CN216010428U

CN216010428U - Gas supply buffer system

Info

Publication number: CN216010428U
Application number: CN202122446193.1U
Authority: CN
Inventors: 柳建军; 付元垒
Original assignee: Jereh Oil and Gas Engineering Corp
Current assignee: Jereh Oil and Gas Engineering Corp
Priority date: 2021-10-11
Filing date: 2021-10-11
Publication date: 2022-03-11
Anticipated expiration: 2031-10-11

Abstract

The application relates to the technical field of gas power generation, in particular to a gas supply buffer system. The problem that the flow and the pressure are suddenly reduced to impact the combustion engine due to the fact that fluctuation of gas flow and pressure is easy to occur in the starting process of the standby compressor is solved. The gas supply buffer system comprises a first compressor, a first inlet, a first outlet, a first pipeline and a first control valve, wherein the first compressor is provided with the first inlet and the first outlet, the first inlet is communicated with the first pipeline, and the first pipeline is provided with the first control valve. The air storage tank is provided with a second inlet and a second outlet, and the second inlet is communicated with the first outlet through a second pipeline. The second pipeline is communicated with one end of the third pipeline. One end of the first pipeline is communicated with a third pipeline, and a second control valve is arranged on the third pipeline. The heater is provided with a third inlet and a third outlet, the third inlet is communicated with the second outlet through a fourth pipeline, and a third control valve is arranged on the fourth pipeline. And a fourth control valve and a pressure regulating valve are arranged on the fifth pipeline. The application is used for gas transportation.

Description

Gas supply buffer system

Technical Field

The application relates to the technical field of gas power generation, in particular to a gas supply buffer system.

Background

The gas pressure regulating station is an important part in a gas power plant, and mainly converts the gas coming from a pipe network into pressure, temperature and flow required by a gas turbine through gas processing equipment and pressure regulating equipment in the pressure regulating station, wherein a supercharger is used as the most important part in the pressure regulating station and is mainly used for regulating the natural gas pressure; due to the particularity of gas power generation, in order to ensure that fuel gas can be continuously and stably supplied to a combustion engine, two or more superchargers are generally arranged, and when one of the superchargers fails and stops, a standby supercharger is started within a certain time to meet the requirements of the combustion engine on flow and pressure; the interval between the stop of the main supercharger and the full-load operation of the spare supercharger is certain, the pressure and the flow at the front end of the internal combustion engine are reduced along with the stop of the fault supercharger during the interval, and the pressure and the flow at the front end of the internal combustion engine gradually return to the parameters before switching when the spare supercharger is started to the full-load operation.

In the process of realizing the starting of the standby compressor, at least the following problems exist: the fluctuation of gas flow and pressure is easy to occur, and the impact influence of sudden reduction of the flow and the pressure on the combustion engine is caused.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a gas supply buffer system for solve the in-process that reserve compressor starts, the fluctuation of gas flow and pressure easily appears, cause flow and pressure to reduce the problem of the impact influence to the combustion engine suddenly.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:

the embodiment of the application provides a gas supply buffer system, and this gas supply buffer system includes first compressor, gas holder and heater. The first compressor is provided with a first inlet and a first outlet, the first inlet is communicated with a first pipeline, and a first control valve is arranged on the first pipeline. The air storage tank is provided with a second inlet and a second outlet, and the second inlet is communicated with the first outlet through a second pipeline. The second pipeline is communicated with one end of a third pipeline, and the other end of the third pipeline is communicated with a first fuel gas conveying pipeline used for conveying non-supercharged fuel gas to the compressor unit. One end of the first pipeline is communicated with the third pipeline, and the third pipeline is provided with a second control valve and is positioned between the first pipeline and the second pipeline which are arranged on the third pipeline. The heater is provided with a third inlet and a third outlet, the third inlet is communicated with the second outlet through a fourth pipeline, a third control valve is arranged on the fourth pipeline, and the third outlet is communicated with a second fuel gas conveying pipeline used for discharging fuel gas after the pressurization of the compressor unit through a fifth pipeline. And a fourth control valve and a pressure regulating valve are arranged on the fifth pipeline.

The gas supply buffer system that this application embodiment provided. And opening a second control valve, and conveying non-pressurized fuel gas to the compressor unit to enter the gas storage tank through the first fuel gas conveying pipeline, the third pipeline and the second pipeline. And when the pressure in the gas storage tank is consistent with the pressure in the first gas conveying pipeline, closing the second control valve, and simultaneously opening the first compressor and the first control valve. At the moment, the fuel gas in the first fuel gas conveying pipeline enters the first compressor through the first pipeline for pressurization, and is discharged through the first outlet and enters the gas storage tank for storage. And when the pressure in the air storage tank reaches the set highest pressure value, closing the first control valve. And finishing the storage of the fuel gas in the gas storage tank. Two or more superchargers are arranged in the gas pressure regulating station (compressor unit), and when one of the superchargers fails and stops. In order to meet the normal requirements of the combustion engine on the pressure and the flow of the fuel gas. At this time, another spare compressor needs to be started urgently to supplement the flow and pressure in the pipeline at the rear end of the compressor unit. Since a certain time is required in the process of stopping the failed compressor and starting the backup compressor, the gas required during this time period is supplemented by the gas stored in the storage tank. And opening the third control valve and the fourth control valve. And the fuel gas is discharged through the second outlet and enters the fourth pipeline, and enters the heater through the third inlet to be heated. The heated fuel gas is discharged into a fifth pipeline through a third outlet, and the pressure of the fuel gas is regulated through a pressure regulating valve to meet the requirement of the combustion engine on the fuel gas pressure. The gas is finally supplied to the gas engine. The impact influence of sudden reduction of the flow and the pressure on the combustion engine caused by the fluctuation of the gas flow and the pressure is avoided.

Optionally, the gas supply buffer system further includes a first pressure transmitter, a second pressure transmitter, a first temperature transmitter, a second temperature transmitter, and a controller. The first pressure transmitter is arranged on the air storage tank and used for detecting the pressure in the air storage tank. And the second pressure transmitter is arranged on the fifth pipeline and is positioned between the fourth control valve and the pressure regulating valve, and the second pressure transmitter is used for detecting the pressure in the fifth pipeline. The first temperature transmitter is arranged on the fourth pipeline and located between the third control valve and the heater, and the first temperature transmitter is used for detecting the temperature of fuel gas in the fourth pipeline. The second temperature transmitter is installed on the heater and used for detecting the temperature in the heater. The controller is connected with the control end of the first control valve, the control end of the second control valve, the control end of the third control valve and the control end of the fourth control valve. The controller is connected with the output end of the first pressure transmitter, the output end of the second pressure transmitter, and the output end of the first temperature transmitter and the output end of the second temperature transmitter. The controller is connected with the output end of a fault alarm on the compressor unit. The controller is used for acquiring the pressure value acquired by the first pressure transmitter, the pressure value acquired by the second pressure transmitter and a signal of the fault alarm, and sending a control instruction to the control end of the first control valve, the control end of the second control valve, the control end of the third control valve, the control end of the fourth control valve and the first compressor. The control instruction is used for indicating the opening and closing of the first control valve, the second control valve, the third control valve, the fourth control valve and the first compressor.

Optionally, the fourth pipeline is communicated with a sixth pipeline and a seventh pipeline. And the communication part of the sixth pipeline and the fourth pipeline is positioned between the air storage tank and the third control valve. The communication position of the seventh pipeline and the fourth pipeline is positioned between the sixth pipeline and the third control valve. The sixth pipeline is communicated with the seventh pipeline, and a first manual ball valve and a safety valve are arranged on the sixth pipeline. And a second manual ball valve and a manual stop valve are arranged on the seventh pipeline.

Optionally, the gas supply buffer system further comprises a diffusion tower, and the seventh pipeline is connected with the diffusion tower.

Optionally, a first check valve is disposed on the first conduit. The second pipeline is provided with a second check valve, a fifth control valve and a third manual ball valve, and the second check valve is positioned between the first compressor and the fifth control valve. And the communication position of the third pipeline and the second pipeline is positioned between the fifth control valve and the third manual ball valve. The controller is connected with the control end of the fifth control valve and used for sending opening and closing instructions to the fifth control valve.

Optionally, a first pressure gauge and a first blowdown valve are arranged on the air storage tank, and the first pressure gauge is used for detecting the pressure in the air storage tank.

Optionally, a first thermometer and a fourth manual ball valve are arranged on the fourth pipeline, and the first thermometer is used for detecting the temperature in the fourth pipeline. The first thermometer is positioned between the third control valve and the first temperature transmitter, and the fourth manual ball valve is positioned between the first temperature transmitter and the heater.

Optionally, a second thermometer and a second blowdown valve are arranged on the heater, and the second thermometer is used for detecting the temperature in the heater.

Optionally, a fifth manual ball valve, an emergency shut-off valve, a second pressure gauge and a third check valve are arranged on the fifth pipeline. The fifth manual ball valve is positioned between the emergency cut-off valve and the heater. The emergency cut-off valve is positioned between the pressure regulating valve and the fifth manual ball valve. The second pressure gauge is positioned between the pressure regulating valve and the second pressure transmitter. The fourth control valve is located between the second pressure transmitter and the third check valve. The second pressure gauge is used for detecting the pressure in the fifth pipeline.

Optionally, the first control valve, the second control valve, the third control valve, the fourth control valve and the fifth control valve are all pneumatic ball valves.

Drawings

Fig. 1 is a schematic block diagram of a gas supply buffer system according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of another module of a gas supply buffer system according to an embodiment of the present disclosure;

fig. 3 is a schematic flow chart of a control system according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of a module of a sixth pipeline and a seventh pipeline according to an embodiment of the present disclosure;

FIG. 5 is a schematic block diagram of a first check valve and a second check valve according to an embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of a module of the first thermometer and the second thermometer according to an embodiment of the present disclosure.

Detailed Description

The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

In the description of the present application, it is to be understood that the terms "upper", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The embodiment of the present application provides a gas supply buffer system, which may include a first compressor 500, a gas storage tank 600, and a heater 700, as shown in fig. 1. The first compressor 500 has a first inlet and a first outlet, the first inlet is communicated with a first pipeline 800, and the first pipeline 800 is provided with a first control valve 3. The air tank 600 has a second inlet and a second outlet, the second inlet being in communication with the first outlet via a second conduit 810. The second pipeline 810 is communicated with one end of a third pipeline 820, and the other end of the third pipeline 820 is communicated with a first gas conveying pipeline 100 for conveying non-pressurized gas to the compressor unit 200. One end of the first pipeline 800 is communicated with the third pipeline 820, and the third pipeline 820 is provided with a second control valve 5 and is positioned between the first pipeline 800 and the second pipeline 810 arranged on the third pipeline 820. The heater 700 has a third inlet and a third outlet, the third inlet is communicated with the second outlet through a fourth pipeline 830, the fourth pipeline 830 is provided with a third control valve 6, and the third outlet is communicated with a second fuel gas delivery pipeline 300 for discharging the fuel gas pressurized by the compressor unit 200 through a fifth pipeline 840. The fifth pipe 840 is provided with a fourth control valve 9 and a pressure regulating valve 13. The pressure regulating valve 13 regulates the pressure of the medium released from the gas storage tank 600, and ensures the normal and stable operation of the pipeline pressure.

The gas supply buffer system that this application embodiment provided. The second control valve 5 is opened, and the non-pressurized fuel gas is delivered to the compressor unit 200 and enters the gas storage tank 600 through the first fuel gas delivery pipeline 100, the third pipeline 820 and the second pipeline 810. When the pressure in the air storage tank 600 is consistent with the pressure in the first fuel gas delivery pipe 100, the second control valve 5 is closed, and the first compressor 500 and the first control valve 3 are opened. At this time, the gas in the first gas delivery pipe 100 enters the first compressor 500 through the first pipe 800 to be pressurized, and is discharged through the first outlet to enter the gas storage tank 600 to be stored. When the pressure within the air tank 600 reaches the set maximum pressure value, the first control valve 3 is closed. The storage of the gas in the gas container 600 is completed. Two or more superchargers (compressors) in the gas pressure regulating station (compressor unit 200) are arranged, and when one of the superchargers fails and stops. In order to meet the normal demand of the combustion engine 400 for pressure and flow of the combustion gases. At this time, another spare compressor needs to be started urgently to supplement the flow and pressure in the pipeline at the rear end of the compressor unit 200. Since a certain time is required in the process of stopping the failed compressor and starting the backup compressor, the gas required during this time period is supplemented by the gas stored in the gas tank 600. The third control valve 6 and the fourth control valve 9 are opened. The gas is discharged into the fourth pipe 830 through the second outlet, and enters the heater 700 through the third inlet to be heated. The heated gas is discharged to the fifth pipeline 840 through the third outlet, and the pressure is adjusted by the pressure adjusting valve 13 to meet the requirement of the combustion engine 400 on the gas pressure. The gas is ultimately used to power the combustion engine 400. The impact influence of sudden reduction of the flow and the pressure on the combustion engine 400 caused by the fluctuation of the gas flow and the pressure is avoided.

In some embodiments of the present application, the gas make-up buffer system shown with reference to FIG. 2 further includes a first pressure transmitter 8, a second pressure transmitter 21, a first temperature transmitter 16, a second temperature transmitter 26, and a controller 66. The first pressure transmitter 8 is installed on the gas storage tank 600, and the first pressure transmitter 8 is used for detecting the pressure in the gas storage tank 600. A second pressure transmitter 21 is installed on the fifth pipe 840 between the fourth control valve 9 and the pressure regulating valve 13, the second pressure transmitter 21 being used to detect the pressure in the fifth pipe 840. The first temperature transmitter 16 is installed on the fourth pipe 830, the first temperature transmitter 16 is located between the third control valve 6 and the heater 700, and the first temperature transmitter 16 is used for detecting the temperature of the gas in the fourth pipe 830. A second temperature transmitter 26 is mounted on the heater 700, the second temperature transmitter 26 being used to detect the temperature inside the heater 700.

Based on the above, the control system of the present application is shown in fig. 3. The specific controller 66 is connected to a control end of the first control valve 3, a control end of the second control valve 5, a control end of the third control valve 6, and a control end of the fourth control valve 9. Controller 66 is coupled to the output of first pressure transmitter 8, the output of second pressure transmitter 21, the output of first temperature transmitter 16 and the output of second temperature transmitter 26. The controller 66 is connected to the output of the fault alarm 88 on the compressor rack 200. The controller 66 is configured to acquire the pressure value acquired by the first pressure transmitter 8, the pressure value acquired by the second pressure transmitter 21, and a signal of the failure alarm, and send a control instruction to the control end of the first control valve 3, the control end of the second control valve 5, the control end of the third control valve 6, the control end of the fourth control valve 9, and the first compressor 500. The control commands are used to instruct the first control valve 3, the second control valve 5, the third control valve 6, the fourth control valve 9, and the first compressor 500 to open and close.

Based on this, the first temperature transmitter 16 transmits a temperature signal to the controller 66, and the controller 66 controls the amount of the burner power of the heater 700 based on the temperature signal of the gas in the fourth pipe 830 through which the heater 700 communicates and the temperature signal from the second temperature transmitter 26 of the heater 700. Thereby realizing temperature control of the heater 700 and preventing the temperature of the discharged gas from being abnormal. When the controller 66 receives the abnormal pressure signal of the second pressure transmitter 21, the controller 66 sends a command to close the third control valve 6 to cut off the gas supply to the system, so as to ensure the safety of the system.

In some embodiments of the present application, the fourth pipeline 830 shown in fig. 4 is connected to a sixth pipeline 850 and a seventh pipeline 860. The communication between the sixth pipe 850 and the fourth pipe 830 is between the air tank 600 and the third control valve 6. The communication between the seventh line 860 and the fourth line 830 is between the sixth line 850 and the third control valve 6. The sixth pipe line 850 communicates with the seventh pipe line 860, and the first manual ball valve 18 and the relief valve 181 are provided in the sixth pipe line 850. The first manual ball valve 18 is normally in an open state. When the safety valve 181 fails, the first manual ball valve 18 is closed, and the safety valve 181 is removed and replaced. The safety valve 181 is a spring type automatic discharge valve, and when the pressure of the gas container 600 exceeds the safety pressure set by the safety valve 181, the safety valve 181 automatically opens to discharge gas, thereby ensuring the safety of the gas container 600. The seventh pipeline 860 is provided with a second manual ball valve 19 and a manual stop valve 191. The second manual ball valve 19 and the manual stop valve 191 are both in a closed state under normal conditions, when the system needs to be overhauled and maintained, the second manual ball valve 19 and the manual stop valve 191 can be opened manually to exhaust the gas in the gas storage tank 600, and the closed state can be recovered after the system is overhauled and maintained.

Based on the above, the gas supply buffer system further includes a diffusion tower 190, and the seventh pipeline 860 is connected to the diffusion tower 190. The gas is discharged to the outside through the diffusing tower 190 or is combusted, so that the damage caused by overhigh pressure in the gas storage tank 600 is avoided.

In some embodiments of the present application, a first check valve 22 is disposed on the first conduit 800 as shown with reference to FIG. 5. The second pipeline 810 is provided with a second check valve 23, a fifth control valve 4 and a third manual ball valve 2, and the second check valve 23 is located between the first compressor 500 and the fifth control valve 4. The third line 820 communicates with the second line 810 between the fifth control valve 4 and the third manual ball valve 2. The controller 66 is connected with the control end of the fifth control valve 4, and the controller 66 is used for sending opening and closing commands to the fifth control valve 4. A sixth manual ball valve 11 is disposed on the third pipeline 820, and the sixth manual ball valve 11 is located between the second control valve 5 and the first pipeline 800.

In order to facilitate visual checking of the pressure in the gas storage tank 600 and realization of pollution discharge of the gas storage tank 600, the gas storage tank 600 is provided with a first pressure gauge 7 and a first pollution discharge valve. The first pressure gauge 7 is used for detecting the pressure in the air storage tank 600. The first blowoff valve is composed of the sixth manual ball valve 17 and the blowoff cut-off valve 171, and since the gas storage tank 600 is a high-pressure container, the safe discharge of the cutoff flow, the pressure reduction and the pressure reduction is realized.

To facilitate visual inspection of the temperature within the fourth pipe 830. Referring to fig. 6, the fourth pipe 830 is provided with a first thermometer 15 and a fourth manual ball valve 10. The first thermometer 15 is used to detect the temperature in the fourth pipe 830. A first temperature gauge 15 is located between the third control valve 6 and the first temperature transmitter 16 and a fourth manual ball valve 10 is located between the first temperature transmitter 16 and the heater 700. The heater 700 is provided with a second thermometer 25 and a second blowdown valve 20, and the second thermometer 25 is used for detecting the temperature in the heater 700, so that the heating temperature of the heater 700 can be visually checked conveniently. The second blow-off valve 20 is a manual ball valve, which is normally closed, and is mainly used for blow-off of the heater 700. The fifth pipeline 840 is provided with a fifth manual ball valve 11, an emergency cut-off valve 12, a second pressure gauge 24 and a third check valve 14. The fifth manual ball valve 11 is located between the quick dump valve 12 and the heater 700. The quick action emergency valve 12 is located between the pressure regulating valve 13 and the fifth manual ball valve 11. A second pressure gauge 24 is located between the pressure regulating valve 13 and the second pressure transmitter 21. The fourth control valve 9 is located between the second pressure transmitter 21 and the third check valve 14. The second pressure gauge 24 is used for detecting the pressure in the fifth pipe 840. The first control valve 3, the second control valve 5, the third control valve 6, the fourth control valve 9 and the fifth control valve 4 are all pneumatic ball valves. The valves of the first pressure gauge 7, the second pressure gauge 24, the first pressure transmitter 8 and the second pressure transmitter 21 are needle valves, which are used as switch valves of the pressure gauge and the pressure transmitter, and are in a full-open state under normal conditions.

Based on the above basis, the following explains the operation process of the system of the present application: in a normal state, the gas required by the combustion engine 400 is boosted by the compressor unit 200 to be supplied to the combustion engine 400. The compressor assembly 200 is provided with three compressors (superchargers), two of which are used simultaneously to satisfy the flow rate required by the combustion engine 400, and the other is on standby.

Under normal conditions, the system of the application can automatically store a certain amount of fuel gas in the gas storage tank 600. The storage process is as follows: the sixth manual ball valve 1 and the third manual ball valve 2 are in an open state. The first control valve 3, the fifth control valve 4, and the second control valve 5 are in a closed state. The third control valve 6 is in a closed state. The second control valve 5 is opened by the controller 66(PLC controller), and the gas enters the gas tank 600. The air storage tank 600 is provided with a first pressure gauge 7 for displaying the pressure of the air storage tank 600 on site. The first pressure transmitter 8 on the gas storage tank 600 converts the measured pressure signal of the gas storage tank 600 into a 4-20 mA electric signal and transmits the signal to the controller 66. When the controller 66 judges that the pressure in the air storage tank 600 is consistent with the pressure in the first fuel gas conveying pipeline 100, the second control valve 5 is closed, and the first compressor 500, the first control valve 3 and the fifth control valve 4 are opened at the same time. At this time, the gas input by the first gas transmission pipeline 100 is pressurized by the first compressor 500 and then enters the gas storage tank 600 for storage.

In order to ensure the normal operation of the system, the backflow phenomenon does not occur. A first check valve 22 is provided at a first inlet of the first compressor 500. A second check valve 23 is provided at the first outlet. When the controller 66 detects that the pressure in the air storage tank 600 reaches the set maximum pressure value through the first pressure transmitter 8. The first compressor 500 is automatically stopped by the controller 66, and the first control valve 3 and the fifth control valve 4 are closed, at which time the gas storage is completed.

When two compressors of the compressor train 200 are operating properly, one of the compressors fails and alarms requiring an immediate shutdown. In order to be able to meet the normal demands of the combustion engine 400 on the pressure and flow of the combustion gas. At this time, another spare compressor needs to be started urgently to supplement the flow and pressure in the pipeline at the rear end of the compressor unit 200. This process takes time due to the stopping of the failed compressor and the starting of the backup compressor. The gas required during this period is supplemented by the gas stored in the gas tank 600.

The working process of releasing fuel gas by the gas storage tank 600 is as follows: when the controller 66 receives a signal from the fault alarm 88 on the compressor package 200, the controller 66 gives a control command to immediately open the third control valve 6 and the fourth control valve 9. The fourth manual ball valve 10 and the fifth manual ball valve 11 are in a normally open state. The gas enters the heater 700, is heated, passes through the emergency cut-off valve 12 and stabilizes the pressure through the pressure regulating valve 13. After passing through the fourth control valve 9 and the third check valve 14, the gas is merged with the second gas delivery pipe 300 at the outlet of the compressor unit 200 to be used by the combustion engine 400. In the process, the emergency cut-off valve 12 is in a normally open state, and when the outlet pressure is abnormal, the emergency cut-off valve 12 is immediately closed to ensure the safety of the system pressure. The third check valve 14 primarily prevents backflow due to high pressure in the second gas delivery line 300.

In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A gas makeup buffer system, comprising:

the first compressor is provided with a first inlet and a first outlet, the first inlet is communicated with a first pipeline, and a first control valve is arranged on the first pipeline;

the gas storage tank is provided with a second inlet and a second outlet, the second inlet is communicated with the first outlet through a second pipeline, the second pipeline is communicated with one end of a third pipeline, the other end of the third pipeline is communicated with a first gas conveying pipeline used for conveying non-pressurized gas to the compressor unit, one end of the first pipeline is communicated with the third pipeline, and a second control valve is arranged on the third pipeline; and

the heater is provided with a third inlet and a third outlet, the third inlet is communicated with the second outlet through a fourth pipeline, a third control valve is arranged on the fourth pipeline, the third outlet is communicated with a second fuel gas conveying pipeline used for discharging fuel gas after the pressurization of the compressor unit through a fifth pipeline, and a fourth control valve and a pressure regulating valve are arranged on the fifth pipeline.

2. The gas makeup buffer system according to claim 1, further comprising:

the first pressure transmitter is arranged on the air storage tank and is used for detecting the pressure in the air storage tank;

the second pressure transmitter is arranged on the fifth pipeline and is positioned between the fourth control valve and the pressure regulating valve, and the second pressure transmitter is used for detecting the pressure in the fifth pipeline;

the first temperature transmitter is arranged on the fourth pipeline, is positioned between the third control valve and the heater and is used for detecting the temperature of the fuel gas in the fourth pipeline;

the second temperature transmitter is arranged on the heater and is used for detecting the temperature in the heater; and

the controller is connected with the output end of the first pressure transmitter, the output end of the second pressure transmitter and the output end of the first temperature transmitter, the controller is connected with the output end of the fault alarm on the compressor set, the controller is used for collecting the pressure values obtained by the first pressure transmitter and the second pressure transmitter and obtaining the signals of the fault alarm, and sending control instructions to the control end of the first control valve, the control end of the second control valve, the control end of the third control valve and the control end of the fourth control valve and the first compressor, and the control instructions are used for indicating the first control valve, the second control valve, the control end of the third control valve and the control end of the fourth control valve, The second control valve, the third control valve, the fourth control valve and the first compressor are opened and closed.

3. The gas make-up buffer system according to claim 2, wherein a sixth pipeline and a seventh pipeline are communicated with the fourth pipeline, a communication position between the sixth pipeline and the fourth pipeline is between the gas storage tank and the third control valve, a communication position between the seventh pipeline and the fourth pipeline is between the sixth pipeline and the third control valve, the sixth pipeline is communicated with the seventh pipeline, the sixth pipeline is provided with a first manual ball valve and a safety valve, and the seventh pipeline is provided with a second manual ball valve and a manual stop valve.

4. The gas makeup buffer system according to claim 3, further comprising:

and the seventh pipeline is connected with the diffusion tower.

5. The gas make-up buffer system according to claim 3, wherein a first check valve is disposed on the first pipeline, a second check valve, a fifth control valve and a third manual ball valve are disposed on the second pipeline, the second check valve is located between the first compressor and the fifth control valve, a communication point between the third pipeline and the second pipeline is located between the fifth control valve and the third manual ball valve, the controller is connected to a control end of the fifth control valve, and the controller is configured to issue an opening and closing instruction to the fifth control valve.

6. The gas make-up buffer system according to claim 5, wherein a first pressure gauge and a first purge valve are disposed on the gas tank, and the first pressure gauge is used for detecting the pressure in the gas tank.

7. The gas make-up buffer system of claim 6, wherein a first thermometer and a fourth manual ball valve are disposed on said fourth pipeline, said first thermometer being used for detecting the temperature in said fourth pipeline, said first thermometer being located between said third control valve and said first temperature transmitter, said fourth manual ball valve being located between said first temperature transmitter and said heater.

8. The gas make-up buffer system of claim 7, wherein a second thermometer and a second blowdown valve are disposed on the heater, the second thermometer being configured to detect a temperature within the heater.

9. The gas make-up buffer system according to claim 8, wherein a fifth manual ball valve, an emergency shutoff valve, a second pressure gauge and a third check valve are disposed on the fifth pipeline, the fifth manual ball valve is located between the emergency shutoff valve and the heater, the emergency shutoff valve is located between the pressure regulating valve and the fifth manual ball valve, the second pressure gauge is located between the pressure regulating valve and the second pressure transmitter, the fourth control valve is located between the second pressure transmitter and the third check valve, and the second pressure gauge is used for detecting the pressure in the fifth pipeline.

10. The gas make-up buffer system according to any one of claims 5 to 9, wherein the first control valve, the second control valve, the third control valve, the fourth control valve and the fifth control valve are all pneumatic ball valves.