Double-Containment Injection Lance for Online Chemical Leak Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing chemical injection systems lack effective containment mechanisms for chemicals during online dosing processes, posing safety and environmental risks.
Innovation Solution
A double containment chemical injection system is designed, featuring a pump box attached to a chemical tank and an injection assembly with a lance having a flange and stem, along with double containment conduits to ensure safe chemical delivery to a process line.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional chemical injection system is used, then the system structure is simple, but there is no effective containment mechanism for chemical leaks
Solution Approach 1:
The patent implements double containment by nesting an inner conduit within an outer conduit. The inner conduit carries the chemical from the pump box to the injection lance, while the outer conduit surrounds it to contain any potential leaks. This nested structure provides redundant containment without requiring completely separate parallel systems.
Solution Approach 2:
The injection lance is segmented into distinct functional zones: a flange portion for connection, a stem portion for chemical delivery, and outlet ports for injection. The flange includes a sealed chamber that isolates the chemical pathway from the external environment, creating segmented containment zones that prevent uncontrolled leakage.
2Reliability
If double containment conduits are added to the system, then chemical leak containment is improved, but the device complexity increases
Solution Approach 1:
The inner conduit is positioned within the outer conduit, creating a compact double containment structure. The sealed chamber in the flange portion further segments the chemical pathway, isolating it from the external environment. This nested and segmented approach provides redundant containment without requiring completely separate parallel systems.
Solution Approach 2:
The pump box is integrated directly into the tank structure, eliminating the need for separate external pumping equipment. The injection lance combines multiple functions (chemical delivery, sealing, and injection) into a single component, reducing the number of separate parts while maintaining double containment capability.
3Reliability
If seals are added at the flange and lance connections, then chemical containment is improved, but manufacturing complexity increases
Solution Approach 1:
The pump box is integrated directly into the tank structure, eliminating the need for separate external pumping equipment. The injection lance combines multiple functions (chemical delivery, sealing, and injection) into a single component, reducing the number of separate parts while maintaining double containment capability.
Solution Approach 2:
The injection lance is segmented into distinct functional zones: a flange portion for connection, a stem portion for chemical delivery, and outlet ports for injection. The flange includes a sealed chamber that isolates the chemical pathway from the external environment, creating segmented containment zones that prevent uncontrolled leakage.
Data Source
AI summary
Provided is a chemical injection system for connection to a chemical tank and a process line. The system includes a pump box configured to attach to the tank, the pump box including a body defining an interior, a pump assembly disposed within the interior of the body of the pump box, and an injection assembly configured to be fluidly coupled to the pump box. The injection assembly includes an injection lance having a flange and a stem, a first seal abutting a first side of the flange of the injection lance, and a second seal abutting a second side of the flange of the injection lance.