CN115493831A - Oil-gas separation performance evaluation test method - Google Patents
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Abstract
The invention relates to an oil-gas separation performance evaluation test method, which comprises the following steps: preparing ferromagnetic particles for testing; heating lubricating oil in an oil storage tank by a heater, sending the heated lubricating oil into an oil-gas mixing device through an oil pump and a first liquid flow meter, and sending air into the oil-gas mixing device through an air compressor after passing through an air filter and a first gas flow to realize oil-gas mixing; adding the prepared ferromagnetic particles into an oil-gas mixing device through a particle feeding device to be mixed with oil gas; sending the mixed oil gas added with ferromagnetic particles in the oil-gas mixing device into a three-phase vortex separator for separation, discharging the separated gas after passing through a second gas flowmeter, and sending the separated lubricating oil into an oil storage tank after passing through a second liquid flowmeter; after separation is completed, the separation efficiency of lubricating oil, the separation efficiency of air output and the separation efficiency of ferromagnetic particles are calculated and compared with a standard value, and then the performance of the three-phase vortex separator is judged.
Description
Technical Field
The invention relates to the field of equipment manufacturing, in particular to the field of oil-liquid separation performance testing of an engine lubricating system, and particularly relates to an oil-gas separation performance evaluation test method.
Background
The lubricating system of aeroengine need use the oil-liquid separator, and the oil-liquid separator who adopts is three-phase vortex shunt for separate lubricating oil, air and metal abrasive dust in the lubricated medium of mixing, however aeroengine's oil-liquid separator requires highly, and specific performance requires as follows:
the oil-gas separator can separate and discharge air in return oil to the ventilation pipe, and the air output efficiency is not lower than 98%;
the oil-gas separator can separate the lubricating oil in the return oil and output the lubricating oil to the oil tank, and the efficiency of the separation of the lubricating oil is not lower than 90%;
the separator should ensure that the ferromagnetic particle separation efficiency in the range of 0.05mg (about 500um × 500um × 25 um) to 0.13mg (about 762um × 762um × 25 um) is not less than 70%; the separation efficiency is not less than 85% from 0.13mg (about 762um x 25 um) to 0.8mg (about 1000um x 100 um) of ferromagnetic particles.
The air that oil and gas separator separated can carry partial lubricating oil, just is used for aeroengine's oil blanket, and the lubricating oil of separating is then used for recycling, and aeroengine when operating, because the wearing and tearing can inevitably appear in the motion of driving medium such as gear, consequently metal abrasive dust can inevitably appear in the lubricating oil, and oil and gas separator need separate the metal abrasive dust in the lubricating oil, ensures that the metal particle content of fluid of reuse is few, can not influence aeroengine's operation.
Aiming at the high requirements of the three-phase vortex separator of the aero-engine, the performance of the three-phase vortex separator needs to be tested when the three-phase vortex separator is produced, used or replaced, most of the existing oil-liquid separators are used for oil-liquid separation, and the performance standard used on the aero-engine cannot be met only through simple tests, so that a performance test method of the three-phase vortex separator capable of meeting the separation performance required by the aero-engine needs to be designed.
Disclosure of Invention
The invention aims to provide an oil-gas separation performance evaluation test method, which can test the separation efficiency of a three-phase eddy current separator on metal particles and realize comprehensive separation performance test on the three-phase eddy current separator.
In order to achieve the above purpose, the invention adopts the technical scheme that: an oil-gas separation performance evaluation test method comprises the following steps:
step one, preparing ferromagnetic particles for testing, and measuring the number f of the particles, wherein f is not less than 100 particles;
heating lubricating oil in an oil storage tank by a heater, sending the heated lubricating oil into an oil-gas mixing device through an oil pump and a first liquid flow meter, and sending air into the oil-gas mixing device through an air compressor after passing through an air filter and a first gas flow to realize oil-gas mixing;
thirdly, adding the ferromagnetic particles prepared in the first step into an oil-gas mixing device through a particle feeding device to be mixed with oil gas;
feeding the mixed oil gas added with ferromagnetic particles in the oil-gas mixing device into a three-phase vortex separator for separation, discharging the separated gas after passing through a second gas flowmeter, and feeding the separated lubricating oil into an oil storage tank after passing through a second liquid flowmeter;
after separation is completed, selecting a variation a of a first liquid flow meter within not less than three periods of time and a second liquid flow meter b within a corresponding period of time from the separation process after separation for 1min and before separation for 1min, obtaining the separation efficiency of the lubricating oil through b/a, selecting a variation c of the first gas flow meter within not less than three periods of time and a second gas flow meter d within a corresponding period of time from the separation process after separation for 1min and before separation for 1min, obtaining the air output efficiency through d/c, measuring the number h of ferromagnetic particles separated by the three-phase vortex separator, and obtaining the separation efficiency of the ferromagnetic particles through h/f;
and step six, comparing the lubricating oil separation efficiency, the air output efficiency and the ferromagnetic particle separation efficiency obtained by the test with standard values, and further judging the performance of the three-phase vortex separator.
The device can test the separation efficiency of the three-phase eddy current separator on metal particles, and realizes comprehensive separation performance test on the three-phase eddy current separator.
Preferably, the ferromagnetic particles in step one are 0.05mg to 0.13mg or 0.13mg to 0.8mg.
Preferably, the flow rate of the lubricating oil in the step two is 81-107L/min, and the flow rate of the oil-gas mixture is not more than 3 times of the flow rate of the lubricating oil.
Preferably, the oil-gas mixture is-40 deg.C to 160 deg.C, the limit temperature is 175 deg.C, and the time for the limit temperature to appear per hour is less than 5min.
The ferromagnetic particles, the flow rate of the lubricating oil and the temperature of the oil-gas mixture can more comprehensively simulate the properties of mixed oil-gas in an aircraft engine, so that test data can be close to an actual use scene.
Preferably, when the ferromagnetic particles prepared in the step one are added to the oil-gas mixing device, the ferromagnetic particles and the lubricating oil are mixed firstly and then poured into the oil-gas mixing device.
Ferromagnetic granule pours into the oil-gas mixture device into after mixing with the lubricating oil earlier again, so can reduce the condition that ferromagnetic granule glues on the pipeline, and then guarantee the precision of experimental calculation.
Preferably, a manual valve is arranged between the particulate matter feeding device and the oil-gas mixing device to control opening and closing.
The design of manual valve can avoid mixing oil gas to enter into particulate matter and throw in the device.
Preferably, the oil-gas mixing device is matched with a first pressure transmitter to ensure that the pressure of mixed oil gas entering the three-phase vortex separator from the oil-gas mixing device is 0.4-0.6MPa, the particulate matter throwing device is connected with an air filter through a pipeline and a high-pressure air pump after finishing throwing the particulate matter, and the high-pressure air pump ensures that the introduced air pressure is greater than 1MPa.
After carrying out the granule and puting in, through the mode that lets in highly-compressed air, can ensure that the particulate matter can enter into the oil gas mixture completely, can avoid under the dynamic state oil gas mixture to enter into the particulate matter simultaneously and put in the device, so can realize the particulate matter input that does not shut down.
Preferably, the gas separated in the fourth step is firstly filtered to collect oil liquid in the gas, and then is discharged after passing through the second gas flow meter, and the lubricating oil collected by the filter enters the oil storage tank through a pipeline.
A part of lubricating oil still exists in the separated gas, and the lubricating oil in the gas can be separated and recovered through the design of the filter.
Preferably, the lubricating oil in the fourth step enters the oil liquid collecting device after passing through the second liquid flow meter, and metal particles in the lubricating oil are collected and counted by the metal abrasive particle sensor in the oil liquid collecting device and then sent to the oil storage tank; and the number h = f-e of the ferromagnetic particles separated in the step six.
The metal abrasive particle sensors in the oil liquid collecting device are used for collecting and counting the residual ferromagnetic metal particles in the oil liquid, so that the number of the ferromagnetic particles separated by the three-phase eddy current separator is not required to be stopped, and the calculation efficiency of the particle separation efficiency is improved.
Drawings
FIG. 1 is a schematic diagram of a test method for evaluating oil-gas separation performance.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The oil-gas mixing device, the particulate matter feeding device, the three-phase vortex separator and the like are connected through pipelines, and then the performance test of the following embodiment is carried out.
Example 1
An oil-gas separation performance evaluation test method comprises the following steps:
step one, preparing ferromagnetic particles for testing, wherein the ferromagnetic particles are 0.05mg to 0.13mg, and the number f =200;
heating lubricating oil in an oil storage tank by a heater, sending the heated lubricating oil to an oil-gas mixing device at a speed of 81L/min after passing through an oil pump and a first liquid flow meter, and sending air to the oil-gas mixing device at a speed of 162L/min after passing through an air filter and a first gas flow rate by an air compressor to realize oil-gas mixing;
step three, mixing the ferromagnetic particles prepared in the step one into lubricating oil, and then adding the mixture into an oil-gas mixing device through a particle feeding device to be mixed with oil gas;
step four, feeding the mixed oil gas added with ferromagnetic particles in the oil-gas mixing device into a three-phase vortex separator for separation at the pressure of 0.4MPa, discharging the separated gas through a second gas flowmeter, and feeding the separated lubricating oil into an oil storage tank through a second liquid flowmeter;
fifthly, the separation test lasts for 60min, changes a of the first liquid flow meters in 10-15min, 25-30min and 45-50min are selected to be 405L, 403L and 408L respectively, changes b of the second liquid flow meters in corresponding time intervals are 380L, 375L and 388L respectively, the separation efficiencies of the lubricating oil obtained through b/a are 93.8%, 93.0% and 95% respectively, changes c of the first gas flow meters in 10-15min, 25-30min and 45-50min are selected to be 811L, 815L and 808L respectively, the second gas flow meters d in corresponding time intervals are 798L, 800L and 795L respectively, the air output efficiencies of 98.3%, 98.2% and 98.4% respectively can be obtained through d/c, the number h =152 of ferromagnetic particles separated by the three-phase vortex separator is measured, and the separation efficiency of the ferromagnetic particles can be 76% through h/f;
and step six, comparing the lubricating oil separation efficiency, the air output efficiency and the ferromagnetic particle separation efficiency obtained by the test with standard values, and judging that the three-phase eddy current separator has good performance.
Example 2
An oil-gas separation performance evaluation test method comprises the following steps:
step one, preparing ferromagnetic particles for testing, wherein the number f =260 of the ferromagnetic particles is 0.13mg to 0.8 mg;
heating lubricating oil in an oil storage tank by a heater, sending the heated lubricating oil to an oil-gas mixing device at 107L/min after passing through an oil pump and a first liquid flow meter, and sending air to the oil-gas mixing device at 214L/min after passing through an air filter and a first gas flow by an air compressor to realize oil-gas mixing;
step three, mixing the ferromagnetic particles prepared in the step one into lubricating oil, and then adding the mixture into an oil-gas mixing device through a particle feeding device to be mixed with oil gas;
step four, feeding the mixed oil gas added with ferromagnetic particles in the oil-gas mixing device into a three-phase vortex separator at 0.6MPa for separation, discharging the separated gas after passing through a second gas flowmeter, and feeding the separated lubricating oil into an oil storage tank after passing through a second liquid flowmeter;
step five, the whole separation process lasts for 60min, the temperature of the lubricating oil in the first 20min is-40-60 ℃, the temperature of the lubricating oil in the second 20min is 60-160 ℃, the temperature of the lubricating oil in the first 35min is 175 ℃, the temperature of the lubricating oil in the second 40min is 120-160 ℃, the temperature of the lubricating oil in the first 40min is 15-20min, 25-30min, 35-40min and 50-55min is 535L, 537L, 534L and 536L respectively, the temperature of the first liquid flow meter b in the corresponding time period is 488L, 490L, 482L and 487L respectively, the separation efficiency of the lubricating oil is 91.2%, 90.2% and 90.8% respectively through b/a, the temperature of the second gas flow meter b in the corresponding time period is 15-20min, 25-30min, 35-40min and 50-55min is 488L, 1068L, 1072L and 1068L respectively, the temperature of the second gas flow meter d in the corresponding time period is 1055L, 14L and 98.8 h, the ferromagnetic particles are obtained through metering, the separation efficiency is 98.87 h and the ferromagnetic particles are obtained through b/a metering;
and step six, comparing the lubricating oil separation efficiency, the air output efficiency and the ferromagnetic particle separation efficiency obtained by the test with standard values, and judging that the three-phase eddy current separator has good performance.
Example 3
An oil-gas separation performance evaluation test method comprises the following steps:
step one, preparing four parts of ferromagnetic particles for testing, wherein f =200 of the ferromagnetic particles is 0.05mg to 0.13mg, and f =260 of the ferromagnetic particles is 0.05mg to 0.13 mg; 0.13mg to 0.80mg ferromagnetic particles f =200, 0.13mg to 0.80mg ferromagnetic particles f =260;
heating lubricating oil in an oil storage tank by a heater, sending the heated lubricating oil into an oil-gas mixing device through an oil pump and a first liquid flow meter, and sending air into the oil-gas mixing device through an air compressor after passing through an air filter and a first gas flow to realize oil-gas mixing;
step three, adding the ferromagnetic particles prepared in the step one into an oil-gas mixing device through a particle feeding device to be mixed with oil gas;
feeding the mixed oil gas added with ferromagnetic particles in the oil-gas mixing device into a three-phase vortex separator for separation, collecting oil liquid in the separated gas through a filter, then discharging the collected oil liquid through a second gas flowmeter, feeding the collected oil liquid into an oil storage tank through a pipeline, feeding the separated oil liquid into an oil liquid collecting device through a second liquid flowmeter, collecting metal particles in the oil liquid through a metal abrasive particle sensor in the oil liquid collecting device, counting e, and then feeding the metal particles into the oil storage tank;
step five, the whole process lasts for 120min, the flow rate of the lubricating oil in the step two in the previous 30min is 81L/min, the gas flow rate is 162L/min, the flow rate of the lubricating oil in the step two in the 30-60min is 88L/min, and the gas flow rate is 176L/min; the flow rate of the second lubricating oil in the 60-90min step is 95L/min, the gas flow rate is 190L/min, the flow rate of the second lubricating oil in the 90-120min step is 107L/min, and the gas flow rate is 214L/min; the temperature of the lubricating oil is 175 ℃ at 42-47min and 103-108min, the temperature of the lubricating oil is 175 ℃ at other time intervals, the lubricating oil is at-40-160 ℃ at 10min, 0.05mg to 0.13mg of ferromagnetic particles with f =200 are mixed with the lubricating oil and poured into the lubricating oil from a particulate matter feeding device, then the particulate matter feeding device is connected to a high-pressure air pump to introduce air with the pressure of 1MPa, then a manual valve is opened, a means valve is closed after 20s is continued, the ferromagnetic particles are fed into the mixed oil gas, and 0.05mg to 0.13mg of ferromagnetic particles with f =260, 0.13mg to 0.80mg of ferromagnetic particles with f =200 and 0.13mg to 0.80mg of ferromagnetic particles with f =260 are respectively fed into the mixed oil gas at 40min, 70min and 100min in the same way; selecting changes a of the first liquid flow meter when the flow meter is 10-15min, 20-25min, 42-47min, 52-57min, 70-75min, 80-85min, 103-108min and 112-117min as 405L, 406L, 440L, 442L, 476L, 474L, 535L and 537L respectively; variations b of the second liquid flow meter are, 367L, 368L, 399L, 403L, 430L, 428L, 482L, 488L, respectively; the variations c of the first gas flow meter are 810L, 811L, 880L, 883L, 952L, 950L, 1072L, 1068L, respectively; the variation d of the second gas flow meter is 800L, 802L, 863L, 868L, 935L, 932L, 1052L, 1053L, respectively; collecting and counting the metal particles before 40min, wherein e is 48, h is 152,40-70min, e is 62, and h is 198; e =18, h is 182 within 70-100 min; e is 26 and h is 234 within 100-120 min; the separation rate b/a of the lubricating oil is respectively 90.6%, 90.7%, 91.2%, 90.3%, 90.1% and 90.9% by calculation; calculating the air output efficiency d/a to be 98.6%, 98.9%, 98.1%, 98.3%, 98.4% and 98.1% respectively; 98.1 percent and 98.6 percent, and the separation rate h/f of ferromagnetic particles is 76.0 percent, 76.2 percent, 91 percent and 90.0 percent respectively;
and step six, comparing the lubricating oil separation efficiency, the air output efficiency and the ferromagnetic particle separation efficiency obtained by the test with standard values, and judging that the three-phase eddy current separator has good performance.
Embodiments 1 to 3 of the present application are all performed with respect to the same three-phase vortex separator, where a difference between embodiments 1 and 2 is that flow rates of lubricant and air are different, and embodiment 3 is designed by using a manual valve of a particulate matter feeding device and introducing high-pressure gas, and by matching with a design of a metal abrasive particle sensor in a lubricant collecting device, a continuous test including continuous tests of particulate matters of different flow rates, different temperatures, and different specifications can be performed on the three-phase vortex separator.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present invention. It should be noted that there are no specific structures but rather a few limitations to the preferred embodiments of the present invention, and that many modifications, adaptations, and variations are possible and can be made by one skilled in the art without departing from the principles of the present invention; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments.
Claims (9)
1. An oil-gas separation performance evaluation test method is characterized by comprising the following steps:
step one, preparing ferromagnetic particles for testing, and measuring the number f of the particles, wherein f is not less than 100 particles;
heating lubricating oil in an oil storage tank by a heater, sending the heated lubricating oil into an oil-gas mixing device through an oil pump and a first liquid flow meter, and sending air into the oil-gas mixing device through an air compressor after passing through an air filter and a first gas flow to realize oil-gas mixing;
step three, adding the ferromagnetic particles prepared in the step one into an oil-gas mixing device through a particle feeding device to be mixed with oil gas;
feeding the mixed oil gas added with ferromagnetic particles in the oil-gas mixing device into a three-phase vortex separator for separation, discharging the separated gas after passing through a second gas flowmeter, and feeding the separated lubricating oil into an oil storage tank after passing through a second liquid flowmeter;
after separation is completed, selecting a variation a of a first liquid flow meter within not less than three periods of time and a second liquid flow meter b within a corresponding period of time from the separation process after separation for 1min and before separation for 1min, obtaining the separation efficiency of the lubricating oil through b/a, selecting a variation c of the first gas flow meter within not less than three periods of time and a second gas flow meter d within a corresponding period of time from the separation process after separation for 1min and before separation for 1min, obtaining the air output efficiency through d/c, measuring the number h of ferromagnetic particles separated by the three-phase vortex separator, and obtaining the separation efficiency of the ferromagnetic particles through h/f;
and step six, comparing the lubricating oil separation efficiency, the air output efficiency and the ferromagnetic particle separation efficiency obtained by the test with a standard value, and further judging the performance of the three-phase eddy current separator.
2. The oil-gas separation performance evaluation test method of claim 1, wherein the ferromagnetic particles in the first step are 0.05mg to 0.13mg or 0.13mg to 0.8mg.
3. The oil-gas separation performance evaluation test method according to claim 1, wherein the flow rate of the lubricating oil in the second step is 81-107L/min, and the flow rate of the oil-gas mixture is not more than 3 times of the flow rate of the lubricating oil.
4. The method of claim 3, wherein the temperature of the mixture is-40 ℃ to 160 ℃, the limit temperature is 175 ℃, and the time for the limit temperature to appear per hour is less than 5min.
5. The method for testing the oil-gas separation performance evaluation according to claim 3, wherein the ferromagnetic particles prepared in the first step are mixed with lubricant oil before being poured into the oil-gas mixing device when being added into the oil-gas mixing device.
6. The oil-gas separation performance evaluation test method according to claim 5, wherein a manual valve is arranged between the particulate matter feeding device and the oil-gas mixing device to control opening and closing.
7. The oil-gas separation performance evaluation test method according to claim 5, wherein the oil-gas mixing device is matched with the first pressure transmitter to ensure that the pressure of mixed oil gas entering the three-phase vortex separator is 0.4-0.6MPa, the particulate matter feeding device is connected with the air filter through a pipeline and a high-pressure air pump after the particulate matter feeding is completed, and the introduced air pressure is ensured to be more than 1MPa through the high-pressure air pump.
8. The oil-gas separation performance evaluation test method of claim 1, wherein the gas separated in the fourth step is discharged after passing through a second gas flowmeter after passing through a filter to collect oil in the gas, and the lubricating oil collected by the filter enters an oil storage tank through a pipeline.
9. The oil-gas separation performance evaluation test method according to claim 7, wherein the lubricating oil in the fourth step enters the oil collecting device after passing through the second liquid flow meter, and metal particles in the oil are collected and counted e by a metal abrasive particle sensor in the oil collecting device and then sent to the oil storage tank; and the number h = f-e of the ferromagnetic particles separated in the step six.
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