Vibrational Viscometer Sealing Against Hydraulic Perturbations
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Solution Overview
Problem
Vibrational viscometers face challenges in harsh environments with hydraulic perturbations and pump bursts that affect vibration systems, leading to inaccurate viscosity measurements.
Innovation Solution
A viscosity measurement system with a housing and a vibrating rod sealed using compression rings, bellows, flexible circumferential parts, Tig welding, or brazing, which isolates the measurement element from external disturbances, ensuring accurate and reliable viscosity readings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the oscillating rod is exposed to the external environment for measurement, then viscosity measurement can be performed, but the measurement is affected by hydraulic perturbations and pump bursts in harsh environments
Solution Approach 1:
The system is divided into two separate compartments: a sealed internal chamber containing the oscillating rod and measurement electronics, and an external environment that may contain harmful hydraulic perturbations. The rod passes through the housing via a sealed opening, allowing it to interact with the fluid being measured while keeping the sensitive measurement system isolated from external disturbances.
Solution Approach 2:
A sealed housing acts as an intermediary barrier between the sensitive oscillating rod and the harsh external environment. The housing with its sealed opening protects the measurement system from hydraulic perturbations and pump bursts while still allowing the rod to perform its measurement function in the fluid.
2Reliability
If the oscillating rod is sealed within a housing to protect from external disturbances, then resistance to hydraulic perturbations is enhanced, but the device complexity increases
Solution Approach 1:
The housing provides a sealed enclosure with a specifically designed sealed opening that accommodates the oscillating rod. This sealed structure protects the internal measurement system from external hydraulic perturbations while maintaining the necessary functionality. The sealing mechanism prevents harmful factors from entering the internal chamber while allowing rod movement.
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 system provides reliable, repeatable, and continuous viscosity measurements across a wide range of viscosities, pressures, and temperatures in harsh environments, including hazardous zones, with enhanced resistance to hydraulic perturbations.
Implementation Method 1
Vibrational viscometers use a powered vibrating rod to measure viscosity. Different fluids are more or less resistant to vibrations depending on how viscous they are. Therefore, by measuring the dampening of the vibration, or by measuring how quickly the vibration of the viscometer degrades, viscosity can be determined.
Implementation Method 2
the opening bottom in the bottom plate is sealed around the rod by at least one of: compression rings, bellows; a flexible circumferential part of the bottom plate around the opening
Implementation Method 3
Tig welding of the rod to the opening in the bottom plate
Implementation Method 4
brazing of the rod to the opening in the bottom plate
Data Source
AI summary
A viscosity measurement system and method, the system comprising a housing comprising a top cover and a bottom plate, a rod having a first end and a free end, and oscillation generating means, the oscillation generating means being connected through a supporting plate to the first end of the rod, the free end of the rod extending out of the bottom plate through an opening in the bottom plate; wherein the opening bottom in the bottom plate is sealed around the rod by at least one of: compression rings, bellows; a flexible circumferential part of the bottom plate around the opening; Tig welding of the rod to the opening in the bottom plate; and brazing of the rod to the opening in the bottom plate. The method comprises mounting an oscillation generating means connected to a first end of a rod within a housing comprising a top cover and a bottom plate, a free end of the rod extending out of the bottom plate through an opening in the bottom plate; and sealing the opening in the bottom plate around the rod by at least one of: compression rings, bellows; a flexible circumferential part of the bottom plate around the opening; Tig welding of the rod to the opening in the bottom plate; and brazing of the rod to the opening in the bottom plate.