CN104215581A - Device and method for detecting ultrasonic cavitation intensity - Google Patents
Device and method for detecting ultrasonic cavitation intensity Download PDFInfo
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- CN104215581A CN104215581A CN201410370217.1A CN201410370217A CN104215581A CN 104215581 A CN104215581 A CN 104215581A CN 201410370217 A CN201410370217 A CN 201410370217A CN 104215581 A CN104215581 A CN 104215581A
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Abstract
The invention relates to a device and a method for detecting ultrasonic cavitation intensity. The device includes a light source generator which is used for generating an optical signal; and an optical splitter which is used for splitting the optical signal into two same optical signals, wherein one of the two optical signals is transmitted to an optical fiber in a detection section and the other of the two optical signals is transmitted to an optical fiber in a reference section. The optical fiber in the reference section is arranged in a non-cavitated zone and the optical fiber in the detection section is arranged in a cavitated zone. Because of shocks onto the optical fiber in the detection section due to a shock wave and a microjet generated from collapses of a hollow bubble, the optical signal in the optical fiber in the detection section is changed. The device also includes a detection module which is used for detecting and comparatively detecting the optical signal of the detection section and the optical signal of the reference section to obtain ultrasonic cavitation intensity information in the cavitated zone. By means of the device and the method, transient information of the cavitation intensity can be obtained on the basis of a quite less influence on a cavitation field. The device and the method have application values in the fields of quantitative evaluation of performance of an ultrasonic cleaning device and a phonochemical device, measurement of distribution of the cavitation field, monitoring of change of the cavitation field, and the like.
Description
Technical field
The present invention relates to ultrasonic cavitation field, particularly relate to a kind of device and method detecting ultrasonic cavitation intensity.
Background technology
Ultrasonic cleaning and phonochemistry are all mainly make use of hyperacoustic cavitation effect, apply very extensive in the industry such as machinery, medicine, electronics, chemical industry.Cavitation refers to the generation of the liquid hollow bubble when the pressure of liquid drops to enough low and follow-up dynamic behavior thereof, its main forms is the micro-bubble occurring a large amount of continuous harmomegathus in liquid, these bubbles produce instantaneously according to hyperacoustic cycle and crumble and fall instantaneously, form the cloud and mist of bubble.Can shock wave be produced time these bubbles are crumbled and fall, can move towards wall when pressing close to wall and form the microjet beaten to wall.These characteristics due to cavitation make the measurement of cavitation field very difficult.Conventional method has aluminium foil cavitation corrosion method, hydrophone, iodine release etc., and these methods all exist obvious shortcoming.Aluminium foil cavitation corrosion method utilizes the cavitation corrosion effect of aluminium foil to evaluate the power of cavitation field, but this method very out of true, cannot quantitative measurment, repeatable very poor, and the existence of aluminium foil can affect cavitation field, makes measurement depart from truth; Hydrophone utilizes measurement acoustic pressure indirectly to reflect cavitation intensity, this method is not the information directly reflecting cavitation field, pressure field and cavitation field non-equivalence under many circumstances, and nautical receiving set probe diameter is larger, can have an impact to cavitation field, cavitation can make nautical receiving set surface that cavitation corrosion occurs, and nautical receiving set is damaged and lost efficacy; Iodine release utilizes the chemical effect of cavitation indirectly to reflect cavitation intensity, and this chemical method and indicator relation used are very large, and with cavitation intensity and nonlinear correlation, this method cannot reflect the distribution character of cavitation field in addition.Still do not have at present a kind of method or index of good evaluation cavitation effect, each ultrasonic cleaning device producer often acts on one's own, and which is better and which is worse cannot compare for cavitation intensity, causes the very mixed opinion in market.
Summary of the invention
The object of the invention is the deficiency existed for existing ultrasonic cavitation intensity detection technology, provide a kind of device and method detecting ultrasonic cavitation intensity.
For achieving the above object, on the one hand, the invention provides a kind of device detecting ultrasonic cavitation intensity, this device comprises:
Light source generator, for generation of light signal;
Optical splitter, is connected with light source generator, and the light signal for being produced by light source generator is divided into identical two ways of optical signals, and wherein a road light signal sends detection segment optical fiber to, and another road light signal sends reference field optical fiber to;
Reference field optical fiber, is placed in non-cavitating district;
Detection segment optical fiber, is placed in cavitation district, and the shock wave produced due to bubble collapse and microjet, to the impact of detection segment optical fiber, make the light signal in detection segment optical fiber change;
Detection module, respectively with reference field optical fiber and detection segment Fiber connection, for the ultrasonic cavitation strength information by detecting and compare detection segment light signal and reference field light signal acquisition cavitation district.
On the other hand, the invention provides the another kind of device detecting ultrasonic cavitation intensity, this device comprises:
Light source generator, for generation of light signal;
First optoisolator, for being one-way transmitted to cavitation district detection segment optical fiber by light signal;
Detection module, obtains raster center transmission peak wavelength information or raster center reflection wavelength information, by raster center transmission peak wavelength information or raster center reflection wavelength information acquisition cavitation district's ultrasonic cavitation strength information according to light signal.
Another aspect, the invention provides a kind of method detecting ultrasonic cavitation intensity, the method comprises the following steps:
Produce light signal;
Light signal is divided into identical two ways of optical signals, and wherein a road light signal sends detection segment optical fiber to, and another road light signal sends reference field optical fiber to; Described reference field optical fiber is placed in non-cavitating district, and described detection segment optical fiber is placed in cavitation district;
By detecting and compare the ultrasonic cavitation strength information in detection segment light signal and reference field light signal acquisition cavitation district.
The device and method of detection ultrasonic cavitation intensity provided by the invention achieves the transient state information obtaining cavitation intensity when very little on cavitation field impact, and has using value in quantitative evaluation ultrasonic cleaning device harmony chemical device performance, the distribution of measurement cavitation field, the change of monitoring cavitation field etc.
Accompanying drawing explanation
The application scenarios schematic diagram of the device cavitation field of the detection ultrasonic cavitation intensity that Fig. 1 (a) provides for the embodiment of the present invention;
The device of the detection ultrasonic cavitation intensity that Fig. 1 (b) provides for the embodiment of the present invention is at the application scenarios schematic diagram of water conservancy industry;
A kind of apparatus structure schematic diagram detecting ultrasonic cavitation intensity that Fig. 2 provides for the embodiment of the present invention;
The apparatus structure schematic diagram of the another kind detection ultrasonic cavitation intensity that Fig. 3 provides for the embodiment of the present invention;
The apparatus structure schematic diagram of another the detection ultrasonic cavitation intensity that Fig. 4 provides for the embodiment of the present invention;
A kind of apparatus structure schematic diagram detecting ultrasonic cavitation intensity that Fig. 5 provides for the embodiment of the present invention;
The apparatus structure schematic diagram of the another kind detection ultrasonic cavitation intensity that Fig. 5 (a) provides for the embodiment of the present invention;
The apparatus structure schematic diagram of another the detection ultrasonic cavitation intensity that Fig. 5 (b) provides for the embodiment of the present invention;
A kind of method flow schematic diagram detecting ultrasonic cavitation intensity that Fig. 6 provides for the embodiment of the present invention;
Fig. 7 is the schematic diagram realizing the measurement of cavitation hot spot in the embodiment of the present invention;
Fig. 8 is the schematic diagram realizing the measurement of cavitation intensity line in the embodiment of the present invention;
Fig. 9 is the schematic diagram realizing cavitation intensity planar survey in the embodiment of the present invention;
Figure 10 is the schematic diagram realizing cavitation intensity bulk measurement in the embodiment of the present invention.
Embodiment
After being described in detail embodiments of the present invention by way of example below in conjunction with accompanying drawing, other features of the present invention, feature and advantage will be more obvious.
The device of the detection ultrasonic cavitation intensity that Fig. 1 (a) provides for the embodiment of the present invention is at the application scenarios schematic diagram of cavitation field.As shown in Fig. 1 (a), the light signal that light source generator produces is divided into identical two ways of optical signals, and wherein a road light signal sends detection segment optical fiber to, and another road light signal sends reference field optical fiber to.Reference field optical fiber is placed in non-cavitating district, and detection segment optical fiber is placed in cavitation district, and the ultrasound wave that the cavity in cavitation district is produced by ultrasonic transducer vibrates and formed.The shock wave produced due to the bubble collapse in cavitation district and microjet, to the impact of detection segment optical fiber, make the light signal in detection segment optical fiber change.Last again by detecting and compare the ultrasonic cavitation strength information in detection segment light signal and reference field light signal acquisition cavitation district.
The device of the detection ultrasonic cavitation intensity that Fig. 1 (b) provides for the embodiment of the present invention is at the application scenarios schematic diagram of water conservancy industry.The speed that dam and flood discharging tunnel flow due to fluid is very high, forms low-pressure area in some region, is easy to cavitation occurs, thus causes the cavitation erosion of dam and flood discharging tunnel.The generation of cavitation corrosion, directly affects the life-span of hydraulic structure, even causes the accident of whole buildings.The embodiment of the present invention can be used for monitoring the cavitation erosion of hydraulic structure, the position of determination cavitation corrosion promptly and accurately and degree under the prerequisite not affecting operation.As shown in Fig. 1 (b), it is the schematic diagram of flood discharging tunnel in figure, be easy to cavitation erosion (pore represents cavitation district) occurs at the ogee section end of flood discharging tunnel and downstream, the top layer in this region and hydraulic structure inside (being laid in interior of building in advance when building flood discharging tunnel) by different depth layering laying optical fiber net, the signal of each root optical fiber of detection that can be real-time or regular.If cavitation erosion occurs for a certain region, hydraulic structure produces cavitation corrosion hole, makes bare optical be exposed at cavitation corrosion district, and fiber-optic signal is abnormal, then just can judge it is which longitude and latitude region there occurs cavitation corrosion by detection fiber signal, and cavitation corrosion is cheated and developed how dark etc. information.Thus Timeliness coverage hidden danger, power generating ratio artificially checks.Fig. 1 (b) is side sectional view, and the dot-and-dash line below ogee section represents optical fiber layer, and every one deck optical fiber layer is net distribution (see Fig. 1 (b) lower left corner).
A kind of apparatus structure schematic diagram detecting ultrasonic cavitation intensity that Fig. 2 provides for the embodiment of the present invention.As shown in Figure 2, this device comprises light source generator 100, optical splitter 200, detection module 300, detection segment optical fiber and reference field optical fiber, and wherein light source generator 100 is for generation of light signal; Optical splitter 200 is divided into identical two ways of optical signals for the light signal produced by light source generator 100, wherein a road light signal sends detection segment optical fiber to, another road light signal sends reference field optical fiber to, and above-mentioned reference field optical fiber is placed in non-cavitating district, and detection segment optical fiber is placed in cavitation district; The shock wave that in cavitation district, bubble collapse produces and microjet, to the impact of detection segment optical fiber, make the light signal in detection segment optical fiber change.Detection module 300 respectively with reference field optical fiber and detection segment Fiber connection, by detecting and comparing the ultrasonic cavitation strength information that detection segment light signal and reference field light signal obtain cavitation district.
It should be noted that, detecting effect and test effect to strengthen, micropore can be stamped or carve with groove on reference field optical fiber and detection segment optical fiber, making cavity be easy to reside in micropore or groove; Sheath is set on reference field optical fiber and detection segment optical fiber simultaneously, to avoid optical fiber to affect from cavitation, controls test section scope.
The embodiment of the present invention is not only applicable to the detection of ultrasonic cavitation, is also applicable to the detection of Hydrodynamic cavitation or other cavitations.The device and method of the detection ultrasonic cavitation intensity that the embodiment of the present invention provides achieves the transient state information obtaining cavitation intensity when very little on cavitation field impact online, and has using value in quantitative evaluation ultrasonic cleaning device harmony chemical device performance, the distribution of measurement cavitation field, the change of monitoring cavitation field etc.
The apparatus structure schematic diagram of the another kind detection ultrasonic cavitation intensity that Fig. 3 provides for the embodiment of the present invention.As shown in Figure 3, the difference of the device of the detection ultrasonic cavitation intensity shown in itself and Fig. 2 is: detection module 300 comprises the first photoelectric commutator 310, second photoelectric commutator 311 and analytic unit 312, first photoelectric commutator 310 and detection segment Fiber connection, second photoelectric commutator 311 and reference field Fiber connection, analytic unit 312 is connected with the first photoelectric commutator 310 and the second photoelectric commutator 311 respectively.
The course of work of the device of the detection ultrasonic cavitation intensity shown in Fig. 3 is as follows:
Light source generator 100 produces light signal, the light signal that light source generator 100 produces is divided into identical two ways of optical signals by optical splitter 200, wherein a road light signal sends detection segment optical fiber to, another road light signal sends reference field optical fiber to, reference field optical fiber is placed in non-cavitating district, and detection segment optical fiber is placed in cavitation district.The light signal of reception is converted into electric signal by the first photoelectric commutator 310 and the second photoelectric commutator 311 respectively.The shock wave produced when detection segment optical fiber annex is crumbled and fall due to a large amount of cavity and microjet can be beaten at optical fiber surface, optical fiber is made to produce instantaneous small bending, fiber microbending loss can cause optical power change, and the electrical signal amplitude after therefore analyzing the conversion of detection segment light signal by analytic unit 312 and the electrical signal amplitude after the conversion of reference field light signal determine the ultrasonic cavitation strength information in cavitation district.
It should be noted that, analytic unit 312 can be occurred by electrical signal amplitude and the cavitation after detection segment light signal conversion before comparing cavitation and occurring equally detection segment light signal afterwards change after electrical signal amplitude determine the ultrasonic cavitation strength information in cavitation district.
The apparatus structure schematic diagram of another the detection ultrasonic cavitation intensity that Fig. 4 provides for the embodiment of the present invention.As shown in Figure 4, the difference of the device of the detection ultrasonic cavitation intensity shown in itself and Fig. 2 is: detection module 300 comprises coupling mechanism 320, photoelectric commutator 321 and analytic unit 322, wherein coupling mechanism 320 input end respectively with reference field optical fiber and detection segment Fiber connection, its output terminal is connected with the import and export end of photoelectric commutator 321, and the output terminal of photoelectric commutator 321 is connected with analytic unit 322.
The course of work of the device of the detection ultrasonic cavitation intensity shown in Fig. 4 is as follows:
Light source generator 100 produces light signal, and the light signal that light source generator 100 produces is divided into identical two ways of optical signals by optical splitter 200, and wherein a road light signal sends detection segment optical fiber to, and another road light signal sends reference field optical fiber to.Detection segment light signal and reference field light signal are synthesized a road light signal by coupling mechanism 320, light signal behind synthesis one tunnel is converted into electric signal by photoelectric commutator 321, the shock wave produced when detection segment optical fiber annex is crumbled and fall due to a large amount of cavity and microjet can be beaten at optical fiber surface, photoelastic effect can be produced at inside of optical fibre, the phase place of light signal is changed, and the phase place of the electric signal after therefore being transformed by analytic unit 322 analysis determines the ultrasonic cavitation strength information in cavitation district.
A kind of apparatus structure schematic diagram detecting ultrasonic cavitation intensity that Fig. 5 provides for the embodiment of the present invention.As shown in Figure 5, this device comprises light source generator 100, optoisolator 400, detection module 500, wherein, light source generator 100 is for generation of light signal, light signal is one-way transmitted to the detection segment optical fiber at place, cavitation district by optoisolator 400, and detection module 500 gathers and analyzes before cavitation and after cavitation, light signal obtains cavitation district ultrasonic cavitation strength information.
The apparatus structure schematic diagram of the another kind detection ultrasonic cavitation intensity that Fig. 5 (a) provides for the embodiment of the present invention.As shown in Fig. 5 (a), the difference of the device of the detection ultrasonic cavitation intensity shown in itself and Fig. 5 is: detection module 500 comprises coupling mechanism 510, grating 520, second optoisolator 530, photoelectric commutator 540 and analytic unit 550, wherein, the input end of coupling mechanism 510 and the detection segment Fiber connection in cavitation district, its output terminal is connected with the input end of grating 520; The input end of the second optoisolator 530 is connected with the output terminal of grating 520, and its output terminal is connected with the input end of photoelectric commutator 540; The input end of analytic unit 550 is connected with the output terminal of photoelectric commutator 540.
The course of work of the device of the detection ultrasonic cavitation intensity shown in Fig. 5 (a) is as follows:
Light source generator 100 produces light signal, the light signal that light source generator 100 produces is one-way transmitted to the detection segment optical fiber at place, cavitation district by optoisolator 400, light signal transfers to grating 520 through coupling mechanism 510, the raster center transmission peak wavelength information of light signal is obtained by grating 520, the raster center transmission peak wavelength information of light signal is one-way transmitted to photoelectric commutator 540 by the second optoisolator 530, the shock wave produced when detection segment optical fiber annex is crumbled and fall due to a large amount of cavity and microjet can be beaten at optical fiber surface, fiber core is effectively reflected change, and then raster center transmission peak wavelength is changed, therefore analyze before cavitation by analytic unit 550 and raster center transmission peak wavelength information acquisition cavitation district's ultrasonic cavitation strength information of light signal after cavitation.
The apparatus structure schematic diagram of another the detection ultrasonic cavitation intensity that Fig. 5 (b) provides for the embodiment of the present invention.As shown in Fig. 5 (b), the difference of the device of the detection ultrasonic cavitation intensity shown in itself and Fig. 5 is: detection module 500 comprises coupling mechanism 510, grating 520, second optoisolator 530, photoelectric commutator 540 and analytic unit 550, wherein the input end of coupling mechanism 510 is connected with detection segment optical fiber, grating 520 output terminal respectively, and its output terminal is connected with the input end of grating 520, the input end of the second optoisolator 530 respectively; The output terminal of the second optoisolator 530 is connected with the input end of photoelectric commutator 540; The input end of analytic unit 550 is connected with the output terminal of photoelectric commutator 540.
The course of work of the device of the detection ultrasonic cavitation intensity shown in Fig. 5 (b) is as follows:
Light source generator 100 produces light signal, the light signal that light source generator 100 produces is one-way transmitted to the detection segment optical fiber at place, cavitation district by optoisolator 400, light signal transfers to grating 520 through coupling mechanism 510, the second optoisolator 530 is transferred to through coupling mechanism 510 again after grating 520 reflected light, raster center reflection wavelength information is one-way transmitted to photoelectric commutator 540 by the second optoisolator 530, after photoelectric commutator 540 converts electric signal to, by analytic unit 550 by the raster center reflection wavelength information acquisition cavitation strength information before analysis cavitation and after cavitation.
The device of the detection ultrasonic cavitation intensity that the embodiment of the present invention provides achieves the transient state information obtaining cavitation intensity when very little on cavitation field impact, and has using value in quantitative evaluation ultrasonic cleaning device harmony chemical device performance, the distribution of measurement cavitation field, the change of monitoring cavitation field etc.
A kind of method flow schematic diagram detecting ultrasonic cavitation intensity that Fig. 6 provides for the embodiment of the present invention.As shown in Figure 6, the method comprising the steps of 601-603:
Step 601, produces light signal.
Particularly, produce light signal by the light source of the device detecting ultrasonic cavitation intensity, light source can be laser, polarized light, glow discharge spot lamp or light emitting diode etc.
Step 602, is divided into identical two ways of optical signals by light signal, and wherein a road light signal sends detection segment optical fiber to, and another road light signal sends reference field optical fiber to; Reference field optical fiber is placed in non-cavitating district, and detection segment optical fiber is placed in cavitation district.
Particularly, the light signal that light source produces is divided into two identical light signals by the device detecting ultrasonic cavitation intensity, wherein a road light signal sends detection segment optical fiber to, another road light signal sends reference field optical fiber to, detection segment optical fiber and reference field optical fiber arrange in sheath, micropore and groove respectively one or more.Reference field optical fiber is placed in non-cavitating district; Detection segment optical fiber is placed in cavitation district, and its arrangement can be arranged as the case may be, and detection segment fibre diameter is according to circumstances from several microns to hundreds of micron, very carefully, very little on sound field impact.
Step 603, by detecting and compare the cavitation strength information in detection segment light signal and reference field light signal acquisition cavitation district.
Particularly, the device of ultrasonic cavitation intensity is detected by detecting and compare the cavitation strength information in detection segment light signal and reference field light signal acquisition cavitation district.
In one embodiment, detection segment light signal and described reference field light signal are separately converted to electric signal by the device detecting ultrasonic cavitation intensity; The cavitation strength information in cavitation district is determined by the electrical signal amplitude after the conversion of analysis detection segment light signal and the electrical signal amplitude after the conversion of reference field light signal.The principle of the present embodiment is that the shock wave that a large amount of cavitys in cavitation district produce when crumbling and fall near test optical fiber section and microjet can be beaten at optical fiber surface, optical fiber is made to produce instantaneous small bending, fiber microbending loss can cause optical power change, is obtained the information of cavitation intensity by the amplitude analyzing the light signal gathered.
In another embodiment, detection segment light signal and described reference field light signal are synthesized a road light signal by the device detecting ultrasonic cavitation intensity; Light signal behind synthesis one tunnel is converted into electric signal; The cavitation strength information in cavitation district is determined by the phase place analyzing the electric signal after transforming.The principle of the present embodiment is that the shock wave that a large amount of cavitys in cavitation district produce when crumbling and fall near test optical fiber section and microjet can be beaten at optical fiber surface, photoelastic effect can be produced at inside of optical fibre, the phase place of light signal is changed, is obtained the information of cavitation intensity by the phase place analyzing the light signal gathered.
In yet another embodiment, detection segment light signal and reference field light signal are synthesized a road light signal by the device detecting ultrasonic cavitation intensity; Raster center transmission peak wavelength information is obtained according to the light signal behind synthesis one tunnel; The cavitation strength information in cavitation district is determined by analyzing raster center transmission peak wavelength information.The principle of the present embodiment is that the shock wave that a large amount of cavitys in cavitation district produce when crumbling and fall near detection segment optical fiber and microjet can be beaten at detection segment optical fiber surface, detection segment fiber core effective refractive index is changed, and then raster center transmission peak wavelength is changed, the information of cavitation intensity is obtained by the raster center transmission peak wavelength analyzing the light signal gathered.
The point that the method for the detection ultrasonic cavitation intensity that the embodiment of the present invention provides can realize cavitation intensity by optical fiber measures (schematic diagram as shown in Figure 7), the line of cavitation intensity measures (shown in schematic diagram institute Fig. 8), the planar survey (schematic diagram as shown in Figure 9) of cavitation intensity and the bulk measurement (schematic diagram as shown in Figure 10) of cavitation intensity.When logical optical fiber carry out line measurement, planar survey and bulk measurement time, the result of acquisition will be the evaluation of cavitation Strength Space average on line, on face, on body.
The method of the detection ultrasonic cavitation intensity that the embodiment of the present invention provides achieves the transient state information obtaining cavitation intensity when very little on cavitation field impact online, and has using value in quantitative evaluation ultrasonic cleaning device harmony chemical device performance, the distribution of measurement cavitation field, the change of monitoring cavitation field etc.
Obviously, under the prerequisite not departing from true spirit of the present invention and scope, the present invention described here can have many changes.Therefore, all changes that it will be apparent to those skilled in the art that, all should be included within scope that these claims contain.The present invention's scope required for protection is only limited by described claims.
Claims (12)
1. detect a device for ultrasonic cavitation intensity, it is characterized in that, comprising:
Light source generator, for generation of light signal;
Optical splitter, for described light signal is divided into identical two ways of optical signals, wherein a road light signal sends detection segment optical fiber to, and another road light signal sends reference field optical fiber to;
Reference field optical fiber, is placed in non-cavitating district;
Detection segment optical fiber, is placed in cavitation district, and the shock wave produced due to bubble collapse and microjet, to the impact of described detection segment optical fiber, make the light signal in described detection segment optical fiber change;
Detection module, respectively with described reference field optical fiber and described detection segment Fiber connection, for the ultrasonic cavitation strength information by detecting and compare detection segment light signal and reference field light signal acquisition cavitation district.
2. the device of detection ultrasonic cavitation intensity according to claim 1, it is characterized in that, described detection module comprises the first photoelectric commutator, the second photoelectric commutator and analytic unit, described first photoelectric commutator and described detection segment Fiber connection, for converting described detection segment light signal to electric signal; Described second photoelectric commutator and described reference field Fiber connection, for converting described reference field light signal to electric signal; Described analytic unit is connected with described first photoelectric commutator and described second photoelectric commutator, for determining the ultrasonic cavitation strength information in cavitation district by the electrical signal amplitude after analyzing the conversion of described detection segment light signal and the electrical signal amplitude after the conversion of described reference field light signal.
3. the device of detection ultrasonic cavitation intensity according to claim 1, it is characterized in that, described detection module comprises coupling mechanism, photoelectric commutator and analytic unit, described coupling mechanism one end respectively with described reference field optical fiber and described detection segment Fiber connection, for described detection segment light signal and described reference field light signal are synthesized a road light signal; Described photoelectric commutator one end is connected with the described coupling mechanism other end, converts electric signal in order to the light signal exported by described coupling mechanism; The described photoelectric commutator other end is connected with described analytic unit, and the described analytic unit phase place be used for by analyzing the electric signal after transforming determines the ultrasonic cavitation strength information in cavitation district.
4. the device of the detection ultrasonic cavitation intensity according to claim arbitrary in claims 1 to 3, is characterized in that, described detection segment optical fiber and described reference field optical fiber be respectively arranged with in sheath, micropore and groove one or more.
5. detect a device for ultrasonic cavitation intensity, it is characterized in that, comprising:
Light source generator, for generation of light signal;
First optoisolator, for being one-way transmitted to the detection segment optical fiber in cavitation district by described light signal;
Detection module, obtains raster center transmission peak wavelength information or raster center reflection wavelength information, by described raster center transmission peak wavelength information or raster center reflection wavelength information acquisition cavitation district's ultrasonic cavitation strength information according to described light signal.
6. device according to claim 5, is characterized in that, described detection module comprises coupling mechanism, grating, the second optoisolator, photoelectric commutator and analytic unit; The input end of described coupling mechanism and described detection segment Fiber connection, its output terminal is connected with the input end of described grating; The input end of described second optoisolator is connected with the output terminal of described grating, and its output terminal is connected with the input end of described photoelectric commutator; The input end of described analytic unit is connected with the output terminal of described photoelectric commutator, and described analytic unit is by analyzing raster center transmission peak wavelength information acquisition cavitation district's ultrasonic cavitation strength information of described light signal.
7. device according to claim 5, is characterized in that, described detection module comprises coupling mechanism, grating, the second optoisolator, photoelectric commutator and analytic unit; The input end of described coupling mechanism is connected with described detection segment optical fiber and described grating output terminal respectively, and its output terminal is connected with the input end of described grating and the input end of described second optoisolator respectively; The output terminal of described second optoisolator is connected with the input end of described photoelectric commutator; The input end of described analytic unit is connected with the output terminal of described photoelectric commutator, and described analytic unit is by analyzing raster center reflection wavelength information acquisition cavitation district's ultrasonic cavitation strength information of described light signal.
8. the device of the detection ultrasonic cavitation intensity according to the arbitrary claim in claim 5 to 7, is characterized in that, described detection segment optical fiber be provided with in sheath, micropore and groove one or more.
9. detect a method for ultrasonic cavitation intensity, it is characterized in that, the method comprises:
Produce light signal;
Described light signal is divided into identical two ways of optical signals, and wherein a road light signal sends detection segment optical fiber to, and another road light signal sends reference field optical fiber to; Described reference field optical fiber is placed in non-cavitating district, and described detection segment optical fiber is placed in cavitation district;
By detecting and compare the ultrasonic cavitation strength information in detection segment light signal and reference field light signal acquisition cavitation district.
10. the method for detection ultrasonic cavitation intensity according to claim 9, is characterized in that, the described cavitation strength information step obtaining cavitation district by detecting and compare detection segment light signal and reference field light signal comprises:
Described detection segment light signal and described reference field light signal are separately converted to electric signal;
The ultrasonic cavitation strength information in cavitation district is determined by the electrical signal amplitude after analyzing the conversion of described detection segment light signal and the electrical signal amplitude after the conversion of described reference field light signal.
The method of 11. detection ultrasonic cavitation intensity according to claim 9, is characterized in that, the described cavitation strength information step obtaining cavitation district by detecting and compare detection segment light signal and reference field light signal comprises:
Described detection segment light signal and described reference field light signal are synthesized a road light signal;
Light signal behind described synthesis one tunnel is converted into electric signal;
The ultrasonic cavitation strength information in ultrasonic cavitation district is determined by the phase place of the electric signal after analyzing described conversion.
The method of 12. detection ultrasonic cavitation intensity according to claim 9, is characterized in that, the described cavitation strength information step obtaining cavitation district by detecting and compare detection segment light signal and reference field light signal comprises:
Described detection segment light signal and described reference field light signal are synthesized a road light signal;
Synthesize the light signal behind a road according to described detection segment light signal and described reference field light signal and obtain raster center transmission peak wavelength information;
The ultrasonic cavitation strength information in cavitation district is determined by analyzing described raster center transmission peak wavelength information.
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| CN109883605A (en) * | 2019-02-28 | 2019-06-14 | 江苏大学 | The measurement method and detection device of shock wave pressure in a kind of liquid medium |
| WO2021258645A1 (en) * | 2020-06-22 | 2021-12-30 | 飞依诺科技(苏州)有限公司 | Adjustment method and apparatus for therapeutic ultrasonic wave, and computer device and storage medium |
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| CN113465656A (en) * | 2021-04-30 | 2021-10-01 | 潍坊嘉腾液压技术有限公司 | Tester for detecting fluid composite parameters and data processing method |
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| CN113663622B (en) * | 2021-08-23 | 2022-12-23 | 飞依诺科技股份有限公司 | Ultrasonic cavitation parameter adjusting method and ultrasonic cavitation device |
| CN113916978A (en) * | 2021-08-26 | 2022-01-11 | 华能澜沧江水电股份有限公司 | Real-time monitoring method and system for cavitation of hydraulic tunnel during operation period based on audio |
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