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PMNT piezoelectric transducer for ultrasonic deicing

A piezoelectric transducer and ultrasonic technology, which is applied in the direction of fluid using vibration, etc., can solve the problems of unsuitability for assembly and deicing, the total weight of the transducer is large, and the volume of the front mass block is large. The effect of high processing and working frequency

Pending Publication Date: 2019-02-22
BEIHANG UNIV
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Problems solved by technology

Although the generally used sandwich-type thickness vibration transducer has stable output and large power capacity, in order to increase the front-to-back vibration velocity ratio during design, a rear mass block with a higher density is used, and the front mass block is larger in size. Therefore, the total weight of the transducer is relatively large, and it is not suitable for assembly on the aircraft for deicing

Method used

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  • PMNT piezoelectric transducer for ultrasonic deicing
  • PMNT piezoelectric transducer for ultrasonic deicing
  • PMNT piezoelectric transducer for ultrasonic deicing

Examples

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Embodiment 1

[0044] Embodiment 1: The transducer includes components such as a rear cover plate 1, a piezoelectric sheet 2, a front gasket 3, an electrode sheet 4, a circular base 5, a casing 6, and bolts 7, and two piezoelectric sheets 2 of the same thickness An electrode sheet 4 is covered between them, and two piezoelectric sheets 2 are respectively connected to the front gasket 3 and the rear cover plate 1. There is a circular base 5 in the middle of the front gasket 3, and a shell 6 is glued and fixed on the circular base 5. And the two piezoelectric sheets 2 and the electrode sheets 4 are surrounded by the casing 6, the rear cover 1, the piezoelectric sheet 2, the electrode sheet 4, and the circular base 5 are all provided with concentric holes, and the concentric holes are connected to form a connecting channel , There are prestressed adjusting bolts installed in the connecting channel.

[0045] attached Figure 4 As shown, the total thickness m of the transducer is 10.4㎜, and the ...

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Abstract

The invention discloses a PMNT piezoelectric transducer for ultrasonic deicing. The piezoelectric transducer is provided with a back cover plate, two piezoelectric chips and front gaskets in turn fromtop to bottom, wherein electrode chips are arranged between the back cover plate and the piezoelectric chip, between the two piezoelectric chips, and between the piezoelectric chip and the front gasket, a base is arranged at the center of the front gasket, concentric round holes are arranged on the back cover plate, the piezoelectric chips, the electrode chips and the base, and each concentric round hole is connected to another hole to form a connecting channel, a bolt is arranged in the connecting channel, a shell is fixed on the back cover plate, and the shell is circumferentially arrangedon the outer sides of the piezoelectric plates and the electrode plates. The PMNT piezoelectric transducer has the advantages of stable output, large power capacity, small size, light weight, easy installation and so on and the PMNT piezoelectric transducer is suitable for being mounted on a plane to deice.

Description

technical field [0001] The invention relates to the technical field of ultrasonic deicing, in particular to a thickness vibration type PMNT piezoelectric transducer. Background technique [0002] With the development of aviation technology, airplanes have become one of the important modes of travel and transportation, and flight safety has always been a focal issue in the aviation field. The survey found that aircraft icing is one of the important reasons for aircraft crashes and accidents. Aircraft icing poses a huge threat to flight safety. However, the existing deicing methods are not satisfactory in terms of energy consumption and weight. There are many areas for improvement, and the aviation field urgently needs to find a breakthrough and more effective method of deicing. Ultrasonic deicing is a new type of deicing method. The basic principle of deicing is: when the ultrasonic wave propagates between the aircraft skin and the ice layer, due to the different properties ...

Claims

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Application Information

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IPC IPC(8): B06B1/06
CPCB06B1/0607B06B2201/55
Inventor 徐元铭雷育永刘若冰王依兵李连臣
Owner BEIHANG UNIV
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