CN207502450U - A kind of equipment that moisture content is measured using radio frequency admittance principle - Google Patents
A kind of equipment that moisture content is measured using radio frequency admittance principle Download PDFInfo
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- CN207502450U CN207502450U CN201721289437.7U CN201721289437U CN207502450U CN 207502450 U CN207502450 U CN 207502450U CN 201721289437 U CN201721289437 U CN 201721289437U CN 207502450 U CN207502450 U CN 207502450U
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- radio frequency
- frequency admittance
- probe
- admittance
- moisture content
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- 239000000523 sample Substances 0.000 claims abstract description 29
- 238000005259 measurement Methods 0.000 claims abstract description 21
- 230000005611 electricity Effects 0.000 claims description 6
- 230000010355 oscillation Effects 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 22
- 238000000034 method Methods 0.000 description 16
- 238000012544 monitoring process Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 2
- 238000011088 calibration curve Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model discloses a kind of equipment that moisture content is measured using radio frequency admittance principle, the equipment includes canister (1), from top to bottom stretches into radio frequency admittance probe (2) and admittance measurement unit (4) in the canister (1), the lower end of the radio frequency admittance probe (2) is connected by resistance (3) with the canister (1), canister (1) ground connection.The equipment of the utility model can use 0 100% gamut of radio frequency admittance principle to measure moisture content.
Description
Technical field
The utility model is related to measurement of water ratio technical fields, and in particular to a kind of aqueous using the measurement of radio frequency admittance principle
The equipment of rate.
Background technology
The analyzer of water content on domestic and international market can be divided into electrical characteristics method, ray is inhaled according to the difference of measuring principle at present
Receipts method and densimetry.Wherein electrical characteristics analyzer of water content can also be divided into capacitance method, shortwave method, microwave method and impedance method etc..
The measuring principle of electrical characteristics water-containing machine be all based on oil and water difference in dielectric constant, and dielectric constant with oil
Water blending ratio is related, therefore when medium flows through specific sensor, by electricity component, can detect dielectric constant
The variation of the physical quantitys such as (i.e. moisture content) variation caused capacitance, inductance, impedance and (or) frequency of oscillation, known to recycling
The moisture content in oil can be obtained in mathematical formulae indirectly.
Capacitance method, shortwave method are according to oil, the conductivity of water or the different electrical principles of dielectric constant and the instrument that designs,
The monitoring of its moisture content is related with the free phase of water, can not realize 0~100% linear monitoring moisture content；
Microwave absorption method is the instrument for having the measuring principle of apparent gap according to oil, water to the absorption of shortwave microwave and designing
Table, but since microwave, shortwave act on molecule, it is related with grease state (Water-In-Oil or oil-in-water), therefore from the principle not
Energy gamut monitoring moisture content can not also realize 0~100% linear monitoring moisture content；
Attenuation sensors are inconvenient for use since there are radioactive sources, so having stopped using currently on the market.
Densitometer method is different with the density of water by oil, and the density of oil and the density of water is set in advance, surveys in real time
The combined density of blending agent is measured, grease ratio is then calculated by formula.This measuring method measurement error is larger, because oily
Density with water is not changeless, and with the variation of mining phase oil reservoir layer position, the density of oil and water is also constantly changing,
And hybrid density is difficult to measure accurately if containing bubble in medium, and measurement result is impacted.
Utility model content
The purpose of this utility model is to provide a kind of equipment that moisture content is measured using radio frequency admittance principle, this practicality is new
The equipment of type can use radio frequency admittance principle 0-100% gamuts to measure moisture content.
To achieve the above object, the utility model provides a kind of equipment that moisture content is measured using radio frequency admittance principle, institute
Equipment is stated to include canister, from top to bottom stretch into radio frequency admittance probe and admittance measurement unit in the canister,
The lower end of the radio frequency admittance probe is connected by resistance with the canister, canister ground connection.
Optionally, the admittance measurement unit include electric bridge, oscillator and demodulator, the electric bridge respectively with the oscillation
Device is connected with radio frequency admittance probe and demodulator.
Optionally, the electric bridge includes RDA capacitances, probe capacitance, reference capacitance and inductance, and the radio frequency admittance probe leads to
It crosses reference capacitance to connect with the oscillator, the radio frequency admittance probe is connected by RDA capacitances with the oscillator, described to penetrate
Frequency admittance probe is connected by probe capacitance and inductance with the demodulator, and the demodulator passes through inductance and the oscillator string
Connection.
Optionally, the radio frequency admittance probe is connected by center line with oscillator.
Optionally, the periphery of the center line is provided with cable capacitance.
The utility model also provides a kind of method that moisture content is measured using radio frequency admittance principle, and this method includes：
A, the capacitance ε and electric current of oil product to be measured in canister are placed on using measuring apparatus provided by the utility model
R, capacitance and electric current are exported by the adjuster；
B, it is compared after the capacitance ε and electric current R being multiplied with the moisture content on standard curve；The standard is bent
Line is 0 weight %, 10 weight %, 20 weight %, 30 weight %, 40 weight %, 50 weight %, 60 weight %, 70 by water content
Weight %, the octane of 80 weight % and 90 weight % and water are formed, and abscissa is the product of capacitance ε and electric current R, indulges and sits
It is designated as moisture content.
Optionally, the density of the oil product to be measured is less than 1.05 grams per milliliters, and boiling point is less than 300 DEG C.
The utility model has the following advantages that：
1st, moisture content is measured using radio frequency admittance principle 0-100% gamuts；
2nd, it is not influenced in a certain range by oil density, viscosity, temperature, a plurality of calibration curve can be provided, one
Instrument can measure oil products；
3rd, it is rational in infrastructure, it is easy to use, it safeguards simple.
Description of the drawings
Fig. 1 is equipment a kind of specific embodiment provided by the utility model that moisture content is measured using radio frequency admittance principle
Structure diagram.
Specific embodiment
The following examples illustrate the utility model, but is not intended to limit the scope of the present invention.
As shown in Figure 1, the utility model provides a kind of equipment that moisture content is measured using radio frequency admittance principle, the equipment
Including canister 1, from top to bottom stretch into radio frequency admittance probe 2 and admittance measurement unit 4 in the canister 1, institute
The lower end for stating radio frequency admittance probe 2 is connected by resistance 3 with the canister 1, and canister 1 is grounded.The utility model carries
The water-containing machine of confession uses radio frequency admittance technology, which was once widely used in liquid, the control of solid material position interface level measurement, and obtained
Extraordinary effect.The meaning of admittance is the inverse of electricity middle impedance in radio frequency admittance water-containing machine, it is by resistive compositions, electricity
Capacitive ingredient, inductive component integrate, and radio frequency, that is, high frequency radio spectrum, so radio frequency admittance can be understood as using high frequency
Radio wave measurement admittance.
Admittance measurement unit is according to electrical bridge principle, as shown in Figure 1, the admittance measurement unit 4 includes electric bridge 41, oscillation
Device 42 and demodulator 43, the electric bridge 41 are connected respectively with the oscillator 42 with radio frequency admittance probe 2 and demodulator 43, specifically
Ground, the electric bridge 41 include RDA capacitances 411, probe capacitance 412, reference capacitance 413 and inductance 414, the radio frequency admittance probe
2 are connected by reference capacitance 413 with the oscillator 42, and the radio frequency admittance probe 2 passes through RDA capacitances 411 and the oscillation
Device 42 is connected, and the radio frequency admittance probe 2 is connected by probe capacitance 412 and inductance 414 with the demodulator 43, the demodulation
Device 43 is connected by inductance 414 with the oscillator 42.There is a high frequency key player on a team oscillator to be used for providing inside admittance measurement unit
Stable measuring signal source, for measuring sensing and the capacitance on element or admittance.Radio frequency admittance water-containing machine has improved
Linear and anti-bridging performance.It has in two wiring of input/output simultaneously built-in RFI (radio frequency interference) protective devices and
Built-in temperature compensation unit ensures the stability and accuracy of measurement result.
As shown in Figure 1, being stably connected with oscillator for convenience, the radio frequency admittance probe 2 passes through center line 21 and oscillation
Device 42 is connected, and the periphery of the center line 21 can be provided with cable capacitance 22, so as to prevent the interference of extraneous electromagnetic wave.
The utility model also provides a kind of method that moisture content is measured using radio frequency admittance principle, and this method includes：A, it adopts
The capacitance ε and electric current R, capacitance and electricity of oil product to be measured in canister 1 are placed on measuring apparatus provided by the utility model
Stream is exported by the adjuster 43；Preferably, b, the capacitance ε and electric current R are multiplied after with it is aqueous on standard curve
Rate is compared；The standard curve by water content for 0 weight %, 10 weight %, 20 weight %, 30 weight %, 40 weight %,
50 weight %, 60 weight %, 70 weight %, 80 weight % and 90 weight % octane and water formed, abscissa is electricity
Hold the product of ε and electric current R, ordinate is moisture content.Moisture content is measured using the method for the utility model, deviation is 5%
Within, and the density of the oil product to be measured is less than 1.05 grams per milliliters, and boiling point is less than 300 DEG C, and measurement effect is more preferable, deviation base
This is within 3%.
In addition, this analyzer of water content of the utility model can be connected with mating cell phone application software, pass through intelligent hand
Machine directly reads the moisture content currently measured, convenient reading, directly can install APP by mobile phone and carry out digital independent, using penetrating
Frequency admittance principle, which measures, adapts to the measurement of 0-100% gamuts.Memory space is big, stores a plurality of experiment curv, adapts to oil products
Measurement, there is temperature compensation function, influence of the discharge temperature to measurement pop one's head in spontaneous hot function, prevents wax deposition from influencing to survey
Accuracy of measurement.
Although above having made detailed description to the utility model with generality explanation and specific embodiment,
On the basis of the utility model, it can be made some modifications or improvements, this is apparent to those skilled in the art
's.Therefore, the these modifications or improvements on the basis of without departing from the spirit of the present invention, belonging to the utility model will
Seek the range of protection.
Claims (5)
1. a kind of equipment that moisture content is measured using radio frequency admittance principle, which is characterized in that the equipment includes canister
(1), the radio frequency admittance probe (2) and admittance measurement unit (4) in the canister (1) are from top to bottom stretched into, it is described to penetrate
The lower end of frequency admittance probe (2) is connected by resistance (3) with the canister (1), canister (1) ground connection.
2. equipment according to claim 1, which is characterized in that the admittance measurement unit (4) includes electric bridge (41), oscillation
Device (42) and demodulator (43), the electric bridge (41) respectively with the oscillator (42) and radio frequency admittance probe (2) and demodulator
(43) it is connected.
3. equipment according to claim 2, which is characterized in that the electric bridge (41) includes RDA capacitances (411), probe electricity
Hold (412), reference capacitance (413) and inductance (414), the radio frequency admittance probe (2) to shake with described by reference capacitance (413)
Device (42) series connection is swung, the radio frequency admittance probe (2) is connected by RDA capacitances (411) with the oscillator (42), the radio frequency
Admittance probe (2) is connected by probe capacitance (412) and inductance (414) with the demodulator (43), and the demodulator (43) is logical
Inductance (414) is crossed to connect with the oscillator (42).
4. equipment according to claim 2, which is characterized in that the radio frequency admittance probe (2) by center line (21) with
Oscillator (42) is connected.
5. equipment according to claim 4, which is characterized in that the periphery of the center line (21) is provided with cable capacitance
(22)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721289437.7U CN207502450U (en) | 2017-09-30 | 2017-09-30 | A kind of equipment that moisture content is measured using radio frequency admittance principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721289437.7U CN207502450U (en) | 2017-09-30 | 2017-09-30 | A kind of equipment that moisture content is measured using radio frequency admittance principle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207502450U true CN207502450U (en) | 2018-06-15 |
Family
ID=62500025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721289437.7U Active CN207502450U (en) | 2017-09-30 | 2017-09-30 | A kind of equipment that moisture content is measured using radio frequency admittance principle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207502450U (en) |
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2017
- 2017-09-30 CN CN201721289437.7U patent/CN207502450U/en active Active
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Effective date of registration: 20200901 Address after: No.8 Fuyang Road, Jingjiang City, Taizhou City, Jiangsu Province Patentee after: Jiangsu Yong Sheng Automation Technology Co.,Ltd. Address before: 214500 3, room 1302, Zhongtian city landscape, Jingjiang City, Taizhou, Jiangsu Patentee before: Chen Yong |