CN115839282A - Fuel system construction method and device based on generator set - Google Patents
Fuel system construction method and device based on generator set Download PDFInfo
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- 239000000446 fuel Substances 0.000 title claims abstract description 379
- 238000010276 construction Methods 0.000 title claims abstract description 76
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- 238000012384 transportation and delivery Methods 0.000 claims abstract description 35
- 238000002485 combustion reaction Methods 0.000 claims abstract description 27
- 239000003921 oil Substances 0.000 claims description 385
- 239000000295 fuel oil Substances 0.000 claims description 142
- 239000000110 cooling liquid Substances 0.000 claims description 33
- 238000004891 communication Methods 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 22
- 239000006096 absorbing agent Substances 0.000 claims description 21
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- 239000002826 coolant Substances 0.000 claims 2
- 238000003860 storage Methods 0.000 description 15
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Abstract
The invention relates to the technical field of fuel control of a generator set, in particular to a fuel system construction method and a fuel system construction device based on the generator set, which comprise the following steps: receiving a fuel system construction instruction, and starting a fuel distribution system, wherein the fuel distribution system comprises a fuel pump device and an oil pipeline device, the oil pipeline device consists of oil pipeline nodes, the wall thickness and the wall heat conductivity of each oil pipeline node are obtained according to a pipeline delivery specification table, the heat exchange coefficients of fuel in a pipe and each oil pipeline node are sequentially calculated, the total heat exchange coefficient of the oil pipeline device is obtained, the total fuel flow of the oil pipeline device is converted, the total fuel flow is divided, the fuel split flow of each oil pipeline node is obtained, the fuel flow distribution proportion of the oil pipeline device is calculated, an oil tank switch is opened, each fuel split flow is sequentially driven to a combustion chamber of a generator set, and the fuel system construction of the generator set is completed. The invention can realize the optimized fuel supply to the generator set.
Description
Technical Field
The invention relates to the technical field of fuel control of a generator set, in particular to a fuel system construction method and device based on the generator set, electronic equipment and a computer readable storage medium.
Background
The generator set is a complete set of mechanical equipment which converts energy generated by water flow, air flow or fuel oil combustion into mechanical energy and then converts the mechanical energy into electric energy. The fuel system is mechanical equipment which drives the generator set to work by utilizing heat energy generated by fuel combustion according to the requirement of the running condition of the generator set.
Because the fuel system determines the working state of the generator set, how to scientifically construct the fuel system is of great significance. The traditional fuel oil system construction method based on the generator set is mainly characterized in that the fuel oil amount is estimated according to the past work experience, then the corresponding fuel oil amount is directly extracted from an oil tank and is combusted to generate power to drive the generator set, and the fuel oil supply is stopped after the generator set reaches the expected work state, so that the fuel oil system construction based on the generator set is completed.
Although the traditional fuel system construction method based on the generator set is simple to operate, the situation that the estimated fuel quantity is not accurate enough is not considered, and meanwhile, the split flow of an oil pipeline device is not reasonably distributed, so that the waste phenomenon of excessive fuel quantity or the problem of insufficient power caused by too little fuel is caused, and the optimal fuel supply of the generator set cannot be realized.
Disclosure of Invention
The invention provides a fuel system construction method and device based on a generator set and a computer readable storage medium, and mainly aims to realize the optimized fuel supply for the generator set.
In order to achieve the purpose, the invention provides a fuel system construction method based on a generator set, which comprises the following steps:
receiving a fuel system construction instruction, and starting a fuel distribution system according to the fuel system construction instruction, wherein the fuel distribution system comprises a fuel pump device and an oil pipeline device, and fuel is connected with the fuel pump device through the oil pipeline device, and the oil pipeline device is connected with the fuel pump device through the oil pipeline device
Each oil pipeline node;
driving fuel oil to an oil pipeline device by using the fuel pump device to obtain fuel oil in a pipe;
determining a generator set, and obtaining the wall thickness and the wall thermal conductivity of each oil pipeline node according to a pipeline delivery specification table of the oil pipeline device;
when the pipe wall thickness and the pipe wall thermal conductivity of each oil pipeline node are successfully obtained, sequentially calculating the heat exchange coefficients of the fuel oil in the pipe and each oil pipeline node to obtain the total heat exchange coefficient of the oil pipeline device;
converting the total fuel flow of the oil pipeline device according to the total heat exchange coefficient of the oil pipeline device;
dividing the total fuel flow of the oil pipeline device according to the pipeline delivery specification table to obtain the fuel flow split of each oil pipeline node;
calculating the fuel oil quantity distribution proportion of the oil pipeline device according to each fuel oil split flow;
and after the fuel oil quantity distribution proportion calculation is successfully completed, opening an oil tank switch of the fuel oil distribution system, and sequentially driving each fuel oil flow division quantity to a combustion chamber of the generator set through a valve where the oil tank switch is located to complete the construction of the fuel oil system of the generator set.
Optionally, the driving the fuel to the oil pipeline device by using the fuel pump device to obtain the fuel in the pipe includes:
starting the fuel pump device, wherein the fuel pump device consists of a heat absorber, a radiator and a pump unit, the heat absorber, the radiator and the pump unit are connected by communicating pipes, and cooling liquid is stored in the communicating pipes;
absorbing fuel from a fuel tank using the pump unit, wherein the pump unit is driven by a pump engine and measures the temperature of the pump unit when the pump unit absorbs fuel;
when the temperature of the pump unit is greater than or equal to a preset first temperature threshold value, calculating the calorific value generated by the pump unit in the fuel oil absorption process;
absorbing the heat value by using the heat absorber, and conducting the absorbed heat value to the radiator through the cooling liquid in the communication pipe until the temperature of the pump unit is less than a preset first temperature threshold value, and stopping the heat absorber;
until the pump unit drives all the required fuel oil to the oil pipeline device, and the fuel oil in the pipe is obtained.
Optionally, the calculating the calorific value generated by the pump unit in the fuel oil absorption process includes:
the calorific value generated by the pump unit in the process of absorbing the fuel oil is calculated by the following formula:
wherein ,
indicating that the pump unit is absorbingThe calorific value produced during the fuel combustion process, g represents the fuel consumption of the internal combustion engine of the pump unit during the operation of the pump unit, n represents the operating power of the internal combustion engine, and>
which indicates the temperature difference between the pump unit when it is not started and the current time, and H indicates the lower heating value per unit time generated by the fuel used to drive the pump unit in operation during the combustion process.
Optionally, the absorbing the heat value by the heat absorber and conducting the absorbed heat value to the radiator through the cooling liquid in the communication pipe includes:
opening a switch of the communicating pipe, transferring the absorbed heat value to the cooling liquid through the communicating pipe by using the heat absorber, and measuring the temperature of the cooling liquid when the temperature of the cooling liquid rises;
when the temperature is greater than or equal to a preset second temperature threshold value, setting the flow speed V of the cooling liquid in the communication pipe;
calculating to obtain a heat dissipation coefficient a of the communicating pipe pair under the environment according to the flow velocity V;
after the heat dissipation coefficient a of the communicating pipe under the environment is successfully calculated, the loss heat value of the communicating pipe when the heat is conducted to the radiator is calculated by the following formula:
wherein ,
represents the lost heat value when the communicating pipe conducts heat to the radiator and is used for storing and storing the heat value>
Indicates the maximum temperature at which the temperature of the cooling liquid rises>
Represents the lowest temperature of the environment of the communicating pipe>
Denotes the diameter of the communication pipe, l denotes the length of the communication pipe;
and according to the heat loss value, calculating a final heat value conducted to the radiator by the cooling liquid by using the following formula:
and recording the final heat value, and completing the driving of the heat absorber to transmit the absorbed heat value to the radiator through the cooling liquid in the communication pipe.
Optionally, the sequentially calculating the heat transfer coefficients of the fuel oil in the pipe and each oil pipeline node to obtain the total heat transfer coefficient of the oil pipeline device includes:
determining the inner diameter and the outer diameter of the oil pipe of each oil pipeline node according to the pipeline delivery specification table;
respectively calculating the surface area of the inner wall and the surface area of the outer wall of each oil pipeline node according to the inner diameter and the outer diameter of the oil pipe;
starting the oil pipeline device, measuring the flow speed of the fuel oil in the pipe in the oil pipeline device, and calculating the heat exchange coefficient between the fuel oil in the pipe and the inner wall of the pipe according to the flow speed of the fuel oil in the pipe in the oil pipeline device;
after the heat exchange coefficients of the fuel oil in the pipe and the inner wall of the pipe are successfully calculated, the heat exchange coefficients of the fuel oil in the pipe and each oil pipeline node are sequentially calculated according to the surface area of the inner wall of the pipe and the surface area of the outer wall of the pipe and by combining the following formula:
wherein ,
represents the heat exchange coefficient of the fuel in the pipe and each oil pipeline node>
In-pipe representation of each oil line nodeWall surface area,. Sup.>
Represents the pipe outer wall surface area of each oil pipe node, and>
represents the heat exchange coefficient between the fuel in the pipe and the inner wall of the pipe>
Represents the heat transfer coefficient of the outer wall of the tube and the environment outside the tube, and>
represents the wall thickness of the tube, is greater than or equal to>
Represents the thermal conductivity of the tube wall;
and obtaining the total heat exchange coefficient of the oil pipeline device according to the fuel oil in the pipe and the heat exchange coefficient of each oil pipeline node.
Optionally, the determining a flow velocity of the fuel in the pipe in the oil pipeline device, and calculating a heat exchange coefficient between the fuel in the pipe and an inner wall of the pipe according to the flow velocity of the fuel in the pipe in the oil pipeline device includes:
determining an oil pipeline device, and connecting a flow meter in the oil pipeline device;
selecting a section measuring point from the oil pipeline device, and determining the inner diameter of the section measuring point according to a pipeline delivery specification table;
starting the flow meter, and measuring the fuel flow of the fuel in the pipe passing through the section measuring point;
after the fuel flow measurement of the fuel in the pipe passing through the section measurement point is successfully completed, the flow speed of the fuel in the pipe in the oil pipeline device is calculated according to the inner diameter of the section measurement point by using the following formula:
wherein ,
indicates the flow speed of the fuel in the pipe in the oil pipe device>
Indicating the fuel flow in the pipe through a determined point of the cross-section>
Inner diameters of cross-sectional measurement points;
calculating the heat exchange coefficient between the fuel oil in the pipe and the inner wall of the pipe according to the flowing speed of the fuel oil in the pipe in the oil pipeline device:
wherein ,
represents the heat transfer coefficient between the fuel in the tube and the inner wall of the tube>
Represents the oil pipe internal diameter of each oil pipe node, and>
represents the specific heat capacity of the fuel in the pipe, p represents the density of the fuel in the pipe, and w represents the viscosity of the fuel in the pipe.
Optionally, the obtaining a total heat exchange coefficient of the oil pipeline device according to the fuel oil in the pipe and the heat exchange coefficient of each oil pipeline node includes:
and calculating the total heat exchange coefficient of the oil pipeline device by using the following formula:
wherein ,
represents the total heat transfer coefficient of the oil line device>
Represents the heat exchange coefficient between the fuel in the pipe and the x-th oil pipeline node>
Represents the tube inner wall surface area of the x first oil line node>
Representing the tube outer wall surface area of the x-th oil line node.
Optionally, the converting the total flow of fuel oil of the oil pipeline device according to the total heat exchange coefficient of the oil pipeline device includes:
the total fuel flow of the oil pipeline device is calculated by the following formula:
wherein ,
indicates the total fuel flow of the oil line device>
Represents the total heat exchange coefficient of the oil pipeline device>
Indicates the calorific value of the fuel and is selected>
Represents the tube inner wall surface area of the xth oil line node, based on the total volume of the fluid>
Representing the difference between the maximum temperature of the fuel in the oil line set and the minimum temperature of the environment in which the oil line set is located.
Optionally, the dividing the total fuel flow of the oil pipeline device according to the pipeline delivery specification table to obtain the fuel flow split of each oil pipeline node includes:
obtaining the pipeline delivery specification table to obtain the oil pipe inner diameter of each oil pipe node of the oil pipe deviceAnd the length of the oil pipe, wherein the inner diameter of the oil pipe of the x-th oil pipeline node is
The length of the oil pipe is->
；
Calculating the fuel oil capacity of each oil pipeline node according to the inner diameter and the length of the oil pipe of each oil pipeline node, wherein
Fuel oil capacity of each oil pipeline node is->
；
Sequentially marking the fuel capacity of each oil pipeline node as
、/>
、/>
、……、/>
The fuel capacity ratio of each oil pipeline node can be obtained as->
：/>
：/>
：……：/>
；
After the fuel capacity proportion is successfully calculated, the fuel flow rate of each oil pipeline node is sequentially calculated by combining the following formula:
wherein ,
indicates the fuel split of each oil line node, and>
indicating the total flow of fuel through the oil line set.
In order to solve the above problems, the present invention further provides a fuel system construction apparatus based on a generator set, the apparatus comprising:
the fuel distribution system starting module is used for receiving a fuel system construction instruction and starting the fuel distribution system according to the fuel system construction instruction, wherein the fuel distribution system comprises a fuel pump device and an oil pipeline device, fuel is connected with the fuel pump device through the oil pipeline device, and the oil pipeline device is connected with the fuel pump device through the oil pipeline device
Each oil pipeline is composed of nodes;
the pipe wall information acquisition module is used for driving fuel oil to the oil pipeline device by using the fuel pump device to obtain the fuel oil in the pipe, determining a generator set, and obtaining the pipe wall thickness and the pipe wall heat conductivity of each oil pipeline node according to a pipeline delivery specification table of the oil pipeline device;
the fuel total flow calculation module is used for sequentially calculating the heat exchange coefficients of the fuel in the pipe and each oil pipeline node after the pipe wall thickness and the pipe wall heat conductivity of each oil pipeline node are successfully obtained, so as to obtain the total heat exchange coefficient of the oil pipeline device, and converting the total fuel flow of the oil pipeline device according to the total heat exchange coefficient of the oil pipeline device;
and the fuel oil flow dividing driving module is used for dividing the total fuel oil flow of the oil pipeline device according to the pipeline delivery specification table to obtain the fuel oil flow dividing amount of each oil pipeline node, calculating the fuel oil flow dividing proportion of the oil pipeline device according to each fuel oil flow dividing amount, opening an oil tank switch of the fuel oil dividing system after the fuel oil flow dividing proportion is successfully calculated, and sequentially driving each fuel oil flow dividing amount to a combustion chamber of the generator set through a valve where the oil tank switch is located to complete the construction of the fuel oil system of the generator set.
In order to solve the above problem, the present invention also provides an electronic device, including:
a memory storing at least one instruction;
and the processor executes the instructions stored in the memory to realize the fuel system construction method based on the generator set.
In order to solve the above problem, the present invention further provides a computer-readable storage medium, where at least one instruction is stored, and the at least one instruction is executed by a processor in an electronic device to implement the fuel system construction method based on a generator set.
In order to solve the problems in the background art, the embodiment of the invention firstly receives a fuel system construction instruction, wherein the fuel system construction instruction is generally initiated by a user, and starts a fuel distribution system according to the fuel system construction instruction, wherein the fuel distribution system comprises a fuel pump device and an oil pipeline device, fuel is connected with the fuel pump device through the oil pipeline device, the oil pipeline device consists of n oil pipeline nodes, the fuel pump device is used for driving the fuel to the oil pipeline device to obtain the fuel in the pipe, and the steps are a prepositive basis required for subsequently and accurately calculating the total flow of the fuel of the oil pipeline device. In detail, the specific steps of calculating the total fuel flow of the oil pipeline device comprise: the method comprises the steps of firstly determining a generator set, obtaining the wall thickness and the wall thermal conductivity of each oil pipeline node according to a pipeline delivery specification table of the oil pipeline device, then sequentially calculating the heat exchange coefficients of fuel oil in the pipe and each oil pipeline node after the wall thickness and the wall thermal conductivity of each oil pipeline node are successfully obtained, obtaining the total heat exchange coefficient of the oil pipeline device, and then converting the total fuel oil flow of the oil pipeline device according to the total heat exchange coefficient of the oil pipeline device. Finally, according to a pipeline delivery specification table, dividing the total fuel flow of the oil pipeline device to obtain the fuel split flow of each oil pipeline node, calculating the fuel flow distribution proportion of the oil pipeline device, after the fuel flow distribution proportion calculation is successfully completed, opening an oil tank switch of the fuel distribution system, and sequentially driving each fuel split flow to a combustion chamber of the generator set through a valve where the oil tank switch is located, so as to complete the construction of the fuel system of the generator set. Therefore, the fuel system construction method, the fuel system construction device, the electronic equipment and the computer readable storage medium based on the generator set can realize the optimized fuel supply for the generator set.
Drawings
FIG. 1 is a schematic flow diagram of a fuel system construction method based on a generator set according to an embodiment of the invention;
FIG. 2 is a functional block diagram of a fuel system building apparatus based on a generator set according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an electronic device for implementing the fuel system construction method based on the generator set according to an embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment of the application provides a fuel system construction method based on a generator set. The execution subject of the fuel system construction method based on the generator set includes, but is not limited to, at least one of electronic devices, such as a server, a terminal and the like, which can be configured to execute the method provided by the embodiment of the application. In other words, the fuel system construction method based on the generator set can be executed by software or hardware installed in terminal equipment or server-side equipment, and the software can be a block chain platform. The server includes but is not limited to: a single server, a server cluster, a cloud server or a cloud server cluster, and the like.
Referring to fig. 1, a schematic flow chart of a fuel system construction method based on a generator set according to an embodiment of the present invention is shown. In this embodiment, the fuel system construction method based on the generator set includes:
s1, receiving a fuel system construction instruction, and starting a fuel distribution system according to the fuel system construction instruction, wherein the fuel distribution system comprises a fuel pump device and an oil pipeline device, and fuel is connected with the fuel pump device through the oil pipeline device, and the oil pipeline device is connected with the fuel pump device through a pipeline
And each oil pipeline node.
It can be explained that the fuel oil system is used for providing fuel oil capable of generating heat according to the requirement of the running condition of the generator set, thereby driving the generator set to work.
Further, the fuel system build instructions are typically initiated by a technician of the generator set. Illustratively, the sheetlet is the power generator set engineer of the mining plant, which needs to start the power generator set to explore the mine just discovered, so the sheetlet initiates the fuel system construction instructions with the goal of optimizing the supply of fuel to the power generator set.
It should be emphasized that, after receiving a fuel system construction command, the conventional fuel distribution system directly extracts fuel from a fuel tank and burns the fuel to generate power to drive a generator set, and this driving manner, although feasible, does not optimize the fuel amount, i.e. does not consider the fuel amount extracted from the fuel tank, thereby resulting in a waste phenomenon of excessive fuel amount or a power shortage problem caused by insufficient fuel, so how to optimize the fuel supply is a main technical problem solved by the embodiments of the present invention.
In an embodiment of the invention, the fuel distribution system is a pre-constructed system for performing fuel distribution, fuel quantity staging and fuel stable combustion.
And S2, driving the fuel oil to an oil pipeline device by using the fuel oil pump device to obtain the fuel oil in the pipe.
It should be explained that the in-line fuel means fuel transferred from the fuel tank into the oil line device by the fuel pump device.
In detail, the driving of fuel to the oil pipeline device by the fuel pump device to obtain the fuel in the pipe includes:
starting the fuel pump device, wherein the fuel pump device consists of a heat absorber, a radiator and a pump unit, the heat absorber, the radiator and the pump unit are connected by communicating pipes, and cooling liquid is stored in the communicating pipes;
-sucking fuel from a fuel tank by means of said pump unit, wherein the pump unit is driven by a pump motor and the temperature of the pump unit is measured when the pump unit sucks fuel;
when the temperature of the pump unit is greater than or equal to a preset first temperature threshold value, calculating the calorific value generated by the pump unit in the fuel oil absorption process;
absorbing the heat value by using the heat absorber, and conducting the absorbed heat value to the radiator through the cooling liquid in the communication pipe until the temperature of the pump unit is lower than a preset first temperature threshold value, and stopping the heat absorber;
until the pump unit drives all the required fuel oil to the oil pipeline device, and the fuel oil in the pipe is obtained.
It will be appreciated that embodiments of the present invention are substantially different from other methods of using a pump device because the temperature of the pump device is strictly controlled when the pump device is used to prevent the pump device from being dangerously hot. In an embodiment of the invention, the fuel pump device therefore comprises a heat sink, a heat sink and a pump unit.
For example, after the fuel pump device is started, the fuel pump device drives the pump unit to absorb fuel from the fuel tank, for example, 100L of fuel is required to be extracted, and the pump unit can absorb 0.5L of fuel from the fuel tank per second, so that the heat of the pump unit is gradually increased during the continuous extraction process, and the temperature of the pump unit needs to be continuously monitored.
Further, the calculating the heat value generated by the pump unit in the fuel oil absorption process comprises the following steps:
the calorific value generated by the pump unit in the process of absorbing the fuel oil is calculated by the following formula:
wherein ,
represents the heat quantity generated by the pump unit in the fuel absorbing process, g represents the fuel consumption rate of the internal combustion engine of the pump unit in the working process of the pump unit, n represents the working power of the internal combustion engine, and is based on the judgment result of the judgment result>
Which indicates the temperature difference between the pump unit when it is not started and the current time, and H indicates the lower heating value per unit time generated by the fuel used to drive the pump unit in operation during the combustion process.
It can be understood that when 100L of fuel is required to be pumped according to the above description, the stability of the heat of the pump unit can be controlled at any time, and the fuel in the pipe can be obtained smoothly.
In detail, the method for absorbing heat values by using the heat absorber and conducting the absorbed heat values to the radiator through the cooling liquid in the communication pipe comprises the following steps:
opening a switch of the communicating pipe, transferring the absorbed heat value to the cooling liquid through the communicating pipe by using the heat absorber, and measuring the temperature of the cooling liquid when the temperature of the cooling liquid is increased;
when the temperature is greater than or equal to a preset second temperature threshold value, setting the flowing speed V of the cooling liquid in the communication pipe;
calculating to obtain a heat dissipation coefficient a of the communicating pipe under the environment according to the flowing speed V;
after the heat dissipation coefficient a of the communicating pipe under the environment is successfully calculated, the loss heat value of the communicating pipe when the heat is conducted to the radiator is calculated by the following formula:
wherein ,
represents the lost heat value when the communicating pipe conducts heat to the radiator and is used for storing and storing the heat value>
Indicates the maximum temperature at which the temperature of the cooling liquid rises>
Represents the lowest temperature of the environment of the communicating pipe>
Denotes the diameter of the communication pipe, l denotes the length of the communication pipe;
and according to the heat loss value, calculating a final heat value conducted to the radiator by the cooling liquid by using the following formula:
and recording the final heat value, and completing the driving of the heat absorber to transfer the absorbed heat value to the radiator through the cooling liquid in the communication pipe.
It can be understood that the flow velocity V of the cooling liquid in the communication pipe is related to the temperature of the cooling liquid, the flow velocity V of the cooling liquid is rapidly increased as the temperature continuously rises from the beginning, and the flow velocity V of the cooling liquid is kept unchanged after a certain temperature range is exceeded, so that the setting of the flow velocity V of the cooling liquid according to the temperature is beneficial for the heat absorber to more quickly transfer the absorbed heat value to the radiator, and the heat loss can be effectively reduced.
In detail, the calculating, according to the flow velocity V, a heat dissipation coefficient a of the communication pipe under the environment includes:
selecting two calorimetric points from a communicating tube, wherein a first calorimetric point is located before a second calorimetric point;
introducing heat dissipation test liquid into the communicating pipe, wherein the flow speed of the heat dissipation test liquid in the communicating pipe is V, and when the heat dissipation test liquid sequentially passes through the first heat measurement point and the second heat measurement point, measuring the liquid heat of the heat dissipation test liquid at the first heat measurement point and the second heat measurement point;
and calculating the heat radiation coefficient a of the communication pipe to the environment based on the liquid heat at the first heat measurement point and the second heat measurement point.
For example, assuming that the communication pipe is elongated, two calorimetric points can be selected from the surface of the communication pipe, wherein the calorimetric points are used for measuring the heat loss of the calorimetric points along with the change of time, such as the heat when the heat-dissipation test solution passes through the calorimetric point A
The heat quantity when the heat dissipation test liquid passes through the heat measuring point B is ≥>
Therefore, the heat dissipation coefficient of the communicating pipe to the environment can be further determined according to the heat of the two heat measurement points.
Specifically, the calculating of the heat dissipation coefficient of the communication pipe with respect to the environment based on the heat of the liquid at the first calorimetric point and the second calorimetric point includes:
the heat dissipation coefficient of the communicating pipe to the environment is calculated by the following formula:
wherein T represents a time difference between the heat dissipation test solution passing through the calorimetric point a and the calorimetric point B in sequence.
And S3, determining the generator set, and obtaining the pipe wall thickness and the pipe wall thermal conductivity of each oil pipeline node according to a pipeline delivery specification table of the oil pipeline device.
The pipeline delivery specification table comprises a model information table, a size information table and a heat conduction information table of the oil pipeline device, wherein the model information table comprises the model of the oil pipeline and the model of an oil pipe joint; the size information table comprises the inner diameter of the oil pipe, the outer diameter of the oil pipe, the length of the oil pipe and the thickness of the pipe wall; the heat conduction information table includes the pipe wall thermal conductivity.
And S4, after the wall thickness and the wall thermal conductivity of each oil pipeline node are successfully obtained, sequentially calculating the heat exchange coefficients of the fuel oil in the pipe and each oil pipeline node to obtain the total heat exchange coefficient of the oil pipeline device.
Understandably, due to tubing routing
The total heat exchange coefficient of the oil pipeline device can be obtained by only calculating the heat exchange coefficient of the fuel oil in the pipe and each oil pipeline node. According to the total heat exchange coefficient of the oil pipeline device, the released heat during fuel combustion can be deduced, and further the total fuel flow required by the oil pipeline device is obtained through conversion.
In detail, the sequentially calculating the heat transfer coefficients of the fuel oil in the pipe and each oil pipeline node to obtain the total heat transfer coefficient of the oil pipeline device comprises:
determining the inner diameter and the outer diameter of the oil pipe of each oil pipeline node according to the pipeline delivery specification table;
respectively calculating the surface area of the inner wall and the surface area of the outer wall of each oil pipeline node according to the inner diameter and the outer diameter of the oil pipe;
starting the oil pipeline device, measuring the flow speed of the fuel oil in the pipe in the oil pipeline device, and calculating the heat exchange coefficient between the fuel oil in the pipe and the inner wall of the pipe according to the flow speed of the fuel oil in the pipe in the oil pipeline device;
after the heat exchange coefficients of the fuel oil in the pipe and the inner wall of the pipe are successfully calculated, the heat exchange coefficients of the fuel oil in the pipe and each oil pipeline node are sequentially calculated according to the surface area of the inner wall of the pipe and the surface area of the outer wall of the pipe and by combining the following formula:
wherein K represents the heat exchange coefficient of the fuel oil in the pipe and each oil pipeline node,
represents the pipe inner wall surface area of each oil pipe node, is->
Represents the pipe outer wall surface area of each oil pipe node, and>
represents the heat exchange coefficient between the fuel in the pipe and the inner wall of the pipe>
Represents the heat exchange coefficient between the outer wall of the tube and the environment outside the tube>
Represents the wall thickness of the tube, is greater than or equal to>
Represents the thermal conductivity of the tube wall;
and obtaining the total heat exchange coefficient of the oil pipeline device according to the fuel oil in the pipe and the heat exchange coefficient of each oil pipeline node.
Further, the measuring the flow velocity of the fuel oil in the pipe in the oil pipeline device and calculating the heat exchange coefficient between the fuel oil in the pipe and the inner wall of the pipe according to the flow velocity of the fuel oil in the pipe in the oil pipeline device includes:
determining an oil pipeline device, and connecting a flow meter in the oil pipeline device;
selecting a section measuring point from the oil pipeline device, and determining the inner diameter of the section measuring point according to a pipeline delivery specification table;
starting the flow meter, and measuring the fuel flow of the fuel in the pipe passing through the section measuring point;
after the fuel flow measurement of the fuel in the pipe passing through the section measurement point is successfully completed, the flow speed of the fuel in the pipe in the oil pipeline device is calculated according to the inner diameter of the section measurement point by using the following formula:
wherein ,
indicates the flow speed of the fuel in the pipe in the oil pipe device>
Indicating the fuel flow in the pipe through a determined point of the cross-section>
Inner diameters of cross-sectional measurement points;
calculating the heat exchange coefficient between the fuel oil in the pipe and the inner wall of the pipe according to the flowing speed of the fuel oil in the pipe in the oil pipeline device:
wherein ,
represents the heat transfer coefficient between the fuel in the tube and the inner wall of the tube>
Represents the oil pipe inner diameter of each oil pipe node>
The specific heat capacity of the fuel in the pipe is shown, p represents the density of the fuel in the pipe, and w represents the viscosity of the fuel in the pipe.
It can be understood that the flow meter used in the embodiment of the invention is not influenced by the density, viscosity and temperature of the fluid in the pipe in the measuring process, the measuring precision is high, and the fuel oil is a fluid which has high density, high viscosity and rapid temperature rise after being heated, so the flow meter is suitable for measuring the flow of the fuel oil.
Further, the obtaining of the total heat exchange coefficient of the oil pipeline device according to the heat exchange coefficient of the fuel oil in the pipe and each oil pipeline node comprises:
and calculating the total heat exchange coefficient of the oil pipeline device by using the following formula:
wherein ,
represents the total heat exchange coefficient of the oil pipeline device>
Represents the heat exchange coefficient between the fuel in the pipe and the x-th oil pipeline node>
Represents the tube inner wall surface area of the xth oil line node, based on the total volume of the fluid>
Representing the tube outer wall surface area of the x-th oil line node.
And S5, converting the total fuel flow of the oil pipeline device according to the total heat exchange coefficient of the oil pipeline device.
In detail, the converting the total fuel flow of the oil pipeline device according to the total heat exchange coefficient of the oil pipeline device includes:
the total fuel flow of the oil pipeline device is calculated by the following formula:
wherein ,
indicating the total flow of fuel through the oil line set,/>
represents the total heat exchange coefficient of the oil pipeline device>
Indicates the calorific value of the fuel and is selected>
Represents the tube inner wall surface area of the xth oil line node>
Representing the difference between the maximum temperature of the fuel in the oil line set and the minimum temperature of the environment in which the oil line set is located.
And S6, dividing the total fuel flow of the oil pipeline device according to the pipeline delivery specification table to obtain the fuel flow rate of each oil pipeline node.
It can be understood that the fuel oil capacity of each oil pipeline node in the oil pipeline device can be obtained according to the dimension information table of the pipeline delivery specification table. The fuel oil volume proportion of each oil pipeline node is used as a basis, the total fuel oil flow of the oil pipeline device is divided according to the proportion, and the fuel oil flow division of each oil pipeline node can be converted.
Further, the dividing the total fuel flow of the oil pipeline device according to the pipeline delivery specification table to obtain the fuel flow split of each oil pipeline node includes:
obtaining the pipeline delivery specification table to obtain the oil pipe inner diameter and the oil pipe length of each oil pipeline node of the oil pipeline device, wherein the oil pipe inner diameter of the x-th oil pipeline node is
The length of the oil pipe is>
；
Calculating the fuel oil capacity of each oil pipeline node according to the inner diameter and the length of the oil pipe of each oil pipeline node, wherein the x-th oilFuel capacity at a pipeline node of
；
Sequentially marking the fuel capacity of each oil pipeline node as
、/>
、/>
、……、/>
The fuel capacity ratio of ^ er/er of each oil pipeline node can be obtained>
：/>
：/>
：……：/>
；
After the fuel capacity proportion is successfully calculated, the fuel flow rate of each oil pipeline node is sequentially calculated by combining the following formula:
wherein ,
indicates the fuel split of each oil line node, and>
indicating the total flow of fuel through the oil line set.
And S7, calculating the fuel oil quantity distribution proportion of the oil pipeline device according to each fuel oil split flow.
It can be understood that the fuel oil quantity distribution proportion of the oil pipeline device is not directly equal to the fuel oil distribution proportion of each oil pipeline node, because the calculated fuel oil distribution proportion of each oil pipeline node is based on no loss in the fuel oil production and transportation process, and therefore the actual driving fuel oil distribution proportion of each oil pipeline node is larger than the calculated fuel oil distribution proportion value in consideration of loss.
Illustratively, after fuel is produced from an oil refinery and stored in an oil storage tank, the fuel loss rate is 2%, after the fuel is stored in the oil storage tank and delivered to a customer, the fuel loss rate reaches 3%, and the fuel split flow of one of the oil pipeline nodes is assumed to be fuel split flow
The actual fuel-driven partial flow at the oil line node for calculating the fuel quantity distribution ratio at the oil line device is then to be ≥ h>
And calculating the fuel oil quantity distribution proportion of the oil pipeline device on the basis of the actual fuel oil driving split flow of each oil pipeline node.
And S8, after the fuel oil quantity distribution proportion calculation is successfully completed, opening an oil tank switch of the fuel oil distribution system, and sequentially driving each fuel oil flow division quantity to a combustion chamber of the generator set through a valve where the oil tank switch is located, so that the construction of the fuel oil system of the generator set is completed.
The combustion chamber has the functions of quickly combusting the received fuel oil by flow division, starting the generator set by utilizing high-temperature fuel gas generated by combustion, preventing the generator set from overtemperature and finally completing the construction of a fuel oil system of the generator set.
In order to solve the problems in the background art, the embodiment of the invention firstly receives a fuel system construction instruction, wherein the fuel system construction instruction is generally initiated by a user, and starts a fuel distribution system according to the fuel system construction instruction, wherein the fuel distribution system comprises a fuel pump device and an oil pipeline device, fuel is connected with the fuel pump device through the oil pipeline device, the oil pipeline device consists of n oil pipeline nodes, the fuel pump device is used for driving the fuel to the oil pipeline device to obtain the fuel in the pipe, and the steps are a prepositive basis required for subsequently and accurately calculating the total flow of the fuel of the oil pipeline device. In detail, the specific steps of calculating the total fuel flow of the oil pipeline device comprise: the method comprises the steps of firstly determining a generator set, obtaining the wall thickness and the wall thermal conductivity of each oil pipeline node according to a pipeline delivery specification table of the oil pipeline device, then sequentially calculating the heat exchange coefficients of fuel oil in the pipe and each oil pipeline node after the wall thickness and the wall thermal conductivity of each oil pipeline node are successfully obtained, obtaining the total heat exchange coefficient of the oil pipeline device, and then converting the total fuel oil flow of the oil pipeline device according to the total heat exchange coefficient of the oil pipeline device. And finally, dividing the total fuel flow of the oil pipeline device according to a pipeline delivery specification table to obtain the fuel split flow of each oil pipeline node, calculating the fuel flow distribution proportion of the oil pipeline device, opening an oil tank switch of the fuel distribution system after the calculation of the fuel flow distribution proportion is finished successfully, and sequentially driving each fuel split flow to a combustion chamber of a generator set through a valve where the oil tank switch is located to finish the construction of the fuel system of the generator set. Therefore, the fuel system construction method, the fuel system construction device, the electronic equipment and the computer readable storage medium based on the generator set can realize the optimized fuel supply for the generator set.
Fig. 2 is a functional block diagram of a fuel system construction device based on a generator set according to an embodiment of the present invention.
The fuel system construction apparatus 100 based on the generator set according to the present invention may be installed in an electronic device. According to the realized functions, the fuel system construction device 100 based on the generator set can comprise a fuel distribution system starting module 101, a pipe wall information acquisition module 102, a total fuel flow calculation module 103 and a fuel split flow driving module 104. The module of the present invention, which may also be referred to as a unit, refers to a series of computer program segments that can be executed by a processor of an electronic device and that can perform a fixed function, and that are stored in a memory of the electronic device.
The fuel distribution system starting module 101 is used for receiving a fuel system construction instruction and starting the fuel distribution system according to the fuel system construction instruction, wherein the fuel distribution system comprises a fuel pump device and an oil pipeline device, and fuel is connected with the fuel pump device through the oil pipeline device, and the oil pipeline device is composed of a first pipeline, a second pipeline, a third pipeline and a fourth pipeline
Each oil pipeline node;
the pipe wall information obtaining module 102 is configured to drive fuel oil to an oil pipeline device by using the fuel pump device to obtain fuel oil in the pipe, determine a generator set, and obtain a pipe wall thickness and a pipe wall thermal conductivity of each oil pipeline node according to a pipeline delivery specification table of the oil pipeline device;
the total fuel flow calculation module 103 is configured to, after the wall thickness and the wall thermal conductivity of each oil pipeline node are successfully obtained, sequentially calculate the heat exchange coefficients of the fuel in the pipe and each oil pipeline node to obtain a total heat exchange coefficient of the oil pipeline device, and convert the total fuel flow of the oil pipeline device according to the total heat exchange coefficient of the oil pipeline device;
the fuel flow dividing driving module 104 is configured to divide a total fuel flow of the oil pipeline device according to the pipeline delivery specification table to obtain a fuel flow dividing amount of each oil pipeline node, calculate a fuel flow dividing ratio of the oil pipeline device according to each fuel flow dividing amount, open an oil tank switch of the fuel flow dividing system after the calculation of the fuel flow dividing ratio is completed successfully, and sequentially drive each fuel flow dividing amount to a combustion chamber of the generator set through a valve where the oil tank switch is located to complete construction of a fuel system of the generator set.
In detail, when the modules in the fuel system construction apparatus 100 based on the generator set in the embodiment of the present invention are used, the same technical means as the block chain based product supply chain management method described in fig. 1 above are adopted, and the same technical effects can be produced, which is not described herein again.
Fig. 3 is a schematic structural diagram of an electronic device for implementing a fuel system construction method based on a generator set according to an embodiment of the present invention.
The electronic device 1 may include a processor 10, a memory 11, and a bus 12, and may further include a computer program, such as a fuel system construction method program based on a generator set, stored in the memory 11 and executable on the processor 10.
The memory 11 includes at least one type of readable storage medium, which includes flash memory, removable hard disk, multimedia card, card-type memory (e.g., SD or DX memory, etc.), magnetic memory, magnetic disk, optical disk, etc. The memory 11 may in some embodiments be an internal storage unit of the electronic device 1, such as a removable hard disk of the electronic device 1. The memory 11 may also be an external storage device of the electronic device 1 in other embodiments, such as a plug-in mobile hard disk, a Smart Media Card (SMC), a Secure Digital (SD) card, a flash card (FlashCard), and the like, which are provided on the electronic device 1. Further, the memory 11 may also include both an internal storage unit and an external storage device of the electronic device 1. The memory 11 may be used to store not only application software installed in the electronic device 1 and various types of data, such as codes of a fuel system construction method program based on a generator set, but also temporarily store data that has been output or will be output.
The processor 10 may be composed of an integrated circuit in some embodiments, for example, a single packaged integrated circuit, or may be composed of a plurality of integrated circuits packaged with the same or different functions, including one or more Central Processing Units (CPUs), microprocessors, digital processing chips, graphics processors, and combinations of various control chips. The processor 10 is a control unit (control unit) of the electronic device, connects various components of the whole electronic device by using various interfaces and lines, and executes various functions and processes data of the electronic device 1 by running or executing programs or modules (for example, a fuel system construction method program based on a generator set, etc.) stored in the memory 11 and calling data stored in the memory 11.
The bus 12 may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus 12 may be divided into an address bus, a data bus, a control bus, etc. The bus 12 is arranged to enable connection communication between the memory 11 and at least one processor 10 or the like.
Fig. 3 shows only an electronic device with components, and it will be understood by those skilled in the art that the structure shown in fig. 3 does not constitute a limitation of the electronic device 1, and may comprise fewer or more components than those shown, or some components may be combined, or a different arrangement of components.
For example, although not shown, the electronic device 1 may further include a power supply (such as a battery) for supplying power to each component, and preferably, the power supply may be logically connected to the at least one processor 10 through a power management device, so as to implement functions of charge management, discharge management, power consumption management, and the like through the power management device. The power supply may also include any component of one or more dc or ac power sources, recharging devices, power failure detection circuitry, power converters or inverters, power status indicators, and the like. The electronic device 1 may further include various sensors, a bluetooth module, a Wi-Fi module, and the like, which are not described herein again.
Further, the electronic device 1 may further include a network interface, and optionally, the network interface may include a wired interface and/or a wireless interface (such as a WI-FI interface, a bluetooth interface, etc.), which are generally used to establish a communication connection between the electronic device 1 and another electronic device.
Optionally, the electronic device 1 may further comprise a user interface, which may be a Display (Display), an input unit (such as a Keyboard), and optionally a standard wired interface, a wireless interface. Alternatively, in some embodiments, the display may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, an OLED (organic light-emitting diode) touch device, or the like. The display, which may also be referred to as a display screen or display unit, is suitable for displaying information processed in the electronic device 1 and for displaying a visualized user interface, among other things.
It is to be understood that the described embodiments are for purposes of illustration only and that the scope of the appended claims is not limited to such structures.
The fuel system construction method program based on the generator set stored in the memory 11 of the electronic device 1 is a combination of a plurality of instructions, and when running in the processor 10, can realize that:
receiving a fuel system construction instruction, and starting a fuel distribution system according to the fuel system construction instruction, wherein the fuel distribution system comprises a fuel pump device and an oil pipeline device, and fuel is connected with the fuel pump device through the oil pipeline device, and the oil pipeline device is connected with the fuel pump device through the oil pipeline device
Each oil pipeline node;
driving fuel oil to an oil pipeline device by using the fuel pump device to obtain fuel oil in a pipe;
determining a generator set, and obtaining the pipe wall thickness and the pipe wall thermal conductivity of each oil pipeline node according to a pipeline delivery specification table of the oil pipeline device;
when the pipe wall thickness and the pipe wall thermal conductivity of each oil pipeline node are successfully obtained, sequentially calculating the heat exchange coefficients of the fuel oil in the pipe and each oil pipeline node to obtain the total heat exchange coefficient of the oil pipeline device;
converting the total fuel flow of the oil pipeline device according to the total heat exchange coefficient of the oil pipeline device;
dividing the total fuel flow of the oil pipeline device according to the pipeline delivery specification table to obtain the fuel flow split of each oil pipeline node;
calculating the fuel oil quantity distribution proportion of the oil pipeline device according to each fuel oil split flow;
and after the fuel oil quantity distribution proportion calculation is successfully completed, opening an oil tank switch of the fuel oil distribution system, and sequentially driving each fuel oil flow division quantity to a combustion chamber of the generator set through a valve where the oil tank switch is located to complete the construction of the fuel oil system of the generator set.
Specifically, the specific implementation method of the processor 10 for the instruction may refer to the description of the relevant steps in the embodiments corresponding to fig. 1 to fig. 3, which is not repeated herein.
Further, the integrated modules/units of the electronic device 1, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. The computer readable storage medium may be volatile or non-volatile. For example, the computer-readable medium may include: any entity or device capable of carrying said computer program code, a recording medium, a usb-disk, a removable hard disk, a magnetic disk, an optical disk, a computer memory, a Read-only memory (ROM).
The present invention also provides a computer-readable storage medium storing a computer program which, when executed by a processor of an electronic device, implements:
receiving a fuel system construction instruction, and starting a fuel distribution system according to the fuel system construction instruction, wherein the fuel distribution system comprises a fuel pump device and an oil pipeline deviceAnd the fuel is connected with the fuel pump device through an oil pipeline device, wherein the oil pipeline device is composed of
Each oil pipeline node;
driving fuel oil to an oil pipeline device by using the fuel pump device to obtain fuel oil in a pipe;
determining a generator set, and obtaining the wall thickness and the wall thermal conductivity of each oil pipeline node according to a pipeline delivery specification table of the oil pipeline device;
when the pipe wall thickness and the pipe wall thermal conductivity of each oil pipeline node are successfully obtained, sequentially calculating the heat exchange coefficients of the fuel oil in the pipe and each oil pipeline node to obtain the total heat exchange coefficient of the oil pipeline device;
converting the total fuel flow of the oil pipeline device according to the total heat exchange coefficient of the oil pipeline device;
dividing the total fuel flow of the oil pipeline device according to the pipeline delivery specification table to obtain the fuel flow split of each oil pipeline node;
calculating the fuel quantity distribution proportion of the oil pipeline device according to each fuel split flow;
and after the fuel oil quantity distribution proportion calculation is successfully completed, opening an oil tank switch of the fuel oil distribution system, and sequentially driving each fuel oil flow division quantity to a combustion chamber of the generator set through a valve where the oil tank switch is located to complete the construction of the fuel oil system of the generator set.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus, device and method can be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules is only one logical functional division, and other divisions may be realized in practice.
The modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, functional modules in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional module.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof.
The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims shall not be construed as limiting the claim concerned.
The block chain is a novel application mode of computer technologies such as distributed data storage, point-to-point transmission, a consensus mechanism, an encryption algorithm and the like. A block chain (Blockchain), which is essentially a decentralized database, is a series of data blocks associated by using a cryptographic method, and each data block contains information of a batch of network transactions, so as to verify the validity (anti-counterfeiting) of the information and generate a next block. The blockchain may include a blockchain underlying platform, a platform product service layer, an application service layer, and the like.
Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. A plurality of units or means recited in the system claims may also be implemented by one unit or means in software or hardware. The terms second, etc. are used to denote names, but not any particular order.
Finally, it should be noted that the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the same, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. A fuel system construction method based on a generator set is characterized by comprising the following steps:
receiving a fuel system construction instruction, and starting a fuel distribution system according to the fuel system construction instruction, wherein the fuel distribution system comprises a fuel pump device and an oil pipeline device, and fuel is connected with the fuel pump device through the oil pipeline device, wherein the oil pipeline device consists of n oil pipeline nodes;
driving the fuel oil to an oil pipeline device by using the fuel oil pump device to obtain the fuel oil in the pipe;
determining a generator set, and obtaining the wall thickness and the wall thermal conductivity of each oil pipeline node according to a pipeline delivery specification table of the oil pipeline device;
when the pipe wall thickness and the pipe wall thermal conductivity of each oil pipeline node are successfully obtained, sequentially calculating the heat exchange coefficients of the fuel oil in the pipe and each oil pipeline node to obtain the total heat exchange coefficient of the oil pipeline device;
converting the total fuel flow of the oil pipeline device according to the total heat exchange coefficient of the oil pipeline device;
dividing the total fuel flow of the oil pipeline device according to the pipeline delivery specification table to obtain the fuel flow split of each oil pipeline node;
calculating the fuel quantity distribution proportion of the oil pipeline device according to each fuel split flow;
and after the fuel oil quantity distribution proportion calculation is successfully completed, opening an oil tank switch of the fuel oil distribution system, and sequentially driving each fuel oil flow division quantity to a combustion chamber of the generator set through a valve where the oil tank switch is located to complete the construction of the fuel oil system of the generator set.
2. The genset-based fuel system construction method of claim 1 wherein driving fuel to an oil line device with the fuel pump device to obtain in-line fuel comprises:
starting the fuel pump device, wherein the fuel pump device consists of a heat absorber, a radiator and a pump unit, the heat absorber, the radiator and the pump unit are connected by a communicating pipe, and cooling liquid is stored in the communicating pipe;
absorbing fuel from a fuel tank using the pump unit, wherein the pump unit is driven by a pump engine and measures the temperature of the pump unit when the pump unit absorbs fuel;
when the temperature of the pump unit is greater than or equal to a preset first temperature threshold value, calculating the calorific value generated by the pump unit in the fuel oil absorption process;
absorbing the heat value by using the heat absorber, and conducting the absorbed heat value to the radiator through the cooling liquid in the communication pipe until the temperature of the pump unit is less than a preset first temperature threshold value, and stopping the heat absorber;
until the pump unit drives all the required fuel oil to the oil pipeline device to obtain the fuel oil in the pipe.
3. The genset-based fuel system construction method of claim 2 wherein calculating the amount of heat generated by the pump unit during fuel absorption comprises:
the calorific value generated by the pump unit in the process of absorbing the fuel oil is calculated by the following formula:
wherein ,
representing the amount of heat generated by the pump unit during fuel absorption,
indicating the fuel consumption rate of the internal combustion engine of the pump unit when the pump unit is in operation,
which represents the operating power of the internal combustion engine,
indicating the temperature difference of the pump unit when not activated and at the present moment,
indicating the lower heating value per unit time generated by the fuel used to drive the pump unit during the combustion process.
4. The genset-based fuel system construction method of claim 3 wherein the absorbing the heat value with the heat sink and conducting the absorbed heat value to a radiator through the coolant in the communication pipe comprises:
opening a switch of the communicating pipe, transferring the absorbed heat value to the cooling liquid through the communicating pipe by using the heat absorber, and measuring the temperature of the cooling liquid when the temperature of the cooling liquid is increased;
when the temperature is greater than or equal to a preset second temperature threshold value, setting the flow speed of the cooling liquid in the communication pipe
；
According to the flow velocity
And calculating to obtain the heat dissipation coefficient of the communicating pipe under the environment
；
When the heat dissipation coefficient of the communication pipe pair under the environment is successfully completed
After calculation, the loss heat value when the communicating pipe conducts heat to the radiator is calculated by using the following formula:
wherein ,
indicating the amount of heat lost when the communication tube conducts heat to the heat sink,
indicates the highest temperature at which the temperature of the coolant rises,
which represents the lowest temperature of the environment in which the feed-through pipe is located,
which indicates the diameter of the communicating tube,
indicating the length of the communicating tube;
and according to the heat loss value, calculating a final heat value conducted to the radiator by the cooling liquid by using the following formula:
and recording the final heat value, and completing the driving of the heat absorber to transfer the absorbed heat value to the radiator through the cooling liquid in the communication pipe.
5. The fuel system construction method based on the generator set according to claim 4, wherein the step of sequentially calculating the heat exchange coefficient of the fuel in the pipe and each oil pipeline node to obtain the total heat exchange coefficient of the oil pipeline device comprises the following steps:
determining the inner diameter and the outer diameter of the oil pipe of each oil pipeline node according to the pipeline delivery specification table;
respectively calculating the surface area of the inner wall and the surface area of the outer wall of each oil pipeline node according to the inner diameter and the outer diameter of the oil pipe;
starting the oil pipeline device, measuring the flow speed of the fuel oil in the pipe in the oil pipeline device, and calculating the heat exchange coefficient between the fuel oil in the pipe and the inner wall of the pipe according to the flow speed of the fuel oil in the pipe in the oil pipeline device;
after the heat exchange coefficients of the fuel oil in the pipe and the inner wall of the pipe are successfully calculated, the heat exchange coefficients of the fuel oil in the pipe and each oil pipeline node are sequentially calculated according to the surface area of the inner wall of the pipe and the surface area of the outer wall of the pipe and by combining the following formula:
wherein ,
representing the heat exchange coefficient of the fuel oil in the pipe and each oil pipeline node,
representing the tube inner wall surface area of each oil line node,
representing the tube outer wall surface area of each oil line node,
representing the heat exchange coefficient between the fuel in the pipe and the inner wall of the pipe,
representing the heat transfer coefficient between the outer wall of the tube and the environment outside the tube,
indicating wall thickness of pipeThe degree of the magnetic field is measured,
represents the wall thermal conductivity;
and obtaining the total heat exchange coefficient of the oil pipeline device according to the fuel oil in the pipe and the heat exchange coefficient of each oil pipeline node.
6. The fuel system construction method based on generator set according to claim 5, wherein the measuring the flow speed of the fuel in the pipe in the oil pipeline device and calculating the heat exchange coefficient between the fuel in the pipe and the inner wall of the pipe according to the flow speed of the fuel in the pipe in the oil pipeline device comprises:
determining an oil pipeline device, and connecting a flow meter in the oil pipeline device;
selecting a section measuring point from the oil pipeline device, and determining the inner diameter of the section measuring point according to a pipeline delivery specification table;
starting the flow meter, and measuring the fuel flow of the fuel in the pipe passing through the section measuring point;
after the fuel flow of the fuel in the pipe passing through the section measuring point is successfully measured, the flow speed of the fuel in the pipe in the oil pipeline device is calculated by using the following formula according to the inner diameter of the section measuring point:
wherein ,
indicating the flow rate of the fuel in the pipe in the oil line device,
representing the fuel flow rate of the fuel in the pipe through the cross-sectional measurement points,
inner diameters of cross-sectional measurement points;
calculating the heat exchange coefficient between the fuel oil in the pipe and the inner wall of the pipe according to the flowing speed of the fuel oil in the pipe in the oil pipeline device:
wherein ,
representing the heat exchange coefficient between the fuel in the pipe and the inner wall of the pipe,
the tubing inside diameter of each tubing line node is shown,
which represents the specific heat capacity of the fuel in the pipe,
which is indicative of the density of the fuel in the tube,
indicating the viscosity of the fuel in the tube.
7. The fuel system construction method based on the generator set according to claim 6, wherein the obtaining of the total heat exchange coefficient of the oil pipeline device according to the heat exchange coefficients of the fuel in the pipe and each oil pipeline node comprises:
and calculating the total heat exchange coefficient of the oil pipeline device by using the following formula:
wherein ,
represents the overall heat transfer coefficient of the oil line set,
indicating fuel in the pipe and
the heat exchange coefficient of each oil pipeline node,
is shown as
The surface area of the inner wall of the pipe of each oil pipeline node,
is shown as
The surface area of the outer wall of the pipe of each oil pipeline node.
8. The fuel system construction method based on the generator set according to claim 7, wherein the step of converting the total fuel flow of the oil pipeline device according to the total heat exchange coefficient of the oil pipeline device comprises the following steps:
and calculating the total fuel flow of the oil pipeline device by using the following formula:
wherein ,
indicating the total flow of fuel through the oil line set,
represents the overall heat transfer coefficient of the oil line set,
which represents the heating value of the fuel oil,
is shown as
The surface area of the inner wall of the pipe of each oil pipeline node,
representing the difference between the maximum temperature of the fuel in the oil line set and the minimum temperature of the environment in which the oil line set is located.
9. The fuel system construction method based on the generator set according to claim 8, wherein the dividing the total fuel flow of the oil pipeline device according to the pipeline delivery specification table to obtain the fuel split flow of each oil pipeline node comprises:
obtaining the pipeline delivery specification table to obtain the oil pipe inner diameter and the oil pipe length of each oil pipe node of the oil pipe device, wherein
The inner diameter of the oil pipe of each oil pipe joint is
The length of the oil pipe is
；
Calculating the fuel oil capacity of each oil pipeline node according to the inner diameter and the length of the oil pipe of each oil pipeline node, wherein the first step is to calculate the fuel oil capacity of each oil pipeline node
Fuel oil capacity of individual oil pipeline node is
；
Sequentially marking the fuel capacity of each oil pipeline node as
、
、
、……、
The fuel capacity proportion of each oil pipeline node can be obtained as
：
：
：……：
；
After the fuel capacity proportion is successfully calculated, the fuel flow rate of each oil pipeline node is sequentially calculated by combining the following formula:
wherein ,
indicating the fuel split flow rate of each oil line node,
indicating the total flow of fuel through the oil line set.
10. A fuel system construction device based on a generator set is characterized by comprising the following components:
a fuel distribution system start-up module for receiving fuelA system construction instruction for starting the fuel distribution system according to the fuel system construction instruction, wherein the fuel distribution system comprises a fuel pump device and an oil pipeline device, and the fuel is connected with the fuel pump device through the oil pipeline device, wherein the oil pipeline device is connected with the fuel pump device through a pipeline
Each oil pipeline node;
the pipe wall information acquisition module is used for driving fuel oil to the oil pipeline device by using the fuel pump device to obtain the fuel oil in the pipe, determining a generator set, and obtaining the pipe wall thickness and the pipe wall thermal conductivity of each oil pipeline node according to a pipeline delivery specification table of the oil pipeline device;
the fuel total flow calculation module is used for sequentially calculating the heat exchange coefficients of the fuel in the pipe and each oil pipeline node after the pipe wall thickness and the pipe wall heat conductivity of each oil pipeline node are successfully obtained, so as to obtain the total heat exchange coefficient of the oil pipeline device, and converting the total fuel flow of the oil pipeline device according to the total heat exchange coefficient of the oil pipeline device;
and the fuel flow dividing driving module is used for dividing the total fuel flow of the oil pipeline device according to the pipeline delivery specification table to obtain the fuel flow dividing amount of each oil pipeline node, calculating the fuel flow distribution proportion of the oil pipeline device according to each fuel flow dividing amount, opening an oil tank switch of the fuel flow distribution system after the calculation of the fuel flow distribution proportion is successfully completed, and sequentially driving each fuel flow dividing amount to a combustion chamber of the generator set through a valve where the oil tank switch is located to complete the construction of the fuel system of the generator set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310126172.2A CN115839282B (en) | 2023-02-17 | 2023-02-17 | Method and device for constructing fuel system based on generator set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310126172.2A CN115839282B (en) | 2023-02-17 | 2023-02-17 | Method and device for constructing fuel system based on generator set |
Publications (2)
| Publication Number | Publication Date |
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| CN115839282A true CN115839282A (en) | 2023-03-24 |
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