Electric boiler and conduction oil heat storage combined heat supply system

Abstract

The utility model discloses an electric boiler and heat conduction oil heat storage combined heat supply system which comprises an electricity input module, a water input module, an electric boiler module, a heat conduction oil electric heating module, a heat conduction oil heat storage module, an oil-water heat exchange module and a heat supply output module. A water outlet of the water input module is connected with a water inlet of the electric boiler module, a water outlet of the electric boiler module is connected with the heat supply output module, a water outlet of the water input module is connected with a water inlet of the oil-water heat exchange module, and a water outlet of the oil-water heat exchange module is connected with the heat supply output module. A heat-conducting oil inlet and outlet of the heat-conducting oil electric heating module is connected with a heat-conducting oil inlet and outlet of the heat-conducting oil heat storage module, and the heat-conducting oil inlet and outlet of the heat-conducting oil heat storage module is connected with a heat-conducting oil inlet and outlet of the oil-water heat exchange module; the electric output end of the electric input module is electrically connected with the heat conduction oil electric heating module and the electric boiler module. The heat conduction oil serves as a heat transfer and storage medium, green electricity and valley electricity serve as main energy sources, and a stable and efficient heat supply mode is formed.

Description

Technical Field

[0001] This utility model belongs to the field of combined heating technology of electric boiler and thermal oil storage, specifically relating to a combined heating system of electric boiler and thermal oil storage. Background Technology

[0002] Currently, my country's heating sector relies heavily on fossil fuels (coal, natural gas, and oil). While this traditional heating method has met the needs of social development to some extent, it has also exposed many serious problems. Traditional small coal-fired boilers and gas-fired boilers are relatively outdated in technology, with low energy conversion efficiency. A large amount of energy is wasted during combustion and conversion, failing to be fully utilized.

[0003] As an excellent heat transfer and storage medium, heat transfer oil possesses significant advantages such as high boiling point, low viscosity, and good chemical stability. Liquid heat transfer oils are typically suitable for a temperature range of 12℃-400℃, with some synthetic oils even reaching above 400℃. This characteristic makes them ideal for liquid circulation, enabling stable and efficient heat transfer in various heating systems. Currently, heat transfer oils are widely used in solar thermal power generation and compressed air energy storage, providing reliable technical support for the development of these fields.

[0004] However, despite the excellent performance of thermal oil in heat transfer and storage, there is currently no mature and complete heating system on the market that combines electric boilers with thermal oil storage for combined heating. Electric boilers, as clean and efficient heating equipment, have advantages such as zero emissions and flexible adjustment, but using electric boilers alone for heating has problems such as high cost and unstable power supply. Thermal oil storage technology, on the other hand, can convert electrical energy into heat energy and store it during off-peak hours, releasing the heat during peak hours or when heating demand is high, achieving peak shaving and valley filling of electricity and improving energy utilization efficiency.

[0005] Therefore, there is an urgent need to provide a combined heating system of electric boiler and thermal oil storage that can achieve clean, low-carbon, efficient and stable heating. Utility Model Content

[0006] The purpose of this invention is to provide a combined heating system of electric boiler and thermal oil storage to solve the above-mentioned problems existing in the prior art.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] This utility model provides a combined heating system of electric boiler and thermal oil storage, including: an electric input module, a water input module, an electric boiler module, a thermal oil electric heating module, a thermal oil storage module, an oil-water heat exchange module, and a heat output module;

[0009] The water inlet of the water input module is connected to the water inlet of the electric boiler module via a water supply pipe; the water outlet of the electric boiler module is connected to the heating output module via a water supply pipe; the water outlet of the water input module is connected to the water inlet of the oil-water heat exchange module via a water supply pipe; the water outlet of the oil-water heat exchange module is connected to the heating output module via a water supply pipe; the inlet and outlet of the thermal oil electric heating module are connected to the inlet and outlet of the thermal oil storage module via thermal oil pipes; and the inlet and outlet of the thermal oil storage module are connected to the inlet and outlet of the oil-water heat exchange module via thermal oil pipes.

[0010] The electrical output terminal of the electrical input module is electrically connected to the power supply input terminals of the thermal oil electric heating module and the electric boiler module, respectively.

[0011] In one possible design, the electrical input module includes a power grid and a photovoltaic power generation unit;

[0012] The power output terminal of the power grid and the power output terminal of the photovoltaic power generation unit are respectively electrically connected to the power input terminals of the heat transfer oil electric heating module and the electric boiler module.

[0013] In one possible design, the electric boiler module includes an electric boiler and a water spray desuperheating device;

[0014] The inlet of the electric boiler serves as the water inlet of the electric boiler module and is connected to the outlet of the water input module via a water supply pipe. The first outlet of the electric boiler is connected to the heating output module via a water supply pipe, and the second outlet of the electric boiler is connected to the heating output module via the water spray de-heating device.

[0015] In one possible design, the thermal oil electric heating module includes a thermal oil electric heater;

[0016] The inlet of the thermal oil electric heater is connected to the outlet of the thermal oil storage module via a thermal oil pipeline, and the outlet of the thermal oil electric heater is connected to the inlet of the thermal oil storage module via a thermal oil pipeline.

[0017] In one possible design, the thermal oil storage module includes a low-temperature thermal oil storage tank, a high-temperature thermal oil storage tank, a low-temperature thermal oil pump, a high-temperature thermal oil pump, and a temperature regulating pump.

[0018] The outlet of the electric heating module for thermal oil is connected to the inlet of the high-temperature thermal oil storage tank via a thermal oil pipeline. The outlet of the high-temperature thermal oil storage tank is connected to the oil-side inlet of the oil-water heat exchange module via a high-temperature thermal oil pump. The first outlet of the low-temperature thermal oil storage tank is connected to the inlet of the electric heating module for thermal oil via a low-temperature thermal oil pump. The second outlet of the low-temperature thermal oil storage tank is connected to the oil-side inlet of the oil-water heat exchange module via a temperature regulating pump. The oil-side outlet of the oil-water heat exchange module is connected to the inlet of the low-temperature thermal oil storage tank via a thermal oil pipeline.

[0019] In one possible design, the oil-water heat exchange module includes an oil-water heat exchanger;

[0020] The oil-water heat exchanger adopts a shell-and-tube structure. The oil-side inlet of the oil-water heat exchanger is connected to the outlet of the high-temperature heat transfer oil pump and the second outlet of the low-temperature heat transfer oil storage tank through heat transfer oil pipes. The oil-side outlet of the oil-water heat exchanger is connected to the inlet of the low-temperature heat transfer oil storage tank through heat transfer oil pipes. The water-side inlet of the oil-water heat exchanger is connected to the outlet of the water input module through a water supply pipe. The water-side outlet of the oil-water heat exchanger is connected to the heat output module through a water supply pipe.

[0021] In one possible design, the oil-water heat exchanger includes a preheater, an evaporator, and a superheater;

[0022] The superheater serves as the oil-side inlet of the oil-water heat exchanger and is connected to the outlet of the high-temperature heat transfer oil pump and the second outlet of the low-temperature heat transfer oil storage tank via heat transfer oil pipes. The oil-side outlet of the superheater is connected to the oil-side inlet of the evaporator via heat transfer oil pipes. The oil-side outlet of the evaporator is connected to the oil-side inlet of the preheater via heat transfer oil pipes. The preheater serves as the oil-side outlet of the oil-water heat exchanger and is connected to the inlet of the low-temperature heat transfer oil storage tank via heat transfer oil pipes.

[0023] The preheater serves as the water-side inlet of the oil-water heat exchanger and is connected to the outlet of the water input module via a water supply pipe. The water-side outlet of the preheater is connected to the water-side inlet of the evaporator via a water supply pipe. The water-side outlet of the evaporator is connected to the water-side inlet of the superheater via a water supply pipe. The superheater serves as the water-side outlet of the oil-water heat exchanger and is connected to the heating output module via a water supply pipe.

[0024] In one possible design, the water input module includes a water supply pump;

[0025] The outlet of the water pump serves as the outlet of the water input module and is connected to the inlet of the electric boiler module and the oil-water heat exchange module via water pipelines.

[0026] In one possible design, a monitoring and control module is also included;

[0027] The monitoring and control module is electrically connected to the electrical input module, the electric boiler module, the thermal oil electric heating module, the thermal oil heat storage module, and the oil-water heat exchange module.

[0028] Beneficial Effects: This utility model provides a combined heating system of electric boiler and thermal oil storage, including an electric input module, a water input module, an electric boiler module, a thermal oil electric heating module, a thermal oil storage module, an oil-water heat exchange module, and a heat output module; wherein, the water outlet of the water input module is connected to the water inlet of the electric boiler module through a water supply pipe, the water outlet of the electric boiler module is connected to the heat output module through a water supply pipe, and the water outlet of the water input module is connected to the water inlet of the oil-water heat exchange module. The oil-water heat exchange module and the heating output module are connected via water pipelines. The inlet and outlet of the thermal oil electric heating module are connected to the inlet and outlet of the thermal oil storage module via thermal oil pipelines. The inlet and outlet of the thermal oil storage module are also connected to the inlet and outlet of the thermal oil inlet and outlet of the oil-water heat exchange module via thermal oil pipelines. The electrical output terminal of the electrical input module is electrically connected to the power input terminals of both the thermal oil electric heating module and the electric boiler module. Using thermal oil as the heat transfer and storage medium, and green electricity and off-peak electricity as the main energy sources, a clean, low-carbon, efficient, and stable heating method is constructed to adapt to fluctuations in heat load, forming a stable and efficient heating mode. Attached Figure Description

[0029] Figure 1 Functional structural block diagram of the combined electric boiler and thermal oil storage heating system provided in this embodiment of the utility model;

[0030] Figure 2 A schematic diagram of the structure of the combined electric boiler and thermal oil storage heating system provided in this embodiment of the utility model.

[0031] The components include: 1. Power grid; 2. Photovoltaic power generation unit; 3. Electric boiler; 4. Water spray desuperheating device; 5. Thermal oil electric heater; 6. Distribution cabinet; 7. Low-temperature thermal oil storage tank; 8. High-temperature thermal oil storage tank; 9. Low-temperature thermal oil pump; 10. High-temperature thermal oil pump; 11. Temperature regulating pump; 12. Oil-water heat exchanger; 13. Water supply pump; 14. Heating output module; and 15. Monitoring and control module. Detailed Implementation

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the present utility model will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the accompanying drawings is only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. It should be noted that the description of these embodiments is used to help understand this utility model, but does not constitute a limitation on this utility model.

[0033] It should be understood that although the terms first, second, etc., may be used herein to describe various units, these units should not be limited by these terms. These terms are only used to distinguish one unit from another. For example, the first unit may be referred to as the second unit, and similarly, the second unit may be referred to as the first unit, without departing from the scope of the exemplary embodiments of this utility model.

[0034] It should be understood that the term "and / or" that may appear in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist simultaneously. The term " / and" that may appear in this document describes another relationship between related objects, indicating that two relationships can exist. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " that may appear in this document generally indicates that the related objects before and after it are in an "or" relationship.

[0035] Example 1:

[0036] like Figure 1 As shown, this embodiment provides a combined heating system of electric boiler and thermal oil storage, including: an electric input module, a water input module, an electric boiler module, a thermal oil electric heating module, a thermal oil storage module, an oil-water heat exchange module, and a heating output module 14;

[0037] The water inlet of the water input module is connected to the water inlet of the electric boiler module via a water supply pipe. The water outlet of the electric boiler module is connected to the heating output module 14 via a water supply pipe. The water outlet of the water input module is connected to the water inlet of the oil-water heat exchange module via a water supply pipe. The water outlet of the oil-water heat exchange module is connected to the heating output module 14 via a water supply pipe. The inlet and outlet of the thermal oil electric heating module are connected to the inlet and outlet of the thermal oil storage module via thermal oil pipes. The inlet and outlet of the thermal oil storage module are connected to the inlet and outlet of the thermal oil of the oil-water heat exchange module via thermal oil pipes.

[0038] The electrical output terminal of the electrical input module is electrically connected to the power supply input terminals of the thermal oil electric heating module and the electric boiler module, respectively.

[0039] It should be noted that the electric boiler and thermal oil storage combined heating system provided in this embodiment uses thermal oil as the heat transfer medium and thermal storage medium, and green electricity and off-peak electricity as the main energy sources to construct a clean, low-carbon, efficient and stable heating method. Moreover, the electric boiler module and the thermal oil electric heating module can be controlled to work accordingly according to different needs to adapt to the fluctuation of heat load, thereby forming a stable and efficient heating mode.

[0040] This heating mode has multiple operating modes to meet different heat load demands. Specifically, it can include the following four operating modes:

[0041] Mode 1: When the power generation of green electricity meets the current heat load demand, the power generation of green electricity is preferentially used to input the electric boiler module for direct heating, and input to the heat output module 14 to meet the heat load demand. The remaining power generation of green electricity is input to the thermal oil electric heating module to heat the hot oil, and the heat is stored in the thermal oil heat storage module.

[0042] Mode 2: When the power generation of green electricity does not meet the current heat load demand and it is currently in the off-peak electricity period, the power generation of green electricity is used first to input the electric boiler module for direct heating, and the off-peak electricity is used to input the electric boiler module to input the heat output module 14 to meet the heat load demand.

[0043] Mode 3: When the power generation of green electricity does not meet the current heat load demand and it is not during off-peak hours, if the heat storage of the thermal oil storage module is sufficient, the power generation of green electricity is preferentially used to input the electric boiler module for direct heating, and the thermal oil storage module is activated to supplement the heat supply by utilizing the internal heat storage of the thermal oil storage module. The heat supply of the electric boiler module and the heat storage of the thermal oil storage module are combined and input to the heat output module 14 to meet the heat load demand.

[0044] Mode 4: When the power generation of green electricity does not meet the current heat load demand and it is not currently during off-peak hours, if the heat storage of the thermal oil storage module is insufficient, the peak or flat power input to the electric boiler module is used first for direct heating, and the thermal oil storage module is activated to supplement the heat supply by utilizing the internal heat storage of the thermal oil storage module. The heat supply of the electric boiler module and the heat storage of the thermal oil storage module are combined and input to the heat output module 14 to meet the heat load demand.

[0045] By combining these four working modes, a high-efficiency, low-carbon, and stable heating effect is achieved. This makes the actual implementation of the electric boiler and thermal oil storage combined heating system provided in this embodiment of great significance for heating in cold regions and for hot water and steam supply in industrial parks.

[0046] Example 2:

[0047] like Figure 2 As shown, this embodiment provides a combined heating system of electric boiler and thermal oil storage. In one possible implementation, the electrical input module includes a power grid 1 and a photovoltaic power generation unit 2.

[0048] The power output terminals of the power grid 1 and the photovoltaic power generation unit 2 are respectively electrically connected to the power input terminals of the heat transfer oil electric heating module and the electric boiler module.

[0049] It should be noted that, depending on the actual situation, the power output of the power grid 1 and the photovoltaic power generation unit 2 can be prioritized for the power input of the photovoltaic power generation unit 2. When the power output provided by the photovoltaic power generation unit 2 is insufficient to meet the heat load requirements of the heat output module 14, the power grid 1 will be used to supplement the power supply, so as to ensure a stable power supply while taking into account the requirements of low carbon and environmental protection.

[0050] In one possible implementation, the electric boiler module includes an electric boiler 3 and a water spray desuperheating device 4;

[0051] The inlet of the electric boiler 3 serves as the water inlet of the electric boiler module and is connected to the outlet of the water input module via a water supply pipe. The first outlet of the electric boiler 3 is connected to the heating output module 14 via a water supply pipe, and the second outlet of the electric boiler 3 is connected to the heating output module 14 via the water spray de-heating device 4.

[0052] In one possible implementation, the thermal oil electric heating module includes a thermal oil electric heater 5;

[0053] The inlet of the thermal oil electric heater 5 is connected to the outlet of the thermal oil storage module via a thermal oil pipeline, and the outlet of the thermal oil electric heater 5 is connected to the inlet of the thermal oil storage module via a thermal oil pipeline.

[0054] It should be noted that this combined electric boiler and thermal oil storage heating system also includes a distribution cabinet 6, which receives electrical energy from the electrical input modules (grid 1 and photovoltaic power generation unit 2) and dynamically distributes the electrical energy to the thermal oil electric heater 5 and the electric boiler. When the electric boiler module and the thermal oil electric heating module switch operating modes, the distribution cabinet 6 can be used to switch the main power supply to ensure the continuous and stable operation of the thermal oil electric heating module. Through the voltage regulator, current controller, and other devices built into the distribution cabinet 6, the power generated by the electrical input modules can be stably input to the thermal oil electric heating module and the electric boiler module, preventing a decrease in heating efficiency or equipment damage due to fluctuations in grid 1.

[0055] In one possible implementation, the thermal oil storage module includes a low-temperature thermal oil storage tank 7, a high-temperature thermal oil storage tank 8, a low-temperature thermal oil pump 9, a high-temperature thermal oil pump 10, and a temperature regulating pump 11.

[0056] The outlet of the electric heating module for thermal oil is connected to the inlet of the high-temperature thermal oil storage tank 8 via a thermal oil pipeline. The outlet of the high-temperature thermal oil storage tank 8 is connected to the oil-side inlet of the oil-water heat exchange module via the high-temperature thermal oil pump 10. The first outlet of the low-temperature thermal oil storage tank 7 is connected to the inlet of the electric heating module for thermal oil via the low-temperature thermal oil pump 9. The second outlet of the low-temperature thermal oil storage tank 7 is connected to the oil-side inlet of the oil-water heat exchange module via the temperature regulating pump 11. The oil-side outlet of the oil-water heat exchange module is connected to the inlet of the low-temperature thermal oil storage tank 7 via a thermal oil pipeline.

[0057] It should be noted that the temperature regulating pump 11 in the heat transfer oil storage module can dynamically mix the low-temperature heat transfer oil (from the low-temperature heat transfer oil storage tank 7) with the high-temperature heat transfer oil output from the high-temperature heat transfer oil storage tank 8 to reduce the inlet oil temperature of the oil-water heat exchange module and avoid overload of the oil-water heat exchange module or overheating of the water supply due to excessively high oil temperature.

[0058] In one possible implementation, the oil-water heat exchange module includes an oil-water heat exchanger 12;

[0059] The oil-water heat exchanger 12 adopts a shell-and-tube structure. The oil-side inlet of the oil-water heat exchanger 12 is connected to the outlet of the high-temperature heat transfer oil pump 10 and the second outlet of the low-temperature heat transfer oil storage tank 7 through heat transfer oil pipes. The oil-side outlet of the oil-water heat exchanger 12 is connected to the inlet of the low-temperature heat transfer oil storage tank 7 through heat transfer oil pipes. The water-side inlet of the oil-water heat exchanger 12 is connected to the outlet of the water input module through a water supply pipe. The water-side outlet of the oil-water heat exchanger 12 is connected to the heat output module 14 through a water supply pipe.

[0060] In one possible implementation, the oil-water heat exchanger 12 includes a preheater, an evaporator, and a superheater;

[0061] The superheater serves as the oil-side inlet of the oil-water heat exchanger 12 and is connected to the outlet of the high-temperature heat transfer oil pump 10 and the second outlet of the low-temperature heat transfer oil storage tank 7 via heat transfer oil pipes. The oil-side outlet of the superheater is connected to the oil-side inlet of the evaporator via heat transfer oil pipes. The oil-side outlet of the evaporator is connected to the oil-side inlet of the preheater via heat transfer oil pipes. The preheater serves as the oil-side outlet of the oil-water heat exchanger 12 and is connected to the inlet of the low-temperature heat transfer oil storage tank 7 via heat transfer oil pipes.

[0062] The preheater serves as the water-side inlet of the oil-water heat exchanger 12 and is connected to the outlet of the water input module via a water supply pipe. The water-side outlet of the preheater is connected to the water-side inlet of the evaporator via a water supply pipe. The water-side outlet of the evaporator is connected to the water-side inlet of the superheater via a water supply pipe. The superheater serves as the water-side outlet of the oil-water heat exchanger 12 and is connected to the heating output module 14 via a water supply pipe.

[0063] In one possible implementation, the water input module includes a water pump 13;

[0064] The outlet of the water pump 13 serves as the outlet of the water input module and is connected to the inlet of the electric boiler module and the oil-water heat exchange module respectively through a water pipeline.

[0065] In one possible implementation, a monitoring and control module 15 is also included;

[0066] The monitoring and control module 15 is electrically connected to the electrical input module, the electric boiler module, the thermal oil electric heating module, the thermal oil heat storage module, and the oil-water heat exchange module, respectively.

[0067] It should be noted that the monitoring and control module 15 may preferably include a temperature sensor, a pressure sensor, and a flow sensor, which are respectively installed in each module of the electric boiler and thermal oil heat storage combined heating system provided in this embodiment. These sensors are used to collect temperature, pressure, and flow data in real time, so as to dynamically adjust the power of the electric boiler module, the power of the thermal oil heating module, and the operating status, and to achieve the following functions:

[0068] Prevent the electric boiler from overheating or exceeding pressure limits;

[0069] Optimize the heat release, heat storage and heat dissipation processes of the thermal oil electric heater 5 to improve energy utilization efficiency;

[0070] Feedback adjustments are made based on heat load fluctuations to switch heating modes;

[0071] Ensure the efficient and stable operation of the oil-water heat exchanger 12 and avoid problems such as heat transfer oil leakage.

[0072] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A combined heating system of electric boiler and thermal oil storage, characterized in that, include: Electric input module, water input module, electric boiler module, thermal oil electric heating module, thermal oil heat storage module, oil-water heat exchange module and heat output module (14); The water outlet of the water input module is connected to the water inlet of the electric boiler module via a water supply pipe. The water outlet of the electric boiler module is connected to the heating output module (14) via a water supply pipe. The water outlet of the water input module is connected to the water inlet of the oil-water heat exchange module via a water supply pipe. The water outlet of the oil-water heat exchange module is connected to the heating output module (14) via a water supply pipe. The heat transfer oil inlet and outlet of the heat transfer oil electric heating module are connected to the heat transfer oil inlet and outlet of the heat transfer oil storage module via heat transfer oil pipes. The heat transfer oil inlet and outlet of the heat transfer oil storage module are connected to the heat transfer oil inlet and outlet of the oil-water heat exchange module via heat transfer oil pipes. The electrical output terminal of the electrical input module is electrically connected to the power supply input terminals of the thermal oil electric heating module and the electric boiler module, respectively.

2. The combined electric boiler and thermal oil storage heating system according to claim 1, characterized in that, The electrical input module includes a power grid (1) and a photovoltaic power generation unit (2); The power output terminal of the power grid (1) and the power output terminal of the photovoltaic power generation unit (2) are respectively electrically connected to the power supply input terminals of the heat transfer oil electric heating module and the electric boiler module.

3. The combined electric boiler and thermal oil storage heating system according to claim 1, characterized in that, The electric boiler module includes an electric boiler (3) and a water spray desuperheating device (4); The inlet end of the electric boiler (3) serves as the water inlet of the electric boiler module and is connected to the water outlet of the water input module through a water supply pipe. The first outlet end of the electric boiler (3) is connected to the heating output module (14) through a water supply pipe, and the second outlet end of the electric boiler (3) is connected to the heating output module (14) after passing through the water spray de-heating device (4).

4. The combined electric boiler and thermal oil storage heating system according to claim 1, characterized in that, The thermal oil electric heating module includes a thermal oil electric heater (5); The inlet of the thermal oil electric heater (5) is connected to the outlet of the thermal oil storage module via a thermal oil pipe, and the outlet of the thermal oil electric heater (5) is connected to the inlet of the thermal oil storage module via a thermal oil pipe.

5. The combined electric boiler and thermal oil storage heating system according to claim 1, characterized in that, The heat transfer oil storage module includes a low-temperature heat transfer oil storage tank (7), a high-temperature heat transfer oil storage tank (8), a low-temperature heat transfer oil pump (9), a high-temperature heat transfer oil pump (10), and a temperature regulating pump (11). The outlet of the heat transfer oil electric heating module is connected to the inlet of the high-temperature heat transfer oil storage tank (8) through a heat transfer oil pipeline. The outlet of the high-temperature heat transfer oil storage tank (8) is connected to the oil-side inlet of the oil-water heat exchange module through the high-temperature heat transfer oil pump (10). The first outlet of the low-temperature heat transfer oil storage tank (7) is connected to the inlet of the heat transfer oil electric heating module through the low-temperature heat transfer oil pump (9). The second outlet of the low-temperature heat transfer oil storage tank (7) is connected to the oil-side inlet of the oil-water heat exchange module through the temperature regulating pump (11). The oil-side outlet of the oil-water heat exchange module is connected to the inlet of the low-temperature heat transfer oil storage tank (7) through a heat transfer oil pipeline.

6. The combined electric boiler and thermal oil storage heating system according to claim 5, characterized in that, The oil-water heat exchange module includes an oil-water heat exchanger (12); The oil-water heat exchanger (12) adopts a shell-and-tube structure. The oil-side inlet of the oil-water heat exchanger (12) is connected to the outlet of the high-temperature heat transfer oil pump (10) and the second outlet of the low-temperature heat transfer oil storage tank (7) through heat transfer oil pipes. The oil-side outlet of the oil-water heat exchanger (12) is connected to the inlet of the low-temperature heat transfer oil storage tank (7) through heat transfer oil pipes. The water-side inlet of the oil-water heat exchanger (12) is connected to the outlet of the water input module through a water supply pipe. The water-side outlet of the oil-water heat exchanger (12) is connected to the heat output module (14) through a water supply pipe.

7. The combined electric boiler and thermal oil storage heating system according to claim 6, characterized in that, The oil-water heat exchanger (12) includes a preheater, an evaporator, and a superheater; The superheater serves as the oil-side inlet of the oil-water heat exchanger (12), and is connected to the outlet of the high-temperature heat transfer oil pump (10) and the second outlet of the low-temperature heat transfer oil storage tank (7) via heat transfer oil pipes. The oil-side outlet of the superheater is connected to the oil-side inlet of the evaporator via heat transfer oil pipes. The oil-side outlet of the evaporator is connected to the oil-side inlet of the preheater via heat transfer oil pipes. The preheater serves as the oil-side outlet of the oil-water heat exchanger (12), and is connected to the inlet of the low-temperature heat transfer oil storage tank (7) via heat transfer oil pipes. The preheater serves as the water-side inlet of the oil-water heat exchanger (12) and is connected to the outlet of the water input module via a water supply pipe. The water-side outlet of the preheater is connected to the water-side inlet of the evaporator via a water supply pipe. The water-side outlet of the evaporator is connected to the water-side inlet of the superheater via a water supply pipe. The superheater serves as the water-side outlet of the oil-water heat exchanger (12) and is connected to the heat output module (14) via a water supply pipe.

8. The combined electric boiler and thermal oil storage heating system according to claim 1, characterized in that, The water input module includes a water pump (13); The outlet of the water pump (13) serves as the outlet of the water input module and is connected to the inlet of the electric boiler module and the oil-water heat exchange module respectively through a water pipeline.

9. The combined electric boiler and thermal oil storage heating system according to claim 1, characterized in that, It also includes a monitoring and control module (15); The monitoring and control module (15) is electrically connected to the electrical input module, the electric boiler module, the thermal oil electric heating module, the thermal oil heat storage module and the oil-water heat exchange module, respectively.

Images