End face sealing assembly
An end face sealing and assembly technology, applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problems of failure and high cost of shallow groove processing, and achieve the effect of improving bearing capacity, reducing wear and protecting end faces
Active Publication Date: 2022-08-05
TSINGHUA UNIV
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Problems solved by technology
However, the dynamic pressure grooves are directional, and the rotation direction is uncertain, and even at low speeds, the advantages of the dynamic pressure grooves will be invalid. At the same time, the processing cost of shallow grooves is also relatively high.
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[0038] The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, only used to explain the present invention, and should not be construed as a limitation of the present invention.
[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " Rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. The relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplif...
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The invention discloses an end face sealing assembly, which comprises a first sealing ring, a second sealing ring, a sealing ring, a first sealing ring and a second sealing ring, wherein a first end face is formed on the first sealing ring; the second sealing ring is provided with a second end face right opposite to the first end face, and a sealing gap extending from the high-pressure side to the low-pressure side is formed between the first end face and the second end face. Wherein at least one of the first end face and the second end face is provided with a circumferential groove, at least one of the first end face and the second end face is provided with a radial groove, and the circumferential groove and the radial groove are both located between the high-pressure side and the low-pressure side so as to control the phase change position of fluid in the sealing gap. And the radial groove is formed in the low-pressure side of the circumferential groove. According to the end face sealing assembly, the potential position where phase change occurs can be effectively controlled, the phase change occurs in a smaller area, meanwhile, the actual end face specific pressure of the seal is improved, and the bearing capacity of the seal is improved.
Description
technical field [0001] The invention relates to the technical field of mechanical seals, in particular to an end face seal assembly. Background technique [0002] The mechanical seal end face structure is the basic key component in various rotary fluid machinery. The mechanical seal is a device that keeps the sealing ring in contact and relatively slides under the combined action of the end face fluid pressure perpendicular to the rotation axis, the compensation element and the auxiliary seal, and constitutes a device with less fluid leakage. Common mechanical end face seals have relatively mature sealing face and structural design for the sealing of gaseous media and liquid media. With the development of sealing technology and the extension of sealing application medium, there are still deficiencies and blanks in the relevant design for the medium application that may undergo phase change due to the difference in pressure and temperature on both sides of the seal. This ki...
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IPC IPC(8): F16J15/3284F16J15/3268
CPCF16J15/3284F16J15/3268
Inventor 黄伟峰高文彬冉瑶刘莹刘向锋高志王玉明
Owner TSINGHUA UNIV