CN-119705788-B - Pulse jet propeller driven by polyvinyl chloride electroactive gel material

CN119705788BCN 119705788 BCN119705788 BCN 119705788BCN-119705788-B

Abstract

The invention discloses a pulse jet propeller driven by polyvinyl chloride electroactive gel materials, which belongs to the technical field of jet propulsion, and comprises a shell and a contractible cabin body arranged in the shell, wherein a unidirectional diaphragm pump communicated with the contractible cabin body is arranged at the head end and the tail end of the shell to control water flow to enter from the head end and to be sprayed out from the tail end, clamping plate type driving modules are arranged at two sides of the contractible cabin body, and the contractible cabin body is compressed by applying normal clamping force to two side wall surfaces of the contractible cabin body to extrude and spray fluid in the cabin body to finish the pulse jet propulsion. The invention realizes the water absorption and water spraying actions of the squid imitation, and can complete flexible underwater movement and direction adjustment under low energy consumption.

Inventors

LUO YANG
CHEN JIAQI
HUANG QIAOGAO
Xu Tongshi
ZHU KAIXUAN
QIN CHEN
CAO YONG
PAN GUANG

Assignees

西北工业大学宁波研究院
西北工业大学

Dates

Publication Date: 20260508
Application Date: 20250119

Claims (8)

1. The pulse jet propeller driven by the polyvinyl chloride electroactive gel material is characterized by comprising a shell and a contractible cabin body arranged in the shell, wherein the head end and the tail end of the shell are both provided with unidirectional diaphragm pumps communicated with the contractible cabin body, and water flow is controlled to enter from the head end and be ejected from the tail end; the retractable cabin body is characterized in that two sides of the retractable cabin body, which are symmetrical relative to the central symmetry plane of the propeller, are of plane structures, and the section parallel to the central symmetry plane of the propeller is of a nearly elliptical shape; the clamping plate type driving module comprises two groups of driving assemblies symmetrically arranged on two sides of the contractible cabin body, and each driving assembly comprises a reversing connecting rod and polyvinyl chloride electroactive gel material drivers hinged to two ends of the reversing connecting rod; The reversing connecting rod comprises a bottom rod and two symmetrical connecting rods hinged to the center of the bottom rod and protruding, wherein the free ends of the two connecting rods are respectively hinged with polyvinyl chloride electroactive gel material drivers at the two ends; The polyvinyl chloride electroactive gel material driver is formed by alternately stacking copper nets and polyvinyl chloride gel materials, the stacking direction is consistent with the navigation direction of the propeller, pulse power supply is carried out by introducing 1Hz pulse voltage, the polyvinyl chloride electroactive gel material driver is enabled to be integrally expanded and contracted, the two connecting rods are driven to rotate around the protrusions of the bottom rod based on displacement generated by expansion and contraction, and then the thin plate is driven to normally extrude the contractible cabin body through the bottom rod.
2. The pulse jet propeller driven by polyvinyl chloride electroactive gel material according to claim 1, wherein the contractible cabin is made of silica gel, and the cross-sectional contour line of the contractible cabin parallel to the central symmetry plane of the propeller is NACA0020 line-shaped.
3. A pulsed jet propulsion system based on a polyvinyl chloride electroactive gel material drive according to claim 1, wherein the elastic element comprises two compression springs arranged side by side.
4. The pulse jet propeller driven by polyvinyl chloride electroactive gel materials according to claim 1, wherein the unidirectional diaphragm pump comprises a DF-M65 diaphragm type non-pressure unidirectional valve arranged at the head end of the propeller and a DF-X65V mini spring type unidirectional valve arranged at the tail end of the propeller, when the collapsible cabin sucks/discharges fluid, pressure difference is generated between the outlet/inlet of the head unidirectional diaphragm pump and the outlet/inlet of the tail unidirectional diaphragm pump, so that the fluid enters the collapsible cabin from the head unidirectional diaphragm pump, and the fluid is discharged from the tail unidirectional diaphragm pump.
5. The pulse jet propulsion apparatus according to claim 1, wherein the sheet has a surface contour conforming to a plane structure contour of a side wall of the collapsible shelter, and is a carbon fiber board having a thickness of 0.75 mm.
6. The pulse jet propeller driven by polyvinyl chloride electroactive gel materials according to claim 1, wherein the shell is coated on the outer surfaces of the clamping plate type driving module and the contractible cabin body and is a linear revolving body structure converted by NACA0020 in a linear mode, through holes of the unidirectional diaphragm pump at the tail end are arranged to extend outwards to form a horn-shaped structure so as to increase thrust generated by jet, and fin-shaped structures are arranged on the periphery of the through holes so as to increase streamline and stability of the propeller.
7. The pulse jet propulsion system driven by polyvinyl chloride electroactive gel material according to claim 6, wherein the casing is formed by 3D printing of polylactic acid PLA material.
8. A method of propulsion of a pulsed jet propulsion plant based on actuation of an electroactive gel material according to any one of claims 1 to 7, characterized by the specific steps of: Adjusting the differential pressure of the unidirectional diaphragm pump at the head/tail end of the shell; introducing fluid into the collapsible cabin through the head end unidirectional diaphragm pump, and expanding the collapsible cabin; the method comprises the steps of (1) introducing 1Hz pulse voltage to a polyvinyl chloride electroactive gel material driver of a clamping plate type driving module to carry out pulse power supply, so that the polyvinyl chloride electroactive gel material driver expands and drives a reversing connecting rod in the middle to move towards a contractible cabin; the reversing connecting rods on two sides drive the thin plate to squeeze the contractible cabin body, fluid in the contractible cabin body is sprayed out of the shell from the tail end unidirectional diaphragm pump, and the propulsion of the propeller is completed through the thrust generated by the jet.

Description

Pulse jet propeller driven by polyvinyl chloride electroactive gel material Technical Field The invention belongs to the technical field of jet propulsion, and particularly relates to a pulse jet propulsion device driven by polyvinyl chloride electroactive gel materials. Background In the technical field of jet propulsion of underwater vehicles, two main bionic jet propulsion devices are developed by global researchers. The first is a purely mechanical structure, which is combined with a power device such as a motor to provide high speed and propulsion, but the vibration and noise generated by the device are larger, and the biocompatibility and concealment are poor. For example, the mechanical fish developed in san diego university, california, usa, adopted this design. The second type of propulsion uses smart material drive, which has flexibility in movement that is advantageous in certain application scenarios, but is limited in propulsion efficiency and load capacity. With the rapid development of disciplines such as bionics, robotics, hydrodynamics, material science, and automatic control theory, researchers turn their eyes to living organisms living in water for a long time, and hope to obtain a sense of inspiration of a novel underwater propulsion mode. In recent years, a number of bionic propulsion devices have been developed to improve underwater navigation performance and environmental suitability. Disclosure of Invention The technical problems to be solved are as follows: In order to avoid the defects of the prior art, the invention provides the pulse jet propeller driven by the polyvinyl chloride electroactive gel material, which is used for extruding the contractible cabin body through the clamping plate type driving module, and combining the rebound characteristic of the contractible cabin body, so that the water absorption and water spraying actions of the squid are realized, and the flexible underwater movement and direction adjustment with low noise and stronger concealment can be completed under low energy consumption. The technical scheme is that the pulse jet propeller based on the driving of the polyvinyl chloride electroactive gel material comprises a shell and a contractible cabin body arranged in the shell, wherein a unidirectional diaphragm pump communicated with the contractible cabin body is arranged at the head end and the tail end of the shell to control water flow to enter from the head end and be sprayed out from the tail end, clamping plate type driving modules are arranged at two sides of the contractible cabin body, normal clamping force is applied to the two side wall surfaces of the contractible cabin body to compress the contractible cabin body, and the fluid in the cabin body is extruded and sprayed out to complete the pulse jet propelling action. The retractable cabin body is characterized in that two sides of the retractable cabin body, which are symmetrical relative to the central symmetry plane of the propeller, are of a plane structure, the cross section of the retractable cabin body, which is parallel to the central symmetry plane of the propeller, is of a nearly elliptical shape, a unidirectional diaphragm pump mounting hole is formed in the head/tail end of the retractable cabin body along a central axis, elastic parts are arranged in the retractable cabin body along the direction perpendicular to the central symmetry plane, and two ends of each elastic part are respectively connected with inner walls of the plane structures on the two sides, so that elastic restoring force is applied to the compressed wall surfaces. According to the further technical scheme, the retractable cabin is made of silica gel, and the section contour line of the retractable cabin, which is parallel to the central symmetry plane of the propeller, is in the shape of NACA 0020. The elastic part comprises two compression springs which are arranged in parallel. According to the further technical scheme, the unidirectional diaphragm pump comprises a DF-M65 diaphragm type non-pressure unidirectional valve arranged at the head end of the propeller and a DF-X65V mini spring type unidirectional valve arranged at the tail end, when the shrinkable cabin body sucks/discharges fluid, pressure difference is generated between the outlet/inlet of the head unidirectional diaphragm pump and the outlet/inlet of the tail unidirectional diaphragm pump, so that the fluid enters the shrinkable cabin body from the head unidirectional diaphragm pump, and the shrinkable cabin body is discharged from the tail unidirectional diaphragm pump. The invention further adopts the technical scheme that the clamping plate type driving module comprises two groups of driving components symmetrically arranged at two sides of the contractible cabin body, wherein the driving components comprise reversing connecting rods and polyvinyl chloride electroactive gel material drivers hinged at two ends of the reversing connecting rods;