SU1712667A1 - Stator of multistage centrifugal compressor - Google Patents

Abstract

The invention relates to compressor engineering and allows an increase in the SD. reduce metal consumption and labor intensity; The diaphragms (D) 3 are installed in the stator housing 1 with gaps 7 communicated with interstage cavities 2. The discharge cavity 6 is connected to the internal space of housing 1, which eliminates the bending deformations D 3. The forces acting on D 3 are axisymmetric and squeeze them along the plane of the connector of the housing 1. This allows to reduce the thickness of the walls D 3 and reduce their diametral dimensions due to the absence of spikes. The complexity of manufacturing is reduced by eliminating the operation of processing the inner surface of the housing. Cavity 6 m. connected to the internal space of the housing using a pipeline with a flow meter, which allows leakage to be monitored. 2 zp f-ly. 2 illustrationsptptis.i "SiOch • XI

Description

This invention relates to a compressor industry, in particular, to stators of multistage centrifugal compressors.

The aim of the invention is to increase efficiency. reduction of metal consumption and labor intensity of manufacturing.

FIG. 1 schematically shows a stator, a longitudinal section; in fig. 2 shows section A-A in FIG. one.

The stator of a multistage centrifugal compressor with a horizontal connector includes a housing 1. 2 diaphragms 3 installed with the formation of interstage cavities 2 with 4 clips 4 shaft seals 5 and the discharge cavity 6. and the discharge cavity 6 is connected to the inner space of the housing 1.

The discharge cavity 6 can be connected to the internal space of the housing 1 by means of the pipeline 8, the latter can be equipped with a flow meter 9. The diaphragms 3 are fastened to the horizontal connector by means of the ribs 10 and mounted in the housing 1 on the legs 11.

During operation of the compressor, gas from the discharge cavity 6 is supplied to the inner space of the housing 1. In this case, the forces acting on the diaphragm 3 are axially symmetrical and contribute to the compression of the diaphragm 3 along the planes of the connector.

A flow meter 9 installed in conduit 8 allows monitoring the amount of leakage and thereby diagnosing the state of the flow passage of the compressor;

Such an embodiment of the stator reduces the metal consumption by reducing the thickness t of the walls of the diaphragms 3 by eliminating their flexural deformations and reducing the diametric dimensions of the diaphragms 3 due to the absence of spikes. It also reduces the labor intensity of manufacturing the stator as a result of the elimination of internal

the surface of the DK body 1 and the outer surface of the diaphragms 3.

Improving the accuracy of the installation of the halves of the diaphragms 3 one relative to the other eliminates the steps of the mating parts and

reduces losses in flow chutes contributes to increased efficiency. Additional compression of the diaphragm 3 by external pressure also contributes to reducing leakage and increasing efficiency.

Claims (3)

1. A multistage centrifugal compressor with a horizontal connector, comprising a housing installed therein to form interstage cavities of the diaphragm with the shaft seal holders and the discharge cavity, which are located because with gaps communicated with interstitial cavities, and the discharge cavity is connected to the internal space of the housing. 2. A stator according to claim 1, characterized in that the discharge cavity is connected to the internal space of the housing by means of a pipeline. . 3. The stator according to claim 2, about the t and the fact that the pipeline is equipped with a flow meter. svigg