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Axial water-cooled ultrasonic transducer

An ultrasonic transducer, axial technology, applied in the direction of fluid using vibration, etc., can solve the problems of reduced high-frequency mechanical strength of prestressed bolts, large frequency drift of ultrasonic transducers, and inability to cool ultrasonic transducers, etc. Achieve the effect of improving work stability, light weight and low product cost

Inactive Publication Date: 2006-11-08
SHAANXI NORMAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The heat dissipation system of the traditional ultrasonic transducer adopts air cooling. This heat dissipation system can only cool the surface of the vibration device of the ultrasonic transducer, but cannot cool the interior of the ultrasonic transducer that generates a higher temperature. Due to high-frequency dielectric loss and high-frequency mechanical vibration internal friction, the internal temperature of the ultrasonic transducer rises rapidly, and it can reach hundreds of degrees (Celsius) in a few minutes. The heat cannot be taken away in time, and the heat accumulation makes the temperature rise even higher. , causing the frequency drift of the ultrasonic transducer to be large, serious detuning can not work normally for a long time, the high-frequency mechanical strength of prestressed bolts is reduced, and cracks cannot be used, and the temperature exceeds the Curie point of the piezoelectric ceramic sheet, and the piezoelectric effect will be lost. In severe cases, it will rupture

Method used

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  • Axial water-cooled ultrasonic transducer

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Experimental program
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Effect test

Embodiment 1

[0014] exist figure 1 Among them, the axial water-cooled ultrasonic transducer of this embodiment is composed of a water outlet joint 1, a prestressed bolt 2, a rear vibration block 3, an insulating ring 4, a rear piezoelectric ceramic sheet 5, a middle and upper piezoelectric ceramic sheet 6, a middle and lower Piezoelectric ceramic sheet 7, front piezoelectric ceramic sheet 8, front vibrating block 9, connecting bolt 10, connecting bolt sealing water glue layer 11, horn 12, water inlet joint 13, flange plate 14, prestressed front sealing water The adhesive layer 15, the front electrode 16, the rear electrode 17, and the prestressed rear sealing water adhesive layer 18 are connected to form.

[0015] A flange 14 is processed at the lower part of the horn 12, and a screw hole and a central water hole are processed at the upper center of the horn 12. The diameter of the central water hole is 20 mm, and the diameter of the screw hole is larger than the diameter of the central wa...

Embodiment 2

[0017] In this embodiment, the central water hole and radial water hole of the horn 12, the central water hole of the connecting bolt 10, the central water hole of the front vibration block 9, the central water hole of the prestressed bolt 2, the water inlet joint 13 And the diameter of the central water hole of the water outlet joint 1 is 1mm. Other parts and the coupling relationship of the other parts are the same as in Embodiment 1.

Embodiment 3

[0019] In this embodiment, the central water hole and radial water hole of the horn 12, the central water hole of the connecting bolt 10, the central water hole of the front vibration block 9, the central water hole of the prestressed bolt 2, the water inlet joint 13 And the diameter of the central water hole of the water outlet joint 1 is 30mm. Other parts and the coupling relationship of the other parts are the same as in Embodiment 1.

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Abstract

An axial water-cooled ultrasonic transducer, a vibration block is arranged on the upper part of the horn through a connecting bolt with a water hole processed in the axial direction, and the front vibration block is connected with a water outlet joint through a water hole processed in the axial direction. The rear vibration block is set on the prestressed bolt, and the front piezoelectric ceramic sheet, the middle and lower piezoelectric ceramic sheet, the middle and upper piezoelectric ceramic sheet, and the rear piezoelectric ceramic sheet are arranged in the insulating ring between the front vibration block and the rear vibration block. , front electrode, and rear electrode. There are axial water holes connected with the axial water holes of the connecting bolts and prestressed bolts in the axial processing of the horn and the front vibration block. There are axial water holes in the radial processing of the horn and The radial water hole connected with the axial water hole, and the water inlet joint connected with the radial water hole, between the connecting bolt and the horn and the front vibration block, the prestressed bolt and the front vibration block and the rear vibration block A water-sealing glue layer is set between the blocks.

Description

technical field [0001] The invention belongs to the technical field of methods or equipment for generating mechanical vibrations of sub-acoustic frequency, acoustic frequency or ultrasonic frequency, and in particular relates to an axial water-cooled ultrasonic transducer using electric energy using piezoelectric effect or electrostriction. Background technique [0002] The heat dissipation system of the traditional ultrasonic transducer adopts air cooling. This heat dissipation system can only cool the surface of the vibration device of the ultrasonic transducer, but cannot cool the interior of the ultrasonic transducer that generates a higher temperature. Due to high-frequency dielectric loss and high-frequency mechanical vibration internal friction, the internal temperature of the ultrasonic transducer rises rapidly, and it can reach hundreds of degrees (Celsius) in a few minutes. The heat cannot be taken away in time, and the heat accumulation makes the temperature rise e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B06B1/06
Inventor 牛勇任金莲张明铎
Owner SHAANXI NORMAL UNIV