CN115292963B - Heat supply pipe network regulation and control method and device based on simulation, electronic equipment and medium - Google Patents
Heat supply pipe network regulation and control method and device based on simulation, electronic equipment and medium Download PDFInfo
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Abstract
The application relates to a method, a device, electronic equipment and a medium for regulating and controlling a heat supply pipe network based on simulation, which relate to the technical field of regulation and control of the heat supply pipe network, wherein the method comprises the following steps: acquiring operation information of a user based on pipe network drawing information, establishing a pipe network model, acquiring temperature information at a heat source, temperature information of each branch and a node, pressure difference information and flow information of each branch, and displaying each temperature information, pressure difference information and flow information at a corresponding position of the pipe network model; establishing a pipe network analysis diagram based on the pipe network model, and corresponding the pipe network analysis diagram to the temperature information, the pressure difference information and the flow information of each position of the pipe network model one by one; performing simulation analysis based on the pipe network analysis diagram, and determining the transition flow of each first branch; and generating operation guide information for guiding the user to adjust the flow of each first branch to the transition flow. This application has the effect that improves pipe network and adjusts efficiency.
Description
Technical Field
The application relates to the technical field of heating pipe network regulation, in particular to a heating pipe network regulation and control method and device based on simulation, electronic equipment and a medium.
Background
The phenomenon that the room temperature of a user far away from a heat source is lower than the required room temperature, and the room temperature of a user close to the heat source often exceeds the minimum requirement, so that the phenomenon of windowing, ventilation and heat dissipation exists.
The measure that heating enterprises often go to aiming at the phenomenon is to increase the flow of a circulating water pump of a secondary heating network, so that the room temperature of a terminal user meets the requirement, and the phenomenon that the room temperature of a near-end user exceeds the standard is further aggravated. The heat supply enterprises can properly adjust the secondary heat supply network according to manual experience. However, because different loops of the pipe network have high correlation, that is, when one loop is adjusted, the flow rate of the other loops is also affected to different degrees. Therefore, the labor and the time are wasted when the room temperature reaches the standard by manually adjusting the hydraulic balance of the pipe network.
Disclosure of Invention
In order to improve the pipe network regulation efficiency, the application provides a method, a device, electronic equipment and a medium for regulating and controlling a heat supply pipe network based on simulation.
In a first aspect, the application provides a method for regulating and controlling a heat supply pipe network based on simulation, which adopts the following technical scheme:
a heating pipe network regulation and control method based on simulation comprises the following steps:
acquiring operation information of a user based on pipe network drawing information, and establishing a pipe network model, wherein the pipe network model comprises a heat source, a plurality of buildings and a plurality of branches connected between the heat source and each building, the branches comprise a first branch where each building is located and a second branch connecting the heat source and each building, and the pipe network model further comprises a node where two adjacent branches are intersected;
acquiring temperature information at the heat source, temperature information at each branch and the node, pressure difference information and flow information of each branch, and displaying the temperature information, the pressure difference information and the flow information at corresponding positions of the pipe network model;
establishing a pipe network analysis graph based on the pipe network model, and enabling the pipe network analysis graph to correspond to the temperature information, the pressure difference information and the flow information of each position of the pipe network model one by one;
performing simulation analysis based on the pipe network analysis diagram to determine the transition flow of each first branch;
and generating operation guide information for guiding the user to adjust the flow of each first branch to the transition flow.
By adopting the technical scheme, the electronic equipment acquires the operation information of a user, so that a pipe network model consistent with the drawing information is established, the electronic equipment acquires the temperature information, the pressure difference information and the flow information of each position of a pipe network, the information is displayed and meanwhile calculation is carried out according to the data, the electronic equipment establishes a pipe network analysis graph according to the pipe network model, the transition flow of each first branch is determined according to the temperature information, the pressure difference information and the flow information of each branch in the pipe network analysis graph, and then the electronic equipment generates operation guide information according to each transition flow, so that the user can adjust the flow of each building according to the operation guide information, and quick and accurate adjustment is realized.
Further, the performing simulation analysis based on the pipe network analysis graph to determine the transition flow of each first branch includes:
acquiring water pump lift information and house information of each building; calculating actual impedance of each branch based on the differential pressure information, the flow information and a related calculation formula of each branch;
determining theoretical flow of each first branch based on the house information of the building;
determining a plurality of independent loop pressure balance equations and node flow equations based on the pipe network analysis graph;
calculating theoretical flow of each second branch based on the water pump lift information, the node flow equation and the theoretical flow of the first branch;
determining theoretical impedance of each first branch based on theoretical flow of each first branch and each second branch, actual impedance of each branch, and each independent loop pressure balance equation;
and sequentially calculating multiple groups of transition flow of each branch according to the directions from far to near from the heat source based on the pressure balance equations of each independent loop and the theoretical impedance of each first branch.
By adopting the technical scheme, the electronic equipment calculates to obtain actual impedance according to the obtained differential pressure information and flow information of each branch, determines the theoretical flow of the first branch according to the house information of the building, and further calculates the theoretical flow of each second branch according to the node flow equation and the theoretical flow of the first branch, so that the theoretical impedance of each building is determined according to the theoretical flow, the actual impedance and the pressure balance equation of each independent loop of each branch, and further, the multiple groups of transition flows of each branch can be sequentially calculated according to the theoretical impedance.
Optionally, the determining the theoretical flow rate of each first branch based on the building information of the building includes:
calculating the heating area of the building based on the area of each house type and the number of users of each house type;
calculating to obtain the initial flow of a first branch where the building is located based on a preset heating heat index, a preset water supply and return temperature difference and the heating area of the building;
calculating the total heat loss of each first branch based on the temperature information of the heat source and the distance between the building and the heat source;
calculating the flow increment of the corresponding first branch based on the total heat loss of the first branch;
and calculating theoretical flow of each first branch based on the initial flow and the flow increment of each first branch.
By adopting the technical scheme, when the theoretical flow of the branch where the building is located is determined according to the house information of the building, the electronic equipment firstly calculates the heating area in the building, calculates the initial flow when the temperature in the building reaches the preset temperature according to the flow required by temperature rise of each unit area and the heating area, and calculates the flow increment by considering the heat loss, so that the theoretical flow of the first branch is calculated according to the initial flow and the flow increment, the theoretical flow is calculated more comprehensively and accurately, and the estimation efficiency is improved.
Further, the obtaining of the pump head information includes;
acquiring first flow rate information and first water pressure information at an inlet of a water pump;
acquiring second flow rate information and second water pressure information at the outlet of the water pump;
acquiring distance information between a position where the first water pressure information is measured and a position where the second water pressure information is measured;
and calculating to obtain water pump head information based on the first flow rate information, the second flow rate information, the first water pressure information, the second water pressure information and the distance information.
By adopting the technical scheme, the electronic equipment calculates the water pump lift information according to the calculation formula according to the pressure difference, the flow information and the like of the water pump.
Further, the determining the theoretical impedance of each first branch based on the theoretical flow of each first branch and each second branch, the actual impedance of each branch, and the pressure balance equation of each independent loop comprises:
determining any one of the buildings as a current building, and determining an independent loop pressure balance equation corresponding to the current building;
and substituting the theoretical flow of each first branch and each second branch and the actual impedance of other branches except the first branch where the current building is located into an independent loop pressure balance equation corresponding to the current building, and calculating to obtain the theoretical impedance of the first branch where the current building is located. By adopting the technical scheme, the electronic equipment substitutes the theoretical flow of each branch and the actual impedance of other branches into the independent loop pressure balance equation to calculate and obtain the theoretical impedance corresponding to the current building.
In another possible implementation manner, a virtual valve is disposed on a first branch in the pipe network model, and the method further includes:
determining the resistance required by the regulating valve based on the theoretical flow of each building and the actual impedance of each branch;
determining a desired impedance of the valve located on the first branch based on the theoretical flow of each first branch and the actual impedance of each branch;
determining the theoretical opening of the valve corresponding to the required impedance of the valve based on the resistance and opening characteristic curve of the valve;
adjusting the opening degree of the virtual valve to a corresponding theoretical opening degree;
when the virtual valve is adjusted to the theoretical opening degree, determining the simulated flow of each first branch;
judging whether the simulated flow of each first branch is the same as the corresponding theoretical flow; if yes, displaying the actual temperature;
otherwise, generating feedback information.
By adopting the technical scheme, the electronic equipment determines the resistance required by the regulating valve according to the theoretical flow of each building and the actual impedance of each branch, determines the opening of each valve according to the resistance and the opening characteristic curve of the valve, and further determines whether the temperature of each building reaches the required temperature or not according to the flow of each first branch when the valve in the simulation pipeline is regulated to the corresponding opening, so that the accuracy of flow regulation can be verified.
In a second aspect, the present application provides a heating pipe network regulation and control device based on simulation, which adopts the following technical scheme:
the system comprises a first acquisition module, a second acquisition module and a pipeline network model, wherein the first acquisition module is used for acquiring operation information of a user based on pipeline network drawing information and establishing a pipeline network model, the pipeline network model comprises a heat source and a plurality of buildings and also comprises a plurality of branches connected between the heat source and the buildings, the branches comprise a first branch where each building is located and a second branch connecting the heat source with each building, and the pipeline network model also comprises nodes intersected by two adjacent branches;
the second acquisition module is used for acquiring temperature information at the heat source, temperature information of each branch and the node, pressure difference information and flow information of each branch, and displaying the temperature information, the pressure difference information and the flow information at corresponding positions of the pipe network model;
the pipe network analysis graph establishing module is used for establishing a pipe network analysis graph based on the pipe network model, and enabling the pipe network analysis graph to correspond to the temperature information, the pressure difference information and the flow information of each position of the pipe network model one by one;
the transition flow determining module is used for performing simulation analysis based on a pipe network analysis diagram and determining the transition flow of each first branch;
and the generation module is used for generating operation guidance information so that a user can adjust the flow of each building to the transition flow in turn according to the operation guidance information.
By adopting the technical scheme, the first acquisition module acquires operation information of a user so as to establish a pipe network model consistent with drawing information, the second acquisition module acquires temperature information, pressure difference information and flow information of each position of a pipe network, the information is displayed and calculation is carried out according to the data, the pipe network analysis graph establishment module establishes a pipe network analysis graph according to the pipe network model, the transition flow determination module determines the transition flow of each first branch according to the temperature information, the pressure difference information and the flow information of each branch in the pipe network analysis graph, the generation module generates operation guide information according to each transition flow, and the user adjusts the flow of each building according to the operation guide information so as to realize quick and accurate adjustment.
Further, the transition flow rate determination module is specifically configured to:
acquiring water pump lift information and house information of each building;
calculating actual impedance of each branch based on the differential pressure information, the flow information and a related calculation formula of each branch;
determining theoretical flow of each first branch based on the house information of the building;
determining a pressure balance equation and a node flow equation of a plurality of independent loops based on a pipe network analysis graph;
calculating to obtain the theoretical flow of each second branch based on the node flow equation and the theoretical flow of the first branch;
determining theoretical impedance of each first branch based on theoretical flow of each first branch and each second branch, actual impedance of each branch, and each independent loop pressure balance equation;
and sequentially calculating multiple groups of transition flow of each branch according to the directions from far to near from the heat source based on the pressure balance equations of each independent loop and the theoretical impedance of each first branch.
Further, the transitional flow rate determination module, when determining the theoretical flow rate of each first branch based on the building information of the building, is specifically configured to:
calculating to obtain the heating area of the building based on the area of each house type and the number of users of each house type;
calculating to obtain the initial flow of a first branch where the building is located based on a preset heating heat index, a preset water supply and return temperature difference and the heating area of the building;
calculating the total heat loss of each first branch based on the temperature information of the heat source and the distance between the building and the heat source;
calculating the flow increment of the corresponding first branch based on the total heat loss of the first branch;
and calculating theoretical flow of each first branch based on the initial flow and the flow increment of each first branch.
Further, when acquiring the pump lift information, the transition flow determination module is specifically configured to:
acquiring first flow rate information and first water pressure information at an inlet of a water pump;
acquiring second flow rate information and second water pressure information at the outlet of the water pump;
acquiring distance information between a position where the first water pressure information is measured and a position where the second water pressure information is measured;
and calculating to obtain water pump lift information based on the first flow rate information, the second flow rate information, the first water pressure information, the second water pressure information and the distance information.
Further, the transition flow rate determination module, when determining the theoretical impedance of each first branch based on the theoretical flow rate of each first branch and each second branch, the actual impedance of each branch, and the pressure balance equation of each independent loop, is specifically configured to:
determining any one of the buildings as a current building, and determining an independent loop pressure balance equation corresponding to the current building;
and substituting the theoretical flow of each first branch and each second branch and the actual impedance of other branches except the first branch where the current building is located into an independent loop pressure balance equation corresponding to the current building, and calculating to obtain the theoretical impedance of the first branch where the current building is located.
In another possible implementation manner, a virtual valve is arranged on a first branch in the pipe network model, and the heat supply pipe network regulation and control device based on simulation further includes:
the valve required impedance determining module is used for determining the required impedance of the valve on the first branch based on the theoretical flow of each first branch and the actual impedance of each branch;
the valve theoretical opening determining module is used for determining the theoretical opening of the valve corresponding to the impedance required by the valve based on the impedance and the opening characteristic curve of the valve;
the adjusting module is used for adjusting the opening of the virtual valve to a corresponding theoretical opening;
the simulated flow determining module is used for determining the simulated flow of each first branch when the virtual valve is adjusted to the theoretical opening degree;
the judging module is used for judging whether the simulated flow of each first branch is the same as the corresponding theoretical flow;
the temperature display module is used for displaying the actual temperature when the judgment module judges that the temperature is positive;
and the feedback information generating module is used for generating feedback information when the judging module judges that the feedback information is not generated.
In a third aspect, the present application provides an electronic device, which adopts the following technical solutions:
an electronic device, comprising:
at least one processor;
a memory;
at least one application, wherein the at least one application is stored in the memory and configured to be executed by the at least one processor, the at least one application configured to: executing the heat supply pipeline network regulation and control method based on simulation in any one of the first aspect.
By adopting the technical scheme, the processor loads and executes the application program stored in the memory to obtain the operation information of the user, so that a pipe network model consistent with the drawing information is established, the temperature information, the pressure difference information and the flow information of each position of the pipe network are obtained, the information is displayed and simultaneously calculation is carried out according to the data, a pipe network analysis diagram is established according to the pipe network model, the transition flow of each first branch is determined according to the temperature information, the pressure difference information and the flow information of each branch in the pipe network analysis diagram, operation guide information is generated according to each transition flow, and the user adjusts the flow of each building according to the operation guide information to realize quick and accurate adjustment.
In a fourth aspect, the present application provides a computer-readable storage medium, which adopts the following technical solutions:
a computer readable storage medium storing a computer program capable of being loaded by a processor and executing a method for regulating and controlling a heating network based on simulation according to any one of the first aspect.
By adopting the technical scheme, the processor loads and executes the application program stored in the computer readable storage medium to obtain the operation information of the user, so that a pipe network model consistent with drawing information is established, the temperature information, the pressure difference information and the flow information of each position of a pipe network are obtained, calculation is carried out according to the data while the information is displayed, a pipe network analysis graph is established according to the pipe network model, the transition flow of each first branch is determined according to the temperature information, the pressure difference information and the flow information of each branch in the pipe network analysis graph, operation guide information is generated according to each transition flow, the user adjusts the flow of each building according to the operation guide information, and quick and accurate adjustment is realized.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the method comprises the steps that an electronic device obtains operation information of a user, so that a pipe network model consistent with drawing information is established, the electronic device obtains temperature information, pressure difference information and flow information of each position of a pipe network, the information is displayed and meanwhile calculation is carried out according to the data, the electronic device establishes a pipe network analysis graph according to the pipe network model, transition flow of each first branch is determined according to the temperature information, the pressure difference information and the flow information of each branch in the pipe network analysis graph, then the electronic device generates operation guide information according to the transition flow, and the user adjusts the flow of each building according to the operation guide information, so that rapid and accurate adjustment is achieved;
2. when the theoretical flow of the branch where the building is located is determined according to the building information of the building, the electronic equipment calculates the theoretical flow of the first branch by considering the heat loss and the building area, calculates the theoretical flow more comprehensively and accurately, and improves the estimation efficiency.
Drawings
Fig. 1 is a schematic flow chart of a heating pipe network regulation and control method based on simulation in the embodiment of the present application.
Fig. 2 is a schematic diagram of an analysis diagram of a pipe network in the embodiment of the present application.
Fig. 3 is a block diagram of a heating pipe network regulation and control device based on simulation in the embodiment of the present application.
Fig. 4 is a block diagram of the electronic device in the embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In addition, the term "and/or" herein is only one kind of association relationship describing an associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship, unless otherwise specified.
The embodiment of the application discloses a heating pipe network regulation and control method based on simulation. Referring to fig. 1, the electronic device executes the steps of (step S101 to step S105):
step S101: the method comprises the steps of obtaining operation information of a user based on pipe network drawing information, and establishing a pipe network model, wherein the pipe network model comprises a heat source, a plurality of buildings and a plurality of branches connected between the heat source and each building, the branches comprise a first branch where each building is located and a second branch connecting the heat source with each building, and the pipe network model further comprises nodes where two adjacent branches intersect.
Specifically, a user inputs operation information on an interface of the electronic device according to the position and the trend of the heating pipe in the pipe network drawing information, and the electronic device establishes a pipe network model based on the operation information of the user.
In order to quickly input pipe network information, a user names each pipeline branch in a pipe network model, makes pipe diameter information and the like in a pipe network drawing into an execl table, reads data in the table by electronic equipment, determines the pipe diameter corresponding to each pipeline, adjusts the pipe diameter in the pipe network model, and realizes quick generation of the pipe network model.
Furthermore, the pipe network model comprises a heat exchange station and a plurality of buildings, the electronic equipment determines the actual geographic positions of the heat exchange station and the buildings based on the GIS system, converts the actual geographic positions into virtual position information in the simulation environment according to a certain proportion, and determines the positions of the heat exchange station and the buildings in the pipe network model according to the virtual position information.
Step S102: and acquiring temperature information of each branch and a node, differential pressure information and flow information of each branch, and displaying the temperature information, the differential pressure information and the flow information at corresponding positions of the pipe network model.
Specifically, temperature, pressure difference and flow monitoring equipment is installed on a water supply and return pipeline of the heat exchange station, a water supply and return pipeline of each building and each node, each monitoring equipment is in remote communication with electronic equipment through an NB-IOT network, and the electronic equipment can acquire temperature information, pressure difference information and flow information of the heat exchange station, the buildings and the nodes.
After the electronic equipment acquires the temperature information, the pressure difference information and the flow information of the heat exchange station and the building, the electronic equipment displays the temperature information, the pressure difference information and the flow information at the corresponding positions of the pipe network model.
In order to verify the accuracy of the establishment of the pipe network model, the electronic equipment is based on a heat flow coupling principle, on one hand, the pressure distribution of a pipeline is calculated according to a resistance drop formula of a pipe network, on the other hand, the temperature information of a building is calculated according to the heat transfer mechanism and the temperature information, the pressure difference information and the flow information of a heat supply station, the actually measured temperature information is compared with the calculated temperature information, and when the error value is within a preset value, the accuracy of the pipe network model is higher; and when the error is large, generating alarm information to prompt a user to check whether the pipeline is abnormal or the instrument is abnormal.
Specifically, the upper drag drop formula is
Pa。
Wherein:
R=6.88×10 -3 K 0.25 
Pa/m；
ld=9.1
m；
r-loss along the way per meter of pipe length (i.e. specific friction), pa/m;
k-equivalent absolute roughness of the tube wall, m; for hot water network, take K =0.5x10 -3 mm；
d-the internal diameter of the pipe, m;
rho-density of water, kg/m3;
l-actual length of pipe, m;
specifically, the electronic device calculates the differential pressure information of each branch through a resistance drop formula according to the differential pressure information at the heat exchange station, the length of the pipeline branch, the inner diameter of the pipeline and other information.
Further, the heat exchange between the hot water pipeline and the outside is equal to the heat released by the medium in the micro-element pipe section, and the following differential equation is provided:
wherein:
D, the outer diameter of the pipeline, m;
t-medium temperature, deg.C;
l-the actual length of the pipe, m;
g-mass flow of medium, kg/s;
c-specific heat capacity of medium, J/kg ℃;
calculated by the differential equation
For the released heat, the electronic device calculates the released heat of each branch according to the differential equation and the pipeline length of each branch, and further calculates the temperature of each building according to the released heat.
Step S103: and establishing a pipe network analysis diagram based on the pipe network model, and enabling the pipe network analysis diagram to correspond to the temperature information, the pressure difference information and the flow information of each position of the pipe network model one by one.
Specifically, the electronic device simplifies the pipe network model to obtain a pipe network analysis diagram.
In the application, 4 users are taken as an example to obtain a pipe network analysis diagram as shown in fig. 2. The pipe network analysis diagram comprises a heat source, a first branch where each user is located, a second branch connecting the heat source with each building, and a node where two adjacent branches intersect, wherein a valve entering the building is arranged on the first branch.
Wherein, 1-7 are all branches of the analysis diagram of the pipe network, wherein, 1 and 2 are first branches, 3-7 are second branches, and (1) - (6) are nodes.
Further, the electronic equipment corresponds the temperature information, the pressure difference information and the flow information of each position on the pipe network model to the corresponding positions of the pipe network analysis graph one by one.
Step S104: performing simulation analysis based on the pipe network analysis diagram to determine the transition flow of each first branch, including (step S1041-step S1047):
step S1041: and acquiring water pump lift information and house information of each building.
Specifically, step S1041 includes: acquiring first flow information and first water pressure information at an inlet of a water pump; acquiring second flow information and second water pressure information at the outlet of the water pump; acquiring distance information between a position for measuring the first water pressure information and a position for measuring the second water pressure information; and calculating to obtain water pump head information based on the first flow information, the second flow information, the first water pressure information, the second water pressure information and the distance information.
To obtain pump head information, the userAnd a pressure gauge and a flow meter are arranged at the inlet of the water pump, a pressure gauge and a flow meter are arranged at the outlet of the water pump, and the pressure gauge and the flow meter are in wireless communication with the electronic equipment. The electronic equipment obtains first water pressure information according to a pressure gauge at the inlet of the water pump
Obtaining first flow rate information according to a flowmeter at the inlet of the water pump, and obtaining second water pressure information according to a pressure gauge at the outlet of the water pump
Obtaining second flow rate information according to the flow meter at the outlet of the water pump
The height of the pressure gauge at the inlet of the water pump is recorded and input by the staff
And the height of the pressure gauge at the outlet
The electronic device is according to the formula:
and calculating to obtain the water pump lift H.
Further, the house information of the building comprises the area of each house type in the building, the number of users of each house type and the distance between the building and a heat source, the users examine the actual situation of the building, and input various items of information of the building into the electronic equipment, and the electronic equipment acquires the house information of the building.
Step S1042: and calculating the actual impedance of each branch based on the pressure difference information, the flow information and the related calculation formula of each branch.
Specifically, the relationship between impedance and differential pressure and flow is:
。
wherein,
for differential pressure, Q is flow, and S is branch impedance. The electronic equipment calculates the actual impedance of each branch
。
Step S1043: and determining theoretical flow of each first branch based on the house information of the building.
Specifically, when the flow rate of the first branch reaches the theoretical flow rate, the temperature of the building can reach the preset temperature, and the electronic device calculates the theoretical flow rate according to the relevant information of the building and the preset temperature, including (step S11)
Step S15):
step S11: and calculating the heating area of the building based on the area of each house type and the number of users of each house type.
Specifically, the electronic device multiplies the area of each house type by the number of users of each house type to obtain the total area corresponding to each house type, and then adds the total areas corresponding to the various house types to obtain the heating area of each building.
Step S12: and calculating to obtain the initial flow of the first branch where the building is located based on a preset heating heat index, a preset water supply and return temperature difference and the heating area of the building.
Specifically, the flow and the heat load are related to the temperature difference between the supplied water and the returned water,
wherein Q is the flow rate, G is the thermal load,
q is a heating heat index, S is a heating area,
for supplying and returning water temperature difference. The heating heat index and the temperature difference of the water supply and return are preset according to local requirements, so that the electronic equipment can calculate the initial flow of the first branch
。
Step S13: and calculating the total heat loss of each first branch based on the temperature information of the heat source and the distance between the building and the heat source.
Specifically, the electronics acquire the length of the pipe between each building and the heat source
Water temperature in the heat source pipeline
Ambient air temperature
Diameter of the pipe
By passing
Is calculated to obtain
，
The reduced temperature of the hot water in the current building pipeline is further based on
Calculating to obtain the total heat loss of each building
。
Step S14: the corresponding flow increment of the first branch is calculated based on the total heat loss of the first branch.
Specifically, the electronic device is based on a formula
Calculating to obtain the flow increment
。
Step S15: and calculating the theoretical flow of each first branch based on the initial flow and the flow increment of each first branch.
In particular, the theoretical flow Q = of the first branch
+
So that the temperature of the building reaches the preset temperature. The electronic device therefore obtains the theoretical flow of each first branch
-L(i=1～2)。
Step S1044: and determining an independent loop pressure balance equation and a node flow equation corresponding to each building based on the pipe network analysis graph.
Specifically, according to the constant flow process of the pipe network, the algebraic sum of the pressure drops of all branch pipe sections is equal to zero along the direction of the loop in any loop.
According to the principle of conservation of mass, in a constant flow process, the algebraic sum of the flows of all the branches associated with any one node is equal to zero.
Step S1045: and calculating to obtain the theoretical flow of each second branch based on the pump head information, the node flow equation and the theoretical flow of the first branch.
For example, taking the node (6) as a reference node, the node flow balance equation is as follows:
therein, it is known
And
and is made of
= H, the electronic device can calculate the theoretical flow rate of each second branch
（i=3～6）。
Step S1046: determining a theoretical impedance independent loop pressure balance equation of each first branch based on the theoretical flow of each first branch and each second branch, the actual impedance of each branch and each independent loop pressure balance equation, wherein the method comprises the following steps of (Sa-Sc):
step Sa: and determining any one of the buildings as the current building, and determining an independent loop pressure balance equation corresponding to the current building.
For example, the electronic device determines that building 1 is the current building, determines the independent loop matrix:
；
independent loop pressure balance equations:
step Sc: and substituting the theoretical flow of each first branch and each second branch and the actual impedance of other branches except the first branch where the current building is located into an independent loop pressure balance equation corresponding to the current building, and calculating to obtain the theoretical impedance of the first branch where the current building is located.
For example, if the branch 1 of the building 1 is currently located, the electronic device will calculate the theoretical flow rates
Actual impedance of branches other than the current building
And actual flow rate
And substituting the voltage into an independent loop pressure balance equation to calculate the theoretical impedance of the current building 1
. By analogy, the theoretical impedance of the building 2 is obtained
。
Step S1047: and sequentially calculating multiple groups of transition flow of each branch according to the directions from far to near from the heat source based on the pressure balance equation of each independent loop and the theoretical impedance of each first branch.
For example, the electronics generate the independent loop pressure balance equation set by first matching the theoretical impedance of building 2
Substituting the pressure balance equation system of the independent loop into the pressure balance equation system of the independent loop to obtain:
calculating to obtain a first group of transition flow groups
（i=1~7）。
Further, the electronic equipment makes the theoretical impedance of the buildings 1 and 2
、
Substituting the pressure balance equation set of the independent loop into the pressure balance equation set of the independent loop to obtain a second group of transition flow sets through calculation
(i = 1-7), when the theoretical impedances of all the first branches are substituted into the independent loop pressure balance equation system, the transient flow calculated by the electronic device is the theoretical flow, and for the example in this application,
（i=1～7）=
（i=1～7）。
step S105: and generating operation guide information for guiding the user to adjust the flow of each first branch to the transition flow.
Specifically, the operation guidance information includes an operation sequence, an operation position, and a corresponding transition flow rate of the user. For example, the electronic device generates operation guidance information: firstly, the valve of the building 2 is adjusted to make the flow of the first branch 2 reach the transition flow
B, carrying out the following steps of; secondly, the valve of the building 1 is adjusted to make the flow of the first branch 1 reach the transition flow
。
When the staff adjusts the valve according to the operation guidance information, whether the transition flow is reached is determined by observing the flow meter on the first branch, and when the operation guidance information content is finished, the respective theoretical flows are reached on the buildings 1 and 2.
When the user is adjusting the valve on the first branch, whether the valve is in place can also be determined by observing the opening degree of the valve, and in another possible implementation manner, the method further includes (step S21 to step S27):
step S21: the desired impedance of the valve located on the first branch is determined based on the theoretical flow of each first branch and the actual impedance of each branch.
In particular, the valve in each first branch is used to increase or decrease the resistance to the flow of water in the pipe, so that the user can adjust the valve to bring the actual impedance of the first branch to the theoretical impedance. Regulating valve required impedance S-t =
）-
）。
Step S22: and determining the theoretical opening of the valve corresponding to the required impedance of the valve based on the impedance of the valve and the opening characteristic curve.
Specifically, each valve has a characteristic curve relating to impedance and opening, and the electronic device obtains a corresponding theoretical opening according to an impedance query.
Step S23: and adjusting the opening degree of the virtual valve to the corresponding theoretical opening degree.
Step S24: when the virtual valve is adjusted to the theoretical opening, determining the simulated flow of each first branch;
specifically, after the electronic device changes the valve opening in the pipe network model, the pipe network model automatically simulates the flow condition of the water supply, so that the simulated flow of each first branch is obtained.
Step S25: judging whether the analog flow of each first branch is the same as the corresponding theoretical flow; if yes, go to step S26: displaying the actual temperature; otherwise, step S27 is executed: feedback information is generated.
Specifically, when the simulated flow of the first branch in the pipe network model is equal to the theoretical flow, the correctness of the regulation is verified, and the actual temperature is displayed; if the deviation is large, feedback information is generated to prompt that the pipe network possibly fails.
In order to better perform the method, the embodiment of the present application further provides an artificial simulation-based heating pipe network regulation and control device, referring to fig. 3, the artificial simulation-based heating pipe network regulation and control device 200 includes:
the first acquisition module 201 is used for acquiring operation information of a user based on pipe network drawing information and establishing a pipe network model, wherein the pipe network model comprises a heat source and a plurality of buildings and also comprises a plurality of branches connected between the heat source and each building, the branches comprise a first branch where each building is located and a second branch connecting the heat source and each building, and the pipe network model also comprises nodes intersected by two adjacent branches;
the second obtaining module 202 is configured to obtain temperature information at a heat source, temperature information of each branch and a node, pressure difference information of each branch, and flow information, and display each temperature information, pressure difference information, and flow information at a corresponding position of the pipe network model;
the pipe network analysis graph establishing module 203 is used for establishing a pipe network analysis graph based on a pipe network model, and enabling the pipe network analysis graph to correspond to temperature information, pressure difference information and flow information of each position of the pipe network model one by one;
the transition flow determining module 204 is configured to perform simulation analysis based on the pipe network analysis graph, and determine the transition flow of each first branch;
a generating module 205, configured to generate operation guidance information for guiding a user to adjust the flow of each of the first branches to the transition flow.
Further, the transition flow determining module 204 is specifically configured to:
acquiring water pump lift information and house information of each building;
calculating to obtain the actual impedance of each branch based on the differential pressure information, the flow information and the related calculation formula of each branch;
determining theoretical flow of each first branch based on the house information of the building;
determining a plurality of independent loop pressure balance equations and node flow equations based on a pipe network analysis graph;
calculating theoretical flow of each second branch based on a node flow equation and the theoretical flow of the first branch;
determining theoretical impedance of each first branch based on theoretical flow of each first branch and each second branch, actual impedance of each branch and pressure balance equation of each independent loop;
and sequentially calculating multiple groups of transition flow of each branch according to the directions from far to near from the heat source based on the pressure balance equation of each independent loop and the theoretical impedance of each first branch.
Further, the transitional flow rate determination module 204, when determining the theoretical flow rate of each first branch based on the building information of the building, is specifically configured to:
calculating to obtain the heating area of the building based on the area of each house type and the number of users of each house type;
calculating to obtain the initial flow of a first branch where the building is located based on a preset heating heat index, a preset water supply and return temperature difference and the heating area of the building;
calculating the total heat loss of each first branch based on the temperature information of the heat source and the distance between the building and the heat source;
calculating the flow increment of the corresponding first branch based on the total heat loss of the first branch;
and calculating theoretical flow of each first branch based on the initial flow and the flow increment of each first branch.
Further, when the transition flow determining module 204 obtains the pump head information, it is specifically configured to:
acquiring first flow rate information and first water pressure information at an inlet of a water pump;
acquiring second flow rate information and second water pressure information at the outlet of the water pump;
acquiring distance information between a position for measuring the first water pressure information and a position for measuring the second water pressure information;
and calculating to obtain water pump lift information based on the first flow rate information, the second flow rate information, the first water pressure information, the second water pressure information and the distance information.
Further, the transitional flow determination module 204, when determining the theoretical impedance of each first branch based on the theoretical flow of each first branch and each second branch, the actual impedance of each branch, and each independent loop pressure balance equation, is specifically configured to:
determining any one of the buildings as the current building, and determining an independent loop pressure balance equation corresponding to the current building;
and substituting the theoretical flow of each first branch and each second branch and the actual impedance of other branches except the first branch where the current building is located into an independent loop pressure balance equation corresponding to the current building, and calculating to obtain the theoretical impedance of the first branch where the current building is located.
In another possible implementation manner, a virtual valve is disposed on the first branch in the pipe network model, and the heat supply pipe network regulation and control device 200 further includes:
the valve required impedance determining module is used for determining the required impedance of the valve on each first branch based on the theoretical flow of each first branch and the actual impedance of each branch;
the valve theoretical opening determining module is used for determining the theoretical opening of the valve corresponding to the impedance required by the valve based on the impedance and the opening characteristic curve of the valve;
the adjusting module is used for adjusting the opening of the virtual valve to a corresponding theoretical opening;
the simulated flow determining module is used for determining the simulated flow of each first branch when the virtual valve is adjusted to the theoretical opening degree;
the judging module is used for judging whether the analog flow of each first branch is the same as the corresponding theoretical flow;
the temperature display module is used for displaying the actual temperature when the judgment module judges that the temperature is positive;
and the feedback information generation module is used for generating feedback information when the judgment module judges that the feedback information is negative.
Various changes and specific examples in the method in the foregoing embodiment are also applicable to the artificial simulation-based heating pipe network regulation and control device in this embodiment, and through the foregoing detailed description of the artificial simulation-based heating pipe network regulation and control method, those skilled in the art can clearly know the implementation method of the artificial simulation-based heating pipe network regulation and control device in this embodiment, so for the sake of brevity of the description, detailed description is not provided here.
In order to better implement the above method, an embodiment of the present application provides an electronic device, and referring to fig. 4, the electronic device 300 includes: a controller 301, a memory 303, and a display screen 305. The memory 303 and the display 305 are connected to the controller 301, such as via the bus 302. Optionally, the electronic device 300 may also include a transceiver 304. It should be noted that the transceiver 304 is not limited to one in practical applications, and the structure of the electronic device 300 is not limited to the embodiment of the present application.
The controller 301 may be a CPU (Central Processing Unit), a general-purpose Processor, a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array) or other Programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The communications board 301 may also be a combination of components that perform computing functions, including for example, one or more microprocessor combinations, DSP and microprocessor combinations, and the like.
The Memory 303 may be a ROM (Read Only Memory) or other type of static storage device that can store static information and instructions, a RAM (Random Access Memory) or other type of dynamic storage device that can store information and instructions, an EEPROM (Electrically Erasable Programmable Read Only Memory), a CD-ROM (Compact Disc Read Only Memory) or other optical Disc storage, optical Disc storage (including Compact Disc, laser Disc, optical Disc, digital versatile Disc, blu-ray Disc, etc.), a magnetic Disc storage medium or other magnetic storage device, 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 to these.
The memory 303 is used for storing application program codes for executing the scheme of the application, and the execution is controlled by the controller 301. The controller 301 is configured to execute application program code stored in the memory 303 to implement the aspects shown in the foregoing method embodiments.
The electronic device 300 shown in fig. 4 is only an example, and should not bring any limitation to the functions and the scope of use of the embodiments of the present application.
The embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored, and the computer program is executed by a processor to implement the method for regulating and controlling a heating network based on simulation provided by the embodiment, where the processor loads and executes the computer program stored in the computer-readable storage medium to obtain operation information of a user, thereby establishing a pipe network model consistent with drawing information, and obtaining temperature information, pressure difference information, and flow information of each position of a pipe network, and while displaying the information, the processor performs calculation according to the data, establishes a pipe network analysis diagram according to the pipe network model, and determines a transition flow of each first branch according to the temperature information, the pressure difference information, and the flow information of each branch in the pipe network analysis diagram, and further generates operation guidance information according to each transition flow, so that the user adjusts the flow of each building according to the operation guidance information, thereby implementing quick and accurate adjustment.
In this embodiment, the computer-readable storage medium may be a tangible device that holds and stores instructions for use by an instruction execution device. The computer readable storage medium may be, but is not limited to, an electronic memory device, a magnetic memory device, an optical memory device, an electromagnetic memory device, a semiconductor memory device, or any combination of the foregoing. In particular, the computer readable storage medium may be a portable computer diskette, a hard disk, a U-disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a podium random access memory (SRAM), a portable compact disc read-only memory (CD-ROM), a Digital Versatile Disc (DVD), a memory stick, a floppy disk, an optical disk, a magnetic disk, a mechanical coding device, and any combination thereof.
The computer program in the present embodiment includes a program code for executing all the methods described above, and the program code may include instructions corresponding to the method steps provided in the foregoing embodiments. The computer program may be downloaded to the respective computing/processing device from a computer-readable storage medium, or may be downloaded to an external computer or external storage device via a network, such as the internet, a local area network, a wide area network, and/or a wireless network. The computer program may execute entirely on the user's computer, as a stand-alone software package.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.
In addition, it is to be understood that relational terms such as first and second, and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Claims (9)
1. A heating pipe network regulation and control method based on simulation is characterized by comprising the following steps:
acquiring operation information of a user based on pipe network drawing information, and establishing a pipe network model, wherein the pipe network model comprises a heat source, a plurality of buildings and a plurality of branches connected between the heat source and each building, the branches comprise a first branch where each building is located and a second branch connecting the heat source and each building, and the pipe network model further comprises nodes where two adjacent branches intersect;
acquiring temperature information at the heat source, temperature information at each branch and the node, pressure difference information and flow information of each branch, and displaying the temperature information, the pressure difference information and the flow information at corresponding positions of the pipe network model;
establishing a pipe network analysis graph based on the pipe network model, and enabling the pipe network analysis graph to correspond to the temperature information, the pressure difference information and the flow information of each position of the pipe network model one by one;
performing simulation analysis based on the pipe network analysis diagram to determine the transition flow of each first branch;
and generating operation guide information for guiding the user to adjust the flow of each first branch to the transition flow.
2. The method according to claim 1, wherein the performing a simulation analysis based on the pipe network analysis graph to determine the transitional flow rate of each first branch comprises:
acquiring water pump lift information and house information of each building;
calculating actual impedance of each branch based on the differential pressure information, the flow information and a related calculation formula of each branch;
determining theoretical flow of each first branch based on the house information of the building;
determining a plurality of independent loop pressure balance equations and node flow equations based on the pipe network analysis graph;
calculating theoretical flow of each second branch based on the water pump lift information, the node flow equation and the theoretical flow of the first branch;
determining theoretical impedance of each first branch based on theoretical flow of each first branch and each second branch, actual impedance of each branch, and each independent loop pressure balance equation;
and sequentially calculating multiple groups of transition flow of each branch according to the directions from far to near from the heat source based on the pressure balance equations of each independent loop and the theoretical impedance of each first branch.
3. The method according to claim 2, wherein the building information of the building includes an area of each type of house within the building, a number of users of each type of house, and a distance of the building from a heat source, and the determining the theoretical flow rate of each first branch based on the building information of the building includes:
calculating the heating area of the building based on the area of each house type and the number of users of each house type;
calculating to obtain the initial flow of a first branch where the building is located based on a preset heating heat index, a preset water supply and return temperature difference and the heating area of the building;
calculating the total heat loss of each first branch based on the temperature information of the heat source and the distance between the building and the heat source;
calculating the flow increment of the corresponding first branch based on the total heat loss of the first branch;
and calculating theoretical flow of each first branch based on the initial flow and the flow increment of each first branch.
4. The method of claim 2, wherein the obtaining pump head information comprises;
acquiring first flow rate information and first water pressure information at an inlet of a water pump;
acquiring second flow rate information and second water pressure information at the outlet of the water pump;
acquiring distance information between a position where the first water pressure information is measured and a position where the second water pressure information is measured;
and calculating to obtain water pump head information based on the first flow rate information, the second flow rate information, the first water pressure information, the second water pressure information and the distance information.
5. The method of claim 2, wherein determining the theoretical impedance of each first branch based on the theoretical flow of each first branch and each second branch, the actual impedance of each branch, and the respective independent loop pressure balance equation comprises:
determining any one of the buildings as a current building, and determining an independent loop pressure balance equation corresponding to the current building;
and substituting the theoretical flow of each first branch and each second branch and the actual impedance of other branches except the first branch where the current building is located into an independent loop pressure balance equation corresponding to the current building, and calculating to obtain the theoretical impedance of the first branch where the current building is located.
6. The method according to claim 2 or 5, wherein a virtual valve is arranged on a first branch in the pipe network model, and the method further comprises:
determining a desired impedance of the valve located on the first branch based on the theoretical flow of each first branch and the actual impedance of each branch;
determining the theoretical opening of the valve corresponding to the impedance required by the valve based on the impedance and opening characteristic curve of the valve;
adjusting the opening degree of the virtual valve to a corresponding theoretical opening degree;
when the virtual valve is adjusted to the theoretical opening degree, determining the simulated flow of each first branch;
judging whether the simulated flow of each first branch is the same as the corresponding theoretical flow; if yes, displaying the actual temperature;
otherwise, generating feedback information.
7. The utility model provides a heat supply pipe network regulation and control device based on emulation, its characterized in that includes:
the system comprises a first acquisition module, a second acquisition module and a pipeline network model, wherein the first acquisition module is used for acquiring operation information of a user based on pipeline network drawing information and establishing the pipeline network model, the pipeline network model comprises a heat source and a plurality of buildings and also comprises a plurality of branches connected between the heat source and the buildings, the branches comprise a first branch where each building is located and a second branch connecting the heat source with each building, and the pipeline network model also comprises nodes intersected by two adjacent branches;
the second acquisition module is used for acquiring temperature information, pressure difference information and flow information of each branch and each node of the pipe network and displaying the temperature information, the pressure difference information and the flow information at corresponding positions of the pipe network model;
the pipe network analysis graph establishing module is used for establishing a pipe network analysis graph based on the pipe network model, and enabling the pipe network analysis graph to correspond to the temperature information, the pressure difference information and the flow information of each position of the pipe network model one by one;
the transition flow determining module is used for determining the transition flow of each first branch based on the simulation analysis of the pipe network analysis graph;
and the generating module is used for generating operation guide information for guiding a user to adjust the flow of each first branch to the transition flow.
8. An electronic device, comprising:
at least one processor;
a memory;
at least one application, wherein the at least one application is stored in the memory and configured to be executed by the at least one processor, the at least one application configured to: executing a heating network regulation and control method based on simulation as claimed in any one of claims 1 to 6.
9. A computer-readable storage medium storing a computer program that can be loaded by a processor and used to execute a method according to any one of claims 1 to 6.
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Denomination of invention: Method, device, electronic equipment, and medium for regulating heating pipeline network based on simulation and simulation Granted publication date: 20221220 Pledgee: Shijiazhuang Luquan Rural Commercial Bank Co.,Ltd. Pledgor: BEIJING YUNLU TECHNOLOGY CO.,LTD. Registration number: Y2024980015341 |