Universal Pipe Coupling Joint for Precise Angle Adjustment
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Solution Overview
Problem
Existing liquid pipe coupling systems face challenges in adjusting precise bending angles in narrow spaces, leading to increased maintenance costs and potential leakage due to low coupling strength and inadequate vibration resistance.
Innovation Solution
A liquid pipe coupling universal joint with a first and second coupling structure featuring curved fitting portions that allow semi-omnidirectional sliding and pivoting, with a specific design that includes a continuous plane on the inner surface and an edge circumference separated from a reference plane by 10-30% of the maximum diameter, enabling wide angle adjustments and enhanced durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If elbow pipes with fixed bent angles are used to connect pipes, then the coupling direction can be adjusted, but the work becomes difficult and cannot be appropriately performed when decentering occurs
Solution Approach 1:
The invention transforms the static fixed-angle elbow pipe into a dynamic adjustable structure. The universal joint allows the pipe to be bent and adjusted to various angles within a range, enabling workers to adapt to different decentering conditions during installation. The joint can be manually positioned and fixed at the required angle, combining the benefits of fixed stability with adjustable flexibility.
2Adaptability or versatility
If bellows pipe is used to adjustably cope with decentering, then coupling direction flexibility is improved, but flow resistance increases due to minute unevenness on inner surface
Solution Approach 1:
The invention uses a dynamic bending mechanism instead of the static corrugated bellows structure. The universal joint allows the pipe to be bent into the required shape during installation, then fixed in position. This eliminates the continuous corrugations of bellows pipes that cause flow resistance, while maintaining the ability to adapt to decentering conditions.
3Adaptability or versatility
If multiple elbow pipes are combined to obtain predetermined curved angle, then angle adjustment is possible, but significant space is necessary around pipe group
Solution Approach 1:
The invention merges multiple fixed-angle elbow pipes into a single universal joint that provides continuous angle adjustment capability. Instead of requiring several separate elbow pipes arranged in a group that occupies significant space, the universal joint achieves the same angular adjustment function in a compact single-component form.
4Adaptability or versatility
If bendable tubular member with limited bending angles is used, then some angle adjustments are possible, but it is difficult to set curved angle to certain angle even by combining various types
Solution Approach 1:
The invention provides continuous dynamic adjustability within a wide angle range, allowing precise positioning at any desired angle. The universal joint can be manually bent and fixed at the exact angle required, unlike discrete elbow pipes that are limited to predetermined angles. This enables precise angle setting without being constrained by manufacturer-specific angle increments.
Data Source
AI summary
A pipe coupling universal joint has a first fitting portion and a second fitting portion. An edge circumference of the first or second fitting portion is separated from a reference plane by a length set to 21 to 23% of the maximum diameter length of the first or second fitting portion on the reference plane in a direction opposite to a side where a straight pipe portion is connected from the reference plane.