CN217625388U - Sandwich structure combined material inside lining and oil storage tank - Google Patents

Abstract

The utility model belongs to the technical field of the combined material oil storage tank, concretely relates to sandwich structure combined material inside lining and oil storage tank. The sandwich structure composite material lining comprises a bottom layer, an intermediate layer and a surface layer, wherein the top surface of the bottom layer is attached to the bottom surface of the intermediate layer, the top surface of the intermediate layer is attached to the bottom surface of the surface layer, the bottom layer and the surface layer are formed by compounding glass fibers, the intermediate layer is formed by compounding carbon fiber three-dimensional fabrics, and the bottom layer, the intermediate layer and the surface layer are connected into a whole by adopting a suture line through a three-dimensional sewing technology. The utility model discloses an adopt the three-dimensional technique of sewing up, couple together the bottom that glass fiber complex formed and the intermediate level that surface course, the compound formation of the three-dimensional fabric of carbon fiber to the reinforcing two-dimentional layer combined material spreads the layer performance of direction at the perpendicular to, makes bottom, intermediate level, surface course become multilayer structure coupling integration combined material.

Description

Sandwich structure combined material inside lining and oil storage tank

Technical Field

The utility model belongs to the technical field of the combined material oil storage tank, concretely relates to sandwich structure combined material inside lining and oil storage tank.

Background

At present, the bottom of a vertical oil storage tank in China is mostly of a single-layer metal bottom plate structure, the upper surface of the bottom of the vertical oil storage tank is in direct contact with oil products, the lower surface of the bottom of the vertical oil storage tank is in contact with a tank foundation, the interior of the bottom plate is soaked by oily sewage for a long time, rain water outside the bottom plate is washed away, current flows back and forth, the environment is extremely severe, and the vertical oil storage tank is the place which is most prone to damage in all parts of the oil storage tank and is also the place which is most difficult to repair. The vertical oil storage tank for containing the product oil has the advantage that the bottom plate can generate certain corrosion damage due to the influence of design, environment and working condition of operation and operation management. Especially, the combined action of electrochemical corrosion, chemical corrosion, bacterial corrosion, current corrosion and the like on the inner side and the outer side of the bottom plate easily causes corrosion cracking or pitting perforation of the bottom plate; the damage of the oil storage tank base can also aggravate the corrosion of the bottom plate, and the internal oil storage product leaks, so that economic loss and environmental pollution are caused; once the leaked oil meets a fire source, serious accidents such as fire, explosion and the like can be caused, and serious safety threat can be formed on a production system, the lives of people and the ecological environment.

From the beginning of the 90 s in the 20 th century, the study of a double-layer tank bottom plate structure is started abroad, while the study about the structure is started later in China, and most of China still use steel single-layer tanks at present. The vertical oil storage tank adopts a double-layer tank bottom structure, and consists of an upper layer of metal bottom plate, a lower layer of metal bottom plate and a support piece (filler) in the middle of the metal bottom plate, an annular space is formed between the two layers of tank bottom plates, double-sided corrosion of the single-layer tank bottom plate structure can be avoided, the corrosion rate of the tank bottom plate is reduced, meanwhile, the diffusion of pollutants when oil leaks is prevented, and oil leakage detection can be carried out by adopting a reliable method.

However, in the conventional double-layer tank bottom composite structure, the reinforcing layer and the middle layer are separated from each other, so that a process link is increased in the preparation process, the layers are easy to crack, and the interlayer bonding force is reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sandwich structure combined material inside lining and oil storage tank solve traditional combined material laminated sheet and appear the low, damage tolerance of layer intensity and damage impedance subalternation problem easily in long-term use.

For realizing the purpose of the utility model, the following technical proposal is adopted:

in a first aspect, the utility model provides a sandwich structure combined material inside lining, sandwich structure combined material inside lining includes bottom, intermediate level, surface course, the top surface of bottom and the bottom surface laminating of intermediate level, the top surface of intermediate level and the bottom surface laminating of surface course, the bottom and the surface course form by the glass fiber is compound, the intermediate level is formed by the three-dimensional fabric complex of carbon fiber, adopt the stylolite to connect as an organic wholely through three-dimensional sewing technique between bottom, intermediate level, the surface course.

In a second aspect, the utility model provides an oil storage tank, including the oil tank body and as the first aspect a sandwich structure combined material inside lining, the tank bottoms top of oil tank body is provided with the tie coat, the tie coat top is provided with sandwich structure combined material inside lining.

The further improvement is that a static conductive coating is coated on the surface layer of the sandwich structure composite material lining.

A further improvement is that the sandwich composite liner is impregnated with a resin.

The oil storage tank is further improved in that the oil storage tank further comprises a leakage monitor, and the leakage monitor is in communication connection with the leakage monitoring platform.

The utility model has the advantages that:

the utility model discloses an adopt the three-dimensional technique of sewing up, bottom and surface course that forms the glass fiber complex, the intermediate level that the three-dimensional fabric of carbon fiber complex formed couples together to the reinforcing two-dimentional shop front combined material lays the performance of layer direction at the perpendicular to, makes bottom, intermediate level, surface course become multilayer structure coupling integration combined material, it is low to have solved traditional combined material laminated plate and appear the interlaminar intensity easily in long-term use, damage tolerance and damage impedance subalternation problem, and it is convenient to install, mechanical strength is high.

The utility model discloses a sandwich structure combined material inside lining for vertical oil storage tank can compensate vertical oil storage tank bottoms corrosion defect, restores and the reinforcement to it, even oil tank shell produces the local corrosion, as long as the inside lining can keep integrality, just can not take place the oil and leak, and has to reform transform simply, and it is convenient to install, advantages such as mechanical strength height.

Drawings

Fig. 1 is a schematic structural view of the composite material lining with a sandwich structure of the present invention.

Fig. 2 is another schematic structural view of the composite material lining with a sandwich structure of the present invention.

Fig. 3 is a schematic view of the combination structure of the composite material lining and the oil storage tank with the sandwich structure of the present invention.

Description of the reference numerals:

1. the tank bottom; 2. a bonding layer; 3. a bottom layer; 4. an intermediate layer; 5. a surface layer; 6. and (3) conducting electrostatic coating.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and therefore the drawings show only the constitution related to the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the terms "and", "and" include any and all combinations of one or more of the associated listed items.

Example one

Please refer to fig. 1 and fig. 2, an embodiment of the present invention provides a composite material lining with a sandwich structure, which is mainly used for reconstructing a bottom 1 of a vertical cylindrical oil tank, specifically, the composite material lining with a sandwich structure comprises a bottom layer 3, a middle layer 4 and a surface layer 5, a top surface of the bottom layer 3 and a bottom surface of the middle layer 4 are laminated, the top surface of the middle layer 4 and the bottom surface of the surface layer 5 are laminated, the bottom layer 3 and the surface layer 5 are formed by compounding glass fibers, the middle layer 4 is formed by compounding a carbon fiber three-dimensional fabric, and the bottom layer 3, the middle layer 4 and the surface layer 5 are connected into a whole by a suture line through a three-dimensional sewing technology.

The utility model discloses an adopt sandwich structure, intermediate level 4 that the three-dimensional fabric of carbon fiber is compound to be formed promptly is as middle intermediate layer, bottom 3 and surface course 5 that glass fiber is compound to be formed are as the enhancement layer, found a sandwich structure combined material inside lining, with bottom 3, intermediate level 4, surface course 5 step by step the layer shop layer and finish the back, adopt the stylolite to connect sandwich structure's shop layer material through the mode of three-dimensional sewing technique, form multilayer structure coupling integration combined material (sandwich structure combined material inside lining promptly), the three-dimensional sewing technique belongs to prior art in addition, the embodiment only changes it to the use the utility model discloses in, do not improve the technique, consequently do not carry out detailed description to its technique.

The concrete manufacturing process of the sandwich structure composite material lining comprises the following steps: firstly, paving and aging a layer of glass fiber as a bottom layer 3 according to a set size, cutting the carbon fiber three-dimensional fabric, orderly paving and overlapping the cut carbon fiber three-dimensional fabric on the bottom layer 3 as an intermediate layer 4 according to a set paving mode, paving and aging a layer of glass fiber as a surface layer 5 according to a set size, regularly paving and overlapping the three layers, and finally sewing the multilayer structure along the thickness direction by using a sewing thread.

In the embodiment, the bottom layer 3 formed by compounding the glass fibers, the surface layer 5 and the intermediate layer 4 formed by compounding the carbon fiber three-dimensional stereo fabric are connected by adopting a three-dimensional sewing technology, so that the performance of the two-dimensional paving layer composite material in the direction perpendicular to the paving layer direction is enhanced, and the bottom layer 3, the intermediate layer 4 and the surface layer 5 become a multi-layer structure coupling integrated composite material.

The utility model discloses a this kind of integral structure has at first guaranteed that bottom 3, intermediate level 4, surface course 5 are connected to be a whole, as shown in fig. 2, use resin infiltration stylolite after, the stylolite will become a little stand of support to the concora crush performance of vertical direction can further be strengthened.

In addition, the carbon fiber material has the characteristics of high strength, high modulus, impact resistance, fatigue resistance, small density, light weight and corrosion resistance, and is more applied to the fields of aerospace, construction and industry. Meanwhile, the carbon fiber has good conductivity, and can form electrochemical corrosion points in the crude oil leakage concave part to form anode protection.

Example two

Referring to fig. 1-3, a second embodiment of the present invention provides an oil storage tank, the oil storage tank includes an oil tank body and a sandwich structure composite material lining as in the first embodiment, a bonding layer 2 is disposed above a tank bottom 1 of the oil tank body, and the sandwich structure composite material lining is disposed above the bonding layer 2.

Wherein, the size of dimension of sandwich structure combined material inside lining with the oil tank body looks adaptation.

Preferably, the static conductive coating 6 is coated on the surface layer 5 of the sandwich structure composite material lining. Static electricity can be better eliminated by painting the static conductive coating 6.

The sandwich structure composite material lining is soaked by resin.

In some embodiments of the present invention, the oil storage tank further comprises a leakage monitor (not shown in the figure), and the leakage monitor is in communication connection with the leakage monitoring platform. When the leakage monitor detects the occurrence of the leakage condition, early warning can be timely sent out and reported to the leakage monitoring platform.

Specifically, the installation process between sandwich structure combined material inside lining and the oil tank body is as follows:

firstly, cleaning an oil storage tank, after the forced ventilation is qualified, carrying out sand blasting or manual tool rust removal treatment on an oil tank bottom plate and a wall plate, and completely cleaning the surface layer after the rust removal is finished.

And then, uniformly coating the adhesive on the bottom plate and the wall plate of the oil tank after rust removal to form an adhesive layer 2, so that the defects of missing coating, sagging and the like cannot exist, and detecting the thickness, the hardness, the defects, the adhesive force and the curing degree of the coating after curing.

And then, coating the prepared resin on the bonding layer 2, then paving the sandwich structure composite material liner, soaking the sandwich structure composite material liner with the resin, rolling, and expelling air bubbles to fully combine the resin and the sandwich structure composite material liner.

And then brushing an electrostatic conductive coating 6 on the surface layer 5, wherein the electrostatic conductive coating 6 is effectively connected with the electrostatic conductive coating on the inner wall of the oil tank.

Because the sandwich structure composite material lining used in the embodiment is prepared in advance, the sandwich structure composite material lining can be directly adhered to the oil storage tank in the installation process, and the installation is very convenient.

The utility model discloses a sandwich structure combined material inside lining for vertical oil storage tank can compensate vertical oil storage tank bottoms 1 corrosion defect, restores and the reinforcement to it, even oil tank shell produces the local corrosion, as long as the inside lining can keep integrality, just can not take place the oil and leak, and has to reform transform simply, and it is convenient to install, advantages such as mechanical strength height.

All possible combinations of the technical features in the above embodiments may not be described for the sake of brevity, but should be considered as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express the specific implementation manner of the present invention, and the description thereof is specific and detailed, but not to be understood as the limitation of the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims (5)

1. The utility model provides a sandwich structure combined material inside lining, its characterized in that, sandwich structure combined material inside lining includes bottom, intermediate level, surface course, the top surface of bottom and the laminating of the bottom surface of intermediate level, the top surface of intermediate level and the laminating of the bottom surface of surface course, bottom and surface course are formed by glass fiber complex, the intermediate level is formed by the three-dimensional fabric complex of carbon fiber, adopt the stylolite to connect as an organic wholely through three-dimensional sewing technique between bottom, intermediate level, the surface course.

2. An oil storage tank, characterized in that, the oil storage tank includes the oil tank body and claim 1 a sandwich structure combined material inside lining, be provided with the tie coat above the tank bottoms of oil tank body, be provided with above the tie coat sandwich structure combined material inside lining.

3. The oil storage tank of claim 2, wherein a static conductive coating is applied over the facing of the sandwich composite liner.

4. The storage tank of claim 2, wherein said sandwich composite liner is impregnated with resin.

5. The oil storage tank of claim 2, further comprising a leak monitor in communication with the leak monitoring platform.

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