Retrofit partition for double-layer storage tank and construction method based on retrofit partition

Abstract

The present invention provides a modified partition for a double-layer storage tank and a construction method based on the modified partition, comprising a partition and a connection assembly, wherein the partition is used to separate the internal space of the storage tank, and the outer peripheral wall of the partition is arranged around the inner peripheral wall of the storage tank, and the connection assembly is used to form a positioning connection between the partition and the inner peripheral wall of the storage tank. In view of the deficiencies of the prior art, the present invention provides a modified partition for a double-layer storage tank and a construction method based on the modified partition, which can separate the internal space of the double-layer storage tank while avoiding damage to the double-layer structure of the storage tank, thereby optimizing the space utilization of the double-layer storage tank.

Description

Technical Field

[0001] The invention relates to a modified partition for a double-layer storage tank and a construction method based on the modified partition. Background Art

[0002] A double-layer storage tank refers to an oil storage tank that is safer and more environmentally friendly than a single-layer pipe. It can effectively prevent oil from leaking out of the storage tank and polluting the surrounding environment. Double-layer storage tanks are commonly used in various gas stations and buried underground to avoid accidents caused by external factors, reduce the occupation of land resources, and reduce the safety distance from adjacent buildings. Double-layer storage tanks usually include a tank body and a storage cavity formed by the hollow tank body. Since the tank body is usually cylindrical, the strength at both ends of the tank body is the highest and gradually weakens toward the middle. Therefore, the storage tank is also provided with a number of support frames that provide radial support force, and the support frames are arranged along the length of the tank. However, due to the different locations of various gas stations and different demands for various oil products, the required reserves of different oil products vary greatly, and limited by the preset underground space of the gas station, only a few large double-layer storage tanks can be set; or due to factors such as freeze welding and other transformation methods that easily damage the double-layer structure of the storage tank, it is difficult to optimize the configuration of the storage space of the gas station. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a modified partition for a double-layer storage tank and a construction method based on the modified partition, which can separate the internal space of the double-layer storage tank while avoiding damage to the double-layer structure of the storage tank, thereby optimizing the space utilization of the double-layer storage tank.

[0004] To achieve the above-mentioned purpose, the present invention provides a modified partition for a double-layer storage tank, including a partition and a connecting assembly, wherein the partition is used to divide the internal space of the storage tank, and the outer peripheral wall of the partition is arranged around the inner peripheral wall of the storage tank, and the connecting assembly is used to form a positioning connection between the partition and the inner peripheral wall of the storage tank.

[0005] The advantages of adopting the above technical solution are: by arranging a partition in the tank body, and the outer peripheral wall of the partition is arranged around the inner peripheral wall of the storage tank and forms a partition with it to separate the space inside the storage tank, and by arranging the partition and the connecting component in the storage tank, a double-layer storage tank is separated into multiple spaces for accommodating different oil products, and the reserve amount of different oil products in the gas station can be optimized according to the actual consumption, and the partition and the inner peripheral wall of the storage tank are positioned and connected by the connecting component, avoiding the double-layer structure modification methods such as frozen welding that are easy to damage the double-layer storage tank.

[0006] The present invention can be further configured as follows: the partition is composed of a first plate and a plurality of second plates, the first plate is arranged in a polygonal shape, the plurality of second plates are arranged between the first plate and the inner circumferential wall of the storage tank and are respectively connected to the two, and the second plates are arranged corresponding to the number of edges of the first plate.

[0007] Through further configuration, the partition is composed of a polygonal first plate and a plurality of second plates connecting the first plate and the inner wall of the tank, which facilitates the process of transporting the partition into the tank, and the second plates are arranged corresponding to the number of edges of the first plates, which facilitates the modification of existing single-layer tanks.

[0008] The present invention may be further configured as follows: the first plate member is arranged at one side of the axial direction of the connection between the partition and the storage tank.

[0009] Through further configuration, the partition as a whole is approximately in the shape of an arch convex toward one side of the partition. When subjected to oil pressure, several adjacent components can share the pressure with each other to ensure the strength of the partition.

[0010] The present invention can be further configured as follows: a recess is formed between the first plate and the plurality of second plates, the recess is located on the other side of the partition and is provided with a plurality of reinforcing ribs, and the plurality of reinforcing ribs are respectively provided corresponding to the connection between the first plate and the plurality of second plates and the plurality of second plates.

[0011] Through further settings, on the one hand, the contact area between the first plate and the plurality of second plates and between the plurality of second plates is increased, and on the other hand, a connecting structure can be set between adjacent reinforcing ribs, thereby strengthening the strength of the partition while strengthening the connection strength of the first plate and the plurality of second plates and between the plurality of second plates, and at the same time preventing oil from seeping out of the gaps between adjacent plates.

[0012] The present invention may be further configured as follows: the connection assembly includes a filling layer, the filling layer is filled in the gap between the partition and the storage tank, and forms two smooth surfaces on both sides of the partition close to the inner wall of the storage tank.

[0013] Through further configuration, a filling layer is used to fill the gap between the partition and the tank to prevent oil from seeping through the gap between the partition and the tank, causing mutual contamination of oils in different tanks, and by separately bonding the filling layers of the partition and the tank, the connection strength between the two is enhanced, and the two sides of the partition form two smooth surfaces close to the inner wall of the tank, which is convenient for the subsequent setting of anti-seepage components.

[0014] The present invention may be further configured as follows: the connection assembly includes a plurality of support rods, the plurality of support rods are respectively arranged at both sides of the partition, and the two ends of the support rods are respectively abutted against the partition and the storage tank.

[0015] Through further arrangement, the connection strength of the partition is ensured by a plurality of support rods located at both sides of the partition and respectively abutting against the partition and the tank support frame.

[0016] The present invention may be further configured such that: the support rod can be telescopically positioned.

[0017] Through further configuration, after the partition is installed, the support rod is extended to abut against the tank support frame, and the support rod can be kept retracted during the transportation and installation of the partition to avoid interference from the support rod during the transportation and installation of the partition.

[0018] The present invention can be further configured as follows: an anti-seepage component is provided on the partition, the anti-seepage component includes a detection component, a closed detection space is formed between the anti-seepage component and the partition, the detection component is provided in the detection space, and the detection component is used to detect air pressure changes.

[0019] Through further arrangements, a closed detection space is formed between the anti-seepage component and the partition, and a detection component is provided in the closed detection space for detecting changes in air pressure therein. When there is a possibility of oil penetration, the air pressure in the detection space changes and sends out a signal, thereby issuing an early warning in time, making it easier for staff to formulate plans and conduct maintenance in a timely manner.

[0020] The present invention can be further configured as follows: the anti-seepage component includes a structural plate, a first coating, and a second coating; the structural plate includes a plurality of evenly distributed support portions, the support portions are arranged toward the partition, and the plurality of support portions are arranged at intervals; the first coating covers the structural plate, the second coating is arranged between the structural plate and the partition, and the detection space is composed of the first coating, the structural plate, and the second coating.

[0021] Through further configuration, a number of evenly distributed support parts are provided on the structural plate, and the evenly distributed support parts are spaced to form gaps evenly distributed on the structural plate. On the one hand, the evenly distributed support parts ensure the stability of the support, and on the other hand, through these gaps, it can be ensured that the detection space not only extends evenly to all parts of the partition, but also ensures connectivity, so that the detection component can fully and completely understand the status of the corrosion-resistant coating, and the first coating and the second coating can ensure the stability of the detection space through the corrosion resistance or strength of their own materials, and better withstand the corrosion and pressure from the oil.

[0022] To achieve the above object, the present invention provides a double-layer storage tank construction method based on modified partitions, comprising the following steps:

[0023] Step 1: Replace the gas inside the storage tank to ensure that the explosive gas content LEL drops below 10%, and then proceed to step 2;

[0024] Step 2: Clean the inside of the tank, remove the oil and rust in the tank, and air dry it, then proceed to step 3;

[0025] Step 3: split the partition into a first plate and a plurality of second plates, and transport them to a storage tank for assembly, and then proceed to step 4;

[0026] Step 4: operate the support rod to extend until it contacts the partition and the storage tank respectively and then positions them, so that the support rod supports the partition, and then proceed to step 5;

[0027] Step 5: Fill and cover the filling layer at the connection between the partition and the storage tank to ensure that the gap between the partition and the storage tank is filled and a smooth surface is formed at the connection between the two, and then proceed to step 6;

[0028] Step 6: Cover the partition and the connection between the partition and the tank with a second coating, and then proceed to step 7;

[0029] Step seven: Arrange the structural layer and the detection member on the second coating, and then proceed to step eight;

[0030] Step eight: applying a first coating on the structural layer, so that a detection space is formed between the first coating, the structural layer and the second coating, and then proceeding to step nine;

[0031] Step 9: Conduct hardness, adhesion, thickness and leakage tests.

[0032] The advantages of adopting the above technical solution are: through the above process, a double-layer storage tank can be separated into several spaces for accommodating different oil products, which is convenient for optimizing the reserve volume of different oil products at the gas station, and the connection assembly constitutes the positioning connection between the partition and the inner wall of the storage tank, avoiding the double-layer structure modification methods such as frost welding that are easy to damage the double-layer storage tank, and an anti-seepage component is set on the partition, which can detect the status of the partition in real time, and can deal with it in time when leakage occurs, avoiding mutual contamination between oil products. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 Schematic diagram of the internal structure of an embodiment of the present invention Figure 1 ;

[0034] Figure 2 Schematic diagram of the internal structure of an embodiment of the present invention Figure 2 ;

[0035] Figure 3 The three-dimensional structure of the partition in the embodiment of the present invention Figure 1 ;

[0036] Figure 4 The three-dimensional structure of the partition in the embodiment of the present invention Figure 2 ;

[0037] Figure 5 For the embodiment of the present invention Figure 1 Schematic diagram of the coating structure in part a;

[0038] Figure 6 For the embodiment of the present invention Figure 1 Schematic diagram of the coating structure in part b;

[0039] Figure 7 For the embodiment of the present invention Figure 1 Schematic diagram of the coating structure in part c;

[0040] Figure 8 For the embodiment of the present invention Figure 1 Schematic diagram of the coating structure in part d;

[0041] Fig. 9 It is a flowchart of the construction method of an embodiment of the present invention;

[0042] Among them: storage tank 1; support frame 11; manhole 12; partition 2; first plate 21; third plate 211; second plate 22; recess 23; reinforcing rib 24; connecting component 3; filling layer 31; smooth surface 311; support rod 32; anti-seepage component 4; detection component 41; copper tube 411; detection space 42; accommodating cavity 421; structural plate 43; support part 431; first coating 44; second coating 45. DETAILED DESCRIPTION

[0043] An embodiment of a modified partition for a double-layer storage tank of the present invention is as follows: Figure 1-8As shown: it includes a storage tank 1 for transformation, in which a plurality of support frames 11 and a manhole 12 are arranged. In the storage tank 1 of this embodiment, a partition 2 and a connecting assembly are arranged to separate the internal space of the storage tank 1, and the oil storage chamber is divided into two independent spaces. Of course, multiple partitions 2 and connecting assemblies can also be arranged according to actual needs. The outer peripheral wall of the partition 2 is arranged around the inner peripheral wall of the storage tank 1, and the connecting assembly is used to form a positioning connection between the partition 2 and the inner peripheral wall of the storage tank 1. The partition 2 is composed of a first plate 21 and a plurality of second plates 22. The first plate 21 is arranged in a polygonal shape, and the plurality of second plates 22 are arranged between the first plate 21 and the inner peripheral wall of the storage tank 1 and are respectively connected to the two. The second plate 22 is arranged corresponding to the number of edges of the first plate 21. In this embodiment, the first plate 21 is a regular hexagon, and the first plate 21 is formed by splicing two third plates 211, and the second plates 22 are correspondingly set to six. Of course, in actual use, we can further adjust the number of edges of the first plate 21 and the number of second plates 22 according to the size of the manhole 12 of the storage tank 1. The first plate 21 is arranged at one side of the axial connection between the partition 2 and the storage tank 1. A recess 23 is formed between the first plate 21 and the plurality of second plates 22. The recess 23 is located on the other side of the partition 2 and is provided with a plurality of reinforcing ribs 24. The plurality of reinforcing ribs 24 are respectively arranged at the connection between the first plate 21 and the plurality of second plates 22 and the plurality of second plates 22. The connection between the two third plates 211 is also provided with reinforcing ribs 24. In this embodiment, the plurality of reinforcing ribs 24 are penetrated by a plurality of bolts to ensure the connection strength between the plurality of second plates 22 and the two third plates 211. The connection assembly 3 includes a filling layer 31, which is filled in the gap between the partition 2 and the storage tank 1, and forms two smooth surfaces 311 on both sides of the partition 2 near the inner wall of the storage tank 1. The filling layer 31 is a certain proportion of epoxy resin mixed with silicon dioxide, and the anti-corrosion ability of the filling layer is guaranteed by the epoxy resin, and the support structure is formed by the silicon dioxide bonded by the epoxy resin. Of course, materials with the same function or similar properties can also be used. The filling layer 31 is also filled in the connection between the second plate members 22 and the two third plate members 221, ensuring the smoothness of the connection between the second plate members 22 and the two third plate members 211, which is convenient for the subsequent coating. In this embodiment, a support frame 11 is provided in the storage tank, and the partition 2 is provided between adjacent storage tank support frames 11. The connection assembly 3 includes a plurality of support rods 32, and the plurality of support rods 32 are respectively provided at both sides of the partition 2, and the two ends of the support rods 32 are respectively abutted on the partition 2 and the storage tank support frame 11.In this embodiment, one end of the support rod 32 is integrally formed with the partition 2, and the partition 2 and the support rod 32 are also covered with a filling layer 31 that makes the connection between the two form an arc surface. Of course, on some storage tanks where no support frame is set, we can also connect the support rod 32 to the reinforcing ribs or the support points constructed by epoxy resin to ensure strength. In this embodiment, the storage tank support frame 11 is set in an equilateral triangle, and the support rods 32 are twelve, and the twelve support rods 32 are evenly arranged on both sides of the partition 2, and the six support rods 32 located on either side of the partition 2 are all arranged at the three vertices of the two support frames 11, and the two support rods 32 connected to the same support frame 11 vertex are respectively connected to the two second plates 22 adjacent to the vertex of the support frame 11. The support rod 32 can be telescopically positioned, and the telescopic positioning setting means that the support rod 32 can be positioned after being extended or shortened, which can be that the support rod is telescopic by two sliding sleeve rods, and the subsequent positioning is formed by screwing or clamping between the two. The partition 2 is provided with an anti-seepage component 4, the anti-seepage component 4 includes a detection component 41, a closed detection space 42 is formed between the anti-seepage component 4 and the partition 2, the detection component 41 is arranged in the detection space 42, and the detection component 41 is used to detect air pressure changes. The anti-seepage component 4 includes a structural plate 43, a first coating 44, and a second coating 45. The structural plate 43 includes a plurality of evenly distributed support portions 431, the support portions 431 are arranged toward the partition 2, and the plurality of support portions 431 are arranged at intervals, the first coating 44 covers the structural plate 43, the second coating 45 is arranged between the structural plate 43 and the partition 2, and the detection space 42 is composed of the first coating 44, the structural plate 43, and the second coating 45. In this embodiment, the anti-seepage component 4 is arranged on one side of the partition 2. Of course, the anti-seepage component 4 can also be arranged on the other side of the partition 2 to further enhance the anti-seepage ability of the structural plate 43. When the anti-seepage component 4 is arranged on the other side of the partition 2, the filling layer 31 needs to be applied between the second plate members 22 and the two third plate members 221 and their reinforcing ribs 24 to ensure that the arc surface is formed between the second plate members 22 and the two third plate members 221 and their reinforcing ribs 24, which is convenient for the coverage of the second coating 45. The structural plate 43 is composed of a plurality of aluminum plates, and the plurality of aluminum plates are spaced to form a receiving cavity 421. The detection member 41 is arranged in the receiving cavity 421. The detection member 41 includes a copper tube 411 and an exhaust pipe. The exhaust pipe is a conventional pipe and is not shown in the drawings. One end of the copper tube 411 and the exhaust pipe is laid along the receiving cavity 421, and the other end of the copper tube 411 and the exhaust pipe passes through the storage tank 1 and is connected to the main machine of the detection member and the vacuum pump respectively.The first coating 44 is preferably made of a certain ratio of epoxy resin mixed with glass fiber material. Of course, other resin materials with certain strength and corrosion resistance can also be selected. The high strength and corrosion resistance of the material can better protect against pressure and corrosion from oil products. The second coating 45 is preferably made of a certain ratio of epoxy resin and oil-resistant material. Of course, other materials with strong water resistance and corrosion resistance can also be selected. The water resistance and corrosion resistance of the material can be better protected.

[0044] The present invention is a double-layer storage tank construction method based on the modified partition. Fig. 9 As shown, the following steps are included:

[0045] Step 1: Replace the gas inside the storage tank to ensure that the explosive gas content LEL drops below 10%. On this basis, when the combustible gas LEL is 0% and the oxygen content is 19.5-23.5%, it will enter the best state, and keep the ventilation inside the tank, and then enter step 2;

[0046] Step 2: Clean the inside of the tank, remove the oil and rust in the tank, and air dry it, then proceed to step 3;

[0047] Step 3: split the partition into a first plate and a plurality of second plates. If the manhole is small, the first plate can also be cut into a plurality of sub-components and transported to the storage tank. After the plurality of first plates and the plurality of second plates are matched, the assembly is completed by fastening the reinforcing ribs with bolts, and then proceed to step 4;

[0048] Step 4: Extend the support rod until it contacts the partition and the storage tank respectively and then positions them, so that the support rod supports the partition. When support rods are provided on both sides of the partition, a channel should be left on the partition. After the support rods are extended and positioned, the partition is assembled, and then step 5 is entered;

[0049] Step 5: Fill and cover the filling layer at the connection between the partition and the storage tank to ensure that the gap between the partition and the storage tank is filled and a smooth surface is formed at the connection between the two, and then proceed to step 6;

[0050] Step 6: Cover the partition and the connection between the partition and the tank with a second coating, and then proceed to step 7;

[0051] Step seven: Arrange the structural layer and the detection member on the second coating, and then proceed to step eight;

[0052] Step eight: applying a first coating on the structural layer, so that a detection space is formed between the first coating, the structural layer and the second coating, and then proceeding to step nine;

[0053] Step 9: Conduct hardness, adhesion, thickness and leakage tests.

[0054] The above example is only one preferred specific example of the present invention. Common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention are all included in the protection scope of the present invention.

Claims

1. A construction method for a modified partition of a double-layer storage tank, characterized in that: The structure of the modified partition includes a partition and a connecting component, the partition is used to separate the internal space of the storage tank, and the outer peripheral wall of the partition is arranged around the inner peripheral wall of the storage tank, the connecting component is used to form a positioning connection between the partition and the inner peripheral wall of the storage tank, the partition is provided with an anti-seepage component, the anti-seepage component includes a detection component, a closed detection space is formed between the anti-seepage component and the partition, the detection component is arranged in the detection space, and the detection component is used to detect air pressure changes, the anti-seepage component includes a structural plate, a first coating, and a second coating, the structural plate includes a plurality of evenly distributed support parts, the support parts are arranged toward the partition direction, and the plurality of support parts are spaced apart, the first coating covers the structural plate, the second coating is arranged between the structural plate and the partition, the detection space is composed of the first coating, the structural plate and the second coating, the partition is composed of the first plate and the plurality of second coatings The second plate is arranged between the first plate and the inner wall of the storage tank and is respectively connected to the first plate and the inner wall of the storage tank. The second plate is arranged corresponding to the number of edges of the first plate. The first plate is arranged on one side of the axial connection between the partition and the storage tank. A recess is formed between the first plate and the second plate. The recess is located on the other side of the partition and is provided with a plurality of reinforcing ribs. The plurality of reinforcing ribs are respectively arranged corresponding to the connection between the first plate and the second plate and the connection between the second plate. The connection component includes a filling layer. The filling layer is filled in the gap between the partition and the storage tank and forms two smooth surfaces on both sides of the partition near the inner wall of the storage tank. The connection component includes a plurality of support rods. The plurality of support rods are respectively arranged on both sides of the partition, and the two ends of the support rods are respectively abutted on the partition and the storage tank, and the support rods can be telescopically positioned. It also includes the following steps: Step 1: Replace the gas inside the storage tank to ensure that the explosive gas content LEL drops below 10%, and then proceed to step 2; Step 2: Clean the inside of the tank, remove the oil and rust in the tank, and air dry it, then proceed to step 3; Step 3: split the partition into a first plate and a plurality of second plates, and transport them to a storage tank for assembly, and then proceed to step 4; Step 4: operate the support rod to extend until it contacts the partition and the storage tank respectively and then positions them, so that the support rod supports the partition, and then proceed to step 5; Step 5: Fill and cover the filling layer at the connection between the partition and the storage tank to ensure that the gap between the partition and the storage tank is filled and a smooth surface is formed at the connection between the two, and then proceed to step 6; Step 6: Cover the partition and the connection between the partition and the tank with a second coating, and then proceed to step 7; Step 7; Arranging a structural layer and a detection piece on the second coating layer, and then proceeding to step eight; Step 8; Apply a first coating on the structural layer, so that a detection space is formed between the first coating, the structural layer and the second coating, and then proceed to step nine; Step 9: Conduct hardness, adhesion, thickness and leakage tests.

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