CN115979657A - Early warning method and device suitable for working state of aviation turboshaft engine - Google Patents
Early warning method and device suitable for working state of aviation turboshaft engine Download PDFInfo
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- CN115979657A CN115979657A CN202310050639.XA CN202310050639A CN115979657A CN 115979657 A CN115979657 A CN 115979657A CN 202310050639 A CN202310050639 A CN 202310050639A CN 115979657 A CN115979657 A CN 115979657A
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Abstract
The invention provides a method and a device suitable for early warning of the working state of an aviation turboshaft engine, which comprise the following steps: obtaining an early warning strategy type, and determining a monitoring object related to the engine according to the early warning strategy type; obtaining the use time information and the use frequency information aiming at the monitored object according to the early warning strategy in the early warning strategy type; and determining an early warning identifier, a maintenance identifier and an early warning strategy adjusting mode corresponding to the monitored object according to the using time information and the using frequency information. The invention accurately acquires the service time information and the service frequency information of the working state of the engine through the corresponding early warning strategy, and displays the corresponding early warning mark, so that the working personnel can more clearly acquire the service state of the engine in the OEI state, thereby ensuring the flight safety. In addition, ground maintenance support personnel can timely and accurately carry out maintenance according to the operation condition under the OEI state according to the maintenance identification acquired under the OEI state.
Description
Technical Field
The invention relates to the technical field of performance testing of aviation transmitters, in particular to a working state early warning method and a working state early warning device suitable for an aviation turboshaft engine.
Background
The non-operating state of one engine used in the emergency state of the aircraft is called OEI (OneEngine operating) state for short. When an aircraft equipped with two engines runs in the air, the engines may be stopped in the air due to poor oil supply and air intake of the engines of the aircraft, mechanical failure of the engines, ice accumulation in clouds, improper use of an anti-icing system and the like in some cases. Thus, when an aircraft encounters an engine failure while in operation, it must be ensured that the flight can be safely ended without incident.
The OEI alarm logic of the engine of the existing aircraft is simple, the OEI alarm logic is mainly characterized in that the engine enters the OEI state according to the temperature state range confirmed by setting the rotating speed of the gas turbine and the temperature state range of the outlet of the gas turbine, and then a 10s countdown state bit is given out in a control system. In addition, in the conventional engine OEI alarm strategy, the logic of countdown time in a control system does not distinguish single entry time from accumulated time, and no engine maintenance flag bit is given after the engine OEI state exits. The pilot can not clearly understand the use of the OEI state of the engine, the using condition of the OEI of the engine can be seen only by analyzing flight data after the OEI state of the engine is used, and a clear maintenance mark can not be given after the airplane lands.
Therefore, how to know the use state of the engine more clearly in the OEI state to ensure flight safety and enable ground maintenance support staff to perform maintenance timely and accurately according to the operation condition in the OEI state becomes a problem to be solved urgently by the technical staff in the field.
Disclosure of Invention
The invention aims to provide a working state early warning method and a working state early warning device suitable for an aviation turboshaft engine, and aims to solve the problems that how to more clearly know the using state of the engine in an OEI state in the prior art so as to ensure flight safety and enable ground maintenance support personnel to timely and accurately carry out maintenance work according to the running condition in the OEI state.
In order to achieve the purpose, the invention provides a working state early warning method suitable for an aviation turboshaft engine, which comprises the following steps: obtaining an early warning strategy type, and determining a monitoring object related to the engine according to the early warning strategy type;
obtaining use time information and use frequency information aiming at the monitored object according to an early warning strategy in the early warning strategy type; the early warning strategy type comprises an Ng/T45 counting early warning strategy type and an MKp counting early warning strategy type;
and determining an early warning identifier, a maintenance identifier and an early warning strategy adjusting mode corresponding to the monitored object according to the using time information and the using time information.
Optionally, the monitoring object includes: determining the working operation state of the engine according to the Ng/T45 counting early warning strategy type; and determining and relating the torque use state of the engine according to the MKp counting early warning strategy type.
Optionally, the obtaining the usage time information and the usage time information for the monitored object according to the early warning policy in the early warning policy type includes:
obtaining the service time information and the service frequency information aiming at the working running state of the engine according to the Ng/T45 counting strategy in the Ng/T45 counting early warning strategy type; and (c) a second step of,
and obtaining the use time information and the use frequency information aiming at the torque use state of the engine according to the MKp counting strategy in the MKp counting early warning strategy type.
Optionally, determining an early warning identifier, a maintenance identifier and an early warning policy adjustment mode corresponding to the monitored object according to the usage time information and the usage frequency information, including: the method comprises the steps of determining an early warning mark and a maintenance mark corresponding to the working operation state of the engine according to the service time information of the working operation state of the engine, determining an early warning strategy adjusting mode corresponding to the working operation state of the engine according to the service frequency information of the working operation state of the engine, and determining an early warning mark, a maintenance mark and an early warning strategy adjusting mode corresponding to a torque monitoring object of the engine according to the service time information and the service frequency information of the torque service state of the engine.
Optionally, the determining, according to the service time information of the working operation state of the engine, an early warning identifier and a maintenance identifier corresponding to the working operation state of the engine includes:
obtaining a preset use time threshold value and a preset use time extreme value which are preset and related to the working running state of the engine;
matching the service time information of the working running state of the engine with the preset service time threshold and a preset service time extreme value to obtain first time information which is greater than the preset service time threshold, second time information which is less than the preset service time threshold and third time information which meets the preset service time extreme value;
and determining corresponding early warning identification and maintenance identification according to the first time information, the second time information and the third time information respectively.
Optionally, the method further includes: upon obtaining a service indicator for an operating state of the engine, the Ng/T45 counting strategy obtains incremental service indicator data for the service indicator.
Optionally, the method further includes:
obtaining maintenance elimination information for the maintenance identification;
and eliminating the added maintenance identification data aiming at the maintenance identification according to the maintenance elimination information.
Optionally, the Ng/T45 counting policy and the MKp counting policy respectively obtain corresponding usage time information and usage time information in a reverse counting policy.
Optionally, the maintenance identifier includes maintenance identifiers of different grades, and the maintenance identifiers of different grades are determined according to the time lengths of the first time information terminal, the second time information, and the third time information.
The invention also provides a working state early warning device suitable for the aviation turboshaft engine, which comprises the following components:
the monitoring object determining unit is used for obtaining an early warning strategy type and determining a monitoring object related to the engine according to the early warning strategy type; the early warning strategy type comprises an Ng/T45 counting early warning strategy type and an MKp counting early warning strategy type;
the using information obtaining unit is used for obtaining using time information and using frequency information aiming at the monitoring object according to the early warning strategy in the early warning strategy type;
and the early warning information determining unit is used for determining an early warning mark, a maintenance mark and an early warning strategy adjusting mode corresponding to the monitored object according to the using time information and the using frequency information.
The invention has the technical effects and advantages that:
the invention provides a working state early warning method suitable for an aviation turboshaft engine, which comprises the following steps: obtaining an early warning strategy type, and determining a monitoring object related to the engine according to the early warning strategy type; the early warning strategy type comprises an Ng/T45 counting early warning strategy type and an MKp counting early warning strategy type; obtaining use time information and use frequency information aiming at the monitored object according to an early warning strategy in the early warning strategy type; and determining an early warning identifier, a maintenance identifier and an early warning strategy adjusting mode corresponding to the monitored object according to the using time information and the using frequency information. The service time information and the service frequency information of the working state of the engine are accurately obtained through the corresponding early warning strategy, and the corresponding early warning mark is displayed, so that the working personnel can more clearly obtain the service state of the engine in the OEI state, and the flight safety is ensured. In addition, ground maintenance support personnel can timely and accurately carry out maintenance according to the operation condition under the OEI state according to the maintenance identification acquired under the OEI state.
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 the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
FIG. 1 is a flow chart of a method for early warning of operating conditions of an aircraft turboshaft engine;
fig. 2 is a schematic structural diagram of the early warning device suitable for the working state of the aviation turboshaft engine.
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 embodiment of the invention provides a working state early warning method suitable for an aviation turboshaft engine, and aims to solve the problems that how to more clearly know the use state of the engine in an OEI state in the prior art so as to ensure flight safety and enable ground maintenance support personnel to timely and accurately carry out maintenance work according to the running condition in the OEI state. As shown in fig. 1. The method comprises the following steps:
1. and obtaining an early warning strategy type, and determining a monitoring object related to the engine according to the early warning strategy type.
In this step, the early warning policy type includes an Ng/T45 counting early warning policy type and an MKp counting early warning policy type. The Ng/T45 counting early warning strategy type corresponds to an Ng/T45 counting strategy and is realized by a set Ng/T45 counting device, the Ng/T45 counting device comprises a time counter and a frequency counter, after the engine enters an OEI state, the time counter can be used for carrying out single-time counting and accumulated counting of the use time on the engine state in working operation, and the time counter can be used for carrying out single-time counting and accumulated counting of the use frequency, so that the working operation condition of the engine can be accurately obtained. The MKp counting early warning strategy type corresponds to the MKp counting strategy, and is realized by a set MKp counting device, the MKp counting device comprises a time counter and a number counter, after the engine enters an OEI state, the time counter can be used for counting the single use time and the accumulated use time, and the number counter can be used for counting the single use time and the accumulated use number.
In the present step, the monitoring target associated with the engine includes an operating state monitoring target associated with the engine and a torque use state monitoring target associated with the engine. Correspondingly, the method for determining the monitoring object related to the engine according to the early warning strategy type comprises the following steps: determining a monitoring object related to the working running state of the engine according to the Ng/T45 counting early warning strategy type; and determining a torque use state monitoring object related to the engine according to the MKp counting early warning strategy type.
2. And obtaining the use time information and the use frequency information aiming at the monitored object according to the early warning strategy in the early warning strategy type.
After the early warning strategy type and the monitoring object corresponding to the early warning strategy type are determined, the use time information and the use frequency information of the monitoring object can be obtained according to the early warning strategy in the early warning strategy type, specifically, the use time information and the use frequency information of the monitoring object of the working operation state of the engine are obtained according to the Ng/T45 counting strategy in the Ng/T45 counting early warning strategy type, and specifically, the working operation state of the engine is counted by a time counter in an Ng/T45 counting device so as to obtain the corresponding use time information. And counting the number of times of the monitoring object of the working running state of the engine through a number counter in the Ng/T45 counting device so as to obtain corresponding use number information. And obtaining the use time information and the use frequency information of the torque use state monitoring object aiming at the engine according to the MKp counting strategy in the MKp counting early warning strategy type. Specifically, the torque use state monitoring object of the engine is counted by a time counter in the MKp counting device to obtain corresponding use time information. And counting the number of times of the torque use state monitoring object of the engine through a number counter in the MKp counting device so as to obtain corresponding use number information.
It should be noted that, in the embodiment of the present invention, the Ng/T45 counting policy and the MKp counting policy respectively obtain corresponding usage time information and usage time information in a reverse counting policy. For example, setting the initial value of the time counter in the Ng/T45 counting device to 60s, the OEI state usage time is gradually increased as the OEI state of the engine progresses, and the value of the time counter in the Ng/T45 counting device is correspondingly decreased, namely the OEI state time is 10s, the value of the time counter is changed to 50s. Similarly, the initial value of the number counter in the Ng/T45 counting device is 10, as the OEI state of the invention proceeds, the number of times of use in the OEI state is gradually increased, and the value of the number counter in the Ng/T45 counting device is correspondingly decreased, that is, the number of times of use in the OEI state is 5, the value of the number counter is further changed to 5. The MKp counting device is also a similar technical mode, and specific examples can be seen in an Ng/T45 counting device. Correspondingly, the Ng/T45 counting strategy for obtaining the usage time information and the usage number information of the monitoring object for the working operation state of the engine may be the remaining usage time information and the remaining usage number information, for example, the remaining usage time information is 5s, and the remaining usage number information is 5 times.
3. And determining an early warning identifier, a maintenance identifier and an early warning strategy adjusting mode corresponding to the monitored object according to the using time information and the using frequency information.
After obtaining the use time information and the use time information aiming at each monitored object, determining an early warning identifier, a maintenance identifier and an early warning strategy adjusting mode corresponding to the monitored object according to the use time information and the use time information. Specifically, an early warning identifier, a maintenance identifier and an early warning strategy adjusting mode corresponding to the working operation state monitoring object of the engine are determined according to the use time information and the use frequency information of the working operation state monitoring object of the engine; and determining an early warning identifier, a maintenance identifier and an early warning strategy adjusting mode corresponding to the torque using state monitoring object of the engine according to the using time information and the using frequency information of the torque using state monitoring object of the engine.
Further, according to the using time information and the using times information of the working operation state monitoring object of the engine, determining an early warning identifier, a maintenance identifier and an early warning strategy adjusting mode corresponding to the working operation state monitoring object of the engine, the method comprises the following steps: and determining an early warning mark and a maintenance mark corresponding to the working operation state monitoring object of the engine according to the service time information of the working operation state monitoring object of the engine, and determining an early warning strategy adjusting mode corresponding to the working operation state monitoring object of the engine according to the service frequency information of the working operation state monitoring object of the engine.
In this embodiment, determining the early warning identifier and the maintenance identifier corresponding to the monitoring object of the operating state of the engine according to the service time information of the monitoring object of the operating state of the engine includes: acquiring a preset use time threshold value and a preset use time extreme value which are preset and associated with a work running state monitoring object of the engine, matching use time information of the work running state monitoring object of the engine with the preset use time threshold value and the preset use time extreme value, and acquiring first time information larger than the preset use time threshold value, second time information smaller than the preset use time threshold value and third time information meeting the preset use time extreme value according to the first time information respectively; and determining corresponding early warning identification and maintenance identification by the second time information and the third time information.
In this embodiment, the preset usage time threshold is set to 5s, and the preset usage time extremum is 0s. Correspondingly, the first time information is time information greater than 5, the second time information is time information less than 5, and the third time information is 0s. Correspondingly, the early warning identifier corresponding to the first time information is ' display ' use OE ', the early warning identifier corresponding to the second time information is ' OEI last 5 seconds ', and the early warning identifier corresponding to the third time information is ' OEI use overtime '. And displaying the early warning marks on an operation interface of a driver in real time. Through OEI use, OEI remaining time and OEI use overrun, a pilot can know the use state of the engine more clearly and accurately, and psychological burden of the pilot is reduced.
In addition, in this embodiment, each time the service time information of the monitoring object for the working operation state is obtained, the corresponding fault information is detected in real time, and the corresponding maintenance identifier is generated according to the fault information. After obtaining the corresponding maintenance identification, the Ng/T45 counting policy obtains the added maintenance identification data for the maintenance identification, that is, records the content of the maintenance identification +1 in the time counter, and sends the added maintenance identification data to the corresponding processing system. When in maintenance, the crew can maintain according to the added maintenance identification data, after the crew maintains the corresponding fault, the crew can obtain maintenance elimination information aiming at the maintenance identification, and the added maintenance identification data aiming at the maintenance identification is eliminated according to the maintenance elimination information. For example, when there is a previous fault, the time counter records the maintenance mark +1, and after the fault is repaired, the time counter records the maintenance mark-1, that is, the maintenance mark recorded in the time counter is restored to the original state. In addition, because the overtime situation is more serious, the corresponding overtime mark can also be recorded.
Further, in order to enable the crew member to know the degree of the fault, the maintenance identifiers corresponding to the faults of different degrees include maintenance identifiers of different levels, in an example, the maintenance identifiers of different levels are according to the first time information; and determining the time length of the second time information and the third time information. For example, the longer the remaining time is, the lower the failure degree is, the lower the corresponding grade of the maintenance identifier is; and conversely, the shorter the remaining time is, the higher the fault degree is, and the higher the grade of the corresponding maintenance identifier is. In the embodiment, ground unit support personnel can know the running condition of the engine in the OEI state without data analysis through the maintenance zone bit, so that the time of related data analysis is shortened, and the maintenance level of the engine is determined.
In this embodiment, when the counting is completed, the numbers corresponding to the time counter and the number counter included in the Ng/T45 counting device may be reset, and the numbers of the time counter and the number counter included in the MKp counting device may be reset.
In this embodiment, the early warning identifier and the maintenance identifier corresponding to the torque use state monitoring object of the engine are determined according to the use time information and the use frequency information of the torque use state monitoring object of the engine, and the early warning policy adjustment manner may refer to the content of the early warning identifier, the maintenance identifier and the early warning policy adjustment manner determined according to the use time information and the use frequency information of the torque use state monitoring object of the engine, which are not described in detail herein. The MKp counting strategy of the embodiment can record the use condition of the torque limit of the engine, and is used for providing data support for safety analysis of an airplane transmission system.
The invention also provides a working state early warning device suitable for the aviation turboshaft engine, which is shown in figure 2. The device includes: the monitoring object determining unit is used for obtaining an early warning strategy type and determining a monitoring object related to the engine according to the early warning strategy type; the using information obtaining unit is used for obtaining using time information and using frequency information aiming at the monitoring object according to the early warning strategy in the early warning strategy type; and the early warning information determining unit is used for determining an early warning identifier, a maintenance identifier and an early warning strategy adjusting mode corresponding to the monitored object according to the using time information and the using frequency information.
Since the protection scheme of the device is similar to the protection scheme of the method, the description is not repeated, and the explanation part of the method is referred to in detail.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (10)
1. The early warning method suitable for the working state of the aviation turboshaft engine is characterized by comprising the following steps of:
obtaining an early warning strategy type, and determining a monitoring object related to the engine according to the early warning strategy type; the early warning strategy type comprises an Ng/T45 counting early warning strategy type and an MKp counting early warning strategy type;
obtaining use time information and use frequency information aiming at the monitored object according to an early warning strategy in the early warning strategy type;
and determining an early warning identifier, a maintenance identifier and an early warning strategy adjusting mode corresponding to the monitored object according to the using time information and the using frequency information.
2. The early warning method for the working state of the aviation turboshaft engine according to claim 1, wherein the monitoring object comprises: determining the working operation state of the engine according to the Ng/T45 counting early warning strategy type; and determining and relating the torque using state of the engine according to the MKp counting early warning strategy type.
3. The early warning method for the working state of the aviation turboshaft engine according to claim 2, wherein the step of obtaining the usage time information and the usage time information of the monitored object according to the early warning strategy in the early warning strategy type comprises the following steps:
obtaining the use time information and the use frequency information aiming at the working running state of the engine according to the Ng/T45 counting strategy in the Ng/T45 counting early warning strategy type; and the number of the first and second groups,
and obtaining the use time information and the use frequency information aiming at the torque use state of the engine according to the MKp counting strategy in the MKp counting early warning strategy type.
4. The early warning method suitable for the working state of the aviation turboshaft engine according to claim 3, wherein the determining of the early warning mark, the maintenance mark and the early warning strategy adjustment mode corresponding to the monitored object according to the use time information and the use frequency information comprises:
the method comprises the steps of determining an early warning mark and a maintenance mark corresponding to the working operation state of the engine according to the service time information of the working operation state of the engine, determining an early warning strategy adjusting mode corresponding to the working operation state of the engine according to the service frequency information of the working operation state of the engine, and determining an early warning mark, a maintenance mark and an early warning strategy adjusting mode corresponding to a torque monitoring object of the engine according to the service time information and the service frequency information of the torque service state of the engine.
5. The early warning method suitable for the working state of the aviation turboshaft engine according to claim 4, wherein the step of determining the early warning mark and the maintenance mark corresponding to the working state of the engine according to the service time information of the working state of the engine comprises the following steps:
obtaining a preset use time threshold value and a preset use time extreme value which are preset and related to the working running state of the engine;
matching the service time information of the working running state of the engine with the preset service time threshold and a preset service time extreme value to obtain first time information which is greater than the preset service time threshold, second time information which is less than the preset service time threshold and third time information which meets the preset service time extreme value;
and determining corresponding early warning identification and maintenance identification according to the first time information, the second time information and the third time information respectively.
6. The early warning method suitable for the working state of the aviation turboshaft engine according to claim 5, further comprising: upon obtaining a service indicator for an operating state of the engine, the Ng/T45 counting strategy obtains incremental service indicator data for the service indicator.
7. The early warning method suitable for the working state of the aviation turboshaft engine according to claim 6, further comprising:
obtaining maintenance elimination information aiming at the maintenance identification;
and eliminating the added maintenance identification data aiming at the maintenance identification according to the maintenance elimination information.
8. The early warning method suitable for the working state of the aviation turboshaft engine according to claim 3, wherein the Ng/T45 counting strategy and the MKp counting strategy respectively obtain corresponding service time information and service frequency information in a reverse counting strategy.
9. The early warning method suitable for the working state of the aviation turboshaft engine according to claim 5, wherein the maintenance marks comprise different levels of maintenance marks, and the different levels of maintenance marks are determined according to the time lengths of the first time information terminal, the second time information terminal and the third time information terminal.
10. The utility model provides a be applicable to aviation turboshaft engine operating condition early warning device which characterized in that includes:
the monitoring object determining unit is used for obtaining an early warning strategy type and determining a monitoring object related to the engine according to the early warning strategy type; the early warning strategy type comprises an Ng/T45 counting early warning strategy type and an MKp counting early warning strategy type;
the using information obtaining unit is used for obtaining using time information and using frequency information aiming at the monitoring object according to the early warning strategy in the early warning strategy type;
and the early warning information determining unit is used for determining an early warning mark, a maintenance mark and an early warning strategy adjusting mode corresponding to the monitored object according to the using time information and the using frequency information.
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