CN219735426U - Heat supply system - Google Patents

Abstract

The utility model provides a heating system which comprises a reservoir, a first water source heat pump, a first heating area, a second heating area, a third heating area, a second water source heat pump, a controller, a first wide-flow-passage isolation plate type heat exchanger, a first air fin tube type heat exchanger, a second wide-flow-passage isolation plate type heat exchanger and a second air fin tube type heat exchanger. The reservoir, the first air fin tube heat exchanger and the second air fin tube heat exchanger are used as low-quality heat sources, so that the supply stability of the low-quality heat sources can be improved, and the first water source heat pump, the second heat source water pump and the third heat source water pump can be used for realizing large-temperature-difference heat supply, so that the energy consumption of the water pump can be effectively reduced. The heat supply system has the characteristics of low energy consumption, stable heat source and the like, and can avoid the occurrence of local icing and blockage of the heat pump under the condition of realizing heat exchange of the reclaimed water with large temperature difference.

Description

Heat supply system

Technical Field

The utility model relates to the technical field of new energy clean heat supply, in particular to a heat supply system.

Background

At present, the heat supply modes in the technical field of new energy clean heat supply are various, and mainly comprise air source heat pump heat supply, river water source heat pump heat supply, geothermal source heat supply, solar heat supply and the like.

The air source heat pump mainly comprises an evaporator, a condenser, a compressor, a throttling device and other equipment, wherein the compressor is driven to operate by electric energy, and a refrigerant is compressed and condensed by the compressor and the condenser and then enters the evaporator to be evaporated to a gaseous state and then enters the compressor to be sequentially circulated. During the cycle, the refrigerant absorbs low-quality heat from the air, and releases high-quality heat in the condenser for heating the heating return water. The air source heat pump heating system is flexible to install because the main equipment is not limited by a heat source, and is widely applied to the south area of China. However, the method has certain defects, and at present, the following two problems mainly exist: the efficiency is low below-12 ℃ in outdoor dry bulb temperature in extremely cold weather, and the outdoor dry bulb temperature cannot be generally applied below-35 ℃;2 the evaporator is prone to frosting during operation in extremely cold weather.

Unlike air source heat pump heat supply system, the river water source heat pump heat supply system uses river water as heat source, and utilizes heat pump technology to extract heat from river water for heating back water. At present, the water heater is mainly influenced by factors such as river water temperature, flow and the like, and stable and efficient heat supply cannot be ensured during a heating season.

The geothermal source heat supply system utilizes geothermal resources, sends a heat exchange medium into the ground through a shallow or medium deep ground well, extracts heat from soil or groundwater, and extracts the heat from the medium through a heat exchange or heat pump device for heating and backwater. The main problem at present is that periodic heat supplement is needed, and the problem of unbalanced underground heat is solved.

The solar heat supply system is used for heating a user by utilizing solar heat energy and by means of a solar heat collection device and matching with other clean heating modes with good stability. The solar air heating system can be divided into 2 types of solar hot water heating systems. The main problem of the current restriction of the development is that the hot water cannot be stably supplied under the influence of weather and night temperature, and the hot water needs to be complementarily operated with other stable clean heat supply modes.

The traditional single sewage source heat pump heating system mostly adopts a single-stage heat pump to heat, the heat source is a single heat source for discharging sewage, the problems and risks of instability and the like of the heating system caused by low sewage low-quality heat recovery utilization rate and sewage shortage exist, and meanwhile, the temperature difference of main pipe water supply and return of the heating system is within 10 ℃, and the problems of large heating water demand, high water pump energy consumption and the like exist.

Disclosure of Invention

The utility model aims to provide a heating system which has the characteristics of low energy consumption, stable heat source and the like, and can avoid the occurrence of local icing and blockage of a heat pump under the condition of realizing heat exchange of a large temperature difference of reclaimed water.

The technical scheme adopted for solving the technical problems is as follows: the heat supply system comprises a reservoir, a first water source heat pump, a first heating area, a second heating area, a third heating area, a second water source heat pump, a first wide-flow-channel isolation plate heat exchanger, a first air fin tube heat exchanger, a second wide-flow-channel isolation plate heat exchanger and a second air fin tube heat exchanger, wherein a first pipeline is arranged between the reservoir, the first wide-flow-channel isolation plate heat exchanger and the second wide-flow-channel isolation plate heat exchanger, the first pipeline is used for realizing independent water supply of the first wide-flow-channel isolation plate heat exchanger or sequential water supply of the first wide-flow-channel isolation plate heat exchanger and the second wide-flow-channel isolation plate heat exchanger, a second pipeline for heat exchange medium circulation is arranged between the first wide-flow-channel isolation plate heat exchanger, the first air fin tube heat exchanger and the first water source heat pump, a third pipeline is arranged between the first water source heat pump, the second water source heat pump, the first heating area, the second heating area and the third pipeline is used for realizing heating circulation and heat release of the first wide-flow-channel isolation plate heat exchanger, the second pipeline is arranged between the second water source heat pump, the second pipeline is used for realizing heat exchange medium circulation of the second pipeline, and the fourth water source heat pump is used for controlling the pipeline.

Preferably, the first pipeline comprises a first water pump, a first pipeline, a second pipeline, a third pipeline and a fourth pipeline, the first pipeline is used for realizing the penetration of the water reservoir and the water inlet port of the heat absorption side of the first wide-channel isolation plate heat exchanger, the first water pump is connected in series with the first pipeline, the second pipeline is used for realizing the penetration of the water outlet port of the heat absorption side of the first wide-channel isolation plate heat exchanger and the outside, the third pipeline and the fourth pipeline are used for realizing the penetration of the heat absorption side of the second wide-channel isolation plate heat exchanger and the second pipeline, a thirteenth electric valve and a fourteenth electric valve are respectively connected in series with the third pipeline and the fourth pipeline, and the fifteenth electric valve is arranged on the second pipeline and is positioned at the downstream of the joint of the second pipeline and the third pipeline and at the upstream of the joint of the second pipeline and the fourth pipeline.

Further, the second pipeline comprises a fifth pipeline, a sixth pipeline, a seventh pipeline, an eighth pipeline and a second water pump, the fifth pipeline and the sixth pipeline are communicated with the heat absorption side of the first wide-flow-channel isolation plate heat exchanger, the second water pump is arranged on the fifth pipeline, the seventh pipeline is communicated with the water outlet end of the first air fin tube heat exchanger, the joint of the seventh pipeline and the fifth pipeline is located at the upstream of the second water pump, the eighth pipeline is communicated with the water inlet end of the first air fin tube heat exchanger, a nineteenth electric valve located at the upstream of the joint of the fifth pipeline and the seventh pipeline is connected in series with the fifth pipeline, a twenty-first electric valve and a twenty-second electric valve located at the downstream of the joint of the sixth pipeline and the eighth pipeline are connected in series with the sixth pipeline, and the twenty-first electric valve and the twenty-second electric valve are connected in series with the seventh pipeline respectively.

Further, the third pipeline comprises a ninth pipeline, a tenth pipeline, an eleventh pipeline, a twelfth pipeline, a third water pump, a fourth water pump, a fifth water pump and a third water source heat pump, wherein the ninth pipeline realizes the penetration of the water outlet end of the heat release side of the first water source heat pump and the water inlet end of the second heating zone, the fourth water pump is connected on the ninth pipeline in series, the tenth pipeline realizes the penetration of the ninth pipeline and the water inlet end of the first heating zone, the joint of the ninth pipeline and the tenth pipeline is positioned at the upstream of the fourth water pump, the eleventh pipeline realizes the penetration of the ninth pipeline and the water inlet end of the third heating zone, the joint of the eleventh pipeline and the ninth pipeline is positioned at the downstream of the fourth water pump, the fifth water pump is connected on the eleventh pipeline in series, the twelfth pipeline realizes the penetration of the water outlet end of the third heating zone and the water inlet end of the heat release side of the first water source heat pump, the third water pump is connected in series with a twelfth pipeline, the heat release side of the second water source heat pump is communicated with the pipe section of a ninth pipeline positioned at the upstream of the joint of the ninth pipeline and the tenth pipeline through a fifth pipeline, the fifth pipeline comprises a thirteenth pipeline and a fourteenth pipeline, the thirteenth pipeline and the fourteenth pipeline are respectively connected in series with a third electric valve and a fourth electric valve, the ninth pipeline is connected in series with a second electric valve, the second electric valve is positioned at the downstream of the joint of the ninth pipeline and the thirteenth pipeline and at the upstream of the joint of the ninth pipeline and the fourteenth pipeline, the water outlet end of the first heating zone is communicated with the eleventh pipeline through a fifteenth pipeline, the water outlet end of the second heating zone is communicated with the eleventh pipeline through a sixteenth pipeline, the water inlet end and the water outlet end of the heat-absorbing side of the third water source heat pump are communicated with an eleventh pipeline through a seventeenth pipeline and an eighteenth pipeline respectively, a seventh electric valve is connected in series on the pipeline section of the eleventh pipeline between the seventeenth pipeline and the eighteenth pipeline, the heat-absorbing side of the third water source heat pump is communicated with a twelfth pipeline through a nineteenth pipeline and a twentieth pipeline, an eighth electric valve is connected in series on the pipeline section of the twelfth pipeline between the nineteenth pipeline and the twentieth pipeline, a sixth manual valve is connected in series on the eleventh pipeline and is positioned at the upstream of the joint of the seventeenth pipeline and the eleventh pipeline, and a fifth manual valve is connected in series on the eleventh pipeline and is positioned at the upstream of the joint of the sixteenth pipeline and the eleventh pipeline.

Further, the fourth pipeline comprises a twenty-first pipeline, a twenty-second pipeline, a twenty-third pipeline, a twenty-fourth pipeline and a sixth water pump, the twenty-first pipeline and the twenty-second pipeline realize the penetration of the heat release side of the second wide-flow-channel isolation plate type heat exchanger and the heat absorption side of the second water source heat pump, the sixth water pump is arranged on the twenty-first pipeline, the twenty-third pipeline realizes the penetration of the twenty-first pipeline and the water outlet end of the second air fin tube type heat exchanger, the joint of the twenty-first pipeline and the twenty-third pipeline is positioned at the upstream of the sixth water pump, the twenty-fourth pipeline realizes the penetration of the twenty-second pipeline and the water inlet end of the second air fin tube type heat exchanger, a ninth electric valve positioned at the upstream of the joint of the twenty-first pipeline and the twenty-third pipeline is connected on the twenty-second pipeline in series, an eleventh electric valve positioned at the downstream of the joint of the twenty-second pipeline and the twenty-third pipeline is connected on the twenty-second pipeline in series, and a twenty-fourth electric valve is connected on the twenty-second pipeline in series respectively.

Further, the heating system also includes a glycol coolant expansion tank for providing glycol coolant to the second and fourth lines.

Further, a first liquid level sensor is arranged in the reservoir, a second temperature sensor is arranged on the second pipeline, a sixth temperature sensor is arranged on the ninth pipeline, a nineteenth temperature sensor is arranged on the fourth pipeline, and a twelfth temperature sensor positioned at the downstream of the fifth water pump is arranged on the eleventh pipeline.

The beneficial effects of the utility model are as follows:

energy saving and efficiency improvement. The system adopts a three-stage water source heat pump to realize a double-large-temperature-difference small-flow running mode of a medium water side and a heating side, so that the hydraulic balance of a pipe network is further optimized, the stability of the pipe network is improved, and the power consumption of a water pump is further reduced; the system has two operation modes of cold weather at the beginning and the end of a heating season and extremely cold weather at the middle of the heating season, can be flexibly switched according to the temperature of the external environment, and can be used for controlling the start and stop of equipment, so that the power consumption of the system can be effectively further reduced.

The double heat sources are ensured, and the heat supply is more stable. The system adopts an energy complementary mode of combining a reclaimed water heat source and an air energy heat source, and solves the problems of poor heating effect and the like caused by instability of a single heat source in the traditional single sewage source heat pump heating system.

The reclaimed water heat exchange is efficient and stable. The front two-stage heat pump of the system adopts a wide-flow-passage separation plate type heat exchanger and a water source heat pump technology, and solves the problem that the heat pump equipment is frozen and cracked locally due to the excessively low temperature of reclaimed water on the premise of effectively realizing the large heat exchange temperature difference of the reclaimed water above 10 ℃; and the problems of corrosion, blockage and the like of heat pump equipment caused by excessive reclaimed water impurities.

And the heating is stable. The heating user adopts a serial-parallel connection mode to realize the effective heating of users with different tail end forms such as radiators, floor heaters and the like.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are some preferred embodiments of the utility model and that other drawings can be obtained from these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the system principle of the present utility model;

FIG. 2 is a diagram of the operational control logic of the present utility model;

in the figure: 11 impounding reservoirs, 2 first water pumps, 3 first electromagnetic heat flow meters, 4 first wide-channel separation plate heat exchangers, 5 second water pumps, 6 first water source heat pumps, 7 third water pumps, 8 second electromagnetic heat flow meters, 9 first heating areas, 10 fourth water pumps, 11 third electromagnetic heat flow meters, 12 second heating areas, 13 fifth water pumps, 14 fourth electromagnetic heat flow meters, 15 third heating areas, 16 third water source heat pumps, 17 second water source heat pumps, 18 sixth water pumps, 19 second wide-channel separation plate heat exchangers, 20 second air fin tubular heat exchangers, 21 glycol secondary refrigerant expansion tanks, 22 water supplementing pumps, 23 water supplementing tanks, 24 softened water treatment devices, 25 first air fin tubular heat exchangers, 101 first temperature sensors, 102 second temperature sensors, 103 third temperature sensors, 104 fourth temperature sensors, 105 fifth temperature sensors, 106 sixth temperature sensors, third temperature sensors, fourth temperature sensors 107 seventh temperature sensor, 108 eighth temperature sensor, 109 ninth temperature sensor, 110 tenth temperature sensor, 111 eleventh temperature sensor, 112 twelfth temperature sensor, 113 thirteenth temperature sensor, 114 fourteenth temperature sensor, 115 fifteenth temperature sensor, 116 sixteenth temperature sensor, 117 seventeenth temperature sensor, 118 eighteenth temperature sensor, 119 nineteenth temperature sensor, 120 twentieth temperature sensor, 121 twenty first temperature sensor, 122 twenty second temperature sensor, 123 twenty third temperature sensor, 124 twentieth temperature sensor, 125 twenty fifth temperature sensor, 201 first pressure sensor, 202 second pressure sensor, 203 third pressure sensor, 204 fourth pressure sensor, 205 fifth pressure sensor, 206 sixth pressure sensor, 207 seventh pressure sensor, 208 eighth pressure sensor, 209 ninth pressure sensor, 210 tenth pressure sensor, 211 eleventh pressure sensor, 212 twelfth pressure sensor, 213 thirteenth pressure sensor, 214 fourteenth pressure sensor, 215 fifteenth pressure sensor, 216 sixteenth pressure sensor, 217 seventeenth pressure sensor, 218 eighteenth pressure sensor, 219 nineteenth pressure sensor, 220 twentieth pressure sensor, 221 twenty first pressure sensor, 222 twenty second pressure sensor, 223 twenty third pressure sensor, 224 twenty fourth pressure sensor, 225 twenty fifth pressure sensor, 301 first liquid level sensor, 302 second electrically operated valve, 303 third electrically operated valve, 304 fourth electrically operated valve, 305 fifth electrically operated valve, 306 sixth electrically operated valve, 307 seventh electrically operated valve, 308 eighth electrically operated valve, 309 ninth electrically operated valve, 310 tenth electrically operated valve, 311 eleventh electrically operated valve 312 twelfth electrically operated valve, 313 thirteenth electrically operated valve, 314 fourteenth electrically operated valve, 315 fifteenth electrically operated valve, 316 sixteenth electrically operated valve, 317 seventeenth electrically operated valve, 318 eighteenth electrically operated valve, 319 nineteenth electrically operated valve, 320 twenty-first electrically operated valve, 321 twenty-first electrically operated valve, 322 twenty-second electrically operated valve, 401 first conduit, 402 second conduit, 403 third conduit, 404 fourth conduit, 405 fifth conduit, 406 sixth conduit, 407 seventh conduit, 408 eighth conduit, 409 ninth conduit, 410 tenth conduit, 411 eleventh conduit, 412 twelfth conduit, 413 thirteenth conduit, 414 fourteenth conduit, 415 fifteenth conduit, 416 sixteenth conduit, 417 seventeenth conduit, 418 eighteenth conduit, 419 nineteenth conduit, 420 twenty-fourth conduit, 421 twenty-first conduit, 422 twenty-second conduit, 423 twenty-third conduit, 424 twenty-fourth conduit, 425 twenty-fifth conduit, 426 twenty-sixth conduit, 427 twenty-seventh conduit.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to specific embodiments and fig. 1-2, and it is apparent that the described embodiments are only some of the preferred embodiments of the present utility model, but not all embodiments. Similar modifications can be made by those skilled in the art without departing from the spirit of the utility model, and therefore the utility model is not to be limited by the specific embodiments disclosed below.

The utility model provides a heating system, as shown in figure 1, which comprises a reservoir 1, a first water source heat pump 6, a first heating area 9, a second heating area 12, a third heating area 15, a second water source heat pump 17, a controller, a first wide-flow-passage isolation plate type heat exchanger 4, a first air fin tube type heat exchanger 25, a second wide-flow-passage isolation plate type heat exchanger 19 and a second air fin tube type heat exchanger 20, wherein the reservoir 1 is used for storing medium water discharged from a sewage treatment plant, the first heating area 9 and the second heating area 12 are heating residential communities heated by heating plates, the third heating area 15 is a heating residential community heated by heating pipes, and the water source heat pump, the isolation plate type heat exchanger and the fin tube type heat exchanger are all known technical products in the field, so that the structures of the water source heat pump, the isolation plate type heat exchanger and the fin tube type heat exchanger are not described in detail herein; a first pipeline is arranged among the reservoir 1, the first wide-flow-passage isolation plate heat exchanger 4 and the second wide-flow-passage isolation plate heat exchanger 19, and is used for realizing independent water supply of the first wide-flow-passage isolation plate heat exchanger 4 or sequential water supply of the first wide-flow-passage isolation plate heat exchanger 4 and the second wide-flow-passage isolation plate heat exchanger 19, and when the reservoir 1 can supply water by utilizing the first pipeline, the water in the reservoir 1 can be used as a low-quality heat source; a second pipeline for heat exchange medium circulation is arranged among the first wide-flow-passage separation plate type heat exchanger 4, the first air fin tube type heat exchanger 25 and the first water source heat pump 6, and the first air fin tube type heat exchanger 25 can be used as a standby heat source by reasonably controlling the second pipeline by a controller, so that the heat source supply stability of the first water source heat pump 6 is improved; a third pipeline is arranged among the first water source heat pump 6, the second water source heat pump 17, the first heating area 9, the second heating area 12 and the third heating area 15, the third pipeline is used for realizing the circulation heating and heat release of heating water, a fourth pipeline for realizing the circulation of heat exchange media is arranged among the second wide-flow-passage isolation plate type heat exchanger 19, the second air fin tube type heat exchanger 20 and the second water source heat pump 17, the second air fin tube type heat exchanger 20 can be used as a standby heat source by utilizing the reasonable control of the controller, so that the heat source supply stability of the second water source heat pump 17 is improved, the heat source supply stability of the first water source heat pump 6 and the second water source heat pump 17 is stable, the stable heating of the heating water by the third pipeline is facilitated, the stability of heating is realized, meanwhile, the large temperature difference heat exchange is realized by utilizing the first water source heat pump 6 and the second water source heat pump 17, and the energy consumption of the water pump can be effectively reduced; the controller is used for controlling the operation of the first pipeline, the second pipeline, the third pipeline, the fourth pipeline, the first water source heat pump 6 and the second water source heat pump 17.

Based on the above embodiment, the specific implementation manner of the first pipeline is as follows: the first pipeline comprises a first water pump 2, a first pipeline 401, a second pipeline 402, a third pipeline 403 and a fourth pipeline 404, the first pipeline 401 realizes the penetration of the reservoir 1 and the water inlet port of the heat absorption side of the first wide flow channel isolation plate type heat exchanger 4, the reclaimed water discharged by the sewage treatment plant is conveyed into the reservoir 1 through the pipeline, the first water pump 2 is connected in series on the first pipeline 401, the second pipeline 402 realizes the penetration of the water outlet port of the heat absorption side of the first wide flow channel isolation plate type heat exchanger 4 and the outside, namely, the water flow flowing out of the water outlet port of the heat absorption side of the first wide flow channel isolation plate type heat exchanger 4 can be directly discharged to the outside through the second pipeline 402, the third pipeline 403 and the fourth pipeline 404 realize the penetration of the heat absorption side of the second wide flow channel isolation plate type heat exchanger 19, the thirteenth electric valve 313 and the fourteenth electric valve 314 are respectively arranged on the third pipeline 403 and the fourth pipeline 404, the fifteenth electric valve is arranged on the second pipeline 402, the fifteenth electric valve is connected in series with the thirteenth electric valve 313 and the fourteenth electric valve 314 when the water outlet port of the heat absorption side of the first wide flow channel isolation plate type heat exchanger 4 is directly discharged to the outside through the second pipeline 402, and the thirteenth electric valve 314 is opened, and the thirteenth valve is connected in series on the water outlet port of the second pipeline 404 is positioned on the water outlet port of the second wide flow channel isolation plate type heat exchanger 19, and the electric valve is directly connected with the water outlet port of the fourteenth electric valve, and the electric valve is opened, and the fifteenth valve is connected to the electric valve, and the electric valve is opened, and the electric valve is connected to the water valve is opened.

Based on the above embodiment, the specific implementation manner of the second pipeline is as follows: the second pipeline comprises a fifth pipeline 405, a sixth pipeline 406, a seventh pipeline 407, an eighth pipeline 408 and a second water pump 5, the fifth pipeline 405 and the sixth pipeline 406 realize the penetration of the heat release side of the first wide-flow-path isolation plate heat exchanger 4 and the heat absorption side of the first water source heat pump 6, specifically, the fifth pipeline 405 is utilized to circulate the water flow of the first wide-flow-path isolation plate heat exchanger 4 to the first water source heat pump 6, the second water pump 5 is arranged on the fifth pipeline 405, the seventh pipeline 407 realizes the penetration of the fifth pipeline 405 and the water outlet end of the first air fin tube heat exchanger 25, the connection position of the seventh pipeline 407 and the fifth pipeline 405 is positioned at the upstream of the second water pump 5, the eighth pipeline 408 realizes the penetration of the sixth pipeline 406 and the water inlet end of the first air fin tube heat exchanger 25, the fifth pipeline 405 is connected in series with a fifth electric valve 406 positioned at the upstream of the connection position of the fifth pipeline 405 and the seventh pipeline 407, and the eighth pipeline 408 is connected in series with a twenty-first electric valve 321 and the eighth pipeline 408 is connected in series with the twenty-eighth electric valve 320 at the downstream of the fifth pipeline 408. When the nineteenth and twentieth electrically operated valves 319 and 320 are closed and the twenty first and twenty second electrically operated valves 321 and 322 are open, the first air-fin tube heat exchanger 25 serves as a heat source for the first water source heat pump 6, and when the nineteenth and twentieth electrically operated valves 319 and 320 are open, the twenty first and twenty second electrically operated valves 321 and 322 are closed, and the first wide flow path separator plate heat exchanger 4 serves as a heat source for the first water source heat pump 6.

Further, based on the above embodiment, the specific implementation manner of the third pipeline is: the third pipeline comprises a ninth pipeline 409, a tenth pipeline 410, an eleventh pipeline 411, a twelfth pipeline 412, a third water pump 7, a fourth water pump 10, a fifth water pump 13 and a third water source heat pump 16, the ninth pipeline 409 realizes the penetration of the water outlet end of the heat release side of the first water source heat pump 6 and the water inlet end of the second heating zone 12, the fourth water pump 10 is connected in series on the ninth pipeline 409, the tenth pipeline 410 realizes the penetration of the ninth pipeline 409 and the water inlet end of the first heating zone 9, the joint of the ninth pipeline 409 and the tenth pipeline 410 is positioned at the upstream of the fourth water pump 10, the eleventh pipeline 411 realizes the penetration of the ninth pipeline 409 and the water inlet end of the third heating zone 15, the joint of the eleventh pipeline 411 and the ninth pipeline 409 is positioned at the downstream of the fourth water pump 10, the fifth water pump 13 is connected in series on the eleventh pipeline 411, the twelfth pipeline 412 is used for realizing the penetration of the water outlet end of the third heating area 15 and the water inlet end of the heat release side of the first water source heat pump 6, the third water pump 7 is connected in series with the twelfth pipeline 412, the heat release side of the second water source heat pump 17 is used for realizing the circulating penetration of the pipeline section of the ninth pipeline 409 positioned at the upstream of the connection position of the ninth pipeline 409 and the tenth pipeline 410 through a fifth pipeline, the fifth pipeline comprises a thirteenth pipeline 413 and a fourteenth pipeline 414, the thirteenth pipeline 413 and the fourteenth pipeline 414 are respectively connected in series with a third electric valve 303 and a fourth electric valve 304, the ninth pipeline 409 is connected in series with a second electric valve 302, the second electric valve 302 is positioned at the downstream of the connection position of the ninth pipeline 409 and the thirteenth pipeline 413, and is positioned at the upstream of the connection position of the ninth pipeline 409 and the fourteenth pipeline 414, when the second electric valve 302 is closed, the third electric valve 303 and the fourth electric valve 304 are opened, the circulation connection between the ninth pipeline 409 and the heat release side of the second water source heat pump 17 is realized, the water outlet end of the first heating area 9 is connected with the eleventh pipeline 411 through a fifteenth pipeline 415, the water outlet end of the second heating area 12 is connected with the eleventh pipeline 411 through a sixteenth pipeline 416, the water inlet end and the water outlet end of the heat release side of the third water source heat pump 16 are respectively connected with the eleventh pipeline 411 through a seventeenth pipeline 417 and an eighteenth pipeline 418, a seventh electric valve 307 is connected in series on the pipe section of the eleventh pipeline 411 between the seventeenth pipeline 417 and the eighteenth pipeline 418, the heat absorption side of the third water source heat pump 16 is connected with the twelfth pipeline 412 through a nineteenth pipeline 419 and a twenty-first electric valve 308 in series on the pipe section of the twelfth pipeline 412 between the nineteenth pipeline 419 and the twenty-first pipeline 420, a sixth electric valve 306 is connected in series on the eleventh pipeline 411 in series on the connection position of the seventeenth pipeline 411 and the eleventh pipeline 411, a seventh electric valve 305 is connected on the water source pipeline 307 in series on the water source pipeline 307, and a seventh electric valve 305 is connected on the water source pipeline 305 in series when the heating is needed, and the heating valve is started up by the seventeenth pipeline 16.

Further, based on the above embodiment, the specific implementation manner of the fourth pipeline is: the fourth pipeline comprises a twenty-first pipeline 421, a twenty-second pipeline 422, a twenty-third pipeline 423, a twenty-fourth pipeline 424 and a sixth water pump 18, the twenty-first pipeline 421 and the twenty-second pipeline 422 realize the penetration of the heat release side of the second wide flow channel isolation plate heat exchanger 19 and the heat absorption side of the second water source heat pump 17, the sixth water pump 18 is arranged on the twenty-first pipeline 421, the twenty-third pipeline 423 realizes the penetration of the twenty-first pipeline 421 and the water outlet end of the second air fin tube heat exchanger 20, the joint of the twenty-first pipeline 421 and the twenty-third pipeline 423 is positioned at the upstream of the sixth water pump 18, the twenty-fourth pipeline 424 realizes the penetration of the twenty-second pipeline 422 and the water inlet end of the second air fin tube heat exchanger 20, a ninth electrically operated valve 309 located at the upstream of the connection of the twenty-first pipe 421 and the twenty-third pipe 423 is connected in series to the twenty-first pipe 421, an eleventh electrically operated valve 311 located at the downstream of the connection of the twenty-second pipe 422 and the twenty-fourth pipe 424 is connected in series to the twenty-third pipe 423 and the twenty-fourth pipe 424, a tenth electrically operated valve 310 and a twelfth electrically operated valve 312 are connected in series to the twenty-third pipe 423 and the twenty-fourth pipe 424, respectively, when the ninth electrically operated valve 309 and the tenth electrically operated valve 311 are opened, the second wide flow path isolation plate heat exchanger 19 is used as a heat source of the second water source heat pump 17, and when the ninth electrically operated valve 309 and the tenth electrically operated valve 311 are closed, and when the tenth electrically operated valve 310 and the twelfth electrically operated valve 312 are opened, the second air fin tube heat exchanger 20 is used as a heat source of the second water source heat pump 17.

In order to facilitate the efficient heat transfer between the first air-fin tube heat exchanger 25 and the second air-fin tube heat exchanger 20 in cold weather below zero, the heat exchange mediums in the second and fourth tubes are glycol coolant, and the second and fourth tubes are supplied with a supplemental supply of heat exchange medium by using one glycol coolant expansion tank 21, specifically, the glycol coolant expansion tank 21 is in communication with the twenty-second tube 422 through the twenty-fifth tube 425, and the glycol coolant expansion tank 21 is in communication with the sixth tube 406 through the twenty-sixth tube 426.

Further, in order to facilitate the monitoring of the operation conditions on the pipes, a first temperature sensor 101, a first pressure sensor 201 and a first electromagnetic flowmeter 3 are provided in a first pipe 401, a second temperature sensor 102 and a second pressure sensor 202 are provided in a water inlet end of a second pipe 402, a twentieth temperature sensor 120 and a twentieth pressure sensor 220 are provided in a water outlet end of the second pipe 402, an eighteenth temperature sensor 118 and an eighteenth pressure sensor 218 are provided in a third pipe 403, a nineteenth temperature sensor 119 and a nineteenth pressure sensor 219 are provided in a fourth pipe 404, a third temperature sensor 103 and a third pressure sensor 203 are provided in a fifth pipe 405, a fourth temperature sensor 104 and a fourth pressure sensor 204 are provided in a sixth pipe 406, a twenty-fifth temperature sensor 125 and a twenty-fifth pressure sensor 225 are provided in an eighth pipe 407, a twenty-fourth temperature sensor 124 and a twenty-fourth pressure sensor 224 are provided on the seventh pipe, a sixth temperature sensor 106 and a sixth pressure sensor 206 are provided on the ninth pipe 409 upstream of the junction of the ninth pipe 409 and the thirteenth pipe 413, a ninth temperature sensor 109 and a ninth pressure sensor 209 are provided on the ninth pipe 409 downstream of the junction of the ninth pipe 409 and the fourteenth pipe 414, a third electromagnetic flowmeter 11 is provided on the water outlet end of the ninth pipe 409, an eighth temperature sensor 108, an eighth pressure sensor 208 and a second electromagnetic flowmeter 8 are provided on the tenth pipe 410, an eleventh temperature sensor 111 and an eleventh pressure sensor 211 are provided on the eleventh pipe 411 at the junction of the eleventh pipe 411 and the seventeenth pipe 417, a twelfth temperature sensor 112 and a twelfth pressure sensor 212 which are positioned downstream of the fifth water pump 13 are arranged on the eleventh pipeline 411, a fourth electromagnetic flowmeter 14 is arranged at the water outlet end of the eleventh pipeline 411, a fifth temperature sensor 105 and a fifth pressure sensor 205 are arranged at the water outlet end of the twelfth pipeline 412, a twenty-third temperature sensor 123 and a twenty-third pressure sensor 223 are arranged at the water inlet end of the twelfth pipeline 412, a thirteenth temperature sensor 113 and a thirteenth pressure sensor 213 which are positioned downstream of the junction of the twenty-second pipeline 412 and the nineteenth pipeline 419 are arranged on the twelfth pipeline 412, a fourteenth temperature sensor 114 and a fourteenth pressure sensor 214 are arranged on the thirteenth pipeline 413, a fifteenth temperature sensor 115 and a fifteenth pressure sensor 215 are arranged on the fourteenth pipeline 414, a seventh temperature sensor 107 and a seventh pressure sensor 207 are arranged on the fifteenth pipeline 415, a twenty-third temperature sensor 110 and a twenty-third pressure sensor 223 are arranged on the twelfth pipeline 416, a twenty-third temperature sensor 113 and a twenty-third pressure sensor 217 are arranged on the twenty-second pipeline 412, a twenty-fifth temperature sensor 116 and a twenty-third pressure sensor 116 are arranged on the twenty-fifth pipeline 216 are arranged on the twenty-fifth pipeline 413, a twenty-fifth temperature sensor 116 and a twenty-third temperature sensor 116 and a twenty-fourth pressure sensor 117 are arranged on the twenty-fifth pipeline 117; a sixteenth level sensor 316 is provided on the glycol coolant expansion tank 21; when the third pipeline is subjected to heating circulation, in order to realize water supplementing of the third pipeline so as to effectively keep water balance, a third pipeline water supplementing pipeline is arranged, the water supplementing pipeline comprises a softened water treatment device 24, a water supplementing tank 23 and a water supplementing pump 22, the softened water treatment device 24 and the water supplementing tank 23 are connected through pipelines, an eighteenth electric valve 318 is arranged on the pipeline, a seventeenth liquid level sensor 317 is arranged on the water supplementing tank 23, the water supplementing tank 23 is communicated with the twelfth pipeline 412 through a twenty-seventh pipeline 427, and the water supplementing pump 22 is arranged on the twenty-seventh pipeline 427. The temperature sensor, the pressure sensor, the liquid level sensor and the electromagnetic flowmeter are electrically connected with the controller, and the water flow operation condition of the pipeline at the corresponding position can be realized by knowing the monitoring feedback data of the temperature sensor, the pressure sensor, the liquid level sensor and the electromagnetic flowmeter.

According to the heating period, the whole heating period can be generally divided into an early-stage and a final-stage cold stage of a heating season and an extremely cold stage of the heating season according to the temperature condition, and the system has the following operation principle in the early-stage and the final-stage cold stage of the heating season: this stage operates only three main heat source devices of the first water source heat pump 6, the first wide flow passage plate heat exchanger 4 and the first air fin tube heat exchanger 25.

Principle of operation on the medium water side (i.e., low quality heat source side): in order to prevent reclaimed water impurities from corroding and blocking water source heat pump equipment, a wide-flow-passage isolation plate type heat exchanger is added in front of the first water source heat pump 6 and the second water source heat pump 17. The first wide-flow-channel plate heat exchanger 4 and the second wide-flow-channel plate heat exchanger 19 and the internal circulation working media of the first water source heat pump 6 and the second water source heat pump 17 are glycol refrigerating media. The reclaimed water in the reservoir 1 is fed into the first wide-runner plate heat exchanger 4 through the first water pump 2 to perform primary heat exchange, the glycol secondary refrigerant after heat exchange is fed into the first water source heat pump 6 through the second water pump 5 to perform primary heat extraction, the temperature of the reclaimed water after heat exchange is reduced to 6.5 ℃ so as to meet the heating requirements of three heating areas, and the reclaimed water after heat extraction flows out of the first wide-runner plate heat exchanger 4 to be directly discharged. The first air fin tube heat exchanger 25 is used as a standby heat source, and when the heat of the heat source is insufficient due to the reduction of the medium water flow, the first air fin tube heat exchanger 25 is started to ensure the stability of district heating.

Heating side operation principle: because the heating tail ends of the first district and the second district are radiators, and the heating tail end of the third heating district is floor heating, the heating is performed by adopting a large-temperature-difference gradient cooling mode for better considering the requirements of the old district radiators and the new energy-saving building floor heating on different heating water supply temperatures. The return water at 42 ℃ in the heating return water main pipe is fed into the first water source heat pump 6 through the third water pump 7 for primary heating, the heated heating water can be heated to 49.5 ℃, then the third water pump 7 and the fourth water pump 10 respectively feed water into the first heating area 9 and the second heating area 12 for heating, the water temperature is reduced to 45.5 ℃ after heating, then the heating return water in the first heating area and the second heating area are converged and then fed into the third heating area 15 for heating through the fifth water pump 13, and the return water temperature after heating in the third heating area is reduced to 42 ℃ enters the heating return water main pipe for sequential circulation.

The system has the following operation principle in the middle extremely cold stage of heating season: seven main heat source devices of the first water source heat pump 6, the second water source heat pump 17, the third water source heat pump 16, the first wide-flow-path plate heat exchanger 4, the second wide-flow-path plate heat exchanger 19, the first air fin tube heat exchanger 25 and the second air fin tube heat exchanger 20 are operated at this stage.

Principle of operation on the medium water side (i.e., low quality heat source side): a wide-flow-passage isolation plate type heat exchanger is added in front of the first water source heat pump 6 and the second water source heat pump 17. The first wide-flow-channel plate heat exchanger 4 and the second wide-flow-channel plate heat exchanger 19 and the internal circulation working media of the first water source heat pump 6 and the second water source heat pump 17 are glycol refrigerating media. The reclaimed water in the reservoir 1 is fed into a first wide-runner plate heat exchanger 4 through a first water pump 2 to perform primary heat exchange, the glycol secondary refrigerant after heat exchange is fed into a first water source heat pump 6 through a second water pump 5 to perform primary heat extraction, and the temperature of the reclaimed water after heat extraction can be reduced to 6.5 ℃; and then the reclaimed water flowing out of the first wide-flow-channel plate heat exchanger 4 continuously enters the second wide-flow-channel plate heat exchanger 19 to carry out secondary heat exchange with the glycol secondary refrigerant, the glycol secondary refrigerant after heat exchange is fed to the second water source heat pump 17 by the sixth water pump 18 to carry out secondary heat extraction, and the reclaimed water temperature after heat extraction can be reduced to 1.5 ℃. At this time, the heat of the reclaimed water taken out can meet the heating requirements of three heating areas in extremely cold weather in middle and middle heating seasons, and the reclaimed water after the heat is taken out flows out of the second wide-runner plate heat exchanger 19 to be directly discharged. The first air fin tube heat exchanger and the second air fin tube heat exchanger are respectively used as standby heat sources of the first water source heat pump and the second water source heat pump, and when the heat of the intermediate water heat source is insufficient due to the fact that the intermediate water flow is reduced or the temperature is too low, the first air fin tube heat exchanger and the second air fin tube heat exchanger are started to ensure that district heating is stable.

Heating side operation principle: because the heating tail ends of the first heating area and the second heating area are radiators, and the heating tail end of the third heating area is floor heating, the heating is performed by adopting a large-temperature-difference gradient cooling mode for better considering the requirements of the old district radiators and the new energy-saving building floor heating on different heating water supply temperatures. The return water at 42 ℃ in the heating return water main pipe is supplied to the first water source heat pump 6 through the third water pump 7 for primary heating, the heated heating water can be heated to 48 ℃, then the heated heating water enters the second water source heat pump 17 for secondary heating, and the heating water can be heated to 56 ℃ at the moment, so that the heating requirement of extremely cold weather is met. The heating water at 56 ℃ is respectively supplied to the first heating area and the second heating area by the third water pump 7 and the fourth water pump 10 for heating, the water temperature is reduced to 48 ℃ after heating, then the heating backwater of the first heating area and the second heating area is converged and then is sent to the third heating area 15 for heating by the fifth water pump 13, and the backwater temperature is reduced to 42 ℃ after heating in the third heating area 15 and then enters the heating backwater main pipe for circulation in sequence. The third water source heat pump 16 is emergency heat source equipment of the third heating area, when the temperature of heating and water supply of the third heating area 15 is lower than 48 ℃, the third water source heat pump 16 is automatically started, and heat is extracted from backwater of the third heating area 15 to raise the temperature of the water supply of the third heating area 15.

The utility model also provides an operation control method of the heating system, comprising the heating system described in the above embodiment, wherein the operation control method comprises the following steps:

before the system operates, the operator needs to check that each of the electric valve, the temperature sensor, the pressure sensor, the heat pump and the water pump meet the use requirements, and simultaneously, the fifth manual valve 305 and the sixth manual valve 306 are opened to be in a normally open state.

S1, starting a controller by a worker;

s2, enabling a worker to enter a middle-stage extremely cold weather operation mode or a weather operation mode of a heating season according to a heating period;

s2.1 when the controller enters into the cold weather operation mode at the beginning and end of the heating season, the controller opens the fifteenth electric valve 315, the second electric valve 302, the seventh electric valve 307 and the eighth electric valve 308, closes the thirteenth electric valve 313, the fourteenth electric valve 314, the third electric valve 303 and the fourth electric valve 304, and then starts the operation of the first water pump 2, the third water pump 7, the fourth water pump 10 and the fifth water pump 13, at this time, continuous transportation of the sewage discharge heat source and initial cold circulation of the heating water in the third pipeline are realized, after the first water pump 2, the third water pump 7, the fourth water pump 10 and the fifth water pump 13 are operated, the staff sets the upper liquid level threshold H1 and the lower liquid level threshold H2 of the reservoir 1, wherein H1 > H2, the function of setting H1 is to ensure that effective water supply can be carried out when the water level of the reservoir 1 is on H1, the function of setting H2 is to set a lowest limit, when the H1 monitoring signal fails and the H2 monitoring signal is acted, the continuous supply of water in the reservoir 1 is stopped to ensure that no-load operation phenomenon of the first water pump 2 occurs, the water temperature threshold T1 of the second pipeline 402 is set, the water temperature threshold T2 of the ninth pipeline 409 is set, after the parameters are set, the controller compares the liquid level value H3 monitored by the first liquid level sensor 301 with H1 in real time, compares the temperature value T3 monitored by the second temperature sensor 102 with T1 in real time, and compares the monitored temperature value T4 of the sixth temperature sensor 106 with T2 in real time; when H3 is smaller than H1 or T3 is smaller than T1, at the moment, the water level of the impounding reservoir 1 is not suitable for continuous water supply or the water outlet temperature of the first wide-flow-channel isolation plate heat exchanger 4 is too low, continuous heat supply is inconvenient to use of sewage in the impounding reservoir 1, the controller closes the first water pump 2, so that the nineteenth electric valve 319 and the twenty-first electric valve 320 are in a closed state, meanwhile, the twenty-first electric valve 321 and the twenty-second electric valve 322 are opened, then the first air fin tubular heat exchanger 25 is used as a heat source, when H3 is larger than or equal to H1 and T3 is larger than or equal to T1, the controller opens the nineteenth electric valve 319 and the twenty-second electric valve 320, and simultaneously, the twenty-first electric valve 321 and the twenty-second electric valve 322 are in a closed state, so that the impounding reservoir 1 is used as a heat source, when T4 is larger than or equal to T2, the controller enables the second water pump 2 and the first water source 6 to be in a closed state, and the water source 6 is not required to be heated, when T4 is larger than T2, the water source 6 is not required to be heated, and the water source 6 is not to be heated, and the water source is required to be heated, and the water source 6 is heated, and the water source is heated; in the cold weather operation mode at the beginning and end of the heating season, because the external environment temperature is not very low, the heating requirement can be met by adopting the heating of the first water source heat pump 6 in the normal heating process, and the auxiliary heating by using the second water source heat pump 17 and the third water source heat pump 16 is not needed.

S2.2 when the controller enters an extremely cold weather operation mode in the middle period of a heating season, the controller closes a fifteenth electric valve 315 and a second electric valve 302, opens a thirteenth electric valve 313, a fourteenth electric valve 314, a third electric valve 303, a fourth electric valve 304, a seventh electric valve 307 and an eighth electric valve 308, then starts to operate the first water pump 2, the third water pump 7, the fourth water pump 0 and the fifth water pump 13, at the moment, realizes the sequential flow of sewage discharge water in the reservoir 1 in the first wide-flow-channel isolation plate heat exchanger 4 and the second wide-flow-channel isolation plate heat exchanger 19, simultaneously realizes the cold circulation of heating water between a heating area and the first water source heat pump 6 and the second water source heat pump 17, and a worker sets an upper liquid level threshold H5 and a lower liquid level threshold H6 of the reservoir 1, wherein H5 is more than H6, the effect of setting H5 is that effective water supply can be performed when the water level of the reservoir 1 is ensured on the H5, the effect of setting H6 is that a minimum limit is set, when a monitoring signal of H5 is invalid, and the monitoring signal stops the water level of the reservoir 1 is not continuously supplied when no-load water pump 2 is not ensured after the monitoring signal is stopped; setting a fourth pipe 404 water temperature threshold T5, setting a ninth pipe 409 water temperature threshold T6, setting an eleventh pipe 411 water temperature threshold T7, after setting the above parameters, the controller compares the liquid level value H7 monitored by the first liquid level sensor 301 with H5 in real time, compares the temperature value T8 monitored by the nineteenth temperature sensor 119 with T5 in real time, compares the monitored temperature value T9 of the sixth temperature sensor 106 with T6 in real time, compares the monitored temperature value T10 of the twelfth temperature sensor 112 with T7 in real time, when H7 is less than H5 when H7 is compared with H5 and T8 is compared with T5, at this time, the water level in the reservoir 1 is low, which is inconvenient to use the water therein as a low quality heat source for heating, the controller stops the operation of the first water pump 2, opens the twenty-first electric valve 321, the twenty-second electric valve 322, the tenth electric valve 310 and the twelfth electric valve 312, then closes the nineteenth electric valve 319, the twentieth electric valve 320, the ninth electric valve 309 and the eleventh electric valve 311, starts the second water pump 5 and the first heat source water pump 6, and at the moment, the first air fin tube heat exchanger 25 and the second air fin tube heat exchanger 20 serve as heat sources, when H7 is more than or equal to H5, and at the moment, the water level in the reservoir 1 meets the water supply requirement, the controller opens the nineteenth electric valve 319, the twentieth electric valve 320, the second water pump 5 and the first heat source water pump 6, and closes the twenty-first electric valve 321 and the twenty-second electric valve 322; on the basis that H7 is more than or equal to H5, when T8 is less than T5, the controller closes the ninth electric valve 309 and the eleventh electric valve 311, and opens the tenth electric valve 310 and the twelfth electric valve 312, and at the moment, the reservoir 1 and the second air fin tube heat exchanger 20 are used as heat sources; on the basis that H7 is more than or equal to H5, when T8 is more than or equal to T5, the controller opens the ninth electrically operated valve 309 and the eleventh electrically operated valve 311, and closes the tenth electrically operated valve 310 and the twelfth electrically operated valve 312; at this time, the reservoir 1 serves as a heat source; when comparing T9 with T6, when T9 is more than or equal to T6, the sixth water pump 18 and the second water source heat pump 17 are in a closed state, at the moment, the independent heating of the first heat source water pump 6 is indicated, the heat supply requirement can be met, when T9 is less than T6, the sixth water pump 18 and the second water source heat pump 17 are in a starting state, at the moment, the heating capacity of the first water source heat pump 6 can not meet the heat supply requirement, and the heat supply requirement can be met by adding the second water source heat pump 17; when comparing T10 with T7, when T10 is more than or equal to T7, the third water source heat pump 16 is in a closed state, at this time, the water supply temperature of the third heating area is according with the heating temperature requirement, the third water source heat pump 16 is not needed for heating, when T10 is less than T7, the seventh electric valve 307 and the eighth electric valve 308 are closed, then the third water source heat pump 16 is opened, at this time, the water supply temperature of the third heating area is not according with the heating temperature requirement, and the third water source heat pump 16 is needed for heating.

Other than the technical features described in the specification, all are known to those skilled in the art.

While the preferred embodiments and examples of the present utility model have been described in detail with reference to the accompanying drawings, the present utility model is not limited to the embodiments and examples, and it will be apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit of the present utility model, and the scope of the utility model is also defined by the appended claims.

Claims (7)

1. The utility model provides a heating system, includes cistern, first water source heat pump, first heating district, second heating district, third heating district, second water source heat pump, controller, characterized by, this heating system still includes first wide runner isolation plate heat exchanger, first air fin tubular heat exchanger, second wide runner isolation plate heat exchanger, second air fin tubular heat exchanger be provided with first pipeline between cistern, first wide runner isolation plate heat exchanger and the second wide runner isolation plate heat exchanger, first pipeline is used for realizing that first wide runner isolation plate heat exchanger supplies water alone or first wide runner isolation plate heat exchanger and second wide runner isolation plate heat exchanger's water supply in proper order first wide runner isolation plate heat exchanger, first air fin tubular heat exchanger and first water source heat pump are provided with the second pipeline that is used for the heat exchange medium circulation be provided with the third pipeline between first water source heat pump, second water source heat pump, first heating district, second heating district and the third heating district, the third pipeline is used for realizing that heating water and first wide runner isolation plate heat exchanger and second water source heat pump pipeline, second heat pump pipeline, fourth water source heat pump pipeline, fourth heat pump pipeline, control heat pump pipeline are used for realizing that the heat exchange medium circulates.

2. A heating system according to claim 1, wherein the first pipeline comprises a first water pump, a first pipeline, a second pipeline, a third pipeline and a fourth pipeline, the first pipeline is used for realizing the penetration of the water reservoir and the water inlet port of the heat absorption side of the first wide-channel isolation plate heat exchanger, the first water pump is connected in series with the first pipeline, the second pipeline is used for realizing the penetration of the water outlet port of the heat absorption side of the first wide-channel isolation plate heat exchanger and the outside, the third pipeline and the fourth pipeline are used for realizing the penetration of the heat absorption side of the second wide-channel isolation plate heat exchanger and the second pipeline, a thirteenth electric valve and a fourteenth electric valve are respectively connected in series with the third pipeline and the fourth pipeline, and a fifteenth electric valve is arranged on the second pipeline and is positioned at the downstream of the junction of the second pipeline and the third pipeline and at the upstream of the junction of the second pipeline and the fourth pipeline.

3. A heating system according to claim 2, wherein the second pipeline comprises a fifth pipeline, a sixth pipeline, a seventh pipeline, an eighth pipeline and a second water pump, the fifth pipeline and the sixth pipeline realize the connection of the heat release side of the first wide-flow-passage isolation plate type heat exchanger and the heat absorption side of the first water source heat pump, the second water pump is arranged on the fifth pipeline, the seventh pipeline realizes the connection of the fifth pipeline and the water outlet end of the first air fin type heat exchanger, the connection of the seventh pipeline and the fifth pipeline is positioned at the upstream of the second water pump, the eighth pipeline realizes the connection of the sixth pipeline and the water inlet end of the first air fin type heat exchanger, a nineteenth electric valve positioned at the upstream of the connection of the fifth pipeline and the seventh pipeline is connected in series on the fifth pipeline, a twenty-second electric valve positioned at the downstream of the connection of the sixth pipeline and the eighth pipeline is connected in series on the seventh pipeline, and the twenty-second electric valve is connected in series on the fifth pipeline and the twenty-second electric valve respectively.

4. A heating system according to claim 3, wherein the third pipeline comprises a ninth pipeline, a tenth pipeline, an eleventh pipeline, a twelfth pipeline, a third water pump, a fourth water pump, a fifth water pump and a third water source heat pump, the ninth pipeline is used for realizing the penetration of the water outlet end of the heat release side of the first water source heat pump and the water inlet end of the second heating zone, the fourth water pump is connected on the ninth pipeline in series, the tenth pipeline is used for realizing the penetration of the ninth pipeline and the water inlet end of the first heating zone, the joint of the ninth pipeline and the tenth pipeline is positioned on the upstream of the fourth water pump, the eleventh pipeline is used for realizing the penetration of the ninth pipeline and the water inlet end of the third heating zone, the joint of the eleventh pipeline and the ninth pipeline is positioned on the downstream of the fourth water pump, the fifth water pump is connected on the eleventh pipeline in series, the twelfth pipeline realizes the penetration of the water outlet end of the third heating area and the water inlet end of the heat release side of the first water source heat pump, the third water pump is connected in series on the twelfth pipeline, the heat release side of the second water source heat pump is connected in series with the circulation penetration of the pipe section of the ninth pipeline positioned at the upstream of the joint of the ninth pipeline and the tenth pipeline through a fifth pipeline, the fifth pipeline comprises a thirteenth pipeline and a fourteenth pipeline, the thirteenth pipeline and the fourteenth pipeline are respectively connected in series with a third electric valve and a fourth electric valve, the ninth pipeline is connected in series with a second electric valve, the second electric valve is positioned at the downstream of the joint of the ninth pipeline and the thirteenth pipeline and at the upstream of the joint of the ninth pipeline, the water outlet end of the first heating area is connected in series with the eleventh pipeline through a fifteenth pipeline, the water outlet end of the second heating area is communicated with the eleventh pipeline through a sixteenth pipeline, the water inlet end and the water outlet end of the heat release side of the third water source heat pump are respectively communicated with the eleventh pipeline through a seventeenth pipeline and an eighteenth pipeline, a seventh electric valve is connected in series on the pipeline section of the eleventh pipeline between the seventeenth pipeline and the eighteenth pipeline, the heat release side of the third water source heat pump is communicated with the twelfth pipeline through a nineteenth pipeline and a twentieth pipeline, an eighth electric valve is connected in series on the pipeline section of the twelfth pipeline between the nineteenth pipeline and the twentieth pipeline, a sixth manual valve is connected in series on the eleventh pipeline and is positioned at the upstream of the joint of the seventeenth pipeline and the eleventh pipeline, and a fifth manual valve is connected in series on the eleventh pipeline and is positioned at the upstream of the joint of the sixteenth pipeline and the eleventh pipeline.

5. A heating system according to claim 4, wherein the fourth pipeline comprises a twenty-first pipeline, a twenty-second pipeline, a twenty-third pipeline, a twenty-fourth pipeline and a sixth water pump, the twenty-first pipeline and the twenty-second pipeline realize the penetration of the heat release side of the second wide flow passage isolation plate type heat exchanger and the heat absorption side of the second water source heat pump, the sixth water pump is arranged on the twenty-first pipeline, the twenty-third pipeline realizes the penetration of the twenty-first pipeline and the water outlet end of the second air fin type heat exchanger, the connection of the twenty-first pipeline and the twenty-third pipeline is positioned at the upstream of the sixth water pump, the twenty-fourth pipeline realizes the penetration of the twenty-second pipeline and the water inlet end of the second air fin type heat exchanger, a ninth electric valve positioned at the upstream of the connection of the twenty-first pipeline and the twenty-third pipeline is connected on the twenty-first pipeline in series, a ninth electric valve positioned at the connection of the twenty-first pipeline and the twenty-third pipeline is connected at the downstream of the electric valve in series on the twenty-second pipeline and the twenty-fourth pipeline respectively.

6. A heating system as set forth in claim 5 further comprising a glycol coolant expansion tank for providing glycol coolant to the second and fourth lines.

7. A heating system according to claim 6, wherein a first level sensor is provided in the reservoir, a second temperature sensor is provided in the second conduit, a sixth temperature sensor is provided in the ninth conduit, a nineteenth temperature sensor is provided in the fourth conduit, and a twelfth temperature sensor is provided in the eleventh conduit downstream of the fifth water pump.