A fluid supply structure for a phased array probe

Abstract

This application relates to the field of ultrasonic measurement technology, and more particularly to a fluid supply structure for a phased array probe. It includes a housing with an inlet, an outlet, and an inner cavity. The inner cavity communicates with the inlet and outlet, and contains a flow channel. The flow channel includes, along the fluid flow direction and in communication with, an inlet guiding section, a diffusion stabilizing section, a buffer transition section, a flow stabilizing cavity section, and a uniform outflow section. The inlet guiding section communicates with the inlet, and the uniform outflow section communicates with the outlet. The buffer transition section has a protrusion to guide the incoming fluid to the flow channel regions on both sides. This addresses the problems of unstable fluid flow and uneven water pressure in existing fluid supply structures, which affect detection accuracy.

Description

Technical Field

[0001] This application relates to the field of ultrasonic measurement technology, and more particularly to a fluid supply structure for a phased array probe. Background Technology

[0002] In detection using technologies such as ultrasound, it is often necessary to form a water coupling layer (or fluid layer) between the probe and the object under test through a fluid structure to transmit signals.

[0003] However, in existing technologies, the fluid layer water flow in the fluid supply structure is unstable and the water pressure is uneven, which affects the detection accuracy.

[0004] Therefore, developing a fluid supply structure that can provide a stable, uniform, and low-disturbance water coupling layer has become an urgent technical problem to be solved in this field. Summary of the Invention

[0005] The purpose of this application is to provide a fluid supply structure for a phased array probe to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this application provides the following technical solution: A fluid supply structure for a phased array probe includes a housing, the housing having an inlet, an outlet, and an inner cavity, the inner cavity being connected to the inlet and the outlet, characterized in that a flow channel is provided in the inner cavity; The flow channel includes an inlet guide section, a diffusion and flow stabilization section, a buffer transition section, a flow stabilization cavity section, and a uniform outflow section, which are arranged and connected along the fluid flow direction. The inlet guide section is connected to the inlet, and the uniform outflow section is connected to the outlet; The buffer transition section has a protrusion in the middle, which is used to guide the inflowing fluid to the flow channel areas on both sides.

[0007] Furthermore, the inlet guide section is located above the diffusion and flow stabilization section, the buffer transition section is located below the diffusion and flow stabilization section, and the flow stabilization cavity section and the buffer transition section are arranged horizontally relative to the diffusion and flow stabilization section.

[0008] Furthermore, the diffusion and flow stabilization section is a trough-shaped cavity inclined to the water inlet guide section. The cavity wall of the trough-shaped cavity extends outward from top to bottom, and the lower end of the trough-shaped cavity is connected to the inlet of the buffer transition section.

[0009] Furthermore, the groove-shaped cavity includes a first expansion section and a second expansion section arranged sequentially along the flow direction, wherein the flow cross-sectional area of ​​the second expansion section is larger than the flow cross-sectional area of ​​the first expansion section.

[0010] Furthermore, the protrusion is a V-shaped guide ridge extending along the fluid flow direction, and the flow channel area is a groove provided on both sides of the protrusion; the protrusion is used to split the fluid flowing into the buffer transition section into two streams, and guide them to the grooves on both sides respectively.

[0011] Furthermore, the groove wall is an arc-shaped surface.

[0012] Furthermore, the connection between the buffer transition section and the flow stabilizing cavity section is a narrow flow channel structure, which is used to organize the fluid flowing through the buffer transition section into a uniform water layer before entering the flow stabilizing cavity section.

[0013] Furthermore, the flow cross-section of the stabilizing cavity section gradually expands along the fluid flow direction.

[0014] Furthermore, the equivalent expansion angle of the cross-sectional area of ​​the flow stabilizing cavity section along the fluid flow direction is 7° to 12°.

[0015] Furthermore, the uniform outflow section includes a plurality of outflow holes that are obliquely upward relative to the flow stabilizing cavity section.

[0016] The technical solutions provided in this application have the following advantages compared with the prior art: This technical solution provides a fluid supply structure for a phased array probe. Its internal cavity contains a series of interconnected sections along the flow direction: an inlet guide section, a diffusion and stabilization section, a buffer transition section, a stabilization cavity section, and a uniform outflow section, forming a multi-stage rectification channel. The buffer transition section has protrusions to guide the incoming fluid to the flow channels on both sides. Based on this structure, the fluid undergoes multiple processes—guided flow, diffusion, forced diversion, buffering, stabilization, and uniform distribution—effectively dissipating fluid kinetic energy, suppressing turbulence, and restoring static pressure. This solves problems such as unstable water flow, bubble generation, and uneven pressure in existing technologies, improving fluid stability and uniformity. It can form a stable fluid layer with uniform thickness and low turbulence below the probe, thereby improving signal transmission stability and detection accuracy. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0020] Figure 1 An external structural diagram of a fluid supply structure for a phased array probe provided in an embodiment of this application; Figure 2 A cross-sectional view of a fluid supply structure for a phased array probe provided in an embodiment of this application; Figure 3 A top cross-sectional view of a fluid supply structure for a phased array probe provided in an embodiment of this application; Figure 4 This is a structural diagram of the lower housing provided in an embodiment of this application.

[0021] Explanation of reference numerals in the attached figures: 1. Shell; 11. Upper shell; 111. Recessed area; 12. Lower shell; 121. Protrusion; 122. Groove; 13. Inlet; 14. Inner cavity; 15. Outlet; 16. Inlet guide section; 17. Diffusion and flow stabilization section; 171. First expansion section; 172. Second expansion section; 18. Buffer transition section; 181. Narrow flow channel; 19. Flow stabilization cavity section; 191. Flow stabilization cavity inlet; 192. Flow stabilization cavity outlet; 20. Uniform outflow section; 201. Outflow hole. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0024] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0025] To address the technical problems of unstable water flow and uneven water pressure in existing fluid supply structures, this application provides a fluid supply structure for a phased array probe that can solve the aforementioned technical problems.

[0026] like Figures 1 to 4 As shown in the figure, this embodiment provides a fluid supply structure for a phased array probe, which is assembled on an ultrasonic probe. The fluid supply structure includes a housing 1, which can be integrally formed or a split structure depending on the actual assembly requirements.

[0027] In a specific embodiment of a split structure, the housing 1 includes an upper housing 11 and a lower housing 12 that are interlocked. The upper housing 11 has a recessed area 111 for accommodating and mounting a probe. The outer bottom of the lower housing 12 is used to contact or be positioned opposite the object to be detected. When the inner cavity 14 is filled with a coupling fluid (hereinafter referred to as the fluid, which is coupling water in this embodiment), a flowing fluid layer is formed between the probe and the lower housing 12, and the detection signal emitted by the probe is transmitted to the surface of the object to be detected through this fluid layer.

[0028] In this embodiment, the upper housing 11 and the lower housing 12 together form the inner cavity 14 of the housing 1. A water inlet 13 is provided on one side of the housing 1, and a water outlet 15 is provided on the other side. Specifically, the water inlet 13 is located at the top of the upper housing 11 for introducing fluid; the water outlet 15 is located on the side of the upper housing 11 for discharging fluid. Both the water inlet 13 and the water outlet 15 are connected to the inner cavity 14, and fluid entering through the water inlet 13 is ejected through the inner cavity 14 and exited through the water outlet 15. The portion of the lower housing 12 located within the inner cavity 14 receives the fluid from the water inlet 13, and its main function is to use its structure to block and guide the fluid, preventing high-pressure fluid from directly impacting the surface of the object to be tested.

[0029] like Figures 2 to 4 As shown, the inner cavity 14 is provided with a flow channel; the flow channel includes: an inlet guide section 16, a diffusion and stabilizing section 17, a buffer transition section 18, a flow stabilizing cavity section 19, and a uniform outflow section 20, which are arranged and connected along the fluid flow direction; the inlet guide section 16 communicates with the inlet 13, and the uniform outflow section 20 communicates with the outlet 15. The buffer transition section 18 includes a protrusion 121 located at its center and grooves 122 located on both sides of the protrusion 121. The protrusion 121 is used to split the fluid flowing into the buffer transition section 18 into two streams and guide them to the grooves 122 on both sides respectively.

[0030] When the fluid supply structure is in use, the fluid flow process is as follows: the fluid flows from the inlet 13 into the inlet guide section 16; the inlet guide section 16 transports the fluid to the buffer diffusion stabilizing section 17, which divides the fluid into two streams, and the two fluid streams enter the buffer transition section 18; the buffer transition section 18 transports the two fluid streams to the stabilizing cavity section 19 with a gradually expanding cross-sectional area, so that the two fluid streams mix in the stabilizing cavity section 19 to form a mixed fluid; the mixed fluid in the stabilizing cavity section 19 flows out through the outlet hole 201, which is connected to the stabilizing cavity section 19 and located on the uniform outlet section 20.

[0031] It should be understood that by sequentially arranging and connecting the inlet guide section 16, the diffusion and stabilizing section 17, the buffer transition section 18, the stabilizing cavity section 19, and the uniform outflow section 20 along the fluid flow direction in the inner cavity 14 of the housing 1, a multi-stage rectification and buffering channel is formed. The buffer transition section 18 is further provided with a protrusion 121 located at its center and grooves 122 located on both sides of the protrusion 121. The protrusion 121 forces the fluid flowing into the buffer transition section 18 from upstream into two streams, which are then guided to the grooves 122 on both sides.

[0032] Based on the above structure, the fluid needs to undergo multiple processes in sequence before entering the final outlet 15: guidance, diffusion, forced diversion, buffering, stabilization, and uniform distribution. After being introduced through the inlet guide section 16, the fluid undergoes initial deceleration and flow direction adjustment in the diffusion and stabilization section 17. Then, it enters the buffer transition section 18, where the protrusion 121 achieves active symmetrical distribution of flow rate, eliminating flow deviation from the source, and smoothly guiding the fluid downstream through the grooves on both sides 122. After diversion, the fluid enters the stabilization cavity section 19 for further deceleration and pressure diffusion, achieving kinetic energy dissipation and static pressure recovery. Finally, it flows out in a stable and uniform flow state through the uniform outlet section 20.

[0033] Through the synergistic effect of the aforementioned multi-stage flow channels, this technical solution effectively dissipates the kinetic energy of fluid flow, suppresses turbulence generation, and restores static pressure, thereby solving the technical problems of unstable fluid flow, easy generation of turbulent bubbles, and uneven pressure distribution in existing fluid supply structures. Based on this, this technical solution effectively improves the stability and uniformity of the fluid in the fluid supply structure, forming a stable fluid layer with uniform thickness and low turbulence beneath precision components such as probes, thereby improving the stability of signal transmission and detection accuracy.

[0034] like Figure 2 As shown, the inlet guide section 16 is located above the diffusion and flow stabilization section 17, the buffer transition section 18 is located below the diffusion and flow stabilization section 17, and the flow stabilization cavity section 19 is arranged horizontally with the buffer transition section 18.

[0035] In this embodiment, the water inlet guide section 16 is specifically configured as a vertical or near-vertical circular hole with a diameter of D1. The circular hole has two openings, one of which serves as the water inlet 13 and communicates with the outside, while the other end is connected to the diffusion and flow stabilization section 17.

[0036] like Figure 3 As shown, the diffusion and flow stabilization section 17 is a trough-shaped cavity that is inclined to the water inlet guide section 16. The cavity wall of the trough-shaped cavity extends outward from top to bottom, and the lower end of the trough-shaped cavity is connected to the inlet of the buffer transition section 18.

[0037] During operation, the fluid flows in from the inlet 13, flows vertically downward along the wall of the inlet guide section 16, and then enters the diffusion and stabilization section 17.

[0038] Specifically, such as Figure 3As shown, the diffusion and stabilization section 17 includes a first expansion section 171 and a second expansion section 172 arranged sequentially along the flow direction, which together constitute the groove-shaped cavity. In the downward extending direction, the flow cross-sectional area of ​​the second expansion section 172 is larger than that of the first expansion section 171, thus causing the fluid to experience gradual deceleration as it flows through the diffusion and stabilization section 17, rather than a sudden decrease in velocity. This staged deceleration design helps to further suppress the generation of eddies and reduce the risk of fluid stagnation or air entrainment in this region.

[0039] Simultaneously, the outlet of the second expansion section 172 is precisely aligned with the inlet of the buffer transition section 18. Guided by the cavity wall of the second expansion section 172, the fluid is evenly distributed to both sides of the trough-shaped cavity and flows smoothly into the buffer transition section 18, laying a good foundation for the subsequent forced diversion of the fluid into two streams.

[0040] However, the flow stabilizing cavity section 19 and the buffer transition section 18 are arranged horizontally relative to the diffusion flow stabilizing section 17. This means that when the fluid enters the buffer transition section 18 after passing through the diffusion flow stabilizing section 17, it needs to change from a vertical flow direction to a horizontal flow direction. The water flow is initially decelerated and pressurized in the buffer transition section 18, effectively suppressing flow separation and eddies that may occur during the turning process, ensuring that the fluid enters the flow stabilizing cavity section 19 in a stable and uniform flow state.

[0041] Specifically, such as Figure 4 As shown, the housing 1 includes a lower housing 12, and a buffer transition section 18 is disposed on the lower housing 12. The buffer transition section 18 includes a protrusion 121 located at the center of the lower housing 12 and grooves 122 located on both sides of the protrusion 121. The cross-section of each groove 122 gradually narrows from the inlet to the outlet of the buffer transition section 18. The protrusion 121 is a V-shaped guide ridge extending along the fluid flow direction, used to split the fluid flowing into the buffer transition section 18 into two streams and guide them to the grooves 122 on both sides respectively. The groove walls of the grooves 122 are arc-shaped surfaces.

[0042] When fluid flows vertically into the buffer transition section 18 from above, it first impacts the V-shaped guide ridge and is forcibly and symmetrically divided into two streams, left and right. This active diversion mechanism eliminates flow deviation at the source, ensuring that the two streams have equal flow rates and symmetrical directions. Subsequently, the two streams enter the grooves 122 on both sides. The cross-section of the grooves 122 gradually narrows from the inlet to the outlet, and their smooth arc-shaped walls apply a controllable acceleration effect to the water flow, compensating for the kinetic energy loss that may occur due to the change in flow direction and maintaining sufficient flow pressure. At the same time, the gradually narrowing flow channel formed by each groove 122 has a rectifying effect on the water flow, which can suppress turbulence and vortices that may be generated during the turning process, allowing the water flow to leave the buffer transition section 18 in a more stable and uniform state.

[0043] This technical solution effectively solves the technical problems of turbulence, uneven flow distribution, and large pressure fluctuations that are easily generated by direct fluid impact on the diversion structure in the prior art. The V-shaped guide ridge achieves symmetrical flow distribution, and the tapered groove 122 achieves smooth flow direction and pressure maintenance. The two work together to ensure that the fluid has a stable and uniform flow state before entering the downstream steady flow cavity section 19.

[0044] Furthermore, as shown in Figure 2, the connection between the buffer transition section 18 and the stabilizing cavity section 19 is a narrow and elongated flow channel structure. This narrow and elongated flow channel 181 ensures that the fluid flowing out of the buffer transition section 18 is organized into a uniform water layer before entering the stabilizing cavity section 19, laying the foundation for the subsequent formation of a stable, uniform, and low-disturbance water coupling layer, thereby improving the stability and accuracy of the probe detection signal.

[0045] After the fluid layer enters the stabilizing cavity section 19, the flow cross-section of the stabilizing cavity section 19 gradually expands along the fluid flow direction. The cross-sectional area of ​​the stabilizing cavity inlet 191 is smaller than that of the stabilizing cavity outlet 192. According to the principles of fluid mechanics, the gradual expansion of the flow cross-section causes the water flow velocity to decrease smoothly, and part of the dynamic pressure is converted into static pressure, achieving static pressure recovery. This process solves the problem of instability of the coupling layer caused by excessively high flow velocity and insufficient pressure in the prior art.

[0046] Furthermore, the equivalent expansion angle α of the cross-sectional area of ​​the flow stabilizing cavity section 19 along the fluid flow direction is 7° to 12°.

[0047] In one specific embodiment, the inlet of the flow stabilizing cavity section 19 is a rectangle of 8.5mm × 3.2mm (cross-sectional area ≈ 27.2mm²), and the outlet is a rectangle of 14.6mm × 5.8mm (cross-sectional area ≈ 84.7mm²), with a central streamline length of 36.0mm. According to the formula: Where A_in and A_out are the inlet and outlet cross-sectional areas, respectively, and L is the cavity length. The theoretical equivalent expansion angle α is approximately 7.16°; this angle falls precisely within the preferred range of 7° to 12° claimed by this invention.

[0048] CFD simulations have verified that, at this expansion angle, the flow in the steady flow cavity section 19 is stable, the flow velocity decreases uniformly along the flow path, the static pressure recovers gradually, no flow separation or backflow occurs near the wall, and the turbulence intensity in the cavity is significantly reduced by about 62% compared to the inlet.

[0049] Simulation results also show that when the expansion angle is less than 7°, although the flow is more stable, the excessive length of the cavity leads to increased frictional losses; when the expansion angle is greater than 12°, obvious flow separation and eddies begin to appear. Therefore, the simulation data of this embodiment fully verify that controlling the equivalent expansion angle within the range of 7°~12° can balance the flow stabilization effect and structural compactness, which is a key parameter for achieving the purpose of this invention.

[0050] This design, by controlling the equivalent expansion angle between 7° and 12°, avoids both excessively slow expansion leading to an overly long cavity and increased frictional losses, and excessively rapid expansion causing flow separation and large-scale eddies. This facilitates the formation of a stable, low-velocity, high-pressure, and uniformly distributed flow within the steady-flow cavity section 19, providing crucial support for the subsequent formation of a stable water coupling layer with uniform thickness and extremely low turbulence through the uniform outflow section 20. This significantly improves the stability and accuracy of the probe's detection signal.

[0051] like Figure 2 As shown, the uniform outflow section 20 is located at the end of the flow stabilizing cavity section 19 and is directly connected to the flow stabilizing cavity section 19. In this embodiment, the uniform outflow section 20 includes a plurality of outflow holes 201 obliquely upward arranged relative to the flow stabilizing cavity section 19. Preferably, there are four, each of the outflow holes 201 being obliquely upward arranged relative to the flow stabilizing cavity section 19, that is, the axis of the outflow hole 201 forms an acute angle with the horizontal plane, so that the fluid flowing out of the outflow hole 201 has an upward velocity component. This angle ensures that the fluid fills the flow stabilizing cavity before flowing out, effectively guiding the mixed micro-bubbles to be discharged upward with the water flow, avoiding bubble retention or aggregation and causing interference signals to the detection area.

[0052] In a preferred embodiment, the acute angle θ between the axis of the outlet orifice 201 and the horizontal plane is 15° to 60°. It is understood that when the angle θ is less than 15°, the outlet orifice 201 is too close to the horizontal direction, making it difficult to generate sufficient back pressure to fill the cavity before the water flows out, easily leading to intermittent flow or direct dripping, and also hindering the upward discharge of bubbles. When the angle θ is greater than 60°, the outlet orifice 201 is too close to the vertical direction; although the water can smoothly fill the cavity, the spray direction is too upward, which may prevent the fluid from effectively entering the gap between the probe and the object being detected. Controlling the angle θ within the range of 15° to 60° ensures an optimal balance between flow continuity, bubble discharge effect, and the quality of coupling layer formation.

[0053] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0054] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0056] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0057] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0058] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0059] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Since these modifications and variations fall within the scope of the claims and their equivalents, this application also intends to include these modifications and variations.

[0060] The above description describes specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A fluid supply structure for a phased array probe, comprising a housing, the housing having an inlet, an outlet, and an inner cavity, the inner cavity communicating with the inlet and the outlet, characterized in that, The inner cavity is provided with a flow channel; The flow channel includes an inlet guide section, a diffusion and flow stabilization section, a buffer transition section, a flow stabilization cavity section, and a uniform outflow section, which are arranged and connected along the fluid flow direction. The inlet guide section is connected to the inlet, and the uniform outflow section is connected to the outlet; The buffer transition section is provided with protrusions, which are used to guide the inflowing fluid to the flow channel areas on both sides.

2. The fluid supply structure for a phased array probe according to claim 1, characterized in that, The inlet guide section is located above the diffusion and flow stabilization section, the buffer transition section is located below the diffusion and flow stabilization section, and the flow stabilization cavity section and the buffer transition section are arranged horizontally relative to the diffusion and flow stabilization section.

3. The fluid supply structure for a phased array probe according to claim 1, characterized in that, The diffusion and flow stabilization section is a trough-shaped cavity inclined to the water inlet guide section. The cavity wall of the trough-shaped cavity extends outward from top to bottom, and the lower end of the trough-shaped cavity is connected to the inlet of the buffer transition section.

4. The fluid supply structure for a phased array probe according to claim 3, characterized in that, The groove-shaped cavity includes a first expansion section and a second expansion section arranged sequentially along the flow direction, wherein the flow cross-sectional area of ​​the second expansion section is larger than that of the first expansion section.

5. The fluid supply structure for a phased array probe according to claim 1, characterized in that, The protrusion is a V-shaped guide ridge extending along the fluid flow direction, and the flow channel area is a groove provided on both sides of the protrusion; the protrusion is used to split the fluid flowing into the buffer transition section into two streams and guide them to the grooves on both sides respectively.

6. The fluid supply structure for a phased array probe according to claim 5, characterized in that, The groove wall is an arc-shaped surface.

7. The fluid supply structure for a phased array probe according to claim 1, characterized in that, The connection between the buffer transition section and the flow stabilizing cavity section is a narrow flow channel structure, which is used to organize the fluid flowing through the buffer transition section into a uniform water layer before entering the flow stabilizing cavity section.

8. The fluid supply structure for a phased array probe according to claim 1, characterized in that, The flow cross-section of the stabilizing cavity section gradually expands along the fluid flow direction.

9. A fluid supply structure for a phased array probe according to claim 7, characterized in that, The equivalent expansion angle of the cross-sectional area of ​​the stabilizing cavity section along the fluid flow direction is 7° to 12°.

10. A fluid supply structure for a phased array probe according to claim 1, characterized in that, The uniform outflow section includes multiple outflow holes that are obliquely upward relative to the flow stabilizing cavity section.

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