Laminated composite sealing lining for energy storage cavern and construction method of laminated composite sealing lining

Abstract

The invention discloses a laminated composite sealing lining for an energy storage cavern and a construction method thereof.The laminated composite sealing lining at least comprises a special-material bonding glue layer, a bottom metal foil layer, a metal bonding glue layer and an outer metal foil layer, and the flat inner wall of a bedding and clothing concrete layer of the energy storage cavern is coated with the special-material bonding glue layer; a bottom metal foil layer is attached to the inner wall of the special material adhesive layer, a metal adhesive layer is brushed on the inner wall of the bottom metal foil layer, an outer metal foil layer is attached to the inner wall of the metal adhesive layer, and the outer metal foil layer is arranged in a staggered mode relative to the bottom metal foil layer so as to cover the seam of the bottom metal foil layer. The laminated composite sealing lining provided by the invention solves the problem of installation of the lining plate of the underground energy storage cavern, uses the metal foil as a bonding material, is thin in thickness, corrosion-resistant and welding-free, solves the problems of blanking, welding and inspection of the material, saves the material, reduces the construction difficulty, greatly shortens the construction period, and is easy to maintain.

Description

Technical Field

[0001] The invention belongs to the technical field of energy storage, and in particular relates to a laminated composite sealing lining for an energy storage chamber and a construction method thereof. Background Art

[0002] Now solar power generation and wind power generation are becoming more and more mature, and the cost is also decreasing, but new energy power generation has a characteristic, instability. Our existing power grid cannot withstand the impact of solar power generation and wind power generation. If we want to get more electricity generated by solar energy and wind energy into the power grid, we must be able to store the electricity generated by solar energy and wind energy, and then convert it into balanced electricity. If this step can be completed, the large-scale utilization of new energy can become a reality. There are many ways to store energy, and compressed air energy storage is the most promising method. When electricity is abundant, the air compressor is started to convert electricity into air compression energy; when electricity is short, compressed air is used to drive the generator to generate electricity.

[0003] The commonly used method at present is to manually excavate the underground caverns and clad them with reinforced concrete. The thickness of the concrete cladding is hundreds of millimeters. Then, a lining steel plate with a thickness of about 8 mm is installed in the cavern. The main purpose of the lining steel plate is to isolate the concrete from the compressed air. The surface of the concrete cannot withstand repeated pressure changes, which affects the service life of the concrete. The installation of the lining steel plate of the deep underground cavern is the key. The commonly used method at present is the welding construction of the lining steel plate. However, the main problems of welding construction are: it requires a large number of highly skilled welders, long construction time, large investment and long economic payback period. Therefore, seeking to build a new lining structure has become a key technical direction for the construction of energy storage caverns. Summary of the invention

[0004] The object of the present invention is to provide a laminated composite sealing lining for energy storage chambers and a construction method thereof in view of the problems existing in the prior art.

[0005] The purpose of the present invention is to be solved by the following technical solutions: A laminated composite sealing liner for an energy storage chamber, characterized in that the laminated composite sealing liner at least comprises a dissimilar material adhesive layer, a bottom metal foil layer, a metal adhesive layer, and an external metal foil layer; the dissimilar material adhesive layer is applied on the smooth inner wall of the concrete layer of the energy storage chamber, the bottom metal foil layer is affixed to the inner wall of the dissimilar material adhesive layer, the metal adhesive layer is applied on the inner wall of the bottom metal foil layer, the external metal foil layer is affixed to the inner wall of the metal adhesive layer, and the external metal foil layer is staggered relative to the bottom metal foil layer to cover the joint of the bottom metal foil layer.

[0006] At least one interlayer metal foil layer is arranged between the bottom metal foil layer and the outer metal foil layer.

[0007] The interlayer metal foil layer adjacent to the bottom metal foil layer is offset relative to the bottom metal foil layer to cover the seam of the bottom metal foil layer and the outer metal foil layer adjacent to the interlayer metal foil layer is offset relative to the interlayer metal foil layer to cover the seam of the interlayer metal foil layer, or the interlayer metal foil layer adjacent to the bottom metal foil layer is offset relative to the bottom metal foil layer to cover the seam of the bottom metal foil layer and the outer metal foil layer adjacent to the interlayer metal foil layer is offset relative to the interlayer metal foil layer to cover the seam of the interlayer metal foil layer and the inner interlayer metal foil layer is offset relative to the outer interlayer metal foil layer to cover the seam of the outer interlayer metal foil layer.

[0008] A metal adhesive layer is arranged between the interlayer metal foil layer and the bottom metal foil layer, and between the interlayer metal foil layer and the outer metal foil layer; or a metal adhesive layer is arranged between the interlayer metal foil layer and the bottom metal foil layer, between the interlayer metal foil layer and the interlayer metal foil layer, and between the interlayer metal foil layer and the outer metal foil layer.

[0009] The thickness of the interlayer metal foil layer is not greater than the thickness of the bottom metal foil layer and the thickness of the interlayer metal foil layer is not less than the thickness of the outer metal foil layer.

[0010] The concrete used in the clothing concrete layer is made of cement with a strength grade of C40 or above.

[0011] The concrete used in the cladding concrete layer is mixed with water glass; or a concrete leveling layer is arranged on the inner wall of the cladding concrete layer, and the concrete used in the concrete leveling layer is mixed with water glass.

[0012] The dissimilar material bonding adhesive used in the dissimilar material bonding adhesive layer can bond stone and metal, or concrete and metal, and the dissimilar material bonding adhesive includes epoxy resin structural adhesive, polyurethane adhesive, acrylate structural adhesive, and silicone sealant; the metal bonding adhesive used in the metal bonding adhesive layer can bond the same metal or dissimilar metals, and the metal bonding adhesive includes epoxy resin structural adhesive, acrylate structural adhesive, silicone structural adhesive, instant glue, and anaerobic structural adhesive.

[0013] The dissimilar material bonding adhesive used in the dissimilar material bonding adhesive layer is a self-adhesive adhesive; the metal bonding adhesive used in the metal bonding adhesive layer is a self-adhesive adhesive.

[0014] The thickness of the dissimilar material bonding layer is 0.1 mm to 8 mm, and the thickness of the metal bonding layer is 0.1 mm to 3 mm.

[0015] The thickness of the dissimilar material bonding layer is 0.5 mm to 3 mm, and the thickness of the metal bonding layer is 0.1 mm to 1 mm.

[0016] The metal foil used in the bottom metal foil layer is one of alloy foil, stainless steel foil and aluminum foil, and the metal foil used in the outer metal foil layer is one of alloy foil, stainless steel foil and aluminum foil; the thickness of the bottom metal foil layer is 0.01mm to 1mm, and the thickness of the outer metal foil layer is 0.01mm to 0.5mm.

[0017] The thickness of the bottom metal foil layer is 0.01 mm to 0.5 mm, and the thickness of the outer metal foil layer is 0.02 mm to 0.3 mm.

[0018] The thickness of the bottom metal foil layer is 0.06 mm to 0.5 mm, and the thickness of the outer metal foil layer is 0.02 mm to 0.02 mm.

[0019] The metal foil used in the interlayer metal foil layer is one of alloy foil, stainless steel foil and aluminum foil, and the thickness of the interlayer metal foil layer is 0.01mm-0.5mm.

[0020] The thickness of the interlayer metal foil layer is 0.04 mm to 0.2 mm.

[0021] A construction method for a laminated composite sealing lining for an energy storage chamber, characterized in that the construction method comprises the following steps: A. Leveling the inner wall of the clad concrete layer on the inner wall of the energy storage chamber, or leveling the inner wall of the concrete leveling layer inside the clad concrete layer; B. Apply a dissimilar material bonding adhesive layer on the flat inner wall of the clothing concrete layer or the flat inner wall of the concrete leveling layer; C. Paste the bottom metal foil layer on the inner wall of the dissimilar material bonding layer; D. A metal adhesive layer is applied on the inner wall of the bottom metal foil layer; F. An outer metal foil layer is attached to the inner wall of the metal adhesive layer, and the outer metal foil layer is staggered relative to the bottom metal foil layer to cover the joint of the bottom metal foil layer.

[0022] A construction method for a laminated composite sealing lining for an energy storage chamber, characterized in that the construction method comprises the following steps: A. Leveling the inner wall of the clad concrete layer on the inner wall of the energy storage chamber, or leveling the inner wall of the concrete leveling layer inside the clad concrete layer; B. Apply a dissimilar material bonding adhesive layer on the flat inner wall of the clothing concrete layer or the flat inner wall of the concrete leveling layer; C. Paste the bottom metal foil layer on the inner wall of the dissimilar material bonding layer; D. A metal adhesive layer is applied on the inner wall of the bottom metal foil layer; E. Pasting an interlayer metal foil layer on the inner wall of the metal adhesive layer, and the interlayer metal foil layer is staggered relative to the bottom metal foil layer to cover the joint of the bottom metal foil layer; F. A metal adhesive layer is applied on the inner wall of the interlayer metal foil layer; G. An outer metal foil layer is attached to the inner wall of the metal adhesive layer, and the outer metal foil layer is staggered relative to the interlayer metal foil layer to cover the joint of the interlayer metal foil layer.

[0023] When the covered concrete layer in step A has a honeycombed surface, a stainless steel plate with a thickness of 1 mm to 3 mm is arranged on the honeycombed surface.

[0024] A plurality of interlayer metal foil layers may be attached to the inner wall of the metal bonding layer in step F, and the inner interlayer metal foil layer is staggered relative to the outer interlayer metal foil layer to cover the joint of the outer interlayer metal foil layer.

[0025] Compared with the prior art, the present invention has the following advantages: The stacked composite sealing lining provided by the present invention solves the problem of installing the lining plate of the underground energy storage cavern. It uses metal foil as the bonding material, which is thin, corrosion-resistant and welding-free, and solves the problems of material cutting, welding and inspection. At the same time, it saves materials, reduces the difficulty of construction, greatly shortens the construction period, and makes maintenance easier. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Attached Figure 1 A schematic structural diagram of a laminated composite sealing liner for an energy storage chamber provided in the first embodiment of the present invention; Attached Figure 2 A schematic structural diagram of a laminated composite sealing liner for an energy storage chamber provided in the second embodiment of the present invention; Attached Figure 3 A schematic diagram of the structure of a laminated composite sealing liner for an energy storage chamber provided in Example 3 of the present invention.

[0027] Among them: 1—bedding concrete layer; 2—dissimilar material bonding layer; 3—bottom metal foil layer; 4—metal bonding layer; 5—external metal foil layer; 6—interlayer metal foil layer; 7—concrete leveling layer. DETAILED DESCRIPTION

[0028] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0029] The terms "a", "an", "the", and "said" are used to indicate the presence of one or more elements / components / etc.; the terms "comprising" and "having" are used to express an open-ended inclusive meaning and mean that additional elements / components / etc. may be present in addition to the listed elements / components / etc.

[0030] like Figure 1-3 As shown: a laminated composite sealing lining for an energy storage chamber, the laminated composite sealing lining at least includes a dissimilar material bonding layer 2, a bottom metal foil layer 3, a metal bonding layer 4, and an external metal foil layer 5. The dissimilar material bonding layer 2 is applied on the smooth inner wall of the concrete layer 1 of the energy storage chamber, the bottom metal foil layer 3 is affixed to the inner wall of the dissimilar material bonding layer 2, the metal bonding layer 4 is applied on the inner wall of the bottom metal foil layer 3, the external metal foil layer 5 is affixed to the inner wall of the metal bonding layer 4, and the external metal foil layer 5 is staggered relative to the bottom metal foil layer 3 to cover the joint of the bottom metal foil layer 3.

[0031] On the basis of the above-mentioned laminated composite sealing liner, at least one interlayer metal foil layer 6 is further arranged between the bottom metal foil layer 3 and the outer metal foil layer 5, and the thickness of the interlayer metal foil layer 6 is not greater than the thickness of the bottom metal foil layer 3 and the thickness of the interlayer metal foil layer 6 is not less than the thickness of the outer metal foil layer 5. The interlayer metal foil layer 6 adjacent to the bottom metal foil layer 3 is offset relative to the bottom metal foil layer 3 to cover the seam of the bottom metal foil layer 3 and the outer metal foil layer 5 adjacent to the interlayer metal foil layer 6 is offset relative to the interlayer metal foil layer 6 to cover the seam of the interlayer metal foil layer 6, or the interlayer metal foil layer 6 adjacent to the bottom metal foil layer 3 is offset relative to the bottom metal foil layer 3 to cover the seam of the bottom metal foil layer 3 and the outer metal foil layer 5 adjacent to the interlayer metal foil layer 6 is offset relative to the interlayer metal foil layer 6 to cover the seam of the interlayer metal foil layer 6 and the inner interlayer metal foil layer 6 is offset relative to the outer interlayer metal foil layer 6 to cover the seam of the outer interlayer metal foil layer 6. A metal adhesive layer 4 is arranged between the interlayer metal foil layer 6 and the bottom metal foil layer 3, and between the interlayer metal foil layer 6 and the outer metal foil layer 5; or a metal adhesive layer 4 is arranged between the interlayer metal foil layer 6 and the bottom metal foil layer 3, between the interlayer metal foil layer 6 and the interlayer metal foil layer 6, and between the interlayer metal foil layer 6 and the outer metal foil layer 5.

[0032] In actual use, the thickness of the bottom metal foil layer 3 is 0.01mm~1mm, the thickness of the interlayer metal foil layer 6 is 0.01mm~0.5mm, and the thickness of the outer metal foil layer 5 is 0.01mm~0.5mm. A preferred solution is that the thickness of the bottom metal foil layer 3 is 0.01mm~0.5mm, the thickness of the interlayer metal foil layer 6 is 0.01mm~0.3mm, and the thickness of the outer metal foil layer 5 is 0.02mm~0.3mm. A further preferred solution is that the thickness of the bottom metal foil layer 3 is 0.06mm~0.5mm, the thickness of the interlayer metal foil layer 6 is 0.04mm~0.2mm, and the thickness of the outer metal foil layer 5 is 0.02mm~0.06mm.

[0033] The metal foil used in the laminated composite sealing liner provided by the present invention is one of alloy foil, stainless steel foil and aluminum foil. The bottom metal foil layer 3, the interlayer metal foil layer 6 and the outer metal foil layer 5 can be made of the same type of metal foil or different types of metal foil, but the metal foil is required to have certain strength and corrosion resistance. It should be noted that when the metal foil is aluminum foil, the thickness of the aluminum foil is not less than 0.03 mm.

[0034] Since the energy storage cave has requirements on the concrete strength grade, the concrete used in our clothing concrete layer 1 is made of cement with a strength grade of C40 or above.

[0035] The leveling of the energy storage chamber includes the leveling of the inner wall surface of the concrete layer 1 or the concrete leveling layer 7, and the rounding of the right angles of the energy storage chamber. The rounding process can be performed by making the chamfer with a curvature radius greater than 300 mm.

[0036] In order to facilitate the leveling process and improve the performance of concrete, water glass can be added to the concrete used in the servo concrete layer 1; or a layer of concrete leveling layer 7 is arranged on the inner wall of the servo concrete layer 1, and the concrete used in the concrete leveling layer 7 is mixed with water glass. When the concrete leveling layer 7 is set, it is preferred that water glass and cement are mixed in a mass ratio of 1:2-10.

[0037] Water glass (sodium silicate or potassium silicate solution) can react with calcium hydroxide in cement hydration products to generate calcium silicate gel, which fills the pores of concrete and improves its density. The effects of adding water glass on the performance of concrete include: quickly improving the early strength of concrete, especially suitable for projects that require rapid hardening, such as shotcrete in tunnel projects; effectively reducing the porosity of concrete and improving its impermeability, which is often used in underground waterproofing projects; enhancing the acid resistance of concrete to a certain extent, and can be used for the ground of industrial sites corroded by acidic media.

[0038] The thickness of the dissimilar material bonding layer 2 in the laminated composite sealing lining provided by the present invention is 0.1mm-8mm, preferably 0.5mm-3mm; the dissimilar material bonding adhesive used in the dissimilar material bonding layer 2 can bond stone and metal, or concrete and metal, and the dissimilar material bonding adhesive includes epoxy resin structural adhesive, polyurethane adhesive, acrylate structural adhesive, and silicone sealant.

[0039] The characteristics of epoxy resin structural adhesive include: excellent adhesion to cement and metal foil, high-strength bonding, ensuring the firm attachment of stainless steel foil, and resistance to external impact and vibration; water-resistant, acid-resistant, and suitable for humid or chemically corroded underground storage environments; high hardness, stable dimensions, and low shrinkage after curing to avoid bond failure due to shrinkage; the disadvantage is that the curing time is relatively long, which may take several hours to a day, and needs to be precisely mixed in proportion. The epoxy resin structural adhesive brands we currently use include 3M, Henkel Loctite, Huitian, etc.

[0040] The characteristics of polyurethane adhesive include: good adhesion to a variety of materials, especially between materials with large differences in thermal expansion coefficients such as cement and metal foil, which can effectively buffer stress and reduce the risk of debonding caused by temperature changes; the adhesive layer is flexible after curing, adapting to a certain degree of material deformation, and maintaining a good bonding state when there may be slight displacement in the underground warehouse; good UV resistance and aging resistance, suitable for long-term outdoor or underground use. The polyurethane adhesive brands we currently use include Henkel, Sika, Gaomeng New Materials, etc.

[0041] The characteristics of acrylic structural adhesive are: fast curing, can achieve high bonding strength in a short time, improve construction efficiency. Strong bonding to cement and metal foil, ensure fast positioning and firm adhesion; single-component packaging, no need for on-site mixing, easy to use, reduce operating difficulty and human error; has a certain temperature resistance, can maintain good bonding performance within a certain temperature range; but the performance stability at high temperature is slightly inferior to epoxy resin structural adhesive. The brands of acrylic structural adhesive we currently use include Zhengguang, Kraft, Tianyou, etc.

[0042] The characteristics of silicone sealant are: good adhesion to cement and metal foil, especially suitable for parts with high requirements for sealing and waterproofing, which can prevent moisture from penetrating into the bonding interface and affecting the bonding effect; excellent weather resistance, UV resistance, ozone resistance, high and low temperature resistance, and long-term stable performance in harsh environments; the adhesive layer is soft and elastic, which can adapt to the expansion and contraction of materials and buffer external stress; but the bonding strength is slightly lower than that of epoxy structural adhesive and polyurethane adhesive, and it is not suitable for parts subject to large shear forces. The silicone sealant brands we currently use include DOWSIL, WACKER, and Silicone Treasure.

[0043] The thickness of the metal adhesive layer 4 in the laminated composite sealing liner provided by the present invention is 0.1mm-3mm, preferably 0.1mm-1mm; the metal adhesive used in the metal adhesive layer 4 can bond the same metal or different metals, and the metal adhesive used in the metal adhesive layer 4 needs to ensure high adhesion between metal foils, and can firmly bond the metal foil to the cave wall without loosening under repeated pressure; the metal adhesive includes epoxy resin structural adhesive, acrylate structural adhesive, silicone structural adhesive, instant adhesive, and anaerobic structural adhesive.

[0044] Epoxy resin structural adhesive has high strength and strong adhesion. It is composed of two parts, resin and curing agent. After mixing, it can form a hard bonding interface, has excellent temperature resistance and chemical resistance, and is transparent and not easy to change color after curing. For example, 8220H epoxy resin structural adhesive has high bonding strength, strong resistance to environmental influence, simple ratio, good fluidity, and adjustable curing time, such as Henkel Loctite EA E-60HP epoxy resin structural adhesive, which has high peel strength and shear strength after curing at room temperature and is resistant to most chemicals and solvents. Acrylate structural adhesive has good strength, fast curing speed, and good sealing performance. It is suitable for stainless steel foil pasting that requires fast curing and has certain strength requirements. For example, JL-109 acrylic AB adhesive has sufficient operating time for large-area pasting of stainless steel foil, and can achieve good bonding strength after curing. Silicone structural adhesive has the best sealing performance, and its weather resistance and high temperature resistance are very ideal, but the curing speed is slow. Some single-component silicone structural adhesives can adapt to different environmental conditions in the bonding of stainless steel foil, especially in high temperature or outdoor environments. It has good stability. Instant glue, also known as super glue, has the biggest feature of fast curing, easy use, and good initial adhesion. For example, JL-498 quick-drying metal glue is suitable for small-area stainless steel foil bonding. Only one drop is needed to stick firmly, saving time and effort, simple operation, and suitable for continuous production line operations. For example, Henkel Loctite's 496 instant glue has good bonding properties to common metal substrates and is suitable for fast bonding. Anaerobic structural adhesives have extremely high bonding strength, using the anaerobic curing principle, hardening in an oxygen-deficient environment, strong corrosion resistance, and good bonding effects under different temperature and humidity conditions. For example, 4001 anaerobic structural adhesive is particularly suitable for bonding metal materials and can be used for stainless steel foil, providing a stable connection for stainless steel foil.

[0045] The above examples of adhesive for foil pasting only illustrate that the present invention can use the above-mentioned types of adhesive for different materials and adhesive for metals, but is not limited to the above-mentioned types of adhesive for different materials and adhesive for metals. In practical applications, the adhesive for foil pasting needs to comprehensively consider multiple factors such as bonding strength, shear strength, peel strength, initial adhesion, water resistance, corrosion resistance, aging resistance, curing shrinkage, insulation performance, environmental protection performance, etc.

[0046] The dissimilar material adhesive layer 2 in the laminated composite sealing liner provided by the present invention uses self-adhesive adhesive, and the metal adhesive layer 4 uses self-adhesive adhesive. The purpose of using self-adhesive adhesive is that the self-adhesive adhesive can maintain softness for a long time, so as to facilitate the expansion or contraction of metal foil due to thermal expansion and contraction. Example

[0047] A construction method for a laminated composite sealing lining for an energy storage chamber, the construction method comprises the following steps: A. Leveling the inner wall of the covered concrete layer 1 on the inner wall of the energy storage chamber; B. Apply a 2mm thick dissimilar material bonding adhesive layer 2 on the flat inner wall of the clothing concrete layer 1; C. Paste a 0.03 mm thick alloy foil on the inner wall of the dissimilar material bonding adhesive layer 2 as the bottom metal foil layer 3; D. A 0.5 mm thick metal adhesive layer 4 is applied on the inner wall of the bottom metal foil layer 3; F. A 0.02 mm thick alloy foil outer metal foil layer 5 is attached to the inner wall of the metal adhesive layer 4, and the outer metal foil layer 5 is staggered relative to the bottom metal foil layer 3 to cover the joint of the bottom metal foil layer 3; The structure of the completed laminated composite sealing lining is as follows: Figure 1 shown. Example

[0048] A construction method for a laminated composite sealing lining for an energy storage chamber, characterized in that the construction method comprises the following steps: A. Leveling the inner wall of the covered concrete layer 1 on the inner wall of the energy storage chamber; B. Apply a 1mm thick dissimilar material bonding adhesive layer 2 on the flat inner wall of the clothing concrete layer 1; C. A 0.05 mm thick stainless steel foil is attached to the inner wall of the dissimilar material bonding adhesive layer 2 as the bottom metal foil layer 3; D. A 0.3 mm thick metal adhesive layer 4 is applied on the inner wall of the bottom metal foil layer 3; E. A 0.05 mm thick stainless steel foil is attached to the inner wall of the metal adhesive layer 4 as the interlayer metal foil layer 6, and the interlayer metal foil layer 6 is staggered relative to the bottom metal foil layer 3 to cover the joint of the bottom metal foil layer 3; F. A 0.3 mm thick metal adhesive layer 4 is applied on the inner wall of the interlayer metal foil layer 6; G. A 0.05 mm thick stainless steel foil is attached to the inner wall of the metal adhesive layer 4 as the outer metal foil layer 5, and the outer metal foil layer 5 is staggered relative to the interlayer metal foil layer 6 to cover the joint of the interlayer metal foil layer 6; The structure of the completed laminated composite sealing lining is as follows: Figure 2 shown. Example

[0049] A construction method for a laminated composite sealing lining for an energy storage chamber, characterized in that the construction method comprises the following steps: A. Leveling the inner wall of the concrete leveling layer 7 inside the clothing concrete layer 1; B. Apply a 0.5mm thick dissimilar material bonding adhesive layer 2 on the flat inner wall of the concrete leveling layer 7; C. A 0.25 mm thick aluminum foil is attached to the inner wall of the dissimilar material bonding adhesive layer 2 as the bottom metal foil layer 3; D. A 0.8 mm thick metal adhesive layer 4 is applied on the inner wall of the bottom metal foil layer 3; E. A 0.25 mm thick aluminum foil is attached to the inner wall of the metal adhesive layer 4 as an interlayer metal foil layer 6, and the interlayer metal foil layer 6 is staggered relative to the bottom metal foil layer 3 to cover the joint of the bottom metal foil layer 3; F. A 0.8 mm thick metal adhesive layer 4 is applied on the inner wall of the interlayer metal foil layer 6; G. A 0.25 mm thick aluminum foil is attached to the inner wall of the metal adhesive layer 4 as the outer metal foil layer 5, and the outer metal foil layer 5 is staggered relative to the interlayer metal foil layer 6 to cover the joint of the interlayer metal foil layer 6; The structure of the completed laminated composite sealing lining is as follows: Figure 3 shown.

[0050] In the above three embodiments, when it is detected that the bedding concrete layer 1 has a honeycombed surface, it is not possible to directly apply adhesive or metal foil, and the honeycombed surface must be remedied. The specific method is to first fill and level the honeycombed surface, and then install a 1mm to 3mm thick stainless steel plate on the defective part.

[0051] The stacked composite sealing lining provided by the present invention solves the problem of installing the lining plate of the underground energy storage cavern. It uses metal foil as the bonding material, which is thin, corrosion-resistant and welding-free, and solves the problems of material cutting, welding and inspection. At the same time, it saves materials, reduces the difficulty of construction, greatly shortens the construction period, and makes maintenance easier.

[0052] In the embodiments of the present invention, the term "plurality" refers to two or more than two, unless otherwise clearly defined. The terms "installation", "connection", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0053] In the description of the embodiments of the present invention, it needs to be understood that the directions or positional relationships indicated by the terms "upper" and "lower" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the embodiments of the present invention.

[0054] In the description of this specification, the description of the terms "one embodiment", "a preferred embodiment", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0055] The above embodiments are only for illustrating the technical idea of ​​the present invention, and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the present invention; any technology not involved in the present invention can be realized by existing technologies.

Claims

1. A laminated composite sealing liner for energy storage chambers, characterized in that: The laminated composite sealing lining comprises at least a dissimilar material bonding layer (2), a bottom metal foil layer (3), a metal bonding layer (4), and an external metal foil layer (5); the dissimilar material bonding layer (2) is applied on the flat inner wall of the concrete layer (1) of the energy storage chamber; the bottom metal foil layer (3) is affixed to the inner wall of the dissimilar material bonding layer (2); the metal bonding layer (4) is applied on the inner wall of the bottom metal foil layer (3); the external metal foil layer (5) is affixed to the inner wall of the metal bonding layer (4); the external metal foil layer (5) is staggered relative to the bottom metal foil layer (3) to cover the joint of the bottom metal foil layer (3).

2. The laminated composite sealing liner for energy storage chamber according to claim 1 is characterized in that: At least one interlayer metal foil layer (6) is provided between the bottom metal foil layer (3) and the outer metal foil layer (5).

3. The laminated composite sealing liner for energy storage chamber according to claim 2 is characterized in that: The interlayer metal foil layer (6) adjacent to the bottom metal foil layer (3) is offset relative to the bottom metal foil layer (3) to cover the joint of the bottom metal foil layer (3) and the outer metal foil layer (5) adjacent to the interlayer metal foil layer (6) is offset relative to the interlayer metal foil layer (6) to cover the joint of the interlayer metal foil layer (6); or the interlayer metal foil layer (6) adjacent to the bottom metal foil layer (3) is offset relative to the bottom metal foil layer (3) to cover the joint of the bottom metal foil layer (3) and the outer metal foil layer (5) adjacent to the interlayer metal foil layer (6) is offset relative to the interlayer metal foil layer (6) to cover the joint of the interlayer metal foil layer (6); and the inner interlayer metal foil layer (6) is offset relative to the outer interlayer metal foil layer (6) to cover the joint of the outer interlayer metal foil layer (6).

4. The laminated composite sealing liner for energy storage chamber according to claim 2 is characterized in that: A metal adhesive layer (4) is arranged between the interlayer metal foil layer (6) and the bottom metal foil layer (3), and between the interlayer metal foil layer (6) and the outer metal foil layer (5); or a metal adhesive layer (4) is arranged between the interlayer metal foil layer (6) and the bottom metal foil layer (3), between the interlayer metal foil layer (6) and the interlayer metal foil layer (6), and between the interlayer metal foil layer (6) and the outer metal foil layer (5).

5. The laminated composite sealing liner for energy storage chamber according to claim 2 is characterized in that: The thickness of the interlayer metal foil layer (6) is not greater than the thickness of the bottom metal foil layer (3) and the thickness of the interlayer metal foil layer (6) is not less than the thickness of the outer metal foil layer (5).

6. The laminated composite sealing liner for energy storage chamber according to claim 1 is characterized in that: The concrete used in the clothing concrete layer (1) is made of cement with a strength grade of C40 or above.

7. The laminated composite sealing liner for energy storage chamber according to claim 1 is characterized in that: The concrete used in the cladding concrete layer (1) is mixed with water glass; or a concrete leveling layer (7) is arranged on the inner wall of the cladding concrete layer (1), and the concrete leveling layer (7) is mixed with water glass.

8. The laminated composite sealing liner for energy storage chamber according to any one of claims 1 to 7, characterized in that: The dissimilar material bonding adhesive used in the dissimilar material bonding adhesive layer (2) can bond stone and metal, or concrete and metal, and the dissimilar material bonding adhesive includes epoxy resin structural adhesive, polyurethane adhesive, acrylate structural adhesive, and silicone sealant; the metal bonding adhesive used in the metal bonding adhesive layer (4) can bond the same metal or dissimilar metals, and the metal bonding adhesive includes epoxy resin structural adhesive, acrylate structural adhesive, silicone structural adhesive, instant glue, and anaerobic structural adhesive.

9. The laminated composite sealing liner for energy storage chamber according to any one of claims 1 to 7, characterized in that: The dissimilar material bonding adhesive used in the dissimilar material bonding adhesive layer (2) is a self-adhesive adhesive; and the metal bonding adhesive used in the metal bonding adhesive layer (4) is a self-adhesive adhesive.

10. The laminated composite sealing liner for energy storage chamber according to any one of claims 1 to 7, characterized in that: The thickness of the different material bonding adhesive layer (2) is 0.1 mm to 8 mm, and the thickness of the metal bonding adhesive layer (4) is 0.1 mm to 3 mm.

11. The laminated composite sealing liner for energy storage chamber according to claim 10, characterized in that: The thickness of the dissimilar material bonding layer (2) is 0.5 mm to 3 mm, and the thickness of the metal bonding layer (4) is 0.1 mm to 1 mm.

12. The laminated composite sealing liner for energy storage chamber according to any one of claims 1 to 7, characterized in that: The metal foil used in the bottom metal foil layer (3) is one of alloy foil, stainless steel foil and aluminum foil, and the metal foil used in the outer metal foil layer (5) is one of alloy foil, stainless steel foil and aluminum foil; the thickness of the bottom metal foil layer (3) is 0.01 mm to 1 mm, and the thickness of the outer metal foil layer (5) is 0.01 mm to 0.5 mm.

13. The laminated composite sealing liner for energy storage chamber according to claim 12, characterized in that: The thickness of the bottom metal foil layer (3) is 0.01 mm to 0.5 mm, and the thickness of the outer metal foil layer (5) is 0.02 mm to 0.3 mm.

14. The laminated composite sealing liner for energy storage chamber according to claim 13, characterized in that: The thickness of the bottom metal foil layer (3) is 0.06 mm to 0.5 mm, and the thickness of the outer metal foil layer (5) is 0.02 mm to 0.02 mm.

15. The laminated composite sealing liner for energy storage chamber according to any one of claims 2 to 5, characterized in that: The metal foil used in the interlayer metal foil layer (6) is one of alloy foil, stainless steel foil and aluminum foil, and the thickness of the interlayer metal foil layer (6) is 0.01 mm to 0.5 mm.

16. The laminated composite sealing liner for energy storage chamber according to claim 15, characterized in that: The thickness of the interlayer metal foil layer (6) is 0.04 mm to 0.2 mm.

17. A construction method for a laminated composite sealing lining for an energy storage chamber, characterized in that: The construction method steps are as follows: A. leveling the inner wall of the cladding concrete layer (1) on the inner wall of the energy storage chamber, or leveling the inner wall of the concrete leveling layer (7) on the inner side of the cladding concrete layer (1); B. Applying a dissimilar material bonding adhesive layer (2) on the flat inner wall of the clothing concrete layer (1) or the flat inner wall of the concrete leveling layer (7); C. Pasting a bottom metal foil layer (3) on the inner wall of the dissimilar material bonding layer (2); D. A metal adhesive layer (4) is applied on the inner wall of the bottom metal foil layer (3); F. An outer metal foil layer (5) is attached to the inner wall of the metal adhesive layer (4), and the outer metal foil layer (5) is offset relative to the bottom metal foil layer (3) to cover the joint of the bottom metal foil layer (3).

18. A construction method for a laminated composite sealing lining for an energy storage chamber, characterized in that: The construction method steps are as follows: A. leveling the inner wall of the clad concrete layer (1) on the inner wall of the energy storage chamber, or leveling the inner wall of the concrete leveling layer (7) on the inner side of the clad concrete layer (1); B. Applying a dissimilar material bonding adhesive layer (2) on the flat inner wall of the clothing concrete layer (1) or the flat inner wall of the concrete leveling layer (7); C. Pasting a bottom metal foil layer (3) on the inner wall of the dissimilar material bonding layer (2); D. A metal adhesive layer (4) is applied on the inner wall of the bottom metal foil layer (3); E. affixing an interlayer metal foil layer (6) on the inner wall of the metal adhesive layer (4), wherein the interlayer metal foil layer (6) is staggered relative to the bottom metal foil layer (3) so as to cover the joint of the bottom metal foil layer (3); F. A metal adhesive layer (4) is applied on the inner wall of the interlayer metal foil layer (6); G. An external metal foil layer (5) is attached to the inner wall of the metal adhesive layer (4), and the external metal foil layer (5) is offset relative to the interlayer metal foil layer (6) to cover the joint of the interlayer metal foil layer (6).

19. The construction method of the laminated composite sealing lining for energy storage chamber according to claim 17 or 18, characterized in that: When the clothing concrete layer (1) in step A has a honeycombed surface, a stainless steel plate with a thickness of 1 mm to 3 mm is arranged on the honeycombed surface.

20. The construction method of the laminated composite sealing lining for energy storage chamber according to claim 18, characterized in that: A plurality of interlayer metal foil layers (6) may also be attached to the inner wall of the metal adhesive layer (4) in step F, and the inner interlayer metal foil layer (6) is staggered relative to the outer interlayer metal foil layer (6) to cover the joint of the outer interlayer metal foil layer (6).

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