CN109319320B - Steel oil tank lining structure and lining transformation process - Google Patents
Steel oil tank lining structure and lining transformation process Download PDFInfo
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- CN109319320B CN109319320B CN201811267965.1A CN201811267965A CN109319320B CN 109319320 B CN109319320 B CN 109319320B CN 201811267965 A CN201811267965 A CN 201811267965A CN 109319320 B CN109319320 B CN 109319320B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/02—Wall construction
- B65D90/022—Laminated structures
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/48—Arrangements of indicating or measuring devices
- B65D90/50—Arrangements of indicating or measuring devices of leakage-indicating devices
- B65D90/505—Arrangements of indicating or measuring devices of leakage-indicating devices comprising porous spaces or porous layers in walls
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2590/00—Component parts, details or accessories for large containers
- B65D2590/02—Wall construction
- B65D2590/023—Special coating or treatment of the internal surface
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a steel oil tank lining structure, wherein the outer side of a conductive coating is bonded with the inner side of an epoxy resin glass fiber mixed inner layer, the outer side of the epoxy resin glass fiber mixed outer layer is bonded with the inner side of a bottom coating, the outer side of the outer side bonded bottom coating is bonded with the inner side of a steel tank wall, the outer side of the epoxy resin glass fiber mixed inner layer is bonded with the inner side of a second lining layer, the outer side of the second lining layer is bonded with the inner side of a honeycomb core layer, the outer side of the honeycomb core layer is bonded with the inner side of a first lining layer, and the outer side of the first lining layer is bonded with the inner side of the epoxy; and the ports at the inner sides of all the honeycomb grooves of the honeycomb core layer are sealed by the second lining cloth layer, and the ports at the outer sides of all the honeycomb grooves are sealed by the first lining cloth layer. The invention has higher strength.
Description
Technical Field
The invention relates to the field of environment-friendly modification of gas stations, in particular to a steel oil tank lining structure and a lining modification process.
Background
The inner lining reforming technology of the filling station steel tank relies on the steel structure of the original buried oil tank, and a composite material outer layer, a composite material middle layer and a composite material inner layer are sequentially manufactured in the inner part of the steel structure to form a complete multilayer structure. The improved oil tank has the same performance as an FF (glass fiber reinforced plastic composite material double-layer oil tank) double-layer oil tank, and the structural strength is better. In addition, in the traditional manual reconstruction construction method, 2-3 people need to enter a buried horizontal oil tank through a manhole, the glass fiber cloth is paved on the inner surface of the oil tank, and a roller is stained with resin and coated on the inner surface of the oil tank to enable the glass fiber to be soaked in the resin. This process consumes a lot of manpower and material resources and is inefficient. In the process of brushing resin by rolling, styrene and other organic volatile matters with higher concentration are accompanied in the relatively closed oil tank, so that certain damage can be caused to the human body, and the construction safety factor is low.
Disclosure of Invention
The invention aims to provide a steel oil tank lining structure and a lining transformation process, wherein the lining structure has higher strength and higher production efficiency.
In order to achieve the purpose, the invention designs a steel oil tank lining structure, which is characterized in that: the composite material comprises a steel tank wall, a bottom coating, an epoxy resin glass fiber mixed outer layer, an epoxy resin glass fiber mixed inner layer and a conductive coating, wherein the outer side of the conductive coating is bonded with the inner side of the epoxy resin glass fiber mixed inner layer, the outer side of the epoxy resin glass fiber mixed outer layer is bonded with the inner side of the bottom coating, the outer side of the bottom coating is bonded with the inner side of the steel tank wall, the composite material further comprises a first lining layer, a honeycomb core layer and a second lining layer, the outer side of the epoxy resin glass fiber mixed inner layer is bonded with the inner side of the second lining layer, the outer side of the second lining layer is bonded with the inner side of the honeycomb core layer, the outer side of the honeycomb core layer is bonded with the inner side of the first lining layer, and the outer side of the; and the ports at the inner side of each honeycomb groove of the honeycomb core layer are sealed by a second lining cloth layer, and the ports at the outer side of each honeycomb groove are sealed by a first lining cloth layer.
A transformation process of a steel oil tank lining structure comprises the following characteristics:
step 1: forcibly ventilating and detecting the inside of the oil tank, and reducing the concentration of residual oil gas in the oil tank to be below the explosion limit;
step 2: after the tank is cleaned, the inner surface of the oil tank is derusted;
and step 3: spraying an epoxy primer on the inner surface of the oil tank to form a primer layer, and repairing the inner surface of the oil tank by using the epoxy primer;
and 4, step 4: spraying an epoxy resin glass fiber mixed outer layer on the bottom coating;
and 5: manufacturing an intermediate gap layer, wherein the intermediate gap layer adopts a honeycomb core layer with the thickness of 1-3.5 mm, two sides of the honeycomb core layer are respectively sealed by a first lining cloth layer and a second lining cloth layer, oil body leakage detection media are filled in each honeycomb groove of the honeycomb core layer, and the first lining cloth layer is bonded with the epoxy resin glass fiber mixed outer layer;
step 6: spraying an epoxy resin glass fiber mixed inner layer on the second lining cloth layer;
and 7: and brushing or spraying a conductive coating on the epoxy resin glass fiber mixed inner layer.
In the invention, the middle gap layer adopts a honeycomb core layer made of aluminum or paper, the ports at the inner sides of all honeycomb grooves of the honeycomb core layer are sealed by the second lining cloth layer, and the ports at the outer sides of all the honeycomb grooves are sealed by the first lining cloth layer. The integral structural strength of the steel oil tank lining is improved. Compared with the traditional lining middle layer structure, the traditional structure adopts the 3D fabric or the aluminum plate with the convex points as shown in the figure, the pressure bearing capacity is not high, the supporting effect on the outer layer tank and the inner layer tank in the lining structure is limited, and the pressure bearing capacity is greatly improved by using the honeycomb structure provided by the invention.
The process method provided by the invention is characterized in that the process steps of removing rust, manufacturing the outer layer of the epoxy resin glass fiber mixture, manufacturing the inner layer of the epoxy resin glass fiber mixture and the like are automatically improved aiming at the improvement of the middle gap layer. And adjusting and modifying related process parameters. Thereby realizing the safety and high efficiency of the transformation process. In the prior art, a glass fiber mat is laid manually, then resin is pasted manually to enable the resin to permeate the glass fiber mat, and a structural body is formed after the resin is cured. The process is characterized in that a mechanical arm is used for automatically spraying a mixture of resin and chopped glass fiber, and the mixture is finally cured to form a structural body.
In addition, the novel intermediate layer material (honeycomb material) is used, so that the laying and forming are convenient, and the processing efficiency is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a process flow diagram of the present invention;
fig. 3 is a schematic structural view of a honeycomb core layer according to the present invention;
FIG. 4 is a schematic structural diagram of a middle layer of a conventional 3D fabric;
fig. 5 is a schematic structural diagram of a conventional 3D aluminum foil intermediate layer.
Wherein, 1-steel tank wall, 2-bottom coat, 3-epoxy resin glass fiber mixed outer layer, 4-first lining cloth layer, 5-honeycomb core layer, 5.1-honeycomb groove, 5.2-through hole, 6-second lining cloth layer, 7-epoxy resin glass fiber mixed inner layer, 8-conductive coating
Detailed Description
The invention is described in further detail below with reference to the following figures and specific examples:
the invention relates to a steel oil tank lining structure, as shown in figures 1 and 3, which comprises a steel tank wall 1, a bottom coating layer 2, an epoxy resin glass fiber mixed outer layer 3, an epoxy resin glass fiber mixed inner layer 7 and a conductive coating layer 8, wherein the outer side of the conductive coating layer 8 is bonded with the inner side of the epoxy resin glass fiber mixed inner layer 7, the outer side of the epoxy resin glass fiber mixed outer layer 3 is bonded with the inner side of the bottom coating layer 2, the outer side of the bottom coating layer 2 is bonded with the inner side of the steel tank wall 1 through resin and adhesive, the steel oil tank lining structure further comprises a first lining layer 4, a honeycomb core layer 5 and a second lining layer 6, the outer side of the epoxy resin glass fiber mixed inner layer 7 is bonded with the inner side of the second lining layer 6, the outer side of the second lining layer 6 is bonded with the inner side of the honeycomb core layer 5 through resin and adhesive, the outer side of the honeycomb core layer 5 is bonded with the inner, the outer side of the first lining cloth layer 4 is bonded with the inner side of the epoxy resin glass fiber mixed outer layer 3; the inner side port of each honeycomb groove 5.1 of the honeycomb core layer 5 is sealed by a second lining layer 6, and the outer side port of each honeycomb groove 5.1 is sealed by a first lining layer 4.
Among the above-mentioned technical scheme, steel tank wall 1 has guaranteed that whole inside lining structure has certain intensity. The primer layer 2 improves the adhesion of the epoxy resin glass fiber mixed outer layer 3 to the steel tank wall 1. The first lining cloth layer 4, the honeycomb core layer 5, the second lining cloth layer 6, the epoxy resin glass fiber mixed outer layer 3 and the epoxy resin glass fiber mixed inner layer 7 are firmly bonded by resin and adhesive, so that the whole structure has higher structural strength. The epoxy resin glass fiber mixed inner layer 7 enables the whole lining structure to have extremely high corrosion resistance, and the conducting layer 8 enables the whole structure to have good static conducting performance, so that static aggregation is prevented.
In the above technical solution, each of the honeycomb grooves 5.1 of the honeycomb core layer 5 is filled with an oil body leakage detection medium. The oil body leakage detection medium is compressed air or calcium chloride solution. The external equipment determines whether the inner lining has oil body leakage or not through the detection of the oil body leakage detection medium. The pressure change of the medium can be detected, and the change of the substance composition in the medium can also be detected to determine whether the oil leakage condition exists.
In the technical scheme, the epoxy resin glass fiber mixed outer layer 3 and the epoxy resin glass fiber mixed inner layer 7 are used for corrosion prevention and leakage prevention of the outer tank wall of the oil tank.
In the technical scheme, the thickness range of the honeycomb core layer 5 is 1-3.5 mm. The size range is convenient for manufacturing a through hole structure on the honeycomb core, and the honeycomb core is convenient to lay on a curved surface.
In the above technical solution, the primer layer 2 is an epoxy primer (preferably 0.5mm) with a thickness of 0.4 to 0.6mm, the thickness range of the epoxy resin glass fiber mixed outer layer 3 and the epoxy resin glass fiber mixed inner layer 7 is 3 to 5mm (preferably 4mm), and the thickness range of the conductive coating 8 is 0.1 to 0.3mm (preferably 0.2 mm).
In the above technical scheme, the honeycomb core layer 5 is an aluminum honeycomb core layer or a paper honeycomb core layer.
In the above technical solution, the side wall of each honeycomb groove 5.1 is provided with a through hole 5.2, and the adjacent honeycomb grooves 5.1 are respectively communicated through the corresponding through holes 5.2, as shown in fig. 3. The through-openings 5.2 facilitate the flow of the filling medium. The good circulation makes the monitoring point only need set up in one of oil tank, the whole detection of being convenient for.
A process for reforming the lining structure of steel oil tank, as shown in figure 2, includes the following features:
step 1: forcibly ventilating and detecting the inside of the oil tank, and reducing the concentration of residual oil gas in the oil tank to be below the explosion limit; if the oil tank has a supporting structure inside, the supporting structure is allowed to be removed after the intensity is checked;
step 2: after the tank is cleaned, the inner surface of the oil tank is derusted;
and step 3: spraying oxygen primer with the thickness of about 0.5mm on the inner surface of the oil tank to form a primer layer 2, increasing the resin bonding force, and repairing the inner surface of the oil tank by using the epoxy primer;
and 4, step 4: the mixture of epoxy resin and glass fiber is automatically sprayed by a mechanical arm in a spraying mode, the resin can also be directly sprayed and cured, and an epoxy resin glass fiber mixed outer layer 3 with the thickness of about 4mm is formed on the bottom coating 2;
and 5: manufacturing an intermediate gap layer, wherein the intermediate gap layer adopts a honeycomb core layer 5 with the thickness of 1-3.5 mm, two sides of the honeycomb core layer 5 are respectively sealed through a first lining cloth layer 4 and a second lining cloth layer 6, oil body leakage detection media are filled in each honeycomb groove 5.1 of the honeycomb core layer 5, and the first lining cloth layer 4 is bonded with the epoxy resin glass fiber mixed outer layer 3;
step 6: automatically spraying a mixture of epoxy resin and glass fiber on the second lining cloth layer 6 by using a mechanical arm in a spraying mode, curing, and forming a sprayed epoxy resin glass fiber mixed inner layer 7 with the thickness of about 4 mm;
and 7: and coating or spraying a conductive coating on the epoxy resin glass fiber mixed inner layer 7.
The concentration of the residual oil gas in the oil tank in the step 1 of the technical scheme is lower than 1%.
In the step 2 of the technical scheme, after the tank is cleaned, the mechanical arm is used for integrating rust removal equipment, sand and high-pressure water are mixed, automatic spraying rust removal is carried out on the inner surface of the oil tank, and the rust removal process is free of sparks, less in dust and easy to clean;
and 3, measuring the pull-off force between the bottom coating 2 and the inner surface of the oil tank, ensuring that the pull-off force is more than or equal to 5.5MPa, and ensuring that the formed lining structure does not fall off from the original steel tank.
Details not described in this specification are within the skill of the art that are well known to those skilled in the art.
Claims (7)
1. A transformation process of a steel oil tank lining structure comprises a steel tank wall (1), a bottom coating (2), an epoxy resin glass fiber mixed outer layer (3), an epoxy resin glass fiber mixed inner layer (7) and a conductive coating (8), wherein the outer side of the conductive coating (8) is bonded with the inner side of the epoxy resin glass fiber mixed inner layer (7), the outer side of the epoxy resin glass fiber mixed outer layer (3) is bonded with the inner side of the bottom coating (2), and the outer side of the bottom coating (2) is bonded with the inner side of the steel tank wall (1), and is characterized by further comprising a first lining layer (4), a honeycomb core layer (5) and a second lining layer (6), wherein the outer side of the epoxy resin glass fiber mixed inner layer (7) is bonded with the inner side of the second lining layer (6), the outer side of the second lining layer (6) is bonded with the inner side of the honeycomb core layer (5), and the outer side of the honeycomb core layer (5) is bonded with the inner side of the first lining layer (4), the outer side of the first lining cloth layer (4) is bonded with the inner side of the epoxy resin glass fiber mixed outer layer (3); the inner side ports of the honeycomb grooves (5.1) of the honeycomb core layer (5) are sealed by second lining layers (6), and the outer side ports of the honeycomb grooves (5.1) are sealed by first lining layers (4);
it is characterized in that the method comprises the following characteristics:
step 1: forcibly ventilating and detecting the inside of the oil tank, and reducing the concentration of residual oil gas in the oil tank to be below the explosion limit;
step 2: after the tank is cleaned, the inner surface of the oil tank is derusted;
and step 3: spraying epoxy primer on the inner surface of the oil tank to form a primer layer (2), and repairing the inner surface of the oil tank by using the epoxy primer;
and 4, step 4: spraying an epoxy resin glass fiber mixed outer layer (3) on the base coat (2);
and 5: manufacturing an intermediate gap layer, wherein the intermediate gap layer adopts a honeycomb core layer (5) with the thickness of 1-3.5 mm, two sides of the honeycomb core layer (5) are respectively sealed through a first lining cloth layer (4) and a second lining cloth layer (6), oil body leakage detection media are filled in each honeycomb groove (5.1) of the honeycomb core layer (5), and the first lining cloth layer (4) is bonded with the epoxy resin glass fiber mixed outer layer (3);
step 6: spraying an epoxy resin glass fiber mixed inner layer (7) on the second lining cloth layer (6);
and 7: coating or spraying a conductive coating on the epoxy resin glass fiber mixed inner layer (7);
in the step 2, after the tank is cleaned, the mechanical arm is used for integrating rust removal equipment, sand and high-pressure water are mixed, and automatic spraying rust removal is carried out on the inner surface of the oil tank;
in the step 3, the primer layer (2) is 0.4-0.6 mm epoxy primer, and the pull-off force between the primer layer (2) and the inner surface of the oil tank is measured to ensure that the pull-off force is more than or equal to 5.5 MPa.
2. The retrofitting process according to claim 1, characterized in that: and oil body leakage detection media are filled in each honeycomb groove (5.1) of the honeycomb core layer (5).
3. The retrofitting process according to claim 2, characterized in that: the oil body leakage detection medium is compressed air or calcium chloride solution.
4. The retrofitting process according to claim 1, characterized in that: the thickness range of the epoxy resin glass fiber mixed outer layer (3) and the epoxy resin glass fiber mixed inner layer (7) is 3-5 mm, and the thickness range of the conductive coating (8) is 0.1-0.3 mm.
5. The retrofitting process according to claim 1, characterized in that: the honeycomb core layer (5) is an aluminum honeycomb core layer or a paper honeycomb core layer.
6. The retrofitting process according to claim 2, characterized in that: each honeycomb groove (5.1) lateral wall all is equipped with perforating hole (5.2), and adjacent honeycomb groove (5.1) communicates through corresponding perforating hole (5.2) respectively.
7. The process for modifying the lining structure of a steel tank as claimed in claim 1, wherein: the concentration of residual oil gas in the oil tank in the step 1 is lower than 1%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811267965.1A CN109319320B (en) | 2018-10-29 | 2018-10-29 | Steel oil tank lining structure and lining transformation process |
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| CN201811267965.1A CN109319320B (en) | 2018-10-29 | 2018-10-29 | Steel oil tank lining structure and lining transformation process |
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| CN109319320B true CN109319320B (en) | 2020-06-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110015518A (en) * | 2019-05-14 | 2019-07-16 | 河北澳科中意环保科技有限公司 | A kind of reinforcing oil storage tank and oil tank reinforcement process |
| CN111717556A (en) * | 2020-06-23 | 2020-09-29 | 湖北吉奥特安全科技有限公司 | Construction process for preventing leakage of oil tank |
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| JPH06219493A (en) * | 1993-01-19 | 1994-08-09 | Shibazaki:Kk | Unit panel for assembling water tank |
| CN107284887A (en) * | 2017-06-16 | 2017-10-24 | 华东理工大学华昌聚合物有限公司 | A kind of underground oil tank of gasoline station inner lining structure and its construction method |
| CN107600764A (en) * | 2017-08-31 | 2018-01-19 | 北京中储能能源设备有限公司 | The sunken tankers lining structure and its technique of a kind of independent bearing |
| CN207417621U (en) * | 2017-08-31 | 2018-05-29 | 戴熙平 | Double-deck buried tank and fuel loading system |
| CN207511163U (en) * | 2017-11-29 | 2018-06-19 | 华东理工大学华昌聚合物有限公司 | Gas station's sunken tankers double layer innerliner fluid pressure seepage detection system |
| CN207536559U (en) * | 2017-08-31 | 2018-06-26 | 北京中储能能源设备有限公司 | A kind of double-layer thin wall oil tank |
-
2018
- 2018-10-29 CN CN201811267965.1A patent/CN109319320B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06219493A (en) * | 1993-01-19 | 1994-08-09 | Shibazaki:Kk | Unit panel for assembling water tank |
| CN107284887A (en) * | 2017-06-16 | 2017-10-24 | 华东理工大学华昌聚合物有限公司 | A kind of underground oil tank of gasoline station inner lining structure and its construction method |
| CN107600764A (en) * | 2017-08-31 | 2018-01-19 | 北京中储能能源设备有限公司 | The sunken tankers lining structure and its technique of a kind of independent bearing |
| CN207417621U (en) * | 2017-08-31 | 2018-05-29 | 戴熙平 | Double-deck buried tank and fuel loading system |
| CN207536559U (en) * | 2017-08-31 | 2018-06-26 | 北京中储能能源设备有限公司 | A kind of double-layer thin wall oil tank |
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