CN111649382B - Central heating control method and device - Google Patents
Central heating control method and device Download PDFInfo
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- CN111649382B CN111649382B CN202010611074.4A CN202010611074A CN111649382B CN 111649382 B CN111649382 B CN 111649382B CN 202010611074 A CN202010611074 A CN 202010611074A CN 111649382 B CN111649382 B CN 111649382B
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 196
- 230000000630 rising effect Effects 0.000 claims description 17
- 230000033228 biological regulation Effects 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 230000001276 controlling effect Effects 0.000 description 16
- 238000001816 cooling Methods 0.000 description 6
- 230000003247 decreasing effect Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007257 malfunction Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010586 diagram Methods 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
- 238000004064 recycling Methods 0.000 description 1
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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Steam Or Hot-Water Central Heating Systems (AREA)
Abstract
The invention discloses a central heating control method and device. Belonging to the field of central heating, the method comprises the following steps: the data acquisition module acquires the water temperature, water pressure and temperature control valve opening information 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 man-machine interface; the control module compares the user operation instruction, the water temperature, the water pressure, the boiler water outlet temperature and the temperature control valve opening degree information of the primary pipe network and the secondary pipe network with corresponding set values, and sends a temperature adjustment instruction to the central processor according to a comparison result; 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 remote control of the heating temperature can be realized, the on-site data acquisition of operators or the on-site adjustment of the opening degree of the temperature control valve and the like are not needed, the temperature can be monitored and controlled in real time, and the efficiency of temperature control is improved.
Description
Technical Field
The invention relates to the field of central heating, in particular to a central heating control method and device.
Background
Central heating refers to a mode of supplying heat required for production, heating and life of a city (town) or a partial area through a pipe network by steam and hot water generated by a central heat source. Central heating is one of the infrastructures of modern cities and is also an important facility for urban utilities. In order to reduce coal pollution, the winter heat supply in northern areas gradually disperses heat supply from the previous coal-fired boiler to the centralized heat supply of the gas-fired boiler and the electric boiler.
The method for controlling the temperature in a centralized manner in the related art comprises the steps of controlling the opening degree of the boiler manually or controlling the temperature of the boiler according to the rotation speed of the water pump with an empirical value and the like, so that the aim of controlling the heat supply temperature is fulfilled.
However, controlling the boiler opening manually or controlling the rotational speed of the water pump according to an empirical value reduces the control accuracy, 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 device. The control method can solve the technical problems that the control accuracy is reduced when the opening of the boiler is controlled manually or the rotating speed of the water pump is controlled according to an empirical value, the instant control of the heating temperature cannot be realized, and the control efficiency is low.
The invention is realized by the following technical scheme:
in one aspect, a central heating control method is provided, which includes:
step 1, a data acquisition module acquires water temperature, water pressure, boiler water outlet temperature and temperature control valve opening information of a primary pipe network and a secondary pipe network;
step 2, the control module compares the user operation instruction, the water temperature, the water pressure, the boiler water outlet temperature and the temperature control valve opening degree information of the primary pipe network and the secondary pipe network with corresponding set values, and sends a temperature adjustment instruction to the central processor according to a comparison result;
and step 3, controlling the temperature of the heat supply source by the command sending module according to the temperature regulating command.
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, the set circulating pump frequency of the primary pipe network is obtained, and the return water pressure of the primary pipe network is obtained;
and 22, sending out a temperature rising 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 includes:
if the set circulating pump frequency of the primary pipe network is smaller than the set circulating pump frequency upper limit value, and the backwater pressure of the primary pipe network is smaller than the set backwater pressure upper limit value, the set circulating pump frequency is increased, and a temperature increasing instruction is sent out according to the increased set circulating pump frequency.
In an alternative 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 the boiler water outlet temperature;
step 222, sending out a temperature rising instruction according to the opening information of the temperature control valve and the temperature of the boiler outlet water.
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 increasing instruction according to the temperature control valve after expanding the opening.
In an alternative embodiment, step 222 further comprises:
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, and the boiler water outlet temperature is smaller than the set upper limit value of the boiler water outlet, the boiler water outlet temperature is increased, and a temperature increasing instruction is sent out according to the increased boiler water outlet temperature.
In an alternative 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 step 24, sending out a temperature reducing 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 includes:
and if the set circulating pump frequency of the primary pipe network is larger than the set circulating pump frequency upper limit value, and the backwater pressure of the primary pipe network is larger than the set backwater pressure upper limit value, reducing the set circulating pump frequency, and sending out temperature reducing information according to the reduced set circulating pump frequency.
In an alternative embodiment, step 24 further comprises:
step 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 outlet water temperature of the boiler;
and step 242, sending out a temperature rising instruction according to the opening information of the temperature control valve and the boiler water outlet 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 out temperature reducing information according to the temperature control valve with the reduced opening.
In an alternative embodiment, step 242 further comprises:
if the opening of the temperature control valve is smaller than the upper limit value of the opening of the temperature control valve and the temperature of the boiler outlet water is larger than the lower limit value of the temperature of the boiler outlet water, the temperature of the boiler outlet water is reduced, and the temperature reduction information is sent out according to the reduced temperature of the boiler outlet water.
In another aspect, there is provided a central heating control apparatus, the apparatus comprising:
the data acquisition module is used for acquiring the water temperature, the water pressure and the opening information of the temperature control valve of the primary pipe network and the secondary pipe network;
the control module is used for comparing the user operation instruction, the water temperature, the water pressure, the opening information of the temperature control valve and the corresponding set values of the primary pipe network and the secondary pipe network, and sending a temperature regulation 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 regulating instruction.
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 backwater 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 out a temperature rising 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, 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 smaller than the set circulation pump frequency upper limit value, and the return water pressure of the primary pipe network is smaller than the set return water pressure upper limit value, and send a temperature increase instruction according to the increased set circulation pump frequency.
In an optional implementation manner, the second control unit is used for acquiring opening information of the temperature control valve and acquiring the boiler outlet water temperature 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;
and sending out a temperature rising instruction according to the opening information of the temperature control valve and the temperature of the boiler outlet water.
In an alternative embodiment, the second control unit is configured to expand the opening of the thermo valve if the opening of the thermo valve is smaller than the set upper limit value of the opening of the thermo valve, and send a temperature increase command according to the thermo valve after expanding the opening.
In an alternative embodiment, the second control unit is configured to raise the boiler outlet water temperature 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 temperature of the boiler outlet water, and send a temperature raising command according to the raised boiler outlet water temperature.
In an alternative 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 backwater 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 out a temperature reducing 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, the fourth control unit 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 circulation pump frequency upper limit value, and the return water pressure of the primary pipe network is greater than the set return water pressure upper limit value, and send the information of reducing the temperature according to the reduced set circulation pump frequency.
In an optional implementation manner, the fourth control unit is configured to obtain opening information of the temperature control valve and obtain a boiler outlet water temperature 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;
and sending out a temperature rising instruction according to the opening information of the temperature control valve and the temperature of the boiler outlet water.
In an alternative embodiment, the fourth control unit is configured to decrease the opening of the thermo valve if the opening of the thermo valve is greater than the set upper limit value of the opening of the thermo valve, and send out the information of decreasing the temperature according to the thermo valve of which the opening is decreased.
In an alternative embodiment, the fourth control unit is configured to reduce the boiler outlet water temperature if the opening of the thermo valve is smaller than the set upper limit value of the opening of the thermo valve and the boiler outlet water temperature is greater than the set lower limit value of the boiler outlet water temperature, and send out temperature reducing information according to the reduced boiler outlet water temperature.
The method provided by the embodiment of the invention has at least 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, water supply pressure and temperature control valve opening information of the primary pipe network and the secondary pipe network, 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 degree of the temperature control valve, the reduction or the rising of the temperature of the boiler water outlet and the like through the temperature adjusting command, so that the aim of controlling heat supply is fulfilled. The method provided by the embodiment of the invention can realize remote control of the heating temperature, does not need an operator to collect data on site or adjust the opening degree of the temperature control valve on site, can monitor and control the temperature in real time, and improves 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 schematic 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:
and step 1, a data acquisition module acquires water temperature, water pressure and temperature control valve opening information of a primary pipe network and a secondary pipe network.
And 102, the control module compares the user operation instruction, the water temperature, the water pressure, the boiler water outlet temperature and the temperature control valve opening degree information of the primary pipe network and the secondary pipe network with corresponding set values, and sends a temperature adjustment instruction to the central processor according to a comparison result.
And step 103, controlling the temperature of the heat supply source by the command sending module according to the temperature regulation command.
The method provided by the embodiment of the invention has at least 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, water supply pressure and temperature control valve opening information of the primary pipe network and the secondary pipe network, 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 display information which can be displayed by the man-machine interface through the central processor, so that a user can conveniently know the temperature and pressure conditions of the primary pipe network and the secondary pipe network in real time through the man-machine interface; the man-machine interface can input an operation instruction according to the displayed information, and the control module sends temperature adjustment 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 degree of the temperature control valve, the reduction or the rising of the temperature of the boiler water outlet and the like through the temperature adjusting command, so that the aim of controlling heat supply is fulfilled. The method provided by the embodiment of the invention can realize remote control of the heating temperature, does not need an operator to collect data on site or adjust the opening degree of the temperature control valve on site, can monitor and control the temperature in real time, and improves the efficiency of temperature control.
The methods and apparatus provided by embodiments of the present invention will be further described in the following by alternative embodiments.
In step 101, the primary pipe network refers to a pipeline from a heat source plant for central heating to a valve at a home (interface) of each heat unit. The secondary pipe network refers to a pipeline between each single building in each heat utilization unit, for example, 10 buildings are arranged in a certain district, and hot water is conveyed from the joint of the district and the primary pipe network to each building.
As an example, the data acquisition module provided by the embodiment of the present invention may be a data acquisition device. The primary pipe network and the secondary pipe network are respectively provided with a temperature sensor, a pressure sensor, a temperature control valve, a flowmeter and the like. And the data acquisition device is connected with a primary pipe network, a temperature sensor, a pressure sensor, a temperature control valve, a flowmeter and the like on a secondary pipe network, and temperature, pressure, 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 also affects the control of the central heating, as an example, if the outdoor temperature is low, the indoor temperature is affected, so that the indoor temperature is at a low level, and at this time, the control of the central heating is required to be high; if the outdoor temperature is higher, the indoor temperature can be influenced, so that the indoor temperature is at a higher level, and the temperature for central heating needs to be controlled to be lower at the moment, so that the heating cost is reduced while the heating is achieved, and resources are saved.
The water temperature provided by the embodiment of the invention comprises the water outlet temperature of the primary pipe network, the water outlet temperature of the boiler connected with the primary pipe network, the water return temperature, the water outlet temperature of the secondary pipe network and the water return pressure. The water pressure of the primary pipe network refers to the backwater pressure of the primary pipe network. The temperature control valve is a temperature control valve, is a typical application of a flow control valve in the field of temperature control, and has the following basic principle: 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 regulated by changing the opening degree of the valve, so that the influence caused by load fluctuation is eliminated, and the temperature is restored to the set value. Therefore, the opening degree of the temperature control valve provided by the embodiment of the invention refers to 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 man-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 for cell phones, computers, etc. And receiving information through a man-machine interface of the terminal, and displaying the display information through the man-machine interface. As an example, the data received by the human interface may include temperature data, pressure data, temperature control valve opening data, etc. of the one-net pipeline. I.e. the operator can clearly see the real-time data of the first network pipeline and the second network pipeline through the man-machine interface. And inputting an operation instruction according to the display data.
As an example, if the temperature of the first and second net pipes is high, an instruction to raise the temperature may be input through the human interface. If the temperature of the first network management and the second network pipeline is lower, a temperature reducing instruction can be input through a human-computer interface. The embodiment of the invention is not limited to this.
After an operation command is input through a man-machine interface, the control module determines to send out temperature regulation information according to the received operation command, the temperature and pressure of the first network pipeline and the second network pipeline and the temperature control valve opening information acquired by the data acquisition device.
It may be understood that the data acquisition module provided in the embodiment of the present invention is connected to a central processor, the central processor is connected to a man-machine interface, the man-machine interface is connected to a control module, the control module is connected to the central processor, and the central processor is further connected to a command sending module.
The set temperature upper limit value and the set temperature lower limit value provided by the embodiment of the invention comprise the temperature upper limit value set by the water outlet of the primary pipe network, the temperature upper limit value set by the water return of the primary pipe network, the temperature upper limit value set by the water supply of the secondary pipe network and the temperature upper limit value set by the water return of the secondary pipe network. The upper limit value of the temperature set by the water outlet of the primary pipe network, the upper limit value of the temperature set by the water return 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 and the lower limit value of the temperature set by the water return of the secondary pipe network are fixed in a central heating system, that is, if a central heating system is determined, the upper limit value and the lower limit value of the temperature set by the water outlet required by the system are determined, and the upper limit value and the lower limit value of the temperature set by the water outlet of a device in different central heating systems are different and can be determined according to practical application conditions, so that the invention is not limited.
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 model of the circulating pump, and the embodiment of the invention is not limited to the above.
The upper limit value and the lower limit value of the set backwater pressure provided by the embodiment of the invention are fixed in a central heating system, that is, if the upper limit value and the lower limit value of the backwater pressure required by the system are determined after the central heating system is determined, the upper limit value and the lower limit value of the backwater pressure set by a different central heating system are different, and the upper limit value and the lower limit value of the backwater pressure can be determined according to practical application conditions, so that the invention is not limited.
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 described.
And 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.
It should be noted that if the outlet water temperature of the secondary pipe network is smaller than the set upper temperature limit value, the temperature needs to be raised, but if the temperature is raised only according to the outlet water temperature of the secondary pipe network, the temperature lowering measures adopted are not just the same or the temperature raising effect is not good. For example, if it is necessary to increase the opening degree of the thermo valve, the opening degree of the thermo valve is not increased but the frequency of the circulation pump is increased. Thus, if the circulation frequency of the circulation pump has exceeded the set upper limit value of the circulation pump frequency, the frequency of the circulation pump is not reduced, which may cause overload or malfunction of the circulation pump.
The set upper limit value of the temperature here refers to the temperature required by the secondary pipe network when supplying heat to the user. If the temperature of the secondary pipe network is smaller than the set upper limit value, the temperature of the secondary pipe network is lower, and enough heat cannot be provided for direct users. Thus, the frequency of the circulation pump connected to the primary pipe network can be obtained. The circulating pump returns the backwater in the primary pipe network to the boiler for recycling, so that the frequency of the circulating pump has great influence on the heat transported by 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 heat supply quantity of a user can be controlled.
And step 21, sending out a temperature rising instruction according to the frequency of the circulating pump of the primary pipe network and the backwater pressure of the primary pipe network.
In an alternative embodiment, step 22 includes: if the set circulating pump frequency of the primary pipe network is smaller than the set circulating pump frequency upper limit value, and the backwater pressure of the primary pipe network is smaller than the set backwater pressure upper limit value, the set circulating pump frequency is increased, and a temperature increasing instruction is sent out 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, 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 is required to be increased, the frequency of the circulating pump is increased, and then the purpose of increasing the temperature is achieved.
In an alternative embodiment, step 22 further comprises: if the set circulating pump frequency of the primary pipe network is larger than or equal to the set circulating pump frequency upper limit value, opening information of the temperature control valve is obtained, the opening of the temperature control valve is compared with the set value of the opening of the temperature control valve, if the opening of the temperature control valve is smaller than the set temperature control valve opening upper limit value, the opening of the temperature control valve needs to be enlarged, and the temperature is raised by enlarging the opening of the temperature control valve.
The opening setting value of the thermostatic valve is different according to different thermostatic valves, namely, the opening of different types of thermostatic valves is different, and the opening setting value of the thermostatic valve is the maximum opening value and the minimum opening value of the thermostatic valve. The embodiment of the invention does not limit the set value of the temperature control valve.
In an alternative 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 circulating pump frequency upper limit value, acquiring opening information of the temperature control valve and acquiring the boiler water outlet temperature.
And sending out a temperature rising instruction according to the opening information of the temperature control valve and the temperature of the boiler water outlet.
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, the opening information of the temperature control valve and the boiler water outlet temperature are obtained, and if the opening of the temperature control valve is greater than or equal to the set temperature control valve opening upper limit value, the opening of the temperature control valve is larger, and a warning of overload of the temperature control valve is required to be sent.
In an alternative embodiment, the method for sending out the temperature increasing instruction according to the opening degree information of the temperature control 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 increasing instruction according to the temperature control valve after expanding the opening.
In an alternative embodiment, the method sends out a temperature increasing instruction according to the opening information of the temperature control valve and the temperature of the boiler outlet water, and further comprises:
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, 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 increasing instruction is sent out according to the increased boiler outlet water temperature.
If the opening of the thermostatic valve is greater than or equal to the set upper limit value of the opening of the thermostatic valve, the temperature of the outlet water of the boiler needs to be compared with the set upper limit value of the temperature, and if the temperature of the outlet water of the boiler is less than the set upper limit value of the temperature, the temperature of the outlet water of the boiler can be raised.
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 temperature of the boiler outlet water is found to be larger than or equal to the set upper limit value of the temperature after the temperature of the boiler outlet water is compared with the set upper limit value of the temperature, and then 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 the user operation instruction and the water temperature, water pressure and temperature control valve opening information of the primary pipe network and the secondary pipe network, and the control module further comprises:
if the outlet water temperature of the secondary pipe network is greater than or equal to the set upper temperature limit value, the set circulating pump frequency of the primary pipe network is obtained, and the return water pressure of the primary pipe network is obtained;
and sending out a temperature reducing instruction according to the frequency of the circulating pump of the primary pipe network and the backwater 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 limit value, the cooling is required, but if the cooling is performed only according to the outlet water temperature of the secondary pipe network, the adopted cooling measures are not just as good or the cooling effect is not good. For example, if it is necessary to reduce the opening degree of the thermo valve, the opening degree of the thermo valve is not reduced but the frequency of the circulation pump is reduced. In this way, if the opening degree of the thermo valve has exceeded the upper limit value, it is not reduced yet, and overload or malfunction of the thermo valve may be caused. Or when the boiler outlet water temperature needs to be reduced, the boiler outlet water temperature 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 not only achieves the aim of controlling the central heating temperature through multi-level and multi-azimuth modes such as the backwater temperature of the secondary pipe network, the opening degree of the temperature control valve, the boiler water outlet 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 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, if the set circulating pump frequency of the primary pipe network is greater than the set lower limit value of the circulating pump frequency, the set circulating pump frequency of the primary pipe network is compared with the set lower limit value of the circulating pump frequency according to the obtained set circulating pump frequency, if the set circulating pump frequency of the primary pipe network is greater than the set lower limit value of the circulating pump frequency, the backwater pressure of the primary pipe network is obtained again, if the backwater pressure of the primary pipe network is greater than the set upper limit value of the backwater pressure, the set circulating pump frequency is reduced, and the information of the reduced temperature is sent according to the reduced set circulating pump frequency.
In an alternative embodiment, the method for sending the instruction of temperature reduction 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 larger than the set circulating pump frequency upper limit value, and the backwater pressure of the primary pipe network is larger than the set backwater pressure upper limit value, reducing the set circulating pump frequency, and sending out temperature reducing information according to the reduced set circulating pump frequency.
If the outlet water temperature of the secondary pipe network is greater than or equal to the set upper limit value of the temperature, the set circulating pump frequency of the primary pipe network is greater than or equal to the set lower 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, that is, the two conditions are all satisfied, the temperature can be reduced by reducing the set circulating pump frequency, and the temperature reduction information is sent according to the reduced set circulating pump frequency.
In an alternative embodiment, the method for controlling the temperature of the primary pipe network further comprises the following steps:
if the set circulating pump frequency of the primary pipe network is not greater than the set circulating pump frequency upper limit value, acquiring opening information of a temperature control valve and acquiring the boiler water outlet temperature;
and sending out a temperature rising instruction according to the opening information of the temperature control valve and the temperature of the boiler water outlet.
If the opening of the temperature control valve is larger than the lower limit value of the opening of the temperature control valve, the boiler water outlet temperature is acquired, and the mode of cooling is judged through the boiler water outlet temperature and the opening of the temperature control valve. Further, if the temperature control valve opening is greater than the temperature control valve opening lower limit value and the boiler outlet water temperature is not greater than the temperature lower limit value, the furnace needs to be shut down.
In an alternative embodiment, the method for sending out the temperature increasing instruction according to the opening degree information of the temperature control 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 out temperature reducing 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 purpose of reducing the temperature can be achieved by reducing the opening of the temperature control valve.
In an alternative embodiment, the method sends out a temperature increasing instruction according to the opening information of the temperature control valve and the temperature of the boiler outlet water, and further comprises:
if the opening of the temperature control valve is smaller than the upper limit value of the opening of the temperature control valve and the temperature of the boiler outlet water is larger than the lower limit value of the temperature of the boiler outlet water, the temperature of the boiler outlet water is reduced, and the temperature reduction information is sent out according to the reduced temperature of the boiler outlet water.
It should be noted that, the method provided by the embodiment of the invention can store the water temperature, water pressure and temperature control valve opening information 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 temperature control valve opening information of the primary pipe network and the secondary pipe network, thereby improving the accuracy of central heating control.
In another aspect, there is also provided a central heating control apparatus, as shown in fig. 3, the apparatus including:
the data acquisition module 201 is used for acquiring water temperature, water pressure and temperature control valve opening information of the primary pipe network and the secondary pipe network;
the control module 202 is configured to send a temperature adjustment instruction to the central processor according to the user operation instruction and the water temperature, water pressure and temperature control valve opening information of the primary pipe network and the secondary pipe network;
and the command sending module 203 is used for controlling the temperature of the heating source according to the temperature regulation command.
In an alternative embodiment, the control module 202 is configured to compare the user operation instruction and the water temperature, water pressure, boiler outlet water temperature and temperature control valve opening information of the primary pipe network and the secondary pipe network with corresponding set values, and send a temperature adjustment instruction to the central processor according to the comparison result;
and sending out a temperature rising instruction according to the frequency of the circulating pump of the primary pipe network and the backwater 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 circulation pump frequency upper limit value, and the return water pressure of the primary pipe network is less than the set return water pressure upper limit value, and issue a temperature increase command according to the increased set circulation pump frequency.
In an alternative embodiment, the control module 202 is configured to obtain opening information of the temperature control valve and obtain a boiler outlet water temperature 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;
and sending out a temperature rising instruction according to the opening information of the temperature control valve and the temperature of the boiler water outlet.
In an alternative embodiment, the control module is configured to expand the opening of the thermo valve if the opening of the thermo valve is smaller than the set upper limit value of the opening of the thermo valve, and send a temperature increase command according to the thermo valve after expanding the opening.
In an alternative embodiment, the control module 202 is configured to increase the boiler outlet water temperature if the opening of the thermo valve is greater than or equal to the set upper limit value of the opening of the thermo valve and the boiler outlet water temperature is less than the set upper limit value of the temperature of the boiler outlet water, and issue a temperature increase command according to the increased boiler outlet water temperature.
In an alternative embodiment, the control module 202 is configured to obtain the set circulating pump frequency of the primary pipe network and obtain 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 sending out a temperature reducing instruction according to the frequency of the circulating pump of the primary pipe network and the backwater pressure of the primary pipe network.
In an alternative 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 circulation pump frequency upper limit value, and the return water pressure of the primary pipe network is greater than the set return water pressure upper limit value, and send the temperature reduction information according to the reduced set circulation pump frequency.
In an alternative embodiment, the control module is used for acquiring opening information of the temperature control valve and acquiring the boiler outlet water temperature 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;
and sending out a temperature rising instruction according to the opening information of the temperature control valve and the temperature of the boiler water outlet.
In an alternative embodiment, the control module 202 is configured to decrease the opening of the thermo valve if the opening of the thermo valve is greater than the set upper limit value of the opening of the thermo valve, and send out information of decreasing the temperature according to the thermo valve with decreased opening.
In an alternative embodiment, the control module 202 is configured to reduce the boiler outlet water temperature if the temperature control valve opening is smaller than the set upper limit value of the temperature control valve opening and the boiler outlet water temperature is greater than the set lower limit value of the boiler outlet water temperature, and send out temperature reduction information according to the reduced boiler outlet water temperature.
The device provided by the embodiment of the invention has at least 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 degree information of the temperature control valve of the primary pipe network and the secondary pipe network, the real-time temperature and the real-time pressure of the primary pipe network and the secondary pipe network can be obtained through the information, and the information is further processed into the display information which can be displayed by the man-machine interface through the central processor, so that a user can conveniently know the temperature and the pressure conditions of the primary pipe network and the secondary pipe network in real time through the man-machine interface; the man-machine interface can input an operation instruction according to the displayed information, and the control module sends temperature adjustment 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 degree of the temperature control valve, the reduction or the rising of the temperature of the boiler water outlet and the like through the temperature adjusting command, so that the aim of controlling heat supply is fulfilled. The method provided by the embodiment of the invention can realize remote control of the heating temperature, does not need an operator to collect data on site or adjust the opening degree of the temperature control valve on site, can monitor and control the temperature in real time, and improves the efficiency of temperature control.
The foregoing embodiments have only expressed one or more embodiments of the invention, which are described in greater detail and are not, therefore, to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the invention, which are within the scope of the invention.
Claims (6)
1. A central heating control method, characterized in that the method comprises:
step 1, a data acquisition module acquires water temperatures of a primary pipe network and a secondary pipe network, water pressures of the primary pipe network and the secondary pipe network, boiler water outlet temperature and temperature control valve opening information;
step 2, the control module compares the water temperatures of the primary pipe network and the secondary pipe network, the water pressures of the primary pipe network and the secondary pipe network, the boiler water outlet temperature and the opening degree information of the temperature control valve with corresponding set values, and sends a temperature regulation instruction to the central processor according to the comparison result;
step 3, the command sending module controls the temperature of the heat supply source according to the temperature regulating command;
the step 2 comprises the following steps: 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;
step 22, sending out a temperature rising instruction according to the set circulating pump frequency of the primary pipe network and the return water pressure of the primary pipe network;
step 22 comprises:
if the set circulating pump frequency of the primary pipe network is smaller than the set circulating pump frequency upper limit value, and the backwater pressure of the primary pipe network is smaller than the set backwater pressure upper limit value, increasing the set circulating pump frequency, and sending a temperature increasing instruction according to the increased set circulating pump frequency;
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 the boiler water outlet temperature;
222, sending a temperature increasing instruction according to the opening information of the temperature control valve and the temperature of the boiler outlet water;
step 222 includes:
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 increasing instruction according to the temperature control valve after expanding the opening; 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, 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 increasing instruction is sent out according to the increased boiler outlet water temperature.
2. 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 step 24, sending out a temperature reducing instruction according to the frequency of the circulating pump 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, wherein step 24 comprises: and if the set circulating pump frequency of the primary pipe network is larger than the set circulating pump frequency upper limit value, and the backwater pressure of the primary pipe network is larger than the set backwater pressure upper limit value, reducing the set circulating pump frequency, and sending out temperature reducing information according to the reduced set circulating pump frequency.
4. A central heating control method according to claim 3, wherein step 24 further comprises:
step 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 outlet water temperature of the boiler;
and step 242, sending a temperature reducing instruction according to the opening information of the temperature control valve and the boiler water outlet temperature.
5. A central heating control apparatus employing the central heating control method according to claim 1, characterized in that the apparatus comprises:
the data acquisition module acquires water temperatures of the primary pipe network and the secondary pipe network, water pressures of the primary pipe network and the secondary pipe network, boiler water outlet temperature and temperature control valve opening information;
the control module compares the water temperatures of the primary pipe network and the secondary pipe network, the water pressures of the primary pipe network and the secondary pipe network, the boiler water outlet temperature and the opening degree information of the temperature control valve with corresponding set values, and sends a temperature regulation instruction to the central processor according to the comparison result;
and the command sending module controls the temperature of the heat supply source according to the temperature regulation instruction.
6. A central heating control device as claimed in claim 5, 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 backwater 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 out a temperature rising instruction according to the set circulating pump frequency of the primary pipe network and the return water pressure of the primary pipe network.
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| CN112361596B (en) * | 2020-10-22 | 2021-10-22 | 珠海格力电器股份有限公司 | Heat pump system at low ring temperature, control method thereof and controller |
| CN112984617B (en) * | 2021-03-17 | 2024-06-28 | 瑞纳智能设备股份有限公司 | Constant heating two-network temperature supply one-network temperature control valve opening degree adjusting method based on artificial intelligence |
| CN113405142B (en) * | 2021-07-09 | 2022-09-23 | 山东兰格尔节能科技有限公司 | Heat supply two-network balancing method |
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