Round-tube-shaped piezoelectric underwater acoustic transducer for deep sea detection

Abstract

The invention discloses a circular tube-shaped piezoelectric underwater acoustic transducer for deep sea detection. The circular-tube-shaped piezoelectric underwater acoustic transducer for deep sea detection comprises a front shell, a front water passing groove is formed in the front shell, a connecting flange is fixedly connected to the rear side end of the front shell, a front circular tube is installed at the rear end of the front shell through the connecting flange, and a side water groove is formed in the surface of the front circular tube. A first water flowing groove is formed in the front round pipe, a connecting flange is fixedly connected to the rear side end of the front round pipe, a rear round pipe is installed at the rear end of the front round pipe through the connecting flange, the structure of the rear round pipe is the same as that of the front round pipe, and a rear shell is installed at the rear end of the rear round pipe through the connecting flange. According to the device, equipment can be quickly assembled and adjusted according to different underwater environments, multiple groups of circular tube transducers are mounted, and the signal receiving and transmitting effects are improved by arranging an internal water flow groove.

Description

Technical Field

[0001] The present invention belongs to the technical field of transducers, and specifically relates to a tubular piezoelectric underwater acoustic transducer for deep-sea exploration. Background Art

[0002] An ultrasonic transducer is a device composed of a housing, piezoelectric ceramics, and electrode plates. It is a transducer device that converts the incoming electrical power into mechanical power and then transmits it. Therefore, ultrasonic transducers are often used in related fields such as industry, agriculture, transportation, medical treatment, and military, facilitating human use; the structural design of the tubular piezoelectric underwater acoustic transducer is to provide efficient underwater acoustic signal transmission and reception in the deep-sea environment, while ensuring stability and durability in high-pressure and harsh environments.

[0003] Currently, the piezoelectric underwater acoustic transducers on the market are affected by factors such as the device volume and contact area during deep-sea exploration, resulting in poor efficiency in signal transduction, thereby affecting the efficiency of deep-sea exploration. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem that a tubular piezoelectric underwater acoustic transducer for deep-sea exploration is affected by factors such as the device volume and contact area during deep-sea exploration, resulting in poor efficiency in signal transduction, thereby affecting the efficiency of deep-sea exploration, and to provide a tubular piezoelectric underwater acoustic transducer for deep-sea exploration.

[0005] The technical solution adopted by the present invention is as follows: A tubular piezoelectric underwater acoustic transducer for deep-sea exploration, including a front housing, a front water channel is provided inside the front housing, a connection flange is fixedly connected to the rear end of the front housing, a front circular tube is installed at the rear end of the front housing through the connection flange, side water channels are provided on the surface of the front circular tube, a first water channel is provided inside the front circular tube, a connection flange is fixedly connected to the rear end of the front circular tube, a rear circular tube is installed at the rear end of the front circular tube through the connection flange, the structure of the rear circular tube is the same as that of the front circular tube, a rear housing is installed at the rear end of the rear circular tube through the connection flange, a front mounting ring is fixedly connected to the front end surface of the front circular tube, a front slot is provided inside the front mounting ring, a rear mounting groove is provided on the rear end surface of the front circular tube, a rear mounting ring is fixedly connected inside the rear mounting groove, a rear insertion rod is fixedly connected to the top of the rear mounting ring, and sound-absorbing materials are filled inside the front circular tube and on the side of the first water channel.

[0006] In a preferred embodiment, mounting holes are provided inside the connection flange, and bolts are installed inside the mounting holes.

[0007] In a preferred embodiment, a sealing ring is installed on the surface of the connection flange.

[0008] In a preferred embodiment, a front guiding end is fixedly connected to the front end surface of the front circular tube and located at the side end of the front mounting ring. A guiding slot is provided at the rear end of the front circular tube, and a guiding seat is fixedly installed inside the front circular tube.

[0009] In a preferred embodiment, a front transmission cable is installed inside the front housing. A guiding slot is provided at the rear end of the front housing, and a rear mounting slot is provided at the rear end of the front housing.

[0010] In a preferred embodiment, a second water flow channel is provided inside the rear circular tube.

[0011] In a preferred embodiment, a rear transmission cable is installed inside the rear housing.

[0012] In a preferred embodiment, high-temperature conductive adhesive is filled on the surface of the sound-absorbing material inside the front circular tube, and a piezoelectric ceramic sheet is installed on the surface of the high-temperature conductive adhesive.

[0013] In a preferred embodiment, a signal cable is fixedly connected to the inner side end of the front guiding end inside the front circular tube. The rear end of the signal cable is fixedly connected to a guiding seat, and a retaining ring is fixedly connected to the side end of the signal cable.

[0014] In a preferred embodiment, a guiding column is fixedly connected to the top end of the piezoelectric ceramic sheet, and a signal cable is installed at the upper end of the guiding column.

[0015] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are as follows:

[0016] 1. In the present invention, water flow channels are provided on the inner and outer sides of the transducer, which can increase the contact area with water flow. Front water flow channels for underwater water flow are provided inside the front housing and the rear housing. The structures of the front housing and the rear housing are the same. First water flow channels and second water flow channels for underwater water flow are provided inside the front circular tube and the rear circular tube. The structures of the front circular tube and the rear circular tube are the same, and the side water channels provided on their side end surfaces can effectively receive underwater sound signals. When the device is placed underwater for work, water flow can flow into the inside of the front circular tube and the rear circular tube through the front water flow channels, the first water flow channels and the second water flow channels. The water flow on the outside can increase the contact area through the side water channels on the surfaces of the front circular tube and the rear circular tube. During energy conversion, the sound-absorbing material provided on the side wall of the water flow channel can be used to enhance the energy conversion detection effect.

[0017] 2. In the present invention, multiple circular tube-shaped heat exchangers can be assembled and quickly installed with signal transmitting and receiving devices, and the device size can be adjusted according to different underwater environments. The front housing and the front circular tube, the front circular tube and the rear circular tube, and the rear circular tube and the rear housing are connected through connecting flanges. A waterproof sealing ring is provided on the surface of the connecting flange. A plugging slot hole matching the front mounting ring at the front end of the front circular tube is opened at the rear end of the front housing, and a plugging slot hole matching the front end of the rear circular tube is opened at the rear end of the front circular tube. Before installation, multiple front circular tubes and rear circular tubes can be connected and assembled to adjust the size of the device according to the underwater environment. When installing the front circular tube and the rear circular tube, the front mounting ring at the front end of the rear circular tube can be aligned with the rear mounting slot opened at the rear end of the front circular tube first, and the front slot hole in the front mounting ring can be aligned with the rear mounting ring at the rear mounting slot. Then it is plugged into the inside of the front slot, and at the same time, the front guiding end at the front end of the rear circular tube is plugged into the rear end of the front circular tube and the guiding seat. Then the connecting flange is used to install and fix the front circular tube and the rear circular tube.

[0018] 3. In the present invention, a waterproof and sealed structure is provided. The sealing ring is located on the surface of the connecting flange and outside the plugging part of the device assembly parts, which can effectively waterproof and seal the plugging installation part of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of a circular tube-shaped piezoelectric underwater acoustic transducer for deep-sea detection according to the present invention;

[0020] Figure 2 is a structural diagram of the circular tube-shaped transducer in the present invention;

[0021] Figure 3 is a schematic structural diagram of the front circular tube in the present invention;

[0022] Figure 4 is a plan view structural diagram of the circular tube-shaped transducer in the present invention;

[0023] Figure 5 In the present invention Figure 4 is an enlarged view of part A;

[0024] Figure 6 is a plan view of the internal structure of the transducer in the present invention.

[0025] Markings in the figure: 1 - front housing, 2 - front circular tube, 3 - rear circular tube, 4 - rear housing, 5 - connecting flange, 6 - mounting hole, 7 - front water channel, 8 - front transmission cable, 9 - rear transmission cable, 10 - sealing ring, 11 - front mounting ring, 12 - rear mounting ring, 13 - front slot, 14 - first water channel, 15 - front conducting end, 16 - side water channel, 17 - rear insertion rod, 18 - rear mounting groove, 19 - conducting groove, 20 - conducting seat, 21 - second water channel, 22 - bolt, 23 - retaining ring, 24 - sound-absorbing material, 25 - high-temperature conductive adhesive, 26 - piezoelectric ceramic sheet, 27 - conducting column, 28 - signal cable. Specific implementation manner

[0026] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0027] Refer to Figures 1-6, including a front housing 1. There is a front water channel 7 opened inside the front housing 1. A connecting flange 5 is fixedly connected to the rear side end of the front housing 1. A front circular tube 2 is installed at the rear end of the front housing 1 through the connecting flange 5. There is a side water channel 16 opened on the surface of the front circular tube 2. There is a first water channel 14 opened inside the front circular tube 2. A connecting flange 5 is fixedly connected to the rear side end of the front circular tube 2. A rear circular tube 3 is installed at the rear end of the front circular tube 2 through the connecting flange 5. The structure of the rear circular tube 3 is the same as that of the front circular tube 2. A rear housing 4 is installed at the rear end of the rear circular tube 3 through the connecting flange 5. A front mounting ring 11 is fixedly connected to the front surface of the front circular tube 2. There is a front slot 13 opened inside the front mounting ring 11. A rear mounting groove 18 is opened on the rear surface of the front circular tube 2. A rear mounting ring 12 is fixedly connected inside the rear mounting groove 18. A rear insertion rod 17 is fixedly connected to the top of the rear mounting ring 12. Sound-absorbing material 24 is filled inside the front circular tube 2 and at the side end of the first water channel 14. There is a front water channel 7 for underwater water flow opened inside the front housing 1 and the rear housing 4. The structures of the front housing 1 and the rear housing 4 are the same. There is a first water channel 14 and a second water channel 21 for underwater water flow opened inside the front circular tube 2 and the rear circular tube 3. The structures of the front circular tube 2 and the rear circular tube 3 are the same. The side water channels 16 opened on their side surfaces can effectively receive underwater sound signals. The front housing 1 and the front circular tube 2, the front circular tube 2 and the rear circular tube 3, and the rear circular tube 3 and the rear housing 4 are connected through the connecting flange 5. A waterproof sealing ring 10 is provided on the surface of the connecting flange 5. A plugging slot hole matching the front mounting ring 11 at the front end of the front circular tube 2 is opened at the rear end of the front housing 1. A plugging slot hole matching the front end of the rear circular tube 3 is opened at the rear end of the front circular tube 2. Before installation, multiple front circular tubes 2 and rear circular tubes 3 can be connected and assembled to adjust the size of the device according to the underwater environment. When installing the front circular tube 2 and the rear circular tube 3, the front mounting ring 11 at the front end of the rear circular tube 3 can be aligned with the rear mounting groove 18 opened at the rear end of the front circular tube 2 first, and the front slot 13 inside the front mounting ring 11 can be aligned with the rear insertion rod 17 at the rear mounting ring 12 inside the rear mounting groove 18. The rear insertion rod 17 is inserted into the inside of the front slot 13. At the same time, the front guiding end 15 at the front end of the rear circular tube 3 is inserted into the rear guiding slot 19 and the guiding seat 20 at the rear end of the front circular tube 2.

[0028] Next, the front circular tube 2 and the rear circular tube 3 are installed and fixed using the connecting flange 5. The front leading end 15 and the leading socket 20 are used to connect the power line, facilitating the transmission of electrical signals to the front housing 1 or the rear housing 4. The rear end plug-in mounting structure of the front housing 1 is the same as that of the rear end of the front circular tube 2. When assembling the front housing 1 and the rear housing 4, the installation and plug-in method of the front circular tube 2 and the rear circular tube 3 can be used for assembly, and the connecting flange 5 is used for fixation. When the device is placed underwater for work, water flow can enter the interiors of the front circular tube 2 and the rear circular tube 3 through the front water channel 7, the first water channel 14, and the second water channel 21. The water flow on the outside can increase the contact area through the side water channels 16 on the surfaces of the front circular tube 2 and the rear circular tube 3. During energy conversion, the sound-absorbing material 24 provided on the side wall of the water flow channel can enhance the energy conversion detection effect.

[0029] Refer to Figure 4 and Figure 5 , an installation hole 6 is provided inside the connecting flange 5, and a bolt 22 is installed inside the installation hole 6. When assembling the device, the connecting flange 5 and the bolt 22 can be used for rapid assembly of multiple sections of the device, facilitating the adjustment of the device length according to different underwater environments.

[0030] Refer to Figure 2 and Figure 5 , a sealing ring 10 is installed on the surface of the connecting flange 5. The sealing ring 10 is located on the surface of the connecting flange 5 and outside the plug-in part of the device assembly parts, and can effectively waterproof and seal the plug-in installation part of the device.

[0031] Refer to Figures 1-4 , a front leading end 15 is fixedly connected to the side end of the front surface of the front circular tube 2 and located at the front mounting ring 11. A leading socket 19 is provided at the rear end of the front circular tube 2, and a leading socket 20 is fixedly installed inside the leading socket 19. When assembling the front circular tube 2 and the rear circular tube 3, the front leading end 15 needs to be aligned with the leading socket 19, so as to install the front leading end 15 and the leading socket 20 and connect the internal circuit.

[0032] Refer to Figure 1 and Figure 6 , a front transmission cable 8 is installed inside the front housing 1. A leading socket 19 is provided at the rear end of the front housing 1, and a rear mounting groove 18 is provided at the rear end of the front housing 1. The rear end plug-in structure of the front housing 1 is the same as that of the rear end of the front circular tube 2, and the rear end of the front housing 1 can be assembled with the front end of the front circular tube 2. The front transmission cable 8 installed inside the front housing 1 is used to connect the circuit. The outer end of the front transmission cable 8 is used to externally connect the device for transmitting electrical signals, and the inner end of the front transmission cable 8 is connected to the signal cable 28 inside the front circular tube 2 through the front leading end 15.

[0033] Refer to Figure 4, a second water channel 21 is provided inside the rear circular tube 3. The structure of the second water channel 21 is the same as that of the first water channel 14.

[0034] Refer to Figure 1 , a rear transmission cable 9 is installed inside the rear housing 4. The inner end of the rear transmission cable 9 is connected to the connection seat 20 of the rear circular tube 3, and the outer end of the rear transmission cable 9 is connected to a signal output device.

[0035] Refer to Figure 1 and Figure 6 , high-temperature conductive glue 25 is filled on the surface of the sound-absorbing material 24 inside the front circular tube 2, and a piezoelectric ceramic sheet 26 is installed on the surface of the high-temperature conductive glue 25. The high-temperature conductive glue 25 has strong bonding performance and bonds different materials, the sound-absorbing material 24 and the piezoelectric ceramic sheet 26 together, while maintaining its conductivity.

[0036] Refer to Figure 6 , a signal cable 28 is fixedly connected to the inner side end of the front connection end 15 inside the front circular tube 2. The rear end of the signal cable 28 is fixedly connected to a connection seat 20, and a retaining ring 23 is fixedly connected to the side end of the signal cable 28. When an external electrical signal is transmitted into the piezoelectric ceramic sheet 26 through the front transmission cable 8, the piezoelectric ceramic sheet 26 will deform, and then generate mechanical wave sound waves, which are emitted into the water through the circular tube-shaped housing. The echo signal reflected by the underwater target is transmitted through the housing to the sound-absorbing material 24 and the piezoelectric ceramic sheet 26. The deformation of the piezoelectric ceramic sheet 26 is converted into an electrical signal again and sent to the rear transmission cable 9, and the distance, speed and other information of the underwater target are analyzed after processing.

[0037] Refer to Figure 6 , a connection post 27 is fixedly connected to the top end of the piezoelectric ceramic sheet 26, and a signal cable 28 is installed at the upper end of the connection post 27. The piezoelectric ceramic sheet 26 is connected to the signal cable 28 for transmitting signals through the connection post 27, and is used to receive or transmit signals.

[0038] Working principle: Before installation, multiple front circular tubes 2 and rear circular tubes 3 can be connected and assembled to adjust the size of the device according to the underwater environment. When installing the front circular tube 2 and the rear circular tube 3, the front end of the rear circular tube 3 can be aligned with the rear installation slot 18 opened at the rear end of the front circular tube 2 at the front installation ring 11, and the front slot 13 in the front installation ring 11 can be aligned with the rear insertion rod 17 at the rear installation ring 12 in the rear installation slot 18. The rear insertion rod 17 is inserted into the interior of the front slot 13. At the same time, the front guiding end 15 at the front end of the rear circular tube 3 is inserted into the rear guiding slot 19 and the guiding seat 20 at the rear end of the front circular tube 2. Then, the front circular tube 2 and the rear circular tube 3 are installed and fixed using the connecting flange 5. The front guiding end 15 and the guiding seat 20 are used to connect the power line, facilitating the transmission of electrical signals to the front housing 1 or the rear housing 4. The rear end insertion and installation structure of the front housing 1 is the same as that of the rear end of the front circular tube 2. When assembling the front housing 1 and the rear housing 4, the installation and insertion method of the front circular tube 2 and the rear circular tube 3 can be used for assembly, and the connecting flange 5 is used for fixation.

[0039] When the device is placed underwater for work, water flow can enter the interiors of the front circular tube 2 and the rear circular tube 3 through the front water channel 7, the first water channel 14, and the second water channel 21. The water flow on the outside can increase the contact area through the side water channels 16 on the surfaces of the front circular tube 2 and the rear circular tube 3. During energy conversion, the sound absorption material 24 provided on the side wall of the water flow channel can be used to enhance the energy conversion and detection effect. When assembling the device, the connecting flange 5 and the bolts 22 can be used to quickly assemble multiple sections of the device, facilitating the adjustment of the device length according to different underwater environments. The sealing ring 10 is located on the surface of the connecting flange 5 and outside the insertion joints of the device assembly parts, and can effectively waterproof and seal the insertion and installation parts of the device. When an external electrical signal is transmitted into the piezoelectric ceramic sheet 26 through the front transmission cable 8, the piezoelectric ceramic sheet 26 will deform, thereby generating mechanical wave sound waves, which are emitted into the water through the cylindrical outer shell. The echo signal reflected by the underwater target is transmitted through the outer shell to the sound absorption material 24 and the piezoelectric ceramic sheet 26. The deformation of the piezoelectric ceramic sheet 26 is again converted into an electrical signal, which is sent to the rear transmission cable 9. After processing, information such as the distance and speed of the underwater target is analyzed. This device can quickly assemble and adjust the device according to different underwater environments, install multiple groups of circular tube transducers, and enhance the effect of receiving and transmitting signals by setting internal water channels.

[0040] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A cylindrical piezoelectric hydroacoustic transducer for deep sea exploration, comprising a front housing (1), characterized in that: The front shell (1) is provided with a front water trough (7) inside, the rear side end of the front shell (1) is fixedly connected with a connecting flange (5), the rear end of the front shell (1) is mounted with a front circular tube (2) via the connecting flange (5), the surface of the front circular tube (2) is provided with a side water trough (16), the interior of the front circular tube (2) is provided with a first water trough (14), the rear side end of the front circular tube (2) is fixedly connected with a connecting flange (5), the rear end of the front circular tube (2) is mounted with a rear circular tube (3) via the connecting flange (5), and the structure of the rear circular tube (3) is the same as that of the front circular tube (2). The rear end of the rear circular tube (3) is mounted with a rear shell (4) via a connecting flange (5); the front end surface of the front circular tube (2) is fixedly connected with a front mounting ring (11); a front slot (13) is provided inside the front mounting ring (11); a rear end surface of the front circular tube (2) is provided with a rear mounting groove (18); a rear mounting ring (12) is fixedly connected inside the rear mounting groove (18); a rear insertion rod (17) is fixedly connected to the top end of the rear mounting ring (12); and a sound absorbing material (24) is filled inside the front circular tube (2) and at the side end of the first water channel (14).

2. A cylindrical piezoelectric hydroacoustic transducer for deep sea exploration as claimed in claim 1, characterized in that: A mounting hole (6) is provided inside the connecting flange (5), and a bolt (22) is installed inside the mounting hole (6).

3. A cylindrical piezoelectric hydroacoustic transducer for deep sea exploration as claimed in claim 1, characterized in that: A sealing ring (10) is installed on the surface of the connecting flange (5).

4. A cylindrical piezoelectric hydroacoustic transducer for deep sea exploration as claimed in claim 1, characterized in that: A front guide end (15) is fixedly connected to the front end surface of the front circular tube (2) and located at the side end of the front mounting ring (11), a guide groove (19) is provided at the rear end of the front circular tube (2), and a guide seat (20) is fixedly installed inside the guide groove (19).

5. The cylindrical piezoelectric hydroacoustic transducer for deep sea exploration according to claim 1, characterized in that: A front transmission cable (8) is installed inside the front shell (1), a guide groove (19) is provided at the rear end of the front shell (1), and a rear installation groove (18) is provided at the rear end of the front shell (1).

6. A cylindrical piezoelectric hydroacoustic transducer for deep sea exploration as claimed in claim 1, characterized in that: A second water channel (21) is provided inside the rear circular tube (3).

7. A cylindrical piezoelectric hydroacoustic transducer for deep sea exploration as claimed in claim 1, characterized in that: A rear transmission cable (9) is installed inside the rear housing (4).

8. The cylindrical piezoelectric underwater acoustic transducer for deep sea exploration according to claim 1, characterized in that: The interior of the front circular tube (2) and the surface of the sound absorbing material (24) are filled with high temperature conductive glue (25), and a piezoelectric ceramic sheet (26) is installed on the surface of the high temperature conductive glue (25).

9. A cylindrical piezoelectric hydroacoustic transducer for deep sea exploration as claimed in claim 1, characterized in that: A signal cable (28) is fixedly connected inside the front circular tube (2) and located at the inner side end of the front guide connection end (15); a guide connection seat (20) is fixedly connected to the rear end of the signal cable (28); and a retaining ring (23) is fixedly connected to the side end of the signal cable (28).

10. A cylindrical piezoelectric hydroacoustic transducer for deep sea exploration according to claim 9, characterized in that: The top end of the piezoelectric ceramic sheet (26) is fixedly connected to a conducting column (27), and a signal cable (28) is installed on the upper end of the conducting column (27).

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