Segmented seal
By using a combined structure of a base ring and a resin ring in the segmented seal, the thermal expansion characteristics of different materials are used to solve the problem of large changes in the temperature change time gap of the sealing ring, and the stable sealing effect in a wide temperature range is achieved.
CN119677979APending Publication Date: 2025-03-21EAGLE INDS +1
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Patent Information
- Application Number
- CN202380059064.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2022-08-23
- Filing Date
- 2023-08-21
- Publication Date
- 2025-03-21
AI Technical Summary
Technical Problem
When the temperature of the existing segmented seals changes, the thermal expansion difference of the sealing ring causes large changes in the annular gap, affecting the sealing performance.
Method used
The composite structure of the base ring and the resin ring is adopted. The base ring is composed of carbon divided bodies, the resin ring is composed of materials such as PTFE, and has a high thermal expansion coefficient. The base ring plays a sealing function in a high temperature environment, and the resin ring plays a sealing function in a low temperature environment.
Benefits of technology
Effectively suppress changes in the annular gap in a wide temperature range, ensuring the stability and reliability of the sealing function.
✦ Generated by Eureka AI based on patent content.
Abstract
Provided is a segmented seal capable of exhibiting a sealing function by suppressing changes in an annular gap in a wide temperature range. A segmented seal (1A) for sealing a space between a housing (2) and a rotating shaft (3) inserted through the housing (2), the segmented seal (1A) being disposed between the housing (2) and the rotating shaft (3) in a state in which rotation is restricted, the segmented seal (1A) being provided with: a base ring (10) which is fitted over the rotating shaft (3) and which is composed of divided bodies (12) divided into a plurality in the circumferential direction; and a resin ring (11) which is arranged so as to be aligned with the base ring (10) in the axial direction, at least a portion of the base ring (10) is arranged on the high-pressure side in the axial direction of the resin ring (11), and the thermal expansion coefficient of the resin ring (11) is higher than that of the base ring (10).
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