CN104614045A - Oil-water interface position measuring device - Google Patents
Oil-water interface position measuring device Download PDFInfo
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- CN104614045A CN104614045A CN201510069310.3A CN201510069310A CN104614045A CN 104614045 A CN104614045 A CN 104614045A CN 201510069310 A CN201510069310 A CN 201510069310A CN 104614045 A CN104614045 A CN 104614045A
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- array ccd
- oil
- line array
- water interface
- interface position
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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
Provided is an oil-water interface position measuring device. The oil-water interface position measuring device can measure a liquid level position of mixture liquid, in particular to an oil-water interface position, and the device plays an important role in chemistry and chemical engineering fields. The oil-water interface position measuring device comprises an LED light set, linear array CCD, a separating pipe, a stepping motor and a computer; the separating pipe is composed of a sealing pipe containing the LED light set and a sealing pipe containing the linear array CCD, and the two sealing pipes are fixedly connected with each other through a rigid connecting piece to enable the distance between the LED light set and the linear array CCD to remain unchanged; the stepping motor drives the linear array CCD to move up and down, light intensities of LED lights from different liquid level heights are received through the linear array CCD, and light intensity values received by the linear array CCD are displayed on the computer to determine the oil-water interface position. The measuring device is separated from the liquid by the separating pipe, the heat dissipation volume of components and parts is low, and the oil-water interface position measuring device is applicable to the measurement of flammable and combustible dangerous occasions.
Description
Technical field
The invention belongs to field of industrial measurement, relate to a kind of mixing material Interface detection device, particularly oil-water interface position measurement mechanism.
Background technology
Mixing material Interface detection, particularly water-oil interface detect and are widely used, as petrochemical complex, chemical, wastewater treatment etc.At present, oil-water interface position measurement mechanism on the market, utilizes the difference of the density of oil, water, specific inductive capacity, resistance to determine oil-water interface position.As utilized the difference of oil, water-mass density, the float of proper density being dropped in oil tank, the position of water-oil interface can be obtained by the position of code table reading float; Utilize the difference of oil, water refractive index, the fibre-optical probe of special refractive index is dropped in oil tank, namely may detect the position of water-oil interface.But mainly there are following three problems in existing water-oil interface measuring method: one is the phenomenon unavoidably occurring emulsification between oil reservoir and water layer, is difficult to find out clear and definite water-oil interface; Two is that throw-in type detector for oil-water interface device can produce the situation of adhesion with crude oil, makes measurement occur comparatively big error; Three is in inflammable and explosive occasion, and the measuring method such as electric capacity, electrode cannot use.
Summary of the invention
The present invention seeks to the above-mentioned defect overcoming the existence of existing oil-water interface position measuring method, the mixing material interface location measurement mechanism that a kind of detection speed is fast, measuring accuracy is high, usable range is wide, particularly a kind of oil-water interface position measurement mechanism are provided.
Technical scheme of the present invention is:
A kind of oil-water interface position measurement mechanism, comprise line array CCD, LED group, stepper motor, isolated tube and computing machine, described isolated tube is made up of the sealed tube of the sealed tube and accommodation line array CCD that hold LED group, two sealed tubes are connected and fixed by rigid connector, and the spacing of LED group and line array CCD is remained unchanged; Line array CCD and stepper motor link together, and stepper motor drives line array CCD to move up and down and measures different liquid level, and computing machine is connected with line array CCD, shows the light intensity value that CCD receives on computers, judges the position of water-oil interface.Line array CCD is placed in the sealed tube vertical with liquid level with LED group, line array CCD receives light and places facing to LED group, just to the light-emitting area of LED, stepper motor drives line array CCD to move up and down, line array CCD receives LED through the transmitted light of liquid, judges that material is oil reservoir or water layer by light intensity value.
Described stepper motor is positioned over above line array CCD, moves line array CCD move up and down by rope belt.Calculate line array CCD height in a liquid by the times of exercise of stepper motor, and then judge oil-water interface position.
Described LED is positioned in sealed tube, along placing one with the every 0.5cm of liquid level vertical direction.
The sealed tube of described accommodation LED is glass tube, and light transmission is good, and upper and lower port all seals, and only reserves power lead outlet, and does encapsulation process to power lead outlet.Ensure that LED completely cuts off with oil, water, after one-step installation, can use for a long time.
The sealed tube of described accommodation CCD is glass tube, and light transmission is good, upper end blow-by, and lower end seals, and ensures that stepper motor drives line array CCD to move steadily, and completely cuts off with oil, water.
Advantage of the present invention and beneficial effect are:
Calculate the height of line array CCD in oil tank by the times of exercise of stepper motor, and then judge oil-water interface position, highly sensitive, measuring accuracy can reach 0.1mm.Element heating amount is low, does not need separately to add heat abstractor, is applicable to inflammable and explosive occasion.
Structure of the present invention is simple, applied widely, is suitable for the detection at mixing material interface, and particularly oil-water interface position detects.By the position of stepper motor Long-distance Control line array CCD, by the transmitted light of computing machine observation water-oil interface, owing to using isolated tube measurement mechanism and liquid to be separated, be applicable to measurement that is inflammable and explosive or other dangerous situation.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure: 1, air; 2, oil reservoir; 3, water layer; 4, LED group; 5, isolated tube; 6, line array CCD; 7, stepper motor.
Embodiment
In order to more clearly understand specific works mode of the present invention, below in conjunction with accompanying drawing, the present invention is described in further detail.Before using measurement mechanism of the present invention, need the oil reservoir through leaving standstill and water layer, produce obvious layering, as in accompanying drawing, 1 is air, and 2 is oil reservoir, and 3 is water layer.
Described LED group 4, along placing a LED with the every 0.5cm of liquid level vertical direction, all LED are in parallel, and are welded on same substrate, and LED light emission direction is just to line array CCD 6.
Described isolated tube 5, comprise the sealed tube holding LED, the sealed tube holding line array CCD and web member, web member ensure that the distance in the process that line array CCD moves up and down between LED and line array CCD remains unchanged, and isolated tube remains invariant position, does not carry out any movement.
Described line array CCD receives the light from LED group, and line array CCD receives light and places, just to the light-emitting area of LED facing to LED group.Line array CCD is along placing with liquid level vertical direction, and pixel, along distributing with liquid level vertical direction, is beneficial to the light receiving different liquid level.
Described stepper motor 7 drives line array CCD to move up and down, when starting working, line array CCD is positioned at the above position of oil reservoir, by the mobile step number of calculated step motor, the present level of line array CCD can be calculated, by the light intensity value that computing machine observation line array CCD receives, the position of water-oil interface can be judged.
Claims (4)
1. an oil-water interface position measurement mechanism, it is characterized in that this device comprises LED group, line array CCD, isolated tube, stepper motor and computing machine, described isolated tube is made up of the sealed tube of the sealed tube and accommodation line array CCD that hold LED group, two sealed tubes are connected and fixed by web member, line array CCD and stepper motor link together, stepper motor drives line array CCD to move up and down and measures different liquid level, computing machine is connected with line array CCD, show the light intensity value that line array CCD receives on computers, judge the position of water-oil interface.
2. oil-water interface position measurement mechanism according to claim 1, is characterized in that the sealed tube of the sealed tube and accommodation line array CCD holding LED group is coupled together by rigid connector, the spacing of LED group and line array CCD is remained unchanged.
3. oil-water interface position measurement mechanism according to claim 1 and 2, it is characterized in that described line array CCD receives light and places facing to LED group, just to the light-emitting area of LED, and line array CCD pixel distribution arrangement is vertical with liquid level.
4. oil-water interface position measurement mechanism according to claim 1 and 2, is characterized in that described LED places one along the every 0.5cm in vertical fluid level direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510069310.3A CN104614045A (en) | 2015-02-11 | 2015-02-11 | Oil-water interface position measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510069310.3A CN104614045A (en) | 2015-02-11 | 2015-02-11 | Oil-water interface position measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104614045A true CN104614045A (en) | 2015-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510069310.3A Pending CN104614045A (en) | 2015-02-11 | 2015-02-11 | Oil-water interface position measuring device |
Country Status (1)
| Country | Link |
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| CN (1) | CN104614045A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105241523A (en) * | 2015-11-04 | 2016-01-13 | 成都南方电子仪表有限公司 | Radioactive waste resin interface measurement device and measurement method thereof |
| CN106128261A (en) * | 2016-08-12 | 2016-11-16 | 长江大学 | It is applicable to education experiment combination unit and using method thereof that oil-water interfaces measure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101387538A (en) * | 2008-10-29 | 2009-03-18 | 哈尔滨工程大学 | Linear array CCD transmission type liquid level measuring method and device |
| CN101509801A (en) * | 2009-03-16 | 2009-08-19 | 哈尔滨工程大学 | Intelligent light source linear array CCD liquid level measuring method and device |
| US20090299279A1 (en) * | 2006-10-07 | 2009-12-03 | Sanofi-Aventis Deutschland Gmbh | Optical determination of the position of the stopper in glass ampoules |
| CN102435259A (en) * | 2011-09-29 | 2012-05-02 | 哈尔滨工程大学 | Linear array CCD (Charge Coupled Device) liquid level measurement device with isolated gate and measurement method |
-
2015
- 2015-02-11 CN CN201510069310.3A patent/CN104614045A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090299279A1 (en) * | 2006-10-07 | 2009-12-03 | Sanofi-Aventis Deutschland Gmbh | Optical determination of the position of the stopper in glass ampoules |
| CN101387538A (en) * | 2008-10-29 | 2009-03-18 | 哈尔滨工程大学 | Linear array CCD transmission type liquid level measuring method and device |
| CN101509801A (en) * | 2009-03-16 | 2009-08-19 | 哈尔滨工程大学 | Intelligent light source linear array CCD liquid level measuring method and device |
| CN102435259A (en) * | 2011-09-29 | 2012-05-02 | 哈尔滨工程大学 | Linear array CCD (Charge Coupled Device) liquid level measurement device with isolated gate and measurement method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105241523A (en) * | 2015-11-04 | 2016-01-13 | 成都南方电子仪表有限公司 | Radioactive waste resin interface measurement device and measurement method thereof |
| CN106128261A (en) * | 2016-08-12 | 2016-11-16 | 长江大学 | It is applicable to education experiment combination unit and using method thereof that oil-water interfaces measure |
| CN106128261B (en) * | 2016-08-12 | 2022-01-25 | 长江大学 | Teaching experiment combination device suitable for oil-water interface determination and use method thereof |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150513 |