A shaft end sealing device and fluid conveying equipment
A technology of shaft end sealing and sealing end, which is applied in the field of shaft end sealing device and fluid conveying equipment, can solve the problems such as poor cooling effect of flushing liquid, and achieve the effect of improving cooling effect
Active Publication Date: 2017-03-22
青岛海森流体机械工程研究院有限公司 +2
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- Application Information
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Problems solved by technology
[0004] The invention provides a shaft end sealing device, in order to solve the problem of poor cooling effect of the flushing liquid in the prior art, and improve the sealing performance and service life
Method used
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[0041] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.
[0042] In the description of the present invention, it should be noted that the terms are defined: the direction close to the axis of the shaft end sealing device is "inner", the direction away from the axis of the shaft end sealing device is "outer", and the term "left" , "right" and other indicated orientations or positional relationships are based on the positional relationship shown in the drawings; the terms are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, Constructed and operative in a particular orienta...
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The invention provides a shaft end sealing device and fluid conveying equipment. The shaft end sealing device comprises a moving ring and a static ring, and is further provided with a gland used for fixing the static ring, and a hold-down ring, wherein the hold-down ring is located at the inner side of the gland; an annular flushing fluid cavity is encircled among the gland, the hold-down ring and the static ring; a flushing hole communicated with the flushing fluid cavity is formed in the gland; a static ring flushing hole communicated with the flushing fluid cavity is formed in the static ring; the static ring flushing hole drains a flushing fluid in the flushing fluid cavity to the outer sides of the sealing end surfaces of the moving ring and the static ring. By forming the flushing fluid cavity, the flushing fluid cavity can be fully filled with the flushing fluid through the flushing hole, and the end surface of the static ring encircling the flushing fluid cavity is always soaked by the flushing fluid, so that the heat transferred from the sealing end surfaces of the moving ring and the static ring is rapidly reduced, and a cooling effect for the moving ring and the static ring is improved; and moreover, the flushing fluid flows through the interior of the static ring to take away heat at the static ring flushing hole.
Description
technical field [0001] The invention belongs to the technical field of mechanical seals, and in particular relates to a shaft end sealing device and fluid conveying equipment with the shaft end sealing device. Background technique [0002] Fluid conveying equipment such as pumps and compressors in the petrochemical industry often use single-face contact mechanical seals as shaft end seals. The fluid conveying equipment seals the fluid medium through the shaft end sealing device, and the sealed fluid medium has a certain sealing pressure. The shaft end sealing device mainly relies on the tight fit of the sealing end faces of the dynamic and static rings to achieve sealing. The moving ring rotates with the rotating shaft, and the static ring is fixed with the housing. Frictional heat. [0003] In order to cool the sealing end faces of the dynamic and static rings, the dynamic and static rings are cooled by injecting flushing liquid, and the self-flushing liquid from the pump...
Claims
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IPC IPC(8): F16J15/30F16J15/16
Inventor 郝木明李勇凡任宝杰李振涛王选盈杨文静
Owner 青岛海森流体机械工程研究院有限公司