阅读说明：本技术 一种模块化储罐罐壁及其安装方法 (Modular storage tank wall and installation method thereof ) 是由 肖立 张超 刘洋 张博超 张彧 黄欢 姜夏雪 扬帆 于 2020-08-10 设计创作，主要内容包括：本发明涉及一种模块化储罐罐壁及其安装方法,该罐壁包括呈圆弧块状的储罐罐壁模块,其内外侧壁的四个边角处分别设置有水平连接楔形口,在每一水平连接楔形口与相邻的储罐罐壁模块左右侧壁之间设置有贯通的水平连接半孔；在位于同水平面的两水平连接楔形口之间的储罐罐壁模块内外侧壁上设置有至少一个竖向连接楔形口,在每一竖向连接楔形口与相邻的储罐罐壁模块上下侧壁之间设置有贯通的竖向连接半孔。本发明打破了现有的混凝土罐壁现浇施工技术,通过罐壁预制、分块分层模块化拼装,完成罐壁制作及施工,可以大大缩短全容储罐罐壁施工周期,同时使用预制的罐壁模块,还可以提高预应力钢筋混凝土材料质量,提高罐壁施工的安全性。(The invention relates to a modularized storage tank wall and an installation method thereof, wherein the tank wall comprises storage tank wall modules in the shape of circular arc blocks, four corners of the inner side wall and the outer side wall of each storage tank wall module are respectively provided with a horizontal connecting wedge-shaped opening, and a through horizontal connecting half hole is arranged between each horizontal connecting wedge-shaped opening and the left side wall and the right side wall of the adjacent storage tank wall module; at least one vertical connecting wedge-shaped opening is arranged on the inner side wall and the outer side wall of the storage tank wall module between the two horizontal connecting wedge-shaped openings on the same horizontal plane, and a through vertical connecting half hole is arranged between each vertical connecting wedge-shaped opening and the upper side wall and the lower side wall of the adjacent storage tank wall module. The invention breaks the existing concrete tank wall cast-in-place construction technology, completes the tank wall manufacture and construction by tank wall prefabrication and block-by-block modular assembly, can greatly shorten the tank wall construction period of the full-capacity storage tank, and can improve the quality of prestressed reinforced concrete materials and the construction safety of the tank wall by using the prefabricated tank wall modules.)

1. The modularized storage tank wall is characterized by comprising storage tank wall modules (1), wherein each storage tank wall module (1) is in an arc block shape, horizontal connecting wedge-shaped openings (2) are respectively arranged at four corners of the inner side wall and the outer side wall of each storage tank wall module (1), a through horizontal connecting half hole (4) is arranged between each horizontal connecting wedge-shaped opening (2) and the left side wall and the right side wall of the adjacent storage tank wall module (1), and the horizontal connecting half holes (4) of the two horizontally adjacent storage tank wall modules (1) jointly form a complete arc horizontal connecting through hole (9);

the two horizontal connecting wedge-shaped openings (2) are arranged on the same horizontal plane, at least one vertical connecting wedge-shaped opening (3) is arranged on the inner side wall and the outer side wall of the storage tank wall module (1), each vertical connecting wedge-shaped opening (3) is adjacent to the vertical connecting wedge-shaped opening, a through vertical connecting half hole (5) is arranged between the upper side wall and the lower side wall of the storage tank wall module (1), and the vertical connecting half holes (5) of the storage tank wall module (1) are vertically adjacent to each other to form a complete arc-shaped vertical connecting through hole.

2. The modular tank wall according to claim 1, characterized in that more than two parallel horizontal pre-stressed ducts (6) for the penetration of pre-stressed steel strands are provided in the tank wall module (1), and more than two parallel vertical pre-stressed ducts (7) for the penetration of pre-stressed steel strands are provided in the tank wall module (1), and the vertical pre-stressed ducts (7) are located inside the horizontal pre-stressed ducts (6) and do not intersect with each other.

3. The modular tank wall according to claim 2, characterized in that the diameter of the horizontally and vertically prestressed channels (6, 7) is 10-300 mm.

4. The modular tank wall according to claim 1, characterized in that sealing strips (8) are provided circumferentially at the inner and outer side edges of the tank wall modules (1).

5. Modular tank wall according to any of the claims 1 to 4, characterized in that the tank wall modules (1) are pre-stressed reinforced concrete structures with strength class C30-C90, impermeability class P6 or above.

6. The modular tank wall according to any one of claims 1 to 4, characterized in that the tank wall modules (1) are either upper side wall slotted, lower side wall bulged or upper side wall bulged, lower side wall slotted;

meanwhile, the left side wall of the storage tank wall module (1) is grooved, the right side wall of the storage tank wall module is protruded, or the left side wall of the storage tank wall module is protruded, and the right side wall of the storage tank wall module is grooved.

7. Modular tank wall according to any of the claims 1 to 4, characterized in that the tank wall modules (1) are prefabricated in the factory or on site.

8. A method of installing a modular tank wall according to any one of claims 1 to 7, comprising the steps of:

s1: prefabricating the storage tank wall module (1), completing maintenance, reaching the strength and then conveying to a construction site;

s2: hoisting each storage tank wall module (1) of the first layer in place and forming a circle;

s3: a horizontal bolt with threads at two ends extends into a horizontal connecting through hole (9) of two horizontally adjacent storage tank wall modules (1) through a horizontal connecting wedge-shaped opening (2), and two thread ends of the horizontal bolt are respectively positioned in the horizontal connecting wedge-shaped openings (2) of the two storage tank wall modules (1);

s4: fastening two ends of the horizontal bolt by using nuts, pressing the sealing strip (8) tightly, and installing the first layer of storage tank wall in place;

s5: hoisting each tank wall module (1) of the second layer in position on the first layer of tank wall and forming a circle, and repeating the steps S3 and S4;

s6: a vertical bolt with threads at two ends extends into vertical connecting through holes of two vertically adjacent storage tank wall modules (1) through a vertical connecting wedge-shaped opening (3), and two thread ends of the vertical bolt are respectively positioned in the vertical connecting wedge-shaped openings (3) of the two storage tank wall modules (1);

s8: fastening two ends of the vertical bolt by using a nut, pressing the sealing strip (8), and installing the wall of the second layer of storage tank in place;

s9: repeating the steps S5 to S8 until the nth layer of storage tank wall is mounted in place;

s10: penetrating the prestressed steel strand into a horizontal prestressed duct (6) and a vertical prestressed duct (7), and performing horizontal and vertical prestressed penetration and tensioning;

s11: fastening each horizontal bolt and each vertical bolt again;

s12: all the horizontal connecting wedge-shaped openings (2) and the vertical connecting wedge-shaped openings (3) are closed.

9. LNG full-capacity storage tank, characterized by being built from modular tank walls according to any of claims 1 to 7 by the installation method according to claim 8.

10. The LNG full-capacity storage tank of claim 9, in the form of a high-pedestal overhead storage tank, a land-based storage tank, a semi-underground storage tank, a full-underground storage tank, a membrane storage tank, or a full concrete storage tank.

Technical Field

The invention relates to a LNG (liquefied natural gas) storage tank wall, in particular to a storage tank wall adopting a modular design and an installation method thereof, and belongs to the technical field of liquefied natural gas transmission and distribution.

Background

LNG is a liquid hydrocarbon mixture based on methane, obtained by cooling natural gas at atmospheric pressure to-162 ℃, having a molar composition of about C1: 80% -90%, C2: 3% -10%, C3: 0% -5%, C4: 0-3 percent of the total weight of the composition and trace C5 +. LNG is colorless, tasteless, nontoxic and noncorrosive, and can be directly evaporated after leakage. LNG is advantageous for transportation and storage because it has a volume of about 1/600 times its gas (20 ℃,101.325KPa) volume, and as LNG carrier and storage tank manufacturing technology advances, LNG is almost currently the primary method of transporting natural gas across the ocean.

The investment of the LNG storage tank is higher in both a natural gas liquefaction plant and an LNG receiving terminal, especially in the LNG receiving terminal, the investment of the storage tank accounts for about 30-40% of the total investment, and the LNG storage tank is a very important component in the whole LNG industry chain.

At present, 21 built and put-in-production LNG receiving stations exist in China, the total number of the LNG storage tanks is more than 50, the maximum tank capacity is 20 ten thousand, and China completely has the technical capabilities of independent design, production, construction and operation of the LNG storage tanks. Moreover, there are more than 20 LNG receiving stations under construction and planned construction, and domestic LNG receiving terminals enter a rapid construction period.

Due to the influence of winter and out of date in the north, the influence of weather such as typhoons, rainy seasons and the like which are common in the south coastal region and the difference of construction technology capability, the conventional period of the construction of the large-scale concrete full-capacity LNG storage tank is generally between 30 months and 36 months. Under the influence of policies such as national production, supply and marketing, interconnection and intercommunication, winter protection and the like, LNG receiving station construction units are relatively sensitive to project construction periods, and accordingly project general contract units, design units and construction units continuously adjust and optimize the construction periods. However, under the existing technical level and construction capacity conditions, the space for continuously compressing the construction period is not large.

The large-scale concrete holds LNG storage tank wall entirely and is cast-in-place structure, and the layering construction, basic flow is: the construction period of each layer is about 10 days, and the construction period of the whole tank wall is generally about 120 days according to the layering number of the large LNG storage tank. In addition, due to the fact that long-time overhead operation is involved, safety of constructors is a great hidden danger, and a serious accident that a plurality of people die due to the fact that a steel bar net piece on a tank wall collapses integrally in a certain LNG storage tank project in China occurs.

Disclosure of Invention

In view of the above problems, an object of the present invention is to provide a modular tank wall of a storage tank, so as to solve the problems of long construction period, difficult construction quality guarantee and low construction safety of the conventional tank wall in situ casting; it is another object of the present invention to provide a method of installing the modular tank wall.

In order to achieve the purpose, the invention adopts the following technical scheme: a modular storage tank wall comprises storage tank wall modules, wherein each storage tank wall module is in an arc block shape, horizontal connecting wedge-shaped openings are respectively formed in four corners of the inner side wall and the outer side wall of each storage tank wall module, a through horizontal connecting half hole is formed between each horizontal connecting wedge-shaped opening and the left side wall and the right side wall of each adjacent storage tank wall module, and the horizontal connecting half holes of the two horizontally adjacent storage tank wall modules form a complete arc horizontal connecting through hole together; the storage tank wall module is characterized in that at least one vertical connecting wedge-shaped opening is arranged on the inner side wall and the outer side wall of the storage tank wall module between two horizontal connecting wedge-shaped openings which are located on the same horizontal plane, a through vertical connecting half hole is formed between each vertical connecting wedge-shaped opening and the adjacent upper side wall and the lower side wall of the storage tank wall module, and the vertical connecting half holes of the two vertically adjacent storage tank wall modules form a complete arc-shaped vertical connecting through hole together.

The modularized storage tank wall is characterized in that preferably, more than two horizontal prestressed ducts which are used for penetrating prestressed steel strands and are parallel to each other are arranged in the storage tank wall module, and more than two vertical prestressed ducts which are used for penetrating prestressed steel strands and are parallel to each other are also arranged in the storage tank wall module, and the vertical prestressed ducts are located on the inner sides of the horizontal prestressed ducts and are not intersected with each other.

The modular storage tank wall is preferably characterized in that the diameters of the horizontal prestressed duct and the vertical prestressed duct are 10-300 mm.

The modular tank wall is preferably provided with sealing strips along the circumferential direction at the inner and outer side edges of the tank wall modules.

The modular tank wall, preferably, the tank wall module is a prestressed reinforced concrete structure with the strength grade of C30-C90 and the impermeability grade of P6 or above.

The modular tank wall is preferably provided with an upper side wall slot, a lower side wall protrusion or an upper side wall protrusion and a lower side wall slot; and meanwhile, the left side wall of the storage tank wall module is grooved, the right side wall of the storage tank wall module is protruded or the left side wall of the storage tank wall module is protruded, and the right side wall of the storage tank wall module is grooved.

The modular tank wall, preferably, the tank wall modules are prefabricated in a factory or on site.

A method for installing the wall of the modular storage tank comprises the following steps:

s1: prefabricating a storage tank wall module, completing maintenance, achieving strength and then conveying to a construction site;

s2: hoisting each storage tank wall module of the first layer in place and forming a circle;

s3: a horizontal bolt with threads at two ends extends into the horizontal connecting through hole of the two horizontally adjacent storage tank wall modules through the horizontal connecting wedge-shaped opening, and the two thread ends of the horizontal bolt are respectively positioned in the horizontal connecting wedge-shaped openings of the two storage tank wall modules;

s4: fastening two ends of the horizontal bolt by using nuts, pressing the sealing strip tightly, and installing the first layer of storage tank wall in place;

s5: hoisting each tank wall module of the second layer into position on the first layer of tank wall and forming a circle, and repeating the steps S3 and S4;

s6: a vertical bolt with threads at two ends extends into vertical connecting through holes of two vertically adjacent storage tank wall modules through a vertical connecting wedge-shaped opening, and two thread ends of the vertical bolt are respectively positioned in the vertical connecting wedge-shaped openings of the two storage tank wall modules;

s8: fastening two ends of the vertical bolt by using a nut, pressing the sealing strip tightly, and installing the wall of the second layer of storage tank in place;

s9: repeating the steps S5 to S8 until the nth layer of storage tank wall is mounted in place;

s10: penetrating the prestressed steel strand into a horizontal prestressed duct and a vertical prestressed duct, and performing horizontal and vertical prestressed penetration and tensioning;

s11: fastening each horizontal bolt and each vertical bolt again;

s12: closing all horizontal and vertical connecting wedges.

An LNG full-capacity storage tank is built by the modular storage tank wall through the installation method.

The LNG full-capacity storage tank is preferably in the form of a high-bearing-platform overhead storage tank, a sitting-ground storage tank, a semi-underground storage tank, a full-underground storage tank, a thin-film storage tank or a full-concrete storage tank.

Due to the adoption of the technical scheme, the invention has the following advantages: 1. the invention breaks the existing concrete tank wall cast-in-place construction technology, completes the tank wall manufacturing and construction by prefabricating the tank wall and assembling the tank wall in a layered and modularized way in blocks, can greatly shorten the construction period of the tank wall of the full-capacity storage tank, and saves the construction period by more than 60 days. 2. The invention uses the prefabricated tank wall module, can improve the quality of prestressed reinforced concrete materials, realizes fine maintenance and improves the quality of the tank wall. 3. The modular storage tank wall manufacturing and construction method can shorten the overhead working time of constructors, thereby improving the safety of tank wall construction.

Drawings

FIG. 1 is a schematic view of the overall construction of a modular tank wall of the present invention;

fig. 2 is a schematic view of the horizontal and vertical relative positions of the tank wall module of the present invention.

FIG. 3 is a view of the corner arrangement of the tank wall module of the storage tank of the present invention;

FIG. 4 is a horizontal layout of the tank wall module of the present invention;

fig. 5 is a vertical layout of the tank wall module of the storage tank of the present invention.

The reference numerals in the figures are as follows:

1 is a storage tank wall module; 2 is a horizontal connecting wedge-shaped opening; 3 is a vertical connecting wedge-shaped opening; 4 is a horizontal connecting half hole; 5 is a vertical connecting half hole; 6 is a horizontal prestressed duct; 7 is a vertical prestressed duct; 8 is a sealing strip; and 9 is a horizontal connecting through hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. Also in the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "inner", "outer", "horizontal", "vertical", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplification of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be taken as limiting the scope of the present invention.

As shown in fig. 1 to 5, the modular storage tank wall provided by the invention comprises storage tank wall modules 1, wherein each storage tank wall module 1 is in an arc block shape, horizontal connecting wedge-shaped openings 2 are respectively arranged at four corners of the inner side wall and the outer side wall of each storage tank wall module 1, a through horizontal connecting half hole 4 is arranged between each horizontal connecting wedge-shaped opening 2 and the left side wall and the right side wall of the adjacent storage tank wall module 1, and the horizontal connecting half holes 4 of the two horizontally adjacent storage tank wall modules 1 jointly form a complete arc horizontal connecting through hole 9. At least one vertical connecting wedge-shaped opening 3 is arranged on the inner side wall and the outer side wall of the storage tank wall module 1 between the two horizontal connecting wedge-shaped openings 2 which are positioned on the same horizontal plane, a through vertical connecting half hole 5 is arranged between each vertical connecting wedge-shaped opening 3 and the upper side wall and the lower side wall of the adjacent storage tank wall module 1, and the vertical connecting half holes 5 of the two vertically adjacent storage tank wall modules 1 jointly form a complete arc-shaped vertical connecting through hole (not shown in the figure).

In the above embodiment, preferably, more than two horizontal pre-stressed ducts 6 which are parallel to each other and used for penetrating the pre-stressed steel strand are arranged in the storage tank wall module 1, and at least two vertical pre-stressed ducts 7 which are parallel to each other and used for penetrating the pre-stressed steel strand are also arranged in the storage tank wall module 1, and the vertical pre-stressed ducts 7 are located inside the horizontal pre-stressed ducts 6 and do not intersect with each other.

In the above embodiment, it is preferable that the horizontally and vertically prestressed ducts 6 and 7 have a diameter of 10mm to 300 mm.

In the above embodiment, it is preferable that the sealing strips 8 are provided circumferentially at the inner and outer side edges of the tank wall module 1.

In the above embodiment, preferably, the tank wall module 1 is a prestressed reinforced concrete structure having a strength grade of C30-C90 and an anti-permeability grade of P6 or above.

In the above embodiment, preferably, the tank wall module 1 has its upper side wall slotted, lower side wall bulged or upper side wall bulged, lower side wall slotted; meanwhile, the left side wall of the storage tank wall module 1 is grooved, the right side wall of the storage tank wall module is protruded, or the left side wall of the storage tank wall module is protruded, and the right side wall of the storage tank wall module is grooved.

Based on the modular storage tank wall provided by the embodiment, the invention further provides an installation method of the modular storage tank wall, which comprises the following steps:

s1: prefabricating the storage tank wall module 1 in a factory or on site, completing maintenance, and conveying to a construction site after reaching the strength;

s2: hoisting each storage tank wall module 1 of the first layer in place by using hoisting equipment such as a crane and the like to form a circle;

s3: a horizontal high-strength bolt with threads at two ends extends into the horizontal connecting through holes of the two horizontally adjacent storage tank wall modules 1 through the horizontal connecting wedge-shaped openings 2, and the two thread ends of the horizontal high-strength bolt are respectively positioned in the horizontal connecting wedge-shaped openings 2 of the two storage tank wall modules 1;

s4: fastening two ends of the horizontal high-strength bolt by using nuts, pressing the sealing strip 8 tightly, and installing the first layer of storage tank wall in place;

s5: hoisting each tank wall module 1 of the second layer in place on the tank wall of the first layer and forming a circle, and repeating the steps S3 and S4;

s6: a vertical high-strength bolt with threads at two ends extends into vertical connecting through holes of two vertically adjacent storage tank wall modules 1 through a vertical connecting wedge-shaped opening 3, and the two thread ends of the vertical high-strength bolt are respectively positioned in the vertical connecting wedge-shaped openings 3 of the two storage tank wall modules 1;

s8: fastening two ends of the vertical high-strength bolt by using nuts, pressing the sealing strip 8 tightly, and installing the wall of the second-layer storage tank in place;

s9: repeating the steps S5 to S8 until the nth layer of storage tank wall is mounted in place;

s10: penetrating prestressed steel strands into a horizontal prestressed duct 6 and a vertical prestressed duct 7, and performing horizontal and vertical prestressed penetration and tensioning;

s11: fastening each horizontal high-strength bolt and each vertical high-strength bolt again;

s12: closing all horizontal connecting wedges 2 and vertical connecting wedges 3.

Based on the installation method of the modular storage tank wall provided by the embodiment, the invention further provides the LNG full-capacity storage tank which is built by the installation method.

In the above embodiments, the full-capacity storage tank is preferably in the form of a high-pedestal overhead storage tank, a land-based storage tank, a semi-underground storage tank, a full-underground storage tank, a membrane storage tank, or a full concrete storage tank.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.