Ship Propulsion Pump Sacrificial Anode Coupling
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Solution Overview
Problem
Existing ship propulsion systems face challenges in preventing electro-corrosion, particularly when insulating sections interrupt electric coupling, leading to corrosion issues in rod members.
Innovation Solution
A pump device with a sacrificial anode system that includes a first and second case with insulating sections to prevent electric coupling, utilizing a valve member to control hydraulic fluid flow and electrically couple the cases, ensuring secure electric coupling to the sacrificial anode and minimizing electro-corrosion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If insulating sections are added to prevent electric coupling between cases, then electro-corrosion resistance is improved, but electric coupling to sacrificial anode is interrupted
Solution Approach 1:
The pump device is divided into a first case and a second case with insulating sections between them, separating the hydraulic function from the electrical coupling function. The insulating sections prevent direct electric coupling between cases, while the valve member provides a dedicated electrical coupling path to the sacrificial anode.
Solution Approach 2:
The valve member acts as an intermediary component that serves dual functions: controlling hydraulic fluid flow between cases and providing electrical coupling to the sacrificial anode. This mediator component resolves the contradiction by enabling electrical coupling without requiring direct contact between the conductive cases.
2Productivity
If valve member is designed to control hydraulic fluid flow, then fluid control function is improved, but electrical coupling capability may be compromised
Solution Approach 1:
The valve member is designed with multi-functionality, serving both as a hydraulic fluid control component and as an electrical coupling conductor. The valve main body made of conductive material enables it to perform both fluid flow regulation and electrical connection to the sacrificial anode, eliminating the need for separate components.
3Device complexity
If simple configuration is used, then device complexity is reduced, but securing electric coupling becomes difficult
Solution Approach 1:
The electrical coupling function is merged into the existing valve member structure rather than being implemented as a separate system. The conductive valve main body inherently provides the electrical coupling path to the sacrificial anode, achieving secure electrical connection without adding complex separate coupling mechanisms.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively secures electric coupling to the sacrificial anode, reducing the occurrence of electro-corrosion in ship propulsion systems by using a simple configuration that includes insulating sections and a conductive valve member to manage hydraulic fluid flow.
Implementation Method 1
a sacrificial anode coupled to one of the first case and the second case and suppressing corrosion of the first case and the second case
Implementation Method 2
a valve member which is provided in the channel, controls the flow of the hydraulic fluid flowing in the channel
Data Source
AI summary
A pump device includes a first case, a second case, a sacrificial anode. The first case has a channel in which hydraulic fluid flows. The second case provides in contact with the first case. The sacrificial anode is coupled to one of the first case and the second case and suppresses corrosion of the first case and the second case. At least one of the first case and the second case includes an insulating section that interrupts electric coupling between the first case and the second case. The pump device further includes a valve member provided in the channel, controlling the flow of the hydraulic fluid flowing in the channel, and electrically coupling the first case and the second case.