CN216431887U

CN216431887U - Cross-season heat heating system

Info

Publication number: CN216431887U
Application number: CN202121565330.7U
Authority: CN
Inventors: 郎宇帆
Original assignee: Beijing Huanyu Jiancheng Technology Co ltd
Current assignee: Beijing Huanyu Jiancheng Technology Co ltd
Priority date: 2021-07-09
Filing date: 2021-07-09
Publication date: 2022-05-03
Anticipated expiration: 2031-07-09

Abstract

The utility model relates to a stride season thermal heating system, include solar collector buffer tank, first heating circulating pump, second heating circulating pump, heat-retaining circulating pump, first temperature detection device, second temperature detection device, third temperature detection device, stride season and store up hot water pool and master control set. The system collects solar energy in non-heating seasons, stores the energy in the ground bottom, takes out the energy in winter, is used for providing energy required by winter heating of buildings, adopts an auxiliary heating device as certain assistance and supplement, solves the problem of winter heating of distributed residential buildings or other types of buildings in a cross-season heat storage mode, has higher energy guarantee rate of system heating, stronger operation continuity and more excellent performance, and can effectively avoid the operation risk of system performance reduction or poorer continuity caused by lower solar irradiance in winter.

Description

Cross-season heat heating system

Technical Field

The application relates to the technical field of solar functions, in particular to a cross-season thermal heating system.

Background

Solar energy is an inexhaustible renewable energy source, and at present, fossil fuels are reduced year by year, and international energy source situation is severe day by day, the development and utilization of solar energy is one of important ways for realizing diversification of energy supply and ensuring energy safety. Solar heating is one of effective ways for reducing the heating coal consumption of buildings in northern China.

However, the existing solar heating system mainly has low energy utilization rate and long idle time for a seasonal heating system, namely, the energy used for living heating is provided for users only in a heating season, and the long-time idle condition occurs in a non-heating season, so that great resource waste exists, meanwhile, the users still need to shade sunlight when the system is idle, and related work such as water supplement is carried out to avoid the system from being damaged due to overheating, and meanwhile, the economic benefit of the whole system is low. In addition, the system performance is easily affected by the environment, the performance and the efficiency of the system are relatively low due to the low solar energy irradiation amount in the heating season, the parameter indexes of the system are difficult to achieve the expected targets, and the energy guarantee rate provided by the whole system during heating output is low. There is therefore a need for improvements to existing solar heating systems.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems mentioned in the background art or at least partially solve the technical problems, the application provides a cross-season thermal heating system capable of improving energy utilization rate and operation continuity.

The application provides a cross-season thermal heating system, including: the system comprises a solar heat collector buffer water tank, a first heating circulating pump, a second heating circulating pump, a heat storage circulating pump, a first temperature detection device, a second temperature detection device, a third temperature detection device, a cross-season heat storage water pool and a main control device;

one end of the solar thermal collector buffer water tank is connected with a first flow port of a first three-way valve, a second flow port of the first three-way valve is communicated with one end of a first heating circulating pump, the other end of the first heating circulating pump is connected with a first flow port of a second three-way valve, a second flow port of the second three-way valve is connected with the other end of the solar thermal collector buffer water tank, a third flow port of the second three-way valve is communicated with the season-crossing heat storage water tank through a pipeline, a third flow port of the first three-way valve is communicated with a first flow port of a third three-way valve, a second flow port of the third three-way valve is communicated with one end of a heat storage circulating pump, a third flow port of the third three-way valve is communicated with one end of a second heating circulating pump, the other end of the heat storage circulating pump is connected with a first flow port of a fourth three-way valve, and a second flow port of the fourth three-way valve is communicated with the season-crossing heat storage water tank through a pipeline, a third flow passage opening of the fourth three-way valve is connected to the other end of the second heating circulating pump, and the heat storage circulating pump and the second heating circulating pump are arranged in parallel and flow directions are opposite; the first temperature detection device is arranged in the solar heat collector buffer water tank, the second temperature detection device is arranged at a first flow passage of the second three-way valve, and the third temperature detection device is arranged in the cross-season hot water storage pool; the cross-season heat storage water tank is connected with heating end equipment through a pipeline and used for supplying heat to the heating end equipment, the heating end equipment is further connected with an auxiliary heating device and a fourth temperature detection device, and the first heating circulating pump, the second heating circulating pump, the heat storage circulating pump, the first temperature detection device, the second temperature detection device, the third temperature detection device, the fourth temperature detection device and the auxiliary heating device are all connected to the main control device.

Preferably, the cross-season hot water storage pool is an inverted trapezoidal pool which is half buried underground, waterproof heat preservation layers are paved on the side wall and the bottom of the cross-season hot water storage pool, and a waterproof heat preservation cover is arranged at the top of the cross-season hot water storage pool.

Preferably, the waterproof heat-insulating layer comprises a polyethylene foam heat-insulating plate, and a first waterproof film is laid on the polyethylene foam heat-insulating plate.

Preferably, the first waterproof membrane is a polyethylene geomembrane.

Preferably, the waterproof heat-preservation cover comprises a cover plate, a heat-preservation layer is arranged below the cover plate, and a combined waterproof layer is arranged below the heat-preservation layer.

Preferably, the cover plate is made of a cross-linked polyethylene material.

Preferably, the included angle between the side wall and the bottom edge of the seasonal heat storage water tank is 135 degrees.

Preferably, the auxiliary heating device comprises an auxiliary electric heating rod, and the auxiliary electric heating rod is installed on the heating terminal equipment and is connected to the main control device through a control panel.

Preferably, the auxiliary electric heating rod comprises an outer sleeve head, the outer sleeve head is connected with a sleeve and a resistance heating strip, a probe signal line is arranged in the sleeve, and the tail end of the probe signal line is connected with a probe.

Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages: the system collects solar energy in non-heating seasons (mainly spring, summer and autumn), stores the energy in the ground, takes out the energy in winter, is used for providing energy required by heating of buildings in winter, adopts an auxiliary heating device as certain assistance and supplement, solves the problem of heating of distributed residential buildings or other types of buildings in winter in a cross-season heat storage mode, has higher energy guarantee rate of total heating, stronger operation continuity and more excellent performance, and can effectively avoid the operation risk of system performance reduction or poorer continuity caused by lower solar irradiance in winter.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of a cross-season thermal heating system according to an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a cross-season heat storage water pool;

FIG. 3 is a schematic view of the top and side walls of the seasonal heat storage basin;

FIG. 4 is a schematic structural view of an auxiliary electric heating rod;

FIG. 5 is a schematic view of the installation of the auxiliary electric heating rod;

FIG. 6 is a schematic process flow diagram of the system in heat storage mode;

FIG. 7 is a schematic diagram of the process flow of the system in the pool heating mode;

FIG. 8 is a schematic view of the process flow of the system in collector heating mode.

Icon:

1. a buffer water tank of the solar heat collector; 2. a first heating circulation pump; 3. a second heating circulating pump; 4. a heat storage circulating pump; 5. a first temperature detection device; 6. a second temperature detection device; 7. A third temperature detection device; 8. a cross-season hot water storage pool; 9. an outer sleeve head; 10. a sleeve; 11. A resistance heating strip; 12. a probe signal line; 13. a probe; 14. an auxiliary electrical heating rod; 15. A master control device.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

For convenience of understanding, the following detailed description of a cross-season thermal heating system provided in an embodiment of the present application is provided, and referring to fig. 1, the cross-season thermal heating system includes: the system comprises a solar heat collector buffer water tank 1, a first heating circulating pump 2, a second heating circulating pump 3, a heat storage circulating pump 4, a first temperature detection device 5, a second temperature detection device 6, a third temperature detection device 7, a season-crossing heat storage water pool 8 and a main control device 15;

In some embodiments of the present application, the solar thermal collector is used as a thermal collecting part of the system, and the plurality of solar vacuum tube thermal collectors or flat plate thermal collectors can form a solar thermal collecting field, which is mainly used for collecting and outputting solar energy. The solar heat collector is communicated with the buffer water tank through a pipeline.

In some embodiments of the present application, the buffer water tank and the seasonal heat storage water tank form a heat storage portion of the system, which is mainly used for storing energy collected by the heat collection portion, and the heat storage medium is a water medium and is stored in a heat energy form; the buffer water tank is mainly used for short-term (seasonal) heat energy storage, and the hot water storage pool is used for long-term (cross-seasonal) heat storage.

As an example, the buffer water tank is a square or round water tank with a heat preservation steel structure, the volume of the water tank is generally 500L-1000L, the interior of the water tank is provided with a heat preservation layer formed by rock wool or other similar heat preservation materials, and the outer surface of the water tank is provided with a protective layer formed by stainless steel.

In some embodiments of the present application, the seasonal heat storage pool is an inverted trapezoid pool half-buried under the ground, a waterproof insulating layer is laid on the side wall and the bottom of the seasonal heat storage pool, and a waterproof insulating cover is arranged on the top of the seasonal heat storage pool.

In some embodiments of the present application, the waterproof insulation layer includes a polyethylene foam insulation board, and a first waterproof film is laid on the polyethylene foam insulation board.

In some embodiments of the present application, the first waterproofing membrane is a polyethylene geomembrane.

In some embodiments of the present application, the waterproof and heat-insulating cover includes a cover plate, a heat-insulating layer is disposed below the cover plate, and a combined waterproof layer is disposed below the heat-insulating layer.

In some embodiments of the present application, the cover sheet is a cover sheet made of a cross-linked polyethylene material.

In some embodiments of the present application, the angle between the sidewall and the bottom of the seasonal heat storage pool is 135 °.

In some embodiments of the present application, the cross-season hot water storage pool is different from the buffer water tank, and mainly functions to store energy for a long time, and is used as a main energy output end for heating in winter, and the volume of the cross-season hot water storage pool is large, so the cross-season hot water storage pool is generally placed underground or semi-underground, the structure of the cross-season hot water storage pool is shown in fig. 2, the pool is an inverted trapezoidal pool, one half of which is located underground, the other half of which is located on the ground, and the overlooking is square, and the main reason for adopting the inverted trapezoidal pool structure is to disperse the pressure borne by the bottom of the pool. The specific volume of the pool can be determined according to the actual project requirements; according to the mechanics principle, the included angle between the side wall and the bottom edge of the water pool is preferably 135 degrees, and meanwhile, in order to ensure the economy, the soil dug out of the heat storage water pool is constructed into a bank existing in the water pool and is enclosed around the water pool, so that the sand and soil treatment cost is reduced; thus, the actual total height (H) of the pool is the pool bank height (H1) plus the pool depth (H2) of the pool, which is present in the relationship H2-2H 1, and the total volume of the pool is then calculated as V1/3 (H1+ H2) (S1+ S2+ √ S1S2), where S1 and S2 represent the pool floor area and roof area, respectively; polyethylene foam insulation boards are paved on the four walls and the bottom of the water tank to serve as insulation layers, the insulation layers are paved on the side walls and the bottom of the water tank and fixed by wire racks, the insulation thickness is 10cm, the heat conductivity coefficient of the insulation layers is 0.038W/m/K, meanwhile, under the action of long-term high temperature, the water content of the soil around the water tank is gradually reduced, and then a natural insulation layer is formed, and the heat conductivity coefficient of the natural insulation layer is about 0.2-0.5W/m/K; theoretical calculation shows that when the water temperature in the water tank is 90 ℃, the outside temperature of the heat-insulation board is 30-40 ℃; the stored heat loss does not exceed 15 percent through conversion; a waterproof film with the thickness of 2.5mm is laid on the inner side of the heat-insulation board, the waterproof film material is a high-density polyethylene geomembrane (HDPE), and the density of the waterproof film material is 0.94g/m 3; the waterproof membrane has better water vapor permeation resistance, and the water vapor permeation rate at 80 ℃ is about 1.8g/m 2/day; and connecting the geomembranes at the joint of the two parts of the geomembrane by using a double welding mode to prevent high-temperature deformation of the edge line of the geomembrane and prevent water leakage at the joint, wherein the maximum service temperature of the geomembrane is 135 ℃ which is higher than the highest possible water temperature of the hot water storage pool.

The top of the water tank is provided with 4 layers of covering materials to form a heat-preservation cover, wherein a 2.5mm high-density polyethylene geomembrane (HDPE) and a 2.0mm high-density polyethylene geomembrane (HDPE) are combined waterproof layers which directly float on water and mainly contain vapor permeation, a polyethylene foaming heat-preservation plate is laid on the upper part of each waterproof layer to form a heat-preservation layer, the thickness of the heat-preservation material is 15cm, the upward heat dissipation of the water tank is prevented, and the outermost layer is provided with a cover plate made of a cross-linked polyethylene material (PEX) and mainly plays a role in protection; referring to fig. 3, the raised embankment can form a natural heat-insulating layer to prevent heat loss of the part above the ground of the seasonal heat storage water pool, the water pool stores hot water, the top cover plate covers the opening of the water pool, the top heat-insulating layer is arranged on the cover plate, the combined waterproof layer is arranged at one end of the cover plate, which is in contact with water in the water pool, and comprises a bottom waterproof layer (adopting a polyethylene geomembrane with the thickness of 2.5 mm) and an interlayer waterproof layer (adopting a polyethylene geomembrane with the thickness of 2.0 mm), the side wall of the water pool is provided with a side wall waterproof layer and a side wall heat-insulating layer, and a plurality of connection fixing points (such as connection fixing point 1, connection fixing point 2, connection fixing point 3 and the like shown in fig. 3) can be arranged between the cover plate and the side wall of the water pool, so that the cover plate can form a good sealing effect to prevent heat loss and water evaporation, The entry of external rain dust, etc.

Besides the structure, the seasonal heat storage water pool can also be constructed in a whole concrete structure or a stainless steel water tank in a mode of being completely buried in the ground, the thermal performance effect of the water pool is superior to that of the water pool with the structure, but the cost is relatively high.

Because the water in the water tank needs to be stored for a long time, namely in a state of high temperature and slow flow, the used working medium water is soft water, and the content of soluble calcium and magnesium ions in the water working medium is reduced by periodically adding calcium hydroxide and sodium carbonate in consideration of the service life problem of the water storage and delivery tank and the water delivery pipeline; the phenomenon that blockage or water flow is not smooth due to accumulation of precipitates in a pipeline is avoided or reduced, and meanwhile, the pH value of water is controlled to be 7.5-8.0, so that the corrosion effect caused by oxygen ions in the water is avoided.

In some embodiments of the present application, the auxiliary heating device includes an auxiliary electric heating rod installed on the heating terminal device and connected to the main control device through a control panel.

In some embodiments of the present application, the auxiliary electric heating rod 14 includes an outer sleeve 9 connected to a sleeve 10 and a resistance heating strip 11, the sleeve is provided with a probe signal line 12, and the end of the probe signal line is connected to a probe 13.

In some embodiments of the present application, the auxiliary heating device is mainly an auxiliary energy device and its attached monitoring component, and is mainly used for energy supplement, and most of the energy supplement occurs when there is a gap in the solar energy supply; the auxiliary device can adopt various forms of energy, wherein it is most suitable to regard as auxiliary energy with supplementary electric heating rod (electric energy), supplementary electric heating rod can directly install on heating end equipment (promptly heating heat load end, for example radiator), supplementary electric heating rod structure refers to figure 4, its mounting means refers to figure 5, supplementary electric heating rod's overcoat head port has the mounting thread, can directly install in radiator port department, its probe inserts in the radiator with the sheathed tube form, there is certain distance (500-800mm, according to radiator specification) at the edge of radiator in order to guarantee that the detection temperature error is less, supplementary electric heating rod during operation, through the heating circulating water in the resistance heating mode heating radiator.

The auxiliary electric heating rod is provided with a control panel assembly, and can display the running state of the electric heating rod and the detected data such as the water temperature in the heater and the like; the control panel can be connected with the main control device and controlled by the main control device; in actual operation, the main control device controls the start and stop of the auxiliary electric heating rod; when the auxiliary electric heating rod is started, the auxiliary electric heating rod operates in a cycle of 30-40 ℃, namely, when the detected water temperature is lower than 30 ℃, the auxiliary electric heating rod starts to heat, and when the water temperature is heated to 40 ℃, the auxiliary electric heating rod stops; because the electric heating and the heating circulating pump cannot run simultaneously, when the auxiliary electric heating rod runs, water in the heating radiator is in a static state; the energy consumed by the auxiliary electric heating rod is transmitted to the indoor through the heating radiator to provide energy for heating.

The control part of the system comprises a main control device, a temperature detection device, a heating circulating pump, a heat storage circulating pump and other control and execution parts, and the control part is mainly used for controlling the system to run in different modes under different conditions according to preset logics and perceiving possible running risks and the like of the system through monitoring system running parameters. The system is provided with 7 temperature detectors (hereinafter referred to as "thermometers") which can be armored thermocouples, wherein 5 thermometers are vertically distributed in the cross-season hot water storage pool, namely the third temperature detection device is sequentially marked as a thermometer A, a thermometer B, a thermometer C, a thermometer D and a thermometer E from the bottom of the pool upwards, a solar heat collector buffer water tank is provided with one thermometer, namely a first temperature detection device, and finally a thermometer, namely a second temperature detection device, is arranged at a house water return pipeline, and the thermometers are mainly used for monitoring the cross-season hot water storage pool, and the buffer water tank is used for feeding back the temperature of house heating return water to a main control device so as to perform corresponding control.

4 three-way electromagnetic valves are arranged in the system, wherein the electromagnetic valves connected with a heat storage circulating pump and a heating circulating pump near the heat storage water pool are a first group of electromagnetic valves which are respectively marked as a fourth three-way valve 16 and a third three-way valve 17; the electromagnetic valves arranged near the buffer water tank of the solar heat collector are a second group of electromagnetic valves, namely the second three-way valve 18) and a first three-way valve 19;

under normal conditions, the system mainly operates in three modes, namely a heat storage mode, a heat storage water pool heating mode and a heat collector heating mode, and the operation flows and control logics of the three modes are described below;

a heat storage mode:

the heat storage mode mainly operates in non-heating seasons, in the mode, all energy collected by the solar thermal collector is input into the cross-season heat storage water pool for storage, the whole system is in an energy storage state, the process flow is shown in fig. 6 (the dotted line indicates that the pipeline is in a disconnected state), and the control mode is as follows;

the fourth three-way valve and the third three-way valve disconnect the second heating circulating pump part, the pipeline of the heat storage circulating pump part is opened, the three-way valve C and the three-way valve D disconnect the indoor part, and the heat collector and the pipeline of the heat storage water tank are connected; the control system monitors the temperature of thermometers (thermometer A, thermometer B, thermometer C, thermometer D, thermometer E and thermometer F), when the thermometer monitors that the temperature of thermometer A is lower than that of thermometer F, the control system controls the heat storage circulating pump to be started to carry out heat storage circulation, and hot water in the heat collector buffer water tank is transmitted to the cross-season heat storage water tank; when the temperature of the thermometer A is higher than that of the thermometer F, the operation of the heat storage circulating pump is stopped, so that the heat collector is in a standing and heating state until the former state is returned; in the mode, if the control system monitors that the temperature of any thermometer of the hot water storage pool is higher than 95 ℃, an overheat warning is activated, the heat storage circulating pump is controlled to stop running, the three-way valve C and the three-way valve D disconnect partial connecting pipelines of the hot water storage pool, the heat collector buffer water tank is connected with a heating pipeline of a house, a thermometer F in the buffer water tank is monitored, if the water temperature of the thermometer F exceeds 90 ℃, the first heating circulating pump is started, and the energy in the buffer water tank is dumped indoors until the water temperature is reduced to be lower than 85 ℃; when the temperature of the water fed back by the thermometer in the hot water storage pool is lower than 90 ℃, the overheating warning state is contacted, and the system recovers the state of running in the heat storage mode.

A pool heating mode:

the pool heating mode is only operated in a heating season, in the mode, the solar thermal collector is in a standing heating energy storage state, all collected energy is stored in the buffer water tank in a short time, the hot water storage pool outputs hot water to supply energy required by heating to a house, a process flow chart in the mode of the system is shown in figure 7, and the control mode is as follows;

the mode needs to be manually started, when the mode is started, the main control device firstly confirms the temperature of the thermometer E, and when the monitored temperature of the thermometer E is higher than 45 ℃, the mode can be normally started; at the moment, the fourth three-way valve and the third three-way valve B disconnect the pipeline of the heat storage circulating pump part and are communicated with the pipeline of the second heating circulating pump, and the third three-way valve C and the third three-way valve D disconnect the pipeline of the heat collector part and are communicated with the pipeline of the house part; the second heating circulating pump and the first heating circulating pump are started simultaneously, and the control system monitors the temperature of all the thermometers; when the system is in the mode, the main control device stops the operation mode when monitoring that the temperature of the thermometer F (the temperature of the buffer water tank) reaches 85 ℃, automatically switches to the heat storage mode to operate, and switches back to the current mode until the temperature monitored by the thermometer F is lower than 80 ℃; when the thermometer E displays a temperature below 40 c, indicating that the heat stored in the heat storage reservoir is substantially consumed, a "low energy warning" is activated, this warning being persistent and manually processed by the user at his discretion (the user may switch to another mode to operate the system or ignore the warning to continue operating in the current mode).

The heating mode of the heat collector is as follows:

the heat collector heating mode is only operated in heating seasons, and in the mode, the heat storage water pool is in a disconnected state, and only the heat collector provides the energy required for heating for the house, and the mode is generally manually switched to the operation mode by a user when the house heating energy consumption demand is low or the residual energy of the heat storage water pool is less, and when the mode is operated, the system needs an auxiliary heating device to be matched for operation, and the start and stop of auxiliary energy equipment are also controlled by the main control device. The process flow diagram of the system in this mode is shown in fig. 8, and is controlled as follows;

when the mode is manually started, the control system firstly confirms the temperature of the thermometer F, and when the temperature displayed by the thermometer F is higher than 40 ℃, the mode can be normally started; at the moment, the three-way valves C and D disconnect the hot water storage pool part (the fourth three-way valve and the fourth three-way valve B do not act), a heating circulating pump in a house is started to perform heating circulation, the heating circulating pump stops when the temperature displayed by the thermometer F is lower than 30 ℃, and the control system performs start-stop control on the auxiliary heating device according to the temperature of a heat load end monitored by a temperature measuring instrument carried by the auxiliary energy component, so that 30-40 ℃ compensation heating is realized; in this mode, the solar system (heating circulation pump) and the auxiliary energy unit cannot be started at the same time, and when one is started, the other is automatically switched to the standby state.

The system collects solar energy in non-heating seasons (mainly spring, summer and autumn), stores the energy in the ground, takes out the energy in winter, is used for providing energy required by heating of buildings in winter, adopts an auxiliary heating device as certain assistance and supplement, solves the problem of heating of distributed residential buildings or other types of buildings in winter in a cross-season heat storage mode, has higher energy guarantee rate of total heating, stronger operation continuity and more excellent performance, and can effectively avoid the operation risk of system performance reduction or poorer continuity caused by lower solar irradiance in winter.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cross-season thermal heating system, comprising: the system comprises a solar heat collector buffer water tank, a first heating circulating pump, a second heating circulating pump, a heat storage circulating pump, a first temperature detection device, a second temperature detection device, a third temperature detection device, a cross-season heat storage water pool and a main control device;

2. The cross-season thermal heating system according to claim 1, wherein the cross-season water storage pool is an inverted trapezoid water pool half-buried underground, waterproof heat insulation layers are laid on the side wall and the bottom of the cross-season water storage pool, and a waterproof heat insulation cover is arranged on the top of the cross-season water storage pool.

3. The cross-season thermal heating system according to claim 2, wherein the waterproof insulation layer comprises a polyethylene foam insulation board, and a first waterproof film is laid on the polyethylene foam insulation board.

4. The cross-season thermal heating system of claim 3, wherein the first waterproof membrane is a polyethylene geomembrane.

5. The cross-season thermal heating system according to claim 2, wherein the waterproof and heat-insulating cover comprises a cover plate, a heat-insulating layer is arranged below the cover plate, and a combined waterproof layer is arranged below the heat-insulating layer.

6. The cross-season thermal heating system of claim 5, wherein the cover plate is a cover plate made of a cross-linked polyethylene material.

7. The cross-season thermal heating system according to claim 2, wherein the side wall of the cross-season heat storage water tank is at an angle of 135 ° to the bottom edge.

8. The system of claim 1, wherein the auxiliary heating device comprises an auxiliary electric heating rod mounted on the heating end unit and connected to the main control device through a control panel.

9. The cross-season thermal heating system according to claim 8, wherein the auxiliary electric heating rod comprises an outer sleeve head, a sleeve and a resistance heating strip are connected to the outer sleeve head, a probe signal line is arranged in the sleeve, and a probe is connected to the tail end of the probe signal line.