Near-field holographic scanning array

Abstract

The utility model relates to the technical field of scanning arrays, in particular to a near-field holographic scanning array which comprises a vertical pipe, a plug block, a plurality of supports, a plurality of auxiliary frames and a plurality of hydrophones. The supports are detachably arranged at the lower end of the vertical pipe through the plug blocks and distributed around the axis of the vertical pipe. The plurality of hydrophones are distributed on the support through the auxiliary frame, the auxiliary frame is connected with the support in a sliding mode, and the near-field holographic scanning array can be conveniently disassembled, assembled and transported through the near-field holographic scanning array.

Description

Technical Field

[0001] The utility model relates to the technical field of scanning arrays, and specifically relates to a near-field holographic scanning array. Background Art

[0002] In acoustic research, to obtain information about the radiated sound field from a sonar array, a measurement hydrophone array must be deployed within the radiated sound field. To accurately reconstruct the array's radiated sound field, a sufficiently large measurement hydrophone array is required. To obtain the same radiated sound field information, the closer the array is to the sonar array, the smaller the measurement array required. For cost-effectiveness and efficiency, near-field measurements of the sonar array are the primary choice. Furthermore, to accurately obtain near-field holographic sound field information, a high-precision positioning scanning array is also required.

[0003] Due to size and weight limitations, existing scanning arrays often use stainless steel for their main load-bearing brackets. These brackets are often welded to the mounting flanges and reinforcement ribs. This creates two problems: Stainless steel reflects and diffracts sound waves, affecting measurement accuracy; and long arrays made with welding can be difficult to transport, increasing shipping costs. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a near-field holographic scanning array, which can facilitate disassembly, assembly and transportation of the near-field holographic scanning array.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a near-field holographic scanning array, comprising a vertical tube, a plug, a plurality of brackets, a plurality of sub-frames and a plurality of hydrophones; the plurality of brackets are detachably arranged at the lower end of the vertical tube through the plug, and the plurality of brackets are distributed around the axis of the vertical tube; the plurality of hydrophones are distributed on the brackets through the sub-frames, wherein the sub-frames and the brackets are slidably connected.

[0006] Preferably, the bracket includes a transverse tube; a waist-shaped groove is opened on the transverse tube along its length direction; the head end of the transverse tube is fixed to the plug by screws; and the sub-frame is slidably arranged in the waist-shaped groove.

[0007] Preferably, the sub-frame includes a mounting tube, a connecting plate and a connecting piece; the mounting tube and the hydrophone are arranged correspondingly, and the upper end of the hydrophone is plugged into the lower part of the mounting tube; the upper end of the mounting tube is detachably connected to the connecting plate; the connecting plate is arranged on the lower side of the transverse tube through the connecting piece, and the connecting piece passes through the waist-shaped groove and is slidably connected to the transverse tube.

[0008] Preferably, the connecting parts include bolts, washers, and nuts. The screw rods of the bolts pass through the connecting plates and the waist-shaped grooves. The washers and nuts are sleeved on the screw rods of the bolts, and the washers and nuts are located on the upper side of the transverse tube.

[0009] Preferably, a U-shaped hole is provided at the lower portion of the mounting tube.

[0010] Preferably, the bracket further includes a support tube; one end of the support tube is connected to the middle periphery of the vertical tube by screws, and the other end of the support tube is connected to the middle periphery of the horizontal tube by screws.

[0011] Preferably, there are two mounting tubes, which are distributed on both sides of the transverse tube.

[0012] Preferably, the plug is a T-shaped structure consisting of a vertical rod and a horizontal rod; the vertical rod is connected to the vertical tube by screws, and the horizontal rod is connected to the horizontal tube by screws.

[0013] Preferably, it also includes a hanging ring; the hanging ring is arranged on the middle outer periphery of the vertical pipe.

[0014] Preferably, the vertical tube, horizontal tube and mounting tube are all made of carbon fiber.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The hydrophone is easy to clamp, saving clamping time and improving measurement efficiency;

[0017] 2. The scanning array has high overall strength, light weight, and low reflection, which has little impact on the accuracy of measurement results;

[0018] 3. The number and spacing of hydrophone components can be adjusted according to measurement needs;

[0019] 4. The scanning array can be disassembled and assembled for easy transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the front view structure of the scanning array of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the scanning array of the present invention from a top view;

[0022] Figure 3 This is a schematic diagram of the support frame and hydrophone structure of the utility model;

[0023] Figure 4 This is a schematic diagram of the plug structure of the utility model.

[0024] In the figure: flange 1, vertical pipe 2, vertical connecting block 3, support pipe 4, lifting ring 5, plug 6, horizontal connecting block 7, cross pipe 8, support frame 9, end cover 10, hydrophone 11, mounting pipe 12, joint 13, connecting plate 14, bolt 15, gasket 16, nut 17, vertical rod 61, cross rod 62. DETAILED DESCRIPTION

[0025] The following describes the specific embodiments of the present invention in detail in conjunction with the accompanying drawings so that those skilled in the art can more clearly understand how to practice the present invention. Although the present invention is described in conjunction with its preferred specific embodiments, these embodiments are only illustrative, not limiting, of the scope of the present invention.

[0026] Specific embodiment 1: Please refer to Figure 1-4 A near-field holographic scanning array comprises a main frame, a plurality of sub-frames 9 and a plurality of hydrophones 11. The main frame is triangular and detachable. The plurality of hydrophones 11 are distributed on the lower part of the main frame via a plurality of sub-frames 9. When in use, the upper part of the main frame is fixedly connected to the scanning device. With such a structural arrangement, the near-field holographic scanning array has the advantages of high overall strength, light weight, low reflection, and convenient disassembly, assembly and transportation.

[0027] Specifically, the main frame includes a flange 1, a vertical pipe 2, a hanging ring 5, a plug 6 and two brackets. The flange 1 is fixed to the top of the vertical pipe 2 for fixedly connecting the near-field holographic scanning array and the scanning device; the hanging ring 5 is arranged in the middle of the vertical pipe 2; the plug 6 is a T-shaped structure composed of a vertical rod 61 and a horizontal rod 62. The vertical rod 61 is fixed to the lower end of the vertical pipe 2 by screws. The two brackets are fixed to the vertical pipe 2 through the plug 6, and the two brackets are evenly distributed around the axis of the vertical pipe 2.

[0028] The bracket includes a vertical connecting block 3, a support tube 4, a horizontal connecting block 7, a transverse tube 8, and an end cap 10. The vertical connecting block 3 and the horizontal connecting block 7 are respectively fixed to the two ends of the support tube 4. The vertical connecting block 3 is fixedly connected to the middle periphery of the vertical tube 2, and the horizontal connecting block 7 is fixedly connected to the middle periphery of the transverse tube 8. The arrangement of the support tube 4 can increase the strength of the entire main frame; the head end of the transverse tube 8 is fixedly connected to one end of the transverse rod 62 by screws, and the end cap 10 is provided at the tail end of the transverse tube 8 to seal it;

[0029] The transverse tube 8 is provided with a waist-shaped groove along its length, and a plurality of hydrophones 11 are distributed along the length of the transverse tube 8 through a plurality of sub-frames 9. At the same time, the sub-frames 9 and the transverse tube 8 are slidably connected. Such an arrangement enables the hydrophones 11 to move along the transverse tube 8. In actual application, the distance between two adjacent hydrophones 11 can be changed according to measurement needs.

[0030] Furthermore, the sub-frame 9 includes two mounting tubes 12, two joints 13, a connecting plate 14 and a connecting piece. The mounting tube 12 is arranged corresponding to the joint 13, and the upper end of the mounting tube 12 is fixedly connected to the connecting plate 14 through the joint 13. During implementation, the mounting tube 12 is inserted into the lower end of the joint 13 and fixed with a screw. The upper end of the joint 13 has a threaded hole and is fixed with the connecting plate 14 with a screw; the two mounting tubes 12 are respectively arranged at both ends of the connecting plate 14; the connecting plate 14 is arranged on the lower side of the cross tube 8 through the connecting piece; the connecting piece includes a bolt 15, a gasket 16, and a nut 17. The bolt 15 longitudinally passes through the middle part of the connecting plate 14 and the waist-shaped groove on the cross tube 8. The gasket 16 and the nut 17 are sleeved on the bolt 15 and are located on the upper side of the cross tube 8. The gasket 16 is located on the lower side of the nut 17. The screw of the bolt 15 is slidably connected to the cross tube 8. Pushing the bolt 15 can make the connecting plate 14 slide along the length direction of the waist-shaped groove.

[0031] A U-shaped hole is provided at the lower portion of the mounting tube 12. The mounting tube 12 is arranged corresponding to the hydrophone 11. During installation, the hydrophone 11 is inserted into the lower portion of the mounting tube 12 in a plug-in manner, and the cable of the hydrophone 11 is led out from the upper portion of the U-shaped hole of the mounting tube 12. In addition, for the stability of the device, during implementation, adhesive tape can be wrapped around the outer periphery of the lower portion of the mounting tube 12 to reduce the size of the U-shaped hole opening to reinforce the hydrophone 11 after installation.

[0032] In one embodiment, in order to reduce the impact of the supporting structure on the accuracy of the hydrophone 11, at least part of the components of the main frame and the auxiliary frame are made of carbon fiber material. Specifically, the vertical tube 2, the support tube 4, the horizontal tube 8 and the installation tube 12 are all made of carbon fiber material.

[0033] Through this technical solution, by setting the support frame supporting several hydrophones into a detachable structure, the support frame is made of carbon fiber, so that the near-field holographic scanning array has the advantages of high overall strength, light weight, small reflection, and easy disassembly, assembly and transportation.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A near-field holographic scanning array, characterized by: The invention comprises a vertical pipe (2), a plug (6), a plurality of brackets, a plurality of sub-frames (9) and a plurality of hydrophones (11); the plurality of brackets are detachably arranged at the lower end of the vertical pipe (2) through the plug (6), and the plurality of brackets are distributed around the axis of the vertical pipe (2); the plurality of hydrophones (11) are distributed on the brackets through the sub-frames (9), wherein the sub-frames (9) and the brackets are in sliding connection.

2. The near-field holographic scanning array according to claim 1, characterized in that: The bracket comprises a transverse tube (8); a waist-shaped groove is provided on the transverse tube (8) along its length direction; the head end of the transverse tube (8) is fixed to the plug (6) by screws; and the sub-frame (9) is slidably arranged in the waist-shaped groove.

3. The near-field holographic scanning array according to claim 2, characterized in that: The sub-frame (9) includes a mounting tube (12), a connecting plate (14) and a connecting piece; the mounting tube (12) and the hydrophone (11) are arranged correspondingly, and the upper end of the hydrophone (11) is plugged into the lower part of the mounting tube (12); the upper end of the mounting tube (12) is detachably connected to the connecting plate (14); the connecting plate (14) is arranged on the lower side of the transverse tube (8) through the connecting piece, and the connecting piece passes through the waist-shaped groove and is slidably connected to the transverse tube (8).

4. The near-field holographic scanning array according to claim 3, characterized in that: The connecting piece comprises a bolt, a washer, and a nut. The screw rod of the bolt passes through the connecting plate (14) and the waist-shaped groove. The washer and the nut are sleeved on the screw rod of the bolt, and the washer and the nut are located on the upper side of the horizontal tube (8).

5. The near-field holographic scanning array according to claim 3, characterized in that: A U-shaped hole is provided at the lower portion of the mounting tube (12).

6. The near-field holographic scanning array according to claim 2, characterized in that: The bracket further comprises a support tube (4); one end of the support tube (4) is connected to the middle periphery of the vertical tube (2) by screws, and the other end is connected to the middle periphery of the horizontal tube (8) by screws.

7. The near-field holographic scanning array according to claim 3, characterized in that: There are two mounting tubes (12), and the two mounting tubes (12) are distributed on both sides of the transverse tube (8).

8. The near-field holographic scanning array according to claim 2, characterized in that: The plug (6) is a T-shaped structure consisting of a vertical rod and a horizontal rod; the vertical rod is connected to the vertical tube (2) by screws, and the horizontal rod is connected to the horizontal tube (8) by screws.

9. The near-field holographic scanning array according to claim 1, characterized in that: It also includes a lifting ring (5); the lifting ring (5) is arranged on the outer periphery of the middle part of the vertical pipe (2).

10. The near-field holographic scanning array according to claim 3, characterized in that: The vertical tube (2), horizontal tube (8) and mounting tube (12) are all made of carbon fiber material.

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