CN110595570B - Liquid level display device applying metal surface plasmons - Google Patents
Liquid level display device applying metal surface plasmons Download PDFInfo
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- CN110595570B CN110595570B CN201911011129.1A CN201911011129A CN110595570B CN 110595570 B CN110595570 B CN 110595570B CN 201911011129 A CN201911011129 A CN 201911011129A CN 110595570 B CN110595570 B CN 110595570B
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- 239000007788 liquid Substances 0.000 title claims abstract description 100
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 17
- 239000002184 metal Substances 0.000 title claims abstract description 17
- 239000002923 metal particle Substances 0.000 claims abstract description 32
- 238000007789 sealing Methods 0.000 claims abstract description 9
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 12
- QGJOPFRUJISHPQ-UHFFFAOYSA-N Carbon disulfide Chemical compound S=C=S QGJOPFRUJISHPQ-UHFFFAOYSA-N 0.000 claims description 12
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 abstract description 4
- 238000011031 large-scale manufacturing process Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 20
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 10
- 239000000149 chemical water pollutant Substances 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000003860 storage Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000005086 pumping Methods 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000013528 metallic particle Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 238000000855 fermentation Methods 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
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- 210000003462 vein Anatomy 0.000 description 1
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Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/284—Electromagnetic waves
- G01F23/292—Light, e.g. infrared or ultraviolet
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Mechanical Light Control Or Optical Switches (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
Abstract
The invention relates to a liquid level display device applying metal surface plasmons, which comprises a U-shaped main body, wherein a pressure diaphragm is arranged in the middle of the bottom surface of the U-shaped main body and divides the U-shaped main body into a sealing cavity and a liquid through cavity; high-refractive-index liquid is sealed in the sealing cavity, and nano metal particles are arranged on the inner wall of the vertical part of the sealing cavity; this liquid level display device, simple structure, preparation simple process, the large-scale production preparation of being convenient for sets up nano metal particle through the inner wall at the U-shaped main part, selects the light that nano metal particle reflects through high refractive index liquid to make nano metal particle's colour change in liquid level department, make the demonstration of liquid level more clear, be convenient for observe the liquid level.
Description
Technical Field
The invention belongs to the technical field of liquid display, and particularly relates to a liquid level display device applying metal surface plasmons.
Background
There are many places in life where substances in a liquid state need to be used, and therefore the amount of liquid needs to be monitored many times. For example, liquid storage devices are widely used in various fields of production and life for storing various liquids. Liquid storage equipment is often provided with a liquid level display device so that the volume of liquid stored in the equipment can be known and certain operations can be performed according to the indication of the liquid level display device. However, most of the existing liquid level display devices adopt the schemes of single communicating vessels, sensors and the like, and have the problems of complex installation and inconvenient visual liquid level observation.
For another example, the domestic garbage contains a large amount of biodegradable organic matters, and under appropriate environmental conditions, a large amount of landfill gas can be generated through the action of microorganisms (anaerobic fermentation), and the main components of the landfill gas comprise methane, carbon dioxide, oxygen and nitrogen, and other trace gases. The landfill gas has the largest content of methane, the methane is a flammable and explosive gas, and when the concentration of the methane in the air reaches 5-15%, the methane can explode when meeting electric sparks or other ignition sources. If the landfill gas migrates to other sites and mixes with air, methane-air mixture gas with a concentration in the explosive range is formed, and there is also a possibility of causing explosion and fire accidents. The landfill gas also contains a small amount of toxic gas, such as hydrogen sulfide, mercaptan ammonia and the like, which has toxic action on people, livestock and plants. Therefore, the landfill gas always poses a threat to the safety and environmental protection of the surroundings, and the landfill gas must be effectively controlled. For larger garbage stacks, it is often necessary to construct a number of collection wells for collecting and draining landfill gas, collecting combustible gas therein, and disposing of harmful gases. The landfill body also can produce a large amount of landfill leachate in the production landfill gas, and landfill leachate can reduce the gas production of landfill gas, in order to reduce landfill leachate to the influence of gas production, need timely extract landfill leachate and discharge away. In addition, the leachate is a necessary condition for anaerobic fermentation, and the garbage leachate is not required to be pumped and drained completely. Because the landfill leachate is not like underground water and does not have relatively stable water veins, the pumping equipment does not need to be started in real time, and pumping is needed only when the liquid level of the landfill leachate is higher and the collection and pumping of landfill gas are greatly influenced. The landfill gas collecting well is a relatively closed system, the value of the liquid level to the ground is required to be fed back, the simple liquid level height cannot meet the calculation requirement, the height of the percolate liquid to the ground can feed back the use condition of the gas collecting well, and the value is determined when water pumping is stopped. Therefore, a method for measuring the height of percolate and converting the height of the percolate into the height of the liquid level above the ground is needed. At present, the monitoring of the landfill leachate mainly depends on a water level sensor, however, the landfill leachate has complex components and stronger corrosivity, and equipment such as the water level sensor with higher sensitivity is easy to damage.
Therefore, how to better monitor the liquid level is particularly important in life.
Disclosure of Invention
In view of the above problems, it is an object of the present invention to provide a liquid level display device using a metal surface plasmon.
Therefore, the invention provides a liquid level display device applying metal surface plasmons, which comprises a U-shaped main body, wherein a pressure diaphragm is arranged in the middle of the bottom surface of the U-shaped main body and divides the U-shaped main body into a sealing cavity and a liquid through cavity; high-refractive-index liquid is sealed in the sealing cavity, and nano metal particles are arranged on the inner wall of the vertical part of the sealing cavity.
The liquid passing cavity is an opening cavity, and one end of the opening of the liquid passing cavity is provided with a connecting external thread.
And a connecting seat is also arranged below the connecting external thread.
And a clamping groove is formed in the connecting seat.
The metal particles are uniformly distributed on the inner wall of the sealed cavity.
The spacing between the metal particles is 1nm to 20 nm.
The radius of the metal particles is 40 nm-80 nm.
The metal particles are made of silver.
The pressure diaphragm is made of elastic rubber.
The high-refractive-index liquid is benzene liquid or carbon disulfide liquid.
The invention has the beneficial effects that: the liquid level display device applying the metal surface plasmons has the advantages of simple structure and simple manufacturing process, is convenient for large-scale production and manufacturing, and can change the color of the nano metal particles at the liquid level by arranging the nano metal particles on the inner wall of the U-shaped main body and selecting the light reflected by the nano metal particles through the high-refractive-index liquid, so that the liquid level is displayed more clearly and the liquid level is convenient to observe.
Drawings
Fig. 1 is a schematic structural view of a liquid level display device using a metal surface plasmon.
FIG. 2 is a schematic view of the structure of one end of the opening of the drainage lumen.
FIG. 3 is a schematic diagram of the scattering spectra of nano-metal particles with different radii in a high refractive index liquid.
FIG. 4 is a schematic diagram of the scattering spectra of the nano-metal particles in high refractive index liquids of different refractive indices.
In the figure: 1. a U-shaped body; 2. sealing the cavity; 3. a liquid cavity is communicated; 4. a pressure diaphragm; 5. a nano-metal particle; 6. connecting external threads; 7. a connecting seat; 71. a card slot; 8. a high refractive index liquid.
Detailed Description
To further explain the technical means and effects of the present invention adopted to achieve the intended purpose, the following detailed description of the embodiments, structural features and effects of the present invention will be made with reference to the accompanying drawings and examples.
Example 1
The embodiment provides a liquid level display device applying metal surface plasmons as shown in fig. 1 and fig. 2, which comprises a U-shaped main body 1, wherein a pressure diaphragm 4 is arranged in the middle of the bottom surface of the U-shaped main body 1, and the U-shaped main body 1 is divided into a sealing cavity 2 and a liquid through cavity 3 by the pressure diaphragm 4; the sealed cavity 2 is sealed with high-refractive-index liquid 8, and the inner wall of the vertical part of the sealed cavity 2 is provided with nano metal particles 5; lead to the sap cavity 3 and be a mouthful cavity, the liquid that awaits measuring can get into leads to the sap cavity 3, thus, the liquid that awaits measuring just is in pressure diaphragm 4's both sides respectively with high refractive index liquid 8, pressure diaphragm 4 receives the pressure of the high refractive index liquid 8 in sealed chamber 2 and is fixed, because the liquid level height of the liquid that awaits measuring is different, just so different to pressure diaphragm 4's pressure, thus, under the extrusion of two kinds of liquid, the atress equilibrium state that pressure diaphragm 4 was located is different, make the liquid level height of high refractive index liquid 8 in sealed chamber 2 different, the not co-altitude nano metal particle 5 that sets up on the vertical portion's of sealed chamber 2 when being in high refractive index liquid 8, the colour that presents changes, be favorable to carrying out the observation of liquid level.
Furthermore, one end of the opening of the liquid through cavity 3 is provided with a connecting external thread 6 so as to be conveniently communicated with a storage vessel of liquid to be detected, and therefore liquid level detection and display are carried out.
Further, the connecting base 7 is further arranged below the connecting external thread 6, the communicating state of the liquid level display device and a storage vessel of liquid to be detected can be limited under the action of the connecting base 7, and unlimited rotation is avoided, so that the external thread 6 is separated from the connecting state.
Further, be provided with draw-in groove 71 on the connecting seat 7, like this, can carry out the UNICOM through draw-in groove 71 and the storage household utensils of surveying liquid, also can further inject the UNICOM state to liquid level display device and the storage household utensils of the liquid that awaits measuring to the leakproofness of junction is avoided spilling to the better assurance.
Furthermore, the metal particles 5 are uniformly distributed on the inner wall of the sealed cavity 2; the distance between the metal particles 5 is 1 nm-20 nm, preferably 5nm, 10nm, 15nm and the like; the spacing between the metal particles 5 is less than 20nm, and when a liquid is between two particles, the effect on the resonance wavelength is greater, and the change in the displayed color is greater, which is easier to observe.
Further, the radius of the metal particles 5 is 40nm to 80 nm; thus, the resonance wavelength of light can be controlled in the visible light region.
Further, the metal particles 5 are made of silver.
Further, the pressure diaphragm 4 is made of elastic rubber.
Further, the refractive index of the high refractive index liquid 8 is 1-2, such as benzene liquid or carbon disulfide liquid; the refractive indexes of the benzene liquid and the carbon disulfide liquid are both more than 1.5. FIG. 3 is a schematic view showing the scattering spectrum of incident light having a wavelength of 0 to 1000nm in the same high refractive index liquid when the radius of the nano-metal particles 5 is 40nm, 50nm, 60nm, 70nm, 80nm, and it can be seen that the scattering rate is the highest when the frequency of the incident light is 400 nm; FIG. 4 is a schematic view showing a scattering spectrum of incident light having a wavelength of 0 to 1000nm when the refractive index of the high refractive index liquid is 1 or 2 at a radius of the nano metal particles of 50nm, and it can be seen that light having the highest dispersion index of the incident light is changed from light having a wavelength of 400nm to light having a wavelength of 540nm when the refractive index of the refractive index liquid is increased from 1 to 2.
Furthermore, the radius of the nano-metal particles 5 varies along the inner wall, i.e. the radius of the nano-metal particles 5 is not the same. Thus, the color changes along the direction of the inner wall. When the high refractive index liquid 8 is present around the nano-metal particles 5, the color changes abruptly, so that the liquid level is more easily recognized by the observer.
To sum up, this liquid level display device, simple structure, preparation simple process, the large-scale production preparation of being convenient for sets up nanometer metallic particle 5 through the inner wall at U-shaped main part 1, selects the light that nanometer metallic particle 5 reflects through high refractive index liquid 8 to make nanometer metallic particle 5's colour change in liquid level department, make the demonstration of liquid level more clear, be convenient for observe the liquid level.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (8)
1. The utility model provides an use liquid level display device of metal surface plasmon which characterized in that: the device comprises a U-shaped main body (1), wherein a pressure diaphragm (4) is arranged in the middle of the bottom surface of the U-shaped main body (1), and the U-shaped main body (1) is divided into a sealing cavity (2) and a liquid through cavity (3) by the pressure diaphragm (4); high-refractive-index liquid (8) is sealed in the sealed cavity (2), and nano metal particles (5) are arranged on the inner wall of the vertical part of the sealed cavity (2);
wherein the radius of the metal particles (5) is 40 nm-80 nm, and the distance between adjacent metal particles (5) is 1 nm-20 nm.
2. The liquid level display device using metal surface plasmons of claim 1, wherein: the liquid passing cavity (3) is an open cavity, and one end of the opening of the liquid passing cavity (3) is provided with a connecting external thread (6).
3. The liquid level display device using metal surface plasmons as claimed in claim 2, wherein: and a connecting seat (7) is also arranged below the connecting external thread (6).
4. A liquid level display device using metal surface plasmons as claimed in claim 3, wherein: and a clamping groove (71) is formed in the connecting seat (7).
5. The liquid level display device using metal surface plasmons of claim 1, wherein: the metal particles (5) are uniformly distributed on the inner wall of the sealed cavity (2).
6. The liquid level display device using metal surface plasmons of claim 1, wherein: the metal particles (5) are made of silver.
7. The liquid level display device using metal surface plasmons of claim 1, wherein: the pressure diaphragm (4) is made of elastic rubber.
8. The liquid level display device using metal surface plasmons of claim 1, wherein: the high-refractive-index liquid (8) is benzene liquid or carbon disulfide liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911011129.1A CN110595570B (en) | 2019-10-23 | 2019-10-23 | Liquid level display device applying metal surface plasmons |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911011129.1A CN110595570B (en) | 2019-10-23 | 2019-10-23 | Liquid level display device applying metal surface plasmons |
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| Publication Number | Publication Date |
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| CN110595570A CN110595570A (en) | 2019-12-20 |
| CN110595570B true CN110595570B (en) | 2021-05-18 |
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Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191328861A (en) * | 1913-12-15 | 1914-11-05 | Harry Allsop Dudgeon | Improvements the Quantity or Level of Liquid in the Petrol Tanks of Motor Cars and the like. |
| GB142597A (en) * | 1919-03-08 | 1920-05-13 | Arthur Edward Hyne | Means for indicating the level of a liquid |
| GB418311A (en) * | 1933-04-26 | 1934-10-23 | Bernard Broakes Carter | Improvements in and relating to liquid level gauges, manometers, and like devices |
| GB1245995A (en) * | 1968-11-26 | 1971-09-15 | Robert Colin Pearson | Liquid level sensing means and installations provided with such means |
| US4213338A (en) * | 1979-02-21 | 1980-07-22 | General Electric Company | Liquid level indicator |
| CN2096057U (en) * | 1990-11-30 | 1992-02-12 | 唐曾乐 | Winding type u-tube liquid pressure gauge |
| CN202133436U (en) * | 2011-06-29 | 2012-02-01 | 芜湖乐佳电器有限公司 | Water level sensor |
| CN103196621B (en) * | 2013-03-14 | 2015-02-25 | 北京交通大学 | Anti-overflow device of magnetic liquid micro differential pressure transducer |
| CN203719734U (en) * | 2014-03-12 | 2014-07-16 | 铁岭经济开发区华能仪器仪表有限公司 | Guided wave radar high-medium-low pressure double-color water gauge |
| CN105157786B (en) * | 2015-06-02 | 2018-10-12 | 广州市心德实业有限公司 | Differential pressure levelmeter with fluid isolation device |
| CN105866070A (en) * | 2016-05-27 | 2016-08-17 | 哈尔滨工程大学 | Distributed liquid refractive index sensing device based on optical fiber surface plasma resonance |
| CN106123997A (en) * | 2016-08-30 | 2016-11-16 | 四川盛杰低温设备制造股份有限公司 | Liquid level sensor |
| CN207113966U (en) * | 2017-08-31 | 2018-03-16 | 北京金隅琉水环保科技有限公司 | A kind of liquid level gauge and crystallizer |
| CN207147584U (en) * | 2017-09-05 | 2018-03-27 | 杭州富阳凯尔化工有限公司 | A kind of liquid level detection device |
| CN108169171B (en) * | 2017-12-08 | 2020-12-25 | 苏州大学 | Refractive index test based on surface plasmon resonance and manufacturing method thereof |
| CN109115300B (en) * | 2018-08-06 | 2020-04-07 | 重庆恒中能源装备有限公司 | Anti-seismic U-shaped tube of remote liquid level meter |
| CN109163776B (en) * | 2018-10-10 | 2019-12-27 | 厦门大学 | Measurement method based on nano metal hole array |
| CN110174157A (en) * | 2019-06-13 | 2019-08-27 | 钱勇国 | A kind of water level sensor of modularization operation easy to produce |
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