Split Mechanical Seal Cover for Easy Ring Maintenance
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Solution Overview
Problem
Traditional mechanical seal devices with a bellows-type structure face difficulties during maintenance due to the large and heavy seal cover, which complicates handling and replacement of seal rings, especially in large equipment setups.
Innovation Solution
A mechanical seal device with a three-part split seal cover structure, comprising an inner-diameter-side, outer-diameter-side, and axial-direction seal cover, where the outer-diameter-side seal cover is detachably fixed to the axial-direction seal cover, and the inner-diameter-side seal cover has a flange for secure connection, allowing the seal ring to be removed as a single unit for easier maintenance, without the need for extensive disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the seal cover is made as a single integrated structure to ensure sealing integrity, then the sealing reliability is improved, but the weight and size of the seal cover increases, making maintenance difficult
Solution Approach 1:
The seal cover is divided into multiple segments: a stationary seal cover fixed to the equipment body, and a movable seal cover that can be detached. This segmentation allows the movable seal cover to be removed independently for maintenance while the stationary portion remains in place, resolving the contradiction between maintaining sealing integrity and enabling easy maintenance access.
2Area of stationary object
If the seal cover is made large and heavy to cover the seal ring completely, then the sealing coverage is improved, but the handling difficulty during maintenance increases
Solution Approach 1:
The seal cover structure is segmented into a stationary portion that provides comprehensive sealing coverage when assembled, and a movable portion that can be detached for maintenance. This allows the seal cover to have large coverage area when needed while being easily removable when maintenance is required.
Solution Approach 2:
The seal cover transitions from a static, fixed structure to a dynamic structure where the movable seal cover can be detached and reattached. This dynamic capability allows the seal cover to provide complete coverage during operation while enabling easy removal and handling during maintenance activities.
3Strength
If the seal cover is made heavy to ensure structural strength, then the structural integrity is improved, but the handling difficulty during maintenance increases
Solution Approach 1:
The seal cover is segmented into stationary and movable portions. The stationary seal cover maintains the required structural strength for sealing integrity, while the movable seal cover can be designed with reduced weight for easy handling during maintenance, as it only needs to provide sealing coverage when assembled.
Solution Approach 2:
The seal cover structure transitions from a permanently heavy fixed structure to a dynamic system where the movable portion can be removed. This allows the system to have high structural strength when assembled while enabling easy handling during maintenance when the movable portion is detached.
Data Source
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AI summary
Provide a mechanical seal device that achieves excellent ease of handling the seal ring or other seal element during maintenance. A mechanical seal device having a mating ring (31) that rotates with a rotating shaft (1), as well as a seal ring (33) that slidably contacts the mating ring (31), so as to seal between the rotating shaft (1) and a seal cover (5) fixed to an equipment main body (2), wherein the seal cover (5) is a split structure comprising at least an inner-diameter-side seal cover (8) and an outer-diameter-side seal cover (7), the inner-diameter-side seal cover (8) is detachably connected to the outer-diameter-side seal cover (7), and the seal ring (33) is connected to the inner-diameter-side seal cover (33) in a securely following manner.