CN109909141B

CN109909141B - Energy converter with adjustable radiant surface pressure

Info

Publication number: CN109909141B
Application number: CN201910231917.5A
Authority: CN
Inventors: 苏彬; 朱皓
Original assignee: Haiying Enterprise Group Co Ltd
Current assignee: Haiying Enterprise Group Co Ltd
Priority date: 2019-03-26
Filing date: 2019-03-26
Publication date: 2020-07-14
Anticipated expiration: 2039-03-26
Also published as: CN109909141A

Abstract

The invention discloses a transducer with an adjustable radiation surface pressure, and belongs to the technical field of transducers. The transducer with the adjustable radiation surface pressure comprises a transducer and a pressure adjusting device fixed inside the transducer. The pressure adjusting device is used for adjusting the pressure of the radiation surface of the energy converter and comprises a frame, a movable plate and a telescopic mechanism; wherein, the fly leaf level is located inside the frame, and telescopic machanism vertically places on the fly leaf to with the interior top contact of frame. A pressure adjusting device is formed by the telescopic mechanism and the movable plate, and a cavity of the device is connected with a liquid cavity of the transducer or the acoustic array by an oil guide pipe, so that the pressure of the surface of the radiation surface is maintained within a design range. The transducer or the acoustic array can carry out high-power emission on the water surface without external structural equipment; and the volume, the installation position and the pressure adjusting range can be changed according to the actual use condition, the method is simple, reliable, flexible and changeable, and the volume and the weight of the transducer or the acoustic array are greatly reduced.

Description

Energy converter with adjustable radiant surface pressure

Technical Field

The invention relates to the technical field of transducers, in particular to a transducer with an adjustable radiation surface pressure.

Background

When designing high power transmitting transducers and acoustic arrays, the acoustic limit, i.e. the acoustic power experienced by a unit area of the transducer surface, is usually considered. Since the acoustic field medium can collapse under strong power, forming cavities and bubbles, a phenomenon known as cavitation, which can cause very serious effects. First, additional power consumption is required because of the generation of bubbles, causing a decrease in electroacoustic efficiency; second, it forms a bubble layer around the transducer that absorbs sound energy as the radiated sound waves pass through. Bubbles are usually formed at the transducer surface and when the sustained acoustic power is high, the bubbles can cause severe erosion of the transducer due to bubble collapse.

In order to avoid the cavitation phenomenon, the cavitation threshold of the transducer or acoustic array working environment is generally required to be increased, and the most effective way to increase the cavitation threshold is to increase the pressure on the surface of the radiation surface. For ship-shell sonar, a flow guide sleeve is usually installed at the bow of a ship, and a transmitting acoustic array is installed inside a backflow sleeve; during actual work, an operator can fill water and pressurize the air guide sleeve. However, for a fixed sound source of an unmanned surface vehicle or shallow water operation, due to factors such as engineering implementation and environment, it is difficult to realize the lift of the cavitation threshold by the pressurization of the air guide sleeve.

Although the partial oil-filled transducer can solve the problem of cavitation threshold by means of pre-pressurization, the pressure relief can be caused by factors such as temperature and oil leakage, or the reliability of the transducer is influenced when the transducer shell cannot bear the pressure increased by temperature rise.

Disclosure of Invention

The invention aims to provide a transducer with adjustable radiation surface pressure, which solves the problem that the conventional transducer cannot maintain the radiation surface pressure.

In order to solve the above technical problem, the present invention provides a transducer with adjustable radiation surface pressure, comprising:

a transducer;

and the pressure regulating device is fixed inside the transducer.

Optionally, the pressure adjusting device includes:

a frame;

the movable plate is horizontally positioned in the frame;

and the telescopic mechanism is vertically arranged on the movable plate and is in contact with the inner top of the frame.

Optionally, a cavity is formed between the movable plate and the bottom of the frame and stores liquid.

Optionally, the pressure adjusting device further includes an oil conduit communicating the cavity and a liquid cavity in the transducer.

Optionally, the movable plate and the top of the frame are both provided with openings, so that the oil guide pipe can penetrate through the openings conveniently.

Optionally, the number of the telescopic mechanisms is 2.

Optionally, the telescopic mechanism is a spring.

Optionally, the housing of the transducer is metal.

The invention provides a radiation surface pressure adjustable transducer, which comprises a transducer and a pressure adjusting device fixed inside the transducer. The pressure adjusting device is used for adjusting the pressure of the radiation surface of the energy converter and comprises a frame, a movable plate and a telescopic mechanism; the movable plate is horizontally arranged inside the frame, and the telescopic mechanism is vertically arranged on the movable plate and is in contact with the inner top of the frame. The invention forms a pressure adjusting device by the telescopic mechanism and the movable plate, and connects the cavity of the device with the liquid cavity of the transducer or the acoustic array by the oil conduit, so that the pressure of the surface of the radiation surface is maintained in the design range. The transducer or the acoustic array can carry out high-power emission on the water surface without external structural equipment; and the volume, the installation position and the pressure adjusting range can be changed according to the actual use condition, the method is simple, reliable, flexible and changeable, and the volume and the weight of the transducer or the acoustic array are greatly reduced.

Drawings

FIG. 1 is a schematic diagram of a radiation surface pressure adjustable transducer provided by the present invention;

fig. 2 is a schematic structural diagram of a pressure regulating device provided by the present invention.

Detailed Description

The invention provides a radiation surface pressure adjustable transducer, which is further described in detail with reference to the accompanying drawings and specific embodiments. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.

Example one

The invention provides a transducer with adjustable radiation surface pressure, which is structurally shown in figure 1. The transducer with the adjustable radiation surface pressure comprises a transducer 1 and a pressure adjusting device 2 fixed inside the transducer 1, wherein a shell of the transducer 1 is made of metal, and the pressure adjusting device 2 is used for adjusting the radiation surface pressure of the transducer 1 and keeping the radiation surface pressure within a design range.

Specifically, as shown in fig. 2, the pressure adjusting device 2 includes a frame 21, a movable plate 22 and a telescopic mechanism 23; wherein the movable plate 22 is horizontally positioned inside the frame 21, and the telescopic mechanism 23 is vertically placed on the movable plate 22 and is in contact with the inner top of the frame 21. A cavity 24 is formed between the movable plate 22 and the bottom of the frame 21 and stores liquid. Further, the telescopic mechanisms 23 are springs, and the number of the telescopic mechanisms is 2.

With continued reference to fig. 2, the pressure regulating device 2 further includes an oil conduit 25 communicating the cavity 24 with the fluid chamber 11 of the transducer 1. Openings are formed at the top of the movable plate 22 and the top of the frame 21, so that the oil guide pipe 25 can pass through the openings.

Firstly, the liquid cavity 11 needs to be pre-pressurized, at the moment, the telescopic mechanism 23 is in a contraction state, and the elasticity and the internal pressure are balanced; along with the change of the temperature, the volume of the internal liquid changes, the movable plate 22 moves up and down, the telescopic mechanism 23 is always in a contraction state, the internal pressure and the external pressure are balanced, and the hydraulic pressure of the liquid cavity 11 is always maintained in a design range. In addition, because of the need of pressurization, the transducer or the acoustic array adopts a metal shell, compared with the traditional polyurethane or rubber watertight form, the transducer or the acoustic array is not easy to permeate water, the process is simple, and the reliability is greatly improved.

The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.

Claims

1. A radiating surface pressure adjustable transducer, comprising:

a transducer;

the pressure adjusting device is fixed inside the energy converter;

the pressure adjusting device includes:

a frame;

the movable plate is horizontally positioned in the frame;

the telescopic mechanism is vertically arranged on the movable plate and is in contact with the inner top of the frame;

a cavity is formed between the movable plate and the bottom of the frame and is used for storing liquid.

2. The radiation face pressure adjustable transducer of claim 1, wherein the pressure adjustment device further comprises an oil conduit communicating the cavity with a fluid chamber in the transducer.

3. The radiation face pressure adjustable transducer of claim 2, wherein the movable plate and the top of the frame are each provided with an opening for the oil conduit to pass through.

4. The radiating surface pressure adjustable transducer according to claim 1, wherein the number of the telescopic mechanisms is 2.

5. The radiating surface pressure adjustable transducer according to claim 1, wherein the telescoping mechanism is a spring.

6. The radiating surface pressure adjustable transducer according to claim 1, wherein the housing of the transducer is metal.