Radioactive Sludge Transfer Apparatus with Remote Stirring

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Solution Overview

Problem

Existing radioactive sludge transfer apparatuses face challenges in minimizing radiation exposure to workers, efficiently crushing sludge, and transferring sludge without increasing radioactive waste, particularly due to the complexity of moving and positioning equipment and the time required for initial crushing and residual sludge handling.

Innovation Solution

A compact radioactive sludge transfer apparatus with a transfer apparatus body equipped with a stirring apparatus, sludge solution transfer means, attitude control float, and floating force control ballast tank, featuring a supernatant solution suction pump, injection nozzle with adjustable angle, and suction ports with open/close mechanisms, allowing remote operation and efficient sludge crushing and transfer.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If conventional transfer systems use separate air-blowing devices and supernatant solution jetting devices, then sludge crushing function is provided, but device complexity increases and operational time is extended

Engineering Contradiction:
Improvestructure complexityVSAvoidsludge transfer efficiency
Core Design Contradiction:
Device complexityVSProductivity

Solution Approach 1:

The patent combines the air-blowing device and supernatant solution jetting device into a single integrated stirring apparatus. The apparatus includes both an air blowing unit and a supernatant solution jetting unit that operate together to crush sludge, eliminating the need for separate devices and reducing structural complexity while maintaining crushing effectiveness.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The stirring apparatus serves multiple functions: it blows air to separate sludge from supernatant solution, jets supernatant solution to crush sludge, and stirs the mixture. This multi-functional design replaces multiple specialized devices, reducing device complexity while improving operational efficiency.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Object-affected harmful factors

If workers manually operate sludge transfer equipment, then operational flexibility is maintained, but radiation exposure to workers increases

Engineering Contradiction:
Improveradiation exposureVSAvoidoperational flexibility
Core Design Contradiction:
Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The patent replaces manual mechanical operation with an automated control system. The stirring apparatus, sludge solution transfer pump, and supernatant solution jetting are all controlled automatically, eliminating the need for workers to physically enter or manually operate equipment in high-radiation zones while maintaining full operational control.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Speed

If sludge is transferred without crushing, then transfer speed is maintained, but sludge solution viscosity increases reducing transfer efficiency

Engineering Contradiction:
Improvetransfer speedVSAvoidsludge solution viscosity
Core Design Contradiction:
SpeedVSQuantity of substance

Solution Approach 1:

The stirring apparatus performs preliminary crushing of sludge before transfer. By blowing air and jetting supernatant solution into the sludge beforehand, the sludge is broken down into smaller particles, reducing viscosity of the sludge solution and enabling faster, more efficient transfer through the pump system.

Inventive Principle:
Principle #10Preliminary action

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 apparatus enables minimal radiation exposure, efficient sludge transfer without increasing radioactive waste, and allows for quick movement and crushing of sludge at any position, effectively transferring sludge with reduced operational time and increased safety.

Implementation Method 1

a floating force control ballast tank (16) which is capable of controlling a floating force of the transfer apparatus body (1)

Methodology Applied
Scientific EffectBuoyancy: Archimedes' Principle (Buoyancy)

Implementation Method 2

a sludge solution suction pump (9) for sucking the sludge solution (37)

Methodology Applied
Scientific EffectSuction: Suction

Implementation Method 3

an injection nozzle (4) for jetting the supernatant solution (32) to the sludge (31)

Methodology Applied
Scientific EffectFluid jetting: Jet

Data Source

PatentUS9117557B2Radioactive sludge transfer apparatus
Publication Date: 2015.08.25 TAIHEI DENGYO KAISHA
  • US9117557B2 patent drawing
  • US9117557B2 patent drawing
  • US9117557B2 patent drawing

AI summary

Provided is a radioactive sludge transfer apparatus for transferring sludge stored in a sludge storage tank with supernatant solution to a transfer tank including: a transfer body; a stirring apparatus for blasting the supernatant solution to the sludge; a sludge solution transferer for transferring the sludge solution to the transfer tank; an attitude control float; a floating force control ballast tank; and controller for remotely controlling the stifling apparatus, the sludge solution transferer and the floating force control ballast tank.