A non-contact sealing adjustable device for rotating machinery
A kind of rotating machinery, non-contact technology, applied in the direction of engine sealing, mechanical equipment, engine components, etc., can solve the problems of high processing cost, abnormal vibration of mechanical system, lack of special experimental devices, etc., to achieve good sealing performance, strong practicability , the effect of easy installation
Active Publication Date: 2018-01-30
AECC SHENYANG ENGINE RES INST
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Problems solved by technology
Due to the pulsating pressure of the rotating fluid in the seal chamber of the rotating machine on the rotor and the stator, it will cause abnormal vibrations in the entire mechanical system, and the frequency component of the abnormal vibration cannot be eliminated by adjusting the structure of the supporting bearing of the rotating machine, which seriously affects the rotating machine. full power output
[0003] In the design and research process of non-contact seals for rotating machinery, a large number of experiments are required to conduct seal dynamics and leakage tests under different parameters, and the processing costs of different non-contact seal structures for different seal gaps and circumferential flow velocities are high. And it is very time-consuming to adjust, and the special experimental device is lacking
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[0029] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below in conjunction with the drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the invention. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. Embodiments of the present invention will be described in detail below ...
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The invention discloses an adjustable device of a non-contact seal of a rotary machine, and belongs to the technical field of seals of rotary machines. A split structure is adopted, and the adjustable device is composed of four quarter-ring-shaped seal blocks. Each seal block comprises jackscrews, countersunk head screws, a lock sheet, a seal support, air guide pipes, a jackscrew supporting plate, disc springs, first O-type seal rings, a jackscrew top plate, a seal sliding block, second O-type seal rings and seal strips. The seal sliding blocks are embedded in the seal supports and sealed through the first O-type seal rings, the disc springs are arranged at the joints, and floating adjustment is achieved. The jackscrew supporting plates are fixed to cross beams through the countersunk head screws, the jackscrews penetrate the jackscrew supporting plates to adjust the mounting clearances of the seal blocks, and the air guide pipes communicate with air guide holes in the seal sliding blocks and are sealed through the second O-type seal rings. The four quarter-ring-shaped seal blocks and a stator are connected into a whole through mounting and fixing parts, and the seal blocks are sealed through the first O-type seal rings and the seal strips. The adjustable device is convenient to mount and high in practicality and has good seal performance.
Description
technical field [0001] The invention belongs to the technical field of rotary mechanical seals, and in particular relates to a non-contact seal adjustable device for rotary machines. Background technique [0002] Non-contact seals are widely used in rotating machinery to limit the leakage of gas and liquid, and their dynamic characteristics and seal leakage are the technical focus of non-contact seal design. Due to the pulsating pressure of the rotating fluid in the seal chamber of the rotating machine on the rotor and the stator, it will cause abnormal vibrations in the entire mechanical system, and the frequency component of the abnormal vibration cannot be eliminated by adjusting the structure of the supporting bearing of the rotating machine, which seriously affects the rotating machine. Full power output. [0003] In the design and research process of non-contact seals for rotating machinery, a large number of experiments are required to conduct seal dynamics and leaka...
Claims
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IPC IPC(8): F16J15/40
CPCF16J15/40
Inventor 马文生黄海冯国全李忠刚
Owner AECC SHENYANG ENGINE RES INST