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Anti-winding pump jet propulsion device and working method

A pump-jet propulsion and anti-winding technology, which is applied to ship propulsion, propulsion components, rotary propellers, etc., can solve problems such as breaking, propeller entanglement, and non-active defense, so as to facilitate winding ropes, improve work efficiency, and ingenious design Effect

Pending Publication Date: 2021-10-29
FISHERY MACHINERY & INSTR RES INST CHINESE ACADEMY OF FISHERY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This scheme has the following deficiencies: First, this scheme is a passive defense, not an active defense. Only after the propeller is entangled can it respond and break it.
Secondly, it failed to solve the entanglement of the rope on the propeller when going backwards

Method used

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  • Anti-winding pump jet propulsion device and working method
  • Anti-winding pump jet propulsion device and working method
  • Anti-winding pump jet propulsion device and working method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] see figure 1 , a pump-jet propulsion device for preventing the propeller from being entangled, which comprises, from front to back, a front free impeller 100, a pump-jet propeller 200, a rear free impeller 300, a front electric cutter 400, and a rear electric cutter 500;

[0035] see Figure 1-Figure 5 , the front blade 110 of the front free impeller 100 is connected with the front impeller hub 120, and is uniformly distributed radially along the circumference of the front impeller hub 120, the front impeller hub 120 is fixed on the outer ring of the rolling bearing 130, and the inner ring of the rolling bearing 130 is fixed on the On the sleeve 150, the sleeve 150 can be fixed on the tail shaft sleeve 910 connected with the hull 900 by welding or fasteners; the front stator 210 to which the pump jet propeller 200 belongs is sleeved on the tail shaft sleeve 910 Above, the rotor 220 to which the pump jet propeller 200 belongs is connected to the tail shaft 920 protrudin...

Embodiment 2

[0049] The differences between this embodiment and Embodiment 1 are:

[0050] see Figure 4 , the front blade 110 of the front free impeller 100 is divided into a center blade 111 and an outer blade 112 to be split. The outer vanes 112 are arranged radially, and the number of the central vanes 111 and the outer vanes 112 may be the same or different. The front duct 140 is supported by the top edge of the vanes contained therein.

[0051] continue to see Figure 4 , along the inner circumference of the front duct 140, the front duct inner vanes 141 are uniformly and radially arranged, and the parts of the front duct inner vanes 141 and the front vanes 110 located in the duct 140 are not only the same blade section, but also have the same blade twist direction , but the length of the vane 141 inside the front duct does not reach the front impeller hub 120; inflow;

[0052] see Figure 5 , along the inner circumferential direction of the rear duct 340, the inner blades 311 o...

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Abstract

The invention relates to an anti-winding pump jet propulsion device which sequentially comprises a front free impeller, a front stator, a rotor, a rear stator and a rear free impeller from front to back in the axial direction. At least one front electric cutting knife is fixedly arranged at the front part of the front stator; at least one rear electric cutting knife is fixedly arranged at the rear part of the rear stator; the front stator, the rotor and the rear stator are fixedly sleeved with a conical guide pipe; the rear free impeller is located in the conical guide pipe, or the rear free impeller is fixedly connected with a rear guide pipe, the conical guide pipe is sleeved with the rear end of the rear guide pipe, and the gap between the rear end of the rear guide pipe and the conical guide pipe is smaller than the size of an object possibly wound; and the front free impeller is arranged in the conical guide pipe, or the front free impeller is fixedly connected with a front guide pipe, the outer diameter of the front guide pipe is smaller than or equal to that of the front free impeller, the conical guide pipe is sleeved with the rear end of the front guide pipe, and the gap between the rear end of the front guide pipe and the conical guide pipe is smaller than the size of an object which can be wound.

Description

technical field [0001] The invention relates to a ship propeller, in particular to an anti-winding pump jet propulsion device and a working method, belonging to the technical field of ship propulsion. Background technique [0002] When a ship sails in a fishing area or aquaculture area, it is often entangled by ropes or nets, causing the propeller to stop and requiring personnel to go into the water for maintenance, which is very inconvenient. [0003] The pump-jet propeller is a marine propeller, the outside of which is a duct, and the two ends or only one end of the duct are provided with a stator. The blade ends of the stator are fixed with the duct and cannot be rotated, so it is called a stator. The middle part of the duct is the propeller, also known as the rotor, and the axes of the stator and the rotor are located on the same straight line. Conventional rotors are driven by the tail shaft of the hull passing through the center of the front stator and connected to th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63H5/16B63H11/04
CPCB63H5/165B63H11/04Y02T70/50B63H5/15B63H11/01B63H2011/081B63H1/28
Inventor 刘和炜
Owner FISHERY MACHINERY & INSTR RES INST CHINESE ACADEMY OF FISHERY SCI
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