Low-temperature LNG (Liquefied Natural Gas) storage tank area fire dike

Abstract

The utility model discloses a low-temperature LNG storage tank area fire dike which comprises anchor rods, anchor rod anchorage devices and a wall body, and the wall body is composed of a structural bottom plate and a structural baffle. A waist beam is designed and formed in the middle section of the structural baffle; holes are formed in the structural bottom plate, the structural baffle and the waist beam in the same axis direction so that anchor rods can be installed in a penetrating and inserting mode. The front end of the anchor rod is fixedly installed on the waist beam through an anchor rod anchorage device provided with a base plate, the middle section of the anchor rod is reinforced and arranged in a hole of a structural bottom plate through a welding profile steel pressure bearing body, and the tail section of the anchor rod is inserted into the ground below the structural bottom plate in the axis direction of the hole. According to the utility model, the overall strength of the fire dike is improved by arranging the anchor rods capable of realizing oblique tension at the position of the structural bottom plate on the inner side of the fire dike along the longitudinal direction by two to three meters; the structure can provide anti-overturning moment and anti-sliding force when overturning along the edge of the outer side structure bottom plate, and the bending moment of the bottom of the fire dike wall and the bending moment of the inner side structure bottom plate of the fire dike are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil depot construction, and particularly relates to a fire dike for a low-temperature LNG storage tank area. Background Art

[0002] In the petrochemical industry, the fire dike is set as a foundation. When a leakage accident occurs in a storage tank that turns gaseous into liquid LNG through low temperature, the fire dike can prevent the outflow of liquid and the spread of fire. Usually, soil is filled outside the reinforced concrete fire dike to balance the lateral pressure of the leaked liquid inside the fire dike. Sometimes, the height of the fire dike is relatively high, and the soil filled outside the fire dike cannot be too high due to site vertical reasons, or the conventional size of the fire dike is difficult to meet the requirements under accident and earthquake conditions. Therefore, it is necessary to provide a fire dike structure for this situation to ensure the ability of anti-overturning, anti-sliding and bending resistance at the bottom of the retaining wall under the condition of height limit. Content of the Utility Model

[0003] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide a fire dike for a low-temperature LNG storage tank area.

[0004] To solve the above problems, the utility model adopts the following technical solutions:

[0005] A fire dike for a low-temperature LNG storage tank area includes anchor rods, anchor rod anchors and a wall body. The wall body is composed of a structural bottom plate and a structural baffle; a waist beam is designed and formed in the middle section of the structural baffle; holes are opened on the structural bottom plate, the structural baffle and the waist beam along the same axial direction for the anchor rods to be inserted and installed; the front end of the anchor rod is fixedly installed on the waist beam through an anchor rod anchor equipped with a backing plate, and the middle section is reinforced and arranged in the hole of the structural bottom plate through a welded steel pressure-bearing body, and the end section is inserted into the ground below the structural bottom plate along the axial direction of the hole.

[0006] Preferably, the wall body is designed and formed with a cross-section in a "⊥" shape structure.

[0007] Preferably, an outer protective sleeve is sleeved on the anchor rod.

[0008] Preferably, the structural bottom plate should be buried under the ground outside the protective dike and cofferdam.

[0009] Preferably, the axis of the hole for the anchor rod to be inserted and installed extends out based on the waist beam, and this axis extends towards the protective dike side to determine the position where the hole needs to be opened. At the same time, its extension direction should pass through the ground of the protective dike and one side of the structural bottom plate in sequence.

[0010] Preferably, the angle range between the hole formed on the structural baffle and the structural baffle based on the plane should be between 13° and 17°.

[0011] Advantages of the utility model:

[0012] Compared with the prior art, the advantages of the utility model are as follows:

[0013] The utility model improves the overall strength of the fire dike by arranging anti-tensile anchor rods that can achieve diagonal tension along the longitudinal direction for two to three meters at the structural bottom plate inside the fire dike. Such a structure can provide an anti-overturning moment, an anti-sliding force, reduce the bending moment at the bottom of the fire dike wall, and reduce the bending moment of the structural bottom plate inside the fire dike when overturning along the outer structural bottom plate edge. The tension of the anchor rod is transmitted and dispersed to the whole wall through a concrete waist beam with a certain stiffness and a longitudinal length at the anchorage, and a welded steel pressure-bearing body is arranged in the middle of the anchor rod to realize the tension transmission of the anchor rod to the foundation structural bottom plate. Description of the drawings

[0014] Figure 1 It is a schematic cross-sectional structure diagram of the utility model.

[0015] Figure 2 It is a schematic cross-sectional application diagram of the utility model. Specific implementation manners

[0016] Next, the technical solutions in the embodiments of the utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the utility model.

[0017] In the description of the utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper / lower end", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0018] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, terms such as "installation", "set / sleeved with", "socketed connection", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0019] Please refer to Figures 1 to 2 , wherein Figure 2 The filled line area on the left represents the ground outside the cofferdam, while the shaded line segment on the right represents the ground inside the dike. The present utility model provides a technical solution: a fire dike for a low-temperature LNG storage tank area. The present utility model mainly includes an anchor rod 1, an anchor rod anchor 12, and a wall 3. The wall 3 is composed of a structural bottom plate 30 and a structural baffle 31. Specifically, the structural baffle 31 is perpendicularly formed above the structural bottom plate 30. It is worth noting that a waist beam 310 is designed and formed in the middle section of the structural baffle 31, and its function is to fix the anchor rod 1. In order to fix the anchor rod 1, the present utility model is provided with designed holes for inserting and installing it at a fixed position. For this reason, the structural bottom plate 30, the structural baffle 31, and the waist beam 310 are all provided with holes on the same axis direction for the anchor rod 1 to be inserted and installed. In fact, this is to ensure that the anchor rod 1 can be fixed on the waist beam 310 based on a straight line and can sequentially pass through the structural baffle 31, the dike ground, and the structural bottom plate 30, so as to realize the dispersion of the anchor rod tension to the whole wall. It can be further explained that the front end of the anchor rod 1 is fixedly installed on the waist beam 310 through the anchor rod anchor 12 equipped with a backing plate 11, and the middle section is reinforced and arranged in the hole of the structural bottom plate 30 through a welded steel pressure-bearing body 13, and the end section is inserted into the ground below the structural bottom plate 30 along the axis direction of the hole.

[0020] Among them, the wall 3 is designed and formed with a cross-section in a "⊥" shape structure, and the angle range between the hole formed on the structural baffle 31 and the structural baffle 31 on the plane should be between 13° and 17°. Such a structural combination can provide an anti-overturning moment, provide an anti-sliding force, reduce the bending moment at the bottom of the fire dike wall, and reduce the bending moment of the inner structural bottom plate 30 of the fire dike when overturning along the outer structural bottom plate 30 edge.

[0021] Among them, not only is the outer package protection sleeve 10 sleeved outside the anchor rod 1, but the anchor rod 1 and the outer package protection sleeve 10 also take anti-corrosion measures according to the soil quality and liquid environment as required, so as to maximize the durability, endurance, and weather resistance of the inner anchor rod 1, thereby indirectly improving the overall safety.

[0022] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.

[0023] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fire dike for a low-temperature LNG storage tank area, comprising an anchor rod (1), an anchor rod anchor (12) and a wall body (3), characterized in that, The wall (3) is composed of a structural bottom plate (30) and a structural baffle plate (31); a waist beam (310) is designed and formed in the middle section of the structural baffle plate (31); holes are provided in the structural bottom plate (30), the structural baffle plate (31) and the waist beam (310) along the same axial direction for the anchor rod (1) to be inserted and installed; the front end of the anchor rod (1) is fixedly installed on the waist beam (310) through an anchor rod anchor (12) equipped with a backing plate (11), the middle section thereof is reinforced and arranged in the hole of the structural bottom plate (30) through a welded section steel pressure bearing body (13), and the end section is inserted into the ground below the structural bottom plate (30) along the axial direction of the hole.

2. The fire dike for a low-temperature LNG storage tank area according to claim 1, characterized in that, The wall (3) is designed and formed with a cross-section in a "⊥" shape structure.

3. The fire dike for a low-temperature LNG storage tank area according to claim 1, characterized in that, An outer protective sleeve (10) is sleeved outside the anchor rod (1).

4. A fire dike for a low-temperature LNG storage tank area according to claim 1, characterized in that, The structural bottom plate (30) should be buried under the ground outside the flood dike and cofferdam.

5. A fire dike for a low-temperature LNG storage tank area according to claim 1, characterized in that, The axis of the hole for the anchor rod (1) to be inserted and installed extends out based on the waist beam (310), and this axis extends towards the flood dike side to determine the position where the hole needs to be opened. At the same time, its extending direction should pass through the flood dike ground and one side of the structural bottom plate (30) in sequence.

6. The fire dike for a low-temperature LNG storage tank area according to claim 1, characterized in that, The angle range between the hole formed in the structural baffle plate (31) and the structural baffle plate (31) based on the plane should be between 13° and 17°.

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