SU989154A1 - Axial compressor - Google Patents

Description

(54) AXIAL COMPRESSOR

one

This invention relates to a compressor industry, in particular to axial compressors.

Known axial compressor, comprising a housing and an impeller located in it with blades, with a protrusion of annular shape l installed on the housing in front of the working vanes.

However, such an embodiment of the compressor leads to high hydraulic losses caused by the flow around the protrusion of the annular shape.

An axial compressor is also known, comprising a housing with an annular groove and an impeller located therein with blades, the peripheral part of which is located in the groove 2}

However, even with such an axial compressor, hydraulic pressures caused by intense non-productive flow mixing

the peripheral part of the blades, size. in the annular groove remain relatively high.

The aim of the invention is to reduce the hydraulic losses of the compressor.

This goal is achieved by the fact that in an axial compressor an annular groove is located above the inlet part of the blades.

ten

The drawing shows the proposed axial compressor, the longitudinal cutting ...

The axial compressor contains a core 15 with a ring groove 2. Inside the housing 1 there is an impeller 3 with blades 4, the peripheral part of which is located in the groove 2, which is located above the inlet

20 of these blades 4. Peripheral. part of the blades 4 is reduced in height in the meridional plane from the entrance (Noah to the rear edge. Blades 4 us-.

tanovleny relative to the housing 1 with a radial clearance equal to O.

During (care of the axial compressor in the annular groove 2, a stable vortex is formed, which changes the flow conditions in the radial flow {f and the flow conditions on the peripheral part of the blades k, which leads to a separation of the flow at the periphery and extension of the continuous operation of the axial compressor .

The arrangement of the annular groove 2 just above the inlet part of the blade t reduces the intensity of the descending vortex and thereby reduces the hydraulic losses of the axial compressor.

Claims (2)

Invention Formula An axial compressor comprising a housing with an annular groove and an impeller disposed therein with blades, the peripheral part of which is housed in a groove, characterized in that, in order to reduce hydraulic losses, the annular the groove is located above the input of the blades. Sources of information accepted in the attention in the examination 1. USSR author's certificate No. 7kS26, cl. F QA O 29/66, 19b2. i 2. US Patents ff 3129876, cl. “15-19, pub. 1964. Hanpff / fetft / e drip f