Air energy storage sealing structure of chamber

Abstract

The utility model discloses a chamber air energy storage sealing structure which comprises a rock base material, supporting layers, a sealing layer and a protective layer which are sequentially arranged from inside to outside, the supporting layers and the sealing layer are both arranged in a sectional mode, a joint is arranged between every two adjacent supporting layers, each section of sealing layer is arranged on the outer surface of the corresponding supporting layer, and the protective layer is arranged between every two adjacent supporting layers. The joint is filled with silicone building sealant, and the protective layer is coated on the outer surfaces of the sealing layer and the silicone building sealant. The chamber air energy storage sealing structure has the advantages that layer-by-layer densification is achieved, the air leakage rate is reduced, and the permeability is low.

Description

Technical field

[0001] The utility model belongs to the technical field of sealing structures, and particularly relates to a sealing structure for air energy storage in a chamber. Background technique

[0002] Air energy storage can use compressed air as an energy carrier, which is a key technology to solve the intermittency and instability of current clean energy. Using abandoned chambers for gas storage is an economical and environmentally friendly option, and the safety stability and sealing performance of the gas storage chamber are the key technologies. At present, the sealing structure of the gas storage chamber is composed of concrete, steel plates, concrete and polymer sealing layers, which have problems such as large volume, high cost and high leakage rate. Summary of the invention

[0003] The purpose of the utility model is to provide a sealing structure for air energy storage in a chamber to solve the above problems existing in the prior art.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A sealing structure for air energy storage in a chamber, comprising a rock base material, a support layer, a sealing layer and a protective layer arranged in sequence from inside to outside. The support layer and the sealing layer are both arranged in a segmented manner. A joint is arranged between adjacent support layers for displacement compensation and to prevent the support layer from cracking due to excessive pressure caused by too large an area. Each segment of the sealing layer is arranged on the outer surface of the corresponding support layer. The joint is filled with silicone building sealant, and the protective layer is coated on the outer surfaces of the sealing layer and the silicone building sealant.

[0006] The working process and principle of the above structure are as follows:

[0007] The rock base material is used to bear the pressure of the chamber. The support layer serves as a leveling layer for the inner lining of the rock base material to transfer the pressure and prevent the rock from weathering and erosion. The sealing layer further improves the flatness of the base surface, enhances the structural fatigue resistance and reduces the permeability. The protective layer can further reduce the permeability, improve the fatigue resistance and corrosion protection. The joint is filled with silicone building sealant for multi-layer sealing, with higher safety. From the inside to the outside, it is gradually densified to reduce the air leakage rate of the inner lining sealing structure, and the stress is released layer by layer to improve the deformation ability and fatigue resistance of the inner lining sealing structure.

[0008] Further, the cross-section of the joint is an isosceles trapezoid. The small head end of the joint is in contact with the rock base material. The silicone building sealant is tightly filled in the joint, and the outer surface of the silicone building sealant is flush with and tightly attached to the outer surface of the sealing layer.

[0009] The joint in the shape of an isosceles trapezoid can better fill the silicone building sealant, increase the contact area between the silicone building sealant and the joint, improve its sealing performance, and the silicone building sealant is flush with the sealing layer, which helps to apply the protective layer.

[0010] Furthermore, the protective layer is made of a fluorine-containing high-polymer roughness-reducing protective coating, and at least one layer of protective layer is applied.

[0011] Fluorine-containing high-polymer roughness-reducing protective coating: Tensile strength ≥ 20 MPa, elongation at break ≥ 500%, heat resistance ≤ 180 °C, secondary reduction of permeability, improvement of fatigue resistance and corrosion protection.

[0012] Furthermore, the support layer is formed by casting polymer concrete on the outer surface of the rock substrate.

[0013] The compressive strength (28d) of the polymer concrete ≥ 60 MPa, the bond strength ≥ 4 MPa or substrate failure, heat resistance ≤ 200 °C; as a leveling layer for the inner lining of the rock substrate, it transmits pressure and prevents rock weathering and erosion.

[0014] Furthermore, the sealing layer is uniformly coated with epoxy mortar on the outer surface of the support layer.

[0015] The compressive strength (28d) of the epoxy mortar layer ≥ 80 MPa, the tensile strength (28d) ≥ 20 MPa, the ultimate elongation ≥ 5%, the bond strength ≥ 4 MPa or substrate failure, heat resistance ≤ 200 °C; it further improves the flatness of the base surface, the structural fatigue resistance, and reduces the permeability.

[0016] Furthermore, the thickness of the support layer is greater than the thickness of the sealing layer.

[0017] The greater thickness of the support layer ensures its compressive and tensile strength and can better transmit pressure.

[0018] Furthermore, a layer of protective layer is coated on the inner surface of the joint.

[0019] Setting a protective layer in the joint can better ensure the sealing performance and safety.

[0020] Beneficial effects: The utility model reduces the air leakage rate of the inner lining sealing structure by gradually increasing the density from the inside to the outside, releases the stress layer by layer, improves the deformation ability and fatigue resistance of the inner lining sealing structure, has a small volume and low construction cost. Brief Description of the Drawings

[0021] Figure 1 It is the front view of the overall structure of the utility model.

[0022] Reference numerals: 1. Rock substrate; 2. Support layer; 3. Sealing layer; 4. Protective layer; 5. Joint; 6. Silicone building sealant. Detailed implementation mode

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the present invention in combination with the descriptions of the accompanying drawings and the embodiments or the prior art. Obviously, the following descriptions of the structures of the accompanying drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings. It should be noted here that the descriptions of these embodiments are used to help understand the present invention, but do not constitute a limitation to the present invention. Embodiment

[0024] As Figure 1 shown, this embodiment provides a sealed structure for chamber air energy storage, which includes a rock base material 1, a support layer 2, a sealing layer 3, and a protective layer 4 arranged in sequence from the inside to the outside. The support layer 2 and the sealing layer 3 are both arranged in a segmented manner. A joint 5 is arranged between adjacent support layers 2. The joint 5 is used for displacement compensation and to prevent the support layer 2 from being too large in area, resulting in cracking under pressure. Each segment of the sealing layer 3 is arranged on the outer surface of the corresponding support layer 2. The joint 5 is filled with silicone building sealant 6, and the protective layer 4 is coated on the outer surfaces of the sealing layer 3 and the silicone building sealant 6.

[0025] The working process and principle of the above structure are as follows:

[0026] The rock base material 1 is used to bear the chamber pressure. The support layer 2 serves as a leveling layer for the inner lining of the rock base material 1 to transfer the pressure and prevent the rock from weathering and erosion. The sealing layer 3 further improves the flatness of the base surface, the structural fatigue resistance, and reduces the permeability. The protective layer 4 can further reduce the permeability, improve the fatigue resistance and corrosion resistance. The silicone building sealant 6 is used at the joint 5 for multi-layer sealing, with higher safety. From the inside to the outside, it is encrypted layer by layer, reducing the air leakage rate of the inner lining sealing structure, releasing stress layer by layer, and improving the deformation ability and fatigue resistance of the inner lining sealing structure.

[0027] In another embodiment of the present invention, as Figure 1 shown, the cross-section of the joint 5 is an isosceles trapezoid. The small head end of the joint 5 is in contact with the rock base material 1. The silicone building sealant 6 is tightly filled in the joint 5, and the outer surface of the silicone building sealant 6 is flush with and tightly adheres to the outer surface of the sealing layer 3.

[0028] The joint 5 with an isosceles trapezoid structure can better fill the silicone building sealant 6, increase the contact area between the silicone building sealant 6 and the joint 5, improve its sealing performance, and the silicone building sealant 6 being flush with the sealing layer 3 helps to coat the protective layer 4.

[0029] In another embodiment of the present invention, asFigure 1 As shown, the protective layer 4 is made of a fluorine-containing high-polymer roughness-reducing protective coating, and at least one layer of the protective layer 4 is coated.

[0030] Fluorine-containing high-polymer roughness-reducing protective coating: Tensile strength ≥ 20 MPa, elongation at break ≥ 500%, heat resistance ≤ 180 °C, secondary reduction of permeability, improvement of fatigue resistance and corrosion prevention.

[0031] In another embodiment of the present utility model, as Figure 1 shown, the support layer 2 is formed by casting polymer concrete on the outer surface of the rock base material 1.

[0032] The compressive strength (28d) of the polymer concrete ≥ 60 MPa, the bonding strength ≥ 4 MPa or substrate failure, heat resistance ≤ 200 °C; as a leveling layer for the inner lining of the rock base material 1, transferring pressure, preventing rock weathering and erosion.

[0033] In another embodiment of the present utility model, as Figure 1 shown, the sealing layer 3 is uniformly coated with epoxy mortar on the outer surface of the support layer 2.

[0034] The compressive strength (28d) of the epoxy mortar layer ≥ 80 MPa, the tensile strength (28d) ≥ 20 MPa, the ultimate elongation ≥ 5%, the bonding strength ≥ 4 MPa or substrate failure, heat resistance ≤ 200 °C; secondary improvement of the flatness of the base surface, structural fatigue resistance, reduction of permeability.

[0035] In another embodiment of the present utility model, as Figure 1 shown, the thickness of the support layer 2 is greater than the thickness of the sealing layer 3.

[0036] The greater thickness of the support layer 2 ensures its compressive and tensile strength and can better transfer pressure.

[0037] In another embodiment of the present utility model, as Figure 1 shown, the inner surface of the joint 5 is coated with a layer of the protective layer 4.

[0038] Setting the protective layer 4 in the joint 5 can better ensure the sealing performance and safety.

[0039] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the protection scope of the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A sealed structure for air energy storage in a chamber, characterized in that, It includes a rock base material, a support layer, a sealing layer, and a protective layer which are arranged in sequence from the inside out. The support layer and the sealing layer are both arranged in sections. There is a joint between adjacent support layers. Each section of the sealing layer is arranged on the outer surface of the corresponding support layer. The joint is filled with silicone building sealant, and the protective layer is coated on the outer surfaces of the sealing layer and the silicone building sealant.

2. The air storage chamber sealing structure according to claim 1, characterized in that The cross-section of the joint is an isosceles trapezoid. The small end of the joint contacts the rock base material. The silicone building sealant is tightly filled in the joint, and the outer surface of the silicone building sealant is flush with and tightly attached to the outer surface of the sealing layer.

3. The air storage sealed structure of the chamber according to claim 1, characterized in that, The protective layer uses a fluorine-containing high-polymer roughness-reducing protective coating, and at least one layer of the protective layer is coated.

4. The air storage sealing structure in the chamber according to claim 1, characterized in that The support layer is formed by pouring polymer concrete on the outer surface of the rock base material.

5. The air storage sealed structure of the chamber according to claim 1, characterized in that, The sealing layer uses epoxy mortar to evenly cover the outer surface of the support layer.

6. The air storage sealed structure of the chamber according to claim 1, characterized in that, The thickness of the support layer is greater than the thickness of the sealing layer.

7. The air storage sealed structure of the chamber according to claim 1, characterized in that, A layer of protective layer is coated on the inner surface of the joint.

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