RU2610356C1 - Device for gas compression - Google Patents

Abstract

FIELD: gas industry.

SUBSTANCE: invention relates to gas compression and pumping and can be used in drilling, development and operation of oil and gas wells, as well for filling a vehicle with liquefied gas. Device for compression of gas comprises supply pipe 1 with impact valve 2, pressure cap 3 with damper 4 inside it, in form of a hollow chamber, connected to pipe 1 with possibility of filling its inner cavity of working medium. Outer side of damper 4 faces inner cavity of cap 3, as well as inlet and bypass valves 5 and 6. Pipe 1 is made in form of a closed hydraulic circuit. Valves 5 and 6 are connected to inner cavity of cap 3. Additionally there is control valve 7, pump 9, expansion tank 10, heat exchanger 8 and pressure regulator 11. Valve 7 is installed between cap 3 and pipe 1, in which are successively incorporated heat exchanger 8 and pump 9, input of which connected to tank 10. Pressure regulator 11 is installed at outlet of valve 6.

EFFECT: higher reliability and efficiency.

1 cl, 1 dwg

Description

The invention relates to energy, and in particular to the field of compression and pumping gas, and can be used in the drilling, development and operation of oil and gas wells, as well as for refueling motor vehicles with liquefied gas.

A device for injecting gases and gas-liquid mixtures is known, including a volumetric type hydraulic blower, consisting of a number of sections, compression chambers in communication with the blower, each of which contains a suction valve for supplying gas or gas-liquid mixture to the chamber from an independent source. Above the suction valve there is a discharge valve in communication with the consumer. A pump for supplying nutrient fluid through the suction valve of the supercharger is installed to create a water seal in the compression chambers. Compression chambers are made in the form of a separate compression module connected by pipelines to the hydraulic part of the supercharger (RU 2282749, IPC F04B 19/06, F04B 35/00, published on 08.27.2006).

The disadvantages of the known device are the large energy costs for the drive of the crank mechanism, as well as the relatively large energy losses due to friction. In addition, when boiling a gas, it dissolves in water, which requires subsequent separation of the gas-liquid mixture into gas and liquid, which leads to the complexity of the process.

The closest in technical essence to the proposed technical solution is a hydraulic ram containing a lifting stage, including a supply pipe with a shock valve, a pressure cap containing a fitting with a spool and a hollow damper placed inside it, made in the form of a hollow rubber chamber, an inlet and an overflow valve, as well as a pipe connecting the pressure cap to the water tank. A hollow damper is connected between the inlet and bypass valves with the possibility of filling its inner cavity with a working medium, while the outer side of the damper is facing the inner cavity of the pressure cap, which is connected to the atmosphere by means of a fitting (RU 144214, IPC F04F 7/02, publ. 08/10/2014 )

The performance of the device is ensured by using the effect of water hammer. The increase in pressure ΔР (Pa) in the fluid, achieved with water hammer, reaches significant values and can be determined by the formula:

ΔP = 100γν,

where γ is the specific gravity of the liquid, N / m ³ ;

ν is the speed of steady-state fluid movement, m / s (V. Hovsepyan, Hydraulic ram and ram systems. / V. M. Hovsepyan. - M.: Mechanical Engineering, 1968. - 124 p.).

The disadvantage of the technical solution described above is that the discharge of the working medium (fluid) occurs outside the hydraulic system. The known device is not intended for compression and pumping of gas, but it is chosen as a prototype, since the effect of increasing pressure during a hydraulic shock in a liquid is used to increase gas pressure.

The technical result consists in increasing the reliability and efficiency of the gas booster device, which is achieved by increasing the pressure of the compressible gas and the absence of the need to separate the gas-liquid mixture while simplifying the design.

The essence of the invention lies in the fact that the device for booster gas, including a supply pipe with a shock valve, a pressure cap with a hollow damper located inside it, made in the form of a hollow elastic chamber, the outer side of which is facing the inner cavity of the pressure cap connected to the supply pipe, as well as inlet and bypass valves. The inlet pipe is made in the form of a closed hydraulic circuit, the inlet and bypass valves are included in the internal cavity of the pressure cap. Additionally contains a control valve, pump, expansion tank, heat exchanger and pressure regulator. A control valve is installed between the pressure cap and the supply pipe of the working medium, in which the heat exchanger and pump are connected in series, the input of which is connected to the expansion tank, and the pressure regulator is installed at the outlet of the bypass valve.

The drawing shows a device for booster gas.

The gas booster device comprises a feed pipe 1 in the form of a closed hydraulic circuit with a shock valve 2. Pressure cap 3, with a hollow damper 4 placed inside it, made in the form of a hollow elastic chamber, the outer side of which is facing the inner cavity of the pressure cap 3. Hollow damper 4 is connected to the supply pipe 1 with the possibility of filling its internal cavity with a working medium. Inlet 5 and bypass 6 valves are included in the internal cavity of the pressure cap 3. Between the pressure cap 3 and the inlet pipe 1, an adjustment valve 7. A heat exchanger 8 and a pump 9 are connected in series to the inlet pipe 1. The inlet of the pump 9 is connected to the expansion tank 10. Pressure regulator 11 is installed at the outlet of the bypass valve 6.

A gas booster device operates as follows. First, the supply pipe 1 through the expansion tank 10 is filled with a working medium (for example, water). Then, it is circulated using pump 9. In this case, the shock valve 2 automatically opens and closes the passage section of the inlet pipe 1, which ensures an increase in the volume of the hollow damper 4 in the inner cavity of the pressure cap 3 with a positive wave of water shock and a hydraulic shock. The gas supplied with the initial pressure through the inlet valve 5 into the internal cavity of the pressure cap 3, is compressed in it under the action of a positive wave of water hammer. t through the bypass valve 6 and pressure regulator 11 to the consumer (not shown in the figure). The control valve 7 when changing the flow cross-section allows you to change the degree of gas compression in the pressure cap 3 from the action of a positive wave of water hammer, part of which is extinguished in the expansion tank 10. When the gas is compressed by the hollow damper 4, the pressure cap 3 heats up. Heat removal is provided by the working medium circulating through it, which, returning each time when a negative shock wave acts in the supply pipe 1, is cooled in the heat exchanger 8. Heat can be used to increase the energy efficiency of the device.

Compared with the known technical solution, the proposed one provides an increase in the reliability and efficiency of the gas booster device, which is achieved by increasing the pressure of the compressible gas, eliminating the need for separation of the gas-liquid mixture and simplifying the design.

Claims (1)

A gas booster device including a supply pipe with a shock valve, a pressure cap with a hollow damper located inside it, made in the form of a hollow elastic chamber, the outer side of which is facing the inner cavity of the pressure cap connected to the supply pipe, as well as the inlet and bypass valves, characterized in that the supply pipe of the working medium is made in the form of a closed hydraulic circuit, the inlet and bypass valves are included in the internal cavity of the pressure cap, additionally containing um control valve, the pump, the expansion tank, heat exchanger and pressure regulator, wherein the control valve is installed between the discharge cap and the inlet tube which are connected in series a heat exchanger and a pump whose input is connected to the expansion tank, and a pressure regulator mounted at the outlet of the overflow valve.

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