ROLLER-VANE COMPRESSOR WITH SHAFT END FACE SEAL AND METHOD OF ITS RELIEVING FROM AXIAL FORCES

• Main Authors: VDOVIN PETR IVANOVICH, BELJAEV VJACHESLAV EVGEN'EVICH, KOSOJ ALEKSANDR SEMENOVICH
• Format: Patent
• Language: English; Russian
• Published: 20.06.2007
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS; WEAPONS

FIELD: mechanical engineering; rotary machines; compressors. ^ SUBSTANCE: proposed roller-vane compressor has housing with working medium inlet and outlet channels, rotor and rollers-separators placed in housing to form spaces between rotor, rollers-separators and housing and supports and sealing units. Each sealing unit contains high-pressure stage, low-pressure stage and non-contact sealing stage. Low-pressure stage communicates with atmosphere, and high - pressure stage through additional channel made in housing communicates with one of spaces formed by rotor, rollers-separators and housing, and non-contact sealing stage is provided with ring-ridge with grooves. According to proposed method, to relieve rotor of roller-vane compressor from axial forces, gas is fed from high pressure space to stage of high pressure of seal unit and is directed through non-contact seal to low-pressure space from which it let out to provided pressure in low-pressure space within 0.02-0.05 atm. gauge. ^ EFFECT: reliable sealing of compressor housing along output shaft, effective of rotor from axial forces. ^ 12 cl, 8 dwg