CN111649382A - Central heating control method and device - Google Patents
Central heating control method and device Download PDFInfo
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- CN111649382A CN111649382A CN202010611074.4A CN202010611074A CN111649382A CN 111649382 A CN111649382 A CN 111649382A CN 202010611074 A CN202010611074 A CN 202010611074A CN 111649382 A CN111649382 A CN 111649382A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 222
- 230000001276 controlling effect Effects 0.000 description 16
- 230000003247 decreasing effect Effects 0.000 description 8
- 238000001816 cooling Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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Classifications
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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
- F24D19/1012—Arrangement or mounting of control or safety devices for water heating systems for central heating by regulating the speed of a pump
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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
Abstract
The invention discloses a centralized heating control method and a device. Belongs to the field of central heating, and the method comprises the following steps: the data acquisition module acquires water temperature, water pressure and opening information of a temperature control valve of the primary pipe network and the secondary pipe network; the central processor processes the water temperature, the water pressure and the opening information of the temperature control valve to obtain display information which can be displayed by a human-computer interface; the control module compares the user operation instruction, the water temperature and the water pressure of the primary pipe network and the secondary pipe network, the boiler outlet water temperature and the opening information of the temperature control valve with corresponding set values, and sends a temperature adjusting instruction to the central processor according to a comparison result; and the command sending module controls the temperature of the heat supply source according to the temperature adjusting command. The invention has the advantages that the invention can realize remote control of the temperature of heat supply, does not need operators to collect data on site or adjust the opening degree of the temperature control valve on site, and can monitor and control the temperature in real time, thereby improving the efficiency of temperature control.
Description
Technical Field
The invention relates to the field of central heating, in particular to a central heating control method and a central heating control device.
Background
The central heating is a way of supplying steam and hot water generated by a central heat source to heat required for production, heating and life of a city (town) or a part of a region through a pipe network. Central heating is one of the infrastructures of modern cities and is also an important facility of urban utilities. In order to reduce coal pollution, heat supply in northern areas is gradually excessive from scattered heat supply of the prior coal-fired boiler to centralized heat supply of a gas-fired boiler and an electric boiler in winter.
The method for controlling the temperature in a centralized manner in the related art comprises the steps of manually controlling the opening of the boiler or controlling the temperature of the boiler according to the rotating speed of a water pump with an empirical value and the like, so that the purpose of controlling the heating temperature is achieved.
However, the control precision is reduced by manually controlling the opening of the boiler or controlling the rotating speed of the water pump according to an empirical value, and the instant control of the heating temperature cannot be realized, so that the control efficiency is low.
Disclosure of Invention
The invention aims to disclose a centralized heating control method and a device. The technical problems that the control precision is reduced by controlling the opening of the boiler manually or controlling the rotating speed of the water pump according to an empirical value, the instant control of the heat supply temperature cannot be realized, and the control efficiency is low can be solved.
The invention is realized by the following technical scheme:
in one aspect, a central heating control method is provided, and the method includes:
step 1, a data acquisition module acquires water temperature, water pressure, boiler outlet water temperature and opening information of a temperature control valve of a primary pipe network and a secondary pipe network;
step 2, the control module compares the user operation instruction, the water temperature and the water pressure of the primary pipe network and the secondary pipe network, the boiler outlet water temperature and the opening information of the temperature control valve with corresponding set values, and sends a temperature adjusting instruction to the central processor according to a comparison result;
and 3, controlling the temperature of the heat supply source by the command sending module according to the temperature adjusting instruction.
In an alternative embodiment, step 2 comprises: step 21 and step 22;
step 21, if the outlet water temperature of the secondary pipe network is smaller than the set upper temperature limit value, acquiring the set circulating pump frequency of the primary pipe network and acquiring the return water pressure of the primary pipe network;
and step 22, sending a temperature rise instruction according to the set circulating pump frequency of the primary pipe network and the return water pressure of the primary pipe network.
In an alternative embodiment, step 22 comprises:
and if the set circulating pump frequency of the primary pipe network is smaller than the set upper limit value of the circulating pump frequency and the return water pressure of the primary pipe network is smaller than the set upper limit value of the return water pressure, increasing the set circulating pump frequency and sending a temperature increase instruction according to the increased set circulating pump frequency.
In an optional embodiment, step 22 further comprises:
step 221, if the set circulating pump frequency of the primary pipe network is greater than or equal to the set circulating pump frequency upper limit value, acquiring opening information of a temperature control valve and acquiring boiler outlet water temperature;
and step 222, sending a temperature increase instruction according to the opening information of the temperature control valve and the boiler outlet water temperature.
In an alternative embodiment, step 222 includes:
and if the opening of the temperature control valve is smaller than the set upper limit value of the opening of the temperature control valve, expanding the opening of the temperature control valve and sending a temperature increase instruction according to the temperature control valve after the opening is expanded.
In an alternative embodiment, step 222 further comprises:
if the opening degree of the temperature control valve is larger than or equal to the set upper limit value of the opening degree of the temperature control valve, and the boiler outlet water temperature is smaller than the set upper limit value of the boiler outlet water temperature, the boiler outlet water temperature is increased, and a temperature rising instruction is sent according to the increased boiler outlet water temperature.
In an optional embodiment, step 2 further comprises: step 23 and step 24;
step 23, if the outlet water temperature of the secondary pipe network is greater than or equal to the set upper temperature limit value, acquiring the set circulating pump frequency of the primary pipe network and acquiring the return water pressure of the primary pipe network;
and 24, sending a temperature reduction instruction according to the frequency of the circulating pump of the primary pipe network and the return water pressure of the primary pipe network.
In an alternative embodiment, step 24 comprises:
and if the set circulating pump frequency of the primary pipe network is greater than the set upper limit value of the circulating pump frequency and the return water pressure of the primary pipe network is greater than the set upper limit value of the return water pressure, reducing the set circulating pump frequency and sending temperature reduction information according to the set circulating pump frequency after reduction.
In an optional embodiment, step 24 further comprises:
241, if the set circulating pump frequency of the primary pipe network is not greater than the set upper limit value of the circulating pump frequency, acquiring opening information of a temperature control valve and acquiring the temperature of boiler outlet water;
and 242, sending a temperature increase instruction according to the opening information of the temperature control valve and the boiler outlet water temperature.
In an alternative embodiment, step 242 includes:
and if the opening of the temperature control valve is larger than the set upper limit value of the opening of the temperature control valve, reducing the opening of the temperature control valve, and sending temperature reduction information according to the temperature control valve with the reduced opening.
In an optional embodiment, step 242 further comprises:
if the opening of the temperature control valve is smaller than the set upper limit value of the opening of the temperature control valve and the boiler outlet water temperature is larger than the set lower limit value of the boiler outlet water temperature, the boiler outlet water temperature is reduced, and temperature reduction information is sent according to the reduced boiler outlet water temperature.
In another aspect, there is provided a central heating control apparatus, including:
the data acquisition module is used for acquiring water temperature, water pressure and opening information of the temperature control valves of the primary pipe network and the secondary pipe network;
the control module is used for comparing the user operation instruction, the water temperature and water pressure of the primary pipe network and the secondary pipe network and the opening information of the temperature control valves with corresponding set values and sending a temperature adjusting instruction to the central processor according to a comparison result;
and the command sending module is used for controlling the temperature of the heat supply source according to the temperature adjusting command.
In an alternative embodiment, a control module includes: the first control unit and the second control unit;
the first control unit is used for acquiring the set circulating pump frequency of the primary pipe network and acquiring the return water pressure of the primary pipe network if the outlet water temperature of the secondary pipe network is smaller than the set upper temperature limit value;
and the second control unit is used for sending a temperature rise instruction according to the frequency of the circulating pump of the primary pipe network and the return water pressure of the primary pipe network.
In an optional embodiment, the second control unit is configured to increase the set circulation pump frequency if the set circulation pump frequency of the primary pipe network is less than the set upper limit value of the circulation pump frequency and the return water pressure of the primary pipe network is less than the set upper limit value of the return water pressure, and issue a temperature increase instruction according to the increased set circulation pump frequency.
In an optional embodiment, the second control unit is configured to, if a set circulation pump frequency of the primary pipe network is greater than or equal to a set upper limit value of the circulation pump frequency, obtain opening information of the temperature control valve, and obtain a boiler outlet water temperature;
and sending a temperature rise instruction according to the opening information of the temperature control valve and the boiler outlet water temperature.
In an alternative embodiment, the second control unit is configured to expand the opening degree of the thermo-valve if the opening degree of the thermo-valve is smaller than a set upper limit value of the opening degree of the thermo-valve, and issue a temperature increase instruction according to the thermo-valve after the expansion of the opening degree.
In an optional embodiment, the second control unit is configured to increase the boiler outlet water temperature if the opening of the thermostat valve is greater than or equal to a set upper limit of the opening of the thermostat valve and the boiler outlet water temperature is less than a set upper limit of the temperature of the boiler outlet water, and issue a temperature increase instruction according to the increased boiler outlet water temperature.
In an optional embodiment, the control module further comprises: a third control unit and a fourth control unit;
the third control unit is used for acquiring the set circulating pump frequency of the primary pipe network and acquiring the return water pressure of the primary pipe network if the outlet water temperature of the secondary pipe network is greater than or equal to the set upper temperature limit value;
and the fourth control unit is used for sending a temperature reduction instruction according to the frequency of the circulating pump of the primary pipe network and the return water pressure of the primary pipe network.
In an optional embodiment, the fourth control unit is configured to, if the set circulation pump frequency of the primary pipe network is greater than a set upper limit value of the circulation pump frequency and the return water pressure of the primary pipe network is greater than a set upper limit value of the return water pressure, decrease the set circulation pump frequency, and send information of decreasing the temperature according to the set circulation pump frequency after the decrease.
In an optional embodiment, the fourth control unit is configured to, if a set circulation pump frequency of the primary pipe network is not greater than a set upper limit value of the circulation pump frequency, obtain opening information of the temperature control valve, and obtain a boiler outlet water temperature;
and sending a temperature rise instruction according to the opening information of the temperature control valve and the boiler outlet water temperature.
In an alternative embodiment, the fourth control unit is configured to decrease the opening degree of the temperature control valve if the opening degree of the temperature control valve is greater than the set upper limit value of the opening degree of the temperature control valve, and to issue the temperature decrease information according to the temperature control valve with decreased opening degree.
In an optional embodiment, the fourth control unit is configured to, if the temperature-controlled valve opening is smaller than the set upper limit value of the temperature-controlled valve opening and the boiler outlet water temperature is greater than the set lower limit value of the boiler outlet water temperature, decrease the boiler outlet water temperature, and send information of decreasing the temperature according to the decreased boiler outlet water temperature.
The method provided by the embodiment of the invention at least has the following beneficial effects:
according to the method provided by the embodiment of the invention, the data acquisition module is used for acquiring the water supply temperature, the water supply pressure and the opening information of the temperature control valve of the primary pipe network and the secondary pipe network, so that the real-time temperature and pressure of the primary pipe network and the secondary pipe network can be obtained through the information, and the control module sends temperature regulation information to the central processor according to the operation instruction after receiving the operation instruction; the command sending module adjusts parameters such as the opening of the temperature control valve and the reduction or increase of the boiler outlet water temperature through the temperature adjusting command, and further achieves the purpose of controlling heat supply. The method provided by the embodiment of the invention can realize remote control of the temperature of heat supply, does not need operators to collect data on site or adjust the opening degree of the temperature control valve on site, and can monitor and control the temperature in real time, thereby improving the efficiency of temperature control.
Drawings
FIG. 1 is a schematic flow chart of a central heating control method according to an embodiment of the present invention;
FIG. 2 is a flow chart of a control method of a control module according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a central heating control device according to an embodiment of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
In one aspect, there is provided a central heating control method, as shown in fig. 1, the method including:
step 1, a data acquisition module acquires water temperature, water pressure and opening information of a temperature control valve of a primary pipe network and a secondary pipe network.
And 102, comparing the user operation instruction, the water temperature and the water pressure of the primary pipe network and the secondary pipe network, the boiler outlet water temperature and the opening information of the temperature control valve with corresponding set values by the control module, and sending a temperature adjusting instruction to the central processor according to a comparison result.
And 103, controlling the temperature of the heat supply source by the command sending module according to the temperature adjusting command.
The method provided by the embodiment of the invention at least has the following beneficial effects:
according to the method provided by the embodiment of the invention, the data acquisition module is used for acquiring the water supply temperature, the water supply pressure and the opening information of the temperature control valve of the primary pipe network and the secondary pipe network, so that the real-time temperature and pressure of the primary pipe network and the secondary pipe network can be obtained through the information, and the information is processed into the display information which can be displayed by the human-computer interface through the central processor, so that a user can know the temperature and pressure conditions of the primary pipe network and the secondary pipe network in real time through the human-computer interface; the man-machine interface can input an operation instruction according to the displayed information, and the control module sends temperature regulation information to the central processor according to the operation instruction after receiving the operation instruction; the command sending module adjusts parameters such as the opening of the temperature control valve and the reduction or increase of the boiler outlet water temperature through the temperature adjusting command, and further achieves the purpose of controlling heat supply. The method provided by the embodiment of the invention can realize remote control of the temperature of heat supply, does not need operators to collect data on site or adjust the opening degree of the temperature control valve on site, and can monitor and control the temperature in real time, thereby improving the efficiency of temperature control.
The method and apparatus provided by embodiments of the present invention will be further described below by way of alternative embodiments.
In step 101, the primary pipe network is a heat source plant for central heating and a conveying pipeline from the heat source plant to a valve at a place (interface) where each heat unit enters the house. The secondary pipe network refers to a pipeline between each single building in each heat utilization unit, for example, a pipeline for conveying hot water from a joint of a community and the primary pipe network to buildings of each building, wherein 10 buildings are arranged in the community.
As an example, the data acquisition module provided in the embodiment of the present invention may be a data acquisition device. The primary pipe network and the secondary pipe network are provided with a temperature sensor, a pressure sensor, a temperature control valve, a flowmeter and the like. The temperature sensor, the pressure sensor, the temperature control valve, the flowmeter and the like on the primary pipe network and the secondary pipe network are connected through the data acquisition unit, so that the temperature, the pressure, the opening information of the temperature control valve and the like on the primary pipe network and the secondary pipe network are acquired in real time.
Further, since the outdoor temperature may also affect the control of the central heating, as an example, if the outdoor temperature is low, the indoor temperature may be affected, so that the indoor temperature is at a low level, and the central heating temperature may need to be controlled to be high; if the outdoor temperature is higher, the indoor temperature can be influenced, the indoor temperature is enabled to be at a higher level, and the temperature of centralized heating needs to be controlled to be lower at the moment, so that the cost of heating is reduced while the heating is achieved, and resources are saved.
It should be noted that the water temperature provided by the embodiment of the present invention includes an outlet water temperature of the primary pipe network, an outlet water temperature of a boiler connected to the primary pipe network, a return water temperature, an outlet water temperature of the secondary pipe network, and a return water pressure. The water pressure of the primary pipe network refers to the return water pressure of the primary pipe network. The temperature control valve is a temperature control valve and is a typical application of a flow regulating valve in the field of temperature control, and the basic principle of the temperature control valve is as follows: the outlet temperature of the equipment is controlled by controlling the inlet flow of a heat exchanger, an air conditioning unit or other heat and cold equipment and primary heat (cold) medium. If the load changes, the flow is adjusted by changing the opening degree of the valve to eliminate the influence caused by the fluctuation of the load and restore the temperature to the set value. Therefore, the opening degree of the temperature control valve provided by the embodiment of the invention is the opening degree of the temperature control valve.
In an alternative embodiment, the central processor processes the information collected in step 101, so that the processed information can be displayed through a human-machine interface. It should be noted that the human-machine interface provided by the embodiment of the present invention may be an interface of a terminal display interface. Such as interfaces for display screens of mobile phones, computers, and the like. And receiving information through a human-computer interface of the terminal, and displaying the display information through the human-computer interface. As an example, the data received by the human-machine interface may include temperature data, pressure data, opening data of the thermostatic valve, temperature data, pressure data of the temperature data of the two-network pipeline, opening data of the thermostatic valve, and the like. Namely, the operator can clearly see the real-time data of the network management line and the two network pipelines through the man-machine interface. And input an operation instruction according to the display data.
As an example, if the temperature of one network pipeline and the temperature of two network pipelines are high, the instruction for increasing the temperature can be input through the man-machine interface. If the temperature of one network management and the two network pipelines is lower, the temperature reduction instruction can be input through the man-machine interface. The embodiment of the present invention is not limited to the input instruction.
After an operation command is input through the man-machine interface, the control module determines to send out temperature adjusting information according to the received operation command, the temperature and pressure of the first network pipeline and the second network pipeline and the opening information of the temperature control valve, wherein the temperature and pressure of the first network pipeline and the second network pipeline are acquired by the data acquisition unit.
It can be understood that the data acquisition module provided by the embodiment of the invention is connected with the central processor, the central processor is connected with the human-computer interface, the human-computer interface is connected with the control module, the control module is connected with the central processor, and the central processor is further connected with the command sending module.
It should be noted that the set upper limit value and the set lower limit value of the temperature provided in the embodiment of the present invention include a set upper limit value of the temperature of the primary pipe network outlet water, a set upper limit value of the temperature of the primary pipe network return water, a set upper limit value of the temperature of the secondary pipe network water supply, and a set upper limit value of the temperature of the secondary pipe network return water. The upper limit value of the temperature set by the outlet water of the primary pipe network, the upper limit value of the temperature set by the return water of the primary pipe network, the upper limit value of the temperature set by the water supply of the secondary pipe network and the upper limit value of the temperature set by the return water of the secondary pipe network are fixed in the upper limit value and the lower limit value of a central heating system, that is, if the central heating system is determined, the upper limit value of the temperature set by the outlet water and the lower limit value of the outlet water temperature required by the system are determined, the upper limit value and the lower limit value of the temperature set by the outlet water of different central heating systems are different and can be determined according to the practical application condition.
The set upper limit value and the set lower limit value of the circulating pump frequency provided by the embodiment of the invention are also determined according to the performance and the model of the circulating pump, and the embodiment of the invention does not limit the upper limit value and the lower limit value.
The set upper limit value and the set lower limit value of the return water pressure in the central heating system provided by the embodiment of the invention are fixed, that is, if the set upper limit value and the set lower limit value of the return water pressure required by the central heating system are determined after the central heating system is determined, the set upper limit value and the set lower limit value of the return water pressure in different central heating systems are different and can be determined according to the practical application condition, and the invention does not limit the upper limit value and the lower limit value.
In an alternative embodiment, step 2 comprises: step 21 and step 22. Referring to fig. 2, step 24 provided by an embodiment of the present invention will be further explained.
And 21, if the outlet water temperature of the secondary pipe network is lower than the set upper temperature limit value, acquiring the set circulating pump frequency of the primary pipe network and acquiring the return water pressure of the primary pipe network.
It should be noted that, if the outlet water temperature of the secondary pipe network is lower than the set upper limit temperature value, it is indicated that temperature rise is required, but if temperature rise is performed only according to the outlet water temperature of the secondary pipe network, the adopted measures for temperature reduction are not proper or the temperature rise effect is not good. For example, if the opening degree of the temperature control valve needs to be increased, the frequency of the circulation pump is increased without increasing the opening degree of the temperature control valve. Thus, if the circulation frequency of the circulation pump exceeds the set upper limit value of the circulation pump frequency, the frequency of the circulation pump is not reduced, and the circulation pump is overloaded or fails.
The set upper limit temperature value herein refers to a temperature required for the secondary pipe network to supply heat to the user. If the temperature of the secondary pipe network is lower than the set upper temperature limit value, the temperature of the secondary pipe network is lower, and sufficient heat cannot be provided for direct users. Therefore, the frequency of the circulation pump connected to the primary pipe network can be obtained. Because the circulating pump returns the return water in the primary pipeline to the boiler for cyclic utilization, the frequency of the circulating pump has great influence on the heat transported from the primary pipeline to the secondary pipeline. The water outlet temperature of the secondary pipe network can be adjusted by adjusting the circulating pump on the primary pipe network, so that the control of the heat supply load of users is achieved.
And step 21, sending a temperature rise instruction according to the frequency of a circulating pump of the primary pipe network and the return water pressure of the primary pipe network.
In an alternative embodiment, step 22 comprises: and if the set circulating pump frequency of the primary pipe network is smaller than the set upper limit value of the circulating pump frequency and the return water pressure of the primary pipe network is smaller than the set upper limit value of the return water pressure, increasing the set circulating pump frequency and sending a temperature increase instruction according to the increased set circulating pump frequency.
If the outlet water temperature of the secondary pipe network is smaller than the set upper limit value of the temperature, the set circulating pump frequency of the primary pipe network is obtained, the set circulating pump frequency of the primary pipe network is compared with the set upper limit value of the circulating pump frequency, if the set circulating pump frequency of the primary pipe network is smaller than the set upper limit value of the circulating pump frequency, the return water pressure of the primary pipe network is further obtained, whether the return water pressure of the primary pipe network is smaller than the set upper limit value of the return water pressure is compared, if the return water pressure of the primary pipe network is smaller than the set upper limit value of the return water pressure, the frequency of the circulating pump needs to be increased, the frequency of the circulating pump is increased.
In an optional embodiment, step 22 further comprises: if the set circulating pump frequency of the primary pipe network is greater than or equal to the set upper limit value of the circulating pump frequency, acquiring the opening information of the temperature control valve, comparing the opening of the temperature control valve with the set opening value of the temperature control valve, if the opening of the temperature control valve is smaller than the set upper limit value of the opening of the temperature control valve, expanding the opening of the temperature control valve, and increasing the temperature by expanding the opening of the temperature control valve.
Here, the opening setting value of the thermo-valve is different according to different thermo-valves, that is, the openings of different types of thermo-valves are different, and here, the opening setting value of the thermo-valve is the maximum opening value and the minimum opening value of the opening of the thermo-valve. The embodiment of the invention does not limit the set value of the temperature control valve.
In an optional embodiment, step 22 further comprises:
and if the set circulating pump frequency of the primary pipe network is greater than or equal to the set upper limit value of the circulating pump frequency, acquiring the opening information of the temperature control valve and acquiring the outlet water temperature of the boiler.
And sending a temperature rise instruction according to the opening information of the temperature control valve and the boiler outlet water temperature.
If the set circulation pump frequency of the primary pipe network is greater than or equal to the set upper limit value of the circulation pump frequency, the opening information of the temperature control valve and the boiler outlet water temperature are acquired, and if the opening of the temperature control valve is greater than or equal to the set upper limit value of the opening of the temperature control valve, that is, the opening of the temperature control valve is relatively large, a warning of overload of the temperature control valve needs to be sent.
In an alternative embodiment, the step of giving a temperature increase instruction according to the opening information of the thermostatic valve and the boiler outlet water temperature comprises the following steps:
and if the opening of the temperature control valve is smaller than the set upper limit value of the opening of the temperature control valve, expanding the opening of the temperature control valve and sending a temperature increase instruction according to the temperature control valve after the opening is expanded.
In an optional embodiment, the issuing of the temperature increase instruction according to the opening information of the thermostatic valve and the boiler outlet water temperature further comprises:
and if the opening of the temperature control valve is greater than or equal to the set upper limit value of the opening of the temperature control valve and the boiler outlet water temperature is less than the set upper limit value of the boiler outlet water temperature, increasing the boiler outlet water temperature and sending a temperature increase instruction according to the increased boiler outlet water temperature.
It should be noted that, if the opening of the temperature control valve is greater than or equal to the set upper limit of the opening of the temperature control valve, the outlet water temperature of the boiler needs to be compared with the set upper limit of the temperature, and if the outlet water temperature of the boiler is less than the set upper limit of the temperature, the outlet water temperature of the boiler can be increased to achieve the purpose of increasing the temperature.
If the opening of the temperature control valve is larger than or equal to the set upper limit value of the opening of the temperature control valve, the outlet water temperature of the boiler is found to be larger than or equal to the set upper limit value of the temperature after the outlet water temperature of the boiler is compared with the set upper limit value of the temperature, and at the moment, an overload warning needs to be sent out.
In an optional implementation manner, the control module sends a temperature adjustment instruction to the central processor according to a user operation instruction and information of water temperature, water pressure, and opening degree of the temperature control valve of the primary pipe network and the secondary pipe network, and further includes:
if the outlet water temperature of the secondary pipe network is greater than or equal to the set upper temperature limit value, acquiring the set circulating pump frequency of the primary pipe network and acquiring the return water pressure of the primary pipe network;
and sending a temperature reduction instruction according to the frequency of a circulating pump of the primary pipe network and the return water pressure of the primary pipe network.
It should be noted that if the outlet water temperature of the secondary pipe network is greater than or equal to the set upper temperature limit value, it is indicated that cooling is required, but if cooling is performed only according to the outlet water temperature of the secondary pipe network, the cooling measures taken may be inappropriate or the cooling effect is poor. For example, if the opening degree of the temperature control valve needs to be decreased, the opening degree of the temperature control valve is not decreased but the frequency of the circulation pump is decreased. In this way, if the opening degree of the thermo-valve has exceeded the upper limit value and has not been reduced yet, it may cause overload or malfunction of the thermo-valve. Or when the temperature of the boiler outlet water needs to be reduced, the temperature of the boiler outlet water is not reduced, but the set circulating pump frequency is reduced, so that the cooling effect can be reduced, or the cost is increased.
Therefore, the embodiment of the invention achieves the purpose of centralized heating temperature control through multiple layers and multiple directions, such as the return water temperature of the secondary pipe network, the opening of the temperature control valve, the boiler outlet water temperature and the like.
As an example, if the outlet water temperature of the secondary pipe network is greater than or equal to the set upper temperature limit, the set circulation pump frequency of the primary pipe network is obtained, the set circulation pump frequency of the primary pipe network is compared, if the set circulation pump frequency of the primary pipe network is greater than the set lower circulation pump frequency limit, the set circulation pump frequency of the primary pipe network is compared with the set lower circulation pump frequency limit, if the set circulation pump frequency of the primary pipe network is greater than the set lower circulation pump frequency limit, the return water pressure of the primary pipe network is obtained again, if the return water pressure of the primary pipe network is greater than the set upper return water pressure limit, the set circulation pump frequency is reduced, and the temperature reduction information is sent according to the reduced set circulation pump frequency.
In an optional embodiment, the step of sending the temperature reduction instruction according to the frequency of the circulating pump of the primary pipe network and the return water pressure of the primary pipe network comprises the following steps:
if the set circulating pump frequency of the primary pipe network is greater than the set upper limit value of the circulating pump frequency and the return water pressure of the primary pipe network is greater than the set upper limit value of the return water pressure, the set circulating pump frequency is reduced, and temperature reduction information is sent according to the set circulating pump frequency after the temperature reduction.
It should be noted that, if the outlet water temperature of the secondary pipe network is greater than or equal to the set upper temperature limit, the set circulating pump frequency of the primary pipe network is required to be greater than or equal to the set lower circulating pump frequency limit, and the return water pressure of the primary pipe network is greater than the set upper return water pressure limit, that is, the two conditions are all satisfied, the set circulating pump frequency can be reduced, and the temperature reduction information is sent according to the set circulating pump frequency after the temperature reduction.
In an optional embodiment, the sending of the instruction of temperature reduction according to the frequency of the circulation pump of the primary pipe network and the return water pressure of the primary pipe network further comprises:
if the set circulating pump frequency of the primary pipe network is not greater than the set upper limit value of the circulating pump frequency, acquiring opening information of a temperature control valve and acquiring the temperature of boiler outlet water;
and sending a temperature rise instruction according to the opening information of the temperature control valve and the boiler outlet water temperature.
If the opening degree of the temperature control valve is larger than the lower limit value of the opening degree of the temperature control valve, the water outlet temperature of the boiler is obtained again, and the water outlet temperature of the boiler and the opening degree of the temperature control valve are used for simultaneously judging which mode is used for cooling. Further, if the opening of the temperature control valve is larger than the lower limit value of the opening of the temperature control valve and the outlet water temperature of the boiler is not larger than the lower limit value of the temperature, the boiler needs to be shut down.
In an alternative embodiment, the step of giving a temperature increase instruction according to the opening information of the thermostatic valve and the boiler outlet water temperature comprises the following steps:
and if the opening of the temperature control valve is larger than the set upper limit value of the opening of the temperature control valve, reducing the opening of the temperature control valve, and sending temperature reduction information according to the temperature control valve with the reduced opening.
If the set circulating pump frequency of the primary pipe network is not greater than the set circulating pump frequency upper limit value, the opening information of the temperature control valve is obtained, the opening of the temperature control valve is compared with the opening lower limit value of the temperature control valve, and if the opening of the temperature control valve is greater than the opening lower limit value of the temperature control valve, the temperature can be reduced by reducing the opening of the temperature control valve.
In an optional embodiment, the issuing of the temperature increase instruction according to the opening information of the thermostatic valve and the boiler outlet water temperature further comprises:
if the opening of the temperature control valve is smaller than the set upper limit value of the opening of the temperature control valve and the boiler outlet water temperature is larger than the set lower limit value of the boiler outlet water temperature, the boiler outlet water temperature is reduced, and temperature reduction information is sent according to the reduced boiler outlet water temperature.
It should be noted that, the method provided by the embodiment of the present invention can store the water temperature, water pressure, and opening degree information of the temperature control valve of the primary pipe network and the secondary pipe network, and can continuously optimize the set value in the system according to the stored water temperature, water pressure, and opening degree information of the temperature control valve of the primary pipe network and the secondary pipe network, thereby improving the accuracy of the centralized heat supply control.
In another aspect, there is provided a central heating control apparatus, as shown in fig. 3, including:
the data acquisition module 201 is used for acquiring water temperature, water pressure and opening information of a temperature control valve of the primary pipe network and the secondary pipe network;
the control module 202 is used for sending a temperature adjusting instruction to the central processor according to the user operation instruction and the water temperature, water pressure and opening information of the temperature control valves of the primary pipe network and the secondary pipe network;
and the command sending module 203 is used for controlling the temperature of the heat supply source according to the temperature adjusting instruction.
In an optional implementation manner, the control module 202 is configured to compare the user operation instruction, the water temperatures and water pressures of the primary pipe network and the secondary pipe network, the boiler outlet water temperature, and the opening degree information of the temperature control valve with corresponding set values, and send a temperature adjustment instruction to the central processor according to a comparison result;
and sending a temperature rise instruction according to the frequency of a circulating pump of the primary pipe network and the return water pressure of the primary pipe network.
In an alternative embodiment, the control module 202 is configured to increase the set circulation pump frequency if the set circulation pump frequency of the primary pipe network is less than the set upper limit value of the circulation pump frequency and the return water pressure of the primary pipe network is less than the set upper limit value of the return water pressure, and issue a temperature increase instruction according to the increased set circulation pump frequency.
In an optional embodiment, the control module 202 is configured to, if a set circulation pump frequency of the primary pipe network is greater than or equal to a set upper limit value of the circulation pump frequency, obtain opening information of the temperature control valve, and obtain a boiler outlet water temperature;
and sending a temperature rise instruction according to the opening information of the temperature control valve and the boiler outlet water temperature.
In an optional embodiment, the control module is configured to expand the opening degree of the thermo-valve if the opening degree of the thermo-valve is smaller than a set upper limit value of the opening degree of the thermo-valve, and issue a temperature increase instruction according to the thermo-valve after the expansion of the opening degree.
In an optional embodiment, the control module 202 is configured to increase the boiler outlet water temperature if the opening of the thermostatic valve is greater than or equal to the set upper limit of the opening of the thermostatic valve and the boiler outlet water temperature is less than the set upper limit of the temperature of the boiler outlet water, and issue a temperature increase instruction according to the increased boiler outlet water temperature.
In an optional embodiment, the control module 202 is configured to, if the outlet water temperature of the secondary pipe network is greater than or equal to a set upper temperature limit value, obtain a set circulation pump frequency of the primary pipe network, and obtain a return water pressure of the primary pipe network;
and sending a temperature reduction instruction according to the frequency of a circulating pump of the primary pipe network and the return water pressure of the primary pipe network.
In an optional embodiment, the control module 202 is configured to reduce the set circulation pump frequency if the set circulation pump frequency of the primary pipe network is greater than the set upper limit of the circulation pump frequency and the return water pressure of the primary pipe network is greater than the set upper limit of the return water pressure, and send the temperature reduction information according to the set circulation pump frequency after the temperature reduction.
In an optional embodiment, the control module is configured to, if a set circulation pump frequency of the primary pipe network is not greater than a set upper limit value of the circulation pump frequency, obtain opening information of the temperature control valve, and obtain a boiler outlet water temperature;
and sending a temperature rise instruction according to the opening information of the temperature control valve and the boiler outlet water temperature.
In an alternative embodiment, the control module 202 is configured to decrease the opening degree of the temperature control valve if the opening degree of the temperature control valve is greater than the set upper limit value of the opening degree of the temperature control valve, and send the temperature decrease information according to the temperature control valve with decreased opening degree.
In an optional embodiment, the control module 202 is configured to reduce the boiler outlet water temperature if the temperature control valve opening is smaller than a set upper limit of the temperature control valve opening and the boiler outlet water temperature is greater than a set lower limit of the boiler outlet water temperature, and send a temperature reduction message according to the reduced boiler outlet water temperature.
The device provided by the embodiment of the invention at least has the following beneficial effects:
according to the device provided by the embodiment of the invention, the data acquisition module is used for acquiring the water supply temperature, the water supply pressure and the opening information of the temperature control valve of the primary pipe network and the secondary pipe network, so that the real-time temperature and pressure of the primary pipe network and the secondary pipe network can be obtained through the information, and the information is processed into the display information which can be displayed by the human-computer interface through the central processor, so that a user can know the temperature and pressure conditions of the primary pipe network and the secondary pipe network in real time through the human-computer interface; the man-machine interface can input an operation instruction according to the displayed information, and the control module sends temperature regulation information to the central processor according to the operation instruction after receiving the operation instruction; the command sending module adjusts parameters such as the opening of the temperature control valve and the reduction or increase of the boiler outlet water temperature through the temperature adjusting command, and further achieves the purpose of controlling heat supply. The method provided by the embodiment of the invention can realize remote control of the temperature of heat supply, does not need operators to collect data on site or adjust the opening degree of the temperature control valve on site, and can monitor and control the temperature in real time, thereby improving the efficiency of temperature control.
The above embodiments are merely illustrative of one or more embodiments of the present invention, and the description is specific and detailed, but not intended to limit the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (10)
1. A central heating control method, characterized in that the method comprises:
step 1, a data acquisition module acquires water temperature, water pressure, boiler outlet water temperature and opening information of a temperature control valve of a primary pipe network and a secondary pipe network;
step 2, the control module compares the user operation instruction, the water temperature and the water pressure of the primary pipe network and the secondary pipe network, the boiler outlet water temperature and the opening information of the temperature control valve with corresponding set values, and sends a temperature adjusting instruction to the central processor according to a comparison result;
and 3, controlling the temperature of the heat supply source by the command sending module according to the temperature adjusting instruction.
2. A central heating control method according to claim 1, wherein step 2 comprises: step 21 and step 22;
step 21, if the outlet water temperature of the secondary pipe network is smaller than the set upper temperature limit value, acquiring the set circulating pump frequency of the primary pipe network and acquiring the return water pressure of the primary pipe network;
and step 22, sending a temperature rise instruction according to the set circulating pump frequency of the primary pipe network and the return water pressure of the primary pipe network.
3. A central heating control method according to claim 2, characterized in that step 22 comprises:
and if the set circulating pump frequency of the primary pipe network is smaller than the set upper limit value of the circulating pump frequency and the return water pressure of the primary pipe network is smaller than the set upper limit value of the return water pressure, increasing the set circulating pump frequency and sending a temperature increase instruction according to the increased set circulating pump frequency.
4. A central heating control method according to claim 2, wherein step 22 further comprises:
step 221, if the set circulating pump frequency of the primary pipe network is greater than or equal to the set circulating pump frequency upper limit value, acquiring opening information of a temperature control valve and acquiring boiler outlet water temperature;
and step 222, sending a temperature increase instruction according to the opening information of the temperature control valve and the boiler outlet water temperature.
5. A central heating control method according to claim 4, wherein step 222 comprises:
and if the opening of the temperature control valve is smaller than the set upper limit value of the opening of the temperature control valve, expanding the opening of the temperature control valve and sending a temperature increase instruction according to the temperature control valve after the opening is expanded.
6. A central heating control method according to claim 1, wherein step 2 further comprises: step 23 and step 24;
step 23, if the outlet water temperature of the secondary pipe network is greater than or equal to the set upper temperature limit value, acquiring the set circulating pump frequency of the primary pipe network and acquiring the return water pressure of the primary pipe network;
and 24, sending a temperature reduction instruction according to the frequency of the circulating pump of the primary pipe network and the return water pressure of the primary pipe network.
7. A central heating control method according to claim 6, wherein step 24 comprises:
and if the set circulating pump frequency of the primary pipe network is greater than the set upper limit value of the circulating pump frequency and the return water pressure of the primary pipe network is greater than the set upper limit value of the return water pressure, reducing the set circulating pump frequency and sending temperature reduction information according to the set circulating pump frequency after reduction.
8. A central heating control method according to claim 7, wherein step 24 further comprises:
241, if the set circulating pump frequency of the primary pipe network is not greater than the set upper limit value of the circulating pump frequency, acquiring opening information of a temperature control valve and acquiring the temperature of boiler outlet water;
and 242, sending a temperature increase instruction according to the opening information of the temperature control valve and the boiler outlet water temperature.
9. A central heating control apparatus, characterized in that the apparatus comprises:
the data acquisition module is used for acquiring water temperature, water pressure and opening information of the temperature control valves of the primary pipe network and the secondary pipe network;
the control module is used for comparing the user operation instruction, the water temperature and water pressure of the primary pipe network and the secondary pipe network and the opening information of the temperature control valves with corresponding set values and sending a temperature adjusting instruction to the central processor according to a comparison result;
and the command sending module is used for controlling the temperature of the heat supply source according to the temperature adjusting command.
10. A central heating control apparatus according to claim 9, wherein the control module comprises: the first control unit and the second control unit;
the first control unit is used for acquiring the set circulating pump frequency of the primary pipe network and acquiring the return water pressure of the primary pipe network if the outlet water temperature of the secondary pipe network is smaller than the set upper temperature limit value;
and the second control unit is used for sending a temperature rise instruction according to the frequency of the circulating pump of the primary pipe network and the return water pressure of the primary pipe network.
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| CN112984617A (en) * | 2021-03-17 | 2021-06-18 | 瑞纳智能设备股份有限公司 | Constant heating two-network temperature supply one-network temperature control valve opening adjusting method based on artificial intelligence |
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| CN111649382B (en) | 2023-12-19 |
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