Radial Conduit Cutting Nozzle Assembly
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing conduit cutting systems for oil, gas, and mining operations face issues with wear and damage due to excessive pressure buildup, reducing their life and reusability, and are cumbersome in design, making them difficult to construct and maintain.
Innovation Solution
A cutting system with a novel nozzle assembly configuration that includes a conical head, spindle, and diverter, featuring a 90-degree bend and heat-resistant materials, which disperses and increases the pressure and velocity of the heated gas flow radially to cut through conduits while protecting the internal components from damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional nozzle assembly configurations are used, then the cutting system can perform conduit cutting, but excessive pressure buildup causes wear and damage to internal components, reducing system life and reusability
Solution Approach 1:
The nozzle assembly is segmented into multiple functional components: a conical head for flow distribution, a spindle for structural support, a retainer for component positioning, and a diverter for flow direction control. This segmentation allows each component to be optimized for its specific function, distributing the pressure management tasks across multiple elements rather than concentrating stress on single components.
Solution Approach 2:
Different regions of the nozzle assembly have specialized properties: the conical head features a specific angle (less than 41 degrees) for optimal flow dispersion, the diverter includes a 90-degree bend for precise flow redirection, and heat-resistant materials are applied at critical locations. These localized quality enhancements enable effective pressure and flow management at specific points where needed most.
2Ease of manufacture
If conventional nozzle designs are used, then cutting function is achieved, but the design is cumbersome and difficult to construct and maintain
Solution Approach 1:
The nozzle assembly components are nested within each other in a compact arrangement: the spindle is positioned within the conical head, the retainer surrounds the spindle, and the diverter is integrated into the assembly. This nested configuration reduces the overall footprint and simplifies assembly procedures while maintaining the necessary functional complexity for effective pressure and flow management.
Solution Approach 2:
The movable sleeve can move away from the apparatus housing in response to pressure changes, dynamically exposing the circumferential diverter gap. This dynamic feature allows the system to automatically adjust to varying operating conditions without requiring complex control mechanisms, simplifying both construction and maintenance while improving adaptability.
3Productivity
If uniform gas flow dispersal is achieved through multiple holes, then pressure and velocity are increased, but more combustible material is required
Solution Approach 1:
The conical head features a curved surface with a specific angle (less than 41 degrees) that naturally directs and disperses the gas flow through the jacket and sheath holes. This curved geometry optimizes flow distribution patterns, ensuring uniform dispersal through multiple holes while maximizing the efficiency of each unit of combustible material consumed, thereby improving cutting productivity without proportionally increasing material consumption.
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 enhances the durability and efficiency of conduit cutting by reducing wear on internal components and allowing for more effective cutting with less combustible material, improving the life and reusability of the cutting system and enabling cuts in conduits of varying thicknesses.
Implementation Method 1
The diverter increases the pressure and velocity of the flow of heated gas after the flow of heated gas passes through the retainer. The diverter imposes a 90-degree bend in the direction of the flow of the heated gas
Implementation Method 2
The diverter increases the pressure and velocity of the flow of heated gas after the flow of heated gas passes through the retainer
Implementation Method 3
the flow of heated gas projects radially to perform the cutting function of the cutting system
Implementation Method 4
Gas forming thermite pipe cutters, ignite combustible pyrotechnic materials to create a radially directed flow of heated gas used to cut the conduit into two portions
Implementation Method 5
the retainer comprises a heat resistant material to protect the sheath and the inner wall of the nozzle assembly from the heat generated by the flow of heated gas
Implementation Method 6
a plurality of jacket through holes for dispersing the flow of heated gas evenly through the nozzle assembly and for increasing the pressure and velocity of the flow of heated gas
Implementation Method 7
for dispersing the flow of heated gas evenly through the nozzle assembly and for increasing the pressure and velocity of the flow of heated gas
Data Source
AI summary
An apparatus housing for a cutting system for radially projecting a flow of heated gas to cut from an internal surface through an external surface of a conduit. The cutting system adapted to be positioned within the conduit comprising an igniter, an extension housing, and an apparatus housing. The apparatus housing has a movable sleeve section and a nozzle assembly. The nozzle assembly comprises a conical head with through holes for evenly dispersing the flow of heated gas. A retainer abuts a diverter. The diverter imposes a 90-degree bend in the direction of the flow of the heated gas to cause the flow of heated gas to move the sleeve section away from the apparatus housing to expose a circumferential diverter gap through which the flow of heated gas projects radially to perform the cutting function. A spindle provides structure for the nozzle assembly and maintains the position of the nozzle assembly in the apparatus housing.