Hydraulic Hose Connection With Swelling Seal Element
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Hydraulic hose connections in high-pressure applications often experience leaks due to material settling and temperature influences, leading to gaps and subsequent oil leaks, which are not effectively addressed by existing technologies.
Innovation Solution
A hydraulic hose connection design featuring a swelling element, such as an O-ring or annular seal, placed between the connecting nipple and the hose, which swells in response to hydraulic fluid, blocking leaks and maintaining a seal even under load and temperature changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional fitting is pressed onto the hydraulic hose to clamp it against the connecting nipple, then the connection is mechanically secured, but leaks occur due to material settling and temperature influences over time
Solution Approach 1:
The patent applies parameter changes by utilizing the chemical property of the swelling element to change its volume when exposed to hydraulic fluid. The element transitions from a compressed state during installation to an expanded state during operation, creating a self-adjusting seal that compensates for material settling and temperature variations, thereby maintaining long-term connection tightness
Solution Approach 2:
The swelling element performs self-service by automatically detecting and sealing leaks without external intervention. When hydraulic fluid contacts the element, it autonomously swells to block gaps formed by hose settlement or thermal expansion/contraction, providing continuous self-healing of the seal throughout the connection's operational life
2Stability of the object's composition
If the hydraulic hose is firmly clamped to prevent settling, then connection stability improves, but the hose cannot accommodate temperature-induced expansion and contraction
Solution Approach 1:
The patent applies dynamics by introducing a swelling element that can dynamically adjust its sealing characteristics in response to changing conditions. The element transitions from a static compressed state during installation to a dynamic state where it continuously adapts its volume and sealing pressure based on temperature changes and hose settlement, maintaining both stability and adaptability
Solution Approach 2:
The swelling element provides beforehand cushioning by being pre-positioned in the connecting nipple to anticipate and prevent leaks. During normal operation, it maintains a ready state that allows it to rapidly respond to and cushion against the effects of temperature variations and material settling before they can cause leaks
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 swelling element effectively prevents hydraulic fluid escape and contamination by increasing its volume to block gaps, ensuring a permanent seal even under high pressures and adverse conditions, thus maintaining connection integrity.
Implementation Method 1
the swelling element consists of a material which is not resistant to the hydraulic fluid at least to the extent that it swells under the influence of the hydraulic fluid. During swelling, the hydraulic fluid penetrates into the matrix of the swelling element
Data Source
AI summary
A hydraulic connection includes a connecting nipple, preferably of steel or of another metal, whereby, on the nipple's tube-shaped extension, a hydraulic hose is held by compression by means of a fitting. A swelling element is arranged between the extension and the hydraulic hose, the element being swellable in the hydraulic fluid. If hydraulic fluid were to advance through to the swelling element, the element will swell and block the path to more hydraulic fluid. Furthermore, by swelling, the element deforms the hydraulic hose in a radially outward direction. In this region, the hydraulic hose is held by a fitting in the form of a metal sleeve so that the hose may not be displaced. In this manner, the force of pressure on the hydraulic hose is increased in an annular zone.