CN107589042A - Decoction density measurement system and method and utilize its decoction water level measurement method - Google Patents
Decoction density measurement system and method and utilize its decoction water level measurement method Download PDFInfo
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- CN107589042A CN107589042A CN201710548655.6A CN201710548655A CN107589042A CN 107589042 A CN107589042 A CN 107589042A CN 201710548655 A CN201710548655 A CN 201710548655A CN 107589042 A CN107589042 A CN 107589042A
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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
- G01F23/14—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 measurement of pressure
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D7/00—Control of flow
- G05D7/06—Control of flow characterised by the use of electric means
- G05D7/0617—Control of flow characterised by the use of electric means specially adapted for fluid materials
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/182—Level alarms, e.g. alarms responsive to variables exceeding a threshold
Abstract
The present invention relates to a kind of decoction density measurement system, decoction density measuring method and its decoction water level measurement method is utilized, including：Decoction measurement pipe, it is connected with dipper, and the decoction for having dipper is filled, and the decoction changed according to Time Density is filled in dipper；First flows into pipe, the first position that its lower end is opened in decoction measurement pipe inner space, and guides and be fed to air inside decoction to decoction measurement pipe inner space；Second flows into pipe, and its lower end opens in decoction measurement pipe inner space and the second place of the first spacing is higher by than first position, and guides gas to decoction measurement pipe inner space；Pipe and second, which is flowed into, to first flows into the first air supply unit and the second air supply unit and the control unit for calculating decoction density of pipe supply gas.
Description
Technical field
The present invention relates to a kind of decoction density measurement system, decoction density measuring method and utilize its decoction level measuring
Method, specifically, be on it is a kind of can continuous correct measurement decoction density real-time change decoction density measurement system, decoction
Density measuring method and utilize its decoction water level measurement method.
Background technology
In general, the decoction water level (Level) of medicine liquid irrigation is stored at using various sensors (Sensor) measurement.Profit
Whether contact measurement method and non-contact measurement can be divided into according to contact measurement object with the water level measurement method of sensor
Method.
Contact measurement method can lift level sensor (Level Sensor).But utilize such non-contact measurement side
Method, various safety issues can occur.For example, during specific decoction of the measurement with toxicity or severe corrosive, because of connecing for sensor
Contact portion position is corroded and absorbs impurity, causes purity to reduce, and then decoction is exposed in harmful components.
Contactless measurement can lift capacitance type sensor." water level tree (Level tree) " mode can be typically used,
Multiple capacitance type sensors are set on the appropriate location of the pipeline of connection medicine liquid tank upper and lower side, have measured the decoction of each position
Whether there is.But such mode is difficult the decoction water level inside correct measurement to medicine liquid tank.
Especially, because existing level sensor is in the medicine liquid ingredient that measurement changes over time, because its decoction is close
The change of degree and there is sizable error.
The content of the invention
(solving the problems, such as)
The problem to be solved in the present invention be to provide it is a kind of can continuous correct measurement decoction density real-time change decoction density
Measuring system, decoction density measuring method and utilize its decoction water level measurement method.(means for solving problem)
To solve the problems, such as that the invention described above will solve, the present invention provides a kind of decoction density measurement system, decoction density
Measuring method and utilize its decoction water level measurement method, it is characterised in that including：Decoction measurement pipe, it is connected with dipper,
The decoction for having foregoing dipper is flowed into, and the decoction changed according to Time Density is filled in dipper；First flows into pipe, its lower end
The first position opened in above-mentioned decoction measurement pipe inner space, and guide and be fed to air inside above-mentioned decoction to above-mentioned
Decoction measurement pipe inner space；Second flows into pipe, and its lower end is opened in above-mentioned decoction measurement pipe inner space than above-mentioned first
Position is higher by the second place of the first spacing, and guides above-mentioned gas to above-mentioned decoction measurement pipe inner space；First supply is single
Member, its to it is above-mentioned it is first-class enter pipe supply above-mentioned gas, so as to above-mentioned first position measurement decoction pressure；Second supply is single
Member, it enters pipe supply above-mentioned gas to above-mentioned second, so as in the pressure of said second position measurement decoction；And control is single
Member, based on first pressure of the gas of pipe discharge when extruding the decoction of first position is flowed into from above-mentioned first, from above-mentioned second
Flow into second pressure of the gas of pipe discharge when extruding the decoction of the second place, and the above-mentioned above-mentioned decoction of first distance computation
Density.
Above-mentioned control unit can utilize following【Formula 1】Calculate above-mentioned decoction density.
【Formula 1】
Between in formula, ρ is density, g is acceleration of gravity, △ P are the difference of first pressure and second pressure, △ H are first
Away from.
Above-mentioned first air supply unit includes：Supply above-mentioned gas to it is above-mentioned it is first-class enter pipe first supply position, connection
Above-mentioned first supply position and above-mentioned first flows into the first supply line of pipe, and controls on above-mentioned first supply line above-mentioned
First control valve of gas.
Above-mentioned second air supply unit includes：Supply above-mentioned gas to above-mentioned second enters the second supply position of pipe, connection
Above-mentioned second supply position and above-mentioned second flows into the second supply line of pipe, and controls on above-mentioned second supply line above-mentioned
Second control valve of gas.
Meanwhile above-mentioned decoction density measurement system may also include：First sensor, it is located at above-mentioned first air supply unit
On, the decoction for confirming to occur by the gas for flowing into above-mentioned first inflow pipe plays dwell cycle；And second sensor, its
On above-mentioned second air supply unit, the decoction for confirming to occur by the gas for flowing into above-mentioned second inflow pipe bubbles week
Phase.
Above-mentioned control unit can be according to the decoction the first dwell cycle measured by above-mentioned first sensor, and passes through
The decoction that above-mentioned second sensor measures second plays dwell cycle, and the gas that prediction flows into pipe inflow by above-mentioned first is first-class
Amount and the gas second flow flowed into by the above-mentioned second inflow pipe, judge whether above-mentioned first flow and above-mentioned second flow surpass
Go out respective allowed band.
Meanwhile above-mentioned control unit can determine whether above-mentioned first flow and above-mentioned second flow have substantive identical
Value；If when above-mentioned first flow and the numerical value difference of above-mentioned second flow, pass through above-mentioned first control valve and above-mentioned second control
At least one in valve adjusts throughput.
In addition, above-mentioned decoction density measurement system may also include prompting instrument, i.e., when above-mentioned first flow and above-mentioned second
When flow exceeds respective allowed band, the outside situation is notified.
According to the different forms of implementation of the present invention, on the side using decoction density measurement system measurement decoction density
A kind of method, there is provided decoction density measuring method.It comprises the following steps：The lower end for flowing into pipe by above-mentioned first and above-mentioned second
The lower end for entering pipe is arranged in above-mentioned decoction measurement pipe, both is had the step of above-mentioned first spacing；Measure above-mentioned first pressure
The step of power and above-mentioned second pressure；And according in above-mentioned first pressure, above-mentioned second pressure and above-mentioned first distance computation
The step of stating decoction density.
Above-mentioned decoction density measuring method can also include the steps of：In measurement because flowing into the above-mentioned first gas for flowing into pipe
And while the decoction the first dwell cycle of appearance, measure the decoction second occurred by the gas for flowing into above-mentioned second inflow pipe
The step of playing dwell cycle；According to above-mentioned the first dwell cycle and above-mentioned second dwell cycle, prediction is flowed into by above-mentioned first and managed
The step of first flow of inflow gas and the second flow by the above-mentioned second inflow pipe inflow gas；Judge above-mentioned first-class
Amount and above-mentioned second flow whether the step in respective allowed band；And when above-mentioned first flow and above-mentioned second
In amount, when at least one exceeds respective allowed band, the first control valve being connected is managed by controlling to flow into above-mentioned first
And flow into the step of any one control valve managed in the second control valve being connected carrys out adjusting gas flow with above-mentioned second.
Meanwhile above-mentioned decoction density measuring method may also include prompting step, i.e., when above-mentioned first flow and above-mentioned second
When flow exceeds respective allowed band, by the step outside situation notice.
According to another embodiment of the invention, on utilizing decoction density measuring method of the present invention measurement medicine
A kind of method of liquid water level, there is provided decoction water level measurement method, it is using following【Formula 1】Calculate above-mentioned decoction density
Step, and it is following based on above-mentioned decoction density, utilization【Formula 2】The step of calculating above-mentioned decoction water level.
【Formula 1】
Between in formula, ρ is density, g is acceleration of gravity, △ P are the difference of first pressure and second pressure, △ H are first
Away from；
【Formula 2】
In formula, H is the water level of decoction, ρ is density, g is acceleration of gravity, P2 is to be discharged from the above-mentioned second inflow pipe
Second pressure of the gas when extruding the decoction of the second place.
Brief description of the drawings
Fig. 1 is the drawing for the primary structure for showing decoction density measurement system of the present invention.
The flow chart illustration that Fig. 2 is decoction density measuring method of the present invention and decoction level measuring is violated the law.
Fig. 3 a and Fig. 3 b are shown because occurring the drawing of decoction pressure change with the time supplied to decoction measurement pipe.
Fig. 4 is drawing of the display supplied to relation between the gas flow of decoction measurement pipe and a dwell cycle.
Embodiment
Below with reference to the accompanying drawings explanation can implement the above-mentioned preferred embodiment that solve problem.In explanation the present embodiment
When, same name and same symbol are used for same structure, and it is below, and related additional information will omit.
Referring to figs. 1 to Fig. 4, decoction density measurement system, decoction density measuring method and medicine of the present invention as described below
A kind of embodiment of liquid water level measurement method.
In the present embodiment, decoction density measurement system includes decoction measurement pipe (100), the first inflow pipe (210), second
Flow into pipe (220), the first air supply unit, the second air supply unit, first sensor (310), second sensor (320), prompting work
Have (not shown) and control unit (not shown).
Above-mentioned decoction measurement pipe (100) is connected with dipper, and the decoction for having above-mentioned dipper is filled, and is contained in dipper
The decoction of with good grounds Time Density change.
Above-mentioned first flows into the first position that pipe (210) lower end is opened in above-mentioned decoction measurement pipe (100) inner space.
Above-mentioned first, which flows into pipe (210) guiding, is fed to air inside above-mentioned decoction to above-mentioned decoction measurement pipe (100) inner space.
Pipe (210) is flowed into when gas flows into above-mentioned first, is flowed into above-mentioned first in pipe (210) end above-mentioned gas extruding
The decoction of decoction measurement pipe (100) inner space storage is stated, and forms foam.Influenceed by the generation of above-mentioned foam, by above-mentioned
The decoction pressure of first sensor (310) measurement will change according to time generating period.
Here, because above-mentioned first flow into pipe (210) gas generation above-mentioned foam, caused by above-mentioned decoction pressure root
It is referred to as the first dwell cycle according to the period of change of time.
Above-mentioned second lower end for flowing into pipe (220) is opened in the inner space of above-mentioned decoction measurement pipe (100) than above-mentioned
First position is higher by the first spacing (△ H) second place.Above-mentioned second flows into pipe (220) guiding supplied to the above-mentioned second supply
The gas of unit is to above-mentioned decoction measurement pipe (100) inner space.
Pipe (220) is flowed into when gas flows into above-mentioned second, is flowed into above-mentioned second in pipe (220) end above-mentioned gas extruding
The decoction of decoction measurement pipe (100) inner space storage is stated, and forms foam.Influenceed by the generation of above-mentioned foam, by above-mentioned
Decoction pressure measured by second sensor (320) will change according to the time, be shown as second dwell cycle.
Above-mentioned first air supply unit is measures the decoction pressure on above-mentioned first position, by above-mentioned gas supplied to above-mentioned the
One flows into pipe (210)；And above-mentioned second air supply unit is the decoction pressure in measurement said second position, above-mentioned gas are supplied
Enter pipe (220) to above-mentioned second.Here, above-mentioned gas, which can be cleaning, dries source of the gas (CDA:Clean Dry Air) or nitrogen.
Specifically, above-mentioned first air supply unit includes：Supply above-mentioned gas to it is above-mentioned it is first-class enter pipe (210) first
Supply position (510), above-mentioned first supply position (510) of connection and above-mentioned first flows into the first supply line for managing (210)
(411) the first control valve (410) of said flow, and on above-mentioned first supply line (411) is controlled.
Meanwhile above-mentioned second air supply unit includes：Supply above-mentioned gas to above-mentioned second enters the second supply of pipe (220)
Position (520), above-mentioned second supply position (520) of connection and above-mentioned second flow into the second supply line (421) of pipe (220), with
And the second control valve (420) of said flow is controlled on above-mentioned second supply line (421).
Above-mentioned first sensor (310) is configured at above-mentioned first air supply unit, i.e., on above-mentioned first supply line (411), uses
In the first dwell cycle for confirming to occur because flowing into the above-mentioned first inflow gas for flowing into pipe (210).
Specifically, above-mentioned first sensor (310) measurement changes above-mentioned because above-mentioned gas flow into the time
First position decoction pressure.
Here, if above-mentioned gas flow is less, because the foaming that above-mentioned gas occur has some setbacks, cause the mistake of pressure rising
By mistake；On the contrary, if above-mentioned gas flow is more, above-mentioned the first dwell cycle then can be shorter than the response time of above-mentioned first sensor,
Cause counteracting (Offset) phenomenon of measurement signal, it is low to ultimately result in correctness.
Therefore, should have the first allowed band by the above-mentioned first gas flow for flowing into the inflow for managing (210).
The decoction measured when gas flow is 30cc/min in above-mentioned first sensor (310) is shown in Fig. 3 (a)
First position pressure change.Fig. 3 (b) is shown to be surveyed when gas flow is 40cc/min in above-mentioned first sensor (310)
The decoction first position pressure change measured.It can be seen that gas flow is more, the first dwell cycle is shorter.
Meanwhile see Fig. 4, when gas flow is 20cc/min, the first dwell cycle is 1.36sec；When gas flow is
During 40cc/min, the first dwell cycle is 0.92sec；When gas flow is 60cc/min, the first dwell cycle is shown as
0.527sec.It follows that the first dwell cycle and gas flow are linear.
Here, above-mentioned the first dwell cycle the pressure waveform that above-mentioned first sensor (310) measures be in definite shape under,
It is preferred that it is configured after considering the above-mentioned first sensor response time.
Equally, above-mentioned second sensor (320) is located at above-mentioned second air supply unit, i.e., on above-mentioned second supply line (421),
For second dwell cycle for confirming to occur because flowing into the above-mentioned second inflow gas for flowing into pipe (220).
Above-mentioned control unit is with based on the above-mentioned decoction density of following parameter calculating：Pipe (210) discharge is flowed into from above-mentioned first
The above-mentioned first position of gas extrusion decoction when first pressure；The gas extrusion for flowing into pipe (220) discharge from above-mentioned second
The second pressure during decoction of said second position；And above-mentioned first spacing (△ H).
Specifically, above-mentioned control unit can utilize following【Formula 1】Calculate above-mentioned decoction density.
【Formula 1】
Between in formula, ρ is density, g is acceleration of gravity, △ P are the difference of first pressure and second pressure, △ H are first
Away from.
From the results of view, pipe gas is flowed into using the first pressure when first flows into pipe gas extrusion decoction, second
Body extrudes second pressure during decoction, and first flows into pipe lower end and the second the first spacing flowed between pipe lower end, simply
The decoction density changed over time is measured in real time.
Certainly, the invention is not restricted to this, above-mentioned first pressure and above-mentioned second pressure may be configured as the average value of period,
Now, it is defined by the sampling time period in above-mentioned first sensor and above-mentioned second sensor measurement pressure.
Meanwhile above-mentioned control unit is by based on the decoction the first dwell cycle measured by above-mentioned first sensor, Yi Jiyou
The decoction second of above-mentioned second sensor measurement plays dwell cycle, and the gas that prediction flows into pipe inflow by above-mentioned first is first-class
Amount, and pass through the above-mentioned second gas second flow for flowing into pipe inflow.
, can be from above-mentioned the first dwell cycle and above-mentioned as shown in figure 4, the gentle body flow of above-mentioned dwell cycle is linear
Second foaming computation of Period goes out above-mentioned first flow and above-mentioned second flow.
Above-mentioned control unit judges whether above-mentioned first flow and above-mentioned second flow depart from respective allowed band.When upper
State first flow and when above-mentioned second flow exceeds its respective allowed band, above-mentioned first control valve and above-mentioned second control valve
It is adjusted, and then adjusts above-mentioned first flow and above-mentioned second flow.
Here, to reduce the error of decoction density, above-mentioned first flow and above-mentioned second flow substantially should be identical value.
Above-mentioned control unit judges whether above-mentioned first flow and above-mentioned second flow have substantially the same value.When upper
State first flow and when above-mentioned second flow has different value, by above-mentioned first control valve and above-mentioned second control valve at least
One is carried out adjusting gas flow.
On the other hand, when above-mentioned first flow and above-mentioned second flow exceed respective allowed band, or it is above-mentioned first-class
When amount and above-mentioned second flow show different value, above-mentioned prompting instrument will show that operating personnel is informed in the status information to outside.
The method of above-mentioned prompting instrument display information can be：Lighted and reminded in the form of LED；With loudspeaker forms sound
Or voice display information；Or with text importing information in the form of display device.
With reference to figure 1 and Fig. 2, decoction density measurement system, decoction density measuring method and profit of the present invention as described below
With its decoction water level measurement method.
First, user flows into the lower end for managing (210) by first and the second lower end configuration for flowing into pipe (220) measures in decoction
Manage (100), both is had the first spacing (△ H).
Then, decoction density measurement system is started, now first sensor (310) measurement decoction measurement pipe (100) first
Decoction pressure on position, that is, it is exactly first pressure.Meanwhile second sensor (320) measurement decoction measurement pipe (100) second
The decoction pressure put, that is, it is exactly second pressure.
Thus, control unit can calculate above-mentioned according to above-mentioned first pressure, above-mentioned second pressure and above-mentioned first spacing
Decoction density (S40).
Here, to reduce the error of decoction density, it is necessary to which the gas of appropriate flow is uniformly flowed into supplied to above-mentioned first
Manage (210) and above-mentioned second inflow pipe (220).
Therefore, above-mentioned first sensor (310) will measure what is occurred because flowing into the above-mentioned first gas for flowing into pipe (210)
Decoction the first dwell cycle, and above-mentioned second sensor (320) then monitor because flow into it is above-mentioned second flow into pipe (220) gas and
The decoction second of appearance plays dwell cycle (S10).
Now, above-mentioned control unit will lead to according to above-mentioned the first dwell cycle and above-mentioned second foaming period forecasting and confirmation
Cross above-mentioned first and flow into the gas first flow that pipe (210) flows into, and the gas managed (220) and flowed into is flowed into by above-mentioned second
Second flow (S20).
Then, above-mentioned control unit will determine that above-mentioned first flow and above-mentioned second flow whether respective allowed band it
It is interior.
Next, when any one flow in above-mentioned first flow and above-mentioned second flow exceeds respective allowed band
When, above-mentioned control unit, which will control the first control valve for being connected to above-mentioned first inflow pipe and be connected to above-mentioned second, flows into pipe
Any one control valve in second control valve carrys out adjusting gas flow (S30).
Moreover above-mentioned control unit is judging whether above-mentioned first flow and above-mentioned second flow have substantially
After identical value, if above-mentioned first flow and above-mentioned second flow have different value, pass through above-mentioned first control valve and above-mentioned
Any one control valve in two control valves carrys out adjusting gas flow.
From the results of view, the decoction the first dwell cycle occurred because flowing into the first gas for flowing into pipe (210) is measured, with
And the decoction second occurred because flowing into the second gas for flowing into pipe (220) plays dwell cycle, and with above-mentioned the first dwell cycle and upper
Based on stating second dwell cycle, prediction flows into the gas first flow managed (210) and flowed into by above-mentioned first, and by upper
The gas second flow of the second inflow pipe (220) inflow is stated, controls above-mentioned first flow and above-mentioned second flow to keep identical value,
So as to reduce the decoction density error caused by difference in flow.
Here, when above-mentioned first flow and above-mentioned second flow exceed respective allowed band, or above-mentioned first flow
When showing different value with above-mentioned second flow, remind instrument by the situation presentation of information in outside.
Then, control unit will be following according to above-mentioned decoction density, utilization【Formula 2】Calculate above-mentioned decoction water level (S50).
【Formula 2】
In formula, H is decoction water level, ρ is density, g is acceleration of gravity, P2 is from the above-mentioned second gas for flowing into pipe discharge
Second pressure of the body when extruding the decoction of the second place.Certainly, the above-mentioned decoction density p changed over time needs to utilize in advance
Foregoing【Formula 1】It is calculated.
From the results of view, decoction density and decoction water level are measured using decoction density measurement system involved in the present invention,
Alternative great number flowmeter or flow regulator, so as to save correlative charges.
Decoction density measurement system of the present invention, decoction density measuring method and utilize its decoction water level measurement method
Effect it is as follows：
Firstth, flow into the lower end of pipe and second in decoction measurement pipe configuration first and flow into the lower end of pipe, both is had the
After one spacing, pipe gas extrusion decoction is flowed into using the first pressure when first flows into pipe gas extrusion decoction, second
When second pressure, simply measure the decoction density changed over time in real time.Moreover, can be simple using above-mentioned decoction density
Measure above-mentioned decoction water level.
Secondth, measurement is because flowing into the gas of the first inflow pipe the decoction the first dwell cycle that occurs, and because flowing into the
After two decoctions second for flowing into the gas of pipes and occurring play dwell cycle, above-mentioned the first dwell cycle and above-mentioned second foaming week are utilized
Phase prediction flows into the gas first flow that pipe flows into and the gas second flowed into by the above-mentioned second inflow pipe by above-mentioned first
Flow, and control above-mentioned first flow and above-mentioned second flow to keep identical value, so as to reduce the medicine caused by difference in flow
Liquid-tight degree.
3rd, decoction density and decoction water level are measured using decoction density measurement system involved in the present invention, it is alternative
Great number flowmeter or flow regulator, so as to save correlative charges.
As described above, the invention is not restricted to preferred embodiment described above.One of ordinary skill in the art should can be
The technical scheme that the right of the present invention demands area requirement protection carries out various modifications and implementation, and such deformation is utilized and do not departed from
The scope of technical solution of the present invention.
Claims (11)
- A kind of 1. decoction density measurement system, it is characterised in that including：Decoction measurement pipe, it is connected with dipper, and the decoction for having dipper is filled, and is filled in dipper according to Time Density The decoction of change；First flows into pipe, the first position that its lower end is opened in above-mentioned decoction measurement pipe inner space, and guides and be fed to Gas inside decoction is stated to above-mentioned decoction measurement pipe inner space；Second flows into pipe, and its lower end opens in above-mentioned decoction measurement pipe inner space and is higher by the first spacing than above-mentioned first position The second place, and guide above-mentioned gas to above-mentioned decoction measurement pipe inner space；First air supply unit, its to it is above-mentioned it is first-class enter pipe supply above-mentioned gas, so as in above-mentioned first position measurement decoction Pressure；Second air supply unit, it enters pipe supply above-mentioned gas to above-mentioned second, so as in said second position measurement decoction Pressure；AndControl unit, the first pressure based on the gas from the above-mentioned first inflow pipe discharge when extruding the decoction of first position, Second pressure of the gas of pipe discharge when extruding the decoction of the second place is flowed into from above-mentioned second, and above-mentioned first spacing is come Calculate above-mentioned decoction density.
- 2. decoction density measurement system according to claim 1, it is characterised in thatAbove-mentioned control unit passes through following【Formula 1】Calculate above-mentioned decoction density；【Formula 1】<mrow> <mi>&rho;</mi> <mo>=</mo> <mrow> <mo>(</mo> <mfrac> <mn>1</mn> <mi>g</mi> </mfrac> <mo>)</mo> </mrow> <mrow> <mo>(</mo> <mfrac> <mrow> <mi>&Delta;</mi> <mi>P</mi> </mrow> <mrow> <mi>&Delta;</mi> <mi>H</mi> </mrow> </mfrac> <mo>)</mo> </mrow> </mrow>Wherein, ρ is density, g is acceleration of gravity, △ P are the difference of first pressure and second pressure, △ H are the first spacing.
- 3. decoction density measurement system according to claim 1, it is characterised in thatAbove-mentioned first air supply unit includes：Supply above-mentioned gas to it is above-mentioned it is first-class enter pipe first supply position, connection it is above-mentioned First supply position and above-mentioned first flows into the first supply line of pipe, and controls above-mentioned gas on above-mentioned first supply line The first control valve；Above-mentioned second air supply unit includes：Supply above-mentioned gas to above-mentioned second enter pipe second supply position, connection it is above-mentioned Second supply position and above-mentioned second flows into the second supply line of pipe, and controls above-mentioned gas on above-mentioned second supply line The second control valve.
- 4. decoction density measurement system according to claim 3, it is characterised in that also include：First sensor, it is located on above-mentioned first air supply unit, for confirm because flow into it is above-mentioned first flow into pipe gas and The decoction of appearance plays dwell cycle；AndSecond sensor, it is located on above-mentioned second air supply unit, for confirm because flow into it is above-mentioned second flow into pipe gas and The decoction of appearance plays dwell cycle.
- 5. decoction density measurement system according to claim 4, it is characterised in thatAbove-mentioned control unit is according to the decoction the first dwell cycle measured by above-mentioned first sensor, and passes through above-mentioned The decoction that two sensors measure second plays dwell cycle, prediction by the above-mentioned first first flow for flowing into the gas that pipe flows into and By the above-mentioned second second flow for flowing into the gas that pipe flows into, judge whether above-mentioned first flow and above-mentioned second flow exceed Respective allowed band.
- 6. decoction density measurement system according to claim 5, it is characterised in thatAbove-mentioned control unit judges whether above-mentioned first flow and above-mentioned second flow have substantive identical value；If above-mentioned When one flow and the numerical value difference of above-mentioned second flow, then by above-mentioned first control valve and above-mentioned second control valve at least One adjusts throughput.
- 7. decoction density measurement system according to claim 5, it is characterised in that also include：Prompting instrument, i.e., when above-mentioned first flow and above-mentioned second flow exceed respective allowed band, the situation is notified It is outside.
- 8. a kind of measure the method for decoction density using decoction density measurement system according to claim 1, its feature It is, comprises the following steps：The lower end of the lower end of above-mentioned first inflow pipe and above-mentioned second inflow pipe is arranged in above-mentioned decoction measurement pipe, and makes two Person has the step of above-mentioned first spacing；The step of measuring above-mentioned first pressure and above-mentioned second pressure；AndAccording to the step of above-mentioned first pressure, above-mentioned second pressure and above-mentioned first distance computation above-mentioned decoction density.
- 9. decoction density measuring method according to claim 8, it is characterised in that further comprising the steps of：While the decoction the first dwell cycle occurred by the gas for flowing into above-mentioned first inflow pipe is measured, measure because flowing into The step of above-mentioned second decoction second for flowing into the gas of pipe and occurring plays dwell cycle；According to above-mentioned the first dwell cycle and above-mentioned second dwell cycle, prediction flows into the of pipe inflow gas by above-mentioned first The step of one flow and the second flow by the above-mentioned second inflow pipe inflow gas；Judge above-mentioned first flow and above-mentioned second flow whether the step in respective allowed band；AndIn above-mentioned first flow and above-mentioned second flow, when at least one exceeds respective allowed band, by control with Above-mentioned first flows into the first connected control valve of pipe and is managed with the above-mentioned second inflow any one in the second control valve being connected The step of individual control valve adjusting gas flow.
- 10. decoction density measuring method according to claim 9, it is characterised in that also include：Step is reminded, i.e., when above-mentioned first flow and above-mentioned second flow exceed respective allowed band, notifies the outside feelings The step of condition.
- 11. a kind of decoction density measuring method using any one of claim 8 to 10 measures decoction water level Method, it is characterised in thatUsing following【Formula 1】The step of calculating above-mentioned decoction density, and it is following based on above-mentioned decoction density, utilization 【Formula 2】The step of calculating above-mentioned decoction water level：【Formula 1】<mrow> <mi>&rho;</mi> <mo>=</mo> <mrow> <mo>(</mo> <mfrac> <mn>1</mn> <mi>g</mi> </mfrac> <mo>)</mo> </mrow> <mrow> <mo>(</mo> <mfrac> <mrow> <mi>&Delta;</mi> <mi>P</mi> </mrow> <mrow> <mi>&Delta;</mi> <mi>H</mi> </mrow> </mfrac> <mo>)</mo> </mrow> </mrow>In formula 1, ρ is density, g is acceleration of gravity, △ P are the difference of first pressure and second pressure, △ H are the first spacing；【Formula 2】<mrow> <mi>H</mi> <mo>=</mo> <mfrac> <msub> <mi>P</mi> <mn>2</mn> </msub> <mrow> <mi>&rho;</mi> <mi>g</mi> </mrow> </mfrac> </mrow>In formula 2, H is the water level of decoction, ρ is density, g is acceleration of gravity, P2 is from the above-mentioned second gas for flowing into pipe discharge Second pressure of the body when extruding the decoction of the second place.
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| KR1020160085779A KR101862830B1 (en) | 2016-07-06 | 2016-07-06 | System and Method for for measuring density of chemical solution and Measuring method for level of chemical solution using the same |
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| KR102417748B1 (en) * | 2021-01-13 | 2022-07-07 | 엘지전자 주식회사 | Apparatus for sensing oil of compressor and compressor having this |
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| JP2789058B2 (en) * | 1989-03-31 | 1998-08-20 | コミッサレ・ア・レナジイ・アトミック | Liquid density and level measuring device |
| JP2010008122A (en) * | 2008-06-25 | 2010-01-14 | Panasonic Electric Works Co Ltd | Gas sensor |
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| GB2376080B (en) | 2001-05-30 | 2004-08-04 | Micro Motion Inc | Flowmeter proving device |
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| JP2789058B2 (en) * | 1989-03-31 | 1998-08-20 | コミッサレ・ア・レナジイ・アトミック | Liquid density and level measuring device |
| JP2010008122A (en) * | 2008-06-25 | 2010-01-14 | Panasonic Electric Works Co Ltd | Gas sensor |
| JP2010164411A (en) * | 2009-01-15 | 2010-07-29 | Citizen Watch Co Ltd | Thin film gas sensor |
| CN104204792A (en) * | 2012-01-27 | 2014-12-10 | Abb技术有限公司 | Acoustic method and device for measuring a fluid density or a fluid viscosity |
| CN104237066A (en) * | 2014-09-26 | 2014-12-24 | 哈尔滨东安发动机（集团）有限公司 | Method for measuring density of object |
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