Phase change energy storage device for solar energy-ground source heat pump heating system

Abstract

The utility model discloses a phase change energy storage device for a solar energy-ground source heat pump heating system, and belongs to the technical field of energy storage devices. According to the partial structure of the device, a straight pipe section penetrates through an inserting hole and is fixed to a connecting plate, an arc strip is located on the lower edge of the connecting plate, a plurality of mounting holes are formed in the arc strip, blocking strips are fixed to the side ends of the arc strip, a plurality of supporting strips are connected between the blocking strips on the two sides of the arc strip, round holes are formed in the supporting strips, and connecting rods penetrate through the round holes and are fixed to the supporting strips. The end part of the connecting rod is fixed on the mounting hole, the cambered surface reflecting plate is positioned on the plurality of supporting strips, and the straight pipe section is positioned above the cambered surface reflecting plate. According to the device, the cambered-surface reflecting plate is mounted outside the metal pipe, heat is absorbed in the pipe when the material flows at a low speed, and the purpose of energy storage is achieved. Heat energy is directly utilized and does not need to be converted into electric energy and then stored, so that the energy conversion rate is higher; and the device is flexible in structure and relatively low in equipment cost and operation cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of energy storage devices, in particular to a phase change energy storage device for a solar energy-ground source heat pump heating system. Background Art

[0002] Energy storage refers to the process of storing energy through a medium or device and releasing it when needed. According to the energy storage method, energy storage can be divided into three categories: physical energy storage, chemical energy storage, and electromagnetic energy storage. Physical energy storage mainly includes pumped storage, compressed air energy storage, flywheel energy storage, etc. Chemical energy storage mainly includes lead-acid batteries, lithium-ion batteries, sodium-sulfur batteries, flow batteries, etc. Electromagnetic energy storage mainly includes supercapacitor energy storage and superconducting energy storage.

[0003] Thermal energy storage is a technology that stores various forms of energy through thermodynamic equipment. Thermal energy storage can be divided into sensible heat storage, latent heat storage and chemical reaction heat storage according to the heat storage method. Among them, latent heat storage, also known as phase change energy storage, is a technology that uses the absorption or release of latent heat of phase change during the phase change process of a substance to store and release energy. The energy storage density of latent heat storage is high, and in the process of energy storage and release, the material absorbs and releases a large amount of heat when the phase change occurs, but the temperature is approximately constant, so it is easy to manage and the installation is simple. Common latent heat storage methods include ice storage, steam storage, phase change material storage, etc. Solar energy is an ideal source of energy, and it can be directly expressed in the form of heat. Relying on the high heat capacity characteristics of phase change materials, it is expected to become the basis for large-scale energy storage equipment. In recent years, such energy storage units have been used in pilot projects in solar-ground source heat pump heating systems. However, their capture mode is generally to convert solar energy into electricity first and then into heat. Although the storage of electricity is relatively clean and will not be lost, the overall energy conversion rate is low, and its advantages are difficult to reflect in heating systems that require continuous heat supply. Summary of the invention

[0004] The technical problem to be solved by the utility model is: how to improve the energy conversion rate of the phase change energy storage device.

[0005] In order to achieve the above technical objectives, the utility model adopts the following technical solutions:

[0006] A phase change energy storage device for a solar-ground source heat pump heating system comprises a bracket, a column, a bottom plate, a metal return pipe, a pump body, a control valve, a straight pipe section, a connecting plate, a jack, an arc bar, a mounting hole, a baffle bar, a support bar, a round hole, a connecting rod, and a curved reflector plate; the column is located at the bottom of the bracket, a plurality of columns are arranged and are parallel to each other, a bottom plate is arranged at the bottom end of the column, the bottom plate is fixed on the ground surface, a metal return pipe is fixed on the bracket, the metal return pipe is connected to the pump body, and a control valve is arranged on the metal return pipe A plurality of straight pipe sections are provided on the metal return tube, a socket is arranged on the upper side of the connecting plate, the straight pipe section passes through the socket and is fixed to the connecting plate, the arc bar is located at the lower edge of the connecting plate, a plurality of mounting holes are provided on the arc bar, a baffle is fixed to the side end of the arc bar, a plurality of support bars are connected between the baffles on both sides of the arc bar, a circular hole is provided on the support bar, a connecting rod passes through the circular hole and is fixed to the support bar, an end of the connecting rod is fixed to the mounting hole, a curved reflector is located on the plurality of support bars, and the straight pipe section is located above the curved reflector.

[0007] Preferably, liquid-gas phase change material flows in the metal return tube, and the flow is driven by a pump body.

[0008] Preferably, the metal return tube comprises a plurality of straight tube sections and a plurality of C-shaped tubes, the C-shaped tubes and the straight tube sections are arranged at intervals, and two straight tube sections adjacent to the C-shaped tube are connected to both ends of the C-shaped tube through a flange structure.

[0009] Preferably, the top surface of the curved reflector is a mirror surface.

[0010] Preferably, there are multiple connecting rods, and the multiple connecting rods are parallel to each other.

[0011] Preferably, temperature sensors and flow meters are provided at both ends of the metal return tube.

[0012] Preferably, the bracket is in a square frame shape, a support is provided at the top end of the frame of the bracket, and the metal return tube is fixedly mounted on the support.

[0013] At the device structure level, the bracket is a large support frame on the lower side of the device. The column is in direct contact with the ground surface, and the bottom plate can be used as a fulcrum, which is convenient for fixing to the ground surface using screws and other components. The metal return tube forms multiple parallel straight pipe sections, so that multiple straight pipe sections are concentrated above the bracket. The connecting plate is maintained on both sides of the curved reflector and the straight pipe section, and the curved reflector is maintained below the straight pipe section. The reflection effect of its top surface is used to concentrate the sunlight on the straight pipe section, so that the liquid-gas phase change material inside is heated and absorbs energy during the flow along the metal return tube. The pump body provides power for this flow effect, and the control valve can control the opening, closing or opening size of the flow channel. The jack on the connecting plate is passed through by the straight pipe section, which is convenient for fixing the connecting plate to the straight pipe section. The arc bar is used to install the baffle bar, and the baffle bars on both sides are used to install multiple support bars, which support the curved reflector on its upper side. The circular holes on the support bars and the mounting holes on the arc bars are used to fix the connecting rods, and the connecting rods connect the multiple support bars and the arc bars into one, thereby ensuring the stability of the structure.

[0014] The utility model discloses a phase change energy storage device for a solar-ground source heat pump heating system. The device installs a curved reflector plate on the outside of a metal pipe with good thermal conductivity, and absorbs heat in the process of the material flowing at a lower speed in the pipe to achieve the purpose of energy storage. The utility model directly utilizes thermal energy without converting it into electrical energy before storing it, so the energy conversion rate is higher; and the device has a flexible structure, and the equipment cost and operation cost are relatively low. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the first overall image of the installation;

[0016] Figure 2 It is a structural diagram of the upper side of components such as straight pipe sections, connecting plates, and curved reflective plates;

[0017] Figure 3 It is a structural diagram of the lower side of components such as straight pipe sections, connecting plates, and curved reflective plates;

[0018] Figure 4 It is a structural diagram of the connecting plate;

[0019] Figure 5 It is a structural diagram of the curved reflector;

[0020] Figure 6 It is the second overall picture of the installation;

[0021] in:

[0022] 1. Bracket 2. Column 3. Bottom plate 4. Metal return tube

[0023] 5. Pump body 6. Control valve 7. Straight pipe section 8. Connecting plate

[0024] 9. Socket 10. Arc bar 11. Mounting hole 12. Stop bar

[0025] 13, support bar 14, round hole 15, connecting rod 16, curved reflector. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. In addition, ordinary technicians in this field know that with the development of technology and the emergence of new scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0027] In the description of the present application, it should be understood that, unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as those commonly understood by those skilled in the art of the present application. In addition, any terminology used is only for the purpose of describing specific embodiments and is not intended to limit the present application.

[0028] In addition, in order to better illustrate the present application, numerous specific details are given in the following specific embodiments. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods, means, components and circuits well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.

[0029] Example 1

[0030] A phase change energy storage device for solar-ground source heat pump heating system, see Figures 1 to 6, including a bracket 1, a column 2, a bottom plate 3, a metal return tube 4, a pump body 5, a control valve 6, a straight pipe section 7, a connecting plate 8, a jack 9, an arc bar 10, a mounting hole 11, a baffle 12, a support bar 13, a round hole 14, a connecting rod 15, and a curved reflector 16; the column 2 is located at the bottom of the bracket 1, a plurality of columns 2 are arranged and are parallel to each other, a bottom plate 3 is provided at the bottom end of the column 2, the bottom plate 3 is fixed on the ground, a metal return tube 4 is fixed on the bracket 1, the metal return tube 4 is connected to the pump body 5, a control valve 6 is provided on the metal return tube 4, and a plurality of straight pipe sections 7 are provided on the metal return tube 4 , the socket 9 is arranged on the upper side of the connecting plate 8, the straight pipe section 7 passes through the socket 9 and is fixed to the connecting plate 8, the arc bar 10 is located at the lower edge of the connecting plate 8, a plurality of mounting holes 11 are arranged on the arc bar 10, the retaining bar 12 is fixed to the side end of the arc bar 10, a plurality of support bars 13 are connected between the retaining bars 12 on both sides of the arc bar 10, a circular hole 14 is arranged on the support bar 13, a connecting rod 15 passes through the circular hole 14 and is fixed to the support bar 13, the end of the connecting rod 15 is fixed on the mounting hole 11, the arc reflection plate 16 is located on the plurality of support bars 13, and the straight pipe section 7 is located above the arc reflection plate 16. The bracket 1 is a large supporting frame on the lower side of the device. The column 2 is in direct contact with the ground surface, and the bottom plate 3 can be used as a fulcrum, which is convenient for fixing to the ground surface by means of screws and other components. The metal return tube 4 forms a plurality of parallel straight pipe sections 7, so that the plurality of straight pipe sections 7 are concentrated and maintained above the bracket 1. The connecting plate 8 is kept on both sides of the curved reflector plate 16 and the straight pipe section 7. The curved reflector plate 16 is kept below the straight pipe section 7. The reflective effect of its top surface is used to concentrate sunlight on the straight pipe section 7, so that the liquid-gas phase change material inside is heated and absorbs energy during the flow along the metal return tube 4. The pump body 5 provides power for this flow effect, and the control valve 6 can control the opening, closing or opening size of the flow channel. The plug hole 9 on the connecting plate 8 is passed through by the straight pipe section 7, which is convenient for fixing the connecting plate 8 with the straight pipe section 7. The arc bar 10 is used to install the baffle 12, and the baffles 12 on both sides are used to install the multi-channel support bars 13. The support bars 13 play a supporting role on the curved reflector plate 16 on its upper side. The circular hole 14 on the support bar 13 and the mounting hole 11 on the arc bar 10 are used to fix the connecting rod 15. The connecting rod 15 connects the multi-channel support bars 13 and the arc bar 10 into one body to ensure the stability of the structure.

[0031] Example 2

[0032] A phase change energy storage device for solar-ground source heat pump heating system, see Figures 1 to 6, including a bracket 1, a column 2, a bottom plate 3, a metal return tube 4, a pump body 5, a control valve 6, a straight pipe section 7, a connecting plate 8, a jack 9, an arc bar 10, a mounting hole 11, a baffle 12, a support bar 13, a round hole 14, a connecting rod 15, and a curved reflector 16; the column 2 is located at the bottom of the bracket 1, a plurality of columns 2 are arranged and are parallel to each other, a bottom plate 3 is provided at the bottom end of the column 2, the bottom plate 3 is fixed on the ground, a metal return tube 4 is fixed on the bracket 1, the metal return tube 4 is connected to the pump body 5, a control valve 6 is provided on the metal return tube 4, and a plurality of straight pipe sections 7 are provided on the metal return tube 4 , the plug hole 9 is arranged on the upper side of the connecting plate 8, the straight pipe section 7 passes through the plug hole 9 and is fixed to the connecting plate 8, the arc bar 10 is located at the lower edge of the connecting plate 8, a plurality of mounting holes 11 are arranged on the arc bar 10, the baffle 12 is fixed to the side end of the arc bar 10, a plurality of support bars 13 are connected between the baffles 12 on both sides of the arc bar 10, a circular hole 14 is arranged on the support bar 13, a connecting rod 15 passes through the circular hole 14 and is fixed to the support bar 13, the end of the connecting rod 15 is fixed on the mounting hole 11, the arc reflection plate 16 is located on the plurality of support bars 13, and the straight pipe section 7 is located above the arc reflection plate 16. Liquid-gas phase change material flows in the metal reentry tube 4, and the flow is driven by the pump body 5. The metal reentry tube 4 includes a plurality of straight pipe sections 7 and a plurality of C-shaped tubes, the C-shaped tubes and the straight pipe sections 7 are arranged at intervals, and the two straight pipe sections 7 adjacent to the C-shaped tubes are connected to the two ends of the C-shaped tube through a flange structure. The top surface of the curved reflector 16 is a mirror surface. A plurality of connecting rods 15 are provided, and the plurality of connecting rods 15 are parallel to each other. A temperature sensor and a flow meter are provided at both ends of the metal return tube 4. The bracket 1 is in a square frame shape, and a support is provided at the top of the frame of the bracket 1, and the metal return tube 4 is fixedly installed on the support.

[0033] In summary, after reading this detailed disclosure, it will be apparent to those skilled in the art that the aforementioned detailed disclosure may be presented only by way of example and may not be restrictive. Although not explicitly stated herein, it will be appreciated by those skilled in the art that this application is intended to encompass various reasonable changes, improvements and modifications to the embodiments. These changes, improvements and modifications are intended to be proposed by this application and are within the spirit and scope of the exemplary embodiments of this application.

[0034] It should be understood that in the foregoing description of the embodiments of the present application, in order to help understand a feature and to simplify the present application, the present application combines various features in a single embodiment, drawing or description thereof. However, this does not mean that the combination of these features is necessary, and it is entirely possible for those skilled in the art to extract some of the features and understand them as separate embodiments when reading the present application.

[0035] It should be understood that the embodiments disclosed herein are illustrations of the principles of the present application. Other modified embodiments are also within the scope of the present application. The embodiments disclosed herein are merely examples and not limitations, and the embodiments of the present application are not limited to the embodiments precisely described above.

Claims

1. A phase change energy storage device for a solar-ground source heat pump heating system, characterized in that: The utility model comprises a support (1), a column (2), a bottom plate (3), a metal return tube (4), a pump body (5), a control valve (6), a straight pipe section (7), a connecting plate (8), a plug hole (9), an arc strip (10), a mounting hole (11), a baffle strip (12), a support strip (13), a circular hole (14), a connecting rod (15), and a curved reflector plate (16); the column (2) is located at the bottom of the support (1); a plurality of columns (2) are arranged and are parallel to each other; a bottom plate (3) is arranged at the bottom end of the column (2); the bottom plate (3) is fixed on the ground; a metal return tube (4) is fixed on the support (1); the metal return tube (4) is connected to the pump body (5); a control valve (6) is arranged on the metal return tube (4); a plurality of straight The pipe section (7) has a plug hole (9) arranged on the upper side of the connecting plate (8), the straight pipe section (7) passes through the plug hole (9) and is fixed to the connecting plate (8), the arc bar (10) is located at the lower edge of the connecting plate (8), a plurality of mounting holes (11) are provided on the arc bar (10), a retaining bar (12) is fixed to the side end of the arc bar (10), a plurality of support bars (13) are connected between the retaining bars (12) on both sides of the arc bar (10), a circular hole (14) is provided on the support bar (13), a connecting rod (15) passes through the circular hole (14) and is fixed to the support bar (13), an end of the connecting rod (15) is fixed to the mounting hole (11), a curved reflector (16) is located on the plurality of support bars (13), and the straight pipe section (7) is located above the curved reflector (16).

2. A phase change energy storage device for a solar-ground source heat pump heating system according to claim 1, characterized in that: Liquid-gas phase change material flows in the metal return tube (4), and the flow is driven by a pump body (5).

3. A phase change energy storage device for a solar-ground source heat pump heating system according to claim 1, characterized in that: The metal return pipe (4) comprises a plurality of straight pipe sections (7) and a plurality of C-shaped pipes, wherein the C-shaped pipes and the straight pipe sections (7) are arranged at intervals, and two straight pipe sections (7) adjacent to the C-shaped pipes are connected to both ends of the C-shaped pipe via a flange structure.

4. A phase change energy storage device for a solar-ground source heat pump heating system according to claim 1, characterized in that: The top surface of the curved reflective plate (16) is a mirror surface.

5. A phase change energy storage device for a solar-ground source heat pump heating system according to claim 1, characterized in that: A plurality of connecting rods (15) are provided, and the plurality of connecting rods (15) are parallel to each other.

6. A phase change energy storage device for a solar-ground source heat pump heating system according to claim 1, characterized in that: Temperature sensors and flow meters are provided at both ends of the metal return tube (4).

7. A phase change energy storage device for a solar-ground source heat pump heating system according to claim 1, characterized in that: The support (1) is in the shape of a square frame, a support is provided at the top end of the frame of the support (1), and the metal folding tube (4) is fixedly mounted on the support.

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