CN118209327A - Method for adjusting working state of core machine and test vehicle table - Google Patents

Method for adjusting working state of core machine and test vehicle table Download PDF

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Publication number
CN118209327A
CN118209327A CN202410306260.5A CN202410306260A CN118209327A CN 118209327 A CN118209327 A CN 118209327A CN 202410306260 A CN202410306260 A CN 202410306260A CN 118209327 A CN118209327 A CN 118209327A
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China
Prior art keywords
working state
core
machine
whole
parameters
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CN202410306260.5A
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罗宿明
张晓爽
周四平
王涛
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Hunan Aviation Powerplant Research Institute AECC
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Hunan Aviation Powerplant Research Institute AECC
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Priority to CN202410306260.5A priority Critical patent/CN118209327A/en
Publication of CN118209327A publication Critical patent/CN118209327A/en
Pending legal-status Critical Current

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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
    • G01M15/00—Testing of engines
    • G01M15/14—Testing gas-turbine engines or jet-propulsion engines
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M15/00—Testing of engines
    • G01M15/02—Details or accessories of testing apparatus
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M15/00—Testing of engines
    • G01M15/04—Testing internal-combustion engines
    • G01M15/042—Testing internal-combustion engines by monitoring a single specific parameter not covered by groups G01M15/06 - G01M15/12
    • G01M15/046—Testing internal-combustion engines by monitoring a single specific parameter not covered by groups G01M15/06 - G01M15/12 by monitoring revolutions
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M15/00—Testing of engines
    • G01M15/04—Testing internal-combustion engines
    • G01M15/042—Testing internal-combustion engines by monitoring a single specific parameter not covered by groups G01M15/06 - G01M15/12
    • G01M15/048—Testing internal-combustion engines by monitoring a single specific parameter not covered by groups G01M15/06 - G01M15/12 by monitoring temperature

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

Abstract

The invention provides a method for adjusting the working state of a core machine and a test vehicle table, and belongs to the technical field of aeroengine testing. The method for adjusting the working state of the core machine comprises the following steps: acquiring parameters of the working state of the whole machine; determining the area of an outlet of an initial tail nozzle of the core machine; acquiring parameters of a working state of a core machine; and comparing the parameters of the working state of the whole machine with the parameters of the working state of the core machine, and adjusting the area of the outlet of the initial tail nozzle of the core machine until the parameters of the working state of the core machine meet the parameter range of the working state of the whole machine. According to the method, the working state of the core machine in the full working speed range is adjusted by changing the outlet area of the tail spray pipe, the inlet flow and the pressure ratio of the core machine can be adjusted by changing the outlet area of the tail spray pipe, so that the working state of the core machine can be adjusted, and the consistency of the working state of the core machine and the working state of the whole machine in the full working speed range can be realized by the adjusting method, so that the validity of a core machine test is ensured.

Description

Method for adjusting working state of core machine and test vehicle table
Technical Field
The invention belongs to the technical field of aero-engine testing, and particularly relates to an adjusting method for the working state of a core engine of an aero-gas turbine shaft engine and a core engine working state test vehicle table.
Background
In the icing test or the compressor dynamic stress measurement test of an air inlet system of an aviation gas turbine shaft engine, a core machine type (i.e. without a power turbine component) is generally adopted for the test due to the limitation of a vehicle test device and the limitation of test modification of the engine.
According to the airworthiness regulation requirement of the aeroengine, when the core machine is adopted for testing, the working state of the core machine needs to be regulated so as to ensure the consistency of the working state of the core machine and the working state of the whole machine in the range of all working rotating speeds, and the validity of the core machine test can be approved.
At present, the core machine working state adjusting method can only achieve consistency of the working state of the core machine and the working state of the whole machine under the design rotating speed; if the working state of the core machine is deviated from the working state of the whole machine, the working state of the core machine is greatly different from the working state of the whole machine, and the consistency of the working state of the core machine and the working state of the whole machine can not be ensured in the whole working rotating speed range.
Disclosure of Invention
Aiming at the problems, the invention provides a method for adjusting the working state of a core machine and a test vehicle table, which are used for solving the technical problems that the working state of the core machine and the working state of the whole machine are greatly different when the working state of the core machine deviates from the design rotating speed in the prior art, the consistency of the working state of the core machine and the working state of the whole machine in the whole working rotating speed range cannot be ensured, and the effectiveness of the core machine test cannot be ensured.
The invention is realized by the following scheme:
A method of adjusting a core operating condition, the method comprising the steps of:
acquiring parameters of the working state of the whole machine;
determining the area of an outlet of an initial tail nozzle of the core machine;
Acquiring parameters of a working state of a core machine;
and comparing the parameters of the working state of the whole machine with the parameters of the working state of the core machine, and adjusting the area of the outlet of the initial tail nozzle of the core machine until the parameters of the working state of the core machine meet the parameter range of the working state of the whole machine.
In order to better realize the invention, the method is further optimized, and the step of obtaining the parameters of the working state of the whole machine comprises the following steps:
The whole machine works in the working state of at least minimum working rotation speed, cruising working rotation speed, maximum continuous working rotation speed and design rotation speed; in each working state, after the working state of the whole machine is stable, recording parameters of the working state of the whole machine.
In order to better implement the present invention, further optimization is performed in the above method, and the obtaining the parameters of the working state of the core machine includes the following steps:
the core machine works in the same working state as the whole machine; in each working state, after the working state of the core machine is stable, recording parameters of the working state of the core machine.
In order to better realize the invention, the method is further optimized, and the parameters of the working state of the whole machine comprise converted flow Wa Finishing the whole and pressure ratio pi Finishing the whole ;
the parameters of the core operating state include the converted flow Wa Nuclear and the pressure ratio pi Nuclear .
In order to better realize the invention, the method is further optimized, and the parameter range that the parameters of the working state of the core machine meet the working state of the whole machine means that the pressure ratio pi Nuclear of the core machine is within the range of pi Finishing the whole plus or minus 2 percent of the pressure ratio pi of the whole machine under the same converted flow Wa.
In order to better realize the invention, the method is further optimized, and under the condition of the same conversion flow Wa, if the pressure ratio pi Nuclear of the core engine is not in the range of the pressure ratio pi Finishing the whole plus or minus 2 percent of the whole engine, the area of the outlet of the initial tail nozzle of the core engine is increased by 5 percent.
In order to better realize the invention, the method is further optimized, and the judgment of the working state stability of the whole machine comprises the following steps:
Respectively selecting the numerical values of 30 continuous sampling points of three state parameters of the working speed, the fuel flow and the gas turbine outlet temperature in the working state of the whole machine, and carrying out arithmetic average to obtain arithmetic average values of whole V Rotation , whole V Flow of and whole V Warm temperature ;
The obtained arithmetic average values of the whole V Rotation , the whole V Flow of and the whole V Warm temperature are respectively compared with the numerical values of 30 continuous sampling points of three state parameters of the working rotation speed, the fuel flow and the gas turbine outlet temperature, and the fluctuation quantity of the numerical values is calculated;
If the fluctuation amounts of the values of 30 continuous sampling points of three state parameters of the working rotation speed, the fuel flow and the gas turbine outlet temperature are respectively in the range of +/-40 rpm, +/-1 kg/h and +/-2K, the working state of the whole machine is stable.
In order to better realize the invention, the method is further optimized, and the judgment of the working state stability of the core machine comprises the following steps:
Respectively selecting values of 30 continuous sampling points of three state parameters of working speed, fuel flow and gas turbine outlet temperature in a core working state, and carrying out arithmetic average to obtain an arithmetic average core V Rotation , a core V Flow of and a core V Warm temperature ;
the obtained arithmetic average values of the core V Rotation , the core V Flow of and the core V Warm temperature are respectively compared with the numerical values of 30 continuous sampling points of three state parameters of the working rotating speed, the fuel flow and the gas turbine outlet temperature, and the fluctuation quantity of the numerical values is calculated;
If the fluctuation amounts of the values of 30 continuous sampling points of three state parameters of the working rotation speed, the fuel flow and the gas turbine outlet temperature are respectively +/-40 rpm, +/-1 kg/h and +/-2K, the working state of the core machine is stable.
In order to better realize the invention, the method is further optimized, and the frequency of the working state parameter data sampling of the whole machine and the working state parameter data sampling of the core machine is 5-10 Hz.
In order to better realize the invention, the method is further optimized, and when the parameters of the working state of the whole machine and the parameters of the working state of the core machine are obtained, the motor loading and the ring control air entraining functions are not started.
In addition, the invention also provides a core machine working state test vehicle table, which comprises a vehicle table body, a computer and an adjusting device:
The computer is in signal connection with the vehicle body and is used for establishing a steady-state performance simulation model of the core machine and determining the area of an outlet of an initial tail jet pipe of the core machine;
the adjusting device is arranged on the platform body and used for adjusting the area of the outlet of the initial tail nozzle of the core machine.
In summary, the present invention has at least the following technical effects:
The adjusting method provided by the invention is used for adjusting the working state of the core machine in the full working speed range by changing the outlet area of the tail jet pipe, and the consistency of the working state of the core machine and the working state of the whole machine in the full working speed range can be realized by the adjusting method, so that the validity of the core machine test is ensured.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 shows a flow chart of a method for adjusting the operating state of a core machine according to the invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment one:
as shown in fig. 1:
A method of adjusting the operating state of a core machine, the method comprising the steps of:
Parameters of the working state of the whole machine are obtained:
The whole machine works in the working state of at least minimum working rotation speed, cruising working rotation speed, maximum continuous working rotation speed and design rotation speed; in each working state, after the working state of the whole machine is stable, recording the working state parameters of the whole machine;
The working state parameters of the whole machine can be recorded after the whole machine respectively works for 3-5 minutes in the working states of at least a minimum working rotating speed, a cruising working rotating speed, a maximum continuous working rotating speed and a designed rotating speed; the working state parameters of the whole machine comprise converted flow Wa Finishing the whole and pressure ratio pi Finishing the whole ;
determining the area of an initial tail nozzle outlet of a core machine:
The method for establishing the steady-state performance simulation model of the core machine is well known in the art and will not be described in detail here;
After the steady-state performance simulation model of the core machine is established, determining the area of an outlet of an initial tail nozzle of the core machine at the design rotating speed by utilizing the steady-state performance simulation model of the core machine;
The area of the initial tail nozzle outlet of the core machine is Ad, and before the test, the area of the initial tail nozzle outlet of the core machine is set to 80% Ad;
Parameters of the working state of the core machine are obtained:
The core machine works in the working state of at least minimum working rotation speed, cruising working rotation speed, maximum continuous working rotation speed and design rotation speed; in each working state, after the working state of the core machine is stable, recording the working state parameters of the core machine;
The core machine works for 3-5 minutes respectively in the working states of at least minimum working rotation speed, cruising working rotation speed, maximum continuous working rotation speed and design rotation speed, so that the working state parameters of the core machine can be recorded; the working state parameters of the core machine comprise converted flow Wa Nuclear and pressure ratio pi Nuclear ;
comparing the parameters of the working state of the whole machine with the parameters of the working state of the core machine:
Comparing the parameters of the working state of the whole machine with the parameters of the working state of the core machine;
Under the condition of the same conversion flow Wa, if the pressure ratio pi Nuclear of the core machine is not in the range of pi Finishing the whole plus or minus 2 percent of the pressure ratio of the whole machine, increasing the area of an outlet of an initial tail nozzle of the core machine, and repeating the steps of obtaining parameters of the working state of the core machine and comparing the parameters of the working state of the whole machine with the parameters of the working state of the core machine until the pressure ratio pi Nuclear of the core machine is in the range of pi Finishing the whole plus or minus 2 percent of the pressure ratio of the whole machine;
At this time, the working state of the core machine is consistent with the working state of the whole machine in all working rotation speed ranges, so that the core machine test is completed.
It should be noted that, the initial tail nozzle of the core engine is a convergent tail nozzle, that is, the area of the inlet of the initial tail nozzle of the core engine is larger than the area of the outlet of the initial tail nozzle of the core engine, and the whole initial tail nozzle is in a conical structure.
Optimally, under the condition of the same converted flow Wa, if the pressure ratio pi Nuclear of the core machine is not in the range of pi Finishing the whole plus or minus 2 percent of the whole machine pressure ratio pi Finishing the whole , the area of the outlet of the initial tail nozzle of the core machine is increased by 5 percent Ad, and the steps of obtaining parameters of the working state of the core machine and comparing the parameters of the working state of the core machine with the parameters of the working state of the core machine are repeated until the pressure ratio pi Nuclear of the core machine is in the range of pi Finishing the whole plus or minus 2 percent of the whole machine pressure ratio pi.
The adjusting range of the outlet area of the initial tail nozzle of the core machine is 80-120% Ad;
when the outlet area of the initial tail jet pipe of the core engine exceeds the range, the working state of the core engine is difficult to achieve consistency with the working state of the whole engine, which indicates that the test structure of the core engine cannot meet the aviation regulation requirement of the aeroengine;
And because the initial tail nozzle of the core machine is of a conical structure, when the area of the outlet of the initial tail nozzle of the core machine needs to be increased, the area of the outlet of the initial tail nozzle of the core machine can be increased only by cutting off a part of the small end of the initial tail nozzle of the core machine, so that the adjusting method is simpler.
The method is to adjust the working state of the core engine in the full working speed range by changing the outlet area of the initial tail nozzle of the core engine, and the working state of the core engine is greatly different from the working state of the whole engine under the normal working state due to the lack of a power turbine part of the core engine;
The inlet flow and the pressure ratio of the core machine can be adjusted by changing the outlet area of the tail jet pipe, and the working state of the core machine can be changed accordingly.
Optimally, the judgment of the working state stability of the whole machine comprises the following steps:
30 continuous sampling points D Rotation -D Rotation of the working rotation speed in the working state of the whole machine are selected for arithmetic average to obtain an arithmetic average value V Rotation ;
Comparing the difference value of the whole D Rotation to the whole D Rotation with the difference value of the whole V Rotation respectively, and calculating the fluctuation amount whole delta Rotation 1 to whole delta Rotation of the 30 data;
30 continuous sampling points D Flow of -D Flow of of the fuel flow in the working state of the whole machine are selected for arithmetic average to obtain an arithmetic average value V Flow of ;
comparing the difference value of the whole D Flow of to the whole D Flow of with the difference value of the whole V Flow of respectively, and calculating the fluctuation amount whole delta Flow of 1 to whole delta Flow of of the 30 data;
30 continuous sampling points D Warm temperature -D Warm temperature of the outlet temperature of the gas turbine in the working state of the whole machine are selected for arithmetic average to obtain an arithmetic average value V Warm temperature ;
comparing the difference value of the whole D Warm temperature to the whole D Warm temperature with the difference value of the whole V Warm temperature respectively, and calculating the fluctuation amount whole delta Warm temperature 1 to whole delta Warm temperature of the 30 data;
If the integral delta Rotation 1-integral delta Rotation 30 is within the range of +/-40 rpm, the integral delta Flow of 1-integral delta Flow of is within the range of +/-1 kg/h and the integral delta Warm temperature 1-integral delta Warm temperature is within the range of +/-2K, the working state of the whole machine is stable.
It should be noted that, 30 continuous sampling points of the working rotation speed, 30 continuous sampling points of the fuel flow and 30 continuous sampling points of the gas turbine outlet temperature in the working state of the whole machine can be simultaneously selected and subjected to arithmetic average so as to improve the test efficiency of the core machine.
Optimally, the judgment of the stability of the working state of the core machine comprises the following steps:
30 continuous sampling points D Rotation -D Rotation of the working rotation speed in the working state of the core machine are selected for arithmetic average to obtain an arithmetic average core V Rotation ;
comparing the difference between the core D Rotation and the core D Rotation with the core V Rotation , respectively, and calculating the fluctuation amount core delta Rotation 1 and the core delta Rotation of the 30 data;
Selecting 30 continuous sampling points D Flow of -D Flow of of the fuel flow in the working state of the core machine to carry out arithmetic average to obtain an arithmetic average core V Flow of ;
Comparing the difference between the core D Flow of and the core D Flow of with the core V Flow of , respectively, and calculating the fluctuation amount core delta Flow of 1 and the core delta Flow of of the 30 data;
30 continuous sampling points D Warm temperature -D Warm temperature of the outlet temperature of the gas turbine in the working state of the core machine are selected for arithmetic average to obtain an arithmetic average core V Warm temperature ;
Comparing the difference between the core D Warm temperature and the core D Warm temperature with the core V Warm temperature , respectively, and calculating the fluctuation amount core delta Warm temperature 1 and the core delta Warm temperature of the 30 data;
If the core Δ Rotation 1-core Δ Rotation 30 is within ±40rpm, the core Δ Flow of 1-core Δ Flow of 30 is within ±1kg/h, and the core Δ Warm temperature 1-core Δ Warm temperature 30 is within ±2K, it is indicated that the operation state of the core machine is stable.
It should be noted that, 30 continuous sampling points of the working rotation speed, 30 continuous sampling points of the fuel flow and 30 continuous sampling points of the gas turbine outlet temperature in the working state of the core machine can be simultaneously selected and subjected to arithmetic average so as to further improve the test efficiency of the core machine.
Optimally, the frequency of the working state parameter data sampling of the whole machine and the working state parameter data sampling of the core machine is 5-10 Hz.
Optimally, when the parameters of the working state of the whole machine and the parameters of the working state of the core machine are obtained, the motor loading and environmental control air entraining functions are not started, so that the accuracy of the core machine test is ensured.
The adjusting method is verified on a core machine of a turboshaft engine of an aviation gas turbine, and the core machine adopting the adjusting method successfully completes an icing test of an air inlet system and a dynamic stress measurement test of a compressor and obtains the approval of a navigable approval center.
Embodiment two:
the utility model provides a core operating condition test car bench, it includes car bench body, computer and adjusting device: wherein,
The vehicle table body is completely the same as a vehicle table used for carrying out an icing test or a compressor dynamic stress measurement test of an air inlet system of an aviation gas turbine shaft engine in the prior art;
The computer is in signal connection with the vehicle table body and is used for establishing a steady-state performance simulation model of the core machine and determining the area of an initial tail nozzle outlet of the core machine at the design rotating speed by utilizing the steady-state performance simulation model of the core machine;
The adjusting device is arranged on the platform body and used for adjusting the area of the outlet of the initial tail nozzle of the core machine.
The core machine working state test vehicle table can change the outlet area of the tail spray pipe through the adjusting device so as to adjust the working state of the core machine in the full working rotating speed range, thereby realizing the consistency of the working state of the core machine and the working state of the whole machine in the full working rotating speed range and ensuring the validity of the core machine test.
It should be noted that the adjusting device may be a cutting device for cutting the initial tail nozzle of the core machine, so as to make the adjustment of the area of the outlet of the initial tail nozzle of the core machine more convenient.
Although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (11)

1. A method for adjusting the working state of a core machine is characterized by comprising the following steps: the adjusting method comprises the following steps:
acquiring parameters of the working state of the whole machine;
determining the area of an outlet of an initial tail nozzle of the core machine;
Acquiring parameters of a working state of a core machine;
and comparing the parameters of the working state of the whole machine with the parameters of the working state of the core machine, and adjusting the area of the outlet of the initial tail nozzle of the core machine until the parameters of the working state of the core machine meet the parameter range of the working state of the whole machine.
2. The method for adjusting the operating state of a core machine according to claim 1, wherein: the step of obtaining the parameters of the working state of the whole machine comprises the following steps:
The whole machine works in the working state of at least minimum working rotation speed, cruising working rotation speed, maximum continuous working rotation speed and design rotation speed; in each working state, after the working state of the whole machine is stable, recording parameters of the working state of the whole machine.
3. The method for adjusting the operating state of a core machine according to claim 2, wherein: the method for acquiring the parameters of the working state of the core machine comprises the following steps:
The core machine works in the same working state as the whole machine; in each working state, after the working state of the core machine is stable, recording parameters of the working state of the core machine.
4. A method of adjusting core operating conditions as claimed in claim 3, wherein: the parameters of the working state of the whole machine comprise converted flow Wa Finishing the whole and pressure ratio pi Finishing the whole ;
the parameters of the core operating state include the converted flow Wa Nuclear and the pressure ratio pi Nuclear .
5. The method for adjusting the operating state of a core machine according to claim 4, wherein: the parameter range that the parameter of the core machine working state meets the working state of the whole machine means that the pressure ratio pi Nuclear of the core machine is within the range of pi Finishing the whole plus or minus 2% of the pressure ratio pi of the whole machine under the same conversion flow Wa.
6. The method for adjusting the operating state of a core machine according to claim 5, wherein: under the condition of the same converted flow Wa, if the pressure ratio pi Nuclear of the core machine is not in the range of pi Finishing the whole plus or minus 2% of the pressure ratio pi Finishing the whole of the whole machine, the area of the outlet of the initial tail nozzle of the core machine is increased by 5%.
7. The method for adjusting the operating state of a core machine according to claim 2, wherein: the judging of the working state stability of the whole machine comprises the following steps:
Respectively selecting the numerical values of 30 continuous sampling points of three state parameters of the working speed, the fuel flow and the gas turbine outlet temperature in the working state of the whole machine, and carrying out arithmetic average to obtain arithmetic average values of whole V Rotation , whole V Flow of and whole V Warm temperature ;
The obtained arithmetic average values of the whole V Rotation , the whole V Flow of and the whole V Warm temperature are respectively compared with the numerical values of 30 continuous sampling points of three state parameters of the working rotation speed, the fuel flow and the gas turbine outlet temperature, and the fluctuation quantity of the numerical values is calculated;
If the fluctuation amounts of the values of 30 continuous sampling points of three state parameters of the working rotation speed, the fuel flow and the gas turbine outlet temperature are respectively in the range of +/-40 rpm, +/-1 kg/h and +/-2K, the working state of the whole machine is stable.
8. A method of adjusting core operating conditions as claimed in claim 3, wherein: the judging of the working state stability of the core machine comprises the following steps:
Respectively selecting values of 30 continuous sampling points of three state parameters of working speed, fuel flow and gas turbine outlet temperature in a core working state, and carrying out arithmetic average to obtain an arithmetic average core V Rotation , a core V Flow of and a core V Warm temperature ;
the obtained arithmetic average values of the core V Rotation , the core V Flow of and the core V Warm temperature are respectively compared with the numerical values of 30 continuous sampling points of three state parameters of the working rotating speed, the fuel flow and the gas turbine outlet temperature, and the fluctuation quantity of the numerical values is calculated;
If the fluctuation amounts of the values of 30 continuous sampling points of three state parameters of the working rotation speed, the fuel flow and the gas turbine outlet temperature are respectively +/-40 rpm, +/-1 kg/h and +/-2K, the working state of the core machine is stable.
9. The method for adjusting the operating state of a core machine according to claim 1, wherein: the frequency of the working state parameter data sampling of the whole machine and the working state parameter data sampling of the core machine is 5-10 Hz.
10. The method for adjusting the operating state of a core machine according to any one of claims 1 to 9, characterized in that: when the parameters of the working state of the whole machine and the parameters of the working state of the core machine are obtained, the motor loading and the ring control air entraining function are not started.
11. The utility model provides a core operating condition test car platform which characterized in that: comprises a vehicle table body, a computer and an adjusting device:
The computer is in signal connection with the vehicle body and is used for establishing a steady-state performance simulation model of the core machine and determining the area of an outlet of an initial tail jet pipe of the core machine;
the adjusting device is arranged on the platform body and used for adjusting the area of the outlet of the initial tail nozzle of the core machine.
CN202410306260.5A 2024-03-18 2024-03-18 Method for adjusting working state of core machine and test vehicle table Pending CN118209327A (en)

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Application Number Priority Date Filing Date Title
CN202410306260.5A CN118209327A (en) 2024-03-18 2024-03-18 Method for adjusting working state of core machine and test vehicle table

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202410306260.5A CN118209327A (en) 2024-03-18 2024-03-18 Method for adjusting working state of core machine and test vehicle table

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Publication Number Publication Date
CN118209327A true CN118209327A (en) 2024-06-18

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