Slip Ring Seal Carrier With Play for Stress-Free Torque Transfer
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Solution Overview
Problem
Existing mechanical seal arrangements face issues with undesirable stresses due to press-fit or thermal shrink connections, leading to reduced service life and increased production rejects, and lack a modular system for easy replacement and adaptation to various applications.
Innovation Solution
A mechanical seal arrangement with a rotating and stationary seal ring, where the rotating seal ring is inserted with play into the seal ring carrier, using a driver element with a cylindrical base and square contact area to transmit torque without introducing stresses, and featuring interchangeable secondary seals for different applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If press-fit connection or thermal shrink connection is used to connect the rotating seal ring to the seal ring carrier, then the connection strength is improved, but undesirable stresses are introduced into the rotating seal ring leading to reduced service life and production rejects
Solution Approach 1:
The patent removes the rotating seal ring from the seal ring carrier, eliminating the press-fit or thermal shrink connections that cause harmful stresses. The rotating seal ring is no longer attached to the carrier but instead floats freely within it, extracting the problematic connection mechanism from the system.
Solution Approach 2:
The patent introduces a driver element as an intermediary between the seal ring carrier and the rotating seal ring. This driver element transmits torque without creating direct stress-bearing connections between the seal ring and carrier, allowing force transmission without harmful stresses.
2Power
If the rotating seal ring is firmly connected to the seal ring carrier, then torque transmission is reliable, but the flatness of the sliding surface is adversely affected and service life is reduced
Solution Approach 1:
The driver element serves as a mediator that transmits torque from the seal ring carrier to the rotating seal ring without requiring firm mechanical connection. This intermediary approach maintains reliable power transmission while preserving the flatness of the sliding surface by eliminating stress-induced deformation.
Solution Approach 2:
The patent segments the torque transmission function from the seal ring connection. Instead of relying on a single firm connection between the seal ring and carrier, the system separates these functions: the carrier holds the seal ring with play, while the driver element independently handles torque transmission.
3Adaptability or versatility
If a modular system with interchangeable seal rings and secondary seals is implemented, then adaptability to various applications is improved, but the device complexity increases
Solution Approach 1:
The patent segments the mechanical seal into independent, interchangeable components: the rotating seal ring, secondary seals, and driver element can all be independently replaced. This segmentation enables modularity and adaptability while keeping each individual component simple in design.
Solution Approach 2:
The seal ring carrier is designed as a universal component that can accommodate different types of rotating seal rings and secondary seals through standardized interfaces. This universality allows one carrier design to serve multiple applications, reducing overall system complexity despite the variety of interchangeable parts.
Data Source
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AI summary
The invention relates to a slip ring sealing arrangement, comprising: a slip ring seal (10) having a rotating slip ring (2) and a stationary slip ring (3) which between them define a sealing gap (4); a slip ring carrier (5) which is arranged on the rotating slip ring (2); and at least one driver element (6) which is arranged between the rotating slip ring (2) and the slip ring carrier (5) and is designed to transmit torque from the slip ring carrier (5) to the rotating slip ring (2), wherein the rotating slip ring (2) is inserted in the slip ring carrier (5) with play, wherein the rotating slip ring (2) has a first cutout (20), wherein the slip ring carrier (5) has a second cutout (50), and wherein the driver element (6) is inserted in the first cutout (20) with play and in the second cutout (50) with play.