An automatic heat storage and release conversion device

Abstract

This invention provides an automatic heat storage and release conversion device, comprising a high-temperature compensation port, an electrically controlled mixing valve, a tertiary outlet, a water pump A, a tertiary inlet, a secondary outlet, an electrically controlled three-way valve, a primary inlet, a drain valve, an outer tank, an inner tank, a secondary inlet, a primary outlet, and a pressure relief valve. These components are connected via pipelines. The primary inlet and outlet are welded to the outer and inner tanks and connected to the inner tank. The secondary inlet and outlet are welded to the outer tank and connected to it. The tertiary outlet is welded to the outer tank and connected to it. The tertiary inlet is welded to both the outer and inner tanks and connected to the inner tank. The device also includes a PLC controller, which is electrically connected to the electrically controlled mixing valve, the electrically controlled three-way valve, water pump A, and an external heat pump and water pump, respectively, to achieve intelligent conversion between heat storage and heat release states, thereby improving energy utilization efficiency and operational economy.

Description

Technical Field

[0001] This invention relates to the field of energy storage and conversion technology, and in particular to an automatic heat storage and release conversion device. Background Technology

[0002] In today's era of rapid development in new energy power generation, thermal storage technology plays a crucial role in improving energy efficiency, reducing production costs, and achieving rational energy allocation and utilization in the field of peak shaving and valley filling energy utilization. Existing thermal storage devices cannot achieve maximum heat storage efficiency without adding heat source equipment, impacting the economic viability of the equipment and energy utilization. Furthermore, traditional thermal storage devices often have complex structures and require manual intervention to switch between storage and release states, failing to automatically adapt to heating demand, changes in storage and release temperatures, and energy economics, resulting in low energy efficiency and inconvenient operation. Therefore, there is an urgent need for a device capable of automatically switching between storage and release states to improve energy utilization efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide an automatic heat storage and release switching device that can automatically switch between heat storage and heat release states according to ambient temperature, energy unit price and actual needs, thereby improving energy utilization efficiency and realizing the rational distribution and economical use of heat.

[0004] According to an objective of the present invention, and in response to the problems raised in the background, the present invention provides an automatic heat storage and release conversion device, comprising a high-temperature compensation port, an electrically controlled mixing valve, a tertiary outlet, a water pump A, a tertiary inlet, a secondary outlet, an electrically controlled three-way valve, a primary inlet, a drain valve, an outer tank, an inner tank, a secondary inlet, a primary outlet, and a pressure relief valve, and a heating system composed of the user heating system, a heating supply pipe, a heating return pipe, a water pump B, and a heat pump A, as well as a heat storage tank, a heat exchanger, a heat pump B, and a water pump C assembly. The thermal storage system comprises the above devices connected by pipes. The primary inlet and primary outlet are welded to the outer tank and the inner tank, respectively, and are connected to the inner tank. The secondary inlet and secondary outlet are welded to the outer tank, respectively, and are connected to the outer tank. The tertiary outlet is welded to the outer tank, respectively, and is connected to the outer tank. The tertiary inlet is welded to the outer tank and the inner tank, respectively, and is connected to the inner tank. The system also includes a PLC controller, which is electrically connected to the electrically controlled mixing valve, the electrically controlled three-way valve, water pump A, and the external heat pump and water pump, respectively, and is used to receive temperature and peak-valley electricity price signals and control the operation of each component.

[0005] Furthermore, the inner tank is located inside the outer tank, and the inner and outer tanks are sealed by welding and are not connected to each other.

[0006] Furthermore, the water pump A is installed between the three inlets and the three outlets via a pipeline.

[0007] Furthermore, the electrically controlled three-way valve is installed on the upstream pipe of the primary water inlet, and its input end can be connected to an external heat pump A, while the branch pipe is connected upward to the secondary water outlet.

[0008] Furthermore, the electrically controlled mixing valve is installed at the high-temperature compensation port.

[0009] Furthermore, the pressure relief valve is installed on the upper part of the outer tank.

[0010] Furthermore, the drain valve is installed at the bottom of the outer tank.

[0011] Furthermore, the three water inlets are bent upwards at 90 degrees in the middle of the inner tank along the water flow direction, which can reduce turbulence and increase the flow rate of the circulating water.

[0012] The automatic heat storage and release conversion device described in this invention not only meets the heating needs of users, but also enables the heat pump to operate at full capacity during periods of abundant sunshine and low electricity prices, thereby improving energy utilization efficiency and achieving the goal of energy conservation and consumption reduction. Attached Figure Description

[0013] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. All of these are within the scope of protection of the present invention.

[0014] Figure 1 This is a cross-sectional view of an automatic heat storage and release conversion device according to an embodiment of the present invention;

[0015] Figure 2 This is a schematic diagram of the flow during normal heating and low-temperature thermal storage operation according to an embodiment of the present invention.

[0016] Figure 3 This is a schematic diagram of the flow of heat storage and heating in parallel operation according to an embodiment of the present invention;

[0017] Figure 4 This is a schematic diagram of the flow of heat pump A supplementing the heating supply when the heating is insufficient, under the parallel operation of heat storage and normal heating in an embodiment of the present invention.

[0018] Figure 5 This is a schematic diagram of the flow during the operation of the heat storage tank for heating, according to an embodiment of the present invention.

[0019] In the diagram: 1. High-temperature compensation port; 2. Electrically controlled mixing valve; 3. Tertiary outlet; 4. Water pump A; 5. Tertiary inlet; 6. Secondary outlet; 7. Electrically controlled three-way valve; 8. Primary inlet; 9. Drain valve; 10. Outer tank; 11. Inner tank; 12. Secondary inlet; 13. Primary outlet; 14. Pressure relief valve; 2-1 User heating; 2-2 Heating supply pipe; 2-3 Heating return pipe; 2-4 Water pump B; 2-5 Heat pump A; 2-6 Thermal storage tank; 2-7 Heat exchanger; 2-8 Heat pump B; 2-9 Water pump C. Detailed Implementation

[0020] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0022] Example 1

[0023] like Figure 1As shown, an automatic heat storage and release conversion device includes a high-temperature compensation port 1, an electrically controlled mixing valve 2, a tertiary outlet 3, a water pump A4, a tertiary inlet 5, a secondary outlet 6, an electrically controlled three-way valve 7, a primary inlet 8, a drain valve 9, an outer tank 10, an inner tank 11, a secondary inlet 12, a primary outlet 13, and a pressure relief valve 14, forming an automatic heat storage and release conversion device; a heating system composed of the user heating 2-1, heating water supply pipe 2-2, heating return pipe 2-3, water pump B2-4, and heat pump A2-5; and a heat storage system composed of the heat storage tank 2-6, a heat exchanger 2-7, heat pump B2-8, and water pump C2-9. The above devices are connected by pipelines. The primary inlet 8 and the primary outlet 13 are welded to the outer tank 10 and the inner tank 11. The inner tank 11 is connected to the inner tank 11. The secondary inlet 12 and the secondary outlet 6 are welded to the outer tank 10 and connected to the outer tank 10. The tertiary outlet 3 is welded to the outer tank 10 and connected to the outer tank 10. The tertiary inlet 5 is welded to the outer tank 10 and the inner tank 11 and connected to the inner tank 11. The tertiary inlet 5 bends upward in the middle of the inner tank 11 along the water flow direction. The inner tank 11 is enclosed inside the outer tank 10. The inner tank 11 and the outer tank 10 are sealed to each other. The water pump A4 is installed between the tertiary inlet 5 and the tertiary outlet 3. The electrically controlled three-way valve 7 is installed between the heat pump A2-5 and the primary inlet 8. The branch pipe of the electrically controlled three-way valve 7 is connected to the secondary outlet 6. The electrically controlled mixing valve 2 is installed at the high temperature compensation port 1.

[0024] like Figure 2 As shown, during periods of low electricity prices, the thermal storage system and heating system operate in series. Heat pumps A2-5, B2-8, and B2-4 are all activated. The left side of the electrically controlled three-way valve 7 is open, while the top is closed. Under the pressure of water pump B2-4, the circulating water flows from the heating return pipe 2-3 through water pump B2-4, heat pump A2-5, electrically controlled three-way valve 7, primary inlet 8, inner tank 11, primary outlet 13, heat pump B2-8, heat exchanger 2-7, secondary inlet 12, outer tank 10, secondary outlet 6, heating supply pipe 2-2, and user heating 2-1. When flowing through heat exchanger 2-7, under the action of water pump C2-9, it stores heat in the thermal storage tank 2-6. When flowing through user heating 2-1, it meets the user's heating needs. The direction of the circulating water flow is shown by a single arrow in the figure.

[0025] like Figure 3 As shown, in Figure 2Based on the initial conditions, when the thermal storage system and the heating system operate in series, the temperature of the thermal storage tank gradually rises, and the temperature of the circulating water heating supply pipe 2-2 will increase. Once it exceeds the heating temperature, and the electricity price is still at a low point, the thermal storage system and the heating system will operate separately in parallel. The PLC will issue a command to start water pump A4, the left side of the electrically controlled three-way valve 7 will close, and the top will open. Under the pressure of water pump A4, the thermal storage system flows through the tertiary inlet 5, the inner tank 11, the primary outlet 13, the heat pump 2-8, the heat exchanger 2-7, the secondary inlet 12, the tertiary outlet 3, and the water pump. A4 completes the heat storage function; under the pressure of water pump B2-4, the heating system will supply heating to user 2-1 along the heating return pipe 2-3, water pump B2-4, heat pump A2-5, and heating supply pipe 2-2. Because the system is a closed loop, although the pipeline is not disconnected at the secondary inlet 6, under the power of water pumps B2-4 and A4, they belong to two separate circulation systems and will not affect each other. Each completes its corresponding heat storage and heating functions. The single arrow in the diagram shows the working circulation water flow direction of the heating system, and the double arrow in the diagram shows the working circulation water flow direction of the heat storage system.

[0026] like Figure 4 As shown, due to factors such as temperature, if Figure 3 After operating for a period of time, the temperature of the heating water supply pipe 2-2 is lower than the user's heating demand. The PLC issues a command to open the electrically controlled mixing valve 2. Under the power of the water pump A4, the hot water in the outer tank 10 will be replenished into the heating water supply pipe 2-2 through the high-temperature compensation port 1 and the electrically controlled mixing valve 2 to compensate for the insufficient heating temperature. According to the temperature of the circulating water in the heating water supply pipe 2-2, the PLC will control the opening size of the electrically controlled mixing valve 2 to ultimately meet the user's heating demand. The single arrow in the diagram shows the working circulating water flow direction of the heating system and the replenishment system. The double arrow in the diagram shows the working circulating water flow direction of the heat storage system. The dotted arrow in the diagram shows the direction of the replenishment water flow due to the decrease in system pressure caused by the opening of the electrically controlled mixing valve 2.

[0027] like Figure 5 As shown, when the electricity price is at its peak, heat pumps A2-5, B2-8, and A4 stop working. The PLC issues a command, and the electrically controlled three-way valve 7 opens to the left and closes at the top. Under the action of water pump B2-4, the circulating water flows from the heating return pipe 2-3 through water pump B2-4, heat pump A2-5, electrically controlled three-way valve 7, primary inlet 8, inner tank 11, primary outlet 13, heat pump B2-8, heat exchanger 2-7, secondary inlet 12, outer tank 10, secondary outlet 6, and inlet pipe 2-2. The heat absorbed by heat exchanger 2-7 from the heat storage tank 2-6 is brought to the user's heating 2-1. At this time, water pump C2-9 continues to operate, continuously outputting heat from the heat storage tank, realizing the extraction of heat from the heat storage tank to meet the user's heating needs. The single arrow in the diagram shows the direction of the circulating water flow in the system.

[0028] It should be noted that during the above process, water pump B2-4 operates continuously, while heat pump A2-5, heat pump B2-8, and electrically controlled three-way valve 7 are controlled in real time by the PLC control program according to the air temperature, time-of-use electricity price, and the temperature of heating water supply pipe 2-3, and automatically switch to achieve the highest economic efficiency and maximum energy efficiency ratio of the equipment operation.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic heat storage and release conversion device, characterized in that, The device comprises an automatic heat storage and release conversion system consisting of a high-temperature compensation port, an electrically controlled mixing valve, a tertiary outlet, a water pump A, a tertiary inlet, a secondary outlet, an electrically controlled three-way valve, a primary inlet, a drain valve, an outer tank, an inner tank, a secondary inlet, a primary outlet, and a pressure relief valve. These components are connected via pipelines. The primary inlet and outlet are welded to the outer and inner tanks and connected to the inner tank. The secondary inlet and outlet are welded to the outer tank and connected to it. The tertiary outlet is welded to the outer tank and connected to it. The tertiary inlet is welded to both the outer and inner tanks and connected to the inner tank. The system also includes a PLC controller, which is electrically connected to the electrically controlled mixing valve, the electrically controlled three-way valve, water pump A, and external heat pumps and water pumps. The PLC controller receives temperature and peak / valley electricity price signals and controls the operation of each component.

2. The automatic heat storage and release conversion device according to claim 1, characterized in that, The three water inlets are bent upwards at 90 degrees in the middle of the inner tank along the direction of water flow.

3. The automatic heat storage and release conversion device according to claim 1, characterized in that, The inner tank is located inside the outer tank, and the inner and outer tanks are sealed by welding and are not connected to each other.

4. The automatic heat storage and release conversion device according to claim 1, characterized in that, The water pump A is installed between the three inlets and the three outlets via a pipeline.

5. The automatic heat storage and release conversion device according to claim 1, characterized in that, The electrically controlled three-way valve is installed on the upstream pipe of the primary water inlet. Its input end can be connected to an external heat pump A, and its branch pipe is connected upward to the secondary water outlet.

6. The automatic heat storage and release conversion device according to claim 1, characterized in that, The electrically controlled mixing valve is installed at the high-temperature compensation port.

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