CN2291664Y - Ultrasonic emulsion on-line concentration meter - Google Patents
Ultrasonic emulsion on-line concentration meter Download PDFInfo
- Publication number
- CN2291664Y CN2291664Y CN 97202740 CN97202740U CN2291664Y CN 2291664 Y CN2291664 Y CN 2291664Y CN 97202740 CN97202740 CN 97202740 CN 97202740 U CN97202740 U CN 97202740U CN 2291664 Y CN2291664 Y CN 2291664Y
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- circuit
- emulsion
- concentration
- temperature
- ultrasonic
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- Expired - Fee Related
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The utility model relates to an ultrasonic emulsion on-line concentration meter, which comprises an ultrasonic probe 25, a temperature measuring circuit, an A/D converter, address, control and data buses 11, a CPU 9, an ROM 12 for storing the relationship of temperature, concentration and sound time of emulsion, an RAM, an I/O expander 17, a reset monostable device 23, a transmitting circuit 24, an amplifier 22, a zero crossing level detecting circuit 21, a time measuring door 20, a high speed timer 19, a crystal oscillator 14, an end monostable device 15, a breadth measuring door 16 and a breadth measuring frequency divider 13. The measuring concentration and the temperature sensitivity achieve 0.01% and 0.01 DEG C; the precision is superior to 0.1% and 0.1 DEG C. The ultrasonic emulsion on-line concentration meter can automatically eliminate sound time mutation or error data of over hours. The utility model has strong anti-interference capability, and quick and accurate in-line detection.
Description
The utility model relates to a kind of ultrasonic liquid concentration detection apparatus, is particularly useful for the on-line measurement of cold-rolling emulsion concentration.
In cold continuous rolling is produced, the concentration height of emulsion has a significant impact output, the quality of steel plate, the available technology adopting chemical analysis method, promptly get 100 milliliters of emulsions, add and be heated to 100 ℃ and kept 4-8 hour after the acid, profit is thoroughly separated, measure the emulsion volume of separating out again and measure its concentration, this method is consuming time, can not in time instruct production control, precision low again (for ± 0.1%), if emulsion is not thoroughly separated out as yet or part oil to stick on the vessel wall precision lower.Chinese patent CN10624416 discloses a kind of " ultrasonic tester of liquid concentration ", be to be used for electrolytic process to produce the online detection of hydrogen peroxide concentration or the analysis of components of the mixed liquid of other binary, form by probe box part and circuit two parts of being placed in the fluid to be measured, settle temperature probe and ultrasonic probe in the probe box, temperature probe links to each other with circuit part through cable with ultrasonic probe, concerns the concentration that calculates fluid to be measured when the hydrogen peroxide concentration that stores among the fluid temperature that this concentration detector is measured probe, when sound and the ROM, temperature and sound.
The purpose of this utility model is to improve on the basis of above-mentioned prior art, obtains a kind of ultrasonic emulsification liquid concentration on-line measurement instrument, the concentration of on-line monitoring emulsion, temperature continuously, and have higher antijamming capability.
The purpose of this utility model is achieved in that
The online densimeter of a kind of ultrasonic emulsification liquid, it comprises: ultrasonic probe 25, temperature measurement circuit, A/D converter 6, address control and data line 11, CPU9, ROM12, monostable 23, the radiating circuit 24 of resetting, amplifier 22, Zero crossing level testing circuit 21, door 20, high-speed timer 19, crystal oscillator 14 when surveying, finish monostable device 15, survey width of cloth door 16, survey width of cloth frequency divider 13, its key problem in technology is: it also comprises:
The ROM12 of relation when (1) storing temperature, concentration, the sound of emulsion,
(2) input end of amplifier 22 is by the filtering circuit of being made up of amplitude limiter circuit and tuning frequency selection circuit,
(3) data of high-speed counter 19 are read in CPU9 through parallel port 27.
Described amplitude limit, filtering circuit are: coupling capacitance C
1, C
3With the amplitude limit resistance R
4Connect, also be in series with the limiter diode D of reverse parallel connection in the circuit
1, D
2Amplitude limiter circuit that constitutes and inductance L, capacitor C
2The wave filter of forming.
RAM links to each other with eight way switch 18 with I/O extender 17.
This densimeter is connected with computing machine 28 through serial port 10.
The utility model is custom-designed for tandem cold rolling mill emulsion, and relation curve when storing temperature, concentration, the sound of emulsion among the ROM is during with the sound that records, temperature calculates the concentration of emulsion from the relation that stores.
Because impurity such as iron filings are arranged in the emulsion unavoidably, increased the decay of sound, the utility model has added tunable filter circuit between radiating circuit and amplifier.
Introduce an embodiment of the present utility model below in conjunction with accompanying drawing.
Accompanying drawing is the circuit theory diagrams of the online densimeter embodiment of the utility model ultrasonic emulsification liquid.
Referring to accompanying drawing, circuit of the present utility model comprises: temperature measurement circuit 1-2, keyboard 3, keyboard and character code display controller 7 (8279), digital indicator 8, D/A (0832) 5, registering instrument 4, A/D (0809) 6, the address, control and data line 11, ROM12 (2764/27128), CPU9, RAM and I/O extender 17 (8155), serial port 10 (R232), parallel port 27, reset monostable 23, radiating circuit 24, amplifier 22, Zero crossing level testing circuit 21, door 20 during survey, 25MHz quartz (controlled) oscillator 14, finish monostable device 15, survey width of cloth door 16, survey width of cloth frequency divider 13.
Wherein, temperature measurement circuit is by high-precision power 1, resistance R
1～R
3Form with bridge for measuring temperature and temperature amplifier 2 (0P07) that platinum resistance Pt forms.CPU9 is by address, control and data line 11 and periphery ROM 12, RAM and I/O extender 17, D/A, A/D and keyboard and character code display controller 7 mutual Data transmission, order and break in service requirement, the relation when temperature of storage complete machine working procedure and variable concentrations emulsion, sound among the ROM12, when placing the piezoelectric transducer 25 of emulsion conveyance conduit and reflecting plate 26 to utilize the sound of measuring and temperature data, can calculate corresponding concentration value from the relation of preserving, D/A5 becomes simulating signal for registering instrument 4 continuous recordings the percentage data-switching of calculating.
When beginning during measurement sound, A/D6 begins to carry out converting temperature analog signal to digital quantity according to the instruction of CPU immediately, waiting for CPU reads, and the display requirement that keyboard and character code display 7 are keyed in the user is passed to the result that CPU stores and measure by user's requirement demonstration and shown on digital indicator 8.Radiating circuit 24 produces a positive pulse signal in the beginning thermometric, import tuning frequency selection circuit, through coupling capacitance C
1, C
3With the amplitude limit resistance R
4, limiter diode D
1, D
2The amplitude limiter circuit amplitude limit of forming is again through inductance L, capacitor C
2The filtering circuit of forming, the useless or undesired signal elimination that transducer 25 resonance frequencies are outer makes the Gain Adjustable of amplifier 22 get bigger and can not vibrate, the interference that extraneous machinery can electricity is difficult for influence measures, and strengthens the antijamming capability that instrument uses at the scene.Zero cross detection circuit 21 detects the Zero crossing level moment of that ripple arrival that will survey from emission and round trip echoes, produce the positive square wave of a zero passage moment that arrives from the emission moment to echo, markers is passed through when surveying on the door 20 when control is surveyed, monostable device 15 is finished along touching in the back, finish monostable 15 control meter width of cloth doors 16, allow receive in the echo above supplying the CPU counting behind tested width of cloth frequency divider 13 frequency divisions of signal number of high valve level.Adopt 25MHz quartz crystal oscillator 14 to do markers, high speed 8 bit data of high-speed timer 19 are directly read in CPU through parallel port 27 and are deposited, and low eight directly read in through the T0 mouth.
RAM and I/O extender 17 during for fine setting sound, can't reach the problem of sound transit-time measurement precision by eight tunnel beginnings, 18 controls with the difference of compensation experiment chamber curve and on-the-spot emulsion and the processing dimension of popping one's head in.If by the keyboard input, can lose after the power down, in case lose, display density has error; If each power down is re-entered also inconvenient.Adopt this eight bit switch simple and reliable, can forever preserve after once setting, remove from and must key in after the each power down of operating personnel both bothersomely again, can not guarantee again to find at once to re-enter after each power down, during re-enter, the concentration displayed value has the problem of error in power down.
The CPU of densimeter is connected with computing machine 28 through the RS232 serial port, in the time of can be with the temperature that records, sound amplitude mean value and during by temperature, sound, the concentration calculated of concentration relationship is transferred to computing machine, computing machine with numeral and chart displays temperature, concentration, the time, critical data such as amplitude, and can store, adjust back, print.Not only show measured data during readjustment but also calculate temperature, concentration mean value and standard error, be convenient to objective, scientifically estimate the quality of each class production.
The utility model can be realized the continuous on-line monitoring of cold-rolling emulsion, and its concentration, temperature control reach 0.01%, 0.01 ℃, and precision is better than 0.1%, 0.1 ℃, can reject misdata automatically, and stronger antijamming capability is arranged.
Claims (4)
1. online densimeter of ultrasonic emulsification liquid, it comprises: ultrasonic probe 25, temperature measurement circuit, A/D converter 6, address, control and data line 11, CPU9, ROM12, RAM and I/O extender 17, monostable 23, the radiating circuit 24 of resetting, amplifier 22, Zero crossing level testing circuit 21, door 20, high-speed timer 19, crystal oscillator 14 when surveying, finish monostable device 15, survey width of cloth door 16, survey width of cloth frequency divider 13, it is characterized in that: further comprising:
The ROM12 of relation when (1) storing temperature, concentration, the sound of emulsion,
(2) input end of amplifier 22 is by the filtering circuit of being made up of amplitude limiter circuit and tuning frequency selection circuit,
(3) data of high-speed counter 19 are read in CPU9 through parallel port 27.
2. the online densimeter of ultrasonic emulsification liquid according to claim 1 is characterized in that: described amplitude limit, filtering circuit are: coupling capacitance C
1, C
3With the amplitude limit resistance R
4Connect, also be in series with the limiter diode D of reverse parallel connection in the circuit
1, D
2Amplitude limiter circuit that constitutes and inductance L, capacitor C
2The wave filter of forming.
3. the online densimeter of ultrasonic emulsification liquid according to claim 1 is characterized in that: described RAM links to each other with eight way switch 18 with I/O extender 17.
4. the online densimeter of ultrasonic emulsification liquid according to claim 1 is characterized in that: densimeter is connected with computing machine 28 through serial port 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97202740 CN2291664Y (en) | 1997-03-28 | 1997-03-28 | Ultrasonic emulsion on-line concentration meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97202740 CN2291664Y (en) | 1997-03-28 | 1997-03-28 | Ultrasonic emulsion on-line concentration meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2291664Y true CN2291664Y (en) | 1998-09-16 |
Family
ID=33923813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97202740 Expired - Fee Related CN2291664Y (en) | 1997-03-28 | 1997-03-28 | Ultrasonic emulsion on-line concentration meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2291664Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102253119A (en) * | 2011-07-19 | 2011-11-23 | 中煤科工集团重庆研究院 | Emulsion concentration online detection system and ultrasonic receiving circuit thereof |
-
1997
- 1997-03-28 CN CN 97202740 patent/CN2291664Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102253119A (en) * | 2011-07-19 | 2011-11-23 | 中煤科工集团重庆研究院 | Emulsion concentration online detection system and ultrasonic receiving circuit thereof |
| CN102253119B (en) * | 2011-07-19 | 2013-03-06 | 中煤科工集团重庆研究院 | Emulsion concentration online detection system and ultrasonic receiving circuit thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |