SU1059268A1 - Two-stage centrifugal compressor - Google Patents

Abstract

A TWO-SPEED CENTRIFUGAL COMPRESSOR, comprising a housing with an inlet, located in the housing of the first-axle and second-stage axial-impeller wheels, a rotating blade guide unit mounted in the nozzle, a heat-exchanger with the inlet and outlet channels and the valve, with a rotating blade, placed between the stages of the heat exchanger with the inlet and outlet channels and the rotating blade, and between the stages, the heat exchanger with the inlet pipe and the rotating blade, and between the stages, the heat exchanger with the inlet channel and the rotating blade, and between the stages, the heat exchanger with the inlet channel and the rotating blade, and between the stages, the heat exchanger with the inlet channel and the rotating blade, and between the stages, the heat exchanger with the inlet channel and the rotating blade, and between the stages, the heat exchanger with the inlet channel and the rotating blade, and between the stages, the heat exchanger with the inlet channel and the rotating blade, and between the stages, the heat exchanger with the inlet channel and the rotating blade, and between the stages, the heat exchanger with the input channel and the rotating blade; characterized in that, in order to reduce the overall dimensions, the output channel of the heat exchanger is located between the first-stage impeller and the housing, and the fan blades are placed in the channel They are made in one piece with the blades of the guide vane.

Description

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This invention relates to a compressor industry, in particular to two hundred foam compressors.

A intermediate cooling compressor is known, comprising a Korg valve with an inlet pipe, impellers of the first and second stages located in the housing, a heat exchanger with inlet and outlet channels and a fan with working blades 1 located between the stages.

The disadvantage of such a compressor is the presence of an intermediate circuit, which complicates the whole system and creates additional losses by thermal resistance and, consequently, reducing the cooling reliability, as well as the need for a separate fan with the appropriate power supply from the engine.

The closest in technical essence and the achieved result to the proposed technical solution is a two-stage centrifugal compressor, comprising a housing with an inlet nozzle, first-and second-stage axial impellers, and a guide unit with rotating blades installed in the nozzle, a heat exchanger with inlet and outlet channels placed between the stages and a fan with working blades 2.

A disadvantage of the known compressor is its large size. .

The purpose of the invention is to reduce the size.

This goal is achieved by the fact that in a two-s ± centrifugal centrifugal compressor comprising a housing with an inlet, located in the housing axial impellers of the first and second stages, a rotating apparatus with rotating blades installed in the housing, a heat exchanger with the inlet and an outlet located between the steps. channels and fan with working blades, the output channel of the heat exchanger is located between the pan and the casing of the first stage and the working blades of the fan are placed in the channel and a bottom integrally with the guide vanes apparatus.

FIG. 1 shows a two-stage centrifugal compressor, longitudinal section; FIG. .2 - cut

A-A in FIG. one; in fig. 3 is a view B in FIG. one.

The two-stage centrifugal compressor includes a housing 1 with an inlet manifold 2, located in the housing 1 axial impellers 3 and 4, respectively, of the first and second stages, installed in the manifold 2 a guide device 5 with rotating blades 6, placed between the first and second stages of workers wheels 3 and 4 heat exchanger 7 with inlet 8 and outlet 9 channels and fan 10 with blades 11, outlet channel

with 9 of the heat exchanger 7, located between the impeller 3 of the first stage and the housing 1, and the blades 11 of the fan 10 are placed in the output channel 9 and b1 complete with the blades 6

0 guiding apparatus 5.

In addition, the compressor contains a slot diffuser 12, which separates the cochlear cavity 13 from the impeller 3 of the first stage. AT

5 of the cochlear cavity 13, the annular guide vanes 14 are placed. The working vanes 11 of the fan 10 are separated from the blades of the guide apparatus 5 by means of a separating rim 15.

During operation of a two-stage centrifugal compressor, the working fluid enters the lower rus of the blades of the guide vane.

5 5 through the inlet 2. Next, the working fluid enters through the slit diffuser 12 into the cochlear cavity 13. A smooth entrance of the working fluid to the heat exchanger 7 provides an annular guide blade 1--4, while cooling the working body in the heat exchanger 7. From the heat exchanger 7, the working fluid enters the impeller 4 of the second stage of the compressor.

Separating space 15 provides separation of working fluid and cooling air. The fan blades 11 of the fan 10 provide the suction of the cooling

0 air coming from the atmosphere through the inlet channel 8 to the heat exchanger 7, and the air flow rate is proportional to the flow rate of the working fluid.

5 The proposed implementation of a two-stage centrifugal compressor provides a reduction in its size.

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Claims (1)

TWO-STAGE CENTRIFUGAL COMPRESSOR, comprising a housing with an inlet pipe, axial radial impellers of the first and second stages located in the housing, a guiding apparatus with rotating blades installed in the pipe, a heat exchanger with inlet and outlet channels located between the steps, and a fan with working blades I mean that, in order to reduce the dimensions, the heat exchanger output channel is located between the impeller of the first stage and the housing, and the fan blades are located in the channel and ying in one piece with the guide vane blades. C si oe 00