CN116727129A - Cavitation-preventing jet nozzle for ultrasonic detection - Google Patents
Cavitation-preventing jet nozzle for ultrasonic detection Download PDFInfo
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- CN116727129A CN116727129A CN202210844628.4A CN202210844628A CN116727129A CN 116727129 A CN116727129 A CN 116727129A CN 202210844628 A CN202210844628 A CN 202210844628A CN 116727129 A CN116727129 A CN 116727129A
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- water
- nozzle
- cavitation
- ultrasonic
- ultrasonic probe
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- 238000001514 detection method Methods 0.000 title claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 116
- 230000008878 coupling Effects 0.000 claims abstract description 79
- 238000010168 coupling process Methods 0.000 claims abstract description 79
- 238000005859 coupling reaction Methods 0.000 claims abstract description 79
- 239000000523 sample Substances 0.000 claims abstract description 70
- 239000007921 spray Substances 0.000 claims abstract description 20
- 230000007704 transition Effects 0.000 claims abstract description 20
- 230000008054 signal transmission Effects 0.000 claims abstract description 7
- 238000012360 testing method Methods 0.000 claims abstract description 6
- 238000011010 flushing procedure Methods 0.000 claims description 11
- 238000005520 cutting process Methods 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 238000009659 non-destructive testing Methods 0.000 abstract description 4
- 230000002776 aggregation Effects 0.000 abstract 1
- 238000004220 aggregation Methods 0.000 abstract 1
- 238000005507 spraying Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
- B05B7/26—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/28—Details, e.g. general constructional or apparatus details providing acoustic coupling, e.g. water
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/0289—Internal structure, e.g. defects, grain size, texture
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The application relates to the technical field of ultrasonic nondestructive testing, in particular to an anti-cavitation jet nozzle for ultrasonic testing. The water inlet pipe is provided with three water inlets and a first water filling chamber, wherein the three water inlets are uniformly distributed on the base, and the water inlets are connected with the base at forty-five-degree angles; the base is connected with the spray head through threads, and an ultrasonic probe clamp with a contracted streamline external shape is arranged inside the base; an anti-cavitation flow baffle is arranged in the spray head, and can influence the flow of water in the spray nozzle, so that the coupled water is promoted to gather in front of the ultrasonic probe, and the cavitation phenomenon generated in front of the probe due to the fact that the phased array ultrasonic probe in the spray nozzle influences the flow of water is reduced; the transition section of the spray head is of a two-section design, so that the coupling water can be effectively rectified after flowing through the transition section. The design is beneficial to the aggregation of coupling water in front of the ultrasonic probe, and reduces the influence of cavitation bubbles on ultrasonic signal transmission.
Description
Technical Field
The application relates to the technical field of water spray coupling type ultrasonic nondestructive testing, in particular to an anti-cavitation jet nozzle for ultrasonic testing.
Background
Ultrasonic detection is a common nondestructive detection method for composite material components, can detect various defects in the components, and is widely applied to engineering manufacture and research and development. The common phased array ultrasonic coupling modes mainly comprise water immersion type, air coupling and water spraying type, and the nondestructive testing applicability of different coupling modes to different types of components is different. Because the water spraying coupling does not need to be soaked in water for a long time, the signal attenuation is relatively small, and the coupling mode is the most suitable for ultrasonic nondestructive testing of large composite material components.
Although the water-jet coupled ultrasonic detection technology has been developed rapidly in recent years, certain disadvantages exist in application. Particularly, when ultrasonic detection is performed on composite materials and the like, the acoustic coupling stability is relatively poor, so that the acoustic coupling stability of the water spray coupling phased array ultrasonic detection system needs to be researched and improved. The stability of the acoustic coupling of an ultrasonic test is directly related to the state of the coupled water column. In the water spray coupling type phased array ultrasonic detection, a probe is required to be installed in a coupling nozzle, the existence of the probe can influence the flow of water in the nozzle, the coupling water is difficult to gather on a signal emitting surface of the probe, so that bubbles are formed on the surface of the probe, cavitation is generated, and the transmission of ultrasonic signals is influenced. Therefore, the application requirement of water spraying coupling is to carry out structural design on the coupling nozzle, so that cavitation phenomenon is reduced, the quality of the coupling water column is improved, and the stability of acoustic coupling of ultrasonic detection is further improved.
The water column most suitable for transmitting ultrasonic signals in the nozzle coupling type phased array ultrasonic detection is stable and bubble-free, and the water column in the state can reduce interference factors of the ultrasonic signals and provide a good channel for signal transmission. The main reason for generating bubbles in the water spraying coupling of ultrasonic detection is cavitation, the probe fixture can be designed to enable the coupling water to be gathered towards the center more easily, the structure of the spray head is designed to enable the coupling water to flow through the front of the probe more easily by arranging a blocking structure of the coupling water in front of the probe, and the cavitation is reduced. The stability of the nozzle jet is related to the structure of the nozzle transition section, which can be designed so that the coupling water can be effectively rectified at the transition section.
In the prior art, the design of the phased array ultrasonic coupling nozzle usually rarely considers the generation of cavitation phenomena in front of the probe, so that bubbles generated in front of the probe influence the transmission of ultrasonic signals, and meanwhile, the design for reducing the cavitation phenomena in other directions is rarely adopted.
Disclosure of Invention
Aiming at the defects of the prior production technology, the application provides the cavitation-preventing jet nozzle for ultrasonic detection, which has reasonable structure, can reduce the generation of jet cavitation phenomenon under the detection scheme of adopting water spray coupling and internally arranging a phased array ultrasonic probe, has a certain setting effect on the flow of coupling water, and meets the requirement of ultrasonic detection.
The technical scheme adopted by the application is as follows:
the cavitation-preventing jet nozzle for ultrasonic detection comprises a nozzle water inlet pipe, wherein a water inlet and a first water filling chamber are respectively arranged at two ends of the nozzle water inlet pipe, and the nozzle water inlet pipe is provided with three uniformly distributed nozzles which are welded on a base; the base is connected with the spray head through threads, and an ultrasonic probe clamp is arranged in the base; an anti-cavitation flow baffle plate is arranged in the spray head, and can influence the flow of water in the spray nozzle, so that the water flow is promoted to gather in front of the ultrasonic probe, and the cavitation phenomenon generated in front of the probe due to the fact that the phased array ultrasonic probe in the spray nozzle influences the flow of coupling water is reduced; the transition section of the spray head is of a two-section design, so that the coupling water is effectively rectified after flowing through the transition section.
Furthermore, the nozzle water inlet pipe is connected with the base at a forty-five-degree angle, the connection ports of the nozzle water inlet pipe and the base are side cuts, the opening is large, and the coupling water is more easily uniformly distributed in the first flushing chamber and flows along the outlet direction of the nozzle.
Furthermore, the ultrasonic probe fixture can clamp and install the phased array ultrasonic probe, the external shape of the ultrasonic probe fixture is a shrinkage streamline, and the coupling water entering the inside of the nozzle is facilitated to gather along the streamline to the front of the probe.
Furthermore, the anti-cavitation flow baffle plate and the nozzle transition section are integrally designed, and the nozzle transition section is connected with the inner ring part of the anti-cavitation flow baffle plate, so that the coupling water can be rectified as soon as possible after the coupling water passes through the turbulent flow of the anti-cavitation flow baffle plate, and the influence of the coupling water turbulent flow on ultrasonic signal transmission is reduced.
Further, in order to enable the coupling water to be better converged in front of the ultrasonic probe, the axial distance between the signal emitting surface of the ultrasonic probe and the cavitation-preventing flow baffle plate is preferably 3-5mm, and at the moment, the coupling water can better change the flow direction to be converged in front of the ultrasonic probe.
Further, the inner diameter of the anti-cavitation flow baffle is larger than the range of ultrasonic signal emission, and is not too large to prevent the influence on the flow of water.
Furthermore, the transition section of the spray head is designed by adopting a two-section broken line obtained by approximating the Vidolichos curve by using a Tagella-Prak algorithm as a guide line for guiding lofting, thereby being convenient to process and having better rectifying effect.
The beneficial effects of the application are as follows:
the side surface of the base is provided with the three water inlets which are uniformly distributed and connected with the mounting pipe at forty-five-degree oblique angles, the plurality of water inlets which are uniformly distributed are beneficial to the average distribution of coupling water in the nozzle, the oblique cuts at forty-five-degree angles are formed in the mounting pipe, the water inlet area is increased, the coupling water is beneficial to the dispersion of the coupling water in the nozzle according to the flow velocity and the flow direction of the water, and too much base space is not occupied; the probe mounting groove in the base can fix the probe, and the outer shape of the mounting groove is a shrinkage streamline shape, so that the coupling water entering the nozzle can be gathered towards the front of the probe along the streamline; the anti-cavitation flow blocking structure is arranged on the nozzle part, and can influence the flow of water in the nozzle, so that the coupling water is promoted to gather in front of the ultrasonic probe, and the cavitation phenomenon generated in front of the probe due to the fact that the phased array ultrasonic probe in the nozzle influences the flow of water is reduced; the transition section of the spray head is formed by two-section type cone, compared with a spray nozzle designed by curve guiding, the spray head is simpler to process, and the coupling water can be effectively rectified after flowing through the transition section.
Drawings
Fig. 1 is a perspective view of a first view of the present application.
Fig. 2 is a perspective view of a second view of the present application.
Fig. 3 is a front view of the present application.
Fig. 4 is a cross-sectional view A-A of fig. 3.
Wherein: 1. a nozzle inlet pipe; 2. a base; 3. an anti-cavitation flow baffle; 4. a nozzle transition section; 5. an ultrasonic probe; 6. a fixed notch; 7. a wire outlet; 8. an ultrasonic probe fixture; 9. a gasket; 10. a water inlet; 11. a first flushing chamber; 12. a second flushing chamber; 13. and a water outlet.
Detailed Description
The following describes specific embodiments of the present application with reference to the drawings.
In the embodiment shown in fig. 1 and fig. 2, the device mainly comprises a nozzle water inlet pipe 1, wherein two ends of the nozzle water inlet pipe 1 are respectively provided with a water inlet 10 and a first water filling chamber 11, the nozzle water inlet pipe 1 is provided with three uniformly distributed and welded on a base 2, the nozzle water inlet pipe 1 is connected with the base 2 at a forty-five degree angle, a connecting port is cut laterally, an opening is large, and the water flow direction is good, so that coupling water is more easily uniformly distributed in the first water filling chamber 12 and flows along the outlet direction of the nozzle.
In the embodiment shown in fig. 2, a fixed notch 6 is arranged at the bottom of the nozzle and can be used for coupling the nozzle with a mechanical arm, and the wire outlet 7 is a cutting notch, so that the circuit of the ultrasonic probe 5 is conveniently connected with external equipment, and the movement detection of the ultrasonic probe 5 is conveniently realized.
In the embodiment shown in fig. 3 and 4, an ultrasonic probe fixture 8 is arranged in the nozzle, the ultrasonic probe fixture 8 can fix the ultrasonic probe 5, and the outside of the fixture is in a curve pipeline type, so that the coupling water in the first water filling chamber 11 can better flow along the outside of the fixture, and is converged in front of the ultrasonic probe 5.
In the embodiment shown in fig. 4, an anti-cavitation baffle 3 is disposed in the nozzle, when the coupling water flows out from the first flushing chamber 11, the coupling water flows to the front of the ultrasonic probe 5 through the turbulence of the anti-cavitation baffle 3, so as to prevent the phenomenon that the coupling water in front of the probe cannot be well converged and bubbles are generated due to the influence of the ultrasonic probe 5 and the ultrasonic probe clamp 8 on the coupling water.
In order to make the coupling water better gather in front of the ultrasonic probe, the axial distance between the signal emitting surface of the ultrasonic probe 5 and the cavitation-preventing flow baffle 3 is 3-5mm, and at the moment, the coupling water can better change the flow direction to gather in front of the ultrasonic probe.
The ultrasonic probe 5 emits signals at a certain angle, and in order to ensure the transmission of the signals, the inner diameter of the anti-cavitation flow baffle 3 is larger than the range of the signal emission.
In the embodiment shown in fig. 1 and fig. 4, the anti-cavitation flow baffle 3 and the nozzle transition section 4 are integrally designed, and the nozzle transition section 4 is connected with the inner ring part of the anti-cavitation flow baffle 3, so that the coupling water can be rectified as soon as possible after passing through the turbulence of the anti-cavitation flow baffle 3, and the influence of the turbulence of the coupling water on ultrasonic signal transmission is reduced.
In the embodiment shown in fig. 4, the nozzle transition section 4 of the nozzle is designed by using a two-section fold line obtained by approximating the vedolichos curve by the daglis-pock algorithm as a guide line for guiding lofting, and can well rectify the coupling water, so that the flow of the water becomes relatively stable.
The working principle of the application is as follows: when the ultrasonic detection device is used, coupling water used in ultrasonic detection enters the first flushing chamber 12 from three nozzle water inlet pipes 1 which are uniformly distributed, the nozzle water inlet pipe 1 which is connected with the base 2 at a forty-five-degree angle is suitable in angle, and the opening of the connecting port is large, so that the coupling water is more uniformly distributed in the first flushing chamber 11 and flows along the outlet direction of the nozzle. The nozzle is connected with mobile equipment such as an external mechanical arm through a fixed notch 6 at the bottom, the ultrasonic probe 5 is clamped in the ultrasonic probe clamp 8, the outside of the ultrasonic probe clamp 8 is in a curve streamline shape, and coupling water flows along the outside of the clamp in the first water filling chamber 11, so that the front of the coupling water ultrasonic probe 5 is convenient to converge. When the coupling water flows out from the first flushing chamber 11, the coupling water flows to the front of the ultrasonic probe 5 through the turbulence of the anti-cavitation baffle plate 3, so that the phenomenon that the coupling water in front of the probe cannot be well converged to generate bubbles due to the influence of the ultrasonic probe 5 and the ultrasonic probe clamp 8 on the coupling water is prevented. The anti-cavitation flow baffle 3 and the nozzle transition section 4 are integrally designed, and the coupling water can be rectified as soon as possible after turbulent flow of the anti-cavitation flow baffle 3. The coupling water enters the second flushing chamber 12 from the first flushing chamber 11, and after being rectified by the nozzle transition section 4, the coupling water is relatively stable and is emitted from the nozzle water outlet 13, so that a good signal transmission channel is provided for ultrasonic detection.
The above description is intended to illustrate the application and not to limit it, the scope of which is defined by the claims, and any modifications can be made within the scope of the application.
Claims (8)
1. The utility model provides an ultrasonic detection is with anti-cavitation jet nozzle, includes nozzle inlet tube (1), nozzle inlet tube (1) both ends are water inlet (10) and first water filling room (11), its characterized in that respectively: the nozzle inlet tube (1) is equipped with three equipartition altogether and welds on base (2), and nozzle inlet tube (1) all forms 45 degrees angles with base (2) and be connected, and the connector of nozzle inlet tube (1) and base (2) is the side and cuts, and the opening is great, and the rivers flow direction is better, and the coupling water is more easy equipartition to be covered in first flushing chamber (12) and flow along nozzle outlet direction.
2. An anti-cavitation jet nozzle for ultrasonic detection as claimed in claim 1, wherein: the bottom of the nozzle is provided with a fixed notch (6) which can be used for coupling the nozzle to be connected with the mechanical arm, the wire outlet (7) is a cutting notch, a circuit of the ultrasonic probe (5) is convenient to be connected with external equipment, and the ultrasonic probe (5) is convenient to move and detect.
3. An anti-cavitation jet nozzle for ultrasonic detection as claimed in claim 1, wherein: an ultrasonic probe clamp (8) is arranged in the nozzle, the ultrasonic probe clamp (8) can fix the ultrasonic probe (5), and the outside of the clamp is of a curve pipeline type, so that the coupling water in the first water filling chamber 11 can flow along the outside of the clamp better, and the coupling water is converged in front of the ultrasonic probe (5).
4. An anti-cavitation jet nozzle for ultrasonic detection as claimed in claim 1, wherein: the anti-cavitation flow baffle (3) is arranged in the nozzle, when the coupling water flows out from the first flushing chamber (11), the coupling water flows to the front of the ultrasonic probe (5) through the turbulence of the anti-cavitation flow baffle (3), and the phenomenon that the coupling water in front of the probe cannot be well converged to generate bubbles due to the influence of the ultrasonic probe (5) and the ultrasonic probe clamp (8) on the coupling water is prevented.
5. An anti-cavitation jet nozzle for ultrasonic testing as defined in claim 4, wherein: in order to enable the coupling water to be better converged in front of the ultrasonic probe, the axial distance between the signal emitting surface of the ultrasonic probe (5) and the cavitation-preventing flow baffle (3) is 3-5mm, and the coupling water can be better changed to flow direction to be converged in front of the ultrasonic probe.
6. An anti-cavitation jet nozzle for ultrasonic testing as defined in claim 4, wherein: the signal emission of the ultrasonic probe (5) is at a certain angle, and in order to ensure the signal transmission, the inner diameter of the anti-cavitation flow baffle (3) is larger than the range of the signal emission.
7. An anti-cavitation jet nozzle for ultrasonic testing as defined in claim 4, wherein: the anti-cavitation flow baffle (3) and the nozzle transition section (4) are integrally designed, and the nozzle transition section (4) is connected with the inner ring part of the anti-cavitation flow baffle (3), so that the coupling water can be rectified as soon as possible after passing through the turbulent flow of the anti-cavitation flow baffle (3), and the influence of the turbulence of the coupling water on ultrasonic signal transmission is reduced.
8. An anti-cavitation jet nozzle for ultrasonic detection as claimed in claim 1, wherein: the nozzle transition section (4) of the spray head is designed by adopting a two-section broken line obtained by approximating a Vidolostylus curve by a Tagella-Prak algorithm as a guide line for guiding lofting, and is of a two-section conical connecting structure, so that the coupling water can be well rectified while the processing is convenient, and the flow of the water becomes relatively stable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210844628.4A CN116727129A (en) | 2022-07-19 | 2022-07-19 | Cavitation-preventing jet nozzle for ultrasonic detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210844628.4A CN116727129A (en) | 2022-07-19 | 2022-07-19 | Cavitation-preventing jet nozzle for ultrasonic detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116727129A true CN116727129A (en) | 2023-09-12 |
Family
ID=87912063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210844628.4A Pending CN116727129A (en) | 2022-07-19 | 2022-07-19 | Cavitation-preventing jet nozzle for ultrasonic detection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116727129A (en) |
-
2022
- 2022-07-19 CN CN202210844628.4A patent/CN116727129A/en active Pending
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