Differential Pressure Level Gauge with Vertical Indicator
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing level indicating devices for tanks face challenges such as contamination of glass parts, interference from steam, and high costs associated with accurate level measurement, especially in high-temperature and high-pressure environments.
Innovation Solution
A level indicating device that uses a differential pressure type level gauge to measure fluid levels in tanks, with a level indicator that moves vertically according to the differential pressure signal, and includes a cleaning device and a beam irradiation portion to ensure accurate and reliable level indication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a balanced reflection type device or balanced glass type device is used to directly check the fluid level through a transparent observation part, then the fluid level can be visually observed, but the glass part becomes contaminated and the observation becomes difficult due to steam interference
Solution Approach 1:
The patent introduces a level indicator as an intermediary element that moves according to the fluid level but is not directly exposed to the harsh environment. This mediator transfers the level information from the tank to the observer without being contaminated by steam or fluid, resolving the contradiction between visual observation and observation accuracy.
Solution Approach 2:
The patent replaces the direct visual observation through glass (optical system) with a mechanical indicator system that responds to differential pressure. This substitution eliminates the need for transparent observation parts that are prone to contamination while maintaining accurate level indication.
2Reliability
If a remote drum level indicator with electrode rods is used to measure fluid level, then the level can be measured in high-temperature and high-pressure tanks, but the measurement accuracy for continuous level change is poor and the cost is very high
Solution Approach 1:
The patent replaces the electrode rod-based electrical measurement system with a differential pressure-based mechanical system. This substitution enables accurate continuous level measurement through pressure differential while being suitable for high-temperature and high-pressure environments, resolving both reliability and precision issues.
Solution Approach 2:
The patent changes the measurement parameter from electrical conductivity (electrode rods) to pressure differential. This parameter change enables continuous level measurement with linear characteristics while maintaining compatibility with high-temperature and high-pressure conditions, improving both precision and reliability.
3Measurement precision
If a level indicator moves vertically according to differential pressure signal, then accurate level indication is achieved, but the device complexity increases due to additional components like cleaning device and beam irradiation portion
Solution Approach 1:
The patent implements a cleaning device that automatically cleans the front surface of the level indicator without external intervention. This self-service mechanism maintains measurement accuracy by removing contaminants automatically, justifying the added complexity through reduced maintenance requirements and sustained precision.
Solution Approach 2:
The patent uses a beam irradiation portion that emits light (laser beam) to illuminate the level indicator. This optical enhancement improves visibility and measurement precision, particularly in challenging environmental conditions, making the additional complexity worthwhile for maintaining accurate readings.
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 device allows for convenient and accurate monitoring of fluid levels in tanks, even in challenging environments, with reduced costs and improved reliability compared to traditional methods.
Implementation Method 1
a differential pressure type level gauge configured to measure a level of a fluid in the tank on the basis of a pressure according to the level of the fluid in the tank
Implementation Method 2
the beam irradiation portion is coupled to the moving portion and configured to irradiate light to the level of the fluid, and the beam irradiation portion is configured to irradiate a laser beam
Data Source
AI summary
A level indicating device for a tank includes: a differential pressure type level gauge configured to measure a level of a fluid in a tank on the basis of a pressure according to the level of the fluid in the tank; and a level indicator configured to indicate the level of the fluid by moving in a vertical direction according to a differential pressure signal measured by the differential pressure type level gauge.