CN115789503A - L-shaped soil-covering type storage container - Google Patents

Abstract

The invention provides an L-shaped soil covering type storage container, which comprises: a tank body and an extension part. The outer side of the tank body is completely covered with soil to form a covering soil layer; the extending part is perpendicular to the tank body, one end of the extending part is connected with the bottom of the circumferential outer side of the tank body and extends outwards from the bottom of the circumferential outer side of the tank body, and the extending part extends out of the soil covering layer. The extending part is arranged on the side face of the tank body to replace flexible connection to be buried, the adaptability of the external pipeline and the tank body connecting part to shearing force generated by shearing settlement is improved, the extending part and the tank body are integrated, a novel soil covering type storage container is formed, the service life of the soil covering type storage container is prolonged, and meanwhile the safety of the soil covering type storage container is improved.

Description

L-shaped soil-covering type storage container

Technical Field

The invention relates to the technical field of soil covering tanks, in particular to an L-shaped soil covering type storage container.

Background

The earthing type storage means that liquefied petroleum gas under normal temperature is pressurized and stored in a tank or under the ground, reasonable and comprehensive backfilling is carried out, the technology is very suitable for storing flammable and explosive liquid materials, the tank body can be protected, the heat and shock waves of combustion and explosion are prevented from influencing other tank bodies, risks can be effectively reduced, the tank bodies can be closer to the ground for installation, and occupied land is saved. The earthing technology is divided into half earthing and full earthing, and from the security perspective, the advantage of full earthing is obviously higher, but the side slope that forms all around after the full earthing is bigger, and the stress condition between the whole earthing structure is more complicated, especially the tank body can appear shearing the settlement with the junction of external pipeline, produces a shearing force here, and this way can cause the harm to the pipeline in the past, takes place the danger of leaking. In order to deal with the shearing force generated on the pipeline by shearing and settling, the pipeline usually adopts a hose, although the hose can relieve the shearing force to a certain extent, the strength of the hose is not high, the corrosion resistance and the anti-seismic performance of the hose are not good, leakage accidents can be caused after long-term use, and in the petrochemical industry design fire standard GB50160-2008 of petrochemical industry enterprises, the flexible connection is definitely forbidden to be buried, so that a technology for dealing with the shearing and settling of the pipeline connected outside the full soil covering tank is urgently needed at present.

Disclosure of Invention

In order to solve the above problems, it is an object of the present invention to provide an L-shaped earth-covered storage container. Through set up the extension in the external side of jar under the condition that buries without adopting the flexible coupling, solved the shearing and subsided the effort to external pipeline, increased earthing formula storage container's life, improved earthing formula storage container's security simultaneously.

To achieve the above object, the present invention provides an L-shaped earth-covered storage container, comprising: a tank body and an extension part. The outer side of the tank body is completely covered with soil to form a covering soil layer; the extending part is perpendicular to the tank body, one end of the extending part is connected with the bottom of the circumferential outer side of the tank body and extends outwards from the bottom of the circumferential outer side of the tank body, and the extending part extends out of the soil covering layer.

The extending part is arranged on the side face of the tank body to replace flexible connection to be buried, the adaptability of the external pipeline and the tank body connecting part to shearing force generated by shearing settlement is improved, the extending part and the tank body are integrated, a novel soil covering type storage container is formed, the service life of the soil covering type storage container is prolonged, and meanwhile the safety of the soil covering type storage container is improved.

Furthermore, the extension part is of a tubular structure, and the cross section of the extension part is formed by combining a semicircle and a rectangle. Optimize mechanical structure, make the extension can bear bigger pressure that comes from the top earthing, increased the inside space of extension simultaneously, and then increased whole earthing formula storage container's memory space, bigger inner space also makes things convenient for maintainer to get into inside and develops maintenance work.

Furthermore, the bottom surface of the extension part and the bottom surface of the tank body are positioned on the same plane. The bottom surface of the extension part and the bottom surface of the tank body are arranged on the same stress plane, so that the shearing force at the joint of the extension part and the tank body can be reduced, and the bearing pressure of the whole storage container can be increased.

Furthermore, a reinforcing rib is arranged at the connecting position of the extending part and the tank body. The joint is locally reinforced, the local mechanical structure is optimized, and the influence of the shearing force on the joint is reduced.

Furthermore, the surface of the extension part except the bottom surface is provided with reinforcing angle steel which is arranged at intervals. The bearing pressure of the extension part is increased, and meanwhile, the safety of personnel in the extension part is ensured.

Furthermore, the one end that the jar body was kept away from to the extension is provided with manhole, feed port and discharge opening, and the manhole sets up in feed port and discharge opening top. The manhole is arranged to facilitate the access of maintainers into the storage container for maintenance, and the feed port and the discharge port facilitate the feeding and discharging of the storage container.

Furthermore, the joint of the tank body and the extension part is locally thickened. The joint is locally reinforced, the local mechanical structure is optimized, and the influence of the shearing force on the joint is reduced.

Furthermore, a floating pontoon is arranged in the tank body, and the lowest height of the floating pontoon is higher than the height of the extension part. The design of the height of the floating pontoon in the storage tank is reasonably utilized, the floating pontoon can move flexibly, and the blockage is avoided.

Further, soil is covered to form a side slope, and the included angle between the side slope and the horizontal plane is 45 degrees. The shearing force generated by the shearing sedimentation is reduced to the maximum extent.

Furthermore, the top of the tank body is provided with a breather valve. The air exchange between the inside of the tank body and the outside is convenient.

Drawings

The drawings described herein are only for assisting those skilled in the art in understanding the technical aspects of the present invention, and the exemplary embodiments described in the present invention with reference to the drawings are only for explaining the technical aspects of the present invention and do not constitute limitations of the present invention. In the drawings:

FIG. 1 is a schematic illustration of a covering process for an L-shaped covering storage container according to an embodiment of the present invention;

FIG. 2 is a side view of an L-shaped earth covering storage container according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an L-shaped earth-covering storage container according to an embodiment of the present invention;

FIG. 4 is a front view of an L-shaped earth-covered storage container according to an embodiment of the invention;

FIG. 5 is a right side view of an L-shaped earth-covered storage container according to an embodiment of the present invention;

FIG. 6 is a top view of an L-shaped earth-covered storage container according to an embodiment of the present invention;

fig. 7 is a partial sectional view of an L-shaped earth-covered storage container according to an embodiment of the present invention.

List of reference numerals:

1. a tank body;

2. covering a soil layer;

3. an extension portion; 31. a manhole; 32. a feed port; 33. a discharge hole;

4. reinforcing ribs;

5. reinforcing angle steel;

6. a joint;

7. a floating vessel;

8. the included angle between the side slope and the horizontal plane;

9. a breather valve.

Detailed Description

In order to more clearly explain the overall concept of the present invention, the following detailed description is given by way of example in conjunction with the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "central," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the indicated orientations and positional relationships based on the drawings for ease of description and simplicity of description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being permanently connected, detachably connected, or integral; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. In the description of the present specification, reference to the description of the terms "one aspect," "some aspects," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the aspect or example is included in at least one aspect or example of the present invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same aspect or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more aspects or examples.

The core technology of the earthing storage container lies in the connection of an earthing tank and a process facility, the underground treatment and the like, taking the experimental data actually observed on the site of a vertical earthing tank as an example, if earthing is directly carried out according to the conventional earthing storage container, the earthing tank has the soil pile height of 7 meters and the compaction coefficient of 0.96, and the earthing tank settles by about 30mm under the condition that a foundation is not treated; in the same soil covering tank, the foundation is treated with a lime soil cushion layer, and the settlement is about 180mm; from the test result, if will cause covering soil tank and connecting tube department to appear serious shearing and subside after doing the processing to the ground of earthing jar below, carry out the holistic mechanical properties of ground processing meeting optimizing apparatus to the earthing jar, make equipment whole more firm, also delayed the corrosion rate that covers soil tank, its security is greatly increased also, consequently is essential to the ground processing is to equipment. In this case, in order to cope with shear settlement at the joint, most enterprises adopt a soft joint at the joint, that is, a hose is used at the joint, the hose has high deformation, and the hose can deform more than a hard joint when coping with shear settlement at the joint. However, the physical strength and corrosion resistance of the flexible connection ground are weak, and the flexible connection ground is definitely forbidden in the petrochemical industry enterprise design fire protection code GB50160-2008 based on the above poor characteristics of the flexible connection ground, so that the acting force of shearing and settling on the external pipeline cannot be solved. Under the condition, the invention provides an L-shaped soil-covering storage container, called as an L-shaped soil-covering storage container, by carrying out innovative design on a tank body from the structure of the tank body, because in the front view of the soil-covering storage container, the central axis of a soil-covering tank and the central axis of an extension part form an L shape so as to highlight the most intuitive structural characteristics of the tank body, and under the combination of the overall characteristics and the local characteristics, the tank body can well deal with the problem of shearing and settlement of a joint, and the technical scheme is explained by taking a vertical tank as an example.

As shown in fig. 1 to 7, the present invention provides an L-shaped earth-covering type storage container, comprising: jar body 1, extension 3. For convenience of understanding, the tank body 1 in the present embodiment is taken as an example of a vertical cylindrical tank, but the tank body 1 in the present technical solution is not limited to a vertical cylindrical tank, and other forms of tank bodies 1 only externally connect the extension portion 3, and the axis of the extension portion 3 and the axis of the tank body 1 form an "L shape", which all fall within the protection scope of the present invention. The foundation below the tank body 1 is the shell of the tank body 1 and the bearing object of the weight of the stored oil, and the bearing object is transferred to soil, and a plain soil layer, a gray soil layer, a sand cushion layer and an asphalt anti-corrosion layer are arranged in a general laying sequence from bottom to top. The required bearing capacity of the foundation part is not less than 10 tons per square meter, and if the lower layer has underground water, the distance is at least more than 30 centimeters. The reasonable arrangement of the soil layers of the foundation enables the foundation to have certain elasticity, and can deal with the foundation settlement after the oil storage of the tank body 1. The tank wall is a main stress part of the tank body 1, the higher the liquid level of the liquid is, the higher the pressure of the bottom layer is (p = rho gh), so the thickness of the steel plate of the tank wall is the lower thickness and the upper thickness, the thickness of the steel plate referred to in general specifications is the thickness of the thinnest part at the upper end, the steel plate of the tank wall is connected into a whole by welding according to the size of the tank body from 4 mm to 32 mm, and the arrangement modes of the upper layer and the lower layer are interactive, sleeve type, butt type and mixed type. The tank body 1 is a common vertical cylindrical tank, is formed by welding steel plates, adopts plate material which is open hearth boiling steel called A3F, adopts A3 open hearth killed steel in cold regions, and adopts high-strength low-alloy steel for large-volume oil tanks exceeding 10000m < 3 >. The tank body 1 is a dome, and a pontoon 7 (also referred to as a "floating roof") is provided inside. The loss of volatilizing of the reducible medium of pontoon 7 along with the oil level oscilaltion is add in the jar, and because interior pontoon 7 is the medium and effective isolated from also reducing the danger level of taking place fire explosion to a certain extent of jar storage and air, outside vault can prevent again that rainwater, snow and dust etc. from getting into in the jar, guarantees that jar interior medium is clean. The design and construction of the tank body 1 should meet the strength requirement of the tank body 1 under the action of external pressure, and the tank body should have good corrosion resistance and static electricity conducting performance. The thickness of the steel plate adopted by the steel oil tank is not less than 6mm. The can body 1 is referred to as a "domed can" in that the dome of the can body 1 is a fixed dome which is required to withstand relatively high internal pressures (varying from 2kPa to 10 kPa) and is typically 4-6 mm thick. The extension part and the tank body 1 can be integrally formed and can also be connected through welding, and the specific mode is freely selected according to the whole size of the equipment and the construction condition. The effect of extension 3 lies in alleviating the settlement shearing with jar body 1 junction, and is specific, subsides the shearing because jar body 1 one side includes jar body 1 self weight and jar body 1 top earthing weight to the pressure of ground, and external pipeline one side most derives from the weight of external pipeline top earthing to the pressure of ground, and the two is very big to the pressure difference of ground, and the ground has produced the difference in height under the pressure of difference this moment, and then can produce the shearing force to the junction, destroys the structure of junction. This problem is solved by two solutions of the present invention.

Fig. 1 is a schematic soil covering view of an L-shaped soil covering type storage container according to an embodiment of the present invention, and fig. 2 is a side view of a schematic soil covering view of an L-shaped soil covering type storage container according to an embodiment of the present invention, as shown in fig. 1 and fig. 2, the outer side of a tank body 1 is completely covered with soil to form a soil covering layer 2; and covering soil to form a side slope, wherein the included angle between the side slope and the horizontal plane is 8 degrees. Through finite element analysis, when the included angle is 45 degrees, the pressure above the connecting part 6 of the tank body 1 and the extension part 3 is minimum, and the shearing force generated by shearing settlement can be reduced to the greatest extent. The top of the tank body 1 is provided with a breather valve 9. The air exchange between the inside of the tank body 1 and the outside is facilitated.

The extension part 3 is vertical to the tank body 1, and one end of the extension part 3 is connected with the circumferential outer bottom of the tank body 1 and extends outwards from the circumferential outer bottom of the tank body 1. A connection scheme is that an extension part 3 does not extend out of a covering soil layer 2, the extension part 3 is of a tubular structure, the cross section of the extension part is formed by combining a semicircle and a rectangle, the other end of the extension part 3, which is far away from a tank body 1, under the covering soil layer 2 is connected with an external pipeline, namely the extension part 3 and the external pipeline are both under the covering soil layer 2, the extension part 3 has higher strength compared with the external pipeline, the extension part is not deformed under the action of shearing force, one section of the extension part 3, which is far away from the tank body 1, can be connected with the external pipeline, at the moment, the height and the weight of the extension part are far smaller than those of the tank body 1, the pressure generated on a foundation is the same as that of the external pipeline, most of the extension part is from the soil covering above, therefore, the joint of the external pipeline and the extension part 3 cannot generate shearing settlement enough for damaging the external pipeline, and the connection design of the tank body 1 and the extension part 3 can well overcome the problem of the shearing settlement.

Another connection solution is that the extension 3 extends out of the casing 2. As shown in fig. 1, the extension 3 has a tubular structure, and has a cross-sectional shape formed by combining a semicircular shape and a rectangular shape. According to the scheme, no external pipeline exists under the covering soil layer 2, the extension part 3 bears the pressure of the covering soil layer 2 above, and after the mechanical structure is optimized, the extension part 3 can bear larger pressure from the covering soil above. Compare with a connection scheme, this kind has seted up the manhole in the one end that extension 3 kept away from jar body 1, supplies the staff to get into the inside opening of jar body 1 promptly, makes things convenient for the staff to get into jar body 1 inside and overhauls. Simultaneously, extension 3 also is the partly of 1 storage space of jar body at ordinary times, and extension 3 has increased whole earthing formula storage container's memory space, and the bigger inner space also makes things convenient for the maintainer to get into inside and carries out maintenance work. The bottom surface of the extension part 3 and the bottom surface of the tank body 1 are positioned on the same plane. The bottom surface of the extension part 3 and the bottom surface of the tank body 1 are arranged on the same stress plane, so that the shearing force at the joint of the extension part 3 and the tank body 1 can be reduced, and the bearing pressure of the whole storage container can be increased.

Fig. 3 is a schematic structural view of an L-shaped soil-covering storage container according to an embodiment of the present invention, and as shown in fig. 3, reinforcing ribs 4 are disposed at positions where the extension portions 3 are connected to the tank body 1, and the reinforcing ribs 4 are equidistantly arranged and radially arranged. Therefore, the joint 6 can be locally reinforced, the local mechanical structure is optimized, and the influence of the shearing force on the joint 6 is reduced. The surface of extension 3 except the bottom surface is provided with strengthens angle steel 5, and it is "L type" to strengthen 5 cross-sections of angle steel, is about to strengthen 5 directions of angle steel and has done a folding processing to the direction of keeping away from jar body 1, through this kind of processing back, has increased the compressive capacity of extension 3 ascending compressive capacity and the tensile capacity of horizontal direction. The reinforcing angle steels 5 are arranged at intervals. The bearing capacity of the extension part 3 is increased, and the safety of personnel inside the extension part 3 is ensured. The joint 6 of the tank 1 and the extension 3 is locally thickened. The joints 6 are locally reinforced, so that the local mechanical structure is optimized, and the influence of shearing force on the joints 6 is reduced.

The end of the extension part 3 far away from the tank body 1 is provided with a manhole 31, a feeding hole 32 and a discharging hole 33, and the manhole 31 is arranged above the feeding hole 32 and the discharging hole 33. The manhole 31 is arranged to facilitate the access of maintainers to the storage container for maintenance, and the feed hole 32 and the discharge hole 33 facilitate the feeding and discharging of the storage container. When the first connection scheme is adopted, the extension part 3 is entirely arranged under the soil covering layer 2, and only the feed hole 32 and the discharge hole 33 are arranged without arranging the manhole 31.

A pontoon 7 is arranged in the tank body 1, and the lowest height of the pontoon 7 is higher than that of the extension part 3. The floating pontoon 7 changes along with the height change of the liquid stored in the tank body 1, and the design can prevent the floating pontoon 7 and the extension part 3 from interfering with each other to influence the functions of each part. The design of the height of the floating vessel 7 in the storage tank is reasonably utilized, so that the floating vessel can flexibly act conveniently, and the blockage is avoided.

To give an example of a specific size, the extension part 3 is integrally prefabricated with the tank body 1, the extension part 3 is of a tubular structure, the cross section is formed by combining a semicircle and a rectangle, the height of the extension part is not more than 1400mm, the width of the extension part is 1500mm, the surface interval except the bottom surface is 2000mm, a reinforcing angle steel 5 is arranged, and a reinforcing rib 4 is arranged at the joint 6 of the extension part 3 and the tank body 1 and is locally thickened. In the examples, the shear sedimentation problem is well solved.

Through set up extension 3 and replace the flexible coupling ground to bury in 1 side of jar body, increased external pipeline and jar body 1 junction 6 to shearing the adaptability of subsiding the shearing force that produces, extension 3 is a whole with jar body 1, has constituted neotype earthing formula storage container, has increased earthing formula storage container's life, has improved earthing formula storage container's security simultaneously.

All the embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, as for the system embodiment, since it is substantially similar to the method embodiment, the description is relatively simple, and reference may be made to the partial description of the method embodiment for relevant points.

The above description is only an example of the present invention and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (10)

1. An L-shaped earth-covered storage container, comprising:

the outer side of the tank body is completely covered with soil to form a covering soil layer;

the extension part is perpendicular to the tank body, one end of the extension part is connected with the bottom of the outer side of the tank body in the circumferential direction and extends outwards from the bottom of the outer side of the tank body in the circumferential direction, and the extension part extends out of the soil covering layer.

2. An L-shaped casing storage container as claimed in claim 1 wherein the extension is tubular in configuration having a cross-sectional shape which is a combination of semi-circular and rectangular.

3. An L-shaped earth-covered storage container as claimed in claim 2, wherein the bottom surface of said extension is located on the same plane as the bottom surface of said body.

4. An L-shaped soil-covered storage container as claimed in claim 2, wherein reinforcing ribs are provided at the positions where said extension parts are connected to said body.

5. An L-shaped soil-covered storage container as claimed in claim 2, wherein the surface of said extension part except the bottom surface is provided with reinforcing angle steel, said reinforcing angle steel being spaced apart.

6. An L-shaped soil-covered storage container as claimed in claim 2, wherein one end of the extension part away from the tank body is provided with a manhole, a feed hole and a discharge hole, and the manhole is arranged above the feed hole and the discharge hole.

7. An L-casing storage container as claimed in claim 1 wherein the junction of the body and the extension is locally thickened.

8. An L-casing storage container as claimed in claim 1 wherein a pontoon is provided inside the tank, the pontoon having a lowest elevation higher than the extension.

9. An L-casing storage container as claimed in claim 1 in which the casing forms a side slope which is angled at 45 ° to the horizontal.

10. An L-shaped earth-covered storage container as claimed in claim 1, wherein a breather valve is provided at the top of said body.

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