CN106767936A - The concentration detection system and its detection method of a kind of use integration technology - Google Patents
The concentration detection system and its detection method of a kind of use integration technology Download PDFInfo
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- CN106767936A CN106767936A CN201710071317.8A CN201710071317A CN106767936A CN 106767936 A CN106767936 A CN 106767936A CN 201710071317 A CN201710071317 A CN 201710071317A CN 106767936 A CN106767936 A CN 106767936A
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- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D1/00—Measuring arrangements giving results other than momentary value of variable, of general application
- G01D1/16—Measuring arrangements giving results other than momentary value of variable, of general application giving a value which is a function of two or more values, e.g. product or ratio
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/36—Analysing materials by measuring the density or specific gravity, e.g. determining quantity of moisture
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Abstract
The invention provides a kind of concentration detection system of use integration technology, including gravity type concentration detection apparatus, three kinds of concentration detection apparatus of floating type concentration detection apparatus and differential concentration detection apparatus for being connected respectively with controller, the solution concentration information that three kinds of concentration detection apparatus detect the concentration value of the solution to be detected in detect tank and will detect respectively is respectively transmitted to controller.The invention detects the concentration of solution with three kinds of different sensor detection modes respectively under same operating mode, and most three kinds of concentration datas process and obtain final concentration value at last, greatly improve the precision of measurement of concetration.
Description
Technical field
The invention belongs to solution concentration detection equipment technical field, more particularly, to a kind of the dense of use integration technology
Degree detecting system and its detection method.
Background technology
The concentration of measurement solution typically all uses concentration detection apparatus, the detection side of existing concentration detection apparatus in the prior art
Formula is relatively simple, and accuracy of detection is not high enough, if using the larger concentration values of error in production or experiment, its consequence can't bear
Envision.
The content of the invention
In view of this, the invention is directed to a kind of concentration detection system of use integration technology, to propose one kind
New concentration detection apparatus.It is emphasized that in the invention, each device and/or module are operated treatment when institute
Agreement, software or the program being related to have existed in the prior art, and those skilled in the art fully know.As stated above,
The invention is not related to the content of software, but propose it is a kind of how by each device and/or module it is organically integrated, integrate
Into an entirety, i.e., there is provided a kind of structural scheme.
To reach above-mentioned purpose, what the technical scheme of the invention was realized in：
A kind of concentration detection system of use integration technology, including the gravity type Concentration Testing dress being connected respectively with controller
Put, three kinds of concentration detection apparatus of floating type concentration detection apparatus and differential concentration detection apparatus, three kinds of concentration detection apparatus point
The concentration value of solution to be detected that Jian Ce be in the detect tank and solution concentration information that will be detected is respectively transmitted to controller, control
The concentration data that device processed detects three kinds of concentration detection apparatus carries out adaptive weighted treatment；The quantity of the detect tank is three
It is individual, gravity type concentration detection apparatus, floating type concentration detection apparatus and differential concentration detection apparatus respectively with a detect tank
Correspondence, the solution in detect tank is same and from same place.
Further, the gravity type concentration detection apparatus include force-sensing sensor and first transmitter supporting with it,
First transmitter is connected with controller, and the force side of force-sensing sensor is hung with the first float by corrosion-resistant messenger wire, and first floats
Son can be placed in inside detect tank.
Further, during detection, by the hanging of the first float in detect tank, force-sensing sensor, the first transmitter and part
Corrosion-resistant messenger wire is located at detect tank top.
Further, the floating type concentration detection apparatus include the second float, and one end of the second float is provided with protrusion
In end face and the float lever vertical with end face, the sidepiece of float lever is provided with the displacement transducer for detecting float lever displacement,
Displacement transducer is connected with the second transmitter, and the second transmitter is connected with controller, and the second float and float lever can be placed in detection
Inside groove.
Further, during detection, the second float and float lever are vertically arranged, and the second float are positioned in detect tank, portion
Float lever is divided to be located in detect tank, displacement transducer, the second transmitter and part float lever are located at detect tank top, described second
Float is cylinder, and float lever is cylinder, and the second float is bigger with the diameter ratio of float lever, floating type concentration detection apparatus
It is sensitiveer.
Further, the differential concentration detection apparatus include fix bar, are provided with fix bar spaced resistance to
The first pressure sensor and second pressure sensor of corrosion, one end of fix bar are provided with and first pressure sensor and second
The 3rd supporting transmitter of pressure sensor, first pressure sensor and second pressure sensor connect with the 3rd transmitter respectively
Connect, the 3rd transmitter is connected with controller, during detectable concentration, the other end of fix bar is vertically placed in detect tank, first pressure
Sensor and second pressure sensor are located in detect tank respectively.
Further, during detection, the lower end of the fix bar abuts with the bottom of detect tank, and second pressure sensor is close to
At the liquid level of solution to be detected, first pressure sensor is near the bottom of detect tank.
Further, feed tube is provided with above the detect tank, valve is provided with feed tube, the feed tube is
The branch line of work liquid pipeline to be detected in workshop appliance, the side wall upper part of the detect tank offers overfall, during detection,
Overflow liquid level in each detect tank is identical and three overflow liquid levels of detect tank are located on same horizontal plane.
The invention also proposed a kind of detection method of the concentration detection system of use integration technology, existing to solve
The not high enough technical problem of concentration detection apparatus precision in technology, comprises the following steps：
Step one：Three detect tanks are located in identical operating mode, control the flow of the solution to be detected of inflow also identical；
Step 2：Respectively to pure water is injected in detect tank, it is always maintained at overfall and there are flowing out state, it is dense using gravity type
Degree detection means, floating type concentration detection apparatus, differential concentration detection apparatus are placed on detection in pure water, now gravity type concentration
The value of thrust F that detection means, floating type concentration detection apparatus, differential concentration detection apparatus are detected0, float lever position,
Pressure differential Δ P0It is initial value；
Step 3：Emptying detect tank, solution to be detected is injected in detect tank simultaneously, until overfall has solution to flow out simultaneously
This present situation is always maintained at, gravity type concentration detection apparatus, floating type concentration detection apparatus, differential concentration detection apparatus are same respectively
When detect solution to be detected, and the data is activation that will be detected respectively is to controller；
Step 4：After three concentration datas that controller will be received carry out adaptive weighted treatment, obtain to be detected molten
The ultimate density numerical value of liquid.
Further, being set up in the controller has knowledge base, database and inference machine, different in the step 4
Weight coefficient is called automatically from the knowledge base and database constantly updated by inference machine.
Relative to prior art, a kind of concentration detection system of the use integration technology described in the invention has following
Advantage：
(1) the invention detects the dense of solution with three kinds of different sensor detection modes respectively under same operating mode
Degree, and most three kinds of concentration datas are weighted treatment at last, greatly improve the precision of measurement of concetration；
(2) the invention simple structure, it is economic and practical, for the three kinds of sensitivity of detection means of various concentrations solution not
Together, so the weight coefficient of concentration is different, measurement precision is high, has value very high, with wide market prospects.
Brief description of the drawings
The accompanying drawing for constituting the part of the invention is used for providing further understanding the invention, present invention wound
The schematic description and description made does not constitute the improper restriction to the invention for explaining the invention.
In accompanying drawing：
Fig. 1 is the structural representation of the invention embodiment；
Fig. 2 is the structural representation of the floating type concentration detection apparatus described in the invention embodiment；
Fig. 3 is the structural representation of the differential concentration detection apparatus described in the invention embodiment.
Description of reference numerals：
1- gravity type concentration detection apparatus；101- force-sensing sensors；The corrosion-resistant messenger wires of 102-；The floats of 103- first；2- weights
The floating type concentration detection apparatus of power；The floats of 201- second；202- float levers；203- displacement transducers；The differential Concentration Testings of 3-
Device；301- first pressure sensors；302- second pressure sensors；303- fix bars；The transmitters of 304- the 3rd；4- is detected
Groove；401- overfalls；402- blowoff valves；5- work liquid pipelines to be detected；51- feed tubes；6- valves.
Specific embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the invention can
To be mutually combined.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " on ", D score,
The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outward " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of description the invention and simplifies description, rather than instruction
Or imply that the device or element of meaning with specific orientation, with specific azimuth configuration and operation, therefore must not be understood that
It is the limitation to the invention.Additionally, term " first ", " second " etc. are only used for describing purpose, and it is not intended that indicating
Or imply relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, " first ", " second " etc. are defined
Feature can express or implicitly include one or more this feature.In the description of the invention, unless separately
It is described, " multiple " is meant that two or more.
, it is necessary to explanation, unless otherwise clearly defined and limited, term " is pacified in the description of the invention
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integratedly
Connection；Can mechanically connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary,
Can be two connections of element internal.For the ordinary skill in the art, can be by concrete condition understanding
State concrete meaning of the term in the invention.
Describe the invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
As shown in Figures 1 to 3, a kind of concentration detection system of use integration technology, including divide with controller (not shown)
Gravity type concentration detection apparatus 1, the 3 three kinds of concentration of floating type concentration detection apparatus 2 and differential concentration detection apparatus not connected
Detection means, the method for three kinds of concentration detection apparatus measurement concentration is different, and three kinds of concentration detection apparatus are detected in detect tank 4 respectively
Solution to be detected concentration value and the solution concentration information that will detect be respectively transmitted to controller, controller is by three kinds of concentration
The concentration data that detection means is detected carries out adaptive weighted treatment.The quantity of detect tank 4 is three, gravity type Concentration Testing
Device 1, floating type concentration detection apparatus 2 and differential concentration detection apparatus 3 are corresponding with a detect tank 4 respectively.In detect tank 4
Solution with and from same place solution.The top of detect tank 4 is provided with feed tube 51, and valve is provided with feed tube 51
6, feed tube 51 is the branch line of work liquid pipeline 5 to be detected in workshop appliance.The side wall upper part of detect tank 4 offers overflow
Mouth 401.During detection, in order to ensure identical operating mode, the overflow plane in each detect tank 4 is identical and overflow plane is positioned at same
On individual horizontal plane.Blowoff valve 402 is additionally provided with detect tank 4.Solution to be detected is detected in the case where overflow is kept, kept
Operating mode is consistent, so as to improve accuracy of detection.
Gravity type concentration detection apparatus 1 include force-sensing sensor 101 and first transmitter supporting with it, the first transmitter
It is connected with controller, the force side of force-sensing sensor 101 is hung with the first float 103, the first float by corrosion-resistant messenger wire 102
103 can be placed in inside detect tank 4.During detection, the first float 103 is hung in the detect tank 4 below overfall 401, power is quick
Sensor 101, the corrosion-resistant messenger wire 102 of the first transmitter and part are located at the top of detect tank 4.The concentration of solution to be detected is different,
The density of solution is just different, and the buoyancy that the first float 103 is subject to is just different, so that force-sensing sensor 101 is subject to the first float 103
Pulling force it is just different.There is the relation for determining with solution concentration value in the value of thrust that force-sensing sensor 101 is detected.
As shown in Fig. 2 floating type concentration detection apparatus 2 include the second float 201, one end of the second float 201 is provided with
End face and the float lever 202 vertical with end face are protruded from, the sidepiece of float lever 202 is provided with for detecting the displacement of float lever 202
Displacement transducer 203, displacement transducer 203 is connected with the second transmitter, and the second transmitter is connected with controller, the second float
201 and float lever 202 can be placed in inside detect tank 4.During detection, the second float 201 and float lever 202 are vertically arranged, by second
Float 201 is positioned in the detect tank 4 of the lower section of overfall 401, and part float lever 202 is located at the detect tank 4 of the lower section of overfall 401
It is interior.Displacement transducer 203, the second transmitter and part float lever 202 are located at the top of detect tank 4, and the second float 201 is cylinder
Body, float lever 202 is cylinder, and the second float 201 is bigger with the diameter ratio of float lever 202, floating type concentration detection apparatus 2
It is sensitiveer.Solution concentration is different, and density is just different, and float lever 202 can then produce displacement, displacement transducer relative to initial position
There is determination relation with solution concentration value in 203 shift values for detecting.
As shown in figure 3, differential concentration detection apparatus 3 include fix bar 303, interval setting is provided with fix bar 303
Corrosion resistant first pressure sensor 301 and second pressure sensor 302, one end of fix bar 303 is provided with and the first pressure
Force snesor 301 and the 3rd supporting transmitter 303 of second pressure sensor 302.First pressure sensor 301 and second pressure
Sensor 302 is connected with the 3rd transmitter 303 respectively, and the 3rd transmitter 303 is connected with controller.During detectable concentration, fix bar
303 other end is vertically placed in detect tank 4, and first pressure sensor 301 and second pressure sensor 302 are located at overflow respectively
In the detect tank 4 of the lower section of mouth 401.The lower end of fix bar 303 abuts with the bottom of detect tank 4, and second pressure sensor 302 is close to
At overfall 401, first pressure sensor 301 is near the bottom of detect tank 4.First, second pressure sensor (301,302)
There is determination relation with solution concentration value in pressure difference.
The quantity of detect tank 4 is three, and each detect tank 4 corresponds to gravity type concentration detection apparatus 1, floating type concentration respectively
Detection means 2, differential concentration detection apparatus 3.The top of detect tank 4 is provided with feed tube 51, and valve is provided with feed tube 51
Door 6, feed tube 51 is the branch line of work liquid pipeline 5 to be detected in workshop appliance.The operating mode of detect tank 4 is identical, during detection,
Valve 6 is opened, simultaneously to liquid is poured in detect tank 4, control valve 6 causes three flow velocitys of feed tube 51 to each feed tube 51
It is identical, can so improve the precision of detection.
A kind of detection method of concentration detection system using using integration technology, comprises the following steps：
Step one：Three detect tanks 4 are located in identical operating mode, the flow also phase of solution to be detected for flowing into is controlled
Together；
Step 2：Respectively to pure water is injected in detect tank 4, it is always maintained at overfall 401 and there are flowing out state, using gravity
Formula concentration detection apparatus 1, floating type concentration detection apparatus 2, differential concentration detection apparatus 3 are detected in being placed on pure water, now weighed
The value of thrust F that power formula concentration detection apparatus 1, floating type concentration detection apparatus 2, differential concentration detection apparatus 3 are detected0, it is floating
The position of sub bar 202, pressure differential Δ P0It is initial value；
Step 3：Emptying detect tank 4, solution to be detected is injected in detect tank 4 simultaneously, until overfall 401 has solution
Flow out and be always maintained at this present situation, gravity type concentration detection apparatus 1, floating type concentration detection apparatus 2, differential Concentration Testing dress
3 are put respectively while detecting solution to be detected, and the data is activation that will be detected respectively is to controller；
Step 4：After three concentration datas that controller will be received carry out adaptive weighted treatment, obtain to be detected molten
The ultimate density numerical value of liquid.Being set up in controller has knowledge base, database and inference machine, different weighting in the step 4
Coefficient is called automatically from the knowledge base and database constantly updated by inference machine.
The operation principle of the invention：
First, gravity type concentration detection apparatus 1
1) Density Detection principle and testing process
By taking NaOH (NaOH, alkali, caustic soda, caustic soda) solution as an example, the first float of gravity type concentration detection apparatus 1
103 are fully immersed in solution to be detected, as shown in Figure 1.First float 103 is hung on the stress point of force-sensing sensor 101.
Under conditions of overflow, the constant liquid level in detect tank 4, the volume of the first float 103 is V, as liquid density variation Δ ρ,
The variable quantity of buoyancy suffered by float is：
Δ F=Δ ρ Vg (1)
V and g be constant, g is acceleration of gravity, then fluid density ρ to buoyancy F suffered by float with regard to proportional relation.
(1) solution density ρ0=1.0000g/cm3
Pure water (or running water) is injected in detect tank 4, keeps overfall 401 to there are flowing out stateBy the first float
103 are placed under the liquid level of overfall 401By float hanging on the stress point of force-sensing sensor 101Pure water is floated to float
Power Fc=ρc·V·gForce acting on transducer F0It is float gravity FzSubtract pure water buoyancy Fc,F0=Fz-Fc First transmitter electricity
Stream output signal i0 Realize the conversion of power/electric currentCurrent signal is through A/D conversion generation dataRealize analog quantity/numeral
Amount conversionData are stored in memory D100Complete F0Data storage, the data in 9D100 are 4000 (decimal systems), should
Value can detect numerical value and zero offset to determine by hand-held densitometer.ρ0=1.0000g/cm3{ D100 } (is represented therein
Decimal data)=4000 be density/force acting on transducer relation curve the 1st coordinate points.
(2) solution density increases Δ ρ
A commercially available industrial alkali is taken, is dissolved in the pure water of detect tank 4, cause that solution concentration is uniform by solution self-loopa
Solute increases Δ m, and density increases Δ ρBuoyancy increases Δ FForce acting on transducer F1=F0-ΔFFirst transmitter current is defeated
Go out signal i1 Current signal is stored in D100 through A/D conversion generation dataComplete F1Data storageUse hand-held densitometer
Read density value ρ now1, the data in D100 are corresponding to F1, obtain the 2nd coordinate points of relation curve.
So operation, so that it may to set up ρ/F curve.
(3) the density-concentration table of comparisons
After setting up ρ/F curves, can be according to existing density/mass percentage concentration, density/molar concentration, density/quality-
The volumetric concentration table of comparisons draws corresponding concentration.
(4) concentration unit reduction formula
Can be converted between three kinds of concentration according to existing concentration unit reduction formula, calculated by a kind of concentration
Other two kinds of concentration.
2nd, floating type concentration detection apparatus 2
1) Density Detection principle and testing process
Floating type device for detecting density is as depicted in figs. 1 and 2.Second float 201 is a diameter of d1Cylinder, second float
The height of son 201 is h1, the gravity of the second float 201 is W, the second float 201 and the volume of float lever 202 being dipped in alkali lye
It is V.A diameter of d of float lever 2022, its height in the solution of detect tank 4 is h2.Alkali lye density is ρ.In the overflow of detect tank 4
In the case of, when alkali lye density is ρ+△ ρ, the second float 201 floats, and its submergence volume is V-△ V, is then reached new
Balance.Its buoyancy expression formula is
W=v ρ g (2)
W=(v- Δs v) (ρ+Δ ρ) g (3)
Obtained by formula (2) and formula (3)
According to Fig. 2, △ v are that the height by being immersed in detect tank 4 reduces △ h2Produced volume, i.e.,
△ v are
Obtained by formula (4)~(6)
From formula (7), the diameter d of the second float 2011With the diameter d of float lever 2022The ratio between it is bigger, detection sensitivity is higher,
This is identical with the foundation of hand-held glass density meter.
(1) solution density ρ0=1.0000g/cm3
Pure water (or running water) is injected in detect tank 4, keeps overfall 401 to there are flowing out statePure water is floating to second
The buoyancy F of son 201c=ρc·V·gPoised state：Buoyancy Fc=W gravityThe zero-bit of displacement transducer 203, the second transmitter
Output current i0=4mAThrough A/D conversion generation data, it is stored in D200, zero-bit L0Data are 0000 (decimal system), the value
Can detect numerical value and zero offset by hand-held densitometer to determine.ρ0=1.0000g/cm3, { D200 } (represents that therein ten enter
Data processed)=0000, obtain the 1st coordinate points of the second transmitter displacement signal relation curve.
(2) solution density increases Δ ρ
A commercially available industrial alkali is taken, is dissolved in detect tank 4 (or running water), solution concentration is caused by solution self-loopa
UniformlySolute increases Δ m, and density increases Δ ρBuoyancy increases Δ FFloat floats, and reaches new equalization point w=(v- Δs
v)(ρ+Δρ)gSecond transmitter current output signal i1 Current signal is stored in D200 through A/D conversion generation data,
With hand-held densitometer reading density value ρ now1, the data in D200 are corresponding to L1, obtain the 2nd coordinate points of relation curve.
So operation, so that it may to set up a ρ/L-curve.
There is ρ/L-curve, can be according to existing density/mass percentage concentration, density/molar concentration, density/quality-body
Product concentrations control table draws corresponding concentration.
Can be converted between three kinds of concentration according to existing concentration unit reduction formula, calculated by a kind of concentration
Other two kinds of concentration.
3rd, differential concentration detection apparatus 3
1) Density Detection principle and testing process
Differential device for detecting density structural representation is as shown in Figure 1,3.Sensed using two sets of corrosion resistant first pressures
Device 301, the transmitter 304 of second pressure sensor 302 and the 3rd constitute differential device for detecting density.In Fig. 3, pressure sensor
15 is h with the vertical range of overflow liquid level (or depth or apart from overflow liquid level)1, according to hydrostatic principle,
The static pressure P of the position of first pressure sensor 3011For：
P1=ρ gh1 (8)
The static pressure P of the position of second pressure sensor 3022For：
P2=ρ gh2 (9)
Formula (8) is subtracted each other with formula (9), is obtained：
P1-P2=ρ g (h1-h2) (10)
According to hydrostatic principle, the density of solution is in detect tank 4：
Therefore, under conditions of the overflow of detect tank 4, after two positions of pressure sensor determine, it is possible to according to pressure
Power difference tries to achieve the density of solution.
(1) solution density ρ0=1.0000g/cm3
Pure water (or running water) is injected in detect tank 4, keeps overfall 401 to there are flowing out statePressure P1Through the 3rd
The output current i of transmitter 30401, pressure P2Through the output current i of the 3rd transmitter 30402 Through A/D conversion generation data, subtract each other
Result be stored in D300, the numerical value is pure water (or running water) detection pressure difference Δ P0.The value can be by hand-held densitometer
Numerical value and zero offset is detected to determine.
ρ0=1.0000g/cm3{ D300 } data, obtain the 1st coordinate points of density/pressure difference signal relation curve.
(2) solution density increases Δ ρ
A commercially available industrial alkali is taken, is dissolved in the pure water of detect tank 4 (or running water), solution is caused by solution self-loopa
Even concentrationSolute increases Δ m, and density increases Δ ρPressure P1Through the output current i of the 3rd transmitter 3041, pressure P2Through
The output current i of three transmitter 3042 Through A/D conversion generation data, the result subtracted each other is stored in D300, and the numerical value is Jia one
Pressure difference Δ P is detected after part alkali1Data, with hand-held densitometer detection density value ρ1。
ρ1{ D300 } data, obtain the 2nd coordinate points of density/pressure difference signal relation curve.
So operation, so that it may to set up a ρ/Δ P curves.
There are ρ/Δ P curves, can be according to existing density/mass percentage concentration, density/molar concentration, density/quality-
The volumetric concentration table of comparisons draws corresponding concentration.
Can be converted between three kinds of concentration according to existing concentration unit reduction formula, calculated by a kind of concentration
Other two kinds of concentration.
4th, data fusion
Last controller is merged to the data of three kinds of sensors, i.e., set up in controller knowledge base, database and
The data of three kinds of sensors during on-line checking, adaptive weighted treatment are carried out according to different concentration by inference machine, and it is different
Weight coefficient be by inference machine from constantly update knowledge base and database in call automatically.
Three sensor adaptive weighting data fusion patterns of knowledge based storehouse, database and inference machine, belong to intelligence
The respective advantage of three kinds of sensors is integrated into whole advantage by control theory category, this pattern, under different concentration, three kinds
The sensitivity of sensor detection is different, and the precision of the data for measuring is just different, and the weight coefficient of every kind of detection data is just different,
The ratio of measurement sensitivity weight coefficient high is great, therefore, profit in this way, in alkali concn from 0g/L to 400g/L whole model
In enclosing, the deviation of detected value is all not more than ± 0.25%, greatly improves the precision of Concentration Testing.
The preferred embodiment of the invention is the foregoing is only, creation is not intended to limit the invention, it is all at this
Within the spirit and principle of innovation and creation, any modification, equivalent substitution and improvements made etc. should be included in the invention
Protection domain within.
Claims (10)
1. a kind of concentration detection system of use integration technology, it is characterised in that：Including the gravity type being connected respectively with controller
Concentration detection apparatus (1), (3) three kinds of concentration detection apparatus of floating type concentration detection apparatus (2) and differential concentration detection apparatus,
Three kinds of concentration detection apparatus detect the concentration value of the solution to be detected in corrosion resistant detect tank (4) and molten by what is detected respectively
Liquid concentration information is respectively transmitted to controller；
The quantity of the detect tank (4) is three, gravity type concentration detection apparatus (1), floating type concentration detection apparatus (2) and pressure
Differential concentration detection apparatus (3) are corresponding with a detect tank (4) respectively, and the solution in detect tank (4) derives from same place.
2. the concentration detection system of use integration technology according to claim 1, it is characterised in that：The gravity type concentration
Detection means (1) includes force-sensing sensor (101) and first transmitter supporting with it, and the first transmitter is connected with controller,
The force side of force-sensing sensor (101) is hung with the first float (103), the first float (103) energy by corrosion-resistant messenger wire (102)
It is placed in detect tank (4) internal.
3. the concentration detection system of use integration technology according to claim 2, it is characterised in that：During detection, by first
Float (103) hanging is interior in detect tank (4), force-sensing sensor (101), the first transmitter and part corrosion-resistant messenger wire (102) position
In detect tank (4) top.
4. the concentration detection system of use integration technology according to claim 1, it is characterised in that：The floating type concentration
Detection means (2) includes the second float (201), and one end of the second float (201) is provided with and protrudes from end face and vertical with end face
Float lever (202), the sidepiece of float lever (202) is provided with the displacement transducer for detecting float lever (202) displacement
(203), displacement transducer (203) is connected with the second transmitter, and the second transmitter is connected with controller, the second float (201) and
It is internal that float lever (202) can be placed in detect tank (4).
5. the concentration detection system of use integration technology according to claim 4, it is characterised in that：During detection, second floats
Sub (201), float lever (202) are vertically arranged, and the second float (201) are positioned in detect tank (4), part float lever (202)
In the detect tank (4), displacement transducer (203), the second transmitter and part float lever (202) positioned at detect tank (4) top,
Second float (201) is cylinder, and float lever (202) is cylinder, and the second float (201) is straight with float lever (202)
The ratio between footpath is bigger, and floating type concentration detection apparatus (2) are sensitiveer.
6. the concentration detection system of use integration technology according to claim 1, it is characterised in that：The differential concentration
Detection means (3) includes fix bar (303), and spaced corrosion resistant first pressure sensing is provided with fix bar (303)
Device (301) and second pressure sensor (302), one end of fix bar (303) are provided with and first pressure sensor (301) and
The 3rd supporting transmitter (303) of two pressure sensors (302), first pressure sensor (301) and second pressure sensor
(302) it is connected with the 3rd transmitter (303) respectively, the 3rd transmitter (303) is connected with controller, during detectable concentration, fix bar
(303) the other end is vertically placed in detect tank (4), and first pressure sensor (301) and second pressure sensor (302) are respectively
In detect tank (4).
7. the concentration detection system of use integration technology according to claim 6, it is characterised in that：It is described solid during detection
The lower end of fixed pole (303) is abutted with the bottom of detect tank (4), and second pressure sensor (302) is close at liquid level of solution to be detected,
First pressure sensor (301) is near the bottom of detect tank (4).
8. the concentration detection system of use integration technology according to claim 1, it is characterised in that：The detect tank (4)
Top be provided with feed tube (51), be provided with valve (6) on feed tube (51), the feed tube (51) in workshop appliance to treat
The branch line of detection work liquid pipeline (5), the side wall upper part of the detect tank (4) offers overfall (401), during detection,
Overflow liquid level in each detect tank (4) is located on same horizontal plane.
9. the detection method of the concentration detection system described in a kind of any one of utilization claim 1 to 8, it is characterised in that including
Following steps：
Step one：By three detect tanks (4) in identical operating mode, control the flow of the solution to be detected of inflow also identical；
Step 2：Respectively to injection pure water in detect tank (4), it is always maintained at overfall (401) and there are flowing out state, using gravity
Formula concentration detection apparatus (1), floating type concentration detection apparatus (2), differential concentration detection apparatus (3) are placed on detection in pure water,
Now gravity type concentration detection apparatus (1), floating type concentration detection apparatus (2), differential concentration detection apparatus (3) detect number
According to being initial value；
Step 3：Emptying detect tank (4), solution to be detected is injected in detect tank (4) simultaneously, until overfall (401) has molten
Liquid flows out and is always maintained at this present situation, gravity type concentration detection apparatus (1), floating type concentration detection apparatus (2), differential concentration
Detection means (3) detects solution to be detected simultaneously respectively, and the data is activation that will be detected respectively is to controller；
Step 4：After three concentration datas that controller will be received carry out adaptive weighted treatment, solution to be detected is obtained
Ultimate density numerical value.
10. detection method according to claim 9, it is characterised in that：Being set up in the controller has knowledge base, database
And inference machine, different weight coefficients is by inference machine from the knowledge base and database constantly updated in the step 4
In automatic call.
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