CN207396267U - In the device of different pressure down regulation gas dissolved water saturation degrees - Google Patents
In the device of different pressure down regulation gas dissolved water saturation degrees Download PDFInfo
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- CN207396267U CN207396267U CN201721154830.5U CN201721154830U CN207396267U CN 207396267 U CN207396267 U CN 207396267U CN 201721154830 U CN201721154830 U CN 201721154830U CN 207396267 U CN207396267 U CN 207396267U
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Abstract
A kind of device in different pressure down regulation gas dissolved water saturation degrees, including closing catch basin；Liquid circulation module provides circulating liquid for the closing catch basin；Germicidal efficacy module, the experimental bench including being configured to place sample, the Germicidal efficacy module connect the catch basin and liquid circulation module respectively；Measurement and the modular pressure for adjusting gas pressure intensity are arranged at the top of closing catch basin；Concentration of dissolved gas measurement module is configured to oxygen content in measurement closing water storage tank liquid；Gas circulation module connects the top and bottom of closing catch basin by pipeline respectively, and the air closed at the top of catch basin is pumped into the liquid of bottom；And sink height adjustment module.Pass through the device of the utility model, realize the regulation and control to gas dissolved water saturation degree, the gas pressure intensity on water surface top is adjusted by modular pressure, by sink height adjustment module adjustment relative liquid surface and sample relative altitude, control saturation degree state keeps stablizing or generating variation.
Description
Technical field
The utility model is related to technical field-flow field control field, particularly relate to it is adjustable in environmental stress,
The dissolved gas saturation degree of water carries out long-time, the device of high-precision control in stream field.
Background technology
In order to study under different pressure, gas dissolved water saturation degree (current gas concentration of ordinary dissolution and saturation shape in water
The ratio of state concentration) influence to micro nano surface structure imbibition characteristic is, it is necessary under quantitative pressurization (decompression), quantitative regulation and control water
Middle dissolved gas saturation degree, and saturation degree is kept to stablize for a long time.Under normal circumstances, gas dissolved water always tends to
In reaching dissolving saturation state：(dissolved gas is unsaturated), the gas meeting contacted with water when dissolved gas saturation degree is less than 1
Tend to dissolve into water；When dissolved gas saturation degree is more than 1 (dissolved gas supersaturation), extra dissolved gas is inclined in water
To in being precipitated and generate bubble.Therefore, it is difficult to realize by existing equipment under different pressure, adjusts gas dissolved water saturation
It spends and keeps for a long time.
The content of the invention
In consideration of it, the utility model aim be to provide it is a kind of in different pressure down regulation gas dissolved water saturation degrees
Device, to solve at least part technical problem described above.
The utility model provides a kind of device in different pressure down regulation gas dissolved water saturation degrees, including：
Catch basin is closed, including inlet and liquid outlet；
Liquid circulation module is connected with the inlet, to provide circulating liquid for the closing catch basin；
Germicidal efficacy module, the experimental bench including being configured to place sample, the Germicidal efficacy module connects described respectively
Liquid outlet and liquid circulation module, so that closing catch basin, liquid circulation module and Germicidal efficacy module form a liquid circulation
Circuit；
Measurement and the modular pressure for adjusting gas pressure intensity are arranged at the top of closing catch basin；
Concentration of dissolved gas measurement module is configured to oxygen content in measurement closing water storage tank liquid；
Gas circulation module is connected the top and bottom of closing catch basin by pipeline, will close water storage groove top respectively
The air in portion is pumped into the liquid of bottom；And
Adjust liquid level and the sink height adjustment module of laboratory sample relative altitude in closing catch basin.
In a further embodiment, the modular pressure includes load cell.
In a further embodiment, the modular pressure further includes pressurized equipment and/or pressure regulating equipment.
In a further embodiment, the pressurized equipment is forced air bottle, and the pressure regulating equipment is vacuum pump.
In a further embodiment, the concentration of dissolved gas measurement module is arranged at the bottom of closing catch basin,
Including the dissolved oxygen sensing instrument in closing water storage tank liquid can be stretched into.
In a further embodiment, the gas circulation module includes that the air pump closed at the top of catch basin can be arrived
Cycling air pump in the liquid of bottom.
In a further embodiment, sink height adjustment module includes horizontal platform and lifting platform, and the horizontal platform is set
The closing reservoir bases are placed in play a supportive role, the lifting platform is connected with the horizontal platform and to adjust lifting platform
The lifting of upper closing catch basin.
In a further embodiment, the liquid circulation module includes fluid discharge pump and/or flowmeter.
In a further embodiment, the Germicidal efficacy module further includes observation device, and the observation device includes
Microscope and/or video camera；The height of shown experimental bench is less than the height of the closing catch basin liquid level.
In a further embodiment, it is provided with the first cut-off between the liquid circulation module and closing catch basin
Valve；The second shut-off valve is provided between the closing catch basin and Germicidal efficacy module.
Through the above technical solutions, the device in different pressure down regulation gas dissolved water saturation degrees of the utility model
The advantageous effect played is：
(1) by the device of the utility model, the regulation and control to gas dissolved water saturation degree can be realized, by modular pressure
The gas pressure intensity on water surface top is adjusted, by sink height adjustment module adjustment relative liquid surface and sample relative altitude, controls saturation
Degree state keeps stablizing or generating variation；
(2) can dissolved oxygen concentration be measured by concentration of dissolved gas measurement module, calculates dissolved gas saturation degree.
Description of the drawings
Fig. 1 is the signal of the device in different pressure down regulation gas dissolved water saturation degrees of the utility model embodiment
Figure.
Fig. 2 is the schematic cross-section that catch basin is closed in the utility model embodiment.
Fig. 3 is the schematic cross-section of Germicidal efficacy module in the utility model embodiment.
Fig. 4 is the sample top view of one specific embodiment of the utility model.
Specific embodiment
For the purpose of this utility model, technical solution and advantage is more clearly understood, below in conjunction with specific embodiment, and
Referring to the drawings, the utility model is described in further detail.
In this application, " top " refers to be located at the certain space of the whole top in space (such as closing catch basin) in container
In general position is needed after catch basin injection liquid is closed, positioned at the top of liquid；" bottom " refers to be located at empty in container
Between (such as closure tip catch basin) whole lower section certain spatial position, in general need when closing catch basin injection liquid
After body, positioned at the lower section of liquid.
In view of the prior art is difficult to realize under different pressure, adjusts gas dissolved water saturation degree and keep for a long time,
The utility model embodiment is to provide one kind in different pressure down regulation gas dissolved water saturation degrees, and can cause water
Middle dissolved gas saturation degree keeps stable device for a long time.
Fig. 1 is the signal of the device in different pressure down regulation gas dissolved water saturation degrees of the utility model embodiment
Figure.As shown in Figure 1, the utility model embodiment provides a kind of quantitative pressure, quantitatively regulating and controlling gas dissolved water saturation degree is simultaneously
Stable device is kept for a long time.The device in different pressure down regulation gas dissolved water saturation degrees, the device are whole
Closing, including：Close catch basin 14, modular pressure 15, concentration of dissolved gas measurement module 16, gas circulation module 12, sink
Highly adjust module 13, liquid circulation module 18, Germicidal efficacy module 19, shut-off valve 20.
Wherein, closing catch basin 14 includes inlet and liquid outlet；Liquid circulation module 18 is connected with the inlet, with
Circulating liquid is provided for closing catch basin 14；Germicidal efficacy module 19 includes being configured to the experimental bench for placing sample, Germicidal efficacy
Module 19 connects liquid outlet and liquid circulation module 18 respectively, so that closing catch basin 14, liquid circulation module 18 and experiment are seen
It examines module 19 and forms a liquid circulation loop；The modular pressure 15 of measurement gas pressure intensity is arranged at the top of closing catch basin 14；
Concentration of dissolved gas measurement module 16 is configured in measurement closing catch basin 14 oxygen content in liquid；Gas circulation module 12 is logical
Piping connects the top and bottom of closing catch basin respectively, and the air for closing 14 top of catch basin is pumped into the liquid of bottom
In；And adjust the sink height adjustment module 13 of the relative altitude in closing catch basin 14.
Fig. 2 is the amplification schematic cross-section that catch basin is closed in Fig. 1.In some embodiments, closing catch basin 31 can be with
It is manufactured by acrylic board, acrylic board thickness 1cm, closing catch basin 31 is in the cuboid of 10cm*10cm*50cm.Close water storage
5 outlets are opened on 31 wall surface of slot, are 35 gas outlet 34 of air inlet being connected with gas circulation module 12 respectively, with modular pressure 15
Connected air pressure adjustment mouth 38, with liquid circulation module 18, the connected liquid outlet 37 of experimental observation module 19, inlet 36.
Wherein, for closing catch basin 14 in liquid, can be it is well known in the prior art it is various being capable of dissolved gas
Liquid, preferred liquid be water.
In some embodiments, modular pressure 15 is connected to the top of closing catch basin 14, provides closing catch basin 14 and pushes up
The gas pressure intensity in portion, and real-time barometric surveying is carried out, ensure that air pressure is constant in experimentation.Modular pressure 15 is passed including pressure measurement
Sensor.The load cell feeds back to pressure signal for measuring the pressure of gas more than closing 14 liquid level of catch basin
One processor is adjusted with pressurize either pressurizeing according to the pressure value of detection, can be affixed on closing 14 inner wall of catch basin,
Above liquid.
In some embodiments, modular pressure 15 further includes pressurized equipment and/or pressure regulating equipment.Wherein, pressurized equipment can
Pressurized cylinder is thought, by pipeline connection to catch basin 14 is closed, for when the pressure value of detection is less than predetermined value, being passed through
Gas, to improve pressure；Wherein, pressure regulating equipment is vacuum pump, for when the pressure value of detection is more than predetermined value, vacuum pump to pump
Go out portion gas, to reduce the pressure inside closing catch basin 14.
In some embodiments, concentration of dissolved gas measurement module 16 is arranged at the bottom of closing catch basin, including that can stretch
Enter to close the dissolved oxygen sensing instrument in 14 liquid of catch basin.Oxygen content in water is measured by dissolved oxygen sensing instrument, and passes through water
Whether the gas dissolving process in middle oxygen content monitoring water reaches balance, and calculates dissolved gas saturation degree.
As shown in Fig. 2, in some embodiments, dissolved oxygen sensing instrument 33 is main for concentration of dissolved gas measurement module 16
Equipment, sensor probe stretches into closing catch basin 31, molten in the water at liquid outlet for measuring near liquid outlet 37
Solve oxygen concentration.Dissolved oxygen sensing instrument 33 has sealing ring with 31 junction of closing catch basin, ensures closing catch basin air-tightness.
In whole experiment process, it all should ensure that liquid level 32 is slightly above liquid outlet 37 and dissolved oxygen sensing instrument 33.In some embodiments, seal
It closes catch basin 14 by soft pipeline with liquid circulation module 18 and Germicidal efficacy module 19 to be connected, closes and filled in catch basin 14
There is water, there is a certain amount of air above liquid bulk, be liquid filled in liquid circulation module 18 and Germicidal efficacy module 19.
Liquid circulation module 18 provides the flowing of stable, controllable flow velocity for whole system.
In some embodiments, Germicidal efficacy module 19 include experimental bench, for disposing sample to be measured, and pass through as
The equipment such as microscope, video camera are monitored the sample state in experimentation.
As shown in figure 3, in some embodiments, inlet 41 passes through pipeline and going out on closing catch basin shown in Fig. 2
Liquid mouth 37 is connected, and liquid outlet 46 is connected by pipeline with the inlet 36 of Fig. 2.Experimental bench 42 is the sealing stream of acrylic manufacture
Road, runner long 85mm, wide 15mm, high 1.5mm, sample 45 are pasted onto the bottom of runner, and sample surface is stained with plating for one
There is the form 44 of the coverslip of antireflection film, camera lens 43 observes sample 45 in different pressure, different water by form 44
The evolution of dissolved gas saturation degree lower surface gas-bearing formation.
In some embodiments, gas circulation module 12 connects the top and bottom of closing catch basin 14 by pipeline, will
The air pump at 14 top of catch basin is closed into the water of bottom, air and water is made sufficiently to be mutually mixed.Wherein, gas circulation mould
Block 12 includes Xun Huan air pump and is connected to the pipeline of 14 top and bottom of closing catch basin.Such as shown in Fig. 2, gas circulation module
12 are connected with closing 35 gas outlet 34 of air inlet of catch basin.
In some instances, sink height adjustment module 13 is connected to the outside of closing catch basin 14, and closing is adjusted and stores
Relative altitude in sink 14 in liquid level and Germicidal efficacy module 19 between sample (being similar to experimental bench height).Some embodiments
In, the height of experimental bench is less than the height for closing 14 liquid level of catch basin.
Preferably, the lifting platform that sink height adjustment module 13 includes horizontal platform and is connected on closing catch basin 14.Water
Platform is arranged at the closing reservoir bases to play a supportive role, and the lifting platform is connected with the horizontal platform and to adjust
The lifting of catch basin is closed on lifting platform.
In some instances, liquid circulation module 18 includes that the flow pump and flowmeter of regime flow can be provided.Flow
Pump is for closing 14 pumping liquid of catch basin, flowmeter to be used to monitor the uninterrupted of liquid.
Hereinafter, will concrete explanation be carried out to the principle and service condition of above device by a specific embodiment.
In actual application process, for quantitative pressure, quantitatively regulating and controlling gas dissolved water saturation degree is simultaneously protected for a long time
It is fixed to keep steady, and is first shut off two shut-off valves, the first shut-off valve 20 and the second shut-off valve 21, and is added in catch basin 14 is closed
Suitable water so that when water is full of entire fluid circulation system, closes liquid level in catch basin 14 and do not had concentration of dissolved gas just
Measurement module 16 and reservoir bases liquid outlet.
The gas pressure intensity p on water surface top in the adjustment closing catch basin 14 of modular pressure 15a, and monitored in real time, make gas
Pressure keeps stablizing.Gas circulation module 12 is opened, the gas for closing 14 top of catch basin is pumped from the gas outlet of reservoir bases
Enter in water, while concentration of dissolved gas measurement module 16 is observed and records air content in water.Due to closing here in catch basin 14
Liquid it is relatively low shallow, and there is gas circulation module 12 to be constantly pumped into gas into water, the sink upper gas and water made
It is sufficiently mixed, when air content remains unchanged for a long time in the water that measurement of concetration module 16 observes, closes water in catch basin 14
Concentration of dissolved gas reaches dissolution equilibrium (i.e. saturation) with overhead gas at face, due to being sufficiently mixed, so entire water body is molten
Gas concentration is solved uniformly and equal to the concentration of dissolved gas at the water surface.Since when temperature-resistant, gas dissolved water saturation is dense
Degree is proportional to local pressure, and local pressure is by air pressure p above the water surfaceaIt is formed with hydrostatic pressure, therefore gas dissolved water is satisfied
It is associated with the depth of water with spending.
Adjust sink height adjustment module 13, adjust in closing catch basin 14 liquid level and sample in Germicidal efficacy module 19 it
Between relative altitude H, it is specified that when liquid level is higher than sample in Germicidal efficacy module 19 in catch basin 14, H is positive value.It is at this point, slow
It is slow to open the first shut-off valve 20 and the second shut-off valve 21, and modular pressure 15 is adjusted, make 14 top air pressure p of closing catch basinaIt protects
It holds constant.
Liquid circulation module 18 is opened, water is made not have the sample in Germicidal efficacy module 19 full of entire runner, and carry out
Experiment.
A specific experiment is enumerated to illustrate, if Fig. 4 shows, micron cylindrical hole is regularly arranged on silicon chip, each in figure is justified
Represent a micron cylindrical hole.50 microns of cylinder bore diameter, 40 microns of depth.The silicon chip passes through hydrophobic treatment, and submergence is under water
When, gas can be retained in micropore so that water will not enter micropore.Experimental situation under water is seen using laser confocal microscope
It surveys under different pressure, influence of the gas dissolved water saturation degree to micro-structure Mesosphere.
According to Henry's law, saturation concentration of dissolved gas is proportional to partial pressure, i.e. c in liquid*=(pL-, pV)/kH,
Middle c*For saturation concentration of dissolved gas, kHFor the Henry'S coefficient of gas, pLFor localized liquid stagnation pressure, pVFor saturated vapour pressure.Dissolving
The definition of gas saturation is s=c/c*, wherein c is real-time local dissolution gas concentration.As it was noted above, entire water body mixes
It closes uniformly, concentration of dissolved gas is equal to the concentration of dissolved gas at the water surface, is denoted as c=ca, according to Henry's law, it is proportional to envelope
Close the partial pressure (p of 14 top dry gas of catch basina-pV), i.e. ca=(pa-pV)/kH.And for laboratory sample at, local water
It presses as pL=pa+ ρ gH, therefore gas degree of dissolution saturation s can be obtained by lower formula in water：
S=1- ρ gH/ (ρ gH+pa-pV)
Wherein, ρ is water density 1000kg/m3, g is acceleration of gravity 9.8m/s2, H is liquid level and reality in closing catch basin 14
Test the relative altitude between sample, p in Observation Blocks 19aFor the gas pressure intensity on water surface top in closing catch basin 14, pVIt is full
And vapour pressure, about 3kPa at room temperature.
According to above-mentioned formula, in this experimental provision in the case where keeping the abundant convection current of water body, gas dissolved water is satisfied
With degree s by the gas pressure intensity p on water surface top in closing catch basin 14aRegulate and control with relative altitude H：When H is constant, paBigger, s is got over
It is small；In paWhen constant, H is bigger, and s is smaller；When H is positive value (sample is less than liquid level), s ＜ J are that is, unsaturated；(sample when H is negative value
Product are higher than liquid level), s ＞ 1 are that is, supersaturated.
In addition it is also possible to pass through concentration of dissolved gas measurement module 16.The data that note dissolved oxygen sensing instrument detects are cox,
Due to the proportions constant of dissolved oxygen, then the value is proportional to concentration of dissolved gas c always.Therefore we can use dissolved oxygen saturation degree
Directly calculate dissolved gas saturation degree, i.e. s=c/c*=cox/cox *, wherein cox *For saturated dissolved oxygen gas concentration.According to Henry
Law, cox *=(pL-pV)/kH, ox, wherein kH, ox=11.7LkPa/mg is the Henry'S coefficient of oxygen.Therefore, we can obtain
It is to dissolved gas saturation degree
Therefore, we can be by measuring dissolved oxygen concentration coxTo calculate dissolved gas saturation degree s.
Particular embodiments described above has carried out into one the purpose of this utility model, technical solution and advantageous effect
Step is described in detail, it should be understood that the foregoing is merely specific embodiment of the utility model, are not limited to this reality
With new, within the spirit and principle of the utility model, any modification, equivalent substitution, improvement and etc. done should all include
Within the scope of protection of the utility model.
Claims (10)
1. a kind of device in different pressure down regulation gas dissolved water saturation degrees, it is characterised in that including：
Catch basin is closed, including inlet and liquid outlet；
Liquid circulation module is connected with the inlet, to provide circulating liquid for the closing catch basin；
Germicidal efficacy module, the experimental bench including being configured to place sample, the Germicidal efficacy module connect respectively it is described go out liquid
Mouth and liquid circulation module, so that closing catch basin, liquid circulation module and Germicidal efficacy module form a liquid circulation loop；
Measurement and the modular pressure for adjusting gas pressure intensity are arranged at the top of closing catch basin；
Concentration of dissolved gas measurement module is configured to oxygen content in measurement closing water storage tank liquid；
Gas circulation module is respectively connected at the top and bottom of closing catch basin by pipeline, will closed at the top of catch basin
Air is pumped into the liquid of bottom；And
Adjust liquid level and the sink height adjustment module of laboratory sample relative altitude in closing catch basin.
2. the apparatus according to claim 1, which is characterized in that the modular pressure includes load cell.
3. the apparatus of claim 2, which is characterized in that the modular pressure further includes pressurized equipment and/or decompression
Equipment.
4. device according to claim 3, which is characterized in that the pressurized equipment is forced air bottle, and the decompression is set
Standby is vacuum pump.
5. the apparatus according to claim 1, which is characterized in that the concentration of dissolved gas measurement module is arranged at closing and stores
The bottom of sink, including the dissolved oxygen sensing instrument in closing water storage tank liquid can be stretched into.
6. the apparatus according to claim 1, which is characterized in that the gas circulation module includes that water storage groove top can will be closed
The air pump in portion is to the cycling air pump in the liquid of bottom.
7. the apparatus according to claim 1, which is characterized in that sink height adjustment module includes horizontal platform and lifting platform,
The horizontal platform is arranged at the closing reservoir bases to play a supportive role, and the lifting platform is connected with the horizontal platform and is used in combination
To adjust the lifting that catch basin is closed on lifting platform.
8. the apparatus according to claim 1, which is characterized in that the liquid circulation module include fluid discharge pump and/or
Flowmeter.
9. the apparatus according to claim 1, which is characterized in that the Germicidal efficacy module further includes observation device, described
Observation device includes microscope and/or video camera.
10. the apparatus according to claim 1, which is characterized in that set between the liquid circulation module and closing catch basin
It is equipped with the first shut-off valve；The second shut-off valve is provided between the closing catch basin and Germicidal efficacy module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721154830.5U CN207396267U (en) | 2017-09-08 | 2017-09-08 | In the device of different pressure down regulation gas dissolved water saturation degrees |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721154830.5U CN207396267U (en) | 2017-09-08 | 2017-09-08 | In the device of different pressure down regulation gas dissolved water saturation degrees |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107621433A (en) * | 2017-09-08 | 2018-01-23 | 北京大学 | Regulate and control the device of gas dissolved water saturation degree under different pressure |
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2017
- 2017-09-08 CN CN201721154830.5U patent/CN207396267U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107621433A (en) * | 2017-09-08 | 2018-01-23 | 北京大学 | Regulate and control the device of gas dissolved water saturation degree under different pressure |
| CN107621433B (en) * | 2017-09-08 | 2024-05-31 | 北京大学 | Device for regulating and controlling saturation of dissolved gas in liquid |
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