RU2567413C2 - Method of repair of main gas pipeline and mobile gas pumping unit for its implementation - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: defective section is disconnected from the main gas pipeline by shutting of block valves from both of its ends. Parallel to the block valves the main gas pipeline is connected with the bypass and bypass assembly. Gas from the defective section is pumped out by the liquid jet ejector by means of the liquid pump until creation in the defective section of the pressure no less than 1 bar. Then gas is bled into atmosphere until achievement of pressure in the defective section, close to atmospheric one, and it is vented with ambient air through the bypass by means of the ejector until formation in the defective section of non-explosive concentration of gas. After repair by the ejector air is evacuated from the repaired section until vacuum formation and the repaired section is filled through the bypass with gas from the gas pipeline. Air-gas mix is evacuated by the ejector from the repaired section into atmosphere and simultaneously the repaired section is filled with gas from the gas pipeline through the bypass.

EFFECT: improvement of safety of repair of the main gas pipeline and gas consumption reduction.

9 cl, 1 dwg

Description

The group of inventions relates to the field of engineering, in particular to the pumping of gas, and can be used in the repair and maintenance work on gas pipelines.

A known method of pumping gas from a disconnected section of the pipeline, in which the ejector ejects gas from a disconnected section of the pipeline. The next section of the gas pipeline next to the disconnected section is connected to the low-pressure cavity of the additional ejector. The nozzles of both ejectors are connected to the existing gas pipeline. First, gas is supplied from the existing gas pipeline main to the nozzle of the additional ejector and gas is pumped out from the section of the pipeline following the disconnected section, and gas is supplied from the additional ejector to the subsequent section of the pipeline. After that, gas is pumped out of the disconnected section of the pipeline by supplying gas to the ejector nozzle from the existing highway, followed by gas supply from this ejector to the section of the pipeline following the disconnected section (Patent RU No. 2140582 C1. Method for pumping gas from the disconnected section of the pipeline. - IPC: F04F 5/54. - 10/27/1999. Bull. No. 30).

A known method of pumping gas from a disconnected section of a gas pipeline, comprising supplying gas to an ejector nozzle and pumping gas from a disconnected section of a gas pipeline by this ejector. From the section following the disconnected section of the gas pipeline, gas is pumped out by a gas pumping unit. An ejector nozzle is connected to the section preceding the disconnected section, the outlet of the latter is connected to a parallel line of the gas pipeline or to the section of the gas pipeline following the disconnected section, then gas is supplied to the ejector nozzle from the pipeline section in front of the disconnected section, and gas is pumped from the disconnected section of the gas pipeline to the parallel string a gas pipeline or to a section of a gas pipeline next to the disconnected from which gas is pumped out by a gas pumping unit (Patent RU No. 2167343 C1. Method for pumping gas from a disconnected gas gas pipeline installation. - IPC: F04F 5/54. - 05.20.2001).

There is a method of pumping gas from a repaired section of a gas pipeline, in which gas from a disconnected section of a gas pipeline is supplied to the nozzle of one or a group of ejectors and gas is pumped out. If the pressure decreases, an additional booster device is installed on the pumped-out section and the pumping process continues. In this case, natural gas is used as the working fluid, and the potential energy of the gas pressure difference in front of the closed valve of the disconnected section and the gas pressure in the low-pressure chamber of the ejector is used as energy. If the required degree of gas evacuation is not achieved, the first stage compressor is turned on (Patent RU No. 2386862 C1. Method for pumping gas from a repaired section of the gas pipeline. - IPC: F04D 25/02, F17D 1/02, F04F 5/54, F04B 41 / 00. - 04/20/2010).

Known pump-ejector installation containing a pump, a liquid-gas separator with a discharge of liquid and gas pipelines, a liquid-gas ejector connected to the inlet to the discharge pipe of the pump and the output to the liquid-gas separator, and an inlet separator with pipelines for supplying a pumped medium and a discharge a liquid medium connected by gas to a pipe for supplying a passive medium of a liquid-gas ejector. The inlet separator is equipped with a nozzle connected to the pipeline for supplying a pumped medium, the latter is connected to a pipe for supplying a passive medium of a liquid-gas ejector. The gas outlet pipe is connected via gas to the inlet separator (Copyright certificate SU No. 1573238 A1. Pump-ejector installation. - IPC: F04F 5/54. - June 23, 1990. Bull. No. 23).

Known options for a mobile installation for pumping gas from a disconnected section of the main gas pipeline, including a supercharger consisting of a compressor with a gas turbine drive and an ejector. The low-pressure cavity of the ejector is in communication with the pumped-out section of the main gas pipeline, which is turned off. In one embodiment of the installation, the high-pressure nozzle of the ejector is connected to the compressor outlet, and the inlet to the compressor and the outlet of the ejector are connected to sections of the working gas pipeline. In another embodiment, the outlet of the ejector is connected to the inlet of the compressor, and the high-pressure nozzle of the ejector and the outlet of the compressor are connected to sections of the working gas pipeline (Patent RU No. 2108489 C1. Mobile installation for pumping gas from a disconnected section of the main gas pipeline (options). - IPC: F04D 25 / 02. - 04/10/1998).

A well-known mobile installation for pumping gas from a disconnected section of the main gas pipeline equipped with a bypass line, including a compressor with suction and discharge pipelines. The compressor is multistage and hydraulic. The compressor oil pump is equipped with a gas internal combustion engine. The pipeline for supplying gas to the engine is connected to the bypass line or to the disconnected section of the main gas pipeline. The suction pipe is connected to the disconnected section of the main gas pipeline and the first stage of the hydraulic compressor. The discharge pipe is connected to the bypass line and the last stage of the hydraulic drive compressor. Air heat exchangers are installed on the connecting pipelines connecting the stages of the hydraulic compressor to each other, and on the discharge pipe. The connecting pipelines are equipped with bends connecting the connecting pipelines after the heat exchangers along the gas with the bypass line and with the disconnected section of the main gas pipeline. Locking bodies are installed on pipelines and branches (Patent RU No. 2351806 C1. Mobile installation for gas pumping. - IPC: F04D 25/02. - 10.04.2009).

The closest analogue adopted for the prototype is the main gas pipeline containing at least two linear valves, each of which is equipped with a bypass unit. Each bypass unit is made in the form of a pipeline communicated with sections of the gas pipeline before and after the linear valve and equipped with two shut-off valves. A connector is made between the stopcocks in the pipeline, which is closed by the bypass pipe by means of a flange connection. In the bypass pipe installed in front of the gas pipeline under repair, an ejector is mounted, which is connected by a nozzle to the gas pipeline section in front of the gas pipeline under repair and to the gas pipeline under repair. The bypass pipeline of an adjacent bypass node of a parallel or the same gas pipeline string is provided with an additional flange connection, the ejector exit is connected to the latter (Patent RU No. 2167342 C1. Main gas pipeline. - IPC: F04F 5/54. - 05.20.2001). This technical solution is taken as a prototype.

The main disadvantage of the known technical solutions is the explosion hazard of repairing gas pipelines due to the presence of gas residues in the defective area and the high consumption of gas discharged into the atmosphere.

The main task to be solved by the claimed invention is directed is to increase the safety of repair of gas pipelines and reduce gas consumption.

The technical result is to increase the safety of repairing defective sections of gas pipelines and reduce gas consumption.

The specified technical result is achieved by the fact that in the known method of repairing the main gas pipeline, which includes disconnecting the defective section from the main gas pipeline by blocking the linear valves, connecting to the main gas pipeline parallel to the linear valves of the bypass and bypass assembly with an ejector, pumping gas from the disconnected section to the main gas pipeline by the ejector defective area, after which the bypass unit is disconnected and the linear valves of the main gas pipeline are opened, according to the proposed technical solution:

gas is pumped out of the disconnected section of the gas pipeline by a liquid jet ejector by means of a liquid pump integrated into the liquid circulation system, the latter is pumped into the ejector nozzle, from the mixing chamber of which the gas-liquid mixture is sent to a gas-liquid separator, in the latter, the liquid phase is separated from the gas, which flows into the condensate into the tank of the fluid circulation system, the latter is then sent to the pump, and the compressed gas to the main gas pipeline and gas evacuation is carried out until the pressure is at least 1 atm, after which the gas from the disconnected section is vented to the environment until atmospheric pressure is created in it, then the disconnected section is vented with air from the environment through an ejector until an explosive gas concentration is formed in the disconnected section, then the pump is turned off and repair the defective area, after which the air from the repaired area is pumped out by the ejector into the atmosphere until a vacuum is formed, the latter is filled with gas from the main through a bypass gas pipeline, then turn on the pump and ejector pumping the air-gas mixture from the repaired section to the atmosphere while filling the disconnected section with gas from the main gas pipeline through the bypass of the second linear valve, and after filling the repaired section with gas, open the linear valves of the main pipeline, then the bypass node is vented by the ejector and disconnect it from the main gas pipeline;

gas concentration control in the disconnected area during pumping and filling it with gas is carried out by a gas analyzer;

the liquid is precooled before being injected into the nozzle of a liquid jet ejector.

The specified technical result is achieved by the fact that in a known mobile gas-pumping installation for repairing a main gas pipeline containing a bypass and a bypass unit, connected in parallel with the main pipeline by flanges to shut-off valves on both sides of the linear valves disconnecting the defective section from the gas pipeline, the bypass node of one linear valve includes an ejector , the latter by means of a suction pipe is connected by a flange to a shut-off valve of the defective section, and bypass pipe - flange with gas shutoff valve, according to the proposed technical solution:

the bypass assembly contains a liquid-jet ejector, the channel for supplying a fluid flow to the nozzle of which is connected by a pressure pipe to the outlet of a liquid pump integrated in the liquid circulation system, and the mixing chamber is connected to a gas-liquid separator, the latter is made with a liquid reservoir, the gas cavity of the gas-liquid separator is connected to the main gas pipeline a bypass pipe equipped with a gas analyzer with a shut-off valve on the branch pipe, and the reservoir of the gas-liquid separator is connected by circulation by pipelines with an entrance to the liquid pump, while the bypass parallel to another linear valve is equipped with an underwater pipe with a shut-off valve in communication with the environment;

the liquid pump of the liquid circulation system is equipped with a gas internal combustion engine connected by a pipeline to the main gas pipeline;

pressure, suction and bypass pipelines of the bypass unit are equipped with pressure gauges;

the bypass assembly may further comprise a liquid cooler connected by circulation pipes to the reservoir of the gas-liquid separator on one side and on the other hand with the inlet of the liquid pump;

circulation pipelines are equipped with thermometers installed on both sides of the liquid cooler;

the suction pipe of the bypass unit is equipped with a nozzle with a shut-off valve in communication with the environment.

The analysis of the prior art carried out by the applicant made it possible to establish that there are no analogs characterized by sets of features identical to all the features of the claimed method for repairing a main gas pipeline and a mobile gas pumping installation. Therefore, each of the claimed technical solutions meets the condition of patentability "novelty."

The search results for known solutions in the art in order to identify features that match the distinctive features of the prototypes of each of the proposed technical solutions have shown that they do not follow explicitly from the prior art. From the prior art determined by the applicant, the influence of the transformations provided for by the essential features of each of the claimed technical solutions on the achievement of the specified technical result has not been revealed. Therefore, each of the claimed technical solutions meets the condition of patentability "inventive step".

The claimed technical solutions can be successfully used in the repair and maintenance work on gas pipelines. Therefore, the claimed technical solutions meet the condition of patentability "industrial applicability".

In the present application for the grant of a patent, the requirement of the unity of inventions is met, since the method of repairing a gas main and a mobile gas pumping unit for its implementation are intended for repair and maintenance work on gas mains. The claimed technical solutions solve the same problem - improving safety and reducing the time and cost of repair and maintenance work on gas pipelines.

In FIG. 1 schematically shows a mobile gas pumping unit for repairing a gas main.

The essence of the repair method of the main gas pipeline is as follows.

Repair of the main gas pipeline includes disconnecting the defective section from the main gas pipeline by blocking linear valves at both ends, connecting to the main gas pipeline parallel to the bypass linear valves and the bypass assembly with an ejector, pumping gas from the disconnected section to the main gas pipeline to an explosion-proof concentration and repairing the defective section after which disconnect the bypass unit and open the linear valves of the main gas pipeline. Bypass and bypass assembly are connected to the main gas pipeline by flanges to shut-off valves installed on the main gas pipeline on both sides of the linear valves. Pumping gas from a disconnected area is carried out in three stages. At the first stage, gas from the disconnected section through the suction pipe with an open shut-off valve is pumped out with a liquid jet ejector by means of a liquid pump built into the liquid circulation system, the latter is pre-cooled in the liquid cooler under the control of thermometers installed on the circulation pipelines at the inlet and outlet of the cooler. The liquid in the cooled state is pumped into the ejector nozzle, from the mixing chamber of which the gas-liquid mixture is sent to the gas-liquid separator, in the latter the liquid phase is separated from the gas, which flows in the form of condensate into the tank of the liquid circulation system, the latter is then sent to the pump. Compressed gas from the separator is sent to the main gas pipeline and the gas is evacuated until at least 1 atm pressure is created in the disconnected section under the control of a pressure gauge installed on the suction pipe. At the second stage, the gas remaining in the disconnected section through the suction pipe with an open shut-off valve is pumped into the environment by the ejector through the bypass pipe and a branch pipe connected to the environment, equipped with a gas analyzer, for which the shut-off valve on the gas pipe connected to the bypass pipe is closed and pumped out gas are controlled by a gas analyzer to a pressure of not more than 1 atm, and also under the control of a pressure gauge on the suction pipe. At the third stage, the disconnected section is vented with air from the environment, for which purpose the gas is pumped out of the disconnected section through the suction pipe with an open shut-off valve through the bypass pipe through the outlet pipe with the analyzer into the atmosphere, first to form a vacuum of -0.5 atm in the disconnected section of the gas pipeline , and also under the control of a pressure gauge on the suction pipe, followed by filling the disconnected area with air from the environment through a bypass with open shut-off valves and turned off in the supply portion and the bypass pipe to non-hazardous gas concentration is also controlled by the analyzer. With the achievement of gas concentration in the disconnected area within (3 ÷ 5)%, turn off the pump and repair the defective section of the main gas pipeline. After the repair is completed, the shut-off valves on the disconnected section, connected to the bypass and on the underwater bypass pipe, are closed, the air from the repaired section is pumped out by the ejector into the atmosphere until a vacuum of -0.5 atm is controlled by the pressure gauge on the suction pipe, after which the bypass shut-off valves are opened on both sides of the linear valve and the vacuum in the repaired area is filled with bypass gas through the bypass from the main gas pipeline to atmospheric pressure through a bypass, then the ejector is turned on and pumping is continued of air from the repaired portion of the bypass duct through the discharge pipe to the atmosphere with a gas analyzer with simultaneous filling of the disconnected portion of the gas main pipeline via a bypass controlled by a gas analyzer. After filling the repaired section with gas according to the gas analyzer to a concentration of at least (12.5-15.0)%, shut-off valves are closed and linear valves of the main pipeline are opened. Then, the bypass assembly is vented by the ejector, for which purpose the shut-off valve on the inlet pipe in communication with the suction pipe is opened, the ejector is turned on, and air is pumped from the environment through the separator through the bypass pipe and the discharge pipe into the atmosphere. At the end of ventilation, the pump is turned off and the bypass unit is disconnected from the main gas pipeline.

A mobile gas pumping installation for implementing the above-described method of repairing a gas main contains a bypass 1 and a bypass assembly 2 connected in parallel to the main pipeline 3 with flanges 4, 5, 6 and 7 to shut-off valves 8, 9, 10 and 11 on both sides of each of the two linear valves 12 and 13, disconnecting the defective section 14 from the main gas pipeline 3. The bypass assembly 2 includes a liquid-jet ejector 15, a liquid pump 16, a gas-liquid separator 17, and a flow cooler 18 of the circulating system fluid. The pump 16 of the fluid circulation system is equipped with a gas internal combustion engine connected by a pipeline to the main gas pipeline (not shown conventionally). The ejector 15 by means of a suction pipe 19, equipped with a pressure gauge 20, is connected to the shut-off valve 8 of the defective section 14. The suction pipe 19 is equipped with a pipe 21 with a shut-off valve 22 in communication with the environment. The channel for supplying a fluid flow to the nozzle of the ejector 15 is connected by a pressure pipe 23 equipped with a pressure gauge 24 to the outlet of the pump 16, and the mixing chamber is connected to the separator 17, the latter being made with a reservoir for circulating liquid. The gas cavity of the separator 17 is connected to the main gas pipeline 3 bypass pipe 25, equipped with a pressure gauge 26. The bypass pipe 25 is equipped with a gas analyzer 27 with a shut-off valve 28 on the outlet pipe 29. The separator tank 17 is connected by circulating pipes 30 to the flow cooler 18 of the liquid, which, in turn, connected to the inlet to the pump 16. The circulation pipes 30 before and after the flow cooler 18 are equipped with thermometers 31. Bypass 1, parallel to the linear valve 13, is equipped with an underwater pipe 32 with a porn crane 33 in communication with the environment.

The repair of the main gas pipeline is shown on the work of the proposed mobile pumping unit.

When carrying out repair or maintenance work on the gas main 3, the defective section 14 is disconnected by blocking the linear valves 12 and 13 at both ends of the defective section 14. By means of two flanges 8 and 9, in parallel, for example, to the linear valve 12 with the suction pipe 19 and the bypass pipe 25 2 on both sides of the linear valve 12 connect a mobile gas pumping unit with shut-off valve 22 on the inlet pipe 21 to the suction pipe 19 and the shut-off valve 28 on the outlet m pipe 29 from the bypass pipe 25 with a gas analyzer 27. Then, by means of a gas internal combustion engine connected by a pipe to the main gas pipeline, a liquid ejector 15 is started up to operate the liquid ejector 15, opening the shut-off valve 8 in the suction pipe 19 and the shut-off valve 9 in the bypass pipe in series 25, and a liquid-jet ejector 15 is pumping gas from the disconnected section 14 into the main gas pipeline 3 to an explosion-proof gas concentration of less than 4%. Gas evacuation is carried out in three stages. At the first stage, gas from the disconnected section 14 through the suction pipe 19 with an open shut-off valve 8 is pumped out by the ejector 15 by means of a pump 16 integrated into the liquid circulation system, the latter is pre-cooled in the liquid cooler 18 under the control of thermometers 31 installed on the circulation pipes 30 at the inlet and the outlet of the cooler 18, and in the cooled state, pump 16 is pumped into the nozzle of the ejector 15, from the mixing chamber of which the gas-liquid mixture is sent to the gas-liquid separator 17, in the last liquid phase they are separated from the gas, which flows in the form of condensate into the tank of the fluid circulation system, the latter is then sent through the cooler 18 to the pump 16, and the compressed gas from the separator 17 is sent via the bypass pipe 25 to the gas main 3 and the gas is pumped out to a pressure in the disconnected section 14 at least 1 atm under the control of the pressure gauge 20 and pressure in the bypass pipe 25 within 10 ÷ 75 atm under the control of the pressure gauge 26, after which the shut-off valve 9 is closed. At the second stage, the gas remaining in the disconnected section 14 is vented to a pressure of less than 1 atm under the control of the pressure gauge 20, either by opening the shut-off valves 10 and 32 on the bypass 1 and the shut-off valves 8 and 22 on the nozzle 21, or through the suction pipe 19 with the shut-off valve 8 open the ejector 15 is discharged into the environment through the separator 17 through the bypass pipe 25 and the outlet pipe 29 with an open shut-off valve 28, communicating with the environment and equipped with a gas analyzer 27, and the pumping of gas is carried out under the control of the gas analyzer 27 to a pressure more than 1 atm, and under the control of the pressure gauge 20 on the suction pipe 19. At the third stage, the disconnected section 14 is vented with air from the environment, for which purpose the gas is pumped out by the ejector 15 through the bypass separator 17 through the bypass separator 17 through the suction pipe 19 with the open shut-off valve 8 the pipeline 25 and the outlet pipe 29 with an open shut-off valve 28 and a gas analyzer 27 into the atmosphere, and first, before the formation of a vacuum in the disconnected section 14, up to -0.5 atm, also under the control of a pressure gauge 20 on the suction pipe de 19, followed by filling the disconnected section 14 with air from the environment through bypass 1 with the shut-off valve 10 open on the disconnected section 14 and the shut-off valve 32 on the bypass pipe 31 bypass 1 until an explosion-proof gas concentration is formed in the disconnected section 14 (within 3-5 )% under the control of the gas analyzer 27, after which the pump 16 is turned off and the defective section 14 of the main gas pipeline 3 is repaired. After the repair is completed, the shut-off valve 10 on the disconnected section 14 connected to the bypass 1 and the shut-off valve 32 on bypass pipe 31 bypass 1 is closed, air from the repaired section 14 is pumped out with a liquid-jet ejector 15 into the atmosphere until a vacuum is formed up to -0.5 atm, controlled by a pressure gauge 20 on the suction pipe 19, after which shut-off valves 10 and 11 of bypass 1 are opened on both sides of the linear 13 and vacuum in the repaired section 14 through bypass 1 are filled with gas from the main gas pipeline 3, then the ejector 15 is turned on and pumping of the air-gas mixture from the repaired section 14 is continued through the suction pipe d 19 and the separator 17 through the bypass pipe 25 through the branch pipe 29 with an open shut-off valve 28 and a gas analyzer 27 into the atmosphere while filling the repaired section 14 with gas from the main gas pipeline 3 through bypass 1 and open shut-off valves 10 and 11 to a concentration of (12.0 -15.0)% under the control of the gas analyzer 27. After filling the repaired section 14 with gas, close the shut-off valves 8 and 28, open the linear valves 12 and 13 of the main pipeline 3. Then, the bypass unit 2 is vented by the ejector 15 mobile pumping unit, for which the shut-off valve 22 is opened on the inlet pipe 21 in communication with the suction pipe 19, the pump 16 is turned on and the ejector 15 is used to pump air from the environment through the separator 17 through the bypass pipe 25 and the discharge pipe 29 with the shut-off valve 28 open and gas analyzer 27 into the atmosphere. At the end of ventilation, the pump 16 is turned off and the bypass unit 2 is disconnected by flanges 4 and 5 from the main gas pipeline 3, and the flanges 4 and 5 are closed with the corresponding plugs.

Using the proposed method for repairing a main gas pipeline and a gas pumping installation for its implementation will reduce gas consumption and improve the safety of repair of main gas pipelines.

Claims (9)

1. A method of repairing a main gas pipeline, including disconnecting a defective section from the main gas pipeline before repairing it by shutting off linear valves at both ends, attaching a mobile gas pumping unit to the main gas pipeline in parallel with the bypass valves and the bypass ejector, and pumping gas from the disconnected section to the ejector the main gas pipeline, and after repairing the defective area, the bypass unit is disconnected and the linear valves of the mag a gas pipeline, characterized in that the gas from the disconnected section of the gas pipeline is pumped out by a liquid jet ejector by means of a liquid pump integrated into the liquid circulation system, which is pumped into the ejector nozzle by a pump, and the gas-liquid mixture from the ejector mixing chamber is sent to a gas-liquid separator in which gas is separated from the liquid flowing in the form of condensate into the tank of the liquid circulation system, which is sent to the liquid pump, and the compressed gas to the main gas pipeline, the gas is pumped out until at least 1 atm pressure is created in the defective section, after which the gas is vented to the environment until pressure is created in the disconnected section close to atmospheric, and the defective section is vented with ambient air through the bypass through an ejector to ensure an explosion-proof gas concentration in the defective section, they turn off the pump, and after repairing the defective area, ejector ejects air from the repaired area to form a vacuum, the repaired area is filled with gas through the bypass and from the main gas pipeline, the gas-air mixture is pumped out by the ejector from the repaired section to the atmosphere and at the same time the repaired section is filled with gas from the main gas pipeline through the bypass, and after filling the repaired section with gas, the linear valves of the main pipeline are opened, the bypass unit is vented by the ejector and disconnected from the main gas pipeline. 2. The method according to claim 1, characterized in that in the disconnected section of the main gas pipeline, when pumping and filling it with gas, the gas concentration is monitored by a gas analyzer. 3. The method according to claim 1, characterized in that the liquid is cooled before being injected into the nozzle of a liquid-jet ejector. 4. A mobile gas pumping installation for repairing a main gas pipeline, comprising a bypass and a bypass assembly, configured to be connected in parallel with the main pipeline by flanges to shut-off valves located on both sides of the linear valves disconnecting the defective section from the gas pipeline, the bypass node of one linear valve containing an ejector connected by means of a suction pipe flange to a shut-off valve of a defective area, characterized in that the bypass is parallel to another The tap is equipped with an underwater pipe in communication with the environment and a shut-off valve, the bypass assembly contains a liquid jet ejector, a channel for supplying liquid to the nozzle of which is connected by a pressure pipe to a liquid pump integrated in the liquid circulation system, and the mixing chamber of the ejector is connected to a gas-liquid separator containing liquid tank and gas cavity intended for connection to the main gas pipeline by means of a bypass pipe equipped with a gas analyzer and a bypass m fitting with a stopcock, wherein the gas-liquid separator vessel connected to a circulation conduit with a fluid pump. 5. Installation according to claim 4, characterized in that the liquid pump of the liquid circulation system is equipped with a gas internal combustion engine configured to be connected by a pipeline to a gas main. 6. Installation according to claim 4, characterized in that the pressure, suction and bypass pipelines of the bypass assembly are equipped with pressure gauges. 7. Installation according to claim 4, characterized in that the bypass unit is equipped with a liquid cooler connected to the reservoir of the gas-liquid separator and to the liquid pump by means of circulation pipelines. 8. Installation according to claim 7, characterized in that the circulation pipelines are equipped with thermometers installed on both sides of the liquid cooler. 9. Installation according to claim 4, characterized in that the suction pipe of the bypass unit is equipped with a nozzle with a shut-off valve in communication with the environment.

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