CN114320596B - Parallel operation monitoring method and device for diesel engine, electronic equipment and medium - Google Patents
Parallel operation monitoring method and device for diesel engine, electronic equipment and medium Download PDFInfo
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Abstract
The application provides a diesel engine parallel operation monitoring method, a diesel engine parallel operation monitoring device, electronic equipment and a diesel engine parallel operation monitoring medium, wherein the method comprises the following steps: determining a plurality of single-engine oil consumption rates corresponding to a plurality of diesel engines according to single-engine power of the diesel engines connected in parallel and branch pipeline pressures of fuel pipeline branches corresponding to the diesel engines; determining a first relative margin according to the plurality of single-machine fuel consumption rates; the first relative range characterizes a degree of dispersion of the single fuel consumption rate of the plurality of diesel engines; if the first relative range is monitored to exceed a preset first threshold, determining that the parallel operation consistency of the parallel operation unit is abnormal; the first threshold value represents the allowable fluctuation range of the single-engine oil consumption rate of the plurality of diesel engines when the vehicle is combined; the parallel operation unit comprises a plurality of diesel engines connected with each other in parallel operation. The method can early warn the tourist car of the parallel operation unit in the test or use, and reduce the occurrence of the tourist car of the parallel operation unit.
Description
Technical Field
The application relates to the technical field of automobile electronics, in particular to a diesel engine parallel operation monitoring method, a diesel engine parallel operation monitoring device, electronic equipment and a diesel engine parallel operation monitoring medium.
Background
With the more complicated application working conditions of diesel engines, a plurality of diesel engines are commonly used for parallel operation, and the problem that the oil supply quantity of a high-power pipeline is insufficient easily occurs, so that the parallel operation power exceeds a certain value, and the normal use of a unit is seriously affected.
For middle-low end diesel engines, especially mechanical pump diesel engines, a monitoring means for parallel operation of the diesel engines is often lacking, traveling vehicles are easy to cause, and fault reasons are not easy to check.
Disclosure of Invention
The embodiment of the application provides a diesel engine parallel operation monitoring method, device, electronic equipment and medium, which can determine the discrete degree of the single engine oil consumption rate based on the branch pipeline pressure at the branch of a fuel pipeline and the single engine power of a parallel operation unit, monitor whether the parallel operation consistency of the parallel operation unit is abnormal or not, and reduce the occurrence of traveling vehicles of the parallel operation unit.
In a first aspect, an embodiment of the present application provides a method for monitoring parallel operation of a diesel engine, where the method includes:
determining a plurality of single-engine oil consumption rates corresponding to a plurality of diesel engines according to single-engine power of the diesel engines connected in parallel and branch pipeline pressures of fuel pipeline branches corresponding to the diesel engines;
determining a first relative margin according to the plurality of single-machine fuel consumption rates; the first relative range characterizes a degree of dispersion of the single fuel consumption rate of the plurality of diesel engines;
If the first relative range is monitored to exceed a preset first threshold, determining that the parallel operation consistency of the parallel operation unit is abnormal; the first threshold value represents the allowable fluctuation range of the single-engine oil consumption rate of the plurality of diesel engines when the vehicle is combined; the parallel operation unit comprises a plurality of diesel engines connected with each other in parallel operation.
According to the method, a plurality of single-machine fuel consumption rates corresponding to a plurality of diesel engines are determined according to single-machine power of the plurality of diesel engines connected in parallel and branch pipeline pressures of fuel pipeline branches corresponding to the plurality of diesel engines; determining a first relative margin according to the plurality of single fuel consumption rates; the first relative range characterizes the degree of dispersion of the single fuel consumption rate of the plurality of diesel engines; if the first relative range is monitored to exceed a preset first threshold value, determining that the parallel operation consistency of the parallel operation unit is abnormal; the first threshold value represents the allowable fluctuation range of single-unit oil consumption rates of a plurality of diesel engines during parallel operation; the parallel operation unit comprises a plurality of diesel engines connected in parallel. According to the method, the discrete degree of the single-unit fuel consumption rate can be determined based on the branch pipeline pressure at the branch of the fuel pipeline and the single-unit power of the parallel operation unit, whether the parallel operation consistency of the parallel operation unit is abnormal or not is monitored, the tourist of the parallel operation unit can be pre-warned in a test or in use, and the occurrence of the tourist of the parallel operation unit is reduced.
In one possible implementation, determining a plurality of individual fuel consumption rates corresponding to a plurality of diesel engines connected in parallel according to individual power of the plurality of diesel engines and branch pipeline pressures of respective fuel pipeline branches corresponding to the plurality of diesel engines includes:
determining the fuel flow of each fuel pipeline branch according to the branch pipeline pressure of each fuel pipeline branch corresponding to a plurality of diesel engines connected in parallel;
and determining the single-unit oil consumption rate of each diesel engine according to the fuel flow of each fuel pipeline branch and the single-unit power of each diesel engine.
According to the method, the pressure sensors are arranged at the branches of the fuel pipelines, the branch pipeline pressure of each fuel pipeline branch corresponding to a plurality of diesel engines connected in parallel is obtained, the fuel pipeline branches indirectly measure different branch oil quantities by utilizing the liquid flow pressure, and the fuel pipeline branches are processed based on oil quantity signals to determine the single-engine oil consumption rate. The method can determine the oil supply quantity of different fuel oil pipeline branches, further determine the single power of each diesel engine of the parallel operation unit, reduce the calculated quantity for determining the single power and improve the parallel operation monitoring efficiency of the diesel engines.
In one possible implementation manner, the determining the first relative range according to the plurality of stand-alone fuel consumption rates includes:
determining the maximum single-unit oil consumption rate, the minimum single-unit oil consumption rate and the average single-unit oil consumption rate corresponding to the plurality of diesel engines according to the plurality of single-unit oil consumption rates; the average single-unit oil consumption rate is an average value of the single-unit oil consumption rates;
and determining the relative extreme differences of the single-unit oil consumption rates according to the maximum single-unit oil consumption rate, the minimum single-unit oil consumption rate and the average single-unit oil consumption rate, so as to obtain the first relative extreme differences.
According to the method, the maximum single-unit oil consumption rate, the minimum single-unit oil consumption rate and the average single-unit oil consumption rate corresponding to a plurality of diesel engines are determined according to the plurality of single-unit oil consumption rates; the average single-unit oil consumption rate is the average value of the single-unit oil consumption rates; and determining the relative extreme differences of the single-unit oil consumption rates according to the maximum single-unit oil consumption rate, the minimum single-unit oil consumption rate and the average single-unit oil consumption rate, and obtaining a first relative extreme difference. The method is based on the maximum single-engine oil consumption rate, the minimum single-engine oil consumption rate and the average single-engine oil consumption rate corresponding to the plurality of diesel engines, determines the relative extremely poor of the plurality of single-engine oil consumption rates, can more accurately reflect the discrete degree of the single-engine oil consumption rates of the plurality of diesel engines, enhances the accuracy of monitoring the parallel operation of the diesel engines, and reduces the occurrence of traveling blocks of the parallel operation unit.
In one possible implementation manner, after the determining that the merging consistency of the merging unit is abnormal, the method further includes:
a first alarm instruction is sent out; the first alarm instruction is used for sending out a parallel operation abnormal prompt message.
After the abnormity of the parallel operation consistency of the parallel operation unit is determined, a first alarm instruction is sent; the first alarm instruction is used for sending out a parallel operation abnormal prompt message. The method comprises the steps of sending a first alarm instruction after the abnormality of the parallel operation consistency of the parallel operation unit is determined; the first alarm instruction is used for sending out abnormal prompt information of the parallel operation, so that early warning efficiency of the tourist car of the parallel operation unit in a test or in use can be improved, and the tourist car of the parallel operation unit is reduced.
In one possible implementation, the method further includes:
if the overall power of the parallel operation unit is monitored to be higher than a preset second threshold value, a second alarm instruction is sent out; the second threshold value is the maximum parallel operation power supported by the fuel oil pipeline of the calibrated parallel operation unit; the second alarm instruction is used for sending out prompt information of risk of traveling.
According to the method, if the overall power of the parallel operation unit is monitored to be higher than the preset second threshold value, a second alarm instruction is sent out; the second threshold value is the maximum parallel power supported by the fuel oil pipeline of the calibrated parallel unit; the second alarm instruction is used for sending out prompt information of risk of traveling. The method can continuously monitor the whole power of the parallel operation unit, and combines the maximum parallel operation power supported by the fuel oil pipeline of the calibrated parallel operation unit to realize the early warning of the traveling block of the parallel operation unit, thereby further reducing the traveling block of the parallel operation unit.
In one possible implementation, the method further includes:
determining a second relative limit of the fuel flow and a third relative limit of the single power according to the fuel flow of each fuel pipeline branch and the single power of each diesel engine;
if the second relative polar difference and the third relative polar difference are not detected to exceed a preset third threshold value and the parallel operation unit is in a traveling or stopping state, a third alarm instruction is sent; the third alarm instruction is used for sending out abnormal prompt information that the pipeline from the branch pipeline to the oil inlet of the diesel engine is constricted or blocked; the third threshold value characterizes the fuel flow rate of the fuel pipeline branch allowed during the parallel operation or the fluctuation range of the single machine power.
According to the method, the second relative extreme difference of the fuel flow and the third relative extreme difference of the single power are determined according to the fuel flow of each fuel pipeline branch and the single power of each diesel engine; if the second relative polar difference and the third relative polar difference are not detected to exceed a preset third threshold value and the parallel operation unit generates a traveling crane or stops, a third alarm instruction is sent; the third alarm instruction is used for sending out abnormal prompt information that the pipeline from the branch pipeline to the oil inlet of the diesel engine is constricted or blocked; the third threshold value characterizes the fluctuation range of the fuel flow rate or the single machine power of the fuel pipeline branch allowed during the parallel operation. According to the method, when the flow rates of all the branches are consistent, the power of each diesel engine is consistent, if a traveling block or a stop occurs, an alarm prompt is given to check whether a fuel oil pipeline branches to an oil inlet of the diesel engine to have diameter reduction or blockage, so that the traveling block of a parallel operation unit can be reduced, the abnormal operation of the pipeline can be prompted, and the workload of troubleshooting fault factors associated with the traveling block of the parallel operation unit is reduced.
In a second aspect, an embodiment of the present application provides a diesel engine parallel operation monitoring device, including:
the operation parameter module is used for determining a plurality of single-machine oil consumption rates corresponding to the plurality of diesel engines according to single-machine power of the plurality of diesel engines connected in parallel and branch pipeline pressure of each fuel pipeline branch corresponding to the plurality of diesel engines;
The data analysis module is used for determining a first relative extremely poor according to the plurality of single-machine oil consumption rates; the first relative range characterizes a degree of dispersion of the single fuel consumption rate of the plurality of diesel engines;
the abnormality judgment module is used for determining that the parallel operation consistency of the parallel operation unit is abnormal if the first relative range is monitored to exceed a preset first threshold value; the first threshold value represents the allowable fluctuation range of the single-engine oil consumption rate of the plurality of diesel engines when the vehicle is combined; the parallel operation unit comprises a plurality of diesel engines connected with each other in parallel operation.
In one possible implementation, the apparatus further includes:
the power monitoring module is used for sending a second alarm instruction if the power of the whole machine of the parallel operation unit is monitored to be higher than a preset second threshold value; the second threshold value is the maximum parallel operation power supported by the fuel oil pipeline of the calibrated parallel operation unit; the second alarm instruction is used for sending out prompt information of risk of traveling.
In one possible implementation manner, the operation parameter module is specifically configured to:
determining the fuel flow of each fuel pipeline branch according to the branch pipeline pressure of each fuel pipeline branch corresponding to a plurality of diesel engines connected in parallel;
And determining the single-unit oil consumption rate of each diesel engine according to the fuel flow of each fuel pipeline branch and the single-unit power of each diesel engine.
In one possible implementation manner, the data analysis module is specifically configured to:
determining the maximum single-unit oil consumption rate, the minimum single-unit oil consumption rate and the average single-unit oil consumption rate corresponding to the plurality of diesel engines according to the plurality of single-unit oil consumption rates; the average single-unit oil consumption rate is an average value of the single-unit oil consumption rates;
and determining the relative extreme differences of the single-unit oil consumption rates according to the maximum single-unit oil consumption rate, the minimum single-unit oil consumption rate and the average single-unit oil consumption rate, so as to obtain the first relative extreme differences.
In one possible implementation manner, the anomaly determination module is further configured to:
a first alarm instruction is sent out; the first alarm instruction is used for sending out a parallel operation abnormal prompt message.
In one possible implementation, the data analysis module is further configured to: determining a second relative limit of the fuel flow and a third relative limit of the single power according to the fuel flow of each fuel pipeline branch and the single power of each diesel engine;
The abnormality judgment module is further configured to: if the second relative polar difference and the third relative polar difference are not detected to exceed a preset third threshold value and the parallel operation unit is in a traveling or stopping state, a third alarm instruction is sent; the third alarm instruction is used for sending out abnormal prompt information that the pipeline from the branch pipeline to the oil inlet of the diesel engine is constricted or blocked; the third threshold value characterizes the fuel flow rate of the fuel pipeline branch allowed during the parallel operation or the fluctuation range of the single machine power.
In a third aspect, there is provided an electronic device comprising a processor and a memory, wherein the memory stores program code that, when executed by the processor, causes the processor to perform the steps of the diesel engine parallel operation monitoring method of any one of the above.
In a fourth aspect, a computer readable storage medium is provided, in which a computer program is stored, the computer program, when executed by a processor, implementing the diesel parallel operation monitoring method of any one of the above.
The technical effects caused by any implementation manner of the second aspect to the fourth aspect may be referred to the technical effects caused by the implementation manner of the first aspect, and are not described herein.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic flow chart of a diesel engine parallel operation monitoring method provided in an embodiment of the present application;
fig. 2 is a schematic structural diagram of a parallel operation unit according to an embodiment of the present application;
FIG. 3 is a schematic flow chart of another method for monitoring parallel operation of diesel engines according to an embodiment of the present application;
fig. 4 is a schematic flow chart of another diesel engine parallel operation monitoring method according to an embodiment of the present application;
fig. 5 is a schematic flow chart of another diesel engine parallel operation monitoring method according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of another diesel parallel operation monitoring device according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of another diesel parallel operation monitoring device according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the present application more apparent, the present application will be described in further detail below with reference to the accompanying drawings, wherein it is apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
Some of the terms in the embodiments of the present application are explained below to facilitate understanding by those skilled in the art.
(1) And (3) ECU: (Electronic Control Unit ): the ECU is also called an "engine electronic control unit", and is a controller that performs computation, processing, and judgment according to signals input from the sensors, and then outputs instructions to control the operation of the actuator.
(2) And (3) merging: the parallel operation is to drive the load by more than one engine through the reduction gear transmission.
(3) Traveling block: the cruise vehicle is a failure phenomenon caused by a sudden increase or decrease in engine speed due to a change in engine power during steady throttle opening or cruise travel. When the engine rotates in a low-speed or medium-speed range, the engine is operated in a regular change mode of negligence and speed, and the engine is called a tourist car. When the tourist car is serious, the tourist car is easy to flameout.
(4) A rack: the test equipment for calibrating the engine is used for calibrating various performance parameters of the engine, including engine speed, engine torque, fuel injection quantity, emission and the like.
(5) Fuel consumption rate: which may also be referred to as fuel consumption, refers to the amount of fuel that is effectively consumed per hour, typically expressed as fuel consumption per kilowatt-hour. The fuel consumption rate is typically in grams per kilowatt hour.
In order to reduce the occurrence of traveling cranes of a parallel operation unit and reduce the power consumption of a fan, the embodiment of the application provides a diesel engine parallel operation monitoring method, a diesel engine parallel operation monitoring device, electronic equipment and a medium. In order to better understand the technical solution provided by the embodiments of the present application, a simple description is made here of the basic principle of the solution.
It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be implemented in sequences other than those illustrated or otherwise described herein. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present application as detailed in the accompanying claims.
The following describes the technical scheme provided by the embodiment of the application with reference to the accompanying drawings.
With the more complicated application working conditions of diesel engines, a plurality of diesel engines are commonly used for parallel operation, and the problem that the oil supply quantity of a high-power pipeline is insufficient easily occurs, so that the parallel operation power exceeds a certain value, and the normal use of a unit is seriously affected.
For middle-low end diesel engines, especially mechanical pump diesel engines, a monitoring means for parallel operation of the diesel engines is often lacking, traveling vehicles are easy to cause, and fault reasons are difficult to remove.
In view of this, embodiments of the present application provide a method, apparatus, electronic device, and medium for monitoring parallel operation of diesel engines, which determine a plurality of individual fuel consumption rates corresponding to a plurality of diesel engines by determining individual power of the plurality of diesel engines connected in parallel and branch line pressures of respective fuel line branches corresponding to the plurality of diesel engines; determining a first relative margin according to the plurality of single fuel consumption rates; the first relative range characterizes the degree of dispersion of the single fuel consumption rate of the plurality of diesel engines; if the first relative range is monitored to exceed a preset first threshold value, determining that the parallel operation consistency of the parallel operation unit is abnormal; the first threshold value represents the allowable fluctuation range of single-unit oil consumption rates of a plurality of diesel engines during parallel operation; the parallel operation unit comprises a plurality of diesel engines connected in parallel. According to the method, the discrete degree of the single-unit fuel consumption rate can be determined based on the branch pipeline pressure at the branch of the fuel pipeline and the single-unit power of the parallel operation unit, whether the parallel operation consistency of the parallel operation unit is abnormal or not is monitored, the tourist of the parallel operation unit can be pre-warned in a test or in use, and the occurrence of the tourist of the parallel operation unit is reduced.
The preferred embodiments of the present application will be described below with reference to the accompanying drawings of the specification, it being understood that the preferred embodiments described herein are for illustration and explanation only, and are not intended to limit the present application, and embodiments of the present application and features of the embodiments may be combined with each other without conflict.
The diesel engine parallel operation monitoring method provided by the embodiment of the application is further explained below.
As shown in fig. 1, the method comprises the following steps:
step S101, determining a plurality of single-unit fuel consumption rates corresponding to the plurality of diesel engines according to single-unit power of the plurality of diesel engines connected in parallel and branch pipeline pressures of fuel pipeline branches corresponding to the plurality of diesel engines.
Specifically, the branch line pressure of each fuel line branch corresponding to the plurality of diesel engines may be obtained by a pressure sensor added to each fuel line branch at the main line branch, as shown in fig. 2, and the parallel operation unit 200 includes 4 diesel engines connected in parallel: the system comprises a 1# diesel engine, a 2# diesel engine, a 3# diesel engine and a 4# diesel engine, wherein the branch pipeline pressures of the corresponding fuel pipelines of the 4 diesel engines can be P1, P2, P3 and P4 respectively, and monitoring data comprising the branch pipeline pressures can be collected to an upper computer for collecting and analyzing through the upper computer.
In one possible implementation manner, according to the single power of the plurality of diesel engines connected in parallel and the branch pipe pressure of each fuel pipe branch corresponding to the plurality of diesel engines, the plurality of single fuel consumption rates corresponding to the plurality of diesel engines are determined, as shown in fig. 3, by the following steps:
step S301, determining the fuel flow of each fuel pipeline branch according to the branch pipeline pressure of each fuel pipeline branch corresponding to a plurality of diesel engines connected in parallel.
Specifically, the fuel flow rate may be determined by the following formula:
Q＝P*S*C
wherein Q represents the pipe flow;
p represents the fuel pressure;
c represents a pipeline coefficient, and is related to pipeline materials and fuel viscosity;
s represents the cross-sectional area of the pipe.
Step S302, according to the fuel flow of each fuel pipeline branch and the single-machine power of each diesel engine, the single-machine fuel consumption rate of each diesel engine is determined.
In the specific implementation, the fuel consumption quality of each fuel pipeline branch in unit time can be determined according to the fuel flow of each fuel pipeline branch, and the single-unit fuel consumption rate of each diesel engine can be determined according to the fuel consumption quality of each fuel pipeline branch in unit time and the single-unit power of each diesel engine.
Step S102, determining a first relative extreme difference according to a plurality of single-machine fuel consumption rates.
Wherein the first relative range characterizes the degree of dispersion of the individual fuel consumption rates of the plurality of diesel engines.
In one possible implementation, the first relative margin is determined according to a plurality of stand-alone fuel consumption rates, as shown in fig. 4, by the steps of:
step S401, determining the maximum single fuel consumption rate, the minimum single fuel consumption rate and the average single fuel consumption rate corresponding to the plurality of diesel engines according to the plurality of single fuel consumption rates.
Wherein the average single fuel consumption rate is an average value of the single fuel consumption rates.
For example, assume that a total of n diesel engines are running in parallel, M1, M2, …, mn; the fuel flow of the n fuel pipeline branches is measured as follows: q1, Q2, …, qn; dividing the fuel flow by the corresponding single machine power to measure the corresponding n single machine fuel consumption rates: q1, q2, …, qn.
For the n single fuel consumption rates, the maximum single fuel consumption rate q can be determined max Minimum single unit fuel consumption rate q min Average single unit fuel consumption rate q Mean value of 。
Step S402, determining the relative extreme differences of the single-unit oil consumption rates according to the maximum single-unit oil consumption rate, the minimum single-unit oil consumption rate and the average single-unit oil consumption rate, and obtaining a first relative extreme difference.
Specifically, for n individual fuel consumption rates, if the maximum individual fuel consumption rate q is determined max Minimum single unit fuel consumption rate q min Average single unit fuel consumption rate q Mean value of The relative range of the plurality of individual fuel consumption rates may be determined by the following equation:
φ n ＝(q max -q min )/q mean value of *100％。
The relative extreme differences phi determined for the above-mentioned n individual fuel consumption rates (q 1, q2, …, qn) n As a determination of the first relative margin phi from the n individual fuel consumption rates (q 1, q2, …, qn) fir 。
And S103, if the first relative range is monitored to exceed a preset first threshold, determining that the parallel operation consistency of the parallel operation unit is abnormal.
The first threshold represents the allowable fluctuation range of single-unit oil consumption rates of a plurality of diesel engines during parallel operation; the parallel operation unit comprises a plurality of diesel engines connected in parallel.
In particular implementations, the first threshold may be 2.5% or 3%.
Illustratively, assume a preset firstThe threshold value is 2.5%, if the relative deviation rate phi of the determined n single-machine fuel consumption rates (q 1, q2, …, qn) n Greater than 2.5%, the first relative difference phi fir And (3) determining that the parallel operation consistency of the parallel operation unit is abnormal when the parallel operation consistency is greater than 2.5%.
In one possible implementation manner, after determining that the parallel operation consistency of the parallel operation unit is abnormal, a first alarm instruction is sent; the first alarm instruction is used for sending out parallel operation abnormal prompt information.
If the parallel operation consistency of the parallel operation unit is determined to be abnormal, an instrument alarms, the fact that the deviation of the parallel operation fuel consumption rate is large is indicated, and on-site personnel are prompted to check the problem of the diesel engine is achieved.
If phi fir And if the speed is lower than 2.5%, the parallel operation consistency of the parallel operation unit is good.
In one possible implementation manner, the process of diesel engine parallel operation monitoring further comprises: and if the whole power of the parallel operation unit is higher than a preset second threshold value, a second alarm instruction is sent out.
The second threshold value is the maximum parallel power supported by the fuel oil pipeline of the calibrated parallel unit; the second alarm instruction is used for sending out prompt information of risk of traveling.
In specific implementation, the second threshold value can be calibrated through bench test of the parallel operation unit. After the parallel operation, the parallel operation unit operates to a certain power, the oil quantity of a certain fuel pipeline branch changes, and the diesel engine of the parallel operation unit generates the traveling carriage, so that the traveling carriage of the parallel operation unit can be judged due to the fact that the fuel flow of the fuel pipeline branch is too low. The maximum power at this time can be used as the maximum parallel power supported by the fuel lines of the parallel operation unit. In the embodiment of the application, the maximum parallel operation power of the parallel operation unit cannot be exceeded every time, so that safety is improved.
It will be appreciated that in some embodiments, the second threshold may also be obtained by multiplying the maximum parallel power supported by the fuel lines of the calibrated parallel units by a safety factor. Wherein, the value of the safety coefficient is between 0 and 1.
In the embodiment of the present application, the second threshold and/or the safety coefficient may be specifically set according to actual needs, and stored in the ECU of the parallel operation unit, for example, in the upper computer in fig. 2.
In one possible implementation, as shown in fig. 5, the process of diesel engine parallel operation monitoring further includes:
step S501, determining a second relative extreme difference of the fuel flow and a third relative extreme difference of the single power according to the fuel flow of each fuel pipeline branch and the single power of each diesel engine.
In specific implementation, the process of determining the second relative limit of the fuel flow and the third relative limit of the single machine power is similar to the process of determining the first relative limit according to the multiple single machine fuel consumption rates as shown in fig. 4, and the details of the process are not repeated.
Step S502, if the second relative polar difference and the third relative polar difference are not detected to exceed a preset third threshold value, and the parallel operation unit generates a traveling or stopping, a third alarm instruction is sent.
The third alarm instruction is used for sending out abnormal prompt information that a pipeline from a branch pipeline to an oil inlet of the diesel engine is constricted or blocked; the third threshold value characterizes the fluctuation range of the fuel flow rate or the single machine power of the fuel pipeline branch allowed during the parallel operation.
In particular, the third threshold may be the same as or different from the first threshold.
In some embodiments, the third threshold may also be 2.5% or 3%; in other embodiments, the third threshold may also be set to other numbers than 2.5% and 3% with a value between 2% and 5%.
In the embodiment of the application, when the flow of each branch pipeline is consistent, and the single power of each diesel engine is consistent, if a traveling car or a stop occurs, an alarm is given to prompt and check whether the diameter of an oil inlet of the branch pipeline to the diesel engine is reduced or blocked. The branch pipeline refers to a fuel pipeline branch of the parallel operation unit.
The flow of each branch pipeline is consistent, and the single power of each diesel engine is consistent, and the judgment can be carried out by judging that the second relative polar difference and the third relative polar difference do not exceed a preset third threshold value.
According to the diesel engine parallel operation monitoring method, a plurality of single engine oil consumption rates corresponding to a plurality of diesel engines are determined according to single engine power of the plurality of diesel engines connected in parallel and branch pipeline pressures of fuel pipeline branches corresponding to the plurality of diesel engines; determining a first relative margin according to the plurality of single fuel consumption rates; the first relative range characterizes the degree of dispersion of the single fuel consumption rate of the plurality of diesel engines; if the first relative range is monitored to exceed a preset first threshold value, determining that the parallel operation consistency of the parallel operation unit is abnormal; the first threshold value represents the allowable fluctuation range of single-unit oil consumption rates of a plurality of diesel engines during parallel operation; the parallel operation unit comprises a plurality of diesel engines connected in parallel. According to the method, the discrete degree of the single-unit fuel consumption rate can be determined based on the branch pipeline pressure at the branch of the fuel pipeline and the single-unit power of the parallel operation unit, whether the parallel operation consistency of the parallel operation unit is abnormal or not is monitored, the tourist of the parallel operation unit can be pre-warned in a test or in use, and the occurrence of the tourist of the parallel operation unit is reduced.
Based on the same inventive concept, the embodiment of the application also provides a diesel engine parallel operation monitoring device. As shown in fig. 6, the apparatus includes:
an operation parameter module 601, configured to determine a plurality of single-unit fuel consumption rates corresponding to a plurality of diesel engines according to single-unit powers of the plurality of diesel engines connected in parallel and branch pipeline pressures of fuel pipeline branches corresponding to the plurality of diesel engines;
the data analysis module 602 is configured to determine a first relative range according to a plurality of single fuel consumption rates; the first relative range characterizes the degree of dispersion of the single fuel consumption rate of the plurality of diesel engines;
the abnormality determination module 603 is configured to determine that the parallel operation consistency of the parallel operation unit is abnormal if the first relative range is monitored to exceed a preset first threshold; the first threshold value represents the allowable fluctuation range of single-unit oil consumption rates of a plurality of diesel engines during parallel operation; the parallel operation unit comprises a plurality of diesel engines connected in parallel.
In one possible implementation, as shown in fig. 7, the method further includes:
the power monitoring module 701 is configured to send out a second alarm instruction if it is detected that the power of the whole machine of the parallel operation unit is higher than a preset second threshold; the second threshold value is the maximum parallel power supported by the fuel oil pipeline of the calibrated parallel unit; the second alarm instruction is used for sending out prompt information of risk of traveling.
In one possible implementation, the operation parameter module 601 is specifically configured to:
determining the fuel flow of each fuel pipeline branch according to the branch pipeline pressure of each fuel pipeline branch corresponding to a plurality of diesel engines connected in parallel;
and determining the single-unit oil consumption rate of each diesel engine according to the fuel flow of each fuel pipeline branch and the single-unit power of each diesel engine.
In one possible implementation, the data analysis module 602 is specifically configured to:
according to the single-unit oil consumption rates, determining the maximum single-unit oil consumption rate, the minimum single-unit oil consumption rate and the average single-unit oil consumption rate corresponding to the diesel engines; the average single-unit oil consumption rate is the average value of the single-unit oil consumption rates;
and determining the relative extreme differences of the single-unit oil consumption rates according to the maximum single-unit oil consumption rate, the minimum single-unit oil consumption rate and the average single-unit oil consumption rate, and obtaining a first relative extreme difference.
In one possible implementation, the anomaly determination module 603 is further configured to:
a first alarm instruction is sent out; the first alarm instruction is used for sending out parallel operation abnormal prompt information.
In one possible implementation, the data analysis module 602 is further configured to: determining a second relative limit of the fuel flow and a third relative limit of the single power according to the fuel flow of each fuel pipeline branch and the single power of each diesel engine;
The anomaly determination module 603 is further configured to: if the second relative polar difference and the third relative polar difference are not detected to exceed a preset third threshold value and the parallel operation unit generates a traveling crane or stops, a third alarm instruction is sent; the third alarm instruction is used for sending out abnormal prompt information that the pipeline from the branch pipeline to the oil inlet of the diesel engine is constricted or blocked; the third threshold value characterizes the fluctuation range of the fuel flow rate or the single machine power of the fuel pipeline branch allowed during the parallel operation.
Based on the same technical concept, the embodiment of the present application further provides an electronic device, and referring to fig. 8, the electronic device is configured to implement the methods described in the above embodiments of the methods, for example, implement the method shown in fig. 1, where the electronic device may include a memory 801, a processor 802, an input unit 803, and a display panel 804.
A memory 801 for storing a computer program for execution by the processor 802. The memory 801 may mainly include a storage program area that may store an operating system, application programs required for at least one function, and the like, and a storage data area; the storage data area may store data created according to the use of the electronic device, etc. The processor 802 may be a central processing unit (central processing unit, CPU), or a digital processing unit, etc. An input unit 803 may be used to obtain user instructions entered by a user. The display panel 804 is configured to display information input by a user or information provided to the user, where in this embodiment of the present application, the display panel 804 is mainly configured to display interfaces of applications in a terminal device and control entities displayed in the display interfaces. Alternatively, the display panel 804 may be configured in the form of a liquid crystal display (liquid crystal display, LCD) or an OLED (organic light-emitting diode) or the like.
The specific connection medium between the above-described memory 801, processor 802, input unit 803, and display panel 804 is not limited in the embodiments of the present application. In the embodiment of the present application, the memory 801, the processor 802, the input unit 803, and the display panel 804 are connected through the bus 805 in fig. 8, the bus 805 is shown by a thick line in fig. 8, and the connection manner between other components is only schematically illustrated, but not limited thereto. The bus 805 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown in fig. 8, but not only one bus or one type of bus.
The memory 801 may be a volatile memory (RAM) such as a random-access memory (RAM); the memory 801 may also be a nonvolatile memory (non-volatile memory), such as a read-only memory, a flash memory (flash memory), a Hard Disk Drive (HDD) or a Solid State Drive (SSD), or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited thereto. The memory 801 may be a combination of the above memories.
A processor 802 for invoking a computer program stored in memory 801 to perform the embodiment shown in fig. 1.
The embodiment of the application also provides a computer readable storage medium which stores computer executable instructions required to be executed by the processor, and the computer readable storage medium contains a program for executing the processor.
In some possible embodiments, aspects of a diesel engine parallel operation monitoring method provided in the present application may also be implemented in the form of a program product, which includes program code for causing a terminal device to perform the steps in a diesel engine parallel operation monitoring method according to various exemplary embodiments of the present application described in the present specification, when the program product is run on the terminal device. For example, an electronic device may perform the embodiment shown in FIG. 1.
The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium would include the following: an electrical connection having one or more wires, a portable disk, a hard disk, random Access Memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
Embodiments of the present application provide a diesel engine parallel operation monitoring program product that may employ a portable compact disc read only memory (CD-ROM) and include program code and may be run on a computing device. However, the program product of the present application is not limited thereto, and in this document, a readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The readable signal medium may include a data signal propagated in baseband or as part of a carrier wave with readable program code embodied therein. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A readable signal medium may also be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Program code for carrying out operations of the present application may be written in any combination of one or more programming languages, including an entity oriented programming language such as Java, C++ or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device, partly on a remote computing device, or entirely on the remote computing device or server. In the case of remote computing devices, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device (e.g., connected via the Internet using an Internet service provider).
It should be noted that although several units or sub-units of the apparatus are mentioned in the above detailed description, such a division is merely exemplary and not mandatory. Indeed, the features and functions of two or more of the elements described above may be embodied in one element in accordance with embodiments of the present application. Conversely, the features and functions of one unit described above may be further divided into a plurality of units to be embodied.
Furthermore, although the operations of the methods of the present application are depicted in the drawings in a particular order, this is not required to or suggested that these operations must be performed in this particular order or that all of the illustrated operations must be performed in order to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step to perform, and/or one step decomposed into multiple steps to perform.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable file processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable file processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable file processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable file processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.
Claims (9)
1. A method for monitoring parallel operation of diesel engines, the method comprising:
determining a plurality of single-engine oil consumption rates corresponding to a plurality of diesel engines according to single-engine power of the diesel engines connected in parallel and branch pipeline pressures of fuel pipeline branches corresponding to the diesel engines; the branch pipeline pressure is obtained by a pressure sensor added to the fuel pipeline branch;
determining a first relative margin according to the plurality of single-machine fuel consumption rates; the first relative range characterizes a degree of dispersion of the single fuel consumption rate of the plurality of diesel engines;
if the first relative range is monitored to exceed a preset first threshold, determining that the parallel operation consistency of the parallel operation unit is abnormal; the first threshold value represents the allowable fluctuation range of the single-engine oil consumption rate of the plurality of diesel engines when the vehicle is combined; the parallel operation unit comprises a plurality of diesel engines connected with the parallel operation unit;
The determining a first relative range according to the plurality of single-machine fuel consumption rates includes:
determining the maximum single-unit oil consumption rate, the minimum single-unit oil consumption rate and the average single-unit oil consumption rate corresponding to the plurality of diesel engines according to the plurality of single-unit oil consumption rates; the average single-unit oil consumption rate is an average value of the single-unit oil consumption rates;
and determining the relative extreme differences of the single-unit oil consumption rates according to the maximum single-unit oil consumption rate, the minimum single-unit oil consumption rate and the average single-unit oil consumption rate, so as to obtain the first relative extreme differences.
2. The method of claim 1, wherein determining a plurality of individual fuel consumption rates corresponding to the plurality of diesel engines based on individual power of the plurality of diesel engines connected in parallel and branch line pressures of respective fuel line branches corresponding to the plurality of diesel engines, comprises:
determining the fuel flow of each fuel pipeline branch according to the branch pipeline pressure of each fuel pipeline branch corresponding to a plurality of diesel engines connected in parallel;
and determining the single-unit oil consumption rate of each diesel engine according to the fuel flow of each fuel pipeline branch and the single-unit power of each diesel engine.
3. The method of claim 1, wherein after said determining that the merging consistencies of the merging set are abnormal, the method further comprises:
a first alarm instruction is sent out; the first alarm instruction is used for sending out a parallel operation abnormal prompt message.
4. The method according to claim 1, wherein the method further comprises:
if the overall power of the parallel operation unit is monitored to be higher than a preset second threshold value, a second alarm instruction is sent out; the second threshold value is the maximum parallel operation power supported by the fuel oil pipeline of the calibrated parallel operation unit; the second alarm instruction is used for sending out prompt information of risk of traveling.
5. The method according to claim 2, wherein the method further comprises:
determining a second relative limit of the fuel flow and a third relative limit of the single power according to the fuel flow of each fuel pipeline branch and the single power of each diesel engine;
if the second relative polar difference and the third relative polar difference are not detected to exceed a preset third threshold value and the parallel operation unit is in a traveling or stopping state, a third alarm instruction is sent; the third alarm instruction is used for sending out abnormal prompt information that the pipeline from the branch pipeline to the oil inlet of the diesel engine is constricted or blocked; the third threshold value characterizes the fuel flow rate of the fuel pipeline branch allowed during the parallel operation or the fluctuation range of the single machine power.
6. A diesel engine parallel operation monitoring device, characterized in that the device comprises:
the operation parameter module is used for determining a plurality of single-machine oil consumption rates corresponding to the plurality of diesel engines according to single-machine power of the plurality of diesel engines connected in parallel and branch pipeline pressure of each fuel pipeline branch corresponding to the plurality of diesel engines; the branch pipeline pressure is obtained by a pressure sensor added to the fuel pipeline branch;
the data analysis module is used for determining a first relative extremely poor according to the plurality of single-machine oil consumption rates; the first relative range characterizes a degree of dispersion of the single fuel consumption rate of the plurality of diesel engines;
the abnormality judgment module is used for determining that the parallel operation consistency of the parallel operation unit is abnormal if the first relative range is monitored to exceed a preset first threshold value; the first threshold value represents the allowable fluctuation range of the single-engine oil consumption rate of the plurality of diesel engines when the vehicle is combined; the parallel operation unit comprises a plurality of diesel engines connected with the parallel operation unit;
the data analysis module is specifically configured to:
determining the maximum single-unit oil consumption rate, the minimum single-unit oil consumption rate and the average single-unit oil consumption rate corresponding to the plurality of diesel engines according to the plurality of single-unit oil consumption rates; the average single-unit oil consumption rate is an average value of the single-unit oil consumption rates; and determining the relative extreme differences of the single-unit oil consumption rates according to the maximum single-unit oil consumption rate, the minimum single-unit oil consumption rate and the average single-unit oil consumption rate, so as to obtain the first relative extreme differences.
7. The apparatus of claim 6, wherein the apparatus further comprises:
the power monitoring module is used for sending a second alarm instruction if the power of the whole machine of the parallel operation unit is monitored to be higher than a preset second threshold value; the second threshold value is the maximum parallel operation power supported by the fuel oil pipeline of the calibrated parallel operation unit; the second alarm instruction is used for sending out prompt information of risk of traveling.
8. An electronic device comprising a processor and a memory, wherein the memory stores program code that, when executed by the processor, causes the processor to perform the steps of the method of any of claims 1-5.
9. A computer-readable storage medium, wherein a computer program is stored in the computer-readable storage medium, characterized in that: the computer program, when executed by a processor, implements the method of any of claims 1-5.
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