CN201072407Y - On-line detecting instrument for minute oil-hydrocarbon in water - Google Patents
On-line detecting instrument for minute oil-hydrocarbon in water Download PDFInfo
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- CN201072407Y CN201072407Y CNU2007200552089U CN200720055208U CN201072407Y CN 201072407 Y CN201072407 Y CN 201072407Y CN U2007200552089 U CNU2007200552089 U CN U2007200552089U CN 200720055208 U CN200720055208 U CN 200720055208U CN 201072407 Y CN201072407 Y CN 201072407Y
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Abstract
The utility model relates to an online surveymeter of trace oil-hydrocarbon in water, which comprises an exciting light device, a sampling part, a photoelectric detector and a data processing circuit. The exciting light from the exciting light device irradiates on a water sample in the sampling part; fluorescence dispersed by the water sample darts on the photoelectric detector to transform into electrical signals that are input the data processing circuit for processing; the sampling part comprises a sampling bucket and a return bucket, wherein, the sampling bucket is arranged inside the return bucket; the bottom of the sampling bucket is provided with an inlet of the water sample and connected with a service pipe; the bottom of the return bucket is provided with an outlet of the water sample and connected with a discharge tube of the water sample. The exciting light irradiates on a water sample in the sampling part is the water sample on the overflow face at the top of the sampling bucket on which the exciting light irradiates. The utility model can avoid pollution to detection face since the water sample contacts with the vessel wall of the sampling part, which promotes the correctness of detection result while the sampling part does not need to be cleaning regularly. The utility model also can arrange a compensating device of reference samples, which further promotes the correctness of detection result.
Description
Technical field:
The utility model relates to micro oil in a kind of water-hydrocarbon on-line detector.
Background technology:
The water body petroleum-type is polluted more and more becomes a serious problem, it is introduced that light oil 5ppm, heavy oil 1ppm will make potable water produce peculiar smell, contains petroleum-type 0.01ppm in the seawater, just can make fish produce " smell of petrol " in 24 hours.China every year enters about 30,000 tons of the petroleum substance of rivers by industrial waste water, is one of major pollutants of environment water, and petroleum industry also is important link in the production run to the detection of oil content in the water in addition.The off-line type conventional method is measured, and the measuring process cycle is long, and complex operation is not real-time monitoring, and the extractant that uses in the detection also causes secondary pollution to environment easily.And online detection always is the important means in the fields of measurement, but the general at present on-line detector that adopts, its sample mode is: water sample flows through in a glass tube from top to bottom, exciting light side outside pipe is passed glass tube walls irradiation water sample, and photodetector receives exciting light at the glass tube opposite side; Also have the people that the water sample free flow is crossed a tilted-putted glass plate, form a very thin water sample layer on glass plate, exciting light and photodetector are installed in the suitable angle of water sample thin layer top.These two kinds of detection modes all exist water sample and sample unit, as glass tube, glass plate, and the surface of contact of wall, the time has been grown, and " spot " will appear in this surface of contact, influences testing result, and the user must regularly clean sample unit.
Summary of the invention:
The purpose of this utility model is exactly the deficiency that overcomes existing on-line detector, micro oil in a kind of water-hydrocarbon on-line detector is proposed, can avoid polluting because of the detection faces that water sample contact sample unit wall produces, improve the accuracy of testing result, the user need not regularly clean sample unit.
For achieving the above object, micro oil in the utility model water-hydrocarbon on-line detector, comprise excitation-light unit, sample unit, photodetector and data processing circuit, the water sample of the excitation light irradiation that excitation-light unit sends in the sample unit, the fluorescence that water sample scatters projects photodetector and converts electric signal to, this electric signal input data processing circuit carries out data processing, described sample unit comprises the sample introduction bucket and the bucket that refluxes, the sample introduction bucket is located in the bucket that refluxes, sample introduction bucket bottom is provided with the water sample import, connect the water sample service pipe, backflow bucket bottom is provided with the water sample outlet, connect the water sample vent pipe, described excitation light irradiation is the water sample of excitation light irradiation to sample introduction bucket top spillwag chute to the water sample in the sample unit.
In a kind of preferred implementation, described photodetector is located at directly over sample introduction bucket spillwag chute excitation light irradiation point vertical, shines the exciting light light beam of sample introduction bucket spillwag chute and is vertically projected between the fluorescent light beam of photodetector angle greater than 45 ° and less than 90 °.
As improvement of the present utility model, also be provided with the reference sample is placed reference sample compensation system on the sample introduction bucket spillwag chute excitation light irradiation point.This reference sample compensation system can be to comprise the rotating disk that is loaded with the reference sample and drive the rotating disk rotation and make reference sample on the rotating disk go to motor on the sample introduction bucket spillwag chute excitation light irradiation point, and described rotating disk can be half round turntable.The reference sample is alternately placed identical position with the detected water sample product, utilize the drift of reference sample fluorescence value to compensate the fluorescent value of detected water sample product on year-on-year basis, various drifts such as the drift of comprehensive compensation temperature drift thus, excitating light strength, detector temperature are floated, the circuit temperature is floated further improve the accuracy of testing result.
Because sample unit of the present utility model adopts the sample introduction bucket and the bucket that refluxes, the point of irradiation of exciting light is the spillwag chute at sample introduction bucket top, just, spillwag chute is exactly the detection faces of detected water sample product, so there is not the surface of contact of water sample and sample unit wall in the point of irradiation of exciting light, avoided polluting because of the detection faces that water sample contact sample unit wall produces, so the accuracy of testing result is improved, and does not need regularly to clean sample unit.Because the utility model is online detection, need not extract again, need not extractant, so, avoided secondary pollution.The utility model also can further improve the accuracy of testing result by reference sample compensation system is set.
The utility model is applied to the waterworks and carries out the water source monitoring; The monitoring of sewage treatment plant, industrial sewage, oil exploitation, airport, tanker berth, boats and ships waste discharge; Refinery, chemical plant, main equipment chilled water, power station hydrocarbon leak detection etc.To preserving the ecological environment, protect water resource, the monitoring sewage discharge will play an important role; To play important impetus to robotization, the digital Construction that promotes environment monitoring means and technology.
Description of drawings:
Fig. 1 is the structural representation of the utility model embodiment one;
Fig. 2 is the structural representation of the utility model embodiment one sample unit;
Fig. 3 is the vertical view of Fig. 2;
Fig. 4 is the structural representation between the utility model embodiment two reference sample compensation systems and the sample unit;
Fig. 5 is the vertical view of Fig. 4;
Embodiment:
The CONSTRUCTED SPECIFICATION of the utility model embodiment is described in detail in detail below in conjunction with accompanying drawing:
Embodiment one:
As shown in Figure 1 to Figure 3, the utility model embodiment one comprises excitation-light unit 1, sample unit 2, photodetector 3 and data processing circuit 4.Excitation-light unit 1 comprises ultraviolet light generator, narrow band pass filter and collimation quartz lens, and the ultraviolet light that ultraviolet light generator sends penetrates exciting light through narrow band pass filter and collimation quartz lens successively.Sample unit 2 comprises sample introduction bucket 21 and the bucket 22 that refluxes, sample introduction bucket 21 is located in the bucket 22 that refluxes, sample introduction bucket 21 bottoms are provided with water sample import 211, connect water sample service pipe 212, water sample service pipe 212 is provided with flowmeter and flow-limiting valve 213, backflow bucket 22 bottoms are provided with water sample outlet 221, connect water sample vent pipe 222.The exciting light 11 that excitation-light unit 1 sends shines the water sample in the sample unit 2, and just: exciting light 11 shines the water sample of sample introduction bucket 21 top spillwag chutes 214.Photodetector 3 is located at directly over spillwag chute 214 excitation light irradiation point positions vertical, the fluorescence 5 that spillwag chute 214 water samples scatter projects photodetector 3, be the interference of the reflected light that reduces exciting light 11, shine exciting light 11 light beams of spillwag chute 214 and be vertically projected between fluorescence 5 light beams of photodetector 3 angle greater than 45 ° and less than 90 ° to photodetector 3.Photodetector 3 receives fluorescence 5 and converts electric signal to, this electric signal input data processing circuit 4 carries out data processing, data processing circuit 4 comprises A/D change-over circuit and cpu control circuit, and the electric signal of photodetector 3 outputs carries out relevant treatment through A/D change-over circuit input cpu control circuit.
In the detection, the detected water sample product are by water sample service pipe 212, through flowmeter, flow-limiting valve 213, flow into by sample introduction bucket 21 bottom water sample inlets 211, form a spillwag chute 214 stably at the top, the water sample that overflows reclaims through the bucket 22 that refluxes, and discharges by water sample vent pipe 222.By regulating flow-limiting valve 213 control flooding velocitys, spillwag chute 214 is not produced spring up.Excitation light irradiation is to spillwag chute 214, the water sample of spillwag chute 214 scatters fluorescence under excitation light irradiation, the proportional relation of oil content content in this fluorescence intensity and the water, photodetector receives fluorescence and opto-electronic conversion, calculates oil content content in the detected water sample product water through CPU.Overflow sample mode of the present utility model has been avoided the greasy dirt deposition, need not clean sample unit, brings convenience to the user.It is very important controlling the stable of spillwag chute 214 by flow-limiting valve 213 during use, otherwise springing up of spillwag chute 214 can influence testing result.
Further, data processing circuit 4 of the present utility model can as communication modes such as GSM mobile handset notes, send to monitoring center with Monitoring Data, so that monitoring center monitors the water quality of each check point in real time by the design communication interface.
Embodiment two:
For obtaining testing result more accurately, embodiment two is increasing the reference sample compensation system that the reference sample is placed on the sample introduction bucket 21 spillwag chutes 214 excitation light irradiation points on the basis of embodiment one.Extremely shown in Figure 5 as Fig. 4, reference sample compensation system comprises the rotating disk 6 that is loaded with the reference sample and drives rotating disk 6 rotations and make reference sample on the rotating disk 6 go to motor 7 on the sample introduction bucket 21 spillwag chutes 214 excitation light irradiation points, rotating disk 6 is half round turntable, is loaded with the reference product on the rotating disk 6.Because of the fluorescent characteristic of reference sample should be constant under identical excitation light irradiation, have only excitation light intensity, temperature factor such as to float and just may make its change, therefore the change of its fluorescent value factor such as reflected that excitation light intensity, temperature are floated, so, in the practical application, can compensate the measured value of detected water sample product on year-on-year basis with the drift of reference sample fluorescence value.Operating process is: after start is pre-thermally-stabilised, with semicircle rotating disk 6 Rotate 180s ° to sample introduction bucket 21 positions, cover in spillwag chute 214, this moment, the reference sample was in the tested light path, CPU measures and writes down this initial fluorescence value, and rotating disk 6 returns to the origin-location then, regularly so measures the fluorescent value of reference sample and the fluorescent value of actual detected water sample product according to the time interval of setting later on, CPU obtains the fluorescent value after actual detected water sample product compensate by computing.
All the other structures of embodiment two are identical with embodiment one, seldom describe herein.
Embodiment two with the reference sample place the identical position of detected water sample product, under identical excitation light irradiation, utilize same optical path, same light electric explorer to receive, and the fluorescent value of reference sample is fixed, and utilizes the drift of reference sample fluorescence value to compensate the fluorescent value of detected water sample product on year-on-year basis.Therefore, this embodiment comprehensive compensation the drift of temperature drift, excitating light strength, detector temperature float, various factors such as the circuit temperature is floated is to the influence of detected value, further improves the accuracy of testing result.
Claims (10)
1. micro oil in the water-hydrocarbon on-line detector, comprise excitation-light unit, sample unit, photodetector and data processing circuit, the water sample of the excitation light irradiation that excitation-light unit sends in the sample unit, the fluorescence that water sample scatters projects photodetector and converts electric signal to, this electric signal input data processing circuit carries out data processing, it is characterized in that: described sample unit comprises the sample introduction bucket and the bucket that refluxes, the sample introduction bucket is located in the bucket that refluxes, sample introduction bucket bottom is provided with the water sample import, connect the water sample service pipe, backflow bucket bottom is provided with the water sample outlet, connect the water sample vent pipe, described excitation light irradiation is the water sample of excitation light irradiation to sample introduction bucket top spillwag chute to the water sample in the sample unit.
2. on-line detector according to claim 1 is characterized in that: described photodetector is located at directly over sample introduction bucket spillwag chute excitation light irradiation point vertical.
3. on-line detector according to claim 2 is characterized in that: describedly shine the exciting light light beam of sample introduction bucket spillwag chute and be vertically projected between the fluorescent light beam of photodetector angle greater than 45 ° and less than 90 °.
4. on-line detector according to claim 1, it is characterized in that: described excitation-light unit comprises ultraviolet light generator, narrow band pass filter and collimation quartz lens, and the ultraviolet light that ultraviolet light generator sends penetrates exciting light through narrow band pass filter and collimation quartz lens successively.
5. on-line detector according to claim 1 is characterized in that: described data processing circuit comprises A/D change-over circuit and cpu control circuit, and the electric signal of photodetector output carries out data processing through A/D change-over circuit input cpu control circuit.
6. on-line detector according to claim 1 is characterized in that: described water sample service pipe is provided with flow-limiting valve.
7. on-line detector according to claim 1 is characterized in that: described water sample service pipe is provided with flowmeter.
8. according to each described on-line detector of claim 1 to 7, it is characterized in that: also be provided with the reference sample is placed reference sample compensation system on the sample introduction bucket spillwag chute excitation light irradiation point.
9. on-line detector according to claim 8 is characterized in that: described reference sample compensation system comprises the rotating disk that is loaded with the reference sample and drives the rotating disk rotation and make reference sample on the rotating disk go to motor on the sample introduction bucket spillwag chute excitation light irradiation point.
10. on-line detector according to claim 9 is characterized in that: described rotating disk is half round turntable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200552089U CN201072407Y (en) | 2007-08-06 | 2007-08-06 | On-line detecting instrument for minute oil-hydrocarbon in water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200552089U CN201072407Y (en) | 2007-08-06 | 2007-08-06 | On-line detecting instrument for minute oil-hydrocarbon in water |
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| Publication Number | Publication Date |
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| CN201072407Y true CN201072407Y (en) | 2008-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200552089U Expired - Lifetime CN201072407Y (en) | 2007-08-06 | 2007-08-06 | On-line detecting instrument for minute oil-hydrocarbon in water |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102692402A (en) * | 2012-06-21 | 2012-09-26 | 烟台森科特智能仪器有限公司 | Detection method and sensor for oil type pollutants |
| CN106950183A (en) * | 2017-02-28 | 2017-07-14 | 中国科学院合肥物质科学研究院 | A kind of portable soil nutrient detection means based on spectral technique |
| CN108169139A (en) * | 2018-02-08 | 2018-06-15 | 宁波水表股份有限公司 | Turbidity transducer automatic pollution removing calibrating installation |
| CN109444108A (en) * | 2018-12-26 | 2019-03-08 | 中国原子能科学研究院 | Flow cell |
-
2007
- 2007-08-06 CN CNU2007200552089U patent/CN201072407Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102692402A (en) * | 2012-06-21 | 2012-09-26 | 烟台森科特智能仪器有限公司 | Detection method and sensor for oil type pollutants |
| CN106950183A (en) * | 2017-02-28 | 2017-07-14 | 中国科学院合肥物质科学研究院 | A kind of portable soil nutrient detection means based on spectral technique |
| CN108169139A (en) * | 2018-02-08 | 2018-06-15 | 宁波水表股份有限公司 | Turbidity transducer automatic pollution removing calibrating installation |
| CN109444108A (en) * | 2018-12-26 | 2019-03-08 | 中国原子能科学研究院 | Flow cell |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080611 |
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| CX01 | Expiry of patent term |