RU2359153C1 - Method of gas compression and device to this end - Google Patents

Abstract

FIELD: production processes.

SUBSTANCE: invention relates to devices designed to compress and advance gaseous media and can be used in various industrial branches for gas production and discharge under pressure. To compress gas, a piston is used representing a ferromagnetic fluid (FMF) film that moves in a variable-section channel, narrowing towards pressure side and, acted upon by electromagnetic forces, compresses and accelerates the gas. Then, the gas, on getting along with the piston into separator, gets separated from FMF and, after passing through the final scrubber, comes to consumer while FMF is directed to the cycle start. The device to compress gas represents a set of consecutive plates the aligned variable-section inner orifices narrowing from the suction to the pressure side. The device incorporates the magnetic fluid sprayer, pistons former and device to separate gas from ferromagnetic fluid. The plate outer surface accommodates induction coils connected to variable voltage source.

EFFECT: higher efficiency and improved vibro acoustic properties.

4 cl, 6 dwg

Description

The method of gas compression and device for its implementation

The invention relates to devices for compressing and moving gaseous media and can be used in various industries for the production and injection of gas.

Known methods of gas compression due to the reciprocating motion of the pistons, implemented by various designs of reciprocating compressors.

For example, a free piston compressor is known that contains two coaxial pistons in one cylinder with end caps and is equipped with two working chambers with built-in inlet and outlet valves, characterized in that a two-section linear motor is introduced into it, the rotors of which are ferromagnetic pistons with short-circuited conductors of increased electrical conductivity ( RF patent No. 2016231, IPC F04B 35/04, 1994 publication).

Known compressors have common disadvantages associated with the reciprocating movement of the pistons - gas pulsation at the outlet of the compressor, the occurrence of vibrational forces acting on the foundation, increased noise and vibration.

A known method of compressing gas by means of a jet compressor, comprising compressing gas due to the kinetic energy of a jet of liquid working fluid, the gas being carried away by the flow of the working fluid, followed by the expansion of the gas-liquid mixture and the simultaneous conversion of the dynamic pressure (kinetic energy of the stream) to polytropic pressure (gas pressure).

For example, it is known a device for compressing gas by means of a jet compressor, including a coaxially located inlet pipe with an outlet nozzle for supplying a working fluid, a receiving chamber with a side pipe for introducing gas and a mixing chamber with a diffuser, a container with a liquid working fluid and gas and a separator for separating a liquid working fluid from gas, moreover, a liquid with a specific gravity of at least one is selected as a liquid working fluid (RF patent No. 2184280, IPC F04F 5/54, publication 2002).

However, the low productivity of jet compressors and low efficiency, as well as poor performance in variable modes do not allow the widespread use of these compressors.

A known electromagnetic pump containing a pump chamber with a piston made of magnetic material in it in a shell made of ferromagnetic fluid, a drive made in the form of alternately fed electromagnets covering the pump chamber at some distance from each other (RF patent No. 2062904, IPC F04B 17/04, 1996 publication).

The objective of the invention is to develop a method and device for effective gas compression, increasing the efficiency of the device and improving its vibro-acoustic characteristics.

The essence of the proposed invention consists in the fact that a piston in the form of a film of ferromagnetic fluid (FMF) is used to compress gas, which, moving along a channel having a variable (tapering to the discharge side) section, compresses and accelerates gas under the action of electromagnetic forces, then gas , getting together with the piston in the separator, is separated from the PMF and, having passed the final cleaner, enters the consumer, and the PMF is sent to the beginning of the cycle.

A device for compressing gas by means of a liquid working fluid, which is used as a piston in the form of a film of ferromagnetic fluid, is made of a set of sequentially arranged plates having coaxially arranged internal openings of variable cross section, decreasing from suction to discharge, the device comprising a magnetic fluid atomizer, the piston shaper, as well as the gas separator from the ferromagnetic fluid, and induction coils connected to the source are located on the outer surfaces of the plates The book of impulse voltage.

To stabilize the film of ferromagnetic fluid, an additional set of internal plates connected to a pulse voltage source is located inside the set of plates.

The device can be made in the form of a coil wound over a liquid separator.

In the proposed design, the pistons of ferromagnetic fluid (PMF) move in one direction from suction to discharge.

Figure 1 presents a block diagram of the operation of the inventive device with pistons from FMG, figure 2-6 shows embodiments of the inventive device with pistons from FMG.

Figure 2 shows a General view of the device with pistons from the PMF.

A device for compressing gas contains a channel 1 of variable cross section (decreasing towards injection), a spray gun FMG 2, a shaper 3 of pistons made from FMZH, a device 4 that provides movement of the pistons, a gas separator 4 from FMZH.

Channel 1 is formed by a set of sequentially arranged plates 5 (FIG. 2) having coaxially located internal openings of variable cross section, decreasing from suction to discharge. On the outer surfaces of the plates are placed induction coils 6 connected to a pulse voltage source.

The plates 5 can be made, for example, of foil-coated fiberglass, and induction coils 6 are formed on them by etching or by another method, which, when a pulse current is applied to them, create a magnetic field. Holes are made in the central part of the plates, which can be of any shape, but the area of which should gradually decrease from the suction of the device to the discharge. Between the plates are installed gaskets (not shown), which prevent leakage of PMF and gas outlet.

There are other possible versions of the device with pistons from FMZH, providing the described principle of operation (movement of the piston from suction to discharge under the influence of electromagnetic forces).

After applying voltage to the shaper of the pistons, the PMF is supplied under pressure to the atomizer located at the end of the device. In this case, a piston 7 is formed inside the channel in the form of a film of ferromagnetic fluid. After the piston is formed from the PMF, the voltage on the plate of the piston former is removed, but immediately applied to the next plate located to the right of the former, causing the piston from the PMF to move to the right (Fig. 2), then the voltage pulse is removed from this plate and transmitted to the next (principle traveling wave), causing the piston to move from suction to discharge. Between the plates at the gas suction section after the former of the piston from the PMF there are channels through which the gas (in the simplest case air) fills the space after the piston from the PMF (i.e. gas is sucked). At the same time, the formation of the next piston from the FMG occurs, when the first piston leaves the suction zone, the next piston from the FMG is sent after it, and so on. After exiting the device, the gas, along with the remnants of the pistons from the PMF, is sent to the PMF separator. After cleaning, the gas enters the consumer, and the PMF is again directed to the sprayer by the pump. Gas compression is carried out by changing the volume of gas enclosed between the two pistons from the PMF during movement from suction to discharge, and by converting the kinetic energy of the gas into potential (pressure).

Figures 4, 5 show a design variant of the device in which, for stabilization of the PMF pistons inside the channel formed by the internal holes of the plates, there is an additional set of internal plates 8 connected to a pulse voltage source, which are located in the same plane with the external plates, a voltage pulse enters and disappears simultaneously on both the inner and outer plates.

Figure 6 shows a variant of the device with pistons made of PMF, made in the form of a coil located outside the separator FMG, which allows to reduce the dimensions of the installation.

In the proposed device, there is no reciprocating movement of the pistons, the movement of the compressed gas is continuous, i.e. there are no gas pulsations at the outlet of the device occurring in the reciprocating compressor, where they are caused by the reciprocating movement of the piston.

In the proposed device, there is no need to convert the rotational movement of the drive into reciprocating motion of the piston, there are no vibrational forces acting on the foundation, creating excessive noise and vibration.

Claims (4)

1. A method of compressing gas by means of a liquid working fluid, characterized in that a piston is used as the working fluid, which is formed in the form of a film of ferromagnetic fluid displaced by electromagnetic forces along a channel with a variable cross-section. 2. A device for compressing gas by means of a liquid working fluid, characterized in that a piston in the form of a film of ferromagnetic fluid is used as the working fluid, and the compression device is made of a set of consecutive plates having coaxially arranged internal openings of variable cross section, decreasing from suction for injection, while the device contains a magnetic fluid atomizer, a piston former, a gas separator from the ferromagnetic fluid, and placed on the outer surfaces of the plates Induction coils connected to a pulse voltage source are provided. 3. The device according to claim 2, characterized in that for stabilizing the film of ferromagnetic fluid inside the set of plates there is an additional set of internal plates connected to a source of pulse voltage. 4. The device according to any one of paragraphs.2 and 3, characterized in that it is made in the form of a coil wound over a liquid separator.

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