CN213453826U - Air source heat pump cluster control system - Google Patents
Air source heat pump cluster control system Download PDFInfo
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- CN213453826U CN213453826U CN202022342752.XU CN202022342752U CN213453826U CN 213453826 U CN213453826 U CN 213453826U CN 202022342752 U CN202022342752 U CN 202022342752U CN 213453826 U CN213453826 U CN 213453826U
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Abstract
The application provides an air source heat pump cluster control system, circulating water enters each air source heat pump group from a water collector and a main water inlet pipeline, and flows into a water separator from a main water outlet pipeline after circulation, and the water separator is communicated with the water collector; each air source heat pump group comprises a plurality of heat pumps, each air source heat pump group comprises a group water inlet pipeline and a group water outlet pipeline, and an electric regulating valve and a flowmeter are respectively arranged on each group water inlet pipeline; the electric heating device comprises an electric heating boiler, an energy storage water tank and a heat exchanger, the second water pump group heats water in the energy storage water tank through the electric heating boiler and then transmits the water to one side of the heat exchanger, a heat exchange pipeline is connected between the main water outlet pipeline and the other side of the heat exchanger, and the output end of the heat exchange pipeline is connected to the water separator. The beneficial effect of this application is: the electric regulating valve is mounted on each air source heat pump unit, so that opening and closing can be flexibly controlled according to actual temperature requirements, and the electric heating device can store energy to heat and heat circulating water in the main water outlet pipeline in the valley electricity price, so that the running cost is saved.
Description
Technical Field
The disclosure relates to the technical field of air source heat pump cluster heating, in particular to an air source heat pump cluster control system.
Background
The air source heat pump is an integrated central air conditioning system using air as a cold (heat) medium and also as a cold (heat) source. The air source unit is greatly influenced by the ambient temperature when heating in winter, and the heating capacity is reduced by about 35% in extreme weather, for example: the heating capacity of 150 units is 160KW when the outdoor temperature is 7 ℃, and is 110KW when the outdoor temperature is-12 ℃, so that the efficiency of the air source unit decreases proportionally along with the decrease of the air temperature; and the winter heating load is changed along with the climate change, the load is lower by about 40% because the air temperature is not reduced to the lowest when the heating is started, and the load is 100% at the maximum when the air temperature is the coldest, so the load is required to be adjusted and changed along with the change of the heating load when the number of the heat pumps operated by the air source unit is changed.
At present, the single heat pump has too small heat supply capacity, so that a plurality of heat pumps are required to form an air source heat pump unit to carry out multi-unit combined operation, but the problem of high energy consumption at stages can occur in practical application.
Disclosure of Invention
The present application aims to solve the above problems and provide an air source heat pump cluster control system.
In a first aspect, the present application provides an air source heat pump cluster control system, including a plurality of air source heat pump sets, a total water inlet pipe, a total water outlet pipe, a first water pump set, a water collector, a water separator and an electric heating device; circulating water in the water collector is input into the main water inlet pipeline through the first water pump group; circulating water circulates through each air source heat pump group and then flows into a water separator through a main water outlet pipeline, and the water separator is communicated with a water collector; each air source heat pump group comprises a plurality of heat pumps, each air source heat pump group comprises a group water inlet pipeline and a group water outlet pipeline, the water inlet ends of the heat pumps in the air source heat pump group are respectively connected to the group water inlet pipelines, and the water outlet ends of the heat pumps are respectively connected to the group water outlet pipelines; each group of water inlet pipelines is connected to the main water inlet pipeline, and each group of water outlet pipelines is connected to the main water outlet pipeline; the group of water inlet pipelines are respectively provided with an electric regulating valve and a flowmeter; the electric heating device comprises an electric heating boiler, an energy storage water tank, a heat exchanger and a second water pump set, the second water pump set transmits water in the energy storage water tank to one side of the heat exchanger after being heated by the electric heating boiler, a heat exchange pipeline is connected between the main water outlet pipeline and the other side of the heat exchanger, and the output end of the heat exchange pipeline is connected to the water separator.
According to the technical scheme that this application embodiment provided, still include PLC control module, control module is connected with the host computer and the electrical control valve electricity of first water pump group, each heat pump respectively.
According to the technical scheme provided by the embodiment of the application, the first water pump group comprises a plurality of electric water pumps with different powers.
According to the technical scheme that this application embodiment provided, each the input and the output of heat pump are equipped with manometer, thermometer and temperature sensor respectively, temperature sensor with control module signal connection.
According to the technical scheme that this application embodiment provided, still include level pressure moisturizing device, level pressure moisturizing device is used for replenishing the circulating water in to the water collector, level pressure moisturizing device's output is linked together with the water collector.
The invention has the beneficial effects that: the application provides an air source heat pump cluster control system, an electric regulating valve is installed on each air source heat pump group, so that the opening and closing of a main machine of each air source heat pump group can be controlled remotely and flexibly according to actual temperature requirements, the operation cost is saved, and remote control is facilitated; the setting of electric heater can supplement the heating capacity of heat pump under extremely bad weather, electric boiler circulates to the heat exchanger after with water heating, carry out the heat transfer heating to the circulating water in the total outlet conduit that circulates to the heat exchanger, and then guarantee the heating capacity of air source heat pump group, guarantee the stability of whole air source heat pump cluster heating capacity, and the actual conditions of usable peak valley price, can heat the energy storage through electric boiler with the water in the energy storage water tank when the valley price, circulating water after the energy storage heating can be released in the heat exchanger and carry out the heat transfer heating with the circulating water to total outlet conduit outflow daytime, thereby save running cost.
Drawings
FIG. 1 is a schematic structural diagram of a first embodiment of the present application;
FIG. 2 is an enlarged schematic view of portion A of FIG. 1;
the text labels in the figures are represented as: 100. an air source heat pump group; 110. a water inlet pipeline is formed; 120. assembling a water outlet pipeline; 130. an electric control valve; 140. a flow meter; 210. a main water inlet pipe; 220. a main water outlet pipeline; 300. a first water pump group; 400. a water collector; 500. a water separator; 600. a heat pump; 610. a water inlet end; 620. a water outlet end; 630. a pressure gauge; 640. a thermometer; 650. a temperature sensor; 710. an electric boiler; 720. an energy storage water tank; 730. a heat exchanger; 731. a heat exchange line; 732. a first switching valve; 733. a second switching valve; 740. a second water pump group; 900. constant pressure water replenishing device.
Detailed Description
In order that those skilled in the art will better understand the technical solutions of the present invention, the following detailed description of the present invention is provided in conjunction with the accompanying drawings, and the description of the present section is only exemplary and explanatory, and should not be construed as limiting the scope of the present invention in any way.
Fig. 1 and fig. 2 are schematic diagrams illustrating a first embodiment of the present application, which includes a plurality of air source heat pump sets 100, a main water inlet pipe 210, a main water outlet pipe 220, a first water pump set 300, a water collector 400, a water separator 500, and an electric heating device.
Circulating water in the water collector 400 is input into the main water inlet pipeline 210 through the first water pump group 300, and each air source heat pump group 100 is connected in parallel between the main water inlet pipeline 210 and the water outlet pipeline and further input into each air source heat pump group 100; circulating water circulates through each air source heat pump unit 100 and then flows into the water separator 500 through the main water outlet pipeline 220, and the water separator 500 is communicated with the water collector 400.
Each air source heat pump group 100 comprises a plurality of heat pumps 600, each air source heat pump group 100 comprises a group water inlet pipeline 110 and a group water outlet pipeline 120, the water inlet end 610 of each heat pump 600 in the air source heat pump group 100 is connected to the group water inlet pipeline 110, and the water outlet end 620 of each heat pump 600 is connected to the group water outlet pipeline 120; each of the set of inlet conduits 110 is connected to the main inlet conduit 210 and each of the set of outlet conduits 120 is connected to the main outlet conduit 220. In this embodiment, the group water inlet pipes 110 of each group of air source heat pump groups 100 are respectively communicated with the main water inlet pipe 210, that is, the circulating water respectively flows into the group water inlet pipes 110 of each group from the main water inlet pipe 210, each group of air source heat pump groups 100 includes a plurality of heat pumps 600, the heat pumps 600 in each group of air source heat pump groups 100 are connected in parallel, the circulating water in the group water inlet pipe 110 respectively flows into the water inlet ends 610 of the heat pumps 600, the circulating water enters the heat pumps 600 through the water inlet ends 610, when the main machine of the heat pumps 600 is turned on, the circulating water circulates in the heat pumps 600 and then flows out through the water outlet ends 620, the circulating water of each heat pump 600 flows into the group water outlet pipe 120 of the group after circulating, and the group water outlet pipes 120.
In a preferred embodiment, eight air-source heat pump groups 100 are provided, with four heat pumps 600 per air-source heat pump group 100.
In this embodiment, each air source heat pump unit 100 is provided with an electric control valve 130 and a flow meter 140 corresponding to the water inlet pipe 110. In this embodiment, the electrical control valve 130 and the flow meter 140 are disposed at the beginning of each group of the water inlet pipe 110, i.e. the electrical control valve 130 and the flow meter 140 are disposed before the circulating water flows into the water inlet 610 of each heat pump. In this embodiment, the electric control valve 130 is disposed on each air source heat pump unit 100, so that each electric control valve 130 can be remotely controlled to be opened or closed conveniently, and therefore, the working state of each air source heat pump unit 100 can be flexibly controlled according to the outside air temperature and the weather condition, and the operation cost is saved. In this embodiment, the flowmeter 140 is provided on each air source heat pump group 100 because each heat pump host needs a rated water flow rate for normal operation, and cannot be changed at will, and a fault shutdown is caused by an excessively changed host, so that the circulating water flow rate in each air source heat pump group 100 needs to be monitored.
In this embodiment, in consideration of economic cost, the electric control valve 130 is disposed in each air source heat pump group 100, and in other embodiments, the electric control valve 130 may be disposed on each heat pump, so as to achieve more precise heat supply control.
The electric heating device comprises an electric heating boiler 710, an energy storage water tank 720, a heat exchanger 730 and a second water pump group 740, the second water pump group 740 heats water in the energy storage water tank 720 through the electric heating boiler 710 and then transmits the heated water to one side of the heat exchanger 730, a heat exchange pipeline 731 is connected between the main water outlet pipeline and the other side of the heat exchanger 730, and the output end of the heat exchange pipeline 731 is connected to the water separator 500.
In this embodiment, the electric heating device is arranged to supplement the heat supply capacity of the heat pump in extreme bad weather, the electric boiler 710 heats water and then circulates the water to the heat exchanger 730, the circulating water in the main water outlet pipe 220 circulating to the heat exchanger 730 is subjected to heat exchange and heating, the heat supply capacity of the air source heat pump group 100 is further ensured, the stability of the heat supply capacity of the whole air source heat pump cluster is ensured, and the actual condition of peak-valley electricity price can be utilized, the water in the energy storage water tank 720 can be heated and stored through the electric boiler 710 during the valley electricity price, the circulating water after energy storage and heating can be released in the heat exchanger 730 and subjected to heat exchange and heating with the circulating water flowing out of the main water outlet pipe 220 in the daytime, and therefore the operation cost is saved.
In this embodiment, the heat exchange pipeline 731 and the main water outlet pipeline 220 are correspondingly provided with a first switching valve 732 and a second switching valve 733, when the first switching valve 732 is opened and the second switching valve 733 is closed, the circulating water in the main water outlet pipeline 220 enters the heat exchange pipeline 731 through the first switching valve 732, and flows into the water separator 500 after circulating heat exchange on the heat exchanger 730; when the first switching valve 732 is closed and the second switching valve 733 is opened, the circulating water in the main outlet conduit 220 directly flows into the water separator 500 without entering the heat exchange pipeline 731 for heat exchange.
In this embodiment, by independently and flexibly controlling each air source heat pump group 100 and matching with the advantage of storing energy for the heat supply system at the low valley power rate of the electric heating device, taking 0.265 yuan/KW at the power rate of 22 to 8 and 0.505 yuan/KW at the power rate of 8 to 22 as an example, the control system of this embodiment can control the heat supply operation cost to 10 yuan/square meter, while the control system in the prior art has an operation cost of about 17 yuan/square meter.
Preferably, the first water pump group 300 includes a plurality of electric water pumps having different powers.
In this embodiment, the system further includes a PLC control module, and the PLC control module is electrically connected to the first water pump set 300, the main unit of each heat pump, and the electric control valve 130. In this embodiment, the control module is a control center of the entire control system, and can remotely control the operation of each air source heat pump group 100, modify the parameters of each electric water pump in the first water pump group 300, and select the number and power of the started electric water pumps according to the load change and the change of the water volume of the heat pump. In this embodiment, the control module based on the PLC centralized control of each air source heat pump group 100 can start a corresponding number of air source heat pump groups 100 according to the heat required by the end load, thereby avoiding energy waste caused by excessive heat pump start. In the embodiment, the control module controls each heat pump in the turned-on air source heat pump unit 100 to be in a state of approaching to full load, so that the operation efficiency of the unit is improved.
In this embodiment, the control module has data recording and statistical functions, and can automatically correct the operation strategy of the heat pump. In the embodiment, through the automatic control of the control module, the unattended operation of the system can be realized, the automation degree is higher, and the labor cost is saved. The system also has the functions of remote control, automatic alarm and the like.
In a preferred embodiment, a pressure gauge 630, a temperature gauge 640 and a temperature sensor 650 are respectively disposed at an input end and an output end of each heat pump, and the temperature sensor 650 is in signal connection with the control module. In the preferred embodiment, the temperature gauge 640 is convenient for on-site monitoring of the temperature of the circulating water flowing into and out of each heat pump, the temperature sensor 650 is convenient for remote monitoring of the temperature of the circulating water flowing into and out of each heat pump, and the pressure gauge 630 is used for on-site monitoring of the pressure of the water inlet end 610 and the water outlet end 620 of each heat pump.
In a preferred embodiment, the water collector further comprises a constant pressure water replenishing device 900, the constant pressure water replenishing device 900 is used for replenishing circulating water into the water collector 400, and an output end of the constant pressure water replenishing device 900 is communicated with the water collector 400.
The principles and embodiments of the present application are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present application. The foregoing is only a preferred embodiment of the present application, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes may be made without departing from the principle of the present application, and the technical features described above may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments, or may be learned by practice of the invention.
Claims (5)
1. An air source heat pump cluster control system is characterized by comprising a plurality of groups of air source heat pump groups, a main water inlet pipeline, a main water outlet pipeline, a first water pump group, a water collector, a water separator and an electric heating device;
circulating water in the water collector is input into the main water inlet pipeline through the first water pump group; circulating water circulates through each air source heat pump group and then flows into a water separator through a main water outlet pipeline, and the water separator is communicated with a water collector;
each air source heat pump group comprises a plurality of heat pumps, each air source heat pump group comprises a group water inlet pipeline and a group water outlet pipeline, the water inlet ends of the heat pumps in the air source heat pump group are respectively connected to the group water inlet pipelines, and the water outlet ends of the heat pumps are respectively connected to the group water outlet pipelines; each group of water inlet pipelines is connected to the main water inlet pipeline, and each group of water outlet pipelines is connected to the main water outlet pipeline;
the group of water inlet pipelines are respectively provided with an electric regulating valve and a flowmeter;
the electric heating device comprises an electric heating boiler, an energy storage water tank, a heat exchanger and a second water pump set, the second water pump set transmits water in the energy storage water tank to one side of the heat exchanger after being heated by the electric heating boiler, a heat exchange pipeline is connected between the main water outlet pipeline and the other side of the heat exchanger, and the output end of the heat exchange pipeline is connected to the water separator.
2. The cluster control system of air source heat pumps as claimed in claim 1, further comprising a PLC control module electrically connected to the first water pump set, the main machine of each heat pump and the electric control valve, respectively.
3. The air-source heat pump cluster control system of claim 2, wherein the first water pump group comprises a plurality of electric water pumps of varying power.
4. The air source heat pump cluster control system as claimed in claim 3, wherein a pressure gauge, a temperature gauge and a temperature sensor are respectively arranged at the input end and the output end of each heat pump, and the temperature sensor is in signal connection with the control module.
5. The air source heat pump cluster control system as claimed in claim 1, further comprising a constant pressure water replenishing device for replenishing circulating water into the water collector, wherein an output end of the constant pressure water replenishing device is communicated with the water collector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022342752.XU CN213453826U (en) | 2020-10-20 | 2020-10-20 | Air source heat pump cluster control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022342752.XU CN213453826U (en) | 2020-10-20 | 2020-10-20 | Air source heat pump cluster control system |
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| CN213453826U true CN213453826U (en) | 2021-06-15 |
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| CN202022342752.XU Active CN213453826U (en) | 2020-10-20 | 2020-10-20 | Air source heat pump cluster control system |
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