CN201477217U - Non-contact type liquid detector in pipe - Google Patents
Non-contact type liquid detector in pipe Download PDFInfo
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- CN201477217U CN201477217U CN2009201537850U CN200920153785U CN201477217U CN 201477217 U CN201477217 U CN 201477217U CN 2009201537850 U CN2009201537850 U CN 2009201537850U CN 200920153785 U CN200920153785 U CN 200920153785U CN 201477217 U CN201477217 U CN 201477217U
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- glass tube
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Abstract
The utility model relates to a non-contact type liquid detector in a pipe, comprising a shell, a detection part and a glass pipe; the glass pipe is serially connected with the detection part and the shell by a pipe hole for liquid in and out; the detection part is arranged in the shell and is fixed with the shell; the detection part comprises a glass pipe rack and a control circuit board, wherein the control circuit board comprises a light-emitting diode, a photoelectric sensor and a signal output circuit; the glass pipe rack comprises a port for placing a light emitting electrode of the light-emitting diode, a port for placing a light receiving electrode of the photoelectric sensor and a glass pipe reserved hole for containing the glass pipe.
Description
Technical field
The utility model relates to and is used for the liquid in pipe perception of flowing through in the thermometrically technology and detects, and especially relates to a kind of photoelectric detecting technology of using and detects through perception at the effluent stream in the tubule.
Background technology
At present, the liquid detection senses technology that is applied in the thermometrically technology mainly contains three classes:
1. electrode detection method: this method relates to a water sample input port 1, jigger 2, electrode catheter 3, a signal wire 4.Its application principle is: when in the jigger 2 water sample being arranged, the various ions in the water sample move under the effect of electrode catheter and make electrode catheter 3 two ends form path.Its structure is mainly when touching probe after water level rises in the jigger as shown in Figure 1, and the electrode and the probe electrode of jigger bottom form path, thereby obtain signal.Its shortcoming and defect is: (1) can not survey some nonconducting liquid, as pure water, alcohol, some liquid state organics etc.; (2) solution may have corrosivity, makes to select for use the such precious metal of platinum, porpezite as electrode, costs an arm and a leg; (3) ion enrichment produces serious influence to measurement result at electrode surface, and the metallic element that contains in the sewage as this metering is enriched on the electrode by redox reaction, and reaction with it when in the future measuring acid solution.
2. photoelectricity transmission beam method: this method relates to the light emission utmost point 5, the light-receiving utmost point 6 and a middle glass tube 7, and its principle is: according to the difference of liquid and air refraction, what light produced after by glass tube converges or disperse function.Because liquid refractive index is bigger than air, when awaiting the honour of your presence the effect of converging by force during for liquid in the pipe, a little less than the effect of converging of in managing, awaiting the honour of your presence during for air.The light intensity that detects receiving end just can obtain whether liquid is arranged in the pipe.Principle schematic as shown in Figure 2.Its shortcoming and deficiency are: when in the pipe being darker liquid of color or sewage, since the light that sends from transmitting terminal by Liquid Absorption a part, the light intensity that receives from receiving end can weaken much accordingly so, and allowing easily has in the pipe the darker liquid mistiming of color to be judged to no liquid in the pipe.
3. taper pin-photronreflectometric technic: this method relates to a light emitter 8, light-receiving utmost point 9, a cone-shaped glass probe 10.Its principle is: according to air and liquid refractive index difference, when conical probe is in air dielectric 11 (as Fig. 3-1.), the light that emitter sends light in probe is totally reflected to receiving end, when conical probe is in liquid medium 12 (as Fig. 3-2.), refraction has taken place in light on the interface of conical probe, thereby receiving pole can not receive light signal.Its shortcoming and deficiency are: (1) forms obstruction or erroneous judgement if be installed in the tubule because the taper outshot tangles floccus easily; (2) will to be installed in the tubule difficulty big for device, relatively is suitable for the Level Detection of big liquid level.
In sum, the water quality situation more complicated of sewage and environmental water sample contains a large amount of impurity or corrosivity composition usually, and traditional liquid detection senses technology is not good at the effect in this field.
Summary of the invention
Owing to when prior art detects under the environment to sewage or water quality situation more complicated, detect the effect aspect and have drawback, cause most liquid pick-up unit cost too high, perhaps use limited.The problem that in this field liquid detection senses is used, runs at prior art, the utility model provides a kind of contactless liquid in pipe detecting device, it is characterized in that: comprise shell, detection part, glass tube, described glass tube is connected in series with described detection part and shell by pore, is used for the turnover of liquid; Described detection part places described enclosure, and fixes with described shell; Described detection part comprises cuvette holder and control circuit board, and wherein: described control circuit board comprises light emitting diode, photoelectric sensor and signal output apparatus; Described cuvette holder comprises that a port in order to the light emitter of placing described light emitting diode, one reserve pore in order to the port of the light-receiving utmost point of placing described photoelectric sensor and one in order to the glass tube that described glass tube is placed in one.
Description of drawings
Fig. 1 is the detector of liquid of existing application electrode detection method design;
Fig. 2 is the detector of liquid of existing application photoelectricity transmission beam method design;
Fig. 3 is the liquid level detector of existing application taper pin-photronreflectometric technic design, Fig. 3-1. be the situation of conical probe in air dielectric wherein, and Fig. 3-2. be the situation of conical probe in liquid medium 12;
Fig. 4 is a light path principle synoptic diagram of the present utility model, the situation during for medium air in Fig. 4-1. be glass tube wherein, and Fig. 4-2. be the situation when being media fluid in the glass tube;
Fig. 5 is right view and the front view of the utility model embodiment;
Fig. 6 is a cuvette holder structural representation of the present utility model.
Embodiment
Figure 5 shows that the right view and the front view of a kind of contactless liquid in pipe detecting device of the utility model, 18 is shell, and 19 is detection part, and 15 is glass tube, and 20,21 is self-tapping screw.Glass tube 15 is connected in series with detection part 19 and shell 18 by pore 24 and forms, and detection part 19 places shell 18 inside, and fixes with shell 18 by a self-tapping screw 20, and shell 18 fixes by a self-tapping screw 21 and panel.Wherein glass tube 15 is used for the turnover of liquid, and liquid flows to from an end of glass tube 15, flows out from the other end.Detection part 19 is cores of the present utility model, comprise a cuvette holder and a control circuit board, wherein cuvette holder is the core apparatus that the utility model is realized liquid detection senses technology, for the realization of the utility model light path principle of work provides indispensable servicing unit.The cuvette holder synoptic diagram as shown in Figure 6; Control circuit board mainly is made up of light emitting diode, photoelectric sensor and signal output apparatus.Light emitting diode is used to provide the transmitting illuminant of light emitter 13, photoelectric sensor is used to provide the light signal of the light-receiving utmost point 14 to receive, and light signal is transformed into electric signal, by the signal output apparatus on the control circuit board, whether export electric signal and judge in the glass tube whether be liquid.Shell 18 and detection part 19 selection black ABS resin are to reduce the influence of external light source to testing process.
Be illustrated in figure 6 as cuvette holder synoptic diagram of the present utility model, mainly comprise a port 22 in order to the light emitter 13 of placement light emitting diode, 23, one glass tubes of port in order to the light-receiving utmost point 14 of placement photoelectric sensor are reserved pore 24, in order to glass tube 15 is placed in one.Wherein the light source of light emitter 13 adopts the infrarede emitting diode transmitting illuminant, and the light-receiving utmost point 14 adopts the infrared photoelectric sensor received signal, in order to reduce the interference of sunshine to receiving end.Cuvette holder fixes by led pins, photoelectric sensor pin and glass tube and control circuit board.
Figure 4 shows that light path principle synoptic diagram of the present utility model, 13, one light-receiving utmost points 14 of a light emitter and glass tube 15 utilize light angle of total reflection difference when glass medium projects air dielectric or liquid medium, and a kind of photoelectric detecting method is provided.According to the radiative incident angle that configures, light emitter 13 emission ray cast are on the outer wall of glass tube 15, produce refraction for the first time, the light of refraction continues to be incident upon on the inwall of glass tube 15, when being medium air 16 in the glass tube (as Fig. 4-1.), because glass tube and air two Media densities differ greatly, this refracted ray produces total reflection, project the light-receiving utmost point 14 through the unirefringence of glass tube outer wall again, the photoelectric sensor receiving optical signals of the light-receiving utmost point 14, and light signal is transformed into electric signal output; When being media fluid 17 in the glass tube 15 (as Fig. 4-2.), because glass tube and liquid two Media densities are approximate, this refracted ray produces to reflect for the second time and enters in the glass tube, projects outside the glass tube through twice refraction of glass tube inner and outer wall again, and the light-receiving utmost point 14 does not receive light signal.By light path principle generating process described above, just can whether receive light signal by the light-receiving utmost point 14, come flowing through of perception liquid accurately and reliably.
The utility model is compared with prior art, has the following advantages:
(1) contactless liquid in pipe detecting device of the present utility model is applicable to that the internal diameter of flowing through is that the perception of flowing through of liquid in the tubule about Φ 3mm detects;
(2) adopt photoelectric detection method to have the advantage that detecting device and fluid to be measured need not directly to contact, this contactless detection method makes detecting device not need to contact with the extremely strong liquid of corrosivity, greatly facilitates the maintenance of instrument, has prolonged the serviceable life of detecting device;
(3) can adapt to the liquid of the multiple class of flowing through, as pure water, strong acid and strong base, industrial sewage water sample or the like.When in being particularly useful for managing being darker liquid of color or sewage, the photoelectric detection method of sidewall total reflection can be eliminated the erroneous judgement to light transmission difference liquid when the utility model utilized light from glass medium projection liquid medium.
(4) the control tube internal diameter is the get liquid measure of Φ 3 with the assurance subsequent technique, and device is easy to assembly, the cost performance height.
The utility model embodiment disclosed herein is exemplary, it only is for explanation that the utility model is made an explanation, and be not to restriction of the present utility model, those skilled in the art can understand, can adopt normal optical emitter, normal optical electric transducer etc., thereby make the control detection threshold voltage realize testing goal; Simultaneously can also adopt other transparent pipeline, as the transparent hard tube of PVE etc., be used as light total reflection or refracting interface, these predictable improvement and expansion are included within the protection domain of the present utility model.
Claims (5)
1. contactless liquid in pipe detecting device is characterized in that:
Comprise shell, detection part, glass tube, described glass tube is connected in series with described detection part and shell by pore, is used for the turnover of liquid; Described detection part places described enclosure, and fixes with described shell; Described detection part comprises cuvette holder and control circuit board, and wherein: described control circuit board comprises light emitting diode, photoelectric sensor and signal output apparatus; Described cuvette holder comprises that a port in order to the light emitter of placing described light emitting diode, one reserve pore in order to the port of the light-receiving utmost point of placing described photoelectric sensor and one in order to the glass tube that described glass tube is placed in one.
2. contactless liquid in pipe detecting device according to claim 1 is characterized in that:
Described detection part fixes by self-tapping screw and described shell, and described shell fixes by self-tapping screw and described panel.
3. contactless liquid in pipe detecting device according to claim 1 is characterized in that:
Described shell and detection part adopt the black ABS resin to make.
4. contactless liquid in pipe detecting device according to claim 1 is characterized in that:
Described cuvette holder fixes by described led pins, described photoelectric sensor pin and described glass tube and described control circuit board.
5. contactless liquid in pipe detecting device according to claim 1 is characterized in that:
Described light emitting diode is an infrarede emitting diode, and described photoelectric sensor is an infrared photoelectric sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201537850U CN201477217U (en) | 2009-05-12 | 2009-05-12 | Non-contact type liquid detector in pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201537850U CN201477217U (en) | 2009-05-12 | 2009-05-12 | Non-contact type liquid detector in pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201477217U true CN201477217U (en) | 2010-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201537850U Expired - Lifetime CN201477217U (en) | 2009-05-12 | 2009-05-12 | Non-contact type liquid detector in pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201477217U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607665A (en) * | 2011-12-31 | 2012-07-25 | 常州易控汽车电子有限公司 | Measurement device and electronic measuring cup applying same |
| CN106680888A (en) * | 2017-02-03 | 2017-05-17 | 白玉泽 | Droplet optical detection device |
| CN108469303A (en) * | 2018-01-22 | 2018-08-31 | 河海大学 | A kind of solution colour sensor |
-
2009
- 2009-05-12 CN CN2009201537850U patent/CN201477217U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607665A (en) * | 2011-12-31 | 2012-07-25 | 常州易控汽车电子有限公司 | Measurement device and electronic measuring cup applying same |
| CN106680888A (en) * | 2017-02-03 | 2017-05-17 | 白玉泽 | Droplet optical detection device |
| CN106680888B (en) * | 2017-02-03 | 2018-10-23 | 白玉泽 | A kind of drop optical detection apparatus |
| CN108469303A (en) * | 2018-01-22 | 2018-08-31 | 河海大学 | A kind of solution colour sensor |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Qiao Ruilin Document name: Notification that Application Deemed not to be Proposed |
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| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 510730 Guangzhou economic and Technological Development Zone, Guangdong City, South Road, No. three, No. 12 Patentee after: Yiwen Environmental Science Technology Co., Ltd. Address before: 3 building, B building, No. 885 Shenzhou Road, Guangzhou Science City, Guangdong, Guangzhou, Luogang District 510335, China Patentee before: Yiwen Environmental Science Technology Co., Ltd. |
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| DD01 | Delivery of document by public notice |
Addressee: Yiwen Environmental Science Technology Co., Ltd. Document name: Notification of Passing Examination on Formalities |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100519 |
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| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Yiwen Environmental Science Technology Co., Ltd. Document name: Notification of Expiration of Patent Right Duration |