Tube sheet seal structure
By employing a tube sheet sealing structure in the heat exchanger, and utilizing the raised structure to form multidirectional flow branches and turbulence, the problem of fluid leakage under high temperature and high pressure environments is solved, achieving efficient sealing and simplified disassembly.
CN120684930BActive Publication Date: 2026-07-10TIANHUA INSTITUTE OF CHEMICAL MACHINERY AND AUTOMATION CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- TIANHUA INSTITUTE OF CHEMICAL MACHINERY AND AUTOMATION CO LTD
- Filing Date
- 2025-05-12
- Publication Date
- 2026-07-10
AI Technical Summary
Technical Problem
Existing heat exchanger sealing structures are not sufficiently leak-proof under high temperature and high pressure conditions, which can easily lead to fluid leakage, and disassembly is also highly complex.
Method used
The tube sheet sealing structure is adopted. By setting the first welding ring and sealing components between the flange and the tube sheet, the raised structure forms multi-directional flow branches and turbulence, which reduces fluid pressure. The disassembly process is simplified by the design of the semi-circular ring or quarter-circular ring.
Benefits of technology
It effectively prevents fluid leakage, reduces disassembly complexity, enhances sealing performance, and improves production efficiency.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN120684930B_ABST
Abstract
The application discloses a tube sheet sealing structure and relates to the technical field of heat exchanger sealing, aiming to solve the problem of fluid leakage caused by insufficient sealing performance of the current sealing structure. The tube sheet sealing structure comprises two flanges, a tube sheet, two first welding rings and a sealing component. The two flanges are oppositely arranged and form a clamping space through a connecting piece. The two first welding rings are coaxially and sealingly connected to the opposite end faces of the two flanges, respectively. The first welding ring is coaxially sleeved on the outer periphery of the tube sheet. The inner ring surface of the first welding ring is spaced apart along the circumferential direction and the axial direction of the tube sheet and is provided with a plurality of protrusions extending along the radial direction of the tube sheet. The inner ring surface of the first welding ring is matched with the outer peripheral surface of the tube sheet through the protrusions. The sealing component is sealingly connected with the first welding ring and the tube sheet. The sealing component, the first welding ring and the tube sheet enclose a sealing cavity. The sealing cavity is communicated with the gap between the first welding ring and the tube sheet, and is used for preventing fluid leakage.
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