CN114216672A - Nozzle atomization characteristic test system and test method under air mixing state - Google Patents
Nozzle atomization characteristic test system and test method under air mixing state Download PDFInfo
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- CN114216672A CN114216672A CN202210011114.0A CN202210011114A CN114216672A CN 114216672 A CN114216672 A CN 114216672A CN 202210011114 A CN202210011114 A CN 202210011114A CN 114216672 A CN114216672 A CN 114216672A
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- 238000012360 testing method Methods 0.000 title claims abstract description 106
- 238000002156 mixing Methods 0.000 title claims abstract description 37
- 238000000889 atomisation Methods 0.000 title claims abstract description 27
- 238000010998 test method Methods 0.000 title claims description 7
- 239000000295 fuel oil Substances 0.000 claims abstract description 65
- 238000010438 heat treatment Methods 0.000 claims abstract description 48
- 239000000446 fuel Substances 0.000 claims abstract description 44
- 239000007789 gas Substances 0.000 claims abstract description 44
- 238000001816 cooling Methods 0.000 claims abstract description 41
- 238000000034 method Methods 0.000 claims abstract description 13
- 239000002737 fuel gas Substances 0.000 claims abstract description 4
- 239000003921 oil Substances 0.000 claims description 113
- 239000003350 kerosene Substances 0.000 claims description 23
- 230000001105 regulatory effect Effects 0.000 claims description 19
- 239000002245 particle Substances 0.000 claims description 11
- 239000002828 fuel tank Substances 0.000 claims description 8
- 230000003584 silencer Effects 0.000 claims description 7
- 239000003595 mist Substances 0.000 claims description 5
- 230000010363 phase shift Effects 0.000 claims description 5
- 238000004064 recycling Methods 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 abstract description 8
- 238000013461 design Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- Testing Of Engines (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a system and a method for testing the atomization characteristic of a nozzle in an air mixing state, which comprises the following steps: a test nozzle structure with a nozzle mounted inside; the air mixing subsystem provides air with different flow rates and pressures for the nozzles in the test nozzle structure; and the fuel subsystem provides fuel gas with different temperatures for the nozzles in the test nozzle structure. The air mixing subsystem simulates the head air inlet of the combustion chamber to provide air with different flow rates and pressures for the nozzles in the test nozzle structure, the fuel oil subsystem simulates the conditions of fuel oil heating and cooling to provide fuel oil gas with different temperatures for the nozzles in the test nozzle structure, the working state of the nozzles in the engine is truly simulated, the fuel oil sprayed by the nozzles is in a dotted triangle shape at an observation window in a figure, the measured parameters are the same as the working parameters of the actual nozzles, and the measured parameters can be used as parameter bases for optimizing the nozzles.
Description
Technical Field
The invention relates to a nozzle atomization characteristic test system and a test method under an air mixing state, and belongs to the technical field of nozzle characteristic tests.
Background
The fuel nozzle is a key component of the aircraft engine and plays an important role in determining the performance of the aircraft engine. For an engine combustion chamber, the fuel atomization quality, the liquid fog evaporation and the fuel concentration distribution have great influence on the combustion completeness, the ignition, the outlet temperature field, the emission pollution and the like. In the development of an aircraft engine, the improvement of the design level of a nozzle is one of key technologies for improving the atomization quality. Thus, the importance of nozzle design and experimental studies is increasing. The fuel nozzle belongs to a fine part, the design performance of the fuel nozzle cannot be guaranteed only by theoretical design, and the fuel nozzle can meet the requirement of engine development only by optimizing and adjusting through continuous tests.
At present, most of existing nozzle test systems are carried out under the conditions of not simulating head air intake of a combustion chamber and simulating fuel oil heating and cooling, the working state of a nozzle in an engine cannot be truly simulated, and meanwhile, the error between measured parameters and actual parameters is large, so that the measured parameters are difficult to serve as parameter bases for optimizing the nozzle.
Disclosure of Invention
In order to solve the technical problem, the invention provides a nozzle atomization characteristic test system in an air mixing state.
The invention provides a test method based on a nozzle atomization characteristic test system under an air mixing state.
The invention is realized by the following technical scheme.
The invention provides a nozzle atomization characteristic test system under an air mixing state, which comprises:
a test nozzle structure with a nozzle mounted inside;
the air mixing subsystem provides air with different flow rates and pressures for the nozzles in the test nozzle structure;
and the fuel subsystem provides fuel gas with different temperatures for the nozzles in the test nozzle structure.
The fuel subsystem comprises a fuel tank;
the inlet and the outlet of the fuel oil heating and cooling device are correspondingly communicated with the inlet and the outlet of the oil tank, and the fuel oil heating and cooling device heats oil in the oil tank;
the fuel filter B is communicated with the outlet of the oil tank through a manual valve B and filters oil discharged by the oil tank;
the safety valve, the air film regulating valve and the variable frequency oil pump are communicated with the outlet of the fuel filter B through a mass flow meter, the safety valve, the air film regulating valve and the variable frequency oil pump are gathered through pipelines and then communicated with the inlet of the heat exchanger through the explosion-proof electromagnetic valve and the manual regulating valve, and the outlet of the heat exchanger is correspondingly communicated with the upper oil inlet and the lower oil inlet of the nozzle through the fuel filter C and the manual valve C;
and the safety valves, the air film regulating valve and the variable frequency oil pump form two groups of parallel circuits.
The inlet and the outlet of the secondary heating/cooling heat conduction oil of the heat exchanger are correspondingly communicated with the inlet and the outlet of the fuel oil heating and cooling device; the inlet and the outlet of the secondary heating/cooling heat conduction oil of the heat exchanger are communicated with the inlet and the outlet of the fuel oil heating and cooling device through a valve and a pipeline to form a separate closed-loop heat conduction oil path, when the fuel oil heating and cooling device is required to carry out secondary heating/cooling on kerosene in the heat exchanger, the valve is opened, and when the secondary heating/cooling is not required, the valve is closed to enable the kerosene to only go through primary heating formed by the fuel oil filter B. The fuel adds the heat sink can be for can realizing the existing equipment that heats and cool down to kerosene.
The test nozzle structure comprises a test shell and a nozzle, wherein the middle part of the test shell is communicated with the middle part of the test shell; two oil inlet pipe orifices of the nozzle penetrate through the test shell and are used for being communicated with the fuel subsystem.
The nozzle is fixed inside the test shell through the nozzle fixing plate.
The fuel oil atomization device is characterized in that a transparent observation window is arranged on the test shell, an analyzer is arranged outside the test shell at the observation window, and the analyzer is used for measuring fuel oil sprayed from the nozzle to obtain atomization characteristic parameters such as the diameter, the particle size distribution and the velocity field distribution of fuel oil sprayed from the nozzle.
The test shell is provided with an air curtain interface, an air curtain is designed on the inner wall surface of the observation window in consideration of the situation that oil mist is likely to gather at the observation window during the test, the air curtain interface is arranged on the test shell, and the air curtain interface blows air to the observation window to ensure that the observation window is not shielded by the oil mist, so that the measurement precision is influenced.
The air mixing subsystem comprises an electric valve A with an empty inlet;
the inlet of the flowmeter is communicated with the outlet of the electric valve A;
the outlet of the flowmeter is communicated with the air inlet of the test shell through an air film valve D;
the inlet of the oil-gas separator is communicated with the discharge port of the test shell, the oil discharge port of the oil-gas separator and the discharge port of the test shell settled fuel oil are communicated with the oil return pump through the manual valve E and are communicated with the oil tank, and the separated oil of the oil-gas separator and the test shell settled fuel oil are returned to the oil tank under the action of the oil return pump;
the gas outlet of the oil-gas separator is communicated with a silencer for exhausting, and the outlet of the silencer is vacant.
The outlet of the electric valve A is communicated with the outlet of the oil-gas separator through the gas film valve B, clean gas is conveyed by the gas film valve B and is discharged and mixed with the gas of the oil-gas separator, the concentration of the gas discharged by the oil-gas separator is reduced, and the safety is improved.
And the pipelines formed by the flow meters and the air film valves D are two groups connected in parallel.
A test method based on the nozzle atomization characteristic test system under the air mixing state comprises the following steps:
the method comprises the following steps: the fuel oil heating and cooling device heats kerosene in a fuel tank in a primary mode, a manual valve B of a fuel outlet of the fuel tank is opened after the temperature of the fuel tank reaches a set temperature, the kerosene is filtered by a fuel oil filter B, enters a heat exchanger through two variable frequency oil pumps, a gas film regulating valve and a common regulating oil line, is discharged from a main oil line and an auxiliary oil line at the outlet of the heat exchanger in two ways and enters a nozzle, and the fuel oil subsystem simulates the conditions of heating and cooling the fuel oil to supply the fuel oil in the nozzle; when the temperature of the fuel oil still can not meet the requirement, conducting oil in the fuel oil heating and cooling device is guided into the heat exchanger through the heat conducting oil way to secondarily heat the fuel oil to the temperature required by the test; when the fuel oil needs to be cooled, the fuel oil heating and cooling device is not used for primary heating of the aviation kerosene in the oil tank, but the fuel oil heating and cooling device is directly used for cooling the heat exchanger through the heat conduction oil path, so that the fuel oil guided into the heat exchanger is cooled to reach the oil temperature required by the test.
Step two; the electric valve A is opened to supply air to the system, a large-flow air inlet pipeline and a small-flow air inlet pipeline are selected according to the requirement of test flow, the flow and the pressure of the air entering an air inlet of a test shell are adjusted through a flow meter and an air film valve D, kerosene sprayed out of a nozzle in the test is separated through an oil-gas separator, the kerosene is guided into an oil tank through an oil return pump through an oil return pipeline for recycling, the kerosene sprayed out of the nozzle is measured through a three-dimensional phase-shift Doppler particle analyzer to obtain atomization characteristic parameters such as the diameter of atomized particles, particle size distribution and velocity field distribution, the air mixing subsystem is adjusted according to the test requirement to simulate the state of an engine to supply air to the nozzle, and the simulation of head air inlet of a combustion chamber by the air mixing subsystem is realized.
The invention has the beneficial effects that: the air mixing subsystem simulates the head air inlet of the combustion chamber to provide air with different flow rates and pressures for the nozzles in the test nozzle structure, the fuel oil subsystem simulates the conditions of fuel oil heating and cooling to provide fuel oil gas with different temperatures for the nozzles in the test nozzle structure, the working state of the nozzles in the engine is truly simulated, the fuel oil sprayed by the nozzles is in a dotted triangle shape at an observation window in a figure, the measured parameters are the same as the working parameters of the actual nozzles, and the measured parameters can be used as parameter bases for optimizing the nozzles.
Drawings
FIG. 1 is a schematic layout of a test system according to the present invention;
FIG. 2 is a front view of a test nozzle configuration of the present invention;
FIG. 3 is a left side view of FIG. 2;
in the figure: 1-a fuel subsystem; 11-a fuel tank; 12-fuel oil cooling device; 13-fuel filter B; 14-gas film regulating valve; 15-variable frequency oil pump; 2-an air blending subsystem; 21-electric valve A; 22-a flow meter; 23-gas film valve D; 24-an oil-gas separator; 25-scavenge pump; 26-a silencer; 27-gas film valve B; 3-testing the nozzle structure; 31-a nozzle; 33-nozzle fixing plate; 34-air curtain interface; 35-observation window; 36-Analyzer 36.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
As shown in fig. 1-3.
The invention relates to a nozzle atomization characteristic test system under an air mixing state, which comprises:
a test nozzle structure 3 with a nozzle 31 mounted therein;
the test nozzle structure 3 comprises a test shell 32 with the middle part communicated with the test shell and a nozzle 31 fixed in the test shell 32 through a nozzle fixing plate 33; two oil inlet ports of the nozzle 31 penetrate the test housing 32 for communication with the fuel subsystem 1.
The test shell 32 is provided with a transparent observation window 35, an analyzer 36 is installed outside the test shell 32 at the observation window 35, the analyzer 36 is a three-dimensional phase shift doppler particle analyzer (PDPA), and the three-dimensional phase shift doppler particle analyzer measures the fuel sprayed from the nozzle 31 to obtain atomization characteristic parameters such as the diameter (SMD) of fuel particles sprayed from the nozzle 31, the particle size distribution and the velocity field distribution.
The test shell 32 is provided with an air curtain interface 34, so that in consideration of the situation that oil mist may be gathered at the observation window 35 during the test, an air curtain is designed on the inner wall surface of the observation window 35, the air curtain interface 34 is arranged on the test shell 32, and air is blown to the observation window 35 through the air curtain interface 34 to ensure that the observation window 35 is not shielded by the oil mist, so that the measurement accuracy is influenced.
An air blending subsystem 2 for supplying air to the test nozzle structure 3, the air blending subsystem 2 supplying air at different flow rates and pressures to the nozzles 31 in the test nozzle structure 3;
the air blending subsystem 2 comprises an electric valve A21 with an empty inlet;
the outlet of flow meter 22 communicates with the inlet of test housing 32 via membrane valve D23, as shown in the right inlet of fig. 2;
the pipelines formed by the flow meter 22 and the air film valve D23 are two groups connected in parallel;
the inlet of the oil-gas separator 24 is communicated with the outlet of the test shell 32, the oil outlet of the oil-gas separator 24 and the settled fuel outlet of the test shell 32 are communicated with the oil return pump 25 through the manual valve E and are communicated with the oil tank 11, and the separated oil of the oil-gas separator 24 and the settled fuel oil of the test shell 32 return to the oil tank 11 under the action of the oil return pump 25;
the gas outlet of the oil-gas separator 24 is communicated with a silencer 26 for exhausting gas, and the outlet of the silencer 26 is vacant;
the outlet of the electric valve A21 is communicated with the outlet of the oil-gas separator 24 through the gas film valve B27, and the gas film valve B27 assists in adjusting the air inlet of the test nozzle structure 3 and simultaneously conveys clean gas to be mixed with the gas discharged after the separation of the oil-gas separator 24, so that the content of the gas discharged by the oil-gas separator 24 is reduced, and the safety is improved.
A fuel subsystem 1 for supplying fuel to the test nozzle arrangement 3, the fuel subsystem 1 supplying fuel gas at different temperatures to the nozzles 31 in the test nozzle arrangement 3.
The fuel subsystem 1 comprises a fuel tank 11, wherein a manual valve A and a fuel filter A are communicated with the fuel tank 11 to form an interface communicated and butted with a fuel reservoir;
the inlet and the outlet of the fuel oil heating and cooling device 12 are correspondingly communicated with the inlet and the outlet of the oil tank 11, and the fuel oil heating and cooling device 12 heats oil in the oil tank 11;
a fuel filter B13 inlet in communication with the outlet of the tank 11 via a manual valve B, the fuel filter B13 filtering oil from the tank 11;
the safety valve, the air film regulating valve 14 and the variable frequency oil pump 15 are communicated with the outlet of the fuel filter B13 through a mass flow meter, the safety valve, the air film regulating valve 14 and the variable frequency oil pump 15 are gathered through pipelines and then communicated with the inlet of the heat exchanger 9 through an explosion-proof electromagnetic valve and a manual regulating valve, the outlet of the heat exchanger 9 is correspondingly communicated with the upper oil inlet and the lower oil inlet of the nozzle 31 through a main oil path and an auxiliary oil path of the fuel filter C and the manual valve C, for example, the upper oil inlet and the lower oil inlet indicating arrows in the figure 2;
the loops formed by the safety valves, the air film regulating valve 14 and the variable frequency oil pump 15 are two groups connected in parallel;
the inlet and the outlet of the secondary heating heat conduction oil of the heat exchanger 9 are correspondingly communicated with the inlet and the outlet of the fuel oil heating and cooling device 12; for example, the fuel oil heating and cooling device 12 is a test device for aviation fuel oil temperature regulation and cleaning, as shown in chinese patent CN201811125188.7, an inlet and an outlet of secondary heating heat conduction oil of the heat exchanger 9 are communicated with an inlet and an outlet of the fuel oil heating and cooling device 12 through a valve and a pipeline to form an independent closed-loop heat conduction oil path, when the fuel oil heating and cooling device 12 is required to perform secondary heating on kerosene in the heat exchanger 9, the valve is opened, and when the secondary heating is not required, the valve is closed to enable the kerosene to only pass through primary heating formed by the fuel oil filter B13. The fuel oil heating and cooling device 12 can be the existing equipment capable of heating and cooling the kerosene.
The working principle is as follows: the air mixing subsystem 2 simulates the head air intake of a combustion chamber to provide air with different flow rates and pressures for the nozzle 31 in the test nozzle structure 3, the fuel oil subsystem 1 simulates the conditions of fuel oil heating and cooling to provide fuel oil gas with different temperatures for the nozzle 31 in the test nozzle structure 3, the working state of the nozzle 31 in an engine is truly simulated, the fuel oil sprayed by the nozzle 31 is in a dotted triangle shape at an observation window 35 in the figure 2, the measured parameters are the same as the working parameters of the actual nozzle 31, and the measured parameters can be used as the parameter basis for optimizing the nozzle.
A test method based on the nozzle atomization characteristic test system under the air mixing state comprises the following steps:
the method comprises the following steps: filling an oil tank 11 with incoming oil from an oil depot, starting a fuel oil heating and cooling device 12 to primarily heat aviation kerosene in the oil tank 11 when the oil supply temperature of an engine needs to be simulated, starting a manual valve B at an oil outlet of the oil tank 11 after the temperature of the oil tank 11 reaches a set temperature, filtering the kerosene by a fuel oil filter B13, entering a heat exchanger 9 through two variable frequency oil pumps 15, an air film regulating valve 14 and a common regulating oil way, and then discharging the kerosene into a nozzle 31 from a main oil way and an auxiliary oil way at the outlet of the heat exchanger 9, so that the fuel oil subsystem 1 can simulate the conditions of heating and cooling the fuel oil to supply the fuel oil to the nozzle 31; when the temperature of the fuel oil still can not meet the requirement, the heat conducting oil in the fuel oil heating and cooling device 12 is guided into the heat exchanger 9 through a heat conducting oil way to carry out secondary heating on the fuel oil to the temperature required by the test; when the fuel oil needs to be cooled, the fuel oil heating and cooling device 12 is not used for primary heating of the aviation kerosene in the oil tank 11, but the fuel oil heating and cooling device 12 is directly used for cooling the heat exchanger 9 through a heat conduction oil path, so that the fuel oil led into the heat exchanger 9 is cooled to reach the oil temperature required by the test.
Step two; the electric valve A21 is opened to supply air to the system, a large-flow air inlet pipeline and a small-flow air inlet pipeline are selected according to the requirement of the test flow, the flow and the pressure of the air entering the air inlet of the test shell 32 are adjusted through the flowmeter 22 and the air film valve D23, the kerosene sprayed out of the nozzle 31 in the test is separated through the oil-gas separator 24, the kerosene is guided into the oil tank 11 through the oil return pipeline and the oil return pump 25 for recycling, the fuel sprayed out of the nozzle 31 is measured by the three-dimensional phase shift Doppler particle analyzer 16 to obtain the atomization characteristic parameters such as the diameter (SMD), the particle size distribution, the velocity field distribution and the like, the air mixing subsystem 2 is adjusted according to the test requirement to simulate the engine state to supply air to the nozzle 31, and the simulation of the air inlet of the head of the combustion chamber of the air mixing subsystem 2 is realized.
Claims (10)
1. A system and a method for testing the atomization characteristic of a nozzle in an air mixing state are characterized by comprising the following steps:
a test nozzle structure (3) with a nozzle (31) mounted therein;
an air blending subsystem (2) for providing air to the test nozzle structure (3), the air blending subsystem (2) providing air at different flow rates and pressures to the nozzles (31) in the test nozzle structure (3);
the fuel subsystem (1) is used for providing fuel for the test nozzle structure (3), and the fuel subsystem (1) is used for providing fuel gas with different temperatures for the nozzles (31) in the test nozzle structure (3).
2. The system and method for testing atomization characteristics of a nozzle under air blending conditions of claim 1, wherein: the fuel subsystem (1) comprises a fuel tank (11);
the inlet and the outlet of the fuel oil heating and cooling device (12) are correspondingly communicated with the inlet and the outlet of the oil tank (11), and the fuel oil heating and cooling device (12) heats oil in the oil tank (11);
a fuel filter B (13) inlet communicated with the outlet of the oil tank (11) through a manual valve B, wherein the fuel filter B (13) filters the oil discharged from the oil tank (11);
the safety valve, the air film regulating valve (14) and the variable frequency oil pump (15) are communicated with the outlet of the fuel filter B (13) through a mass flow meter, the safety valve, the air film regulating valve (14) and the variable frequency oil pump (15) are gathered through pipelines and then communicated with the inlet of the heat exchanger (9) through an explosion-proof electromagnetic valve and a manual regulating valve, and the outlet of the heat exchanger (9) is correspondingly communicated with the upper oil inlet and the lower oil inlet of the nozzle (31) through a main oil way and an auxiliary oil way of the fuel filter C and the manual valve C.
3. The system and method for testing atomization characteristics of a nozzle under air blending conditions of claim 2, wherein: and the safety valves, the air film regulating valve (14) and the variable frequency oil pump (15) form two parallel loops.
4. The system and method for testing atomization characteristics of a nozzle under air blending conditions of claim 2, wherein: the inlet and the outlet of the secondary heating/cooling heat conduction oil of the heat exchanger (9) are correspondingly communicated with the inlet and the outlet of the fuel oil heating and cooling device (12); the inlet and the outlet of the secondary heating/cooling heat conduction oil of the heat exchanger (9) are communicated with the inlet and the outlet of the fuel oil heating and cooling device (12) through a valve and a pipeline to form a single closed-loop heat conduction oil path.
5. The system and the method for testing the atomization characteristics of the nozzles under the air mixing condition according to claim 1 or 2, wherein: the test nozzle structure (3) comprises a test shell (32) with the middle part communicated with the test shell and a nozzle (31) fixed in the test shell (32) through a nozzle fixing plate (33); two oil inlet nozzles of the nozzle (31) penetrate through the test shell (32) and are used for being communicated with the fuel subsystem (1).
6. The system and method for testing atomization characteristics of a nozzle under air blending conditions of claim 5, wherein: a transparent observation window (35) is arranged on the test shell (32), an analyzer (36) is arranged outside the test shell (32) at the observation window (35), and the analyzer (36) measures the fuel sprayed by the nozzle (31); the test shell (32) is provided with an air curtain interface (34) so as to consider the situation that oil mist is possibly accumulated at the observation window (35) during the test.
7. The system and method for testing atomization characteristics of a nozzle under air blending conditions of claim 5, wherein: the air blending subsystem (2) comprises an electric valve A (21) with an empty inlet;
the inlet of the flowmeter (22) is communicated with the outlet of the electric valve A (21);
the outlet of the flowmeter (22) is communicated with the air inlet of the test shell (32) through an air film valve D (23);
an inlet of the oil-gas separator (24) is communicated with an outlet of the test shell (32), and an oil outlet of the oil-gas separator (24) and a settled fuel outlet of the test shell (32) are communicated with an oil return pump (25) and an oil tank (11) through a manual valve E;
the gas outlet of the oil-gas separator (24) is communicated with a silencer (26) for exhaust, and the outlet of the silencer (26) is vacant.
8. The system and method for testing atomization characteristics of a nozzle under air blending conditions of claim 1, wherein: the outlet of the electric valve A (21) is communicated with the outlet of the oil-gas separator (24) through a gas film valve B (27).
9. The system and method for testing atomization characteristics of a nozzle under air blending conditions of claim 8, wherein: and pipelines formed by the flow meter (22) and the air film valve D (23) are two groups connected in parallel.
10. A test method using the system for testing atomization characteristics of a nozzle of any one of claims 9 in an air-blending state, comprising the steps of:
the method comprises the following steps: the fuel oil heating and cooling device (12) is used for heating kerosene in an oil tank (11) in a primary mode, a manual valve B of an oil outlet of the oil tank (11) is opened after the temperature of the oil tank (11) reaches a set temperature, the kerosene is filtered by a fuel oil filter B (13), the kerosene enters a heat exchanger (9) through two variable frequency oil pumps (15), an air film regulating valve (14) and a common regulating oil way, and then is discharged from a main oil way and an auxiliary oil way at the outlet of the heat exchanger (9) in two ways and enters a nozzle (31); .
Step two; an electric valve A (21) is opened to supply air to the system, a large-flow air inlet pipeline and a small-flow air inlet pipeline are selected according to the requirement of the test flow, the flow and the pressure of the air entering an air inlet of a test shell (32) are adjusted through a flow meter (22) and an air film valve D (23), kerosene sprayed out of a nozzle (31) in the test is separated through an oil-gas separator (24), the kerosene is led into an oil tank (11) for recycling through an oil return pipeline and an oil return pump (25), and the fuel sprayed out of the nozzle (31) is measured through a three-dimensional phase shift Doppler particle analyzer (16).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210011114.0A CN114216672B (en) | 2022-01-05 | 2022-01-05 | Nozzle atomization characteristic test system and test method under air mixing state |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19838066A1 (en) * | 1998-08-21 | 2000-02-24 | Js Aupperle Gmbh Industrietech | Unit for functional testing of filling nozzle at fuel filling station; has hose connection, switch off unit, safety valve, nozzle opening and sensor pipe and can be sealed gastight against nozzle casing exterior by connection flanges |
| CN111426482A (en) * | 2020-05-06 | 2020-07-17 | 湖南汉能科技有限公司 | Aeroengine combustion chamber test bench |
| CN111721517A (en) * | 2020-06-24 | 2020-09-29 | 湖南汉能科技有限公司 | Nozzle and fuel oil system for fuel oil main pipe tester |
| CN212621469U (en) * | 2020-06-24 | 2021-02-26 | 湖南汉能科技有限公司 | Air pipeline system for nozzle and fuel oil main pipe performance tester |
| CN113074927A (en) * | 2021-04-01 | 2021-07-06 | 中国科学院工程热物理研究所 | Comprehensive basic test device and test method for fuel nozzle atomization characteristics |
-
2022
- 2022-01-05 CN CN202210011114.0A patent/CN114216672B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19838066A1 (en) * | 1998-08-21 | 2000-02-24 | Js Aupperle Gmbh Industrietech | Unit for functional testing of filling nozzle at fuel filling station; has hose connection, switch off unit, safety valve, nozzle opening and sensor pipe and can be sealed gastight against nozzle casing exterior by connection flanges |
| CN111426482A (en) * | 2020-05-06 | 2020-07-17 | 湖南汉能科技有限公司 | Aeroengine combustion chamber test bench |
| CN111721517A (en) * | 2020-06-24 | 2020-09-29 | 湖南汉能科技有限公司 | Nozzle and fuel oil system for fuel oil main pipe tester |
| CN212621469U (en) * | 2020-06-24 | 2021-02-26 | 湖南汉能科技有限公司 | Air pipeline system for nozzle and fuel oil main pipe performance tester |
| CN113074927A (en) * | 2021-04-01 | 2021-07-06 | 中国科学院工程热物理研究所 | Comprehensive basic test device and test method for fuel nozzle atomization characteristics |
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| CN114216672B (en) | 2024-03-19 |
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