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Low-frequency, large-power underwater sound generator

A sounder and high-power technology, which is applied in the field of low-frequency and high-power underwater sounders, can solve problems such as easy scaling and affect heat transfer efficiency and normal operation of industrial production, so as to avoid excessive volume and high temperature blowout , the effect of easy installation

Pending Publication Date: 2019-03-01
NANJING CHANGRONG ACOUSTIC INC +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The equipment is prone to fouling during long-term use, which seriously affects its heat exchange efficiency and normal operation of industrial production

Method used

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  • Low-frequency, large-power underwater sound generator
  • Low-frequency, large-power underwater sound generator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Such as figure 1As shown, the structure diagram of the low-frequency high-power underwater sounder provided by this embodiment includes a sounder housing 2, and one side of the sounder housing 2 is open, and a first diaphragm 3 and a second diaphragm are arranged at the opening. The diaphragm 4, the first diaphragm 3 and the second diaphragm 4 are closely connected, the first diaphragm 3 is arranged on the outside, and the second diaphragm 4 is arranged on the inside; the sounder housing 2 is provided with a magnetic material 11 inside, The outside of the magnetic material 11 is surrounded by the first magnetically permeable material 10a and the second magnetically permeable material 10b, and the first magnetically permeable material 10a and the second magnetically permeable material 10b are formed on the enclosing surface facing the second vibrating membrane 4. Insert one end of the voice coil 6 into the gap, and the other end of the voice coil 6 is connected to the se...

Embodiment 2

[0032] This embodiment is a further improvement on the basis of Embodiment 1, as figure 2 As shown, it also includes a cooling circulation heat exchange pipeline 7, a pressure balance pipeline 8 and an electromagnetic control valve 9, wherein the cooling circulation heat exchange pipeline 7 is wrapped around the voice coil 6, and its head and tail are connected with the electromagnetic control valve 9 to form a cooling circulation loop One end of the pressure balance pipeline 8 is arranged at the bottom end of the sounder housing 2, and the other end is connected to the electromagnetic control valve 9; the magnetic material 11 is NdFeB, which can provide good magnetic properties, and the sounder housing 2 is provided with a magnetic circuit for fixing frame 12, one end of the magnetic circuit fixing frame 12 is fixedly connected to the first magnetically conductive material 10a, and the other end is fixedly connected to the inner wall of the sounder housing 2; the second diaph...

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Abstract

The invention discloses a low-frequency, large-power underwater sound generator. The low-frequency, large-power underwater sound generator comprises a sound generator casing, wherein one side of the sound generator casing is open; a first vibrating diaphragm and a second vibrating diaphragm are arranged at the opening and closely connected with each other; the first vibrating diaphragm is arrangedon the outer side, and the second vibrating diaphragm is arranged on the inner side; a magnetic material is arranged in the sound generator casing; the outside of the magnetic material is enclosed bya first magnetically conductive material and a second magnetically conductive material; a gap, into which one end of a voice coil can be inserted, is formed between enclosing surfaces of the first magnetically conductive material and the second magnetically conductive material right opposite to the second vibrating diaphragm, and the other end of the voice coil is connected with the second vibrating diaphragm; gaps are formed between the end surfaces on both sides of the first vibrating diaphragm and the second vibrating diaphragm and open walls of the sound generator casing; and the end surfaces on both sides of the first vibrating diaphragm and the second vibrating diaphragm are connected with the open walls through flexible and soft connecting pieces. The underwater sound generator provided by the invention has the advantages that the structure is simple; and the pressure in the casing and the voice coil temperature can be monitored in a real-time manner, so that the voice coil temperature can be effectively reduced, and the service life of the voice coil can be further prolonged.

Description

technical field [0001] The invention belongs to the field of transducers and relates to a low-frequency and high-power underwater sounder. Background technique [0002] At present, there are a large number of thermal power plants in my country's coastal areas. Since seawater is used as circulating cooling water, coastal power plants can save considerable investment and operating costs. At the same time, various aquatic organisms are brought into the circulating water system by the water intake pump, which seriously threatens the safety of the unit. run. Among various factors that affect the amount of fish resources, water turbines may lead to a decrease in the survival rate of fish and endanger the ecological balance. In addition, drilling platforms and submarine pipelines are also vulnerable to damage when encountering large fish or schools of fish. During the normal production process of the platform, a large amount of organic matter will be produced, which will attract a...

Claims

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Application Information

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IPC IPC(8): H04R1/44
CPCH04R1/44
Inventor 张玲丽舒中平曹伟陈海洋顾承真闻小明
Owner NANJING CHANGRONG ACOUSTIC INC
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