Compressor station for gas conditioning before its delivery to gas-main pipeline

FIELD: transportation.

SUBSTANCE: at compressor station for gas conditioning before its delivery to gas-main pipeline which station contains gas-compressor plants including centrifugal boosters driven by gas-turbine engines, heat exchangers for gas cooling, pipelines and locking elements, in each of gas-compressor plants on one shaft and in one housing with centrifugal booster driven by gas-turbine engine, gas turboexpander, at that, outlet of gas cooling heat exchanger which inlet is connected with booster output is connected with inlet of gas turboexpander outlet of which is connected by pipeline with gas-main pipeline, at that, gas-compressor plants with gas turboexpander are collected in pairs in block-containers with possibility for each of gas-compressor plants of one block-container to work in parallel or in series.

EFFECT: gas-main pipelines reliability enhancement by means of supplying to them compressed air of reduced temperature.

3 dwg

 

The present invention relates to the field of gas transport, in particular to a compressor stations, gas treatment, including the resulting processing of associated petroleum gas at gas processing plants, to feed it into the gas lines.

Known compressor unit compressor stations of main gas pipeline containing a stationary gas turbine drive centrifugal supercharger, air-cleaning device, ducts and flues, in which gas turbine drive is implemented as a modular unit with a supply of air for cooling gas turbine drive and maintain high pressure (see, for example, U.S. Pat. Of the Russian Federation No. 2200255, 7F04D 25/02; 2002104572/06, 26.02.2002).

Known block-gas compressor station with Autonomous power supply system power containing uses released in the process of expanding gas useful energy expander to drive the generator (see, for example, U.S. Pat. EN 2270395 C2, F17D 1/04, 2006.01).

Known compressor station gas to increase the pressure of natural gas during its transportation containing gas compressor units, connected at the input of the process piping system training process gas and outlet installation cooling technology is whom gas, made in the form of an air cooler, and through valves and inlet and outlet piping from the main gas line (see, for example, U.S. Pat. 2277670, Russia, IPC F17D 1/07, No. 2004108954/06, 26.03.2004, publ. 10.06.06).

Known device for cooling a natural gas containing located on one shaft of the compressor and the expander and heat exchanger cooling gas input ("gas") which is connected to the output of the compressor, and the output to the input of the expander, whose output is connected by a pipeline with a trunk pipeline (see, for example, SU 726391 AND, F25B 11/00, 05.04.1980, 2 C.) prototype.

The present invention solves the problem of increasing the reliability of pipelines for pumping gas (pipelines) by filing them in compressed (compressed) gas low temperature using modular compressor stations with mounted gas compressor units with hattenbergstrasse.

To achieve the technical result at the compressor station containing gas compressor units, including centrifugal compressors driven by gas turbine engines, heat exchangers cooling gas piping and shut-off bodies, according to the invention in each of the pumping units on the same shaft and in one case with centrifugal magnetite who eat driven gas turbine engine, attorneysgeneral, and the output heat exchanger cooling gas whose input is connected to the output of the compressor is connected to the input of attorneyseries, the output of which is connected by a pipeline with a trunk gas pipeline, with gas-pumping units with hattenbergstrasse assembled in pairs in the block-containers with each of the pumping units of one block-container simultaneously or in sequence.

The hallmark of the invention is that in each of the gas compressor units compressor station on the same shaft and in one case with a centrifugal compressor driven by gas turbine engine, attorneysgeneral, and the output heat exchanger cooling gas whose input is connected to the output of the compressor is connected to the input of attorneyseries, the output of which is connected by a pipeline with a trunk gas pipeline, with gas-pumping units with hattenbergstrasse assembled in pairs in the block-containers with each of the pumping units of one block-container simultaneously or in sequence.

The operating experience of various pipelines shows the need to maintain minimum low (and in which moznosti constant) plus the temperature of the gas transported. For Northern permafrost areas (and there are many pipelines) is optimal maintenance even negative temperature gas transported, although because of the threat of loss of the crystalline (solid) carbon is undesirable (additional pollution of the pipeline). The cooling gas after compression in the compressor) in the traditional way (in heat exchangers air cooled gas, currently installed, as a rule, all gas turbine compressor stations of main gas pipelines) are not significantly reduce the temperature of the gas transported. If the ambient temperature is ˜+25° ... +35°in summer, to cool the gas after its compression in the compressor in an air cooler is really only possible to a temperature of ˜+35° ... +45°s, respectively. Transport by pipeline gas with the temperature leads to decrease in the reliability and reduce the operating time of the gas (especially in the Northern regions, taking into account the presence of permafrost). So, for example, for submission to the main gas pipeline of low (˜40 kgf/cm2) or high (˜76 kgf/cm2pressure gas from the gas compressor plants (GPP) (usually it dry cleaned gas pressure of 25...40 kgf/cm2and temperature ˜+50�B0; C) it is necessary to komprimierung and cooling use (booster) compressor station (CS) in order to bring the gas obtained at the output of the GEA to the values required for injection into the main pipeline.

The proposed compressor station gas to supply it in the gas main can be illustrated with the help of the drawings figure 1, figure 2 and figure 3, which circuit presents compressor unit with gasturbeschlage, compressor line (mini-COP), consisting of two placed in the container such gas compressor units and compressor station consisting of compressor lines.

In gas pumping units (GPU) with gasturbeschlage (compressor unit with "direct cooling" gas) (figure 1) in the same housing 1 and on the same shaft with the centrifugal supercharger (CN) 2, driven by gas turbine engine (GTE) 3 made attorneysgeneral (GTR) 4. The output of the compressor 2 is connected by a pipe 5 to the input of heat (e.g., air) cooling apparatus (preliminary) gas (AVO) 6, and the output AVO pipe 7 is connected to the input GTR, the output of which the pipe 8 is connected to the discharge plume of the compressor station (CS). Entrance CN is connected by a pipe 9 with suction train KS. In the pipeline about the binding HPA performed locking bodies 10, 11, 12, 13, 14, 15, 16.

Figure 2 presents the compressor line ("mini"-KS), where gas pumping units (GPU) with hattenbergstrasse 17 and 18 are placed in the container (module) 19 (air cooling apparatus gas (preliminary) 20 and 21 placed outside of the block container). In the connecting piping HPA 17 and 18 are installed AVO 20 and 21 and the locking bodies 22, 23, 24, 25, 26, 27, 28, 29. Conduit 30 is the input centrifugal blowers in HPA 17 and 18 are connected with suction train KS. The outputs of azotobacteria HPA 17 and 18 by the conduit 31 is connected to the discharge plume of the COP.

Figure 3 circuit presents compressor station, which is equipped with compressor lines CL 32, 33, 34 and 35, tied suction and discharge piping with shutoff bodies (position not specified).

Compressor unit with gasturbeschlage works as follows (see figure 1). The gas released from the GEA, the pipe 9 is supplied to the suction side (inlet) of the centrifugal blower 2 HPA. In ZN given GTZ, gas komprimerede (compressed) to a pressure considerably higher than the value required for submission to the main pipeline. After ZN pipeline 5 gas enters AVO, where it is cooled (preliminary), then line 7 is fed to the input installed in the housing 1 GTR, which expands to the Alenia, required for injection into the pipeline, with useful work at the same time, given the shaft of the compressor 2, and lowering the temperature of the gas. From GTR on line 8 gas required parameters enters the main gas pipeline of low pressure (for example, ˜40 kgf/cm2). Using the shut-off bodies 10, 11, 12, 13, 14, 15, 16, installed in piping HPA, provided by the connecting-disconnecting" HPA to the gas and the operation of the HPA.

If necessary, the supply of gas to the main gas pipeline high pressure (for example, ˜76 kgf/cm2) use compressor line CL, consisting of two HPA 17 and 18 placed in the container 19 (see figure 2). The gas coming from the intake manifold of the 30 through the open stop valve (faucet) 22 on the inlet (suction) HPA 17, then compressing it (with cooling in AVO) through the open stop valve 24 to the input of the HPA 18. The locking bodies 23, 25, 26 and 28 must be closed. After compression in HPA 18 (with cooling in AVO) gas through the open bodies 27 and 29 (check valve) on the discharge conduit 31 enters the main gas pipeline of high pressure. It is possible to komprimierung the gas is initially in HPA 18, and then in HPA 17. In this case, must be open locking bodies 23, 25, 26, 28, and closed 22, 24, 27, 29. It is also possible HPA 17 and 18 in parallel, under the Chi in the pipeline "low" pressure more gas (˜ dual performance HPA). When this locking bodies (cranes) 24 and 25 are closed, and 22, 23, 26, 27, 28, 29 open. The locking bodies (check valves) on 28 and 29 prevent the reverse flow of gas.

If necessary, feed into the main pipeline of large volumes of gas KS perform several compressor lines CL (mini-KS), for example four, 32, 33, 34, 35 (3), of which one (any) - backup. Shut-off bodies on suction and discharge piping "compressor" lines, compressor stations allow you to use different ways to connect CL 32, 33, 34, 35 to the main pipelines, low or high pressure.

The proposed compressor station (staffed HPA with hattenbergstrasse) can be used when pumping through main gas pipelines "conventional" natural gas.

Compressor station gas to supply it into the main pipeline containing gas compressor units, including centrifugal compressors driven by gas turbine engines, heat exchangers cooling gas piping and shut-off bodies, characterized in that each of the pumping units on the same shaft and in one case with a centrifugal compressor driven by gas turbine engine, attorneysgeneral, and the output t is bloomindale apparatus cooling gas, whose input is connected to the output of the compressor is connected to the input of attorneyseries, the output of which is connected by a pipeline with a trunk gas pipeline, with gas-pumping units with gasturbeschlage assembled in pairs in the block-containers with each of the pumping units of one block-container simultaneously or in sequence.



 

Same patents:

FIELD: heating.

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11 cl, 1 dwg

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9 cl, 5 dwg

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3 dwg

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1 dwg

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4 dwg

FIELD: oil industry.

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EFFECT: enhanced efficiency.

4 dwg

FIELD: gas industry.

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EFFECT: enhanced reliability of one-phase transporting.

2 dwg

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EFFECT: enhanced efficiency of storage and transporting.

16 cl, 13 dwg

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7 cl, 1 dwg

FIELD: engines and pumps.

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EFFECT: simplifying the removal of the engine or compression stages from the common housing with the rotor being kept in its housing by its bearings with no harm to its parts.

7 cl, 5 dwg

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