CN217604771U

CN217604771U - Storage tank support bearing structure for energy storage of molten salt

Info

Publication number: CN217604771U
Application number: CN202221534890.0U
Authority: CN
Inventors: 严威; 程云; 黄然; 赵巍
Original assignee: Zhejiang Xizi United Engineering Co ltd
Current assignee: Zhejiang Xizi United Engineering Co ltd
Priority date: 2022-06-16
Filing date: 2022-06-16
Publication date: 2022-10-18
Anticipated expiration: 2032-06-16

Abstract

The utility model discloses a storage tank support bearing structure of fused salt energy storage joins in marriage heat-resisting steel reinforcement net piece in refractory castable to use heat-resisting grudging post reinforcing bar to become vertical fixed heat-resisting steel reinforcement skeleton with heat-resisting steel reinforcement net piece ligature, and heat-resisting steel reinforcement skeleton has improved the bearing capacity in order to improve heat-resisting castable, has solved heat-resisting steel reinforcement skeleton and refractory castable expansion deformation desynchronized problem under high temperature through the surface coating pitch at heat-resisting steel reinforcement again. The utility model has the advantages of simple construction, convenient material purchasing, wide applicability, cost saving and the like.

Description

Storage tank support bearing structure for fused salt energy storage

Technical Field

The utility model relates to a fused salt energy storage field especially relates to a storage tank support bearing structure of fused salt energy storage.

Background

With the proposal of the national 'double-carbon' target, energy conservation and emission reduction are the current hot problems and are also important problems which need to be solved urgently in the current society. High-temperature molten salt heat storage is a mature technical scheme and is often used for the consumption of some clean energy sources, such as solar energy, wind energy, peak shifting and valley filling of a power grid and the like, and the problems of discontinuity and unbalance of the energy sources can be effectively solved. At present, the scheme of domestic and foreign high-temperature molten salt heat storage is to use two cold and hot salt tanks for molten salt energy storage. The density of the salt in the tank is generally high (such as 2 tons per cubic meter), the volume of the tank is also large, the temperature of the salt in the hot salt tank can reach 700 ℃, and therefore, the bearing surface at the bottom of the whole tank is in a high-temperature and high-pressure state.

Although the common building materials such as steel bars and concrete have excellent compression resistance, the common working temperature is generally not more than 100 ℃, otherwise, heat-resistant concrete and heat-resistant steel bars are required. The concrete supply generally adopts local manufacturers, and the purchase of the heat-resistant concrete as a special product is not necessarily convenient. The castable is used as a common thermal insulation material, is convenient to purchase, has the similar properties to concrete, has excellent high-temperature resistance, but has small density and low compressive strength, and is difficult to bear the high-pressure state at the bottom of the tank. In order to improve the bearing capacity of the casting material, the form of internal reinforcing steel bars can be adopted according to the design idea of a concrete structure. However, in the case of two materials having a large difference in elastic modulus between the reinforcing steel bar and the casting material at a high temperature, expansion deformation at a high temperature is not synchronized, and expansion cracks are likely to occur, so that it is difficult to exhibit their advantages.

Disclosure of Invention

In order to solve the problem, the utility model provides a can bear the highly compressed stress state of tank bottoms bearing surface high temperature, let pouring material and reinforcing bar combined operation, the storage tank support pressure-bearing structure of the simple fused salt energy storage of performance advantage separately and construction.

In order to reach above-mentioned purpose, the utility model provides a storage tank support pressure-bearing structure of fused salt energy storage, including concrete ring wall, high strength shale haydite, alumina silicate fiber blanket layer, refractory castable and storage tank body support, concrete ring wall in fill the shale haydite that excels in, lay one deck alumina silicate fiber blanket layer on the shale haydite that excels in, pouring refractory castable on the alumina silicate fiber blanket layer, installation fused salt storage tank body support on the refractory castable, refractory castable in dispose the heat-resisting reinforcing bar net piece that is formed by the ligature of heat-resisting round steel. And a heat-resistant reinforcing steel mesh is arranged in the refractory castable so as to improve the pressure-bearing capacity of the refractory castable.

The further proposal is that the heat-resistant reinforcing mesh is bound into a vertically fixed heat-resistant reinforcing skeleton by heat-resistant vertical frame reinforcing steel bars according to the space required by the design. The planar heat-resistant reinforcing mesh and the heat-resistant vertical frame reinforcing steel bars are assembled into a vertically fixed heat-resistant reinforcing skeleton, so that the pressure bearing capacity of the heat-resistant castable is further improved.

In a further scheme, the surface layers of the heat-resistant round steel and the heat-resistant vertical frame steel bars are coated with asphalt materials. The function of coating asphalt on the heat-resistant steel bar framework is to reduce the biting force of the contact surface of the heat-resistant steel bar and the refractory castable, so that the heat-resistant steel bar and the refractory castable can deform freely at high temperature without mutual influence to generate expansion cracks, and meanwhile, the surfaces of the heat-resistant vertical frame steel bar and the heat-resistant round steel bar need to be smooth and clean before coating the asphalt.

The further scheme is that the whole heat-resistant steel reinforcement framework is bound and fixed by iron wires. The iron wire has certain shaping and toughness to guarantee the free deformation of the reinforcing steel bar under the thermal expansion.

In a further scheme, a refractory ceramic fiber board is arranged between the refractory castable and the concrete ring wall. The refractory ceramic fiber board material is used as a rigid heat insulation material, and can transfer the lateral pressure of the refractory castable to the concrete annular wall.

The further proposal is that the heat-resistant reinforcing mesh sheets are not less than 4 layers on one side close to the pressure bearing surface of the refractory castable, the vertical spacing is 30-80 mm, and the heat-resistant reinforcing mesh sheets are respectively arranged in the middle and at the bottom of the rest areas of the refractory castable. The main stress position of the refractory castable is positioned at one side of the pressure-bearing surface, so that heat-resistant reinforcing steel bar meshes are densely arranged at the position close to one side of the pressure-bearing surface.

The further proposal is that the iron wire is bound and fixed by a splayed shape. The splayed binding and fixing method enables the heat-resistant reinforcing steel bar net piece to be subjected to binding forces in different directions, so that the heat-resistant reinforcing steel bar net piece is not easy to slip towards the same side.

The utility model discloses a storage tank support bearing structure of fused salt energy storage joins in marriage heat-resisting steel reinforcement net piece in refractory castable to use heat-resisting grudging post reinforcing bar to become vertical fixed heat-resisting steel reinforcement skeleton with the ligature of heat-resisting steel reinforcement net piece, and heat-resisting steel reinforcement skeleton has improved the bearing capacity in order to improve heat-resisting castable, has solved heat-resisting steel reinforcement skeleton and refractory castable expansion deformation desynchronized problem under the high temperature through the surface coating pitch at heat-resisting steel reinforcement again. The utility model has the advantages of simple construction, convenient material purchasing, extensive applicability, cost saving, etc.

Drawings

FIG. 1 is a schematic view of the structure of embodiment 1;

FIG. 2 is a schematic structural view of a refractory castable material and a heat-resistant reinforcing cage in example 1;

fig. 3 is a schematic structural view of the heat-resistant mesh sheet of steel reinforcement in example 1.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the objects of the present invention, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.

Example 1.

As shown in fig. 1 to 3, the storage tank support bearing structure for molten salt energy storage described in this embodiment includes a concrete annular wall 1, a high-strength shale ceramsite 2, an aluminum silicate fiber blanket layer 3, a refractory castable 4, and a storage tank body support 5, the concrete annular wall 1 is filled with the high-strength shale ceramsite 2, the aluminum silicate fiber blanket layer 3 is laid on the high-strength shale ceramsite 2, the refractory castable 4 is poured on the aluminum silicate fiber blanket layer 3, the molten salt storage tank body support 5 is installed on the refractory castable 4, and a heat-resistant steel bar mesh 8 bound by heat-resistant round steel 7 is arranged in the refractory castable 4. And a refractory ceramic fiber board 13 is arranged between the refractory castable 4 and the concrete ring wall 1. The surface layers of the heat-resistant round steel 7 and the heat-resistant vertical frame steel bar 9 are coated with asphalt 11 materials.

The heat-resistant reinforcing mesh sheets 8 are bound into a vertically fixed heat-resistant reinforcing framework 10 through heat-resistant vertical frame reinforcing steel bars 9 according to the design requirement. The whole heat-resistant reinforcement framework 10 is bound and fixed by iron wires 12. The iron wire 12 is bound and fixed in a splayed manner. The heat-resistant reinforcing steel mesh sheets 8 are 6 layers in total, wherein the number of the upper parts close to the pressure bearing surface of the refractory castable 4 is 4, the distance between every two layers is 30-80 mm, and the heat-resistant reinforcing steel mesh sheets 8 are respectively arranged in the middle and at the bottom of the rest areas of the lower part of the refractory castable 4.

The foregoing is illustrative of the preferred embodiments of the present invention and is not to be construed as limiting thereof, although the invention is described in detail in the context of the preferred embodiments, which are not intended to limit the invention. Any person skilled in the art should make equivalent embodiments with equivalent changes by using some changes or modifications without departing from the technical scope of the present invention, and any brief introduction modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention still belong to the technical scope of the present invention.

Claims

1. The utility model provides a storage tank support pressure-bearing structure of fused salt energy storage, includes concrete ring wall (1), high strength shale haydite (2), alumina silicate fiber blanket layer (3), refractory castable (4) and storage tank body support (5), concrete ring wall (1) in pack high strength shale haydite (2), lay one deck alumina silicate fiber blanket layer (3) on high strength shale haydite (2), pour refractory castable (4) on alumina silicate fiber blanket layer (3), install fused salt storage tank body support (5) on refractory castable (4), its characterized in that, refractory castable (4) in dispose heat-resisting reinforcing bar net piece (8) that are formed by the ligature of heat-resisting round steel (7).

2. The molten salt energy storage tank support bearing structure of claim 1, characterized in that the heat-resistant reinforcing mesh (8) is bound into a vertically fixed heat-resistant reinforcing framework (10) through heat-resistant vertical frame reinforcing bars (9) at intervals required by design.

3. The molten salt energy storage tank support bearing structure of claim 2, characterized in that the heat-resistant round steel (7) and the heat-resistant vertical frame steel bars (9) are coated with asphalt (11) material.

4. The molten salt energy storage tank support bearing structure of claim 3, characterized in that the whole heat-resistant reinforcement framework (10) is bound and fixed by iron wires (12).

5. The molten salt energy storage tank support bearing structure of claim 4, characterized in that a refractory ceramic fiber plate (13) is arranged between the refractory castable (4) and the concrete annular wall (1).

6. The molten salt energy storage tank support bearing structure of claim 5, characterized in that the heat-resistant reinforcing mesh sheets (8) are not less than 4 layers on one side close to the bearing surface of the refractory castable (4), the vertical spacing is 30-80 mm, and one heat-resistant reinforcing mesh sheet (8) is respectively arranged in the middle and at the bottom of the rest area of the refractory castable (4).

7. The molten salt energy storage tank support bearing structure of claim 6, characterized in that the iron wires (12) are bound and fixed by splayed binding.