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CN-121977686-A - Differential pressure type multi-element vector hydrophone array

CN121977686ACN 121977686 ACN121977686 ACN 121977686ACN-121977686-A

Abstract

The invention provides a differential pressure type multi-element vector hydrophone array which has the characteristics of differential pressure type vectors, excellent acoustic performance and stability and reliability. The hydrophone array comprises a plurality of vibrating elements, an integral array mounting frame, an oil-filled outer tube and watertight cables, wherein the vibrating elements are linearly arranged on the integral array mounting frame at intervals, the oil-filled outer tube is wrapped outside the integral array mounting frame provided with the vibrating elements, one end of each watertight cable is used for being connected with rear-end equipment, and the other end of each watertight cable is arranged on the integral array mounting frame and is electrically connected with each vibrating element in the integral array mounting frame.

Inventors

  • ZHANG MINGLU
  • LIU ZHE
  • MENG XIANLIN
  • ZHANG ZHIXIN
  • CHENG BOYU
  • ZHANG TIANYI

Assignees

  • 中船辽海装备有限责任公司

Dates

Publication Date
20260505
Application Date
20251218

Claims (8)

  1. 1. The differential pressure type multi-element vector hydrophone array is characterized by comprising a plurality of vibrating elements (1), an integral array mounting frame (6), an oil-filled outer tube (8) and watertight cables (9); The vibration elements (1) are linearly arranged and are arranged on the whole array mounting frame (6) at intervals, and an oil-filled outer tube (8) is wrapped outside the whole array mounting frame (6) provided with the vibration elements (1); one end of the watertight cable (9) is used for being connected with the rear-end equipment, and the other end of the watertight cable is arranged on the whole array installation frame (6) and is electrically connected with each vibrating element (1) in the whole array installation frame (6); The vibrating element (1) comprises six piezoelectric ceramic vibrators (101), a base (103), a differential front-discharging plate (104) and a vibrating element mounting frame (5), wherein the base (103) is of a regular hexahedral structure, concave bowl-shaped structures are arranged on six surfaces of the base and are used for mounting the piezoelectric ceramic vibrators (101), and each piezoelectric ceramic vibrator (101) is correspondingly provided with a vibrator wire-out member (102) as a connector; The differential front-end amplification plate (104) is electrically connected with each piezoelectric ceramic vibrator (101) and is used for processing the front end of a differential pressure vector signal, and the differential front-end amplification plate (104) is electrically connected with the watertight cable (9); the vibrating element installation frame (5) is used for installing the vibrating element (1) on the whole array installation frame (6).
  2. 2. The differential pressure type multi-element vector hydrophone array according to claim 1, characterized in that the whole array mounting frame (6) comprises end supporting plates (601) at two ends and a plurality of supporting rods (602) arranged between the two end supporting plates (601); Adjacent vibrating elements (1) are connected through supporting rods (602), the vibrating elements (1) at two ends are connected with end supporting plates (601) at corresponding ends through the supporting rods (602), and linear arrangement of a plurality of vibrating elements (1) on the whole array mounting frame (6) is achieved; The oil-filled outer tube (8) is arranged between the end supporting plates (601) at the two ends, wraps the vibrating element (1) and the supporting rods (602) between the end supporting plates (601) at the two ends, and forms a structure with two ends sealed and filled with oil all around.
  3. 3. The differential pressure type multi-element vector hydrophone array according to claim 2, wherein the end supporting plates (601) at two ends of the whole array mounting frame (6) are provided with hole sites for mounting hanging rings.
  4. 4. A differential pressure type multi-element vector hydrophone array as recited in claim 1,2 or 3, wherein said differential front-end plate (104) is embedded Yu Zhenyuan on a mounting frame (5) for silently shielding said electro-ceramic vibrator (101).
  5. 5. The differential pressure type multi-element vector hydrophone array of claim 2, wherein the vibrating element installation frame (5) comprises nylon discs (501) arranged at the left side and the right side of the vibrating element (1) and a plurality of metal connecting rods (502) arranged between the nylon discs (501) at the two sides; The vibrating element (1) is also connected with the nylon disc (501) through a metal connecting rod (502); The nylon disc (501) is connected with a supporting rod (602) in the whole array installation frame.
  6. 6. The differential pressure type multi-element vector hydrophone array according to claim 5, wherein the connection part of the nylon disc (501) of the vibrating element installation frame (5) and the supporting rod (602) of the whole array installation frame (6) and the connection part of the nylon disc (501) and the connecting rod (502) are provided with stop members (7).
  7. 7. The differential pressure type multi-element vector hydrophone array of claim 6, wherein the stop member (7) comprises a groove (701) arranged on the nylon disc (501) and used for enabling the connecting rod (502) and the supporting rod (602) to be inserted, a threaded hole is formed in the hole bottom of the groove (701), limit surfaces are arranged on two opposite sides of the connecting rod (502) and the supporting rod (602), limit protrusions (702) are arranged in corresponding positions in the groove (701), and after the connecting rod (502) and the supporting rod (602) are inserted into the groove (701) on the nylon disc (501), the limit protrusions on two sides of the groove (701) are abutted against the limit surfaces at corresponding positions of the connecting rod (502) and the supporting rod (602) and then are screwed down at the groove bottom through bolts to realize stop.
  8. 8. The differential pressure type multi-element vector hydrophone array of claim 7, wherein the bolts use hexagonal bolts, the stop member (7) further comprising a stop tab (703) for the hexagonal bolt stop; The limiting piece (703) is arranged on the bolt connection surface, after the bolt passes through the limiting piece (703) and is screwed, one end of the limiting piece (703) is bent to clamp one surface of the head of the hexagonal bolt, and the other end of the limiting piece 703 is clamped into a limiting groove at a corresponding position on the nylon disc (501).

Description

Differential pressure type multi-element vector hydrophone array Technical Field The invention relates to a hydrophone array, in particular to a differential pressure type multi-element vector hydrophone array, and belongs to the technical field of vector hydrophones. Background Hydrophones are devices that convert acoustic signals into electrical signals, in sonar, that are equivalent to antennas in radio equipment for receiving acoustic waves underwater. Hydrophones are important parts of sonar, and are not separated from underwater detection, identification and communication, marine environment detection and marine resource development. Hydrophone arrays integrate hydrophones together for better performance, with linear arrays being one of the widely used types of simply structured hydrophone arrays. The vector hydrophone can simultaneously measure scalar sound pressure and vector particle vibration velocity of an underwater sound field and restore the sound wave propagation direction, so that richer sound field information is obtained, and the vector hydrophone plays an increasingly important role in modern underwater sound engineering. The differential pressure type vector hydrophone indirectly calculates particle vibration velocity by measuring the difference value of sound pressure of two points in space, and has simple installation structure and stable and reliable performance. At present, the pressure difference vector hydrophone is characterized in that the vibrator is protruded out of the base to be nearly one time of the size, so that the vibrator is larger in size and easy to damage, and the pressure difference vector hydrophone is fewer in array form, and even if the array form is adopted, each vibrator is independently packaged, and sound shielding is easy to generate during array installation. Disclosure of Invention In view of the above, the invention provides a differential pressure type multi-element vector hydrophone array, which can solve the technical problems. The pressure difference type multi-element vector hydrophone array comprises a plurality of vibrating elements, an integral array mounting frame, an oil-filled outer tube and watertight cables; The vibration elements are linearly arranged and are arranged on the whole array mounting frame at intervals, and the outside of the whole array mounting frame provided with the vibration elements is wrapped with an oil-filled outer tube; One end of the watertight cable is used for being connected with the back-end equipment, and the other end of the watertight cable is arranged on the whole array installation frame and is electrically connected with each vibrating element in the whole array installation frame; The vibrating element comprises six piezoelectric ceramic vibrators, a base, a differential front-amplifying plate and a vibrating element mounting frame, wherein the base is of a regular hexahedral structure, and concave bowl-shaped structures are arranged on six surfaces of the base and are used for mounting the piezoelectric ceramic vibrators; The differential front-end plate is electrically connected with each piezoelectric ceramic vibrator and used for processing the front end of the differential pressure vector signal; The vibrating element installation frame is used for installing the vibrating element on the whole array installation frame. As a preferred mode of the present invention, the whole array mounting frame comprises end supporting plates at two ends and a plurality of supporting rods arranged between the two end supporting plates; The adjacent vibrating elements are connected through supporting rods, the vibrating elements at two ends are connected with end supporting plates at the corresponding ends through the supporting rods, and the plurality of vibrating elements are linearly arranged on the whole array mounting frame; The oil-filled outer tube is arranged between the end supporting plates at the two ends, wraps the vibrating element and the supporting rods between the end supporting plates at the two ends, and forms a structure with two ends sealed and filled with oil all around. As a preferable mode of the invention, hole sites for installing hanging rings are arranged on end supporting plates at two ends of the whole array installation frame. In a preferred embodiment of the present invention, the differential front-plate is mounted on a Yu Zhenyuan mounting frame, so as to cover the electroceramic vibrator silently. As a preferable mode of the invention, the vibrating element installation frame comprises nylon discs arranged at the left side and the right side of the vibrating element and a plurality of metal connecting rods arranged between the nylon discs at the two sides; the vibration element is also connected with the nylon disc through a metal connecting rod; The nylon disc is connected with the supporting rods in the whole array installation frame. As a preferable mode of the invention, the connecti