Device for adjusting backflow of supercharger

Abstract

The utility model relates to the technical field of mechanical equipment, in particular to a supercharger backflow adjusting device which comprises a supercharger air inlet pipeline, a supercharger air outlet pipeline and a gas buffer tank, and an inlet of the gas buffer tank is connected with the supercharger air outlet pipeline through a buffer air inlet pipeline. An outlet of the gas buffer tank is connected with the supercharger gas inlet pipeline through a buffer gas outlet pipeline, a first control valve is arranged on the supercharger gas outlet pipeline, the buffer gas inlet pipeline is connected to the supercharger gas outlet pipeline between the supercharger and the first control valve, and a second control valve is arranged on the buffer gas inlet pipeline. The air displacement of the supercharger can be adjusted according to the air volume required by the engine. When adjustment is not needed, the second control valve is closed, the first control valve is opened, and the pressurized natural gas is directly sent out; when adjustment is needed, the second control valve is opened, the first control valve is adjusted, a part of gas enters the gas buffer tank, the buffered gas enters the pressurization process again, and waste of resources is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical equipment, in particular to a device for regulating reflux of a supercharger. Background Art

[0002] Natural gas is a gaseous fuel, the main component of which is methane. After combustion, it can effectively drive natural gas engines and generate kinetic energy. Natural gas produces almost no particulate matter during the combustion process, which makes it an ideal clean fuel and has been widely used in the engine field.

[0003] A booster is a device that can compress gas into high-pressure gas. It is often used in the intermediate boosting process of natural gas engine gas sources in factories. Due to different working conditions, the engine will not work at full load for a long time, so the amount of gas it needs is also changing. However, since the booster equipment is always running and continuously pressurizing natural gas, it is undoubtedly a waste of resources if the excess natural gas is vented and ignited.

[0004] Therefore, it is necessary to propose an improvement to overcome the defects of the prior art. Utility Model Content

[0005] The utility model aims to solve the problems in the prior art and provide a device for regulating the reflux of a supercharger.

[0006] The technical solution of the utility model is:

[0007] A device for regulating the reflux of a supercharger includes a supercharger intake pipe connected to the air inlet of the supercharger, a supercharger exhaust pipe connected to the air outlet of the supercharger, and a gas buffer tank. The inlet of the gas buffer tank is connected to the supercharger exhaust pipe through the buffer intake pipe, and the outlet of the gas buffer tank is connected to the supercharger intake pipe through the buffer outlet pipe. The supercharger exhaust pipe is provided with a first control valve, and the buffer intake pipe is connected to the supercharger exhaust pipe between the supercharger and the first control valve. The buffer intake pipe is provided with a second control valve. When the flow does not need to be regulated, the second control valve is closed and the first control valve is opened. At this time, the natural gas pressurized by the supercharger is directly sent out through the supercharger exhaust pipe. When the flow needs to be regulated, the second control valve is opened and the first control valve is adjusted so that a part of the high-pressure gas enters the gas buffer tank through the buffer intake pipe, and the buffered gas re-enters the supercharging process. The flow of the gas discharged from the supercharger is regulated according to the gas volume required by the engine, thereby avoiding the waste of resources.

[0008] As a preferred technical solution, an air intake buffer tank is provided on the air intake pipeline of the supercharger, and the air intake buffer tank is provided between the buffer outlet pipeline and the supercharger. By providing the air intake buffer tank, the stability of the inlet pressure of the supercharger is ensured, thereby protecting the supercharger from the impact of unstable pressure.

[0009] As a preferred technical solution, an exhaust buffer tank is provided on the exhaust pipe of the supercharger, and the exhaust buffer tank is arranged between the supercharger and the buffer air intake pipe to prevent sudden pressure changes caused by direct discharge, thereby maintaining a relative stability of the system pressure.

[0010] As a preferred technical solution, a second safety valve is provided on the air intake buffer tank to prevent the supercharger from being damaged by excessive air intake pressure.

[0011] As a further preferred technical solution, a one-way valve is provided on the booster air inlet pipe, and the one-way valve is provided on the side of the buffer air outlet pipe away from the booster. The one-way valve is provided to prevent the natural gas refluxed from the gas buffer tank from flowing back to the natural gas inlet.

[0012] As a preferred technical solution, a flow meter is provided on the supercharger exhaust pipe, and the flow meter is provided on the side of the first control valve away from the supercharger. When adjusting the flow, the flow change can be observed in real time.

[0013] As a preferred technical solution, a first safety valve is provided on the supercharger exhaust pipe, and the first safety valve is provided between the supercharger and the buffer intake pipe. By providing the first safety valve, the situation that the supercharger is damaged by the excessive closing angle of the first control valve is prevented.

[0014] As a preferred technical solution, both the first control valve and the second control valve are ball valves.

[0015] The beneficial effects of the utility model are as follows:

[0016] The utility model provides a device for adjusting the reflux of a supercharger, which can adjust the reflux flow of the supercharger according to the different gas volumes required by the engine. When the flow does not need to be adjusted, the second control valve is closed and the first control valve is opened. At this time, the natural gas pressurized by the supercharger is directly sent out through the supercharger exhaust pipe; when the flow needs to be adjusted, the second control valve is opened and the first control valve is adjusted to allow a portion of the high-pressure gas to enter the gas buffer tank through the buffer intake pipe, and the buffered gas enters the intake buffer tank and re-enters the supercharging process, forming a reflux pressurization cycle, thereby avoiding waste of resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the overall structure diagram of the booster reflux regulating device of the utility model;

[0018] Among them, 1. Supercharger air intake pipe; 2. One-way valve; 3. Air intake buffer tank; 4. Supercharger; 5. Exhaust buffer tank; 6. First safety valve; 7. First control valve; 8. Flow meter; 9. Supercharger exhaust pipe; 10. Second control valve; 11. Buffer air intake pipe; 12. Gas buffer tank; 13. Buffer air outlet pipe; 14. Second safety valve. DETAILED DESCRIPTION

[0019] In order to make the technical means, technical features, utility model objectives and technical effects achieved by the utility model easy to understand, the utility model is further explained below with reference to specific illustrations.

[0020] like Figure 1 As shown, a device for regulating the reflux of a supercharger of the utility model comprises a supercharger air intake pipe 1, a supercharger exhaust pipe 9, and a gas buffer tank 12. The supercharger air intake pipe 1 and the supercharger exhaust pipe 9 are respectively connected to the air intake port of the supercharger 4 and the air outlet of the supercharger 4. A one-way valve 2 and an air intake buffer tank 3 are sequentially arranged on the supercharger air intake pipe 1 along the gas flow direction. An exhaust buffer tank 5, a first safety valve 6, a first control valve 7 and a flow meter 8 are sequentially arranged on the supercharger exhaust pipe 9 along the gas flow direction. The inlet of the gas buffer tank 12 is connected to the supercharger exhaust pipe 9 between the first safety valve 6 and the first control valve 7 through a buffer air intake pipe 11. A second control valve 10 is arranged on the buffer air intake pipe 11. The outlet of the gas buffer tank 12 is connected to the supercharger air intake pipe 1 between the one-way valve 2 and the air intake buffer tank 3 through a buffer air outlet pipe 13. A second safety valve 14 is arranged on the air intake buffer tank 3.

[0021] The natural gas enters the intake buffer tank 3 through the supercharger intake pipe 1 and then flows into the supercharger 4. The supercharger 4 pressurizes the natural gas and discharges it into the exhaust buffer tank 5. When the flow does not need to be adjusted, the second control valve 10 is closed and the first control valve 7 is opened. At this time, the natural gas pressurized by the supercharger 4 is directly sent out through the supercharger exhaust pipe 9. When the flow needs to be adjusted, the second control valve 10 is opened and the first control valve 7 is adjusted to allow a part of the high-pressure gas to enter the gas buffer tank 12 through the buffer intake pipe 11. The buffered gas enters the intake buffer tank 3 and re-enters the supercharging process to form a reflux pressurization cycle. The intake buffer tank 3 is provided with a second safety valve 14 to prevent the supercharger 4 from being damaged by excessive intake pressure. Since the gas pressure refluxed from the gas buffer tank 12 is greater than the pressure at the inlet of the supercharger intake pipe 1, the one-way valve 2 is provided to prevent the natural gas from flowing back. When adjusting the flow, the natural gas flow can be observed in real time through the flow meter 8. The setting of the first safety valve 6 can prevent the supercharger 4 from being damaged due to the excessive closing angle of the first control valve 7.

[0022] The above description is only a preferred embodiment of the utility model, and is not intended to limit the scope of implementation of the utility model. That is, all equivalent changes and modifications made according to the content of the patent application scope of the utility model should belong to the technical scope of the utility model.

Claims

1. A device for regulating the return flow of a supercharger, comprising a supercharger air inlet pipe (1) connected to an air inlet of a supercharger (4), and a supercharger exhaust pipe (9) connected to an air outlet of the supercharger (4), characterized in that: It also includes a gas buffer tank (12), the inlet of the gas buffer tank (12) is connected to the supercharger exhaust pipe (9) through a buffer air inlet pipe (11), the outlet of the gas buffer tank (12) is connected to the supercharger air inlet pipe (1) through a buffer air outlet pipe (13), a first control valve (7) is provided on the supercharger exhaust pipe (9), the buffer air inlet pipe (11) is connected to the supercharger exhaust pipe (9) between the supercharger (4) and the first control valve (7), and a second control valve (10) is provided on the buffer air inlet pipe (11).

2. The device for regulating the reflux of a supercharger according to claim 1, characterized in that: An air intake buffer tank (3) is provided on the air intake pipeline (1) of the supercharger, and the air intake buffer tank (3) is arranged between the buffer air outlet pipeline (13) and the supercharger (4).

3. The device for regulating reflux of a supercharger according to claim 1, characterized in that: An exhaust buffer tank (5) is provided on the supercharger exhaust pipe (9), and the exhaust buffer tank (5) is provided between the supercharger (4) and the buffer air intake pipe (11).

4. The device for regulating the reflux of a supercharger according to claim 2, characterized in that: The air intake buffer tank (3) is provided with a second safety valve (14).

5. The device for regulating reflux of a supercharger according to claim 1, characterized in that: The supercharger air inlet pipe (1) is provided with a one-way valve (2), and the one-way valve (2) is arranged on a side of the buffer air outlet pipe (13) away from the supercharger (4).

6. The device for regulating the reflux of a supercharger according to claim 1, characterized in that: The supercharger exhaust pipe (9) is provided with a flow meter (8), and the flow meter (8) is arranged on a side of the first control valve (7) away from the supercharger (4).

7. The device for regulating the reflux of a supercharger according to claim 1, characterized in that: The supercharger exhaust pipe (9) is provided with a first safety valve (6), and the first safety valve (6) is arranged between the supercharger (4) and the buffer air intake pipe (11).

8. A device for regulating reflux of a supercharger according to any one of claims 1 to 7, characterized in that: The first control valve (7) and the second control valve (10) are both ball valves.

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