CN219366172U - Liquid fuel pre-supply system suitable for gas turbine - Google Patents
Liquid fuel pre-supply system suitable for gas turbine Download PDFInfo
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- CN219366172U CN219366172U CN202320533111.3U CN202320533111U CN219366172U CN 219366172 U CN219366172 U CN 219366172U CN 202320533111 U CN202320533111 U CN 202320533111U CN 219366172 U CN219366172 U CN 219366172U
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Abstract
The utility model belongs to the field of liquid fuel pipeline systems, and relates to a liquid fuel prepositive supply system suitable for a gas turbine, which comprises a liquid fuel storage tank, wherein an oil return pipeline and an oil supply pipeline are connected to the liquid fuel storage tank, a tank front oil supply valve, a pump front oil supply valve, a temperature sensor, a screw pump, a first pressure sensor, an oil supply hand valve and a liquid fuel sledge oil inlet port are sequentially connected to the oil supply pipeline, a pressure-regulating exhaust assembly and a filtering assembly are connected to the oil supply pipeline in parallel, and the tank front oil return valve and the liquid fuel sledge oil return port are sequentially connected to the oil return pipeline. The utility model realizes the dynamic balance of the system, ensures the supply pressure of the liquid fuel, meets the flow condition of the inlet of the liquid fuel sledge, and ensures the normal operation of the liquid fuel sledge and the smooth proceeding of the ignition process of the gas turbine.
Description
Technical Field
The utility model belongs to the field of liquid fuel pipeline systems, and relates to a liquid fuel pre-supply system suitable for a gas turbine.
Background
The gas turbine is an internal combustion type power machine which uses continuously flowing gas as working medium to drive an impeller to rotate at high speed, converts the energy of fuel into useful work, sucks air from the external atmospheric environment, compresses the air step by step through an axial-flow compressor to boost the pressure, simultaneously the temperature of the air is correspondingly increased, compressed air is sent to a combustion chamber to be mixed with injected fuel to burn to generate high-temperature and high-pressure gas, and then the gas enters a turbine to expand to work, so that the chemical energy of liquid fuel is partially converted into mechanical work; the gas turbine liquid fuel prepositive supply system mainly comprises a liquid fuel storage tank, a liquid fuel supply pipeline, a liquid fuel return pipeline, a pressure regulating valve, an exhaust valve, a pump, a motor, a filter, a plurality of ball valves, a pressure sensor, a temperature sensor and the like.
The prior art has the following technical defects:
in the operation process of the prior liquid fuel pre-supply system, the liquid fuel sledge cannot normally operate due to the fact that the liquid fuel supply pressure cannot meet the inlet pressure condition of the liquid fuel sledge, and the liquid fuel flow is insufficient, so that multiple ignition failures are caused.
Disclosure of Invention
The utility model aims to solve the technical problems that: the liquid fuel pre-supply system for the gas turbine is suitable for overcoming the defects of the prior art, ensures that the liquid fuel supply pressure and flow meet the inlet conditions of a liquid fuel sledge, and ensures the normal operation of the liquid fuel sledge and the smooth progress of the ignition process of the gas turbine.
The utility model relates to a liquid fuel prepositive supply system suitable for a gas turbine, which comprises a liquid fuel storage tank, wherein an oil return pipeline and an oil supply pipeline are connected to the liquid fuel storage tank, the oil supply pipeline is sequentially connected with a tank front oil supply valve, a pump front oil supply valve, a temperature sensor, a screw pump, a first pressure sensor, an oil supply hand valve and a liquid fuel sledge oil inlet interface, the oil supply pipeline is connected with a pressure regulating exhaust assembly and a filtering assembly in parallel, and the oil return pipeline is sequentially connected with the tank front oil return valve and the liquid fuel sledge oil return interface.
Working process or working principle:
during operation, liquid fuel is conveyed to the screw pump through the oil supply pipeline by the liquid fuel storage tank, the front oil supply valve of the pump and the temperature sensor, the temperature sensor monitors whether the temperature of the liquid fuel meets the operation requirement of the gas turbine, the liquid fuel is pressurized to proper pressure through the screw pump, the liquid fuel needs to pass through the pressure sensor and the pressure regulating exhaust assembly before entering the liquid fuel sledge, a small amount of air in the liquid fuel is discharged to avoid cavitation phenomenon, and whether the liquid fuel is filtered through the filtering assembly is controlled by the oil supply hand valve.
The pressure regulating exhaust assembly comprises a pressure regulating pipeline connected in front of the pump oil supply valve and the oil supply hand valve, the pressure regulating pipeline is connected with a self-operated pressure regulating valve and a needle type exhaust valve, the self-operated pressure regulating valve is utilized to realize dynamic balance of the system and stabilize the working state of the screw pump, and air existing in liquid fuel is exhausted through the needle type exhaust valve, so that cavitation is avoided.
The filter component comprises a filter pipeline connected to the front and rear of the oil supply hand valve, and the filter pipeline is sequentially connected with the pre-filter hand valve, the duplex filter, the second pressure sensor and the post-filter hand valve, so that liquid fuel is caused to flow through the duplex filter to filter impurities in the liquid fuel, and the purity of the liquid fuel is ensured to meet the ignition requirement and the long-term combustion requirement.
The duplex filter is connected with a differential pressure sensor in parallel, and is used for measuring the differential pressure of the front end and the rear end of the duplex filter, and the differential pressure is used as the replacement basis of the filter element of the duplex filter.
The oil supply pipeline is connected with the oil return pipeline through the auxiliary pipeline, when the liquid fuel preposed supply system carries out self circulation, the liquid fuel sledge stops working, liquid fuel can return into the liquid fuel tank through the auxiliary pipeline, and when the liquid fuel sledge operates, part of oil return of the liquid fuel sledge can enter the liquid fuel sledge again through the auxiliary pipeline so as to meet the flow requirement of the liquid fuel sledge.
The oil return pipeline still be connected with the preceding time of pump and return the valve, return the valve throttle through before the pump, guarantee that liquid fuel supply pressure satisfies the entry condition of liquid fuel sledge, avoided the unable normal operating of liquid fuel sledge, the production of liquid fuel flow and pressure deficiency scheduling problem.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model realizes the dynamic balance of the system, ensures the supply pressure of the liquid fuel, meets the flow condition of the inlet of the liquid fuel sledge, and ensures the normal operation of the liquid fuel sledge and the smooth proceeding of the ignition process of the gas turbine.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present utility model.
In the figure: 1. a liquid fuel storage tank; 2. a tank front oil supply valve; 3. a pressure regulating pipeline; 4. a pump front oil supply valve; 5. a temperature sensor; 6. a screw pump; 7. a first pressure sensor; 8. self-operated pressure regulating valve; 9. a needle-type evacuation valve; 10. a prefilter hand valve; 11. an oil supply hand valve; 12. an oil supply line; 13. a liquid fuel skid oil inlet port; 14. a filtered hand valve; 15. a filter tube; 16. a second pressure sensor; 17. a differential pressure sensor; 18. an auxiliary pipeline; 19. a duplex filter; 20. a liquid fuel skid return port; 21. an oil return pipeline; 22. a pump front oil return valve; 23. an oil return valve in front of the tank.
Detailed Description
Example 1
As shown in fig. 1, the liquid fuel pre-supply system suitable for the gas turbine comprises a liquid fuel storage tank 1, wherein an oil return pipeline 21 and an oil supply pipeline 12 are connected to the liquid fuel storage tank 1, a tank front oil supply valve 2, a pump front oil supply valve 4, a temperature sensor 5, a screw pump 6, a first pressure sensor 7, an oil supply hand valve 11 and a liquid fuel skid oil inlet port 13 are sequentially connected to the oil supply pipeline 12, a pressure regulating exhaust component and a filtering component are connected to the oil supply pipeline 12 in parallel, and a tank front oil return valve 23 and a liquid fuel skid oil return port 20 are sequentially connected to the oil return pipeline 21; the pressure regulating and exhausting assembly comprises a pressure regulating pipeline 3 connected in front of a pump front oil supply valve 4 and an oil supply hand valve 11, the pressure regulating pipeline 3 is connected with a self-operated pressure regulating valve 8 and a needle type emptying valve 9, the self-operated pressure regulating valve 8 is utilized to realize dynamic balance of the system and stabilize the working state of the screw pump 6, and air existing in liquid fuel is discharged through the needle type emptying valve 9, so that cavitation is avoided; the filtering assembly comprises a filtering pipeline 15 connected to the front and rear parts of the oil supply hand valve 11, the filtering pipeline 15 is sequentially connected with a pre-filtering hand valve 10, a duplex filter 19, a second pressure sensor 16 and a post-filtering hand valve 14, so that liquid fuel is caused to flow through the duplex filter 19 to filter impurities in the liquid fuel, and the purity of the liquid fuel is ensured to meet the ignition requirement and the long-term combustion requirement; the duplex filter 19 is connected with a differential pressure sensor 17 in parallel, and is used for measuring the differential pressure of the front end and the rear end of the duplex filter 19, and the differential pressure is used as the replacement basis of the duplex filter element; the oil supply pipeline 12 and the oil return pipeline 21 are connected through the auxiliary pipeline 18, when the liquid fuel pre-supply system performs self-circulation, the liquid fuel sledge stops working, the liquid fuel can return into the liquid fuel tank through the auxiliary pipeline 18, and when the liquid fuel sledge operates, part of oil return of the liquid fuel sledge can enter the liquid fuel sledge again through the auxiliary pipeline 18 so as to meet the flow requirement of the liquid fuel sledge; the oil return pipeline 21 is also connected with a pre-pump oil return valve 22, and the pre-pump oil return valve 22 throttles to ensure that the liquid fuel supply pressure meets the inlet condition of the liquid fuel sledge, so that the problems that the liquid fuel sledge cannot normally operate, the liquid fuel flow and the pressure are insufficient and the like are avoided.
Working process or working principle:
during operation, liquid fuel is conveyed to the screw pump 6 through the oil supply pipeline 12 by the liquid fuel storage tank 1 through the oil supply pipeline 2 in front of the tank, the oil supply valve 4 in front of the pump and the temperature sensor 5, the temperature sensor 5 monitors whether the temperature of the liquid fuel meets the operation requirement of the gas turbine, the liquid fuel is pressurized to proper pressure through the screw pump 6, the liquid fuel enters the pressure regulating pipeline 3 through the pressure sensor before entering the liquid fuel sledge, the needle-type emptying valve 9 is utilized to remove a small amount of air in the liquid fuel to avoid cavitation, when the pressure of the liquid fuel in the pipeline exceeds 2 times of the outlet pressure of the screw pump, the pressure is released through the self-operated pressure regulating valve 8, the dynamic balance of the oil supply pipeline 12 and the working state of the screw pump 6 are realized, the liquid fuel is prevented from being blocked in the pipeline, when the self-circulation of the liquid fuel front supply system is carried out, the oil supply hand valve 11 is closed, the front hand valve 10 and the back hand valve 14 are simultaneously opened, the liquid fuel is enabled to flow back to the liquid fuel storage tank through the auxiliary pipeline 19 through the auxiliary pipeline 18 after the liquid fuel is enabled to enter the auxiliary pipeline 19, the liquid fuel is enabled to be filtered by the auxiliary pipeline 18, the pure fuel is enabled to meet the requirement of the liquid fuel in the right side of the ignition pipeline when the liquid fuel is met, the liquid fuel is required to be filtered by the liquid fuel is guaranteed to be in the right when the liquid fuel is required to be in the right of the combustion condition of the front of the pump, and the liquid sledge is 20% is required to be kept, and the liquid is required to be well, and the quality is 20 is guaranteed, and the liquid is well, and the liquid is required to be well, and the quality is well.
The utility model realizes the dynamic balance of the system, ensures the supply pressure of the liquid fuel, meets the flow condition of the inlet of the liquid fuel sledge, and ensures the normal operation of the liquid fuel sledge and the smooth proceeding of the ignition process of the gas turbine.
The description of the directions and the relative positional relationships of the structures, such as the description of the front, back, left, right, up and down, in the present utility model does not limit the present utility model, but is merely for convenience of description.
Claims (6)
1. A liquid fuel pre-supply system for a gas turbine, characterized by: including liquid fuel storage tank (1), be connected with oil return line (21) and oil supply pipeline (12) on liquid fuel storage tank (1), oil supply valve (2) before the jar, oil supply valve (4) before the pump, temperature sensor (5), screw pump (6), first pressure sensor (7), oil supply hand valve (11) and liquid fuel sledge advance oil interface (13) have been connected gradually on oil supply pipeline (12), oil return line (21) is last to have connected gradually oil return valve (23) before the jar and liquid fuel sledge oil return interface (20).
2. The liquid fuel pre-supply system for a gas turbine according to claim 1, wherein: the pressure regulating exhaust assembly comprises a pressure regulating pipeline (3) connected in front of the pump front oil supply valve (4) and the oil supply hand valve (11), and the pressure regulating pipeline (3) is connected with a self-operated pressure regulating valve (8) and a needle type exhaust valve (9).
3. The liquid fuel pre-supply system for a gas turbine according to claim 2, wherein: the filter assembly comprises a filter pipeline (15) connected to the front and rear of the oil supply hand valve (11), and the filter pipeline (15) is sequentially connected with a pre-filter hand valve (10), a duplex filter (19), a second pressure sensor (16) and a post-filter hand valve (14).
4. A liquid fuel pre-feed system for a gas turbine according to claim 3, wherein: the duplex filter (19) is connected with a differential pressure sensor (17) in parallel.
5. A liquid fuel pre-supply system for a gas turbine according to any one of claims 1-4, wherein: the oil supply pipeline (12) is connected with the oil return pipeline (21) through an auxiliary pipeline (18).
6. The liquid fuel pre-supply system for a gas turbine according to claim 5, wherein: the oil return pipeline (21) is also connected with a pump front oil return valve (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320533111.3U CN219366172U (en) | 2023-03-17 | 2023-03-17 | Liquid fuel pre-supply system suitable for gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320533111.3U CN219366172U (en) | 2023-03-17 | 2023-03-17 | Liquid fuel pre-supply system suitable for gas turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219366172U true CN219366172U (en) | 2023-07-18 |
Family
ID=87147662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320533111.3U Active CN219366172U (en) | 2023-03-17 | 2023-03-17 | Liquid fuel pre-supply system suitable for gas turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219366172U (en) |
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2023
- 2023-03-17 CN CN202320533111.3U patent/CN219366172U/en active Active
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