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Sandwich type longitudinal bending complex excitation active water spraying propulsion device and driving method thereof

A composite excitation and water jet propulsion technology, which is used in machines/engines, liquid variable-capacity machines, pumps with flexible working elements, etc., can solve the problems of low power density and small driving force, and achieve high power density. The effect of large driving force and broad application prospects

Inactive Publication Date: 2016-05-18
CHANGCHUN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problems of small driving force and low power density in current piezoelectric water jet propulsion devices, the present invention discloses a sandwich type longitudinal bending compound excitation active water jet propulsion device and its driving method

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  • Sandwich type longitudinal bending complex excitation active water spraying propulsion device and driving method thereof
  • Sandwich type longitudinal bending complex excitation active water spraying propulsion device and driving method thereof
  • Sandwich type longitudinal bending complex excitation active water spraying propulsion device and driving method thereof

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specific Embodiment approach 1

[0038] Specific implementation mode one: combine Figure 1~Figure 20 This embodiment will be described. This embodiment provides a specific implementation of a sandwich-type longitudinal-bending composite vibration-exciting active water jet propulsion device. The sandwich-type longitudinal-bending composite vibration-excited active water jet propulsion device is mainly composed of a valve single wafer 1, a valve metal substrate 2, an end cover 3, a supporting rubber ring 4, a sealing ring 5, a cavity 6, and fastening bolts 7 , The drive assembly 8 for the pump, the enlarged diaphragm 9, the clamping block 10, the metal substrate 11 for the pump, the front end cover 12 and the fastening screw 13 are composed.

[0039] The single wafer 1 for the valve is d 33 A circular piezoelectric ceramic sheet in the excitation mode is polarized along the thickness direction. The end surface of the single chip 1 for the valve is connected to the metal substrate 2 for the valve through epo...

specific Embodiment approach 2

[0050] Specific Embodiment 2: This embodiment provides a specific implementation scheme of a driving method for a sandwich-type longitudinal-bending composite vibration-exciting active water jet propulsion device.

[0051] The specific embodiment of the driving method of the sandwich-type longitudinal-bending composite vibration-excited active water jet propulsion device is: the valve uses a single chip 1 to apply an AC excitation electric signal to generate shortening deformation, so that the valve cavity 6-1 The volume of the valve cavity increases, and the fluid flows into the valve cavity 6-1 through the water inlet 6-5 of the valve cavity; the valve uses a single chip 1 to apply an AC excitation electric signal to cause elongation and deformation, and the pump uses a drive assembly 8 to apply It generates an AC excitation electric signal that shakes the head in one direction, and generates a centrifugal force in one direction, so that the volume of the valve chamber 6-1 be...

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Abstract

The invention discloses a sandwich type longitudinal bending complex excitation active water spraying propulsion device and a driving method thereof. The problems that a current piezoelectric water spraying propulsion device is small in driving force, low in power density and the like are solved. The sandwich type longitudinal bending complex excitation active water spraying propulsion device comprises single crystal wafers for valves, metal base plates for valves, end covers, supporting rubber rings, sealing rings, cavities, fastening bolts, a pump cavity driving assembly, an amplification membrane, a clamping block, a metal base plate for pumps, a front end cover and fastening screws; and each cavity is provided with a valve cavity water inlet, a pump cavity water inlet and a pump cavity water outlet, each valve cavity water inlet is provided with a driving valve base for valves, each pump cavity water inlet is provided with a driving valve base for pumps, and a hydrophobic structure is arranged on the inner wall of each pump cavity water outlet. Electric signals are applied to the single crystal wafers for the valves and the pump cavity driving assembly so as to generate stretching deformation and centrifugal force correspondingly, the volumes of the valve cavities and the pump cavities are alternatively changed, and flowing in and spraying out of fluid are achieved; and under the counter-acting force of sprayed water, propulsion of the device is achieved. The sandwich type longitudinal bending complex excitation active water spraying propulsion device and the driving method have the beneficial effects of being large in driving force, high in power density and the like, and have wide application prospects in the field of trace injection, military surveying and the like.

Description

technical field [0001] The invention relates to a sandwich type longitudinal bending compound excitation active water jet propulsion device and a driving method thereof, belonging to the technical field of water jet propulsion. Background technique [0002] The water-jet propulsion device is a micro-propulsion device that uses the reaction force of the water jetted by the propulsion pump to generate propulsion, and then realizes the motion output. As the power source of the propulsion device, the pump plays an important role in the water jet propulsion technology. At present, the propulsion pumps used in the water jet propulsion device are mainly axial flow pumps, mixed flow pumps and centrifugal pumps. This kind of power pump has low power density, resistance Disadvantages such as poor interference ability and complex structure make it difficult for water jet propulsion technology to meet the application requirements in the fields of robots, small detection, and precision i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B43/04
Inventor 何丽鹏刘娴萍陈栋程光明
Owner CHANGCHUN UNIV OF TECH
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