Riser Clamp Isolation Element for Load Distribution and Vibration Control
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Solution Overview
Problem
Conventional riser clamps transfer vibrations to the floor and surrounding structures due to inadequate vibration isolation, and existing solutions like loose pads can be mispositioned, leading to reduced effectiveness and potential deformation under high loads.
Innovation Solution
A riser clamp with an isolation element featuring a pad portion and an upstanding reinforcing profile made of stiffer material, which distributes loads over a larger area and provides additional bending resistance, preventing excessive compression and deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a loose vibration isolating pad is placed below the clamp, then vibration isolation is improved, but positioning precision deteriorates leading to misalignment and reduced effectiveness
Solution Approach 1:
The vibration isolating pad is merged with the clamp structure by integrating it into the channel body, eliminating the loose component and ensuring precise, consistent positioning without misalignment during installation or tightening
Solution Approach 2:
The pad acts as an intermediary element between the clamp and the floor, providing vibration isolation while being precisely positioned through integration with the clamp structure rather than being a separate loose component
2Adaptability or versatility
If the passage hole diameter is larger than the riser pipe diameter, then installation flexibility is improved, but clamp flange support length decreases leading to excessive loading and potential failure
Solution Approach 1:
The load distribution is extended from a one-dimensional line contact (clamp flange edge) to a two-dimensional area contact by introducing the channel body that distributes loads over its entire width and length, compensating for the reduced support length
Solution Approach 2:
The clamp structure is segmented into distinct functional components: the semi-circular sections for clamping the pipe, the straight sections for structural support, and the channel body for load distribution and vibration isolation, allowing each to optimize its specific function
3Force
If high compressive stress is applied to retain the riser, then clamp holding force is improved, but vibration isolation effectiveness deteriorates due to excessive compression of the isolating member
Solution Approach 1:
The load distribution transitions from concentrated line contact to distributed area contact through the channel body, reducing compressive stress intensity while maintaining total holding force, thereby preserving vibration isolation effectiveness
Solution Approach 2:
The isolation element combines different materials with complementary properties: the channel body provides structural strength and load distribution, while the vibration isolating material (such as rubber or elastomer) provides vibration damping, creating a composite structure that handles both high loads and vibration isolation
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 solution effectively isolates vibrations by distributing loads and preventing deformation, ensuring reliable vibration isolation and secure clamp positioning.
Implementation Method 1
a profile of vibration isolating material comprising a pad portion, which pad portion, in use, is located below the corresponding clamp flange for resiliently supporting it
Implementation Method 2
pad portion, which pad portion, in use, is located below the corresponding clamp flange for resiliently supporting it
Data Source
Figure 1
Figure 2~3
AI summary
An isolation element for a riser clamp has two opposed clamp halves made of metal strip. Each of said clamp halves has a semi-circular section placed opposite each other against a riser pipe extending through a passage hole in a floor. The clamp halves have at the ends of its semi-circular section outwardly extending clamp flanges to be tightened towards the corresponding opposing clamp flanges of the other clamp half. The riser clamp is in use supported from beneath by a support structure e.g. a floor. The isolation element is adapted to be provided on at least one of two opposing damp flanges and to extend only along said at least one clamp flange. The isolation element includes a profile of vibration isolating material comprising a pad portion, which pad portion in use is located below the corresponding clamp flange for resiliency supporting it, and further comprising at least one upstanding portion extending along the corresponding clamp flange, wherein said upstanding portion is attachable to the corresponding clamp flange. The isolation element furthermore includes a reinforcing profile made of a stiffer material than the vibration isolating material. The reinforcing profile has an angular shape comprising a web and a first flange which are joined at an angle portion, wherein the first flange of the reinforcing profile is associated with the pad portion and wherein the web is associated with the upstanding portion of the isolation element.