The method of pumping gas through existing pipelines and device for its implementation

 

(57) Abstract:

The invention relates to the field of nsoso and production of compressors and can be used in oil, gas and other industries for pumping liquids and gases. In the method of pumping gas through existing pipelines, including the main loop of the compression of gas by ejection capture the last jet of the working fluid from the discharge, and their mixture with the formation of a uniform flow, kompremirovannyj gas in the working chamber of the inkjet apparatus and the separation of gas-liquid mixture in the separator with the return of the working fluid in the intake pipe for the liquid, and an additional cycle gas compression to a pressure sufficient to displace the gas in the discharge line for the gas, additional compression cycle is carried out after the complete replacement of separator liquid gas at the end of the primary cycle by submitting to the separator simultaneously with the gas-liquid mixture from the inkjet apparatus of the additional quantity of fluid from the discharge line for the working fluid. In the device for pumping gas through the existing pipeline, including jet apparatus with working and receiving chambers and nozzle, the reason for the gas with the installed non-return valve, the intake pipe for the working fluid with the installed power of the pump is connected through the discharge pipe to the cavity of the nozzle of the jet apparatus to the receiving chamber which is connected a receiving pipeline for gas with the installed check valve, and a two-position spool valve with the drive controller, the spool valve is installed at the outlet of the separator liquid and in one of the operating positions it connects through the flow regulator to the receive pipeline for liquid and the other reports through another flow regulator with pressure pipeline for the working fluid. The technical result of the invention is to reduce the intensity of the pumping process gas by reducing hydraulic energy losses in additional cycle gas compression, as well as reducing the amount of fluid flowing in the gas flow, due to the continuous separation of gas-liquid mixture during both cycles of the compression of gas. 2 S. and 2 C.p. f-crystals, 1 Il.

The invention relates to the field of production of compressors, and vacuum pump engineering technology and can be used in oil, gas and other industries for pumping gases.

Known the solution with the formation of a single thread the compressed gas in the working chamber of the inkjet apparatus and the ejection cycle pumping emitted from the gas stream through the formation of a local vortex zones (see patent SU N 1838671, F 04 F 5/24, 1991).

The disadvantage of this method is the high energy intensity of the process of compression and pump gas due to the presence of two consecutive cycles of ineffective ejection energy exchange between the working and the pumped liquid.

Closest to the proposed invention is a method of pumping gas, including the first cycle of ejection capture the gas jet of the working fluid and the mixture with the formation of a uniform flow and compression of the gas in the working chamber of the inkjet apparatus, the gas-liquid mixture flow in a separator for separating gas and working fluid, followed by a second cycle of additional gas compression, re-supplied to the working stream of the working fluid, but at higher pressures (see patent RU N 2100662, F 04 F 5/54, 1996).

Also known device for pumping gas through the existing pipeline, including jet apparatus with working and receiving chambers and nozzle, inlet pipes for fluid and gas discharge line for the gas separator and off the water for gas and the other to the discharge pipe (see patent RU N 2100662 F 04 F 5/54, 1996).

A disadvantage of the known method and device is the high energy intensity, due to the fact that during both first and second cycle in energy transfer from the fluid to be pumped gas there is a high loss of energy caused by mixing the formed gas-liquid mixture and the appearance of an intense vortex of return flows directed towards the flow of the working fluid. In addition, a significant portion of the working fluid goes together with the pumped gas, which in some cases complicates the process of drying and subsequent gas treatment.

The objective of the invention is to reduce the intensity of the pumping process gas by reducing hydraulic energy losses in additional cycle gas compression, as well as reducing the amount of fluid flowing in the gas flow, due to the continuous separation of gas-liquid mixture during the first and additional cycles of compression of gas.

This object is achieved in that in the method of pumping gas through existing pipelines, including the main loop of the compression of gas by ejection capture the last jet of the working the working chamber of the inkjet apparatus and the separation of gas-liquid mixture in the separator with the return of the working fluid in the receiving pipeline for liquid and additional compression cycle gas until pressure sufficient to displace the gas in the discharge line for the gas, according to the invention, an additional cycle gas compression is carried out after the complete replacement of separator liquid gas at the end of the primary cycle by submitting to the separator simultaneously with the gas-liquid mixture from the inkjet apparatus of the additional quantity of fluid from the discharge line for the working fluid.

And the fact that the device pumping gas through existing pipelines, including jet apparatus with a working and a suction chamber and a nozzle connected to the outlet of the working chamber of the separator, the gas which is connected to the discharge pipeline for gas with the installed non-return valve, inlet duct for a working fluid with the installed power of the pump is connected through the discharge pipe to the cavity of the nozzle of the jet apparatus to the receiving chamber which is connected a receiving pipeline for gas with the installed check valve, and a two-position spool valve with the drive controller according to the invention, on-off valve installed at the outlet of the separator liquid and in one of the operating positions connects the PR flow to the discharge pipe for the working fluid.

In preferred cases embodiment of device:

it is equipped with gas sensors and fluid installed at the outlet of the separator gas and liquid, is connected to the drive controller two-position spool valve;

the nozzle is equipped with a diffuser.

The invention is illustrated in the drawing, which depicts a diagram of a device for pumping gas.

The device comprises a jet apparatus with 1 working and 2 reception chambers and nozzle 3, the intake pipe 4 for gas, reflux valve 5 and is connected to the receiving chamber 2, the discharge pipe 6 for gas with the installed non-return valve 7 and the separator 8, is equipped with gas sensors and fluids 9, 10, connected via the controller 11 with the actuator 12 is controlled on-off valve 13, the power pump 14 with the receiver 15 and the discharge 16 pipelines for the working fluid.

The separator 8, the output of fluid through the valves 13 in one of its operating positions reported by the channel 17 with the receiving pipe 15 to the working fluid, and the other provisions of channel 18 to the discharge pipe 16 to the working fluid.

In stresseraser section 19.

Each of the channels 17, 18, connecting the receiving 15 and injection 16 pipelines for the working fluid with an on / off valve 13, is equipped with flow regulators 20, 21, respectively, in the form of a variable hydraulic resistance. The working fluid is supplied to power the pump 14 from the container 22.

The workflow implemented in the device by the proposed method consists of two consecutive cycles of compression of gas.

The first cycle. Power pump 14, the working fluid is supplied by pipeline 16 into the nozzle 3 of the jet apparatus. Through the open valve 5 through the receiving line 4 gas enters the receiving chamber 2. In the working chamber 1 is ejection capture the gas jet of the working fluid with the formation of a uniform flow. The presence of gas in the inlet chamber 2 provides a flow of fluid through the diffuser section 19 without contact of the liquid with the walls of the diffuser section. The length of the working chamber in the pressure build-up, leading to compression of the gas. Gas-liquid mixture from the working chamber 1 is discharged in the separator 8, where the gas is separated from liquid. Gas accumulates in the separator 8, the working fluid is expelled from the separator 8 through the on-off valve 13 when the s in the separator 8, to obtain the optimal operation of the inkjet apparatus. The valve 7 on the first cycle of compression, the gas is closed because the pressure in the separator 8 is less than the pressure in the discharge line 6.

The second additional compression cycle begins when the liquid is expelled from the separator 8 and the sensor 10 fixed point of the substitution liquid gas (for example, to change the conductivity of the medium). The signal from the sensor 10 is converted by the controller 11 in the control signal supplied to the actuator 12 on-off valve 13. The valve 13 moves into its second operating position, blocking the channel 17, and reporting the channel 18 to the separator 8. The working fluid begins to flow into the separator and through the channel 18 is installed on the flow regulator 21, which allows to reduce the amplitude of the pressure variation in the output power of the pump 14 at the time of switching valve 13. Due to the inflow of liquid into the separator 8 in it starts to increase the pressure. The receiving chamber 2, the pressure increases, the valve 5 is closed receiving chamber 2 is filled with liquid. Because the diffuser section 19 filled with a homogeneous medium, the mode of fluid flow through it is changed (in contrast to the first cycle, when receiving chamber was Zack realized unseparated fluid flow, the kinetic energy of the flow is converted into the potential.

When the pressure in the separator 8 vyrovnitsja with the pressure in the delivery pipe 6 opens the valve 7 and the gas from the separator 8 begins to be pushed into the injection pipe 6. When all the gas is expelled from the separator 8, the sensor triggers 9 (for example, to change the conductivity of the medium). The signal from the sensor 9 is converted by the controller 11 in the control signal supplied to the actuator 12 on-off valve 13. The valve 13 moves in the first operating position, blocking the channel 18 and communicating the low pressure channel 17 to the separator 8. In the separator 8 at this reduced pressure, the pressure also decreases in the inlet chamber 2 of the jet apparatus. The valve 5 is opened and the suction chamber 2 is filled with gas. A jet of working fluid separates from the walls of the diffuser section 19. Jet apparatus starts pumping gas. The gas fills the separator 8, displacing the liquid. Described cycles are repeated sequentially one after the other.

Thus, the device circuitry can be implemented two-stage gas compression. A complete working cycle is divided into two cycles. During the first cycle, the gas is compressed in gidrostroya the pipeline 6. During the second cycle, the gas is compressed to a pressure sufficient to displace the gas in the discharge line. On the second loop uses the process more efficient - positive displacement gas-liquid, which can reduce energy costs for compression and pumping gas in General.

In addition, during cycle additional compression of the gas is ensured by the reduction of hydraulic pressure loss in the flow of working fluid through the nozzle, which is achieved by reducing the flow velocity of the fluid and increase the pressure in the expanding diffuser output channel of the nozzle. Unseparated fluid flow in the diffuser portion of the nozzle facilitates the conversion of kinetic energy into potential and reduced the rate of fluid flow at the outlet of the diffuser portion of the nozzle and, accordingly, at the entrance to the mixing chamber provides a reduction of local hydraulic resistance caused by the sudden expansion of the flow.

1. The method of pumping gas through existing pipelines, including the main loop of the compression of gas by ejection capture the last jet of the working fluid from the discharge, and their mixture to form a unified flux is returning the working fluid in the receiving pipeline for liquid and additional compression cycle gas until pressure sufficient to displace the gas in the discharge line for the gas, characterized in that the additional cycle gas compression is carried out after the complete replacement of separator liquid gas at the end of the primary cycle by submitting to the separator simultaneously with the gas-liquid mixture from the inkjet apparatus of the additional quantity of fluid from the discharge line for the working fluid.

2. Device for pumping gas through the existing pipeline, including jet apparatus with working and receiving chambers and a nozzle connected to the outlet of the working chamber of the separator, the gas which is connected to the discharge pipeline for gas with the installed non-return valve, inlet duct for a working fluid with the installed power of the pump is connected through the discharge pipe to the cavity of the nozzle of the jet apparatus to the receiving chamber which is connected a receiving pipeline for gas with the installed check valve, and a two-position spool valve with the drive controller, characterized in that that on-off valve installed at the outlet of the separator liquid and in one of the operating positions it connects through PE pressure pipeline for the working fluid.

3. The device according to p. 2, characterized in that it is equipped with gas sensors and fluid installed at the outlet of the separator gas and liquid, is connected to the drive controller two-position spool valve.

4. The device according to p. 2, characterized in that the nozzle is provided with a diffuser.

 

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FIELD: pump engineering.

SUBSTANCE: well pumping unit comprises pipe string provided with packer mounted on the string from top to bottom and provided with the central through passage and support. The support is provided with by-pass ports and axial stepped passage which can receive the locking insert with the central through passage or jet pump, the housing of which receives active nozzle, mixing chamber with diffuser, passage for supplying fluid to the active nozzle, passage for supplying fluid to be pumped out, and passage for discharging fluid mixture. The housing is provided with the through passage made above the passage for supplying the fluid to be pumped and connected with it. The through passage has the seat for installation of the sealing unit which is provided with axial passage. A flexible pipe passes through the axial passage and the passage for supplying fluid to be pumped for permitting axial movement. The bottom end of the flexible pipe is provided with logging instrument for measuring physical characteristics, e.g., electric resistance of rocks. The jet pump has the following sizes: ratio of the diameter of mixing chamber inlet Dmix to that of the nozzle inlet Dn ranges from 1.1 to 2.4, ratio of mixing chamber length Lmix to the diameter of the mixing chamber inlet Dmix ranges from 3 to 7, ratio of nozzle length Ln to its outlet diameter Dn ranges from 1 to 8, distance L from the nozzle outlet to the mixing chamber inlet ranges from 0.3 to 2 of the diameter of nozzle outlet Dn, and angle of inclination of the diffuser generatrix to its longitudinal axis ranges from 4o to 14o. The passage for discharging mixture is in communication with the by-pass ports and, through them, with the space around the pipe string. The passage for supplying fluid is in communication with the inner space of pipes above the jet pump.

EFFECT: enhanced reliability of plant.

8 cl, 3 dwg

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