Self-tightening sealing device for medium
A sealing device and self-tightening technology, which is applied in the direction of engine sealing, flange connection, pipe/pipe joint/pipe fitting, etc., can solve the problems of inconsistent axial deformation, seal leakage, temperature inconsistency, etc., and achieve continuous and effective sealing effect , tight sealing and uniform force effect
Pending Publication Date: 2021-04-13
SUZHOU BMC SEALING TECH CO LTD
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Problems solved by technology
In traditional sealing devices, gaskets such as wound gaskets and coated gaskets are often used to seal the flanges. During the working process, due to the objective temperature difference between the processes, the temperature of the flanges corresponding to the multiple passes from the inlet to the outlet is inconsistent. The internal thermal stress of the flange will be formed, and the axial deformation of each node in the circumferential direction of the flange will be inconsistent. prone to leaks
Method used
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[0025] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0026] The shell-and-tube multi-pass heat exchanger is an application scenario of the self-tightening sealing device of the medium. The structural characteristics of the self-tightening heat exchange device of the medium will be described in detail below by taking the shell-and-tube multi-pass heat exchanger as an example.
[0027] Refer to a medium self-tightening sealing device shown in the drawings, including the first part 1 and the second part 2 to be sealed and connected, and the seal used for axial sealing between the first part 1 and the second part 2 Assembly 3, the first component 1 has a first sealing end surface, the second component 2 has a second sealing end surface, the sealing assembly 3 is arranged between the first sealing end surface and the second sealing end surface in the axial direction, the firs...
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The invention discloses a self-tightening sealing device for a medium. The sealing device comprises a first component, a second component with a medium cavity and a sealing assembly used for axial sealing connection between the first component and the second component; the medium cavity comprises a plurality of tube boxes which are arranged on the second component and separated from one another; a plurality of heat exchange pipelines for communicating two adjacent tube boxes are arranged on the first component; the sealing assembly comprises an inner supporting ring, an outer supporting ring and a sealing ring arranged between the inner supporting ring and the outer supporting ring; the sealing ring is provided with a hollow inner cavity; and a circular-ring-shaped spring is arranged in the hollow inner cavity. A medium introducing hole is formed in the inner supporting ring, and a hollow inner cavity of the sealing ring communicates with a certain tube box, so that the temperatures of all positions in the circumferential direction of the sealing ring are the same. According to the self-tightening sealing device for the medium, through the self-tightening function of the sealing assembly, axial discordant deformation caused by different temperatures can be compensated for, and it is guaranteed that sealing is continuous and effective.
Description
technical field [0001] The invention relates to a medium self-tightening sealing device. Background technique [0002] In nuclear power, petrochemical and other fields, heat exchangers are commonly used equipment, and the sealing performance of the sealing device has an important impact on the working efficiency of the equipment. In traditional sealing devices, gaskets such as wound gaskets and coated gaskets are often used to seal the flanges. During the working process, due to the objective temperature difference between the processes, the temperature of the flanges corresponding to the multiple passes from the inlet to the outlet is inconsistent. The internal thermal stress of the flange will be formed, and the axial deformation of each node in the circumferential direction of the flange will be inconsistent. Leaks are prone to occur. Contents of the invention [0003] The purpose of the present invention is to provide a medium self-tightening sealing device with bett...
Claims
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IPC IPC(8): F16J15/48F16J15/06F16L23/18F16L23/24F28F9/12
CPCF16J15/061F16J15/48F16L23/18F16L23/24F28F9/12
Inventor 马志刚韩嘉兴
Owner SUZHOU BMC SEALING TECH CO LTD