CN111976895A - Multi-element acoustic array towing body based on vertical low-resistance follow-up line type design - Google Patents

Abstract

The invention discloses a multi-element acoustic array towed body based on vertical low-resistance follow-up line type design, which comprises a towed platform, a balance tail wing and a multi-element acoustic array frame, wherein a top mounting shell is arranged above the towed platform, the multi-element acoustic array frame is connected with the top towed platform and a bottom mounting seat to form the array frame for mounting an acoustic transducer, towed body shells are arranged outside the towed platform and the multi-element acoustic array frame, an electronic cabin and a non-acoustic sensor are arranged on the towed platform, and the tail part of each towed body shell is connected with the balance tail wing. The invention has good submerging and surfacing characteristics and stable towing attitude, and can be used for carrying multiple large-scale planar acoustic equipment to perform submarine target detection, topographic survey, marine scientific survey, military survey and the like.

Description

A multi-element acoustic array drag body based on vertical low-resistance follow-up linear design

technical field

The invention relates to the field of underwater carrying platforms, in particular to a multi-element acoustic array drag body based on a vertical low-resistance follow-up linear design.

Background technique

The research and development of towing technology has a history of several decades, and it is widely used in the marine field. It is equipped with various acoustic instruments for different purposes, and is used in marine scientific surveys, military surveys, target detection, submarine topography surveys, marine environmental surveys, etc. . As a towed carrier platform, the towed body requires stable attitude, low flow noise, and good sound transmission performance when carrying acoustic transducers. However, according to the continuum theory of fluid mechanics, only slender towed bodies can meet these conditions. . The slender towed body is similar to the torpedo, which has less resistance and vertical follow-up, but there is a contradiction with the square or rectangular array of acoustic transducers, which is often a large area. Adopting the vertical low-resistance follow-up design can effectively reduce the phenomenon that the drag head is damaged due to excessive vertical drag causing the drag body to heel. Using the multi-plane tail to balance the drag attitude stability of the heavier drag body can also achieve a higher size-effect ratio of scale and attitude maintenance.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the deficiencies of the prior art, and to provide a multi-element acoustic array drag body based on a vertical low-resistance follow-up linear design.

The object of the present invention is accomplished through the following technical solutions: This multi-element acoustic array drag body based on the vertical low-resistance follow-up linear design includes a towed platform, a balanced tail and a multi-element acoustic array frame, and the top is installed with a shell. Above the towed platform, the multi-element acoustic array frame is connected to the top towed platform and the bottom mount to form a basic array frame for installing the acoustic transducer. The towed platform and the multi-element acoustic array frame are installed with a towed body shell and an electronic cabin. The Harmonic Acoustic Sensor is installed on the towing platform, and the tail of the towing body shell is connected to install a balance tail; a smooth transition is adopted between the top-mounted shell and the dragging body shell, so that the drag body produces less resistance when it moves vertically downward.

The multi-element acoustic array frame adopts 8 stepped connecting rods to connect the top drag platform and the bottom mounting seat to form a base array frame for installing 24-element acoustic transducers. The connection between the acoustic transducer and the base array frame adopts soft connection.

The balance tail adopts a tail structure with three vertical planes combined with three horizontal planes, including vertically arranged vertical wings A, vertical wings B, vertical wings C and horizontally arranged horizontal wings A, horizontal wings B, and horizontal wings C; An adjustment tail is installed, which is used to adjust and offset the fixed drag angle of the drag body due to the asymmetry of linear processing.

The outer shape of the drag body is wider at the top installation shell, and gradually shrinks downward to a regular line shape at the bottom.

The outer shell of the towing body is made of carbon fiber material, and its thickness is designed with sound permeability, so that it has high sound permeability.

The beneficial effects of the present invention are as follows: the top drag platform of the present invention occupies a large lateral space due to the installation of the electronic cabin and the non-acoustic sensor, and a smooth transition is adopted between the flat multi-element acoustic array that occupies less lateral space, so that the When the drag body moves downward vertically, the resistance is small, which ensures the verticality of the drag body, so that the drag body has a good follow-up, and avoids the tilt of the drag body posture and the drag when the vertical resistance is too large. Damage to the tow cable at the head; the tow body adopts the gravity towing method, so that the tow body has good submersible and buoyant characteristics, good hydrodynamic performance, stable posture during towing, and low flow noise; the array frame adopts the soft connection form to install the transducer, The transmitted signal is not distorted; the tail adopts the layout of three vertical wings and three horizontal wings, and the middle vertical wing is provided with an adjustment wing, which can adjust the fixed towing heel angle caused by the asymmetric processing of the tow body; it has good snorkeling characteristics and stable towing attitude It can be used to carry multiple large-scale planar acoustic equipment for submarine target detection, topographic and geomorphological surveys, marine scientific surveys, military surveys, etc.

Description of drawings

FIG. 1 is a schematic front view of the structure of the present invention.

FIG. 2 is a schematic side view of the structure of the present invention.

FIG. 3 is a schematic top view of the structure of the present invention.

FIG. 4 is a schematic diagram of the internal structure of the present invention.

FIG. 5 is a schematic view of the main line of sight of part A of the top-mounted housing of the present invention.

FIG. 6 is a top view schematic diagram of the top-mounted housing part A of the present invention.

7 is a schematic view of the A-A cross-sectional line of the top-mounted housing part A of the present invention.

FIG. 8 is a left line-of-sight schematic view of part A of the top-mounted housing of the present invention.

FIG. 9 is a horizontal dividing line diagram of the outer edge of the top-mounted housing part A of the present invention.

Figure 10 is a longitudinally split line view of the outer edge of the top mount housing part A of the present invention.

Fig. 11 is a horizontal dividing line drawing of the inner edge of the top-mounted housing part A of the present invention.

Fig. 12 is a line drawing of the longitudinal division of the inner edge of the part A of the top-mounted housing of the present invention.

13 is a schematic view of the main line of sight of the B part of the top-mounted housing of the present invention.

FIG. 14 is a top view line schematic diagram of part B of the top-mounted housing of the present invention.

15 is a schematic view of the A-A cross-sectional line of the B part of the top mount housing of the present invention.

FIG. 16 is a left line-of-sight schematic view of part B of the top-mounted housing of the present invention.

Fig. 17 is a horizontal dividing line drawing of the outer edge of the B part of the top-mounted housing of the present invention.

Figure 18 is a longitudinally split line view of the outer edge of the B part of the top mount housing of the present invention.

Fig. 19 is a line drawing of the horizontal division of the inner edge of the B part of the top-mounted housing of the present invention.

Fig. 20 is a longitudinal division line drawing of the inner edge of the B part of the top-mounted housing of the present invention.

FIG. 21 is a schematic view of the main line of sight of the towing body casing of the present invention.

FIG. 22 is a schematic top view of the towing body shell of the present invention.

FIG. 23 is a schematic view of the cross-sectional line A-A of the towing body casing of the present invention.

FIG. 24 is a left line-of-sight schematic view of the trailing body shell of the present invention.

FIG. 25 is a schematic view of the B-B cross-sectional line of the trailing body casing of the present invention.

FIG. 26 is a line drawing of the outer edge waterline of the trailing body shell of the present invention.

Fig. 27 is a longitudinally divided line diagram of the outer edge of the trailing body shell of the present invention.

FIG. 28 is a line drawing of the inner edge waterline of the trailing body shell of the present invention.

Fig. 29 is a longitudinal division line diagram of the inner edge of the outer casing of the drag body of the present invention.

Reference numeral description: towed platform 1, multi-element acoustic array frame 2, balanced tail 3, towed body shell 4, top mounting shell 5, bottom mounting seat 6, acoustic transducer 7, soft connection 8, vertical wing A9, Vertical wing R10, vertical wing C11, horizontal wing A12, horizontal wing R13, horizontal wing C14, adjusting tail 15, stepped connecting rod 16, electronic cabin 17, non-acoustic sensor 18.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings:

Example: As shown in Figures 1-4, this multi-element acoustic array towed body based on the vertical low-resistance follow-up linear design mainly includes a towed platform 1, a multi-element acoustic array frame 2, a balance tail 3, and a towed body. Housing 4, top mounting shell 5, bottom mounting seat 6, acoustic transducer 7, electronic cabin 17 and non-acoustic sensor 18, the top mounting shell 5 is installed above the towed platform 1, the towed platform 1 and the multi-element acoustic base A drag body shell 4 is installed outside the array frame 2, and the drag body shell 4 is made of carbon fiber material. A smooth transition is adopted between the top-mounted housing and the outer casing of the drag body, so that the drag body produces less resistance when it moves vertically downward. The towing platform 1 is connected and installed on the bottom mounting seat 6 through eight stepped connecting rods 16 to form a multi-element acoustic array frame 2, and a 24-element acoustic transducer 7 is installed on the multi-element acoustic array frame 2, which works at low frequencies. The connection between the acoustic transducer 7 and the multi-element acoustic base array frame 2 adopts a soft connection 8 , so as to cancel the acoustic signal distortion caused by the resonance of the multi-element acoustic base array frame 2 . The electronic cabin 17 and the non-acoustic sensor 18 are installed on the towed platform 1 , and the tail of the towed body shell 4 is connected to install the balance tail 3 . The balance tail 3 includes vertically arranged vertical wings A9, vertical wings R10, vertical wings C11 and horizontally arranged horizontal wings A12, horizontal wings R13, and horizontal wings C14, to ensure the motion stability of the drag body when towing in water, on the vertical wing R10 An adjusting tail 15 is installed to adjust and offset the fixed drag angle of the drag body due to the asymmetry of the linear processing.

The towing body adopts a design with a wider top at the top installation shell (that is, the towing platform 1), and gradually shrinks downward to a regular line at the bottom, and adopts a three-vertical plane combined with three horizontal planes at the tail. Based on this line The towing body of the type design can effectively reduce the resistance of the vertical movement of the towing body due to the dragging of the towing cable when towing, and has a good follow-up performance, thereby protecting the vertical movement safety of the towing equipment. The size design of the towing body should meet the installation of various interior parts. The design of the dragging body should be carried out after the dimensions and installation methods of various equipments are determined in the early stage. The dragging body should be painted several times to minimize the flow noise caused by friction.

A large-scale planar array composed of 24-element acoustic transducers 7 can be installed inside the drag body of the present invention, and the linear shape of the drag body in the vertical and horizontal directions is carried out according to the continuous theory of fluid mechanics and the Bernoulli equation for flow field calculation. It is suboptimized and achieves a good balance between the drag performance and the dragging body of a large-area planar array.

The top mounting shell 5 is formed by splicing two parts A and B. Figures 5-8 disclose the line diagram of the A part of the top mounting shell 5, and Figure 9 is a horizontal dividing line diagram of the outer edge; Figure 10 Fig. 11 is the horizontal dividing line graph of the inner edge; Fig. 12 is the longitudinal dividing line graph of the inner edge.

Station No 0 1 2 3 4 5 I 351.7 323.3 288.1 246.5 197.3 0 II 313.7 281.7 238.9 176.2 / /

Waterline value table (half width)

Station No 0 1 2 3 4 5 A 186.7 171.8 151.9 125.9 90.7 0 B 162.3 145.1 121.2 88 / /

Longitudinal section type value table

Station No 0 1 2 3 4 5 III 339.2 310.7 275.5 233.8 184.5 0 IV 301.9 266.8 220.2 144.1 / /

Waterline value table (half width)

Station No 0 1 2 3 4 5 C 176.7 161.8 141.9 115.9 82 0 D 151.7 134 109.3 73.6 / /

Longitudinal section type value table

Figures 13-16 disclose the line drawing of the B part of the top-mounted housing 5, Figure 17 is a horizontal dividing line drawing of the outer edge; Figure 18 is a vertical dividing line drawing of the outer edge, and Figure 19 is a horizontal dividing line drawing of the inner edge. ; Figure 20 is the inner edge of the longitudinal division line graph.

Station No 0 1 2 3 4 5 I 0 306.7 365.4 380 371.8 351.7 II / 254.1 324.6 342.5 334.8 313.7

Waterline value table (half width)

Station No 0 1 2 3 4 5 A 0 174.6 197 200 196.4 186.7 B / 133.1 169.3 176.9 173.3 162.1

Longitudinal section type value table

Station No 0 1 2 3 4 5 III / 296.8 355.6 370 361.7 341.7 IV / 237.8 310.4 329 321.3 299.4

Waterline value table (half width)

Station No 0 1 2 3 4 5 C / 164.5 187 190 186.4 176.6 D / 121.6 158.8 166.6 163 151.9

Longitudinal section type value table

Figure 21-25 discloses the line diagram of the drag body shell 4, Figure 26 is a line diagram of the outer edge waterline division; Figure 27 is a longitudinal division line diagram of the outer edge, and Figure 28 is a line diagram of the inner edge waterline division; 29 is the longitudinal dividing line diagram of the inner edge.

Station No 0 1 2 3 4 5 6 7 8 9 10 I 0 306.6 365.4 380 371.8 351.7 323.3 288.1 246.5 197.3 0 II 0 265.8 317.6 331.7 326.4 311.1 289.2 261.9 229.6 191.5 0 III 0 228.2 267.8 279.4 276.7 266.8 252.2 233.9 212.3 186.8 0 IV 0 199.2 220.5 227.3 226.4 221.9 214.9 206.2 195.9 183.7 0 V 0 182.5 182.5 182.5 182.5 182.5 182.5 182.5 182.5 182.5 0

Outer edge waterplane value table (half width)

Station No 0 1 2 3 4 5 6 7 8 9 10 A 0 1186 1383 1410 1409 1393 1360 1290 1098 / / B / 457 864 949 933 861 716 427 / / / C / / 381 490 451 319 66 / / / /

Outer edge longitudinal section type value table

Station No 0 1 2 3 4 5 6 7 8 9 10 VI / 298 357.3 372 363.8 343.6 315.2 280 238.3 189.1 / VII / 257.3 309.3 323.6 318.2 303.2 281.1 253.9 221.5 183.4 / VIII / 220 259.4 271.3 268.6 258.8 244.1 225.9 204.2 178.7 / IX / 191.2 212.5 219.2 218.3 214.1 207 198.2 187.7 175.7 / X / 174 174 174 174 174 174 174 174 174 /

Inner edge waterplane value table (half width)

Station No 0 1 2 3 4 5 6 7 8 9 10 D / 1061 1310 1348 1345 1322 1274 1174 902 / / E / 374 318 428 386 246 / / / / / F / / 797 887 869 789 629 313 / / /

Inner edge longitudinal section type value table (half width)

The installation process of the present invention:

The installation sequence of the tow body is carried out in the form of the tow body and the balance tail 3 being installed separately and finally closed. The towing body is first installed on the acoustic array, and the acoustic transducer 7 is installed on the stepped connecting rod 16 by means of a soft connection 8 . After the sound transducer 7 is installed, the towed platform 1 and the stepped connecting rod 16 are installed together. The internal electronic cabin is installed inside the multi-element acoustic array frame 2, and the wiring of the acoustic transducer 7 is performed. After the installation of the multi-element acoustic array frame 2 and the acoustic transducer 7 is completed, the whole is "sleeved" into the main body of the dragging body and fixed with screws outside the body of the dragging body. Install the top non-acoustic sensor 18 and electronics compartment 17 and make cable connections. Finally, install the rear wing support rod and install the top mounting housing 5. The balance tail 3 first installs the horizontal wing B13, then installs the vertical wing B10, the vertical wing A9 and the vertical wing C11 in sequence, and finally installs the horizontal wing A12 and the horizontal wing C14. After the balance tail 3 is installed on the main body of the towing body by using the support rod, the integration of the whole towing body is completed.

It can be understood that, for those skilled in the art, equivalent replacements or changes to the technical solutions and inventive concepts of the present invention shall fall within the protection scope of the appended claims of the present invention.

Claims (4)

1. a multi-element acoustic array drag body based on vertical low-resistance follow-up linear design, is characterized in that: comprise towed platform (1), balanced tail (3) and multi-element acoustic array frame (2), top mounting shell The body (5) is installed above the towing platform (1), and the multi-element acoustic array frame (2) is connected to the top towing platform (1) and the bottom mounting seat (6) to form a basic array for installing the acoustic transducer (7). A towed body shell (4) is installed on the outside of the towed platform (1) and the multi-element acoustic array frame (2), the electronic cabin (17) and the non-acoustic sensor (18) are installed on the towed platform (1), and the towed body A balance tail (3) is connected to the rear of the shell (4); a smooth transition is adopted between the top-mounted shell (5) and the drag body shell (4), so that the drag body generates less resistance when it moves vertically downward. 2. The multi-element acoustic array drag body based on the vertical low-resistance follow-up linear design according to claim 1, wherein the multi-element acoustic array frame (2) adopts 8 stepped connecting rods (16) Connect the top drag platform (1) and the bottom mounting seat (6) to form a base array frame for installing the 24-element acoustic transducer (7), and the connection between the acoustic transducer (7) and the base array frame adopts a soft connection (8). 3. The multi-element acoustic array drag body based on the vertical low-resistance follow-up linear design according to claim 1, is characterized in that: the balance tail (3) adopts the tail structure of three vertical planes combined with three horizontal planes, including vertical planes. Vertical Wing A (9), Vertical Wing B (10), Vertical Wing C (11) and Horizontal Wing A (12), Horizontal Wing B (13), Horizontal Wing C (14) arranged horizontally; Vertical Wing B An adjusting tail (15) is installed on the (10), which is used to adjust and offset the fixed drag angle of the drag body due to the asymmetry of the linear processing. 4. The multi-element acoustic array drag body based on the vertical low-resistance follow-up linear design according to claim 1, characterized in that: the shape of the drag body is wider at the top installation shell (5), downwards Gradually shrink to the bottom regular linetype.

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