CN107907444A - Fluid density real-time measurement apparatus - Google Patents
Fluid density real-time measurement apparatus Download PDFInfo
- Publication number
- CN107907444A CN107907444A CN201711208886.9A CN201711208886A CN107907444A CN 107907444 A CN107907444 A CN 107907444A CN 201711208886 A CN201711208886 A CN 201711208886A CN 107907444 A CN107907444 A CN 107907444A
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- CN
- China
- Prior art keywords
- layer screen
- screen
- sensor
- fluid density
- measurement apparatus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- 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
- G01N9/08—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring buoyant force of solid materials by weighing both in air and in a liquid
Abstract
The invention discloses a kind of fluid density real-time measurement apparatus, including sensor, the sensor is connected by supporting rod with the ceramic buoyant spheres being placed in testing liquid, and be fixed on and which is provided with the top of the liquid container for placing mouth, the supporting rod is fixedly connected after passing perpendicularly through the placement mouth with ceramic buoyant spheres；The liquid container is integrally bell-like and is three-decker, and the first layer screen is made of the grizzly bar more with vertical arrangement, and the second layer screen is made of the grizzly bar that more horizontal shapes arrange, and the third layer screen is made of the grizzly bar that more prismatics arrange.The present invention realizes the purpose in the dynamic and static lower fluid density of measurement in real time, while liquid container effectively reduces the measurement error of testing liquid flowing generation using three layers of structure of grid, improves measurement accuracy.
Description
Technical field
The present invention relates to field of measuring technique, more particularly to a kind of fluid density real-time measurement apparatus.
Background technology
It is currently based on float-type liquid density measurement device made of Archimedes' principle and is being related to liquid quality, body
Product, density and the every field of flow measurement have been obtained for being widely applied, its operation principle is；Force cell measurement is outstanding
The method for hanging float messenger wire tension force, fluid density is calculated by formula.
Existing liquid density measurement device has the following disadvantages：1st, it is typically all partly to be immersed in the water, and volume is larger,
Carry, using all very inconvenient；2nd, measurement result can be had an impact by being attached to the liquid flowing on float surface, if do not taken
Measure eliminates above-mentioned influence, applies it and requires the occasion of high accuracy measurement fluid density to be restricted at some.
The content of the invention
It is an object of the invention to provide it is a kind of can be in the device of the dynamic and static lower fluid density of measurement in real time, while effectively
Reduce the measurement error that testing liquid flowing produces.
To achieve the above object, the technical solution adopted in the present invention is：
A kind of fluid density real-time measurement apparatus, including sensor, the sensor is by supporting rod and is placed in testing liquid
Ceramic buoyant spheres be connected, and be fixed on and which is provided with the top of the liquid container for placing mouth, the supporting rod passes perpendicularly through
It is fixedly connected after the placement mouth with ceramic buoyant spheres；The liquid container is integrally bell-like and is three-decker, is followed successively by place
In outermost first layer screen, the second layer screen in intermediate layer and the third layer screen in innermost layer, adjacent two layers
Connected between screen by bonding agent, the first layer screen is made of the grizzly bar more with vertical arrangement, the second layer screen
It is made of the grizzly bar of more horizontal shape arrangements, the third layer screen is made of the grizzly bar that more prismatics arrange, third layer screen
Top is convexly equipped with externally threaded protrusion；Oval fixed frame is covered with the top of the sensor, is opened on the inside of the fixed frame
Equipped with internal thread corresponding with third layer screen tip male thread.
Further, the grizzly bar on the first layer screen, second layer screen and third layer screen is made by ceramics.
Further, the placement mouth connects after running through third layer screen with its inner cavity.
Further, the sensor uses balance-type type sensor of the prior art, either tensile force type sensor or
Single sensor, or the sensor group being made of multiple sensors.
Further, the screen is wrapped in one layer in adjacent of screen.
Further, the ceramic buoyant spheres are the hollow-core construction with wall thickness.
Further, the supporting rod makes for hard material, and bottom is hanging and with being bonded in one at the top of ceramic buoyant spheres
Rise.
Further, the through hole that the lead of the sensor is opened up by fixed frame side wall connects external reading after drawing
Device.
Further, the top of the third layer screen is structure as a whole with externally threaded protrusion with third layer screen.
The beneficial effects of the invention are as follows：
The ceramic screen being used cooperatively in the present invention can upset the impact that the flowing of outside liquid forms ceramic buoyant spheres, weaken
Liquid flows the interference to ceramic buoyant spheres, effectively reduces the measurement error that testing liquid flowing produces, improves measurement accuracy；It is logical
Cross and change in electric caused by elastic strain is occurred as measuring signal using the foil gauge in sensor, there is measurement continuous
Property and real-time；The present apparatus need to only demarcate in the water that proportion is 1, buoyancy change of the ceramic buoyant spheres in various concentrations liquid
Amount, the changing value of electric signal reading power is converted to through sensor, you can the opposite proportion with water is drawn according to signal intensity, so that
The strength of fluid under flowing or inactive state is measured, data processing is easy and effective；Due to using ceramic material, so the present apparatus is resistance to
Corrosion, good weatherability, while present apparatus sensor replace design to be easy to assemble, easy, therefore can solve spirit by periodically replacing
The problem of sensitivity is poor.
Brief description of the drawings
Fig. 1 is the internal structure schematic diagram of fluid present invention density real-time measurement apparatus.
Fig. 2 is the front view of fluid present invention density real-time measurement apparatus.
Fig. 3 is the top view of fluid present invention density real-time measurement apparatus.
Fig. 4 is the schematic diagram of first layer screen in fluid present invention density real-time measurement apparatus.
Fig. 5 is the schematic diagram of second layer screen in fluid present invention density real-time measurement apparatus.
Attached figure label is：1 is sensor, and 2 be fixed frame, and 3 be first layer screen, and 4 be second layer screen, and 5 be the 3rd
Layer screen, 6 be lead, and 7 be supporting rod, and 8 be ceramic buoyant spheres.
Embodiment
The embodiment of the present invention is described in detail below in conjunction with the accompanying drawings.
Embodiment one
As shown in Fig. 1 ~ Fig. 5, fluid density real-time measurement apparatus, including sensor 1, the sensor 1 is by supporting rod 7 with putting
Ceramic buoyant spheres 8 in testing liquid are connected, and are fixed on and which is provided with the top of the liquid container for placing mouth, the branch
Strut 7 is fixedly connected after passing perpendicularly through the placement mouth with ceramic buoyant spheres 8；The liquid container is integrally bell-like and for three layers
Structure, is followed successively by outermost first layer screen 3, the second layer screen 4 in intermediate layer and the in innermost layer the 3rd
Layer screen 5, is connected between adjacent two layers screen, the first layer screen 3 is by more with the grizzly bar structure of vertical arrangement by bonding agent
Into the second layer screen 4 is made of the grizzly bar that more horizontal shapes arrange, the grid that the third layer screen 5 is arranged by more prismatics
Bar is formed, and the top of third layer screen 5 is convexly equipped with externally threaded protrusion；The top of the sensor 1 is covered with oval fixation
Frame 2, the inner side of the fixed frame 2 offer internal thread corresponding with 5 tip male thread of third layer screen；First layer screen 3,
Grizzly bar on two layers of screen 4 and third layer screen 5 is made by ceramics, places after mouth runs through third layer screen 5 and connects with its inner cavity
It is logical；Sensor 1 uses balance-type type sensor of the prior art, either tensile force type sensor either single sensor or
The sensor group being made of multiple sensors；Screen is wrapped in one layer in adjacent of screen, and ceramic buoyant spheres 8 are with wall thickness
Hollow-core construction；Supporting rod 7 makes for hard material, and bottom is hanging and bonds together with the ceramic top of buoyant spheres 8；Sensor 1
The through hole that is opened up by 2 side wall of fixed frame of lead 6 draw after connect external reading plotter；The top tape of third layer screen 5
There is externally threaded protrusion to be structure as a whole with third layer screen 5.
When measuring strength of fluid, pass through：
Step 1：The present apparatus is demarcated in the water that proportion is 1 first, after ceramic buoyant spheres 8 are immersed in the water, ceramic buoyancy
Ball 8 acts on the power on sensor 1, is making a concerted effort for buoyancy suffered by gravity and ceramic buoyant spheres 8, i.e.,：
FNominally=G-FMark is floating
In formula：FNominallyMark the gravimetric value that Time Pick-off Units 1 measure in water for the present apparatus, G is ceramic buoyant spheres 8 itself for constant
Weight, G=mg, FMark is floating=ρWaterGv, ρWaterFor the density of constant, that is, water, g is constant, that is, acceleration of gravity, and v is that ceramics are floating for constant
The volume for the water that power ball 8 arranges, it is equal to the volume of ceramic buoyant spheres 8；
Step 2：Calibration finishes, and after ceramic buoyant spheres 8 are immersed testing liquid, ceramic buoyant spheres 8 are acted on sensor 1
Power, is equally making a concerted effort for buoyancy suffered by gravity and ceramic buoyant spheres 8, i.e.,：
FClaim=G-FIt is floating
In formula：FClaimFor the present apparatus gravimetric value that sensor 1 measures in testing liquid, FIt is floating=ρLiquidGv, ρLiquidFor testing liquid
Density, so as to draw
FFloating/ FMark is floating=ρLiquidgv/ρWatergv=（G-FClaim）/（G-FNominally）
Drawn by above formula, testing liquid density is：
ρLiquid=（G-FClaim）ρWater/（G-FNominally）。
The embodiment of the above, simply presently preferred embodiments of the present invention, not limits practical range of the invention,
Therefore the equivalent change or modification that all construction, feature and principles according to described in the scope of the claims of the present invention are done, this hair should all be included in
In bright claim.
Claims (9)
1. a kind of fluid density real-time measurement apparatus, including sensor（1）, it is characterised in that the sensor（1）Pass through support
Bar（7）With the ceramic buoyant spheres being placed in testing liquid（8）It is connected, and is fixed on the liquid container which is provided with and place mouth
Top, the supporting rod（7）Pass perpendicularly through it is described placement mouth after with ceramic buoyant spheres（8）It is fixedly connected；The liquid container is whole
Body is bell-like and is three-decker, is followed successively by outermost first layer screen（3）, second layer screen in intermediate layer
（4）With the third layer screen in innermost layer（5）, connected by bonding agent between adjacent two layers screen, the first layer screen
（3）It is made of the grizzly bar more with vertical arrangement, the second layer screen（4）It is made of the grizzly bar of more horizontal shapes arrangements, described the
Three layers of screen（5）It is made of the grizzly bar of more prismatic arrangements, third layer screen（5）Top be convexly equipped with externally threaded protrusion；
The sensor（1）Top be covered with oval fixed frame（2）, the fixed frame（2）Inner side offer and third layer screen
（5）The corresponding internal thread of tip male thread.
2. fluid density real-time measurement apparatus according to claim 1, it is characterised in that the first layer screen（3）,
Two layers of screen（4）With third layer screen（5）On grizzly bar be made by ceramics.
3. fluid density real-time measurement apparatus according to claim 1, it is characterised in that the placement mouth runs through third layer
Screen（5）Connected afterwards with its inner cavity.
4. fluid density real-time measurement apparatus according to claim 1, it is characterised in that the sensor（1）Using existing
There is the balance-type type sensor in technology, either tensile force type sensor either single sensor or is made of multiple sensors
Sensor group.
5. fluid density real-time measurement apparatus according to claim 1, it is characterised in that the screen is wrapped in adjacent
One layer of screen.
6. fluid density real-time measurement apparatus according to claim 1, it is characterised in that the ceramics buoyant spheres（8）For
Hollow-core construction with wall thickness.
7. fluid density real-time measurement apparatus according to claim 1, it is characterised in that the supporting rod（7）For hard
Material makes, bottom it is hanging and with ceramic buoyant spheres（8）Top bonds together.
8. fluid density real-time measurement apparatus according to claim 1, it is characterised in that the sensor（1）Lead
（6）Pass through fixed frame（2）The through hole that side wall opens up connects external reading plotter after drawing.
9. fluid density real-time measurement apparatus according to claim 1, it is characterised in that the third layer screen（5）'s
Top is with externally threaded raised and third layer screen（5）It is structure as a whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711208886.9A CN107907444A (en) | 2017-11-27 | 2017-11-27 | Fluid density real-time measurement apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711208886.9A CN107907444A (en) | 2017-11-27 | 2017-11-27 | Fluid density real-time measurement apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN107907444A true CN107907444A (en) | 2018-04-13 |
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ID=61847994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711208886.9A Pending CN107907444A (en) | 2017-11-27 | 2017-11-27 | Fluid density real-time measurement apparatus |
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| CN (1) | CN107907444A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109932279A (en) * | 2019-03-19 | 2019-06-25 | 河海大学 | A kind of apparatus and method using bulk strain measurement fluid density |
| CN110646323A (en) * | 2019-09-30 | 2020-01-03 | 上海化工院检测有限公司 | Device and method for measuring liquid density by using equal-volume static buoyancy comparison method |
| CN112284969A (en) * | 2020-10-22 | 2021-01-29 | 东来涂料技术（上海）股份有限公司 | Method for measuring density of coating |
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| CN2241881Y (en) * | 1995-08-01 | 1996-12-04 | 刘玉德 | Built-in total immersion float-type liquid density measuring instrument |
| CN2308092Y (en) * | 1997-07-31 | 1999-02-17 | 丰守身 | Determining meter for liquid density |
| CN2380916Y (en) * | 1999-03-26 | 2000-05-31 | 李明 | Built-in all-immersed-float bidirectional-force-measuring type liquid-density measure instrument |
| CN1374513A (en) * | 2002-04-06 | 2002-10-16 | 徐晗 | Magnetostriction-type liquid level, density and mass measurer |
| CN103091202A (en) * | 2011-11-07 | 2013-05-08 | 张遥远 | Liquid density measurement device |
| CN107300512A (en) * | 2017-08-15 | 2017-10-27 | 周滨 | Intelligent densitometer |
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2017
- 2017-11-27 CN CN201711208886.9A patent/CN107907444A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2241881Y (en) * | 1995-08-01 | 1996-12-04 | 刘玉德 | Built-in total immersion float-type liquid density measuring instrument |
| CN2308092Y (en) * | 1997-07-31 | 1999-02-17 | 丰守身 | Determining meter for liquid density |
| CN2380916Y (en) * | 1999-03-26 | 2000-05-31 | 李明 | Built-in all-immersed-float bidirectional-force-measuring type liquid-density measure instrument |
| CN1374513A (en) * | 2002-04-06 | 2002-10-16 | 徐晗 | Magnetostriction-type liquid level, density and mass measurer |
| CN103091202A (en) * | 2011-11-07 | 2013-05-08 | 张遥远 | Liquid density measurement device |
| CN107300512A (en) * | 2017-08-15 | 2017-10-27 | 周滨 | Intelligent densitometer |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109932279A (en) * | 2019-03-19 | 2019-06-25 | 河海大学 | A kind of apparatus and method using bulk strain measurement fluid density |
| CN109932279B (en) * | 2019-03-19 | 2021-04-06 | 河海大学 | Device and method for measuring liquid density by using volume strain |
| CN110646323A (en) * | 2019-09-30 | 2020-01-03 | 上海化工院检测有限公司 | Device and method for measuring liquid density by using equal-volume static buoyancy comparison method |
| CN112284969A (en) * | 2020-10-22 | 2021-01-29 | 东来涂料技术（上海）股份有限公司 | Method for measuring density of coating |
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Application publication date: 20180413 |