Transformer Tank Inspection Robot With Virtual Positioning
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Solution Overview
Problem
Current methods for inspecting liquid-filled high-voltage transformers require draining the liquid or opening the tank, making in-situ inspection difficult and inefficient, especially for large and heavy transformers.
Innovation Solution
A remotely controlled inspection device with fluid flow channels and pumps that allow for reversible motion within the transformer tank, combined with a virtual model of the transformer for positioning and control, enabling in-situ inspection without draining the liquid or opening the tank.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If non-invasive techniques are used to identify potential problems, then the transformer can be inspected without draining liquid or opening the tank, but the ability to directly observe internal components is limited
Solution Approach 1:
The patent replaces traditional mechanical inspection methods (draining liquid, opening tanks, manual entry) with an autonomous robotic inspection device that uses sensors, cameras, and navigation systems to observe internal components remotely, achieving both ease of operation and adequate inspection accuracy
Solution Approach 2:
The inspection device creates a virtual model or digital representation of the transformer's internal components by capturing data through sensors and imaging devices, allowing operators to examine a accurate copy of the internal structure without physical access
2Measurement precision
If the transformer tank is opened or liquid is drained for inspection, then direct observation of internal components is possible, but the transformer requires shutdown and loses operational continuity
Solution Approach 1:
The inspection device is self-contained with onboard power supply, propulsion systems, and navigation capabilities, allowing it to operate autonomously within the transformer tank without requiring external support or transformer shutdown, thus maintaining operational continuity while achieving accurate inspection
3Ease of repair
If large liquid-filled power transformers are transported or replaced, then maintenance and repair can be performed, but the extreme weight and size make these operations difficult and costly
Solution Approach 1:
The patent extracts the inspection function from the transformer itself by introducing a separate, autonomous robotic device that can navigate and inspect internal components without removing or moving the transformer, eliminating the need for heavy lifting and transportation operations
4Productivity
If an inspection device is inserted into the transformer tank, then in-situ inspection is enabled, but the device must navigate confined spaces with limited maneuverability
Solution Approach 1:
The inspection device employs dynamic propulsion systems with multiple thrusters that can be independently controlled to provide omnidirectional movement and rotation, allowing the device to adapt its motion to the confined geometry of the transformer tank and reach any inspection point efficiently
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
Enables visual and other inspections of internal transformer components without draining the oil, allowing for precise control and stability within the tank, reducing maintenance costs and improving inspection efficiency.
Implementation Method 1
A remotely controlled inspection device with fluid flow channels and pumps that allow for reversible motion within the transformer tank
Data Source
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AI summary
An inspection device for use in a fluid container having at least an opening includes a housing sized to fit through the opening. The housing has at least two fluid flow channels extending therethrough, each having an inlet and an outlet, and a pump maintained in the housing within each fluid flow channel. The pumps are selectively controlled to maneuver the housing within the fluid container. The inspection device continues with a method of in-situ inspection of a container having at least one opening to receive a fluid, that includes up-loading a virtual model of the container into a computer, inserting the device into the container, generating a position signal by the device and receiving the position signal on a computer. A virtual image of the device in the virtual model of the container is generated so as to determine an actual position of the device within the container.