RU2517944C1 - Piston compressor - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: suction and discharge chamber in a piston compressor are divided by a partition. The discharge chamber volume is less than the suction chamber volume. The case of a cylinder is closed by covers on both sides. The first cover is fitted by ports where suction valves are installed. The suction valves are to connect the inner cavity of the working cylinder with the suction chamber. Delivery valves are to connect the inner cavity of the working cylinder with the discharge chamber. The number of suction valves installed in the ports of the first cover is equal to three. The number of delivery valves installed in the ports of the first cover is equal to two.

EFFECT: reduced time for a piston compressor to reach full operation mode, decreased dimensions, better processability of mounting a compressor on opposite base.

2 cl, 4 dwg

Description

The invention relates to the field of mechanical engineering, in particular to the field of compressor engineering, and may find application for the production of compressed gas at enterprises in various industries.

The closest technical solution, selected as a prototype of the inventive compressor, is a multi-stage opposed compressor containing one cylinder in each stage. Moreover, in the cylinder of the first stage - three suction and three discharge valves, in the cylinder of the second stage - two suction and two discharge valves, in the cylinder of the third stage - one suction and one discharge valve, in the cylinder of the fourth stage - one combined valve (RF patent for Utility Model No. 111208, IPC F04B 25/00 (2006.01), published on December 10, 2011). In each of the first, second and third stages, the compressor contains a housing, a cylinder with a piston, equal in volume to the suction and discharge chambers, between which a fixed partition is installed, pipes for supplying and discharging compressible gas, attached to the housing. The body is closed on both sides by covers with windows for installing valves. The disadvantages of the prototype are the long exit to the operating mode; inconvenience of installing gas supply pipelines, increased compressor size.

The technical result of the proposed technical solution is to reduce the time the piston compressor reaches the operating mode, reduce the size, increase the manufacturability of installing the compressor on an opposed base.

The technical result is provided by a reciprocating compressor, the essence of which is that it contains a cylinder body in which a working cylinder with a piston, a suction and discharge chambers are located. The suction chamber and discharge chamber are separated by a fixed partition. The cylinder body is closed on both sides by caps. The first cover is made with windows in which suction valves are installed. Suction valves connect the inner cavity of the working cylinder to the suction chamber. Discharge valves connect the inner cavity of the working cylinder to the discharge chamber. The number of suction valves installed in the windows of the first cover is three. The number of discharge valves installed in the windows of the first cover is two. The volume of the discharge chamber is less than the volume of the suction chamber. The gas supply pipe is attached to the first cover.

In the reciprocating compressor, the second cover may be made with windows in which suction and discharge valves are installed. The number of suction valves installed in the windows of the second cover is three. The number of discharge valves installed in the windows of the second cover is equal to two.

A piston compressor may include a single or double acting slave cylinder.

In a reciprocating compressor, gas is compressed and discharged when the suction valves and pressure valves are opened and closed in accordance with the gas pressure in the working cylinder, when the piston performs rectilinear reciprocating movements in it. Typically, a reciprocating compressor contains an equal number of suction and discharge valves, and a suction and discharge chamber of equal volume. The creation of working pressure in the discharge chamber at compressor start-up is ensured as a result of multiple piston strokes. The execution of the compressor containing the working cylinder with three suction valves and two discharge valves, and a simultaneous decrease in the volume of the discharge chamber compared to the suction chamber reduces the time the compressor enters the operating mode.

Figure 1 shows the inventive piston compressor in longitudinal section along the axis of the cylinder.

Figure 2 shows a view of the housing cover of the inventive reciprocating compressor.

Figure 3 shows the installation diagram of the inventive reciprocating compressor on the opposite base.

Figure 4 shows the installation diagram of the compressor of the prototype on the opposite base.

The piston compressor comprises a cylinder housing 1, in which a working cylinder 2 with a piston 3 is placed, as well as a suction chamber 4 and a discharge chamber 5 (FIGS. 1, 2). The suction chamber 4 and the discharge chamber 5 are separated by a fixed partition 6. The suction chamber 4 is twice as large in volume as the discharge chamber 5. The cylinder body 1 is closed on both sides by covers 7. The caps 7 are cast, preferably in conjunction with the cylinder body 1.

When making the working cylinder 2 in the form of a simple-acting cylinder, windows 8, 9 are made in one of the covers 7, in which valves 10, 11 are installed. In this case, suction valves 10 are installed in three windows 8, connecting the internal cavity 12 of the working cylinder 2 with the suction chamber 4. The suction chamber 4 is connected to the pipe 13 for supplying gas. The gas supply pipe 13 is attached to the cover 7 of the cylinder body 1. In two windows 9 are installed discharge valves 11 connecting the internal cavity 12 of the working cylinder 2 with the discharge chamber 5. The discharge chamber 5 is connected to the pipe 14 of the gas outlet. The gas outlet pipe 14 is connected to the cylinder body 1.

When making the working cylinder 2 in the form of a double-acting cylinder, both covers 7 are made with windows 8, 9 in which the valves 10, 11 are installed, respectively, as described above. In this case, the gas supply pipe 13 is connected to one of the covers 7 of the cylinder body 1.

The piston compressor operates as follows. When the piston 3 moves in the direction from the valves 10, 11, a vacuum is created in the working cylinder 2, and three suction valves 10 are opened. Pressure valves 11 are closed. Gas flows from the gas supply pipe 13 to the suction chamber 4, from which through the suction valves 10 it enters the internal cavity 12 of the working cylinder 2. When the piston 3 moves backward towards the valves 10, 11, the gas in the working cylinder 2 is compressed, the suction valves 10 two discharge valves 11 are closed and opened. Gas flows from the internal cavity 12 of the working cylinder 2 into the discharge chamber 5, from which it enters the gas outlet pipe 14. Due to the small volume of the discharge chamber 5 in comparison with the volume of the suction chamber 4 and the volume of the discharge chamber of the prototype, the required pressure is set faster in the discharge chamber 5 of the inventive compressor.

The connection of the inlet pipe not with the cylinder body of the piston compressor from above or below, but with the cover of the cylinder body, that is, from the side, allows the piston compressor to be compactly placed on an opposed base (Fig. 3) compared to the prototype (Fig. 4).

The sources of patent and scientific and technical information did not reveal information that discredited the novelty of the proposed technical solution. In addition, according to the results of the analysis of scientific and technical information related to reciprocating compressors, the authors believe that the set of essential features of the invention also meets the patentability criterion of "inventive step".

The description shows that for the implementation of the device uses elements used in industry, which allows us to conclude that the industrial applicability of the invention.

Thus, the inventive "Piston compressor" is new, has an inventive step, is industrially applicable and, therefore, meets the conditions of patentability of the invention.

Claims (2)

1. A piston compressor comprising a cylinder body in which a working cylinder with a piston is located, a suction and discharge chambers separated by a fixed partition, the cylinder body is closed on both sides with covers, the first cover is made with windows in which suction valves are installed connecting the working cavity cylinder with a suction chamber, and discharge valves connecting the inner cavity of the working cylinder with a discharge chamber, the number of suction valves installed in the windows the howl of the cover is three, characterized in that the number of discharge valves installed in the windows of the first cover is two, the volume of the discharge chamber is less than the volume of the suction chamber, and the gas supply pipe is connected to the first cover. 2. The piston compressor according to claim 1, characterized in that the second cover is made with windows in which suction and discharge valves are installed, while the number of suction valves installed in the windows of the second cover is three, and the number of pressure valves installed in the windows the second cap is equal to two.

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