SU848748A1 - Method of producing gas high pressure - Google Patents

Description

one

The invention relates to a compressor technique, in particular, can be used for injecting gases in a tank and cylinders, such as aqualungs, in refrigeration units, for example for liquefying gases, and in other parts.

 A known method of obtaining high pressure gas in a single-stage compressor, including the processes of suction and compression with constant cooling.

Achieving high performance in a single-stage compressor is limited by the difficulties associated with heat removal.

There is also known a method for producing a high gas pressure in a two-stage compressor, which includes the repeated implementation of the processes of suction and compression in two parallel-connected cavities with constant cooling 2.

The disadvantage of this method is the incomplete use of the working cavity of the compressor due to the presence of harmful space in it, which leads to a decrease in compressor capacity.

The purpose of the invention is to improve the performance of the compressor.

This goal is achieved by the fact that at the end of each cycle the cavities are merged and, after equalizing the pressures, are again separated.

Figures 1-7 provide a flow chart of the method.

A device for carrying out the method comprises a compressor cylinder 1, a piston 2, a cavity 3 located under the piston 2, and a cavity 4 located above the piston 2. The cavities 3 and 4 are connected to the receiver 5 via valves 6 and 7, respectively. The receiver 5 has a cooling system made, for example, in the form of a water jacket 8. The cavity of the cylinder 1 is equipped with valves 9 and 10 i

When the piston 2 moves upwards (Fig. 2), the valve 7 is closed, while in the cavity 4 through the check valve 10 air is drawn in from the atmosphere, and the air in the cavity 3 is forced out into the receiver 5 through the open valve 6. Air pressure and temperature the receiver 5 rises, and the heat bobman starts with cooling water through the walls of the receiver 5. When the volume of fiole 3 becomes the smallest and

The volume of cavity 4 is the largest (Fig. 3), the valve 7 is opened (Fig. 4), while the air pressure in cavities 3 and 4 and in the receiver 5 is equalized and becomes more atmospheric, with the result that the check valve 10 is closed. The air cooled in receiver 5 when combining cylinder 1 and receiver 5 is throttled into cylinder 1, and its temperature decreases.

When piston 2 moves downward (Fig. 5), valve 6 is closed, while air is sucked into the cavity 3 through a non-return valve 9, and air in cavity 4 is forced out into the receiver 5 through an open valve 7. Pressure and the air temperature in it rises, and heat exchange with cooling water begins. When the volume of the cavity 4 becomes the lowest, and the volume of the cavity 3 becomes the largest (Fig. 6), the valve b is opened (Fig. 7j, the air pressure in the cavities 3 and 4 and in the receiver 5 is equalized and becomes larger than during the previous merger (Fig. 4) and, therefore, more atmospheric, with the result that the check valve 9 closes (Fig. 7). As the air cooled in the receiver 5 expands when combined, its temperature decreases but does not become lower than the temperature of the cooling water, since total pressure in the system is above atmospheric, Besides the heat exchange between the air comprised within the receiver 5, and the cooling water continues.

Then, the processes are repeated in the same order with constant cooling.

When equalizing the pressure, the pressure in the dead space of the compressor decreases, as a result of which the degree of expansion of the gas from the dead space decreases, and the filling ratio and productivity of the compressor increase. An increase in productivity is equivalent to increasing the maximum injection pressure.

The use of the proposed method gives the people a large economic

0 savings by reducing the range of equipment, as well as freeing production space and reducing maintenance costs.

The method can be used as

5 in piston, and in rotor compressors.

Claims (2)

1. Khrapach G.K. Operation of compressor units, M., Nedra, 1972, p. 15.16. 2. Semidubersky MS. Pumps, compressors, fans. M., High Stake, 1974, p. 14. ftsg.g FIG. five S .5 Fi, 7