Park heat supply system

Abstract

The utility model discloses a park heat supply system which comprises a plate heat exchanger, the internal heat supply water outlet end of the plate heat exchanger is connected with the water inlet end of an indoor heat supply water segregator through a heat supply water inlet pipe, and the internal heat supply water return end of the plate heat exchanger is connected with the water outlet end of an indoor heat supply water collector through a heat supply water return pipe; the third valve group is arranged on the heat supply water return pipe; the water outlet end of the air source heat pump is connected with the water inlet end of the heat storage water tank through a first water inlet pipe, and the water inlet end of the air source heat pump is connected with the water outlet end of the heat storage water tank through a first water return pipe. The first valve group is arranged on the first water return pipe; the second water return pipe is connected between the first water return pipe and the heat supply water return pipe; the second valve group is arranged on the second water return pipe; and the second water inlet pipe is connected between the first water inlet pipe and the heat supply water return pipe. According to the scheme, valley electricity at night is used for heat storage, auxiliary heating in the daytime is carried out, electricity is saved, and the operation cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of heat supply, in particular to a park heat supply system. BACKGROUND

[0002] When carrying out park heat supply, the centralized heat supply of access municipal heat supply can be adopted, and the independent heat supply of park boiler heat supply can also be adopted; some parks can only adopt independent heat supply due to geographical location, and the current independent heat supply equipment mainly adopts electric boiler to supply heat, in order to ensure the stable operation of the electric boiler, the current independent heat supply system is used in the daytime, which is the peak period of electricity consumption, and the electricity price is high, and the current independent heat supply system cannot fully utilize the valley electricity at night, and the overall operation cost is high. UTILITARY MODEL

[0003] The utility model provides a park heat supply system, air source heat pump works at night, utilizes the valley electricity of night to work, cooperates heat storage water tank to realize night heat storage, utilizes the heat storage of night to assist heating in the daytime, is helpful to save electricity, reduces operation cost.

[0004] To solve the above technical problem, the technical scheme of the utility model is as follows:

[0005] The utility model provides a park heat supply system, it includes:

[0006] Plate heat exchanger, the outside heat supply water inlet end of plate heat exchanger is connected with the water outlet end of electric boiler, and the outside heat supply backwater end of plate heat exchanger is connected with the backwater end of electric boiler;The inside heat supply water outlet end of plate heat exchanger is connected with the water inlet end of indoor heating water distributor through heat supply water inlet pipe, and the inside heat supply backwater end of plate heat exchanger is connected with the water outlet end of indoor heating water collector through heat supply backwater pipe;

[0007] Third valve group and second delivery pump arranged on heat supply backwater pipe, and the second delivery pump is located between the third valve group and the inside heat supply backwater end of plate heat exchanger;

[0008] Heat storage water tank;

[0009] Air source heat pump, the water outlet end of air source heat pump is connected with the water inlet end of heat storage water tank through first water inlet pipe, and the water inlet end of air source heat pump is connected with the water outlet end of heat storage water tank through first backwater pipe;

[0010] First delivery pump arranged on first water inlet pipe;

[0011] First valve group arranged on first backwater pipe;

[0012] a second return water pipe, a first end of the second return water pipe is connected with the first return water pipe, a connection between the second return water pipe and the first return water pipe is located between the first valve group and a water outlet end of the heat storage water tank; a second end of the second return water pipe is connected with the heat supply return water pipe, a connection between the second return water pipe and the heat supply return water pipe is located between the third valve group and the second delivery pump;

[0013] a second valve group arranged on the second return water pipe;

[0014] a second inlet water pipe, a first end of the second inlet water pipe is connected with the first inlet water pipe, a connection between the second inlet water pipe and the first inlet water pipe is located between the first delivery pump and a water inlet end of the heat storage water tank; a second end of the second inlet water pipe is connected with the heat supply return water pipe, a connection between the second inlet water pipe and the heat supply return water pipe is located between the third valve group and a water outlet end of the indoor heat supply water collector.

[0015] Optionally, the park heat supply system further comprises:

[0016] a photovoltaic power generation system, the air source heat pump is electrically connected with the photovoltaic power generation system, and the photovoltaic power generation system is connected in parallel with commercial power for power supply;

[0017] a controller, the photovoltaic power generation system and the air source heat pump are electrically connected with the controller.

[0018] Optionally, the first valve group comprises:

[0019] a first electromagnetic valve, the first electromagnetic valve is electrically connected with the controller, and a connection between the second return water pipe and the first return water pipe is located between the first electromagnetic valve and the water outlet end of the heat storage water tank.

[0020] Optionally, the first valve group further comprises:

[0021] a first maintenance valve, the first maintenance valve is arranged on the first return water pipe, and the first maintenance valve is close to a water inlet end of the air source heat pump;

[0022] a second maintenance valve, the second maintenance valve is arranged on the first return water pipe, and the second maintenance valve is close to the water outlet end of the heat storage water tank;

[0023] a third maintenance valve, the third maintenance valve is arranged on the first inlet water pipe, and the third maintenance valve is close to the water inlet end of the heat storage water tank;

[0024] a fourth maintenance valve, the fourth maintenance valve is arranged on the first inlet water pipe, and the fourth maintenance valve is close to the water outlet end of the air source heat pump.

[0025] Optionally, the second valve group comprises:

[0026] A second electromagnetic valve, the second electromagnetic valve is electrically connected with the controller, the second electromagnetic valve is close to the connection between the second return water pipe and the first return water pipe;

[0027] A third manual valve, the third manual valve is close to the connection between the second return water pipe and the heat supply return water pipe.

[0028] Optionally, the third valve group comprises:

[0029] A third electromagnetic valve, the third electromagnetic valve is electrically connected with the controller, the third electromagnetic valve is located between the connection between the second water inlet pipe and the heat supply return water pipe and the connection between the second return water pipe and the heat supply return water pipe.

[0030] Optionally, the third valve group further comprises:

[0031] A fifth manual valve, the fifth manual valve is connected with the third electromagnetic valve, the fifth manual valve is located between the third electromagnetic valve and the connection between the second return water pipe and the heat supply return water pipe;

[0032] A sixth manual valve, the sixth manual valve is connected with the third electromagnetic valve, the sixth manual valve is located between the third electromagnetic valve and the connection between the second water inlet pipe and the heat supply return water pipe;

[0033] A fourth manual valve, the fourth manual valve is connected in parallel with the sixth manual valve, the third electromagnetic valve and the fifth manual valve;

[0034] A seventh manual valve is arranged on the second water inlet pipe, the seventh manual valve is close to the connection between the second water inlet pipe and the heat supply return water pipe.

[0035] Optionally, the park heat supply system further comprises:

[0036] A first temperature sensor, the first temperature sensor is arranged on the first return water pipe, the first temperature sensor is close to the water inlet end of the air source heat pump, the first temperature sensor is electrically connected with the controller;

[0037] A second temperature sensor, the second temperature sensor is arranged on the first return water pipe, the second temperature sensor is close to the water outlet end of the heat storage water tank, the second temperature sensor is electrically connected with the controller;

[0038] A third temperature sensor, the third temperature sensor is arranged on the first water inlet pipe, the third temperature sensor is close to the water outlet end of the air source heat pump, the third temperature sensor is electrically connected with the controller;

[0039] A fourth temperature sensor is arranged on the first water inlet pipe, and the fourth temperature sensor is close to the water inlet end of the heat storage water tank, and the fourth temperature sensor is electrically connected with the controller.

[0040] Optionally, the second delivery pump is provided with two, and the two second delivery pumps are connected in parallel.

[0041] Optionally, the first delivery pump is provided with two, and the two first delivery pumps are connected in parallel.

[0042] The water inlet end of the two first delivery pumps is connected with a first manual valve, and the water outlet end of the two first delivery pumps is connected with a second manual valve.

[0043] The above scheme of the utility model has at least the following beneficial effects:

[0044] The air source heat pump works at night, utilizes valley electricity at night to work, cooperates with the heat storage water tank to realize heat storage at night, utilizes the heat storage at night to assist heating in the daytime, is helpful to save electricity and reduce operation cost. BRIEF DESCRIPTION OF DRAWINGS

[0045] Figure 1 The utility model discloses an embodiment provides the structure schematic diagram of park heating system.

[0046] The following is the explanation of the reference signs:

[0047] 1, air source heat pump;11, first backwater pipe;111, first temperature sensor;112, second temperature sensor;12, first water inlet pipe;121, third temperature sensor;122, fourth temperature sensor;2, first delivery pump;21, first manual valve;22, second manual valve;31, first electromagnetic valve;32, first repair valve;33, second repair valve;34, third repair valve;35, fourth repair valve;41, second electromagnetic valve;42, third manual valve;5, heat storage water tank;51, second water inlet pipe;52, second backwater pipe;61, third electromagnetic valve;62, fourth manual valve;63, fifth manual valve;64, sixth manual valve;65, seventh manual valve;7, second delivery pump;8, plate heat exchanger;81, external heating water inlet end;82, external heating backwater end;83, internal heating backwater end;84, internal heating water outlet end;85, heating backwater pipe;86, heating water inlet pipe. DETAILED DESCRIPTION

[0048] Exemplary embodiments of the present disclosure will be described in greater detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it is understood that the present disclosure can be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art.

[0049] As Figure 1 shown, the utility model provides a park heating system, including:

[0050] Plate heat exchanger 8, plate heat exchanger 8's outside heating water inlet end 81 is connected with the water outlet end of electric boiler, and plate heat exchanger 8's outside heating backwater end 82 is connected with the backwater end of electric boiler;Plate heat exchanger 8's inside heating water outlet end 84 is connected with the water inlet end of indoor heating water distributor through heating water inlet pipe 86, and plate heat exchanger 8's inside heating backwater end 83 is connected with the water outlet end of indoor heating water collector through heating backwater pipe 85;

[0051] Third valve group and second delivery pump 7 are set on heating backwater pipe 85, and second delivery pump 7 is located between third valve group and plate heat exchanger 8's inside heating backwater end 83;

[0052] Heat storage water tank 5;

[0053] Air source heat pump 1, the water outlet end of air source heat pump 1 is connected with the water inlet end of heat storage water tank 5 through first water inlet pipe 12, and the water inlet end of air source heat pump 1 is connected with the water outlet end of heat storage water tank 5 through first backwater pipe 11;

[0054] First delivery pump 2 is set on first water inlet pipe 12;

[0055] First valve group is set on first backwater pipe 11;

[0056] Second backwater pipe 52, the first end of second backwater pipe 52 is connected with first backwater pipe 11, and the connecting place of second backwater pipe 52 and first backwater pipe 11 is located between first valve group and the water outlet end of heat storage water tank 5;The second end of second backwater pipe 52 is connected with heating backwater pipe 85, and the connecting place of second backwater pipe 52 and heating backwater pipe 85 is located between third valve group and second delivery pump 7;

[0057] Second valve group is set on second backwater pipe 52;

[0058] The second water inlet pipe 51 is connected with the first water inlet pipe 12 at the first end, and the connection between the second water inlet pipe 51 and the first water inlet pipe 12 is located between the first conveying pump 2 and the water inlet end of the heat storage water tank 5; the second end of the second water inlet pipe 51 is connected with the heat supply return water pipe 85, and the connection between the second water inlet pipe 51 and the heat supply return water pipe 85 is located between the third valve group and the water outlet end of the indoor heating water collector.

[0059] In this embodiment, the electric boiler works to generate external hot water, the external hot water enters the inside of the plate heat exchanger 8 through the external heat supply water inlet end 81 of the plate heat exchanger 8, under the action of the second conveying pump 7, the internal hot water in the indoor heating water collector enters the inside of the plate heat exchanger 8 through the heat supply return water pipe 85 and the internal heat supply return water end 83 of the plate heat exchanger 8, the internal hot water and the external hot water are heat exchanged in the plate heat exchanger 8, the heat-exchanged external hot water reenters the electric boiler for heating through the external heat supply return water end 82 of the plate heat exchanger 8, and the heat-exchanged internal hot water enters the indoor heating water distributor through the internal heat supply water outlet end 84 of the plate heat exchanger 8 and the heat supply water inlet pipe 86, and cooperates with the indoor heating pipeline to perform indoor heating;

[0060] During the night, the second valve group is closed, the first valve group and the third valve group are completely opened, and the air source heat pump 1 is started, under the action of the first conveying pump 2, the water circulation of the auxiliary water is formed between the air source heat pump 1 and the heat storage water tank 5 through the first water inlet pipe 12 and the second water inlet pipe 51, the air source heat pump 1 continuously heats the auxiliary water in circulation, and the auxiliary hot water is stored in the heat storage water tank 5; during the day, the first valve group is closed, the second valve group is completely opened, and the third valve group is opened by half, because the third valve group is opened by half, the flow capacity of the third valve group is reduced, part of the internal hot water in the indoor heating water collector reflows into the plate heat exchanger 8 through the heat supply return water pipe 85 and the third valve group to be heat-exchanged again, part of the internal hot water in the indoor heating water collector enters the inside of the heat storage water tank 5 through the second water inlet pipe 51, the auxiliary hot water in the inside of the heat storage water tank 5 enters the inside of the plate heat exchanger 8 through the second return water pipe 52 and the heat supply return water pipe 85 to be heat-exchanged, thereby the indoor auxiliary heating is performed by the auxiliary hot water in the inside of the heat storage water tank 5, the heat consumption of the external hot water is reduced, thereby the power consumption of the electric boiler during the day is reduced, because the price of valley electricity during the night is lower than that of peak electricity during the day, the air source heat pump 1 works during the night, utilizes the valley electricity during the night to work, cooperates with the heat storage water tank 5 to realize the heat storage during the night, and utilizes the heat storage during the night to perform the auxiliary heating during the day, which is helpful for saving electricity and reducing operation cost.

[0061] In this embodiment, in the specific application, the volume or the number of the heat storage water tank 5 can be adjusted according to the specific heat supply area, so as to maximize the heat storage by the heat storage water tank 5, and the power consumption of the electric boiler during the day can be reduced.

[0062] In an optional embodiment of the utility model, the park heating system further comprises:

[0063] The photovoltaic power generation system is electrically connected with the air source heat pump 1, and the photovoltaic power generation system and the commercial power supply are connected in parallel for power supply;

[0064] The controller is electrically connected with the photovoltaic power generation system and the air source heat pump 1.

[0065] In the embodiment, the photovoltaic power generation system and the commercial power supply can be connected in parallel by using the existing connection mode, and the switching between the photovoltaic power generation system and the commercial power supply is realized, which will not be described here; the photovoltaic power generation system can comprise a photovoltaic panel, a grid-connected inverter and a bidirectional electric meter, wherein the grid-connected inverter is in communication connection with the controller, and the above connection mode is used to enable the controller to obtain the power supply of the photovoltaic power generation system; when the power generation of the photovoltaic power generation system is greater than the actual load consumption, there is excess power generation, at this time, the photovoltaic power generation system is switched to supply power to the air source heat pump 1; in specific application, other existing connection modes can also be used to enable the controller to detect whether the photovoltaic power generation system has excess power;

[0066] During the night, the air source heat pump 1 is supplied with power by the commercial power supply; during the day, due to the limited heat storage capacity of the heat storage water tank 5, when the heat storage capacity of the heat storage water tank 5 is used up, the second valve group is closed, the third valve group is fully opened, and the hot water generated by the electric boiler is used for heat exchange to realize indoor heating; during this period, if the photovoltaic power generation system has excess power, the air source heat pump 1 is supplied with power by the photovoltaic power generation system, the air source heat pump 1 is turned on, the first valve group is opened, and the heat storage water tank 5 is used for heat storage again; when the heat storage capacity of the heat storage water tank 5 is sufficient, the first valve group is closed, the second valve group is opened, and the third valve group is opened by half, and the heat storage of the heat storage water tank 5 is used for auxiliary heating; by the above mode, the excess power of the photovoltaic power generation system can be used to cooperate with the air source heat pump 1 and the heat storage water tank 5 to store heat during the day, and the heat storage of the heat storage water tank 5 is used for auxiliary heating, which can further reduce the power consumption of the electric boiler during the day and further reduce the operation cost;

[0067] In the embodiment, the controller can be a LUNA2000 series intelligent energy storage controller, and the controller can also be other models of controllers that can realize the above functions.

[0068] In an optional embodiment of the utility model, the first valve group comprises:

[0069] The first electromagnetic valve 31 is electrically connected with the controller, and the connection position of the second water return pipe 52 and the first water return pipe 11 is located between the first electromagnetic valve 31 and the water outlet end of the heat storage water tank 5.

[0070] In the embodiment, through the electrical connection of the first electromagnetic valve 31 and the controller, the opening and closing of the first electromagnetic valve 31 can be controlled by the controller, so that the remote control opening and closing of the first valve group is realized, and the overall operation convenience is improved.

[0071] In an optional embodiment of the utility model, the first valve group further comprises:

[0072] The first maintenance valve 32 is arranged on the first return water pipe 11, and the first maintenance valve 32 is close to the water inlet end of the air source heat pump 1.

[0073] The second maintenance valve 33 is arranged on the first return water pipe 11, and the second maintenance valve 33 is close to the water outlet end of the heat storage water tank 5.

[0074] The third maintenance valve 34 is arranged on the first water inlet pipe 12, and the third maintenance valve 34 is close to the water inlet end of the heat storage water tank.

[0075] The fourth maintenance valve 35 is arranged on the first water inlet pipe 12, and the fourth maintenance valve 35 is close to the water outlet end of the air source heat pump 1.

[0076] In the embodiment, when normal operation, the first maintenance valve 32, the second maintenance valve 33, the third maintenance valve 34 and the fourth maintenance valve 35 are all in the completely open state; when the air source heat pump 1 and the heat storage water tank 5 need to be maintained, the first maintenance valve 32, the second maintenance valve 33, the third maintenance valve 34 and the fourth maintenance valve 35 are closed, so that the air source heat pump 1 and the heat storage water tank 5 are conveniently maintained.

[0077] In an optional embodiment of the utility model, the second valve group comprises:

[0078] The second electromagnetic valve 41 is electrically connected with the controller, and the second electromagnetic valve 41 is close to the connection between the second return water pipe 52 and the first return water pipe 11.

[0079] The third manual valve 42 is close to the connection between the second return water pipe 52 and the heat supply return water pipe 85.

[0080] In the embodiment, when normal use, the third manual valve 42 is in the completely open state, and when maintenance is needed, the third manual valve 42 is closed; when the heat storage is carried out through the heat storage water tank 5, the controller controls the second electromagnetic valve 41 to be in the closed state; when the auxiliary heating is carried out through the heat storage water tank 5, the controller controls the second electromagnetic valve 41 to be opened; the opening and closing of the second electromagnetic valve 41 are controlled by the controller, remote control is realized, and the overall operation convenience is improved.

[0081] In the optional embodiment of the utility model, the third valve group comprises:

[0082] The third electromagnetic valve 61 is electrically connected with the controller, and is located between the connection between the second water inlet pipe 51 and the heat supply return water pipe 85 and the connection between the second return water pipe 52 and the heat supply return water pipe 85.

[0083] In this embodiment, when the heat storage water tank 5 is used for heat storage, the controller controls the third electromagnetic valve 61 to be fully opened, and when the heat storage water tank 5 is used for auxiliary heating, the controller controls the third electromagnetic valve 61 to be opened by half; the opening and closing of the third electromagnetic valve 61 are controlled by the controller, remote control is realized, and the overall operation convenience is improved.

[0084] In the optional embodiment of the utility model, the third valve group further comprises:

[0085] The fifth manual valve 63 is connected with the third electromagnetic valve 61, and is located between the third electromagnetic valve 61 and the connection between the second return water pipe 52 and the heat supply return water pipe 85;

[0086] The sixth manual valve 64 is connected with the third electromagnetic valve 61, and is located between the third electromagnetic valve 61 and the connection between the second water inlet pipe 51 and the heat supply return water pipe 85;

[0087] The fourth manual valve 62 is connected in parallel with the sixth manual valve 64, the third electromagnetic valve 61 and the fifth manual valve 63;

[0088] The seventh manual valve 65 is arranged on the second water inlet pipe 51 and is close to the connection between the second water inlet pipe 51 and the heat supply return water pipe 85.

[0089] In this embodiment, under normal conditions, the fifth manual valve 63, the sixth manual valve 64 and the seventh manual valve 65 are all in the opened state, and the fourth manual valve 62 is in the closed state; when the third electromagnetic valve 61 needs to be maintained, the fourth manual valve 62 is opened, and the fifth manual valve 63, the sixth manual valve 64 and the seventh manual valve 65 are closed, so that the third electromagnetic valve 61 can be maintained under the condition of ensuring normal heating.

[0090] In the optional embodiment of the utility model, the park heat supply system further comprises:

[0091] The first temperature sensor 111 is arranged on the first return water pipe 11, is close to the water inlet end of the air source heat pump 1, and is electrically connected with the controller;

[0092] A second temperature sensor 112 is arranged on the first return water pipe 11, and is close to the water outlet end of the heat storage water tank 5, and is electrically connected with the controller;

[0093] A third temperature sensor 121 is arranged on the first water inlet pipe 12, and is close to the water outlet end of the air source heat pump 1, and is electrically connected with the controller;

[0094] A fourth temperature sensor 122 is arranged on the first water inlet pipe 12, and is close to the water inlet end of the heat storage water tank 5, and is electrically connected with the controller.

[0095] In this embodiment, the first temperature sensor 111 detects the water inlet temperature of the water inlet end of the air source heat pump 1 as a first temperature signal, and transmits the first temperature signal to the controller;

[0096] The third temperature sensor 121 detects the water outlet temperature of the water outlet end of the air source heat pump 1 as a second temperature signal, and transmits the second temperature signal to the controller;

[0097] The controller obtains a first temperature difference according to the difference between the first temperature signal and the second temperature signal, when the first temperature difference is greater than a first preset temperature value, it indicates that the air source heat pump 1 is normal, and when the first temperature difference is less than the first preset temperature value, it indicates that the air source heat pump 1 is abnormal, and needs to be repaired in time;

[0098] The second temperature sensor 112 detects the water outlet temperature of the water outlet end of the heat storage water tank 5 as a third temperature signal, and transmits the third temperature signal to the controller;

[0099] The fourth temperature sensor 122 detects the water inlet temperature of the water inlet end of the heat storage water tank 5 as a fourth temperature signal, and transmits the fourth temperature signal to the controller;

[0100] The controller judges the heat storage state of the heat storage water tank 5 according to the third temperature signal and the fourth temperature signal; specifically, when the heat storage, the difference between the fourth temperature signal and the third temperature signal gradually decreases to a preset temperature range, and the third temperature signal and the fourth temperature signal are both greater than a second preset temperature value, it indicates that the heat storage of the heat storage water tank 5 has been completed; when the auxiliary heating, when the third temperature signal is less than a third preset temperature value, it indicates that the heat storage energy of the heat storage water tank 5 has been completely consumed, the controller controls the second electromagnetic valve 41 to be closed, and the third electromagnetic valve 61 to be completely opened, and completely relies on the hot water generated by the electric boiler to carry out indoor heating.

[0101] In the optional embodiment of the utility model, two second conveying pumps 7 are arranged, and the two second conveying pumps 7 are connected in parallel.

[0102] In the embodiment, two second conveying pumps 7 are arranged, and the two conveying pumps are connected in parallel, when one of the conveying pumps is abnormal, the other conveying pump is used to work, and the abnormal conveying pump is maintained and repaired while normal heating is ensured.

[0103] In the optional embodiment of the utility model, two first conveying pumps 2 are arranged, and the two first conveying pumps 2 are connected in parallel.

[0104] The water inlet end of the two first conveying pumps 2 is connected with a first manual valve 21, and the water outlet end of the two first conveying pumps 2 is connected with a second manual valve 22.

[0105] In the embodiment, two first conveying pumps 2 are arranged, and the two first conveying pumps 2 are connected in parallel, when one of the conveying pumps is abnormal, the other conveying pump is used to work, and the abnormal conveying pump is maintained and repaired while normal heating is ensured.

[0106] Through the opening and closing of the first manual valve 21 and the second manual valve 22, the water circuit of the first conveying pump 2 can be opened and closed, and the first conveying pump 2 is maintained and repaired.

[0107] The working process of the park heating system is as follows:

[0108] During the night, the air source heat pump 1 is powered by the commercial power, the controller controls the second electromagnetic valve 41 to be closed, the first electromagnetic valve 31 and the third electromagnetic valve 61 to be completely opened, and the air source heat pump 1 to be opened, under the action of the first conveying pump 2, the air source heat pump 1 and the heat storage water tank 5 form a water circulation of auxiliary water through the first water inlet pipe 12 and the second water inlet pipe 51, the air source heat pump 1 continuously heats the auxiliary water in circulation, the heat storage water tank 5 stores the auxiliary hot water, the difference between the fourth temperature signal collected by the fourth temperature sensor 122 and the third temperature signal collected by the third temperature sensor 121 gradually decreases to a preset temperature range, and when the third temperature signal and the fourth temperature signal are both greater than a second preset temperature value, it indicates that the heat storage water tank 5 has completed heat storage, the controller controls the air source heat pump 1 and the first conveying pump 2 to be closed, and the controller controls the first electromagnetic valve 31 to be closed, and the heat storage is completed.

[0109] During the day, the controller controls the second electromagnetic valve 41 to open, the first electromagnetic valve 31 to close, and the third electromagnetic valve 61 to open half, so that part of the internal hot water in the indoor heating water collector enters the plate heat exchanger 8 again through the heat supply return pipe 85 and the third valve group return, part of the internal hot water in the indoor heating water collector enters the heat storage water tank 5 through the second water inlet pipe 51, the auxiliary hot water in the heat storage water tank 5 exchanges heat in the plate heat exchanger 8 through the second water return pipe 52 and the heat supply return pipe 85, so as to perform auxiliary heating in the room by the auxiliary hot water in the heat storage water tank 5; when the third temperature signal collected by the third temperature sensor 121 is less than the third preset temperature value, it indicates that the heat storage energy of the heat storage water tank 5 has been completely consumed, the controller controls the second electromagnetic valve 41 to close and the third electromagnetic valve 61 to open completely, and the indoor heating is completely dependent on the hot water generated by the electric boiler; when the heat storage in the heat storage water tank 5 is exhausted, if there is excess power in the photovoltaic power generation system, the air source heat pump 1 is powered by the photovoltaic power generation system, the air source heat pump 1 is opened, the first electromagnetic valve 31 is opened, and the second electromagnetic valve 41 is closed, and the heat storage is performed through the heat storage water tank 5; when the difference between the fourth temperature signal collected by the fourth temperature sensor 122 and the third temperature signal collected by the third temperature sensor 121 gradually decreases to a preset temperature range, and the third temperature signal and the fourth temperature signal are greater than the second preset temperature value, it indicates that the heat storage of the heat storage water tank 5 has been completed, the controller controls the air source heat pump 1 and the first conveying pump 2 to close, the controller controls the first electromagnetic valve 31 to close, the second electromagnetic valve 41 to open, and the third electromagnetic valve 61 to open half, and the auxiliary heating is performed by using the heat storage of the heat storage water tank 5.

[0110] Through the above process, the valley electricity during the night and the excess power of the photovoltaic power generation system during the day can be fully utilized to cooperate with the air source heat pump 1 and the heat storage water tank 5 to store heat, and during the day, the auxiliary heating is performed by using the heat storage of the heat storage water tank 5, which helps to save the power consumption of the electric boiler and reduce the overall operation cost.

[0111] The above is the preferred embodiment of the present application, it should be pointed out that for ordinary skilled in the art, without departing from the principle of the present application, a number of improvements and refinements can be made, these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A park heating system, characterized in that: include: The plate heat exchanger (8) has an external heating water inlet (81) connected to the outlet of the electric boiler, and an external heating water return (82) connected to the return of the electric boiler. The internal heating water outlet (84) of the plate heat exchanger (8) is connected to the inlet of the indoor heating manifold via a heating water inlet pipe (86), and the internal heating water return (83) of the plate heat exchanger (8) is connected to the outlet of the indoor heating water collector via a heating water return pipe (85). The third valve group and the second delivery pump (7) are installed on the heating return water pipe (85), and the second delivery pump (7) is located between the third valve group and the internal heating return water end (83) of the plate heat exchanger (8); Hot water storage tank (5); An air source heat pump (1) is provided, wherein the outlet of the air source heat pump (1) is connected to the inlet of the hot water storage tank (5) through a first inlet pipe (12), and the inlet of the air source heat pump (1) is connected to the outlet of the hot water storage tank (5) through a first return pipe (11). A first delivery pump (2) is installed on the first water inlet pipe (12); The first valve group is installed on the first return water pipe (11); The second return water pipe (52) has its first end connected to the first return water pipe (11), and the connection between the second return water pipe (52) and the first return water pipe (11) is located between the first valve group and the outlet end of the hot water storage tank (5); the second end of the second return water pipe (52) is connected to the heating return water pipe (85), and the connection between the second return water pipe (52) and the heating return water pipe (85) is located between the third valve group and the second delivery pump (7); A second valve assembly is installed on the second return water pipe (52); The second inlet pipe (51) has its first end connected to the first inlet pipe (12), and the connection between the second inlet pipe (51) and the first inlet pipe (12) is located between the first delivery pump (2) and the inlet end of the hot water storage tank (5); the second end of the second inlet pipe (51) is connected to the heating return water pipe (85), and the connection between the second inlet pipe (51) and the heating return water pipe (85) is located between the third valve group and the outlet end of the indoor heating water collector.

2. The park heating system according to claim 1, characterized in that, Also includes: The photovoltaic power generation system is electrically connected to the air source heat pump (1), and the photovoltaic power generation system is connected in parallel with the mains power supply. The controller is electrically connected to both the photovoltaic power generation system and the air source heat pump (1).

3. The park heating system according to claim 2, characterized in that, The first valve assembly includes: The first solenoid valve (31) is electrically connected to the controller, and the connection between the second return water pipe (52) and the first return water pipe (11) is located between the first solenoid valve (31) and the outlet of the hot water storage tank (5).

4. The park heating system according to claim 3, characterized in that, The first valve assembly also includes: The first maintenance valve (32) is installed on the first return water pipe (11) and is close to the water inlet of the air source heat pump (1). The second maintenance valve (33) is installed on the first return water pipe (11) and is located near the outlet of the hot water storage tank (5). The third inspection valve (34) is installed on the first water inlet pipe (12) and is located near the water inlet end of the hot water storage tank. The fourth maintenance valve (35) is installed on the first water inlet pipe (12) and is located near the water outlet of the air source heat pump (1).

5. The park heating system according to claim 2, characterized in that, The second valve assembly includes: The second solenoid valve (41) is electrically connected to the controller and is located near the connection between the second return water pipe (52) and the first return water pipe (11). The third manual valve (42) is located near the connection between the second return water pipe (52) and the heating return water pipe (85).

6. The park heating system according to claim 2, characterized in that, The third valve assembly includes: The third solenoid valve (61) is electrically connected to the controller and is located between the connection between the second inlet pipe (51) and the heating return pipe (85) and the connection between the second return pipe (52) and the heating return pipe (85).

7. The park heating system according to claim 6, characterized in that, The third valve assembly also includes: The fifth manual valve (63) is connected to the third solenoid valve (61). The fifth manual valve (63) is located between the third solenoid valve (61) and the connection between the second return water pipe (52) and the heating return water pipe (85). The sixth manual valve (64) is connected to the third solenoid valve (61) and is located between the third solenoid valve (61) and the connection between the second inlet pipe (51) and the heating return pipe (85). The fourth manual valve (62) is connected in parallel with the sixth manual valve (64), the third solenoid valve (61) and the fifth manual valve (63); A seventh manual valve (65) is installed on the second water inlet pipe (51), the seventh manual valve (65) being located near the connection between the second water inlet pipe (51) and the heating return water pipe (85).

8. The park heating system according to claim 2, characterized in that, Also includes: The first temperature sensor (111) is installed on the first return water pipe (11) and is close to the water inlet of the air source heat pump (1). The first temperature sensor (111) is electrically connected to the controller. The second temperature sensor (112) is installed on the first return water pipe (11) and is close to the outlet of the hot water storage tank (5). The second temperature sensor (112) is electrically connected to the controller. The third temperature sensor (121) is installed on the first water inlet pipe (12) and is close to the water outlet of the air source heat pump (1). The third temperature sensor (121) is electrically connected to the controller. The fourth temperature sensor (122) is installed on the first water inlet pipe (12) near the water inlet end of the hot water storage tank (5) and is electrically connected to the controller.

9. The park heating system according to claim 1, characterized in that, There are two second delivery pumps (7), and the two second delivery pumps (7) are connected in parallel.

10. The park heating system according to claim 1, characterized in that, There are two first delivery pumps (2), and the two first delivery pumps (2) are connected in parallel; The inlet of each of the two first delivery pumps (2) is connected to a first manual valve (21), and the outlet of each of the two first delivery pumps (2) is connected to a second manual valve (22).

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