Optical Measuring Device Leak Detection Port
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing optical measuring devices, such as refractometers, often fail to detect leaks between the process medium and the device, leading to contamination risks and potential re-entry of leaked medium due to undetected pressure differences, especially when the humidity sensor or electronics are not functioning.
Innovation Solution
The optical measuring device incorporates a leak detection port with a fluid flow path and a gasket between the measuring head or optical window and the measurement orifice, allowing leaked process fluid to drain outward through the port, reducing pressure differences and enabling visual detection of failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a gasket is used to seal the measuring head to the measurement orifice, then sealing reliability is improved, but leak detection capability deteriorates because the sealed space becomes isolated
Solution Approach 1:
A detection channel is introduced as an intermediary element between the sealed measuring head and the external environment. This channel allows leaked process medium to escape and become visible externally, solving the detection problem without compromising the seal. The detection channel acts as a mediator that translates internal leakage into external observable signs.
Solution Approach 2:
The detection channel extracts the leaked process medium from the isolated sealed space and redirects it to an external detection location. By taking out the leaked fluid through this dedicated pathway, the system maintains sealing integrity while enabling leak detection through visual observation at the channel outlet.
2Measurement precision
If humidity sensors and electronics are used to detect leaks, then detection sensitivity is improved, but device complexity and failure risk increase
Solution Approach 1:
The patent replaces complex electronic detection systems (humidity sensors, electronics) with a simple mechanical/physical solution - an open detection channel. The leaked process medium naturally flows through the channel due to pressure differential, providing passive leak indication without requiring power, sensors, or complex processing.
Solution Approach 2:
The detection channel utilizes the natural pressure differential between the process medium and the instrument interior to drive leaked fluid through the channel automatically. This self-driven flow eliminates the need for active pumping or electronic activation, providing a fail-safe, maintenance-free detection mechanism.
3Measurement precision
If pressure difference is maintained for measurement accuracy, then measurement precision is improved, but contamination risk worsens due to potential re-entry of leaked medium
Solution Approach 1:
Instead of trying to prevent re-entry of leaked medium, the patent inverts the approach by providing a dedicated escape pathway (detection channel) that directs leaked fluid outward. This reverses the potential harmful flow direction, ensuring that pressure differential continues to drive leakage outward through the channel rather than allowing backflow into the process medium.
Solution Approach 2:
The patent converts the harmful effect of pressure-driven leakage into a beneficial detection mechanism. The same pressure differential that causes leakage is harnessed to drive leaked fluid through the detection channel, making the leakage process itself the detection signal. This transforms a harmful phenomenon into a useful diagnostic tool.
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
This design allows for immediate visual detection of leaks and prevents re-entry of leaked medium into the process, reducing contamination risks and ensuring safer operation by equalizing pressure differences between the process space and the device's interior.
Implementation Method 1
a gasket (9) arranged between the measuring head (2) and the measurement orifice (7)
Implementation Method 2
inside the outer shell (4) is arranged a fluid flow path (10) extending from the gasket (9) towards the fastening flange part (8)... the leak detection port (11) drains from the process space (16) past the gasket (9) leaked process fluid (15) upon the gasket failure
Data Source
AI summary
An optical measuring device including a measuring head, an inner shell including a light transmitter and a light receiver, an outer shell including a measurement orifice in one end and a fastening flange part in another end, the inner shell is arranged at least partially in the outer shell, the measuring head is arranged in the outer shell and attached to the measurement orifice from its first end and to an end of the inner shell from its second end, a gasket is arranged between the measuring head and the measurement orifice, and inside the outer shell is arranged a fluid flow path extending from the gasket towards the fastening flange part, wherein to the outer shell is formed a leak detection port having one end opening into the fluid flow path and another end opening into a side surface of the outer wall in the fastening flange part wherein a fastening flange protrudes between the opening into the side surface and the measurement orifice.