Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Propeller with blade tip vibration and for vibration attenuation and noise reduction ship

A marine propeller, vibration and noise reduction technology, applied in the direction of rotating propellers, rotating propellers, etc., can solve the problems of high vibration and high noise, and achieve the effect of improving dynamic performance, simple design ideas, and simple and easy methods

Inactive Publication Date: 2016-11-09
HARBIN INST OF TECH
View PDF5 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of large vibration and high noise of traditional marine propellers, the present invention further proposes a vibration-reduction and noise-reduction marine propeller with blade tip vibration

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Propeller with blade tip vibration and for vibration attenuation and noise reduction ship
  • Propeller with blade tip vibration and for vibration attenuation and noise reduction ship

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0009] Specific implementation mode one: combine figure 1 with figure 2 This embodiment is described. The vibration and noise reduction marine propeller of blade tip vibration described in this embodiment includes a hub 6 and a plurality of blades, and the plurality of blades are evenly distributed on the propeller along the circumferential direction of the hub 6. On the outer wall of the hub 6, this embodiment also includes a plurality of rotary hinges 3, a plurality of driver displacement transmission rods 4 and a plurality of drivers 5, each of the blades is composed of a blade tip 1 and a blade body 2, and the blade The tip 1 is connected to the blade main body 2 through two rotating hinges 3 , a plurality of drivers 5 are installed in the hub 6 , and each driver 5 is connected to a corresponding blade tip 1 through a driver displacement transmission rod 4 .

[0010] In this embodiment, the periodic displacement generated by the driver 5 is transmitted to the blade tip 1...

specific Embodiment approach 2

[0014] Specific implementation mode two: combination figure 1 with figure 2 The present embodiment is described. The blade tip 1 and the blade main body 2 of the vibration-damping and noise-reducing marine propeller of the blade tip vibration described in this embodiment are both made of resin-fiber composite material. In this embodiment, the blade tip 1 can reciprocate around the rotary hinge 3 , and this structure can largely ensure the flexibility of the blade tip 1 to swing. Other components and connections are the same as those in the first embodiment.

specific Embodiment approach 3

[0015] Specific implementation mode three: combination figure 1 with figure 2 The present embodiment is described. Each blade tip 1 of a marine propeller with vibration reduction and noise reduction for blade tip vibration described in this embodiment is provided with a displacement sensor and a speed sensor.

[0016] The technical effect of this embodiment is: so set, the displacement sensor and the speed sensor can detect the initial vibration signal of the propeller blade tip 1 and the signal after noise reduction at any time, and the control system can be controlled by initial monitoring and real-time feedback to the control system. Monitor the overall status of the current propeller at all times. Other compositions and connections are the same as those in Embodiment 1 or 2.

[0017] working principle

[0018] The driver 5 transmits the periodic displacement to the blade tip 1 through the driver displacement transmission rod 4, which causes the blade tip 1 to generate ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a propeller for a ship, in particular to a propeller with blade tip vibration and for a vibration attenuation and noise reduction ship, and belongs to the field of ship manufacturing. The problem that traditional propellers for ships are severe in vibration and high in noise is solved. The propeller comprises a propeller hub and a plurality of blades. The multiple blades are evenly mounted on the outer side wall of the propeller hub in the circumferential direction of the propeller hub. The propeller further comprises a plurality of rotary hinges, a plurality of driver displacement transmission rods and a plurality of drivers. Each blade is composed of a blade tip and the blade main body, and the blade tip is connected with the blade main body through the two rotary hinges. The multiple drivers are mounted in the propeller hubs. Each driver is connected with the corresponding blade tip through the corresponding driver displacement transmission rod.

Description

technical field [0001] The invention relates to a marine propeller, in particular to a vibration-reduction and noise-reduction marine propeller for blade tip vibration, and belongs to the field of shipbuilding. Background technique [0002] The vibration and noise of marine propellers have always been a hot topic in the field of marine research. In order to reduce the vibration and noise of propellers, researchers from all over the world have worked hard and proposed many improvement methods for propellers. The typical ones are structural improvements. Improvements, such as large skewed propeller blades, but these changes have weakened the overall performance of the propeller to a large extent, and the improvement methods are unsatisfactory to a certain extent. However, the present invention uses intelligent materials combined with variant structures to provide a simple and easy vibration and noise reduction method, which is expected to provide new ideas for reducing the vib...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B63H1/26B63H1/20
CPCB63H1/26B63H1/20
Inventor 刘彦菊陈凡龙刘立武孙健冷劲松
Owner HARBIN INST OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com