CN114165825B - Heat supply regulation and control system and method for heat exchange station - Google Patents
Heat supply regulation and control system and method for heat exchange station Download PDFInfo
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- CN114165825B CN114165825B CN202111422227.1A CN202111422227A CN114165825B CN 114165825 B CN114165825 B CN 114165825B CN 202111422227 A CN202111422227 A CN 202111422227A CN 114165825 B CN114165825 B CN 114165825B
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- 230000033228 biological regulation Effects 0.000 title claims abstract description 81
- 238000000034 method Methods 0.000 title claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 235
- 238000012544 monitoring process Methods 0.000 claims abstract description 13
- 230000001105 regulatory effect Effects 0.000 claims abstract description 11
- 238000004321 preservation Methods 0.000 claims description 33
- 238000010438 heat treatment Methods 0.000 claims description 9
- 239000008400 supply water Substances 0.000 claims description 6
- 230000001276 controlling effect Effects 0.000 abstract description 2
- 238000013459 approach Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/02—Hot-water central heating systems with forced circulation, e.g. by pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/0002—Means for connecting central heating radiators to circulation pipes
- F24D19/0056—Supplies from the central heating system
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
- F24D19/1015—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
- F24D3/1058—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system disposition of pipes and pipe connections
Abstract
The invention relates to a heat supply regulation and control system and method for a heat exchange station. The system comprises an intelligent electric valve, a temperature collector, a heat station acquisition regulation and control unit and a meteorological monitoring unit, wherein the meteorological monitoring unit is used for acquiring outdoor air temperature in real time or directly acquiring local outdoor air temperature through a weather forecast system of a related meteorological department, the temperature collector is used for acquiring the real-time water supply temperature of the heat exchange station, a cloud server is used for calculating the theoretical water supply temperature of the heat supply station under the outdoor air temperature according to the outdoor air temperature, and the intelligent electric valve of a water supply pipeline of a primary network is dynamically adjusted according to the theoretical water supply temperature and the real-time water supply temperature, so that the dynamic adjustment of the water supply temperature of the heat exchange station is realized. The invention realizes the dynamic regulation and control of the real-time water supply temperature of the heat exchange station by dynamically regulating and controlling the water supply flow from the heat source plant to the heat exchange station in the primary network, thereby meeting the requirement that the indoor temperature of the heat supply users of the secondary network stably reaches the standard.
Description
Technical Field
The invention relates to the field of heat supply regulation and control, in particular to a heat supply regulation and control system and method for a heat exchange station.
Background
In the urban public heating field, the heat exchange station plays a vital role between a primary network and a secondary network, the indoor temperature of a user is determined by the water supply temperature provided by the heat exchange station, the higher the water supply temperature is, the higher the indoor temperature is, and the lower the indoor temperature is, so that the problem of how to regulate and control the water supply temperature to meet the indoor temperature standard of the user is worth researching.
Because the temperature difference of the water supply and the water return provided by the heat source plant cannot be actively changed, the water supply temperature provided by the heat exchange station is also fixed after the heat exchange is carried out by the heat exchanger under the condition of fixed heat supply flow. And because the heat exchange station has a longer pipeline distance with the heating area, the hot water supply of the secondary network needs a period of time to reach the heating area, part of heat can be inevitably lost in the process, and the indoor heat dissipation can also be changed due to the change of the outdoor temperature, so that the indoor temperature can fluctuate, the water supply temperature cannot meet the indoor temperature of a user, and the heat supply cannot meet the standard.
Therefore, a heat supply regulation and control system and a heat supply regulation and control method for a heat exchange station are needed in the field to solve the problem that indoor temperature of a secondary network heat supply user fluctuates along with weather changes, so that heat supply is not up to standard.
Disclosure of Invention
The invention aims to provide a heat exchange station heat supply regulation and control system and a heat exchange station heat supply regulation and control method.
In order to achieve the purpose, the invention provides the following scheme:
a heat exchange station heating regulation and control system comprises: the intelligent electric valve, the temperature collector, the hot station collection regulation and control unit and the meteorological monitoring unit;
the intelligent electric valve is arranged at one end of the primary network water supply pipeline close to the heat exchange station; the primary network water supply pipeline is a water supply pipeline between a heat source plant and the heat exchange station;
the temperature collector is arranged at one end, close to the heat exchange station, of the secondary network water supply pipeline, is connected with the heat station collecting and regulating unit and is used for collecting the real-time water supply temperature of the heat exchange station; the secondary network water supply pipeline is a water supply pipeline from the heat exchange station to the heat supply area;
the weather monitoring unit is used for acquiring real-time outdoor air temperature or directly acquiring local outdoor air temperature from a weather forecast system of a weather department and uploading the outdoor air temperature to the cloud server;
the cloud server calculates theoretical water supply temperature according to the outdoor air temperature, and sends the theoretical water supply temperature to the thermal station acquisition regulation and control unit;
the thermal station acquisition regulation and control unit regulates the opening of the intelligent electric valve according to the theoretical water supply temperature and the real-time water supply temperature so that the real-time water supply temperature reaches the theoretical water supply temperature.
In some embodiments, the cloud server calculates a theoretical water supply temperature according to the outdoor air temperature, and specifically includes:
the theoretical feed water temperature was calculated according to the following formula:
T 1 ＝T 0 -kΔT
wherein, T 1 For theoretical supply water temperature, T 0 The method is characterized in that the empirical preset value of the basic water supply temperature is a standard indoor temperature corresponding to the air temperature of 0 ℃ in the area where the heat exchange station is located, k is a heat preservation coefficient, and delta T is the outdoor air temperature.
In some embodiments, the system further comprises an intelligent temperature collector;
the intelligent temperature collector is arranged indoors of each user and used for collecting the indoor temperature of the user and uploading the indoor temperature to the cloud server;
the cloud server calculates the indoor average temperature according to the indoor temperature; if the indoor average temperature of a plurality of statistical periods is different from the standard indoor temperature, but the temperature difference between the indoor average temperature of the statistical periods and the standard indoor temperature is kept unchanged, determining the empirical preset value T of the basic water supply temperature 0 The presetting is incorrect;
when the empirical preset value T of the basic water supply temperature is determined 0 When the preset is incorrect, the cloud server utilizes the basic water supply temperature experience preset value T 0 Subtracting the temperature difference to obtain the empirical regulation value T of the temperature of the basic water supply 0 '；
The cloud server regulates and controls the value T according to the experience of the temperature of the basic water supply 0 ' calculating a theoretical water supply regulation and control temperature according to the outdoor air temperature, and sending the theoretical water supply regulation and control temperature to the thermal station acquisition regulation and control unit;
the thermal station acquisition regulation and control unit regulates the opening of the intelligent electric valve according to the theoretical water supply regulation and control temperature and the real-time water supply temperature so that the real-time water supply temperature reaches the theoretical water supply regulation and control temperature.
In some embodiments, the cloud server calculates an indoor average temperature according to the indoor temperature; if the indoor average temperature of a plurality of statistical periods is different from the standard indoor temperature, and the temperature difference between the indoor average temperature of the statistical periods and the standard indoor temperature is different, determining that the heat preservation coefficient k is set to be wrong;
when the heat preservation coefficient k is determined to be incorrect, the hot station acquisition regulation and control unit uploads the real-time water supply temperature to the cloud server;
the cloud server calculates and adjusts the heat preservation coefficient k according to the outdoor air temperature and the real-time water supply temperature, and the formula is as follows:
wherein, T' 1 For real-time water supply temperature, T 0 The empirical preset value of the basic water supply temperature is the corresponding standard indoor temperature of the air temperature of 0 ℃ in the area where the heat exchange station is located, and delta T is the outdoor air temperature.
On the other hand, the invention also provides a heat supply regulation and control method for the heat exchange station, which comprises the following steps:
acquiring the real-time water supply temperature of the heat exchange station;
acquiring outdoor air temperature;
calculating theoretical water supply temperature according to the outdoor air temperature;
adjusting the opening of an intelligent electric valve according to the theoretical water supply temperature and the real-time water supply temperature so as to enable the real-time water supply temperature to reach the theoretical water supply temperature; the intelligent electric valve is arranged at one end, close to the heat exchange station, of the primary network water supply pipeline.
In some embodiments, the calculating a theoretical water supply temperature according to the outdoor air temperature specifically includes:
the theoretical feed water temperature was calculated according to the following formula:
T 1 ＝T 0 -kΔT
wherein, T 1 For theoretical supply water temperature, T 0 Basic water supply for reaching indoor temperature corresponding to 0 ℃ air temperature of area where heat exchange station is locatedAnd (4) the temperature experience preset value, k is a heat preservation coefficient, and delta T is the outdoor air temperature.
In some embodiments, the indoor temperature of each user is obtained;
calculating an indoor average temperature according to the indoor temperature; if the indoor average temperature of a plurality of statistical periods is different from the standard indoor temperature, but the temperature difference between the indoor average temperature of the statistical periods and the standard indoor temperature is kept unchanged, determining the empirical preset value T of the basic water supply temperature 0 The presetting is incorrect;
when the empirical preset value T of the basic water supply temperature is determined 0 When the preset is incorrect, the empirical preset value T of the basic water supply temperature is utilized 0 Subtracting the temperature difference to obtain the empirical regulation value T of the basic water supply temperature 0 '；
According to the basic water supply temperature experience regulation value T 0 ' calculating theoretical water supply regulation and control temperature according to the outdoor air temperature;
and adjusting the opening of the intelligent electric valve according to the theoretical water supply regulation and control temperature and the real-time water supply temperature so that the real-time water supply temperature reaches the theoretical water supply regulation and control temperature.
In some embodiments, if the average indoor temperature of a plurality of statistical periods is different from the standard indoor temperature and the temperature difference between the average indoor temperature of a plurality of statistical periods and the standard indoor temperature is different, determining that the insulation coefficient k is set to be incorrect;
when the heat preservation coefficient k is determined to be set with an error, calculating and adjusting the heat preservation coefficient k according to the outdoor air temperature and the real-time water supply temperature, wherein the formula is as follows:
wherein, T' 1 For supplying water temperature, T, in real time 0 The empirical preset value of the basic water supply temperature is the corresponding standard indoor temperature of the air temperature of 0 ℃ in the area where the heat exchange station is located, and delta T is the outdoor air temperature.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the invention provides a heat exchange station heat supply regulation and control system and a method, wherein a meteorological monitoring unit is used for acquiring outdoor temperature in real time or directly acquiring local outdoor temperature through a weather forecast system of a related meteorological department, theoretical water supply temperature of a heat supply station under the outdoor temperature is calculated according to the acquired outdoor temperature, and an intelligent electric valve of a water supply pipeline of a primary network is dynamically regulated according to the theoretical water supply temperature and the real-time water supply temperature so as to change water supply flow of the primary network, thereby realizing dynamic regulation of the heat supply temperature of the heat exchange station to a heating area and further enabling the indoor temperature of a secondary network heat supply user to stably reach the standard.
Meanwhile, the invention can also utilize the outdoor temperature of a certain future time period predicted by the weather forecast system to predict the theoretical water supply temperature of the future time period, thereby effectively reducing the influence of weather on the water supply temperature and enabling the indoor temperature of the user to be quickly compensated.
The cloud server can automatically correct the preset empirical preset value of the basic water supply temperature and the heat preservation coefficient according to the indoor temperature of the user, and effectively improves the prediction accuracy of the heat supply temperature.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts. The following drawings are not intended to be drawn to scale in actual size, with emphasis instead being placed upon illustrating the principles of the invention.
Fig. 1 is a schematic structural diagram illustrating a heat supply regulation and control system of a heat exchange station according to an embodiment of the present invention;
fig. 2 is a schematic diagram illustrating a heating regulation and control system of a heat exchange station according to an embodiment of the present invention;
fig. 3 illustrates a control schematic diagram of a heat supply control system of a heat exchange station according to an embodiment of the present invention;
fig. 4 shows a schematic flow chart of a heat supply regulation and control method of a heat exchange station according to an embodiment of the present invention;
fig. 5 shows a schematic control flow diagram of a heat supply control method of a heat exchange station according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
As used in this disclosure and in the claims, the terms "a," "an," "the," and/or "the" are not intended to be inclusive in the singular, but rather are inclusive in the plural, unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that steps and elements are included which are explicitly identified, that the steps and elements do not form an exclusive list, and that a method or apparatus may include other steps or elements.
Although the present invention makes various references to certain modules in a pipeline according to embodiments of the present invention, any number of different modules may be used and run on a user terminal and/or server. The modules are merely illustrative and different aspects of the pipeline and method may use different modules.
Flow charts are used in the present invention to illustrate the operations performed by a pipeline according to embodiments of the present invention. It should be understood that the preceding or following operations are not necessarily performed in the exact order in which they are performed. Rather, the various steps may be processed in reverse order or simultaneously, as desired. Meanwhile, other operations may be added to the processes, or a certain step or several steps of operations may be removed from the processes.
For the convenience of understanding, some of the terms and abbreviations used in the present invention are explained as follows:
the primary network water supply pipeline is arranged between the heat source plant and the heat exchange station;
and the secondary network water supply pipeline is a water supply pipeline arranged between the heat exchange station and the heat supply area.
The invention provides a heat exchange station heat supply regulation and control system and a method, wherein a meteorological monitoring unit is used for acquiring outdoor air temperature in real time or directly acquiring local outdoor air temperature through a weather forecast system of a relevant meteorological department, theoretical water supply temperature of a heat supply station under the outdoor air temperature is calculated according to the acquired outdoor air temperature, and an intelligent electric valve of a water supply pipeline of a primary network is dynamically regulated according to the temperature difference between the theoretical water supply temperature and the real-time water supply temperature so as to change the water supply flow of the primary network, thereby realizing the dynamic regulation of the heat supply temperature of the heat exchange station to a heating area and further enabling the indoor temperature of a secondary network heat supply user to stably reach the standard.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Example one
As shown in fig. 1 and fig. 2, the present embodiment provides a heat supply regulation and control system for a heat exchange station. The system comprises an intelligent electric valve, a temperature collector, a hot station collection and regulation unit and a meteorological monitoring unit.
Wherein, intelligence electrically operated valve sets up in the one end that the water supply pipe of primary network is close to the heat transfer station, and temperature collection ware sets up in the one end that the water supply pipe of secondary network is close to the heat transfer station to gather regulation and control unit connection with the heat station. The weather monitoring unit can collect the local outdoor temperature in real time, or directly acquire the local outdoor temperature from a weather forecast system of a related weather department, and send the acquired outdoor temperature to the cloud server. And the cloud server performs prediction calculation on the theoretical water supply temperature in the next time period according to the received outdoor air temperature, and sends the calculated theoretical water supply temperature to the thermal station acquisition regulation and control unit. The heat station acquisition regulating and controlling unit regulates the opening of the intelligent electric valve according to the received theoretical water supply temperature and the real-time water supply temperature of the heat exchange station acquired by the temperature acquisition device, so that the real-time water supply temperature can approach the theoretical water supply temperature and even reach the theoretical water supply temperature.
As a specific example, the cloud server may calculate the theoretical water supply temperature according to the following formula:
T 1 ＝T 0 -kΔT (1)
wherein, T 1 For theoretical supply water temperature, T 0 The empirical preset value of the basic water supply temperature is the corresponding standard indoor temperature of the air temperature of 0 ℃ in the area where the heat exchange station is located, k is a heat preservation coefficient, and delta T is the outdoor air temperature. For example, assuming that the real-time water supply temperature of the heat exchange station obtained by the temperature collector is 70 ℃, the empirical preset value T of the basic water supply temperature of the up-to-standard indoor temperature corresponding to the 0 ℃ air temperature of the area controlled by the heat exchange station is set 0 The temperature is 60 ℃, the preset heat preservation coefficient k of the cloud server is 1.2, the local outdoor air temperature delta T acquired by the meteorological monitoring unit is-10 ℃, and then the data are substituted into the formula (1), so that the theoretical water supply temperature T of the heat exchange station under the current outdoor air temperature is obtained 1 Should be 72 deg.c. Therefore, the real-time water supply temperature is 2 ℃ lower than the theoretical water supply temperature, so that the opening of the intelligent electric valve can be increased by the heat station acquisition regulation and control unit, the water supply flow from a heat source plant to the heat exchange station in the primary network is increased, the heat exchange efficiency of hot water supply of the primary network and hot water supply of the secondary network is increased, the real-time water supply temperature of the heat exchange station is improved, and the real-time water supply temperature can approach the theoretical water supply temperature and even reach the theoretical water supply temperature. On the contrary, if the real-time water supply temperature is higher than the theoretical water supply temperature, the heat station acquisition regulation and control unit can reduce the opening of the intelligent electric valve, so that the water supply flow from a heat source plant to the heat exchange station in the primary network is reduced, the heat exchange efficiency of primary network hot water supply and secondary network hot water supply is reduced, the real-time water supply temperature of the heat exchange station is reduced, and the energy waste is reduced.
In addition, as a specific embodiment, since the weather forecast system has a function of forecasting the air temperature in a local future period, when the theoretical water supply temperature in a future period is forecasted, the local real-time outdoor air temperature can be selected, and the outdoor temperature in a future period corresponding to one hour, two hours and the like of the current time obtained by the weather forecast system can also be selected, and the theoretical water supply temperature of the heat exchange station is forecasted and calculated by using the formula (1), so that the influence of the change of the weather temperature on the heat supply temperature is reduced, and the heat supply compensation efficiency is improved.
In summary, in this embodiment, the water supply temperature of the heat exchange station in the next time period is predicted according to the change of the outdoor air temperature, and the water supply flow from the heat source plant to the heat exchange station in the primary network is dynamically regulated according to the predicted theoretical water supply temperature, so that the real-time water supply temperature of the heat exchange station is dynamically regulated, and the indoor temperature of the heat supply user of the secondary network stably reaches the standard.
Example two
Based on the heat supply regulation and control system of the heat exchange station provided by the first embodiment, as shown in fig. 3, an intelligent temperature collector can be arranged in the system. The intelligent temperature collector is arranged indoors of each user controlled by the heat exchange station and used for collecting the indoor temperature of the user and sending the obtained indoor temperature to the cloud server. The cloud server carries out periodic statistics on the indoor temperature of the user and calculates the indoor average temperature of each statistical period.
As a specific embodiment, a local heat supply user standard indoor temperature is preset in the cloud server. If the indoor average temperature of a plurality of statistical periods is different from the standard indoor temperature, but the temperature difference between the indoor average temperature and the standard indoor temperature is kept unchanged, the cloud server can determine the empirical preset value T of the basic water supply temperature 0 The preset is incorrect. At this time, the cloud server will utilize the empirical preset value T of the basic water supply temperature 0 Subtracting the temperature difference between the indoor average temperature and the standard indoor temperature to obtain the empirical regulation value T of the basic water supply temperature 0 '. Then, the cloud server regulates and controls the value T according to the experience of the basic water supply temperature 0 And the outdoor air temperature, calculating the theoretical water supply regulation temperature by using a formula (1), wherein the specific formula is as follows:
T 11 ＝T 0 '-kΔT
wherein, T 11 Regulating temperature, T, for theoretical supply 0 The' is an empirical regulation value of the basic water supply temperature, k is a heat preservation coefficient, and delta T is the outdoor air temperature. And then the cloud server sends the theoretical water supply regulation and control temperature to the hot station collection and control unit, and the hot station collection and control unit regulates the opening of the intelligent electric valve according to the theoretical water supply regulation and control temperature and the real-time water supply temperature so that the real-time water supply temperature approaches to the theoretical water supply regulation and control temperature and even reaches the size of the theoretical water supply regulation and control temperature.
Specifically, assuming that the standard indoor temperature of a local heat supply user is 18 ℃, the cloud server takes 24 hours as a statistical period, the indoor average temperature of a statistical period of all users managed and controlled by the heat exchange station is calculated to be 15 ℃, and the indoor average temperatures of three statistical periods are all 15 ℃, obviously, the indoor average temperatures of the three statistical periods do not reach the requirement of the standard indoor temperature, but the temperature difference between the indoor average temperature of each statistical period and the standard indoor temperature is-3 ℃. Therefore, at the moment, the cloud server can determine the empirical preset value T of the basic water supply temperature 0 Incorrect presetting and empirical preset value T of basic water supply temperature 0 Subtracting the temperature difference between the indoor average temperature and the standard indoor temperature to be-3 ℃ to obtain the empirical regulation value T of the basic water supply temperature 0 '＝T 0 +3 ℃. Calculating to obtain the theoretical water supply regulation and control temperature T by the cloud server according to the formula (1) 11 ＝T 0 '-kΔT＝T 1 +3 ℃ it follows that the empirical value T for the temperature of the basic feed water is preset 0 The setting is small, so that the real-time water supply temperature of the heat exchange station is small, and the cloud server calculates the regulated water supply to obtain the theoretical water supply regulation and control temperature T 11 The intelligent electric valve is sent to the heat station acquisition and control unit, the opening of the intelligent electric valve is increased by the heat station acquisition and control unit, the water supply flow from a heat source plant to the heat exchange station in the primary network is increased, the heat exchange efficiency of hot water supply of the primary network and hot water supply of the secondary network is further increased, and the real-time water supply temperature of the heat exchange station is improved.
If the indoor average temperature of a plurality of statistical periods is different from the standard indoor temperature, and the temperature difference between the indoor average temperature of the statistical periods and the standard indoor temperature is different, the cloud server can determine that the heat preservation coefficient k is set to be wrong. At the moment, the heat station acquisition regulation and control unit uploads the real-time water supply temperature of the heat exchange station to the cloud server. The cloud server calculates and adjusts a heat preservation coefficient k according to the received outdoor air temperature and the real-time water supply temperature, and the specific formula is as follows:
wherein, T' 1 For supplying water temperature, T, in real time 0 The empirical preset value of the basic water supply temperature is the corresponding standard indoor temperature of the air temperature of 0 ℃ in the area where the heat exchange station is located, and delta T is the outdoor air temperature. And the cloud server recalculates the theoretical water supply temperature of the heat exchange station according to the adjusted heat preservation coefficient, and makes a corresponding adjusting process.
Specifically, assuming that the standard indoor temperature of a local heat supply user is 18 ℃, the cloud server takes 24 hours as a statistical period, the indoor average temperatures of the first statistical period to the third statistical period of all users managed and controlled by the heat exchange station are calculated to be 15 ℃, 19 ℃ and 20 ℃ in sequence, and obviously, the indoor average temperatures of the three statistical periods do not meet the requirement of the standard indoor temperature, and the temperature difference between the indoor average temperature of each statistical period and the standard indoor temperature is different. Therefore, the cloud server can judge that the heat preservation coefficient k is set wrongly, and at the moment, the cloud server can recalculate the adjusted heat preservation coefficient according to the formula (2), recalculate the water supply temperature of the heat exchange station by utilizing the obtained adjusted heat preservation coefficient, and correspondingly adjust the opening degree of the intelligent electric valve so as to maintain the indoor temperature of the user to reach the standard constantly.
Therefore, the indoor temperature of the user of each heat exchange station is utilized in the embodiment, so that the cloud server can experience the preset value T for the basic water supply temperature 0 And the heat preservation coefficient k is automatically corrected to meet the requirement of local standard indoor temperature, so that the indoor temperature of each user is kept constantly to reach the standard, and the heat supply temperature is effectively improvedDegree of prediction accuracy.
EXAMPLE III
As shown in fig. 4, the embodiment provides a heat supply control method for a heat exchange station, which includes the following steps:
and acquiring the real-time water supply temperature of the heat exchange station.
And acquiring the outdoor temperature, wherein the indoor temperature is the real-time outdoor temperature acquired by the weather monitoring unit or the local outdoor temperature is directly acquired by a weather forecasting system of a weather department.
And calculating the theoretical water supply temperature according to the outdoor air temperature.
As a specific example, the theoretical feed water temperature is calculated according to the following formula:
T 1 ＝T 0 -kΔT (1)
wherein, T 1 For theoretical supply water temperature, T 0 The method is characterized in that the empirical preset value of the basic water supply temperature is a standard indoor temperature corresponding to the air temperature of 0 ℃ in the area where the heat exchange station is located, k is a heat preservation coefficient, and delta T is the outdoor air temperature.
And increasing or reducing the opening degree of the intelligent electric valve according to the theoretical water supply temperature and the real-time water supply temperature, so that the real-time water supply temperature can approach the theoretical water supply temperature and even reach the theoretical water supply temperature.
Secondly, an empirical preset value T is taken into account for the temperature of the basic water supply 0 And the heat-insulating coefficient k is artificially preset and is influenced by the outdoor air temperature, so T 0 And k, a preset error exists, and the embodiment can perform empirical preset value T on the basic water supply temperature through the indoor temperature of each user managed and controlled by the heat exchange station 0 And the heat preservation coefficient k is automatically corrected and adjusted, as shown in fig. 5, the specific adjustment process is as follows:
and calculating the indoor average temperature according to the collected indoor temperature of each user.
If the indoor average temperatures of the plurality of statistical periods are different from the preset standard indoor temperature, namely the indoor average temperature of each statistical period does not meet the requirement of the standard indoor temperature, but the temperature difference dimension between the indoor average temperature of each statistical period and the standard indoor temperatureIf the temperature is constant, the empirical preset value T of the basic water supply temperature can be judged 0 The preset is incorrect.
At this time, the empirical preset value T of the basic water supply temperature is utilized 0 Subtracting the temperature difference between the indoor average temperature and the standard indoor temperature to obtain the empirical regulation value T of the basic water supply temperature 0 '. Then, the theoretical water supply regulation and control temperature is calculated through a formula (1), wherein the specific formula is as follows:
T 11 ＝T 0 '-kΔT
wherein, T 11 Regulating temperature, T, for theoretical supply 0 The' is an empirical regulation value of the temperature of the basic water supply, k is a heat preservation coefficient, and delta T is the outdoor air temperature. And then, adjusting the opening of the intelligent electric valve according to the theoretical water supply regulation temperature and the real-time water supply temperature so as to enable the real-time water supply temperature to approach the theoretical water supply regulation temperature and even reach the theoretical water supply regulation temperature.
If the indoor average temperature of the plurality of statistical periods is different from the standard indoor temperature, and the temperature difference between the indoor average temperature of each statistical period and the standard indoor temperature is different, it can be determined that the heat preservation coefficient k is set to be wrong.
At the moment, the adjusting heat preservation coefficient k is calculated according to the local outdoor air temperature and the real-time water supply temperature of the heat exchange station, and the formula is as follows:
wherein, T' 1 For supplying water temperature, T, in real time 0 The empirical preset value of the basic water supply temperature is the corresponding standard indoor temperature of the air temperature of 0 ℃ in the area where the heat exchange station is located, and delta T is the outdoor air temperature. And then, according to the adjusted heat preservation coefficient, recalculating the theoretical water supply temperature of the heat exchange station and making a corresponding adjustment process.
In summary, the present invention provides a heat exchange station heat supply regulation and control system and method, which utilizes a weather monitoring unit to collect outdoor air temperature in real time or directly obtain local outdoor air temperature through a weather forecast system of a related weather department, calculates theoretical water supply temperature of the heat exchange station under the outdoor air temperature according to the obtained outdoor air temperature, and dynamically adjusts an intelligent electric valve of a water supply pipeline of a primary network according to the temperature difference between the theoretical water supply temperature and the real-time water supply temperature to change the water supply flow of the primary network, thereby dynamically adjusting the heat supply temperature of the heat exchange station to a heating area, and further enabling the indoor temperature of a secondary network heat supply user to reach the standard stably.
Meanwhile, the invention can also utilize the outdoor temperature of a certain future time period predicted by the weather forecast system to predict the theoretical water supply temperature of the future time period, thereby effectively reducing the influence of weather on the water supply temperature and enabling the indoor temperature of the user to be quickly compensated.
The cloud server can automatically correct the preset empirical preset value of the basic water supply temperature and the heat preservation coefficient according to the indoor temperature of the user, so that the prediction precision of the heat supply temperature is effectively improved.
The present invention has been described using specific terms to describe embodiments of the invention. Such as "first/second embodiment," "an embodiment," and/or "some embodiments" means a feature, structure, or characteristic described in connection with at least one embodiment of the invention. Therefore, it is emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, some of the features, structures, or characteristics of one or more embodiments of the present invention may be combined as suitable.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The foregoing is illustrative of the present invention and is not to be construed as limiting thereof. Although a few exemplary embodiments of this invention have been described, those skilled in the art will readily appreciate that many modifications are possible in the exemplary embodiments without materially departing from the novel teachings and advantages of this invention. Accordingly, all such modifications are intended to be included within the scope of this invention as defined in the claims. It is to be understood that the foregoing is illustrative of the present invention and is not to be construed as limited to the specific embodiments disclosed, and that modifications to the disclosed embodiments, as well as other embodiments, are intended to be included within the scope of the appended claims. The invention is defined by the claims and their equivalents.
Claims (4)
1. A heat exchange station heat supply regulation and control system, its characterized in that, the system includes: the intelligent electric valve, the temperature collector, the hot station collection regulation and control unit and the meteorological monitoring unit;
the intelligent electric valve is arranged at one end of the primary network water supply pipeline close to the heat exchange station; the primary network water supply pipeline is a water supply pipeline between a heat source plant and a heat exchange station;
the temperature collector is arranged at one end, close to the heat exchange station, of the secondary network water supply pipeline, is connected with the heat station collecting and regulating unit and is used for collecting the real-time water supply temperature of the heat exchange station; the secondary network water supply pipeline is a water supply pipeline from the heat exchange station to the heat supply area;
the weather monitoring unit is used for acquiring real-time outdoor air temperature or directly acquiring local outdoor air temperature from a weather forecast system of a weather department and uploading the outdoor air temperature to the cloud server;
the cloud server calculates theoretical water supply temperature by using the following formula according to the outdoor air temperature, and sends the theoretical water supply temperature to the hot station acquisition regulation and control unit:
T 1 ＝T 0 -kΔT
wherein, T 1 For theoretical supply water temperature, T 0 The method comprises the following steps of (1) setting an empirical preset value of basic water supply temperature corresponding to the indoor temperature reaching the standard in an area where a heat exchange station is located at 0 ℃, wherein k is a heat preservation coefficient, and delta T is the outdoor temperature;
the thermal station acquisition regulation and control unit regulates the opening of the intelligent electric valve according to the theoretical water supply temperature and the real-time water supply temperature so as to enable the real-time water supply temperature to reach the theoretical water supply temperature;
the system also comprises an intelligent temperature collector;
the intelligent temperature collector is arranged indoors of each user and used for collecting the indoor temperature of the user and uploading the indoor temperature to the cloud server;
the cloud server calculates the indoor average temperature according to the indoor temperature; if the indoor average temperature of a plurality of statistical periods is different from the standard indoor temperature, but the temperature difference between the indoor average temperature of the statistical periods and the standard indoor temperature is kept unchanged, determining the empirical preset value T of the basic water supply temperature 0 The presetting is incorrect;
when the empirical preset value T of the basic water supply temperature is determined 0 When the preset is incorrect, the cloud server utilizes the basic water supply temperature experience preset value T 0 Subtracting the temperature difference to obtain the empirical regulation value T of the basic water supply temperature 0 '；
The cloud server regulates and controls the value T according to the experience of the basic water supply temperature 0 ' calculating a theoretical water supply regulation and control temperature and the outdoor air temperature, and sending the theoretical water supply regulation and control temperature to the thermal station acquisition regulation and control unit;
the thermal station acquisition regulation and control unit regulates the opening of the intelligent electric valve according to the theoretical water supply regulation and control temperature and the real-time water supply temperature so that the real-time water supply temperature reaches the theoretical water supply regulation and control temperature.
2. A heat exchange station heating regulation and control system according to claim 1,
the cloud server calculates the indoor average temperature according to the indoor temperature; if the indoor average temperature of a plurality of statistical periods is different from the standard indoor temperature, and the temperature difference between the indoor average temperature of the statistical periods and the standard indoor temperature is different, determining that the heat preservation coefficient k is set to be wrong;
when the heat preservation coefficient k is determined to be incorrect, the hot station acquisition regulation and control unit uploads the real-time water supply temperature to the cloud server;
the cloud server calculates and adjusts the heat preservation coefficient k according to the outdoor air temperature and the real-time water supply temperature, and the formula is as follows:
wherein, T' 1 For supplying water temperature, T, in real time 0 And the empirical preset value of the basic water supply temperature is the corresponding standard indoor temperature of the air temperature of 0 ℃ in the area where the heat exchange station is located, and delta T is the outdoor air temperature.
3. A heat supply regulation and control method for a heat exchange station is characterized by comprising the following steps:
acquiring the real-time water supply temperature of a heat exchange station;
acquiring outdoor air temperature;
calculating a theoretical water supply temperature according to the outdoor air temperature by using the following formula:
T 1 ＝T 0 -kΔT
wherein, T 1 To the theoretical supply water temperature, T 0 The method comprises the following steps of (1) setting an empirical preset value of basic water supply temperature corresponding to the temperature of 0 ℃ in an area where a heat exchange station is located and reaching an indoor temperature, wherein k is a heat preservation coefficient, and delta T is an outdoor temperature;
adjusting the opening of an intelligent electric valve according to the theoretical water supply temperature and the real-time water supply temperature so as to enable the real-time water supply temperature to reach the theoretical water supply temperature; the intelligent electric valve is arranged at one end of the primary network water supply pipeline close to the heat exchange station;
the method further comprises the following steps:
acquiring the indoor temperature of each user;
calculating an indoor average temperature according to the indoor temperature; if the indoor average temperature of a plurality of statistical periods reaches the standard indoorThe temperatures are different, but the temperature difference between the indoor average temperature and the standard indoor temperature in a plurality of statistical periods is kept unchanged, and the empirical preset value T of the basic water supply temperature is determined 0 The presetting is incorrect;
when the empirical preset value T of the basic water supply temperature is determined 0 When the preset is incorrect, the empirical preset value T of the basic water supply temperature is utilized 0 Subtracting the temperature difference to obtain the empirical regulation value T of the basic water supply temperature 0 '；
According to the basic water supply temperature experience regulation value T 0 ' calculating theoretical water supply regulation and control temperature according to the outdoor air temperature;
and adjusting the opening of the intelligent electric valve according to the theoretical water supply regulation temperature and the real-time water supply temperature so as to enable the real-time water supply temperature to reach the theoretical water supply regulation temperature.
4. A heat exchange station heat supply regulation and control method according to claim 3,
if the indoor average temperature of the plurality of statistical periods is different from the standard indoor temperature and the temperature difference between the indoor average temperature of the plurality of statistical periods and the standard indoor temperature is different, determining that the heat preservation coefficient k is set to be wrong;
when the heat preservation coefficient k is determined to be set with an error, calculating and adjusting the heat preservation coefficient k according to the outdoor air temperature and the real-time water supply temperature, wherein the formula is as follows:
wherein, T' 1 For supplying water temperature, T, in real time 0 The empirical preset value of the basic water supply temperature is the corresponding standard indoor temperature of the air temperature of 0 ℃ in the area where the heat exchange station is located, and delta T is the outdoor air temperature.
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