CN111075573A - Ship gas turbine diesel oil flash evaporation spraying system - Google Patents
Ship gas turbine diesel oil flash evaporation spraying system Download PDFInfo
- Publication number
- CN111075573A CN111075573A CN201911220281.0A CN201911220281A CN111075573A CN 111075573 A CN111075573 A CN 111075573A CN 201911220281 A CN201911220281 A CN 201911220281A CN 111075573 A CN111075573 A CN 111075573A
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- China
- Prior art keywords
- diesel
- oil
- mass flow
- flow controller
- steel pipe
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000002283 diesel fuel Substances 0.000 title claims abstract description 36
- 238000005507 spraying Methods 0.000 title claims abstract description 17
- 238000001704 evaporation Methods 0.000 title abstract description 15
- 230000008020 evaporation Effects 0.000 title abstract description 15
- 238000002485 combustion reaction Methods 0.000 claims abstract description 31
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 22
- 239000010959 steel Substances 0.000 claims abstract description 22
- 238000000889 atomisation Methods 0.000 claims abstract description 13
- 239000007921 spray Substances 0.000 claims 2
- 238000007701 flash-distillation Methods 0.000 claims 1
- 238000001816 cooling Methods 0.000 abstract description 17
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 25
- 239000000295 fuel oil Substances 0.000 description 15
- 239000007788 liquid Substances 0.000 description 4
- 239000000446 fuel Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 241001665167 Solter Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/22—Fuel supply systems
- F02C7/224—Heating fuel before feeding to the burner
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/22—Fuel supply systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/22—Fuel supply systems
- F02C7/232—Fuel valves; Draining valves or systems
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pressure-Spray And Ultrasonic-Wave- Spray Burners (AREA)
Abstract
The invention provides a diesel flash evaporation spraying system of a ship gas turbine, which comprises an oil supply subsystem, an air heat exchange subsystem and an atomization regulating subsystem, wherein the oil supply subsystem comprises a booster pump, a high-precision oil filter and a mass flow controller which are sequentially connected, the air heat exchange subsystem comprises an annular return-shaped steel pipe arranged outside a gate, the inlet end of the annular return-shaped steel pipe is used as a diesel inlet and is communicated with the mass flow controller, the outlet end of the annular return-shaped steel pipe is connected with an outlet disc, diesel outlets with the same number as that of combustion chambers are arranged on the outlet disc, the atomization regulating subsystem comprises a main oil way and an auxiliary oil way which are identical in structure and are communicated with the diesel outlets, and the main oil way and the auxiliary oil way respectively comprise an electromagnetic valve, a mass flow controller and a nozzle which are sequentially. The invention introduces the annular steel pipe nested outside the combustion chamber casing, so that the temperature of the diesel oil is increased after the diesel oil absorbs most of heat of cooling air of the combustion chamber, and the condition of flash evaporation and spraying is achieved.
Description
Technical Field
The invention relates to a fuel injection system of a combustion chamber of a gas turbine, in particular to a diesel flash evaporation spraying system of a ship gas turbine, which is applied to the diesel flash evaporation spraying injection system.
Background
At present, the ship gas turbine is developing towards high temperature rise, high thrust-weight ratio and low pollution, the whole machine cooling requirement caused by the high temperature rise and the high thrust-weight ratio is increased, and how to reduce pollutant emission is a problem to be solved urgently in the liquid fuel combustion technology. Diesel oil is used as a cooling medium with great potential, a supercritical state is inevitably achieved after most of the whole engine heat load is absorbed, the supercritical state is rapidly converted into a subcritical state in the process of injecting the diesel oil into a combustion chamber, and partial fuel oil components are subjected to phase change to generate flash evaporation. However, no published literature is available for realizing the flash spraying of the diesel oil on the gas turbine of the ship, particularly realizing the process of increasing the temperature and enthalpy of the diesel oil. In view of the above, the invention provides a heat exchange mode of an annular steel pipe in a shape of a Chinese character hui, so as to primarily realize flash evaporation and spraying of diesel oil.
Disclosure of Invention
The invention aims to provide a ship gas turbine diesel flash evaporation spraying system, wherein an annular steel pipe is introduced to be nested outside a combustion chamber casing in the original ship gas turbine diesel injection system, so that the temperature of diesel is increased after the diesel absorbs most of heat of cooling air in the combustion chamber, and the system has flash evaporation spraying conditions.
The purpose of the invention is realized as follows: the oil supply subsystem comprises a booster pump, a high-precision oil filter and a mass flow controller which are connected in sequence, the air heat exchange subsystem comprises an annular return-shaped steel pipe arranged outside a gate, the inlet end of the annular return-shaped steel pipe is communicated with the mass flow controller as a diesel inlet, the outlet end of the annular return-shaped steel pipe is connected with an outlet disc, a diesel outlet with the same quantity as a combustion chamber is arranged on the outlet disc, the atomization regulation subsystem comprises a main oil way and an auxiliary oil way which are identical in structure and communicated with the diesel outlet, and the main oil way and the auxiliary oil way comprise an electromagnetic valve, a mass flow controller and a nozzle which are connected in sequence.
The invention also includes such structural features:
1. a temperature sensor and a pressure sensor are arranged on a pipeline between the high-precision oil filter and the mass flow controller.
2. A temperature sensor is arranged between the electromagnetic valve and the mass flow controller.
Compared with the prior art, the invention has the beneficial effects that: 1. when the invention is applied to the combustion chamber of the gas turbine, the radial sizes of the flame tube and the casing do not need to be changed, and the number of the circumferential heads of the combustion chamber can be kept unchanged. 2. When the invention is applied to the combustion chamber of the gas turbine, the inherent fuel oil supply system is not required to be changed, and only an air heat exchange system is required to be added at the downstream of the supply system. 3. The invention absorbs the heat of the cooling air through the diesel oil, can improve the cooling effect of the cooling air on the wall surface of the flame tube, and prevents the wall surface of the flame tube from burning. 4. According to the invention, the diesel absorbs the heat of cooling air, so that the temperature and enthalpy of fuel oil can be increased, the condition of flash evaporation spraying is achieved, the Solter average particle size of the diesel spraying is reduced to be below 20 mu m from the current 30 mu m, and the combustion performance of the combustion chamber of the gas turbine can be obviously improved.
Drawings
FIG. 1 is a schematic overall structure diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of an annular heat exchange tube in an air heat exchange subsystem in an embodiment of the present invention;
FIG. 3 is a schematic illustration of an embodiment of the present invention assembled with a marine gas turbine.
In the figure, 1 is an oil supply subsystem, 2 is an air heat exchange subsystem, 3 is an atomization regulation subsystem, 1-1 is a booster pump, 1-2 is a high-precision oil filter, 1-3 is a temperature sensor, 1-4 is a pressure sensor, 1-5 is a mass flow controller, 2-1 is an annular steel pipe, 2-2 is a diesel inlet, 2-3 is a diesel outlet, 3-1 is an electromagnetic valve, 3-2 is a temperature sensor, 3-3 is a mass flow controller, 3-4 is a nozzle, 4-1 is a central shaft, 4-2 is a supporting component, 4-3 is a casing, 4-4 is a flame tube, 4-5 is a turbine, 4-6 is an exhaust passage, and 4-7 is a housing.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-2, a flash evaporation spraying system for diesel oil of a ship gas turbine mainly comprises: the system comprises an oil supply subsystem 1, an air heat exchange subsystem 2 and an atomization regulation subsystem 3. The oil supply subsystem 1 is connected with the air heat exchange subsystem 2 through a flange, and the air heat exchange subsystem 2 is connected with the atomization regulation subsystem 3 through a flange.
The oil supply subsystem 1 mainly comprises a booster pump 1-1 and can provide the highest pressure of 10 MPa; 1-2 parts of a high-precision oil filter, wherein the filtering precision is 5 mu m; 1-3 temperature sensors, which can detect the maximum temperature of 100 ℃; 1-4 parts of pressure sensor and 0-15MPa of measuring range; and mass flow controllers (1-5). The pressure of the diesel oil can be increased to 10MPa by a booster pump, which is enough to exceed the corresponding saturated vapor pressure of each component in the diesel oil at high temperature, so that the diesel oil is in a liquid state in a fuel oil pipeline. In the oil supply subsystem 1, a booster pump 1-1 is connected with a high-precision oil filter 1-2 through a flange, a pressure sensor 1-4 and a temperature sensor 1-3 are connected with a fuel oil pipeline through threads, and the diesel oil flow under different combustion engine operation conditions is given through a mass flow controller 1-5. The booster pump pressurizes the diesel oil in the oil tank according to different working conditions, so that the pressure of the booster pump is far higher than the corresponding saturated vapor pressure of each component in the diesel oil at high temperature, and the diesel oil is in a liquid state in the fuel oil pipeline.
The air heat exchange subsystem 2 mainly comprises an annular steel pipe 2-1, a diesel oil inlet 2-2 and a diesel oil outlet 2-3. The length and the surrounding diameter of the annular steel pipe 2-1 are determined according to the size of a combustion chamber of the gas turbine, and the number of diesel oil outlets is determined according to the number of the heads of the combustion chamber. The heat exchange system can enable diesel to flow through the steel pipe to exchange heat with cooling air outside the flame tube of the combustion chamber before entering the combustion chamber, so that the temperature of the cooling air is reduced, and the enthalpy of the diesel is improved. In the air heat exchange subsystem 2, the length and the surrounding diameter of an annular steel pipe 2-1 depend on the size of a combustion chamber, and the annular steel pipe is connected with a casing 4-3 through a bracket lock and is nested outside the casing 4-3 of the combustion chamber. And branch circuits with the same number as the combustion chambers are divided from outlet pipelines 2-3 of the air heat exchange subsystem 2. When diesel oil flows in the annular steel pipe, the diesel oil can absorb heat brought by cooling air in the casing, so that the temperature of the cooling air is reduced, the cooling quality of the cooling air is improved, the temperature of the diesel oil is increased, the enthalpy is improved, and the condition of flash evaporation and spraying is achieved.
The atomization regulating subsystem 3 mainly comprises a main oil circuit and an auxiliary oil circuit which are respectively used for supplying a main combustion stage and a duty stage of the combustion chamber. Each oil way comprises an electromagnetic valve 3-1 and a temperature sensor 3-2, and the highest temperature can be measured to be 500 ℃; a mass flow controller 3-3 and a nozzle 3-4. The diesel oil supply is controlled by the electromagnetic valve to adapt to different gas turbine operation conditions, and the fuel oil flow is determined by the mass flow controller to adapt to the fuel oil grading proportion under different conditions. In the atomization regulation subsystem 3, the fuel pipeline from the upstream is divided into two paths by the head parts of the combustion chambers, an electromagnetic valve 3-1 of each path of pipeline is connected through a flange, a temperature sensor 3-2 behind the electromagnetic valve 3-1 is connected with the pipeline through threads, and a mass flow controller 3-3 behind the temperature sensor 3-2 is connected with the pipeline through a flange. And determining the closing of the electromagnetic valve 3-1 according to different working conditions, and determining the flow of each path of fuel oil according to the fuel oil grading proportion.
As shown in fig. 3, when the invention is applied, the air heat exchange subsystem 2 is connected with the casing 4-3, and a certain gap is ensured in the casing; then the diesel oil inlet 2-2 is connected with the oil supply subsystem 1, and finally the diesel oil outlet 2-3 is connected with the atomization regulation subsystem 3.
In summary, the present invention provides a flash evaporation spraying system for diesel oil of a ship gas turbine, which mainly comprises: the system comprises an oil supply subsystem, an air heat exchange subsystem and an atomization regulation subsystem. The oil supply subsystem is connected with the air heat exchange subsystem through a flange, and the air heat exchange subsystem is connected with the atomization regulation subsystem through a flange. In the oil supply subsystem, a booster pump is connected with a high-precision oil filter through a flange, a pressure sensor and a temperature sensor are connected with a fuel oil pipeline through threads, and the flow of the diesel oil under different operating conditions of the combustion engine is given through a mass flow controller. The booster pump pressurizes the diesel oil in the oil tank according to different working conditions, so that the pressure of the booster pump is far higher than the corresponding saturated vapor pressure of each component in the diesel oil at high temperature, and the diesel oil is in a liquid state in the fuel oil pipeline. In the air heat exchange subsystem, the length and the surrounding diameter of the annular steel pipe depend on the size of the combustion chamber, and the annular steel pipe is connected with the casing through a support lock and nested outside the casing of the combustion chamber. The outlet pipeline of the air heat exchange subsystem is divided into branches with the same number as that of the combustion chambers. When diesel oil flows in the annular steel pipe, the diesel oil can absorb heat brought by cooling air in the casing, so that the temperature of the cooling air is reduced, the cooling quality of the cooling air is improved, the temperature of the diesel oil is increased, the enthalpy is improved, and the condition of flash evaporation and spraying is achieved. In the atomization regulation subsystem, each combustion chamber head divides a fuel oil pipeline from the upstream into two paths, an electromagnetic valve of each pipeline is connected through a flange, a temperature sensor behind the electromagnetic valve is connected with the pipeline through threads, and a mass flow controller behind the sensor is connected with the pipeline through the flange. And determining the closing of the electromagnetic valve according to different working conditions, and determining the flow of each path of fuel oil according to the fuel oil grading proportion.
Claims (3)
1. The utility model provides a naval vessel gas turbine diesel oil flash distillation spraying system which characterized in that: the oil supply subsystem comprises a booster pump, a high-precision oil filter and a mass flow controller which are connected in sequence, the air heat exchange subsystem comprises an annular return-shaped steel pipe arranged outside a gate, the inlet end of the annular return-shaped steel pipe is communicated with the mass flow controller as a diesel inlet, the outlet end of the annular return-shaped steel pipe is connected with an outlet disc, a diesel outlet with the same quantity as a combustion chamber is arranged on the outlet disc, the atomization regulation subsystem comprises a main oil way and an auxiliary oil way which are identical in structure and communicated with the diesel outlet, and the main oil way and the auxiliary oil way comprise an electromagnetic valve, a mass flow controller and a nozzle which are connected in sequence.
2. The vessel gas turbine diesel flash spray system of claim 1, wherein: a temperature sensor and a pressure sensor are arranged on a pipeline between the high-precision oil filter and the mass flow controller.
3. The marine gas turbine diesel flash spray system of claim 1 or 2, wherein: a temperature sensor is arranged between the electromagnetic valve and the mass flow controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911220281.0A CN111075573A (en) | 2019-12-03 | 2019-12-03 | Ship gas turbine diesel oil flash evaporation spraying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911220281.0A CN111075573A (en) | 2019-12-03 | 2019-12-03 | Ship gas turbine diesel oil flash evaporation spraying system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111075573A true CN111075573A (en) | 2020-04-28 |
Family
ID=70312571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911220281.0A Pending CN111075573A (en) | 2019-12-03 | 2019-12-03 | Ship gas turbine diesel oil flash evaporation spraying system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111075573A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117869069A (en) * | 2024-03-13 | 2024-04-12 | 济南中科先行燃气轮机科技有限公司 | Flash air atomization system for waste heat utilization of gas turbine and control method |
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| DE2258718A1 (en) * | 1972-01-06 | 1973-07-19 | Westinghouse Electric Corp | GAS TURBINE |
| GB9608775D0 (en) * | 1996-04-27 | 1996-07-03 | Ford Motor Co | Fuel heating system |
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-
2019
- 2019-12-03 CN CN201911220281.0A patent/CN111075573A/en active Pending
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117869069A (en) * | 2024-03-13 | 2024-04-12 | 济南中科先行燃气轮机科技有限公司 | Flash air atomization system for waste heat utilization of gas turbine and control method |
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Application publication date: 20200428 |