Vacuum energy storage tank based on aerogel heat preservation

Abstract

A vacuum energy storage tank based on aerogel heat preservation comprises an inner shell, an aerogel heat insulation layer containing a phase change material, an I-shaped supporting ring with a hole, an outer shell, a sight glass and a sealing cover containing aerogel, and the I-shaped supporting ring with the hole is connected with the aerogel heat insulation layer containing the phase change material and the outer shell. The adjacent I-shaped supporting rings with holes, the aerogel heat insulation layer containing the phase-change material and the outer shell form a communicating filling space, the supporting rings are punched, so that the filling space is communicated, the communicating filling space is conveniently and uniformly vacuumized, the aerogel heat insulation layer containing the phase-change material better preserves heat of a medium in the inner shell, and the heat preservation effect of the aerogel heat insulation layer containing the phase-change material is improved. Energy leaked from a medium in the inner shell is stored in the phase change material, so that more reliable heat preservation is realized; the utility model has the advantages of good thermal insulation performance, light weight, low cost and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of building energy storage, and particularly relates to a vacuum energy storage tank based on aerogel insulation. Background Art

[0002] At present, the proportion of renewable energy power generation is steadily increasing. For example, solar energy, as one of the renewable energy sources, has the advantages of availability, abundance, and eco-friendliness. However, due to the periodicity and intermittency of solar energy, and the uneven demand for energy consumption during the day and night, energy storage technology has become a key technology to ensure the efficient and stable operation of renewable systems.

[0003] Energy storage tanks are the most common key equipment in energy storage technology. In the construction industry, they are mostly used to store cold and heat storage materials, and then use the stored cold and heat energy for building HVAC, power supply, etc., thereby reducing the difference in power consumption between the peak and valley of the building load and stably outputting cold and heat energy to compensate for the instability of renewable energy. In order to reduce energy loss during storage, the thermal insulation of energy storage tanks has always been an important technical indicator of equipment performance.

[0004] The existing energy storage tank includes an inner shell cylinder and an outer shell cylinder. The inner and outer shells are fixed with connectors, and the inner and outer shells are vacuum layered or filled with insulation materials to ensure the thermal insulation of the inner shell. The disadvantages of the prior art are: 1) There are many heat loss problems in the structure of the energy storage tank. For example, when the support is connected to the inner and outer shells, the connecting support ring will conduct heat, thereby affecting the thermal insulation effect of the inner shell. Secondly, in order to achieve the versatility of the energy storage tank, heat leakage of the storage tank will occur. For example, the existing patent CN202310688281.3 is called an isothermal molten salt energy storage tank device and a molten salt energy storage system. In order to increase the up and down flow of molten salt in the energy storage tank, a stirring mechanism is added, which will cause heat to be lost from the stirring mechanism and reduce the thermal insulation performance of the energy storage tank. 2) The insulation material is not effective, resulting in the insulation layer being too thick, which increases the quality and cost of the tank. For example, the existing patent CN20 1921457326.1 is entitled as a lightweight thermal insulation and waterproof foundation for large energy storage tanks. In order to increase the thermal insulation and waterproof performance of the energy storage tank, thermal insulation and waterproof layers, filling materials, etc. are added, but the thermal insulation and lightweight effect brought by the vacuum treatment is not considered; 3) In the existing patent CN216556452 entitled as an LNG storage tank, the support member is selected as an L-shaped ring, and multiple support rings are not connected. The space between the rings can only be filled with insulation materials, and the overall vacuum treatment between the inner and outer cylinders cannot be achieved; 4) The heat conduction and heat radiation caused by the sight glass in the storage tank are ignored to affect the thermal insulation of the tank. Summary of the invention

[0005] In view of the problems existing in the background technology, the utility model provides a vacuum energy storage tank based on aerogel insulation, in which the connecting piece between the inner shell and the outer shell is improved by punching holes to realize the overall connection between the inner shell and the outer shell, and the inner shell and the outer shell can be vacuumed or filled with an aerogel insulation layer to achieve the insulation effect between the inner and outer shells. The outer surface of the inner shell is wrapped with a layer of aerogel felt containing phase change material, and the released energy in the inner shell can be stored in the phase change material to achieve the insulation effect. A concave mirror is also proposed, which is equipped with a mirror sealing cover containing aerogel material. When it is necessary to view the medium of the inner shell of the storage tank, the sealing cover is removed to view the mirror. If it is not necessary to view, the sealing cover is covered to reduce the heat conduction and light radiation at the mirror. The insulation material selects aerogel with light weight and good insulation effect.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A vacuum energy storage tank based on aerogel insulation includes an inner shell, an outer shell, an I-shaped support ring with holes, an aerogel insulation layer containing a phase change material, a sight glass, and a sight glass sealing cover containing an aerogel material. The I-shaped support ring with holes is annular in shape, and is intended to be able to fix the inner and outer shells by snapping on the aerogel insulation layer containing a phase change material on the outer surface of the inner shell. Secondly, a filling space is formed between two adjacent I-shaped support rings with holes, the aerogel insulation layer containing a phase change material, and the outer shell. In order to achieve connectivity between the filling spaces, micropores are provided in the I-shaped support ring with holes, and the filling spaces can be uniformly vacuumed.

[0008] Preferably, the perforated I-shaped support ring is welded to the inner wall of the outer shell. The perforated I-shaped support ring is buckled on the aerogel insulation layer containing phase change material, similar to the form of a wine barrel.

[0009] Preferably, the phase change material in the aerogel insulation layer containing phase change material can be selected according to the requirements of cold storage or heat storage to insulate the inner shell.

[0010] Preferably, the viewing mirror is made on the inner shell body for easy viewing, and the surface of the outer shell body at the viewing mirror is concave.

[0011] Preferably, the sealing cover of the viewing mirror containing aerogel material has a metal cover surface that is the same as the outer shell, which is used to protect the aerogel material and reduce the heat radiation from the outside to the viewing mirror.

[0012] Compared with the prior art, the advantages of the utility model are:

[0013] 1. The utility model wraps an aerogel insulation layer containing phase change material on the outer surface of the inner shell, and buckles an I-shaped support ring with holes on the aerogel insulation layer containing phase change material. The outer shell is then welded and fixed to the I-shaped support ring with holes. The I-shaped support ring with holes enables the inner shell to be indirectly connected to the outer shell to avoid heat conduction at the connection. The aerogel insulation layer containing phase change material can absorb the energy leaked from the inner shell, thereby reducing energy loss.

[0014] 2. The utility model adopts a concave mirror, which is installed on the inner shell wall for easy viewing. The outer shell surface at the mirror is concave, and a mirror sealing cover containing aerogel material is installed at the concave part, which can not only ensure the heat insulation at the mirror but also reduce the influence of heat radiation, reduce the influence of heat conduction and heat radiation caused by the mirror, and improve the thermal insulation performance of the storage tank;

[0015] 3. The "I"-shaped support ring with holes in the utility model allows the filling space between the inner and outer shells of the energy storage tank to be uniformly vacuumed, which reduces the weight of the equipment and reduces the material cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0017] Figure 1 This is the overall structure diagram of the utility model;

[0018] Figure 2 This is the cross-sectional view of the energy storage tank wall;

[0019] Figure 3 It is a cross-sectional view of an I-shaped support ring with holes;

[0020] Figure 4 Structural diagram of the sight glass sealing cover with aerogel

[0021] Figure 5 It is the cross-sectional view of the sight glass;

[0022] Figure 6 It is a cross-sectional view of the utility model;

[0023] Figure numerals: 1 - inner shell, 2 - aerogel insulation layer containing phase change material, 3 - I-shaped support ring with holes, 4 - outer shell, 5 - sight glass, 6 - sight glass sealing cover containing aerogel material. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0026] In the description of the present utility model, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when used. It is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model.

[0027] In addition, the terms “first”, “second”, “third”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0028] In addition, the terms "horizontal", "vertical", "overhanging", etc. do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0029] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connection", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0031] like Figures 1 to 6As shown, a vacuum energy storage tank based on aerogel insulation includes an inner shell 1, an aerogel insulation layer 2 containing a phase change material, an I-shaped support ring 3 with holes, an outer shell 4, a sight glass 5, and a sealing cover 6 containing aerogel; the I-shaped support ring with holes has an I-shaped cross section and is punched, and the I-shaped support ring 3 with holes includes an aerogel insulation layer 2 containing a phase change material and an outer shell 4 connected; a filling space is formed between two adjacent support rings 3 and the aerogel insulation layer 2 containing a phase change material and the outer shell 4, and since the support rings are punched, the filling spaces are connected and can be uniformly vacuumed.

[0032] The technical solution improves the insulating filling layer wrapped around the outer wall of the inner shell 1 in the prior art into an aerogel insulating layer 2 containing a phase change material, thereby avoiding the direct connection between the perforated "I"-shaped support ring 3 and the inner cylinder 1, and stores the heat dissipated by the inner cylinder 1 in the phase change material to ensure the thermal insulation of the inner shell 1.

[0033] The I-shaped support ring 3 with holes in the present technical solution is mainly buckled on the aerogel insulation layer 2 containing phase change material by external force to ensure the fixation between the support ring and the inner shell.

[0034] The sight glass 5 in the technical solution is made of a flange structure on the inner shell 1 to facilitate viewing of the medium in the inner shell. In addition, an inner concave treatment is made on the outer shell 4 at the sight glass to ensure that the sight glass is not directly in contact with the outside world. If observation is required, remove the sealing cover 6 containing aerogel and observe directly. If observation is not required, install the sealing cover 6 containing aerogel to reduce the heat loss caused by heat conduction and heat radiation from the sight glass 5.

[0035] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A vacuum energy storage tank based on aerogel insulation, characterized by: The invention comprises an inner shell (1), an aerogel insulation layer (2) containing a phase change material, an I-shaped support ring (3) with holes, an outer shell (4), a sight glass (5), and a sight glass sealing cover (6) containing an aerogel material. The outer surface of the inner shell (1) is wrapped with an aerogel insulation layer (2) containing a phase change material. A plurality of I-shaped support rings (3) with holes are installed between the aerogel insulation layer (2) containing a phase change material and the outer shell (4). The I-shaped support rings (3) with holes have an I-shaped cross section and are perforated. The filling spaces between the support rings are interconnected due to the I-shaped support rings (3) with holes, and can be uniformly evacuated. The sight glass (5) is installed on the inner shell (1), the outer shell (4) is recessed at the sight glass (5), and the sight glass sealing cover (6) containing an aerogel material is installed at the recess of the outer shell (4).

2. A vacuum energy storage tank based on aerogel insulation according to claim 1, characterized in that: The aerogel insulation layer (2) containing a phase change material can select the phase change material according to the requirements of cold storage or heat storage.

3. The vacuum energy storage tank based on aerogel insulation according to claim 1, characterized in that: The I-shaped support ring (3) with holes is buckled onto the aerogel insulation layer (2) containing phase change material by external force.

4. The vacuum energy storage tank based on aerogel insulation according to claim 1, characterized in that: The sight glass sealing cover (6) containing aerogel material comprises aerogel heat-insulating material and a metal cover surface consistent with the outer shell (4).

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