Screw rod compressor floating ring sealing device and sealing air supplying system
A screw compressor, floating ring sealing technology, applied in the sealing device of piston pump, mechanical equipment, machine/engine, etc., can solve the problems of reducing compressor life, unsatisfactory sealing effect, increasing shaft wear, etc., to improve reliability. performance, improve lifespan, and reduce friction
Inactive Publication Date: 2017-08-18
DONGYING HISCIEN SEALING TECH
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Problems solved by technology
At present, the sealing effect between the compression chamber and the bearing box is not ideal, and gas blow-by often occurs, which leads to the emulsification of the lubricating oil of the bearing, increases the wear of the shaft, and reduces the life of the compressor.
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[0029] 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.
[0030] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "inner", "upper", "lower", "left", "right" etc. is based on the positional relationship shown in the drawings, only It is for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only...
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The invention provides a floating ring sealing device and a sealing gas supply system for a screw compressor. The floating ring sealing device includes a sealing box fixed in a cavity, and there is an axial side-by-side arrangement between the sealing box and the screw. The floating ring seal and the labyrinth seal, the sealing gas used to block the process medium gas passes through the floating ring seal and reaches between the floating ring seal and the screw rod, and the sealing gas used to block the process medium gas passes through the labyrinth seal and reaches the Barrier gas between the screws to keep out bearing lubricants. This makes full use of the advantages of the floating ring seal and the labyrinth seal, which are used to seal gas and liquid respectively, which is beneficial to increase the effective barrier between process medium gas and bearing lubricating oil, and avoids the movement between process medium gas and lubricating oil. Improve the reliability of screw compressor seals.
Description
technical field [0001] The invention belongs to the technical field of sealing, and in particular relates to a floating ring sealing device for a screw compressor and a sealing gas supply system of the screw compressor with the floating ring seal. Background technique [0002] Floating ring seal is a traditional sealing device, which plays an important role in modern sealing technology. The floating ring seal is a combination of a radial gap seal and an axial end face seal, a combination of a non-contact seal and a contact seal, and a hybrid seal combining a hydrostatic seal and a hydrodynamic seal. It can block both liquid and gas. [0003] In the field of petrochemical industry, the compression cavity of the screw compressor must be separated from the bearing box, otherwise the process gas will enter the bearing lubricating oil and pollute the lubricating oil, causing damage to the bearings and transmission gears. Therefore, the compression cavity and the bearing box must...
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IPC IPC(8): F04C27/00
CPCF04C27/007
Inventor 郝木明郭崇斌任宝杰高赛李洪明李小卒
Owner DONGYING HISCIEN SEALING TECH