Accumulator Colliding Jet Controller Vortex Prevention
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Solution Overview
Problem
Current flow dampers in accumulators require frequent rebuilding and high fabrication costs to adjust the angle and flow rates for preventing vortex formation during large flow injection, which is inefficient and labor-intensive.
Innovation Solution
Incorporating a colliding jet controller, such as a bevel or projection, at the junction of the small flow pipe and vortex chamber to control the colliding jet, allowing for direct flow to the outlet without vortex formation, thereby adjusting the angular momenta without rebuilding the entire flow damper.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the angle and flow rates of the large flow pipe and small flow pipe are adjusted to prevent vortex formation during large flow injection, then the jet collision effect is improved, but the device requires frequent rebuilding and incurs high fabrication costs
Solution Approach 1:
The flow damper is divided into modular components: the vortex chamber, large flow pipe, small flow pipe, and outlet pipe can be independently manufactured and assembled. This segmentation allows adjustment of individual components without rebuilding the entire device, reducing fabrication costs while maintaining precise jet collision control.
Solution Approach 2:
The flow rates in the large flow pipe and small flow pipe are made dynamically adjustable during operation rather than being fixed during manufacturing. This allows optimization of the jet collision effect for different operating conditions without requiring frequent rebuilding of the device structure.
2Manufacturing precision
If the entire flow damper is rebuilt to adjust the angle and flow rates, then the jet collision control is improved, but the labor and time required for adjustment increases significantly
Solution Approach 1:
By segmenting the flow damper into adjustable modules, only the specific components requiring adjustment (such as the small flow pipe or vortex chamber) need to be accessed and modified, rather than dismantling and rebuilding the entire device. This dramatically reduces the time and labor required for maintenance and optimization.
Solution Approach 2:
The flow damper is designed with pre-configurable adjustment mechanisms that allow operators to make necessary modifications during routine maintenance intervals rather than requiring complete rebuilding. This preliminary design consideration reduces both time and complexity of future adjustments.
3Reliability
If the jet from the large flow pipe and small flow pipe collide to offset angular momenta, then vortex formation is prevented, but the structural complexity of the flow damper increases
Solution Approach 1:
The flow damper merges the functions of vortex prevention and flow rate control into a single integrated structure. The vortex chamber simultaneously serves as the collision zone for jet angular momentum offset and as the control element for regulating water injection flow rates, eliminating the need for separate vortex suppression devices.
Solution Approach 2:
The flow damper structure is designed to perform multiple functions: it prevents vortex formation during large flow injection, controls water injection flow rates during reactor reflooding, and regulates flow distribution between the large and small flow pipes. This multi-functionality reduces overall system complexity by consolidating several functions into one device.
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 solution allows for easy and secure adjustment of the colliding jet to prevent vortex formation during large flow injection, significantly reducing labor and fabrication costs by allowing adjustments to be made only to the colliding jet controller.
Implementation Method 1
the injected water (a jet) from the large flow pipe 26 collides with the injected water (a jet) from the small flow pipe 27, and angular momenta of the jets are offset
Implementation Method 2
the injected water from this small flow pipe 3 proceeds to the outlet 4 while forming a vortex (a swirling flow) as indicated with an arrow D. Accordingly, the flow resistance is increased by the centrifugal force at this time
Data Source
AI summary
An object of the present invention is to provide an accumulator including a flow damper which is capable of performing a control so that a vortex may not be formed in a vortex chamber at the time of a large flow injection without requiring huge labors and fabrication costs. The flow damper is configured of a colliding jet controller (a bevel or a projection) for controlling a colliding jet composed of a jet from a large flow pipe and a jet from a small flow pipe flowing into a vortex chamber at the time of a large flow injection so that the colliding jet may proceed directly to an outlet without forming a vortex in the vortex chamber. The colliding jet controller is provided at a junction of an inner surface of the small flow pipe and an inner surface of the vortex chamber.