CN209014131U - Acoustic velocity tester with variable angle of receiving transducer - Google Patents
Acoustic velocity tester with variable angle of receiving transducer Download PDFInfo
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- CN209014131U CN209014131U CN201821533842.3U CN201821533842U CN209014131U CN 209014131 U CN209014131 U CN 209014131U CN 201821533842 U CN201821533842 U CN 201821533842U CN 209014131 U CN209014131 U CN 209014131U
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- energy converter
- screw rod
- right support
- sound velocity
- transducer
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- 238000000034 method Methods 0.000 abstract description 15
- 238000005259 measurement Methods 0.000 abstract description 13
- 238000000691 measurement method Methods 0.000 abstract 1
- 230000008859 change Effects 0.000 description 19
- 230000000694 effects Effects 0.000 description 6
- 238000009774 resonance method Methods 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 230000002463 transducing effect Effects 0.000 description 3
- 241000167857 Bourreria Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
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- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
A sound velocity determinator with a variable receiving transducer angle relates to an experimental device for measuring optimal resonance frequency and ultrasonic sound velocity, and aims to solve the problem that the measurement result error of the existing measurement method for the optimal resonance frequency and the ultrasonic sound velocity is large. The device comprises a left support and a right support which are fixedly connected with a front fixing rod and a rear fixing rod, a graduated scale fixed between the left support and the right support, a slide rail and a screw rod which are arranged below the graduated scale in parallel, a slide block sleeved on the slide rail and the screw rod thread, a fixing block fixed on the slide rail and sleeved on the non-thread section of the screw rod, a hand wheel positioned outside the right support and connected with the screw rod, a transmitting transducer and a receiving transducer which are arranged on the fixing block and the slide block, and an angle adjusting knob. The utility model is used for measure the best resonant frequency of piezoelectric transducer and reduce phase method ultrasonic sound velocity measuring error.
Description
Technical field
The utility model relates to physics facility, specifically a kind of Sound velocity measuring apparatus for receiving energy converter variable-angle.
Background technique
The property, state and velocity variations that measured matter can be obtained by acoustic velocity measutement, are widely used in ranging, liquid
Flow velocity, positioning, elasticity modulus etc..Sound Velocity Measurements are also a very classical comprehensive experiment in Physical Experiment.
In Sound Velocity Measurements teaching, the optimum resonant frequency of PZT (piezoelectric transducer) is generally first determined, PZT (piezoelectric transducer) is not being changed
Under the conditions of driving frequency, resonance method or phase-comparison method is recycled to determine wavelength.In order to obtain very strong acoustic signals, send out
The end face keeping parallelism of side pressure electric transducer and receiving end PZT (piezoelectric transducer) is penetrated, two PZT (piezoelectric transducer)s when in addition resonance method surveys wavelength
End face is also beneficial to guarantee apparent standing wave resonance phenomenon in parallel, therefore the Sound velocity measuring apparatus in existing Physical Experiment emits side pressure
The end face keeping parallelism and angle of electric transducer and receiving end PZT (piezoelectric transducer) are kept fixed.But due to transmitting terminal and receiving end
The fixed setting that is parallel to each other can lead to two obvious problems during the experiment: (1) two PZT (piezoelectric transducer)s are arranged in parallel
So that the interference optimum resonant frequency point measurement of standing wave resonance effect, the so-called optimum resonant frequency essence that existing laboratory apparatus obtains
Be resonance effects and energy converter resonance frequency synthesis result (high correspondence course journal, volume 25, the 4th phase, 2012, the page number:
It 75-77), is not the true optimum resonant frequency point of energy converter；(2) wave length of sound process is being obtained using phase-comparison method
In, it since two PZT (piezoelectric transducer)s are parallel to each other, have very strong back wave and reaches receiving end, to interfere the measurement of phase, increase
The big measurement error of Sound velocity measuring apparatus.Consequently, to facilitate the measurement and reduction phase of PZT (piezoelectric transducer) optimum resonant frequency
Method acoustic velocity measutement error, there is an urgent need to a kind of Sound velocity measuring apparatus for receiving energy converter variable-angle.
Utility model content
The purpose of the utility model is to provide a kind of Sound velocity measuring apparatus for receiving energy converter variable-angle, to solve existing object
Sound velocity measuring apparatus is existing in terms of the measurement of PZT (piezoelectric transducer) optimum resonant frequency and phase method acoustic velocity measutement in reason experiment asks
Topic.
In order to achieve the above object, the technology employed by the present utility model is
A kind of Sound velocity measuring apparatus receiving energy converter variable-angle, includes left support, right support, graduated scale, preceding fixation
Bar, screw rod, sliding rail, fixed block, sliding block, handwheel, transmitting transducer, receives energy converter, angular adjustment knob at rear fixed link.Before
Fixed link is fixedly connected with left support and right support with rear fixed link, and graduated scale is fixed between left support and right support；In order to protect
Card slide block movement translates on a horizontal line always, and sliding rail and screw rod are arranged in parallel in below graduated scale and sliding rail is located under screw rod
Side；Slide block set is on the sliding rail and screw flight, and fixed block is fixed on the slide rail and to be sleeved on non-threaded section of screw rod, and handwheel is located at
It is connect on the outside of right support and with screw rod, transmitting transducer and reception energy converter are separately mounted on fixed block and sliding block, and are received
The angle of energy converter can be adjusted by angular adjustment knob.Adjusting handle can change sliding block and receive the position of energy converter, angle
Adjusting knob can change the angle for receiving energy converter, to control influence of the back wave to energy converter measurement is received.
A kind of application method of the Sound velocity measuring apparatus of the reception energy converter variable-angle, comprising the following steps:
S1, according to different test purposes, adjusting angular adjustment knob makes transmitting transducer and receives the end face of energy converter
At N degree angle, N=0 or be not 0；
S2, driving signal frequency or graduated scale reading are obtained.
Preferably, when PZT (piezoelectric transducer) optimum resonant frequency is tested, adjusting angular adjustment knob makes N not be 0, that is, emits
Energy converter and the end face for receiving energy converter are not parallel, and when the position for receiving energy converter mobile by handwheel, receive energy converter
Electrical signal amplitude will not with transmitting transducer and receive energy converter distance change and cyclically-varying；Transmitting is then adjusted to change
The driving signal frequency of energy device, the oscillograph of energy converter connection is received by observation, when electrical signal amplitude is maximum in oscillograph
When, driving signal frequency at this time is the optimum resonant frequency of PZT (piezoelectric transducer).
Preferably, when phase-comparison method measure wavelength when, adjust angular adjustment knob make N not be 0, i.e., transmitting transducer and
The end face for receiving energy converter is not parallel, and when the position for receiving energy converter mobile by handwheel, receives the electric signal of energy converter
Amplitude will not change and cyclically-varying with transmitting transducer and reception energy converter distance；It will then receive what energy converter obtained
The driving signal of electric signal and signal generator inputs oscillograph simultaneously, tests the lissajous figures of its composition, by adjusting hand
Wheel, it is continuous to change the position for receiving energy converter, according to being read on lissajous figures variation record graduated scale on oscillograph, to obtain
Obtain wavelength value.
Preferably, when resonance method measures wavelength, adjusting angular adjustment knob makes N=0, i.e. transmitting transducer and reception changes
Can device end face it is parallel, and when through the position of the mobile reception energy converter of handwheel, the electrical signal amplitude for receiving energy converter can be with
Transmitting transducer and receive energy converter distance change and have obvious cyclically-varying；The telecommunications of energy converter acquisition will then be received
Number input oscillograph, it is continuous to change the position for receiving energy converter by adjusting handle, according to wave-shape amplitude variation note on oscillograph
It is read on record graduated scale, to obtain wavelength value.
The Sound velocity measuring apparatus of the utility model building is adjusted to receive and be changed when measuring PZT (piezoelectric transducer) optimum resonant frequency
Energy device angular adjustment knob keeps transmitting transducer and reception energy converter end face not parallel, and the sound wave for eliminating emitted end reflection is dry
It disturbs, avoids the negative effect of resonance effects, obtain the optimum resonant frequency point of PZT (piezoelectric transducer)；When phase-comparison method surveys wavelength,
Adjusting reception energy converter angular adjustment knob keeps transmitting transducer and reception energy converter end face not parallel, so that receiving energy converter only
The sound wave for receiving transmitting transducer transmitting, avoids interference of the back wave to phase measurement；When resonance method surveys wavelength, adjusting is connect
Receiving energy converter angular adjustment knob keeps transmitting transducer parallel with energy converter end face is received, existing to obtain significant standing wave resonance
As.When optimum resonant frequency test and phase-comparison method survey wavelength, if transmitting transducer and reception energy converter distance are shorter,
Receiving energy converter end face should be adjusted to deviate two energy converter parallel position greater angle, it is ensured that reduce interference of reflected wave.
The utility model has the advantage of reception energy converter angles to change, best so as to improve PZT (piezoelectric transducer)
Resonant frequency point and phase method survey the measurement accuracy of wavelength.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Appended drawing reference:
1, left support, 2, sliding rail, 3, screw rod, 4, graduated scale, 5, fixed block, 6, transmitting transducer, 7, reception energy converter, 8,
Angular adjustment knob, 9, sliding block, 10, right support, 11, handwheel, 12, preceding fixed link, 13, rear fixed link.
Specific embodiment
To be best understood from the utility model, the utility model is further described below with reference to examples and drawings, with
Lower embodiment is only to be illustrated to the utility model rather than be limited to it.
As shown in Figure 1, a kind of Sound velocity measuring apparatus for receiving energy converter variable-angle, includes left support 1, sliding rail 2, screw rod
3, graduated scale 4, fixed block 5, transmitting transducer 6, reception energy converter 7, angular adjustment knob 8, sliding block 9, right support 10, handwheel
11, preceding fixed link 12, rear fixed link 13.Preceding fixed link 12 and rear fixed link 13 play the work of fixed left support 1 and right support 10
With graduated scale 4 is fixed between left support 1 and right support 10, and sliding rail 2 and screw rod 3 are arranged in parallel in 4 lower section of graduated scale and sliding rail
2 are located at 3 lower section of screw rod to guarantee that slide block movement translates on a horizontal line always, and sliding block 9 is sleeved on 3 spiral shell of sliding rail 2 and screw rod
On line, fixed block 5 is fixed on sliding rail 2 and is sleeved on 3 non-threaded sections of screw rod.Handwheel 11 is located at 10 outside of right support and and screw rod
3 connections, transmitting transducer 6 and reception energy converter 7 are separately mounted on fixed block 5 and sliding block 9, and receive the angle of energy converter 7
It can be adjusted by angular adjustment knob 8.Adjusting handle 11 can change sliding block 9 and receive the position of energy converter 7, but 5 He of fixed block
The position of transmitting transducer 6 thereon is constant, and angular adjustment knob 8 can change the angle for receiving energy converter 7, so that control is anti-
Influence of the ejected wave to energy converter measurement is received.When measuring PZT (piezoelectric transducer) optimum resonant frequency, adjusts and receive energy converter angle
Adjusting knob 8 keeps transmitting transducer 6 and reception 7 end face of energy converter not parallel, eliminates the sound wave interference of emitted end reflection, avoids
The negative effect of resonance effects obtains the optimum resonant frequency point of PZT (piezoelectric transducer)；When phase-comparison method surveys wavelength, adjusts and receive
Energy converter angular adjustment knob 8 keeps transmitting transducer 6 and reception 7 end face of energy converter not parallel, only receives so that receiving energy converter 7
The sound wave emitted to transmitting transducer, avoids interference of the back wave to phase measurement；When resonance method surveys wavelength, adjusts to receive and change
Energy device angular adjustment knob 8 keeps transmitting transducer 6 parallel with 7 end face of energy converter is received, to obtain significant standing wave resonance phenomenon.
When optimum resonant frequency test and phase-comparison method survey wavelength, if transmitting transducer and reception energy converter distance are shorter, connect
Receiving energy converter end face should be adjusted to deviate two energy converter parallel position greater angle, it is ensured that reduce interference of reflected wave.
Embodiment 1
When PZT (piezoelectric transducer) optimum resonant frequency is tested, first adjusting reception energy converter angular adjustment knob 8 makes to emit transducing
Device 6 and reception 7 end face of energy converter are not parallel, are moved forward and backward by adjusting handle 11 and receive 7 position of energy converter, if receiving transducing
7 electrical signal amplitude of device with transmitting transducer 6 and does not receive the cyclically-varying apart from change of energy converter 7, illustrates to receive and change
Energy device angular adjustment is reasonable, 7 position of fixed reception energy converter, adjusts the driving signal frequency of transmitting transducer 6, passes through sight
It examines and receives the oscillograph that energy converter 7 connects, when electrical signal amplitude maximum in oscillograph, driving signal frequency at this time is to press
The optimum resonant frequency of electric transducer.
Embodiment 2
When phase-comparison method measures wavelength, first adjusting reception energy converter angular adjustment knob 8 makes transmitting transducer 6 and receives
7 end face of energy converter is not parallel, is moved forward and backward by adjusting handle 11 and receives 7 position of energy converter, if receiving 7 electric signal of energy converter
Amplitude with transmitting transducer 6 and does not receive the cyclically-varying apart from change of energy converter 7, illustrates to receive energy converter angle tune
It is reasonable to save, and the driving signal for receiving electric signal and signal generator that energy converter 7 obtains is inputted oscillograph simultaneously, tests it
The lissajous figures of composition, it is continuous to change the position for receiving energy converter 7 by adjusting handle 11, according to Li Saru on oscillograph
It is read on graphic change record graduated scale, to obtain wavelength value.
Embodiment 3
When resonance method measures wavelength, first adjusting reception energy converter angular adjustment knob 8 makes transmitting transducer 6 and receives transducing
7 end face of device is parallel, by adjusting handle 11 be moved forward and backward receive 7 position of energy converter, if receive 7 electrical signal amplitude of energy converter with
Transmitting transducer 6 and receive energy converter 7 have obvious cyclically-varying apart from change, illustrated receive energy converter angular adjustment
Rationally, the electric signal that energy converter 7 obtains will be received and inputs oscillograph, by adjusting handle 11, continuous change receives energy converter 7
Position, according to being read on wave-shape amplitude variation record graduated scale on oscillograph, to obtain wavelength value.
Embodiment described above is only that preferred embodiments of the present invention are described, not practical to this
Novel range is defined, and under the premise of not departing from the spirit of the design of the utility model, those of ordinary skill in the art are to this
The various changes and improvements that the technical solution of utility model is made should all fall into the guarantor that claims of the utility model determine
It protects in range.
Claims (1)
1. it is a kind of receive energy converter variable-angle Sound velocity measuring apparatus, it is characterised in that: include left support (1), sliding rail (2),
Screw rod (3), fixed block (5), transmitting transducer (6), receives energy converter (7), angular adjustment knob (8), sliding block at graduated scale (4)
(9), right support (10), handwheel (11), preceding fixed link (12), rear fixed link (13)；Preceding fixed link (12) and rear fixed link (13)
It is fixedly connected with left support (1) and right support (10), graduated scale (4) is fixed between left support (1) and right support (10), sliding rail
(2) and screw rod (3) is arranged in parallel in below graduated scale (4) and sliding rail (2) is located at below screw rod (3), and sliding block (9) is sleeved on sliding rail
(2) and on screw rod (3) screw thread, fixed block (5) is fixed on sliding rail (2) and is sleeved on non-threaded section of screw rod (3), handwheel (11) position
It is connect on the outside of right support (10) and with screw rod (3), transmitting transducer (6) and reception energy converter (7) are separately mounted to fixed block
(5) and on sliding block (9), and the angle for receiving energy converter (7) can be adjusted by angular adjustment knob (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821533842.3U CN209014131U (en) | 2018-09-19 | 2018-09-19 | Acoustic velocity tester with variable angle of receiving transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821533842.3U CN209014131U (en) | 2018-09-19 | 2018-09-19 | Acoustic velocity tester with variable angle of receiving transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209014131U true CN209014131U (en) | 2019-06-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821533842.3U Expired - Fee Related CN209014131U (en) | 2018-09-19 | 2018-09-19 | Acoustic velocity tester with variable angle of receiving transducer |
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| Country | Link |
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| CN (1) | CN209014131U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109115326A (en) * | 2018-09-19 | 2019-01-01 | 安徽大学 | Acoustic velocity tester with variable angle of receiving transducer and using method thereof |
| CN112946531A (en) * | 2021-02-03 | 2021-06-11 | 中国电建集团贵州电力设计研究院有限公司 | Transformer fault diagnosis device and diagnosis method |
-
2018
- 2018-09-19 CN CN201821533842.3U patent/CN209014131U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109115326A (en) * | 2018-09-19 | 2019-01-01 | 安徽大学 | Acoustic velocity tester with variable angle of receiving transducer and using method thereof |
| CN109115326B (en) * | 2018-09-19 | 2024-04-09 | 安徽大学 | Sound velocity measuring instrument with variable angle of receiving transducer and use method thereof |
| CN112946531A (en) * | 2021-02-03 | 2021-06-11 | 中国电建集团贵州电力设计研究院有限公司 | Transformer fault diagnosis device and diagnosis method |
| CN112946531B (en) * | 2021-02-03 | 2024-04-30 | 中国电建集团贵州电力设计研究院有限公司 | Transformer fault diagnosis device and diagnosis method |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190621 |