CN114321722B - Pressure balancing method and device for steam pipe network, storage medium and processor - Google Patents
Pressure balancing method and device for steam pipe network, storage medium and processor Download PDFInfo
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Abstract
The application discloses a pressure balancing method and device of a steam pipe network, a storage medium and a processor. Wherein the method comprises the following steps: detecting the current operating pressure of a target steam pipe network, and determining a target pipe network grade corresponding to the target steam pipe network, wherein the pipe network grades are different, and the operating pressures of the steam pipe networks are different; determining a pressure operation interval of the steam pipe network corresponding to the target pipe network level; comparing the magnitude relation between the current operating pressure and the extreme value in the pressure operating interval to obtain a comparison result; acquiring the pipe capacity corresponding to the target steam pipe network; determining a pipe capacity gradient corresponding to the target steam pipe network according to the pipe capacity, wherein the pipe capacity gradient is used for indicating the pressure change of the target steam pipe network when the pipe capacity changes along with the time; and adjusting the current operating pressure according to the pipe capacity gradient and the comparison result. The utility model provides a when having solved the pressure fluctuation to steam pipe network and having adjusted, there is the regulation hysteresis, easily causes noise pollution, increases the technical problem of energy consumption and cost.
Description
Technical Field
The application relates to the field of pressure balance of steam pipe networks, in particular to a pressure balance method, a device, a storage medium and a processor of a steam pipe network.
Background
Steam is widely used as secondary energy source in the processes of power generation, heat exchange, heat tracing, mechanical driving, heating, purging and the like, and is the basis of safe, stable and long-period operation of industrial enterprises.
The steam is conveyed to the steam consumption device from the steam production device through the steam pipe network, in order to utilize the steam to the greatest extent, industrial enterprises are generally divided into a plurality of steam pipe networks according to steam pressure grades, and load adjustment is carried out among the steam pipe networks through the temperature and pressure reduction device. Therefore, the relevance of each device is strong, and the adjustment of the processing amount of the device leads to the change of steam consumption, and then leads to the fluctuation of steam pipe network pressure, thereby influencing the change of the steam pressure, the temperature and the steam consumption of other devices. When the pressure of the steam pipe network fluctuates, the time for adjusting the load of the steam-producing boiler is longer, and larger hysteresis exists. When the high steam pressure pipe network is adopted to release pressure to the low steam pressure pipe network, the pressure stability of the low steam pressure pipe network is easily influenced, and even the pressure fluctuation of the multi-stage steam pipe network is caused. When the steam pipe network is emptied for stabilizing the pressure of the steam pipe network, energy is wasted, noise pollution is easy to generate, and meanwhile, energy consumption and cost are increased.
In view of the above problems, no effective solution has been proposed at present.
Disclosure of Invention
The embodiment of the application provides a pressure balancing method, a device, a storage medium and a processor of a steam pipe network, which are used for at least solving the technical problems that when pressure fluctuation of the steam pipe network is regulated, regulation is delayed, noise pollution is easy to cause, and energy consumption and cost are increased.
According to an aspect of the embodiments of the present application, there is provided a pressure balancing method for a steam pipe network, including: detecting the current operating pressure of a target steam pipe network, and determining a target pipe network grade corresponding to the target steam pipe network, wherein the pipe network grades are different, and the operating pressures of the steam pipe networks are different; determining a pressure operation interval of the steam pipe network corresponding to the target pipe network level; comparing the magnitude relation between the current operating pressure and the extreme value in the pressure operating interval to obtain a comparison result; acquiring the pipe capacity corresponding to the target steam pipe network; determining a pipe capacity gradient corresponding to the target steam pipe network according to the pipe capacity, wherein the pipe capacity gradient is used for indicating the pressure change of the target steam pipe network when the pipe capacity changes along with the time; and adjusting the current operating pressure according to the pipe capacity gradient and the comparison result.
Optionally, adjusting the current operating pressure according to the pipe capacity gradient and the comparison result includes: acquiring an adjustment gradient maximum value of the load adjustment device under the condition that the comparison result indicates that the current operation pressure is larger than the maximum value indicated by the pressure operation interval; determining an adjusting parameter according to the maximum value of the adjusting gradient and the gradient of the pipe capacity, wherein the adjusting parameter at least comprises: adjusting the duration, the adjusting sequence, the adjusting distribution amount and the adjusting rate; and controlling the current operating pressure of the target steam pipe network to return to the pressure operating interval within the adjusting duration.
Optionally, adjusting the current operating pressure according to the pipe capacity gradient and the comparison result includes: acquiring an adjustment gradient minimum value of the load adjustment device under the condition that the comparison result indicates that the current operation pressure is smaller than the minimum value indicated by the pressure operation interval; and determining an adjusting parameter according to the minimum value of the adjusting gradient and the gradient of the pipe capacity, wherein the adjusting parameter at least comprises the following components: adjusting the time; and controlling the current operating pressure of the target steam pipe network to return to the pressure operating interval within the adjusting duration.
Optionally, acquiring the tube capacity corresponding to the target steam tube network includes: determining the inner diameter, steam flow rate, length and steam density of each pipe section in a target steam pipe network; determining the steam capacity of each pipe section according to the inner diameter, the steam flow rate, the length and the steam density; the steam capacities of the individual pipe sections are summed to obtain the pipe capacity.
Alternatively, the tube capacity is determined by the following formula:
；
in the method, in the process of the invention,representing the capacity of a j-level steam pipe network; />Representing the pipe section i pipe capacity; di represents the inner diameter of the pipe section i;representing the steam flow rate of pipe section i; />Representing the length of the pipe section i; />Representing the steam density of pipe section i.
Alternatively, the tube volume gradient is determined by the following formula:
；
in the method, in the process of the invention,representing the capacity gradient of the j-level pipeline network management; />The time required for exceeding the steam pipe network operation pressure interval; />Representing the tube volume gradient of tube segment i; />Is the pressure variation of the pressure of the pipe section i along with the steam flow.
Optionally, determining the pressure operation interval of the steam pipe network corresponding to the target pipe network level includes: acquiring historical operation data of a steam pipe network corresponding to a target pipe network grade, wherein the historical operation data at least comprises: pressure operation data; and processing the pressure operation data based on the three-time standard deviation principle to obtain a pressure operation interval.
According to another aspect of the embodiments of the present application, there is also provided a pressure balancing device for a steam pipe network, including: the detection module is used for detecting the current operating pressure of the target steam pipe network and determining the target pipe network grade corresponding to the target steam pipe network, wherein the pipe network grades are different, and the operating pressures of the steam pipe networks are different; the first determining module is used for determining a pressure operation interval of the steam pipe network corresponding to the target pipe network level; the comparison module is used for comparing the magnitude relation between the current operating pressure and the extreme value in the pressure operating interval to obtain a comparison result; the acquisition module is used for acquiring the pipe capacity corresponding to the target steam pipe network; the second determining module is used for determining a pipe capacity gradient corresponding to the target steam pipe network according to the pipe capacity, wherein the pipe capacity gradient is used for indicating the pressure change of the target steam pipe network when the pipe capacity changes along with the time; and the adjusting module is used for adjusting the current running pressure according to the pipe capacity gradient and the comparison result.
According to another aspect of the embodiments of the present application, there is further provided a non-volatile storage medium, where the non-volatile storage medium includes a stored program, and when the program runs, the device where the non-volatile storage medium is controlled to execute any one of the pressure balancing methods of the steam pipe network.
According to another aspect of the embodiments of the present application, there is further provided a processor, configured to execute a program, where the program executes any one of the pressure balancing methods of the steam pipe network during running.
In the embodiment of the application, a mode of gradient adjustment of the pipe capacity is adopted, and the current operating pressure of the target steam pipe network is detected, and the target pipe network grade corresponding to the target steam pipe network is determined; determining a pressure operation interval of the steam pipe network corresponding to the target pipe network level; comparing the magnitude relation between the current operating pressure and the extreme value in the pressure operating interval to obtain a comparison result; acquiring the pipe capacity corresponding to the target steam pipe network; determining a pipe capacity gradient corresponding to the target steam pipe network according to the pipe capacity, wherein the pipe capacity gradient is used for indicating the pressure change of the target steam pipe network when the pipe capacity changes along with the time; the current operating pressure is adjusted according to the pipe capacity gradient and the comparison result, so that the aim of adjusting the operating pressure of the steam pipeline in the shortest time is fulfilled, the pipe network pressure is timely and rapidly adjusted, noise is reduced, the technical effect of energy consumption is saved, and the technical problems that when the pressure fluctuation of the steam pipe network is adjusted, adjustment lag exists, noise pollution is easy to cause, and energy consumption and cost are increased are solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:
FIG. 1 is a schematic flow diagram of an alternative method of pressure equalization of a steam pipe network according to an embodiment of the present application;
FIG. 2 is a schematic flow chart of a steam pipe network pressure balancing method based on pipe capacity gradient according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a steam pipe network pressure balancing device according to an embodiment of the present application;
FIG. 4 is a flow chart illustrating a steam line pressure balance adjustment in accordance with an embodiment of the present application;
fig. 5 is a schematic structural view of an alternative pressure balancing device for steam pipe networks according to an embodiment of the present application.
Detailed Description
In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In accordance with embodiments of the present application, there is provided an embodiment of a method of pressure balancing of a steam pipe network, it being noted that the steps shown in the flow chart of the drawings may be performed in a computer system, such as a set of computer executable instructions, and, although a logical sequence is shown in the flow chart, in some cases, the steps shown or described may be performed in a different order than that shown herein.
FIG. 1 is a pressure balancing method for a steam pipe network according to an embodiment of the present application, as shown in FIG. 1, comprising the steps of:
step S102, detecting the current operating pressure of a target steam pipe network, and determining a target pipe network grade corresponding to the target steam pipe network, wherein the pipe network grades are different, and the operating pressures of the steam pipe networks are different;
step S104, determining a pressure operation interval of the steam pipe network corresponding to the target pipe network level;
step S106, comparing the magnitude relation between the current operation pressure and the extreme value in the pressure operation interval to obtain a comparison result;
step S108, obtaining the pipe capacity corresponding to the target steam pipe network;
step S110, determining a pipe capacity gradient corresponding to the target steam pipe network according to the pipe capacity, wherein the pipe capacity gradient is used for indicating the pressure change of the target steam pipe network when the pipe capacity changes along with the time;
and step S112, adjusting the current operating pressure according to the pipe capacity gradient and the comparison result.
In the pressure balancing method of the steam pipe network, the current operating pressure of the target steam pipe network is detected, and the target pipe network grade corresponding to the target steam pipe network is determined, wherein the pipe network grades are different, and the operating pressures of the steam pipe networks are different; determining a pressure operation interval of the steam pipe network corresponding to the target pipe network level; comparing the magnitude relation between the current operating pressure and the extreme value in the pressure operating interval to obtain a comparison result; acquiring the pipe capacity corresponding to the target steam pipe network; determining a pipe capacity gradient corresponding to the target steam pipe network according to the pipe capacity, wherein the pipe capacity gradient is used for indicating the pressure change of the target steam pipe network when the pipe capacity changes along with the time; the current operating pressure is adjusted according to the pipe capacity gradient and the comparison result, so that the aim of adjusting the operating pressure of the steam pipeline in the shortest time is fulfilled, the pipe network pressure is timely and rapidly adjusted, noise is reduced, the technical effect of energy consumption is saved, and the technical problems that when the pressure fluctuation of the steam pipe network is adjusted, adjustment lag exists, noise pollution is easy to cause, and energy consumption and cost are increased are solved.
In some embodiments of the present application, adjusting the current operating pressure based on the pipe capacity gradient and the comparison result includes: acquiring an adjustment gradient maximum value of the load adjustment device under the condition that the comparison result indicates that the current operation pressure is larger than the maximum value indicated by the pressure operation interval; determining an adjusting parameter according to the maximum value of the adjusting gradient and the gradient of the pipe capacity, wherein the adjusting parameter at least comprises: adjusting the duration, the adjusting sequence, the adjusting distribution amount and the adjusting rate; and controlling the current operating pressure of the target steam pipe network to return to the pressure operating interval within the adjusting duration.
In further alternative embodiments of the present application, adjusting the current operating pressure based on the tube volume gradient and the comparison result includes: acquiring an adjustment gradient minimum value of the load adjustment device under the condition that the comparison result indicates that the current operation pressure is smaller than the minimum value indicated by the pressure operation interval; and determining an adjusting parameter according to the minimum value of the adjusting gradient and the gradient of the pipe capacity, wherein the adjusting parameter at least comprises the following components: adjusting the duration, the adjusting sequence, the adjusting distribution amount and the adjusting rate; and controlling the current operating pressure of the target steam pipe network to return to the pressure operating interval within the adjusting duration.
According to the steam pipe network pressure balancing method based on the pipe capacity gradient, the pipe network operation state can be obtained through real-time simulation of the steam pipe network, the time required for adjustment is calculated based on the pipe network capacity gradient threshold value, the load adjustment sequence, the adjustment distribution amount and the adjustment rate of the steam load adjusting device are output to a dispatcher, the steam pipe network pressure fluctuation caused by the adjustment of the processing amount of the device can be quickly adjusted, the operation of other devices is prevented from being influenced, and the operation stability of the device is further ensured.
The load adjustment device includes: the device comprises a power boiler, a steam extraction turbine, an external device, a temperature and pressure reducer, a circulating water pump, a torch burning accompanying device, a process device, a temperature and pressure reducer and a blow-down regulating valve, wherein the power boiler is used for regulating the steam yield, the steam extraction turbine is used for regulating the steam extraction flow, the external device is used for reducing the steam supply, stopping the steam supply and returning the steam supply, the temperature and pressure reducer is used for regulating the inlet steam inlet quantity, the circulating water pump is used for stopping the circulating water pump turbine and changing the turbine into an electric pump, the torch burning accompanying regulating mode is used for reducing the torch burning accompanying steam yield, the process device regulating mode is used for regulating the process device throughput, and the blow-down regulating valve is used for opening or closing the valve.
In some embodiments of the present application, the tube capacity corresponding to the target steam tube network may be obtained by the following manner: determining the inner diameter, steam flow rate, length and steam density of each pipe section in a target steam pipe network; determining the steam capacity of each pipe section according to the inner diameter, the steam flow rate, the length and the steam density; the steam capacities of the individual pipe sections are summed to obtain the pipe capacity.
Specifically, the tube capacity can be determined by the following formula:
；
in the method, in the process of the invention,representing the capacity of a j-level steam pipe network; />Representing the pipe section i pipe capacity; di represents the inner diameter of the pipe section i;representing the steam flow rate of pipe section i; />Representing the length of the pipe section i; />Representing the steam density of pipe section i.
Specifically, the tube volume gradient can be determined by the following formula:
；
in the method, in the process of the invention,representing the capacity gradient of the j-level pipeline network management; />The time required for exceeding the steam pipe network operation pressure interval; />Representing the tube volume gradient of tube segment i; />Is the pressure variation of the pressure of the pipe section i along with the steam flow.
In some optional embodiments of the present application, the pressure operation interval of the steam pipe network corresponding to the target pipe network level may be determined by, specifically, obtaining historical operation data of the steam pipe network corresponding to the target pipe network level, where the historical operation data at least includes: pressure operation data; and processing the pressure operation data based on the three-time standard deviation principle to obtain a pressure operation interval.
In this application, in order to solve the problem that when the processing amount of the device is adjusted, the steam production and the steam consumption change to cause the pressure fluctuation of the steam pipe network, and the problem that the steam pipe network is difficult to adjust quickly, the application provides a steam pipe network pressure balancing method based on a pipe capacity gradient, specifically as shown in fig. 2, the steam pipe network pressure balancing method includes:
step one: collecting historical operation data of a steam pipe network pressure measuring point in a certain period, and determining an operation interval of the pressure of the grade steam pipe network according to a design file;
step two: collecting on-site steam pipe network structural parameters, building a pipe network model by using pipe network simulation software, collecting steam operation data of a steam production and consumption device through a real-time database, and calculating in real time to obtain steam pipe network operation information;
step three: and calculating the pipe capacity of each pipe section according to the length, the flow rate and the pipe inner diameter of each pipe section of the pipe network, and establishing a model between the pipe capacity of the pipe network and the pipe pressure and time according to the pipe capacity of each pipe section and the pipe pressure obtained by the pipe network simulation calculation, wherein the model is a pipe capacity gradient model.
Step four: and calculating according to the steam pipe network pressure operation interval, the pipe capacity gradient and the pipe network operation information to obtain a pipe capacity gradient threshold interval for keeping the pipe network pressure in the operation interval.
Step five: and collecting historical operation data of the steam production and consumption device boundary region processing amount, the steam production flow and pressure and/or the steam consumption flow and pressure, and establishing a steam flow-processing amount model and a steam pressure-steam flow model.
Step six: and according to the load adjustment quantity of the steam production and consumption load adjusting device, establishing a load adjustment gradient model of the change of the load adjustment quantity of the device along with time.
Step seven: and when the processing amount of the device is adjusted, monitoring whether the steam pipe network pressure is in a steam pipe network pressure operation interval, if so, continuously monitoring, and not adjusting. If not, the steam production load of the load adjusting device is adjusted so that the pressure of the pipe network can be adjusted to the operation interval in the shortest time.
The steam pipe network pressure operation interval determining principle is as follows: preprocessing the historical operation data, firstly deleting the missing value and the repeated value, and then processing the data according to the three-time standard deviation principle to obtain the minimum value and the maximum value of the steam pipe network pressure, namely the steam pipe network pressure operation interval P olp ~P oup The updating period is 0.5-1 h.
When the steam pipe network model is built, the on-site steam pipe network structural parameters including the length, the inner diameter and the wall thickness of each pipe section, the type and the number of pipe fittings and the material and the thickness of an insulating layer of the steam pipe network between the steam production and consumption device boundary region and the steam production and consumption adjusting device boundary region are required to be collected. And acquiring steam operation data of the steam generating and consuming device, including steam mass flow, temperature and pressure, by a real-time database, and then reading the information by a steam pipe network simulation software, and calculating to obtain operation information of the steam pipe network, including steam mass, temperature, pressure, flow rate, temperature drop and pressure drop.
Calculating the pipe capacity of each pipe section according to the length of the pipe section, the steam flow rate and the pipe inner diameter, and then accumulating to obtain the pipe capacity of the steam pipe network of the level, wherein the steam pipe network capacity is calculated according to the following formula:
；
in the method, in the process of the invention,the capacity of the steam pipe network of the grade; />Pipe section i pipe capacity; />The inner diameter of the pipe section i; />The steam flow rate of the pipe section i; />Length of pipe section i; />Pipe section i vapor density.
The pipe capacity gradient model is calculated according to the pipe capacity of each pipe section to obtain the pipe network capacity of the grade and the pipe capacity gradient of the pipe capacity changing along with the pressure and time of the pipe network, and the pipe capacity gradient model is calculated according to the following formula:
；
in the method, in the process of the invention,the capacity gradient of the pipeline network management is j grades; />The time required for exceeding the steam pipe network operation pressure interval;a tube volume gradient for tube segment i; />Is the pressure variation of the pressure of the pipe section i along with the steam flow.
The steam flow-processing amount model and the steam pressure-steam flow model are used for obtaining the influence degree of device processing amount adjustment on the pressure change of the steam pipe network, wherein the steam flow-processing amount model is as follows:
Fi=bi0+bi1Gi+bi2Gi2；
wherein Fi represents the steam generating flow rate or the steam consuming flow rate of the ith device; bi0, bi1 and bi2 respectively represent model coefficients of steam flow rate or steam consumption flow rate of the ith device; gi represents the processing amount of the i-th apparatus.
The steam pressure-steam flow model is:
；
wherein Fi represents the steam generating flow rate or the steam consuming flow rate of the ith device;representing the ith plant interface vapor pressure; />Representing model coefficients; />Representing the ith device vapor density; />Representing the inner diameter of a steam pipe network in the ith device boundary area; />Representing model constants.
In the steam pipe network pressure balance adjustment process, the steam load adjustment device comprises a power boiler, a steam extraction turbine, a temperature and pressure reducer and an emptying adjustment valve. The power boiler is regulated in steam yield, the steam extraction turbine is regulated in steam extraction flow, the temperature and pressure reducer is regulated in inlet steam yield, and the air release regulating valve is opened or closed.
The load adjustment gradient model of the steam load adjustment device with time is as follows:
；
in the method, in the process of the invention,adjusting the gradient for the load of the load adjusting device k; />The gradient model coefficient is adjusted for the load of the load adjusting device k; />Is a model constant; />Is the amount of pressure change.
When the processing amount of the device is adjusted, whether the pressure of the steam pipe network is in an operation interval is monitored, if the pressure of the steam pipe network exceeds the operation interval, the steam production and consumption load of the load adjusting device is adjusted, and the load adjusting device is adjusted in two conditions:
case one: the steam line pressure being greater than the maximum value of the steam line pressure operating interval indicates that the adjustment of the plant throughput results in a reduced steam demand, at which time the steam conditioning plant load needs to be reduced. And calculating to obtain adjustment time according to the maximum value of the adjustment gradient of the load adjusting device and the gradient threshold value of the capacity gradient of the running pipe network, and adjusting the distribution amount and the adjustment rate according to the load of the load adjusting device, so that the pressure of the pipe network can be adjusted to the running interval in the shortest time.
And a second case: the steam line pressure being less than the minimum value of the steam line pressure operating interval indicates that an adjustment of the plant throughput results in an increase in steam demand, at which time an increase in steam conditioning plant load is required. And calculating the adjustment time according to the minimum value of the pipe capacity gradient threshold and the gradient threshold of the running pipe network capacity, and adjusting the distribution amount and the adjustment rate according to the load by the load adjusting device so as to adjust the running interval of the pipe network pressure value in the shortest time.
Preferably, the load adjustment device adjusts the length of time, the adjustment sequence, the adjustment allocation amount, and the adjustment rate according to the following formula:
,
in the method, in the process of the invention,is a tube capacity gradient threshold; />Adjusting a maximum amount for the load of the load adjusting device k;the gradient maximum is set for the load of the load control device k.
According to the steam pipe network pressure balancing method based on the pipe capacity gradient, the pipe network operation state is obtained through real-time simulation of the steam pipe network, the time required for adjustment is calculated based on the pipe network capacity gradient threshold value, the load adjustment sequence, the adjustment distribution amount and the adjustment speed of the steam load adjusting device are output to a dispatcher, the steam pipe network pressure fluctuation caused by the adjustment of the processing amount of the device can be quickly adjusted, the operation of other devices is prevented from being influenced, and the operation stability of the device is further guaranteed.
Fig. 3 is a schematic structural diagram of a steam pipe network pressure balancing device based on a pipe capacity gradient according to the present embodiment, specifically as shown in fig. 3, the steam pipe network pressure balancing device includes:
the data acquisition module 201 is used for acquiring historical operation data of a steam pipe network pressure measurement point, steam operation data of a steam generating and consuming device and on-site steam pipe network structural parameters through a real-time database;
the steam pipe network simulation module 202 is used for building a steam pipe network model, and calculating and obtaining steam pipe network operation information in real time according to steam operation data of the steam production and consumption device acquired by the real-time database;
a pipe network pressure operation interval module 203, configured to determine and update an operation interval of the steam pipe network pressure, and monitor the steam pipe network pressure at the same time;
a pipe capacity gradient module 204 for calculating a pipe capacity gradient threshold value for operating the pipe network capacity gradient and the steam pipe network pressure operating interval;
the device model module 205 is configured to establish a steam flow-processing amount model, a steam pressure-steam flow model, and a load adjustment gradient model of the load adjustment device according to the data acquired by the data acquisition module;
the load adjustment module 206 is configured to determine the steam pipe network operating pressure, and output an adjustment sequence, an adjustment time, an adjustment allocation amount, and an adjustment rate of the load adjustment device, so that the steam pipe network operating pressure is adjusted to be within the steam pipe network pressure operation interval in the shortest time.
According to the steam pipe network pressure balancing device based on the pipe capacity gradient, the pipe network operation state is obtained through real-time simulation of the steam pipe network, the required adjustment time is calculated based on the pipe network capacity gradient threshold value, the load adjustment sequence, the adjustment distribution amount and the adjustment rate of the steam load adjusting device are output to a dispatcher, the steam pipe network pressure fluctuation caused by the adjustment of the processing amount of the device can be quickly adjusted, the operation of other devices is prevented from being influenced, and the operation stability of the device is further guaranteed.
Fig. 4 is a flow chart of steam pipe network pressure balance adjustment according to the embodiment of the present application, specifically as shown in fig. 4, which proposes a steam pipe network pressure balance method based on a pipe capacity gradient:
and monitoring the operating pressure of the steam pipe network, and judging whether the operating pressure of the steam pipe network is in a steam pipe network pressure operating interval or not when the processing amount of the device is adjusted.
If the steam pipe network operating pressure is within the steam pipe network pressure operating interval, continuing to monitor the steam pipe network operating pressure.
If the steam pipe network operating pressure is not in the steam pipe network pressure operating interval, judging whether the steam pipe network operating pressure is greater than the maximum value of the steam pipe network pressure operating interval.
If the steam pipe network operating pressure is greater than the maximum value of the steam pipe network pressure operating interval, the adjustment of the device processing amount is indicated to reduce the steam demand, and the load of the steam adjusting device is required to be reduced. And calculating to obtain adjustment time according to the maximum value of the adjustment gradient of the load adjusting device and the gradient threshold value of the capacity gradient of the running pipe network, and adjusting the distribution amount according to the load of the load adjusting device, so that the pressure of the pipe network can be adjusted to the running interval in the shortest time.
If the steam pipe network operating pressure is less than the maximum value of the steam pipe network pressure operating interval, the adjustment of the device processing amount is indicated to lead to the increase of the steam demand, and the load of the steam adjusting device is required to be increased. And calculating the adjustment time according to the minimum value of the pipe capacity gradient threshold and the gradient threshold of the running pipe network capacity, and adjusting the distribution amount according to the load by the load adjusting device so as to adjust the running interval of the pipe network pressure value in the shortest time.
And then, the dispatcher adjusts the load of the load adjusting device according to the output result, and continuously monitors the operating pressure of the steam pipe network after the adjustment is finished.
Fig. 5 is a pressure balancing apparatus for a steam pipe network according to an embodiment of the present application, as shown in fig. 5, the apparatus includes:
the detection module 40 is configured to detect a current operating pressure of a target steam pipe network, and determine a target pipe network level corresponding to the target steam pipe network, where the pipe network levels are different, and the operating pressures of the steam pipe networks are different;
a first determining module 42, configured to determine a pressure operation interval of the steam pipe network corresponding to the target pipe network level;
the comparison module 44 is configured to compare the magnitude relation between the current operating pressure and the extreme value in the pressure operating interval to obtain a comparison result;
an acquisition module 46, configured to acquire a pipe capacity corresponding to the target steam pipe network;
a second determining module 48, configured to determine a tube capacity gradient corresponding to the target steam pipe network according to the tube capacity, where the tube capacity gradient is used to indicate a pressure change of the target steam pipe network when the tube capacity changes with time;
an adjustment module 50 for adjusting the current operating pressure based on the pipe capacity gradient and the comparison.
In the pressure balancing device of the steam pipe network, a detection module 40 is used for detecting the current operation pressure of the target steam pipe network and determining the target pipe network grade corresponding to the target steam pipe network, wherein the pipe network grades are different, and the operation pressures of the steam pipe networks are different; a first determining module 42, configured to determine a pressure operation interval of the steam pipe network corresponding to the target pipe network level; the comparison module 44 is configured to compare the magnitude relation between the current operating pressure and the extreme value in the pressure operating interval to obtain a comparison result; an acquisition module 46, configured to acquire a pipe capacity corresponding to the target steam pipe network; a second determining module 48, configured to determine a tube capacity gradient corresponding to the target steam pipe network according to the tube capacity, where the tube capacity gradient is used to indicate a pressure change of the target steam pipe network when the tube capacity changes with time; the adjusting module 50 is configured to adjust the current operating pressure according to the pipe capacity gradient and the comparison result, so as to achieve the purpose of adjusting the operating pressure of the steam pipe in the shortest time, thereby realizing the technical effects of timely and rapidly adjusting the pipe network pressure, reducing noise and saving energy consumption, and further solving the technical problems of adjusting the pressure fluctuation of the steam pipe network, including adjustment lag, easily causing noise pollution and increasing energy consumption and cost.
According to another aspect of the embodiments of the present application, there is further provided a non-volatile storage medium, where the non-volatile storage medium includes a stored program, and when the program runs, the device where the non-volatile storage medium is controlled to execute any one of the pressure balancing methods of the steam pipe network.
According to another aspect of the embodiments of the present application, there is further provided a processor, configured to execute a program, where the program executes any one of the pressure balancing methods of the steam pipe network during running.
Specifically, the storage medium is used for storing program instructions for executing the following functions, and the following functions are realized:
detecting the current operating pressure of a target steam pipe network, and determining a target pipe network grade corresponding to the target steam pipe network, wherein the pipe network grades are different, and the operating pressures of the steam pipe networks are different; determining a pressure operation interval of the steam pipe network corresponding to the target pipe network level; comparing the magnitude relation between the current operating pressure and the extreme value in the pressure operating interval to obtain a comparison result; acquiring the pipe capacity corresponding to the target steam pipe network; determining a pipe capacity gradient corresponding to the target steam pipe network according to the pipe capacity, wherein the pipe capacity gradient is used for indicating the pressure change of the target steam pipe network when the pipe capacity changes along with the time; and adjusting the current operating pressure according to the pipe capacity gradient and the comparison result.
Specifically, the above processor is configured to call program instructions in the memory, and implement the following functions:
detecting the current operating pressure of a target steam pipe network, and determining a target pipe network grade corresponding to the target steam pipe network, wherein the pipe network grades are different, and the operating pressures of the steam pipe networks are different; determining a pressure operation interval of the steam pipe network corresponding to the target pipe network level; comparing the magnitude relation between the current operating pressure and the extreme value in the pressure operating interval to obtain a comparison result; acquiring the pipe capacity corresponding to the target steam pipe network; determining a pipe capacity gradient corresponding to the target steam pipe network according to the pipe capacity, wherein the pipe capacity gradient is used for indicating the pressure change of the target steam pipe network when the pipe capacity changes along with the time; and adjusting the current operating pressure according to the pipe capacity gradient and the comparison result.
In the related embodiment of the application, a mode of gradient adjustment of the pipe capacity is adopted, and the current operating pressure of the target steam pipe network is detected, and the target pipe network grade corresponding to the target steam pipe network is determined; determining a pressure operation interval of the steam pipe network corresponding to the target pipe network level; comparing the magnitude relation between the current operating pressure and the extreme value in the pressure operating interval to obtain a comparison result; acquiring the pipe capacity corresponding to the target steam pipe network; determining a pipe capacity gradient corresponding to the target steam pipe network according to the pipe capacity, wherein the pipe capacity gradient is used for indicating the pressure change of the target steam pipe network when the pipe capacity changes along with the time; the current operating pressure is adjusted according to the pipe capacity gradient and the comparison result, so that the aim of adjusting the operating pressure of the steam pipeline in the shortest time is fulfilled, the pipe network pressure is timely and rapidly adjusted, noise is reduced, the technical effect of energy consumption is saved, and the technical problems that when the pressure fluctuation of the steam pipe network is adjusted, adjustment lag exists, noise pollution is easy to cause, and energy consumption and cost are increased are solved.
The foregoing embodiment numbers of the present application are merely for describing, and do not represent advantages or disadvantages of the embodiments.
In the foregoing embodiments of the present application, the descriptions of the embodiments are emphasized, and for a portion of this disclosure that is not described in detail in this embodiment, reference is made to the related descriptions of other embodiments.
In the several embodiments provided in the present application, it should be understood that the disclosed technology content may be implemented in other manners. The above-described embodiments of the apparatus are merely exemplary, and the division of the units, for example, may be a logic function division, and may be implemented in another manner, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interfaces, units or modules, or may be in electrical or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a storage medium, including several instructions to cause a computer device (which may be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The foregoing is merely a preferred embodiment of the present application and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present application and are intended to be comprehended within the scope of the present application.
Claims (7)
1. A method for pressure equalization of a steam pipe network, comprising:
detecting the current operating pressure of a target steam pipe network, and determining a target pipe network grade corresponding to the target steam pipe network, wherein the pipe network grades are different, and the operating pressures of the steam pipe networks are different;
determining a pressure operation interval of the steam pipe network corresponding to the target pipe network level;
comparing the magnitude relation between the current operating pressure and the extreme value in the pressure operating interval to obtain a comparison result;
acquiring the pipe capacity corresponding to the target steam pipe network;
determining a pipe capacity gradient corresponding to the target steam pipe network according to the pipe capacity, wherein the pipe capacity gradient is used for indicating the pipe capacity to change with time and the pressure of the target steam pipe network;
adjusting the current operating pressure according to the pipe capacity gradient and the comparison result;
adjusting the current operating pressure based on the pipe capacity gradient and the comparison result, comprising: acquiring an adjustment gradient maximum value of the load adjustment device under the condition that the comparison result indicates that the current operation pressure is larger than the maximum value indicated by the pressure operation interval; determining an adjustment parameter according to the adjustment gradient maximum value and the pipe capacity gradient, wherein the adjustment parameter at least comprises: adjusting the duration, the adjusting sequence, the adjusting distribution amount and the adjusting rate; controlling the current operation pressure of the target steam pipe network to return to the pressure operation interval within the adjustment duration;
the tube capacity is determined by the following formula:
；
in the method, in the process of the invention,representing the capacity of a j-level steam pipe network; />Representing the pipe section i pipe capacity; di represents the inner diameter of the pipe section i; />Representing the steam flow rate of pipe section i; />Representing the length of the pipe section i; />Representing the steam density of pipe section i;
the tube volume gradient is determined by the following formula:
；
in the method, in the process of the invention,representing the capacity gradient of the j-level pipeline network management; />The time required for exceeding the steam pipe network operation pressure interval;representing the tube volume gradient of tube segment i; />Is the pressure variation of the pressure of the pipe section i along with the steam flow.
2. The method of claim 1, wherein adjusting the current operating pressure based on the pipe capacity gradient and the comparison comprises:
acquiring an adjustment gradient minimum value of the load adjustment device under the condition that the comparison result indicates that the current operation pressure is smaller than the minimum value indicated by the pressure operation interval;
determining an adjustment parameter according to the adjustment gradient minimum value and the pipe capacity gradient, wherein the adjustment parameter at least comprises: adjusting the duration, the adjusting sequence, the adjusting distribution amount and the adjusting rate;
and controlling the current operating pressure of the target steam pipe network to return to the pressure operating interval within the adjusting duration.
3. The method of claim 1, wherein obtaining a tube capacity corresponding to the target steam tube network comprises:
determining the inner diameter, steam flow rate, length and steam density of each pipe section in the target steam pipe network;
determining the steam capacity of each pipe section according to the inner diameter, the steam flow rate, the length and the steam density;
and summing the steam capacities of the pipe sections to obtain the pipe capacity.
4. The method of claim 1, wherein determining a pressure operating interval of the steam pipe network corresponding to the target pipe network level comprises:
acquiring historical operation data of the steam pipe network corresponding to the target pipe network level, wherein the historical operation data at least comprises: pressure operation data;
and processing the pressure operation data based on the three-time standard deviation principle to obtain the pressure operation interval.
5. A pressure balancing device for a steam pipe network, comprising:
the detection module is used for detecting the current operating pressure of the target steam pipe network and determining the grade of the target pipe network corresponding to the target steam pipe network, wherein the grade of the pipe network is different, and the operating pressure of the steam pipe network is different;
the first determining module is used for determining a pressure operation interval of the steam pipe network corresponding to the target pipe network level;
the comparison module is used for comparing the magnitude relation between the current operating pressure and the extreme value in the pressure operating interval to obtain a comparison result;
the acquisition module is used for acquiring the pipe capacity corresponding to the target steam pipe network;
the second determining module is used for determining a pipe capacity gradient corresponding to the target steam pipe network according to the pipe capacity, wherein the pipe capacity gradient is used for indicating the pipe capacity to change with time and the pressure of the target steam pipe network;
an adjustment module for adjusting the current operating pressure according to the pipe capacity gradient and the comparison result;
the adjusting module is further used for acquiring an adjusting gradient maximum value of the load adjusting device under the condition that the comparison result indicates that the current operation pressure is larger than the maximum value indicated by the pressure operation interval; determining an adjustment parameter according to the adjustment gradient maximum value and the pipe capacity gradient, wherein the adjustment parameter at least comprises: adjusting the duration, the adjusting sequence, the adjusting distribution amount and the adjusting rate; controlling the current operation pressure of the target steam pipe network to return to the pressure operation interval within the adjustment duration;
the acquisition module is further configured to determine a pipe capacity by the following formula:
；
in the method, in the process of the invention,representing the capacity of a j-level steam pipe network; />Representing the pipe section i pipe capacity; di represents the inner diameter of the pipe section i; />Representing the steam flow rate of pipe section i; />Representing the length of the pipe section i; />Representing the steam density of pipe section i;
the tube volume gradient is determined by the following formula:
；
in the method, in the process of the invention,representing the capacity gradient of the j-level pipeline network management; />The time required for exceeding the steam pipe network operation pressure interval;representing the tube volume gradient of tube segment i; />Is the pressure variation of the pressure of the pipe section i along with the steam flow.
6. A non-volatile storage medium, characterized in that the non-volatile storage medium comprises a stored program, wherein the program, when run, controls a device in which the non-volatile storage medium is located to perform the method for pressure balancing of a steam pipe network according to any one of claims 1 to 4.
7. A processor for running a program, wherein the program when run performs the method of pressure equalization of a steam pipe network according to any of claims 1 to 4.
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