing to flow into the liquid of flow cell, improve the highest withstand voltage stability that helps improving instrument of flow cell, yet it is not enough that existing flow cell is withstand voltage, under situation pressurized behind line clogging or the pond, can produce leakage, causes the instability of instrument.
Summary of the invention
In view of this, the present invention provides a kind of ultraviolet-visible detecting device flow cell, to solve existing flow cell causes generating leakage because of the compressive resistance difference problem.
For addressing the above problem, the technical scheme of proposition is following:
A kind of ultraviolet-visible detecting device flow cell comprises: flow cell body and be connected the forward and backward clamping plate on the said flow cell body; Wherein:
All be placed with pad between said flow cell body and the forward and backward clamping plate;
The relevant position of said flow cell body, forward and backward clamping plate and pad is provided with pilot hole, is placed with register pin in the hole;
Through packing ring gland nut is installed on the quartz window on the said forward and backward clamping plate.
Preferably, be provided with two flow cells in the said flow cell body, be respectively reference cell and measuring cell.
Preferably, said reference cell is a cylindrical hole, and said measuring cell is a round taper hole.
Preferably, said pad is a polyimide material pad.
Preferably, said flow cell body is a stainless steel flow cell body.
Preferably, the entrance and exit on the said flow cell body is connected with stainless-steel pipe respectively.
Preferably, the internal diameter of said stainless-steel pipe is 0.18mm, and external diameter is 1.6mm.
Can find out from above-mentioned technical scheme; In the ultraviolet-visible detecting device flow cell disclosed by the invention; Gland nut is pressed on the quartz window on the forward and backward clamping plate on the pad through packing ring; Strengthened the compressive resistance of flow cell, avoided liquid to flow out, solved existing flow cell causes generating leakage because of the compressive resistance difference problem along the surface of contact of pad and flow cell body.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of the disclosed a kind of ultraviolet-visible detecting device flow cell of the embodiment of the invention;
Fig. 2 is the disclosed a kind of ultraviolet-visible detecting device flow cell assembling synoptic diagram of the embodiment of the invention;
Fig. 3 is the D-D cut-open view of Fig. 1;
Fig. 4 is the C-C cut-open view of Fig. 1.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
The embodiment of the invention discloses a kind of ultraviolet-visible detecting device flow cell, to solve existing flow cell causes generating leakage because of the compressive resistance difference problem.
As illustrated in fig. 1 and 2, the disclosed ultraviolet-visible detecting device of present embodiment flow cell comprises: flow cell body 1 and be connected front plate 2, the rear plate 3 on the flow cell body 1; Wherein:
All be placed with pad 4 between flow cell body 1 and front plate 2, the rear plate 3;
The relevant position of flow cell body 1, front plate 2, rear plate 3 and pad 4 is provided with pilot hole, is placed with register pin 5 in the hole;
Quartz window 6 on through packing ring 7 gland nut 8 is installed.
Concrete, offer on four jiaos of flow cell body 1 and be used to place the screw thread hole, when the assembling flow cell; The position of calibration flow cell body 1, front plate 2 and rear plate 3 upper screwed holes; Make one of which one correspondence, screw is screwed in the threaded hole, fixedly front plate 2 and rear plate 3 are on flow cell body 1.
Below introduce the assembling process of this ultraviolet-visible detecting device flow cell in detail:
One in the pad 4 is placed between flow cell body 1 and the front plate 2; Another is placed between flow cell body 1 and the rear plate 3; And; Aim at the position of the pilot hole on flow cell body 1, front plate 2 and the rear plate 3, register pin 5 is inserted in the pilot holes, pass logical pond body 1, front plate 2 and rear plate 3 successively; Screw is screwed in the threaded hole on rear plate 3, logical pond body 1 and the front plate 2 successively, fixing logical pond body 1, front plate 2, rear plate 3 and two pads 4; At last, gland nut 8 is pressed on the quartz window 6 through packing ring 7, like this, sealing is stronger between two pads 4 and the logical pond body 1, strengthens the compressive strength of flow cell, avoids it because the problem of the low generation leakage that causes of compressive strength.
In the process of testing, in order to improve the signal to noise ratio (S/N ratio) of detecting device, the flow cell that this embodiment provides adopts the diplopore pond; One is reference cell; One is measuring cell, thus, measures the noise that receives external interference with the signal of reference two-way and produce and changes and more tend to consistent.
And the design of ultraviolet-visible detecting device flow cell must reduce light scattering as far as possible, and, need be optical length and internal diameter is little, the stream flow cell passage of turbulization not, like this, can make detecting device reach advantages of higher stability and sensitivity.
Empirical tests obtains, and conical flow cell can be eliminated " liquid prism " effect of the variations in refractive index formation of pond inner fluid, enhancing detection device stability and sensitivity; So; Measuring cell adopts round taper hole in the flow cell that present embodiment provides, and its specification is: end diameter 0.9mm, outside diameter 1.4mm; Length 10mm, volume 10.5 μ L.Reference cell can adopt cylindrical hole, and its specification is: diameter 1.4mm, length 10mm, volume 15.4 μ L.
As shown in Figure 3, round taper hole measuring cell 11 crosses flow cell body 1, and small end contacts with pad 4 between front plate 2 and the flow cell body 1; Big end contacts with pad 4 between rear plate 3 and the flow cell body 1, and, also be provided with the inlet 14 that is connected with measuring cell 11 two ends in the flow cell body 1 and export 16; And enter the mouth and 14 be connected with stainless-steel tube respectively on 16 with outlet; Concrete, moving phase flows into measuring cell 11 through stainless-steel tube 13 by inlet 14, is flowed to big end by its small end; Flow out measuring cell 11 by outlet 16 again, after stainless-steel tube 15 flows out flow cell body 1.Equally, as shown in Figure 4, cylindrical hole reference cell 12 also crosses flow cell body 1; Two ends contact with pad 4 respectively, and these measuring cell 11 two ends also link to each other and are connected with inlet 18 and outlet 20, and enter the mouth 18 with outlet 20 on be connected with stainless-steel tube respectively; Concrete; Moving phase flows into reference cell 12 through stainless-steel tube 17 by inlet 18, flows out reference cell 12 by outlet 20 again, after stainless-steel tube 19 flows out flow cell body 1.
Meanwhile, light,, shines through opposite side quartz window 6 and produces electric signal on the photo-electric conversion element and measure and handle after being partially absorbed by moving phase through the irradiation flow cell from a side of flow cell.
Concrete, the stainless-steel tube that is connected on the entrance and exit of measuring cell 11 and reference cell 12 is the annulus column jecket, and its internal diameter can be 0.18mm, and external diameter can be 1.6mm.
At the disclosed ultraviolet-visible detecting device of embodiment of the invention flow cell; For the crushing resistance that improves the flow cell body and the crushing resistance of pad; Adopt stainless steel to produce the flow cell body, adopt polyimide to produce pad with high temperature resistant, low temperature resistant, excellent mechanical properties and radiation-resistant property advantage.
In sum; In the ultraviolet-visible detecting device flow cell disclosed by the invention; After location through register pin and screw fixing, gland nut is pressed on the quartz window on the forward and backward clamping plate on the pad through packing ring again, has strengthened the compressive resistance of flow cell; Avoid liquid to flow out, solved existing flow cell causes generating leakage because of the compressive resistance difference problem along the surface of contact of pad and flow cell body.
Each embodiment adopts the mode of going forward one by one to describe in this instructions, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments among this paper.Therefore, the present invention will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (7)
1. a ultraviolet-visible detecting device flow cell is characterized in that, comprising: flow cell body and be connected the forward and backward clamping plate on the said flow cell body; Wherein:
All be placed with pad between said flow cell body and the forward and backward clamping plate;
The relevant position of said flow cell body, front plate, rear plate and pad is provided with pilot hole, is placed with register pin in the hole;
Through packing ring gland nut is installed on the quartz window on the said forward and backward clamping plate.
2. ultraviolet-visible detecting device flow cell according to claim 1 is characterized in that, is provided with two flow cells in the said flow cell body, is respectively reference cell and measuring cell.
3. ultraviolet-visible detecting device flow cell according to claim 2 is characterized in that said reference cell is a cylindrical hole, and said measuring cell is a round taper hole.
4. ultraviolet-visible detecting device flow cell according to claim 1 is characterized in that, said pad is a polyimide material pad.
5. ultraviolet-visible detecting device flow cell according to claim 1 is characterized in that, said flow cell body is a stainless steel flow cell body.
6. ultraviolet-visible detecting device flow cell according to claim 1 is characterized in that the entrance and exit on the said flow cell body is connected with stainless-steel pipe respectively.
7. ultraviolet-visible detecting device flow cell according to claim 6 is characterized in that the internal diameter of said stainless-steel pipe is 0.18mm, and external diameter is 1.6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010235405.5A CN102338787B (en) | 2010-07-21 | 2010-07-21 | UV-visible detector flow-through cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010235405.5A CN102338787B (en) | 2010-07-21 | 2010-07-21 | UV-visible detector flow-through cell |
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| Publication Number | Publication Date |
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| CN102338787A true CN102338787A (en) | 2012-02-01 |
| CN102338787B CN102338787B (en) | 2014-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010235405.5A Active CN102338787B (en) | 2010-07-21 | 2010-07-21 | UV-visible detector flow-through cell |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105424847A (en) * | 2014-08-15 | 2016-03-23 | 生物辐射实验室股份有限公司 | Hplc Reverse-Flow Flow Cell |
| CN106680209A (en) * | 2016-12-13 | 2017-05-17 | 上海仪电分析仪器有限公司 | Flow cell body installation and improvement structure for enhancing sealing performance |
| CN106769861A (en) * | 2016-12-13 | 2017-05-31 | 上海仪电分析仪器有限公司 | A kind of flow cell body structure-improved for strengthening antijamming capability |
| CN110346461A (en) * | 2018-04-03 | 2019-10-18 | 中国科学院大连化学物理研究所 | A kind of light detection flow cell |
| CN110494737A (en) * | 2017-03-17 | 2019-11-22 | 株式会社岛津制作所 | Circulate pool unit |
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| US4192614A (en) * | 1975-02-06 | 1980-03-11 | The Perkin-Elmer Corporation | L/C detector cell assembly |
| GB2097548A (en) * | 1981-04-27 | 1982-11-03 | Accuspec Ltd | Flow-through cells for spectroscopy |
| US5054919A (en) * | 1989-02-07 | 1991-10-08 | Linear Instruments Corporation | Seal for high pressure and small volume sample cells |
| CN2689227Y (en) * | 2004-04-08 | 2005-03-30 | 上海伍丰科学仪器有限公司 | Detector flowing pool of liquid-phase chromatograph |
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2010
- 2010-07-21 CN CN201010235405.5A patent/CN102338787B/en active Active
Patent Citations (4)
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| US4192614A (en) * | 1975-02-06 | 1980-03-11 | The Perkin-Elmer Corporation | L/C detector cell assembly |
| GB2097548A (en) * | 1981-04-27 | 1982-11-03 | Accuspec Ltd | Flow-through cells for spectroscopy |
| US5054919A (en) * | 1989-02-07 | 1991-10-08 | Linear Instruments Corporation | Seal for high pressure and small volume sample cells |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105424847A (en) * | 2014-08-15 | 2016-03-23 | 生物辐射实验室股份有限公司 | Hplc Reverse-Flow Flow Cell |
| CN106680209A (en) * | 2016-12-13 | 2017-05-17 | 上海仪电分析仪器有限公司 | Flow cell body installation and improvement structure for enhancing sealing performance |
| CN106769861A (en) * | 2016-12-13 | 2017-05-31 | 上海仪电分析仪器有限公司 | A kind of flow cell body structure-improved for strengthening antijamming capability |
| CN110494737A (en) * | 2017-03-17 | 2019-11-22 | 株式会社岛津制作所 | Circulate pool unit |
| CN110346461A (en) * | 2018-04-03 | 2019-10-18 | 中国科学院大连化学物理研究所 | A kind of light detection flow cell |
| CN110346461B (en) * | 2018-04-03 | 2022-01-11 | 中国科学院大连化学物理研究所 | Light detection flow cell |
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| Publication number | Publication date |
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| CN102338787B (en) | 2014-04-02 |
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