Flow rate adjustment device
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Solution Overview
Problem
Existing flow rate adjustment devices for solid particles at high temperatures are inadequate, particularly in applications involving fluidized beds of solid particles at temperatures above 500°C.
Innovation Solution
A flow rate adjustment device comprising an adjustment unit with a sealing plate and a moving unit that positions the sealing plate vertically below or retracts from the pipe outlet, allowing for adjustable flow rates through varying pipe cross-sectional areas and rotational movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a sealing plate is positioned vertically below the pipe outlet to adjust flow rate, then flow rate control precision is improved, but device complexity increases due to the moving unit mechanism
Solution Approach 1:
The sealing plate is designed to be movable rather than fixed, allowing it to dynamically adjust its position vertically below the pipe outlet. The moving unit enables the sealing plate to move between different positions to control flow rate, transforming a static structure into a dynamic one that can adapt to different flow requirements.
Solution Approach 2:
The device is divided into distinct functional modules: the pipe, the sealing plate, and the moving unit. This segmentation allows each component to be optimized independently and simplifies the overall design by breaking down the complex flow control function into manageable parts.
2Reliability
If the distance between pipe outlet and sealing surface is increased to prevent abrasion, then reliability is improved, but flow rate adjustment range is reduced
Solution Approach 1:
The movable sealing plate compensates for the increased distance between the pipe outlet and sealing surface. By adjusting the position of the sealing plate, the system maintains both the protective distance for abrasion resistance and the ability to achieve various flow rates through different plate positions.
Solution Approach 2:
The sealing plate acts as an intermediary element between the pipe outlet and the solid particles. It provides a controllable barrier that can be positioned to achieve the desired distance for abrasion protection while still allowing precise flow rate adjustment through its movable nature.
3Adaptability or versatility
If multiple adjustment units with different pipe cross-sectional areas are used to expand flow rate range, then adaptability is improved, but device complexity increases
Solution Approach 1:
A single sealing plate with variable positioning capability performs the function that would otherwise require multiple adjustment units with different cross-sectional areas. The movable sealing plate can achieve different flow rates by changing its position, making one component multi-functional and eliminating the need for multiple specialized components.
Solution Approach 2:
Instead of using multiple static components with fixed cross-sectional areas, the system uses one dynamic component (the movable sealing plate) that can adapt its effective cross-sectional area by changing position. This dynamic approach achieves the same adaptability as multiple static components but with reduced complexity.
Data Source
AI summary
A flow rate adjustment device includes: an adjustment unit including a pipe and a sealing plate provided below an outlet of the pipe, the sealing plate having a sealing surface; and a moving unit that moves the sealing plate to a sealing position where the sealing surface of the sealing plate is positioned vertically below the outlet of the pipe and a retraction position where the sealing surface of the sealing plate is retracted from a point vertically below the outlet of the pipe.