CN101561517A - Non-contact type detector and detecting method of liquid in pipe - Google Patents
Non-contact type detector and detecting method of liquid in pipe Download PDFInfo
- Publication number
- CN101561517A CN101561517A CNA2009101363637A CN200910136363A CN101561517A CN 101561517 A CN101561517 A CN 101561517A CN A2009101363637 A CNA2009101363637 A CN A2009101363637A CN 200910136363 A CN200910136363 A CN 200910136363A CN 101561517 A CN101561517 A CN 101561517A
- Authority
- CN
- China
- Prior art keywords
- glass tube
- light
- liquid
- photoelectric sensor
- shell
- Prior art date
- 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.)
- Granted
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000011521 glass Substances 0.000 claims abstract description 65
- 238000001514 detection method Methods 0.000 claims description 26
- 238000013461 design Methods 0.000 claims description 7
- 239000011148 porous material Substances 0.000 claims description 6
- 238000010079 rubber tapping Methods 0.000 claims description 5
- 230000007306 turnover Effects 0.000 claims description 3
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims description 2
- 239000000700 radioactive tracer Substances 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 abstract description 5
- 239000000523 sample Substances 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 239000010865 sewage Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000008447 perception Effects 0.000 description 5
- 241001584775 Tunga penetrans Species 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 210000005239 tubule Anatomy 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 230000005622 photoelectricity Effects 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
Images
Landscapes
- Optical Measuring Cells (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses a non-contact type detector and a detecting method of liquid in a pipe, which comprises a shell, a detecting part, a glass tube and a panel; the glass tube is connected with the detecting part and the shell in series and is used for inlet and outlet of the liquid; the departing part is arranged inside the shell and is fixed with the shell; the shell is fixed with the panel; a control circuit board comprises a light-emitting diode, a photoelectric sensor and a signal output circuit; a frame of the glass tube comprises a port used for holding an optical emitter of the light-emitting diode, a port used for holding the optical receiver of the photoelectric sensor and a reserved tube opening of the glass tube used for holding the glass tube inside.
Description
Technical field
The present invention relates to be used in the thermometrically technology liquid in pipe perception of flowing through and detect, especially relate to a kind of photoelectric detecting technology of using and detect 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 of sewage and environmental water sample is more complicated than hinge, 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 invention provides a kind of contactless liquid in pipe detecting device, it is characterized in that: comprise shell, detection part, glass tube and panel, 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, and described shell and described panel fix; Described detection part comprises cuvette holder and control circuit board, wherein: described control circuit board comprises light emitting diode, photoelectric sensor and signal output apparatus, described light emitting diode is used to provide the transmitting illuminant of light emitter, described photoelectric sensor is used to provide the light signal of the light-receiving utmost point to receive, and light signal is transformed into electric signal, whether export electric signal by described signal output apparatus and judge in the described glass tube whether be liquid; 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.
The present invention also provides the method for using this contactless liquid in pipe detecting device tracer liquid, it is characterized in that, may further comprise the steps: when being air in the glass tube, utilize control circuit board control infrarede emitting diode transmitting illuminant, the light of light emitter emission is incident upon on the outer wall of glass tube according to the incident angle of design, produces refraction for the first time with the inwall of ray cast at glass tube.Because glass tube and air two Media densities differ greatly, light produces total reflection on inwall, reflects the photoelectric sensor that projects the light-receiving utmost point through the glass tube outer wall, and photoelectric sensor is transformed into electric signal output with light signal, the interior no liquid of glass tube this moment; When flow of liquid during through glass tube, because glass tube and liquid two Media densities are approximate, light can not produce total reflection on the glass tube inwall, light will produce for the second time, and refraction enters in the glass tube, project outside the glass tube through twice refraction of glass tube inner and outer wall again, therefore, can't receive light signal in the position of the light-receiving utmost point, the output of signal output apparatus no signal, characterizing has liquid in the pipe this moment.Based on this principle, the perception accurately and reliably of this detecting device flowing through of liquid in pipe.
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. 4 is a light path principle synoptic diagram of the present invention;
Fig. 5 is the right view and the front view of the embodiment of the invention;
Fig. 6 is a cuvette holder structural representation of the present invention.
Embodiment
Figure 5 shows that the right view and the front view of a kind of contactless liquid in pipe detecting device of the present invention, 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 invention, comprise a cuvette holder and a control circuit board, wherein cuvette holder is the core apparatus that the present invention realizes liquid detection senses technology, for the realization of light path principle of work of the present invention 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 invention, 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 invention, 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 designs, 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, when being medium air 16 in the glass tube 15 (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 present invention compares with prior art, has the following advantages:
(1) contactless liquid in pipe detecting device of the present invention 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 detected liquid need not directly to contact, this contactless photoelectric detecting method, make detecting device not need to contact, greatly facilitate the maintenance of instrument, prolonged the serviceable life of detecting device with the extremely strong liquid of corrosivity.
(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.In being particularly useful for managing during for darker liquid of color or sewage, the present invention utilizes the photoelectric detection method of light sidewall total reflection when glass medium projects liquid medium, can eliminate the erroneous judgement to light transmission difference liquid.
(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 present invention embodiment disclosed herein is exemplary, it only is for explanation that the present invention is made an explanation, and be not limitation of the present invention, 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 protection scope of the present invention.
Claims (6)
1. contactless liquid in pipe detecting device is characterized in that:
Comprise shell, detection part, glass tube and panel, 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, and described shell and described panel fix;
Described detection part comprises cuvette holder and control circuit board, wherein: described control circuit board comprises light emitting diode, photoelectric sensor and signal output apparatus, described light emitting diode is used to provide the transmitting illuminant of light emitter, described photoelectric sensor is used to provide the light signal of the light-receiving utmost point to receive, and light signal is transformed into electric signal, whether export electric signal by described signal output apparatus and judge in the described glass tube whether be liquid; 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.
6. the method for the contactless according to claim 1 liquid in pipe detecting device of a use tracer liquid is characterized in that, may further comprise the steps:
When being air in the glass tube, utilize control circuit board control infrarede emitting diode transmitting illuminant, the light of light emitter emission is incident upon on the outer wall of glass tube according to the incident angle of design, produce refraction for the first time with the inwall of ray cast at glass tube, light produces total reflection on inwall, reflect the photoelectric sensor that projects the light-receiving utmost point through the glass tube outer wall, photoelectric sensor is transformed into electric signal output with light signal, no liquid in the expression glass tube;
When flow of liquid during through glass tube, utilize control circuit board control infrarede emitting diode transmitting illuminant, the light of light emitter emission is incident upon on the outer wall of glass tube according to the incident angle of design, produce refraction for the first time with the inwall of ray cast at glass tube, light can not produce total reflection on the glass tube inwall, refraction enters in the glass tube but produce for the second time, project outside the glass tube through twice refraction of glass tube inner and outer wall again, position at the light-receiving utmost point can't receive light signal, the output of signal output apparatus no signal has liquid in the expression glass tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101363637A CN101561517B (en) | 2009-05-12 | 2009-05-12 | Non-contact type detector and detecting method of liquid in pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101363637A CN101561517B (en) | 2009-05-12 | 2009-05-12 | Non-contact type detector and detecting method of liquid in pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101561517A true CN101561517A (en) | 2009-10-21 |
| CN101561517B CN101561517B (en) | 2011-04-13 |
Family
ID=41220397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101363637A Active CN101561517B (en) | 2009-05-12 | 2009-05-12 | Non-contact type detector and detecting method of liquid in pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101561517B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102565063A (en) * | 2010-12-31 | 2012-07-11 | 深圳迈瑞生物医疗电子股份有限公司 | Reagent detection device, system, method, blood analysis device |
| 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 |
| CN102809408A (en) * | 2012-08-15 | 2012-12-05 | 柳州 | Liquid level sensing device and electrical equipment with water tank |
| CN105158814A (en) * | 2014-05-30 | 2015-12-16 | 肖巍 | Detector for medium inside pipe, and detector assembly |
| CN107589074A (en) * | 2017-10-30 | 2018-01-16 | 陕西正大环保科技有限公司 | A kind of anti-pollution structure and method of contactless water quality sensor |
| CN108303217A (en) * | 2018-02-08 | 2018-07-20 | 江苏九九久科技有限公司 | The monitoring device of leakage hydrogen fluoride in heat exchanger |
| CN110646475A (en) * | 2018-06-27 | 2020-01-03 | 深圳市湛华技术有限公司 | Liquid detection device |
| CN110646347A (en) * | 2018-06-26 | 2020-01-03 | 由昉信息科技（上海）有限公司 | Liquid identification system with warning notice and liquid identification method |
| CN112014898A (en) * | 2020-09-07 | 2020-12-01 | 沈阳中光电子有限公司 | Sensor for detecting whether liquid exists in thin tube |
| CN112998595A (en) * | 2021-04-16 | 2021-06-22 | 深圳市杉川机器人有限公司 | Clear water tank assembly and steam engine and floor washing machine with same |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106525199A (en) * | 2016-10-20 | 2017-03-22 | 北京普立泰科仪器有限公司 | Method for detecting if liquid exists in tube or not in liquid medium |
-
2009
- 2009-05-12 CN CN2009101363637A patent/CN101561517B/en active Active
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102565063A (en) * | 2010-12-31 | 2012-07-11 | 深圳迈瑞生物医疗电子股份有限公司 | Reagent detection device, system, method, blood analysis device |
| 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 |
| CN102809408A (en) * | 2012-08-15 | 2012-12-05 | 柳州 | Liquid level sensing device and electrical equipment with water tank |
| CN102809408B (en) * | 2012-08-15 | 2016-01-20 | 浙江兴星电子有限公司 | Liquid level sensing device and there is the electric equipment of water tank |
| CN105158814A (en) * | 2014-05-30 | 2015-12-16 | 肖巍 | Detector for medium inside pipe, and detector assembly |
| CN105158814B (en) * | 2014-05-30 | 2018-11-20 | 侯文婷 | In-pipe media probe and detector assembly |
| CN107589074B (en) * | 2017-10-30 | 2023-07-07 | 陕西正大环保科技有限公司 | Anti-fouling structure and method of non-contact water quality sensor |
| CN107589074A (en) * | 2017-10-30 | 2018-01-16 | 陕西正大环保科技有限公司 | A kind of anti-pollution structure and method of contactless water quality sensor |
| CN108303217A (en) * | 2018-02-08 | 2018-07-20 | 江苏九九久科技有限公司 | The monitoring device of leakage hydrogen fluoride in heat exchanger |
| CN108303217B (en) * | 2018-02-08 | 2020-05-19 | 江苏九九久科技有限公司 | Device for monitoring hydrogen fluoride leaking in heat exchanger |
| CN110646347A (en) * | 2018-06-26 | 2020-01-03 | 由昉信息科技（上海）有限公司 | Liquid identification system with warning notice and liquid identification method |
| CN110646475A (en) * | 2018-06-27 | 2020-01-03 | 深圳市湛华技术有限公司 | Liquid detection device |
| CN112014898A (en) * | 2020-09-07 | 2020-12-01 | 沈阳中光电子有限公司 | Sensor for detecting whether liquid exists in thin tube |
| CN112998595A (en) * | 2021-04-16 | 2021-06-22 | 深圳市杉川机器人有限公司 | Clear water tank assembly and steam engine and floor washing machine with same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101561517B (en) | 2011-04-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101561517B (en) | Non-contact type detector and detecting method of liquid in pipe | |
| CN102043038B (en) | Blood analysis meter test tube detection device and method | |
| CN102445437B (en) | Method and device for measuring turbidity | |
| CN201368756Y (en) | Photoelectric liquid level sensor | |
| CN107478557B (en) | Detection device of dust concentration detector | |
| CN104374743A (en) | Turbidity sensor and turbidity measurement device | |
| CN101514920B (en) | Ultraviolet spectrophotometer detecting head | |
| CN201477217U (en) | Non-contact type liquid detector in pipe | |
| CN106644402A (en) | Integrating sphere and measurement method thereof | |
| CN106908412A (en) | Miniaturization laser methane sensing probe | |
| CN201583496U (en) | Self-cleaning intelligent turbidity sensor | |
| CN203163827U (en) | Home liquid level detecting and alarming system | |
| CN204188525U (en) | Turbidity transducer and turbidity meter | |
| CN103645161A (en) | Turbidity detecting device | |
| CN100478656C (en) | Corelative offset type liquid-level detection method and apparatus | |
| CN111665173A (en) | Forward scattering type dust concentration measuring instrument | |
| CN110763305B (en) | Photoelectric liquid level measuring method | |
| CN207076183U (en) | Dirt concentration sensor and ultrasonic wave automatic sewage discharging device in a kind of ultrasonic wave recirculated water | |
| JP7112143B1 (en) | Liquid type discrimination sensor | |
| CN212514143U (en) | Forward scattering type dust concentration measuring instrument | |
| CN210400540U (en) | Optical liquid level sensor | |
| CN203745379U (en) | Handheld test paper reflectometer | |
| CN201166261Y (en) | Optical fiber probe for detecting transparent liquid cutoff | |
| CN219245785U (en) | Device for judging whether liquid exists in liquid inlet pipe of equipment | |
| CN220063823U (en) | Water quality detection system based on liquid level control |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| DD01 | Delivery of document by public notice |
Addressee: Qiao Ruilin Document name: Notice of amendment |
|
| DD01 | Delivery of document by public notice |
Addressee: Qiao Ruilin Document name: Notification that Application Deemed not to be Proposed |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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. |
|
| DD01 | Delivery of document by public notice |
Addressee: Yiwen Environmental Science Technology Co., Ltd. Document name: Notification of Passing Examination on Formalities |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Non-contact type detector and detecting method of liquid in pipe Effective date of registration: 20181123 Granted publication date: 20110413 Pledgee: Guangzhou Branch of Guangzhou Bank Co., Ltd. Pledgor: Yiwen Environmental Science Technology Co., Ltd. Registration number: 2018440000333 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20191209 Granted publication date: 20110413 Pledgee: Guangzhou Branch of Guangzhou Bank Co., Ltd. Pledgor: Yiwen Environmental Science Technology Co., Ltd. Registration number: 2018440000333 |