CN204302174U - A kind of large light path pick-up unit - Google Patents
A kind of large light path pick-up unit Download PDFInfo
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- CN204302174U CN204302174U CN201420783872.5U CN201420783872U CN204302174U CN 204302174 U CN204302174 U CN 204302174U CN 201420783872 U CN201420783872 U CN 201420783872U CN 204302174 U CN204302174 U CN 204302174U
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- colorimetric pool
- light path
- large light
- path pick
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Abstract
The utility model discloses a kind of large light path pick-up unit, it comprises the holder of a hollow, described holder is fixed with the colorimetric pool of upper and lower both ends open, described colorimetric pool side is provided with light source with described holder and light examines device, and the opposite side of described colorimetric pool is close to colorimetric pool and is provided with reflective membrane.Light path totally doubles by the utility model under the condition not increasing colorimetric pool volume and consumption liquid measure, greatly improves accuracy of detection; Also under the condition not changing measuring accuracy, consumption liquid measure can be contracted to 1/4.Large light path pick-up unit of the present utility model has the advantages such as structure is simple, optical length, dependable performance.
Description
Technical field
The utility model relates to a kind of optical detection apparatus, the optical detection apparatus of especially convection cell detection.
Background technology
In the fluid detection technology that market is existing, colorimetric pool is as one of most crucial parts, and its structure plays a decisive role to detection perform precision.Materials different in fluid is different to the absorption of the light of different wave length, therefore the method detecting this material in colorimetric pool, walks certain distance (i.e. light path) with the detection light that it the most easily absorbs, by measuring the intensity by the particular detection light of colorimetric pool from the other end, calculate the consumption (i.e. light loss) of colorimetric pool inner fluid to light intensity, and then calculate the concentration of this material of colorimetric pool inner fluid.When certain material concentration light loss that is very low or that need detection material to produce is very little in the fluid needing detection time, usually need the colorimetric pool of high light path could detect it.High light path also must bring other negative effect, and pond is enough large just can have enough light paths, and enough large pond also must bring the consumption of reaction reagent very large, its perfusion and cleaning expend reagent and the time cycle also very large.It is high that some detects reagent cost, and toxicity is large, and pollute large, processing cost is high, and these all considerably increase testing cost.
There is the colorimetric pool of the high light path evading above problem in the market, such as flow cell, optical length and reagent consumption is little.But its design feature also exposes it and cannot use under some particular surroundings: when High Temperature High Pressure is cleared up and measures, flow cell heating, temperature control, high pressure sealing are all difficult to realize, and once produce or be detained bubble in flow cell, on measurement impact greatly, measurement result and actual deviation are very large.Measure in High Temperature High Pressure situation, still adopt traditional method arranging photoelectric cell and light inspection device in the column type digestion tube both sides being wound around heating wire, its light path is the internal diameter R of digestion tube.When accuracy of detection cannot meet measurement require time, the method for employing normally increases digestion tube internal diameter.When digestion tube internal diameter doubles, can learn according to cylindrical volume computing formula V=π (R/2) 2h, after R becomes 2R, cumulative volume becomes 4V.After R becomes R/2, cumulative volume becomes V/4.Actual reagent consumption is directly proportional to the quadratic power of light path as can be seen here, and therefore while increase light path improves measuring accuracy, the consumption that reagent increases is also very huge.When reagent cost is very high or reagent is poisonous, the newly-increased consuming cost that this kind of method is brought and newly-increased treatment cost of waste liquor also very huge.When accuracy of detection can meet measurement require time, internal diameter is shortened half not affecting under accuracy of detection condition, its reagent consuming cost of saving and treatment cost of waste liquor also very considerable.
Summary of the invention
In order to overcome the problems referred to above, the utility model provides optical length, large light path pick-up unit that reagent consumption is few.
The technical solution of the utility model is to provide a kind of large light path pick-up unit, it comprises the holder of a hollow, described holder is fixed with the colorimetric pool of upper and lower both ends open, described holder is provided with the detection light source of launching detection light in colorimetric pool and examines device with this light detecting light of reception in described colorimetric pool side, the other end of described colorimetric pool is close to colorimetric pool and is provided with reflective membrane.
Preferably, the xsect of described colorimetric pool is square.
Preferably, the xsect of described colorimetric pool is circular.
Preferably, the outer wall of described colorimetric pool has a plane.
Preferably, the outer wall of described colorimetric pool has two to be positioned at colorimetric pool both sides and the plane be parallel to each other.
Preferably, one of them sidewall plane of described colorimetric pool is pasted with reflective membrane.
Preferably, one of them sidewall plane of described colorimetric pool is coated with reflective membrane.
Preferably, described reflecting film material is: mercury, silver, aluminium or other high reflecting materials.
Large light path pick-up unit of the present utility model adopts light reflection principle, being doubled by light path, significantly increasing measuring accuracy when not increasing reagent consumption; Also when not changing light path and measuring accuracy, reagent consumption can be contracted to 1/4.And this scheme has continued traditional ripe scheme be widely used in the High Temperature High Pressure the most easily gone wrong, avoids the generation of new problem.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model most preferred embodiment, and Fig. 2 is the utility model perspective cut away view.
Embodiment
Below embodiment of the present utility model is described in further detail.
As shown in Figure 1, a kind of large light path pick-up unit of the present utility model comprises the holder 1 of a hollow, holder 1 can be designed to be made up of one or more part according to demand, holder inside is provided with colorimetric pool 2, holder is also provided with light source 3 and light inspection device 4 in the side of colorimetric pool 2, colorimetric pool 2 is provided with reflective membrane 5 examining device opposite side with light source and light.
Further, colorimetric pool 2 can rotate along the fixed orifice of holder 1, in order to regulate reflective membrane 5 and light source 3 and light to examine angle between device 4, makes light examine device 4 and can receive the light sent from light source 3 reflected by reflective membrane 5 to greatest extent.
In the utility model most preferred embodiment, the both sides of colorimetric pool 2 have two planes be parallel to each other and wherein a plane is provided with reflective membrane 5, also can not have plane or only have a plane.
Reflective membrane 5 can be bonded on colorimetric pool 2 side plane, also can be plated in or be coated on the side plane of colorimetric pool 2.Reflective membrane 5 adopts common reflectorized material, as aluminium, silver, mercury or other high reflecting materials.The use of above material, all utilize its common performance, it does not make creative contribution to structure of the present utility model, is the Material selec-tion that those of ordinary skill in the art are easy to expect.
Colorimetric pool 2 can be provided with the convenient projection or the annulus that are wound around heating wire.
The utility model in use, detecting liquid enters in colorimetric pool 2 by the opening part of colorimetric pool 2, light source 3 launches particular light ray to the reflective membrane 5 of colorimetric pool 2 other end, particular light ray reaches reflective membrane 5 through the detection liquid in colorimetric pool 2 and colorimetric pool 2, reflect again through the detection liquid in colorimetric pool 2 and colorimetric pool 2 by reflective membrane 5, finally arrive light inspection device 4, examine by light the intensity that device 4 detects particular light ray, thus obtain the concentration of certain material in colorimetric pool 2.
Above embodiment is only the utility model a kind of embodiment wherein, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (8)
1. a large light path pick-up unit, it comprises the holder of a hollow, described holder is fixed with the colorimetric pool of upper and lower both ends open, described holder is provided with in described colorimetric pool side to be launched the detection light source that detects light and receives this light detecting light and examine device in colorimetric pool, and described colorimetric pool the reverse sidewall of device is close to colorimetric pool is provided with reflective membrane examining with detection light source and light.
2. large light path pick-up unit according to claim 1, is characterized in that: the xsect of described colorimetric pool is square.
3. large light path pick-up unit according to claim 1, is characterized in that: the xsect of described colorimetric pool is for circular.
4. large light path pick-up unit according to claim 1, is characterized in that: the outer wall of described colorimetric pool has a plane.
5. large light path pick-up unit according to claim 1, is characterized in that: the outer wall of described colorimetric pool has two to be positioned at colorimetric pool both sides and the plane be parallel to each other.
6. large light path pick-up unit according to claim 1, is characterized in that: described colorimetric pool is pasted with reflective membrane on the sidewall reverse with detection light source.
7. large light path pick-up unit according to claim 1, is characterized in that: described colorimetric pool is coated with reflective membrane on the sidewall reverse with detection light source.
8. large light path pick-up unit according to claim 1, is characterized in that: described reflecting film material is: mercury, silver, aluminium or other high reflecting materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420783872.5U CN204302174U (en) | 2014-12-14 | 2014-12-14 | A kind of large light path pick-up unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420783872.5U CN204302174U (en) | 2014-12-14 | 2014-12-14 | A kind of large light path pick-up unit |
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| Publication Number | Publication Date |
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| CN204302174U true CN204302174U (en) | 2015-04-29 |
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| CN201420783872.5U Active CN204302174U (en) | 2014-12-14 | 2014-12-14 | A kind of large light path pick-up unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104406913A (en) * | 2014-12-14 | 2015-03-11 | 苏州卫水环保科技有限公司 | Large-optical-path detection device |
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2014
- 2014-12-14 CN CN201420783872.5U patent/CN204302174U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104406913A (en) * | 2014-12-14 | 2015-03-11 | 苏州卫水环保科技有限公司 | Large-optical-path detection device |
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Address after: 215000 south side of 2F, building 8, No. 28, Jujin Road, Taiping Street, Xiangcheng District, Suzhou City, Jiangsu Province Patentee after: SUZHOU WEISHUI ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD. Address before: Xiangcheng District Taiping Street Suzhou city of Jiangsu Province Jin Cheng Road 215137 No. 88 Patentee before: SUZHOU WEISHUI ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD. |