Deep-sea motor and hydrophone integrated device

Abstract

The invention belongs to the technical field of motors, and particularly relates to a deep sea motor and hydrophone integrated device. The integrated device comprises an integrated assembly. The integrated assembly comprises a piezoelectric ring, an excitation ring, a rotor, a transmitting module and a receiving module. The piezoelectric ring is connected with the excitation ring, the rotor is connected with the excitation ring in a sleeved mode, the excitation ring is provided with a plurality of vibration blades distributed at intervals in the circumferential direction of the excitation ring, all the vibration blades make contact with the rotor, the transmitting module and the receiving module are electrically connected with the piezoelectric ring, and the integrated assembly has a driving state and an underwater sound receiving state. When the integrated assembly is in a driving state, the transmitting module can apply voltage to the piezoelectric ring so as to drive the rotor to rotate; when the integrated assembly is in an underwater sound receiving state, the receiving module can obtain an electric signal generated by the piezoelectric ring due to the direct piezoelectric effect so as to receive a sound signal. The integrated device not only can drive the target component to rotate, but also can receive sound signals in water, is diversified in function and can be applied to many scenes.

Description

Technical Field

[0001] The present application belongs to the field of motor technology, and specifically relates to a deep-sea motor and hydrophone integrated device. Background Art

[0002] Due to the needs of marine resource exploration and national defense construction, underwater propulsion systems have been greatly developed. Propeller vector underwater propulsion systems are highly practical, reliable and convenient, with mature technology and easy operation, and are the main research object of underwater propulsion systems.

[0003] Currently, most underwater propulsion systems are driven by ultrasonic motors, which use the inverse piezoelectric effect of piezoelectric materials to excite the elastic excitation ring to vibrate slightly, and convert the vibration into macroscopic motion through friction. However, the current ultrasonic motors have a single function and are applicable to a limited number of scenarios. Summary of the invention

[0004] The purpose of this application is to provide an integrated deep-sea motor and hydrophone device that can solve the problem that the current ultrasonic motor has a single function and few applicable scenarios.

[0005] In order to solve the above technical problems, this application is implemented as follows: The present application provides a deep-sea motor and hydrophone integrated device, including an integrated component, the integrated component including a piezoelectric ring, an excitation ring, a rotor, a transmitting module and a receiving module; The piezoelectric ring is connected to the excitation ring, the rotor is sleeved with the excitation ring, a plurality of vibration blades are arranged on the excitation ring and are spaced apart along its circumference, each vibration blade is in contact with the rotor, the transmitting module and the receiving module are electrically connected to the piezoelectric ring respectively, and the integrated component has a driving state and an underwater acoustic receiving state; When the integrated component is in a driving state, the transmitting module can apply voltage to the piezoelectric ring to drive the rotor to rotate; when the integrated component is in an underwater acoustic receiving state, the receiving module can obtain the electrical signal generated by the positive piezoelectric effect of the piezoelectric ring to receive the acoustic signal.

[0006] The beneficial technical effects of this application are as follows: After the transmitting module sends a signal to apply voltage to the piezoelectric ring, the piezoelectric ring will produce an inverse piezoelectric effect, thereby generating vibrations in the circumferential direction. The excitation ring is connected to the piezoelectric ring, so the vibrations in the circumferential direction will be transmitted to the excitation ring and the vibration blades, thereby driving the rotor connected to the vibration blades to rotate, thereby driving the target component to rotate. At this time, the integrated assembly is in a driving state.

[0007] When the sound waves in the water are transmitted to the piezoelectric ring, the piezoelectric ring will produce a positive piezoelectric effect, that is, the piezoelectric ring will generate an electrical signal under the action of the sound wave, and the electrical signal will be received by the receiving module, thereby receiving and processing the sound signal in the water. At this time, the integrated component is in an underwater sound receiving state. It can be seen that the deep-sea motor and hydrophone integrated device of the present application can not only drive the target component to rotate, but also receive the sound signal in the water. It has diversified functions and can be applied to many scenarios. In addition, after the deep-sea motor and hydrophone integrated device of the present application can realize the hydrophone and driving functions, the integrated device of the present application can be used to replace the motor and hydrophone of the underwater propulsion system, which can simplify the structure of the underwater propulsion system and reduce the volume of the underwater propulsion system. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a schematic diagram of the structure of the deep-sea motor and hydrophone integrated device disclosed in the embodiment of the present application; Figure 2 Schematic diagram of the explosion of the deep-sea motor and hydrophone integrated device disclosed in the embodiment of the present application Figure 1 ; Figure 3 Schematic diagram of the explosion of the deep-sea motor and hydrophone integrated device disclosed in the embodiment of the present application Figure 2 ; Figure 4 A cross-sectional view of a deep-sea motor and hydrophone integrated device disclosed in an embodiment of the present application; Figure 5 A schematic diagram of the connection between the piezoelectric ring, the transceiver combined module, the transmitting module and the receiving module disclosed in the embodiment of the present application; Figure 6 This is a sensitivity curve diagram obtained when the deep-sea motor and hydrophone integrated device disclosed in the embodiment of the present application adopts excitation rings of different thicknesses.

[0009] Description of reference numerals: 100, integrated component; 101, accommodating cavity; 110, piezoelectric ring; 120, excitation ring; 121, vibrating blade; 130, rotor; 131, limiting edge; 140, transmitting module; 150, receiving module; 160, transmitting and receiving combined module; 170, limiting structure; 171, first fixing ring; 172, second fixing ring; 200, shock absorbing structure; 300, metal shell; 400, plastic shell. DETAILED DESCRIPTION

[0010] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0011] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0012] The deep-sea motor and hydrophone integrated device provided in the embodiment of the present application will be described in detail below through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0013] like Figures 1 to 6 As shown, the embodiment of the present application discloses a deep-sea motor and hydrophone integrated device, including an integrated component 100, the integrated component 100 includes a piezoelectric ring 110, an excitation ring 120, a rotor 130, a transmitting module 140 and a receiving module 150. Exemplarily, the piezoelectric ring 110 is an annular structure, which can be made of a piezoelectric material, and the piezoelectric material here can be a piezoelectric ceramic.

[0014] The piezoelectric ring 110 is connected to the excitation ring 120, so that after the piezoelectric ring 110 is energized to generate vibration, the vibration can be transmitted to the excitation ring 120, the rotor 130 is sleeved with the excitation ring 120, and the excitation ring 120 is provided with a plurality of vibration blades 121 distributed along its own circumferential direction, and each vibration blade 121 is in contact with the rotor 130, the transmitting module 140 and the receiving module 150 are electrically connected to the piezoelectric ring 110 respectively, and the integrated component 100 has a driving state and an underwater acoustic receiving state. Exemplarily, the excitation ring 120 here is an annular structural member, and the excitation ring 120 and the vibration blades 121 can be elastic, so as to be able to transmit the vibration generated by the piezoelectric ring 110 after the power is turned on; the excitation ring 120 here can be insulated from the piezoelectric ring 110.

[0015] The specific working process of the present application is as follows: after the transmitting module 140 sends a signal to apply voltage to the piezoelectric ring 110, the piezoelectric ring 110 will produce an inverse piezoelectric effect, thereby generating vibrations in a circumferential direction, and the excitation ring 120 is connected to the piezoelectric ring 110, so the vibrations in the circumferential direction will be transmitted to the excitation ring 120 and the vibration blade 121, thereby driving the rotor 130 connected to the vibration blade 121 to rotate, thereby driving the target component to rotate, and at this time, the integrated component 100 is in a driving state.

[0016] When the sound waves in the water are transmitted to the piezoelectric ring 110, the piezoelectric ring 110 will produce a positive piezoelectric effect, that is, the piezoelectric ring 110 will generate an electrical signal under the action of the sound waves, and the electrical signal will be received by the receiving module 150, thereby receiving and processing the sound signal in the water. At this time, the integrated component 100 is in an underwater sound receiving state. It can be seen that the deep-sea motor and hydrophone integrated device of the present application can not only drive the target component to rotate, but also receive the sound signal in the water. It has diversified functions and can be applied to many scenarios. In addition, after the deep-sea motor and hydrophone integrated device of the present application can realize the hydrophone and driving functions, the integrated device of the present application can be used to replace the motor and hydrophone of the underwater propulsion system, which can simplify the structure of the underwater propulsion system and reduce the volume of the underwater propulsion system.

[0017] When the integrated component 100 is in a driving state, the transmitting module 140 can apply voltage to the piezoelectric ring 110 to drive the rotor 130 to rotate; when the integrated component 100 is in an underwater acoustic receiving state, the receiving module 150 can obtain the electrical signal generated by the positive piezoelectric effect of the piezoelectric ring 110 to receive the acoustic signal.

[0018] In an optional embodiment, the rotor 130 is sleeved within the excitation ring 120, and the rotor 130 is arranged corresponding to the cavity within the piezoelectric ring 110. That is, the rotor 130 can be arranged opposite to the cavity within the piezoelectric ring 110, or can be passed through the cavity within the piezoelectric ring 110.

[0019] If the rotor 130 is sleeved outside the excitation ring 120 and the piezoelectric ring 110, since the rotor 130 needs to contact the vibration blade 121, the rotor 130 and the piezoelectric ring 110 are separated, which will form a chamber for containing water between the rotor 130 and the piezoelectric ring 110. Therefore, when the integrated component 100 is in the water sound receiving state, the transmission path of the sound wave in the water is: water-rotor 130-water in the chamber-piezoelectric ring 110, and the impedance difference between different media is large. The greater the impedance difference, the more the sound wave is reflected by the medium, and the less the sound wave is transmitted through the medium. In the above case, the sound wave undergoes multiple impedance conversions, so the sound wave acting on the piezoelectric ring 110 is small, which obviously reduces the accuracy of the integrated device for sound analysis.

[0020] In contrast, in this embodiment, the rotor 130 is sleeved inside the excitation ring 120, and the rotor 130 is arranged corresponding to the cavity inside the piezoelectric ring 110. At this time, the transmission path of the sound wave in the water is: water-piezoelectric ring 110. Compared with the above situation, the impedance conversion times of the sound wave in the propagation path of this embodiment are fewer, the part of the sound wave that transmits through the medium is more, and more sound waves act on the piezoelectric ring 110, which can improve the accuracy of the integrated device in sound analysis.

[0021] And / or, in an optional embodiment, see Figure 5 The integrated component 100 also includes a transceiver module 160, which is electrically connected to the piezoelectric ring 110, the transmitting module 140 is electrically connected to the transmitting end of the transceiver module 160, and the receiving module 150 is electrically connected to the receiving end of the transceiver module 160.

[0022] The transceiver module 160 of the present embodiment is electrically connected to the transmitting module 140 and the receiving module 150, respectively. Thus, when the transmitting module 140 sends a signal to the piezoelectric ring 110 through the transceiver module 160, the receiving module 150 no longer receives the sound signal through the transceiver module 160; and when the receiving module 150 receives the sound signal through the transceiver module 160, the transmitting module 140 no longer sends a signal to the piezoelectric ring 110 through the transceiver module 160, which can simplify the control logic of the integrated device.

[0023] In order to enable the integrated device to receive acoustic signals in the water while driving the target component to rotate, in an optional embodiment, the number of integrated components 100 includes two, the two integrated components 100 are connected, and the deep-sea motor and the hydrophone integrated device have a first working state. When the deep-sea motor and the hydrophone integrated device are in the first working state, one of the two integrated components 100 is in a driving state, and the other is in an underwater sound receiving state.

[0024] In this embodiment, the integrated device includes two integrated components 100, and the two integrated components 100 are two independent sets of components. Therefore, when one of the two integrated components 100 is in a driving state to drive the target component to rotate, the other can be put into an underwater acoustic receiving state to receive the acoustic signal in the water. In this way, the integrated device can simultaneously drive the target component to rotate and receive the acoustic signal in the water, thereby being able to adapt to more application scenarios.

[0025] Of course, the integrated device may also have a second working state and a third working state. In the second working state, both integrated components 100 may be in a driving state; in the third working state, both integrated components 100 may be in an underwater sound receiving state.

[0026] In an optional embodiment, the two integrated components 100 are connected via a shock absorbing structure 200. For example, the shock absorbing structure 200 here can be a rubber pad, a shock absorbing airbag or other components.

[0027] In this embodiment, when the integrated device is in the first working state, one of the integrated components 100 is in a driving state and the other is in an underwater sound receiving state. The rotor 130 of the integrated component 100 in the driving state will continuously rotate, and the rotor 130 will generate vibrations during the rotation. In order to prevent the vibration from being transmitted to the piezoelectric ring 110 of the integrated component 100 in the underwater sound receiving state, thereby causing the sound signal received by the receiving module 150 to be inconsistent with the sound wave signal in the water; therefore, in this embodiment, a shock absorbing structure 200 is arranged between the two integrated components 100. The shock absorbing structure 200 can absorb the vibrations generated by the rotor 130 during the rotation process to solve the problem that the sound signal received by the receiving module 150 is inconsistent with the sound wave signal in the water.

[0028] In an optional embodiment, the piezoelectric rings 110 of the two integrated components 100 are coaxial or parallel, the shock absorbing structure 200 is sandwiched between the rotors 130 of the two integrated components 100 , and each rotor 130 is limitedly matched with the shock absorbing structure 200 .

[0029] In this embodiment, the shock absorbing structure 200 can limit the rotors 130 of the two integrated components 100, which can prevent the rotors 130 from jumping in the direction close to the shock absorbing structure 200; and because the shock absorbing structure 200 has a certain deformability, when the rotor 130 is subjected to a large force extending in the direction close to the shock absorbing structure 200, the rotor 130 can abut against the shock absorbing structure 200 and force the shock absorbing structure 200 to deform, thereby absorbing the force, preventing the occurrence of hard abutment between the two adjacent rotors 130, and further preventing the rotors 130 from being damaged. Of course, the axes of the piezoelectric rings 110 of the two integrated components 100 can also be perpendicular to each other, and this application is not limited to this.

[0030] In an alternative embodiment, see Figure 4 The integrated component 100 also includes a limiting structure 170, which is connected to the corresponding piezoelectric ring 110. Each limiting structure 170 cooperates with the shock absorbing structure 200 to form a receiving cavity 101. A part of the rotor 130 is rotatably disposed in the corresponding receiving cavity 101, and the rotor 130 and the limiting structure 170 are limitedly matched in the direction extending from the shock absorbing structure 200 to the corresponding limiting structure 170.

[0031] In this embodiment, the rotor 130 and the limiting structure 170 cooperate to limit the position in the direction from the rotor 130 to away from the corresponding shock absorbing structure 200, which can ensure that the part of the rotor 130 located in the accommodating cavity 101 is always located in the accommodating cavity 101, preventing the rotor 130 from jumping in the direction away from the shock absorbing structure 200.

[0032] Optionally, the shock absorbing structure 200 may include a first fixing ring 171 and a second fixing ring 172, which are stacked in sequence on the end face of the corresponding piezoelectric ring 110 facing the adjacent piezoelectric ring 110, and the inner hole diameter of the first fixing ring 171 is smaller than the inner hole diameter of the second fixing ring 172 to form a step structure between the first fixing ring 171 and the second fixing ring 172, and the outer periphery of the rotor 130 radially protrudes outward to form a limit edge 131, and the limit edge 131 and the step structure of the first fixing ring 171 are in the upper limit fit in the direction extending from the shock absorbing structure 200 to the corresponding limit structure 170.

[0033] In an optional embodiment, the deep-sea motor and hydrophone integrated device further includes a metal shell 300, which is sleeved on the outside of the piezoelectric ring 110, and the metal shell 300 is closely connected to the piezoelectric ring 110. Exemplarily, the metal shell 300 here is an annular structure.

[0034] In this embodiment, the metal shell 300 is sleeved on the outside of the piezoelectric ring 110, so as to provide physical protection for the piezoelectric ring 110, and the metal shell 300 can restrict the radial deformation of the piezoelectric ring 110 to prevent the piezoelectric ring 110 from being damaged due to excessive radial deformation.

[0035] In an optional embodiment, the excitation ring 120 and the piezoelectric ring 110 are sequentially distributed in the axial direction of the piezoelectric ring 110 , the excitation ring 120 is sleeved with the metal shell 300 , and the excitation ring 120 and the metal shell 300 are closely connected.

[0036] In this embodiment, the metal shell 300 is sleeved with the piezoelectric ring 110, and the metal shell 300 is made of metal material, such as aluminum, and the metal has good ductility, so the metal shell 300 can amplify the vibration of the piezoelectric ring 110, and connecting the excitation ring 120 with the metal shell 300 can amplify the vibration of the piezoelectric ring 110 transmitted to the excitation ring 120 and the vibration blade 121, thereby improving the effect of driving the rotor 130 to rotate. Of course, the excitation ring 120 can also be directly sleeved inside the piezoelectric ring 110, and this application is not limited to this.

[0037] In an optional embodiment, the rotor 130 is inserted into the piezoelectric ring 110, the excitation ring 120 is sleeved in the metal shell 300, and the thickness of the excitation ring 120 is less than that of the piezoelectric ring 110. In this embodiment, the thickness of the excitation ring 120 is less than that of the piezoelectric ring 110, which not only improves the vibration performance of the excitation ring 120, but also improves the operating frequency and response speed of the integrated component 100 in the driving state. In addition, please refer to Figure 6 , the vertical axis represents sensitivity, and the horizontal axis represents the operating frequency when the integrated component 100 is in the underwater sound receiving state. Figure 6 The sensitivity curves in the figure are curves measured when the excitation ring 120 is set to different thicknesses. The thickness of the piezoelectric ring 110 in this test is 3.5 mm. Figure 6 It can be seen from the curve graph that when the thickness of the excitation ring 120 is smaller than the thickness of the piezoelectric ring 110, when the integrated component 100 is in the underwater acoustic receiving state, the sensitivity curve of the integrated device is smoother and the sensitivity value is larger, which helps to reduce errors in measurement and improve the accuracy and reliability of the signal.

[0038] In an optional embodiment, the outer circumference of the excitation ring 120 is convex or flush with the outer circumference of the piezoelectric ring 110, which can make the diameter of the excitation ring 120 larger, thereby better transmitting vibration to enhance the effect of driving the rotor 130 to rotate; and such a setting can also make the sensitivity curve of the integrated device smoother, so as to further reduce errors in measurement and further improve the accuracy and reliability of the signal.

[0039] In an optional embodiment, a plastic shell 400 is further provided on the outside of the metal shell 300. In this case, the transmission path of the sound waves in the water is: water—plastic shell 400—piezoelectric ring 110, and the impedance difference between water and the plastic shell 400 is small, and the impedance difference between the plastic shell 400 and the piezoelectric ring 110 is also small, which can reduce the number of sound waves reflected by the medium, so that more sound waves act on the piezoelectric ring 110, so as to improve the accuracy of detecting sound waves.

[0040] The above embodiments of the present application focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here. The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the present application, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present application and the claims, all of which are within the protection of the present application.

Claims

1. A deep-sea motor and hydrophone integrated device, characterized in that: The integrated component (100) comprises a piezoelectric ring (110), an excitation ring (120), a rotor (130), a transmitting module (140) and a receiving module (150); The piezoelectric ring (110) is connected to the excitation ring (120), the rotor (130) is sleeved with the excitation ring (120), the excitation ring (120) is provided with a plurality of vibration blades (121) distributed along its circumference at intervals, each of the vibration blades (121) is in contact with the rotor (130), the transmitting module (140) and the receiving module (150) are respectively electrically connected to the piezoelectric ring (110), and the integrated component (100) has a driving state and an underwater sound receiving state; When the integrated component (100) is in the driving state, the transmitting module (140) can apply voltage to the piezoelectric ring (110) to drive the rotor (130) to rotate; when the integrated component (100) is in the underwater acoustic receiving state, the receiving module (150) can obtain the electrical signal generated by the positive piezoelectric effect of the piezoelectric ring (110) to receive the acoustic signal.

2. The deep-sea motor and hydrophone integrated device according to claim 1 is characterized in that: The rotor (130) is sleeved inside the excitation ring (120), and the rotor (130) is arranged corresponding to the cavity inside the piezoelectric ring (110); and / or, The integrated component (100) further comprises a transceiver combined module (160), wherein the transceiver combined module (160) is electrically connected to the piezoelectric ring (110), the transmitting module (140) is electrically connected to the transmitting end of the transceiver combined module (160), and the receiving module (150) is electrically connected to the receiving end of the transceiver combined module (160).

3. The deep-sea motor and hydrophone integrated device according to claim 1 is characterized in that: The number of the integrated components (100) includes two, the two integrated components (100) are connected, and the deep-sea motor and the hydrophone integrated device are in a first working state; When the deep-sea motor and hydrophone integrated device is in the first working state, one of the two integrated components (100) is in the driving state, and the other is in the hydrophone receiving state.

4. The deep-sea motor and hydrophone integrated device according to claim 3 is characterized in that: The two integrated components (100) are connected via a shock absorbing structure (200).

5. The deep-sea motor and hydrophone integrated device according to claim 4 is characterized in that: The piezoelectric rings (110) of the two integrated components (100) are coaxial or parallel, the shock absorbing structure (200) is sandwiched between the rotors (130) of the two integrated components (100), and each of the rotors (130) is positionally matched with the shock absorbing structure (200).

6. The deep-sea motor and hydrophone integrated device according to claim 5 is characterized in that: The integrated component (100) further comprises a limiting structure (170), wherein the limiting structure (170) is connected to the corresponding piezoelectric ring (110), and each limiting structure (170) cooperates with the damping structure (200) to form a receiving cavity (101), a portion of the rotor (130) is rotatably disposed in the corresponding receiving cavity (101), and the rotor (130) and the limiting structure (170) cooperate in a limiting manner in a direction extending from the damping structure (200) to the corresponding limiting structure (170).

7. The deep-sea motor and hydrophone integrated device according to any one of claims 1 to 6, characterized in that: The deep-sea motor and hydrophone integrated device further comprises a metal shell (300), wherein the metal shell (300) is sleeved on the outside of the piezoelectric ring (110), and the metal shell (300) and the piezoelectric ring (110) are closely connected.

8. The deep-sea motor and hydrophone integrated device according to claim 7 is characterized in that: The excitation ring (120) and the piezoelectric ring (110) are distributed in sequence in the axial direction of the piezoelectric ring (110), the excitation ring (120) is sleeved with the metal shell (300), and the excitation ring (120) and the metal shell (300) are fitted and connected.

9. The deep-sea motor and hydrophone integrated device according to claim 8, characterized in that: The rotor (130) is inserted into the piezoelectric ring (110), the excitation ring (120) is sleeved into the metal shell (300), and the thickness of the excitation ring (120) is smaller than the thickness of the piezoelectric ring (110).

10. The deep-sea motor and hydrophone integrated device according to claim 9, characterized in that: The outer circumferential surface of the excitation ring (120) is convex to or flush with the outer circumferential surface of the piezoelectric ring (110).

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