A gas turbine generator set fuel system

Abstract

The utility model provides a kind of gas turbine generator set fuel system, including oil tank, temperature control device, auxiliary fuel pump, main fuel pump, oil quantity regulating device and atomizing nozzle connected in turn by oil pipeline, coarse oil filter is arranged on the oil pipeline between oil tank and temperature control device, first fine oil filter is arranged on the oil pipeline between auxiliary fuel pump and main fuel pump, second fine oil filter is arranged on the oil pipeline between main fuel pump and oil quantity regulating device, the outlet of auxiliary fuel pump is connected with ignition nozzle by branch pipeline, and starting ignition solenoid valve is arranged on branch pipeline.The utility model provides a kind of gas turbine generator set fuel system, compact structure, it is convenient to arrange and maintain in various gas turbine generator set, can adapt to the continuous stable operation demand under multiple working conditions, realize the efficient supply and reliable filtration of fuel, ensure the performance and durability of unit under various working conditions.

Description

Technical Field

[0001] This utility model relates to the field of vehicle-mounted gas turbine generator set technology, and in particular to a fuel system for a gas turbine generator set. Background Technology

[0002] Traditional gas turbine generator sets typically have simple fuel systems with high requirements for fuel quality. Especially in emergency power supply or remote area applications, fuel quality can easily lead to unstable fuel supply, affecting the unit's operating efficiency and reliability. Furthermore, traditional fuel systems often experience fluctuations in fuel atomization and combustion efficiency under high loads or extreme temperatures, limiting the generator set's performance. Utility Model Content

[0003] The purpose of this invention is to provide a fuel system for a gas turbine generator set that can solve the problems in the background art.

[0004] This utility model provides a fuel system for a gas turbine generator set, including a fuel tank, a coarse oil filter, a temperature control device, an auxiliary fuel pump, a main fuel pump, a first fine oil filter, a second fine oil filter, a fuel quantity regulating device, an atomizing nozzle, an ignition solenoid valve, and an ignition nozzle. The fuel tank, the temperature control device, the auxiliary fuel pump, the main fuel pump, the fuel quantity regulating device, and the atomizing nozzle are sequentially connected via fuel pipelines. The coarse oil filter is located on the fuel pipeline between the fuel tank and the temperature control device. The first fine oil filter is located on the fuel pipeline between the auxiliary fuel pump and the main fuel pump. The second fine oil filter is located on the fuel pipeline between the main fuel pump and the fuel quantity regulating device. The outlet of the auxiliary fuel pump is connected to the ignition nozzle via a branch pipeline, and the ignition solenoid valve is located on the branch pipeline.

[0005] The gas turbine generator set fuel system provided by this utility model also includes a residual fuel tank, and the outlet of the auxiliary fuel pump is connected to the residual fuel tank through a first residual fuel pipeline.

[0006] According to the fuel system of the gas turbine generator set provided by this utility model, the outlet of the main fuel pump is connected to the residual fuel tank through a second residual fuel pipeline.

[0007] The fuel system of the gas turbine generator set provided by this utility model also includes a third excess oil pipeline connected between the engine and the second excess oil pipeline.

[0008] According to the fuel system of the gas turbine generator set provided by this utility model, a fireproof valve is also provided on the oil delivery pipeline between the temperature control device and the auxiliary fuel pump.

[0009] The fuel system for a gas turbine generator set provided by this utility model further includes an overflow pipeline. The inlet end of the overflow pipeline is connected to the oil supply pipeline between the second fine oil filter and the oil quantity regulating device, and the outlet end of the overflow pipeline is connected to the oil supply pipeline between the fire damper and the auxiliary fuel pump. An overflow valve is provided at the inlet of the overflow pipeline.

[0010] According to the fuel system of the gas turbine generator set provided by this utility model, the fuel quantity regulating device is a three-way regulating valve, and a residual fuel return pipeline is also connected between the three-way regulating valve and the overflow pipeline.

[0011] According to the fuel system of the gas turbine generator set provided by this utility model, a first pressure sensor is provided on the oil delivery pipeline between the first fine oil filter and the main fuel pump.

[0012] According to the fuel system of the gas turbine generator set provided by this utility model, a second pressure sensor is provided on the oil delivery pipeline between the second fine oil filter and the oil quantity regulating device.

[0013] According to the fuel system of the gas turbine generator set provided by this utility model, a shut-off valve and a third pressure sensor are respectively provided on the oil supply pipeline between the oil quantity regulating device and the atomizing nozzle.

[0014] The gas turbine generator set fuel system provided by this utility model draws fuel from the fuel tank through an auxiliary fuel pump during operation. The fuel in the tank passes through a coarse oil filter and a temperature control device before being drawn into the inlet of the auxiliary fuel pump. After being pressurized, it enters the first fine oil filter and the main fuel pump. The main fuel pump then forces the fuel into the second fine oil filter and the fuel quantity regulating device, and finally into the atomizing nozzle. The system of this utility model also has a start-up ignition function. A portion of the fuel from the outlet of the auxiliary fuel pump passes through the start-up ignition solenoid valve and enters the ignition nozzle to achieve start-up ignition.

[0015] Because this system uses the generator set's built-in auxiliary fuel pump and main fuel pump, it utilizes the unit's own power to deliver fuel, eliminating the need for an external power source or auxiliary power source. This achieves autonomous fuel supply, reduces energy consumption, and enhances system independence, making it particularly suitable for scenarios without external power or mobile power supply. By setting up a coarse oil filter, a first fine oil filter, and a second fine oil filter, multiple filtration processes are achieved, effectively removing impurities and moisture and ensuring fuel quality. The use of atomizing nozzles enhances fuel atomization under the action of gas turbine intake, improving combustion efficiency and unit output performance while reducing emissions. The temperature control device strictly controls the fuel temperature, ensuring long-term reliability of temperature control under harsh environments such as vibration and alternating high and low temperatures. This results in high adaptability and durability, extending service life and reducing maintenance costs.

[0016] Therefore, the gas turbine generator set fuel system of this utility model has a compact structure and a highly integrated design that saves installation space, making it easy to arrange and maintain in various types of gas turbine generator sets. It can adapt to the continuous and stable operation requirements under various working conditions, achieve efficient fuel supply and reliable filtration, and ensure the performance and durability of the unit under various working conditions. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the fuel system of the gas turbine generator set of this utility model.

[0019] Explanation of reference numerals in the attached figures: 1. Fuel tank; 2. Coarse fuel filter; 3. Temperature control device; 4. Flame damper; 5. Residual fuel tank; 6. Auxiliary fuel pump; 7. First fine fuel filter; 8. Main fuel pump; 9. First pressure sensor; 10. Second fine fuel filter; 11. Overflow valve; 12. Second pressure sensor; 13. Fuel quantity regulating device; 14. Shut-off valve; 15. Third pressure sensor; 16. Atomizing nozzle; 17. Ignition nozzle; 18. Ignition solenoid valve; 19. Engine; 20. First residual fuel line; 21. Second residual fuel line; 22. Third residual fuel line; 23. Overflow line; 24. Residual fuel return line; 25. Fuel filter; 26. Liquid level sensor. Detailed Implementation

[0020] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] like Figure 1 As shown, the fuel system of the gas turbine generator set of this utility model embodiment includes a fuel tank 1, a coarse fuel filter 2, a temperature control device 3, an auxiliary fuel pump 6, a first fine fuel filter 7, a main fuel pump 8, a second fine fuel filter 10, a fuel quantity regulating device 13, an atomizing nozzle 16, an ignition nozzle 17, and an ignition solenoid valve 18. The fuel tank 1, the temperature control device 3, the auxiliary fuel pump 6, the main fuel pump 8, the fuel quantity regulating device 13, and the atomizing nozzle 16 are connected sequentially through fuel pipelines. The atomizing nozzle 16 and the ignition nozzle 17 are respectively installed inside the engine 19. The coarse fuel filter 2 is installed on the fuel pipeline between the fuel tank 1 and the temperature control device 3. The first fine fuel filter 7 is installed on the fuel pipeline between the auxiliary fuel pump 6 and the main fuel pump 8. The second fine fuel filter 10 is installed on the fuel pipeline between the main fuel pump 8 and the fuel quantity regulating device 13. The outlet of the auxiliary fuel pump 6 is connected to the ignition nozzle 17 through a branch pipeline, and the ignition solenoid valve 18 is installed on this branch pipeline.

[0024] The fuel system of the gas turbine generator set in this embodiment is integrated inside the gas turbine generator set and works in coordination with the main body of the gas turbine to ensure that the fuel is controllable and efficient from storage to combustion.

[0025] In operation, fuel is drawn from the fuel tank 1 by the auxiliary fuel pump 6. The fuel in the tank passes through the coarse fuel filter 2 and the temperature control device 3 before being drawn into the inlet of the auxiliary fuel pump 6. After pressurization, it enters the first fine fuel filter 7 and the main fuel pump 8. The main fuel pump 8 then forces the fuel into the second fine fuel filter 10 and the fuel quantity regulating device 13, finally entering the atomizing nozzle 16. Since the system in this embodiment also includes an ignition start-up function, a portion of the fuel from the outlet of the auxiliary fuel pump 6 passes through the ignition start-up solenoid valve 18 and enters the ignition nozzle 17 to achieve ignition start-up.

[0026] Because the system in this embodiment uses the generator set's built-in auxiliary fuel pump 6 and main fuel pump 8, it utilizes the unit's own power to deliver fuel without the need for an external power source or auxiliary power source, achieving autonomous fuel supply, reducing energy consumption and improving system independence. It is particularly suitable for scenarios without external power or mobile power supply. By setting up a coarse oil filter 2, a first fine oil filter 7, and a second fine oil filter 10, multiple filtrations of coarse and fine filtration can be achieved, effectively removing impurities and moisture and ensuring fuel quality. The atomizing nozzle 16 enhances the fuel atomization effect under the action of the gas turbine intake, improving combustion efficiency and unit output performance, and reducing emissions. By setting up a temperature control device 3, the fuel temperature can be strictly controlled, ensuring the long-term reliability of temperature control in harsh environments such as vibration and alternating high and low temperatures. It has high adaptability and durability, extends service life, and reduces maintenance costs.

[0027] Therefore, the gas turbine generator set fuel system of this utility model has a compact structure and a highly integrated design that saves installation space, facilitates its layout and maintenance in various types of gas turbine generator sets, can adapt to the continuous and stable operation requirements under various working conditions, achieves efficient fuel supply and reliable filtration, and ensures the performance and durability of the unit under various working conditions.

[0028] Specifically, a fuel filter 25 and a level sensor 26 are installed in the fuel tank 1. The fuel filter 25 can perform preliminary filtration of the fuel added to the fuel tank 1, and the level sensor 26 can detect the fuel level in the fuel tank 1 in real time.

[0029] Specifically, the temperature control device 3 can adopt a structure that combines an existing PID temperature controller and an electric heating jacket. The electric heating jacket is wrapped around the fuel pipeline to heat the fuel, and the PID temperature controller is used to control the electric heating jacket. The PID temperature controller enables precise control of the fuel temperature, ensuring the long-term reliability of the system's temperature control in harsh environments such as vibration and alternating high and low temperatures, thereby improving the system's adaptability and durability.

[0030] In some embodiments of this utility model, the fuel system of the gas turbine generator set further includes a residual fuel tank 5, and the outlet of the auxiliary fuel pump 6 is connected to the residual fuel tank 5 through a first residual fuel pipeline 20, so that the residual fuel after passing through the auxiliary fuel pump 6 is collected through the residual fuel tank 5.

[0031] The outlet of the main fuel pump 8 is connected to the residual fuel tank 5 through the second residual fuel line 21, so that the residual fuel after passing through the main fuel pump 8 is collected through the residual fuel tank 5.

[0032] The gas turbine generator set fuel system also includes a third excess fuel line 22 connected between the engine 19 and the second excess fuel line 21, so that the remaining fuel in the engine 19 can be collected through the excess fuel tank 5.

[0033] Specifically, a fire damper 4 is installed on the fuel pipeline between the temperature control device 3 and the auxiliary fuel pump 6. In the event of a fire, the fire damper 4 automatically closes, preventing the spread of flames and high-temperature smoke through the fuel pipeline, thus confining the fire to a localized area and buying valuable time for personnel evacuation and firefighting rescue operations.

[0034] In some embodiments of this utility model, the fuel system of the gas turbine generator set further includes an overflow pipe 23. The inlet end of the overflow pipe 23 is connected to the fuel supply line between the second fine oil filter 10 and the fuel quantity regulating device 13, and the outlet end of the overflow pipe 23 is connected to the fuel supply line between the fire damper 4 and the auxiliary fuel pump 6. An overflow valve 11 is provided at the inlet of the overflow pipe 23. The function of the overflow valve 11 is to provide protection for the fuel supply line. When the pressure reaches a certain value, it begins to release the pressure, allowing fuel to be discharged through the overflow pipe 23 and flow back into the fuel supply line before the auxiliary fuel pump 6.

[0035] Specifically, the fuel quantity regulating device 13 in this embodiment adopts a three-way regulating valve, which is connected to the overflow pipe 23 through the excess fuel return pipe 24. The three-way regulating valve can adjust the fuel quantity with high precision and speed, and adjust the fuel pressure and flow rate in real time according to the load to ensure stable and efficient combustion, while excess fuel can be discharged back into the overflow pipe 23 through the excess fuel return pipe 24.

[0036] Specifically, a first pressure sensor 9 is provided on the fuel supply line between the first fine oil filter 7 and the main fuel pump 8 to detect the fuel pressure before it enters the main fuel pump 8.

[0037] Specifically, a second pressure sensor 12 is provided on the oil supply line between the second fine oil filter 10 and the oil quantity regulating device 13 to detect the fuel pressure before it is regulated by the oil quantity regulating device 13.

[0038] Specifically, a shut-off valve 14 and a third pressure sensor 15 are respectively installed on the fuel supply line between the fuel quantity regulating device 13 and the atomizing nozzle 16. The third pressure sensor 15 is used to detect the fuel pressure entering the atomizing nozzle 16, and the shut-off valve 14 is used to control the opening and closing of the fuel supply line.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A fuel system for a gas turbine generator set, characterized in that, The system includes a fuel tank, a coarse fuel filter, a temperature control device, an auxiliary fuel pump, a main fuel pump, a first fine fuel filter, a second fine fuel filter, a fuel quantity regulating device, an atomizing nozzle, an ignition solenoid valve, and an ignition nozzle. The fuel tank, the temperature control device, the auxiliary fuel pump, the main fuel pump, the fuel quantity regulating device, and the atomizing nozzle are connected sequentially via fuel lines. The coarse fuel filter is located on the fuel line between the fuel tank and the temperature control device. The first fine fuel filter is located on the fuel line between the auxiliary fuel pump and the main fuel pump. The second fine fuel filter is located on the fuel line between the main fuel pump and the fuel quantity regulating device. The outlet of the auxiliary fuel pump is connected to the ignition nozzle via a branch line. The ignition solenoid valve is located on the branch line.

2. The fuel system for a gas turbine generator set according to claim 1, characterized in that, It also includes a residual fuel tank, and the outlet of the auxiliary fuel pump is connected to the residual fuel tank through a first residual fuel pipeline.

3. The fuel system for a gas turbine generator set according to claim 2, characterized in that, The outlet of the main fuel pump is connected to the fuel tank via a second fuel filler line.

4. The fuel system for a gas turbine generator set according to claim 3, characterized in that, It also includes a third excess oil line connecting the engine and the second excess oil line.

5. The fuel system for a gas turbine generator set according to claim 1, characterized in that, A fire damper is also provided on the fuel pipeline between the temperature control device and the auxiliary fuel pump.

6. The fuel system for a gas turbine generator set according to claim 5, characterized in that, It also includes an overflow pipeline, the inlet end of which is connected to the oil supply pipeline between the second fine oil filter and the oil quantity regulating device, and the outlet end of which is connected to the oil supply pipeline between the fire damper and the auxiliary fuel pump. An overflow valve is provided at the inlet of the overflow pipeline.

7. The fuel system for a gas turbine generator set according to claim 6, characterized in that, The oil quantity regulating device is a three-way regulating valve, and a residual oil return pipeline is also connected between the three-way regulating valve and the overflow pipeline.

8. The fuel system for a gas turbine generator set according to claim 1, characterized in that, A first pressure sensor is installed on the fuel line between the first fine oil filter and the main fuel pump.

9. The fuel system for a gas turbine generator set according to claim 1, characterized in that, A second pressure sensor is installed on the oil delivery pipeline between the second fine oil filter and the oil quantity regulating device.

10. The fuel system for a gas turbine generator set according to claim 1, characterized in that, A shut-off valve and a third pressure sensor are respectively installed on the oil supply pipeline between the oil quantity regulating device and the atomizing nozzle.

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