Temperature self-adaptive carbon ring seal
A carbon ring seal, self-adaptive technology, applied in the direction of engine seals, mechanical equipment, engine components, etc., can solve the problem of large leakage of carbon ring seals, and achieve the effects of reduced leakage, large promotion value, and simple and reasonable structure
Pending Publication Date: 2022-07-05
CHENGDU YITONG SEAL
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Problems solved by technology
[0006] The technical problem to be solved by the present invention is to improve the sealing performance of carbon ring seals under low temperature conditions, and the purpose is to provide a temperature adaptive carbon ring seal to solve the problem of large leakage of carbon ring seals under low temperature conditions for high temperature equipment question
Method used
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Embodiment
[0033] This embodiment provides a temperature-adaptive carbon ring seal, such as Figures 1 to 4 shown,
[0034] A temperature-adaptive carbon ring seal of the present invention is characterized in that it includes a carbon ring body, and the carbon ring body includes a plurality of fan-shaped annular lobes 1, and each of the annular lobes 1 is connected end to end to form a ring body; Between the opposite surfaces of the annulus 1, a lap joint mechanism for circumferentially limiting and / or axially confining the annulus 1 is provided, and each outer side wall of the annulus 1 is provided with a lap joint for the annular lobe 1. Hooping mechanism 2 for radial and circumferential limiting; grooves are provided on the outer wall adjacent to the lap joint mechanism, and / or the end face of the adjacent lap joint mechanism is provided with a connection with the carbon ring body The grooves and / or the concave cavities of the adjacent overlapping mechanisms are provided with strip-s...
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The invention discloses a temperature self-adaptive carbon ring seal, which is characterized in that a strip-shaped metal device is bridged in a groove and / or a concave cavity of a lapping mechanism of adjacent ring sections, so that the strip-shaped metal device expands and contracts along with the temperature when the temperature of fluid changes; further, the inner hole size of the carbon ring seal is self-adaptively, synchronously and radially expanded or shrunk along with the rotating shaft (or the shaft sleeve) along with the temperature change, and a gap between the carbon ring seal and the rotating shaft (or the shaft sleeve) is always kept in an initial gap under various working condition temperatures, so that an axial channel is effectively prevented from being formed after the seal is expanded; and the leakage rate of the seal under the non-rated working condition can be reduced. The clothes peg production mold is simple and reasonable in structure and novel in design, can be put into production only by slightly modifying an existing clothes peg production mold, is convenient to quickly put into production, and has great popularization value and wide application prospects.
Description
technical field [0001] The invention relates to the field of mechanical seals, in particular to a temperature-adaptive carbon ring seal. Background technique [0002] Rotating machinery is the core component of the process industry and the key to ensuring safe and reliable production in the process industry. In the production line of petrochemical and other process industries, the failure of rotating machinery causes the process industry to stop production and downtime for maintenance is the most common problem in the production line, and it is also the biggest obstacle to the long-term safe and stable operation of the process industry. One of the most obvious manifestations of rotating machinery failure is the leakage problem of the sealing device. Seal leakage not only greatly affects the efficiency and service life of mechanical devices, but for the process industry, the leakage of toxic, harmful, flammable and explosive dangerous media often causes serious environmental...
Claims
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IPC IPC(8): F16J15/30
CPCF16J15/30F16J15/164
Inventor 周忠学唐大全孟秀国
Owner CHENGDU YITONG SEAL