CN-116674889-B - Tank bottom foundation anti-corrosion packaging structure and construction method

CN116674889BCN 116674889 BCN116674889 BCN 116674889BCN-116674889-B

Abstract

The application discloses a tank bottom foundation anti-corrosion packaging structure and a construction method, wherein a plurality of protection modules are arranged at the outer edges of a tank wall and a concrete bearing platform and spliced end to form an external tank protection structure, and the joint positions of adjacent protection modules, the tank wall and the protection modules, and the concrete bearing platform are respectively sealed by a first sealing unit, a second sealing unit and a third sealing unit, so that the external tank protection structure and the bottom of a tank body form a sealed space, the sealed space forms a vacuum environment, the edge plate of the bottom of the tank body positioned in the sealed space is completely isolated from the outside, and the channels of corrosive mediums such as rainwater, dew and the like invading the edge plate are cut off, thereby achieving the purpose of protecting the bottom plate of an oil tank.

Inventors

GENG PENG
ZHANG CHENGHE
SHI WEILONG
Sang Zhongzhen
LI CHUNDONG

Assignees

山东京博装备制造安装有限公司

Dates

Publication Date: 20260508
Application Date: 20230605

Claims (4)

1. An anticorrosion packaging structure for a tank bottom foundation, which is characterized by comprising: The tank bottom foundation structure comprises a concrete bearing platform, and a tank body is arranged on the concrete bearing platform; The tank outer protection structure is formed by sequentially connecting a plurality of protection modules around the tank wall and the outer edge of the concrete bearing platform end to end, a first blocking unit is arranged at the joint between the adjacent protection modules, a second blocking unit is arranged at the joint between the protection modules and the tank wall, a third blocking unit is arranged at the joint between the protection modules and the concrete bearing platform, and an edge plate at the bottom of the tank body is sealed in a sealed space formed by the tank outer protection structure and the tank body, so that the sealed space forms vacuum to realize corrosion prevention of the tank bottom; During maintenance, inert gas is blown into the closed space by using blowing equipment, gas leakage points are checked, and the leakage condition of the tank body is obtained by detecting the components of the exhaust gas, so that the safety storage performance of the oil tank is improved; the protection module is a protection plate, the protection plate comprises a vertical section and an inclined section, one end of the vertical section in the length direction is provided with a plugging groove, the other end of the vertical section is provided with a plugging protrusion, and the plugging protrusion is vertically plugged into the plugging groove to enable adjacent protection plates to be in matched connection; The splicing bulge is provided with a hollow part, the inclined section is provided with a communication groove, and adjacent communication grooves form a communication channel which is communicated with the hollow part; the first plugging unit comprises silicone adhesive, and the silicone adhesive is injected into the hollow part through an adhesive gun until the hollow part is full of the communication channel and gaps between the plugging grooves and the plugging protrusions, so that seams between adjacent protection plates are plugged; the second plugging unit comprises a CTPU which is poured at a joint connection position of the tank wall and the protection module so as to form a slope downwards from the tank wall; the third plugging unit comprises polyurethane foam rubber, the protection module is provided with a coaming, after the protection module is connected end to end, the coaming is abutted to the outer side of the concrete bearing platform to form a plugging area, and the polyurethane foam rubber fills the plugging area to seal the joint position of the protection module and the concrete bearing platform.
2. The tank bottom foundation anticorrosion packaging structure of claim 1, wherein the hollow part is provided with a communication hole for communicating a gap between the plugging groove and the plugging protrusion, and the first plugging unit enters the communication channel and the communication hole through the hollow part.
3. The tank bottom foundation anti-corrosion packaging structure according to claim 1, wherein the closed space is provided with an air extraction opening, and a vacuum pump vacuumizes the closed space through the air extraction opening.
4. A method of using the tank bottom foundation anti-corrosion packaging structure as claimed in any one of claims 1 to 3, comprising the steps of: s1, cleaning sundries on the surface of a concrete bearing platform, repairing the concrete bearing platform by using concrete, trowelling, and corner arc transition, and spraying a concrete curing agent after the concrete is cured; s2, sequentially surrounding the tank wall and the outer edge of the concrete bearing platform around the protective modules end to form an annular tank outer protective structure; s3, injecting silicone adhesive into the hollow part of the protection module through an adhesive gun to enable the silicone adhesive to be filled in the communication channel, the gap between the inserting groove and the inserting protrusion and the hollow part, and waiting for the silicone adhesive to be completely solidified; S4, a protective module in the plugging area is partially provided with an injection port, polyurethane foam adhesive is injected into the hole, CTPU waterproof and anti-corrosion primer is cast and coated at the joint of the tank wall and the protective plate to form a slope downward from the tank wall, the slope angle is ensured to be more than 10 degrees, the joint is ensured to be filled, leveled and compacted, after the CTPU waterproof and anti-corrosion primer is not sticky to hands, CTPU waterproof paint cement is coated, then two layers of reinforced glass cloth are paved, after the surface is dry, the operations of coating the CTPU waterproof paint cement and paving the glass cloth are repeated for one time, and finally elastic finish paint is coated; And S5, connecting the air suction opening by using a vacuum pump, sucking air in the closed space to form vacuum, and then closing the air suction opening to realize corrosion prevention of the tank bottom.

Description

Tank bottom foundation anti-corrosion packaging structure and construction method Technical Field The application belongs to the field of storage tank corrosion prevention, and particularly relates to a tank bottom foundation corrosion prevention container structure and a construction method. Background The edge plate of the large-scale storage tank bottom plate occupies a large proportion in the oil tank corrosion accident, so the protection of the oil tank bottom plate edge plate is enhanced, the accident rate of the oil tank is very important to the improvement of the service life of the oil tank and the reduction of the oil tank, at present, the domestic common storage tank edge plate corrosion prevention method is to coat CTPU (computer-to-plate) elastic polyurethane, and the method has the characteristics of good waterproof effect, good adhesiveness and good physical property, is easy to maintain and long in service life, adopts a construction process of adding a certain amount of filler into the waterproof paint CTPU to prepare daub or clay, and strengthens the coating strength by pasting glass cloth to cut off the channel of the corrosion medium invasion edge plate such as rainwater, dew and the like, thereby achieving the purpose of protecting the storage tank bottom plate. The method comprises the steps of manually removing paint films, rust, cement and other impurities loosened at the outer side of the bottom of the tank wall of an oil tank base, removing old glue, iron, rust, cement impurities and the like corroded and loosened on the base surface of an edge plate (steel plate), and the like, wherein the operation is complicated, the existing domestic old oil tank is subjected to waterproof treatment such as asphalt pouring seams (between the edge plate and the base), the base layer of the oil tank is more difficult to treat, the time is longer, the cost of manual cleaning is high, the oil stains, dust and other impurities on the old asphalt can influence the tight combination of the CTPU and the edge plate if the old asphalt is not cleaned cleanly, and the problem that a special-shaped structure such as convex angle, bolts and the like exists at some positions of the tank bottom, so that a continuous complete anti-corrosion layer cannot be formed, the waterproof effect is influenced, on the other hand, the waterproof coating needs to be uniformly coated, if the waterproof layer is not enough in thin intensity, is easily damaged, a certain amount of displacement is not born, the situation of easy local leakage is not guaranteed after a period of time, the waterproof coating is uneven, and after drying, the waterproof coating is not even, delamination and even places can be damaged, and even water is leaked, and the CTP coating can be damaged, and the cost is further high when the existing technology is required to be further improved. Disclosure of Invention The present invention provides a tank bottom foundation corrosion resistant packaging structure that at least solves or alleviates one or more of the technical problems of the prior art, or at least provides a beneficial choice. In order to achieve the above purpose, the present invention provides the following technical solutions: an anticorrosion packaging structure for a tank bottom foundation, comprising: The tank bottom foundation structure comprises a concrete bearing platform, and a tank body is arranged on the concrete bearing platform; The outer protective structure of jar, the outer protective structure of jar by a plurality of protection module around jar wall with the outward flange head and the tail of concrete cap is connected in order and is constituted, and the seam crossing between the adjacent protection module sets up first shutoff unit, the protection module with the seam crossing of jar wall sets up the second shutoff unit, the protection module with the seam crossing position of concrete cap sets up the third shutoff unit, the marginal board of jar body bottom seals in the enclosure space of jar outer protective structure and jar body formation, makes enclosure space form vacuum to realize that the tank bottoms is anticorrosive. According to the tank bottom foundation anti-corrosion packaging structure, the outer edges of the tank wall and the concrete bearing platform are provided with the plurality of protection modules which are spliced end to form the tank outer protection structure, and the joint positions of the adjacent protection modules, the protection modules and the tank wall as well as the protection modules and the concrete bearing platform are respectively sealed through the first sealing unit, the second sealing unit and the third sealing unit, so that a sealed space is formed between the tank outer protection structure and the bottom of the tank body, the sealed space is formed into a vacuum environment, the edge plate of the bottom of the tank body positioned in the sealed space is completely isolated f