Refrigeration storage device for peak valley electricity

Abstract

The utility model relates to the technical field of refrigeration storage, and discloses a refrigeration storage device for peak-valley electricity, which comprises a mounting frame, an outer tank body is fixedly mounted in the mounting frame, a first storage tank is fixedly mounted in the outer tank body, and a second storage tank is fixedly mounted in the first storage tank. Inner cavities of the first storage tank and the second storage tank are filled with phase change cold storage materials, a first exchange pipe is fixedly installed in the first storage tank, and a second exchange pipe is fixedly installed in the second storage tank. According to the refrigeration storage device, the first storage tank and the second storage tank which are arranged in the outer tank body in a sleeved mode are arranged in the outer tank body, the first storage tank can serve as a protective layer of the second storage tank to block external high temperature and absorb inner side cold energy, and the first exchange pipe and the second exchange pipe are arranged in the first storage tank and the second storage tank correspondingly; cold energy stored in the first storage tank can be preferentially used through the first exchange pipe, cold energy flow rate loss is reduced, and the energy utilization rate is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration storage, in particular to a refrigeration storage device for peak and valley electricity. Background Art

[0002] With the acceleration of the process of modernization, energy consumption continues to grow at a high speed. Utilizing the electric energy storage of the peak-valley load difference of the power grid can not only make full use of power resources, but also reduce the capacity and distribution capacity of refrigeration equipment, and improve energy utilization. The patent document with the prior art announcement number CN219995619U discloses a refrigeration device for peak-valley electricity, including a cold storage box and a refrigeration unit. Two groups of brackets are installed in sequence from top to bottom inside the cold storage box, and a number of vertically arranged and evenly distributed cold storage tubes are fixedly installed between the two groups of brackets. The cold storage box is filled with a cold storage medium. The utility model uses the low-priced off-peak electricity to power the refrigeration unit, so that the refrigerant flows through the flow cavity for heat exchange, the inner cold storage tube transfers the cold to the internal phase-change cold storage material, and the outer cold storage tube transfers the cold to the external cold storage medium. The phase-change cold storage material and the cold storage medium are quickly charged with cold, and the low-priced electricity at night is used for charging cold, which reduces the refrigeration cost. The cold storage box can be connected to the central air-conditioning fan coil to release cold during the peak electricity consumption in the daytime, adjust the peak and valley electricity load difference, and reasonably use the peak and valley electricity to achieve energy saving and rational energy utilization, and reduce electricity costs.

[0003] In actual application, as in the above-mentioned solution, the cold storage material is stored in the cold storage box through multiple cold storage inner tubes. The cold storage inner tubes are connected in parallel and share the input and output main pipes. Since the cold energy of the outer cold storage inner tubes is lost quickly, when using their cold energy, the existing refrigeration storage device has the problem of inconvenience in giving priority to the cold energy from the outside, which brings inconvenience to use and needs further improvement. Summary of the Invention

[0004] The purpose of the present invention is to provide a refrigeration storage device for peak and valley electricity to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a refrigeration storage device for peak and valley electricity, comprising a mounting frame, an outer tank body fixedly mounted inside the mounting frame, a first storage tank fixedly mounted inside the outer tank body, a second storage tank fixedly mounted inside the first storage tank, the inner cavities of the first storage tank and the second storage tank both filled with phase change cold storage material, a first exchange tube fixedly mounted inside the first storage tank, and a second exchange tube fixedly mounted inside the second storage tank;

[0006] An input pipe and an output pipe are respectively provided on the outside of the outer tank body. Two first parallel solenoid valves are fixedly installed at the end of the input pipe, and two second parallel solenoid valves are fixedly installed at the end of the output pipe. One end of the first exchange tube is connected to the input pipe through the first solenoid valve, and the other end of the first exchange tube is connected to the output pipe through the second solenoid valve. One end of the second exchange tube is connected to the input pipe through the first solenoid valve, and the other end of the second exchange tube is connected to the output pipe through the second solenoid valve. The first storage tank can serve as a protective layer for the second storage tank, blocking the high temperature outside, absorbing the cold energy inside, and reducing the loss of cold energy flow rate.

[0007] In some embodiments, the first exchange tube and the second exchange tube are both spirally shaped, and the first exchange tube is spirally wound around the outside of the second storage tank. The first exchange tube can be used to preferentially access the cold energy stored in the first storage tank.

[0008] In some embodiments, a first exhaust pipe and a second exhaust pipe are fixedly installed on the upper side of the outer tank body, respectively, the bottom end of the first exhaust pipe is connected to the inner cavity of the first storage tank, the bottom end of the second exhaust pipe extends into the first storage tank and is connected to the inner cavity of the second storage tank, and an emptying pipe is fixedly installed on the lower surface of the outer tank body, the emptying pipe is connected to the inner cavity of the first storage tank, and a connecting port is opened on the lower side of the second storage tank, and the second storage tank is connected to the inner cavity of the first storage tank through the connecting port. The phase change cold storage material in the tank can be replaced or refilled through the emptying pipe.

[0009] In some embodiments, a plurality of first support blocks are fixedly installed between the inner wall of the outer tank body and the outer surface of the first storage tank. The plurality of first support blocks are arranged in a ring array around the first storage tank. The inner wall of the outer tank body and the outer surface of the first storage tank form a vacuum chamber, which can achieve excellent heat insulation and energy storage effects.

[0010] In some embodiments, a plurality of second support blocks are fixedly installed between the inner wall of the first storage tank and the outer surface of the second storage tank. The plurality of second support blocks are arranged in a ring array around the second storage tank, and an annular cavity for containing the phase change cold storage material is formed between the inner wall of the first storage tank and the outer surface of the second storage tank.

[0011] In some embodiments, two control valves and a flow meter are fixedly mounted on the surface of the input pipe. Beneficial effects

[0012] The utility model provides a refrigeration storage device for peak and valley electricity, which has the following beneficial effects:

[0013] 1. This refrigeration storage device for peak-valley electricity utilizes a first storage tank and a second storage tank nested within an outer tank. The first storage tank acts as a protective layer for the second storage tank, shielding it from external high temperatures and absorbing internal cold energy. First and second exchange tubes are located in the first and second storage tanks, respectively. The first exchange tube prioritizes the use of cold energy stored in the first storage tank, reducing cold energy flow rate loss and improving energy utilization.

[0014] 2. This refrigeration storage device for peak-valley electricity utilizes a first solenoid valve and a second solenoid valve installed at each end of the outer tank. These valves can be opened and closed, respectively, allowing the first and second exchange tubes to share the same input and output pipes, simplifying the piping path. Furthermore, a vacuum chamber is provided between the outer tank and the first storage tank, achieving excellent thermal insulation and energy storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model (1);

[0016] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model (II);

[0017] Figure 3 This is a schematic diagram of the front cross-section structure of the utility model;

[0018] Figure 4 It is a schematic diagram of the side section structure of the outer tank.

[0019] In the figure: 1 mounting frame, 2 outer tank body, 3 first storage tank, 4 second storage tank, 5 first exchange tube, 6 second exchange tube, 7 input tube, 8 output tube, 9 first solenoid valve, 10 second solenoid valve, 11 drain pipe, 12 connecting port, 13 first support block, 14 second support block, 15 control valve, 16 flow meter, 17 first exhaust pipe, 18 second exhaust pipe. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1-4The utility model provides a technical solution: a refrigeration storage device for peak and valley electricity, comprising a mounting frame 1, an outer tank body 2 is fixedly installed inside the mounting frame 1, a first storage tank 3 is fixedly installed inside the outer tank body 2, a second storage tank 4 is fixedly installed inside the first storage tank 3, and the inner cavities of the first storage tank 3 and the second storage tank 4 are both filled with phase change cold storage material.

[0022] Specifically, a plurality of first support blocks 13 are fixedly installed between the inner wall of the outer tank body 2 and the outer surface of the first storage tank 3, and the plurality of first support blocks 13 are arranged in a ring array around the first storage tank 3. The inner wall of the outer tank body 2 and the outer surface of the first storage tank 3 form a vacuum chamber. A plurality of second support blocks 14 are fixedly installed between the inner wall of the first storage tank 3 and the outer surface of the second storage tank 4. The plurality of second support blocks 14 are arranged in a ring array around the second storage tank 4. An annular cavity for containing phase change cold storage material is formed between the inner wall of the first storage tank 3 and the outer surface of the second storage tank 4. By setting a vacuum chamber between the outer tank body 2 and the first storage tank 3, excellent heat insulation and energy storage effects can be achieved.

[0023] A first exchange tube 5 is fixedly installed in the first storage tank 3 , and a second exchange tube 6 is fixedly installed in the second storage tank 4 . Both the first exchange tube 5 and the second exchange tube 6 are spirally shaped, and the first exchange tube 5 is spirally wound around the outside of the second storage tank 4 .

[0024] An input pipe 7 and an output pipe 8 are respectively provided on the outside of the outer tank body 2 , and two control valves 15 and a flow meter 16 are respectively fixedly mounted on the surface of the input pipe 7 .

[0025] Two parallel first solenoid valves 9 are fixedly installed at the end of the input pipe 7, and two parallel second solenoid valves 10 are fixedly installed at the end of the output pipe 8. One end of the first exchange pipe 5 is connected to the input pipe 7 through the first solenoid valve 9, and the other end of the first exchange pipe 5 is connected to the output pipe 8 through the second solenoid valve 10. One end of the second exchange pipe 6 is connected to the input pipe 7 through the first solenoid valve 9, and the other end of the second exchange pipe 6 is connected to the output pipe 8 through the second solenoid valve 10.

[0026] By arranging the first electromagnetic valve 9 and the second electromagnetic valve 10 at both ends of the outer tank body 2, the first electromagnetic valve 9 and the second electromagnetic valve 10 can be respectively opened and closed, so that the first exchange tube 5 and the second exchange tube 6 share the same input tube 7 and output tube 8, thereby simplifying the pipeline path.

[0027] A first exhaust pipe 17 and a second exhaust pipe 18 are fixedly installed on the upper side of the outer tank body 2. The bottom end of the first exhaust pipe 17 is connected to the inner cavity of the first storage tank 3. The bottom end of the second exhaust pipe 18 extends into the first storage tank 3 and is connected to the inner cavity of the second storage tank 4.

[0028] An emptying pipe 11 is fixedly installed on the lower surface of the outer tank body 2, and the emptying pipe 11 is connected to the inner cavity of the first storage tank 3. A connecting port 12 is opened on the lower side of the second storage tank 4. The second storage tank 4 is connected to the inner cavity of the first storage tank 3 through the connecting port 12. The internal phase change cold storage material can be discharged through the emptying pipe 11, or the phase change cold storage material can be added to the first storage tank 3 and the second storage tank 4.

[0029] Working principle: During the off-peak period of electricity consumption, the refrigeration unit transports the cooling medium from the input pipe 7 to the first exchange pipe 5 and the second exchange pipe 6. The phase change cold storage material in the first storage tank 3 and the second storage tank 4 absorbs the cold energy and stores it. When the electricity consumption reaches the peak period, Figure 3 As shown, the first electromagnetic valve 9 and the second electromagnetic valve 10 on the lower side are opened, so that the input pipe 7 and the output pipe 8 are connected to the first exchange pipe 5, and the cooling medium is transported to the first exchange pipe 5 again. The cooling medium absorbs the cold energy in the first storage tank 3 and is utilized. Subsequently, the first electromagnetic valve 9 and the second electromagnetic valve 10 on the lower side are closed, and the first electromagnetic valve 9 and the second electromagnetic valve 10 on the lower side are opened, so that the input pipe 7 and the output pipe 8 are connected to the second exchange pipe 6, and the cooling medium can be used to take the cold energy in the second storage tank 4.

[0030] The refrigeration storage device for peak-valley electricity is provided with a first storage tank 3 and a second storage tank 4 in a set within an outer tank body 2. The first storage tank 3 can serve as a protective layer for the second storage tank 4, blocking the external high temperature and absorbing the internal cold energy. The first exchange tube 5 and the second exchange tube 6 are respectively provided in the first storage tank 3 and the second storage tank 4. The first exchange tube 5 can be used to preferentially access the cold energy stored in the first storage tank 3, thereby reducing the cold energy flow rate loss and improving energy utilization.

[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A refrigeration storage device for peak and valley electricity, comprising a mounting frame (1), characterized in that: The outer tank body (2) is fixedly mounted inside the mounting frame (1), the first storage tank (3) is fixedly mounted inside the outer tank body (2), the second storage tank (4) is fixedly mounted inside the first storage tank (3), the inner cavities of the first storage tank (3) and the second storage tank (4) are both filled with phase-change cold storage material, the first storage tank (3) is fixedly mounted with a first exchange tube (5), and the second storage tank (4) is fixedly mounted with a second exchange tube (6); An input pipe (7) and an output pipe (8) are respectively provided on the outside of the outer tank body (2). Two first electromagnetic valves (9) connected in parallel are fixedly installed at the end of the input pipe (7), and two second electromagnetic valves (10) connected in parallel are fixedly installed at the end of the output pipe (8). One end of the first exchange pipe (5) is connected to the input pipe (7) through the first electromagnetic valve (9), and the other end of the first exchange pipe (5) is connected to the output pipe (8) through the second electromagnetic valve (10). One end of the second exchange pipe (6) is connected to the input pipe (7) through the first electromagnetic valve (9), and the other end of the second exchange pipe (6) is connected to the output pipe (8) through the second electromagnetic valve (10).

2. The refrigeration storage device for peak and valley electricity according to claim 1, characterized in that: The first exchange tube (5) and the second exchange tube (6) are both spiral-shaped, and the first exchange tube (5) is spirally wound on the outside of the second storage tank (4).

3. The refrigeration storage device for peak and valley electricity according to claim 2, characterized in that: A first exhaust pipe (17) and a second exhaust pipe (18) are fixedly mounted on the upper side of the outer tank body (2), respectively. The bottom end of the first exhaust pipe (17) is communicated with the inner cavity of the first storage tank (3), and the bottom end of the second exhaust pipe (18) extends into the first storage tank (3) and is communicated with the inner cavity of the second storage tank (4).

4. The refrigeration storage device for peak and valley electricity according to claim 3, characterized in that: An emptying pipe (11) is fixedly mounted on the lower surface of the outer tank body (2), and the emptying pipe (11) is communicated with the inner cavity of the first storage tank (3). A communication port (12) is provided on the lower side of the second storage tank (4), and the second storage tank (4) is communicated with the inner cavity of the first storage tank (3) through the communication port (12).

5. The refrigeration storage device for peak and valley electricity according to claim 4, characterized in that: A plurality of first support blocks (13) are fixedly mounted between the inner wall of the outer tank body (2) and the outer surface of the first storage tank (3). The plurality of first support blocks (13) are arranged in a ring-shaped array around the first storage tank (3). The inner wall of the outer tank body (2) and the outer surface of the first storage tank (3) form a vacuum chamber.

6. The refrigeration storage device for peak and valley electricity according to claim 5, characterized in that: A plurality of second support blocks (14) are fixedly mounted between the inner wall of the first storage tank (3) and the outer surface of the second storage tank (4), and the plurality of second support blocks (14) are arranged in a ring array around the second storage tank (4). An annular cavity for containing the phase-change cold storage material is formed between the inner wall of the first storage tank (3) and the outer surface of the second storage tank (4).

7. A refrigeration storage device for peak-valley electricity according to any one of claims 1 to 6, characterized in that: Two control valves (15) and a flow meter (16) are fixedly mounted on the surface of the input pipe (7).

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