CN209393660U - A kind of ultrasound wave descaling device with self-diagnostic function - Google Patents
A kind of ultrasound wave descaling device with self-diagnostic function Download PDFInfo
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- CN209393660U CN209393660U CN201920083743.8U CN201920083743U CN209393660U CN 209393660 U CN209393660 U CN 209393660U CN 201920083743 U CN201920083743 U CN 201920083743U CN 209393660 U CN209393660 U CN 209393660U
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Abstract
A kind of ultrasound wave descaling device with self-diagnostic function, ultra-magnetic telescopic rod assembly composition are as follows: magnet exciting coil is wound on giant magnetostrictive rod, two permanent magnetism pieces are adsorbed on respectively on the upper and lower end face of giant magnetostrictive rod, waveguide rod is fixed in the above on the upper surface of a permanent magnetism piece, and capacitor bottom crown is sleeved in waveguide rod from the top down and is fixed on the upper surface of a permanent magnetism piece above；Upper end cover and lower cover are respectively fixed at the top and bottom of shell, capacitor top crown is fixed on the bottom surface of upper end cover, which is placed among columnar shell, and waveguide rod can be stretched out from the hole of upper shell lid；Also there is ultrasonic power and capacitance measurement circuit, self-diagnostic circuit, failure indicating circuit.The present apparatus has the characteristics that magnetostrictive strain is big, fast response time, electromechanical conversion efficiency are high, Curie temperature is high, can detect in real time to the stroke of giant magnetostrictive rod, and carry out real-time diagnosis to the working condition of ultrasound wave descaling device.
Description
Technical field
The utility model relates to automatic diagnostic field more particularly to a kind of ultrasound wave descaling device with self-diagnostic function.
Background technique
In recent years, in order to realize quick, effective cleaning to mechanical equipment, boiler etc., ultrasound wave descaling technology is obtained
Rapidly development.Ultrasound wave descaling device is mainly made of ultrasonic transducer and ultrasonic power, wherein ultrasonic transducer
Mainly there is two class of PZT (piezoelectric transducer) and giant magnetostrictive transducer.Giant magnetostrictive transducer magnetostriction as used in it
The features such as material output should become larger, electromechanical conversion efficiency is high, fast response time, is widely used in ultrasound wave descaling field.However,
On the one hand in order to allow ultrasound wave descaling device to reach better cleaning effect, the giant magnetostrictive rod in giant magnetostrictive transducer
Need to generate biggish vibration displacement, this may cause it and mechanical breaking occurs；Another aspect ultrasonic power is by the working time
Problem may also be will appear with environment and manufacture craft influence；Above situation can all influence the scale removal effect of ultrasound wave descaling device
Fruit, it is therefore necessary to the damaged conditions to ultrasound wave descaling device to diagnose.
Utility model content
The purpose of the utility model is to provide a kind of high ultrasound wave descaling devices with self-diagnostic function of integrated level.
Purpose of the utility model is realized as follows: a kind of ultrasound wave descaling device with self-diagnostic function, including
Self-diagnostic circuit, ultra-magnetic telescopic rod assembly composition are as follows: magnet exciting coil is wound on giant magnetostrictive rod, two permanent magnetism piece difference
It is fixed on the upper and lower end face of giant magnetostrictive rod, waveguide rod is fixed in the above on the upper surface of a permanent magnetism piece, capacitor bottom crown
It is sleeved in waveguide rod and is fixed on the upper surface of a permanent magnetism piece above from the top down；The top and bottom of shell point
It is not fixed with upper end cover and lower cover, capacitor top crown is fixed on the bottom surface of upper end cover, which is placed in
Among columnar shell, and waveguide rod can be stretched out from the hole of upper shell lid；The above-mentioned upper and lower pole plate of capacitor is galvanized iron
Plate；
Also there is the ultrasonic power for being used as and powering to magnet exciting coil, by rectification circuit, frequency conversion inverter circuit and impedance
It is constituted with circuit, the 220V power-frequency voltage of input is made into DC voltage by rectification circuit, by high-frequency inverter circuit that direct current is inverse
Become high frequency square wave, improve the power factor of power supply by impedance matching circuit and filters square wave at sine wave, that is, high frequency sinusoidal
Signal；
Capacitance measurement circuit composition are as follows: be the sinusoidal signal U of 100KHz by frequencyiIt is connected and fixed capacitor C0It is followed by model
Negative input end for the positive input terminal of the operational amplifier of LM318, operational amplifier is grounded, and the output of operational amplifier is connected to
The both ends of the self-diagnostic circuit, the capacitor C being made of above-mentioned capacitor top crown and capacitor bottom crown are connected to operation amplifier respectively
The positive input terminal and output end of device.
The size of the upper and lower distance between polar plate variation of capacitor C is equal with the stroke of giant magnetostrictive rod, and capacitor C has
Following relationship C=ε S/4 π kd, in formula, ε is the dielectric constant of capacitor C, and S is the positive area of the upper and lower pole plate of capacitor, and d is electricity
Hold the vertical range between upper and lower pole plate, k is electrostatic force constant.
In the capacitance measurement circuit, operational amplifier input impedance is very high, and gain is very big, output voltage UoAre as follows:In formula, C capacitor, C0Series capacitance, UiInput voltage, according to this formula, the output voltage and electricity of operational amplifier
Hold the proportional relationship of vertical range d between pole plate.
Also there is failure indicating circuit；The self-diagnostic circuit are as follows: the voltage signal for receiving capacitance measurement circuit output, when
The voltage signal magnitude received change it is abnormal or variation frequency it is abnormal, self-diagnostic circuit judges ultra-magnetic telescopic
The abnormal or flexible frequency of the flexible amplitude of stick is abnormal, and then judges ultrasound wave descaling device job failure, self diagnosis
Circuit output fault-signal is to failure indicating circuit, when fault-signal is that the flexible amplitude of giant magnetostrictive rod is abnormal, failure
Red indicating light in indicating circuit is bright, when fault-signal is that giant magnetostrictive rod stretching frequency is abnormal, indicating fault electricity
Green indicator light in road is bright.
The utility model includes ultrasonic power, capacitance measurement circuit, self-diagnostic circuit, failure indicating circuit, super mangneto
Striction transducer.Giant magnetostrictive transducer includes shell, permanent magnetism piece, giant magnetostrictive rod, waveguide rod, upper end cover, excitation wire
Circle, two capacitor plates.Ultrasonic power provides high-frequency current to giant magnetostrictive transducer, drives giant magnetostrictive transducer
Work, converts electrical energy into mechanical energy.Two capacitor plates are connected inside giant magnetostrictive transducer with capacitance measurement circuit
It connects, measures the stroke and stretching frequency of giant magnetostrictive rod.Capacitance measurement circuit by the stroke of giant magnetostrictive rod with stretch
Contracting frequency conversion is that voltage signal output is connected to self-diagnostic circuit, self-diagnostic circuit can by this time voltage and normal work
When voltage be compared, and then differentiate giant magnetostrictive transducer working condition it is whether good.
It is wound with magnet exciting coil outside giant magnetostrictive rod in giant magnetostrictive transducer, when ultrasonic power is to excitation wire
When enclosing indirect current, alternating magnetic field can be axially generated, so that giant magnetostrictive rod is generated periodically elongation and is shortened, with flexible
The elongation and shortening of stick will drive waveguide rod and generate ultrasonic vibration, act on load.
Capacitance measurement circuit is sentenced by the variation of capacitor between two capacitor plates inside measurement giant magnetostrictive transducer
Whether disconnected giant magnetostrictive transducer works normally.When leading to high-frequency alternating current to ultrasonic transducer, magnet exciting coil can also be produced
The alternating magnetic field of raw identical frequency, the collapsing length of giant magnetostrictive transducer can change with change of magnetic field strength, relatively
The two capacitor plates distance answered can also change.By formula C=ε S/4 π kd it is found that capacitor permittivity ε and pole plate face
In the case that area S is certain, the size and distance d of capacitor C is in inverse ratio, and when giant magnetostrictive transducer stretches, top crown is solid
It is scheduled on upper end cover, the direction that bottom crown can stretch with energy converter is mobile, therefore the capacitor between two pole plates can change therewith.
Capacitance measurement circuit collects the variation of capacitor, and capacitance is become voltage after processing, is input to self-diagnostic circuit.
Self-diagnostic circuit receives the voltage signal of capacitance measurement circuit output, when the voltage signal magnitude received changes not
Self-diagnostic circuit judges that the flexible amplitude of giant magnetostrictive rod is abnormal or flexible when normally perhaps the frequency of variation is abnormal
Frequency it is abnormal, and then judge ultrasound wave descaling device job failure, self-diagnostic circuit exports fault-signal and refers to failure
Show circuit, which includes amplitude malfunction indicator lamp and frequency fault indicator light, when fault-signal is that super mangneto is stretched
When the flexible amplitude of contracting stick is abnormal, amplitude malfunction indicator lamp sends out a warning, and otherwise gives a green light, when fault-signal is giant magnetostrictive rod
When stretching frequency is abnormal, amplitude malfunction indicator lamp sends out a warning, and otherwise gives a green light.
The utility model has the beneficial effects that
The utility model measures the stroke and vibration frequency of giant magnetostrictive rod using built-in capacitance sensor, thus
Real-time diagnosis is carried out to the working condition of ultrasound wave descaling device, and the fault-signal being diagnosed to be is transferred to indicating fault electricity
Road keeps the corresponding indicator light of the circuit glittering.
Detailed description of the invention
Fig. 1 is the theory structure schematic diagram of the utility model giant magnetostrictive transducer.
Fig. 2 is the stereoscopic schematic diagram of capacitor plate in the giant magnetostrictive transducer of the utility model.
Fig. 3 is the system structure diagram of the utility model.
Fig. 4 is the utility model capacitance measurement circuit figure.
In Fig. 1,1- lower cover, 2- permanent magnetism piece, 3- shell, 4- magnet exciting coil, 5- giant magnetostrictive rod, pole under 6- capacitor
Plate, 7- upper end cover, 8- capacitor top crown, 9- waveguide rod, 10- ultrasonic power, 11- capacitance measurement circuit, the power-off of 12- autodiagnosis
Road, 13- failure indicating circuit.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
As shown in Figure 1, a kind of ultrasound wave descaling device with self-diagnostic function, including giant magnetostrictive transducer its by
Lower cover 1, permanent magnetism piece 2, shell 3, magnet exciting coil 4, giant magnetostrictive rod 5, capacitor bottom crown 6, upper end cover 7, capacitor top crown
8, waveguide rod 9 is constituted；Ultrasonic power 10, capacitance measurement circuit 11, self-diagnostic circuit 12, failure indicating circuit 13.
Fig. 1 is shown, ultra-magnetic telescopic rod assembly composition are as follows: magnet exciting coil 4 is wound on giant magnetostrictive rod 5, and two forever
Magnetic sheet 2 is separately fixed on the upper and lower end face of giant magnetostrictive rod 5, and waveguide rod 9 is fixed in the above the upper surface of a permanent magnetism piece,
Capacitor bottom crown 6 is sleeved in waveguide rod 9 from the top down and is fixed on the upper surface of a permanent magnetism piece above；The top of shell 3
Portion and bottom are respectively fixed with upper end cover 7 and lower cover 1, and capacitor top crown 8 is fixed on the bottom surface of upper end cover 7, the super mangneto
Flexible rod assembly is actively placed among columnar shell 3, and waveguide rod 9 can be stretched out from the hole of 3 upper end cover 7 of shell；On
Stating the upper and lower pole plate 8,6 of capacitor is galvanized iron sheet；
Also there is the ultrasonic power 10 for being used as and powering to magnet exciting coil 4, by rectification circuit, frequency conversion inverter circuit and impedance
Match circuit is constituted, and the 220V power-frequency voltage of input is made into DC voltage, by high-frequency inverter circuit by DC inversion at height
Frequency square wave improves the power factor of power supply by impedance matching circuit and filters square wave at sine wave, that is, high frequency sinusoidal signal；
Referring to fig. 2, the upper and lower pole plate of capacitor is plectane, and there is hole in centre, passes through for waveguide rod activity.
Capacitance measurement circuit 11 forms are as follows: is the sinusoidal signal U of 100KHz by frequencyiIt is connected and fixed capacitor C0It is followed by fortune
The positive input terminal of amplifier, the negative input end ground connection of operational amplifier are calculated, the output of operational amplifier is connected to the self diagnosis
The both ends of circuit 12, the capacitor C being made of above-mentioned capacitor top crown 8 and capacitor bottom crown 6 are being connected to operational amplifier just respectively
Input terminal and output end.
Ultrasonic power provides high-frequency current to giant magnetostrictive transducer, and driving giant magnetostrictive transducer work will
Electric energy is converted to mechanical energy.Two capacitor plates input inside giant magnetostrictive transducer with the signal of capacitance measurement circuit
End is connected, and measures the stroke and stretching frequency of giant magnetostrictive rod.Capacitance measurement circuit stretches giant magnetostrictive rod
Amount is converted to voltage signal output with stretching frequency and is connected to self-diagnostic circuit, and self-diagnostic circuit is by voltage at this time and normally
Voltage when work is compared, and then differentiates whether giant magnetostrictive transducer working condition is good.
Ultrasonic power is made of rectification circuit, inverter circuit and impedance matching circuit, by the 220V power-frequency voltage of input
It is made into DC voltage, by high-frequency inverter circuit by DC inversion at high frequency square wave.Power supply is improved by impedance matching circuit
Power factor and by square wave filter at sine wave, the magnet exciting coil being passed through in giant magnetostrictive transducer, drive ultra-magnetic telescopic
Energy converter (i.e. magnetostrictive rod) stretches work.
It is wound with magnet exciting coil outside giant magnetostrictive rod in giant magnetostrictive transducer, when ultrasonic power is to excitation wire
When enclosing indirect current, alternating magnetic field can be axially generated, so that giant magnetostrictive rod is generated periodically elongation and is shortened, with flexible
The elongation and shortening of stick will drive waveguide rod and generate ultrasonic vibration, directly act on load.
As shown in Figure 1, the upper end cover that capacitor top crown is fixed on giant magnetostrictive transducer is motionless, when to ultra-magnetic telescopic
When energy converter leads to high-frequency alternating current, magnet exciting coil can also generate the alternating magnetic field of identical frequency, and giant magnetostrictive rod can be with magnetic
The variation of field is stretched, so that the capacitor bottom crown for driving permanent magnetism piece and waveguide rod and being fixed on permanent magnetism piece moves together.
Therefore the distance between bottom crown can change therewith on capacitor, size that the two poles of the earth distance between plates changes and magnetostrictive rod
Stroke is equal, known to formula C=ε S/4 π kd in the case where the dielectric constant of capacitor and certain pole plate positive area, electricity
The size and distance d of appearance are in inverse ratio, therefore need to can only be immediately arrived at by the variation of the capacitance of two capacitor plates flexible
Amount.
Two-plate (using thin galvanized iron sheet make) between capacitance and capacitance variations value it is all very small, need by
Measuring circuit detects small capacitance variable quantity, and capacitance measurement circuit is converted to capacitance change with it into monotropic function relationship
Voltage.Capacitance measurement circuit schematic diagram is as shown in figure 4, high frequency sinusoidal signal UiBy fixed capacity C0It is input to operational amplifier
Positive input terminal, the capacitor C between two capacitor plates connects between the positive input terminal and output end of operational amplifier, and operation is put
The negative input end ground connection of big device.Operational amplifier input impedance is very high, and gain is very big, output voltage Uo are as follows:It is proportional according to the distance between the output voltage of the visible operational amplifier of this formula and capacitor plate d.
As shown in Fig. 2, self-diagnostic circuit receives the voltage signal of capacitance measurement circuit output, when the voltage signal received
Amplitude change abnormal or variation frequency it is abnormal when, self-diagnostic circuit judges that giant magnetostrictive rod is stretching amplitude not just
Normal or flexible frequency is abnormal, and then judges ultrasound wave descaling device job failure, and self-diagnostic circuit exports failure letter
Number give failure indicating circuit, which includes amplitude malfunction indicator lamp and frequency fault indicator light, works as fault-signal
For giant magnetostrictive rod stretch amplitude it is abnormal when, amplitude malfunction indicator lamp sends out a warning, and otherwise gives a green light, when fault-signal is super
When magnetostrictive rod stretching frequency is abnormal, amplitude malfunction indicator lamp sends out a warning, and otherwise gives a green light.
Claims (5)
1. a kind of ultrasound wave descaling device with self-diagnostic function, including self-diagnostic circuit (12), which is characterized in that super mangneto
Flexible rod assembly composition are as follows: magnet exciting coil (4) is wound on giant magnetostrictive rod (5), and two permanent magnetism pieces (2) are separately fixed at super
On the upper and lower end face of magnetostrictive rod (5), waveguide rod (9) is fixed in the above on the upper surface of a permanent magnetism piece, capacitor bottom crown
(6) it is sleeved on waveguide rod (9) and is fixed on the upper surface of a permanent magnetism piece above from the top down；The top of shell (3)
It is respectively fixed with upper end cover (7) and lower cover (1) with bottom, capacitor top crown (8) is fixed on the bottom surface of upper end cover (7), should
Ultra-magnetic telescopic rod assembly is actively placed among columnar shell (3), and waveguide rod (9) can be from shell (3) upper end cover (7)
Hole in stretch out；The above-mentioned upper and lower pole plate of capacitor (8,6) is galvanized iron sheet；
Also there is the ultrasonic power (10) for being used as and powering to magnet exciting coil (4), by rectification circuit, frequency conversion inverter circuit and impedance
Match circuit is constituted, and the 220V power-frequency voltage of input is made into DC voltage, by high-frequency inverter circuit by DC inversion at height
Frequency square wave improves the power factor of power supply by impedance matching circuit and filters square wave at sine wave, that is, high frequency sinusoidal signal；
Capacitance measurement circuit (11) composition are as follows: be the sinusoidal signal U of 100KHz by frequencyiIt is connected and fixed capacitor C0It is followed by operation
The positive input terminal of amplifier, the negative input end ground connection of operational amplifier, the output of operational amplifier are connected to the autodiagnosis power-off
The both ends on road (12), the capacitor C being made of above-mentioned capacitor top crown (8) and capacitor bottom crown (6) are connected to operational amplifier respectively
Positive input terminal and output end.
2. a kind of ultrasound wave descaling device with self-diagnostic function according to claim 1, which is characterized in that the electricity
The size for holding the variation of the upper and lower pole plate of C (8,6) spacing is equal with the stroke of giant magnetostrictive rod (5), and capacitor C has with ShiShimonoseki
It is formula C=ε S/4 π kd, in formula, ε is the dielectric constant of capacitor C, and S is the positive area of the upper and lower pole plate of capacitor, d is on capacitor,
Vertical range between bottom crown, k are electrostatic force constants.
3. a kind of ultrasound wave descaling device with self-diagnostic function according to claim 2, which is characterized in that the electricity
In capacitance measuring circuits, operational amplifier input impedance is very high, and gain is very big, output voltage UoAre as follows:According to this
Formula, the proportional relationship of vertical range d between the output voltage and capacitor plate of operational amplifier.
4. a kind of ultrasound wave descaling device with self-diagnostic function according to claim 1, which is characterized in that it is described from
Diagnostic circuit are as follows: receive capacitance measurement circuit output voltage signal, when receive voltage signal magnitude variation it is abnormal or
When the frequency and inconsistent ultrasonic power frequency of person's variation, self-diagnostic circuit judges the flexible amplitude of giant magnetostrictive rod not just
Normal or flexible frequency is abnormal, and then judges ultrasound wave descaling device job failure, and self-diagnostic circuit exports failure letter
Number give failure indicating circuit.
5. a kind of ultrasound wave descaling device with self-diagnostic function according to claim 4, which is characterized in that the event
Hinder indicating circuit are as follows: including amplitude malfunction indicator lamp and frequency fault indicator light, when fault-signal is flexible for giant magnetostrictive rod
When amplitude is abnormal, amplitude malfunction indicator lamp sends out a warning, and otherwise gives a green light, when fault-signal is giant magnetostrictive rod stretching frequency
When abnormal, amplitude malfunction indicator lamp sends out a warning, and otherwise gives a green light.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920083743.8U CN209393660U (en) | 2019-01-18 | 2019-01-18 | A kind of ultrasound wave descaling device with self-diagnostic function |
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| CN201920083743.8U CN209393660U (en) | 2019-01-18 | 2019-01-18 | A kind of ultrasound wave descaling device with self-diagnostic function |
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| CN201920083743.8U Expired - Fee Related CN209393660U (en) | 2019-01-18 | 2019-01-18 | A kind of ultrasound wave descaling device with self-diagnostic function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109570137A (en) * | 2019-01-18 | 2019-04-05 | 西南交通大学 | A kind of ultrasound wave descaling device with self-diagnostic function |
| CN111504442A (en) * | 2020-04-27 | 2020-08-07 | 天津恒立远大仪表股份有限公司 | Tuning fork switch probe structure |
-
2019
- 2019-01-18 CN CN201920083743.8U patent/CN209393660U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109570137A (en) * | 2019-01-18 | 2019-04-05 | 西南交通大学 | A kind of ultrasound wave descaling device with self-diagnostic function |
| CN109570137B (en) * | 2019-01-18 | 2024-03-29 | 西南交通大学 | Ultrasonic descaling device with self-diagnosis function |
| CN111504442A (en) * | 2020-04-27 | 2020-08-07 | 天津恒立远大仪表股份有限公司 | Tuning fork switch probe structure |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190917 Termination date: 20210118 |
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| CF01 | Termination of patent right due to non-payment of annual fee |