Single-phase medium heat storage tank

Abstract

The utility model discloses a single-phase medium heat storage tank, which relates to the technical field of heat storage tanks and comprises a tank body. A heat insulation plate is arranged in the tank body; the heat insulation plate comprises a heat insulation plate shell and a heat insulation material, wherein an upper pressure sensor and a lower pressure sensor are arranged on the upper side and the lower side of one end of the heat insulation plate respectively; an upper water distributor is arranged at the top of the inner side of the tank body; the upper water distributor is connected with the hot water inlet and outlet; a lower water distributor is mounted at the bottom of the tank body in a matched manner; one end of the lower water distributor is connected with the cold water inlet and outlet; in the energy storage process, the system can store heat energy or cold energy in the heat storage tank in the form of hot water or cold water, the hot water and the cold water are separated through movement of the heat insulation plate, heat transfer caused by existence of a thermocline is eliminated, and the energy utilization efficiency is further improved.

Description

Technical Field

[0001] This utility model specifically relates to the field of thermal storage tank technology, and more specifically to a single-phase medium thermal storage tank. Background Technology

[0002] China has a large population and a rapidly developing economy in recent years, leading to a continuous increase in energy demand. This increased energy consumption leads to the combustion of fossil fuels, causing environmental pollution. To reduce fossil fuel use, my country has proposed energy conservation and emission reduction policies, calling for increased use of clean and renewable energy. However, the utilization of renewable energy sources such as wind and solar power is limited by the fluctuation and intermittency of output. At the same time, the significant peak-valley difference in heat consumption among Chinese users results in a lag in heat supply adjustments, leading to substantial heat waste and reduced heating quality. Therefore, energy storage technology has developed rapidly in recent years to address these issues.

[0003] Energy storage refers to the technology of storing energy through specific equipment or media and releasing it when needed. There are many types of energy storage, including electrochemical energy storage, thermal energy storage, mechanical energy storage, and electromagnetic energy storage. Thermal energy storage can be further divided into sensible heat storage, latent heat sensible heat storage, and thermochemical sensible heat storage. Sensible heat storage is the most widely used energy storage method, and its energy storage and release are reversible with a very long lifespan. Thermal energy storage tank technology is one type of sensible heat storage.

[0004] During thermal storage, high-temperature hot water enters from the top, while low-temperature hot water (water that has not undergone heat exchange and is cooler than the high-temperature hot water) exits from the bottom. Similarly, during cold storage, low-temperature cold water enters from the bottom, while high-temperature cold water (water that has not undergone heat exchange and is cooler than the low-temperature cold water) exits from the top. Due to the density difference between the hot and cold water, a thermocline forms between the high-temperature and low-temperature water layers. This thermocline moves up and down with the incoming and outgoing water during energy storage, causing heat transfer between the hot and cold water and resulting in wasted stored energy. Utility Model Content

[0005] The purpose of this utility model is to provide a single-phase medium thermal storage tank. In this structure, addressing the key problem of energy waste caused by the presence of a temperature slope layer in traditional thermal storage tank technology, a novel thermal storage tank design is adopted to reduce energy waste by eliminating the temperature slope layer. It can effectively solve the problem of energy supply and demand mismatch in time and space caused by the peak-valley difference in user heat consumption. Furthermore, by replacing peak-shaving boilers with thermal storage tanks and utilizing "peak-valley electricity pricing," it can generate better economic benefits, thereby solving the problems mentioned in the background technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A single-phase medium thermal storage tank includes a tank body; an insulation plate is provided inside the tank body; the insulation plate includes an insulation plate shell and insulation material, wherein an upper pressure sensor and a lower pressure sensor are respectively provided on the upper and lower sides of one end of the insulation plate.

[0008] An upper water distributor is provided on the top of the inner side of the tank; the upper water distributor is connected to the hot water inlet and outlet; a lower water distributor is installed at the bottom of the tank; one end of the lower water distributor is connected to the cold water inlet and outlet.

[0009] As a further technical solution of this utility model, an upper piezoelectric sensor and a lower piezoelectric sensor are provided at one end of the heat insulation plate; the valve plate is disposed between the upper and lower piezoelectric sensors; one end of the valve plate is movably installed with the valve plate shaft; and a sealing ring is provided on the side of the heat insulation plate.

[0010] As a further technical solution of this utility model, the upper pressure sensor, lower pressure sensor, upper piezoelectric sensor and lower piezoelectric sensor are electrically connected to the control system through sensor wiring;

[0011] As a further technical solution of this utility model, a heat insulation layer is provided on the outer wall of the tank; the hot water inlet and outlet and the cold water inlet and outlet both penetrate the heat insulation layer;

[0012] As a further technical solution of this utility model, a lead screw is also provided inside the tank; one end of the lead screw is fixedly installed with a motor; the motor is fixedly installed on the top of the tank; the motor is electrically connected to the control system through a wire; and the lead screw is threadedly connected to the heat insulation plate.

[0013] As a further technical solution of this utility model, the upper pressure sensor and the upper piezoelectric sensor are both located above the heat insulation plate; the lower pressure sensor and the lower piezoelectric sensor are located below the heat insulation plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. In the energy storage process, the system can store thermal energy or cold energy in the form of hot water or cold water in the heat storage tank, and separate the hot water and cold water by moving the heat insulation plate, eliminating the heat transfer caused by the presence of the thermocline, and further improving the energy utilization efficiency.

[0016] 2. This utility model meets the requirements of the "dual carbon" strategy, can meet the needs of users during the cooling and heating seasons, and improves energy utilization and system economy. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of Embodiment 1 of this utility model.

[0018] Figure 2 This is a structural schematic diagram of Embodiment 2 of this utility model.

[0019] Figure 3 This is a schematic diagram of the internal structure of the water distributor in the thermal storage tank of this utility model.

[0020] Figure 4 This is a schematic diagram of the heat insulation plate in this utility model.

[0021] Figure 5 This is a schematic diagram of the sensor part in Example 2 of this utility model.

[0022] In the diagram: 1-Tank body, 2-Insulation layer, 3-Insulation board, 4-Sealing ring, 5-Upper pressure sensor, 6-Lower pressure sensor, 7-Upper piezoelectric sensor, 8-Lower piezoelectric sensor, 9-Screw, 10-Motor, 11-Upper water distributor, 12-Lower water distributor, 13-Hot water inlet / outlet, 14-Cold water inlet / outlet, 15-Control system, 16-Valve plate, 17-Valve plate shaft, 18-Sensor wiring, 301-Insulation board shell, 302-Insulation material. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1

[0025] Please see Figure 1-5 In this embodiment of the utility model, a single-phase medium heat storage tank is provided; including a tank body 1; the tank body 1 is provided with a heat insulation plate 3; the heat insulation plate 3 includes a heat insulation plate shell 301 and a heat insulation material 302, wherein an upper pressure sensor 5 and a lower pressure sensor 6 are respectively provided on the upper and lower sides of one end of the heat insulation plate 3.

[0026] The tank body 1 is provided with an upper water distributor 11 on the top inner side; the upper water distributor 11 is connected to the hot water inlet and outlet 13; the tank body 1 is provided with a lower water distributor 12 at the bottom; one end of the lower water distributor 12 is connected to the cold water inlet and outlet 14.

[0027] During the thermal storage process, low-temperature hot water is discharged from the cold water inlet / outlet 14 through the lower water distributor 12 into the heating device for heating. Then, high-temperature hot water enters through the upper water distributor 11 from the hot water inlet / outlet 13. As high-temperature hot water enters and low-temperature hot water is discharged, the pressure difference between the upper pressure sensor 5 and the lower pressure sensor 6 exceeds the set value. The control system 15 controls the motor 10 to start, and the insulation plate 3 begins to move from top to bottom. When thermal storage is complete, the high-temperature hot water stops entering, the pressure difference is lower than the set value, the control system 15 controls the motor 10 to stop rotating, and the insulation plate stops moving.

[0028] The upper pressure sensor 5 and lower pressure sensor 6 are electrically connected to the control system 15 via sensor wiring 18;

[0029] The outer wall of the tank 1 is provided with a heat insulation layer 2; the hot water inlet / outlet 13 and the cold water inlet / outlet 14 both penetrate the heat insulation layer 2;

[0030] During the heat release process, high-temperature hot water is discharged from the hot water inlet and outlet 13 through the upper water distributor 11 to the heat user side for heat release. Then, after the high-temperature hot water releases heat, it becomes low-temperature hot water and enters through the lower water distributor 12 from the cold water inlet and outlet 14. As the high-temperature hot water is discharged and the low-temperature hot water enters, the pressure difference between the lower pressure sensor 6 and the upper pressure sensor 5 exceeds the set value. The control system 15 controls the motor 10 to start, and the heat insulation plate 3 begins to move from bottom to top. When the heat release is completed, the high-temperature hot water stops being discharged, the pressure difference is lower than the set value, the control system 15 controls the motor 10 to stop rotating, and the heat insulation plate 3 stops moving.

[0031] The tank body 1 is also equipped with a lead screw 9; one end of the lead screw 9 is fixedly installed with a motor 10; the motor 10 is fixedly installed on the top of the tank body 1; the motor 10 is electrically connected to the control system 15 through a wire; the lead screw 9 is threadedly connected to the heat insulation plate 3.

[0032] During the cold storage process, high-temperature cold water is discharged from the hot water inlet / outlet 13 through the upper water distributor 11 into the refrigeration unit for cooling. Then, low-temperature cold water enters through the cold water inlet / outlet 14 and the lower water distributor 12. As low-temperature cold water enters and high-temperature cold water is discharged, the pressure difference between the lower pressure sensor 6 and the upper pressure sensor 5 exceeds the set value. The control system 15 controls the motor 10 to start, and the heat insulation plate 3 begins to move from bottom to top. When the cold storage is completed, the low-temperature cold water stops entering, the pressure difference is lower than the set value, the control system 15 controls the motor 10 to stop rotating, and the heat insulation plate 3 stops moving.

[0033] The upper pressure sensor 5 is located above the heat insulation plate 3; the lower pressure sensor 6 is located below the heat insulation plate 3.

[0034] During the cooling process, low-temperature hot water is discharged from the cold water inlet / outlet 14 through the lower water distributor 12 into the heating device for heating. Then, high-temperature hot water enters through the upper water distributor 11 from the hot water inlet / outlet 13. As high-temperature cold water enters and low-temperature cold water is discharged, the pressure difference between the upper pressure sensor 5 and the lower pressure sensor 6 exceeds the set value. The control system 15 controls the motor 10 to start, and the heat insulation plate 3 begins to move from top to bottom. When the cooling is completed, the low-temperature cold water stops being discharged, the pressure difference is lower than the set value, the control system 15 controls the motor 10 to stop rotating, and the heat insulation plate 3 stops moving.

[0035] Example 2

[0036] Please see Figure 2-5 In this embodiment of the utility model, a single-phase medium heat storage tank is provided; an upper piezoelectric sensor 7 and a lower piezoelectric sensor 8 are provided inside the heat insulation plate 3; a valve plate 16 is provided on one side of the lower piezoelectric sensor 8; one end of the valve plate 16 is movably installed with a valve plate shaft 17; a sealing ring 4 is provided on the side of the heat insulation plate 3.

[0037] During the heat storage process, low-temperature hot water is discharged from the cold water inlet / outlet 14 through the lower water distributor 12 into the heating device for heating. Then, high-temperature hot water enters through the upper water distributor 11 from the hot water inlet / outlet 13. As high-temperature hot water enters and low-temperature hot water is discharged, the valve plate rotates on the shaft 17 to contact and press the piezoelectric sensor 8. When the pressure value exceeds the set value, the control system 15 controls the motor 10 to start, and the heat insulation plate 3 begins to move from top to bottom. When the heat storage is completed, the high-temperature hot water stops entering, the pressure is lower than the set value, the control system 15 controls the motor 10 to stop rotating, and the heat insulation plate 3 stops moving.

[0038] The upper piezoelectric sensor 7 and the lower piezoelectric sensor 8 are electrically connected to the control system 15 via sensor wiring 18;

[0039] The outer wall of the tank 1 is provided with a heat insulation layer 2; the hot water inlet / outlet 13 and the cold water inlet / outlet 14 both penetrate the heat insulation layer 2;

[0040] During the heat release process, high-temperature hot water is discharged from the hot water inlet and outlet 13 through the upper water distributor 11 to the heat user side for heat release. Then, after the high-temperature hot water releases heat, it becomes low-temperature hot water and enters through the lower water distributor 12 from the cold water inlet and outlet 14. As the high-temperature hot water is discharged and the low-temperature hot water enters, the upper valve plate is rotated by the shaft 17 to contact and press the upper piezoelectric sensor 7. When the pressure value exceeds the set value, the control system 15 controls the motor 10 to start, and the heat insulation plate 3 begins to move from bottom to top. When the heat release is completed, the high-temperature hot water stops being discharged, and the pressure value is lower than the set value. The control system 15 controls the motor 10 to stop rotating, and the heat insulation plate 3 stops moving.

[0041] The tank body 1 is also equipped with a lead screw 9; one end of the lead screw 9 is fixedly installed with a motor 10; the motor 10 is fixedly installed on the top of the tank body 1; the motor 10 is electrically connected to the control system 15 through a wire; the lead screw 9 is threadedly connected to the heat insulation plate 3.

[0042] During the cold storage process, high-temperature chilled water is discharged from the hot water inlet / outlet 13 through the upper water distributor 11 into the refrigeration unit for cooling. Then, low-temperature chilled water enters through the lower water distributor 12 from the chilled water inlet / outlet 14. As low-temperature chilled water enters and high-temperature chilled water exits, the upper valve plate rotates on the shaft 17 to contact and press the upper piezoelectric sensor 7. When the pressure value exceeds the set value, the control system 15 controls the motor 10 to start, and the heat insulation plate 3 begins to move from bottom to top. When the cold storage is complete, the low-temperature chilled water stops entering, the pressure difference is lower than the set value, the control system 15 controls the motor 10 to stop rotating, and the heat insulation plate 3 stops moving.

[0043] The upper piezoelectric sensors 7 are all located above the heat insulation plate 3; the lower piezoelectric sensors 8 are located below the heat insulation plate 3.

[0044] During the cooling process, low-temperature hot water is discharged from the cold water inlet / outlet 14 through the lower water distributor 12 into the heating device for heating. Then, high-temperature hot water enters through the upper water distributor 11 from the hot water inlet / outlet 13. As high-temperature cold water enters and low-temperature cold water is discharged, the valve plate rotates on the shaft 17 to contact and press the piezoelectric sensor 8. When the pressure value exceeds the set value, the control system 15 controls the motor 10 to start, and the heat insulation plate 3 begins to move from top to bottom. When the cooling is completed, the low-temperature cold water stops being discharged, the pressure value is lower than the set value, the control system 15 controls the motor 10 to stop rotating, and the heat insulation plate 3 stops moving.

[0045] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0046] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A single-phase medium thermal storage tank, characterized in that: Includes a tank body (1); the tank body (1) is provided with a heat insulation plate (3); the heat insulation plate (3) includes a heat insulation plate shell (301) and heat insulation material (302), wherein an upper pressure sensor (5) and a lower pressure sensor (6) are respectively provided on the upper and lower sides of the heat insulation plate (3); The tank body (1) is provided with an upper water distributor (11) on the top of its inner side; the upper water distributor (11) is connected to the hot water inlet and outlet (13); the tank body (1) is provided with a lower water distributor (12) at the bottom; one end of the lower water distributor (12) is connected to the cold water inlet and outlet (14).

2. The single-phase medium thermal storage tank according to claim 1, characterized in that: An upper piezoelectric sensor (7) and a lower piezoelectric sensor (8) are provided at one end of the heat insulation plate (3); a valve plate (16) is provided between the upper piezoelectric sensor (7) and the lower piezoelectric sensor (8); a sealing ring (4) is provided on the edge of the heat insulation plate (3); the sealing ring (4) is arranged in a ring shape.

3. A single-phase medium thermal storage tank according to claim 1, characterized in that: The upper pressure sensor (5), lower pressure sensor (6), upper piezoelectric sensor (7) and lower piezoelectric sensor (8) are electrically connected to the control system (15) through sensor wiring (18).

4. A single-phase medium thermal storage tank according to claim 3, characterized in that: The outer wall of the tank (1) is provided with a heat insulation layer (2); the hot water inlet and outlet (13) and the cold water inlet and outlet (14) both penetrate the heat insulation layer (2).

5. A single-phase medium thermal storage tank according to claim 4, characterized in that: The tank body (1) is also equipped with a lead screw (9); one end of the lead screw (9) is fixedly installed with a motor (10); the motor (10) is fixedly installed on the top of the tank body (1); the motor (10) is electrically connected to the control system (15) through a wire; the lead screw (9) is threadedly connected to the heat insulation plate (3).

6. A single-phase medium thermal storage tank according to claim 4, characterized in that: The upper pressure sensor (5) and the upper piezoelectric sensor (7) are both located above the heat insulation plate (3); the lower pressure sensor (6) and the lower piezoelectric sensor (8) are located below the heat insulation plate (3).

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