CN117145793A - Device and method for detecting effective rate of fan - Google Patents
Device and method for detecting effective rate of fan Download PDFInfo
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- CN117145793A CN117145793A CN202310941433.6A CN202310941433A CN117145793A CN 117145793 A CN117145793 A CN 117145793A CN 202310941433 A CN202310941433 A CN 202310941433A CN 117145793 A CN117145793 A CN 117145793A
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000001514 detection method Methods 0.000 claims abstract description 56
- 238000001816 cooling Methods 0.000 claims abstract description 28
- 238000012544 monitoring process Methods 0.000 claims abstract description 28
- 238000007789 sealing Methods 0.000 claims abstract description 24
- 238000012360 testing method Methods 0.000 claims abstract description 18
- 230000001050 lubricating effect Effects 0.000 claims abstract description 16
- 239000010687 lubricating oil Substances 0.000 claims description 139
- 239000010720 hydraulic oil Substances 0.000 claims description 97
- 239000003921 oil Substances 0.000 claims description 63
- 238000010438 heat treatment Methods 0.000 claims description 24
- 238000005461 lubrication Methods 0.000 claims description 17
- 230000001105 regulatory effect Effects 0.000 claims description 15
- 230000001276 controlling effect Effects 0.000 claims description 10
- 238000005070 sampling Methods 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims description 3
- 238000011056 performance test Methods 0.000 claims description 3
- 239000002826 coolant Substances 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 6
- 238000009826 distribution Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention provides a device and a method for detecting the effective rate of a fan, wherein the device consists of a lubricating system, a driving system, a sealing system, a cooling system, a detecting system, a monitoring system and an operation control system, fully considers and simulates the actual working scene of the fan, can detect the actual distribution condition of the performance parameters of the fan after maintenance, can output the effective rate of the fan, and provides an effective basis for the maintenance work of the fan. The high-speed gear box in the driving system is connected with the variable frequency motor through the coupler so as to ensure that the fan has stable rotating speed up to 32000r/min during testing, and the application range is wide. When the fan automatic detection is carried out, all systems are intelligently controlled to sequentially and orderly work through the PLC program, so that the problem of deviation of manual operation is avoided, the working efficiency is improved, the accuracy of fan detection is improved, and the reliability of the engine after maintenance is improved.
Description
Technical Field
The invention belongs to the technical field of aeroengine maintenance, and particularly relates to a device and a method for detecting the effective rate of a fan.
Background
Some type of engine fan is an important component of the engine air cooling system and functions to deliver air to the oil radiator for cooling the working oil within the engine. The advantage and the disadvantage of the efficiency of air delivery in the operation of the fan directly affect the operation reliability of the air cooling system of the aero-engine, and have great influence on the safe use of the engine.
The effective rate of the fan refers to the ratio of the air quantity blown out by the fan to a theoretical value at a fixed temperature, air pressure and fan rotation speed.
According to the overall performance index requirement of the fan after repair, which is set forth in the maintenance manual, the cooling fan is required to be subjected to effective detection through a detection device after production, and is rated as a qualified product after the effective rate reaches the production standard; similarly, the cooling fan also needs to be subjected to effective rate detection after repair to evaluate the repair effect, and the cooling fan is rated as a qualified product after the effective rate reaches the repair standard. However, the effective rate of the maintained fan is always lower than the production standard, and the existing detection device cannot simulate the actual working scene of the maintained fan on the aeroengine, namely the actual distribution condition of the fan performance parameters cannot be detected in real time, so that the original detection device and method cannot be used. At present, a unified assessment mode for performance indexes of cooling fans on an aeroengine is lacking in China, and a special detection device and method for the cooling fans after maintenance are also lacking, so that the safety and reliability of the engine operation are affected.
In view of the above problems, there is an urgent need to develop a device and a method for detecting performance of a cooling fan of an aircraft engine lubricating oil system.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the existing cooling fan has no special detection device for evaluating the performance index after repair and a unified performance index evaluation mode.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
the utility model provides a fan effective rate detection device which characterized in that:
the device comprises a lubrication system, a driving system, a sealing system, a cooling system, a detection system, a monitoring system and an operation control system;
the lubrication system is used for providing lubricating oil for a support bearing of an internal rotating shaft of the fan to be tested and recovering the lubricating oil flowing through the support bearing;
the driving system comprises a high-speed gear box, a variable frequency motor and a hydraulic oil component;
a fan adapter seat is arranged on the high-speed gear box and used for installing a fan to be tested; the variable frequency motor is connected with the input end of the high-speed gear box through a coupler, and drives the gear to rotate so as to drive the fan to be tested to rotate; the hydraulic oil component provides hydraulic oil for gears of the high-speed gear box and recovers the hydraulic oil flowing through the high-speed gear box;
the sealing system comprises a gas supply pipeline;
the air supply pipeline is in butt joint with the inner rotating shaft supporting bearing of the fan to be tested, and when the performance test of the fan is carried out, external compressed air is in airtight seal with two end faces of the inner rotating shaft supporting bearing of the fan to be tested through the air supply pipeline;
the cooling system comprises two sets of hydraulic pipelines and two radiators;
the two sets of hydraulic pipelines are respectively connected with two radiators arranged on a hydraulic oil path of the driving system and a lubricating oil path of the lubricating system; when the hydraulic oil way or the lubricating oil way has an overtemperature condition, the cooling medium cools the oil in the hydraulic oil way or the lubricating oil way through a cooling system;
the detection system comprises a flow measuring pipe, a fan connecting device, an adjusting component and a measuring component, and is used for measuring various parameters of the fan to be detected in operation;
the flow measuring pipe is horizontally arranged and is coaxially connected with the rotating shaft inside the fan to be tested through the fan connecting device;
the adjusting component is arranged in the flow measuring pipe and is used for adjusting the air flow blown out by the fan to be tested so as to meet the detection requirement of the effective rate of the fan;
the measuring component is arranged on the flow measuring pipe and is used for measuring the pressure, temperature and gas flow data of the air flow blown out by the fan to be measured in real time and transmitting the data to the operation control system in real time;
the monitoring system is arranged in the lubrication system, the detection system, the sealing system, the driving system and the fan to be tested and is used for monitoring various data of the fan effective rate detection device in operation;
the operation control system is used for controlling the start and stop of the driving system, the lubricating system, the cooling system, the sealing system and the detection system in real time, receiving and controlling the states of the systems according to data, and outputting the effective rate of the fan to be detected according to the data transmitted by the detection system.
Further, the monitoring system comprises:
the first speed measuring assembly, the first temperature measuring assembly, the second temperature measuring assembly, the first pressure measuring assembly and the timing assembly are arranged on the lubrication system;
the second speed measuring component and the third temperature measuring component are arranged on the driving system;
the second pressure measuring assembly is arranged on the sealing system;
the fourth pressure measuring component and the fifth temperature measuring component are arranged at the air inlet of the fan to be measured;
the first temperature measuring component and the first pressure measuring component are arranged in the lubricating system and are used for monitoring the temperature and the pressure of lubricating oil in real time and transmitting data to the operation control system in real time;
the second temperature measuring assembly, the first speed measuring assembly and the timing assembly are arranged on a supporting bearing in the fan to be measured and are used for monitoring the temperature, the speed and the running time of the supporting bearing in real time and transmitting data to the operation control system in real time;
the second speed measuring assembly and the third temperature measuring assembly are arranged on the high-speed gear box and are used for monitoring the speed and the temperature of the gear of the high-speed gear box in real time and transmitting data to the operation control system in real time;
the second pressure measuring assembly is arranged on the air supply pipeline and is used for monitoring pressure data of compressed air in the air supply pipeline in real time and transmitting the data to the operation control system in real time;
the fourth pressure measuring component and the fifth temperature measuring component are arranged outside the fan to be measured and are used for measuring external atmospheric pressure and ambient temperature data in real time and transmitting the data to the operation control system in real time.
Further, the measuring assembly comprises a third pressure measuring assembly, a fourth temperature measuring assembly and a gas flowmeter;
the third pressure measuring component, the fourth temperature measuring component and the gas flowmeter are arranged on the flow measuring pipe and are used for measuring pressure, temperature and gas flow data of air flow blown out by the fan to be measured in real time and transmitting the data to the operation control system in real time.
Further, the lubricating system comprises a lubricating oil tank, a lubricating oil pump, a lubricating oil supply pipeline, a lubricating oil overflow pipeline, a lubricating oil heating pipeline, a lubricating oil return pipeline and a lubricating oil sampling pipeline;
the oil tank is internally provided with a heater, a first oil suction filter is arranged at an outlet, a first air filter is arranged at the top of the oil tank, and a first liquid level meter is arranged at the outer side of the oil tank;
the lubricating oil supply pipeline is sequentially provided with a valve, a lubricating oil pump, an oil filter and an electromagnetic valve along the lubricating oil flowing direction; the lubricating oil tank is driven by the lubricating oil pump to provide lubricating oil for a supporting bearing of an internal rotating shaft of the fan to be tested through a lubricating oil supply pipeline;
the inlet of the lubricating oil overflow pipeline is connected with a lubricating oil supply pipeline, the outlet of the lubricating oil overflow pipeline is connected with a first oil return port of a lubricating oil tank, and an overflow valve is arranged on the lubricating oil overflow pipeline;
the inlet of the lubricating oil heating pipeline is connected with the lubricating oil supply pipeline, the outlet of the lubricating oil heating pipeline is connected with the second oil return port of the lubricating oil tank, and a valve for controlling the heating of lubricating oil is arranged on the lubricating oil heating pipeline;
an inlet of the lubricating oil return pipeline is connected with a support bearing of an internal rotating shaft of the fan to be tested, and an outlet of the lubricating oil return pipeline is connected with an oil return port III of the lubricating oil tank;
the lubricating oil sampling pipeline is connected with the lubricating oil supply pipeline and is used for sampling lubricating oil in the lubricating oil supply pipeline before testing.
Further, the hydraulic oil component comprises a hydraulic oil tank, a hydraulic oil pump, a hydraulic oil supply pipeline, a hydraulic oil return pipeline and a hydraulic oil overflow pipeline;
the outlet of the hydraulic oil tank is provided with a second oil suction filter, and the outer side of the hydraulic oil tank body is provided with a second liquid level meter;
the hydraulic oil tank is driven by the hydraulic oil pump to convey hydraulic oil into the high-speed gear box through a hydraulic oil supply pipeline;
the inlet of the hydraulic oil return pipeline is connected with the high-speed gear box, the outlet of the hydraulic oil return pipeline is connected with the first oil return port of the hydraulic oil tank, and a valve for adjusting the return oil pressure is arranged on the hydraulic oil return pipeline so as to meet the requirement of the oil supply pressure;
the inlet of the hydraulic oil overflow pipeline is connected with a hydraulic oil supply pipeline, the outlet of the hydraulic oil overflow pipeline is connected with a second oil return port of the hydraulic oil tank, and an overflow valve is arranged on the hydraulic oil overflow pipeline.
Further, a valve, a second air filter, a pressure regulating valve and an electromagnetic valve are sequentially arranged on the air supply pipeline along the flow direction of the compressed air;
the second air filter is arranged at the front section of the air supply pipeline and is used for filtering impurities in the compressed air, so that the cleaning of the conveying gas is ensured;
the pressure regulating valve is used for regulating the pressure of compressed air in the air supply pipeline.
Further, the regulating assembly comprises a rectifying assembly and a back pressure assembly;
the rectifying component is arranged at the air inlet of the flow measuring pipe and used for rectifying air flow blown by the fan;
the back pressure component is arranged at the tail end of the flow measuring tube and used for keeping the pressure in the flow measuring tube to meet the test requirement.
Further, a lifting component is arranged below the flow measuring pipe and used for adjusting the height of the flow measuring pipe to enable the height of the flow measuring pipe to be coaxial with the rotating shaft inside the fan to be measured.
The method for detecting the fan effective rate by using the fan effective rate detection device is characterized by comprising the following steps of:
step 1: mounting a fan to be tested on the fan effective rate detection device according to any one of claims 1 to 6, and enabling the internal rotating shaft of the fan to be tested to be coaxial with a flow measuring pipe in a detection system;
step 2: starting an operation control system, enabling the system to enter an automatic operation mode, and starting to work according to the following substeps in sequence:
step 2.1: starting a lubricating oil heating pipeline in the lubricating system to heat lubricating oil to a rated temperature;
step 2.2: opening an air supply pipeline in the sealing system, and performing air sealing on external compressed air to two end faces of a rotating shaft supporting bearing in the fan to be tested through the air supply pipeline;
step 2.3: starting a hydraulic oil supply pipeline in the driving system to supply hydraulic oil into the high-speed gear box; simultaneously starting an oil supply pipeline in the lubrication system to supply oil to a support bearing of an inner rotating shaft of the fan to be tested;
step 2.4: starting a high-speed gear box to drive a fan to rotate until the rotating speed of the fan reaches the test requirement;
step 3: when the oil supply pressure, the gas pressure and the rotating speed of the fan of the hydraulic oil and the lubricating oil all meet the test requirements, the operation control system controls the timing assembly to start timing, data detected by the detection system are transmitted to the operation control system, the operation control system calculates the data according to the calculation logic of the effective rate of the fan, and the effective rate of the fan is output.
Further, the step 1 specifically comprises the following steps:
step 1.1: assembling a fan effective rate detection device;
step 1.2: mounting a fan to be tested on a fan adapter of a high-speed gear box in a driving system;
step 1.3: the fan connecting device in the detection system is connected with the air outlet of the fan to be detected, so that the flow measuring pipe and the rotating shaft inside the fan to be detected are coaxial.
The beneficial effects of the invention are as follows:
1. the invention discloses a fan effective rate detection device and a method according to the total index requirements of the performance recovery of the fan after repair, which are mentioned in a service manual.
2. When the automatic detection of the fan is carried out, all the systems are intelligently controlled to sequentially and orderly work through the PLC program, so that the problem of deviation of manual operation is avoided, the working efficiency is improved, and the accuracy of fan detection is improved.
3. The lubricating system and the driving system of the invention design a loop for recovering oil, recycle the oil, and reduce the cost of testing the efficiency of the fan.
4. According to the lubricating system, the lubricating oil is heated in the heating pipeline in a circulating heating mode, so that the lubricating oil is heated more uniformly, the heating time is shortened, and the heating efficiency is improved.
5. The device and the method designed by the invention can be used for measuring the effective rate of other types of fans besides cooling fans on an aeroengine.
Drawings
FIG. 1 is a schematic diagram of a device model according to the present invention.
FIG. 2 is a schematic view of a flow tube and a liftable V-shaped block according to the present invention.
FIG. 3 is a schematic diagram of a hydraulic and pneumatic system of the present invention.
Reference numerals:
101-an oil tank; 102-a heater; 103-first oil absorption filtration; 104-ball valve; 105-first air filtration; 106-a first temperature sensor; 107-a first level gauge; 108-ball valve; 109-a gear pump set; 110-an overflow valve; 111-a pressure gauge; 112-a pressure transmitter; 113-oil filtering; 114-an electromagnetic valve; 115-valve; 116-a pressure transmitter; 117-solenoid valve; 118-a pressure gauge; 119-a first rotation speed table; 120-a first timer; 121-a second temperature sensor;
201-a hydraulic oil tank; 202-second oil absorption filtering; 203-a second level gauge; 204-ball valve; 205-gear pump set; 206-oil filtering; 207-overflow valve; 208-a pressure regulating valve; 209-a second tachometer; 210-a third temperature sensor; 211-ball valve;
301-an electromagnetic valve; 302-a pressure transmitter; 303-a pressure gauge; 304-a pressure regulating valve; 305-second air filtration; 306-a pressure gauge; 307-valve;
401-a first heat sink; 402-an internal thread ball valve; 403-valve; 404-valve; 405-one-way valve; 406-a first heat sink;
501-a fourth temperature sensor; 502-a wind pressure transmitter; 503-a gas flow meter; 504-a back pressure valve; 505-a fifth temperature sensor; 506-pressure transmitter.
Detailed Description
As shown in FIG. 1, the fan effective rate detection device comprises a lubrication system, a driving system, a sealing system, a cooling system, a detection system, a monitoring system and an operation control system;
the monitoring system is respectively arranged on the lubrication system, the detection system, the sealing system, the driving system and the fan to be tested. The system is arranged on the working platform.
Components 101-121 in FIG. 3 form a lubrication system of the device, and are used for providing lubricating oil for a support bearing of an internal rotating shaft of a fan to be tested and recovering the lubricating oil flowing through the support bearing;
the lubrication system comprises a lubricating oil tank 101, a gear pump group 109, a lubricating oil supply pipeline, a lubricating oil overflow pipeline, a lubricating oil heating pipeline, a lubricating oil return pipeline and a lubricating oil sampling pipeline, and a first tachometer 119, a first temperature sensor 106, a second temperature sensor 121, a first pressure measuring component and a first timer 120 which are arranged on the lubrication system by the monitoring system;
aviation lubricating oil is stored in a lubricating oil tank 101, and a heater 102 is arranged in the lubricating oil tank 101 and used for heating the lubricating oil; the outlet of the lubricating oil tank 101 is provided with a first oil suction filter 103 for avoiding impurities from entering an oil path; the ball valve 104 is used for controlling the discharge of lubricating oil; the top of the lubricating oil tank is provided with a first air filter 105 for balancing the air pressure inside and outside the tank, and the outer side of the lubricating oil tank is provided with a first liquid level meter 107;
the oil supply pipeline is sequentially provided with a ball valve 108, a gear pump set 109, an oil filter 113 and an electromagnetic valve 117 along the oil flow direction; the lubricating oil tank 101 supplies lubricating oil to a support bearing of an internal rotating shaft of the fan to be tested through a lubricating oil supply pipeline under the driving of the gear pump set 109;
an inlet of the lubricating oil overflow pipeline is connected with a lubricating oil supply pipeline, an outlet of the lubricating oil overflow pipeline is connected with a first oil return port of a lubricating oil tank, and an overflow valve 110 is arranged on the lubricating oil overflow pipeline;
an inlet of the lubricating oil heating pipeline is connected with a lubricating oil supply pipeline, an outlet of the lubricating oil heating pipeline is connected with a second oil return port of the lubricating oil tank, and a valve 114 for controlling the heating of lubricating oil is arranged on the lubricating oil heating pipeline;
the inlet of the lubricating oil return pipeline is connected with a support bearing of the rotating shaft in the fan to be tested, and the outlet of the lubricating oil return pipeline is connected with a third oil return port of the lubricating oil tank and is used for recovering lubricating oil on the support bearing;
the lubricating oil sampling pipeline is connected with the lubricating oil supply pipeline and is used for sampling lubricating oil in the lubricating oil supply pipeline before testing, and a valve 115 is arranged on the lubricating oil sampling pipeline;
the first pressure measuring assembly comprises a pressure gauge 111, a pressure transmitter 112, a pressure transmitter 116 and a pressure gauge 118; the first temperature sensor 106 and the first pressure measuring component are arranged in the lubrication system and are used for monitoring the temperature and the pressure of the lubricating oil in real time and transmitting data to the operation control system in real time;
the second temperature sensor 121, the first rotation speed table 119 and the first timer 120 are all arranged on the support bearing inside the fan to be tested, and are used for monitoring the temperature, the speed and the running time of the support bearing in real time and transmitting data to the operation control system in real time.
The components 201-211 in fig. 3 and the high-speed gearbox form a driving system of the device, and the driving system comprises the high-speed gearbox, a variable frequency motor, a hydraulic oil tank 201, a gear pump set 205, a hydraulic oil supply pipeline, a hydraulic oil return pipeline and a hydraulic oil overflow pipeline, a second tachometer 209 and a third temperature sensor 210, wherein the monitoring system is arranged on the driving system;
the hydraulic oil tank 201 is installed in a closed box body at the lower part of the working platform and is used for storing hydraulic oil for lubricating and cooling the high-speed gear box, the hydraulic oil supplies oil to the high-speed gear box through the gear pump set 205, and the return oil pressure of the hydraulic oil is regulated through a valve on a return oil path beside the high-speed gear box;
the high-speed gear box is arranged on the upper part of the working platform, and a fan adapter seat is arranged on the high-speed gear box and used for installing a fan to be tested;
the variable frequency motor is provided with a coupler, and is connected with the input end of the high-speed gear box through the coupler, so that the gear is driven to rotate, and the fan to be tested is driven to rotate, and the fan is ensured to have a stable rotating speed up to 32000r/min during testing;
a second oil suction filter 202 is arranged at the outlet of the hydraulic oil tank 201, and a second liquid level meter 203 is arranged at the outer side of the hydraulic oil tank body;
the hydraulic oil supply pipeline is sequentially provided with a ball valve 204, a gear pump set 205, an oil filter 206 and a pressure regulating valve 208 along the flow direction of hydraulic oil; the hydraulic oil tank 201 is driven by the gear pump set 205 to convey hydraulic oil into the high-speed gear box through a hydraulic oil supply pipeline;
an inlet of the hydraulic oil return pipeline is connected with the high-speed gear box, an outlet of the hydraulic oil return pipeline is connected with a first oil return port of the hydraulic oil tank, and a ball valve 211 for adjusting the return oil pressure is arranged on the hydraulic oil return pipeline so as to meet the requirement of the oil supply pressure;
the inlet of the hydraulic oil overflow pipeline is connected with a hydraulic oil supply pipeline, the outlet of the hydraulic oil overflow pipeline is connected with a second oil return port of the hydraulic oil tank, and an overflow valve 207 is arranged on the hydraulic oil overflow pipeline;
a second tachometer 209 and a third temperature sensor 210 are provided on the high speed gearbox for real time monitoring of the speed and temperature of the high speed gearbox gear and transmitting data to the operational control system in real time.
The components 301-307 in fig. 3 form a sealing system of the device, and the sealing system comprises an air supply pipeline, a valve 307, a second air filter 305, a pressure regulating valve 304 and an electromagnetic valve 301 which are sequentially arranged along the flowing direction of compressed air, and a second pressure measuring assembly of the monitoring system, wherein the second pressure measuring assembly is arranged on the sealing system;
the valve 307 is arranged at the front end of the gas supply pipeline and is used for keeping the gas pressure in the gas supply pipeline to meet the test requirement;
the second air filter 305 is arranged at the front section of the air supply pipeline and is used for filtering impurities in the compressed air, so that the cleaning of the conveying gas is ensured;
the pressure regulating valve 304 is used for regulating the pressure of compressed air in the air supply pipeline;
the second pressure measuring assembly comprises a pressure gauge 303 and a pressure gauge 306, and is arranged on the air supply pipeline and used for monitoring pressure data of compressed air in the air supply pipeline in real time and transmitting the data to the operation control system in real time;
the air supply pipeline is in butt joint with the inner rotating shaft supporting bearing of the fan to be tested, and when the performance of the fan is tested, external compressed air is in airtight seal with two end faces of the inner rotating shaft supporting bearing of the fan to be tested through the air supply pipeline.
Components 401-406 in FIG. 3 form a cooling system of the device, and the cooling system comprises two sets of hydraulic pipelines and two radiators;
when the temperature in the lubricating oil tank 101 exceeds the set temperature, the operation control system controls the internal thread ball valve 402 and the valve 403 of the cooling system to be opened, and the lubricating oil is cooled through the radiator 401 arranged on the lubricating oil path;
when the temperature in the hydraulic oil tank 201 exceeds the set temperature, the operation control system controls the valve 404 and the check valve 405 of the cooling system to open and cools the hydraulic oil through the radiator 406 installed on the hydraulic oil circuit.
The components 501-506 in fig. 3 form a detection system of the device, which comprises a flow measuring pipe, a fan connecting device, an adjusting component, a wind pressure transmitter 502, a fourth temperature sensor 501 and a gas flowmeter 503, wherein the fourth temperature sensor 501 and the gas flowmeter 503 are used for measuring various parameters of a fan to be tested in operation, and the pressure transmitter 506 and the fifth temperature sensor 505 are arranged at the wind inlet of the fan to be tested in the monitoring system;
the flow measuring pipe (see figure 2) is horizontally arranged and is coaxially connected with the rotating shaft inside the fan to be tested through the fan connecting device; the lower part of the flow measuring pipe is also provided with a V-shaped block of the lifting assembly, which is used for adjusting the height of the flow measuring pipe to be coaxial with the rotating shaft inside the fan to be measured;
the adjusting component comprises a rectifying component and a back pressure valve 504, wherein the rectifying component is arranged in the flow measuring pipe and positioned at the air inlet end of the flow measuring pipe and is used for rectifying the air flow blown by the fan; the back pressure valve 504 is arranged at the tail end of the flow tube and is used for keeping the pressure in the flow tube to meet the test requirement;
the wind pressure transmitter 502, the fourth temperature sensor 501 and the gas flowmeter 503 are arranged on the flow measuring pipe and are used for measuring the pressure, the temperature and the gas flow data of the air flow blown by the fan to be measured in real time and transmitting the data to the operation control system in real time;
the pressure transmitter 506 and the fifth temperature sensor 505 are disposed outside the fan to be measured, and are used for measuring external atmospheric pressure and ambient temperature data in real time and transmitting the data to the operation control system in real time.
The operation control system consists of a PLC program control module, a computer, an operation touch screen, a power supply module, a frequency converter, a digital display instrument, a frequency modulator, an indicator lamp, a button switch, a circuit breaker, a contactor, an intermediate relay and an operation console, and is used for controlling the start and stop of a driving system, a lubricating system, a cooling system, a sealing system, a detection system and a monitoring system in real time, receiving and controlling the states of all the systems according to data, and outputting the effective rate of the fan to be tested according to the data transmitted by the detection system;
the PLC program control module automatically controls other systems in the fan performance test process according to the set logic, and monitors the data of the fan performance detection process to be tested in real time.
And the computer calculates the data acquired by the sensor according to the set logic and automatically records the calculation result.
The output rotating speed of the high-speed gear box is controlled by a frequency converter on the operation console to realize the speed regulation of the fan to be tested.
The method for detecting the fan efficiency by using the invention comprises the following steps:
step 1: referring to fig. 2, the mounting inspection apparatus and the fan to be inspected:
step 1.1: assembling a fan effective rate detection device; checking the level gauge 107 and the level gauge 203 respectively, ensuring that the hydraulic oil and lubricating oil levels are not lower than the levels required by fan test;
step 1.2: mounting a fan to be tested on a fan adapter of a high-speed gear box in a driving system;
step 1.3: the fan connecting device in the detection system is connected with the air outlet of the fan to be detected, and the lifting V-shaped block on the sealing system is adjusted to ensure that the flow measuring pipe is coaxial with the rotating shaft inside the fan to be detected and is fixed through a nut;
step 2: starting an operation control system, enabling the system to enter an automatic operation mode, and starting to work according to the following substeps in sequence:
step 2.1: starting a heater 102, and starting a lubricating oil heating pipeline valve 114 in the lubricating system, so that lubricating oil in a lubricating oil tank is circularly heated in the lubricating oil heating pipeline to heat the lubricating oil to a rated temperature;
step 2.2: opening a backpressure valve 307 and an electromagnetic valve 301 of an air supply pipeline in the sealing system, and hermetically sealing the two end surfaces of a rotating shaft supporting bearing in the fan to be tested by external compressed air through the air supply pipeline;
step 2.3: opening a ball valve 204 of a hydraulic oil supply pipeline in the driving system to supply hydraulic oil into the high-speed gear box; simultaneously opening a solenoid valve 117 of an oil supply pipeline in the lubrication system to supply oil to a support bearing of an inner rotating shaft of the fan to be tested;
step 2.4: starting a high-speed gear box to drive a fan to rotate until the rotating speed of the fan reaches the test requirement;
step 3: when the oil supply pressure, the gas pressure and the rotating speed of the fan of the hydraulic oil and the lubricating oil all meet the test requirements, the operation control system controls the timing assembly to start timing, data detected by the detection system are transmitted to the operation control system, the operation control system calculates the data according to the calculation logic of the effective rate of the fan, and the effective rate of the fan is output.
In addition, when the temperature of the hydraulic oil in the hydraulic oil tank or the lubricating oil in the lubricating oil tank is higher than a set value, the operation control system controls to suspend the test, and the operation control system controls to start a radiator on a hydraulic pipeline to cool the hydraulic oil or controls to start the radiator on the lubricating oil pipeline to cool the lubricating oil; when the temperature is reduced to the set value, the cooling system stops working.
Claims (10)
1. A fan effective rate detection device is characterized in that:
the device comprises a lubrication system, a driving system, a sealing system, a cooling system, a detection system, a monitoring system and an operation control system;
the lubrication system is used for providing lubricating oil for a support bearing of an internal rotating shaft of the fan to be tested and recovering the lubricating oil flowing through the support bearing;
the driving system comprises a high-speed gear box, a variable frequency motor and a hydraulic oil component;
a fan adapter seat is arranged on the high-speed gear box and used for installing a fan to be tested; the variable frequency motor is connected with the input end of the high-speed gear box through a coupler, and drives the gear to rotate so as to drive the fan to be tested to rotate; the hydraulic oil component provides hydraulic oil for gears of the high-speed gear box and recovers the hydraulic oil flowing through the high-speed gear box;
the sealing system comprises a gas supply pipeline;
the air supply pipeline is in butt joint with the inner rotating shaft supporting bearing of the fan to be tested, and when the performance test of the fan is carried out, external compressed air is in airtight seal with two end faces of the inner rotating shaft supporting bearing of the fan to be tested through the air supply pipeline;
the cooling system comprises two sets of hydraulic pipelines and two radiators;
the two sets of hydraulic pipelines are respectively connected with two radiators arranged on a hydraulic oil path of the driving system and a lubricating oil path of the lubricating system; when the hydraulic oil way or the lubricating oil way has an overtemperature condition, the cooling medium cools the oil in the hydraulic oil way or the lubricating oil way through a cooling system;
the detection system comprises a flow measuring pipe, a fan connecting device, an adjusting component and a measuring component, and is used for measuring various parameters of the fan to be detected in operation;
the flow measuring pipe is horizontally arranged and is coaxially connected with the rotating shaft inside the fan to be tested through the fan connecting device;
the adjusting component is arranged in the flow measuring pipe and is used for adjusting the air flow blown out by the fan to be tested so as to meet the detection requirement of the effective rate of the fan;
the measuring component is arranged on the flow measuring pipe and is used for measuring the pressure, temperature and gas flow data of the air flow blown out by the fan to be measured in real time and transmitting the data to the operation control system in real time;
the monitoring system is arranged in the lubrication system, the detection system, the sealing system, the driving system and the fan to be tested and is used for monitoring various data of the fan effective rate detection device in operation;
the operation control system is used for controlling the start and stop of the driving system, the lubricating system, the cooling system, the sealing system and the detection system in real time, receiving and controlling the states of the systems according to data, and outputting the effective rate of the fan to be detected according to the data transmitted by the detection system.
2. The fan efficiency detection apparatus as set forth in claim 1, wherein:
the monitoring system includes:
the first speed measuring assembly, the first temperature measuring assembly, the second temperature measuring assembly, the first pressure measuring assembly and the timing assembly are arranged on the lubrication system;
the second speed measuring component and the third temperature measuring component are arranged on the driving system;
the second pressure measuring assembly is arranged on the sealing system;
the fourth pressure measuring component and the fifth temperature measuring component are arranged at the air inlet of the fan to be measured;
the first temperature measuring component and the first pressure measuring component are arranged in the lubricating system and are used for monitoring the temperature and the pressure of lubricating oil in real time and transmitting data to the operation control system in real time;
the second temperature measuring assembly, the first speed measuring assembly and the timing assembly are arranged on a supporting bearing in the fan to be measured and are used for monitoring the temperature, the speed and the running time of the supporting bearing in real time and transmitting data to the operation control system in real time;
the second speed measuring assembly and the third temperature measuring assembly are arranged on the high-speed gear box and are used for monitoring the speed and the temperature of the gear of the high-speed gear box in real time and transmitting data to the operation control system in real time;
the second pressure measuring assembly is arranged on the air supply pipeline and is used for monitoring pressure data of compressed air in the air supply pipeline in real time and transmitting the data to the operation control system in real time;
the fourth pressure measuring component and the fifth temperature measuring component are arranged outside the fan to be measured and are used for measuring external atmospheric pressure and ambient temperature data in real time and transmitting the data to the operation control system in real time.
3. The fan efficiency detection apparatus as set forth in claim 1, wherein:
the measuring assembly comprises a third pressure measuring assembly, a fourth temperature measuring assembly and a gas flowmeter;
the third pressure measuring component, the fourth temperature measuring component and the gas flowmeter are arranged on the flow measuring pipe and are used for measuring pressure, temperature and gas flow data of air flow blown out by the fan to be measured in real time and transmitting the data to the operation control system in real time.
4. The fan efficiency detection apparatus as set forth in claim 1, wherein:
the lubricating system comprises a lubricating oil tank, a lubricating oil pump, a lubricating oil supply pipeline, a lubricating oil overflow pipeline, a lubricating oil heating pipeline, a lubricating oil return pipeline and a lubricating oil sampling pipeline;
the oil tank is internally provided with a heater, a first oil suction filter is arranged at an outlet, a first air filter is arranged at the top of the oil tank, and a first liquid level meter is arranged at the outer side of the oil tank;
the lubricating oil supply pipeline is sequentially provided with a valve, a lubricating oil pump, an oil filter and an electromagnetic valve along the lubricating oil flowing direction; the lubricating oil tank is driven by the lubricating oil pump to provide lubricating oil for a supporting bearing of an internal rotating shaft of the fan to be tested through a lubricating oil supply pipeline;
the inlet of the lubricating oil overflow pipeline is connected with a lubricating oil supply pipeline, the outlet of the lubricating oil overflow pipeline is connected with a first oil return port of a lubricating oil tank, and an overflow valve is arranged on the lubricating oil overflow pipeline;
the inlet of the lubricating oil heating pipeline is connected with the lubricating oil supply pipeline, the outlet of the lubricating oil heating pipeline is connected with the second oil return port of the lubricating oil tank, and a valve for controlling the heating of lubricating oil is arranged on the lubricating oil heating pipeline;
an inlet of the lubricating oil return pipeline is connected with a support bearing of an internal rotating shaft of the fan to be tested, and an outlet of the lubricating oil return pipeline is connected with an oil return port III of the lubricating oil tank;
the lubricating oil sampling pipeline is connected with the lubricating oil supply pipeline and is used for sampling lubricating oil in the lubricating oil supply pipeline before testing.
5. The fan efficiency detection apparatus as set forth in claim 1, wherein:
the hydraulic oil assembly comprises a hydraulic oil tank, a hydraulic oil pump, a hydraulic oil supply pipeline, a hydraulic oil return pipeline and a hydraulic oil overflow pipeline;
the outlet of the hydraulic oil tank is provided with a second oil suction filter, and the outer side of the hydraulic oil tank body is provided with a second liquid level meter;
the hydraulic oil tank is driven by the hydraulic oil pump to convey hydraulic oil into the high-speed gear box through a hydraulic oil supply pipeline;
the inlet of the hydraulic oil return pipeline is connected with the high-speed gear box, the outlet of the hydraulic oil return pipeline is connected with the first oil return port of the hydraulic oil tank, and a valve for adjusting the return oil pressure is arranged on the hydraulic oil return pipeline so as to meet the requirement of the oil supply pressure;
the inlet of the hydraulic oil overflow pipeline is connected with a hydraulic oil supply pipeline, the outlet of the hydraulic oil overflow pipeline is connected with a second oil return port of the hydraulic oil tank, and an overflow valve is arranged on the hydraulic oil overflow pipeline.
6. The fan efficiency detection apparatus as set forth in claim 1, wherein:
the air supply pipeline is sequentially provided with a valve, a second air filter, a pressure regulating valve and an electromagnetic valve along the flow direction of compressed air;
the second air filter is arranged at the front section of the air supply pipeline and is used for filtering impurities in the compressed air, so that the cleaning of the conveying gas is ensured;
the pressure regulating valve is used for regulating the pressure of compressed air in the air supply pipeline.
7. The fan efficiency detection apparatus as set forth in claim 1, wherein:
the regulating assembly comprises a rectifying assembly and a back pressure assembly;
the rectifying component is arranged at the air inlet of the flow measuring pipe and used for rectifying air flow blown by the fan;
the back pressure component is arranged at the tail end of the flow measuring tube and used for keeping the pressure in the flow measuring tube to meet the test requirement.
8. The fan efficiency detection apparatus as set forth in claim 1, wherein:
and a lifting component is arranged below the flow measuring pipe and used for adjusting the height of the flow measuring pipe to enable the flow measuring pipe to be coaxial with the rotating shaft inside the fan to be measured.
9. The method for detecting the fan efficiency is characterized by comprising the following steps of:
step 1: mounting a fan to be tested on the fan effective rate detection device according to any one of claims 1 to 6, and enabling the internal rotating shaft of the fan to be tested to be coaxial with a flow measuring pipe in a detection system;
step 2: starting an operation control system, enabling the system to enter an automatic operation mode, and starting to work according to the following substeps in sequence:
step 2.1: starting a lubricating oil heating pipeline in the lubricating system to heat lubricating oil to a rated temperature;
step 2.2: opening an air supply pipeline in the sealing system, and performing air sealing on external compressed air to two end faces of a rotating shaft supporting bearing in the fan to be tested through the air supply pipeline;
step 2.3: starting a hydraulic oil supply pipeline in the driving system to supply hydraulic oil into the high-speed gear box; simultaneously starting an oil supply pipeline in the lubrication system to supply oil to a support bearing of an inner rotating shaft of the fan to be tested;
step 2.4: starting a high-speed gear box to drive a fan to rotate until the rotating speed of the fan reaches the test requirement;
step 3: when the oil supply pressure, the gas pressure and the rotating speed of the fan of the hydraulic oil and the lubricating oil all meet the test requirements, the operation control system controls the timing assembly to start timing, data detected by the detection system are transmitted to the operation control system, the operation control system calculates the data according to the calculation logic of the effective rate of the fan, and the effective rate of the fan is output.
10. The method according to claim 9, wherein: the step 1) is specifically as follows:
step 1.1: assembling a fan effective rate detection device;
step 1.2: mounting a fan to be tested on a fan adapter of a high-speed gear box in a driving system;
step 1.3: the fan connecting device in the detection system is connected with the air outlet of the fan to be detected, so that the flow measuring pipe and the rotating shaft inside the fan to be detected are coaxial.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310941433.6A CN117145793A (en) | 2023-07-28 | 2023-07-28 | Device and method for detecting effective rate of fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310941433.6A CN117145793A (en) | 2023-07-28 | 2023-07-28 | Device and method for detecting effective rate of fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117145793A true CN117145793A (en) | 2023-12-01 |
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ID=88905185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310941433.6A Pending CN117145793A (en) | 2023-07-28 | 2023-07-28 | Device and method for detecting effective rate of fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117145793A (en) |
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2023
- 2023-07-28 CN CN202310941433.6A patent/CN117145793A/en active Pending
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