High and low temperature sealing structure for high-pressure gas-liquid cavity
A high-low temperature, high-pressure gas technology, applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problems of high and low temperature sealing of high-pressure gas-liquid cavity, achieve high and low temperature sealing, solve technical problems, operability strong effect
Inactive Publication Date: 2012-10-17
NORTHWEST INST OF NUCLEAR TECH
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[0005] The purpose of the present invention is: in order to solve the problem that the existing sealing technology cannot meet the high and low temperature sealing problem of the high-pressure gas-liquid cavity, the present invention proposes a structure for high-low temperature sealing of the high-pressure gas-liquid cavity
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[0010] This embodiment aims at the high-low temperature sealing problem of a typical high-pressure gas-liquid cavity—the high-low temperature gas-liquid sealing problem of the gas-liquid cylinder device, and provides its sealing structure.
[0011] The gas-liquid cavity partition of the device divides the inner cavity of the outer cylinder into a high-pressure gas cavity less than or equal to 6Mpa and a low-pressure liquid cavity greater than 2atm and less than 6atm, and the entire working environment is multiple cycles under the condition of -40°C to +50°C High and low temperature environment, therefore, it is necessary to simultaneously realize the high and low temperature sealing of the high pressure gas chamber and the low pressure liquid chamber through an effective sealing structure.
[0012] In the high and low temperature sealing structure in this embodiment, the gas-liquid chamber partition 2 divides the inner cavity of the metal outer cylinder 1 into a high-pressure g...
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The invention provides a high and low temperature sealing structure used for a high-pressure gas-liquid cavity, and belongs to the technical field of mechanical seal. According to the structure, the inner cavity of a metal outer cylinder 1 is divided into a high-pressure gas cavity and a low-pressure liquid cavity by a gas-liquid cavity partition plate 2; an annular groove is formed at the end, close to the high-pressure gas cavity, of the gas-liquid cavity partition plate 2, and an O-shaped silicon-silicon rubber sealing ring 3 of the gas cavity is arranged in the annular groove; and an annular groove is formed at the end, close to the low-pressure liquid cavity, of the gas-liquid cavity partition plate 2, and an O-shaped nitrile rubber sealing ring of the liquid cavity is arranged in the annular groove. The sealing structure provided by the invention is applied in a gas-liquid cylinder device, and also can be popularized and applied to the structures with similar sealing requirements. The invention has the characteristics that the sealing structure is simple, reliable and high in operability, and is examined and checked repeatedly at the temperature of between -40 DEG C and +50 DEG C; and simultaneously, high and low temperature seal in a high-pressure gas cavity is realized.
Description
Technical field [0001] The invention proposes a high-low temperature sealing structure for a high-pressure gas-liquid cavity, which has been applied in the high-low temperature sealing of a gas-liquid cylinder device, and belongs to the technical field of mechanical sealing. Background technique [0002] Mechanical seals first appeared in the form of patents in the UK in 1885, and began to be used in 1900. The simple end face mechanical seal that appeared for the first time solved the problem of shaft seal in the machine manufacturing industry. Compared with the usual stuffing seals, mechanical seals are obviously advanced in terms of function and composition. However, due to the lack of suitable materials and processing machine tools at that time, despite the many advantages of this sealing structure, it still did not play its role. Until 1920, due to the emergence of new technology and new materials, after improving the reliability and life of use and reducing the manufa...
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IPC IPC(8): F16J15/10
Inventor 关锦清樊亚军陈昌华刘锋邵贤忠万可友朱四桃郑磊周金山王俊杰
Owner NORTHWEST INST OF NUCLEAR TECH